1. A hinge assembly, characterized by: the method comprises the following steps:

the hinge fixing seat, the hinge plate and the pivoting connection part are arranged between the hinge fixing seat and the hinge plate;

the hinge plate comprises an arc-shaped arm, a supporting arm and a connecting arm, wherein the supporting arm and the connecting arm are respectively connected with the two ends of the arc-shaped arm, the free end of the connecting arm is connected with the hinge fixing seat in a rotating mode through the pivoting connecting portion, and the pivoting connecting portion is located at the position of the circle center of the arc-shaped arm.

2. The hinge assembly of claim 1, wherein: the pivot connection portion is including establishing pivot on the hinge fixing base, establishing the connecting arm free end with pivot matched with shaft hole, the shaft hole is located the centre of a circle position department of arc arm.

3. The hinge assembly of claim 1, wherein: the length of the arc-shaped arm is not more than one fourth of the circumference of a circle where the arc-shaped arm is located.

4. The hinge assembly of claim 1, wherein: the hinge plate is provided with at least an initial state that the arc-shaped arm is superposed with the hinge fixing seat and a use state that the arc-shaped arm extends out of the hinge fixing seat, and in the initial state, the supporting arm and the connection positions of the arc-shaped arm and the connecting arm are respectively positioned at two sides of the circle center of the arc-shaped arm.

5. The hinge assembly of claim 1, wherein: the total length of arc arm and support arm is greater than the length of linking arm, and the support arm has adjacently the medial surface of pivotal connection portion, the arc arm has respectively to be close to the intrados of pivotal connection portion, under the user state, the linear distance of the medial surface of support arm to pivotal connection portion is less than the intrados of arc arm and the most distant department of pivotal connection portion linear distance to pivotal connection portion's linear distance.

6. The hinge assembly of any one of claims 1 to 5, wherein: the hinge fixing seat comprises a fixing plate and a limiting plate, the fixing plate is parallel to the plane where the arc-shaped arm is located, the limiting plate is connected to one end of the fixing plate, an opening for the hinge plate to penetrate through is formed in the limiting plate, and the pivot connection portion is close to the limiting plate and is arranged at a certain distance away from the opening.

7. The hinge assembly of claim 6, wherein: the angle between a straight line where the outer wall surface of the supporting arm is located and a tangent line of a connecting part of the arc-shaped arm and the connecting arm is 60-70 degrees, a limiting groove is formed at the connecting part of the connecting arm and the arc-shaped arm, and the limiting plate is located in the limiting groove in a use state.

8. The hinge assembly of claim 6, wherein: the hinge fixing base further comprises a left side plate used for connecting the limiting plate and the fixing plate, the adjacent opening of the left side plate is arranged, a limiting portion is arranged on the inner side wall of the left side plate, and a plurality of limiting blocks matched with the limiting portions are arranged on the outer side of the arc-shaped arm.

9. A drawer, characterized by: the hinge assembly comprises a drawer body with an upward opening, a cover body used for covering the drawer body, and the hinge assembly according to any one of claims 1 to 8 used for connecting the cover body and the same side of the drawer body, wherein the hinge fixing seat is fixed on the side wall of the drawer body, and one end of the supporting arm far away from the hinge fixing seat is fixed on the cover body.

10. The drawer of claim 9, wherein: the lateral wall is equipped with and holds the chamber that holds of hinge subassembly, hinge fixing base include with arc arm place plane parallel arrangement's fixed plate, the lateral wall have with the parallel cooperation wall in plane at fixed plate place, the drawer still include certainly cooperation wall projection extend to hold intracavity and pivot connecting portion complex cooperation portion and with the extending plate of hinge plate complex, the shape of extending plate is unanimous with the shape of hinge plate.

11. The drawer of claim 10, wherein: the side wall is also provided with a left side wall and a bottom wall which form an accommodating cavity, the left side wall comprises a vertical wall arranged adjacent to the matching part and an inclined wall below the vertical wall, and the connecting arm is lapped on the inclined wall in the initial state that the hinge assembly is matched with the drawer; the bottom wall is positioned at the lower end of the inclined wall, and the whole body is positioned below the arc-shaped arm in an arc surface shape.

12. The drawer of claim 11, wherein: the fixing plate and the side wall are fixed through bolts, a pair of screw holes are formed in opposite corners of the fixing plate and the matching wall, one screw hole penetrates through the pivoting connecting portion and the matching portion along the length direction of the pivoting connecting portion, and the other screw hole is located below one end, far away from the inclined wall, of the bottom wall.

13. A refrigeration apparatus, characterized by: comprising a storage compartment, a drawer according to any one of claims 9 to 12 provided in the storage compartment.

