CN215464930U - Drawer type paper shredder - Google Patents

Abstract

The utility model relates to a drawer-type paper shredder, which comprises a body, a paper shredding knife, a paper feeding wheel, a paper pressing mechanism and a protective door assembly, wherein the drawer-type paper shredder can be used for placing a plurality of pieces of paper in a drawer at one time, so that a large amount of waste paper can be continuously shredded under the condition of saving time and labor, and the use is convenient; the front edge of the waste paper is pressed and held by the front roller shaft of the paper pressing mechanism, so that the front edge of the waste paper is prevented from floating in the paper feeding process, the middle part of the waste paper is pressed and held by the rear roller shaft, and the waste paper is prevented from retreating in the paper feeding process, so that the stable and smooth transmission of the paper is realized, the phenomenon that the machine core is blocked due to excessive paper feeding at one time is avoided, and the reliability is good; the protective door assembly can cover the paper inlet in a non-paper shredding state, so that the paper shredding knife is sealed in the body, the safety protection performance is improved, the protective door assembly opens the paper inlet in the paper shredding state, normal paper shredding is realized, and the operation is convenient.

Description

Drawer type paper shredder

Technical Field

The utility model relates to a drawer type paper shredder.

Background

The paper shredder is a common office equipment, mainly puts the waste paper between the pair roller of the paper shredder core, rotates the pair roller to shred the waste paper document. The paper shredder can only put a small amount of paper at the paper inlet at one time, and if too much paper is put in the paper shredder, paper jam is easily caused, and the paper shredder is even damaged. Therefore, when a large amount of paper needs to be crushed, the paper can only be manually put into the paper inlet for multiple times, the operation is time-consuming and labor-consuming, and great inconvenience is brought to a user.

In order to solve the above problems, the chinese utility model patent "a shredder with automatic paper feeding" (application No. CN201720812594.5), entitled publication No. CN206868376U, discloses a structure, which comprises a shredder body, a frame, a core roller pair and a paper shredding box arranged in the shredder body, wherein the core roller pair is positioned in the frame, the paper shredding box is positioned under the core roller pair, the frame is provided with a paper feeding port for feeding waste paper between the core roller pair, the structure further comprises a paper feeding mechanism positioned above the core roller pair and a paper pressing mechanism positioned in the paper shredding box, the paper feeding mechanism comprises a placing groove and a motor, and the placing groove is provided with a paper outlet corresponding to the paper feeding port of the frame; one side in the placing groove is provided with a support plate which is obliquely arranged, and one side of the paper outlet is aligned with the support plate; a pressure plate is connected in the placing groove in a sliding manner, the pressure plate is parallel to the support plate, and an elastic piece is arranged between the inner wall of the placing groove far away from one side of the support plate and the pressure plate; the supporting plate is provided with a plurality of through grooves, rolling shafts are arranged outside the supporting plate and positioned at the through grooves, compression rollers are fixed outside the rolling shafts, and the outer walls of the compression rollers extend into the through grooves to be aligned with the inner walls of the supporting plate; the motor is fixed outside the placing groove, and an output shaft of the motor is connected with the rolling shaft through a transmission belt; the paper pressing mechanism comprises a piston column, a plurality of supporting rods and a plurality of pressing rods, a communicated cavity is formed in the bottom of the shredded paper box, cavity channels communicated with the cavity are formed in the inner wall of the shredded paper box, and the number of the cavity channels is the same as that of the supporting rods; the piston column is connected in the cavity in a sealing and sliding manner, the support rod is vertical to the inner wall of the shredded paper box, and the lower end of the pressure rod is positioned in the cavity and hinged with the upper end of the support rod.

The paper shredder can place a large amount of waste paper in the placing groove at one time, and paper is conveyed through the paper feeding mechanism to automatically shred the paper, so that time and labor are saved. However, since the placing grooves are arranged obliquely and vertically, after the waste paper is placed in the placing grooves, the waste paper tends to slide downwards due to gravity, if the pressure given by the pressing plates to the paper is too large, smooth conveying of the waste paper is difficult to realize, and if the pressure given by the pressing plates to the paper is too small, a plurality of pieces of waste paper fall simultaneously to block the movement due to accommodation. Meanwhile, the movement is arranged below the corresponding anti-placement groove, and under the non-paper shredding state, if a hand of a user stretches into the paper by mistake, great danger is easy to exist.

SUMMERY OF THE UTILITY MODEL

The first technical problem to be solved by the utility model is to provide a drawer type paper shredder which can continuously shred a plurality of waste papers so as to save time and labor aiming at the current situation of the prior art.

