Paper feeding and limiting structure of paper shredder and paper shredder

Abstract

The utility model belongs to the technical field of paper shredders, particularly relates to a paper feeding and limiting structure of a paper shredder and the paper shredder, and aims to solve the problems of paper jam, cutter damage or reduction of paper shredding efficiency and the like caused by excessive paper feeding if more paper is stuffed into a paper inlet of the paper shredder in the using process of the paper shredder. The bottom of the box body is not closed, and a penetrating opening is formed in the center of the top of the box body. Through the two limiting plates, the stacking thickness of paper entering the paper shredder is controlled, and excessive paper is prevented from entering the paper inlet, so that the problems of paper jam, cutter damage or reduction of paper shredding efficiency and the like caused by excessive paper feeding are effectively prevented, the unnecessary maintenance cost is reduced, the service life of the paper shredder is prolonged, and the paper shredder is suitable for popularization and application. And the adjusting assembly can flexibly adjust the distance between the two limiting plates according to the paper feeding superposition thickness requirements of the paper inlets in different paper shredder bodies, so that the paper feeding and limiting structure of the paper shredder has wider applicability.

Description

Technical Field

[0001] This utility model relates to the field of paper shredder technology, and in particular to a paper feeding and limiting structure for a paper shredder and a paper shredder. Background Technology

[0002] A paper shredder is a secure and confidential office device suitable for destroying confidential documents in various types of offices. It mainly consists of blades, a motor, and transmission gears. The motor provides power to rotate the transmission gears, which in turn transmit the power to the shafts of the blades. The teeth on the two blades mesh with each other, thus breaking the paper documents into shreds. Currently, during the use of a paper shredder, if too much paper is fed into the paper inlet, it can easily cause paper jams, damage to the blades, or reduced shredding efficiency.

[0003] To address the aforementioned problems, this utility model document proposes a paper feeding and limiting structure for a paper shredder and a paper shredder in general. Utility Model Content

[0004] This utility model provides a paper feeding and limiting structure for a paper shredder and a paper shredder in general, which solves the problems of paper jams, damage to blades, or reduced shredding efficiency caused by excessive paper feeding when a large amount of paper is fed into the paper feed inlet during the use of the existing paper shredder.

[0005] This utility model provides the following technical solution:

[0006] A paper feed limiting structure for a paper shredder includes:

[0007] The box body has an open bottom and a through opening in the center of the top. Two symmetrically positioned limiting plates are placed vertically inside the through opening. An adjustment component for synchronously adjusting the distance between the two limiting plates is provided inside the box body.

[0008] In one possible design, the adjusting assembly includes a bidirectional threaded screw rotatably mounted on the inner wall of the housing via bearings at both ends. The bidirectional threaded screw is perpendicular to the through-hole. Two matching screw seats are symmetrically threaded onto the bidirectional threaded screw. A slider is fixedly mounted on one side of each screw seat to prevent it from rotating. The side wall of the housing has the same rectangular sliding hole for slidably connecting the two sliders. A guide rod parallel to the bidirectional threaded screw is fixedly mounted inside the housing. Two guide seats are slidably connected to the guide rod. The side wall of the limiting plate is fixed to the corresponding screw seat and guide seat by bolts.

[0009] In one possible design, one end of the bidirectional threaded screw passes through the outer wall of the box and is fixedly provided with a screw cap. A reinforcing nut is threaded onto the bidirectional threaded screw, and the reinforcing nut is located between the screw cap and the outer wall of the box.

[0010] In one possible design, the top of the limiting plate extends through the through-hole and is bolted to a horizontal plate that covers the gap between the outer wall of the limiting plate and the through-hole.

[0011] This utility model also provides a paper shredder, including the paper feeding and limiting structure of the paper shredder described in any one of the above descriptions, and also includes a paper shredder body. The four corners of the box are fixed to the top of the paper shredder body by bolts. The through-hole is aligned with the paper feeding port on the top of the paper shredder body. A collection box for collecting shredded paper is slidably arranged in the pull-out groove on one side of the paper shredder body. Universal wheels are fixedly installed at the four corners of the bottom of the paper shredder body.

