Paper shredder

Abstract

The present application belongs to the technical field of paper shredding, and discloses a paper shredder. The frame of the paper shredder has a paper passing channel for paper passing. A conveying device for driving the movement of the paper is arranged in the paper passing channel. A cutter is used to shred the paper. A binding structure is arranged on the first side wall. A binding part of the binding structure is arranged in the paper passing channel, thereby forming a step structure to block the binding needle or the paper clip arranged on the paper. The binding part is arranged in a spaced manner with the second side wall. The gap between the binding part and the second side wall is used for paper passing. In addition, along the conveying direction of the paper, the distance between the cutter and the binding part is less than the length of the paper. When the rear end of the paper reaches the binding structure, the binding needle and other structures can be blocked by the binding part to continue moving. At this time, the front end of the paper is subjected to tearing by two cutters. The tearing force is large, and the paper can be easily torn from the binding needle or the paper clip, thereby avoiding damage to the cutter.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paper shredding, and particularly relates to a paper shredder. BACKGROUND

[0002] The paper shredder is mainly used for shredding waste paper files. In use, the paper to be shredded is placed in the paper shredder in a stack, and the paper is conveyed to a cutter by a conveying device, so as to complete automatic paper feeding and shredding. However, the waste paper files are usually bound with staples, paper clips and the like. If the staples and paper clips enter the cutter synchronously with the paper, the cutter is easily damaged, which affects the service life of the paper shredder.

[0003] To this end, the prior art provides a paper shredder with a staple lifting structure. The staple lifting structure is arranged on the side wall of a paper passing channel and protrudes into the paper passing channel relative to the side wall of the paper passing channel to form a step structure. The step structure is used to block the movement of the staple. One end of the paper is driven by the conveying device to move towards the cutter. The other end with the staple cannot continue to move under the blocking of the staple lifting structure, so as to tear the paper and then pull the paper off the staple. The pulled paper continues to move to the cutter for shredding, while the staple is still blocked by the staple lifting structure and cannot move towards the cutter, thereby preventing the staple from entering the cutter. However, the problem is that the paper needs to be torn to be pulled off the staple, and the conveying device is generally a roller, which cannot provide a large tearing force and is easy to cause the paper to slip, resulting in paper feeding failure. SUMMARY

[0004] The present application provides a paper shredder to solve the problem in the prior art that the conveying device of the paper shredder is generally a roller, which cannot provide a large tearing force for the paper and is easy to cause the paper to slip, resulting in paper feeding failure.

[0005] To achieve the above purpose, the present application adopts the following technical solutions:

[0006] The paper shredder comprises a rack, two cutters rotatably arranged on the rack, and a conveying device arranged on the rack. The rack has a paper passing channel for the paper to pass through. The paper passing channel has a first side wall and a second side wall arranged oppositely. The conveying device is arranged in the paper passing channel and is used to convey the paper in the paper passing channel to the two cutters. The two cutters can cooperate to shred the paper.

[0007] The paper shredder further comprises:

[0008] A paper binding structure is arranged on the first side wall, and has a paper binding part arranged in the paper conveying channel and spaced from the second side wall. The paper binding part can prevent the movement of a paper binding needle or a paper clip arranged on the paper. The distance between the cutter and the paper binding part in the conveying direction of the paper is less than the length of the paper.

[0009] As a preferred solution of the paper shredder, the paper binding part and the first side wall have a cavity for the paper to extend into.

[0010] As a preferred solution of the paper shredder, a plurality of paper binding structures are arranged. The plurality of paper binding structures are arranged in the conveying direction of the paper.

[0011] As a preferred solution of the paper shredder, the paper conveying channel includes a left paper conveying channel, a right paper conveying channel, and a paper shredding channel. The intersection of the left paper conveying channel and the right paper conveying channel communicates with the paper shredding channel, and the two cutters are respectively arranged on the two sides of the paper shredding channel.

