Paper shredder and delay control mechanism thereof

Abstract

The utility model provides a paper shredder and a time-delay control mechanism thereof, the time-delay control mechanism comprises a time-delay seat, a touch switch, a time-delay rotating rod, a first time-delay gear and a second time-delay gear, the first time-delay gear and the second time-delay gear are a pair of meshed gears and are respectively connected with the time-delay rotating rod and a paper shredder cutter shaft; the time-delay rotating rod is rotatably arranged on the time-delay seat, a paper contact head and an induction contact which coaxially rotate with the time-delay rotating rod are arranged on the time-delay rotating rod, the paper contact head is pushed by paper entering the shredded paper inlet and rotates to drive the time-delay rotating rod, and the induction contact rotates along with the time-delay rotating rod to be close to the light touch switch and is in contact with the light touch switch; an elastic reset piece used for enabling the paper contact head to rotate reversely to restore the original position is arranged on the time delay base. The paper shredder is simple in structure, the purpose of controlling the paper shredder to cut and crush paper by conveying the paper is achieved, the crushing efficiency is high, the crushing effect is good, and the situation of paper jam is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of paper shredders, in particular to a paper shredder and a delay control mechanism thereof. BACKGROUND

[0002] In the prior art, a paper shredder is configured to send all the shredded paper in the paper shredder out of the paper shredder. A delay control mechanism of the paper shredder is arranged on the paper shredder. The purpose of the control mechanism is to control the paper shredder to be turned off after a period of time when the last piece of paper enters the paper shredder. In order to reduce the manufacturing cost of the paper shredder, a mechanical delay control mechanism of the paper shredder is widely used. The existing mechanical delay control mechanism of the paper shredder is configured to arrange a helical groove on one end of a paper shredder cutter shaft. A control piece is configured to move in the helical groove. The moving time of the control piece in the helical groove, i.e. the time from when the control piece enters the helical groove to when the control piece leaves the helical groove, is the delay time of the paper shredder. The structure is complex, the cost is high, faults are prone to occur, and the reliability is poor. CONTENT OF THE UTILITY MODEL

[0003] The present application aims to provide a paper shredder and a delay control mechanism thereof, so as to solve the technical problems of the prior art, such as complex structure of the delay mechanism and poor delay reliability.

[0004] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] As a first aspect, the present application relates to a delay control mechanism arranged at a paper shredder paper shredding inlet, which comprises a delay seat, a light touch switch arranged on the delay seat, a delay rotating rod, a first delay gear and a second delay gear. The first delay gear and the second delay gear are a pair of meshable gears and are respectively connected with the delay rotating rod and a paper shredder cutter shaft. The delay rotating rod is rotatably arranged on the delay seat. A paper touch head and a sensing touch head are coaxially arranged on the delay rotating rod. The paper touch head is pushed and rotated by the paper entering the paper shredding inlet to drive the delay rotating rod. The sensing touch head rotates with the delay rotating rod to approach and contact the light touch switch. An elastic reset member is arranged on the delay seat to reversely rotate the paper touch head to restore the original position.

[0006] Further, the elastic reset member comprises a U-shaped elastic piece. One side of the U-shaped elastic piece is fixed to the delay seat, and the other side of the U-shaped elastic piece abuts against the paper touch head.

[0007] Further, an installation groove is arranged on the delay seat. The U-shaped elastic piece is installed in the installation groove. The paper touch head is rotatably inserted into the installation groove.

[0008] Further, a swing rod extending along the radial direction of the delay rotating rod is arranged on the end of the delay rotating rod connected with the first delay gear. The end of the swing rod away from the delay rotating rod is connected with the shaft center of the first delay gear.

[0009] Further, the first delay gear comprises a sector gear, the second delay gear comprises a cylindrical gear, and the first delay gear is engaged with the second delay gear during rotation of the delay lever.

[0010] Further, the swing lever is provided with a limiting rod for limiting the original position of the paper head, and the limiting rod is arranged at an angle with the side of the first delay gear.

[0011] Further, the delay seat is provided with a supporting seat for supporting the delay lever.

