Paper feeding wheel for automatic paper shredder

Abstract

The utility model relates to the technical field of paper shredders, in particular to a paper feeding wheel for an automatic paper shredder, which comprises a rotating shaft, connecting seats are fixedly connected to the left end and the right end of the rotating shaft, and connecting grooves are formed in the ends, far away from the rotating shaft, of the two connecting seats. Clamping blocks are fixedly connected to the middles of the inner walls of the sides, close to the rotating shaft, of the two connecting grooves, connecting mechanisms are connected to the interiors of the two connecting grooves in a clamped mode, paper feeding wheel bodies are fixedly installed on the outer sides of the two connecting mechanisms, and embedding strips shaped like a Chinese character'gan 'are fixedly connected to the upper portions and the lower portions of the inner walls of the two connecting grooves; limiting holes are formed in the front portions and the rear portions of the outer surfaces of the two connecting grooves. According to the paper feeding wheel for the automatic paper shredder, the paper feeding wheel body is convenient and rapid to mount and dismount, the rotating shaft does not need to be dismounted in the whole process, the mounting and dismounting process of the paper feeding wheel is simplified, the maintenance efficiency is improved, and the maintenance cost is reduced.

Description

Technical Field

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

[0002] Automatic paper shredders are commonly used office equipment for processing waste paper and are widely used in various office spaces. They play an important role in information security and paper recycling. The paper feed rollers, as key components of the paper shredder, play a crucial role in guiding the paper smoothly and continuously into the shredding mechanism during the shredding process.

[0003] In existing automatic paper shredders, the feed rollers are prone to wear due to intense friction with the paper during continuous paper transport. Severe wear reduces the feed rollers' ability to deliver paper, leading to poor paper feeding or even paper jams. However, because the feed rollers are fixedly connected to the shaft, repairing or replacing them often requires disassembling the entire shaft from the shredder. This complex process is time-consuming, labor-intensive, and requires specialized repair skills and tools, increasing maintenance costs and causing the shredder to malfunction for extended periods, impacting office efficiency. Therefore, we have introduced a new feed roller design for automatic paper shredders. Utility Model Content

[0004] The main objective of this invention is to provide a paper feeding wheel for an automatic paper shredder, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A paper feeding wheel for an automatic paper shredder includes a rotating shaft. Connecting seats are fixedly connected to both the left and right ends of the rotating shaft. Connecting grooves are formed at the ends of the connecting seats furthest from the rotating shaft. Engaging blocks are fixedly connected to the middle of the inner walls of the two connecting grooves on the side closest to the rotating shaft. Connecting mechanisms are engaged inside the two connecting grooves. Paper feeding wheel bodies are fixedly installed on the outer sides of the two connecting mechanisms. T-shaped interlocking strips are fixedly connected to the upper and lower parts of the inner walls of the two connecting grooves. Limiting holes are formed on the front and rear parts of the outer surfaces of the two connecting grooves.

[0007] Preferably, the connecting mechanism includes a connecting block, and the front and rear parts of the outer surface of the connecting block are provided with grooves. An auxiliary locking mechanism is slidably connected inside the two grooves. A locking groove is provided in the middle of the right end of the connecting block, and a T-shaped fitting groove is provided in the upper and lower parts of the outer surface of the connecting block.

[0008] Preferably, the connecting block engages with the connecting slot, and the left end of the connecting block is fixedly connected to the paper feeding wheel body.

[0009] Preferably, the engaging groove is engaged with the engaging block, and the two cross-shaped engaging grooves are respectively engaged with the two cross-shaped engaging strips.

[0010] Preferably, the auxiliary locking mechanism includes a limiting rod, an activity groove is formed inside the limiting rod, guiding grooves are formed in both the upper part and the lower part of the inner wall of the activity groove, a movable rod is inserted and movably connected to the rear end of the limiting rod, guiding blocks are fixedly connected to both the front side of the upper part and the front side of the lower part of the outer surface of the movable rod, and a spring is fixedly connected to the rear end of the limiting rod.

[0011] Preferably, the limiting rod is inserted and slidably connected to the groove, the movable rod is inserted and movably connected to the activity groove, and the two guiding blocks are respectively slidably connected to the two guiding grooves.

