A drawer-type paper shredder

Abstract

The present invention relates to a drawer-type paper shredder, comprising a body, a paper shredder, a paper feeding wheel, a paper pressing mechanism, and a protective door assembly. The present invention provides a drawer-type paper shredder, in which multiple sheets of paper can be placed at one time, so that a large amount of waste paper can be continuously shredded while saving time and effort, and the use is convenient; the present invention presses and holds the front edge of the waste paper through the front roller of the paper pressing mechanism to prevent the front edge of the waste paper from floating up during the paper feeding process, and presses and holds the middle part of the waste paper through the rear roller to prevent the waste paper from retreating during the paper feeding process, thereby achieving stable and smooth transmission of the paper, avoiding clogging of the machine core due to excessive paper feeding at one time, and having good reliability; the protective door assembly of the present invention can cover the paper feed port in the non-paper shredding state, so that the paper shredder is sealed in the body, and the safety protection performance is improved; in the paper shredding state, the protective door assembly opens the paper feed port to achieve normal paper shredding, and the operation is convenient.

Description

Technical Field

[0001] The invention relates to a drawer type paper shredder. Background Art

[0002] A shredder is a commonly used office equipment. It mainly puts waste paper between the rollers of the shredder core and rotates the rollers to shred the waste paper documents. A shredder can only put a small amount of paper in the paper inlet at a time. If too much paper is put in, it is easy to cause paper jams or even damage the shredder. Therefore, when a large amount of paper needs to be shredded, the paper can only be put into the paper inlet manually in multiple times, which is time-consuming and laborious, and brings great inconvenience to the user.

[0003] In order to solve the above problems, the Chinese utility model patent "A shredder with automatic paper feeding" (application number: CN201720812594.5) with authorization announcement number CN206868376U discloses a structure, which includes a shredder body, a frame, a core roller and a shredder box are arranged in the shredder body, the core roller is located in the frame, the shredder box is located directly below the core roller, the frame is provided with a paper inlet for feeding waste paper into the core roller, and also includes a paper feeding mechanism located above the core roller and a paper pressing mechanism located in the shredder box, the paper feeding mechanism includes a placement slot and a motor, the placement slot is provided with a paper outlet corresponding to the paper inlet of the frame; one side of the placement slot is an inclined support plate, and one side of the paper outlet is aligned with the support plate ; A pressure plate is slidably connected in the placement groove, the pressure plate is parallel to the support plate, and an elastic member is provided between the inner wall of the placement groove away from the support plate and the pressure plate; a plurality of through grooves are provided on the support plate, and a roller is provided outside the support plate at the through groove, a pressure roller is fixed outside the roller, and the outer wall of the pressure roller extends into the through groove and is aligned with the inner wall of the support plate; the motor is fixed outside the placement groove, and the output shaft of the motor is connected to the roller through a transmission belt; the paper pressing mechanism includes a piston column, a plurality of support rods and a plurality of pressure rods, a connected cavity is provided at the bottom of the shredder box, and a cavity connected to the cavity is provided on the inner wall of the shredder box, and the number of cavities is the same as the number of support rods; the piston column is sealingly slidably connected in the cavity, the support rod is sealingly slidably connected in the cavity, the support rod is perpendicular to the inner wall of the shredder box, the lower end of the pressure rod is located in the cavity and is hinged to the upper end of the support rod.

[0004] The above-mentioned shredder can place a large amount of waste paper in the placement slot at one time, and automatically shred the paper by transmitting the paper through the paper feeding mechanism, saving time and effort. However, since the placement slot is tilted and arranged vertically, after the waste paper is placed in it, it tends to slide downward due to gravity. If the pressure applied by the pressure plate to the paper is too large, it will be difficult to achieve smooth transmission of the waste paper. If the pressure applied by the pressure plate to the paper is too small, it will cause multiple pieces of waste paper to fall at the same time and block the movement. At the same time, the movement is arranged below the corresponding anti-placement slot. In the non-shredding state, if a person's hand accidentally reaches in, it is easy to be very dangerous. Summary of the invention

[0005] The first technical problem to be solved by the present invention is to provide a drawer-type shredder capable of continuously shredding multiple pieces of waste paper to save time and labor in view of the current status of the prior art.

[0006] The second technical problem to be solved by the present invention is to provide a drawer-type paper shredder that can ensure stable and smooth paper transmission and avoid blockage of the machine core in view of the current status of the prior art.

