Paper shredder

Abstract

The utility model provides a paper shredder and belongs to the technical field of office supplies. The problem that the paper separation effect cannot be effectively guaranteed for a long time is solved. The paper shredder comprises a machine shell, a paper guiding platform arranged in the machine shell, a paper dividing piece connected to the upper side of the rear end of the paper guiding platform and a paper rubbing wheel located above the paper dividing piece, the paper dividing piece comprises a paper dividing body and a friction body, the paper dividing body comprises an upper connecting body and a lower connecting body, and the upper connecting body and the lower connecting body are fixed through a fastener. The friction body is clamped and fixed between the upper connecting body and the lower connecting body, the upper connecting body is provided with a receding opening, and the friction body partially penetrates through the receding opening and abuts against the bottom of the pickup roller. The device has the advantages of effectively guaranteeing the paper separation effect for a long time and the like.

Description

Technical Field

[0001] This utility model belongs to the field of office supplies technology and relates to a paper shredder. Background Technology

[0002] Paper shredders are a common office supply, and with continuous technological advancements, they have evolved from manual shredding to automatic shredding. For example, an automatic paper feed shredder with patent application number 201621369745.6 includes a shredding mechanism, a paper separating mechanism, a paper feed roller, and a shredding channel leading to the shredding mechanism. The paper feed roller is mounted on the upper part of the shredding channel and can rotate to feed paper from the paper separating mechanism into the shredding mechanism. The paper separating mechanism includes a separating spring, a spring pressure plate, a separating head, and a friction pad. The upper and lower ends of the separating spring are connected to the separating head and the spring pressure plate, respectively. The friction pad is embedded in the top of the separating head, and the upward reset pressure of the separating spring adjusts the friction between the friction pad and the paper. This friction is greater than the friction between the papers in a stacked state. When two sheets of paper are placed into the shredding channel simultaneously and enter between the paper feed roller and the friction pad, the friction pad will move down a certain distance and maintain a certain upward pressure under the reset action of the spring plate. Since the friction between the friction pad and the paper is greater than the friction between the sheets of paper, the top sheet of paper will be conveyed into the shredding mechanism first by the paper feed roller. Then, the spring plate resets upward so that the bottom sheet of paper contacts the paper feed roller and maintains the friction between the friction pad and the paper. Thus, the paper feed roller can feed the paper into the shredding mechanism. Therefore, it is not necessary to manually place each sheet into the shredding channel one by one.

[0003] However, the above-mentioned automatic paper feed shredder also has its shortcomings: the friction pad is continuously subjected to the force applied by the paper during the paper feeding process, and the friction pad is only embedded in the top of the paper separating head. After long-term use, the friction pad is prone to detaching from the top of the paper separating head, causing the paper separating function to fail. This will cause a large amount of paper to be fed into the shredding mechanism at one time, resulting in paper jams or even machine overload. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a paper shredder that solves the problem of not being able to guarantee effective paper shredding over a long period of time.

[0005] The purpose of this utility model can be achieved through the following technical solutions:

[0006] A paper shredder includes a housing, a paper guide platform disposed within the housing, a paper separating component connected to the upper rear end of the paper guide platform, and a paper feeding roller located above the paper separating component. The paper separating component includes a paper separating body and a friction body. The paper separating body includes an upper connecting body and a lower connecting body, which are fixed together by fasteners. The friction body is clamped and fixed between the upper connecting body and the lower connecting body. The upper connecting body has a clearance opening, and a portion of the friction body passes through the clearance opening and abuts against the bottom of the paper feeding roller.

[0007] During assembly, the friction element is clamped between the upper and lower connecting bodies, and then the upper and lower connecting bodies are fixed together with fasteners. This clamps the friction element securely between the upper and lower connecting bodies, with a portion of the friction element protruding from the paper separator through a clearance opening to contact the paper. This clamping method ensures a very firm connection between the friction element and the paper separator, preventing it from detaching even under continuous forward force during paper feeding, thus guaranteeing long-term effectiveness in paper separation.

[0008] In the aforementioned paper shredder, the bottom of the upper connecting body has a hollow groove, the lower connecting body is located in the hollow groove, the relief opening is connected to the hollow groove, the upper side of the lower connecting body has a boss corresponding to the position of the relief opening, the top of the boss is located in the relief opening, and the friction body is in the shape of a sheet and is pressed against the boss by the inner wall of the relief opening.