Background

In order to meet the storage requirements of diversification and individuation of users, the fresh-keeping sealing drawer is arranged in the refrigerating equipment, the sealing drawer applied to the refrigerator generally needs to rely on the weight of the upper cover to ensure the sealing effect between the upper cover and the sealing drawer, but the existing hinge structure cannot meet the appearance requirement of the fresh-keeping sealing drawer and the strength requirement for supporting the cover body.

Disclosure of Invention

The present invention solves one of the above problems by providing a novel hinge assembly, drawer and refrigeration appliance.

In order to achieve the purpose, the technical scheme provided by the invention is as follows:

a hinge assembly, comprising:

the hinge fixing seat, the hinge plate and the pivoting connection part are arranged between the hinge fixing seat and the hinge plate;

the hinge plate comprises an arc-shaped arm, a supporting arm and a connecting arm, wherein the supporting arm and the connecting arm are respectively connected with the two ends of the arc-shaped arm, the free end of the connecting arm is connected with the hinge fixing seat in a rotating mode through the pivoting connecting portion, and the pivoting connecting portion is located at the position of the circle center of the arc-shaped arm.

Further, the pivot connection portion is including establishing pivot on the hinge fixing base, establishing the connecting arm free end with pivot matched with shaft hole, the shaft hole is located the centre of a circle position department of arc arm.

Further, the length of the arc-shaped arm is not more than one fourth of the circumference of a circle where the arc-shaped arm is located.

Further, the hinge plate has at least an initial state in which the arc-shaped arm is superposed with the hinge fixing seat and a use state in which the arc-shaped arm extends out of the hinge fixing seat, and in the initial state, the support arm and the connection positions of the arc-shaped arm and the connection arm are respectively located at two sides of the circle center of the arc-shaped arm.

Further, the total length of the arc-shaped arm and the support arm is greater than the length of the connecting arm, the support arm is provided with an inner side surface adjacent to the pivot connecting part, the arc-shaped arm is provided with an inner arc surface close to the pivot connecting part respectively, and in a use state, the straight line distance from the inner side surface of the support arm to the pivot connecting part is smaller than the straight line distance from the inner arc surface at the farthest position of the straight line distance of the arc-shaped arm and the pivot connecting part to the pivot connecting part.

Further, the hinge fixing seat comprises a fixing plate and a limiting plate, the fixing plate is parallel to the plane where the arc-shaped arm is located, the limiting plate is connected to one end of the fixing plate, an opening for the hinge plate to penetrate through is formed in the limiting plate, and the pivot connection portion is close to the limiting plate and is arranged at a certain distance away from the opening.

Furthermore, the angle between a straight line where the outer wall surface of the supporting arm is located and a tangent line of a joint of the arc-shaped arm and the connecting arm is 60-70 degrees, a limiting groove is formed at the joint of the connecting arm and the arc-shaped arm, and in a use state, the limiting plate is located in the limiting groove.

Further, the hinge fixing base still includes the left side board that is used for connecting limiting plate and fixed plate, the adjacent opening setting of left side board, be equipped with spacing portion on the inside wall of left side board, the outside of arc arm is equipped with a plurality of and spacing portion matched with stopper.

The invention also provides a drawer, which comprises a drawer body with an upward opening, a cover body used for covering the drawer body and the hinge assembly used for connecting the cover body and the drawer body at the same side, wherein the hinge fixing seat is fixed on the side wall of the drawer body, and one end of the supporting arm far away from the hinge fixing seat is fixed on the cover body.

Further, the lateral wall is provided with an accommodating cavity for accommodating the hinge assembly, the hinge fixing seat comprises a fixing plate arranged in parallel with the plane where the arc-shaped arm is located, the lateral wall is provided with a matching wall parallel with the plane where the fixing plate is located, the drawer further comprises a matching part protruding into the accommodating cavity from the matching wall and matched with the pivoting connection part and an extending plate matched with the hinge plate, and the shape of the extending plate is consistent with that of the hinge plate.

Furthermore, the side wall is also provided with a left side wall and a bottom wall which form an accommodating cavity, the left side wall comprises a vertical wall arranged adjacent to the matching part and an inclined wall below the vertical wall, and the connecting arm is lapped on the inclined wall in an initial state that the hinge assembly is matched with the drawer; the bottom wall is positioned at the lower end of the inclined wall, and the whole body is positioned below the arc-shaped arm in an arc surface shape.

Furthermore, the fixing plate and the side plate are fixed by bolts, a pair of screw holes are formed in opposite corners of the fixing plate and the matching wall, one screw hole penetrates through the pivoting connecting part and the matching part along the length direction of the pivoting connecting part, and the other screw hole is located below one end, far away from the inclined wall, of the bottom wall.

