Silencing paper shredder for finance and accounting

Abstract

The invention relates to the technical field of paper shredders, in particular to a financial and accounting noise reduction paper shredder which comprises a shell, a horizontal partition plate, a paper shredding assembly, a noise reduction assembly, a damping assembly, a paper storage box and a paper full automatic power-off assembly, the paper shredding assembly is arranged at the upper end of the horizontal partition plate, and the paper storage box is arranged at the lower end of the horizontal partition plate; through the arrangement of the first cavity, the second cavity and the third cavity, sound waves are gradually weakened in the touch process of the inner walls of the cavities and the sound insulation plates, preliminary sound attenuation is conducted, the first sound attenuation holes and the second sound attenuation holes are perpendicular to each other, the sound waves are counteracted multiple times to weaken noise, then the noise is absorbed through the sound absorption cotton, and finally the good sound insulation effect is achieved. Vibration generated when the paper shredding assembly works is relieved through the damping assembly, noise generated by vibration is reduced, full-paper automatic power-off of the paper storage box is achieved through the full-paper automatic power-off assembly, the paper storage box and the shell are controlled to be automatically separated and connected, paper scraps are prevented from damaging a cutter, and fixed self-locking and taking-out of the paper storage box are facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of paper shredders, in particular to a financial accounting sound-absorbing paper shredder. Background Art

[0002] As people's living standards and living conditions continue to improve, they have higher requirements for the quality of office work, and paper shredders are becoming more and more intelligent. However, intelligent paper shredders produce a lot of noise when shredding paper, which interferes with people's normal work. Excessive noise can also seriously endanger people's health. Therefore, there is a need for an intelligent paper shredder with low noise for office use.

[0003] At present, the Chinese invention with application number 201811315417.1 discloses an office shredder. Although the noise generated by the shredder is reduced from the source through the combined effect of sound insulation cotton and the shock-absorbing device connected to the cutting work box, there are still problems such as the structure is not simple enough, the sound absorption effect is not ideal, and the waste paper scraps are too high to damage the cutter.

[0004] In addition, since financial work involves relatively important data, if paper is shredded due to mistakes or bills are mistakenly entered into the shredder, it will cause great losses. How to avoid this is also an urgent problem that needs to be solved. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the paper shredder generates a large noise when working, and when the shredded paper is full, it cannot be found in time, thereby damaging the cutter.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a financial accounting sound-absorbing shredder, which comprises a shell, a horizontal partition, a shredding assembly, a sound-absorbing assembly and a shock-absorbing assembly, wherein a horizontal partition is arranged in the middle of the inner wall of the shell, a shredding assembly is arranged at the upper end of the horizontal partition, and a paper storage box is arranged at the lower end of the horizontal partition;

[0007] The muffler assembly is arranged around the paper shredding assembly and includes a plurality of chambers. The inner wall and the bottom plate of the chamber are both provided with a plurality of through-type muffler holes, and the muffler holes of the inner wall and the bottom plate are perpendicular to each other;

[0008] The inner wall of the shell is fixedly connected with sound-absorbing cotton;

[0009] The bottom of the shock absorbing component is connected to the horizontal partition plate, and the top is connected to the paper shredding component to buffer the vibration generated when the paper shredding component is working.

[0010] As a preferred solution of the present invention, the shredding assembly includes a reduction motor, a first shredding roller, a second shredding roller, a fixed frame and a fixed plate, the output shaft of the reduction motor is rotatably connected to the first shredding roller, the first shredding roller is meshedly connected to the second shredding roller, one end of the first shredding roller and the second shredding roller is rotatably connected to the first fixed plate, and the other end of the first shredding roller and the second shredding roller is rotatably connected to the second fixed plate.

