Low-noise paper shredder

Abstract

The low-noise paper shredder comprises a shell and a machine core, the shell comprises a bottom shell and a surface cover, Z-axis direction limiting structures used for abutting against the machine core are arranged on the portions, located on the inner side face of the shell, of the bottom shell and the surface cover, and an X-axis direction limiting structure and a Y-axis direction limiting structure which are arranged in the width direction and the length direction of the bottom shell are arranged in the bottom shell; and the X-axis direction limiting structure, the Y-axis direction limiting structure and the Z-axis direction limiting structure are all flexible structures, so that the movement and the shell are in non-rigid contact. The X-axis direction limiting structure, the Y-axis direction limiting structure and the Z-axis direction limiting structure are arranged to limit jumping and deviation of the machine core in the X-axis direction, the Y-axis direction and the Z-axis direction, the machine core can still be stably supported in the machine core under the condition that no rigid fixing piece is arranged, meanwhile, due to the fact that the machine core does not make direct contact with the face cover and the bottom shell, the machine core can be stably supported by the machine core, and the service life of the machine core is prolonged. The noise of the whole paper shredder is reduced to a great extent, the assembly is simpler, and the assembly efficiency of the whole paper shredder is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paper shredders, in particular to a low-noise paper shredder. BACKGROUND

[0002] At present, there are various types of paper shredders on the market, ranging from large power paper shredders used in factories to shred large paper products or various plastic cards, to small paper shredders used in companies to shred confidential documents or waste paper. The paper shredder often improves its paper shredding effect by changing its shape or improving the paper shredding blade in the paper shredder, but people find that no matter how unique the design of the paper shredder is or how reasonable the design of the paper shredding blade is, it cannot reduce or eliminate the noise generated when the paper shredder is running.

[0003] The noise generated by the paper shredder is often the noise generated by the vibration between the paper shredder core (the part where the paper shredding blade is located) and the paper shredder shell when the paper shredder is running. The reason is that the traditional paper shredder core is clamped in the shell formed by the upper and lower covers through the clamping points arranged at the four corners of the upper and lower covers, and there is no fastener connection between the paper shredder core and the shell. There is a gap between the clamping points at the four corners of the paper shredder core and the shell, so when the paper shredder is working, the clamping points at the four corners of the paper shredder core and the shell will vibrate due to the micro-collision, and noise will be generated. To this end, some people have tried to install plastic feet on the clamping points at the four corners of the paper shredder core to achieve the effect of shock absorption, but the effect is not ideal after use. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a low-noise paper shredder, which suspends the core in the shell by limiting the X-axis, Y-axis and Z-axis of the core, to achieve the effect of shock absorption and noise reduction.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A low-noise paper shredder, comprising a shell and a core, the shell comprising a bottom shell and a cover, the bottom shell and the cover being provided with Z-axis direction limiting structures on the inner side of the shell for abutting against the core, the bottom shell being provided with X-axis direction limiting structures and Y-axis direction limiting structures arranged along the width direction and the length direction of the bottom shell, the X-axis direction limiting structures, the Y-axis direction limiting structures and the Z-axis direction limiting structures all being flexible structures to make the core and the shell in non-rigid contact.

[0007] Further provided: the Z-axis direction limiting structure on the inner side of the cover comprises a cylindrical spiral spring, one end of the cylindrical spiral spring being connected with the shell and the other end abutting against the core.

[0008] Further configuration: The Z-axis limiting structure located inside the bottom shell includes a conical helical spring, the large end of which is connected to the bottom shell and the small end of which is connected to the movement.

[0009] Further configuration: The faceplate and bottom shell are provided with mounting posts extending along the height direction of the outer shell on the inner side of the outer shell, and the Z-axis limiting structure is inserted into the mounting posts. The original length of the Z-axis limiting structure is greater than the length of the mounting posts.

[0010] Further configuration: There are at least three mounting posts provided on the faceplate or on the bottom shell.

[0011] Further configuration: The X-axis direction limiting structure includes a first anti-collision soft pad located on the side of the bottom shell in the width direction, and the first anti-collision soft pad has a plurality of units along the width direction of the bottom shell.

