1. The utility model provides a dustproof mechanism of printer paper feed which characterized in that includes:

the tray is obliquely arranged above one side of a paper inlet of the printer and is used for placing and carrying paper, a turning plate is rotatably connected at the paper inlet, and a torsional spring is arranged at the rotary connection position and is used for driving the turning plate to turn over to seal the paper inlet;

the auxiliary wheel is arranged at the other side of the paper inlet relative to the tray, a shaft lever is axially fixed in the auxiliary wheel in a penetrating manner, a paper feeding mechanism is arranged in the printer, and one end of the shaft lever is in transmission connection with the paper feeding mechanism and is used for transmitting the auxiliary wheel to synchronously rotate when paper is fed;

the friction paper twisting part is arranged on the outer side of the periphery of the auxiliary wheel and is designed to surround an unsealed annular structure on the auxiliary wheel, and after the friction paper twisting part rotates to drive auxiliary paper feeding, the annular gap of the friction paper twisting part is right opposite to the paper feeding port and is parallel and level with the side end of the paper feeding port.

2. The dustproof mechanism for paper feeding of printer as claimed in claim 1, wherein the outer end of the turnover plate is designed to be a convex arc transition shape.

3. The dustproof mechanism for paper feeding of printer as claimed in claim 1, wherein the turning plate is made of transparent material.

4. The dustproof mechanism for paper feeding of printer as claimed in claim 1, wherein the friction paper feeding unit is made of rubber.

5. The paper feeding dustproof mechanism for printer of claim 1, wherein the paper feeding mechanism comprises a bracket, the bracket is fixedly arranged in the printer, a supporting plate is fixed on the bracket, a paper conveying shaft transversely penetrates through the bracket, a paper pickup wheel is coaxially fixed on the paper conveying shaft, the paper pickup wheel rotates close to the upper part of the supporting plate, is used for conveying and feeding paper along the supporting plate, the supporting plate is designed to be a hollow structure, a rotating roller is arranged in the supporting plate, a conveying belt is tensioned on the rotating roller and is attached to the top end in the supporting plate for conveying, a roller shaft is coaxially fixed at one end of the rotating roller, the roll shaft penetrates out of the supporting plate, a shallow groove is arranged at the position, located at the paper twisting wheel, of the top end of the supporting plate, the printer is internally provided with a motor, and the output end of the motor is mechanically connected with a transmission part to synchronously transmit the paper conveying shaft and the roller shaft to rotate in the same direction.

6. The dustproof mechanism for paper feeding of printer as claimed in claim 5, wherein the transmission part comprises a driving gear, one end of the driving gear is mechanically connected to the output shaft of the motor, the other end of the driving gear is coaxially fixed to the end of the roller shaft penetrating through the supporting plate, a driven gear is coaxially fixed to the end of the paper feeding shaft penetrating out of the supporting plate, and a transmission gear is engaged and connected between the driven gear and the driving gear.

7. The dustproof mechanism for paper feeding of printer as claimed in claim 5, wherein the output shaft of said motor is coaxially connected to a primary pulley, one end of said shaft is connected to a secondary pulley, and a belt is wound around the tension ring between said primary pulley and said secondary pulley.

8. The paper feeding dustproof mechanism for printer as claimed in claim 1, wherein at least two of said auxiliary wheels are provided and are evenly spaced along said shaft.

Background

The printer is one of the common tools used in people's life and work, and is used for printing the operation result or intermediate result of the computer on the paper according to the specified format with the number, letter, symbol, graph, etc. recognized by people, however, in the current printers, especially the common ink-jet printers, etc. the paper inlet is located above the printer, so that the impurities such as dust, paper scraps, etc. are easy to enter the printer from the paper inlet, and further the subsequent normal paper feeding and normal printing quality are affected, so as to increase the occurrence probability of printing failure, even the long-term accumulation of the impurities such as dust, paper scraps, etc. is easy to cause the serious damage inside the printer plug, etc. to affect the service life and maintenance cost of the printer, for this reason, there is also the structural design of installing the exposed dust cap at the paper inlet to prevent the entering of dust, impurities, etc., but increased the trouble of opening the lock operation repeatedly when adding paper or changing paper undoubtedly at every turn, and opened at every turn and also increased the chance that gets into impurity such as dust, wastepaper, and current shield design also hardly accomplishes the effect of complete fine sealing, and this kind of outer formula dustproof construction that leaks influences the aesthetic property of printer seriously simultaneously.

