1. A clothes drying device is characterized in that the clothes drying device comprises a box body, a roller and a fixing component, the drum is rotatably disposed in the cabinet, the fixing member is disposed in the cabinet and connected to the cabinet, the rear flange of the roller is connected with a roller shaft, a bearing is sleeved on the roller shaft and is accommodated in the bearing chamber structure, the bearing chamber structure is perforated in a first opening formed on the fixing member, an outer diameter of the bearing chamber structure is smaller than a diameter of the first opening to allow the bearing chamber structure to be movable in a radial direction when the drum rotates, the front side and the rear side of the fixed component are respectively provided with a first limiting component and a second limiting component, and the first limiting component and the second limiting component are jointly arranged to allow the bearing chamber structure to move along the axial direction when the roller rotates and limit the movement of the bearing chamber structure along the axial direction.

2. A clothes drying apparatus according to claim 1, wherein the first stop member is connected to the bearing chamber structure, the first stop member and the second stop member being detachably connected by a support member, the support member being provided through a second aperture formed in the stationary member, the support member having an outer diameter smaller than a diameter of the second aperture to allow the support member to move radially when the drum rotates.

3. The clothes drying apparatus according to claim 2, wherein the edge of the second opening is formed with a flange structure adjacent to the first limiting member, a gap is provided between one side of the flange structure adjacent to the first limiting member and the first limiting member, and a gap is also provided between the fixing member and the second limiting member to allow the bearing chamber structure to move in an axial direction when the drum rotates; alternatively, the first and second electrodes may be,

the edge of the second opening is provided with a flanging structure close to the second limiting member, a gap is formed between one side of the flanging structure close to the second limiting member and the second limiting member, and a gap is also formed between the fixing member and the first limiting member so as to allow the bearing chamber structure to move axially when the roller rotates.

4. A clothes drying apparatus according to claim 2, wherein one of the bearing chamber structure and the second retention member is provided with a projection, and the other is provided with an engaging groove and a retention groove which are continuous, the engaging groove and the projection cooperating to allow the bearing chamber structure and the second retention member to be engaged with each other, and the retention groove and the projection cooperating to allow the bearing chamber structure and the second retention member to be engaged with each other and then rotated to axially retain each other.

5. A clothes drying apparatus according to claim 1, wherein the number of said bearings is two, and a partition structure is provided in said bearing chamber structure to partition said two bearings.

6. A clothes drying apparatus according to claim 1, wherein the drum shaft is clearance fitted with the bearing.

7. The clothes drying apparatus according to claim 6, wherein a first stopper structure is formed on the shaft, a second stopper structure is detachably connected to an outer end surface of the shaft, the first stopper structure abuts against a side of the bearing close to the drum, and the second stopper structure abuts against a side of the bearing far from the drum to axially limit the bearing.

8. Clothes drying apparatus according to any one of claims 1 to 7, wherein the inner end of the drum shaft extends through the rear flange, the drum shaft having a mounting formation formed thereon, the mounting formation being disposed on an outer side of the rear flange, an inner side of the rear flange having a reinforcing member disposed thereon, the drum shaft being secured to the rear flange by the mounting formation and the reinforcing member.

9. Clothes drying apparatus according to claim 8, wherein a guard member is provided at an inner side of the rear flange, the guard member being connected to an inner end surface of the drum shaft, the guard member closely abutting against the rear flange and forming an accommodation space with the rear flange, the reinforcement member being provided in the accommodation space.

10. A garment drying apparatus according to claim 9, wherein the guard member is provided with a first locating formation and the reinforcement member is provided with a second locating formation, the first and second locating formations being in locating engagement with one another to restrict rotation of the guard member relative to the reinforcement member.

Background

A clothes drying apparatus is a common clothes treating apparatus, which is capable of rapidly drying clothes. Some clothes drying apparatuses are provided with a drum for accommodating clothes, the drum is connected with a shaft, the shaft is sleeved with a bearing, and the bearing is arranged in a bearing seat (also called a bearing chamber). When the clothing is dried, the cylinder rotates, and the promotion muscle in the cylinder drives the clothing of treating drying and goes up and down repeatedly, and the clothing incessantly moves in the cylinder makes the unbalanced load in the cylinder, and unbalanced cylinder load can transmit to axle and the bearing frame of being connected with the cylinder for the unable stable support shaft of bearing frame probably leads to axle and bearing frame to damage, reduces the durability of bearing frame and axle, and makes the clothing drying equipment noise, and user experience is not good.

