Portable special paper shredder for finance

Abstract

The invention belongs to the technical field of paper shredders, and particularly relates to a portable paper shredder special for finance, which comprises a double-roller type driving mechanism, synchronous adjusting type cutting mechanisms, a mechanical door opening and closing mechanism and a toggle type spacing adjusting mechanism, and the synchronous adjusting type cutting mechanisms are arranged on the double-roller type driving mechanism in an array. Through the adjustable large wheel assembly and the adjustable small wheel assembly which can adjust the width, the width of paper slips generated through preliminary crushing can be adjusted according to different working condition requirements; an elastic wing plate capable of elastically deforming is used as a bottom plate for secondary cutting, and a first shearing circular ring and a sharp corner cutting part can slide relative to the elastic wing plate when the elastic wing plate is used as the bottom plate for cutting by utilizing different linear speeds caused by different diameters of an adjustable large wheel assembly and an adjustable small wheel assembly; therefore, the paper shearing effect is optimized.

Description

Technical Field

[0001] The invention belongs to the technical field of paper shredders, and in particular relates to a portable special-purpose financial paper shredder. Background Art

[0002] A shredder is a device used to shred paper. Its main purpose is to prevent information leakage on important documents by breaking paper into small pieces. Current shredders mainly include large automatic shredders and portable small shredders. Portable shredders are further divided into electric and manual types. Electric shredders are more labor-saving, while manual shredders are lighter and smaller in size, and will not be unable to be used due to dead batteries. Both have their own advantages.

[0003] Generally speaking, the smaller the font size on the paper, the higher the degree of crushing required. If the crushing gears are made denser in one step due to some specific working conditions, the number of sliding contact surfaces and friction when the crushing teeth rotate will inevitably increase greatly, making manual drive very laborious.

[0004] Electric shredders generally have a door switch, and the motor can only be started after the storage box is correctly installed, thus avoiding the situation where the shredded paper is scattered everywhere and inconvenient to clean up when the storage box is not installed or installed loosely. For manual shredders, since there is no power supply, an independent locking switch is generally set, but since there is no relationship between the locking switch and the storage box, it is actually impossible to avoid the occurrence of the above-mentioned accidents. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art and to take into account both labor saving and the need for more fine shredding in individual cases, the present invention proposes a portable financial-specific paper shredder that can adjust the degree of shredding; through an adjustable large wheel assembly and an adjustable small wheel assembly that can adjust the width, the width of the paper strips produced by the initial shredding can be adjusted according to different working conditions; an elastic wing plate that can be elastically deformed is used as the bottom plate for secondary segmentation, and the different linear speeds of the adjustable large wheel assembly and the adjustable small wheel assembly due to their different diameters are utilized, so that the first shearing ring and the sharp-angle cutting part can slide relative to the elastic wing plate when cutting with the elastic wing plate as the bottom plate, thereby optimizing the shearing effect on the paper.

[0006] In order to solve the problem that manual paper shredders have no door switch, the present invention also creatively proposes a mechanical door switch mechanism. Through mechanical linkage, the sliding locking pin will slide out only when the storage box is correctly installed, thereby achieving the technical effect that the roller drive mechanism can only be allowed to rotate and work when the storage box is correctly installed.

[0007] The technical solution adopted by the present invention is as follows: The present invention proposes a portable financial-specific paper shredder, including a double-roller drive mechanism, a synchronously adjustable cutting mechanism, a mechanical door switch mechanism and a toggle-type spacing adjustment mechanism, wherein the synchronously adjustable cutting mechanism array is arranged on the double-roller drive mechanism, the mechanical door switch mechanism is arranged below the double-roller drive mechanism, and the toggle-type spacing adjustment mechanism is arranged above the double-roller drive mechanism.

[0008] Furthermore, the roller drive mechanism includes a rotation support assembly and a rotation drive assembly, and the rotation drive assembly is arranged on the rotation support assembly.

[0009] Through the transmission of the transmission gear, the two crushing rollers can rotate synchronously at the same speed and in opposite directions under the drive of the driving crank, thereby rotating with the synchronously adjustable cutting mechanism, thereby realizing the cutting and crushing of paper.

[0010] Preferably, the rotating support assembly comprises a frame bracket and a crushing roller, a cantilever plate portion is provided at one end of the frame bracket, a slide groove portion is provided on the cantilever plate portion, a spring bottom plate is provided under the slide groove portion, the crushing roller consists of a polygonal roller in the middle and circular shaft portions at both ends, the crushing roller is rotatably arranged in the frame bracket through the circular shaft portion, and two groups of crushing rollers are symmetrically arranged.