[0007] The third technical problem to be solved by the present invention is to provide a drawer-type shredder that can cover the shredder blade in a non-shredding state to improve safety in view of the current status of the prior art.

[0008] The technical solution adopted by the present invention to solve at least one of the above technical problems is: a drawer-type shredder, comprising a body, a shredder, a paper feed wheel, a paper pressing mechanism and a protective door assembly, wherein the body is provided with a drawer for storing waste paper which can be pulled out from the front side of the body, the paper feed port is opened on the bottom wall of the front part of the drawer, the shredder is arranged in the body and is located below the drawer and arranged corresponding to the paper feed port, the paper feed wheel is rotatably arranged at the bottom of the drawer and the upper part is exposed at the front edge of the paper feed port, the paper pressing mechanism is arranged above the drawer and is used to press on the waste paper so that the waste paper can be fed in an orderly manner, and the protective door assembly has a slide plate which is arranged above the shredder and below the drawer and can open or cover the paper feed port.

[0009] In the present invention, the internal space of the drawer constitutes a waste paper storage area, and the paper pressing mechanism includes:

[0010] The front roller shaft is rotatably arranged above the paper inlet of the shredder and is used to limit the front edge of the waste paper to prevent the front edge of the waste paper from floating upward;

[0011] A rear roller shaft is rotatably arranged at the rear side of the front roller shaft and arranged near the rear edge of the paper inlet, and is used to press on the waste paper to prevent it from retreating;

[0012] A pressure plate, disposed above the front roller and the rear roller and rotatably connected to the front roller and the rear roller, wherein at least a portion of the pressure plate is movable up and down and is located above the waste paper storage area of ​​the shredder, and is used to adjust the pressure holding state of the front roller and the rear roller on the waste paper; and

[0013] The adjusting mechanism is connected to the pressing plate and is used to switch the pressing plate between a first state and a second state. When the pressing plate is in the first state, the front roller and the rear roller are pressed on the waste paper; when the pressing plate is in the second state, the front roller and the rear roller are not in contact with the waste paper.

[0014] In the above scheme, the rear part of the pressing plate is rotatably supported above the waste paper storage area, the front roller and the rear roller extend left and right and are arranged parallel to each other, and the front edge of the pressing plate is rotatably connected to the ends of the front roller and the rear roller respectively through a rotating arm. The above structure makes it easy to drive the pressing plate to flip forward and backward with its rear edge as the rotation axis, thereby driving the front roller and the rear roller to move up and down, and switching the paper pressing state.

[0015] Preferably, the rotating arm extends forward and backward, the front end of the rotating arm is rotatably connected to the end of the front roller, and the rear end of the rotating arm is rotatably connected to the end of the rear roller, so that the front roller and the rear roller can automatically adjust their heights according to different forces. Since in the paper shredding state, the front roller only applies pressure to the front edge of the waste paper, and the rear roller is pressed on the waste paper as a whole, when the waste paper is thick, the height of the front roller may be lower than the height of the rear roller. The above-mentioned movable connection structure is conducive to automatically adjusting the height of the front roller and the rear roller according to the thickness of the waste paper, so that the front roller is always against the front edge of the waste paper and the rear roller is always pressed against the waste paper, so that the front edge of the waste paper can be prevented from floating and the waste paper can be prevented from retreating, which is conducive to improving the transmission stability of the paper.

[0016] To facilitate assembly and connection, a first connecting arm extending downward is provided near the end of the front edge of the pressure plate, and a second connecting arm is formed by a middle portion of the rotating arm protruding upward. The first connecting arm and the second connecting arm are rotatably connected through the cooperation of the shaft and the hole.

[0017] Preferably, vertically extending support seats are provided on both sides of the waste paper storage area, and shaft holes corresponding to the arrangement of the pressure plate are provided on the support seats. The pressure plate is provided with a connecting shaft rotatably connected to the shaft hole at the side edge near the rear end, and the connection between the pressure plate and the support seat is higher than the connection between the first connecting arm and the second connecting arm, so that the pressure plate is in a state of gradually tilting downward from the back to the front. The above structure is conducive to keeping the pressure plate and the front roller and the rear roller in a state of always pressing the waste paper downward by their own gravity, thereby maintaining the paper pressing effect.