[0011] As a preferred solution of the present invention, the muffler assembly comprises a conical tube, a first baffle, a second baffle and sound-absorbing cotton, the shell is fixedly connected to the conical tube, the conical tube is fixedly connected to the horizontal baffle, the shell, the horizontal baffle and the conical tube constitute a chamber structure and a channel, the chamber structure is divided into a first chamber, a second chamber and a third chamber by the first baffle and the second baffle, the horizontal baffle is provided with a through groove, the through groove is aligned with the channel, and the sound-absorbing cotton is fixedly connected to the inner wall of the shell;

[0012] The conical tube is provided with a first silencing hole, and the first partition, the second partition and the horizontal partition are provided with a second silencing hole, and the first silencing hole and the second silencing hole are perpendicular in direction.

[0013] As a preferred solution of the present invention, there are two groups of shock-absorbing components, one group of which is fixedly connected to the first fixed plate, and the other group of shock-absorbing components is fixedly connected to the second fixed plate. The shock-absorbing components include a bracket, a first telescopic member, a second telescopic member, a slide rail and a first spring. The first telescopic member and the second telescopic member have the same structure. The first telescopic member and the second telescopic member are symmetrically slidably connected to the slide rail. The slide rail is fixedly connected to the bottom end of the bracket, one end of the first spring is fixedly connected to the first telescopic member, and the other end of the first spring is fixedly connected to the second telescopic member.

[0014] As a preferred solution of the present invention, wherein: the first telescopic member includes a telescopic rod, a connecting rod, a first limit column, a second limit column, a sliding block and a second spring, one end of the telescopic rod is fixedly connected to the bracket, the other end of the telescopic rod is fixedly connected to the horizontal partition, the telescopic rod sleeve is provided with a second spring, the telescopic rod is provided with a first limit column, the connecting rod is provided with a limit hole, the sliding block is provided with a second limit column, one end of the connecting rod is rotatably connected to the telescopic rod through the limit column, and the other end of the connecting rod is rotatably connected to the sliding block through the second limit column.

[0015] As a preferred embodiment of the accounting-specific shredder described in the present invention, it also includes an automatic power-off component when the paper is full, and the automatic power-off component when the paper is full includes a moving iron core, a fixed iron core, a third spring and an electromagnet. The touch switch is electrically connected to the reduction motor, and the touch switch is electrically connected to the electromagnet. The paddle is rotatably connected to the limit rod, and one end of the limit rod is fixedly connected to the inner wall of the paper storage box. The paddle is rotatably connected to the limit rod, and the paddle is connected to the touch switch. One end of the third spring is fixedly connected to the moving iron core, and the other end of the third spring is fixedly connected to the fixed iron core. The moving iron core and the fixed iron core are arranged in the electromagnet, and a coil is arranged inside the electromagnet, and the moving iron core is engaged and connected to the paper storage box.

[0016] As a preferred solution of the present invention, a paper thickness sensor is provided near the feed port or the paper shredder assembly for real-time monitoring of the thickness of the paper or whether there is any paper entering; based on the identification of the presence of paper and thickness information, a signal is sent to the microprocessor to further start or adjust the motor speed.

[0017] As a preferred solution of the present invention, at least the front body of the shredder is also provided with a human body sensor component, preferably an infrared sensor and an ultrasonic sensor; the ultrasonic sensor determines whether there is an approaching object or creature, and the infrared sensor can further determine whether it is a human body through thermal information, so that the microprocessor sends control instruction information to the shredder component.

[0018] As a preferred embodiment of the present invention, wherein:

[0019] The microprocessor further includes the following control instructions:

[0020] When the paper thickness sensor detects the presence of paper, the human body sensor component is activated to detect the presence of a human body nearby;

[0021] If a human body is detected, the reduction motor is started and the motor speed is adjusted based on the paper thickness;

[0022] If no human body is detected, it will enter standby mode and emit a reminder sound and light.

[0023] As a preferred solution of the present invention, a paper material sensor is provided at the feed port of the shredder for real-time monitoring of the material of the paper. When non-paper material or special paper material is detected, the infrared sensing sensor can send a signal to the microcontroller, and the microcontroller can adjust the operating parameters of the shredder or issue a warning accordingly.