The invention also provides refrigeration equipment which comprises the storage chamber and the drawer arranged in the storage chamber.

Compared with the prior art, the invention has the beneficial effects that: according to the hinge assembly, the arc-shaped arm and the pivot connecting part of the hinge plate are coaxially arranged, so that the area covered by the hinge plate and the opening for the hinge plate to penetrate through are smaller in the rotating process of the hinge plate, and the appearance of the whole hinge assembly is simpler and more attractive.

Drawings

Fig. 1 is a perspective view of an embodiment of a hinge assembly of the present invention showing the hinge assembly in an initial state.

Fig. 2 is a perspective view of the hinge assembly of fig. 1 in use.

Fig. 3 is a front view of the hinge assembly of the embodiment of fig. 2 in use.

Fig. 4 is an exploded view of the components of the hinge assembly of the embodiment of fig. 1 at another angle.

Fig. 5 is a front view of a hinge engaging seat in another embodiment of the hinge assembly of the present invention.

Fig. 6 is a front view of the embodiment of fig. 5 showing the engagement of the hinge plate and the hinge engaging receptacle.

Fig. 7 is a schematic perspective view of an embodiment of a drawer according to the present invention in an open state of a cover.

FIG. 8 is a partial schematic view of a drawer side panel incorporating the hinge assembly of the embodiment of FIG. 1.

Fig. 9 is an enlarged view of a portion of a structure at a in fig. 8.

FIG. 10 is a partial schematic view of a drawer side panel incorporating the hinge assembly of the embodiment of FIG. 5.

Figure 11 is a schematic perspective view of the vacuum extractor and pressure relief assembly of the embodiment of figure 7.

Fig. 12 is a schematic perspective view of the pressure relief assembly of fig. 11 in an open pressure relief state.

Fig. 13 is a perspective view of the pressure relief assembly of fig. 11 in a closed state.

Fig. 14 is a front view of the handle of fig. 11.

Fig. 15 is a schematic perspective view of the plastic package assembly in the drawer in the embodiment of fig. 7.

Fig. 16 is a cross-sectional view of the plastic encapsulated assembly of fig. 15 taken along the direction a-a.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is to be understood that the terms "upper", "lower", and the like, are used for indicating orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used for simplifying the description of the present invention, but do not indicate or imply that the indicated devices must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, should not be construed as limiting the scope of the present invention. Specifically, in the present invention, the direction toward the ground surface is downward with the operation surface of the user as the front surface, and conversely, the direction away from the ground surface is upward, and the descriptions of the other directions are defined with reference to "up" and "down".

In the various drawings of the present invention, some dimensions of structures or portions may be exaggerated relative to other structures for convenience of illustration, and thus, are used only to illustrate the basic structure of the present subject matter.

A hinge assembly 10, as shown in fig. 1-6, comprising: the hinge fixing seat 11, the hinge plate 12 and the pivot connection part 13 arranged between the hinge fixing seat 11 and the hinge plate 12; the hinge plate 12 comprises an arc-shaped arm 121, a supporting arm 123 and a connecting arm 122 which are respectively connected with two ends of the arc-shaped arm 121, the free end of the connecting arm 122 is rotatably connected with the hinge fixing seat 11 through the pivoting connecting part 13, and the pivoting connecting part 13 is positioned at the position of the circle center of the arc-shaped arm 121, so that the area covered by the hinge plate 12 and the opening for the hinge plate 12 to pass through are smaller in the rotating process of the hinge plate 12, the appearance of the whole hinge assembly 10 is simpler and more attractive, in addition, the integral structure of the hinge plate 12 is more compact, and the integral strength of the hinge assembly 10 is further enhanced.

The hinge assembly 10 of the present invention can be applied to the matching between the box body and the cover body or between the box body and the door body, including the case of up-and-down opening or left-and-right opening or front-and-back opening, and the present invention also relates to a drawer with a cover body thereon, the drawer comprises a drawer body 2 and a cover body 20 covering the drawer body 2, and the present invention is described in detail by taking the hinge assembly 10 arranged on the same side of the cover body 20 and the drawer body 2 as an example.

In the present invention, the hinge plate 12 has at least an initial state in which the arc-shaped arm 121 is overlapped with the hinge fixing seat 11 and a use state in which the arc-shaped arm 121 extends out of the hinge fixing seat 11, and when the arc-shaped arm 121 extends out of the hinge fixing seat 11, the maximum limit is a fully opened state of the hinge plate 12.