[0012] Further, the delay seat is further provided with a delay pressing block, the delay pressing block is provided with a containing groove for inserting the delay lever, the delay pressing block is used for limiting the delay lever between the supporting seat and the delay pressing block, and the outer wall of the delay pressing block on the opening side of the containing groove is provided with an outwardly protruding reverse buckle structure for being engaged with the delay seat.

[0013] Further, the delay lever is provided with a limiting boss for abutting against the supporting seat to limit the axial movement of the delay lever relative to the delay seat.

[0014] As a second aspect, the application relates to a paper shredder, which comprises a main machine frame, a paper shredder shaft and the delay control mechanism as described above, the delay control mechanism is arranged at the paper shredding inlet of the main machine frame, the touch switch in the delay control mechanism is used for controlling the rotation of the paper shredder shaft, and the second delay gear in the delay control mechanism is coaxially connected with the paper shredder shaft.

[0015] Compared with the prior art, the scheme has the following advantages:

[0016] The delay control mechanism applied to the paper shredder disclosed by the application can realize the overall resetting of the delay pressing block through the elastic resetting member, so that the paper shredding operation of the paper shredder can be realized when the paper is continuously fed into the paper shredding inlet, and the delay operation of the paper shredder shaft can be realized through the engagement of the first delay gear and the second delay gear during the resetting process of the delay pressing block, so that the cutting and shredding of the paper are completely ensured, the paper shredding efficiency is improved, the paper jamming is reduced, the structure is simple, the installation and dismounting are convenient, the labor cost and the material cost can be effectively saved.

[0017] Additional aspects and advantages of the application will be set forth in part in the following description, and will be apparent from the description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings of which:

[0019] Figure 1 Structure diagram of a time delay control mechanism according to an embodiment of the present application;

[0020] Figure 2 Structure diagram of a time delay seat according to an embodiment of the time delay control mechanism of the present application;

[0021] Figure 3 Diagram of an elastic reset member according to an embodiment of the time delay control mechanism of the present application;

[0022] Figure 4 Diagram of a time delay pressing block according to an embodiment of the time delay control mechanism of the present application;

[0023] Figure 5 Diagram of a time delay pressing block and a time delay base cooperating with each other according to an embodiment of the time delay control mechanism of the present application;

[0024] Figure 6 Diagram of a sensing contact touching a touch switch according to an embodiment of the time delay control mechanism of the present application.

[0025] In the drawings, 1, time delay seat; 11, mounting groove; 2, touch switch; 3, time delay rotating lever; 31, touch head; 32, sensing contact; 33, swing lever; 34, limiting boss; 4, elastic reset member; 5, first time delay gear; 6, second time delay gear; 7, limiting lever; 8, supporting seat; 9, time delay pressing block; 91, accommodating groove; 92, reverse buckle structure; 100, main machine frame; 101, paper shredding inlet; 200, paper shredder cutter shaft; 300, time delay control mechanism. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described in detail below with reference to the accompanying drawings, in which examples of the embodiments are shown, wherein the same or similar notations are used to denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be interpreted as a limitation on the present application.

[0027] It should be understood that each step recorded in the method embodiment of the present application can be executed in different order and / or in parallel. In addition, the method embodiment can include additional steps and / or omit the execution of the shown steps. The scope of the present application is not limited in this respect.

[0028] The term "including" and variations thereof, as used in this document, mean "including, but not limited to," unless expressly specified otherwise. The term "connected" can mean directly connected, or indirectly connected via intervening components (elements), unless otherwise specifically stated. The term "one embodiment" is used to mean at least one embodiment; the term "another embodiment" is used to mean at least one additional embodiment; the term "some embodiments" is used to mean at least some embodiments. Relative terms such as "first," "second," and the like can be used solely to distinguish one entity or action from another, without necessarily implying that they are present in a sequence or that one precedes another.

[0029] It should be noted that the terms "first", "second", and the like used in the present application are only used to distinguish the devices, modules or units, and are not intended to limit the devices, modules or units to different devices, modules or units, nor are they intended to limit the order or interdependence of the functions performed by the devices, modules or units.