[0024] The beneficial effects of the present invention are as follows: by setting the first cavity, the second cavity and the third cavity, the sound waves are gradually weakened during the contact process between the inner wall of the cavity and the sound insulation board, and preliminary silencing is performed; the first silencing hole and the second silencing hole are perpendicular to each other, and the noise is reduced by multiple cancellation of the sound waves, and then absorbed by the sound-absorbing cotton, ultimately achieving a good sound insulation effect; the vibration generated by the shredding component during operation is mitigated by the shock-absorbing component, so that the shredding component can operate smoothly, reducing the noise generated by the vibration; the paper box is automatically powered off when it is full through the automatic power-off component, and the paper box is automatically separated and connected to the shell to prevent paper scraps from damaging the cutter, facilitating the fixing, self-locking and removal of the paper box; the sensor-linked microprocessor can reduce the amount of financial information accidentally entering the shredder, while controlling the shredding component of the shredder to reduce noise and vibration, and avoid overheating and overloading, thereby ensuring the safe operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall schematic diagram of an embodiment of the present disclosure;

[0026] Figure 2 It is a cross-sectional schematic diagram in an embodiment of the present disclosure;

[0027] Figure 3 is a schematic diagram of a paper shredding assembly in an embodiment of the present disclosure;

[0028] Figure 4 is a schematic diagram of a shock absorbing assembly in an embodiment of the present disclosure;

[0029] Figure 5 Schematic diagram of an electromagnet in an embodiment of the present disclosure.

[0030] Reference numerals: housing 1; feed port 101; chute 102; groove 103; box door 104; horizontal partition 2; shredding assembly 3; reduction motor 31; first shredding roller 32; second shredding roller 33; first fixing plate 34; second fixing plate 35; silencer assembly 4; tapered tube 41; first partition 42; second partition 43; sound-absorbing cotton 44; first chamber 431; second chamber 432; third chamber 433; through groove 21; first silencer hole 411; second silencer hole 412; shock-absorbing assembly 5; Bracket 51; first telescopic member 52; second telescopic member 53; slide rail 54; first spring 55; telescopic rod 521; connecting rod 522; first limiting column 523; second limiting column 524; slider 525; second spring 526; limiting hole 5221; paper storage box 6; card slot 61; protrusion 62; handle 63; paper full automatic power off component 7; touch switch 71; paddle 72; limiting rod 73; moving iron core 74; fixed iron core 75; third spring 76; electromagnet 77; coil 771; universal wheel 8. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0032] Reference Figure 1 - Figure 5 This embodiment provides a financial accounting silencer shredder, comprising a housing 1, a horizontal partition 2, a shredder assembly 3, a silencer assembly 4, a shock-absorbing assembly 5, a paper storage box 6, and a paper full automatic power-off assembly 7. The housing 1 is provided with a horizontal partition 2 in the middle of the inner wall, the shredder assembly 3 is provided at the upper end of the horizontal partition 2, and the paper storage box 6 is provided at the lower end of the horizontal partition 2;

[0033] The shredding assembly 3 includes a reduction motor 31, a first shredding roller 32, a second shredding roller 33, a fixing frame 34 and a fixing plate 35. The output shaft of the reduction motor 31 is rotatably connected to the first shredding roller 32. The first shredding roller 32 is meshedly connected to the second shredding roller 33. One end of the first shredding roller 32 and the second shredding roller 33 is rotatably connected to the first fixing plate 34. The other end of the first shredding roller 32 and the second shredding roller 33 is rotatably connected to the second fixing plate 35.

[0034] Specifically, in this embodiment, the reduction motor 31 can make the gear transmission smoother, reduce impact and vibration, and thus reduce noise by increasing the overlap of the gears. This is a prior art. The reduction motor 31 is started to drive the first shredding roller 32 to rotate, and the first shredding roller 32 drives the second shredding roller 33 to rotate. The first shredding roller 32 and the second shredding roller 33 engage and rotate to shred paper.