[0009] During actual assembly, the friction element is placed against the boss, and then the upper and lower connecting bodies are brought together with their clearance openings facing the boss. During this process, the inner wall of the clearance opening engages with the boss, compressing the friction element. Finally, fasteners are used to secure the upper and lower connecting bodies, thus clamping and fixing the friction element between them. This design ensures a very firm connection between the friction element and the paper separating body, preventing detachment after prolonged use and further guaranteeing the long-term effectiveness of the paper separating process.

[0010] In the aforementioned paper shredder, the front and rear side walls of the boss are both inclined in opposite directions. The distance between the front and rear side walls of the boss gradually increases from top to bottom. The front inner wall of the clearance opening is parallel to the front side wall of the boss. The rear groove wall of the perforated groove is parallel to the rear side wall of the boss, and the rear inner wall of the clearance opening is part of the rear groove wall of the perforated groove.

[0011] Because the front and rear side walls of the boss are both inclined in opposite directions, the distance between the front and rear side walls of the boss gradually increases from top to bottom. The front inner wall of the relief opening is parallel to the front side wall of the boss, and the rear groove wall of the hollowed-out groove is parallel to the rear side wall of the boss. The rear inner wall of the relief opening is part of the rear groove wall of the hollowed-out groove. Thus, the size of the friction body formed in the end also gradually increases from top to bottom, which can prevent the friction body from sliding out of the relief opening.

[0012] In the aforementioned paper shredder, the front side of the friction body has a horizontal portion that is clamped between the bottom wall of the perforated groove and the upper side wall of the lower connecting body.

[0013] The formation of the horizontal section creates a noticeable bend in the friction body, making it less likely for the friction body to slide out of the clearance opening.

[0014] In one of the paper shredders described above, as another technical solution, the bottom of the upper connecting body has a hollow groove, the lower connecting body is located in the hollow groove, the clearance opening is connected to the hollow groove, the friction body is block-shaped, the front side wall and the rear side wall of the friction body are both inclined and the inclination directions are opposite, the front inner wall of the clearance opening is in contact with the front side wall of the friction body, and the rear inner wall of the clearance opening is in contact with the rear side wall of the friction body.

[0015] During assembly, the block-shaped friction body is placed against the upper side of the lower connecting body, and then the upper connecting body and the lower connecting body are fixedly connected together. The upper end of the friction body extends out from the relief opening, so that the friction body is clamped and fixed between the upper connecting body and the lower connecting body.

[0016] In the aforementioned paper shredder, the upper rear end of the paper guide platform has a downward-facing recessed groove, the paper separator is located inside the groove and its upper end extends out of the groove, and an action spring is provided between the paper separator and the bottom wall of the groove.

[0017] In the aforementioned paper shredder, the bottom wall of the groove is provided with a through hole, the upper connecting body has an integrally fixed mounting post to the bottom wall of the hollow groove, the mounting post passes through the lower connecting body and out of the through hole, an action spring is sleeved on the outside of the mounting post, the lower end of the mounting post is connected to a limiting member, the limiting member protrudes from the outer side wall of the mounting post, and there is a gap between the limiting member and the surface where the lower end of the through hole is located.

[0018] The upper connecting body has an integrally fixed mounting post to the bottom wall of the hollow groove and a through hole is provided in the bottom wall of the groove. After the mounting post passes through the lower connecting body and out of the through hole, a limiting component is directly connected to the lower end of the mounting post. In this way, the limiting component can be used to ensure that the paper shredder will not fall out of the groove during the assembly of the paper feeding roller. In other words, this paper shredder not only ensures the long-term effectiveness of paper shredding, but also improves the convenience of assembly.

[0019] In the aforementioned paper shredder, there is a first swing gap between the outer wall of the mounting column and the hole wall of the through hole, a second swing gap between the front wall of the upper connecting body and the front groove wall of the groove, a first notch between the bottom wall and the rear side of the upper connecting body, a second notch between the rear end face and the upper side of the paper guiding platform, the second notch communicating with the groove, and the rear part of the upper connecting body located within the second notch.

[0020] As the paper is fed forward by the paper guide platform, the paper separator is subjected to a forward force. By setting a first swing gap between the outer wall of the mounting post and the wall of the through hole, and a second swing gap between the front wall of the upper connector and the front wall of the groove, the paper separator can abut against the front wall of the groove when it swings forward under force, thus avoiding hard compression between the mounting post and the wall of the through hole and gradual deformation.