[0018] In the present invention, the adjustment mechanism includes a limit seat, a limit block and an elastic member. The limit seat is arranged beside the waste paper storage area and corresponds to the middle edge of the pressure plate. The middle part of the limit block is rotatably connected to the limit seat, and the upper end of the limit block is located below the pressure plate. The first end of the elastic member is connected to the lower edge of the limit block, and the second end is constrained to the shredder in front of it. When the elastic member is in a first tensile state, the upper end of the limit block flips forward to separate from the lower wall of the pressure plate. When the elastic member is in a second tensile state, the upper end of the limit block flips backward to abut against the lower wall of the pressure plate and the pressure plate flips backward until the front roller shaft and the rear roller shaft float upward.

[0019] A drawer-type shredder using the above-mentioned paper pressing mechanism comprises a body, a shredder, a paper feed wheel and the paper pressing mechanism, wherein the body is provided with a drawer for storing waste paper which can be pulled out from the front side of the body, the internal space of the drawer constitutes the waste paper storage area, the paper feed port is opened on the bottom wall of the front part of the drawer, the shredder is arranged in the body and located below the drawer and arranged corresponding to the paper feed port, the paper pressing mechanism is arranged above the drawer, and the paper feed wheel can be rotatably arranged at the bottom of the drawer and the upper part is exposed at the front edge of the paper feed port. When the drawer is fully pushed into the body, the waste paper is placed in the drawer and located at the rear side of the paper feed port, the front part of the waste paper extends forward to cover part of the paper feed port, the front edge of the waste paper contacts the rear edge of the paper feed wheel, the front roller is located above the paper feed wheel and arranged slightly backward, and the front roller can press and hold the front edge of the waste paper and also keep the front edge of the waste paper in contact with the paper feed wheel, thereby realizing the stable transmission of the waste paper.

[0020] Preferably, the axial lengths of the front roller shaft and the rear roller shaft are greater than the width of the drawer, and a clearance opening is provided on the side panels of the drawer for the front roller shaft and the rear roller shaft to fall down and hold the waste paper.

[0021] Preferably, the axial lengths of the front roller shaft and the rear roller shaft are smaller than the width of the drawer, and in the paper shredding state, the front roller shaft and the rear roller shaft are located on the inner side of the drawer.

[0022] In the present invention, a protrusion is arranged on the side panel of the drawer corresponding to the lower end of the limit block, and the rear edge of the protrusion forms a guide portion which gradually tilts downward from the front to the back so as to abut against the lower end of the limit block. When the drawer is pushed into the shredder, the guide portion cooperates with the guide at the lower end of the limit block to continuously drive the upper end of the limit block to flip forward. When the drawer is pulled out from the body, the limit block loses the resisting pressure of the protrusion on the drawer side panel, and under the action of the elastic member, the upper end of the limit block flips upward and resists against the bottom of the pressure plate, so that the pressure plate flips upward with its rear edge as the rotation axis, and the front roller and the rear roller are lifted, which is convenient for adding paper; in the process of loading waste paper in the drawer and pushing it into the body, the guide part of the rear edge of the above-mentioned protrusion gradually flips the upper end of the limit block forward, and when the drawer is completely pushed into the body, the upper end of the limit block is separated from the lower wall of the pressure plate, and the pressure plate and the front roller and the rear roller fall down under the action of gravity and press on the waste paper, the front roller presses the paper at the front edge of the waste paper, and the rear roller presses the paper at the middle of the waste paper, thereby achieving stable paper feeding.

[0023] Preferably, a cover plate capable of covering the paper pressing mechanism is provided on the top of the body, the rear edge of the cover plate is rotatably connected to the body, and a paper feeding port corresponding to the paper feeding port is provided on the cover plate. When the number of shredded papers is small, for example, less than three sheets, the drawer shredding can be omitted, and the waste paper can be directly put into the paper feeding port for shredding.

[0024] In the above scheme, the body has a support plate for supporting the drawer, and a paper outlet corresponding to the paper feed port is provided on the support plate. A positioning plate arranged near the paper outlet is provided on the bottom wall of the support plate, and the slide plate can be constrained on the positioning plate by sliding relative to the positioning plate. When the slide plate overlaps with the positioning plate, the paper outlet and the paper feed port are covered, and when the slide plate is misaligned with the positioning plate, the paper outlet and the paper feed port are opened. The above structure facilitates opening or covering the paper feed port by sliding the slide plate, which meets the paper shredding requirements when opened and improves safety when covered.

