CN216232811U

CN216232811U - Multi-tooth sheet type rotary chain wheel for bicycle

Info

Publication number: CN216232811U
Application number: CN202122821057.6U
Authority: CN
Inventors: 虞立江; 张伟
Original assignee: Hangzhou Maixunluo Machinery Co ltd
Current assignee: Hangzhou Maixunluo Machinery Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-04-08
Anticipated expiration: 2031-11-16

Abstract

The utility model relates to the technical field of bicycle parts and discloses a multi-tooth sheet type rotating chain wheel for a bicycle, which comprises a transmission shaft and a double-row chain wheel which is sleeved on the transmission shaft and can rotate along the transmission shaft, wherein the double-row chain wheel comprises a driving chain wheel and a driven chain wheel, the circumferential surface of the transmission shaft is provided with a stroke groove along the length direction of the transmission shaft, the inner circumferential sides of the driving chain wheel and the driven chain wheel are respectively provided with a sliding groove communicated with the inner part of the stroke groove, a stroke block is inserted in the stroke groove, and the stroke block is detachably and fixedly inserted on the inner circumferential side of the driving chain wheel or the driven chain wheel through the sliding groove. According to the utility model, through the arrangement of the adjusting mechanism and the connecting rod, the bicycle can be continuously ridden under the condition that one chain or one chain wheel in the double-row chain wheel fails, so that the problem that the bicycle cannot run due to the failure of the single chain or the single chain wheel is avoided, and the rationality of the whole transmission structure design of the bicycle is improved.

Description

Multi-tooth sheet type rotary chain wheel for bicycle

Technical Field

The utility model belongs to the technical field of bicycle parts, and particularly relates to a multi-tooth-sheet type rotating chain wheel of a bicycle.

Background

Bicycles, also known as bicycles or bicycles, are typically two-wheeled small land vehicles. After a person rides the vehicle, the person steps on the pedal as power, and the vehicle is a green and environment-friendly vehicle. The bicycle is of various types, including single-person bicycles, double-person bicycles and multi-person bicycles. It can be used as an environment-friendly vehicle for riding instead of walking and going out; more and more people use bicycles as fitness equipment for riding exercise and bicycle travel; the bicycle itself is also a sport event, including road bike racing, mountain bike racing, field bike racing, stunt bike racing, and the like.

Most of bicycles adopt the design of single row when manufacturing, namely, a chain is wound between two chain wheels, but the durability and the service life of the bicycle are relatively poor by the single chain for transmission, and the bicycle can not be used continuously when the chain is broken, so the durability and the reliability of a transmission system can be effectively improved by using the double-row chain wheels to match with the double chains for transmission.

And driven double sprocket is the structure of integral type mostly, when fracture appears in one of them of two chains, another chain also can't the exclusive use, need carry out whole maintenance and change and just can make the bicycle continue to ride, obviously, design a bicycle multiple tooth piece formula rotatory sprocket and still can continue to use another chain to carry out the transmission when making single chain fracture to it is necessary to keep the bicycle to continue normally to ride.

SUMMERY OF THE UTILITY MODEL

The utility model aims to: to solve the problems set forth in the background art, the present invention provides a multi-tooth rotary sprocket for a bicycle.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a bicycle multiple tooth piece formula rotating sprocket, includes the transmission shaft and cup joints on the transmission shaft and can follow the transmission shaft and carry out pivoted double sprocket, double sprocket includes drive sprocket and driven sprocket, the stroke groove has been seted up along its length direction to the circumferential surface of transmission shaft, the spout that is linked together with stroke inslot portion is all seted up to drive sprocket and driven sprocket's the week side, the interpolation of stroke inslot has the stroke piece, the stroke piece can be dismantled fixed the grafting in drive sprocket or driven sprocket's interior periphery side through the spout, just be provided with in the stroke inslot and be used for making the stroke piece to remove the adjustment mechanism who removes about, can dismantle fixedly connected with and the connecting rod that the transmission shaft the central axis paralleled between drive sprocket and the driven sprocket.

Furthermore, one side of the inner wall of the stroke groove is rotatably connected with a first threaded rod which is in a left-right axial direction and is inserted into the stroke block through threads through a bearing, the other side of the stroke groove is rotatably connected with a first knob through a bearing, the first knob and the first threaded rod are fixed, the first knob is pushed by a finger to rotate, so that the first threaded rod rotates, the stroke block can move left and right along with the rotation of the first threaded rod, and the first threaded rod can be inserted into a sliding groove in the driving chain wheel or the driven chain wheel to drive one of the driving chain wheel and the driven chain wheel to rotate.