Therefore, there is a need in the art for a new clothes drying apparatus to solve the above problems.

Disclosure of Invention

In order to solve the above problems in the prior art, that is, to solve the problem that a bearing seat cannot stably support a shaft due to unbalanced load of a drum in the conventional clothes drying apparatus, the present invention provides a clothes drying apparatus, which includes a casing, a drum rotatably disposed in the casing, and a fixing member disposed in the casing and connected to the casing, wherein a rear flange of the drum is connected to the drum shaft, the drum shaft is sleeved with a bearing, the bearing is accommodated in a bearing chamber structure, the bearing chamber structure is inserted into a first opening formed in the fixing member, an outer diameter of the bearing chamber structure is smaller than a diameter of the first opening to allow the bearing chamber structure to radially move when the drum rotates, and a first limiting member and a second limiting member are respectively disposed on front and rear sides of the fixing member, and the first limiting member and the second limiting member are jointly configured to allow the bearing chamber structure to axially move when the drum rotates and limit axial movement of the bearing chamber structure .

In a preferred embodiment of the above clothes drying apparatus, the first stopper is connected to the bearing chamber, the first stopper is detachably connected to the second stopper through a support member, the support member is disposed through a second opening formed in the fixing member, and an outer diameter of the support member is smaller than a diameter of the second opening to allow the support member to move in a radial direction when the drum rotates.

In the preferable technical scheme of the clothes drying equipment, the edge of the second opening is provided with a flanging structure close to the first limiting member, a gap is formed between one side of the flanging structure close to the first limiting member and the first limiting member, and a gap is also formed between the fixing member and the second limiting member so as to allow the bearing chamber structure to move axially when the roller rotates; or a flanging structure close to the second limiting component is formed at the edge of the second opening, a gap is formed between one side of the flanging structure close to the second limiting component and the second limiting component, and a gap is also formed between the fixing component and the first limiting component, so that the bearing chamber structure can move along the axial direction when the roller rotates.

In the preferred technical scheme of the clothes drying equipment, one of the bearing chamber structure and the second limiting member is provided with a bulge, the other one of the bearing chamber structure and the second limiting member is provided with an inserting groove and a limiting groove which are connected, the inserting groove is matched with the bulge to allow the bearing chamber structure and the second limiting member to be inserted into each other, and the limiting groove is matched with the bulge to allow the bearing chamber structure and the second limiting member to be inserted into each other and then rotate to limit the axial directions of the bearing chamber structure and the second limiting member.

In the preferable technical scheme of the clothes drying equipment, the number of the bearings is two, and a separation structure for separating the two bearings is arranged in the bearing chamber structure.

In a preferred technical solution of the above clothes drying apparatus, the drum shaft is in clearance fit with the bearing.

In the preferred technical scheme of above-mentioned clothes drying equipment, be formed with first backstop structure on the bobbin, be connected with second backstop structure on the outer terminal surface of bobbin in a detachable way, first backstop structure and bearing be close to cylinder one side butt, second backstop structure and bearing keep away from cylinder one side butt to carry out axial spacing to the bearing.

In the preferred technical scheme of the clothes drying equipment, the inner end of the drum shaft penetrates through the rear flange, the drum shaft is provided with the mounting structure, the mounting structure is arranged on the outer side of the rear flange, the inner side of the rear flange is provided with the reinforcing member, and the drum shaft is fixed on the rear flange through the mounting structure and the reinforcing member.

In the preferable technical scheme of the clothes drying equipment, the inner side of the rear flange is provided with a protective component, the protective component is connected with the inner end face of the cylinder shaft, the protective component tightly abuts against the rear flange and forms an accommodating space with the rear flange, and the reinforcing component is arranged in the accommodating space.

In the preferred technical scheme of above-mentioned clothing drying equipment, be provided with first location structure on the guard component, be provided with the second location structure on the reinforcing member, first location structure and second location structure location cooperation each other in order to restrict guard component and rotate for the reinforcing member.

It can be understood by those skilled in the art that, in the preferred embodiment of the present invention, the bearing chamber structure is disposed to penetrate the first opening formed on the fixing member, the outer diameter of the bearing chamber structure is smaller than the diameter of the first opening, and the front side and the rear side of the fixing member are respectively provided with the first limiting member and the second limiting member, which are jointly disposed to allow the bearing chamber structure to move in the axial direction and limit the movement of the bearing chamber structure in the axial direction when the drum rotates, so that the bearing chamber structure can have a movement margin in both the axial direction and the radial direction, even if the load in the drum is unbalanced, the bearing chamber structure can relatively stably support the drum shaft, thereby reducing the possibility of damage of the drum shaft, the bearing and the bearing chamber structure, prolonging the service life of the drum shaft, the bearing and the bearing chamber structure, and further reducing the number of maintenance times, Reduce the cost that the user maintained dry clothing equipment to can also the production of noise abatement, the noise abatement promotes user experience to user's influence.

