Abstract
A paper scrap pushing structure of a paper shredder, having a paper pushing unit, with a spindle having a longitudinal axis, a spindle flap coupled along the longitudinal axis to the spindle; and a paddle pushing segment, coupled to the spindle flap. The spindle is arranged under a paper outlet of the paper shredder and is in linkage with a paper shredder cutter shaft through a synchronous transmission device. When the rotating shaft rotates, the rotating shaft drives the paddle pushing segment to move in the circumferential direction along with the spindle flap, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.
Claims
1. A paper scrap pushing structure of a paper shredder, comprising: a paper pushing unit, including a spindle having a longitudinal axis; a spindle flap coupled along the longitudinal axis to the spindle; and a paddle pushing segment, coupled to the spindle flap, wherein the spindle is arranged under a paper outlet of the paper shredder and is in linkage with a paper shredder cutter shaft through a synchronous transmission device, and wherein when the rotating shaft rotates, the rotating shaft drives the paddle pushing segment to move in the circumferential direction along with the spindle flap, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.
2. The paper scrap pushing structure of claim 1, wherein the spindle flap is integral with the spindle.
3. The paper scrap pushing structure of claim 1, wherein the paddle pushing segment is pinned to the spindle flap in a hinged arrangement.
4. The paper scrap pushing structure of claim 2, wherein the paddle pushing segment is pinned to the spindle flap in a hinged arrangement.
5. The paper scrap pushing structure of the paper shredder of claim 1, wherein at least one of the spindle, the spindle flap, or the paddle pushing segment is made of plastic, or of rubber, or of metal.
6. A paper scrap pushing structure of a paper shredder, comprising: a spindle having a longitudinal axis; a plurality of spindle flaps coupled to the spindle, spaced apart, and arranged in parallel to the longitudinal axis in the circumferential direction of the rotating shaft at intervals; and a plurality of paddle pushing segments, coupled to respective ones of the plurality of spindle flaps, wherein the spindle is arranged under a paper outlet of the paper shredder and is in linkage with a paper shredder cutter shaft through a synchronous transmission device, and wherein when the rotating shaft rotates, the rotating shaft drives the plurality of paddle pushing segments to move in the circumferential direction along with the spindle flap, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin.
7. The paper scrap pushing structure of claim 6, wherein the plurality of spindle flaps is integral with the spindle.
8. The paper scrap pushing structure of claim 6, wherein each of the paddle pushing segments is pinned to the spindle flap in a hinged arrangement.
9. The paper scrap pushing structure of claim 7, wherein each of the paddle pushing segments is pinned to the spindle flap in a hinged arrangement.
10. The paper scrap pushing structure of the paper shredder of claim 1, wherein at least one of the spindle, the plurality of spindle flaps, or the plurality of paddle pushing segments is made of plastic, or of rubber, or of metal.
11. The paper scrap pushing structure of the paper shredder of claim 1, wherein the synchronous transmission device includes a gear set, wherein two opposing ends of the rotating spindle are coupled to gear shafts arranged on the two sides of the paper shredder, and wherein the rotating spindle is in synchronous linkage with the paper shredder cutter shaft through engaging movement of gears in the gear set.