[0012] As a preferred solution of the paper shredder, a plurality of paper binding structures are arranged. Part of the paper binding structures are arranged in the left paper conveying channel, and the other part of the paper binding structures are arranged in the right paper conveying channel.

[0013] As a preferred solution of the paper shredder, the conveying device includes two drive roller sets rotatably arranged on the frame. One of the drive roller sets is arranged in the left paper conveying channel, and the other of the drive roller sets is arranged in the right paper conveying channel.

[0014] As a preferred solution of the paper shredder, the frame includes a frame body and a cover detachably connected to the frame body. The frame body has an opening, and the cover is used to close the opening.

[0015] As a preferred solution of the paper shredder, a protrusion is arranged on the cover. The protrusion is arranged at the intersection of the left paper conveying channel and the right paper conveying channel and extends towards the paper shredding channel.

[0016] As a preferred solution of the paper shredder, the cover includes a cover body, a mounting plate connected to the cover body, and a resilient member arranged between the cover body and the mounting plate. The protrusion is arranged on the mounting plate, and the resilient member is used to provide an elastic force for moving the mounting plate away from the cover body.

[0017] As a preferred solution of the paper shredder, the frame further has a paper storage cavity for storing the paper. The paper storage cavity communicates with the side of the paper conveying channel away from the cutter.

[0018] The present application has the following advantages:

[0019] The present application provides a paper shredder, the frame of the paper shredder has a paper passing channel for paper passing, a conveying device for driving the movement of the paper is arranged in the paper passing channel, and a cutter is used for shredding the paper. The paper shredder further comprises a staple lifting structure arranged on a first side wall, a staple lifting part of the staple lifting structure is arranged in the paper passing channel, thereby forming a step structure to block a staple or a paper clip arranged on the paper; the staple lifting part is arranged in a spaced manner with a second side wall, and a gap between the staple lifting part and the second side wall is used for paper passing. In addition, along the conveying direction of the paper, the distance between the cutter and the staple lifting part is less than the length of the paper, so that when the front end of the paper has just entered between the two cutters during the conveying of the paper, the rear end of the paper has not yet passed through the staple lifting structure, and as the paper continues to be conveyed, when the rear end of the paper reaches the staple lifting structure, the staple or the paper clip and the like can be blocked by the staple lifting part to continue to move, at this time, the front end of the paper is subjected to tearing by the two cutters, and the tearing force is large, so that the paper can be easily torn from the staple or the paper clip, and the staple or the paper clip cannot continue to advance under the blocking of the staple lifting part, thereby preventing the staple or the paper clip from entering the cutter and avoiding damage to the cutter. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the overall structure of the paper shredder in the embodiment of the present application Figure One ;

[0021] Figure 2 is the overall structure of the paper shredder in the embodiment of the present application Figure Two ;

[0022] Figure 3 is the cross-sectional view of the paper shredder in the first embodiment of the present application Figure One ;

[0023] Figure 4 is the cross-sectional view of the paper shredder in the first embodiment of the present application Figure Two ;

[0024] Figure 5 is the cross-sectional view of the paper shredder in the first embodiment of the present application Figure Three ;

[0025] Figure 6 is the structure diagram of the conveying device in the first embodiment of the present application

[0026] Figure 7 is the cross-sectional view of the paper shredder in the second embodiment of the present application Figure One ;

[0027] Figure 8 is the cross-sectional view of the paper shredder in the second embodiment of the present application Figure Two ;

[0028] Figure 9is a cross section of the paper shredder in the second embodiment of the present application Figure Three .

[0029] In the drawings:

[0030] 100, frame; 101, first side wall; 102, second side wall; 103, cavity; 110, frame body; 120, cover; 121, cover body; 122, mounting plate; 123, elastic member; 124, manual paper feeding channel; 130, paper placing cavity;

[0031] 200, cutter;

[0032] 300, conveying device; 301, driving roller set; 302, transmission shaft; 303, transmission gear;

[0033] 400, paper;

[0034] 500, ordering structure; 501, ordering part;

[0035] 600, protrusion. DETAILED DESCRIPTION

[0036] The present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the present application and not in limitation thereof. It should also be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings rather than all the parts.