[0011] As a further preferred embodiment of the present invention, the rotary drive assembly includes a transmission gear, a gear cover and a driving crank, the transmission gear is fixedly connected to the circular shaft portion, the transmission gear is located above the cantilever plate portion, the gear cover is arranged on the cantilever plate portion, the transmission gear is located in the gear cover, and the driving crank is fixedly connected to one group of the circular shaft portions.

[0012] Furthermore, the synchronously adjustable cutting mechanism includes an adjustable large wheel assembly and an adjustable small wheel assembly, both of which are slidably arranged on the rotating support assembly, and the adjustable large wheel assembly and the adjustable small wheel assembly are alternately arranged.

[0013] The synchronously adjustable cutting mechanism consists of an adjustable large wheel assembly and an adjustable small wheel assembly. Since the adjustable large wheel assembly and the adjustable small wheel assembly are alternately arranged on the same crushing roller and relatively arranged on different crushing rollers, the paper can be cut into equally spaced paper strips at the junction of the adjustable large wheel assembly through the rotation of the adjustable large wheel assembly and the adjustable small wheel assembly, thereby completing the preliminary crushing.

[0014] Preferably, the adjustable large wheel assembly comprises a first large wheel, a second large wheel and a first spring, the first large wheel is slidably engaged on the polygonal roller through a polygonal hole in the center, a first shearing ring is provided on the side of the first large wheel away from the second large wheel, and arc-shaped cutting parts are evenly distributed on the circumferential surface of the first large wheel, the second large wheel is slidably engaged on the polygonal roller through a polygonal hole in the center, a second shearing ring is provided on the side of the second large wheel away from the first large wheel, and sharp-angle cutting parts are evenly distributed on the circumferential surface of the second large wheel, the sharp-angle cutting parts are slidably engaged in the arc-shaped cutting parts, the edge blades of the arc-shaped cutting parts and the sharp-angle cutting parts overlap, and the first spring is provided between the first large wheel and the second large wheel.

[0015] By changing the spacing between the first large wheel and the second large wheel, the overall thickness of the adjustable large wheel assembly can be adjusted, thereby adjusting the width of the shredded paper strips to meet the shredding requirements under different working conditions.

[0016] As a further preferred embodiment of the present invention, the adjustable wheel assembly includes a cutting wheel and a second spring. The cutting wheel is slidably engaged on the polygonal roller through a polygonal hole in the center. Elastic wing plates corresponding to the first shearing ring and the sharp-angle cutting part are evenly distributed on the circumferential surface of the cutting wheel. A countersunk groove is provided on the side of the cutting wheel close to the first large wheel, and the second spring is arranged between the bottom of the countersunk groove and the first large wheel.

[0017] By retracting the adjustable small wheel assembly as a whole toward the adjustable large wheel assembly, the actual effective width of the adjustable small wheel assembly can be adjusted to adapt to the width change of the adjustable large wheel assembly, and the secondary crushing of the initially crushed paper strips is achieved through the contact, extrusion and relative sliding between the first shearing ring and the sharp-angle cutting portion and the elastic wing plate.

[0018] The blades of the first shearing ring and the sharp-angle cutting part are located on the same straight line, that is, the total length of the blades of the first shearing ring and the sharp-angle cutting part changes with the change of the adjustable large wheel assembly. Therefore, effective cutting can be achieved when the width of the adjustable large wheel assembly changes.

[0019] Furthermore, the mechanical door switch mechanism includes a shredded paper storage assembly and an elastic locking assembly. The shredded paper storage assembly is arranged below the rotating support assembly, and the elastic locking assembly is slidably arranged on the rotating support assembly.

[0020] Preferably, the shredded paper storage assembly includes a storage box and an elastic lock. The storage box is detachably arranged at the bottom of the frame bracket. One end of the storage box is provided with a fixed lock that cooperates with the frame bracket. The elastic lock is arranged at the other end of the storage box. The elastic end of the elastic lock is provided with a triangular locking portion.

[0021] Through the elastic deformation of the elastic lock buckle and the blocking of the triangular locking part, a stable connection between the frame bracket and the storage box can be achieved after the storage box is installed. And through the top support of the triangular locking part, the elastic locking assembly can be pushed to complete the unlocking when the storage box is correctly installed.

[0022] As a further preferred embodiment of the present invention, the elastic locking assembly includes a sliding locking pin and a tension spring, the sliding locking pin is composed of a sliding portion, a locking head and a spring mounting portion, the locking head and the spring mounting portion are both arranged at the end of the sliding portion, the sliding portion is snap-fitted and slidably arranged in the slide groove portion, and the tension spring is arranged between the spring mounting portion and the spring base plate.