Disclosure of Invention

In view of the above, one or more embodiments of the present disclosure provide a dustproof mechanism for printer paper feeding to achieve a hidden dustproof structure at a paper inlet of a printer, and to cooperate with efficient paper feeding.

In view of the above, one or more embodiments of the present specification provide a printer paper feed dustproof mechanism including:

the tray is obliquely arranged above one side of the paper inlet of the printer and is used for placing and carrying paper, the paper inlet is rotatably connected with a turning plate, and the rotating connection part is provided with a torsional spring and is used for driving the turning plate to turn over to seal the paper inlet;

the auxiliary wheel is arranged at the other side of the paper inlet relative to the tray, a shaft lever is axially fixed in the auxiliary wheel in a penetrating manner, a paper feeding mechanism is arranged in the printer, and one end of the shaft lever is in transmission connection with the paper feeding mechanism and is used for transmitting the auxiliary wheel to synchronously rotate when paper is fed;

the friction paper twisting part is arranged on the outer side of the periphery of the auxiliary wheel and is designed to be in an unclosed annular structure surrounding the auxiliary wheel, and after the friction paper twisting part rotates to drive auxiliary paper feeding, the annular gap of the friction paper twisting part is opposite to the paper feeding port and is flush with the side end of the paper feeding port.

Preferably, the outer head end of the turnover plate is designed to be in a convex arc transition shape.

Preferably, the turning plate is made of transparent materials.

Preferably, the friction paper twisting part is made of rubber.

Preferably, the paper feed mechanism is including the bracket, the bracket fixed frame is located in the printer, be fixed with the layer board on the bracket, transversely wear to be equipped with the defeated paper axle on the bracket, defeated epaxial coaxial paper roller that is fixed with of paper, the paper roller next-door neighbour layer board top rotates, be used for carrying the paper feed along the layer board, the layer board design is hollow structure, be equipped with the commentaries on classics roller in the layer board, the tensioning is equipped with the conveyer belt on the commentaries on classics roller, conveyer belt laminating layer board inner top conveying, commentaries on classics roller one end coaxial fixation has the roller, the roller runs through out the layer board, the layer board top is located paper roller department and has seted up the shallow slot, be equipped with the motor in the printer, the output mechanical connection of motor has the transmission portion, with synchronous transmission defeated paper axle and roller syntropy rotation.

Preferably, the transmission part comprises a driving gear, one end of the driving gear is mechanically connected with an output shaft of the motor, the other end of the driving gear and one end of the roll shaft penetrating out of the supporting plate are coaxially fixed, a driven gear is coaxially fixed at one end of the paper conveying shaft penetrating out of the supporting plate, and a transmission gear is connected between the driven gear and the driving gear in a meshed mode.

Preferably, the output shaft of the motor is also coaxially connected with a primary belt wheel, one end of the shaft rod is connected with a secondary belt wheel, and a belt is wound around the tensioning ring between the primary belt wheel and the secondary belt wheel.

Preferably, at least two auxiliary wheels are arranged and are evenly distributed at intervals along the shaft rod.