The second technical problem to be solved by the present invention is to provide a drawer-type shredder that can stably and smoothly transport paper and avoid the jam of the machine core, aiming at the current situation of the prior art.

The third technical problem to be solved by the present invention is to provide a drawer type shredder which can cover the shredding knife in a non-shredding state to improve the safety, aiming at the current situation of the prior art.

The technical scheme adopted by the utility model for solving at least one technical problem is as follows: a drawer type paper shredder comprises a body, a paper shredding knife, a paper feeding wheel, a paper pressing mechanism and a protective door assembly, wherein a drawer which can be drawn out from the front side of the body and used for storing waste paper is arranged on the body, a paper feeding port is formed in the bottom wall of the front portion of the drawer, the paper shredding knife is arranged in the body and located below the drawer and arranged corresponding to the paper feeding port, the paper feeding wheel can be rotatably arranged at the bottom of the drawer, the upper portion of the drawer is exposed out of the front edge of the paper feeding port, the paper pressing mechanism is arranged above the drawer and used for pressing and holding the waste paper so as to enable the waste paper to be fed in order, and the protective door assembly is provided with a sliding plate which is arranged above the paper shredding knife and below the drawer and can open or cover the paper feeding port.

In the present invention, the internal space of the drawer constitutes a used paper storage area, and the paper pressing mechanism includes:

the front roll shaft can be rotatably arranged above the paper inlet of the paper shredder and is used for limiting the front edge of the waste paper and preventing the front edge of the waste paper from floating upwards;

the rear roll shaft is rotatably arranged at the rear side of the front roll shaft, is arranged close to the rear edge of the paper inlet and is used for pressing and holding the waste paper so as to prevent the waste paper from retreating;

the pressing plate is arranged above the front roller shaft and the rear roller shaft and is rotationally connected with the front roller shaft and the rear roller shaft, and at least part of the pressing plate can move up and down and is positioned above a waste paper storage area of the paper shredder and used for adjusting the pressing state of the front roller shaft and the rear roller shaft on waste paper; and

the adjusting mechanism is connected with the pressing plate and used for switching the pressing plate between a first state and a second state, and the front roller shaft and the rear roller shaft are pressed on the waste paper when the pressing plate is in the first state; when the pressing plate is in the second state, the front roller shaft and the rear roller shaft are not in contact with waste paper.

In the above aspect, the rear portion of the platen is rotatably supported above the used paper storage area, the front roller shaft and the rear roller shaft extend in the left-right direction and are arranged in parallel in the front-rear direction, and the front edge of the platen is rotatably connected to the end portion of the front roller shaft and the end portion of the rear roller shaft through the rotating arm, respectively. By adopting the structure, the press plate can be conveniently driven to turn back and forth by taking the rear edge as a rotating shaft, so that the front roller shaft and the rear roller shaft are driven to move up and down, and the paper pressing state is switched.

Preferably, the rotating arm extends forwards and backwards, the front end of the rotating arm is rotatably connected with the end part of the front roller shaft, and the rear end of the rotating arm is rotatably connected with the end part of the rear roller shaft, so that the heights of the front roller shaft and the rear roller shaft can be automatically adjusted according to different stresses. Because under the shredded paper state, the preceding roller is only to exerting pressure to the front edge of waste paper, and then the whole pressure of roller is held on waste paper, when waste paper thickness is great, the height of preceding roller may be less than the height of back roller, adopt above-mentioned swing joint structure, be favorable to according to the height of roller and back roller before waste paper thickness automatic adjustment, make preceding roller offset with the front edge of waste paper all the time, the back roller compresses tightly on waste paper all the time, thereby can prevent that the front edge of waste paper from floating all the time, prevent that waste paper is retreating, be favorable to improving the conveying stability of paper.

In order to facilitate assembly and connection, a first connecting arm extending downwards is arranged at the position, close to the end, of the front edge of the pressing plate, a second connecting arm is formed in the middle of the rotating arm in a protruding mode, and the first connecting arm and the second connecting arm are connected in a rotating mode through matching of a shaft and the hole.

Preferably, the both sides of waste paper storage area are provided with the supporting seat of vertical extension, and it has the shaft hole that corresponds the clamp plate and arrange to open on this supporting seat, the clamp plate is provided with the connecting axle that can rotate the connection with this shaft hole in the side edge department that is close to the rear end, thereby the clamp plate is the state of backward slope gradually downwards forward from the junction of first linking arm and second linking arm with the junction of supporting seat higher than. By adopting the structure, the pressing plate, the front roller shaft and the rear roller shaft are beneficial to always keeping the state of pressing and holding the waste paper downwards through self gravity, thereby keeping the paper pressing effect.