[0023] When the storage box is correctly installed, the triangular locking portion can push the sliding locking pin to slide as a whole, so that the locking head slides out from between the teeth of the transmission gear, thereby completing the unlocking of the double-roller drive mechanism. When the storage box is not correctly installed, the double-roller drive mechanism remains in a locked state, thereby realizing a function similar to the door switch on a large paper shredder.

[0024] Furthermore, the toggle-type spacing adjustment mechanism includes a top cover, a sliding adjustment component and a rotating locking component. The top cover is detachably arranged above the frame bracket. The top cover is provided with a sloped paper inlet. The sliding adjustment component is engaged and slidably arranged in the sloped paper inlet. The rotating locking component is arranged on the sliding adjustment component.

[0025] Preferably, the sliding adjustment assembly includes a sliding trapezoidal block and a sliding fork, the sliding trapezoidal block is snap-fitted and slidably arranged in the sloped paper inlet, the sliding fork is fixed to the bottom of the sliding trapezoidal block, and the overall length of the synchronous adjustment type cutting mechanism can be adjusted by sliding the sliding fork, and a stud portion is provided on the top of the sliding trapezoidal block.

[0026] Through the lateral sliding of the sliding fork, the effective widths of the adjustable large wheel assembly and the adjustable small wheel assembly can be evenly adjusted through the compression and rebound of the first spring and the second spring; since the adjustable large wheel assembly and the adjustable small wheel assembly are alternately arranged on the same crushing roller and relatively arranged on different crushing rollers, that is to say, each group of adjustable large wheel assemblies is cross-distributed, the gap between the adjustable large wheel assemblies on the same crushing roller must be able to be filled by the effective width of the adjustable small wheel assembly; therefore, in the process of sliding of the sliding fork, both the uniform change of the cutting spacing and the good cutting effect can be maintained.

[0027] As a further preferred embodiment of the present invention, the rotary locking assembly includes a locking pressure plate and a nut handle, the stud portion passes through the locking pressure plate, the locking pressure plate is placed on the top cover, the locking pressure plate is located between the sliding trapezoidal block and the nut handle, and the nut handle and the stud portion are threadedly connected.

[0028] By rotating the nut handle, the squeezing force and friction force between the locking pressure plate and the top cover can be changed, thereby controlling the release sliding and locking fixation of the sliding adjustment component.

[0029] The beneficial effects achieved by the present invention using the above structure are as follows: (1) Through the transmission of the transmission gear, the two crushing rollers can rotate synchronously at the same speed and in opposite directions under the drive of the driving crank, thereby rotating with the synchronously adjustable cutting mechanism, thereby achieving cutting and crushing of paper.

[0030] (2) The synchronously adjustable cutting mechanism consists of an adjustable large wheel assembly and an adjustable small wheel assembly. Since the adjustable large wheel assembly and the adjustable small wheel assembly are alternately arranged on the same crushing roller and relatively arranged on different crushing rollers, the paper can be cut into equally spaced paper strips at the junction of the adjustable large wheel assembly through the rotation of the adjustable large wheel assembly and the adjustable small wheel assembly, thereby completing the initial crushing.

[0031] (3) By changing the spacing between the first large wheel and the second large wheel, the overall thickness of the adjustable large wheel assembly can be adjusted, thereby adjusting the width of the shredded paper strips to suit the shredding requirements under different working conditions.

[0032] (4) By retracting the adjustable small wheel assembly as a whole toward the adjustable large wheel assembly, the actual effective width of the adjustable small wheel assembly can be adjusted to adapt to the width change of the adjustable large wheel assembly. By the contact, extrusion and relative sliding between the first shearing ring and the sharp-angle cutting portion and the elastic wing plate, the secondary crushing of the initially crushed paper strip is achieved.

[0033] (5) The blades of the first shearing ring and the sharp-angle cutting portion are located on the same straight line, that is, the total length of the blades of the first shearing ring and the sharp-angle cutting portion changes with the change of the adjustable large wheel assembly. Therefore, effective cutting can be achieved when the width of the adjustable large wheel assembly changes.

[0034] (6) Through the elastic deformation of the elastic lock buckle and the blocking of the triangular locking part, a stable connection between the frame bracket and the storage box can be achieved after the storage box is installed. And through the top support of the triangular locking part, the elastic locking assembly can be pushed to complete unlocking when the storage box is correctly installed.