[0025] Preferably, the cross section of the positioning plate is an L-shaped structure, and the lateral part of the L-shaped structure and the lower wall of the support plate form an accommodation area for accommodating the slide. The vertical part of the L-shaped structure is provided with a guide hole that passes through the front and back, and the rear edge of the slide is provided with a guide column that extends backward and slidably cooperates with the guide hole. This structure facilitates the assembly of the slide and improves the stability of the slide moving forward and backward.

[0026] Preferably, a spring is sleeved on the outer periphery of the guide post, the front end of the spring abuts against the rear end of the slide plate, and the rear end of the spring abuts against the vertical portion of the L-shaped structure, so that the slide plate maintains a tendency to cover the paper feed port and the paper inlet. The above structure is used to facilitate covering the paper inlet.

[0027] Preferably, a cover plate capable of covering the paper pressing mechanism is provided on the top of the main body, the rear edge of the cover plate is rotatably connected to the main body, and a paper feeding port corresponding to the paper inlet is opened on the cover plate. When the number of sheets of paper to be shredded is small, for example, less than three sheets, the drawer shredding is not required, and waste paper can be directly put into the paper feeding port for shredding.

[0028] Preferably, the top wall of the body is provided with an assembly opening for installing the cover plate, the rear edge of the cover plate is rotatably connected to the rear edge of the assembly opening, and a transmission assembly is connected between the cover plate and the slide plate, which allows the slide plate to cover the paper inlet when the cover plate is opened, and allows the slide plate to open the paper inlet when the cover plate is closed. This structure facilitates switching the opening and closing state of the paper inlet through the slide plate in the paper shredding state or the non-paper shredding state, thereby improving the safety protection performance.

[0029] Preferably, the end of the rear edge of the cover is rotatably connected to the corresponding body via a shaft, and the shaft is provided with a torsion spring that enables the cover to maintain an angle of 25 to 120° between the cover and the top wall of the body when the cover is opened, preferably 30 to 45°. When the cover is at the above angle, the paper inlet can be covered by the transmission assembly.

[0030] Preferably, the transmission assembly includes an extension arm and a pull cord, wherein the extension arm is disposed at the rear edge of the cover plate and extends outward along the cover plate, the first end of the pull cord is connected to the lower end of the extension arm, and the second end of the pull cord passes through the support plate and is connected to the slide plate. When the cover plate is opened, the pull cord is in a relaxed state, at which time the spring drives the slide plate to move forward to cover the paper inlet; when the cover plate is closed, the pull cord is pulled backward to make the slide plate overcome the spring force and retreat to the top of the positioning plate, thereby opening the paper inlet, which is easy to operate.

[0031] Compared with the prior art, the advantages of the present invention are as follows: the present invention provides a drawer-type paper shredder, in which multiple sheets of paper can be placed at one time, so that a large amount of waste paper can be continuously shredded while saving time and effort, and the use is convenient; the present invention presses the front edge of the waste paper through the front roller of the paper pressing mechanism to prevent the front edge of the waste paper from floating up during the paper feeding process, and presses the middle part of the waste paper through the rear roller to prevent the waste paper from retreating during the paper feeding process, thereby achieving stable and smooth transmission of the paper, avoiding clogging of the machine core due to excessive paper feeding at one time, and having good reliability; the protective door assembly of the present invention can cover the paper feed port in the non-paper shredding state, thereby sealing the paper shredder in the body, improving the safety protection performance, and in the paper shredding state, the protective door assembly opens the paper feed port to achieve normal paper shredding, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a paper shredder according to an embodiment of the present invention;

[0033] Figure 2 for Figure 1 A cross-sectional view of

[0034] Figure 3 A top view of an embodiment of the present invention;

[0035] Figure 4 It is a partial structural schematic diagram of an embodiment of the present invention (non-paper shredding state);

[0036] Figure 5 It is a partial structural schematic diagram of an embodiment of the present invention (paper shredding state);

[0037] Figure 6 is a cross-sectional view of an embodiment of the present invention;

[0038] Figure 7 for Figure 6 Schematic diagram of the matching structure of the middle cover and the protective door assembly. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below with reference to the accompanying drawings.

[0040] like Figures 1 to 7As shown, this embodiment provides a drawer-type automatic continuous paper shredder, which is provided with a paper pressing mechanism to maintain the stability and smoothness of continuous paper feeding.