Further, the first limiting member is connected with the bearing chamber structure, the first limiting member is detachably connected with the second limiting member through the supporting member, the supporting member penetrates through a second opening formed in the fixing member, the outer diameter of the supporting member is smaller than the diameter of the second opening so as to allow the supporting member to move along the radial direction when the roller rotates, and through the arrangement, the first limiting member, the bearing chamber structure and the second limiting member can be quite conveniently installed on the fixing member, and meanwhile, the bearing chamber structure still has a moving allowance.

Furthermore, a flanging structure close to the first limiting member is formed at the edge of the second opening, a gap is formed between one side of the flanging structure close to the first limiting member and the first limiting member, and a gap is also formed between the fixing member and the second limiting member so as to allow the bearing chamber structure to move axially when the roller rotates; the edge of the second opening is provided with a flanging structure close to the second limiting member, a gap is formed between one side of the flanging structure close to the second limiting member and the second limiting member, a gap is also formed between the fixing member and the first limiting member, and the bearing chamber structure can move along the axial direction when the roller rotates.

Furthermore, one of the bearing chamber structure and the second limiting component is provided with a protrusion, the other of the bearing chamber structure and the second limiting component is provided with an inserting groove and a limiting groove which are connected, the inserting groove is matched with the protrusion to allow the bearing chamber structure and the second limiting component to be inserted into each other, the limiting groove is matched with the protrusion to allow the bearing chamber structure and the second limiting component to be inserted into each other and then rotate to limit each other axially, and the arrangement is convenient for the installation and the disassembly of the bearing chamber structure and the second limiting component, and meanwhile, the axial limiting of the bearing chamber structure and the second limiting component can be realized.

Furthermore, the number of the bearings is two, a separation structure for separating the two bearings is arranged in the bearing chamber structure, the barrel shaft can be better supported through the arrangement, the separation structure can enable the two bearings not to rub against each other when the inner rings of the two bearings rotate along with the barrel shaft, the resistance borne by the two bearings when the shaft rotates is avoided being increased, and meanwhile unnecessary abrasion of the bearings can be avoided.

Further, the cylinder shaft is in clearance fit with the bearing, and through the arrangement, the cylinder shaft can have a certain movement allowance relative to the bearing, and the bearing is convenient to mount on the cylinder shaft.

Further, be formed with first backstop structure on the bobbin, be connected with second backstop structure on the outer terminal surface of bobbin detachablely, first backstop structure and bearing be close to cylinder one side butt, and second backstop structure and bearing keep away from cylinder one side butt to it is spacing to carry out the axial to the bearing, through such setting, make the bearing can be spacing in the axial, avoid the bearing to deviate from the bobbin, guaranteed the reliability that the bearing supported to the bobbin.

Furthermore, the inner end of the barrel shaft penetrates through the rear flange, a mounting structure is formed on the barrel shaft, the mounting structure is arranged on the outer side of the rear flange, a reinforcing member is arranged on the inner side of the rear flange, the barrel shaft is fixed on the rear flange through the mounting structure and the reinforcing member, through the arrangement, the rear flange can be reinforced, and the barrel shaft is connected with the rear flange more reliably.

Further, the inner side of the rear flange is provided with a protection component, the protection component is connected with the inner end face of the drum shaft, the protection component tightly abuts against the rear flange and forms an accommodating space with the rear flange, and the reinforcing component is arranged in the accommodating space.

Further, the protection component is provided with a first positioning structure, the reinforcing component is provided with a second positioning structure, and the first positioning structure and the second positioning structure are in positioning fit with each other to limit the protection component to rotate relative to the reinforcing component.

