An office-type paper shredder

Abstract

This utility model relates to the field of paper shredder technology and discloses an office-type paper shredder blade, including a set of fixed blade holders, a set of drive shaft assemblies between the set of fixed blade holders, a blade assembly one sleeved on the surface of the front drive shaft assembly, and a blade assembly two sleeved on the surface of the rear drive shaft assembly. The drive shaft assembly includes a retaining bracket, and a set of retaining brackets are symmetrically engaged with the inside of the set of fixed blade holders. A rotating shaft is inserted between the retaining brackets. The present invention effectively drives the retaining block to compress the spring by pulling the slide rod inward until the retaining block is completely hidden inside the end of the rotating shaft, thereby facilitating the direct separation of the rotating shaft from the retaining bracket. Then, the threaded ring is screwed to separate it from the rotating shaft. At this time, there are no restrictive objects on both sides of the blade assembly one, which makes it easy to directly pull the blade assembly one away from the rotating shaft. Other parts can be disassembled and replaced without disassembling the fixed blade holders, improving disassembly efficiency and reducing disassembly time.

Description

Technical Field

[0001] This utility model belongs to the field of paper shredder technology, specifically an office-type paper shredder blade. Background Technology

[0002] Office shredder blades are the core component of a paper shredder, directly determining the shredding effect, efficiency, and durability of the equipment. They are also a key device for ensuring office information security. Office shredder blades are not single blades, but rather a precision structure composed of a blade assembly, a fixed blade holder, and a drive shaft.

[0003] The existing office shredders often require separating the blade holder from the shredder frame, then separating the blade holder from the drive shaft, and finally removing the blade assembly from the drive shaft surface during maintenance and replacement. This process is cumbersome and time-consuming. To address this, we propose an office shredder. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model provides an office shredder, which effectively solves the problem that the maintenance and replacement of existing office shredders often requires separating the blade holder from the shredder frame, then separating the blade holder from the drive shaft, and finally removing the blade assembly from the drive shaft surface, which is a cumbersome and time-consuming process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an office shredder, comprising a set of fixed blade holders, a set of drive shaft assemblies between the set of fixed blade holders, a blade assembly one sleeved on the surface of the front drive shaft assembly, a blade assembly two sleeved on the surface of the rear drive shaft assembly, the drive shaft assembly including a retaining bracket, a set of retaining brackets symmetrically engaged with the inside of the set of fixed blade holders, a rotating shaft inserted between the set of retaining brackets, three guide protrusions uniformly fixed in an annular shape on the surface of the rotating shaft, a set of threaded rings symmetrically sleeved on the surface of the rotating shaft, a set of retaining blocks symmetrically engaged with the inner sides of both ends of the rotating shaft, a spring connected to one side of the retaining block, a set of sliding rods symmetrically fixed on the upper and lower surfaces of the retaining block, and a sliding groove fitted to the outer side of the sliding rod.

[0006] Preferably, the rotating shaft and the threaded ring are connected by a thread, and the side of the guide convex strip is in contact with the side of the threaded ring.

[0007] Preferably, the cross-section of the card block is a regular quadrilateral with a rounded transition at the vertex, the card shaft frame has a card groove inside that matches the end of the card block, and the card block forms an elastic structure with a spring and a rotating shaft.

[0008] Preferably, the locking block forms a locking and sliding structure through a sliding rod, a sliding groove, and a rotating shaft, with the sliding groove and the rotating shaft being integrally formed.

[0009] Preferably, the tool assembly includes a cylinder frame, which is sleeved on the surface of the rotating shaft. Three guide grooves are evenly and uniformly opened in an annular shape inside the cylinder frame, and a plurality of blades are evenly and fixedly sleeved on the outside of the cylinder frame.

[0010] Preferably, the guide groove and the guide protrusion are matched in shape and structure, and the outer diameter of the cylinder frame is the same as the outer diameter of the threaded ring.