[0041] The drawer-type shredder of this embodiment includes a body 2, a shredder blade 3, a paper feed wheel 4, a paper pressing mechanism 1, and a protective door assembly 8. The body 2 is provided with a drawer 5 for storing waste paper that can be pulled out from the front side of the body 2. The drawer 5 has a handle on the front side, and the side edge of the drawer 5 has a side panel. The internal space of the drawer 5 constitutes a waste paper storage area 51, and a paper feed port 52 is opened on the bottom wall of the front part of the drawer 5. The shredder blade 3 is arranged in the body 2 and below the drawer 5, corresponding to the paper feed port 52. The paper pressing mechanism 1 is arranged above the drawer 5, and the paper feed wheel 4 is rotatably arranged at the bottom of the drawer 5 and the upper part is exposed at the front edge of the paper feed port 52. The paper feed wheel 4 rotates backward under the drive of the gear set and the drive motor.

[0042] In this embodiment, the paper pressing mechanism 1 includes a front roller 11, a rear roller 12, a pressure plate 13 and an adjustment mechanism 14. The front roller 11 is rotatably disposed above the paper inlet 52, and is used to limit the front edge of the waste paper to prevent the front edge of the waste paper from floating upward; the rear roller 12 is rotatably disposed at the rear side of the front roller 11 and arranged close to the rear edge of the paper inlet 52, and is used to press on the waste paper to prevent it from retreating. The pressure plate 13 is disposed above the front roller 11 and the rear roller 12 and is rotatably connected to the front roller 11 and the rear roller 12. At least a part of the pressure plate 13 can be moved up and down and is located above the waste paper storage area 51, and is used to adjust the pressure holding state of the front roller 11 and the rear roller 12 on the waste paper. The adjusting mechanism 14 is connected to the pressing plate 13 and is used to switch the pressing plate 13 between a first state and a second state. When the pressing plate 13 is in the first state, the front roller 11 and the rear roller 12 are pressed on the waste paper; when the pressing plate 13 is in the second state, the front roller 11 and the rear roller 12 are not in contact with the waste paper.

[0043] Specifically, the rear portion 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 parallel to each other, and the front edge of the pressing plate 13 is rotatably connected to the ends of the front roller shaft 11 and the ends of the rear roller shaft 12 through the rotating arm 131. With the above structure, it is easy to drive the pressing plate 13 to flip forward and backward with its rear edge as the rotating axis, thereby driving the front roller shaft 11 and the rear roller shaft 12 to move up and down, and switching the paper pressing state.

[0044] The rotating arm 131 extends forward and backward, and the front end of the rotating arm 131 is rotatably connected to the end of the front roller 11, and the rear end of the rotating arm 131 is rotatably connected to the end of the rear roller 12, so that the front roller 11 and the rear roller 12 can automatically adjust their heights according to different forces. Since in the paper shredding state, the front roller 11 only applies pressure to the front edge of the waste paper, and the rear roller 12 is pressed on the waste paper as a whole, when the waste paper is thick, the height of the front roller 11 may be lower than the height of the rear roller 12. The above-mentioned movable connection structure is conducive to automatically adjusting the height of the front roller 11 and the rear roller 12 according to the thickness of the waste paper, so that the front roller 11 always contacts the front edge of the waste paper, and the rear roller 12 always presses on the waste paper, so as to always prevent the front edge of the waste paper from floating up and prevent the waste paper from retreating, which is conducive to improving the transmission stability of the paper.

[0045] To facilitate assembly and connection, a first connecting arm 132 extending downward is provided at the front edge of the pressure plate 13 near the end, and a second connecting arm 1311 is formed by a middle portion of the rotating arm 131 protruding upward. The first connecting arm 132 and the second connecting arm 1311 are rotatably connected through the cooperation of the shaft and the hole.

[0046] A vertically extending support seat 6 is provided on both sides of the waste paper storage area 51. The support seat 6 is provided with an axial hole 61 corresponding to the arrangement of the pressure plate 13. The pressure plate 13 is provided with a connecting shaft 133 rotatably connected to the axial hole 61 at the side edge near the rear end. The connection between the pressure plate 13 and the support seat 6 is higher than the connection between the first connecting arm 132 and the second connecting arm 1311, so that the pressure plate 13 is in a state of gradually tilting downward from the back to the front. The above structure is conducive to keeping the pressure plate 13 and the front roller shaft 11 and the rear roller shaft 12 in a state of always pressing the waste paper downward by their own gravity, thereby maintaining the paper pressing effect.