[0037] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] In the present application, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or can include the contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and oblique above of the first feature to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "lower", "lower" and "lower" of the first feature to the second feature include the vertical and oblique below of the first feature to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0039] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0040] Embodiment one

[0041] The paper shredder is mainly used for shredding waste paper files. In use, the paper to be shredded is placed in the paper shredder in a stack, and the paper is conveyed to the cutter by the conveying device, and the paper is cut by the cutter to complete automatic paper feeding and shredding. In order to prevent the staple, paper clip and the like attached to the paper from entering the cutter, the prior art provides a paper shredder with a staple lifting structure. The staple lifting structure is arranged on the side wall of the paper conveying channel and protrudes into the paper conveying channel relative to the side wall of the paper conveying channel to form a step structure. The step structure is used to block the movement of the staple. One end of the paper is driven by the conveying device to move towards the cutter. The other end with the staple cannot continue to move under the block of the staple lifting structure, thereby tearing the paper and pulling the paper off the staple. The pulled paper continues to move to the cutter for shredding, and the staple is still blocked by the staple lifting structure and cannot move towards the cutter. However, the problem is that the paper needs to be torn to be pulled off the staple, and the conveying device is generally a roller, which cannot provide a large tearing force, which can easily cause the paper to slip and cause paper feeding failure.

[0042] To solve the above problems, the present embodiment provides a paper shredder to solve the problem that the conveying device of the paper shredder in the prior art is generally a roller, which cannot provide a large tearing force to the paper, which can easily cause the paper to slip and cause paper feeding failure. It can be used in the field of paper shredding technology.

[0043] Reference Figures 1-6 The paper shredder includes a rack 100, two cutters 200 rotatably arranged on the rack 100, and a conveying device 300 arranged on the rack 100. The rack 100 has a paper conveying channel for the paper 400 to pass through. The paper conveying channel has a first side wall 101 and a second side wall 102 arranged opposite to each other. The conveying device 300 is arranged in the paper conveying channel and can be arranged on the first side wall 101 or the second side wall 102 and is used to convey the paper 400 in the paper conveying channel to the two cutters 200. The two cutters 200 can cooperate to shred the paper 400. The paper shredder can convey the paper 400 in the paper conveying channel to the two cutters 200 by the conveying device 300, and shred the paper 400 by the cooperation of the two cutters 200 to complete automatic paper feeding and shredding.

[0044] Continue to referFigures 1-6 The shredder further comprises a tacking structure 500 arranged on the first side wall 101, the tacking structure 500 has a tacking portion 501 arranged in the paper passing channel to form a step structure to block the staple or the paper clip arranged on the paper 400; the tacking portion 501 is arranged spaced apart from the second side wall 102, and the gap between the tacking portion 501 and the second side wall 102 is used for paper passing. In this way, the tacking portion 501 is arranged between the first side wall 101 and the second side wall 102, and in use, the paper 400 moves close to the tacking structure 500, and the tacking portion 501 can prevent the staple or the paper clip arranged on the paper 400 from moving to block the staple or the paper clip arranged on the paper 400.

[0045] With reference to the foregoing Figures 1-6 In the conveying direction of the paper 400, the distance between the cutter 200 and the tacking portion 501 is less than the length of the paper 400, so that in the conveying process of the paper 400, the front end of the paper 400 has just entered between the two cutters 200, and the rear end has not yet passed the tacking structure 500. As the paper 400 continues to be conveyed, when the rear end of the paper 400 reaches the tacking structure 500, the staple or the paper clip and the like can be blocked by the tacking portion 501 from continuing to move, at this time, the front end of the paper 400 is subjected to tearing by the two cutters 200, and the tearing force is relatively large, so that the paper 400 can be easily torn from the staple or the paper clip, and the staple or the paper clip cannot continue to move forward under the blocking of the tacking portion 501, thereby preventing the staple or the paper clip from entering the cutter 200 to avoid damaging the cutter 200.

