Multifunctional office paper shredder capable of preventing paper jam

Abstract

The invention belongs to the technical field of paper shredders, and particularly discloses a paper jam prevention multifunctional office paper shredder which comprises a shell, the shell is of a hollow cuboid structure, an upper partition plate and a lower partition plate are fixedly installed on the inner wall of the shell, and the upper partition plate and the lower partition plate divide the inner space of the shell into three cavities; three cavities in the shell are sequentially an upper cavity, a middle cavity and a lower cavity from top to bottom, a crushing box is installed in the middle cavity of the shell and is of a hollow structure, and a box cover connected with the crushing box through bolts is arranged on the upper surface of the crushing box. According to the multifunctional office paper shredder capable of preventing paper jam, the first paper feeding plate is arranged in the shell to form a paper feeding channel aligned with the crushing box below, one side of the first paper feeding plate is connected with the second paper feeding plate to form the other paper feeding channel, and the first paper feeding plate and the second paper feeding plate guarantee that in the paper crushing process, the paper cannot be blocked in the paper crushing process; and the paper always enters the crushing roller one by one, so that paper jam is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of paper shredders, in particular to a multifunctional office paper shredder capable of preventing paper jams. Background Art

[0002] A shredder is an office device that can prevent the contents of documents from being leaked. A large amount of waste paper is generated during the office process. These waste papers record the company's business operations, and some even involve internal company secrets. Therefore, after use, a shredder should be used to shred the waste paper, cutting the paper into pieces or strips to achieve paper shredding. The shredded documents can prevent confidentiality leaks.

[0003] Current paper shredders usually use a motor to drive the cutter to rotate, and use the rotating cutter to shred the paper. However, current paper shredders cannot put too much paper in at one time, which will cause paper jams or damage the cutter. If one sheet is put in at a time, it will affect the paper shredding efficiency. In addition, the cutter part of current paper shredders is fixedly installed in the casing. After long-term use, the casing needs to be disassembled to clean the cutter, which affects the cleaning efficiency of the cutter. Summary of the invention

[0004] The object of the present invention is to provide a multifunctional office shredder that prevents paper jams, so as to solve the problem in the above-mentioned background technology that the shredder cannot put multiple papers at the same time, thus affecting the shredding efficiency.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multifunctional office shredder for preventing paper jams, comprising a shell, the shell being a hollow rectangular structure, an upper partition and a lower partition being fixedly installed on the inner wall of the shell, the upper partition and the lower partition dividing the space inside the shell into three chambers, the three chambers in the shell being an upper chamber, a middle chamber and a lower chamber from top to bottom, a crushing box being installed in the middle chamber of the shell, the crushing box being a hollow structure, a box cover connected by bolts being arranged on the upper surface of the crushing box, the interior of the crushing box being divided into two left and right chambers, two crushing rollers being rotatably installed in one of the chambers of the crushing box, square through holes being arranged on the upper and lower surfaces of the crushing box corresponding to the side chamber, the two crushing rollers being arranged on the left and right chambers, The rollers are arranged in parallel, one end of the crushing roller passes through the surface of the crushing box, a motor is fixedly installed in another chamber of the crushing box, the output end of the motor passes through the surface of the crushing box and is fixedly connected to a driving gear, one side of the driving gear is meshed with a transmission gear, the transmission gear is rotatably installed on the outer surface of the crushing box, the other side of the transmission gear is meshed with a driven gear, two driven gears are arranged, the two driven gears are meshed with each other, and the driven gears are respectively fixedly connected to the outer surface of one end of the crushing roller passing through the surface of the crushing box, a paper feeding structure is arranged in the upper chamber of the shell, the paper feeding structure can realize the paper feeding of a single paper and multiple papers at different positions during the crushing process, increase the paper crushing efficiency and prevent paper jams caused by excessive paper feeding;