Specifically, the connecting arm 122 is used to connect the arc-shaped arm 121 and the hinge fixing seat 11, that is, one end of the connecting arm 122 is connected to the arc-shaped arm 121, and the other end is fixed on the hinge fixing seat 11 through the pivot connecting portion 13. In this embodiment, when the hinge plate 12 is in the fully opened state, the length of the connecting arm 122 is sufficient not to extend out of the hinge fixing seat 11, so as to further enhance the overall strength of the hinge plate 12.

Further, the length of the arc-shaped arm 121 is not greater than a quarter of the circumference of the circle where the arc-shaped arm 121 is located, that is, the maximum rotation angle of the hinge plate 12 is 90 degrees, at this time, the cover 20 engaged with the hinge plate 12 is rotated from the horizontal state to the vertical state, so as to ensure that the hinge plate 12 can just support the cover 20.

In this embodiment, a plurality of limit blocks 1211 matched with the hinge fixing seat 11 are disposed on the outer side of the arc-shaped arm 121, so that the hinge plate 12 is limited at a desired position without being completely opened in a use state, and preferably, the limit blocks 1211 are preferably set to positions of 40 °, 50 ° and 60 ° relative to the horizontal, thereby increasing the use experience of a user.

Further, the supporting arm 123 is connected to an end of the arc-shaped arm 121 away from the connecting arm 122, the supporting arm 123 is used for fixing the hinge plate 12 on the cover body 20, preferably, an outer side edge of the supporting arm 123 extends in a vertical direction, and in a state where the hinge plate 12 is completely opened, the outer side edge of the supporting arm 123 is just in a horizontal state, so as to be beneficial to being matched with the cover body 20 and keeping the cover body 20 in the vertical state.

Further, in the initial state, the supporting arm 123 and the connection point of the arc-shaped arm 121 and the connecting arm 122 are respectively located at two sides of the center of the arc-shaped arm 121, so that the hinge plate 12 is compact in overall structure, and the strength of the hinge plate 12 is further enhanced.

Further, the total length of the arc-shaped arm 121 and the support arm 123 is greater than the length of the connecting arm 122, the support arm 123 has an inner side surface 1231 adjacent to the pivot connecting portion 13, the arc-shaped arm 121 has an inner arc surface 1212 adjacent to the pivot connecting portion 13, respectively, in the use state, the linear distance from the inner side surface 1231 of the support arm 123 to the pivot connecting portion 13 is smaller than the linear distance from the inner arc surface 1212 at the farthest linear distance from the arc-shaped arm 121 and the pivot connecting portion 13 to the pivot connecting portion 13, that is, the support arm 123 is in the horizontal position, and the gravity center of the support arm 123 is lower than the gravity center of the arc-shaped arm 121, so as to lower the gravity center of the entire hinge plate 12, and the cover 20 is maintained in the vertical state by the cooperation of the cover 20 and the hinge plate 12 and by the gravity of the cover 20 itself.

Preferably, the angle between the straight line of the outer wall surface of the supporting arm 123 and the tangent line of the connection point of the arc-shaped arm 121 and the connecting arm 122 is between 60 ° and 70 °, so that when the arc-shaped arm 121 extends out of the hinge fixing seat 11, the connecting arm 122 is still in the hinge fixing seat 11, thereby ensuring the stability of the whole structure of the hinge assembly 10.

A limiting groove 124 is formed at the joint of the connecting arm 122 and the arc-shaped arm 121, and in a use state, the limiting groove 124 is matched with the hinge fixing seat 11 to enable the hinge plate 12 to be in a stable state.

Preferably, the connecting arm 122, the arc-shaped arm 121 and the supporting arm 123 are integrally formed, so as to further strengthen the strength of the hinge plate 12, so that the hinge plate 12 can support a heavier cover body 20.

As a preferred embodiment of the present invention, the hinge fixing base 11 includes a fixing plate 111 disposed parallel to the plane of the arc-shaped arm 121, and a position-limiting plate 112 connected to one end of the fixing plate 111, the position-limiting plate 112 is provided with an opening 114 for the hinge plate 12 to pass through, and the hinge fixing base 11 is used for fixing the hinge plate 12 and enabling the hinge plate 12 to rotate with the cover 20 on the plane of the fixing plate 111.

Specifically, the limiting plate 112 is vertically disposed at the upper end of the fixing plate 111 and extends toward one side of the hinge plate 12, when the hinge plate 12 is rotated by 90 ° to be in a fully opened use state, the limiting plate 112 is located in the limiting groove 124 at the connection position of the connecting arm 122 and the arc-shaped arm 121, the connecting arm 122 is attached below the limiting plate 112, the limiting plate 112 is used for limiting the maximum opening angle of the hinge plate 12, and at this time, the supporting arm 123 is just in a horizontal state favorable for supporting the cover body 20.