[0021] In the aforementioned paper shredder, the bottom of the mounting column is provided with a connecting hole, and the limiting component is a screw. The screw shank is threaded into the connecting hole, and the outer diameter of the screw head is larger than the diameter of the through hole.

[0022] After inserting the paper divider into the groove by passing the mounting post through the through hole, thread the screw shank into the connecting hole of the mounting post. The outer diameter of the screw head is larger than the diameter of the through hole, which helps to prevent the paper divider from falling out of the groove during assembly.

[0023] In the aforementioned paper shredder, the limiting component is a shaft retaining ring. An annular groove is provided on the outer side of the lower end of the mounting column, and the inner edge of the shaft retaining ring is engaged in the annular groove. The outer diameter of the shaft retaining ring is larger than the diameter of the through hole.

[0024] After inserting the paper separator into the groove by passing the mounting post through the through hole, the inner edge of the shaft retaining ring is engaged in the annular groove on the outer side of the lower end of the mounting post. Since the outer diameter of the shaft retaining ring is larger than the diameter of the through hole, this helps to prevent the paper separator from detaching from the groove during assembly.

[0025] Compared with existing technologies, this paper shredder has the following advantages:

[0026] 1. By setting the paper separating body to include an upper connecting body and a lower connecting body, and clamping and fixing the friction body between the upper connecting body and the lower connecting body, the friction body can be firmly connected to the paper separating body. In this way, even if the friction body is constantly subjected to a forward force during continuous paper feeding, it will not detach from the paper separating body, thus ensuring the long-term effectiveness of the paper separating effect.

[0027] 2. The upper connecting body has an integrally fixed mounting column to the bottom wall of the hollow groove and a through hole is provided in the bottom wall of the groove. After the mounting column passes through the lower connecting body and out of the through hole, a limiting component is directly connected to the lower end of the mounting column. In this way, the limiting component can be used to ensure that the paper shredder will not fall out of the groove during the assembly of the paper feeding roller. In other words, this paper shredder not only ensures the long-term effectiveness of paper shredding, but also improves the convenience of assembly. Attached Figure Description

[0028] Figure 1 This is a 3D schematic diagram of the paper shredder.

[0029] Figure 2 This is a cross-sectional view of the paper shredder.

[0030] Figure 3 yes Figure 2 A magnified view of the section where the paper is split in the middle.

[0031] Figure 4 yes Figure 2 Sectional view along the AA direction.

[0032] Figure 5 yes Figure 4 A magnified view of the section where the paper is split in the middle.

[0033] Figure 6 This is an exploded view of the paper-cutting components.

[0034] Figure 7 This is a schematic diagram of the paper-cutting components from another angle.

[0035] In the diagram, 1. Housing; 1a. Manual shredder paper inlet; 1b. Automatic shredder paper inlet; 2. Paper guide platform; 2a. Groove; 2b. Through hole; 2c. Second notch; 3. Paper feed roller; 4. Paper support plate; 5. Support spring; 6. Knife assembly; 6a. Outer shell; 6b. Knife shaft; 6c. Blade; 7. Paper separating component; 7a. Paper separating body; 7a1. Upper connecting body; 7a11. Clearance opening; 7a12. Hollowed-out groove; 7a13. Mounting post; 7a14. First notch; 7a15. Connecting hole; 7a2. Lower connecting body; 7a21. Boss; 7b. Friction body; 7b1. Horizontal part; 8. Acting spring; 9. Limiting component. Detailed Implementation

[0036] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0037] Example 1

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a paper shredder includes a housing 1 and a paper guide platform 2, a paper feed roller 3, a paper support plate 4, and a paper separator 7, all disposed within the housing 1. The paper guide platform 2 is fixed inside the housing 1. The paper feed roller 3 is connected to the housing 1 via a rotating shaft. The paper separator 7 is connected to the upper rear end of the paper guide platform 2, with the paper feed roller 3 positioned above it. The rear end of the paper support plate 4 is hinged to the housing 1, and the front end of the paper support plate 4 is located below and behind the paper feed roller 3. The paper guide platform 2 is located in front of the paper support plate 4. A support spring 5 is also provided inside the housing 1, with its upper end abutting against the bottom of the front end of the paper support plate 4. In this embodiment, the top of the housing 1 has a manual shredder feed port 1a and an automatic shredder feed port 1b. The manual shredder feed port 1a is located in front of the automatic shredder feed port 1b, and the rear end of the paper tray 4 is located inside the automatic shredder feed port 1b. The housing 1 also has a blade assembly 6, which includes a housing 6a, a blade shaft 6b rotatably disposed within the housing 6a, and blades 6c fixedly connected to the blade shaft 6b. The housing 6a has a paper inlet, and the rear ends of the manual shredder feed port 1a and the paper guide platform 2 are both connected to the paper inlet of the blade assembly 6. The housing 1 also has a drive motor, whose output shaft drives both the blade shaft 6b and the rotating shaft to rotate simultaneously via a gear mechanism.