[0006] Preferably, the paper feed structure includes a No. 1 paper feed board, which is a long plate-shaped structure, and the No. 1 paper feed board is fixedly installed in the upper chamber of the shell, and two No. 1 paper feed boards are arranged in parallel, and the upper ends of the two No. 1 paper feed boards penetrate the upper surface of the shell, and the lower ends of the two No. 1 paper feed boards penetrate the upper partition and are opposite to the opening on the upper surface of the crushing box, and the upper surface of the shell and the surface of the upper partition are respectively provided with square through holes, and the side surface of the No. 1 paper feed board is fixedly installed with a plurality of triangular protrusions, and the two No. 1 paper feed boards are connected by triangular protrusions. The blocks form a zigzag paper feed channel, wherein a side surface of the No. 1 paper feed paperboard is provided with a square notch, a No. 2 paper feed paperboard is fixedly installed on the side surface of the No. 1 paper feed paperboard, the No. 2 paper feed paperboard is a sloped structure, the other end of the No. 2 paper feed paperboard penetrates the side surface of the shell, the side surface of the shell is penetrated with a square through hole, a paper feed roller is provided above the No. 2 paper feed paperboard, one end of the paper feed roller is rotatably installed on the inner wall of the shell, and the other end of the paper feed roller is connected to a driving motor, and the driving motor connected to the paper feed roller is embedded and fixed on the surface of the shell.

[0007] By adopting the above technical solution, the No. 1 paper feeder and the No. 2 paper feeder can be used to shred a single paper and feed multiple papers separately.

[0008] Preferably, a group of long strip-shaped protrusions are arranged parallel to the lower surface of the crushing box, and the protrusions on the lower surface of the crushing box are slidably connected to the inner wall of the groove arranged on the upper surface of the lower partition plate, and the outer surface of the crushing box is provided with a protrusion, and the protruding surface of the crushing box is provided with a rectangular bayonet, and the protruding side of the crushing box passes through the middle chamber surface of the shell, and the middle chamber surface of the shell is provided with a square through hole, and the side surface of the shell is slidably connected with a baffle, the baffle is an inverted convex structure, and the lower end of the baffle is snap-connected in the rectangular bayonet of the crushing box, and the surface of the crushing box is provided with a power connection structure, which can realize that the power supply of the crushing box can be turned on only when the installation is completed, thereby improving the safety of the crushing process.

[0009] By adopting the above technical solution and utilizing the power connection structure, the safety of the crushing process can be improved.

[0010] Preferably, the power connection structure includes an electric contact No. 1, which is arranged on the surface of one side of the crushing box, and a No. 2 electric contact is arranged on the other side of the electric contact No. 1, which is arranged on the surface of the outer shell. The electric contact No. 1 is connected to the motor through a wire, and the No. 2 electric contact is connected to an external power supply. A rectangular block is arranged on the surface of one side of the electric contact No. 1 of the crushing box, and the block on the surface of the crushing box is engaged with a slot arranged on the inner wall of the outer shell.

[0011] By adopting the above technical solution, the connection and disconnection between the motor and the power supply can be achieved by utilizing the contact between the No. 1 electrical contact and the No. 2 electrical contact.

[0012] Preferably, a debris collection structure is provided in the lower chamber of the shell, and the debris collection structure can collect the crushed paper scraps and prevent the paper scraps from overflowing when the device is idle.

[0013] By adopting the above technical solution, the crushed paper scraps can be collected centrally using the scrap collection structure.

[0014] Preferably, the debris collection structure includes a paper receiving box, which is a box-shaped structure with an open upper surface. The paper receiving box is slidably installed in the lower chamber of the shell, and a partition block is fixedly installed on the inner wall of the paper receiving box. The lower surface of the partition block is suspended from the bottom surface of the paper receiving box, and the upper surface of the partition block is provided with an inverted bucket-shaped groove.

[0015] By adopting the above technical solution, the collected paper scraps can be laid flat by utilizing the inverted bucket-shaped grooves in the paper receiving box, thereby preventing the paper scraps from being locally piled up too high.

[0016] Preferably, an electric push rod is fixedly installed in the space formed by the paper receiving box and the lower surface of the partition block, the output end of the electric push rod passes through the surface of the partition block, and a driving rod is fixedly installed on the output end of the electric push rod.

[0017] By adopting the above technical solution, the electric push rod can be used to drive the driving rod to move to realize the driving process of the cover plate.