In the utility model, the adjusting mechanism comprises a limiting seat, a limiting block and an elastic part, the limiting seat is arranged beside the waste paper storage area and is arranged corresponding to the middle edge of the pressing plate, the middle part of the limiting block is rotatably connected to the limiting seat, the upper end of the limiting block is positioned below the pressing plate, the first end of the elastic part is connected with the lower edge of the limiting block, the second end of the elastic part is restrained on a paper shredder in front of the elastic part, the upper end of the limiting block overturns forwards to be separated from the lower wall surface of the pressing plate under the first stretching state of the elastic part, and the upper end of the limiting block overturns backwards to be abutted against the lower wall surface of the pressing plate and the pressing plate overturns backwards to a front roller shaft and the rear roller shaft floats upwards under the second stretching state of the elastic part.

The drawer type paper shredder with the paper pressing mechanism comprises a body, a paper shredding cutter, a paper feeding wheel and the paper pressing mechanism, wherein the body is provided with a drawer which can be drawn out from the front side of the body and is used for storing waste paper, the inner space of the drawer forms a waste paper storage area, the paper feeding port is formed in the bottom wall of the front portion of the drawer, the paper shredding cutter is arranged in the body and located below the drawer and is arranged corresponding to the paper feeding port, the paper pressing mechanism is arranged above the drawer, and the paper feeding wheel can be rotatably arranged at the bottom of the drawer and the upper portion of the paper feeding wheel is exposed out of the front edge of the paper feeding port. In a state where the drawer is completely pushed into the body, the used paper is placed in the drawer and located on the rear side of the paper feed opening, the front portion of the used paper is projected forward to cover a part of the paper feed opening, the front edge of the used paper is in contact with the rear side edge of the feed roller, the front roller shaft is located above the feed roller and is arranged slightly rearward, and the front roller shaft, in a state where the front edge of the used paper can be pressed, also keeps the front edge of the used paper in contact with the feed roller, thereby realizing stable conveyance of the used paper.

Preferably, the axial length of preceding roller, back roller is greater than the width of drawer, thereby it gives way the mouth to open on the side bounding wall of drawer and supply preceding roller, the whereabouts pressure of back roller to hold waste paper.

Preferably, the axial length of the front roller shaft and the rear roller shaft is smaller than the width of the drawer, and the front roller shaft and the rear roller shaft are located on the inner side of the drawer in a paper shredding state.

In the utility model, the side coaming of the drawer is provided with a lug which is arranged corresponding to the lower end of the limiting block, the rear edge of the lug forms a guide part which is gradually inclined downwards from front to back so as to be propped against the lower end of the limiting block, and the guide part and the lower end of the limiting block are in guide fit to continuously drive the upper end of the limiting block to turn forwards in the process that the drawer is pushed into the paper shredder. When the drawer is pulled out of the body, the limiting block loses the pressure of the convex blocks on the side wall plates of the drawer, and the upper end of the limiting block is turned upwards and abuts against the bottom of the pressing plate under the action of the elastic part, so that the pressing plate is turned upwards by taking the rear edge as a rotating shaft, the front roller shaft and the rear roller shaft are lifted, and paper can be added conveniently; in the process of filling waste paper into the drawer and pushing the waste paper into the body, the guide part at the rear edge of the convex block gradually enables the upper end of the limiting block to turn forwards, after the drawer is completely pushed into the body, the upper end of the limiting block is separated from the lower wall surface of the pressing plate, the front roller shaft and the rear roller shaft fall under the action of gravity and are pressed and held on the waste paper, the paper is pressed at the front edge of the waste paper by the front roller shaft, and the paper is pressed at the middle part of the waste paper by the rear roller shaft, so that stable paper feeding is realized.

Preferably, the top of the body is provided with a cover plate capable of covering the paper pressing mechanism, the rear edge of the cover plate is rotatably connected to the body, and the cover plate is provided with a paper feeding port arranged corresponding to the paper feeding port. When the quantity of the needed paper shredding is small, for example, less than three paper shredding machines, the waste paper can be directly fed from the paper feeding port to shred the paper without adopting a drawer.

In the above scheme, the body is internally provided with a supporting plate for supporting the drawer, the supporting plate is provided with a paper passing port arranged corresponding to the paper feeding port, the bottom wall of the supporting plate is provided with a positioning plate arranged close to the paper passing port, the sliding plate can be constrained on the positioning plate in a sliding manner relative to the positioning plate, the sliding plate covers the paper passing port and the paper feeding port in a state of being overlapped with the positioning plate, and the sliding plate and the positioning plate are opened in a state of being staggered. Above-mentioned structure is convenient for open the paper feed mouth or cover through sliding of slide, satisfies the shredded paper demand when opening, improves the security when covering.