Furthermore, one side of the driving chain wheel and one side of the driven chain wheel, which are far away from each other, are provided with threaded holes which are axially vertical to the transmission shaft, two bilaterally symmetrical limiting grooves are formed in the top of the stroke block, one of the limiting grooves is communicated with the corresponding threaded hole, a second threaded rod inserted in the corresponding limiting groove is connected to the driving chain wheel through threaded holes in a threaded manner, a second knob is fixedly connected to the top of the second threaded rod, and the second threaded rod can be detached from the driving chain wheel through threaded matching by rotating the second knob so as to release the fixation of the stroke block.

Furthermore, the second knob is a hexagonal block, and a groove with a hexagonal inner structure is formed in the top of the second knob, so that the second knob can be conveniently pulled by a wrench tool to rotate.

Further, the hole has all been seted up with driven sprocket's terminal surface to the drive sprocket, the both sides of connecting rod are passed through the hole respectively and are alternated to be connected on drive sprocket and driven sprocket, be provided with on the connecting rod and be used for dismantling fixed spacing subassembly, when the connecting rod is fixed in between drive sprocket and the driven sprocket, can make and rotate in step between drive sprocket and the driven sprocket, and follow the back of dismantling between drive sprocket and the driven sprocket with the connecting rod, can make drive sprocket and driven sprocket can independently rotate, mutual noninterference.

Further, the connecting rod is the bolt, the head of bolt is contradicted at drive sprocket's terminal surface, spacing subassembly includes the hexagon nut of cup jointing on the bolt through the screw thread, just hexagon nut's surface is contradicted at driven sprocket's terminal surface, makes its and bolt phase separation through rotating hexagon nut, can follow drive sprocket with the connecting rod and take out on the driven sprocket.

Compared with the prior art, the utility model has the beneficial effects that:

through the arrangement of the adjusting mechanism and the connecting rod, when one chain is broken, the connecting rod between the driving sprocket and the driven sprocket is firstly exemplified by the broken chain on the driven sprocket, so that the driven sprocket can not rotate along with the rotation of the driving sprocket, the driving shaft can independently drive the driving sprocket to rotate when rotating, the normal riding of the bicycle can not be influenced by the faults of the driven sprocket and the chain thereof, meanwhile, the chain on the driving sprocket is exemplified by the broken chain, the connecting rod between the driving sprocket and the driven sprocket is still firstly disassembled, the stroke block can move left and right in the stroke groove under the action of the adjusting mechanism, the stroke block can move from the sliding groove on the driving sprocket to the sliding groove on the driven sprocket, and therefore, when the driving shaft drives the stroke block to rotate, the driven sprocket can be driven to rotate but not to be the driving sprocket, make the trouble of driving sprocket and chain also can not influence riding of bicycle, this kind of design can continue to ride the bicycle under the condition that one of them chain or a sprocket in the double sprocket broke down to avoid appearing leading to the unable problem of traveling of bicycle because of single chain or single sprocket trouble, improved the rationality of the whole transmission structural design of bicycle.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic perspective view of the present invention;

FIG. 3 is a schematic plan view of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure taken along the direction A-A of the present invention;

FIG. 5 is an exploded view of the structure of the present invention;