[0018] Preferably, a support bracket is fixedly mounted on the inner wall of the paper receiving box, and the support bracket is a circular ring structure connected by a cross-shaped bracket, and the support bracket is connected to the four corners of the inner wall of the paper receiving box, and a cover plate is rotatably mounted on the surface of the cross-shaped bracket of the support bracket, and the cover plate is a triangular structure, and there are 4 cover plates arranged in a ring, and the 4 cover plates completely cover the surface of the paper receiving box, and the bottom edge of the cover plate contacts the inner wall of the paper receiving box, and the top angle of the cover plate contacts the upper surface of the circular ring structure of the support bracket, and the top angle end of the cover plate is aligned with the driving rod, and a counterweight block is arranged on one side of the top angle of the cover plate, and the weight of one end of the top angle of the cover plate is greater than that of the bottom edge of the cover plate.

[0019] By adopting the above technical solution, the cover plate can be driven by the movement of the driving rod, thereby realizing the opening and closing of the paper receiving box.

[0020] Compared with the prior art, the invention has the following beneficial effects: the multifunctional office paper shredder for preventing paper jams:

[0021] 1. In the present invention, a No. 1 paper feeder is arranged in the housing to form a paper feed channel aligned with the crushing box below. A zigzag channel is arranged on the surface of the No. 1 paper feeder to ensure that the paper can smoothly enter the crushing box in the case of single paper feeding, and one side of the No. 1 paper feeder is connected to the No. 2 paper feeder to form another paper feed channel. A driving motor is arranged above the No. 2 paper feeder to drive a paper feed roller, so that multiple papers can be put into the No. 2 paper feeder at the same time. The rotating paper feed roller can make the stacked papers enter the crushing box in turn for crushing. The No. 1 paper feeder and the No. 2 paper feeder ensure that in the process of paper crushing, the paper always enters the crushing roller individually to avoid paper jam;

[0022] Furthermore, the crushing box is connected to the outer shell by sliding, and the crushing box and the outer shell are quickly engaged and fixed by using a baffle plate sliding on the outer surface of the outer shell. The sliding crushing box allows the crushing box to be pulled out of the outer shell during the maintenance of the device, thereby avoiding the need to disassemble the outer shell during the maintenance process and reducing additional operations during the maintenance process.

[0023] Furthermore, a No. 1 electrical contact is provided on the outer surface of the crushing box to connect with the motor, and correspondingly, a No. 2 electrical contact is provided on the inner wall of the shell to connect with the external power supply. When the crushing box is slid inwardly for installation, the No. 1 electrical contact contacts the No. 2 electrical contact to connect the motor with the power supply. When the crushing box is not installed in place, the motor cannot be connected with the power supply to start, thereby ensuring the safety of the device during use.

[0024] 2. In the present invention, a sliding receiving box is arranged inside the shell to collect the crushed paper scraps, and an inverted bucket-shaped partition block is arranged on the inner wall of the receiving box, so that the crushed paper scraps falling into the receiving box can fall to the bottom along the inclined partition block, thereby preventing the paper scraps from piling up too high in a certain area and causing the paper scraps to overflow;

[0025] Furthermore, a support frame is provided inside the paper receiving box, and the surface of the support frame is connected to a cover plate by rotation. The cover plate is used to cover the upper surface of the paper receiving box when the device is idle to prevent paper scraps from overflowing. After the device is started, an electric push rod is used to drive the driving rod upward to push one side of the cover plate to lift, thereby rotating the other side of the cover plate downward and separating it from the inner wall of the paper receiving box. The paper receiving box is opened to collect the paper scraps, and at the same time, the inclined cover plate cooperates with the partition block to evenly spread the paper scraps into the paper receiving box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the external structure of the housing of the present invention;

[0027] Figure 2 This is a schematic diagram of the paper receiving box and the shell structure of the present invention;

[0028] Figure 3 It is a schematic diagram of the side section structure of the housing of the present invention;

[0029] Figure 4 It is a schematic diagram of the rear view structure of the crushing box and the lower partition of the present invention;

[0030] Figure 5 This is a schematic diagram of the front view structure of the crushing box and the lower partition of the present invention;

[0031] Figure 6 This is a schematic diagram of the internal structure of the crushing box of the present invention;

[0032] Figure 7 This is a schematic diagram of the front cross-section structure of the paper receiving box of the present invention;

[0033] Figure 8 It is a schematic diagram of the cover plate rotation structure of the present invention.