Further, the hinge fixing seat 11 further includes a left side plate 113 for connecting the limiting plate 112 and the fixing plate 111, the left side plate 113 is disposed adjacent to the opening 114, that is, the left side plate 113 is disposed adjacent to the hinge plate 12.

In this embodiment, as shown in fig. 4, a position-limiting part 1121 is disposed on an inner side wall of the left side plate 113, and the position-limiting part 1121 is used to cooperate with the position-limiting part 1211 on the arc-shaped arm 121, so as to meet the requirement that the hinge plate 12 can be stopped at a desired position. Preferably, the position-limiting portion 1121 is made of an elastic material, and is deformed when being pressed by the position-limiting block 1211 of the arc-shaped arm 121, so that the hinge plate 12 can be freely switched between the initial state and the use state.

The shape of the position-limiting portion 1121 includes, but is not limited to, a triangle, a circle, a rectangle, or a trapezoid.

As a preferred embodiment of the present invention, the pivot connection portion 13 is disposed near the limiting plate 112 and spaced apart from the opening 114, specifically, the pivot connection portion 13 includes a rotation shaft 131 disposed on the hinge fixing seat 11, and a shaft hole 132 disposed at a free end of the connection arm 122 and matched with the rotation shaft 131, where the shaft hole 132 is located at a center of the arc-shaped arm 121, that is, the hinge plate 12 is sleeved outside the rotation shaft 131 through the shaft hole 132 so that the hinge plate 12 can rotate relative to the rotation shaft 131.

It is understood that the rotating shaft 131 can also be disposed at the free end of the connecting arm 122, and the shaft hole 132 can be disposed on the fixing plate 111, both of which can achieve the purpose of rotating the hinge plate 12 relative to the fixing plate 111.

As a preferred embodiment of the present invention, as shown in fig. 5 to 6, the hinge assembly 10 further includes a hinge engaging seat 15 engaged with the hinge fixing seat 11, the hinge fixing seat 11 and the hinge engaging seat 15 form an accommodating space (not shown) for accommodating the hinge plate 12, and specifically, the hinge engaging seat 15 includes an engaging plate 151 parallel to a plane where the fixing plate 111 is located, and a right side plate 155 and a bottom plate 156 for respectively connecting the fixing plate 111 and the limiting plate 112, so that the hinge plate 12 is located in the accommodating space, and the hinge assembly 10 forms a complete structure, thereby improving the applicability of the hinge assembly 10.

Further, the matching plate 151 is provided with a matching portion 153 which protrudes from the matching plate 151 into the accommodating space and is matched and limited with the pivot connection portion 13, in this embodiment, the matching portion 153 is provided with a matching groove which is opened towards the direction of the rotating shaft 131, in the combined state of the hinge assembly 10, the connecting arm 122 is sleeved on the rotating shaft 131, and one end of the rotating shaft 131 far away from the fixing plate 111 is inserted into the matching groove, so that the hinge plate 12 rotates in the accommodating space.

Of course, when the rotating shaft 131 of the pivotal connection portion 13 is disposed on the connecting arm 122, the engaging portion 153 is an engaging groove (not shown) capable of receiving an end of the rotating shaft 131 far from the fixed plate 111, and the hinge plate 12 can be rotated between the fixed plate 111 and the engaging plate 151, which is within the protection scope of the present invention.

Further, the hinge fitting seat 15 further includes an extension plate 154 protruding from the fitting plate 151 into the receiving space 152 to be fitted with the hinge plate 12, and the shape of the extension plate 154 is consistent with the shape of the hinge plate 12 to limit the space in the thickness direction of the hinge plate 12 in the receiving space, so that the hinge plate 12 can be effectively prevented from being displaced in the thickness direction.

Further, the right side plate 155 includes a vertical portion 1551 disposed adjacent to the fitting portion 153, and an inclined portion 1552 below the vertical portion 1551, and in the initial state, the connection arm 122 is caught on the inclined portion 1552, that is, the inclined portion 1552 is used to support the connection arm 122 so as to balance the gravity applied to the hinge plate 12, and when the hinge plate 12 is switched from the initial state to the operating state, the force for lifting the cover body 20 can be effectively reduced, and at the same time, the overall stability of the hinge assembly 10 can be ensured.

The bottom plate 156 is located at the lower end of the inclined portion 1552, is in an arc shape as a whole, and is located below the arc-shaped arm 121 when the hinge plate 12 is in an initial state, so as to support and guide the movement of the arc-shaped arm 121.

It is understood that the right side plate 155 and the bottom plate 156 of the hinge engaging seat 15 can be disposed at corresponding positions on the hinge fixing seat 11, and can also achieve the purpose of engaging with the hinge plate 12.