[0035] Reference Figure 2 The silencer assembly 4 includes a conical tube 41, a first partition 42, a second partition 43 and sound-absorbing cotton 44. The outer shell 1 is fixedly connected to the conical tube 41, and the conical tube 41 is fixedly connected to the horizontal partition 2. The outer shell 1, the horizontal partition 2 and the conical tube 41 constitute a chamber structure 45 and a channel 46. The chamber structure 45 is divided into a first chamber 431, a second chamber 432 and a third chamber 433 by the first partition 42 and the second partition 43. The horizontal partition 2 is provided with a through groove 21, and the through groove 21 is aligned with the channel 46. The sound-absorbing cotton 44 is fixedly connected to the inner wall of the outer shell 1.

[0036] Specifically, in this embodiment, according to the Helmholtz resonance theory, the sound waves are continuously weakened during the continuous collision with the inner walls of the first chamber 431, the second chamber 432 and the third chamber 433, and then absorbed by the sound-absorbing cotton 44, thereby achieving sound insulation. The through groove 21 is aligned with the channel 46 to facilitate the paper to fall into the paper storage box 6.

[0037] Reference Figure 2The conical tube 41 is provided with a first silencing hole 411, and the first partition plate 42, the second partition plate 43 and the horizontal partition plate 2 are provided with a second silencing hole 412, and the first silencing hole 411 and the second silencing hole 422 are perpendicular to each other.

[0038] Specifically, in this embodiment, when in use, the sound waves of the first muffler hole 411 and the sound waves of the second muffler hole 412 can offset and weaken each other.

[0039] The paper shredder further comprises a microcontroller (MCU), a sensor module, a motor drive module and a user interface module. The microcontroller (MCU) is electrically connected to the sensor module, the motor drive module and the user interface module respectively.

[0040] The microcontroller (not shown in the figure) is arranged in the housing and located at the bottom. The microcontroller is responsible for processing input signals from sensors, executing control algorithms, and controlling the operation of the reduction motor.

[0041] There are multiple sensor modules, including at least a human body sensor, a paper thickness sensor, a paper material sensor, and a temperature and load sensor.

[0042] Among them, a paper thickness sensor is equipped near the feed port 101 of the shredder or the shredding component 3 for real-time monitoring of the thickness of the paper. The paper thickness sensor can be a laser distance sensor or an ultrasonic sensor. The laser distance sensor uses a laser beam to measure the distance of the paper, while the ultrasonic sensor uses high-frequency sound waves to measure the distance of the paper. By measuring the time and energy of the laser beam or ultrasonic wave emitted by the sensor to reflect back, the thickness of the paper or whether there is any paper entering can be obtained. When the presence of paper is identified, a signal is sent to the microprocessor to further start the shredding operation; when thicker or harder paper is identified, the motor speed is automatically adjusted to increase the cutting force while maintaining low noise.

[0043] A human body sensor assembly is also provided on at least the front body of the shredder, preferably an infrared sensor and an ultrasonic sensor; the ultrasonic sensor determines whether there is an approaching object or creature, and the infrared sensor can further determine whether it is a human body through thermal information.

[0044] The microprocessor further includes the following control instructions:

[0045] When the paper thickness sensor detects the presence of paper, the human body sensor component is activated to detect the presence of a human body nearby;

[0046] If a human body is detected, the reduction motor 31 is started and the motor speed is adjusted based on the paper thickness;

[0047] If no human body is detected, it will enter standby mode and emit a reminder sound and light.

[0048] The above settings can reduce the number of financial documents accidentally entering the shredder.

[0049] In addition, a paper material sensor is provided at the feed port 101 of the shredder for real-time monitoring of the material of the paper. The paper material sensor may be an infrared sensor or a photoelectric sensor.

[0050] The infrared sensor can be installed at the feed port 101 of the shredder to monitor the material of the paper in real time by measuring the absorption and reflection characteristics of the paper to infrared rays. When non-paper materials or special paper materials are detected, the infrared sensor can send a signal to the microcontroller (MCU), and the microcontroller (MCU) can adjust the operating parameters of the shredder or issue a warning accordingly.