[0034] In the figure: 1. outer shell; 2. upper partition; 3. lower partition; 4. crushing box; 5. crushing roller; 6. motor; 7. driving gear; 8. transmission gear; 9. driven gear; 10. paper feed paper No. 1; 11. paper feed paper No. 2; 12. paper feed roller; 13. baffle; 14. electric contact No. 1; 15. electric contact No. 2; 16. paper receiving box; 17. partition block; 18. electric push rod; 19. driving rod; 20. support bracket; 21. cover plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-Figure 8 The present invention provides a technical solution: a multifunctional office shredder for preventing paper jams, comprising a shell 1, an upper partition 2, a lower partition 3, a crushing box 4, a crushing roller 5, a motor 6, a driving gear 7, a transmission gear 8, a driven gear 9, a No. 1 paper feed board 10, a No. 2 paper feed board 11, a paper feeding roller 12, a baffle 13, a No. 1 electric contact 14, a No. 2 electric contact 15, a paper receiving box 16, a partition block 17, an electric push rod 18, a driving rod 19, a support frame 20, and a cover plate 21.

[0037] The outer shell 1 is a hollow rectangular parallelepiped structure, and an upper partition 2 and a lower partition 3 are fixedly installed on the inner wall of the outer shell 1. The upper partition 2 and the lower partition 3 divide the space inside the outer shell 1 into three chambers. The three chambers in the outer shell 1 are an upper chamber, a middle chamber and a lower chamber from top to bottom. A crushing box 4 is installed in the middle chamber of the outer shell 1. The crushing box 4 is a hollow structure. A box cover connected by bolts is arranged on the upper surface of the crushing box 4. The interior of the crushing box 4 is divided into two left and right chambers. Two crushing rollers 5 are rotatably installed in the chamber of one of the crushing boxes 4. The upper and lower surfaces of the crushing box 4 corresponding to the side chamber are respectively provided with A square through hole is arranged, two crushing rollers 5 are arranged in parallel, one end of the crushing roller 5 passes through the surface of the crushing box 4, a motor 6 is fixedly installed in the other chamber of the crushing box 4, the output end of the motor 6 passes through the surface of the crushing box 4 and is fixedly connected with a driving gear 7, one side of the driving gear 7 is meshed with a transmission gear 8, the transmission gear 8 is rotatably installed on the outer surface of the crushing box 4, the other side of the transmission gear 8 is meshed with a driven gear 9, two driven gears 9 are arranged, the two driven gears 9 are meshed with each other, and the driven gears 9 are respectively fixedly connected to the outer surface of one end of the crushing roller 5 passing through the surface of the crushing box 4;

[0038] like Figure 1 , Figure 2 and Figure 6As shown, when the device is used, the motor 6 is started, the motor 6 drives the driving gear 7 to rotate, the rotating driving gear 7 drives the transmission gear 8 to rotate, the rotating transmission gear 8 drives the driven gear 9 to rotate, the two driven gears 9 rotate relatively, the driven gear 9 drives the crushing roller 5 to rotate, the two crushing rollers 5 rotate relatively, the paper to be crushed is put into the shell 1, the paper goes downward into the crushing box 4, and enters the crushing box 4 from the square through hole on the upper surface of the crushing box 4. Under the action of the rotating crushing roller 5, the paper is crushed, and the crushed paper scraps fall from the through hole on the lower surface of the crushing box 4 to the paper receiving box 16 below for centralized collection.