From the above, it can be seen that the paper feeding dustproof mechanism for a printer provided in one or more embodiments of the present disclosure is provided with a tray, the tray is obliquely disposed above one side of a paper feeding port of the printer for placing a supporting paper to be fed, particularly, the paper feeding port is rotatably connected to a turning plate, and a torsional spring is disposed at a rotational connection position, so that when the dustproof mechanism is used, a bottom end of a paper presses the turning plate to be inserted into the paper feeding port, the turning plate is elastically pressed between the paper and the paper feeding port by a restoring elastic force of the torsional spring, and always keeps the elastic pressing along with the consumption of the paper feeding to efficiently seal the paper feeding port until the paper is completely used, the turning plate completely turns over and seals the paper feeding port under the elastic force of the torsional spring, thereby achieving an efficient complete sealing effect to prevent impurities such as dust and paper scraps from entering, but simultaneously, the turning plate elastically presses against the paper to generate a frictional resistance of the paper feeding, the fault probability that the printer is easy to slip or insufficient in conveying paper feeding in subsequent paper feeding is undoubtedly increased, an auxiliary wheel is arranged on the other side, opposite to the tray, of the paper feeding opening, a shaft rod is axially and fixedly arranged on the auxiliary wheel in a penetrating mode, one end of the shaft rod is in transmission connection with a paper feeding mechanism inside the printer, so that the auxiliary wheel is driven to synchronously rotate during paper feeding, a friction paper twisting part is arranged on the outer side of the periphery of the auxiliary wheel, particularly, the friction paper twisting part is designed to be of an unsealed annular structure surrounding the auxiliary wheel, friction paper twisting is synchronously rotated through the friction paper twisting part to achieve the function of assisting paper feeding and conveying, after the paper feeding part is rotated and conveyed, an annular notch of the friction paper twisting part is right opposite to the paper feeding opening, the notch is flush with the side end of the paper feeding opening, so that a protruding part of the friction paper twisting part is prevented from generating gaps, the effect of high-efficiency and complete sealing of the paper feeding opening is influenced, and the high-efficiency and complete sealing effect of dust prevention of the paper feeding opening of the printer is achieved, and has the matching auxiliary paper feeding effect.

Drawings

In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a paper feed port without paper according to an embodiment of the present invention;

FIG. 3 is a top view of an axle and auxiliary wheel of an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an auxiliary wheel according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a paper feeding mechanism according to an embodiment of the present invention.

In the figure: 1. a tray; 2. a paper inlet; 3. turning over a plate; 4. an auxiliary wheel; 41. a friction paper twisting part; 5. a shaft lever; 6. a paper feeding mechanism; 61. a bracket; 62. a support plate; 63. a paper feed shaft; 64. a paper rolling wheel; 65. rotating the roller; 651. a roll shaft; 66. a conveyor belt; 67. shallow-groove; 68. a motor; 69. a transmission section; 691. a driving gear; 692. a driven gear; 693. a transmission gear; 7. a primary pulley; 8. a secondary pulley; 9. a belt.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.

It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

A paper feeding dustproof mechanism of a printer comprises a tray 1, the tray 1 is obliquely arranged above one side of a paper feeding port 2 of the printer and used for placing and supporting paper feeding, a turning plate 3 is rotatably connected at the paper feeding port 2, a torsional spring is arranged at the rotating connection position and used for driving the turning plate 3 to turn and seal the paper feeding port 2, an auxiliary wheel 4 is arranged at the other side of the paper feeding port 2 relative to the tray 1, a shaft rod 5 is axially and fixedly penetrated through the auxiliary wheel 4, a paper feeding mechanism 6 is arranged in the printer, one end of the shaft rod 5 is in transmission connection with the paper feeding mechanism 6 and used for driving the auxiliary wheel 4 to synchronously rotate when feeding paper, a friction paper twisting part 41 is arranged at the circumferential outer side of the auxiliary wheel 4, the friction paper twisting part 41 is designed to be in an annular structure which is not sealed on the auxiliary wheel 4, and rotates through the friction paper twisting part 41 to drive the annular gap of the friction paper twisting part 41 to be right opposite to the paper feeding port 2 after auxiliary paper feeding, and is flush with the side end of the paper inlet 2.