Further, the fixing plate 111 and the matching plate 151 are fixed by bolts, and a pair of screw holes 14 are formed at opposite corners of the fixing plate 111 and the matching plate 151, so that the stress between the fixing plate 111 and the matching plate 151 can be balanced, and the strength of the whole hinge assembly 10 can be enhanced. In this embodiment, one of the screw holes 14 is disposed at the corner of the pivot connection portion 13, and the other screw hole 14 is disposed below one end of the bottom plate 156 away from the inclined portion 1552, specifically, the screw hole 14 penetrates the pivot connection portion 13 and the fitting plate 151 along the length direction of the pivot connection portion 13, that is, the bolt sequentially penetrates through the rotating shaft 131 and the fitting portion 153, so that the fixing point of the fitting therebetween can be reduced, and the appearance of the hinge assembly 10 is more concise.

The present invention further provides a drawer, as shown in fig. 7 to 10, the drawer includes a drawer body 2 opening upwards, a cover 20 for covering the drawer body 2, and a hinge assembly 10 for connecting the cover 20 and the same side of the drawer body 2, wherein the hinge holder 11 is fixed on a side wall 21 of the drawer body 2, one end of the support arm 123 far away from the hinge holder 11 is fixed on the cover 20, and specifically, the hinge assembly 10 is fixed at the rear ends of the drawer body 2 and the cover 20, so as to facilitate a user to operate at the front of the drawer.

As a preferred embodiment of the present invention, as shown in fig. 7, the side wall 21 is provided with a receiving cavity 211 for receiving the hinge assembly 10, it can be understood that, when the hinge assembly 10 does not have the hinge mating seat 15, the side surface of the side wall 21 corresponding to the hinge fixing seat 11 serves as a mating plate 151, as shown in fig. 9, correspondingly, the mating plate 151 is provided with a mating portion 153 for mating with the pivot connecting portion 13, and an extension plate 154 for mating with the hinge plate 12, and the vertical portion 1551, the inclined portion 1552 and the bottom plate 156 between the fixing plate 111 and the mating plate 153 are the same as those of the hinge mating seat 15 in terms of structure and function, and thus, will not be described in detail.

When the hinge assembly 10 has the components of the hinge mating seat 15, the hinge assembly 10 is directly secured within the receiving cavity, as shown in connection with fig. 10, improving the serviceability of the entire hinge assembly.

As a preferred embodiment of the present invention, the drawer further comprises a control module 70, the control module comprises a control unit (not shown) located in the accommodating space, and an operation display panel 71 communicatively connected to the control unit, specifically, the control unit is communicatively connected to the vacuum pumping device 30 for receiving, processing and sending signals to realize precise control of the specific operation of the drawer.

In a preferred embodiment of the present invention, the drawer is a vacuum drawer, the drawer has a cavity 23 for accommodating articles, the drawer further includes a vacuum pumping device 30, and in order to increase the sealing performance of the drawer, in this embodiment, the cover 20 is provided with a sealing ring 21 matched with the drawer body 2, so as to meet the diversified requirements of users.

Further, as shown in fig. 11, the vacuum device 30 includes a vacuum pump 31, a vacuum tube 32 communicating the vacuum pump 31 with the cavity 23, an exhaust tube 33 communicating the vacuum pump 31 with the outside, and a pressure sensor 34 communicating the vacuum tube 32, so as to implement the vacuum pumping operation before the plastic packaging operation.

In this embodiment, the vacuum pumping device 30 is located at the front of the accommodating space, is disposed adjacent to the control module 70, and further includes a four-way connection member 35 communicating with the vacuum pump 31 in order to optimize the communication manner of the pipelines communicating with the vacuum pump 31, and the exhaust pipe 33 and the four-way connection member 35 are disposed on the vacuum pump 31 at intervals.

The pressure sensor 34 is in communication connection with the control unit to transmit the pressure condition in the cavity 23 to the control unit, so that the control unit can conveniently perform subsequent operations.

As a preferred embodiment of the present invention, the drawer further comprises a pressure relief assembly 40 communicated with the vacuum apparatus 30, as shown in fig. 11 to 14, the pressure relief assembly 40 comprises a relief pipe 41 communicated with the vacuum apparatus 30, a movable structure 42 for sealing an opening of the relief pipe 41 at an end away from the vacuum apparatus 30, a handle 43 located at a side of the movable structure 42, and a transmission structure 44 cooperatively disposed between the movable structure 42 and the handle 43, wherein the transmission structure 44 is configured as: the handle 43 can move the movable structure 42 close to or away from the opening of the air escape pipe 41 through the transmission structure 44. In this embodiment, the pressure relief assembly 40 is located longitudinally outside the drawer. Wherein, the air release pipe 41 is communicated with the vacuum pump 31 through the four-way connecting piece 35, and the pressure release assembly 40 of the embodiment is matched with the vacuum pumping device 30, so that the number of the openings of the cavity 23 communicated with the outside is reduced, and the vacuum degree in the drawer in the plastic packaging process is favorably maintained.