[0039] A paper feeding structure is arranged in the upper chamber of the shell 1. The paper feeding structure can realize the feeding of a single paper and multiple papers at different positions during the shredding process, thereby increasing the paper shredding efficiency and preventing paper jams caused by excessive paper feeding. The paper feeding structure includes a No. 1 paper feeding board 10. The No. 1 paper feeding board 10 is a long plate-shaped structure. The No. 1 paper feeding board 10 is fixedly installed in the upper chamber of the shell 1. Two No. 1 paper feeding boards 10 are arranged in parallel. The upper ends of the two No. 1 paper feeding boards 10 penetrate the upper surface of the shell 1, and the lower ends of the two No. 1 paper feeding boards 10 penetrate the upper partition 2 and are opposite to the opening on the upper surface of the shredding box 4. The upper surface of the shell 1 and the surface of the upper partition 2 are respectively provided with square through holes. The side surface of the No. 1 paper feeding board 10 A plurality of triangular protrusions are fixedly installed on the surface, and a zigzag paper feeding channel is formed between two No. 1 paper feed boards 10 through the triangular protrusions, wherein a square notch is provided on the side surface of one No. 1 paper feed board 10, and a No. 2 paper feed board 11 is fixedly installed on the side surface of the No. 1 paper feed board 10, and the No. 2 paper feed board 11 is a slope structure, and the other end of the No. 2 paper feed board 11 penetrates the side surface of the shell 1, and the side surface of the shell 1 penetrates and is provided with a square through hole, and a paper feed roller 12 is provided above the No. 2 paper feed board 11, and one end of the paper feed roller 12 is rotatably installed on the inner wall of the shell 1, and the other end of the paper feed roller 12 is connected to a driving motor, and the driving motor connected to the paper feed roller 12 is embedded and fixed on the surface of the shell 1;

[0040] like Figure 3 As shown, when the number of shredded papers is small, the No. 1 paper feed board 10 can be selected to input a single paper, and the paper is input from the opening on the upper surface of the shell 1, so that the paper moves downward between the No. 1 paper feed board 10. Under the action of the zigzag paper feed channel between the No. 1 paper feed board 10, a single paper enters the inside of the crushing box 4 from the paper feed channel for shredding. When the number of papers is large, the papers are stacked on the surface of the No. 2 paper feed board 11 from the square through holes on the side surface of the shell 1, and the driving motor at one end of the paper feed roller 12 is started. The driving motor drives the paper feed roller 12 to rotate, and the rotating paper feed roller 12 feeds the stacked papers into the No. 1 paper feed board 10 in sequence, and enters the inside of the crushing box 4 for shredding, ensuring that during the shredding process, a single paper always enters the crushing box 4, avoiding a large amount of paper entering and causing paper jams.

[0041] A group of long strip-shaped protrusions are arranged in parallel on the lower surface of the crushing box 4. The protrusions on the lower surface of the crushing box 4 are slidably connected with the inner wall of the groove arranged on the upper surface of the lower partition 3. The outer surface of the crushing box 4 is provided with a protrusion. The protruding surface of the crushing box 4 is provided with a rectangular bayonet, and one side of the protrusion of the crushing box 4 passes through the surface of the middle chamber of the shell 1. The surface of the middle chamber of the shell 1 is provided with a square through hole. The side surface of the shell 1 is slidably connected with a baffle 13. The baffle 13 is an inverted convex structure, and the lower end of the baffle 13 is snap-fitted and connected in the rectangular bayonet of the crushing box 4. The surface of the crushing box 4 is provided with an electrical connection structure, which can It is possible to realize that the power supply can be turned on only when the crushing box 4 is installed, thereby improving the safety of the crushing process. The power connection structure includes a No. 1 electric contact 14, which is arranged on one side of the crushing box 4, and a No. 2 electric contact 15 is arranged on the other side of the No. 1 electric contact 14, and the No. 2 electric contact 15 is arranged on the surface of the shell 1, and the No. 1 electric contact 14 is connected to the motor 6 through a wire, and the No. 2 electric contact 15 is connected to an external power supply. A rectangular card block is arranged on one side of the No. 1 electric contact 14 of the crushing box 4, and the card block on the surface of the crushing box 4 is engaged with the card groove arranged on the inner wall of the shell 1;