[0035] (7) When the material storage box is correctly installed, the triangular locking portion can push the sliding locking pin to slide as a whole, so that the locking head slides out from between the teeth of the transmission gear, thereby completing the unlocking of the roller drive mechanism. When the material storage box is not correctly installed, the roller drive mechanism remains in a locked state, thereby realizing a function similar to the door switch on a large paper shredder.

[0036] (8) By rotating the nut handle, the squeezing force and friction force between the locking pressure plate and the top cover can be changed, thereby controlling the release sliding and locking fixation of the sliding adjustment assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A three-dimensional diagram of a portable financial paper shredder proposed by the present invention; Figure 2 This is a front view of a portable financial paper shredder proposed by the present invention; Figure 3 This is a left view of a portable financial paper shredder proposed by the present invention; Figure 4 A top view of a portable financial paper shredder proposed by the present invention; Figure 5 for Figure 2 A cross-sectional view along the cutting line AA; Figure 6 for Figure 3 A cross-sectional view along the cutting line BB; Figure 7 for Figure 2 A cross-sectional view along the cutting line CC; Figure 8 This is an exploded schematic diagram of a portable financial paper shredder proposed by the present invention; Fig. 9 for Figure 5 A partial enlarged view of point Ⅰ in the middle; Fig.10 for Figure 6 A partial enlarged view of the middle II; Fig.11 for Figure 5 A partial enlarged view of the middle part III; Fig.12 for Figure 8 A partial enlarged view of point IV in the middle.

[0038] Among them, 1. Roller drive mechanism, 2. Synchronous adjustment cutting mechanism, 3. Mechanical door switch mechanism, 4. Toggle spacing adjustment mechanism, 5. Rotary support assembly, 6. Rotary drive assembly, 7. Frame bracket, 8. Crushing roller, 9. Transmission gear, 10. Gear cover, 11. Driving crank, 12. Cantilever plate, 13. Slide groove, 14. Spring bottom plate, 15. Polygonal roller, 16. Circular shaft, 17. Adjustable large wheel assembly, 18. Adjustable small wheel assembly, 19. First large wheel, 20. Second large wheel, 21. First spring, 22. Cutting small wheel, 23. Second spring, 24. Arc cutting part , 25. First shearing ring, 26. Second shearing ring, 27. Sharp-angle cutting part, 28. Countersunk groove, 29. Elastic wing plate, 30. Shredded paper storage assembly, 31. Elastic locking assembly, 32. Storage box, 33. Elastic lock buckle, 34. Sliding locking pin, 35. Tension spring, 36. Fixed lock buckle, 37. Triangular locking part, 38. Sliding part, 39. Locking head, 40. Spring mounting part, 41. Top cover, 42. Sliding adjustment assembly, 43. Rotary locking assembly, 44. Slope paper inlet, 45. Sliding trapezoidal block, 46. Sliding fork, 47. Locking pressure plate, 48. Nut handle, 49. Stud part.

[0039] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0042] like Figure 1 to Figure 12As shown, the present invention proposes a portable special-purpose financial paper shredder, comprising a double-roller driving mechanism 1, a synchronously adjustable cutting mechanism 2, a mechanical door switch mechanism 3 and a toggle-type spacing adjustment mechanism 4, wherein the synchronously adjustable cutting mechanism 2 is arranged in an array on the double-roller driving mechanism 1, the mechanical door switch mechanism 3 is arranged below the double-roller driving mechanism 1, and the toggle-type spacing adjustment mechanism 4 is arranged above the double-roller driving mechanism 1.

[0043] The roller drive mechanism 1 includes a rotation support assembly 5 and a rotation drive assembly 6 , and the rotation drive assembly 6 is disposed on the rotation support assembly 5 .

[0044] Through the transmission of the transmission gear 9, the two crushing rollers 8 can be driven by the driving crank 11 to rotate synchronously at the same speed and in opposite directions, thereby driving the synchronously adjustable cutting mechanism 2 to rotate, thereby achieving cutting and crushing of paper.

[0045] The rotating support assembly 5 includes a frame bracket 7 and a crushing roller 8. A cantilever plate portion 12 is provided at one end of the frame bracket 7. A slide groove portion 13 is provided on the cantilever plate portion 12. A spring bottom plate 14 is provided below the slide groove portion 13. The crushing roller 8 consists of a polygonal roller 15 in the middle and circular shaft portions 16 at both ends. The crushing roller 8 is rotatably arranged in the frame bracket 7 through the circular shaft portion 16. Two groups of crushing rollers 8 are symmetrically arranged.