[0047] The above-mentioned adjustment mechanism 14 includes a limit seat 141, a limit block 142 and an elastic member 143. The limit seat 141 is arranged beside the waste paper storage area 51 and corresponds to the middle edge of the pressing plate 13. The middle part of the limit block 142 is rotatably connected to the limit seat 141 through a pin shaft 1421. The upper end of the limit 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 limit block 142, and the second end is constrained on the shredder in front of it. When the elastic member 143 is in a first tension state, the upper end of the limit block 142 flips forward to separate from the lower wall of the pressing plate 13. When the elastic member 143 is in a second tension state, the upper end of the limit block 142 flips backward to abut against the lower wall of the pressing plate 13 and the pressing plate 13 flips backward until the front roller shaft 11 and the rear roller shaft 12 float upward. A protrusion 53 corresponding to the lower end of the limit block 142 is provided on the side panel of the drawer 5, and the rear edge of the protrusion 53 forms a guide portion 531 which gradually tilts downward from the front to the back so as to abut against the lower end of the limit block 142. When the drawer 5 is pushed into the shredder, the guide portion 531 cooperates with the guide of the lower end of the limit block 142 to continuously drive the upper end of the limit block 142 to flip forward. When the drawer 5 is pulled out from the body, the limit block 142 loses the pressing force of the protrusion 53 on the side panel of the drawer 5. Under the action of the elastic member 143, the upper end of the limit block 142 turns upward and presses against the bottom of the pressing plate 13, so that the pressing plate 13 turns upward with its rear edge as the rotation axis, and the front roller shaft 11 and the rear roller shaft 12 are lifted, which is convenient for adding paper. In the process of loading waste paper into the drawer 5 and pushing it into the body, the guide part 531 at the rear edge of the protrusion 53 gradually turns the upper end of the limit block 142 forward. When the drawer 5 is completely pushed into the body, the upper end of the limit block 142 is separated from the lower wall of the pressing plate 13. The pressing plate 13 and the front roller shaft 11 and the rear roller shaft 12 fall down under the action of gravity and press on 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 achieving stable paper feeding.

[0048] like Figure 4 As shown, the axial lengths of the front roller shaft 11 and the rear roller shaft 12 of this embodiment are greater than the width of the drawer 5, and a clearance opening 54 is provided on the side panel of the drawer 5 for the front roller shaft 11 and the rear roller shaft 12 to fall down and hold the waste paper. Figure 5 As shown, the axial lengths of the front roller shaft 11 and the rear roller shaft 12 are smaller than the width of the drawer 5 . In the paper shredding state, the front roller shaft 11 and the rear roller shaft 12 are located on the inner side of the drawer 5 .

[0049] A cover plate 7 is provided on the top of the body 2 to cover the paper pressing mechanism 1. The rear edge of the cover plate 7 is rotatably connected to the body 2. The cover plate 7 is provided with a paper feeding port 71 arranged corresponding to the paper feeding port 52. When the number of shredded papers is small, for example, less than three sheets, the drawer 5 may not be used for shredding, and waste paper may be directly put into the paper feeding port 71 for shredding. The cover plate 7 may be opened to inspect and repair simple obstructions of the paper pressing mechanism 1.

[0050] When the drawer 5 is fully pushed into the body 2, waste paper is placed in the drawer 5 and is located at the rear side of the paper inlet 52. The front part of the waste paper extends forward to cover part of the paper inlet 52. The front edge of the waste paper contacts the rear edge of the paper feeding wheel 4. The front roller 11 is located above the paper feeding wheel 4 and slightly rearward. The front roller 11 can press and hold the front edge of the waste paper and keep the front edge of the waste paper in contact with the paper feeding wheel 4, thereby achieving stable transmission of the waste paper.

[0051] In this embodiment, a support plate 21 is provided in the body 2 to separate the body 2 into an upper cavity and a lower cavity. The drawer 5 is supported on the support plate 21 , and the protective door assembly 8 is provided below the support plate 21 .