[0046] Specifically, the above structure has the following two schemes:

[0047] One of them is that the tacking structure 500 is a protrusion protruding towards the second side wall 102, that is, the tacking structure 500 forms a step with the first side wall 101, and the tacking portion 501 is located at the tip of the step to play a tacking role.

[0048] Another scheme is adopted in this embodiment, as shown in FIG. Figures 1-6 The tacking portion 501 and the first side wall 101 have a cavity 103 for the paper 400 to extend into, so that the tacking portion 501 and the first side wall 101 form the cavity 103, in the process of tearing the paper 400, the front end of the paper 400 is located between the two cutters 200, and the rear end with the staple or the paper clip arranged thereon can enter the cavity 103 between the tacking portion 501 and the first side wall 101, further preventing the staple or the paper clip from continuing to move with the paper 400, and providing a tearing force to the rear end of the paper 400 through the tacking portion 501 to facilitate the paper 400 to be successfully torn.

[0049] With reference to the foregoingFigures 1-6 With reference to the above Figures 1-6 The plurality of starting structures 500 are arranged along the conveying direction of the paper 400. When one starting structure 500 fails due to accidental factors, the other starting structures 500 can block the staple or the paper clip again to further prevent the staple or the paper clip from entering the cutter 200.

[0050] With reference to the above Figures 1-6 The paper conveying passage includes a left paper conveying passage, a right paper conveying passage, and a shredding passage. The intersection of the left paper conveying passage and the right paper conveying passage is communicated with the shredding passage, and the two cutters 200 are respectively located at two sides of the shredding passage. The paper 400 can be partially placed in the left paper conveying passage and partially placed in the right paper conveying passage. Under the action of the conveying device 300, the middle part of the paper 400 is bent towards the shredding passage, and the two end parts of the paper 400 enter in the subsequent process.

[0051] With reference to the above Figures 1-6 Because the staple or the paper clip of the paper 400 is not uniformly arranged, some of the papers 400 are stapled or clipped on the left side, and some are stapled or clipped on the right side. Therefore, in order to further prevent the staple or the paper clip from entering the cutter 200, the left paper conveying passage and the right paper conveying passage need to have the function of blocking the staple or the paper clip. Specifically, part of the starting structures 500 are arranged in the left paper conveying passage, and the other part of the starting structures 500 are arranged in the right paper conveying passage. In this embodiment, one starting structure 500 is arranged in the left paper conveying passage, and two starting structures 500 are arranged in the right paper conveying passage.

[0052] Optionally, the right paper conveying passage is bent and has a first passage and a second passage communicated with each other. The first passage extends along the horizontal direction and is communicated with the left paper conveying passage and the shredding passage to accommodate the paper 400 with a longer size. Among the two starting structures 500 of the right paper conveying passage, one starting structure 500 is arranged in the first passage, and the other starting structure 500 is arranged in the second passage.

[0053] In this embodiment, the starting part 501 of each starting structure 500 and the first side wall 101 have a cavity 103 for the paper 400 to extend into, so as to achieve the best starting effect.

[0054] In other embodiments, the cavity 103 is provided between the first sidewall 101 and the lifting portion 501 of the lifting structure 500 arranged in the first passageway, and the cavity 103 is not provided between the first sidewall 101 and the lifting portion 501 of the lifting structure 500 arranged in the second passageway. Alternatively, the cavity 103 is not provided between the first sidewall 101 and the lifting portion 501 of the lifting structure 500 arranged in the first passageway, and the cavity 103 is provided between the first sidewall 101 and the lifting portion 501 of the lifting structure 500 arranged in the second passageway. Those skilled in the art can flexibly arrange according to actual needs, and more structures can be combined.