[0046] The rotary drive assembly 6 includes a transmission gear 9, a gear cover 10 and a driving crank 11. The transmission gear 9 is fixedly connected to the circular shaft portion 16. The transmission gear 9 is located above the cantilever plate portion 12. The gear cover 10 is arranged on the cantilever plate portion 12. The transmission gear 9 is located in the gear cover 10. The driving crank 11 is fixedly connected to one group of the circular shaft portions 16.

[0047] The synchronously adjustable cutting mechanism 2 includes an adjustable large wheel assembly 17 and an adjustable small wheel assembly 18. Both the adjustable large wheel assembly 17 and the adjustable small wheel assembly 18 are slidably disposed on the rotating support assembly 5. The adjustable large wheel assembly 17 and the adjustable small wheel assembly 18 are alternately disposed.

[0048] The synchronously adjustable cutting mechanism 2 is composed of an adjustable large wheel assembly 17 and an adjustable small wheel assembly 18. Since the adjustable large wheel assembly 17 and the adjustable small wheel assembly 18 are alternately arranged on the same crushing roller 8 and relatively arranged on different crushing rollers 8, the paper can be cut into equally spaced paper strips at the junction of the adjustable large wheel assembly 17 through the rotation of the adjustable large wheel assembly 17 and the adjustable small wheel assembly 18, thereby completing the preliminary crushing.

[0049] The adjustable large wheel assembly 17 includes a first large wheel 19, a second large wheel 20 and a first spring 21. The first large wheel 19 is slidably engaged on the polygonal roller 15 through a polygonal hole in the center. A first shearing ring 25 is provided on the side of the first large wheel 19 away from the second large wheel 20. Arc-shaped cutting parts 24 are evenly distributed in an annular manner on the circumferential surface of the first large wheel 19. The second large wheel 20 is slidably engaged on the polygonal roller 15 through a polygonal hole in the center. A second shearing ring 26 is provided on the side of the second large wheel 20 away from the first large wheel 19. Sharp-angle cutting parts 27 are evenly distributed in an annular manner on the circumferential surface of the second large wheel 20. The sharp-angle cutting parts 27 are engaged and slidably engaged in the arc-shaped cutting parts 24. The edge blades of the arc-shaped cutting parts 24 and the sharp-angle cutting parts 27 overlap. The first spring 21 is provided between the first large wheel 19 and the second large wheel 20.

[0050] By changing the spacing between the first large wheel 19 and the second large wheel 20, the overall thickness of the adjustable large wheel assembly 17 can be adjusted, thereby adjusting the width of the shredded paper strips to meet the shredding requirements under different working conditions.

[0051] The adjustable wheel assembly 18 includes a cutting wheel 22 and a second spring 23. The cutting wheel 22 is slidably engaged on the polygonal roller 15 through a polygonal hole in the center. Elastic wing plates 29 corresponding to the first shearing ring 25 and the sharp-angle cutting portion 27 are evenly distributed on the circumferential surface of the cutting wheel 22. A countersunk groove 28 is provided on one side of the cutting wheel 22 close to the first large wheel 19. The second spring 23 is arranged between the bottom of the countersunk groove 28 and the first large wheel 19.

[0052] By retracting the adjustable small wheel assembly 18 as a whole toward the adjustable large wheel assembly 17, the actual effective width of the adjustable small wheel assembly 18 can be adjusted to adapt to the width change of the adjustable large wheel assembly 17, and the secondary crushing of the initially crushed paper strips is achieved through the contact, squeezing and relative sliding between the first shearing ring 25 and the pointed cutting portion 27 and the elastic wing plate 29.

[0053] The blades of the first shearing ring 25 and the sharp-angled cutting portion 27 are located on the same straight line, that is, the total length of the blades of the first shearing ring 25 and the sharp-angled cutting portion 27 changes with the change of the adjustable large wheel assembly 17, so that effective cutting can be achieved when the width of the adjustable large wheel assembly 17 changes.

[0054] The toggle-type spacing adjustment mechanism 4 includes a top cover 41, a sliding adjustment component 42 and a rotating locking component 43. The top cover 41 is detachably arranged above the frame bracket 7. A sloped paper inlet 44 is provided on the top cover 41. The sliding adjustment component 42 is engaged and slidably arranged in the sloped paper inlet 44. The rotating locking component 43 is arranged on the sliding adjustment component 42.