[0039] Furthermore, the upper rear end of the paper guide platform 2 has a recessed groove 2a. The paper separating component 7 includes a paper separating body 7a and a friction body 7b fixed to the paper separating body 7a. The paper separating body 7a is located inside the groove 2a and its upper end extends out of the groove 2a. An action spring 8 is abutting between the paper separating body 7a and the bottom wall of the groove 2a. The friction body 7b is a rubber component. The paper separating body 7a includes an upper connecting body 7a1 and a lower connecting body 7a2. The upper connecting body 7a1 and the lower connecting body 7a2 are fixed together by fasteners. The friction body 7b is clamped and fixed between the upper connecting body 7a1 and the lower connecting body 7a2. The upper connecting body 7a1 has a relief opening 7a11. Part of the friction body 7b passes through the relief opening 7a11 and abuts against the bottom of the paper feed roller 3.

[0040] When shredding a single sheet or several sheets of paper, the user directly places the paper into the housing 1 through the manual shredder inlet 1a and into the blade assembly 6 for shredding. When shredding a large quantity of paper, the user stacks the paper into a pile and places it onto the tray 4 through the automatic shredder inlet 1b, pushing the pile forward until the front edge of the paper contacts the separating body 7a. As the paper feed roller 3 rotates, friction is generated between the roller 3 and the top sheet of paper, propelling it forward. Theoretically, as the top sheet is conveyed forward, some paper should be carried forward along with it. However, when the paper passes between the paper feed roller 3 and the separating body 7b, the friction between the friction body 7b and the paper is greater than the friction between the sheets, ensuring that only the top sheet is conveyed forward and ultimately enters the blade assembly 6 for shredding.

[0041] The paper-sliding body 7a of the paper-sliding component 7 is located in a recessed groove 2a on the upper rear side of the paper guide platform 2. A spring 8 is installed between the paper-sliding body 7a and the bottom wall of the groove 2a. The spring force of the spring 8 acts upward on the paper-sliding body 7a, ensuring that the friction body 7b, which protrudes from the clearance opening 7a11, always remains in contact with the bottom of the paper feeding roller 3. This effectively controls the gap between the paper-sliding component 7 and the paper feeding roller 3, eliminating the possibility of insufficient fit between the paper-sliding component 7 and the paper feeding roller 3 after installation due to processing errors during production. This ensures that the paper shredder maintains a stable paper-sliding effect during long-term use. In particular, during the paper feeding process, it is the friction body 7b that comes into contact with the paper. The friction body 7b is a rubber component, which is more wear-resistant and provides stable friction during long-term use. More importantly, the friction body 7b is installed and fixed by clamping between the upper connecting body 7a1 and the lower connecting body 7a2, so that the friction body 7b can be firmly connected to the paper separating body 7a. In this way, even if the friction body 7b is constantly subjected to a forward force during continuous paper feeding, it will not detach from the paper separating body 7a, thus ensuring the long-term effectiveness of the paper separating effect.

[0042] Specifically, the bottom of the upper connecting body 7a1 has a hollow groove 7a12, and the lower connecting body 7a2 is located inside the hollow groove 7a12. The clearance opening 7a11 communicates with the hollow groove 7a12. The upper side of the lower connecting body 7a2 has a boss 7a21 corresponding to the position of the clearance opening 7a11. The top of the boss 7a21 is located inside the clearance opening 7a11. The friction body 7b is sheet-shaped and is pressed against the boss 7a21 by the inner wall of the clearance opening 7a11. In actual assembly, the friction body 7b is pressed against the boss 7a21, and then the upper connecting body 7a1 and the lower connecting body 7a2 are joined together with the clearance opening 7a11 and the boss 7a21 facing each other. During the closing process, the inner wall of the clearance opening 7a11 engages with the boss 7a21 to compress the friction body 7b. Finally, fasteners are used to fix the upper connecting body 7a1 and the lower connecting body 7a2 together, thus clamping and fixing the friction body 7b between them. This design ensures that the friction body 7b is firmly connected to the paper separating body 7a, preventing it from detaching after prolonged use and further guaranteeing the long-term effectiveness of the paper separating process. The front and rear sidewalls of the boss 7a21 are both inclined in opposite directions, and the distance between the front and rear sidewalls of the boss 7a21 gradually increases from top to bottom. The front inner wall of the clearance opening 7a11 is parallel to the front sidewall of the boss 7a21, and the rear groove wall of the hollow groove 7a12 is parallel to the rear sidewall of the boss 7a21, with the rear inner wall of the clearance opening 7a11 being a part of the rear groove wall of the hollow groove 7a12. In this embodiment, the front side of the friction body 7b has a horizontal portion 7b1 that is clamped between the bottom wall of the hollow groove 7a12 and the upper sidewall of the lower connecting body 7a2.