[0052] Specifically, the protective door assembly 8 has a slide plate 81 which is arranged above the paper shredder 3 and below the drawer 5 and can open or cover the paper feed port 52. A paper feed port 211 corresponding to the paper feed port 52 is provided on the support plate 21, and a positioning plate 82 arranged near the rear edge of the paper feed port 52 is provided on the bottom wall of the support plate 21. The slide plate 81 can be constrained to slide relative to the positioning plate 82. When the slide plate 81 overlaps with the positioning plate 82, the paper feed port 211 and the paper feed port 52 are covered. When the slide plate 81 and the positioning plate 82 are misaligned, the paper feed port 211 and the paper feed port 52 are opened. The above structure facilitates opening or covering the paper feed port 52 by sliding the slide plate 81, which meets the paper shredding requirements when opened and improves safety when covered.

[0053] The cross section of the positioning plate 82 is an L-shaped structure, and a accommodating area 820 for accommodating the slide plate 81 is formed between the horizontal part 821 of the L-shaped structure and the lower wall surface of the support plate 21. A guide hole that passes through the front and back is opened on the vertical part 822 of the L-shaped structure, and a guide column 811 that extends backward and slidably cooperates with the guide hole is provided at the rear edge of the slide plate 81. This structure facilitates the assembly of the slide plate 81 and improves the stability of the slide plate 81 moving forward and backward. A spring 812 is sleeved on the outer periphery of the guide column 811, and the front end of the spring 812 abuts against the rear end of the slide plate 81, and the rear end of the spring 812 abuts against the vertical part 822 of the L-shaped structure, so that the slide plate 81 maintains the tendency to cover the paper port 211 and the paper feed port 52. The above structure is adopted to facilitate covering the paper feed port 52.

[0054] The top wall of the body 2 is provided with an assembly opening 22 for mounting the cover plate 7, 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 is connected between the cover plate 7 and the slide plate 81, which allows the slide plate 81 to cover the paper feed port 52 when the cover plate 7 is opened, and allows the slide plate 81 to open the paper feed port 52 when the cover plate 7 is closed. This structure facilitates switching the opening and closing state of the paper feed port through the slide plate in the paper shredding state or the non-paper shredding state, thereby improving the safety protection performance.

[0055] The end of the rear edge of the cover plate 7 is rotatably connected to the corresponding body 2 via a rotating shaft 23, and a torsion spring 231 is provided on the rotating shaft 23 to enable the cover plate 7 to maintain an angle of 25 to 120 degrees, preferably 30 to 45 degrees, between the cover plate 7 and the top wall of the body 2 when the cover plate 7 is opened. When the cover plate 7 is at the above angle, the paper inlet 52 can be covered by the transmission assembly 83.

[0056] Specifically, the transmission assembly 83 includes an extension arm 72 and a pull cord 831. The extension arm 72 is disposed at the rear edge of the cover plate 7 and extends outward along the cover plate 7. The first end of the pull cord 831 is connected to the lower end of the extension arm 72, and the second end of the pull cord 831 passes through the support plate 21 and is connected to the slide plate 81. When the cover plate 7 is opened, the pull cord 831 is in a relaxed state. At this time, the spring 812 drives the slide plate 81 to move forward to cover the paper inlet 52. When the cover plate 7 is closed, the pull cord 831 is pulled backward to make the slide plate 81 overcome the elastic force of the spring 812 and retreat to the top of the positioning plate 82, so that the paper inlet 52 is opened, which is convenient for operation.