[0055] With reference to the above Figure 6 , the conveying device 300 comprises two driving roller sets 301 rotatably arranged on the frame 100, one of the driving roller sets 301 is arranged in the left paper passing passageway, and the other driving roller set 301 is arranged in the right paper passing passageway. The driving roller set 301 comprises a plurality of rollers arranged at intervals, and the rollers drive the paper 400 to move. Optionally, the conveying device 300 further comprises a transmission shaft 302 rotatably arranged on the frame 100, the rollers of the driving roller set 301 are arranged on the transmission shaft 302 and can synchronously rotate under the driving of the transmission shaft 302, and the end of the transmission shaft 302 is provided with a transmission gear 303, and a driving member such as a motor drives the transmission gear 303 to rotate, so as to drive the transmission shaft 302 to rotate.

[0056] With reference to the above Figures 1-6 , the frame 100 comprises a frame body 110 and a cover 120 detachably connected to the frame body 110, the frame body 110 has an opening, and the cover 120 is used to close the opening, so that the cover 120 and the frame body 110 form part of the left paper passing passageway and part of the right paper passing passageway.

[0057] With reference to the above Figures 1-6 , the shredder further comprises a protrusion 600 arranged on the cover 120, the protrusion 600 is arranged at the intersection of the left paper passing passageway and the right paper passing passageway and extends towards the shredding passageway, so that the paper 400 can be bent by the protrusion 600 to make the paper 400 more easily enter the shredding passageway. Optionally, one of the two driving roller sets 301 is arranged at the intersection of the left paper passing passageway and the shredding passageway, and the other is arranged at the intersection of the right paper passing passageway and the shredding passageway, so that the paper 400 can be pushed to the driving roller set 301 by the protrusion 600, so that the driving roller set 301 can provide greater driving force for the paper.

[0058] Optionally, the cover 120 is provided with a manual paper feeding channel 124 opposite to the paper shredding channel, through which the user can directly feed the paper 400 into the paper shredding channel. Optionally, the manual paper feeding channel 124 passes through the cover 120 and the protrusion 600 in sequence.

[0059] With reference to the foregoing Figures 1-6 , the cover 120 comprises a cover body 121, a mounting plate 122 connected to the cover body 121, and an elastic member 123 arranged between the cover body 121 and the mounting plate 122, the protrusion 600 is arranged on the mounting plate 122, and the elastic member 123 is used to provide an elastic force for moving the mounting plate 122 away from the cover body 121, so as to push the protrusion 600 to move towards the paper shredding channel by the elastic member 123, to push the paper 400 to move, and to be able to adapt to the paper 400 stacked in different thicknesses.

[0060] With reference to the foregoing Figures 1-6 , the frame 100 is also provided with a paper storage cavity 130 for storing the paper 400, the paper storage cavity 130 is in communication with the side of the paper conveying channel away from the cutter 200. Among them, the paper storage cavity 130 has two paper storage cavity side walls, one of which is connected with the first side wall 101, and the other is connected with the second side wall 102, the distance between the two paper storage cavity side walls is less than the distance between the first side wall 101 and the second side wall 102, so that more number of paper 400 can be stored in the paper storage cavity 130.

[0061] Embodiment two

[0062] This embodiment provides another paper shredder, which has basically the same structure as the paper shredder in embodiment one, the difference lies in the number and position of the binding structures 500 and the number of the paper storage cavities 130.

[0063] With reference to the foregoing Figures 7-9 , in this embodiment, the paper storage cavity 130 is provided with two, one of which is in communication with the left paper conveying channel, and the other is in communication with the right paper conveying channel, to adapt to the paper 400 with larger length. Optionally, the left paper conveying channel and the right paper conveying channel are both curvedly arranged, to further improve the length of the paper 400 that can be accommodated. In addition, in this embodiment, the left paper conveying channel is provided with two binding structures 500, and the right paper conveying channel is also provided with two binding structures 500, and the binding structures 500 on both sides are symmetrically distributed. In this way, the binding structures 500 can better play a role in binding the paper 400 on both sides of the paper 400.