[0012] Preferably, both the spring and the rear end of the movable rod are fixedly connected to the inner wall of the groove, and the spring is located outside the movable rod.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. By placing the paper feed wheel body on the side of the connecting seat and applying force to the two limiting rods, the two limiting rods slide into the two grooves respectively and compress the spring. At the same time, the guiding blocks slide in the corresponding guiding grooves, enabling the limiting rods to slide smoothly in the grooves. The connecting block is snapped into the connecting groove. When the positions of the two limiting rods correspond to the two limiting holes respectively, the two limiting rods can automatically pop out from the corresponding two limiting holes under the release of the elastic force of the spring to assist in locking, so that the paper feed wheel body can be conveniently and quickly installed and disassembled. The whole process does not require the disassembly of the rotating shaft, simplifies the installation and disassembly process of the paper feed wheel, improves the maintenance efficiency, and reduces the maintenance cost;

[0015] 2. When the connecting block is embedded into the connecting groove, the two cross-shaped engaging strips inside the connecting seat are respectively embedded into the two cross-shaped engaging grooves above and below the connecting block. At the same time, the engaging block inside the connecting groove is snapped into the engaging groove on the connecting block, which can improve the installation connection stability of the paper feed wheel body, enable the paper feed wheel body to remain stable when rotating and dealing with different resistances, and ensure that the paper feed wheel body can operate stably under different working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of a paper feed wheel for an automatic paper shredder of the present utility model;

[0017] Figure 2 is the overall structural schematic diagram of the connecting seat of a paper feed wheel for an automatic paper shredder of the present utility model;

[0018] Figure 3This is a schematic diagram of the overall structure of the connecting mechanism for the paper feeding wheel of an automatic paper shredder according to the present invention;

[0019] Figure 4 This is a schematic diagram of the overall structure of an auxiliary locking mechanism for the paper feeding wheel of an automatic paper shredder according to the present invention.

[0020] In the diagram: 1. Rotating shaft; 2. Connecting seat; 3. Connecting groove; 4. Engaging block; 5. Connecting mechanism; 51. Connecting block; 52. Groove; 53. Auxiliary locking mechanism; 531. Limiting rod; 532. Movable groove; 533. Guide groove; 534. Movable rod; 535. Guide block; 536. Spring; 54. Engaging groove; 55. T-shaped fitting groove; 6. Paper feed roller body; 7. T-shaped fitting strip; 8. Limiting hole. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figure 1-4 This utility model provides a technical solution:

[0025] A paper feeding wheel for an automatic shredder, comprising a rotating shaft 1. Both the left end and the right end of the rotating shaft 1 are fixedly connected with connecting seats 2. One end of each of the two connecting seats 2 away from the rotating shaft 1 is provided with a connecting groove 3. In the middle of the inner wall of each of the two connecting grooves 3 on the side close to the rotating shaft 1, a clamping block 4 is fixedly connected. A connecting mechanism 5 is clamped and connected inside each of the two connecting grooves 3. A paper feeding wheel body 6 is fixedly installed on the outer side of each of the two connecting mechanisms 5. In the upper part and the lower part of the inner wall of each of the two connecting grooves 3, a cross-shaped fitting strip 7 is fixedly connected. Limiting holes 8 are provided in the front part and the rear part of the outer surface of each of the two connecting grooves 3.

[0026] In this embodiment, the connecting mechanism 5 includes a connecting block 51. Grooves 52 are provided in the front part and the rear part of the outer surface of the connecting block 51. An auxiliary locking mechanism 53 is inserted and slidably connected inside each of the two grooves 52. A clamping groove 54 is provided in the middle of the right end of the connecting block 51. Cross-shaped fitting grooves 55 are provided in the upper part and the lower part of the outer surface of the connecting block 51. The connecting block 51 is clamped and connected with the connecting groove 3, and the left end of the connecting block 51 is fixedly connected with the paper feeding wheel body 6. The clamping groove 54 is clamped and connected with the clamping block 4. The two cross-shaped fitting grooves 55 are respectively fitted and connected with the two cross-shaped fitting strips 7.

[0027] Through the above scheme: when the connecting block 51 is inserted into the connecting groove 3, the two cross-shaped fitting strips 7 inside the connecting seat 2 are respectively inserted into the two cross-shaped fitting grooves 55 above and below the connecting block 51. At the same time, the clamping block 4 inside the connecting groove 3 is clamped into the clamping groove 54 on the connecting block 51, which can improve the installation and connection stability of the paper feeding wheel body 6.

[0028] In this embodiment, the auxiliary locking mechanism 53 includes a limiting rod 531. An activity groove 532 is provided inside the limiting rod 531. Guide grooves 533 are provided in the upper part and the lower part of the inner wall of the activity groove 532. An activity rod 534 is inserted and movably connected to the rear end of the limiting rod 531. Guide blocks 535 are fixedly connected to the front side of the upper part and the front side of the lower part of the outer surface of the activity rod 534. A spring 536 is fixedly connected to the rear end of the limiting rod 531. The limiting rod 531 is inserted and slidably connected with the groove 52. The activity rod 534 is inserted and movably connected with the activity groove 532. The two guide blocks 535 are respectively slidably connected with the two guide grooves 533. The spring 536 and the rear end of the activity rod 534 are both fixedly connected with the inner wall of the groove 52, and the spring 536 is located outside the activity rod 534.