[0012] Further configuration: The X-axis direction limiting structure also includes a first anti-collision rib located on the side of the bottom shell in the width direction.

[0013] Further configuration: the distance between the side of the first anti-collision soft pack near the movement and the movement is greater than 2mm, and the distance between the first anti-collision rib and the movement is greater than the distance between the first anti-collision soft pack and the movement.

[0014] Further configuration: The Y-axis direction limiting structure includes a second anti-collision soft pad and / or a second anti-collision rib located on the side of the bottom shell in the length direction.

[0015] Further configuration: the distance between the side of the second anti-collision soft pack near the movement and the movement is greater than 2mm, and the distance between the second anti-collision rib and the movement is greater than the distance between the second anti-collision soft pack and the movement.

[0016] Compared with existing technologies, the solution in this application has the following advantages:

[0017] This application relates to a low-noise paper shredder that limits the movement and offset of the shredder core in the X, Y, and Z axes by setting X-axis, Y-axis, and Z-axis limiting structures. This allows the shredder core to be stably supported in the machine without any rigid fasteners. At the same time, since the shredder core does not directly contact the top cover and bottom shell, the overall noise of the paper shredder is greatly reduced, and the assembly is simpler, improving the overall assembly efficiency.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and will become apparent from the description or may be learned by practice of this application. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein:

[0020] Figure 1 This is a schematic diagram of the structure of one embodiment of the low-noise paper shredder of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the cover in one embodiment of the low-noise paper shredder of this application;

[0022] Figure 3 This is a schematic diagram of the structure inside the faceplate in one embodiment of the low-noise paper shredder of this application;

[0023] Figure 4 This is a schematic diagram of the bottom shell structure in one embodiment of the low-noise paper shredder of this application;

[0024] Figure 5 This is a schematic diagram of the structure inside the bottom shell in one embodiment of the low-noise paper shredder of this application.

[0025] In the diagram, 1 is the outer shell; 11 is the front cover; 12 is the bottom shell; 21 is the first anti-collision soft pad; 22 is the first anti-collision rib; 31 is the second anti-collision soft pad; 32 is the second anti-collision rib; 41 is the cylindrical helical spring; 42 is the conical helical spring; and 43 is the mounting post. Detailed Implementation

[0026] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0027] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. Furthermore, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0028] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "connection" can refer to a direct connection or an indirect connection via intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description.

[0029] It should be noted that the concepts of "first" and "second" mentioned in this invention are only used to distinguish between devices, modules or units, and are not intended to limit these devices, modules or units to necessarily be different devices, modules or units, nor are they intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0030] Please combine Figures 1 to 5 This application discloses a low-noise paper shredder, including a housing 1 and a core mechanism disposed inside the housing 1. The housing 1 is provided with an X-axis limiting structure, a Y-axis limiting structure and a Z-axis limiting structure to suspend the core mechanism in the housing 1, so as to avoid direct contact between the core mechanism and the housing 1 and reduce the noise generated by mechanical friction or collision between the core mechanism and the housing 1 during the operation vibration, thereby achieving the purpose of noise reduction and improving the user experience.

[0031] Specifically, the outer casing 1 of this application includes a bottom shell 12 and a front cover 11, which are connected to the bottom shell 12 by screws. Both the bottom shell 12 and the front cover 11 have Z-axis limiting structures on their inner surfaces for contacting the movement. That is, the two sides of the movement in the Z-axis direction are connected to the Z-axis limiting structures. X-axis limiting structures are located on both sides of the bottom shell 12 along its width, and Y-axis limiting structures are located on both sides of the bottom shell 12 along its length. These X-axis, Y-axis, and Z-axis limiting structures allow the movement to be floatingly mounted in the center of the bottom shell 12 and the front cover 11, preventing direct contact between the movement and the outer casing 1. This reduces vibration and noise transmission, effectively reducing noise caused by vibration during movement operation. Meanwhile, the X-axis limiting structure, Y-axis limiting structure and Z-axis limiting structure all adopt flexible structure, so that the movement and the outer shell 1 and the limiting structure are in non-rigid contact. The flexible structure has good sound absorption, sound insulation and vibration isolation effect, which can further reduce the transmission of noise to achieve the purpose of noise reduction and quietness.