in the figure: 1. a drive shaft; 2. double-row chain wheels; 21. a drive sprocket; 22. a driven sprocket; 23. A chute; 3. a stroke slot; 4. a stroke block; 5. an adjustment mechanism; 51. a first threaded rod; 52. A first knob; 6. a threaded hole; 7. a limiting groove; 8. a second threaded rod; 9. a second knob; 10. a connecting rod; 11. a hexagonal nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present embodiment provides a multi-tooth rotary sprocket for a bicycle, comprising a transmission shaft 1 and a double-row sprocket 2 sleeved on the transmission shaft 1 and capable of rotating along with the transmission shaft 1, wherein the double-row sprocket 2 comprises a driving sprocket 21 and a driven sprocket 22, a stroke slot 3 is formed on the circumferential surface of the transmission shaft 1 along the length direction thereof, sliding slots 23 communicated with the inside of the stroke slot 3 are formed on the inner circumferential sides of the driving sprocket 21 and the driven sprocket 22, a stroke block 4 is inserted in the stroke slot 3, the stroke block 4 is detachably and fixedly inserted on the inner circumferential side of the driving sprocket 21 or the driven sprocket 22 through the sliding slots 23, such that the transmission shaft 1 drives the stroke block 4 to rotate when rotating, the stroke block 4 can drive the driving sprocket 21 to correspondingly rotate, and an adjusting mechanism 5 for moving the stroke block 4 left and right is disposed in the stroke slot 3, the connecting rod 10 parallel to the central axis of the transmission shaft 1 is detachably and fixedly connected between the driving sprocket 21 and the driven sprocket 22, so that the driven sprocket 22 can synchronously rotate along with the rotation of the driving sprocket 21, chains are wound on the driving sprocket 21 and the driven sprocket 22 through chain teeth, so that the bicycle can be transmitted through double chains, the durability of a bicycle transmission system is improved, when one chain is broken, the chain on the driven sprocket 22 is broken, the connecting rod 10 between the driving sprocket 21 and the driven sprocket 22 is detached, so that the driven sprocket 22 can not rotate along with the rotation of the driving sprocket 21, in this way, the driving sprocket 21 can be independently driven to rotate by the transmission shaft 1 when rotating, the normal riding of the bicycle can not be influenced by the faults of the driven sprocket 22 and the chains thereof, and meanwhile, the chain on the driving sprocket 21 is broken, still dismantle the connecting rod 10 between drive sprocket 21 and the driven sprocket 22 earlier, the effect of rethread adjustment mechanism 5 makes stroke piece 4 move about in stroke groove 3, make it can move to the spout 23 on the driven sprocket 22 from spout 23 on the drive sprocket 21 in, like this, drive stroke piece 4 and rotate as transmission shaft 1, can drive driven sprocket 22 and rotate and not drive sprocket 21, make the trouble of drive sprocket 21 and chain also can not influence the riding of bicycle, this kind of design can be under the condition that one of them chain or one sprocket in double sprocket 2 breaks down, continue to ride the bicycle, thereby avoid appearing leading to the unable problem of traveling of bicycle because of single chain or single sprocket trouble, the rationality of the whole transmission structural design of bicycle has been improved.

Specifically, referring to fig. 4 and 5, the specific reason why the stroke block 4 can move left and right is that one side of the inner wall of the stroke slot 3 is rotatably connected with a first threaded rod 51 which is in left and right axial directions and is inserted into the stroke block 4 through a thread through a bearing, the other side of the stroke slot 3 is rotatably connected with a first knob 52 through a bearing, and the first knob 52 is fixed with the first threaded rod 51, so that the first knob 52 can be pushed by a finger to rotate so that the first threaded rod 51 rotates, and the first threaded rod 51 can drive the stroke block 4 to move correspondingly through the matching of the thread, because the stroke block 4 is inserted into the stroke slot 3 and the sliding slot 23, the stroke block 4 can only slide along the length direction of the stroke slot 3 and the sliding slot 23, and therefore, the stroke block 4 can move left and right along with the rotation of the first threaded rod 51, so that the stroke block can be inserted into the sliding slot 23 in the driving sprocket 21 or the driven sprocket 22, to rotate one of the driving sprocket 21 and the driven sprocket 22.

In order to enable the stroke block 4 to be detachably fixed with the driving sprocket 21 or the driven sprocket 22, in some embodiments, it is provided that one side, away from each other, of the driving sprocket 21 and the driven sprocket 22 is provided with a threaded hole 6 axially perpendicular to the transmission shaft 1, the top of the stroke block 4 is provided with two bilaterally symmetrical limiting grooves 7, one of the limiting grooves 7 is communicated with the inside of the corresponding threaded hole 6, the driving sprocket 21 is in threaded connection with a second threaded rod 8 inserted in the corresponding limiting groove 7 through the threaded hole 6, and the top of the second threaded rod 8 is fixedly connected with a second knob 9, so that the second threaded rod 8 can be detached from the driving sprocket 21 through threaded fit by rotating the second knob 9 and can be separated from the limiting groove 7 on the stroke block 4, and the stroke block 4 can be moved left and right under the action of the adjusting mechanism 5, after the threaded rod II 8 is moved to a proper position, the threaded rod II is inserted into the threaded hole 6 in the driving chain wheel 21 or the driven chain wheel 22 through threads and is inserted into the corresponding limiting groove 7, and then the stroke block 4 and the driving chain wheel 21 or the driven chain wheel 22 can be fixed.

Preferably, the second knob 9 is a hexagonal block, and a groove with a hexagonal inner structure is formed in the top of the second knob, so that the second knob 9 can be conveniently pulled by a wrench tool to rotate, and the threaded fixing or the dismounting between the second threaded rod 8 and the threaded hole 6 can be realized.