[0057] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A drawer-type paper shredder, characterized in that: The utility model comprises a body (2), a paper shredder (3), a paper feed wheel (4), a paper pressing mechanism (1) and a protective door assembly (8); the body (2) is provided with a drawer (5) for storing waste paper which can be drawn out from the front side of the body (2); a paper feed opening (52) is provided on the bottom wall of the front part of the drawer (5); the paper shredder (3) is arranged in the body (2) and below the drawer (5) and arranged corresponding to the paper feed opening (52); the paper feed wheel (4) is rotatably arranged at the bottom of the drawer (5) and the upper part is exposed at the front edge of the paper feed opening (52); the paper pressing mechanism (1) is arranged above the drawer (5) and is used for pressing on the waste paper so that the waste paper can be fed in an orderly manner; the protective door assembly (8) has a slide plate (81) which is arranged above the paper shredder and below the drawer (5) and can open or cover the paper feed opening (52); The inner space of the drawer (5) constitutes a waste paper storage area (51), and the paper pressing mechanism comprises A front roller shaft (11) is rotatably disposed above the paper inlet (52) of the shredder and is used to limit the front edge of the waste paper to prevent the front edge of the waste paper from floating upward; A rear roller shaft (12) is rotatably arranged at the rear side of the front roller shaft (11) and arranged close to the rear edge of the paper inlet (52), and is used to press on the waste paper to prevent it from retreating; A pressing plate (13) is disposed above the front roller (11) and the rear roller (12) and is rotatably connected to the front roller (11) and the rear roller (12); at least a portion of the pressing plate (13) is located above the waste paper storage area (51) of the shredder so as to be movable up and down, and is used to adjust the pressure holding state of the front roller (11) and the rear roller (12) on the waste paper; and an adjusting mechanism (14) connected to the pressing plate (13) and used for switching the pressing plate (13) between a first state and a second state; 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; 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 the waste paper; Vertically extending support seats (6) are arranged on both sides of the waste paper storage area (51), and shaft holes (61) corresponding to the arrangement of the pressing plate (13) are opened on the support seats (6), and the pressing plate (13) is provided with a connecting shaft (133) rotatably connected to the shaft hole (61) at the side edge near the rear end; The regulating mechanism (14) comprises a limiting seat (141), a limiting block (142) and an elastic member (143); the limiting seat (141) is arranged beside the waste paper storage area (51) and corresponds to the middle edge of the pressing plate (13); the middle part 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 member (143) is connected to the lower end of the limiting block (142); The first end of the limit block (142) is connected to the edge and the second end is constrained on the shredder in front of it. When the elastic member (143) is in the first stretched state, the upper end of the limit block (142) flips forward to separate from the lower wall of the pressure plate (13). When the elastic member (143) is in the second stretched state, the upper end of the limit block (142) flips backward to abut against the lower wall of the pressure plate (13) and the pressure plate (13) flips backward until the front roller shaft (11) and the rear roller shaft (12) float upward.

2. The drawer-type shredder according to claim 1, characterized in that: 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 parallel to each other; the front edge of the pressing plate (13) is rotatably connected to the end of the front roller shaft (11) and the end of the rear roller shaft (12) through a rotating arm (131).

3. The drawer-type shredder according to claim 2, characterized in that: The rotating arm (131) extends forward and backward, the front end of the rotating arm (131) is rotatably connected to the end of the front roller shaft (11), and the rear end of the rotating arm (131) is rotatably connected to the end of the rear roller shaft (12), so that the front roller shaft (11) and the rear roller shaft (12) can automatically adjust their heights according to different forces.

4. The drawer-type shredder according to any one of claims 1 to 3, characterized in that: The body (2) comprises a support plate (21) for supporting the drawer (5); a paper feed opening (211) arranged corresponding to the paper feed opening (52) is formed on the support plate (21); a positioning plate (82) arranged close to the paper feed opening (211) is arranged on the bottom wall of the support plate (21); the slide plate (81) is constrained on the positioning plate (82) to slide relative to the positioning plate (82); the slide plate (81) and the paper feed opening (211) are covered when they overlap with the positioning plate (82); and the slide plate (81) and the positioning plate (82) are opened when they are misaligned.

5. The drawer-type shredder according to claim 4, characterized in that: A cover plate (7) capable of covering the paper pressing mechanism (1) is arranged on the top of the main body (2), and a paper feeding port (71) arranged corresponding to the paper feeding port (52) is opened on the cover plate (7).

6. The drawer-type shredder according to claim 5, characterized in that: The top wall of the body (2) is provided with an assembly opening (22) for mounting a cover plate (7); the rear edge of the cover plate (7) is rotatably connected to the rear edge of the assembly opening (22); a transmission assembly (83) is connected between the cover plate (7) and the slide plate (81) and allows the slide plate (81) to cover the paper feed opening (52) when the cover plate (7) is in an open state, and allows the slide plate (81) to open the paper feed opening (52) when the cover plate (7) is in a closed state.

7. The drawer-type shredder according to claim 6, characterized in that: The transmission assembly (83) comprises an extension arm (72) and a pull rope (831), wherein the extension arm (72) is arranged at the rear edge of the cover plate (7) and extends outward along the cover plate (7), the first end of the pull rope (831) is connected to the lower end of the extension arm (72), and the second end of the pull rope (831) passes through the support plate (21) and is connected to the slide plate (81).

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