[0043] Furthermore, such as Figure 3 , Figure 5 , Figure 6 and Figure 7As shown, both the upper connecting body 7a1 and the lower connecting body 7a2 are elongated along the centerline of the paper feed roller 3. The bottom wall of the groove 2a has a through hole 2b. The upper connecting body 7a1 has a mounting post 7a13 integrally fixed to the bottom wall of the hollow groove 7a12. The mounting post 7a13 passes through the lower connecting body 7a2 and extends out of the through hole 2b. The spring 8 is sleeved on the outside of the mounting post 7a13. The lower end of the mounting post 7a13 is connected to a limiting member 9, which protrudes from the outer wall of the mounting post 7a13. There is a gap between the limiting member 9 and the surface where the lower end of the through hole 2b is located. In practice, there are two mounting posts 7a13, located at both ends of the upper connecting body 7a1 along the centerline of the paper feed roller 3. The bottom of the mounting post 7a13 has a connecting hole 7a15. The limiting member 9 is a screw, with the screw shank threaded into the connecting hole 7a15. The outer diameter of the screw head is larger than the diameter of the through hole 2b. After the paper separator 7a is placed into the groove 2a through the through hole 2b via the mounting post 7a13, the screw shank is threaded into the connecting hole 7a15 of the mounting post 7a13. The outer diameter of the screw head is larger than the diameter of the through hole 2b, which helps to prevent the paper separator 7a from detaching from the groove 2a during assembly. There is a first swing gap between the outer wall of the mounting post 7a13 and the wall of the through hole 2b, and a second swing gap between the front wall of the upper connecting body 7a1 and the front groove wall of the groove 2a. There is a first notch 7a14 between the bottom wall and the rear side of the upper connecting body 7a1, and a second notch 2c between the rear end face and the upper side face of the paper guide platform 2. The second notch 2c communicates with the groove 2a, and the rear part of the upper connecting body 7a1 is located within the second notch 2c. As the paper is fed forward via the paper guide platform 2, the paper separator 7a is subjected to a forward force. By setting a first swing gap between the outer wall of the mounting post 7a13 and the wall of the through hole 2b, and a second swing gap between the front wall of the upper connecting body 7a1 and the front groove wall of the groove 2a, the paper separator 7a can abut against the front groove wall of the groove 2a when it swings forward under force, thereby preventing hard compression and gradual deformation between the mounting post 7a13 and the wall of the through hole 2b.

[0044] Example 2

[0045] This embodiment is basically the same as the first embodiment in terms of structure and principle. The difference is that in this embodiment, the friction body 7b is block-shaped. The front sidewall and the rear sidewall of the friction body 7b are both inclined and the inclination directions are opposite. The front inner wall of the clearance opening 7a11 is in contact with the front sidewall of the friction body 7b, and the rear inner wall of the clearance opening 7a11 is in contact with the rear sidewall of the friction body 7b.

[0046] Example 3

[0047] The structure and principle of this embodiment are basically the same as those of Embodiment 1. The difference is that in this embodiment, the limiting member 9 is a shaft retaining ring, and the lower end of the mounting column 7a13 is provided with an annular groove. The inner edge of the shaft retaining ring is stuck in the annular groove, and the outer diameter of the shaft retaining ring is larger than the diameter of the through hole 2b.