And as to specific connected mode between drive sprocket 21 and the driven sprocket 22 as follows, the hole has all been seted up to drive sprocket 21 and driven sprocket 22's terminal surface, the both sides of connecting rod 10 are passed through the hole respectively and are alternate to be connected on drive sprocket 21 and driven sprocket 22, be provided with on the connecting rod 10 and be used for dismantling fixed spacing subassembly, when connecting rod 10 is fixed in between drive sprocket 21 and the driven sprocket 22, can make and can rotate simultaneously between drive sprocket 21 and the driven sprocket 22, and dismantle the back with connecting rod 10 between drive sprocket 21 and the driven sprocket 22, can make drive sprocket 21 and driven sprocket 22 can rotate independently, mutual noninterference.

Specifically, connecting rod 10 is the bolt, and the head of bolt is contradicted at the terminal surface of drive sprocket 21, and spacing subassembly includes that cup joints hexagon nut 11 on the bolt through the screw thread, and the surface of hexagon nut 11 is contradicted at driven sprocket 22's terminal surface, like this, makes its and bolt phase separation through rotating hexagon nut 11, can follow drive sprocket 21 with connecting rod 10 and take out from driven sprocket 22, realizes drive sprocket 21 and driven sprocket 22's independent rotation.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A multi-tooth-sheet type rotating chain wheel for a bicycle comprises a transmission shaft (1) and a double-row chain wheel (2) which is sleeved on the transmission shaft (1) and can rotate along with the transmission shaft (1), and is characterized in that the double-row chain wheel (2) comprises a driving chain wheel (21) and a driven chain wheel (22), a stroke groove (3) is formed in the circumferential surface of the transmission shaft (1) along the length direction of the transmission shaft, sliding grooves (23) communicated with the inside of the stroke groove (3) are formed in the inner circumferential sides of the driving chain wheel (21) and the driven chain wheel (22), a stroke block (4) is inserted in the stroke groove (3), the stroke block (4) is detachably and fixedly inserted in the inner circumferential sides of the driving chain wheel (21) or the driven chain wheel (22) through the sliding grooves (23), and an adjusting mechanism (5) used for enabling the stroke block (4) to move left and right is arranged in the stroke groove (3), a connecting rod (10) parallel to the central axis of the transmission shaft (1) is detachably and fixedly connected between the driving chain wheel (21) and the driven chain wheel (22).

2. A multi-tooth sheet type rotary sprocket for bicycle according to claim 1, wherein a first threaded rod (51) which is axially arranged at left and right sides and is inserted into the stroke block (4) through a thread is rotatably connected to one side of the inner wall of the stroke slot (3) through a bearing, a first knob (52) is rotatably connected to the other side of the stroke slot (3) through a bearing, and the first knob (52) and the first threaded rod (51) are fixed.

3. A bicycle multi-tooth-plate type rotating sprocket according to claim 1, wherein the sides of the driving sprocket (21) and the driven sprocket (22) away from each other are respectively provided with a threaded hole (6) which is axially perpendicular to the transmission shaft (1), the top of the stroke block (4) is provided with two bilaterally symmetrical limiting grooves (7), one of the limiting grooves (7) is communicated with the inside of the corresponding threaded hole (6), the driving sprocket (21) is connected with a second threaded rod (8) inserted in the corresponding limiting groove (7) through the threaded hole (6), and the top of the second threaded rod (8) is fixedly connected with a second knob (9).

4. A bicycle multi-tooth-plate type rotating sprocket as claimed in claim 3, wherein the second knob (9) is a hexagonal block and has a recess with a hexagonal internal configuration formed at the top thereof.

5. A multi-tooth sheet type rotary sprocket for bicycle according to claim 1, wherein the end faces of the driving sprocket (21) and the driven sprocket (22) are both provided with holes, two sides of the connecting rod (10) are respectively inserted into the driving sprocket (21) and the driven sprocket (22) through the holes, and the connecting rod (10) is provided with a limit component for detachable fixation.

6. A bicycle multiple tooth plate type rotating sprocket according to claim 5, wherein the connecting rod (10) is a bolt, the head of the bolt abuts against the end face of the driving sprocket (21), the limiting member comprises a hexagonal nut (11) which is sleeved on the bolt through screw threads, and the surface of the hexagonal nut (11) abuts against the end face of the driven sprocket (22).