阅读说明：本技术 一种无级变速自行车牙盘 (Stepless speed changing bicycle chain wheel ) 是由 徐艳 于 2021-09-13 设计创作，主要内容包括：本发明属于自行车牙盘技术领域,具体涉及一种无级变速自行车牙盘,包括安装盘,安装盘环形均匀设有若干第一滑槽,若干第一滑杆均滑动装配有安装件,若干安装件一侧均伸出第一滑槽固定连接有弧形件,若干弧形件共同组成一个传动件,若干安装件另一端均装配有伸出第一滑槽的滑动件,圆盘设有与若干滑动件相匹配的驱动机构,安装盘设有与若干传动齿相匹配的传动机构,本发明使若干弧形件同时向远离安装盘中心一侧移动,或同时向靠近安装盘中心一侧移动,这样便能随意的改变传动件的直径达到变速的作用,且为无级变速,提高牙盘的实用性。(The invention belongs to the technical field of bicycle crankshafts, and particularly relates to a stepless speed change bicycle crankset which comprises an installation disc, wherein a plurality of first sliding grooves are uniformly and annularly arranged on the installation disc, installation parts are assembled on a plurality of first sliding rods in a sliding mode, arc-shaped parts fixedly connected with the first sliding grooves extend out of one sides of the installation parts, the arc-shaped parts jointly form a transmission part, sliding parts extending out of the first sliding grooves are assembled at the other ends of the installation parts, a driving mechanism matched with the sliding parts is arranged on the disc, and a transmission mechanism matched with a plurality of transmission teeth is arranged on the installation disc.)

1. A stepless speed change bicycle chain wheel comprises a mounting disc, and is characterized in that: the mounting disc annular evenly is equipped with a plurality of first spouts, and is a plurality of all be equipped with first slide bar, and is a plurality of in the first spout first slide bar all slides and is equipped with the installed part, and is a plurality of first spout fixedly connected with arc spare is all stretched out to installed part one side, and is a plurality of arc spare lateral surface all is equipped with the meshing tooth, and is a plurality of a driving medium is constituteed jointly to the arc spare, and is a plurality of the installed part other end all is equipped with the slider that stretches out first spout, the mounting disc is kept away from arc spare side surface and is rotated and is equipped with the disc, the disc be equipped with a plurality of slider assorted actuating mechanism, disc surface annular evenly is equipped with a plurality of driving teeth, the mounting disc be equipped with a plurality of driving tooth assorted drive mechanism.

2. The infinitely variable bicycle crankset of claim 1, wherein: the driving mechanism comprises a plurality of arc-shaped sliding grooves which are symmetrical about the center of the disc, the sliding parts respectively extend into the arc-shaped sliding grooves, and the arc-shaped sliding grooves are close to one side of the center of the disc and laterally deflect clockwise to the side far away from the center of the disc.

3. The infinitely variable bicycle crankset of claim 1, wherein: the transmission mechanism comprises a rack, a screw rod, a handle and a mounting seat, the rack is assembled with the mounting plate in a sliding mode, the rack is meshed with a plurality of transmission teeth, a thread groove is formed in one end of the rack, the screw rod is connected with the thread groove in a threaded mode, the thread groove is extended out of one side of the screw rod and assembled with the mounting seat in a rotating mode, the mounting seat is fixedly connected with the mounting plate, and the mounting seat is extended out of one end of the screw rod and fixedly connected with the handle.

4. A continuously variable bicycle crankset as set forth in claim 3, wherein: the outer surface of the handle is provided with anti-skid grains.

5. A continuously variable bicycle crankset as set forth in claim 3, wherein: fixedly connected with and disc assorted safety cover can be dismantled to the mounting disc, the safety cover be equipped with handle assorted breach.