12. The paper scrap pushing structure of the paper shredder of claim 1, wherein the synchronous transmission device includes cutter shaft gears and rotating spindle gears, wherein the cutter shaft gears are arranged at two opposing ends of the paper shredder cutter shaft, wherein the rotating spindle gears are arranged at the two ends of the rotating spindle, and wherein the cutter shaft gears are in synchronous linkage with the rotating spindle gears through a synchronous belt.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] For a clearer illustration of the technical scheme of the embodiments of the embodiments, a brief description of the drawings required for illustration of the embodiment of the embodiments is given as follows. Obviously, the drawings in the following description are only for part of the embodiments of the embodiments, and for those skilled in the field, other drawings can also be obtained according to the drawings without creative work. In the drawings:
[0022] FIG. 1 is a structural diagram of a paper pushing unit in the paper scrap pushing structure of the paper shredder of the embodiments;
[0023] FIG. 2 is a diagram of the part and shape, at the paper outlet of the paper shredder, of the paper pushing unit in the paper scrap pushing structure of the paper shredder of the embodiments;
[0024] FIG. 3 is a structural diagram of the paper pushing unit in the paper scrap pushing structure of the paper shredder of the embodiments;
[0025] FIG. 4 is a structural diagram of a synchronous gear transmission device in the paper scrap pushing structure of the paper shredder of the embodiments;
[0026] FIG. 5 is a forward structural diagram of the telescopic paper pushing unit in the paper scrap pushing structure of the paper shredder of the embodiments;
[0027] FIG. 6 is an inverted structure diagram of the telescopic paper pushing unit in the paper scrap pushing structure of the paper shredder of the embodiments;
[0028] FIG. 7 is a forward structural diagram of plural telescopic paper pushing units in the paper scrap pushing structure of the paper shredder of the embodiments;
[0029] FIG. 8 is a structural diagram of a synchronous belt transmission device in the paper scrap pushing structure of the paper shredder of the embodiments;
[0030] FIG. 9 is a structural diagram of a segmented paper pushing unit in the paper scrap pushing structure of the paper shredder of the embodiments;
[0031] FIG. 10A is an exploded structural illustration of the segmented paper pushing unit of FIG. 9, in accordance with the teachings of the embodiments;
[0032] FIG. 10B is a perspective joined structural illustration of the exploded segmented paper pushing unit of FIG. 10A;
[0033] FIG. 11A is a structural illustration of the segmented paper pushing unit of FIG. 10, having a paddle pushing segment disposed in a first rotated position in accordance with the teachings of the embodiments;
[0034] FIG. 11B is a structural illustration of the segmented paper pushing unit of FIG. 10, having the paddle pushing segment disposed in a non-rotated position in accordance with the teachings of the embodiments; and
[0035] FIG. 11C is a structural illustration of the segmented paper pushing unit of FIG. 10, having the paddle pushing segment disposed in a second rotated position in accordance with the teachings of the embodiments.
[0036] Some embodiments are described in detail with reference to the related drawings. Additional embodiments, features and/or advantages will become apparent from the ensuing description or may be learned by practicing the invention. In the figures, which are not drawn to scale, like numerals refer to like features throughout the description. The following description is not to be taken in a limiting sense, but is made merely for the purpose of describing the general principles of the invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0037] A clear and complete description and discussion of the technical scheme in the embodiments are given with the accompanying drawings as follows. Only several of the embodiments of the present invention are described, and all other embodiments obtained by those skilled in the field without creative work based on the embodiments are within the protected scope of the claims.
[0038] In general, when the paper shredder is in typical use, paper scraps generated after paper is shredded, fall down and form a paper scrap pile. When the paper scrap pile exceeds a certain height, the paper pushing units located below the paper outlet of the paper shredder can push the paper scraps at the top of the paper scrap pile to create a more even distribution of paper scraps in a shredder waste bin. The rotating gears and the cutter shaft gears of the paper shredder cutter shaft drive the paper pushing units, and the paper shredder cutter shaft, to rotate synchronously through the synchronous belt or through synchronized engagement of the gear set. As a result, the paper scraps are distributed orderly and can be evenly piled in the shredded paper waste bin, and thus the space utilization rate of the paper waste bin is effectively increased.
[0039] As is shown in FIGS. 1-6, the embodiments disclose a paper scrap pushing structure of a paper shredder having a rod configuration. The paper scrap pushing structure of the paper shredder includes rotating shaft 1, paper pushing rod 2, and plurality of connecting rods 3, in which rotating shaft 1 is arranged under a paper outlet of the paper shredder and is in linkage with a paper shredder cutter shaft 4 through a synchronous transmission device 9. Paper pushing rod 2 may be located on one side of the rotating shaft 1, arranged in parallel in the length direction of the rotating shaft 1, and connected with the rotating shaft 1 through plurality of connecting rods 3. In general, the distance from paper pushing rod 2 to rotating shaft 1 is smaller than the distance from the lowest portion of paper shredder cutter shaft 4 to rotating shaft 1. When rotating shaft 1 rotates, rotating shaft 1 drives paper pushing rod 2 to move in the circumferential direction through the connecting rods 3, removing paper scraps at the top of a paper scrap pile disposed in a shredded paper waste bin.