Drawings

FIG. 1 is a schematic view of the overall construction of one embodiment of the clothes drying apparatus of the present invention; (ii) a

FIG. 2 is an exploded view of a portion of the construction of one embodiment of the clothes drying apparatus of the present invention;

FIG. 3 is a rear view of a partial structure of one embodiment of the clothes drying apparatus of the present invention;

FIG. 4 is a sectional schematic view at A in FIG. 3, also an assembled view corresponding to the exploded view of FIG. 2;

FIG. 5 is a partial enlarged view at B in FIG. 4;

FIG. 6 is a schematic view of a partial structure of an embodiment of the drying apparatus of the present invention;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

FIG. 8 is a schematic view of the bearing housing structure and the first stop member of one embodiment of the clothes drying apparatus of the present invention;

FIG. 9 is a schematic view of a second stop member of an embodiment of the clothes drying apparatus of the present invention;

FIG. 10 is a schematic structural view of a rear flange, a drum shaft and a mounting structure of an embodiment of the clothes drying apparatus of the present invention;

FIG. 11 is an enlarged view of a portion of FIG. 10 at D;

FIG. 12 is a schematic structural view of a rear flange, a drum shaft and a reinforcing member of an embodiment of the clothes drying apparatus of the present invention;

fig. 13 is a partial enlarged view at E in fig. 12;

fig. 14 is an enlarged view of the reinforcing member and the shielding member of fig. 2.

Reference numerals:

1. a box body; 2. a fixing member; 20a, a first opening; 20b, a second opening; 20c, a flanging structure; 3. a rear flange; 30a, a reinforcing member; 30a-1, a second positioning structure; 30b, a guard member; 30b-1, a first positioning structure; 4. a barrel shaft; 40a, a first stop structure; 40b, a second stop structure; 40c, a mounting structure; 5. a bearing; 6. a bearing chamber structure; 60a, a plug-in groove; 60b, a limiting groove; 60c, a separation structure; 7. a first stop member; 8. a second stop member; 80a, a bump; 9. a support member.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "left", "right", "front", "rear", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Based on the problem that a bearing seat cannot stably support a shaft due to unbalanced load of a roller in the conventional clothes drying equipment pointed out by the background art, the invention provides the clothes drying equipment, aiming at enabling a bearing chamber structure to have movement allowance in the axial direction and the radial direction, and enabling the bearing chamber structure to relatively stably support the roller shaft, so that the service lives of the roller shaft, the bearing and the bearing chamber structure are prolonged, the maintenance times are further reduced, the cost of maintaining the clothes drying equipment by a user is reduced, the generation of noise is reduced, the influence of the noise on the user is reduced, and the user experience is improved.

Specifically, as shown in fig. 1 and 2, the clothes drying apparatus of the present invention comprises a cabinet 1, a drum rotatably provided in the cabinet 1, the fixed component 2 is arranged in the box body 1 and connected with the box body 1, the rear flange 3 of the roller is connected with a roller shaft 4, a bearing 5 is sleeved on the roller shaft 4, the bearing 5 is accommodated in a bearing chamber structure 6, the bearing chamber structure 6 is arranged on a first opening 20a formed on the fixing member 2 in a penetrating mode, the outer diameter of the bearing chamber structure 6 is smaller than the diameter of the first opening 20a so as to allow the bearing chamber structure 6 to move along the radial direction when the roller rotates, a first limiting member 7 and a second limiting member 8 are arranged on the front side and the rear side of the fixing member 2 respectively, and the first limiting member 7 and the second limiting member 8 are jointly arranged to allow the bearing chamber structure 6 to move along the axial direction when the roller rotates and limit the movement of the bearing chamber structure 6 along the axial direction.

In a possible case, a plurality of holes are formed on the rear side wall of the drum, an air duct is connected to the front end of the drum, and a fan is disposed in the air duct, so that when clothes are dried, the fan is started to form negative pressure, so that relatively dry air outside the drum enters the drum through the plurality of holes on the rear side wall, and humid air inside the drum enters the air duct and is discharged out of the clothes drying apparatus. Of course, the above is only one possible arrangement of the structure related to the air circulation in the clothes drying apparatus, and those skilled in the art can flexibly arrange the arrangement of the structure related to the air circulation in practical applications, and such adjustment and change of the arrangement of the structure related to the air circulation do not constitute a limitation to the present invention, and shall be limited within the protection scope of the present invention.

In a possible situation, a motor and a transmission belt are arranged in the box body 1, one end of the transmission belt is sleeved on the output shaft of the motor, the other end of the transmission belt is sleeved on the roller, and the motor drives the roller to rotate through the transmission belt. Of course, the roller may be driven to rotate by other methods, and those skilled in the art may flexibly set the driving method of the roller in practical applications as long as the driving method is applicable to the technical solution of the present invention.