[0032] In this embodiment, the Z-axis limiting structure uses springs to abut against both sides of the movement. The spring structure inside the faceplate 11 differs from the spring structure inside the bottom case 12. Specifically, the Z-axis limiting structure inside the faceplate 11 uses a cylindrical helical spring 41, with one end abutting against the faceplate 11 and the other end abutting against the reinforcing plate of the movement. The Z-axis limiting structure inside the bottom case 12 uses a conical helical spring 42, with its larger end abutting against the bottom case 12 and its smaller end engaging with the side boss of the movement. The two sides of the movement are suspended between the faceplate 11 and the bottom case 12 by the cylindrical helical springs 41 and 42. Simultaneously, the bottom of the movement is supported and fixed by the conical helical spring 42. During pressure application, the spring coil near the larger end of the conical helical spring 42 is softer, while the spring coil near the smaller end is harder. When the spring is compressed, the softer spring coils tighten first, and as the pressure increases, the stiffer spring coils gradually take over. This characteristic causes the spring stiffness to gradually increase during the stress process, thereby absorbing more energy and exhibiting good buffering performance. Furthermore, the characteristic curve of the conical helical spring 42 gradually changes from linear to nonlinear during the stress process, the stiffness gradually increases, and the natural frequency also changes accordingly. This characteristic helps to eliminate or mitigate resonance phenomena and improve the stability of the movement.

[0033] Meanwhile, mounting posts 43 for mounting springs are provided on the inner side of the faceplate 11 and the inner side of the bottom shell 12. The mounting posts 43 extend along the height direction of the outer shell 1. The cylindrical helical spring 41 and the conical helical spring 42 are correspondingly inserted into the mounting posts 43 provided on the faceplate 11 and the bottom shell 12. The mounting posts 43 limit the springs, and the movement can be stably supported in the outer shell 1 without the need for screws to fix the springs. In this embodiment, the movement and the outer shell 1 do not need to be fixed with screws, thereby reducing the vibration transmission between rigid components and reducing noise caused by vibration.

[0034] In addition, the length of the springs in this embodiment is greater than the length of the mounting post 43, so that the springs protrude from the mounting post 43 and connect with the movement. The end of the mounting post 43 will not directly contact the movement in daily use, thereby preventing the movement from falling off due to large Z-axis direction jump during transportation and operation, and keeping the movement stable in the vertical direction.

[0035] Furthermore, there are no fewer than three mounting posts 43 on the inner side of the faceplate 11 and the inner side of the bottom case 12, so as to provide more stable support for the movement.

[0036] The X-axis limiting structure of this embodiment includes a first anti-collision soft pad 21 disposed on the width side of the bottom shell 12, and several first anti-collision soft pads 21 are provided along the width direction of the bottom shell 12. The first anti-collision soft pads 21 are disposed on both sides of the core along its width direction, so as to protect and support the width side of the core through the first anti-collision soft pads 21, which can absorb and mitigate the impact of the core vibration on the outer shell 1. At the same time, the X-axis limiting structure also includes a first anti-collision rib 22 disposed on the width side of the bottom shell 12. The first anti-collision rib 22 can further reduce the impact force of the core on the outer shell 1 when vibrating. The first anti-collision rib 22 can also significantly improve the strength and rigidity of the outer shell 1 without increasing the wall thickness of the shredder, which helps the shredder maintain stability when the core is running at high speed and reduces deformation or damage caused by vibration or external impact.

[0037] Furthermore, the distance between the first anti-collision soft bag 21 and the movement is greater than 2mm, and the distance between the first anti-collision rib 22 and the movement is greater than the distance between the first anti-collision bag and the movement. That is, there is an X-axis gap between the movement and the outer shell 1 to further reduce the noise generated by the collision between the movement and the outer shell 1 when the movement vibrates during operation. At the same time, when the movement swings significantly relative to the outer shell 1, the X-axis limiting structure can restrict the movement from shifting within a small range in the X-axis direction of the outer shell 1.