[0040] In an embodiment, the number of connecting rods 3 is two, the two connecting rods 3 being left connecting rod 31 and right connecting rod 32 respectively. Left connecting rod 31 and right connecting rod 32 can be located at the ends of paper pushing rod 2 and rotating shaft 1, respectively. To achieve the paper scrap distribution effect, the two connecting rods 31, 32 are simple in structure and reasonable in design, and materials can be saved. In an embodiment, the left connecting rod 31 and the right connecting rod 32 can be each of a telescopic structure, with springs 7 being arranged at the ends proximate to an end of the rotating shaft 1, and to left connecting rod 31 and right connecting rod 32.
[0041] As is shown in FIG. 3, FIG. 5 and FIG. 6, in another embodiment, the number of the connecting rods 3 can be three, the three connecting rods can be left connecting rod 31, middle connecting rod 33 and right connecting rod 32, respectively. Left connecting rod 31, middle connecting rod 33, and right connecting rod 32 can be arranged between the paper pushing rod 2 and rotating shaft 1, for example, at equal intervals. By arranging the connecting rods at equal intervals, force borne by paper pushing rod 2 can be evenly distributed to the connecting rods 3 when paper pushing rod 2 operates, and thus the service life can be prolonged. In the embodiment, the connecting rods 3 can be connected with paper pushing rod 2 and rotating shaft 1, for example, by insertion, by riveting, or by welding. In an embodiment, left connecting rod 31 and right connecting rod 32 can be each of a telescopic structure, and the middle connecting rod 33 can be of a sleeve structure. Springs 7 can be arranged proximate to each end of rotating shaft 1, and on left connecting rod 31 and right connecting rod 32. Middle connecting rod 33 can include an inner sleeve 41 and an outer sleeve 42. Inner sleeve 41 can be perpendicularly connected with the rotating shaft 1, and outer sleeve 42 can be perpendicularly connected with paper pushing rod 2. In another embodiment, inner sleeve 41 can be perpendicularly connected with paper pushing rod 2, and outer sleeve 42 can be perpendicularly connected with rotating shaft 1.
[0042] As is shown in FIG. 5 and FIG. 6, in another embodiment, the paper scrap pushing structure further includes two inverted U-shaped guide grooves 8 oppositely arranged on the inner walls of side plates 10 on the two opposing sides of the paper shredder. The radial angle (radian) of each inverted U-shaped guide groove 8 can be decreased gradually, and the distance from the portion with the smallest radian of each inverted U-shaped guide groove 8 to the center of rotating shaft 1 can be slightly greater than the distance from the side away from rotating shaft 1 of paper pushing rod 2 to the center of rotating shaft 1. Paper pushing rod 2 enters inverted U-shaped guide grooves 8 when rotating around rotating shaft 1 in the circumferential direction. Springs 7 of left connecting rod 31 and right connecting rod 32, and sleeves 41, 42 of middle connecting rod 33, are gradually compressed along with the decrement of the radians of inverted U-shaped guide grooves 8, so that paper pushing rod 2 is prevented from colliding with paper shredder cutter shaft 4 above. After paper pushing rod 2 passes through inverted U-shaped guide grooves 8, springs 7 return to their prior state. Through the design of springs 7, the distance between rotating shaft 1 and paper shredder cutter shaft 4 can be further decreased easily, the space of the shredder paper waste bin, below rotating shaft 1, of the paper shredder is effectively increased accordingly, the size of the paper shredder can be further decreased on the basis that the space of the shredded paper waste bin is not changed. The cost of the paper shredder and the space occupied by the paper shredder can be reduced indirectly.
[0043] In an embodiment, paper pushing rod 2 and plurality of connecting rods 3 can be formed integrally. Through the integral design, the firmness between the paper pushing rod and the connecting rods can be improved easily, and the paper pushing rod and the connecting rods are not prone to being separated after extended use. When rotating shaft 1, paper pushing rod 2, and connecting rods 3 are made of the same materials, rotating shaft 1, paper pushing rod 2, and connecting rods 3 can also be formed integrally.