[0042] like Figure 4 and Figure 5 As shown, when the crushing box 4 needs to be repaired and cleaned, the crushing box 4 is pulled out and pulled out from the inside of the shell 1, and the equipment in the crushing box 4 can be repaired and cleaned. After the cleaning is completed, the crushing box 4 is reinserted into the inside of the shell 1, so that the protrusion on the lower surface of the crushing box 4 is inserted into the groove set on the upper surface of the lower partition 3, and the crushing box 4 is pushed inward, so that the crushing box 4 moves toward the inside of the shell 1 until the rectangular block on the side surface of the crushing box 4 is engaged with the groove of the inner wall of the shell 1, and the baffle 13 is slid downward, and the lower end of the baffle 13 is inserted into the rectangular slot of the crushing box 4, so that the crushing box 4 is connected to the outside of the shell 1. At this time, the No. 1 electrical contact 14 on the surface of the crushing box 4 is in contact with the No. 2 electrical contact 15, so that the motor 6 is connected to the external power supply. When the crushing box 4 is not installed, the No. 1 electrical contact 14 is separated from the No. 2 electrical contact 15, and the motor 6 cannot be started at this time, thereby ensuring the safety of the device.

[0043] A debris collection structure is provided in the lower chamber of the shell 1. The debris collection structure can collect the broken paper scraps and prevent the paper scraps from overflowing when the device is idle. The debris collection structure includes a paper receiving box 16. The paper receiving box 16 is a box-shaped structure with an open upper surface. The paper receiving box 16 is slidably installed in the lower chamber of the shell 1. A partition block 17 is fixedly installed on the inner wall of the paper receiving box 16. The lower surface of the partition block 17 and the bottom surface of the paper receiving box 16 are suspended. The upper surface of the partition block 17 is provided with an inverted bucket-shaped groove. An electric push rod 18 is fixedly installed in the space formed by the lower surface of the paper receiving box 16 and the partition block 17. The output end of the electric push rod 18 passes through the surface of the partition block 17. The output end of the electric push rod 18 passes through the surface of the partition block 17. A driving rod 19 is fixedly installed at the end, and a supporting bracket 20 is fixedly installed on the inner wall of the paper receiving box 16. The supporting bracket 20 is a circular ring structure connected by a cross-shaped bracket. The supporting bracket 20 is connected to the four corners of the inner wall of the paper receiving box 16. A cover plate 21 is rotatably installed on the surface of the cross-shaped bracket of the supporting bracket 20. The cover plate 21 is a triangular structure. There are 4 cover plates 21 arranged in a ring. The 4 cover plates 21 completely cover the surface of the paper receiving box 16. The bottom edge of the cover plate 21 contacts the inner wall of the paper receiving box 16, and the top corner of the cover plate 21 contacts the upper surface of the circular ring structure of the supporting bracket 20, and the top corner end of the cover plate 21 is aligned with the driving rod 19. A counterweight block is arranged on one side of the top corner of the cover plate 21, and the weight of one end of the top corner of the cover plate 21 is greater than the bottom end of the cover plate 21;

[0044] like Figure 3 , Figure 7 and Figure 8 As shown, when the device is in use, the electric push rod 18 is started, and the electric push rod 18 drives the driving rod 19 to move upward, and the driving rod 19 pushes one side of the top corner of the cover plate 21 upward, so that one side of the top corner of the cover plate 21 rotates upward. At this time, the other side of the cover plate 21 rotates downward, and a gap is generated between the inner wall of the paper receiving box 16, and the paper crushed by the crushing roller 5 falls on the surface of the cover plate 21, and moves downward through the inclined cover plate 21 into the inverted bucket-shaped groove on the upper surface of the partition block 17. During the movement of the paper scraps, they slide on the inner wall of the inverted bucket-shaped groove and gather toward the center to prevent the paper scraps from accumulating in a certain area and causing the paper scraps to overflow. After the device is idle, the electric push rod 18 is started to drive the driving rod 19 to move downward. After the cover plate 21 loses the thrust of the driving rod 19, one side of the top corner of the cover plate 21 rotates downward under the action of the counterweight, driving the other side of the cover plate 21 to rotate upward, and the cover plate 21 returns to its original position to cover the surface of the paper receiving box 16 again.