[0012] In one possible design, the outer wall of the collection box is provided with a capacity window for easy observation of the shredded paper filling level, a transparent plate is embedded in the capacity window, and a handle is vertically fixed on the outer wall of the collection box.

[0013] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0014] The working principle and usage process of this technical solution are as follows:

[0015] During use, rotating the screw cap drives the bidirectional threaded screw to rotate. Since the screw seat is threadedly connected to the bidirectional threaded screw, and the sliding block and the rectangular sliding hole restrict the rotation of the screw seat, the two screw seats will move towards or away from each other along the bidirectional threaded screw. At the same time, the guide seat slides on the guide rod, which plays an auxiliary guiding role, thereby adjusting the distance between the two limit plates in sync to adapt to the paper stacking thickness requirements of the paper inlet on different shredder bodies. After adjustment, tighten the reinforcing nut to make it press tightly against the outer wall of the box to prevent the bidirectional threaded screw from loosening.

[0016] Next, the paper to be shredded is put into the through-hole at the top of the shredder. Due to the limitation of the limiting plate, the thickness of the paper entering is controlled within a suitable range to avoid too much paper entering. After the paper enters the shredder body through the through-hole and the paper inlet at the top of the shredder body, the matching motor provides power to rotate the transmission gear, and then transmits the power to the shaft of the cutter. The teeth on the two cutters mesh with each other, thereby breaking the paper document into shreds. The shreds fall into the collection box located in the pull-out slot on one side of the shredder body. The operator can observe the shred filling degree through the capacity window on the outer wall of the collection box. When there is a lot of shreds, hold the handle to pull out the collection box, empty the shreds, and then put the collection box back into the pull-out slot.

[0017] This utility model has the following beneficial effects:

[0018] This invention uses two limiting plates to control the thickness of the paper entering the shredder, preventing excessive paper from entering the paper inlet. This effectively prevents problems such as paper jams, blade damage, or reduced shredding efficiency caused by excessive paper feeding, reducing unnecessary maintenance costs and extending the service life of the shredder. Furthermore, the adjustment component can flexibly adjust the distance between the two limiting plates according to the paper thickness requirements of the paper inlet on different shredder bodies, making the paper feeding limiting structure of this shredder more widely applicable.

[0019] In this invention, a reinforcing nut is provided on the bidirectional threaded screw. After tightening, it presses tightly against the outer wall of the box, which can prevent the bidirectional threaded screw from loosening, ensuring the stability and reliability of the adjustment component and ensuring that the spacing of the limit plate will not change easily after adjustment.

[0020] In this invention, a capacity window is provided on the outer wall of the collection box, allowing operators to observe the shredded paper filling level at any time and clean the collection box in a timely manner; a handle is provided for easy removal and replacement of the collection box; casters are installed at the four corners of the bottom of the shredder body, making it easy to move the shredder and improving the flexibility and convenience of the equipment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the paper shredder body provided in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the separation structure between the box body and the shredder body provided in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the box provided in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the adjustment component provided in an embodiment of the present utility model.

[0025] Reference numerals: 1. Box body; 2. Limiting plate; 3. Two-way threaded screw; 4. Screw seat; 5. Guide rod; 6. Guide seat; 7. Slider; 8. Rectangular sliding hole; 9. Tightening cap; 10. Reinforcing nut; 11. Horizontal plate; 12. Shredder body; 13. Paper inlet; 14. Pull-out slot; 15. Collection box; 16. Capacity window; 17. Handle; 18. Casters; 19. Through port. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0029] Example 1

[0030] Please refer to Figure 1-4 A paper feed limiting structure for a paper shredder, comprising:

[0031] Box 1 has an open bottom for connection and installation with the shredder body 12. A through-hole 19 is provided in the center of the top of box 1 for inserting paper to be shredded. Two limiting plates 2 are symmetrically placed vertically inside the through-hole 19. The function of the limiting plates 2 is to control the thickness of the paper entering the shredder and prevent too much paper from entering the paper inlet 13.