[0044] Paper pushing unit 11 can include rotating shaft 1, paper pushing rod 2, and connecting rods 3. The number of paper pushing units 11 can be set freely and can be one or more. In embodiments, such as shown in FIG. 7, the number of paper pushing units 11 coupled to rotating shaft 1 is equal to or larger than two, and paper pushing units 11, 77 can be arranged at intervals in the circumferential direction of rotating shaft 1. For achieving a better paper scrap distribution effect, paper pushing units 11 can be arranged in the circumferential direction of the rotating shaft at equal intervals. In certain embodiments, the number of paper pushing units 11 can be plural, for example, two or four or six. FIG. 7 illustrates a second paper pushing unit 77 disposed on rotating shaft 1. However, it is not true that the more paper pushing units 11, 77 there are, the better the effect is; if excessive paper pushing units are provided, the material cost can be increased, the structure can more complex, and the paper scrap distribution efficiency may be low.
[0045] In embodiments, paper pushing rod 2, connecting rods 3, or both, can be made of plastic, or rubber, or metal. In an economical paper pushing device of a paper shredder, paper pushing rod 2 and connecting rods 3 preferably can be made of plastic, which is low in price and proper in hardness.
[0046] Rotating shaft 1 can be in linkage with paper shredder cutter shaft 4 in multiple ways. As is shown in FIG. 4, in one embodiment, synchronous transmission device 9 can be a gear set, the two ends of rotating shaft 1 can be connected with gear shafts arranged on the two sides of the paper shredder, and rotating shaft 1 can be in synchronous linkage with paper shredder cutter shaft 4 through engaging movement of gears in the gear set. In another embodiment, shown in FIG. 8, synchronous transmission device 9 includes cutter shaft gears 5 and rotating shaft gears 6. Cutter shaft gears 5 can be arranged at the two ends of paper shredder cutter shaft 4, rotating shaft gears 6 can be arranged at the two ends of rotating shaft 1, and cutter shaft gears 5 can be in synchronous linkage with rotating shaft gears 6 through synchronous belt 55.
[0047] Paper pushing unit 11 can be provided in multiple configurations. For example, paper pushing elements may be configured in a rod configuration or may be configured in a paddle configuration, in which the paper pushing element is characterized by a broad, flat blade. In addition to the foregoing embodiments of a non-segmented paper pushing unit 11 of FIGS. 1-8, paper pushing unit 22 may be segmented. FIG. 9 depicts shredder body 20 coupled by rotating shaft spindle 100 to segmented paper pushing unit 22, in a manner similar to the coupling of rotating shaft 1 to paper pushing unit 11 in FIGS. 1-6. FIG. 10A illustrates an exploded view of one possible configuration of a segmented paper pushing unit 22 in which rotating shaft spindle 100 may be joined to spindle flap 110, and which longitudinally extends in parallel with rotating shaft spindle 100. In this configuration, spindle flap 110 can be integrally joined with rotating shaft spindle 100, although such is not required and other manners of joining are possible. Spindle flap 110 may be configured to couple with hinged paddle pushing segment 120 using a hinge pin 115 on each side of spindle flap 110. As indicated by assembled illustration FIG. 10B, when retained by hinge pins 115, hinged paddle pushing segment 120 is generally capable of rotating around the longitudinal axis of rotating shaft spindle 100. By rotating, spindle flap 110 and hinged paddle pushing segment 120 can cause the distribution of paper scraps (not shown), which may have accumulated unevenly in the paper shredder waste basket (not shown) during paper shredder operation. As with the embodiments of FIG. 7, there may be two or more segmented paper pushing units 22 disposed on spindle 100, typically spaced equally apart on spindle 100.
[0048] FIGS. 11A-C illustrate segmented paper pushing unit 22 with hinged paddle pushing segment 120 disposed in a first rotated position, in an unrotated position, and in a second rotated position, respectively as spindle 100 is rotated upon its longitudinal axis. During rotation of spindle 100, hinged paddle pushing segment 120 can move relative to spindle flap 110. In some embodiments, paper pushing unit 22 rotates around spindle 100. In yet other embodiments, spindle 100 can oscillate, causing paper pushing unit 22 to operate in a back-and-forth sweeping manner.
[0049] The above embodiments are only preferred specific embodiments of the invention, the protection scope of the embodiments is not limited to the above embodiments, and changes or substitutes which can be easily obtained by those skilled in the field within the technical scope disclosed by the embodiments should all be within the protection scope of the embodiments. Therefore, the protection scope of the embodiments is subject to the protection scope defined by the claims.
