Paper scrap pushing structure of paper shredder

Abstract

A paper scrap pushing structure of a paper shredder, including a rotating shaft, a paper pushing rod, and connecting rods, in which the rotating shaft is arranged under a paper outlet, and is in linkage with a paper shredder cutter shaft through a synchronous transmission device. The paper pushing rod is located on one side of the rotating shaft, arranged in the length direction of the rotating shaft in parallel and connected with the rotating shaft through the connecting rods. The distance from the paper pushing rod to the rotating shaft is smaller than the distance from the lowest portion of the paper shredder cutter shaft to the rotating shaft. When rotating, the rotating shaft drives the paper pushing rod to move in a circumferential direction through the connecting rods, 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 having two opposing sides, comprising: a paper pushing unit, including a common rotating shaft, a paper pushing rod, arranged in the length direction of the common rotating shaft in parallel, and two connecting rods, connecting the common rotating shaft to the paper pushing rod; wherein the two connecting rods are the left connecting rod and the right connecting rod respectively, with the left connecting rod and the right connecting rod being located at respective ends of the paper pushing rod and the common rotating shaft, wherein the common rotating shaft 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, wherein the distance from the paper pushing rod to the common rotating shaft is smaller than the distance from the lowest portion of the paper shredder cutter shaft to the common rotating shaft, wherein the left connecting rod and the right connecting rod are each a telescopic structure, and springs are arranged proximate to respective ends of the common rotating shaft on the left connecting rod and the right connecting rod and wherein when the common rotating shaft rotates, the common rotating shaft drives the paper pushing rod to move in the circumferential direction through the connecting rods, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin and two inverted U-shaped guide grooves oppositely arranged on inner walls of side plates on the two opposing sides of the paper shredder, wherein the paper pushing rod enters the inverted U-shaped guide grooves when rotating around the common rotating shaft in the circumferential direction and is compressed to be prevented from colliding with the paper shredder cutter shaft above.

2. A paper scrap pushing structure, of a paper shredder having two opposing sides, comprising: a paper pushing unit, including a common rotating shaft; a paper pushing rod, arranged in the length direction of the common rotating shaft in parallel; and three connecting rods, connecting the common rotating shaft to the paper pushing rod, the three connecting rods being the left connecting rod, the middle connecting rod and the right connecting rod respectively, wherein the left connecting rod, the middle connecting rod, and the right connecting rod are arranged at equal intervals between the paper pushing rod and the common rotating shaft, wherein the common rotating shaft 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, wherein the distance from the paper pushing rod to the common rotating shaft is smaller than the distance from the lowest portion of the paper shredder cutter shaft to the common rotating shaft, and wherein when the common rotating shaft rotates, the common rotating shaft drives the paper pushing rod to move in the circumferential direction through the connecting rods, removing paper scraps at the top of a paper scrap pile in a shredded paper waste bin two inverted U-shaped guide grooves oppositely arranged on inner walls of side plates on the two opposing sides of the paper shredder, wherein the paper pushing rod enters the inverted U-shaped guide grooves when rotating around the common rotating shaft in the circumferential direction and is compressed to be prevented from colliding with the paper shredder cutter shaft above.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) For a clearer illustration of the technical scheme of the embodiments, a brief description of the drawings required for illustration of the embodiments is given as follows. Obviously, the drawings in the following description are only for part 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:

(2) FIG. 1 is a diagram of a paper pushing unit in the paper scrap pushing structure of the paper shredder of the embodiments;

(3) 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;

(4) FIG. 3 is a structural diagram of the paper pushing unit in the paper scrap pushing structure of the paper shredder of the embodiments;

(5) 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;

(6) 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;

(7) 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;

(8) 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, and

(9) 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.

(10) 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

(11) 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.

(12) 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.

(13) As is shown in FIGS. 1-6, the embodiments disclose a paper scrap pushing structure of a paper shredder. 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.

(14) 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 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.

(15) 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.

(16) 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.

(17) 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.

(18) Paper pushing unit 11 can include rotating shaft 1, paper pushing rod 2, and connecting rods 3. The number of paper pushing units it can be set freely and can be one or more. In embodiments, the number of paper pushing units 11 is equal to or larger than two, coupled to rotating shaft 1, and paper pushing units 11 can be arranged in the circumferential direction of the rotating shaft at intervals. 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 two or four or six. However, it is not true that the more paper pushing units 11 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.

(19) In the 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.

(20) 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, 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 a synchronous belt.

(21) The above embodiments are only preferred specific embodiments of the embodiments, 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.