6. The continuously variable bicycle crankset of claim 5, wherein: the mounting disc is kept away from arc one side and is equipped with the circular block, the disc is connected with circular block surface rotation, the mounting disc middle part be equipped with the first mounting hole of circular block intercommunication, the mounting hole inner wall is equipped with a plurality of first fixed slots, the guard shield be equipped with first mounting hole position assorted second mounting hole, second mounting hole inner wall be equipped with a plurality of first fixed slot one-to-one's second fixed slot.

7. A continuously variable bicycle crankset as set forth in claim 3, wherein: the mounting disc is provided with a second sliding groove matched with the position of the rack, a second sliding rod is arranged in the second sliding groove, and the rack is provided with a sliding strip sleeved with the second sliding rod.

8. The infinitely variable bicycle crankset of claim 1, wherein: and the sliding parts are rotatably assembled with the mounting parts.

Technical Field

The invention belongs to the technical field of bicycle crankshafts, and particularly relates to a stepless speed change bicycle crankset.

Background

The bicycle as a portable vehicle has been invented for more than 200 years from now to now, provides convenience for people to go out, is widely popularized and is popular among people. Although the living standard of people is improved along with the development of science and technology, private cars have been moved into thousands of households, and high-speed rails and airplanes are also provided for outgoing, more and more people ride bicycles again along with the gradual enhancement of energy-saving and environment-friendly outgoing health concepts of people. Today's bicycle is not only a simple and convenient tool for riding instead of walk, but also a fashion entertainment form which makes people feel close to nature, cultivate sentiment and exercise. The chain wheel is the part of the bicycle connected with the middle shaft and the crank. People drive the crank through pedaling, and then drive the rotation of chain wheel, finally pass through chain and flywheel, the drive rear wheel rotates, power is provided, accomplish the whole driving chain of bicycle, however present traditional bicycle is mostly for having a step variable speed, overlap together through the chain wheel of a plurality of different diameters, switch the chain wheel of using the difference when riding, reach the variable speed and change the effect of moment of torsion, however a plurality of chain wheel are overlapped together in parallel, be the step variable speed, and the position of a plurality of chain wheels has certain deviation, the chain has certain staggering to lead to warping when changing the meshing chain wheel, or there is slight skew in the driving tooth of chain wheel and the chain meshing, influence holistic life, it is very necessary to design the chain wheel of a infinitely variable speed consequently.

Disclosure of Invention

The purpose of the invention is: aims to provide a stepless speed change bicycle chain wheel to solve the problems in the background technology.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

the utility model provides a infinitely variable bicycle chain wheel, includes the mounting disc, the mounting disc annular evenly is equipped with a plurality of first spouts, and is a plurality of all be equipped with first slide bar in the first spout, it is a plurality of first slide bar all slides and is equipped with the installed part, and is a plurality of first spout fixedly connected with arc spare is all stretched out to installed part one side, and is a plurality of arc spare lateral surface all is equipped with the meshing tooth, and is a plurality of a driving medium is constituteed jointly to the arc spare, and is a plurality of the installed part other end all is equipped with the slider that stretches out first spout, the mounting disc is kept away from arc spare side surface and is rotated and is equipped with the disc, the disc be equipped with a plurality of slider assorted actuating mechanism, disc surface annular evenly is equipped with a plurality of driving teeth, the mounting disc be equipped with a plurality of driving tooth assorted drive mechanism.

The user can drive the disc to rotate clockwise and anticlockwise through the transmission mechanism, when the user drives the disc to rotate clockwise through the transmission mechanism, the plurality of arc chutes are driven to simultaneously rotate clockwise, the plurality of arc chutes simultaneously rotate clockwise, the inner walls of the arc chutes are abutted against the sliding parts, thereby driving the sliding parts to move towards the center of the mounting disc at the same time, the sliding parts can drive the arc-shaped parts to move towards the center of the mounting disc at the same time, the mounting part slides relative to the first sliding rod in the first sliding groove, thereby reducing the diameter of the transmission part, when a user drives the disc to rotate anticlockwise through the transmission mechanism, can drive the plurality of arc-shaped sliding chutes to rotate anticlockwise, and the arc-shaped sliding chutes are abutted against the sliding piece to move towards one side far away from the center of the mounting disc similarly to the above, thereby driving the arc-shaped pieces to move towards one side far away from the center of the mounting disc at the same time, and increasing the diameter of the transmission piece; the diameter of driving medium can grow and diminish, can adjust the diameter of driving medium to suitable size according to actual need, and be infinitely variable, improve the practicality of chain wheel.