[0038] Similarly, the Y-axis limiting structure of this embodiment includes a second anti-collision soft pack 31 disposed on the side of the bottom shell 12 along its length, and several second anti-collision soft packs 31 are provided along the length of the bottom shell 12. The second anti-collision soft packs 31 are disposed on both sides of the movement along its length. At the same time, the Y-axis limiting structure also includes a second anti-collision rib 32 disposed on the side of the bottom shell 12 along its length. The second anti-collision soft pack 31 and the second anti-collision rib 32 have the same effect on the movement in the Y-axis direction as the first anti-collision soft pack 21 and the first anti-collision rib 22 have on the movement in the X-axis direction. Furthermore, the distance between the side of the second anti-collision soft pack 31 near the movement and the movement is greater than 2mm, and the distance between the second anti-collision rib 32 and the movement is greater than the distance between the second anti-collision pack and the movement. In this embodiment, by setting anti-collision bumps and anti-collision ribs on the width and length sides of the outer shell 1, the movement of the core can be limited to a small range on the X and Y axes, thus avoiding the problem of excessive movement of the core during transportation and operation of the paper shredder, which could lead to spring deformation and core detachment.

[0039] In summary, the low-noise paper shredder of this application limits the movement and offset of the core in the X, Y, and Z axes by setting X-axis limiting structures, Y-axis limiting structures, and Z-axis limiting structures. This allows the core to be stably supported in the core without any rigid fasteners. At the same time, since the core does not directly contact the face cover 11 and the bottom shell 12, the noise of the paper shredder is greatly reduced, and the assembly is simpler, improving the overall assembly efficiency.

[0040] The above description is only a partial embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A low-noise paper shredder, comprising a casing and a core mechanism, characterized in that, The outer casing includes a bottom shell and a top cover. Both the bottom shell and the top cover have Z-axis limiting structures on their inner sides for contacting the movement. The bottom shell has X-axis limiting structures and Y-axis limiting structures arranged along its width and length. The X-axis limiting structures, Y-axis limiting structures, and Z-axis limiting structures are all flexible structures to ensure non-rigid contact between the movement and the outer casing.

2. The low-noise paper shredder according to claim 1, characterized in that, The Z-axis limiting structure located inside the cover includes a cylindrical helical spring, one end of which is connected to the outer shell and the other end of which abuts against the movement.

3. The low-noise paper shredder according to claim 2, characterized in that, The Z-axis limiting structure located inside the bottom shell includes a conical helical spring, the large end of which is connected to the bottom shell and the small end of which is connected to the movement.

4. The low-noise paper shredder according to claim 3, characterized in that, The faceplate and bottom shell are provided with mounting posts extending along the height direction of the outer shell on the inner side of the outer shell. The Z-axis limiting structure is inserted into the mounting post, and the original length of the Z-axis limiting structure is greater than the length of the mounting post.

5. The low-noise paper shredder according to claim 4, characterized in that, There are at least three mounting posts provided on the faceplate or on the bottom shell.

6. The low-noise paper shredder according to claim 1, characterized in that, The X-axis limiting structure includes a first anti-collision soft pad located on the side of the bottom shell in the width direction, and the first anti-collision soft pad has a plurality of portions along the width direction of the bottom shell.

7. The low-noise paper shredder according to claim 6, characterized in that, The X-axis direction limiting structure also includes a first anti-collision rib located on the side of the bottom shell in the width direction.

8. The low-noise paper shredder according to claim 7, characterized in that, The distance between the side of the first anti-collision soft pad and the movement is greater than 2mm, and the distance between the first anti-collision rib and the movement is greater than the distance between the first anti-collision soft pad and the movement.

9. The low-noise paper shredder according to claim 1, characterized in that, The Y-axis direction limiting structure includes a second anti-collision soft pad and / or a second anti-collision rib located on the side of the bottom shell in the length direction.

10. The low-noise paper shredder according to claim 9, characterized in that, The distance between the side of the second anti-collision soft pad and the movement is greater than 2mm, and the distance between the second anti-collision rib and the movement is greater than the distance between the second anti-collision soft pad and the movement.

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