[0030] In view of the problem that the current paper shredder delay mechanism is complex in structure and cannot realize cyclic operation, the present application proposes a delay control mechanism suitable for a paper shredder, which is arranged at a paper shredding inlet of the paper shredder, and the specific structure is shown in Figures 1 to 6 The delay control mechanism comprises a delay seat 1, a touch switch 2 arranged on the delay seat 1, and a delay rotating rod 3. The touch switch 2 is used to control the rotation of a paper shredder shaft 200 of the paper shredder. The delay rotating rod 3 is rotatably connected to the delay seat 1. The delay rotating rod 3 is provided with a paper touch head 31 and a sensing touch head 32 which are coaxially rotatable. The paper touch head 31 can be pushed and rotated by the paper entering the paper shredding inlet 101, and simultaneously drives the delay rotating rod 3 to rotate. The sensing touch head 32 rotates with the delay rotating rod 3 and approaches the touch switch 2 and contacts the touch switch 2, so that the touch switch 2 is started in the case of touching and makes the paper shredder shaft 200 rotate to cut and shred the paper entering the paper shredding inlet 101. The delay seat 1 is provided with an elastic reset member 4 for reverse rotation of the paper touch head 31 to restore the original position, that is, when the paper completely enters the paper shredding inlet 101, the paper touch head 31 reversely rotates under the elastic restoring force of the elastic reset member 4 when it is not pushed by the paper, and drives the delay rotating rod 3 to rotate, so that the sensing touch head 32 rotates away from the touch switch 2 with the delay rotating rod 3, and after resetting, the sensing touch head 32 is not in contact with the touch switch 2, and the touch switch 2 is powered off. That is, the present application sets the elastic reset member 4 on the delay seat 1 which can restore the paper touch head 31 to the original position after paper feeding, so as to assist the resetting of the delay rotating rod 3 to realize the cyclic operation of the delay control mechanism 300.

[0031] Specifically, the elastic reset member 4 of the embodiment includes a U-shaped elastic sheet, one side of the U-shaped elastic sheet is fixed with the delay seat 1, and the other end is in contact with the paper touch head 31. When the paper touch head 31 is pushed by the paper and rotates, the U-shaped elastic sheet is squeezed to be elastically deformed. After the paper is completely fed into the shredding entrance 101, the paper touch head 31 reversely rotates under the elastic restoring force of the U-shaped elastic sheet to restore to the original position. At the same time, the delay seat 1 is provided with a mounting groove 11, and the U-shaped elastic sheet is mounted in the mounting groove 11. The paper touch head 31 can be rotatably inserted into the mounting groove 11, so as to ensure that the paper touch head 31 can rotate to squeeze the U-shaped elastic sheet, thereby improving the stability of the reset.

[0032] Further, the U-shaped elastic sheet can be integrally formed with the delay seat 1 during injection molding. The elastic deformation of the U-shaped elastic sheet can prevent the light touch switch 2 from being stuck after being triggered, thereby assisting the reset of the delay rotating rod 3 and improving the structural stability.

[0033] The delay rotating rod 3 is connected with a first delay gear 5, and the shredder cutter shaft 200 is connected with a second delay gear 6. When the delay rotating rod 3 rotates, the first delay gear 5 meshes with the second delay gear 6. Thus, when the delay rotating rod 3 resets along with the paper touch head 31, the first delay gear 5 rotates along with the delay rotating rod 3 to rotate the second delay gear 6 meshed therewith. After the light touch switch 2 is powered off, the shredder cutter shaft 200 can continue to rotate to completely cut the paper under the cooperation of the first delay gear 5 and the second delay gear 6.