[0051] The photoelectric sensor can be installed at the feed port 101 of the shredder to perform non-contact detection of paper through photoelectric elements such as photodiodes. Papers of different materials have different absorption and reflection characteristics of light, and the material of the paper can be distinguished by measuring the change of the photoelectric signal. When non-paper materials or special paper materials are detected, the photoelectric sensor can send a signal to the microcontroller (MCU), and the microcontroller (MCU) can adjust the operating parameters of the shredder or issue a warning accordingly.

[0052] Temperature and load sensors can be installed near the reduction motor to monitor the operating temperature and load conditions of the reduction motor, prevent overheating and overloading, and ensure safe operation of the equipment.

[0053] The motor drive module uses an intelligent motor driver to adjust the speed and torque of the reduction motor according to the instructions of the microcontroller (MCU). The driver supports PWM modulation to achieve smooth speed control and low noise operation.

[0054] The user interface module provides an interface for users to interact with the device, usually including:

[0055] Display: Use LCD or LED to display the current working status, paper thickness, remaining paper scraps capacity and fault information, etc.

[0056] Control buttons or touch screen: allow the user to select different working modes (such as "quiet mode", "standard mode", "high efficiency mode") as well as manual operation.

[0057] Remote control interface: Connect to a smartphone or other device via Bluetooth or Wi-Fi, allowing the user to remotely monitor and control the shredder.

[0058] The control algorithm is used to achieve precise control of the shredder motor. Through reasonable mathematical modeling, parameter setting, and real-time feedback and adjustment, the shredder can accurately cut paper of different thicknesses and materials to achieve the purpose of noise reduction, as follows:

[0059] Data collection: The microcontroller regularly records sensor data (such as paper thickness, load conditions), motor operating status, and user operation records. Use non-volatile memory to save these historical data for subsequent analysis.

[0060] Pattern recognition: By analyzing the collected data, the system can identify the user's usage habits and preferences, such as identifying commonly used paper types, thicknesses, and suitable cutting speeds.

[0061] Algorithm optimization: Based on historical data, the control algorithm parameters are updated. For example, if the system finds that a certain thickness of paper is best cut at a certain speed, it can automatically adjust the operating parameters for that type of paper to improve work efficiency.

[0062] Feedback mechanism: After each operation, the system can provide feedback based on the actual effect (such as the degree of paper fragmentation and motor load) to further adjust subsequent parameter settings.

[0063] Reference Figure 3 and 4 There are two groups of shock absorbing components 5, one group of which is fixedly connected to the first fixed plate 34, and the other group of shock absorbing components 5 is fixedly connected to the second fixed plate 35. The shock absorbing components 5 include a bracket 51, a first telescopic member 52, a second telescopic member 53, a slide rail 54 and a first spring 55. The first telescopic member 52 and the second telescopic member 53 have the same structure. The first telescopic member 52 and the second telescopic member 53 are symmetrically slidably connected to the slide rail 54. The slide rail 54 is fixedly connected to the bottom end of the bracket 51. One end of the first spring 54 is fixedly connected to the first telescopic member 52, and the other end of the first spring 54 is fixedly connected to the second telescopic member 53.

[0064] Specifically, in this embodiment, when the shredder assembly 3 is in use, shaking will occur. The first telescopic member 52 and the second telescopic member 53 receive pressure and push the first spring 55 inward. The first spring 55 receives the thrust and performs a telescopic movement. The first spring 55 can return to its original state, thereby providing space for the shredder assembly 3 to buffer up and down, thereby reducing the noise generated by the vibration of the shredder assembly 3.

[0065] Reference Figure 4The first telescopic member 52 includes a telescopic rod 521, a connecting rod 522, a first limiting column 523, a second limiting column 534, a slider 525 and a second spring 526. One end of the telescopic rod 521 is fixedly connected to the bracket 51, and the other end of the telescopic rod 521 is fixedly connected to the horizontal partition 2. The telescopic rod 521 is sleeved with a second spring 526, and the telescopic rod 521 is provided with a first limiting column 523. The connecting rod 522 is provided with a limiting hole 5221, and the slider 525 is provided with a second limiting column 534. One end of the connecting rod 522 is rotatably connected to the telescopic rod 521 through the limiting column 523, and the other end of the connecting rod 522 is rotatably connected to the slider 525 through the second limiting column 534.