Preferably, the cross section of the positioning plate is an L-shaped structure, and an accommodating area for accommodating the sliding plate is formed between the transverse part of the L-shaped structure and the lower wall surface of the supporting plate. The vertical part of the L-shaped structure is provided with a guide hole which is through from front to back, and the rear edge of the sliding plate is provided with a guide post which extends backwards and is in sliding fit with the guide hole. The structure is convenient for assembling the sliding plate and improves the stability of the front and back movement of the sliding plate.

Preferably, the guide post is sleeved with a spring, the front end of the spring abuts against the rear end of the sliding plate, and the rear end of the spring abuts against the vertical part of the L-shaped structure, so that the sliding plate keeps the trend of covering the paper passing opening and the paper feeding opening. By adopting the structure, the paper inlet is convenient to cover.

Preferably, the top of the body is provided with a cover plate capable of covering the paper pressing mechanism, the rear edge of the cover plate is rotatably connected to the body, and the cover plate is provided with a paper feeding port arranged corresponding to the paper feeding port, so that when the number of paper to be shredded is small, for example, less than three paper, waste paper can be directly fed from the paper feeding port for shredding without adopting a drawer.

Preferably, the top wall of the body is provided with an assembly opening for installing a cover plate, the rear edge of the cover plate is rotatably connected to the rear edge of the assembly opening, and a transmission assembly capable of allowing the slide plate to cover the paper inlet in the cover plate opening state and allowing the slide plate to open the paper inlet in the cover plate closing state is connected between the cover plate and the slide plate. This structure is convenient for under shredded paper state or non-shredded paper state, through the opening and shutting state of slide switching paper feed mouth to improve the safety protection performance.

Preferably, the end part of the rear edge of the cover plate is rotatably connected with the corresponding body through a rotating shaft, and a torsion spring which can enable the cover plate to keep an angle of 25-120 degrees between the cover plate and the top wall of the body in an opening state is arranged on the rotating shaft, and preferably 30-45 degrees. When the cover plate is positioned at the angle, the paper inlet can be covered by the transmission assembly.

Preferably, the transmission assembly comprises an extension arm and a pull rope, the extension arm is arranged at the rear edge of the cover plate and extends outwards along the cover plate, a first end of the pull rope is connected with the lower end of the extension arm, and a second end of the pull rope penetrates through the supporting plate to be connected with the sliding plate. When the cover plate is in an opening state, the pull rope is in a loosening state, and at the moment, the spring drives the sliding plate to move forwards to cover the paper inlet; under the closed state of the cover plate, the pull rope is tensioned backwards, so that the sliding plate overcomes the elastic force of the spring and moves back to the upper part of the positioning plate, the paper inlet is opened, and the operation is convenient.

Compared with the prior art, the utility model has the advantages that: the utility model provides a drawer type paper shredder, which can place a plurality of pieces of paper in a drawer at one time, thereby continuously shredding a large amount of waste paper under the condition of saving time and labor and being convenient to use; the front edge of the waste paper is pressed and held by the front roller shaft of the paper pressing mechanism, so that the front edge of the waste paper is prevented from floating in the paper feeding process, the middle part of the waste paper is pressed and held by the rear roller shaft, and the waste paper is prevented from retreating in the paper feeding process, so that the stable and smooth transmission of the paper is realized, the phenomenon that the machine core is blocked due to excessive paper feeding at one time is avoided, and the reliability is good; the protective door assembly can cover the paper inlet in a non-paper shredding state, so that the paper shredding knife is sealed in the body, the safety protection performance is improved, the protective door assembly opens the paper inlet in the paper shredding state, normal paper shredding is realized, and the operation is convenient.

Drawings

FIG. 1 is a schematic view of a shredder according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a top view of an embodiment of the present invention;

FIG. 4 is a partial schematic structural view (non-shredded state) of an embodiment of the present invention;

FIG. 5 is a partial schematic view of the structure of an embodiment of the present invention (shredded paper state);

FIG. 6 is a cross-sectional view of an embodiment of the present invention;

fig. 7 is a schematic view of the cover plate and protective door assembly of fig. 6.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 7, the present embodiment provides a drawer-type automatic continuous shredder, which is provided with a paper pressing mechanism to maintain the stability and smoothness of continuous paper feeding.