[0048] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A paper shredder, comprising a housing (1), a paper guide platform (2) disposed within the housing (1), a paper separating component (7) connected to the upper rear end of the paper guide platform (2), and a paper feeding roller (3) located above the paper separating component (7), wherein the paper separating component (7) comprises a paper separating body (7a) and a friction body (7b), characterized in that, The paper separating body (7a) includes an upper connecting body (7a1) and a lower connecting body (7a2), which are fixed together by fasteners. A friction body (7b) is clamped and fixed between the upper connecting body (7a1) and the lower connecting body (7a2). The upper connecting body (7a1) has a relief opening (7a11), and part of the friction body (7b) passes through the relief opening (7a11) and abuts against the bottom of the paper feeding roller (3).

2. A paper shredder according to claim 1, characterized in that, The upper connecting body (7a1) has a hollow groove (7a12) at its bottom, and the lower connecting body (7a2) is located in the hollow groove (7a12). The relief opening (7a11) is connected to the hollow groove (7a12). The upper side of the lower connecting body (7a2) has a boss (7a21) corresponding to the position of the relief opening (7a11). The top of the boss (7a21) is located in the relief opening (7a11). The friction body (7b) is in the shape of a sheet and is pressed against the boss (7a21) by the inner wall of the relief opening (7a11).

3. A paper shredder according to claim 2, characterized in that, The front and rear side walls of the boss (7a21) are both inclined and in opposite directions. The distance between the front and rear side walls of the boss (7a21) gradually increases from top to bottom. The front inner wall of the clearance opening (7a11) is parallel to the front side wall of the boss (7a21). The rear groove wall of the hollow groove (7a12) is parallel to the rear side wall of the boss (7a21), and the rear inner wall of the clearance opening (7a11) is part of the rear groove wall of the hollow groove (7a12).

4. A paper shredder according to claim 3, characterized in that, The front side of the friction body (7b) has a horizontal portion (7b1) that is clamped between the bottom wall of the hollow groove (7a12) and the upper side wall of the lower connecting body (7a2).

5. A paper shredder according to claim 1, characterized in that, The upper connecting body (7a1) has a hollow groove (7a12) at its bottom, and the lower connecting body (7a2) is located in the hollow groove (7a12). The clearance opening (7a11) is connected to the hollow groove (7a12). The friction body (7b) is block-shaped. The front and rear side walls of the friction body (7b) are both inclined and their inclination directions are opposite. The front inner wall of the clearance opening (7a11) is in contact with the front side wall of the friction body (7b), and the rear inner wall of the clearance opening (7a11) is in contact with the rear side wall of the friction body (7b).

6. A paper shredder according to claim 2 or 5, characterized in that, The paper guide platform (2) has a downward recessed groove (2a) on the upper rear side. The paper separating body (7a) is located in the groove (2a) and its upper end extends out of the groove (2a). An action spring (8) is provided between the paper separating body (7a) and the bottom wall of the groove (2a).

7. A paper shredder according to claim 6, characterized in that, The groove (2a) has a through hole (2b) on its bottom wall. The upper connecting body (7a1) has a mounting post (7a13) integrally fixed to the bottom wall of the hollow groove (7a12). The mounting post (7a13) passes through the lower connecting body (7a2) and out of the through hole (2b). The spring (8) is sleeved on the mounting post (7a13). The lower end of the mounting post (7a13) is connected to a limiting member (9). The limiting member (9) protrudes from the outer side wall of the mounting post (7a13). There is a gap between the limiting member (9) and the surface where the lower end of the through hole (2b) is located.

8. A paper shredder according to claim 7, characterized in that, The outer side wall of the mounting post (7a13) has a first swing gap with the hole wall of the through hole (2b), the front side wall of the upper connecting body (7a1) has a second swing gap with the front side groove wall of the groove (2a), the bottom wall of the upper connecting body (7a1) is provided with a first notch (7a14) between the rear side and the rear side, the rear end face of the paper guide platform (2) is provided with a second notch (2c) between the upper side and the rear end face, the second notch (2c) communicates with the groove (2a), and the rear part of the upper connecting body (7a1) is located in the second notch (2c).

9. A paper shredder according to claim 7, characterized in that, The mounting post (7a13) has a connecting hole (7a15) at the bottom. The limiting member (9) is a screw. The screw shank is threaded into the connecting hole (7a15). The outer diameter of the screw head is larger than the diameter of the through hole (2b).

10. A paper shredder according to claim 7, characterized in that, The limiting member (9) is a shaft retaining ring. The lower end of the mounting post (7a13) is provided with an annular groove. The inner edge of the shaft retaining ring is stuck in the annular groove. The outer diameter of the shaft retaining ring is larger than the diameter of the through hole (2b).

Images