[0066] Specifically in this embodiment, the telescopic rod 521 pushes the connecting rod 522 downward under pressure, the connecting rod 522 pushes the slider 525, the telescopic rod 521 compresses the second spring 526 downward, and the two sliders 525 push the first spring 54 relative to each other. The first spring 54 and the second spring 526 can restore their original state after expansion and contraction, so that the shock absorbing assembly 5 can offset the load generated by the vibration of the paper assembly 3.

[0067] Reference Figure 2 and Figure 5 The paper full automatic power-off component 7 includes a touch switch 71, a paddle 72, a limit rod 73, a moving iron core 74, a fixed iron core 75, a third spring 76 and an electromagnet 77. The touch switch 71 is electrically connected to the reduction motor 31, and the touch switch 71 is electrically connected to the electromagnet 77. The paddle 72 is rotatably connected to the limit rod 73, and one end of the limit rod 73 is fixedly connected to the inner wall of the paper storage box 6. The paddle 72 is rotatably connected to the limit rod 73, and the paddle 72 is connected to the touch switch 71. One end of the third spring 76 is fixedly connected to the moving iron core, and the other end of the third spring 76 is fixedly connected to the fixed iron core 75. The moving iron core 74 and the fixed iron core 75 are arranged in the electromagnet 77. A coil 771 is arranged inside the electromagnet 77, and the moving iron core 74 is engaged and connected to the paper storage box 6.

[0068] Specifically, in this embodiment, when the device is powered on, the paddle 72 is in a suspended state, and the coil 771 of the electromagnet 77 is energized to generate a magnetic field, causing the moving iron core 74 to move upward, thereby jamming the paper storage box 6. When the paper storage box 6 is full of shredded paper, the shredded paper drives the paddle 72 to rotate and contact the touch switch 71, thereby cutting off the power of the device. When the power is cut off, the magnetic field disappears, the magnetism of the electromagnet 77 disappears, the moving iron block 75 is released and falls back into the inside of the electromagnet 77, so that the paper storage box 6 can be pulled out. After the paper scraps in the paper storage box 6 are cleared, there is no thrust from the shredded paper, the paddle 72 returns to the suspended state, and the device resumes power supply.

[0069] Reference Figure 2 and Figure 5A card slot 61 is provided in the middle of the paper storage box 6, the cross-sectional shape of the paddle 72 is a broken line, and one end of the moving iron core 74 is an inclined surface.

[0070] Specifically, in this embodiment, the paddle 72 is rotated by the thrust of the shredded paper, and when the paddle 72 rotates, it will hit the touch switch 71, thereby cutting off the power of the device. The card slot 61 of the paper storage box 6 can clamp the moving iron core 74 in one direction, thereby fixing the paper storage box 6.

[0071] Reference Figure 2 The bottom of the shell 1 is provided with a slide groove 102 and a groove 103, and the paper storage box 6 is provided with a slider 62.

[0072] Specifically in this embodiment, the paper storage box 6 can slide inside the shell 1.

[0073] Reference Figure 1 , and also includes four universal wheels 8, which are fixedly connected to the housing 1.

[0074] Specifically, in this embodiment, the provision of universal wheels facilitates the movement and fixation of the device.

[0075] Reference Figure 1 The shell 1 has a feeding port 101 at the top, a box door 104 at the front, and the paper storage box 6 has a handle 63 .

[0076] Specifically, in this embodiment, the door handle 63 is provided to facilitate taking out the paper storage box 6 so as to dispose of waste paper.