When the drum rotates, the load in the drum is unbalanced, the load is transferred to the bearing housing structure 6, the bearing housing structure 6 may be offset, and the outer diameter of the bearing housing structure 6 is smaller than the diameter of the first opening hole 20a, so that the bearing housing structure 6 may not be in contact with the first opening hole 20a at all times during the rotation of the drum although the bearing housing structure 6 is offset, thereby enabling the bearing housing structure 6 to stably support the bearing 5, the drum shaft 4, and the drum. The difference between the diameter of the first opening 20a and the outer diameter of the bearing housing 6 should be at least greater than the excursion range of the bearing housing 6 during rotation of the drum, for example: when the offset range of the bearing chamber structure 6 is 1.5cm, the difference between the diameter of the first opening 20a and the outer diameter of the bearing chamber structure 6 may be set to 2cm, and when the offset range of the bearing chamber structure 6 is 1cm, the difference between the diameter of the first opening 20a and the outer diameter of the bearing chamber structure 6 may be set to 1.7cm, and those skilled in the art may reasonably set the difference between the diameter of the first opening 20a and the outer diameter of the bearing chamber structure 6 according to the offset range of the bearing chamber structure 6 in practical applications, as long as the bearing chamber structure 6 can not contact with the first opening 20a all the time during the rotation of the drum.

It should be noted that the first and second stop members 7 and 8 are jointly configured to allow the bearing housing structure 6 to move axially when the drum rotates and to stop the movement of the bearing housing structure 6 in the axial direction, i.e., when the drum rotates, the bearing housing structure 6 moves axially, due to the spacing between the first and second stop members 7, 8, the first and second stop members 7, 8 are able to allow the bearing chamber structure 6 to move axially as the drum rotates, and the bearing chamber structure 6 may touch the first stop member 7 and the second stop member 8 when a movement in the axial direction occurs, thus, the first and second stop members 7, 8 allow the bearing housing structure 6 to move in the axial direction as the drum rotates, while also being able to limit the movement of the bearing housing structure 6 in the axial direction.

When the drum is not rotating, the outer bottom of the bearing housing structure 6 is in contact with the bottom of the first opening 20a in the stationary member 2, and the stationary member 2 can support the bearing housing structure 6, thereby indirectly supporting the drum. In one possible case, a support wheel is provided at each of left and right sides of a lower portion of a front end of the drum to further support the drum. In another possible case, the left and right sides of the lower portion of the front end of the drum are respectively provided with a support wheel, and the left and right sides of the lower portion of the rear end of the drum are also respectively provided with a support wheel to further support the drum. Of course, other ways to further support the roller may be adopted, and those skilled in the art may flexibly set other ways to further support the roller in practical applications, and such adjustment and change to the specific supporting way of the roller do not limit the present invention, and should be limited within the protection scope of the present invention.

In the above technical solution, the fixing member 2 may be a fixing plate, a fixing block, a fixing frame, etc., and the specific connection form of the fixing member 2 and the case 1 may be that the fixing member 2 and the case 1 are integrally disposed (for example, welding, integral casting, etc.), or the fixing member 2 and the case 1 are detachably connected (for example, screwing, clamping, etc.), and those skilled in the art may flexibly set the specific structure of the fixing member 2 and the specific connection form of the fixing member 2 and the case 1 in practical application, as long as the fixing member 2 can support the bearing chamber structure 6 when the drum does not rotate, thereby indirectly supporting the drum. In the above, the drum includes a cylindrical wall and a rear side wall, the rear flange 3 of the drum is actually the rear side wall of the drum (only the rear flange is shown in the drawings, the cylindrical wall of the drum is not shown), the rear flange 3 may be integrally disposed with the cylindrical wall of the drum (for example, welding, integral casting, etc.), or may be detachably connected with the cylindrical wall of the drum (for example, screwing, clamping, etc.), a person skilled in the art may flexibly set a specific connection form of the rear flange 3 and the cylindrical wall of the drum in practical application, and such adjustment and change of the specific connection form of the rear flange 3 and the cylindrical wall of the drum do not limit the present invention, and should be limited within the protection scope of the present invention. In addition, the bearing 5 is accommodated in the bearing chamber structure 6, and the bearing chamber structure 6 plays a role of accommodating and supporting the bearing 5. It should be noted that, the front and back sides of the fixing member 2 are respectively provided with the first stopper member 7 and the second stopper member 8, specifically, the first stopper member 7 may be located on the front side of the fixing member 2, the second stopper member 8 may be located on the back side of the fixing member 2 (as shown in fig. 2), or the second stopper member 8 may be located on the front side of the fixing member 2, and the first stopper member 7 may be located on the back side of the fixing member 2. The first limiting member 7 and the second limiting member 8 can adopt limiting plates, limiting blocks and the like, and a person skilled in the art can flexibly set the specific structures of the first limiting member 7 and the second limiting member 8 in practical application, and such adjustment and change of the specific structures of the first limiting member 7 and the second limiting member 8 do not limit the present invention, and should be limited within the protection scope of the present invention.