[0055] The sliding adjustment assembly 42 includes a sliding trapezoidal block 45 and a sliding fork 46. The sliding trapezoidal block 45 is slidably engaged in the sloped paper inlet 44. The sliding fork 46 is fixed to the bottom of the sliding trapezoidal block 45. The overall length of the synchronous adjustment type cutting mechanism 2 can be adjusted by sliding the sliding fork 46. A stud portion 49 is provided on the top of the sliding trapezoidal block 45.

[0056] Through the lateral sliding of the sliding fork 46, the effective widths of the adjustable large wheel assembly 17 and the adjustable small wheel assembly 18 can be evenly adjusted through the compression and rebound of the first spring 21 and the second spring 23; since the adjustable large wheel assembly 17 and the adjustable small wheel assembly 18 are alternately arranged on the same crushing roller 8 and relatively arranged on different crushing rollers 8, that is to say, each group of adjustable large wheel assemblies 17 is cross-distributed, the gap between the adjustable large wheel assemblies 17 on the same crushing roller 8 must be able to be filled by the effective width of the adjustable small wheel assembly 18; therefore, in the process of sliding of the sliding fork 46, both the uniform change of the cutting spacing can be guaranteed and the good cutting effect can be maintained.

[0057] The rotation locking assembly 43 includes a locking pressure plate 47 and a nut handle 48. The stud portion 49 passes through the locking pressure plate 47. The locking pressure plate 47 is placed on the top cover 41. The locking pressure plate 47 is located between the sliding trapezoidal block 45 and the nut handle 48. The nut handle 48 and the stud portion 49 are threadedly connected.

[0058] By rotating the nut handle 48 , the squeezing force and the friction force between the locking pressure plate 47 and the top cover 41 can be changed, thereby controlling the release sliding and locking fixation of the sliding adjustment assembly 42 .

[0059] The mechanical door switch mechanism 3 includes a shredded paper storage assembly 30 and an elastic locking assembly 31 . The shredded paper storage assembly 30 is arranged below the rotating support assembly 5 , and the elastic locking assembly 31 is slidably arranged on the rotating support assembly 5 .

[0060] The shredded paper storage assembly 30 includes a storage box 32 and an elastic lock 33. The storage box 32 is detachably arranged at the bottom of the frame bracket 7. One end of the storage box 32 is provided with a fixed lock 36 that cooperates with the frame bracket 7. The elastic lock 33 is arranged at the other end of the storage box 32. The elastic end of the elastic lock 33 is provided with a triangular locking portion 37.

[0061] Through the elastic deformation of the elastic lock buckle 33 and the blocking of the triangular locking part 37, a stable connection between the frame bracket 7 and the storage box 32 can be achieved after the storage box 32 is installed. And through the support of the triangular locking part 37, the elastic locking assembly 31 can be pushed to complete the unlocking when the storage box 32 is correctly installed.

[0062] The elastic locking assembly 31 includes a sliding locking pin 34 and a tension spring 35. The sliding locking pin 34 is composed of a sliding portion 38, a locking head 39 and a spring mounting portion 40. The locking head 39 and the spring mounting portion 40 are both arranged at the ends of the sliding portion 38. The sliding portion 38 is engaged and slidably arranged in the slide groove portion 13. The tension spring 35 is arranged between the spring mounting portion 40 and the spring base plate 14.

[0063] When the storage box 32 is correctly installed, the triangular locking portion 37 can push the sliding locking pin 34 to slide as a whole, so that the locking head 39 slides out from between the teeth of the transmission gear 9, thereby completing the unlocking of the roller drive mechanism 1. When the storage box 32 is not correctly installed, the roller drive mechanism 1 remains in a locked state, thereby realizing a function similar to that of a door switch on a large paper shredder.

[0064] During specific use, the user first needs to insert the fixed lock buckle 36 of the storage box 32 into the notch of the frame bracket 7, and then complete the fixed connection between the frame bracket 7 and the storage box 32 by rotation; the triangular locking portion 37 can be sent to the top of the cantilever plate portion 12 through the elastic deformation of the elastic lock buckle 33 and the slope of the triangular locking portion 37, and then after the elastic lock buckle 33 rebounds, the triangular locking portion 37 can no longer be removed from the notch of the cantilever plate portion 12, thereby completing the connection between the frame bracket 7 and the storage box 32.

[0065] After the storage box 32 is installed, the triangular locking part 37 will support the sliding part 38 to make the sliding locking pin 34 slide outward as a whole. At this time, the tension spring 35 is stretched and stores elastic potential energy. After the locking head 39 slides out from the tooth tip of the crushing roller 8, it will contact the locking of the transmission gear 9.