The driving mechanism comprises a plurality of arc-shaped sliding grooves which are symmetrical about the center of the disc, the sliding parts respectively extend into the arc-shaped sliding grooves, and the arc-shaped sliding grooves are close to one side of the center of the disc and laterally deflect clockwise to the side far away from the center of the disc.

Such design, when the disc clockwise rotation, arc spout inner wall can drive the slider and sliding to the disc center for first spout to drive the arc and slide to the disc, a plurality of arc spouts correspond with if pole slider respectively, thereby when the disc clockwise rotation, can drive a plurality of arcs and slide to the disc center simultaneously, with last rationale, when the disc anticlockwise rotation, accessible arc spout inner wall butt slider drives a plurality of arcs and moves to keeping away from disc center one side simultaneously.

The transmission mechanism comprises a rack, a screw rod, a handle and a mounting seat, the rack is assembled with the mounting plate in a sliding mode, the rack is meshed with a plurality of transmission teeth, a thread groove is formed in one end of the rack, the screw rod is connected with the thread groove in a threaded mode, the thread groove is extended out of one side of the screw rod and assembled with the mounting seat in a rotating mode, the mounting seat is fixedly connected with the mounting plate, and the mounting seat is extended out of one end of the screw rod and fixedly connected with the handle.

Because screw rod and thread groove threaded connection to when the screw rod rotates to two directions respectively, can drive the rack horizontal slip, because rack and a plurality of driving teeth mesh, thereby when the rack rotates to two directions respectively, can drive the disc respectively clockwise rotation and anticlockwise rotation, the design of mount pad can not take place the displacement when guaranteeing that the screw rod can free rotation, the design person of being convenient for of handle rotates the screw rod.

The outer surface of the handle is provided with anti-skid grains. The design of the anti-slip lines is convenient for a user to rotate the handle.

Fixedly connected with and disc assorted safety cover can be dismantled to the mounting disc, the safety cover be equipped with handle assorted breach.

The design of safety cover can cover disc and drive mechanism, prevents that disc and drive mechanism from directly exposing in the external world, causes the damage, and the design of breach can make the handle stretch out the breach, is convenient for rotate the handle.

The mounting disc is kept away from arc one side and is equipped with the circular block, the disc is connected with circular block surface rotation, the mounting disc middle part be equipped with the first mounting hole of circular block intercommunication, the mounting hole inner wall is equipped with a plurality of first fixed slots, the guard shield be equipped with first mounting hole position assorted second mounting hole, second mounting hole inner wall be equipped with a plurality of first fixed slot one-to-one's second fixed slot.

The design of the first mounting hole and the first fixing groove and the design of the second mounting hole and the second fixing groove are convenient for stably mounting the bicycle axle on the whole.

The mounting disc is provided with a second sliding groove matched with the position of the rack, a second sliding rod is arranged in the second sliding groove, and the rack is provided with a sliding strip sleeved with the second sliding rod.

When the rack slides back and forth, the sliding strip slides back and forth in the second sliding groove relative to the second sliding rod to limit the rack, so that the sliding stability of the rack is ensured.

And the sliding parts are rotatably assembled with the mounting parts.

By the structure, friction between the sliding piece and the inner wall of the arc-shaped sliding groove can be reduced, and the sliding piece and the arc-shaped sliding groove are protected.

The invention has simple structure and reasonable design, and the arc-shaped pieces can move towards one side far away from the center of the mounting disc or move towards one side close to the center of the mounting disc at the same time, so that the diameter of the transmission piece can be changed randomly to achieve the speed change effect, and the invention is stepless speed change and improves the practicability of the chain wheel.