Preferably, as shown in fig. 2 to 5, the first stopper member 7 is connected with the bearing chamber structure 6, the first stopper member 7 is detachably connected with the second stopper member 8 through a support member 9, the support member 9 is inserted through a second opening 20b formed on the fixing member 2, and the support member 9 has an outer diameter smaller than that of the second opening 20b to allow the support member 9 to be movable in a radial direction when the drum rotates. The supporting member 9 may be a cylindrical supporting member 9 (as shown in fig. 5), or the portion of the supporting member 9 passing through the second opening 20b may be cylindrical, and other portions may be other shapes, and those skilled in the art may flexibly set the specific structure of the supporting member 9 in practical application, as long as the supporting member 9 can make a certain distance between the first limiting member 7 and the second limiting member 8, so that the first limiting member 7 and the second limiting member 8 can allow the bearing chamber structure 6 to move in the axial direction when the drum rotates and limit the movement of the bearing chamber structure 6 in the axial direction. The difference between the diameter of the second opening 20b and the outer diameter of the support member 9 should be at least greater than the excursion range of the bearing housing structure 6 when the drum is rotating, for example: when the offset range of the supporting member 9 is 1.5cm, the difference between the diameter of the second opening 20b and the outer diameter of the supporting member 9 may be set to 2cm, and when the offset range of the supporting member 9 is 1cm, the difference between the diameter of the second opening 20b and the outer diameter of the supporting member 9 may be set to 1.7cm, and those skilled in the art may reasonably set the difference between the diameter of the second opening 20b and the outer diameter of the supporting member 9 according to the offset range of the supporting member 9 in practical applications, as long as the supporting member 9 can be kept from contacting the second opening 20b all the time during the rotation of the drum. An alternative to the above embodiment is that the first and second stop members 7 and 8 are connected to the housing 1 but not to the bearing housing structure 6 and are disposed on the front and rear sides of the bearing housing structure 6, respectively, so that the first and second stop members 7 and 8 can also allow the bearing housing structure 6 to move in the axial direction when the drum rotates and limit the movement of the bearing housing structure 6 in the axial direction.

In one possible case, the edge of the second opening 20b is formed with a flange structure 20c adjacent to the first stop member 7, and a gap is provided between the first stop member 7 and the side of the flange structure 20c adjacent to the first stop member 7, and a gap is also provided between the fixing member 2 and the second stop member 8 to allow the bearing housing structure 6 to move in the axial direction when the drum rotates. Taking the first stopper member 7 located at the front side of the fixing member 2 and the second stopper member 8 located at the rear side of the fixing member 2 as an example, the edge of the second opening 20b is formed with a flange structure 20c close to the first stopper member 7, i.e., the edge of the second opening 20b is formed with a forward flange structure 20 c.

In one possible case, as shown in fig. 5, the edge of the second opening 20b is formed with a flange structure 20c adjacent to the second stopper member 8, and a side of the flange structure 20c adjacent to the second stopper member 8 has a gap with the second stopper member 8, and a gap is also provided between the fixing member 2 and the first stopper member 7 to allow the bearing housing structure 6 to move in the axial direction when the drum rotates. Taking the first stop member 7 at the front side of the fixed member 2 and the second stop member 8 at the rear side of the fixed member 2 as an example, the edge of the second opening 20b is formed with a flange structure 20c adjacent to the second stop member 8, i.e., the edge of the second opening 20b is formed with a flange structure 20c directed rearward (as is the case in fig. 5).

Preferably, as shown in fig. 6 to 9, one of the bearing housing structure 6 and the second position-limiting member 8 is provided with a protrusion 80a, and the other is provided with a connecting insertion groove 60a and a position-limiting groove 60b, the insertion groove 60a and the protrusion 80a cooperate to allow the bearing housing structure 6 and the second position-limiting member 8 to be inserted into each other, and the position-limiting groove 60b and the protrusion 80a cooperate to allow the bearing housing structure 6 and the second position-limiting member 8 to be inserted into each other and then rotated to axially position each other. Such an arrangement not only facilitates the mounting and dismounting of the bearing chamber structure 6 and the second limiting member 8, but also enables the axial limiting of the bearing chamber structure 6 and the second limiting member 8.