[0011] Preferably, the difference between the first tool assembly and the second tool assembly lies only in the arrangement of the blades, with the blades in the first and second tool assemblies arranged alternately.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. By pulling the slide bar inward, the clamping block is effectively driven to compress the spring until the entire clamping block is concealed inside the end of the rotating shaft, thus facilitating the direct separation of the rotating shaft from the clamping bracket. Then, the threaded ring is screwed to separate it from the rotating shaft. At this time, there are no restrictions on both sides of the tool assembly, making it easy for the tool assembly to be directly pulled away from the rotating shaft. Other parts can be disassembled and replaced without disassembling the fixed tool holder, improving disassembly efficiency and reducing disassembly time.

[0014] 2. The cylinder frame can be quickly fixed to the outside of the rotating shaft by the cooperation between the guide groove and the guide convex strip, which improves the assembly efficiency. Then, the cylinder frame is effectively limited horizontally by the threaded ring. An external set of motors drives a set of drive shaft assemblies to rotate in the opposite direction. After the office paper enters the gap between the blades of the first and second blade assemblies, it is bitten and cut, thus breaking the paper. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0016] In the attached diagram:

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a partial disassembled structural diagram of the drive shaft assembly of this utility model;

[0019] Figure 3 This is a schematic diagram of the disassembled structure of the drive shaft assembly and the tool assembly of this utility model;

[0020] Figure 4 This is a partial cross-sectional structural diagram of the present invention.

[0021] In the diagram: 1. Fixed tool post; 2. Drive shaft assembly; 201. Shaft retainer; 202. Rotating shaft; 203. Guide rib; 204. Threaded ring; 205. Clamping block; 206. Spring; 207. Slide rod; 208. Slide groove; 3. Tool assembly one; 301. Cylinder holder; 302. Guide groove; 303. Insert; 4. Tool assembly two. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 An office shredder includes a set of fixed blade holders 1, a set of drive shaft assemblies 2 between the fixed blade holders 1, a blade assembly 3 on the surface of the front drive shaft assembly 2, and a blade assembly 4 on the surface of the rear drive shaft assembly 2. The drive shaft assembly 2 includes a retaining bracket 201, a set of retaining brackets 201 symmetrically engaged with the fixed blade holders 1, and a rotating shaft 202 inserted between the retaining brackets 201. Three guide protrusions 203 are uniformly fixed in a ring on the surface of the rotating shaft 202, and a set of threaded rings 204 are symmetrically fitted on the surface of the rotating shaft 202. The rotating shaft 202 and the threaded rings 204 are threadedly connected, and the sides of the guide protrusions 203 are in contact with the sides of the threaded rings 204. A set of retaining blocks 205 are symmetrically engaged with the inner sides of both ends of the rotating shaft 202, and a spring 206 is connected to one side of the retaining block 205. Furthermore, the cross-section of the retaining block 205 is a regular quadrilateral with a rounded vertex transition. A slot matching the end of the locking block 205 is provided. The locking block 205 forms an elastic structure with the rotating shaft 202 through the spring 206. A set of slide rods 207 are symmetrically fixed on the upper and lower surfaces of the locking block 205. A slide groove 208 is attached to the outside of the slide rod 207. Furthermore, the locking block 205 forms a locking and sliding structure with the rotating shaft 202 through the slide rods 207, the slide groove 208, and the slide groove 208. The slide groove 208 and the rotating shaft 202 are integrally formed. By pulling the slide rod 207 inward, the locking block 205 is effectively driven to compress the spring 206 until the locking block 205 is completely hidden inside the end of the rotating shaft 202, which facilitates the direct separation of the rotating shaft 202 from the locking shaft bracket 201. Then, the threaded ring 204 is screwed to separate it from the rotating shaft 202. At this time, there are no restrictions on both sides of the tool assembly 3, which makes it easy for the tool assembly 3 to be directly pulled away from the rotating shaft 202. Other parts can be disassembled and replaced without disassembling the fixed tool holder 1, which improves disassembly efficiency and reduces disassembly time.