[0032] To achieve synchronous adjustment of the distance between the two limiting plates 2, an adjustment assembly is provided inside the box 1. The adjustment assembly includes a bidirectional threaded screw 3, which is rotatably mounted on the inner wall of the box 1 at both ends via bearings. The bidirectional threaded screw 3 is perpendicular to the through opening 19. Two matching screw seats 4 are symmetrically threaded on the bidirectional threaded screw 3. A slider 7 is fixedly provided on one side of the screw seat 4 to prevent its rotation. The side wall of the box 1 is provided with the same rectangular sliding hole 8 for slidingly connecting the two sliders 7. Through the cooperation of the slider 7 and the rectangular sliding hole 8, the rotation of the screw seat 4 is restricted, so that when the bidirectional threaded screw 3 rotates, the two screw seats 4 will move towards or away from each other along the bidirectional threaded screw 3.

[0033] To enhance the stability and accuracy of the adjustment of the limiting plate 2, a guide rod 5 parallel to the bidirectional threaded screw 3 is fixedly installed inside the box 1. Two guide seats 6 are slidably connected on the guide rod 5. The side wall of the limiting plate 2 is fixed to the corresponding screw seat 4 and guide seat 6 by bolts. In this way, when the screw seat 4 moves, it will drive the limiting plate 2 and guide seat 6 to move together, thereby realizing the adjustment of the distance between the limiting plates 2.

[0034] To facilitate the operator's rotation of the bidirectional threaded screw 3, one end of the bidirectional threaded screw 3 passes through the outer wall of the box 1 and is fixedly provided with a screw cap 9. At the same time, to prevent the bidirectional threaded screw 3 from loosening after adjustment, a reinforcing nut 10 is also threadedly connected to the bidirectional threaded screw 3. The reinforcing nut 10 is located between the screw cap 9 and the outer wall of the box 1. After the adjustment is completed, tighten the reinforcing nut 10 so that it is tightly against the outer wall of the box 1, which can prevent the bidirectional threaded screw 3 from loosening.

[0035] In addition, in order to cover the gap formed by the outer wall of the limiting plate 2 and the through hole 19 and prevent the paper from getting stuck in the gap when it is inserted, the top of the limiting plate 2 extends through to the outside of the through hole 19 and is fixed with a horizontal plate 11 by bolts.

[0036] This utility model also provides a paper shredder, which, in addition to the paper feeding and limiting structure of the paper shredder mentioned above, also includes a paper shredder body 12. The electric motor inside the body provides power to rotate the transmission gear, and then transmits the power to the shaft of the cutter. The cutting teeth on the two cutters mesh with each other, thereby breaking down paper documents into shreds. The four corners of the box body 1 are fixed to the top of the paper shredder body 12 by bolts. The through-hole 19 is aligned with the paper inlet 13 at the top of the paper shredder body 12 so that the paper can smoothly enter the interior of the paper shredder body 12.

[0037] A collection box 15 for collecting shredded paper is slidably installed in the pull-out groove 14 on one side of the shredder body 12. A capacity window 16 is provided on the outer wall of the collection box 15 to facilitate observation of the shredded paper filling degree. A transparent plate is embedded in the capacity window 16, and the operator can observe the shredded paper filling degree at any time through the transparent plate. At the same time, a handle 17 is also vertically fixed on the outer wall of the collection box 15, so that the operator can hold the handle 17 to pull out the collection box 15 and put it back into the pull-out groove 14.

[0038] To facilitate moving the shredder, casters 18 are fixedly installed at the four corners of the bottom of the shredder body 12, so that the operator can easily move the shredder to different positions as needed.