[0034] Further, the end of the delay rotating rod 3 connected with the first delay gear 5 is provided with a swing rod 33 extending along the radial direction thereof. The end of the swing rod 33 away from the end connected with the delay rotating rod 3 is connected with the shaft center of the first delay gear 5. The first delay gear 5 of the embodiment includes a sector gear, and the second delay gear 6 includes a cylindrical gear meshable with the sector gear. The number of rotations of the second delay gear 6 when the light touch switch 2 is powered off is related to the number of teeth of the sector gear. When the paper touch head 31 is in the original position, the first delay gear 5 and the second delay gear 6 are in a non-meshing state. When the paper touch head 31 is pushed by the paper and rotates, the first delay gear 5 rotates to mesh with the second delay gear 6. When the paper touch head 31 rotates to the position where the sensing touch head 32 contacts the light touch switch 2, the paper touch head 31 cannot continue to rotate with the delay rotating rod 3. At this time, the first delay gear 5 rotates to disengage from the second delay gear 6. When the sensing touch head 32 contacts the light touch switch 2 to start the light touch switch 2, the shredder cutter shaft 200 rotates. The paper fed into the shredding entrance 101 is crushed under the cutting action of the high-speed rotating cutter group of the shredder cutter shaft 200, so as to realize the shredding operation of the shredder.

[0035] When the paper is completely sent into the shredding entrance 101, the paper contact head 31 is no longer pushed by the paper, and the paper contact head 31 reversely rotates under the elastic restoring force of the U-shaped elastic sheet to drive the whole delay rotating rod 3 to reset. The reset reaction contact head no longer contacts the micro switch 2, the micro switch 2 is powered off, and the motor of the shredder cutter shaft 200 stops rotating. However, in the resetting process of the delay rotating rod 3, the first delay gear 5 reversely rotates with the delay and meshes with the second delay gear 6, and drives the second delay gear 6 to rotate in the rotating process of the first delay gear 5, so that the shredder cutter shaft 200 coaxially connected with the second delay gear 6 can synchronously rotate to continue to completely shred the end of the paper sent into the shredding entrance 101, improve the shredding effect of the shredder, and avoid the situation of paper jam caused by incomplete cutting.

[0036] Meanwhile, a limiting rod 7 is further connected to the end of the swing rod 33, the limiting rod 7 can limit the original position of the paper contact head 31, and ensure that the original position of the paper contact head 31 is in the position that can be pushed by the paper sent into the shredding entrance 101, and the limiting rod 7 and the side of the first delay gear 5 form an included angle.

[0037] In addition, the delay seat 1 is provided with a support seat 8 for supporting the delay rotating rod 3, and the delay seat 1 is provided with a delay pressing block 9 to limit the delay rotating rod 3 between the support seat 8 and the delay pressing block 9. The delay pressing block 9 is provided with an insertion accommodating groove 91 for the delay rotating rod 3, so as to define a limiting space for limiting the installation height position of the delay pressing block 9 through the delay pressing block 9 and the support seat 8, and ensure the stability of the axial rotation of the delay pressing block 9. The outer wall of the delay seat 1 at the opening side of the insertion accommodating groove 91 is provided with an outwardly protruding reverse buckle structure 92 for buckling with the delay seat 1, so as to buckle the delay pressing block 9 on the delay seat 1 through the reverse buckle structure 92, without the need of using screws for locking, and the installation and dismounting are convenient, which can ensure the reliable assembly and save the labor cost and the screw material cost.

[0038] Further, the delay rotating rod 3 is provided with a limiting boss 34 abutting against the support seat 8 to limit the axial movement of the delay rotating rod 3 relative to the delay seat 1, so as to further improve the stability of the axial rotation of the delay rotating rod 3.

[0039] In summary, when the delay control mechanism 300 of the present application is applied in the shredder, the elastic reset member 4 is arranged to realize the overall resetting of the delay pressing rod, so as to realize the shredding operation of the shredder when the paper is continuously sent into the shredding entrance 101, and in the resetting process of the delay pressing rod, the delay operation of the shredder cutter shaft 200 is realized through the meshing of the first delay gear 5 and the second delay gear 6, so as to ensure the complete cutting and shredding of the paper, improve the shredding efficiency, reduce the occurrence of paper jam, and the structure is simple, the installation and dismounting are convenient, and the labor cost and the material cost can be effectively saved.