The invention sets the tray 1, the tray 1 is obliquely arranged above one side of the paper inlet 2 of the printer and is used for placing and supporting paper feeding, in particular, the paper inlet 2 is rotatably connected with the turning plate 3, and the rotating connection position is provided with the torsional spring, so when in use, the bottom end of paper presses the turning plate 3 to be inserted into the paper inlet 2, the turning plate 3 is reset by the torsional spring to elastically press between the paper and the paper inlet 2, and always keeps elastic pressing along with the paper feeding consumption, the paper inlet 2 is efficiently sealed, until the paper is completely used up, the turning plate 3 completely turns over and seals the paper inlet 2 under the elastic force of the torsional spring, thereby achieving the efficient and complete sealing effect to prevent the impurities such as dust, paper scraps and the like from entering, but simultaneously, the turning plate 3 elastically presses against the paper, thereby generating the frictional resistance of paper feeding, undoubtedly increasing the probability of easy slipping or insufficient failure in the subsequent paper feeding in the printer, an auxiliary wheel 4 is arranged at the other side of the paper inlet 2 relative to the tray 1, a shaft lever 5 is axially fixed on the auxiliary wheel 4 in a penetrating way, one end of the shaft lever 5 is connected with a paper feeding mechanism 6 in the printer in a transmission way, so that the auxiliary wheel 4 is synchronously driven to rotate during paper feeding, a friction paper twisting part 41 is arranged at the circumferential outer side of the auxiliary wheel 4, and particularly, the friction paper twisting part 41 is designed to be an annular structure which is not closed on the auxiliary wheel 4, so that friction paper twisting is synchronously rotated by the friction paper twisting part 41 to play a role of assisting paper feeding and conveying, after the rotation conveying, an annular notch of the friction paper twisting part 41 is right opposite to the paper inlet 2, and the notch is level with the side end of the paper inlet 2 so as to avoid the convex part of the friction paper twisting part 41 from generating gaps and influencing the high-efficiency and complete sealing effect at the paper inlet 2, thereby realizing the high-efficiency and complete sealing and dust prevention at the paper inlet 2 of the printer, and has the matching auxiliary paper feeding effect.

In the embodiment of the invention, the outer head end of the turnover plate 3 is designed to be in a convex arc transition shape, so that the turnover plate is closed and is further beneficial to efficient paper feeding and conveying.

In the embodiment of the invention, the turning plate 3 is made of transparent materials, so that the paper feeding or impurity accumulation condition of the paper feeding port 2 can be observed conveniently.

In the embodiment of the present invention, the friction paper feeding portion 41 is made of rubber material and is used for conveying friction paper to assist paper feeding.

In the embodiment of the invention, the paper feeding mechanism 6 comprises a bracket 61, the bracket 61 is fixed in the printer, a support plate 62 is fixed on the bracket 61, a paper feeding shaft 63 transversely penetrates through the bracket 61, a paper twisting wheel 64 is coaxially fixed on the paper feeding shaft 63, the paper twisting wheel 64 is closely adjacent to the upper part of the support plate 62 and is used for conveying paper along the support plate 62, the support plate 62 is designed to be a hollow structure, a rotating roller 65 is arranged in the support plate 62, a conveying belt 66 is arranged on the rotating roller 65 in a tensioning manner, the conveying belt 66 is attached to the inner top end of the support plate 62 for conveying, a roller shaft 651 is coaxially fixed at one end of the rotating roller 65, the roller shaft 651 penetrates out of the support plate 62, a shallow groove 67 is arranged at the top end of the paper twisting wheel 64, a motor 68 is arranged in the printer, a transmission part 69 is mechanically connected at the output end of the motor 68 and synchronously transmits the paper feeding shaft 63 and the roller shaft 651 to rotate in the same direction, so that when the paper twisting wheel 64 normally presses and conveys paper, the thickness of a piece is not enough to extend into the shallow groove 67 and is influenced by the conveying belt 66, therefore, the paper is normally conveyed along the supporting plate 62, when two pieces of paper are rolled into the bottom end of the paper pickup wheel 64 to be conveyed due to the influence of factors such as the moisture of the paper at the paper feeding end or the tight pressing of newly added paper, the paper at the bottom layer extends into the shallow groove 67 and is conveyed by the conveyor belt 66, and the paper at the bottom end is reversely braked by the conveyor belt 66 to avoid the paper from being rolled into the bottom end due to the synchronous transmission of the motor 68, namely the paper conveying shaft 63 and the roller shaft 651 rotate in the same direction, namely the conveying direction of the paper conveying shaft 63 is opposite to the conveying direction of the conveyor belt 66 driven by the roller shaft 651.