The drawer type paper shredder of the embodiment comprises a body 2, a paper shredding knife 3, a paper feeding wheel 4, a paper pressing mechanism 1 and a protective door component 8. The body 2 is provided with a drawer 5 which can be drawn out from the front side of the body 2 and is used for storing waste paper, the front side of the drawer 5 is provided with a handle, the edge of the side part of the drawer 5 is provided with a side coaming, the inner space of the drawer 5 forms a waste paper storage area 51, and the bottom wall of the front part of the drawer 5 is provided with a paper inlet 52. The shredder blade 3 is provided in the body 2 below the drawer 5 and is disposed corresponding to the paper feed opening 52. The paper pressing mechanism 1 is arranged above the drawer 5, the paper feeding wheel 4 is rotatably arranged at the bottom of the drawer 5, the upper part of the paper feeding wheel is exposed at the front edge of the paper feeding port 52, and the paper feeding wheel 4 rotates backwards under the driving of the gear set and the driving motor.

In this embodiment, the paper pressing mechanism 1 includes a front roller shaft 11, a rear roller shaft 12, a pressing plate 13 and an adjusting mechanism 14, the front roller shaft 11 is rotatably disposed above the paper feeding port 52 and is used for limiting the front edge of the waste paper and preventing the front edge of the waste paper from floating upward; the rear roller shaft 12 is rotatably provided on the rear side of the front roller shaft 11 and disposed near the rear edge of the paper feed port 52 for pressing against the used paper to prevent it from receding. The pressing plate 13 is provided above the front roller shaft 11 and the rear roller shaft 12 and is rotatably connected with the front roller shaft 11 and the rear roller shaft 12, and at least a part of the pressing plate 13 is located above the used paper storage area 51 so as to be movable up and down, and is used for adjusting the pressing state of the front roller shaft 11 and the rear roller shaft 12 on the used paper. The adjusting mechanism 14 is connected with the pressing plate 13 and is used for switching the pressing plate 13 between a first state and a second state, and when the pressing plate 13 is in the first state, the front roller shaft 11 and the rear roller shaft 12 are pressed on the waste paper; in the second state of the platen 13, the front roller shaft 11 and the rear roller shaft 12 are not in contact with the used paper.

Specifically, the rear portion of the platen 13 is rotatably supported above the used paper storage area 51, the front roller shaft 11 and the rear roller shaft 12 extend right and left and are arranged in parallel front and rear, and the front edge of the platen 13 is rotatably connected to the end portion of the front roller shaft 11 and the end portion of the rear roller shaft 12 by a rotating arm 131. With the structure, the pressing plate 13 can be driven to turn back and forth by taking the rear edge as a rotating shaft, so that the front roller shaft 11 and the rear roller shaft 12 are driven to move up and down, and the paper pressing state is switched.

The rotating arm 131 extends back and forth, the front end of the rotating arm 131 is rotatably connected with the end of the front roller shaft 11, and the rear end of the rotating arm 131 is rotatably connected with the end of the rear roller shaft 12, so that the heights of the front roller shaft 11 and the rear roller shaft 12 can be automatically adjusted according to different forces. Because under the shredded paper state, preceding roller 11 is only to exerting pressure to the leading edge of waste paper, and back roller 12 is whole to be pressed and is held on waste paper, when waste paper thickness is great, the height of preceding roller 11 may be less than the height of back roller 12, adopt above-mentioned swing joint structure, be favorable to according to waste paper thickness automatic adjustment preceding roller 11 with back roller 12's height, make preceding roller 11 offset with the leading edge of waste paper all the time, back roller 12 compresses tightly on waste paper all the time, thereby can prevent that the leading edge of waste paper from floating all the time, prevent that waste paper from retreating, be favorable to improving the conveying stability of paper.

For the convenience of assembly and connection, the front edge of the pressing plate 13 is provided with a first connecting arm 132 extending downward near the end, the middle of the rotating arm 131 is formed with a second connecting arm 1311 protruding upward, and the first connecting arm 132 and the second connecting arm 1311 are rotatably connected through the matching of a shaft and a hole.

The two sides of the used paper storage area 51 are provided with vertically extending supporting bases 6, the supporting bases 6 are provided with shaft holes 61 arranged corresponding to the pressing plates 13, the side edges of the pressing plates 13 near the rear ends are provided with connecting shafts 133 capable of being rotatably connected with the shaft holes 61, and the connecting positions of the pressing plates 13 and the supporting bases 6 are higher than the connecting positions of the first connecting arms 132 and the second connecting arms 1311, so that the pressing plates 13 are in a state of gradually inclining downwards from back to front. With the above structure, the pressing plate 13, the front roller shaft 11 and the rear roller shaft 12 are kept in a state of pressing and holding the waste paper downward all the time by their own weight, thereby maintaining the paper pressing effect.