[0040] The application also relates to a paper shredder, please combine Figure 1 , comprising a mainframe 100, a paper shredder cutter shaft 200 and a delay control mechanism 300, the delay control mechanism 300 is the delay control mechanism 300 described above, which is arranged at the paper shredder entrance 101 of the mainframe 100, the delay platform of the delay control mechanism 300 is fixed on the mainframe 100, and the light touch switch 2 in the delay control mechanism 300 can be used to control the rotation of the paper shredder cutter shaft 200, so that the rotation of the paper shredder cutter shaft 200 can be controlled according to the situation of paper feeding into the paper shredder entrance 101, so that the paper shredder can accurately control the rotation of the paper shredder cutter shaft according to the situation of paper feeding into the paper shredder entrance 101, avoiding energy loss caused by long-time starting of the paper shredder cutter shaft 200.

[0041] In addition, the second delay gear 6 in the delay control mechanism 300 is coaxially connected with the paper shredder cutter shaft 200, so that after the paper is completely fed into the paper shredder entrance 101, the delay pressure rod is reset as a whole, the paper shredder cutter shaft 200 continues to rotate under the drive of the second delay gear 6 to make the cutter group continue to cut the paper, ensuring the complete shredding effect of the paper and improving the shredding efficiency, and also avoiding the situation of paper jam caused by incomplete shredding.

[0042] The above is only part of the embodiments of the application, it should be pointed out that for ordinary skilled in the art, without departing from the principles of the application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the application.

Claims

1. A delay control mechanism, disposed at the shredding inlet of a paper shredder, characterized in that, The device includes a delay base and a tactile switch, a delay lever, a first delay gear, and a second delay gear mounted on the delay base. The first and second delay gears are a pair of meshing gears and are respectively connected to the delay lever and the shredder cutter shaft. The delay lever is rotatably mounted on the delay base and has a paper contact head and a sensing contact head that rotate coaxially with it. The paper contact head is pushed and rotated by the paper entering the shredder inlet, which drives the delay lever. The sensing contact head moves closer to the tactile switch and contacts the tactile switch as the delay lever rotates. The delay base has an elastic reset member for causing the paper contact head to rotate in the opposite direction to return to its original position.

2. The delay control mechanism according to claim 1, characterized in that, The elastic reset component includes a U-shaped spring sheet, one side of which is fixed to the delay seat, and the other side of which abuts against the paper contact head.

3. The delay control mechanism according to claim 2, characterized in that, The delay seat has an installation groove, the U-shaped spring is installed in the installation groove, and the paper contact head can be rotatably inserted into the installation groove.

4. The delay control mechanism according to claim 1, characterized in that, The end of the delay rotor connected to the first delay gear is provided with a swing arm extending radially therefrom, and the end of the swing arm away from the connection with the delay rotor is connected to the axis of the first delay gear.

5. The delay control mechanism according to claim 4, characterized in that, The first delay gear includes a sector gear, and the second delay gear includes a cylindrical gear. During the rotation of the delay rod, the first delay gear meshes with the second delay gear.

6. The delay control mechanism according to claim 5, characterized in that, The swing arm is provided with a limiting rod for limiting the original position of the paper contact head, and the limiting rod is set at an angle to the side of the first delay gear.

7. The delay control mechanism according to claim 1, characterized in that, The delay seat is provided with a support seat for supporting the delay rotating rod.

8. The delay control mechanism according to claim 7, characterized in that, The delay seat is also provided with a delay pressure block. The delay pressure block has a receiving groove for the delay rotating rod to be inserted. The delay pressure block is used to restrict the delay rotating rod between the support seat and the delay pressure block. The outer wall of the delay pressure block located on the side of the receiving groove opening is provided with an outward protrusion for engaging with the delay seat.

9. The delay control mechanism according to claim 7, characterized in that, The delay rod is provided with a limiting boss that abuts against the support seat to restrict the delay rod from moving axially relative to the delay seat.

10. A paper shredder, characterized in that, The device includes a main frame, a shredder blade shaft, and a delay control mechanism as described in any one of claims 1-9. The delay control mechanism is located at the shredding inlet of the main frame. A tactile switch in the delay control mechanism is used to control the rotation of the shredder blade shaft, and a second delay gear in the delay control mechanism is coaxially connected to the shredder blade shaft.

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