Preferably, as shown in fig. 5 and 8, the number of the bearings 5 is two, and a partition structure 60c that partitions the two bearings 5 is provided in the bearing chamber structure 6. After the bearings 5 are placed in the bearing chamber structure 6, the bearings 5 are axially preloaded, so that the bearings 5 can be placed more firmly in the bearing chamber structure 6, taking the situation shown in fig. 5 as an example, two bearings 5 are arranged one behind the other on the cylindrical shaft 4, and axial preloading is applied to the bearings 5, that is, a certain axially rearward force is applied to the bearings 5 arranged in front, and a certain axially forward force is applied to the bearings 5 arranged behind. In a more preferred embodiment, the separation structure 60c is in contact with the outer ring of the bearing 5 but not in contact with the inner ring of the bearing 5, so that when the inner rings of the two bearings 5 rotate along with the cylindrical shaft 4, no mutual friction occurs between the two bearings 5, thereby avoiding increasing the resistance to the rotation of the shaft. Of course, the partition structure 60c may be provided in contact with both the outer ring of the bearing 5 and the inner ring of the bearing 5, and the lubricating oil may be applied between the partition structure 60c and the inner ring of the bearing 5. The separating structure 60c may be a separating ring (as shown in fig. 8), a separating block (for example, a plurality of separating blocks are arranged at intervals between the two bearings 5 inside the bearing chamber structure 6), a separating plate, etc., and those skilled in the art can flexibly set the specific structure of the separating structure 60c in practical application as long as the separating structure 60c can separate the two bearings 5 and the two bearings 5 do not rub against each other. The person skilled in the art can flexibly set the number of bearings 5 and the respective type of bearings 5 in practical applications, for example: when the number of the bearings 5 is one, angular contact ball bearings 5 and tapered roller bearings 5 may be adopted, and when the number of the bearings 5 is two, deep groove ball bearings 5 may be adopted, and such adjustment and change of the number of the bearings 5 and the corresponding type of the bearings 5 do not limit the present invention, and should be limited within the scope of the present invention.

Preferably, the cartridge shaft 4 is clearance fitted with the bearing 5. This enables the spool 4 to have a certain play margin with respect to the bearing 5, and facilitates the mounting of the bearing 5 on the spool 4.

Preferably, as shown in fig. 5, a first stopping structure 40a is formed on the cylindrical shaft 4, a second stopping structure 40b is detachably connected to the outer end surface of the cylindrical shaft 4, the first stopping structure 40a abuts against the side of the bearing 5 close to the roller, and the second stopping structure 40b abuts against the side of the bearing 5 far from the roller, so as to axially limit the bearing 5. In an alternative embodiment of the above embodiment, the first stopping structure 40a is detachably disposed on the fixing member, the second stopping structure 40b is disposed on the bearing chamber structure 6, the first stopping structure 40a abuts against the side of the bearing 5 close to the drum, and the second stopping structure 40b abuts against the side of the bearing 5 far from the drum, so as to axially limit the bearing 5. Taking the situation shown in fig. 5 as an example, two bearings 5 are arranged in tandem on the drum shaft 4, the first stopping structure 40a abuts against the side of the bearing 5 close to the drum, that is, the first stopping structure 40a abuts against the side of the bearing 5 closest to the drum, that is, the first stopping structure 40a abuts against the side of the bearing 5 close to the drum arranged in front, and the second stopping structure 40b abuts against the side of the bearing 5 far away from the drum, that is, the second stopping structure 40b abuts against the side of the bearing 5 farthest away from the drum, that is, the second stopping structure 40b abuts against the side of the bearing 5 far away from the drum arranged behind. In the above description, the first stopping structure 40a and the second stopping structure 40b may adopt a stopping ring, a stopping plate, a stopping block, etc., and those skilled in the art may flexibly set the specific structures of the first stopping structure 40a and the second stopping structure 40b in practical application, and such adjustment and change of the specific structures of the first stopping structure 40a and the second stopping structure 40b do not limit the present invention, and should be limited within the protection scope of the present invention.