[0066] Then, the paper to be shredded is inserted into the top cover 41 through the slope paper inlet 44 and contacts the synchronous adjustable cutting mechanism 2, and then the two shredding rollers 8 are rotated at the same speed and in opposite directions by rotating the crank 11; since the adjustable large wheel assembly 17 and the adjustable small wheel assembly 18 are alternately arranged on the same shredding roller 8 and arranged relatively on different shredding rollers 8, that is, each group of adjustable large wheel assemblies 17 is cross-distributed, the paper can be cut into thin paper strips by the first shearing ring 25 and the second shearing ring 26 that are in close contact and move relatively, thereby completing the preliminary shredding; Since the blades of the first shearing ring 25 and the sharp-angled cutting part 27 are located on the same straight line, and the number of the blades is equal to the number of the elastic wing plates 29, the first shearing ring 25 and the sharp-angled cutting part 27 will be in contact with the elastic wing plates 29 during rotation; since the rotation angular velocities of the two crushing rollers 8 are equal, and the diameters of the adjustable large wheel assembly 17 and the adjustable small wheel assembly 18 are different, the first shearing ring 25 and the sharp-angled cutting part 27 will produce relative slippage after contacting the elastic wing plates 29 due to the different linear velocities; specifically, the linear velocities of the first shearing ring 25 and the sharp-angled cutting part 27 are greater than the linear velocities of the elastic wing plates 29, so the thin paper strips can be divided into small paper pieces by the extrusion, cutting and downward movement of the first shearing ring 25 and the sharp-angled cutting part 27, thereby achieving the effect of crushing the paper.

[0067] When the width of the initial crushing needs to be adjusted, it is only necessary to loosen the nut handle 48, and then slide the sliding fork 46 with a lateral sliding manner, and then rotate and tighten the nut handle 48 after adjusting to a suitable position; When the sliding fork 46 slides laterally, the overall width of the synchronously adjustable cutting mechanism 2 can be changed. Since a first spring 21 is provided between the first large wheel 19 and the first spring 21, in the process of changing the overall width of the synchronously adjustable cutting mechanism 2, the widths of the various groups of adjustable large wheel assemblies 17 change synchronously and evenly. Moreover, since the various groups of adjustable large wheel assemblies 17 are cross-arranged, under the action of the second spring 23, the adjustable small wheel assembly 18 will automatically compensate for the gap between the adjustable large wheel assemblies 17 by the amplitude of its own retraction toward the first large wheel 19. Therefore, the effective width of the adjustable small wheel assembly 18 can always be equal to the width of the adjustable large wheel assembly 17.

[0068] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0069] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A portable financial paper shredder, characterized in that: The invention comprises a roller drive mechanism (1), a synchronously adjustable cutting mechanism (2), a mechanical door switch mechanism (3) and a toggle-type spacing adjustment mechanism (4), wherein the synchronously adjustable cutting mechanism (2) is arranged in an array on the roller drive mechanism (1), the mechanical door switch mechanism (3) is arranged below the roller drive mechanism (1), and the toggle-type spacing adjustment mechanism (4) is arranged above the roller drive mechanism (1); The roller drive mechanism (1) comprises a rotary support assembly (5) and a rotary drive assembly (6), wherein the rotary drive assembly (6) is arranged on the rotary support assembly (5); the synchronously adjustable cutting mechanism (2) comprises an adjustable large wheel assembly (17) and an adjustable small wheel assembly (18), wherein the adjustable large wheel assembly (17) and the adjustable small wheel assembly (18) are both slidably arranged on the rotary support assembly (5), and the adjustable large wheel assembly (17) and the adjustable small wheel assembly (18) are alternately arranged; the mechanical door switch mechanism (3) comprises a shredded paper storage assembly (30) and an elastic locking assembly (31), wherein the shredded paper storage assembly (30) is arranged below the rotary support assembly (5), and the elastic locking assembly (31) is slidably arranged on the rotary support assembly (5).

2. A portable financial paper shredder according to claim 1, characterized in that: The rotating support assembly (5) comprises a frame bracket (7) and a crushing roller (8); a cantilever plate portion (12) is provided at one end of the frame bracket (7); a slide groove portion (13) is provided on the cantilever plate portion (12); a spring bottom plate (14) is provided below the slide groove portion (13); the crushing roller (8) comprises a polygonal roller (15) in the middle and circular shaft portions (16) at both ends; the crushing roller (8) is rotatably arranged in the frame bracket (7) via the circular shaft portion (16); and two groups of crushing rollers (8) are symmetrically arranged.