[0077] Working principle: When the shredder assembly 3 is in use, shaking and shredding noises will be generated. The first telescopic member 52 and the second telescopic member 53 will receive pressure and push the first spring 55 inward. The first spring 55 will perform telescopic movement under the thrust and the first spring 55 can return to its original state, thereby providing a buffering space for the shredder assembly 3 up and down, and reducing the noise generated by the vibration of the shredder assembly 3. The noise sound waves will be weakened during the continuous collision between the inner walls of the first chamber 431, the second chamber 432 and the third chamber 433, and then absorbed by the sound-absorbing cotton 44. The sound waves of the first silencer hole 411 and the second silencer hole 412 can offset and weaken each other, thereby To achieve sound insulation, when the device is powered on, the paddle 72 is in a suspended state, and the coil 771 of the electromagnet 77 is energized to generate a magnetic field, causing the moving iron core 74 to move upward, thereby jamming the paper storage box 6. When the paper storage box 6 is full of shredded paper, the shredded paper drives the paddle 72 to rotate and contact the touch switch 71, thereby cutting off the power of the device. When the power is cut off, the magnetic field disappears, the magnetism of the electromagnet 77 disappears, the moving iron block 75 is released and falls back into the inside of the electromagnet 77, so that the paper storage box 6 can be pulled out. After clearing the paper scraps from the paper storage box 6, there is no thrust from the shredded paper, the paddle 72 resumes the suspended state, and the device resumes power supply, which is convenient for fixing and removing the paper storage box 6.

[0078] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the present application in detail. It should be understood that the above description is only the specific implementation method of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A financial accounting silencing shredder, characterized by: The utility model comprises a shell (1), a horizontal partition (2), a paper shredding assembly (3), a noise-reducing assembly (4) and a shock-absorbing assembly (5); the shell (1) is provided with a horizontal partition (2) in the middle of the inner wall; the upper end of the horizontal partition (2) is provided with a paper shredding assembly (3); and the lower end of the horizontal partition (2) is provided with a paper storage box (6); The muffler assembly (4) is arranged around the paper shredding assembly (3), and comprises a plurality of chambers, wherein the inner wall and the bottom plate of the chamber are both provided with a plurality of through-type muffler holes, and the muffler holes of the inner wall and the bottom plate are perpendicular to each other; The inner wall of the shell (1) is fixedly connected with a sound-absorbing cotton (44); The bottom of the shock absorbing component (5) is connected to the horizontal partition (2), and the top is connected to the paper shredding component (3) to buffer the vibration generated when the paper shredding component (3) is working.

2. The paper shredder according to claim 1, characterized in that: The shredding assembly (3) comprises a reduction motor (31), a first shredding roller (32), a second shredding roller (33), a fixing frame (34) and a fixing plate (35); the output shaft of the reduction motor (31) is rotatably connected to the first shredding roller (32); the first shredding roller (32) is meshingly connected to the second shredding roller (33); one end of the first shredding roller (32) and the second shredding roller (33) is rotatably connected to the first fixing plate (34); the other end of the first shredding roller (32) and the second shredding roller (33) is rotatably connected to the second fixing plate (35).

3. The paper shredder according to claim 1, characterized in that: The muffler assembly (4) comprises a conical tube (41), a first partition (42), a second partition (43) and sound-absorbing cotton (44); the outer shell (1) is fixedly connected to the conical tube (41); the conical tube (41) is fixedly connected to the horizontal partition (2); the outer shell (1), the horizontal partition (2) and the conical tube (41) constitute a chamber structure (45) and a channel (46); the chamber structure (45) is divided into a first chamber (431), a second chamber (432) and a third chamber (433) by the first partition (42) and the second partition (43); the horizontal partition (2) is provided with a through groove (21), the through groove (21) is aligned with the channel (46); the sound-absorbing cotton (44) is fixedly connected to the inner wall of the outer shell (1); The conical tube (41) is provided with a first silencing hole (411), the first partition plate (42), the second partition plate (43) and the horizontal partition plate (2) are provided with a second silencing hole (412), and the first silencing hole (411) and the second silencing hole (422) are perpendicular to each other.