The adjusting mechanism 14 includes a limiting seat 141, a limiting block 142 and an elastic member 143, the limiting seat 141 is disposed beside the waste paper storage region 51 and disposed corresponding to the middle edge of the pressing plate 13, the middle of the limiting block 142 is rotatably connected to the limiting seat 141 through a pin 1421, the upper end of the limiting block 142 is located below the pressing plate 13, the elastic member 143 is a spring, the first end of the elastic member 143 is connected to the lower edge of the limiting block 142, the second end of the elastic member is constrained on the shredder in front of the elastic member 143, the upper end of the limiting block 142 is turned forward and separated from the lower wall surface of the pressing plate 13 when the elastic member 143 is in the first stretching state, the upper end of the limiting block 142 is turned backward and is abutted against the lower wall surface of the pressing plate 13, the pressing plate 13 is turned backward and turned to the front roller shaft 11, and the rear roller shaft 12 is floated upward when the elastic member 143 is in the second stretching state. The side wall of the drawer 5 is provided with a projection 53 arranged corresponding to the lower end of the stopper 142, the rear edge of the projection 53 forms a guide part 531 which is gradually inclined downwards from front to back so as to be abutted against the lower end of the stopper 142, and the guide part 531 is in guide fit with the lower end of the stopper 142 to continuously drive the upper end of the stopper 142 to turn forwards in the process that the drawer 5 is pushed into the paper shredder. When the drawer 5 is pulled out from the body, the limiting block 142 loses the pressure of the convex block 53 on the side wall plate of the drawer 5, and under the action of the elastic element 143, the upper end of the limiting block 142 turns upwards and abuts against the bottom of the pressing plate 13, so that the pressing plate 13 turns upwards by taking the rear edge as a rotating shaft, and the front roller shaft 11 and the rear roller shaft 12 are lifted up to facilitate paper feeding; when the drawer 5 is filled with waste paper and pushed into the body, the guide portions 531 at the rear edge of the protrusions 53 gradually turn the upper ends of the stoppers 142 forward, and after the drawer 5 is completely pushed into the body, the upper ends of the stoppers 142 are separated from the lower wall surface of the pressing plate 13, the front roller shaft 11, and the rear roller shaft 12 fall under gravity and press the waste paper, the front roller shaft 11 presses the paper at the front edge of the waste paper, and the rear roller shaft 12 presses the paper at the middle of the waste paper, thereby realizing stable paper feeding.

As shown in fig. 4, the axial length of the front roller shaft 11 and the rear roller shaft 12 of the present embodiment is greater than the width of the drawer 5, and the side coaming of the drawer 5 is provided with a relief opening 54 through which the front roller shaft 11 and the rear roller shaft 12 fall to press and hold the waste paper. Alternatively, as shown in fig. 5, the axial length of the front roller shaft 11 and the rear roller shaft 12 is smaller than the width of the drawer 5, and the front roller shaft 11 and the rear roller shaft 12 are positioned inside the drawer 5 in the shredded state.

The top of the body 2 is provided with a cover plate 7 capable of covering the paper pressing mechanism 1, the rear edge of the cover plate 7 is rotatably connected to the body 2, and the cover plate 7 is provided with a paper feeding port 71 arranged corresponding to the paper feeding port 52. When the number of paper shreds is small, for example, less than three paper shreds, the waste paper can be directly fed from the paper feed port 71 to be shredded without using the drawer 5. The cover plate 7 is opened to inspect and maintain the paper pressing mechanism 1 for simple obstacles.

In a state where the drawer 5 is completely pushed into the body 2, the used paper is placed in the drawer 5 and located at the rear side of the paper feed opening 52, the front portion of the used paper is projected forward to cover a part of the paper feed opening 52, the front edge of the used paper is in contact with the rear side edge of the feed roller 4, the front roller shaft 11 is located above the feed roller 4 and is arranged slightly rearward, and the front roller shaft 11 also keeps the front edge of the used paper in contact with the feed roller 4 in a state where the front edge of the used paper can be pressed, thereby achieving stable conveyance of the used paper.

In this embodiment, the body 2 is provided with a supporting plate 21 capable of dividing the body into an upper cavity and a lower cavity, the drawer 5 is supported above the supporting plate 21, and the protective door assembly 8 is arranged below the supporting plate 21.

Specifically, the protective door assembly 8 has a slide plate 81 provided above the shredder blade 3 and below the drawer 5 and capable of opening or covering the paper feed opening 52. The supporting plate 21 is provided with a paper passing opening 211 arranged corresponding to the paper feeding opening 52, the bottom wall of the supporting plate 21 is provided with a positioning plate 82 arranged close to the rear edge of the paper passing opening 52, the sliding plate 81 can be constrained on the positioning plate 82 in a sliding mode relative to the positioning plate 82, the paper passing opening 211 and the paper feeding opening 52 are covered under the condition that the sliding plate 81 is overlapped with the positioning plate 82, and the paper passing opening 211 and the paper feeding opening 52 are opened under the condition that the sliding plate 81 is staggered with the positioning plate 82. The structure is convenient for opening or covering the paper inlet 52 through the sliding of the sliding plate 81, meets the requirement of paper shredding when opening, and improves the safety when covering.