Specifically, the transmission structure 44 includes a sliding block 441 disposed on the movable structure 42, and a sliding slot 442 disposed on one side of the handle 43 close to the movable structure 42, a through hole (not shown) is disposed at a position corresponding to the sliding block 441 on the outer wall 13, the sliding block 441 passes through the through hole to be matched with the sliding slot 442, a rotating shaft portion 433 is disposed on the handle 43, the handle 43 is fixed at an outer side of the outer wall through the rotating shaft portion 433, that is, the handle 43 is rotated, and the handle 43 guides the sliding block 441 through the sliding slot 442 to move so as to drive the movable structure 42 to move along a length direction of the through hole.

Further, the handle 43 includes a handle seat 431 and a handle 431, the rotating shaft portion 433 is disposed on the handle seat 431, the sliding slot 442 is integrally located between the rotating shaft portion 433 and the handle 431 in an arc shape, the sliding slot 442 has a first end 4421 close to the handle 431 and a second end 4422 far from the first end 4421, the distance between the first end 4421 and the rotating shaft portion 433 is greater than the distance between the second end 4422 and the rotating shaft portion 433, when the pressure relief assembly 40 is in an open state, the sliding block 441 is located at the second end, at this time, the sliding block 441 is located above the rotating shaft portion 433, when the pressure relief assembly 40 is in a closed state, the sliding slot 442 rotates to the position where the first end 4421 is located above the rotating shaft portion 433, at this time, the sliding block 441 is located at the first end 4421, because the distances from the first end 4421 and the second end 4422 to the rotating shaft portion 433 are not equal, the sliding slot 442 drives the sliding block 441 to move up and down relative to the rotating shaft portion 433, thereby driving the movable structure 42 to move up and down to realize the state switching of the closing and opening of the air escape pipe 41.

Further, pressure relief component 40 is still including being located run-flat 41 and with connector 45 between the movable structure 42 for change run-flat 41's opening direction, in this embodiment, connector 45 is the L type intercommunication and is in between run-flat 41 and the movable structure 42.

Further, the pressure relief assembly 40 further includes a supporting plate 46 protruding into the accommodating space from the outer wall for supporting the movable structure 42, and an elastic component 47 located between the movable structure 42 and the supporting plate 46, wherein when the movable structure 42 is close to the connector 45, the elastic component 47 is in a compressed state, and an upward abutting force is provided for the movable structure 42 by the elastic force of the elastic component 47, so as to improve the fit between the movable structure 42 and the connector 45.

Further, the movable structure 42 includes adjacent the sealing block 421 of the connector 45, the movable block 422 of the fixed sealing block 421, that is, the sliding block 441 is located on the side of the movable block 422, the movable block 422 is far away from one end of the connector 45 and the elastic component 47 are matched, preferably, the sealing block 421 is made of rubber material, and the sealing block 421 is further reinforced to be matched with the connector 45.

As a preferred embodiment of the present invention, as shown in fig. 15 to 16, a plastic package assembly 60 is disposed in the drawer, which can satisfy a requirement that the plastic package assembly 60 is at least spaced from the inner wall or the cover body 20 at a low temperature of the food, that is, when the plastic package assembly 60 is disposed close to the inner wall, a certain distance is provided between the plastic package assembly 60 and the cover body 20, and when the plastic package assembly 60 is disposed close to the cover body 20, a certain distance is provided between the plastic package assembly 60 and the inner wall, so that when the plastic package assembly is used for using a plastic package function, a plastic package bag for containing food is communicated with the cavity, which facilitates evacuation of air in.

In this embodiment, the plastic package assembly 60 is located at the front of the cavity 23 and has a certain distance from the inner wall, so that the function of conventional storage of the drawer is not affected when the plastic package function is not used.

Specifically, as shown in fig. 15 to 16, the plastic package assembly 60 includes a fixing seat 61 disposed in the cavity 23 and a heating plate 62 disposed on the fixing seat 61, a pressing strip 22 is disposed on the cover 20 at a position corresponding to the heating plate 62, and at least one of the fixing seat 61 and the pressing strip 22 is controlled to move close to the other during the plastic package operation.