3. A portable financial paper shredder according to claim 2, characterized in that: The rotary drive assembly (6) comprises a transmission gear (9), a gear cover (10) and a driving crank (11); the transmission gear (9) is fixedly connected to a circular shaft portion (16); the transmission gear (9) is located above a cantilever plate portion (12); the gear cover (10) is disposed on the cantilever plate portion (12); the transmission gear (9) is located in the gear cover (10); and the driving crank (11) is fixedly connected to one group of the circular shaft portions (16).

4. A portable financial paper shredder according to claim 3, characterized in that: The adjustable large wheel assembly (17) comprises a first large wheel (19), a second large wheel (20) and a first spring (21); the first large wheel (19) is slidably mounted on the polygonal roller (15) through a central polygonal hole; a first shearing ring (25) is provided on a side of the first large wheel (19) away from the second large wheel (20); arc-shaped cutting portions (24) are evenly distributed in annular shapes on the circumferential surface of the first large wheel (19); the second large wheel (20) is slidably mounted on the polygonal roller (15) through a central polygonal hole; The second large wheel (20) is provided on a polygonal roller (15), and a second shearing ring (26) is provided on a side of the second large wheel (20) away from the first large wheel (19). The second large wheel (20) is provided with sharp-angle cutting portions (27) evenly distributed in an annular manner on its circumferential surface. The sharp-angle cutting portions (27) are slidably engaged in the arc-shaped cutting portions (24). The edge blades of the arc-shaped cutting portions (24) and the sharp-angle cutting portions (27) overlap. The first spring (21) is provided between the first large wheel (19) and the second large wheel (20).

5. A portable financial paper shredder according to claim 4, characterized in that: The adjustable small wheel assembly (18) comprises a cutting small wheel (22) and a second spring (23). The cutting small wheel (22) is slidably mounted on the polygonal roller (15) through a central polygonal hole. The circumferential surface of the cutting small wheel (22) is evenly distributed with elastic wing plates (29) corresponding to the first shearing ring (25) and the sharp-angle cutting portion (27). A countersunk groove (28) is provided on one side of the cutting small wheel (22) close to the first large wheel (19). The second spring (23) is arranged between the bottom of the countersunk groove (28) and the first large wheel (19).

6. A portable financial paper shredder according to claim 5, characterized in that: The shredded paper storage assembly (30) comprises a storage box (32) and an elastic lock buckle (33); the storage box (32) is detachably arranged at the bottom of the frame bracket (7); one end of the storage box (32) is provided with a fixed lock buckle (36) that cooperates with the frame bracket (7); the elastic lock buckle (33) is arranged at the other end of the storage box (32); and a triangular locking portion (37) is provided at the elastic end of the elastic lock buckle (33).

7. A portable financial paper shredder according to claim 6, characterized in that: The elastic locking assembly (31) comprises a sliding locking pin (34) and a tension spring (35); the sliding locking pin (34) comprises a sliding portion (38), a locking head (39) and a spring mounting portion (40); the locking head (39) and the spring mounting portion (40) are both arranged at the ends of the sliding portion (38); the sliding portion (38) is slidably engaged in the sliding groove portion (13); and the tension spring (35) is arranged between the spring mounting portion (40) and the spring bottom plate (14).

8. A portable financial paper shredder according to claim 7, characterized in that: The toggle-type spacing adjustment mechanism (4) comprises a top cover (41), a sliding adjustment component (42) and a rotation locking component (43); the top cover (41) is detachably arranged above the frame bracket (7); a sloped paper inlet (44) is provided on the top cover (41); the sliding adjustment component (42) is engaged and slidably arranged in the sloped paper inlet (44); and the rotation locking component (43) is arranged on the sliding adjustment component (42).

9. A portable financial paper shredder according to claim 8, characterized in that: The sliding adjustment assembly (42) comprises a sliding trapezoidal block (45) and a sliding fork (46); the sliding trapezoidal block (45) is slidably engaged in the sloped paper inlet (44); the sliding fork (46) is fixed to the bottom of the sliding trapezoidal block (45); the overall length of the synchronous adjustment type cutting mechanism (2) can be adjusted by sliding the sliding fork (46); and a stud portion (49) is provided at the top of the sliding trapezoidal block (45).

10. A portable financial paper shredder according to claim 9, characterized in that: The rotation locking assembly (43) comprises a locking pressure plate (47) and a nut handle (48), the stud portion (49) passes through the locking pressure plate (47), the locking pressure plate (47) is placed on the top cover (41), the locking pressure plate (47) is located between the sliding trapezoidal block (45) and the nut handle (48), and the nut handle (48) and the stud portion (49) are threadedly connected.

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