[0029] The above scheme applies force to the two limiting rods 531, causing them to slide into the two grooves 52 respectively and compress the spring 536. At the same time, the guide block 535 slides in the corresponding guide groove 533, allowing the limiting rods 531 to slide smoothly in the grooves 52 and engage the connecting block 51 into the connecting groove 3. When the two limiting rods 531 correspond to the positions of the two limiting holes 8 respectively, the spring force of the spring 536 releases the two limiting rods 531, allowing them to automatically pop out from the corresponding two limiting holes 8 for auxiliary locking, thus making it easy and quick to install and remove the paper feeding roller body 6.

[0030] It should be noted that this utility model is a paper feeding wheel for an automatic paper shredder. During use, when the paper feeding wheel body 6 is inserted laterally into the connecting seat 2, a force is applied to the double-sided limiting rods 531, driving them to compress the spring 536 along the guide groove 533 and retract into the groove 52. With the cooperation of the guide block 535 and the guide groove 533, the limiting rods 531 achieve linear movement. When the connecting block 51 is fully embedded in the connecting groove 3, the pre-compressed spring 536 releases its elastic potential energy, pushing the limiting rods 531 to automatically align and engage with the limiting hole 8 to complete auxiliary self-locking, thus realizing the rapid movement of the paper feeding wheel body 6. Quick installation and disassembly, without disassembling the rotating shaft 1 throughout the process, optimizes the maintenance process and reduces operating costs. During assembly, the T-shaped interlocking strip 7 built into the connecting seat 2 and the T-shaped interlocking groove 55 on the upper and lower surfaces of the connecting block 51 form a double limiting structure. At the same time, the locking block 4 in the connecting groove 3 and the locking groove 54 of the connecting block 51 generate a locking force. This three-dimensional coupling mechanism not only enhances the radial positioning accuracy, but also effectively offsets the axial load fluctuation during equipment operation, ensuring that the paper feeding roller body 6 always maintains a stable working state under continuous alternating stress, and comprehensively improves the operational reliability under different working conditions.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A paper feeding wheel for an automatic paper shredder, comprising a rotating shaft (1), characterized in that: The left and right ends of the rotating shaft (1) are fixedly connected to the connecting seat (2). The two connecting seats (2) are provided with connecting grooves (3) at the ends away from the rotating shaft (1). The middle of the inner wall of the two connecting grooves (3) near the rotating shaft (1) is fixedly connected to the locking block (4). The two connecting grooves (3) are locked with the connecting mechanism (5). The outer side of the two connecting mechanisms (5) is fixedly installed with the paper feeding wheel body (6). The upper part and lower part of the inner wall of the two connecting grooves (3) are fixedly connected with the T-shaped interlocking strip (7). The front and rear parts of the outer surface of the two connecting grooves (3) are provided with limit holes (8). The connecting mechanism (5) includes a connecting block (51). The front and rear parts of the outer surface of the connecting block (51) are provided with grooves (52). An auxiliary locking mechanism (53) is slidably connected inside the two grooves (52). A locking groove (54) is provided in the middle of the right end of the connecting block (51). A T-shaped fitting groove (55) is provided on the upper and lower parts of the outer surface of the connecting block (51).

2. The paper feeding roller for an automatic paper shredder according to claim 1, characterized in that: The connecting block (51) engages with the connecting groove (3), and the left end of the connecting block (51) is fixedly connected to the paper feeding wheel body (6).

3. The paper feeding roller for an automatic paper shredder according to claim 1, characterized in that: The engaging groove (54) engages with the engaging block (4), and the two T-shaped interlocking grooves (55) are respectively engaged with the two T-shaped interlocking strips (7).

4. A paper feeding roller for an automatic paper shredder according to claim 1, characterized in that: The auxiliary locking mechanism (53) includes a limiting rod (531), which has a movable groove (532) inside. The upper part and the lower part of the inner wall of the movable groove (532) are both provided with guide grooves (533). The rear end of the limiting rod (531) is movably connected to a movable rod (534). The upper front side and the lower front side of the outer surface of the movable rod (534) are both fixedly connected to guide blocks (535). The rear end of the limiting rod (531) is fixedly connected to a spring (536).

5. A paper feeding roller for an automatic paper shredder according to claim 4, characterized in that: The limiting rod (531) is slidably connected to the groove (52), the movable rod (534) is slidably connected to the movable slot (532), and the two guide blocks (535) are slidably connected to the two guide slots (533) respectively.

6. A paper feeding roller for an automatic paper shredder according to claim 4, characterized in that: The rear ends of the spring (536) and the movable rod (534) are fixedly connected to the inner wall of the groove (52), and the spring (536) is located outside the movable rod (534).

Images