Drawings

The invention is further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a first schematic structural view of a chain wheel of a continuously variable bicycle according to an embodiment of the present invention;

FIG. 2 is a second schematic structural view of an embodiment of a chain wheel of a continuously variable bicycle of the present invention;

FIG. 3 is a partial schematic structural view of an embodiment of a chain wheel for a continuously variable bicycle of the present invention;

FIG. 4 is a schematic structural diagram of a transmission mechanism of an embodiment of a chain wheel of a continuously variable bicycle of the present invention;

FIG. 5 is a schematic structural view of a mounting plate, a driving member, a disk and a protective cover of an embodiment of a continuously variable bicycle crankset of the present invention;

the main element symbols are as follows:

the mounting plate comprises a mounting plate 1, a first sliding chute 11, a first sliding rod 12, a mounting part 14, an arc-shaped part 15, a meshing tooth 16, a sliding part 2, a circular plate 21, a transmission tooth 22, an arc-shaped sliding chute 3, a rack 301, a screw 31, a handle 32, a mounting seat 33, a threaded groove 34, a protective cover 341, a notch 35, a circular block 351, a first mounting hole 5, a first fixing groove 51, a second mounting hole 52, a second fixing groove 53, a second sliding chute 54, a second sliding rod 55 and a sliding strip 56.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1-5, the invention relates to a stepless speed change bicycle chain wheel, which comprises a mounting disc 1, wherein a plurality of first sliding grooves 11 are uniformly arranged in a ring shape on the mounting disc 1, first sliding rods 12 are arranged in the first sliding grooves 11, mounting pieces 14 are assembled on the first sliding rods 13 in a sliding manner, arc-shaped pieces 15 are fixedly connected on one sides of the mounting pieces 14 extending out of the first sliding grooves 11, meshing teeth 16 are arranged on the outer side surfaces of the arc-shaped pieces 15, the arc-shaped pieces 15 jointly form a transmission piece, sliding pieces 2 extending out of the first sliding grooves 11 are assembled on the other ends of the mounting pieces 14, a disc 21 is assembled on the surface of one side of the mounting disc 1, which is far away from the arc-shaped pieces 15, a driving mechanism matched with the sliding pieces 2 is arranged on the disc 21, a plurality of transmission teeth 22 are uniformly arranged in a ring shape on the outer surface of the disc 21, and a transmission mechanism matched with the transmission teeth 22 is arranged on the mounting disc 1.

The user can drive the disc 21 to rotate clockwise and anticlockwise through the transmission mechanism, when the user drives the disc 21 to rotate clockwise through the transmission mechanism, the user drives the arc chutes 3 to rotate clockwise simultaneously, the inner walls of the arc chutes 3 are abutted to the sliding parts 2, so as to drive the sliding parts 2 to move towards the center of the mounting disc 1 simultaneously, the sliding parts 2 can drive the arc parts 15 to move towards the center of the mounting disc 1 simultaneously, the mounting part 14 slides in the first chute 11 relative to the first sliding rod 12, so as to reduce the diameter of the transmission part, when the user drives the disc 21 to rotate anticlockwise through the transmission mechanism, the user can drive the arc chutes 3 to rotate anticlockwise, and similarly, the arc chutes 3 are abutted to the sliding parts 2 to move towards one side far away from the center of the mounting disc 1, so as to drive the arc parts 15 to move towards one side far away from the center of the mounting disc 1 simultaneously, thus, the diameter of the transmission part can be enlarged; the diameter of driving medium can grow and diminish, can adjust the diameter of driving medium to suitable size according to actual need, and be infinitely variable, improve the practicality of chain wheel.

The driving mechanism comprises a plurality of arc-shaped sliding grooves 3, the arc-shaped sliding grooves 3 are symmetrical with respect to the center of the disc 21, the sliding parts 2 respectively extend into the arc-shaped sliding grooves 3, and the arc-shaped sliding grooves 3 are close to one side of the center of the disc 21 and laterally deflect clockwise away from one side of the center of the disc 21.