Preferably, as shown in fig. 10 to 13 (wherein fig. 10 and 11 show the rear side of the rear flange 3, that is, the outer side of the rear flange 3, and fig. 12 and 13 show the front side of the rear flange 3, that is, the inner side of the rear flange 3), the inner end of the cylindrical shaft 4 penetrates through the rear flange 3, a mounting structure 40c is formed on the cylindrical shaft 4, the mounting structure 40c is disposed on the outer side of the rear flange 3, the inner side of the rear flange 3 is provided with a reinforcing member 30a, and the cylindrical shaft 4 is fixed on the rear flange 3 by the mounting structure 40c and the reinforcing member 30 a. The drum shaft 4 is fixed to the rear flange 3 by a mounting structure 40c and a reinforcing member 30a, for example: screws are sequentially passed through the reinforcing member 30a, the rear flange 3 and the mounting structure 40c to fix the drum shaft 4 to the rear flange 3 through the mounting structure 40c and the reinforcing member 30a, but of course, it is also possible to insert the inner end of the drum shaft 4 into the rear flange 3 and the mounting structure 40c abuts against the outer side of the rear flange 3, abut the reinforcing member 30a against the inner side of the rear flange 3, and weld the reinforcing member 30a and the drum shaft 4 together, and those skilled in the art can flexibly set the specific connection mode of the drum shaft 4, the reinforcing member 30a, the rear flange 3 and the mounting structure 40c in practical application as long as the drum shaft 4 can be fixed to the rear flange 3 through the mounting structure 40c and the reinforcing member 30 a. In the above description, the mounting structure 40c may be a mounting plate, a mounting block, etc., and the reinforcing member 30a may be a reinforcing plate, a reinforcing rib, etc., and those skilled in the art can flexibly set the specific structures of the mounting structure 40c and the reinforcing member 30a in practical applications, and such adjustment and change of the specific structures of the mounting structure 40c and the reinforcing member 30a do not limit the present invention, and should be limited within the protection scope of the present invention.

Preferably, as shown in fig. 2, 5 and 14, the inner side of the rear flange 3 is provided with a guard member 30b, the guard member 30b is connected with the inner end face of the cylinder shaft 4, the guard member 30b is tightly abutted against the rear flange 3 and forms an accommodation space with the rear flange 3, and the reinforcing member 30a is provided in the accommodation space. That is, the protection member 30b can prevent the reinforcement member 30a from being exposed, thereby preventing the laundry in the drum from being entangled with the reinforcement member 30a when repeatedly lifted and lowered, so that the connection between the drum shaft 4 and the rear flange 3 is reliable, and the possibility of water vapor entering the accommodating space can be greatly reduced, thereby reducing the possibility of the reinforcement member 30a being corroded by the water vapor. In a possible case, the guard member 30b is connected to the inner end surface of the shaft 4 by a screw (the screw passes through the guard member 30b and is inserted into the inner end surface of the shaft 4), tightening the screw can make the guard member 30b tightly abut against the rear flange 3, and the inventors have repeatedly conducted experiments, and the guard member 30b tightly abutting against the rear flange 3 can greatly reduce the possibility that the reinforcing member 30a is corroded by water vapor. Of course, the protective member 30b may be tightly abutted against the rear flange 3 by other means to reduce the possibility of the reinforcing member 30a being eroded by water vapor, such as: the guard member 30b is connected to the inner end surface of the drum shaft 4, and a member capable of pressing the guard member 30b is provided in the drum so that the guard member 30b is tightly abutted against the rear flange 3. The protection member 30b may be a protection disc, a protection cover, etc., and those skilled in the art can flexibly set the specific structure of the protection member 30b in practical application, and such adjustment and change to the specific structure of the protection member 30b do not limit the present invention, and should be limited within the protection scope of the present invention.

Preferably, as shown in FIG. 14, the protective member 30b is provided with a first positioning structure 30b-1, the reinforcing member 30a is provided with a second positioning structure 30a-1, and the first positioning structure 30b-1 and the second positioning structure 30a-1 are positioned to cooperate with each other to limit the rotation of the protective member 30b relative to the reinforcing member 30 a. That is, in the case where the installation of the guard member 30b and the reinforcing member 30a is completed, the first positioning structure 30b-1 and the second positioning structure 30a-1 are positioned and engaged with each other, such as: the first positioning structure 30b-1 may be a positioning plate, a positioning post, etc., and correspondingly, the second positioning structure 30a-1 may be a positioning groove, a positioning hole, etc., and those skilled in the art can flexibly set the specific structures of the first positioning structure 30b-1 and the second positioning structure 30a-1 in practical applications, as long as the first positioning structure 30b-1 and the second positioning structure 30a-1 can be positioned and matched with each other to limit the rotation of the protection component 30b relative to the reinforcement component 30 a.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.