The positioning plate 82 has an L-shaped cross section, and a transverse portion 821 of the L-shaped cross section and a lower wall surface of the supporting plate 21 form a receiving area 820 for receiving the sliding plate 81. The vertical part 822 of the L-shaped structure is provided with a guide hole which is penetrated in the front and back direction, and the rear edge of the sliding plate 81 is provided with a guide post 811 which extends backwards and is in sliding fit with the guide hole. This structure facilitates the assembly of the sliding plate 81 and improves the stability of the forward and backward movement of the sliding plate 81. The outer periphery of the guide post 811 is sleeved with a spring 812, the front end of the spring 812 abuts against the rear end of the sliding plate 81, and the rear end of the spring 812 abuts against the vertical part 822 of the L-shaped structure, so that the sliding plate 81 keeps the tendency of covering the paper passing opening 211 and the paper feeding opening 52. With the above structure, the paper feed port 52 is easily covered.

The top wall of the body 2 is provided with an assembly opening 22 for installing the cover plate 7, the rear edge of the cover plate 7 is rotatably connected with the rear edge of the assembly opening 22, and a transmission component 83 which can allow the sliding plate 81 to cover the paper inlet 52 when the cover plate 7 is in a state of being opened and can allow the sliding plate 81 to open the paper inlet 52 when the cover plate 7 is in a state of being closed is connected between the cover plate 7 and the sliding plate 81. This structure is convenient for under shredded paper state or non-shredded paper state, through the opening and shutting state of slide switching paper feed mouth to improve the safety protection performance.

The end of the rear edge of the cover plate 7 is rotatably connected with the corresponding body 2 through a rotating shaft 23, and a torsion spring 231, preferably 30-45 °, is arranged on the rotating shaft 23 and can keep the cover plate 7 to be 25-120 ° with the top wall of the body 2 in an open state. When the cover plate 7 is at the above angle, the paper feeding port 52 can be covered by the transmission assembly 83.

Specifically, the transmission assembly 83 includes an extension arm 72 and a pulling rope 831, the extension arm 72 is disposed at the rear edge of the cover plate 7 and extends outward along the cover plate 7, a first end of the pulling rope 831 is connected to a lower end of the extension arm 72, and a second end of the pulling rope 831 passes through the supporting plate 21 and is connected to the sliding plate 81. In the state that the cover plate 7 is opened, the pulling rope 831 is in a relaxed state, and at the moment, the spring 812 drives the sliding plate 81 to move forward to cover the paper feeding port 52; in the closed state of the cover 7, the pulling rope 831 is pulled back tightly, so that the sliding plate 81 overcomes the elastic force of the spring 812 and retreats to the upper side of the positioning plate 82, and the paper feeding port 52 is opened, thereby facilitating the operation.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Claims (10)

1. A drawer type paper shredder is characterized in that: comprises a body (2), a paper shredding knife (3), a paper feeding wheel (4), a paper pressing mechanism (1) and a protective door component (8), a drawer (5) which can be drawn out from the front side of the body (2) and is used for storing waste paper is arranged on the body (2), a paper feed opening (52) is formed in the bottom wall of the front part of the drawer (5), the paper shredding knife (3) is arranged in the body (2), is positioned below the drawer (5) and is arranged corresponding to the paper feed opening (52), the paper feeding wheel (4) is rotatably arranged at the bottom of the drawer (5), the upper part of the paper feeding wheel is exposed out of the front edge of the paper feeding port (52), the paper pressing mechanism (1) is arranged above the drawer (5), the protective door assembly (8) is used for being pressed on the waste paper so as to orderly feed the waste paper, and is provided with a sliding plate (81) which is arranged above the paper shredding knife and below the drawer (5) and can open or cover the paper feeding opening (52).