[0045] Working principle: When using this device, start the electric push rod 18 to drive the driving rod 19 to move upward, and the driving rod 19 pushes the cover plate 21 upward to rotate, and a gap is generated between the rotating cover plate 21 and the inner wall of the paper receiving box 16, and the motor 6 is started. The motor 6 drives the transmission gear 8 to rotate by using the driving gear 7, thereby driving the driven gear 9 to rotate, and the rotating driven gear 9 drives the crushing roller 5 to rotate. When the number of crushed papers is small, the No. 1 feed paper board 10 can be selected to input a single paper. When the number of papers is large, the papers are stacked and placed on the surface of the No. 2 feed paper board 11, and the rotating feed paper board 11 is used to rotate the paper. The paper roller 12 feeds the paper into the crushing box 4 in sequence to avoid a large amount of paper entering and causing a paper jam. The crushing box 4 can be pulled out of the shell 1 for quick cleaning. After the cleaning is completed, the crushing box 4 is pushed inward until the block on the side surface of the crushing box 4 is engaged with the groove on the inner wall of the shell 1, and the baffle 13 is used to engage with the crushing box 4. At this time, the No. 1 electrical contact 14 on the surface of the crushing box 4 is in contact with the No. 2 electrical contact 15, so that the motor 6 is connected to the external power supply, and the crushed paper falls on the surface of the cover plate 21, and falls along the inclined cover plate 21 into the paper receiving box 16 below for centralized collection.

[0046] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A multifunctional office shredder for preventing paper jams, comprising a shell (1), the shell (1) being a hollow rectangular parallelepiped structure, an upper partition (2) and a lower partition (3) being fixedly mounted on the inner wall of the shell (1), the upper partition (2) and the lower partition (3) dividing the space inside the shell (1) into three chambers, the three chambers inside the shell (1) being an upper chamber, a middle chamber and a lower chamber from top to bottom, a crushing box (4) being mounted in the middle chamber of the shell (1), the crushing box (4) being a hollow structure, a box cover connected by bolts being arranged on the upper surface of the crushing box (4), the interior of the crushing box (4) being divided into two left and right chambers, one of the chambers of the crushing box (4) being rotatably mounted with two crushing rollers (5), the crushing box (5) corresponding to the side chamber being provided with a cover. 4) Square through holes are respectively arranged on the upper and lower surfaces, and the two crushing rollers (5) are arranged in parallel. One end of the crushing roller (5) passes through the surface of the crushing box (4). A motor (6) is fixedly installed in the other chamber of the crushing box (4). The output end of the motor (6) passes through the surface of the crushing box (4) and is fixedly connected to a driving gear (7). One side of the driving gear (7) is meshed with a transmission gear (8). The transmission gear (8) is rotatably installed on the outer surface of the crushing box (4). The other side of the transmission gear (8) is meshed with a driven gear (9). Two driven gears (9) are arranged, and the two driven gears (9) are meshed with each other. The driven gears (9) are respectively fixedly connected to the outer surface of one end of the crushing roller (5) passing through the surface of the crushing box (4). It is characterized in that: A paper feeding structure is arranged in the upper chamber of the housing (1), and the paper feeding structure can realize the feeding of a single paper or a plurality of papers at different positions during the shredding process, thereby increasing the paper shredding efficiency and preventing paper jams caused by excessive paper feeding.

2. The multifunctional office shredder for preventing paper jams according to claim 1, characterized in that: The paper feeding structure comprises a No. 1 paper feeding paperboard (10), the No. 1 paper feeding paperboard (10) is a long plate-shaped structure, the No. 1 paper feeding paperboard (10) is fixedly installed in the upper chamber of the shell (1), and two No. 1 paper feeding paperboards (10) are arranged in parallel, the upper ends of the two No. 1 paper feeding paperboards (10) penetrate the upper surface of the shell (1), and the lower ends of the two No. 1 paper feeding paperboards (10) penetrate the upper partition (2) and are opposite to the opening of the upper surface of the crushing box (4), the upper surface of the shell (1) and the surface of the upper partition (2) are respectively provided with square through holes, and the side surface of the No. 1 paper feeding paperboard (10) is fixedly installed with a plurality of triangular protrusions, and a space is formed between the two No. 1 paper feeding paperboards (10) through the triangular protrusions. A sawtooth-shaped paper feed passage, wherein a side surface of a first paper feed paperboard (10) is provided with a square notch, a second paper feed paperboard (11) is fixedly mounted on the side surface of the first paper feed paperboard (10), the second paper feed paperboard (11) is a slope-shaped structure, the other end of the second paper feed paperboard (11) penetrates the side surface of a shell (1), the side surface of the shell (1) is penetrated with a square through hole, a paper feed roller (12) is arranged above the second paper feed paperboard (11), one end of the paper feed roller (12) is rotatably mounted on the inner wall of the shell (1), and the other end of the paper feed roller (12) is connected to a driving motor, and the driving motor connected to the paper feed roller (12) is embedded and fixed on the surface of the shell (1).