[0039] In actual use, the operator first adjusts the distance between the two limiting plates 2 by rotating the screw cap 9 to drive the bidirectional threaded screw 3 to rotate, according to the required paper stacking thickness at the paper inlet 13 on the shredder body 12. After adjustment, the operator tightens the reinforcing nut 10 to prevent the bidirectional threaded screw 3 from loosening. Then, the paper to be shredded is put into the through-hole 19 at the top of the box 1. Due to the limitation of the limiting plate 2, the stacking thickness of the paper is controlled within a suitable range. The paper passes through the through-hole 19 and the paper inlet 13 at the top of the shredder body 12. After the inlet 13 enters the shredder body 12, the electric motor of the body provides power to rotate the transmission gear, which in turn transmits the power to the shaft of the cutter. The teeth on the two cutters mesh with each other, thereby breaking the paper document into shreds. The shreds fall into the collection box 15 located in the pull-out slot 14 on one side of the shredder body 12. The operator can observe the shred filling level through the capacity window 16 on the outer wall of the collection box 15. When there are many shreds, the operator can hold the handle 17 to pull out the collection box 15, empty the shreds, and then put the collection box 15 back into the pull-out slot 14. It is convenient to use.

[0040] This application can be used in paper shredders, or in other fields applicable to this application.

[0041] However, as is well known to those skilled in the art, the working principle and wiring method of the shredder body 12 are commonplace and are all conventional means or common knowledge, so they will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0042] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0043] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A paper feeding and limiting structure for a paper shredder, characterized in that, include: The box body (1) has an open bottom and a through opening (19) at the center of the top. Two limiting plates (2) are symmetrically placed vertically inside the through opening (19). An adjustment component for synchronously adjusting the distance between the two limiting plates (2) is provided inside the box body (1).

2. The paper feeding and limiting structure for a paper shredder according to claim 1, characterized in that, The adjustment assembly includes a bidirectional threaded screw (3) that is rotatably mounted on the inner wall of the box (1) at both ends via bearings. The bidirectional threaded screw (3) is perpendicular to the through-hole (19). The bidirectional threaded screw (3) is symmetrically threaded with two matching screw seats (4). A slider (7) is fixedly provided on one side of the screw seat (4) to prevent it from rotating. The side wall of the box (1) is provided with the same rectangular sliding hole (8) for slidingly connecting the two sliders (7). A guide rod (5) parallel to the bidirectional threaded screw (3) is fixedly provided inside the box (1). Two guide seats (6) are slidably connected on the guide rod (5). The side wall of the limiting plate (2) is fixed to the corresponding screw seat (4) and guide seat (6) by bolts.

3. The paper feeding and limiting structure for a paper shredder according to claim 2, characterized in that, One end of the bidirectional threaded screw (3) penetrates the outer wall of the box body (1) and is fixedly provided with a screw cap (9). A reinforcing nut (10) is threaded onto the bidirectional threaded screw (3), and the reinforcing nut (10) is located between the screw cap (9) and the outer wall of the box body (1).

4. The paper feeding and limiting structure for a paper shredder according to claim 1, characterized in that, The top of the limiting plate (2) extends through the through-hole (19) and is fixed with bolts to a horizontal plate (11) for covering the gap between the outer wall of the limiting plate (2) and the through-hole (19).

5. A paper shredder, characterized in that, The shredder includes the paper feeding and limiting structure according to any one of claims 1 to 4, and also includes a shredder body (12). The four corners of the box body (1) are fixed to the top of the shredder body (12) by bolts. The through-hole (19) is aligned with the paper inlet (13) at the top of the shredder body (12). A collection box (15) for collecting shredded paper is slidably arranged in the pull-out groove (14) on one side of the shredder body (12). Universal wheels (18) are fixedly installed at the four corners of the bottom of the shredder body (12).

6. A paper shredder according to claim 5, characterized in that, The outer wall of the collection box (15) is provided with a capacity window (16) for easy observation of the shredded paper filling degree. A transparent plate is embedded in the capacity window (16), and a handle (17) is vertically fixed on the outer wall of the collection box (15).

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