In the embodiment of the present invention, the transmission portion 69 includes a driving gear 691, one end of the driving gear 691 is mechanically connected with the output shaft of the motor 68, the other end of the driving gear 691 and the roller shaft 651 penetrate through one end of the supporting plate 62 to be coaxially fixed, one end of the paper feeding shaft 63 penetrates through the supporting plate 61 to be coaxially fixed with a driven gear 692, a transmission gear 693 is engaged and connected between the driven gear 692 and the driving gear 691, so that the driving gear 691 and the roller shaft 651 are driven to rotate by power output of the motor 68, and meanwhile, the driving gear 691 drives the driven gear 692 to rotate in an engaged manner through the transmission gear 693, so that the paper feeding shaft 63 is driven to rotate synchronously, and therefore, synchronous transmission of the motor 68 and the paper feeding shaft 63 and the roller shaft 651 rotate in the same direction are realized.

In the embodiment of the invention, the output shaft of the motor 68 is also coaxially connected with a primary pulley 7, one end of the shaft rod 5 is connected with a secondary pulley 8, and a belt 9 is wound around the tensioning ring between the primary pulley 7 and the secondary pulley 8, so that the power output of the motor 68 is used for sequentially driving the primary pulley 7, the belt 9 and the secondary pulley 8, and the synchronous rotation of the auxiliary wheel 4 is realized.

In the embodiment of the present invention, at least two auxiliary wheels 4 are provided and are uniformly spaced along the shaft 5.

In the paper feeding dustproof mechanism of the printer, when in use, a tray 1 is obliquely arranged above one side of a paper feeding port 2 of the printer and used for placing and carrying paper feeding, a turning plate 3 is rotatably connected at the paper feeding port 2, a torsional spring is arranged at the rotating connection position, so that the bottom end of paper is pressed against the turning plate 3 to be inserted into the paper feeding port 2, the turning plate 3 is elastically pressed between the paper and the paper feeding port 2 by the restoring elastic force of the torsional spring, the elastic pressing is always kept along with the paper feeding consumption of the paper to efficiently seal the paper feeding port 2 until the paper is completely used up, the turning plate 3 is completely turned over under the elastic force of the torsional spring to seal the paper feeding port 2 so as to prevent impurities such as dust, paper scraps and the like from entering, meanwhile, an auxiliary wheel 4 is arranged at the other side of the paper feeding port 2 opposite to the tray 1, a shaft lever 5 is axially fixedly arranged on the auxiliary wheel 4, one end of the shaft lever 5 is in transmission connection with a paper feeding mechanism 6 in the printer, thereby during the paper feed, transmission auxiliary wheel 4 synchronous rotation in the lump, auxiliary wheel 4 circumference outside is equipped with friction paper rub portion 41, and the design is the annular structure who does not seal on encircleing auxiliary wheel 4, thereby rub the paper rubbing portion 41 synchronous rotation friction paper rubbing through the friction, with supplementary paper feed transport, and rotate the back of carrying, the cyclic annular breach department of friction paper rub portion 41 is just relative to paper feed mouth 2, and breach department and paper feed mouth 2 side end looks parallel and level, in order to avoid the convex part output clearance of friction paper rub portion 41, with the high-efficient totally enclosed effect in influence paper feed mouth 2 department, realize printer paper feed mouth 2 department high-efficient totally enclosed dirt-proof from this, and possess the supplementary paper feed efficiency of matched with in the lump.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.

It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.