Such design, when disc 21 clockwise turning, 3 inner walls of arc spout can drive slider 2 and slide to disc 21 center for first spout 11, thereby it slides to disc 21 to drive arc piece 15, a plurality of arc spouts 3 correspond with if pole slider 2 respectively, thereby when disc 21 clockwise turning, can drive a plurality of arc pieces 15 and slide to disc 21 center simultaneously, with last reason, when disc 21 anticlockwise turning, 3 inner walls butt sliders 2 of accessible arc spout, drive a plurality of arc pieces 15 and remove to keeping away from disc 21 center one side simultaneously.

The transmission mechanism comprises a rack 301, a screw rod 31, a handle 32 and a mounting seat 33, the rack 301 and the mounting disc 1 are assembled in a sliding mode, the rack 301 is meshed with a plurality of transmission teeth 22, a thread groove 34 is formed in one end of the rack 301, the screw rod 31 is in threaded connection with the thread groove 34, one side of the screw rod 31 extends out of the thread groove 34 and is assembled with the mounting seat 33 in a rotating mode, the mounting seat 33 is fixedly connected with the mounting disc 1, and one end of the screw rod 31 extends out of the mounting seat 33 and is fixedly connected with the handle 32.

Because screw rod 31 and thread groove 34 threaded connection to when screw rod 31 rotates to two directions respectively, can drive rack 301 horizontal slip, because rack 301 and a plurality of driving teeth 22 mesh, thereby when rack 301 rotates to two directions respectively, can drive disc 21 clockwise rotation and anticlockwise rotation respectively, the design of mount pad 33 can not take place the displacement when guaranteeing that screw rod 31 can free rotation, the design of handle 32 is convenient for the user to rotate screw rod 31.

The outer surface of the handle 32 is provided with anti-slip lines. The non-slip threads are designed to facilitate rotation of the handle 32 by a user.

The mounting plate 1 is detachably and fixedly connected with a protective cover 341 matched with the disc 21, and the protective cover 341 is provided with a notch 35 matched with the handle 32.

The design of the protective cover 341 can cover the disc 21 and the transmission mechanism to prevent the disc 21 and the transmission mechanism from being directly exposed to the outside and causing damage, and the design of the notch 35 can enable the handle 32 to extend out of the notch 35 to facilitate the rotation of the handle 32.

The mounting disc 1 is equipped with circular block 351 far away from arc 15 one side, and disc 21 rotates with circular block 351 surface to be connected, and the mounting disc 1 middle part is equipped with the first mounting hole 5 with circular block 351 intercommunication, and the 5 inner walls of mounting hole are equipped with a plurality of first fixed slots 51, and safety cover 341 is equipped with 5 position assorted second mounting holes 52 with first mounting hole, and the 52 inner walls of second mounting holes are equipped with the second fixed slot 53 with a plurality of first fixed slots 51 one-to-one.

The first mounting hole 5 and the first fixing groove 51 and the second mounting hole 52 and the second fixing groove 53 are designed to facilitate stable mounting of the present invention on the bicycle axle as a whole.

The mounting plate 1 is provided with a second sliding chute 54 matched with the position of the rack 301, a second sliding rod 55 is arranged in the second sliding chute 54, and the rack 301 is provided with a sliding strip 56 sleeved with the second sliding rod 55.

When the rack 301 slides back and forth, the sliding bar 56 slides back and forth in the second sliding groove 54 relative to the second sliding bar 55 to limit the rack inlet 3, so as to ensure the stability of the sliding of the rack 301.

A number of slides 2 are rotatably mounted with the mounting 14.

With such a structure, friction between the sliding member 2 and the inner wall of the arc-shaped sliding groove 3 can be reduced, and the sliding member 2 and the arc-shaped sliding groove 3 are protected.

The foregoing embodiments are merely illustrative of the principles of the present invention and its efficacy, and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.