4. The paper shredder according to claim 1, characterized in that: The shock absorbing components (5) have two groups, one of which is fixedly connected to the first fixed plate (34), and the other is fixedly connected to the second fixed plate (35). The shock absorbing components (5) include a bracket (51), a first telescopic component (52), a second telescopic component (53), a slide rail (54) and a first spring (55). The first telescopic component (52) and the second telescopic component (53) have the same structure. The first telescopic component (52) and the second telescopic component (53) are symmetrically slidably connected to the slide rail (54). The slide rail (54) is fixedly connected to the bottom end of the bracket (51). One end of the first spring (54) is fixedly connected to the first telescopic component (52), and the other end of the first spring (54) is fixedly connected to the second telescopic component (53).

5. The paper shredder according to claim 4, characterized in that: The first telescopic member (52) comprises a telescopic rod (521), a connecting rod (522), a first limiting column (523), a second limiting column (534), a sliding block (525) and a second spring (526); one end of the telescopic rod (521) is fixedly connected to the bracket (51); the other end of the telescopic rod (521) is fixedly connected to the horizontal partition (2); the telescopic rod (521) is sleeved with a second spring (526); the telescopic rod (521) is provided with a first limiting column (523); the connecting rod (522) is provided with a limiting hole (5221); the sliding block (525) is provided with a second limiting column (534); one end of the connecting rod (522) is rotatably connected to the telescopic rod (521) through the limiting column (523); the other end of the connecting rod (522) is rotatably connected to the sliding block (525) through the second limiting column (534).

6. The paper shredder according to claim 1, characterized in that: The invention also comprises a paper full automatic power off assembly (7), wherein the paper full automatic power off assembly (7) comprises a touch switch (71), a paddle (72), a limit rod (73), a moving iron core (74), a fixed iron core (75), a third spring (76) and an electromagnet (77), wherein the touch switch (71) is electrically connected to the reduction motor (31), the touch switch (71) is electrically connected to the electromagnet (77), the paddle (72) is rotatably connected to the limit rod (73), and one end of the limit rod (73) is fixedly connected to the reduction motor (31). The paddle (72) is connected to the inner wall of the paper storage box (6), the paddle (72) is rotatably connected to the limit rod (73), the paddle (72) is connected to the contact switch (71), one end of the third spring (76) is fixedly connected to the moving iron core, and the other end of the third spring (76) is fixedly connected to the fixed iron core (75), the moving iron core (74) and the fixed iron core (75) are arranged in the electromagnet (77), a coil (771) is arranged inside the electromagnet (77), and the moving iron core (74) is engaged and connected to the paper storage box (6).

7. The paper shredder according to claims 1 and 6, characterized in that: The shredder's feed port (101) or the vicinity of the shredder assembly (3) is equipped with a paper thickness sensor for real-time monitoring of the thickness of the paper or whether there is any paper entering; based on the identification of the presence of paper and thickness information, a signal is sent to the microprocessor to further start or adjust the motor speed.

8. The paper shredder according to claim 5, characterized in that: At least the front body of the shredder is also provided with a human body sensor component, preferably an infrared sensor and an ultrasonic sensor; the ultrasonic sensor determines whether there is an approaching object or creature, and the infrared sensor can further determine whether it is a human body through thermal information, so that the microprocessor sends control instruction information to the shredder component (3).

9. The paper shredder according to claim 8, characterized in that: The microprocessor further includes the following control instructions: When the paper thickness sensor detects the presence of paper, the human body sensor component is activated to detect the presence of a human body nearby; If a human body is detected, the reduction motor (31) is started and the motor speed is adjusted based on the thickness of the paper; If no human body is detected, it will enter standby mode and emit a reminder sound and light.

10. The paper shredder according to claim 9, characterized in that: A paper material sensor is provided at the feed port (101) of the shredder for real-time monitoring of the material of the paper. When non-paper material or special paper material is detected, the infrared sensing sensor can send a signal to the microcontroller, and the microcontroller can adjust the operating parameters of the shredder or issue a warning accordingly.

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