3. The multifunctional office shredder with anti-paper jamming function according to claim 1, characterized in that: A group of long strip-shaped protrusions are arranged in parallel on the lower surface of the crushing box (4), and the protrusions on the lower surface of the crushing box (4) are slidably connected to the inner wall of the groove arranged on the upper surface of the lower partition (3). The outer surface of the crushing box (4) is provided with a protrusion, and the protruding surface of the crushing box (4) is provided with a rectangular bayonet, and the protruding side of the crushing box (4) passes through the surface of the middle chamber of the shell (1), and the surface of the middle chamber of the shell (1) is provided with a square through hole. The side surface of the shell (1) is slidably connected with a baffle (13), and the baffle (13) is an inverted convex structure, and the lower end of the baffle (13) is snap-connected in the rectangular bayonet of the crushing box (4). The surface of the crushing box (4) is provided with a power connection structure, and the power connection structure can realize that the crushing box (4) can only be turned on when the installation is completed, thereby improving the safety of the crushing process.

4. The multifunctional office paper shredder with anti-paper jamming function according to claim 3, characterized in that: The power connection structure comprises a first electric contact (14), the first electric contact (14) being arranged through one side surface of the crushing box (4), a second electric contact (15) being arranged correspondingly on the other side of the first electric contact (14), the second electric contact (15) being arranged through the surface of the outer shell (1), the first electric contact (14) being connected to the motor (6) via a wire, the second electric contact (15) being connected to an external power source, a rectangular card block being arranged on one side surface of the first electric contact (14) of the crushing box (4), the card block on the surface of the crushing box (4) being engaged and connected with a card groove arranged on the inner wall of the outer shell (1).

5. The multifunctional office paper shredder with anti-paper jamming function according to claim 1, characterized in that: A debris collection structure is provided in the lower chamber of the housing (1), and the debris collection structure can collect the crushed paper scraps while preventing the paper scraps from overflowing when the device is idle.

6. The multifunctional office paper shredder for preventing paper jams according to claim 5, characterized in that: The debris collection structure comprises a paper receiving box (16), which is a box-shaped structure with an open upper surface. The paper receiving box (16) is slidably mounted in the lower chamber of the outer shell (1), and a partition block (17) is fixedly mounted on the inner wall of the paper receiving box (16). The lower surface of the partition block (17) is suspended from the bottom surface of the paper receiving box (16), and the upper surface of the partition block (17) is provided with an inverted bucket-shaped groove.

7. The multifunctional office shredder for preventing paper jams according to claim 6, characterized in that: An electric push rod (18) is fixedly installed in the space formed by the paper receiving box (16) and the lower surface of the partition block (17), the output end of the electric push rod (18) passes through the surface of the partition block (17), and a driving rod (19) is fixedly installed at the output end of the electric push rod (18).

8. The multifunctional office shredder for preventing paper jams according to claim 6, characterized in that: A support frame (20) is fixedly mounted on the inner wall of the paper receiving box (16). The support frame (20) is a circular ring structure connected by a cross-shaped support. The support frame (20) is connected to the four corners of the inner wall of the paper receiving box (16). A cover plate (21) is rotatably mounted on the surface of the cross-shaped support of the support frame (20). The cover plate (21) is a triangular structure. Four cover plates (21) are arranged in an annular shape. The four cover plates (21) completely cover the surface of the paper receiving box (16). The bottom edge of the cover plate (21) contacts the inner wall of the paper receiving box (16). The top corner of the cover plate (21) contacts the upper surface of the circular ring structure of the support frame (20), and the top corner end of the cover plate (21) is aligned with the driving rod (19). A counterweight block is arranged on one side of the top corner of the cover plate (21). The weight of one end of the top corner of the cover plate (21) is greater than that of the bottom edge of the cover plate (21).

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