2. The drawer shredder according to claim 1, wherein: the inner space of the drawer (5) constitutes a used paper storage area (51), and the paper pressing mechanism includes

The front roll shaft (11) is rotatably arranged above a paper inlet (52) of the paper shredder and is used for limiting the front edge of the waste paper and preventing the front edge of the waste paper from floating upwards;

a rear roller shaft (12) rotatably provided on the rear side of the front roller shaft (11) and disposed near the rear edge of the paper feed port (52) for pressing and holding the waste paper to prevent it from moving backward;

the pressing plate (13) is arranged above the front roller shaft (11) and the rear roller shaft (12) and is rotationally connected with the front roller shaft (11) and the rear roller shaft (12), and at least part of the pressing plate (13) can move up and down and is positioned above a waste paper storage area (51) of the paper shredder and used for adjusting the pressing state of the front roller shaft (11) and the rear roller shaft (12) on waste paper; and

the adjusting mechanism (14) is connected with the pressing plate (13) and used for switching the pressing plate (13) between a first state and a second state, and the front roller shaft (11) and the rear roller shaft (12) are pressed on the waste paper when the pressing plate (13) is in the first state; when the pressing plate (13) is in the second state, the front roller shaft (11) and the rear roller shaft (12) are not in contact with waste paper.

3. The drawer shredder of claim 2, wherein: the rear part of the pressing plate (13) is rotatably supported above the waste paper storage area (51), the front roller shaft (11) and the rear roller shaft (12) extend left and right and are arranged in parallel front and back, and the front edge of the pressing plate (13) is rotatably connected with the end part of the front roller shaft (11) and the end part of the rear roller shaft (12) through a rotating arm (131).

4. The drawer shredder according to claim 3, wherein: the rotating arm (131) extends forwards and backwards, the front end of the rotating arm (131) is rotatably connected with the end part of the front roller shaft (11), and the rear end of the rotating arm (131) is rotatably connected with the end part of the rear roller shaft (12), so that the height of the front roller shaft (11) and the height of the rear roller shaft (12) can be automatically adjusted according to different stress.

5. The drawer shredder of claim 2, wherein: the two sides of the waste paper storage area (51) are provided with vertically extending supporting seats (6), shaft holes (61) which are arranged corresponding to the pressing plates (13) are formed in the supporting seats (6), and connecting shafts (133) which can be rotatably connected with the shaft holes (61) are arranged at the side edges of the pressing plates (13) close to the rear ends.

6. The drawer shredder of claim 2, wherein: the adjusting mechanism (14) comprises a limiting seat (141), a limiting block (142) and an elastic piece (143), the limiting seat (141) is arranged beside the waste paper storage area (51) and arranged corresponding to the middle edge of the pressing plate (13), the middle of the limiting block (142) is rotatably connected to the limiting seat (141), the upper end of the limiting block (142) is located below the pressing plate (13), the first end of the elastic piece (143) is connected with the lower edge of the limiting block (142), the second end of the elastic piece is constrained on a paper shredder in front of the limiting block, when the elastic piece (143) is in a first stretching state, the upper end of the limiting block (142) is turned forwards so as to be separated from the lower wall surface of the pressing plate (13), when the elastic piece (143) is in a second stretching state, the upper end of the limiting block (142) is turned backwards so as to be abutted against the lower wall surface of the pressing plate (13) and the pressing plate (13) is turned backwards to the front roll shaft (11), The rear roll shaft (12) floats upwards.

7. The drawer type shredder according to any one of claims 1 to 6, wherein: the body (2) is internally provided with a supporting plate (21) used for supporting the drawer (5), the supporting plate (21) is provided with a paper passing opening (211) arranged corresponding to the paper feeding opening (52), a positioning plate (82) arranged close to the paper passing opening (52) is arranged on the bottom wall of the supporting plate (21), the sliding plate (81) can be constrained on the positioning plate (82) in a sliding mode relative to the positioning plate (82), the sliding plate (81) and the positioning plate (82) cover the paper passing opening (211) and the paper feeding opening (52) in an overlapped mode, and the sliding plate (81) and the positioning plate (82) are opened in a staggered mode.

8. The drawer shredder according to claim 7, wherein: the top of the body (2) is provided with a cover plate (7) capable of covering the paper pressing mechanism (1), and the cover plate (7) is provided with a paper feeding port (71) arranged corresponding to the paper feeding port (52).

9. The drawer shredder of claim 8, wherein: an assembly opening (22) for installing a cover plate (7) is formed in the top wall of the body (2), the rear edge of the cover plate (7) is rotatably connected to the rear edge of the assembly opening (22), and a transmission assembly (83) capable of allowing the slide plate (81) to cover the paper inlet (52) in the state that the cover plate (7) is turned open and allowing the slide plate (81) to open the paper inlet (52) in the state that the cover plate (7) is closed is connected between the cover plate (7) and the slide plate (81).

10. The drawer shredder of claim 9, wherein: the transmission assembly (83) comprises an extension arm (72) and a pull rope (831), the extension arm (72) is arranged at the rear edge of the cover plate (7) and extends outwards along the cover plate (7), the first end of the pull rope (831) is connected with the lower end of the extension arm (72), and the second end of the pull rope (831) penetrates through the supporting plate (21) and is connected with the sliding plate (81).

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