[0064] Obviously, the above embodiments of the present application are merely exemplary but not intended to limit the embodiments of the present application. Various obvious changes, re-adjustments and substitutions can be made by those skilled in the art without departing from the scope of the present application. It is not necessary or possible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A paper shredder, comprising a frame (100), two blades (200) rotatably disposed on the frame (100), and a conveying device (300) disposed on the frame (100), the frame (100) having a paper feed channel for paper (400) to pass through, the paper feed channel having a first sidewall (101) and a second sidewall (102) disposed opposite to each other, the conveying device (300) being disposed within the paper feed channel and used to convey the paper (400) located within the paper feed channel to the two blades (200), the two blades (200) being able to cooperate to shred the paper (400). Its features are, The paper shredder also includes: A stapling structure (500) is disposed on the first sidewall (101). The stapling structure (500) has a stapling part (501) disposed within the paper feeding channel and spaced apart from the second sidewall (102). The stapling part (501) can prevent the movement of staples or paper clips disposed on the paper (400). Along the feeding direction of the paper (400), the distance between the cutter (200) and the stapling part (501) is less than the length of the paper (400), thereby preventing the paper (400) from moving during feeding. During the feeding process, when the front end of the paper (400) has just entered between the two cutters (200), the rear end has not yet passed the starting structure (500). As the paper (400) continues to be fed, when the rear end of the paper (400) reaches the starting structure (500), the starting part (501) can block the staple or paperclip from continuing to move. At this time, the front end of the paper (400) is torn by the two cutters (200), which can tear the paper (400) off the staple or paperclip. The paper feeding channel includes a left paper feeding channel, a right paper feeding channel, and a shredding channel. The intersection of the left paper feeding channel and the right paper feeding channel is connected to the shredding channel. The two cutters (200) are located on both sides of the shredding channel. The frame (100) also has a paper storage cavity (130) for storing the paper (400). The paper storage cavity (130) is connected to the side of the paper feed channel away from the cutter (200). There are two paper storage cavities (130), one of which is connected to the left paper feed channel and the other is connected to the right paper feed channel. Both the left paper feed channel and the right paper feed channel are curved.

2. The paper shredder according to claim 1, characterized in that, The starting part (501) and the first sidewall (101) have a cavity (103) for the paper (400) to extend into.

3. The paper shredder according to claim 1, characterized in that, Multiple order-setting structures (500) are provided, and the multiple order-setting structures (500) are spaced apart along the conveying direction of the paper (400).

4. The paper shredder according to claim 1, characterized in that, Multiple order-starting structures (500) are provided, with some of the order-starting structures (500) located in the left paper feeding channel and others located in the right paper feeding channel.

5. The paper shredder according to claim 1, characterized in that, The conveying device (300) includes two drive roller assemblies (301) rotatably mounted on the frame (100), one of which is located in the left paper feeding channel and the other is located in the right paper feeding channel.

6. The paper shredder according to claim 1, characterized in that, The rack (100) includes a rack body (110) and a flap (120) detachably connected to the rack body (110), the rack body (110) having an opening, and the flap (120) for closing the opening.

7. The paper shredder according to claim 6, characterized in that, It also includes a protrusion (600) disposed on the cover (120), the protrusion (600) being disposed at the intersection of the left paper feeding channel and the right paper feeding channel, and extending toward the shredding channel.

8. The paper shredder according to claim 7, characterized in that, The flip cover (120) includes a flip cover body (121), a mounting plate (122) connected to the flip cover body (121), and an elastic member (123) disposed between the flip cover body (121) and the mounting plate (122). The protrusion (600) is disposed on the mounting plate (122), and the elastic member (123) is used to provide an elastic force to move the mounting plate (122) away from the flip cover body (121).

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