In this embodiment, the fixing seat 61 is in communication connection with the control module, when the vacuum in the cavity 23 reaches a set requirement, the plastic package assembly 60 starts to work, at this time, the control module controls the fixing seat 61 to move upwards to the position of the pressing bar 22, and after the plastic package operation is completed, the control module controls the fixing seat 61 to reset. It will be appreciated that the movement of the holder 61 is fine-tuned for ease of operation.

Further, the heating plate 62 comprises a heating plate main body 621 for heating, a vertical plate 622 bent downwards from two ends of the heating plate main body 621, and a connecting plate 623 bent oppositely from an end of the vertical plate 622, wherein the connecting plate 623 is connected with a cable of the refrigeration equipment, so that a distance between the heating plate main body 621 and the connecting plate 623 meets a requirement of an electrical gap of an electrical appliance, and the electrical safety is improved.

Further, the fixing base 61 is provided with a fixing base main body 611 for supporting the heating plate 62, the fixing base main body 611 is provided with a groove 612 for accommodating the heating plate 62, the heating plate main body 621 is located in the groove 612, and the heating plate 62 is located in the groove 612, so that on one hand, the safety of power consumption is increased, and on the other hand, the heat conduction of the heating plate 62 in the cavity 23 is reduced.

Furthermore, the fixing base 61 further includes a side plate 613 extending from the same side of the four end edges of the fixing base main body 611, a cavity (not shown) is formed between the fixing base main body 611 and the side plate 613, and a connecting hole 614 for connecting the groove 612 and the cavity is formed on the fixing base main body 611; the vertical plate 622 penetrates through the connecting hole 614, and the connecting plate 623 and the vertical plate 622 are both located in the cavity, that is, the heating plate main body 621, the vertical plate 622 and the connecting plate 623 are respectively located on two sides of the fixing seat main body 611, so that the power utilization safety is improved.

In this embodiment, the fixing base 61 further includes a supporting column 616 protruding into the cavity from the surface of the fixing base main body 611 away from the groove 612 and used for fixing the heating plate 62, and the supporting column 616 is located between the fixing base main body 611 and the connecting plate 623 and used for fixing the heating wire 62 and ensuring a certain distance between the connecting plate 623 and the heating plate main body 621 on the other hand, so as to satisfy the electrical gap distance of the electrical appliance, preferably, an insulating layer is disposed on the outer side of the supporting column 616 to prevent short circuit and improve electrical safety.

Further, the length of the pressing strip 22 is not greater than the length of the groove 612, and the thickness of the pressing strip 22 is not less than the linear distance from the heating plate 62 to the cover body 20, so that the pressing strip 22 can apply a downward pressure to the heating plate main body 621 in the groove 612 in the plastic packaging process, and the completion of the plastic packaging operation is accelerated.

It can be understood that the groove 612 may not be provided on the fixing seat main body 611, and as long as the heating plate 62 is fixed to the supporting column 616 through the connecting plate 623, the heating of the heating plate is not affected, so as to achieve the purpose of plastic package.

Further, the plastic package subassembly 60 is still including locating the pressure bag tongue 63 at fixing base main part 611 both ends, specifically, pressure bag tongue 63 is including fixing the connecting portion 631 on fixing base main part 611, the portion 631 that compresses tightly that extends towards the fixing base main part 611 middle direction from the tip of connecting portion 631, compress tightly the portion 631 and be higher than the setting of hot plate 62 effectively avoids plastic package bag offset in the evacuation process, realizes accurate plastic envelope.

It can be understood that the front side and the rear side that press bag tongue 63 to be located recess 612 can all realize the location to the plastic envelope bag, in this embodiment, press bag tongue 63 to be located the rear side of recess 612 for the plastic envelope bag that is located under pressing bag tongue 63 has certain distance apart from the sack, does not influence from plastic envelope bag mouth evacuation, makes the position of heating plastic envelope keep away from the position of plastic envelope bag oral area on the plastic envelope bag moreover, realizes the accurate plastic envelope to the plastic envelope bag.

The invention also provides refrigeration equipment (not shown) which comprises the storage compartment and the drawer arranged in the storage compartment, wherein the drawer can move back and forth in the storage compartment.

In summary, the hinge assembly 10 of the present invention, through the design that the pivot connection portion 13 is located at the center of the arc-shaped arm 121 of the hinge plate 12, the area covered by the hinge plate 12 and the opening through which the hinge plate 12 passes are both small during the rotation of the hinge plate 12, so that the appearance of the whole hinge assembly 10 is simple and beautiful.

It should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art will be able to make the description as a whole, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The above detailed description is merely illustrative of possible embodiments of the present invention and is not intended to limit the scope of the invention, which is intended to include all equivalent embodiments or modifications within the scope of the present invention without departing from the technical spirit of the present invention.