[0024] The first tool assembly 3 includes a cylinder frame 301, which is sleeved on the surface of the rotating shaft 202. The cylinder frame 301 has three guide grooves 302 evenly arranged in a ring inside. The guide grooves 302 and guide protrusions 203 are matched in shape and structure. The outer diameter of the cylinder frame 301 is the same as the outer diameter of the threaded ring 204. Several blades 303 are evenly fixed on the outside of the cylinder frame 301. Furthermore, the only difference between the first tool assembly 3 and the second tool assembly 4 is the arrangement of the blades 303. The blades 303 in the second tool assembly 4 and the first tool assembly 3 are arranged alternately. The cylinder frame 301 can be quickly fixed to the outside of the rotating shaft 202 by the cooperation between the guide grooves 302 and the guide protrusions 203, which improves the assembly efficiency. Then, the threaded ring 204 effectively limits the cylinder frame 301 horizontally. An external motor drives a set of drive shaft assemblies 2 to rotate in the opposite direction. After the office paper enters the gap between the blades 303 of the first tool assembly 3 and the second tool assembly 4, it is bitten and cut, realizing the paper breaking.

Claims

1. An office paper shredder characterized by: The device includes a set of fixed tool holders (1), and a set of drive shaft assemblies (2) are provided between the set of fixed tool holders (1). A tool assembly 1 (3) is sleeved on the surface of the front drive shaft assembly (2), and a tool assembly 2 (4) is sleeved on the surface of the rear drive shaft assembly (2). The drive shaft assembly (2) includes a shaft retainer (201). The shaft retainers (201) are symmetrically engaged with the inside of the set of fixed tool holders (1). A rotating shaft (202) is inserted between the shaft retainers (201). Three guide protrusions (203) are uniformly fixed in a ring on the surface of the rotating shaft (202). A set of threaded rings (204) are symmetrically sleeved on the surface of the rotating shaft (202). A set of retaining blocks (205) are symmetrically engaged on the inner sides of both ends of the rotating shaft (202). A spring (206) is connected to one side of the retaining block (205). A set of sliding rods (207) are symmetrically fixed on the upper and lower surfaces of the retaining block (205). A sliding groove (208) is attached to the outer side of the sliding rod (207).

2. The office-type paper shredder according to claim 1, characterized in that: The rotating shaft (202) and the threaded ring (204) are connected by a thread, and the side of the guide convex strip (203) is in contact with the side of the threaded ring (204).

3. An office paper shredder according to claim 1, wherein: The cross-section of the card block (205) is a regular quadrilateral with a rounded transition at the vertex. The card slot inside the card holder (201) matches the end of the card block (205). The card block (205) forms an elastic structure with the rotating shaft (202) through the spring (206).

4. An office paper shredder according to claim 1, wherein: The locking block (205) forms a locking and sliding structure with the sliding rod (207), the sliding groove (208) and the rotating shaft (202), and the sliding groove (208) and the rotating shaft (202) are integrally formed.

5. An office paper shredder cutter according to claim 1 wherein: The tool assembly (3) includes a cylinder frame (301), which is sleeved on the surface of the rotating shaft (202). The cylinder frame (301) has three guide grooves (302) evenly arranged in a ring inside, and a number of blades (303) are evenly fixedly sleeved on the outside of the cylinder frame (301).

6. An office paper shredder according to claim 5 wherein: The guide groove (302) and the guide protrusion (203) are matched in shape and structure, and the outer diameter of the tube frame (301) is the same as the outer diameter of the threaded ring (204).

7. An office paper shredder according to claim 5 wherein: The difference between the first (3) and the second (4) of the cutting tool assembly is only in the arrangement of the blades (303). The blades (303) in the second (4) and the first (3) of the cutting tool assembly are arranged alternately.

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