CN218229305U

CN218229305U - Speed regulation structure of bicycle

Info

Publication number: CN218229305U
Application number: CN202222261170.8U
Authority: CN
Inventors: 鄢志康
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-01-06
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses a speed governing structure of bicycle, including carriage, flexible groove, flexible piece, support ring and connection tooth, flexible groove has been seted up to the inside of carriage, flexible groove has six about the axis central symmetry distribution of carriage, and the inside in flexible groove is provided with flexible piece, and flexible piece is sliding construction in flexible groove, the support ring is installed at the top of flexible piece. This speed governing structure of bicycle is provided with the flexible piece of liftable, highly carry out the synchro-control through a plurality of flexible pieces, can make the circumference radius that the connection tooth at flexible piece top surrounds change, and then adjust front and back drive gear's diameter proportion, reach the purpose to the bicycle speed governing, at the in-process of speed governing, needn't adjust the position of carriage, keep the straightness nature of chain on the front and back wheel, prevent to increase the friction to the chain because of the removal of carriage, reduced the horizontal atress of chain, reduce the cracked phenomenon of chain emergence.

Description

Speed regulation structure of bicycle

Technical Field

The utility model relates to a speed governing structure technical field specifically is a speed governing structure of bicycle.

Background

The front wheel and the rear wheel of the variable speed bicycle are respectively provided with a plurality of gears with different diameters, and the rotation speed of the rear wheel can be slowed down if the diameter of the gear on the rear hub of the bicycle is increased under the condition that the rotation speed of pedals is kept unchanged from the physical viewpoint; conversely, if the diameter of the gear on the rear hub of the bicycle is reduced, the rotational speed of the rear wheel is increased. Therefore, basically, the bicycle speed change principle is that the diameters of front and rear gears are changed to realize different size matching, so that the speed of the bicycle is changed, the Chinese invention CN201810120582.5 discloses a bicycle speed regulation device, a sliding rod is utilized to push a first conical movable wheel to move close to or far away from a first conical fixed wheel, so that the rotating speed of a transmission belt between two conical wheels is regulated, and finally the rotating speed of a driving wheel is regulated.

We have therefore proposed a speed governing structure for a bicycle in order to solve the problems set forth above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a speed governing structure of bicycle to current when using the cone pulley to carry out the speed governing on the existing market that the solution above-mentioned background art provided, the relative position of drive wheel around can changing makes drive chain take place to incline, to the friction increase of chain, causes the cracked problem of chain easily.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a speed governing structure of bicycle, includes carriage, flexible groove, flexible piece, support ring and connection tooth, flexible groove has been seted up to the inside of carriage, flexible groove has six about the axis central symmetry distribution of carriage, and the inside in flexible groove is provided with flexible piece, and flexible piece is sliding structure in flexible groove, the support ring is installed at the top of flexible piece, and the centre of a circle of the circle at support ring place coincides mutually with the centre of a circle of carriage place circle, the connection tooth is installed at the top of support ring, connect the tooth and transversely arrange the distribution on the top surface of support ring.

Preferably, the middle mounting of carriage has the erection column, the length of erection column is greater than the thickness of carriage, and the middle part of erection column has seted up the mounting hole, the mounting groove has been seted up on the inner wall of mounting hole.

Preferably, fixed case is installed to the bottom in flexible groove, the rotation hole has been seted up at the top of fixed case, the inside in rotation hole is provided with the dwang, and the external screw thread has been seted up at the top of dwang, the bottom of dwang is connected on the motor, the motor is located inside the fixed case, the motor links to each other with the power supply box electrical property, the power supply box is located the inside of braced frame.

Preferably, the middle part of the rotating hole is provided with a limiting groove, the inside of the limiting groove is provided with a rotating block, the rotating block can freely rotate in the limiting groove, and the rotating block is installed on the rotating rod.

Preferably, a positioning rod is installed on the bottom surface of the telescopic groove, the top of the positioning rod is inserted into the positioning groove, the positioning groove is formed in the telescopic block, and the inner diameter of the positioning groove is equal to the outer diameter of the positioning rod.

Preferably, the thread groove has been seted up to the inside of flexible piece, the internal diameter of thread groove equals the external diameter of dwang, be threaded connection between dwang and the flexible piece, the length of thread groove equals the length of constant head tank.

Compared with the prior art, the beneficial effects of the utility model are that: the speed-regulating structure of the bicycle is provided with a speed-regulating mechanism,

(1) The lifting telescopic blocks are arranged, the circumferential radius surrounded by the connecting teeth at the tops of the telescopic blocks can be changed by synchronously adjusting the heights of the telescopic blocks, the diameter proportion of the front and rear transmission gears is adjusted, and the speed of the bicycle is adjusted;

(2) Be provided with the dwang, be connected through the meshing between dwang and the flexible piece, adjust the position of flexible piece in flexible inslot, make the height of support ring adjust gradually to carry out the fixed stay through threaded connection, make the support ring more stable to the support of connecting the tooth, make the device more extensive to speed adjustment's scope.

Drawings

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

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

FIG. 3 is a schematic view of the vertical cross-section structure of the present invention;

fig. 4 is the utility model discloses flexible piece erects cuts open structure schematic diagram.

In the figure: 1. a support frame; 2. a telescopic groove; 3. a telescopic block; 4. a support ring; 5. a connecting tooth; 6. mounting a column; 7. mounting holes; 8. a stationary box; 9. rotating the hole; 10. rotating the rod; 11. a motor; 12. a power supply box; 13. a limiting groove; 14. rotating the block; 15. positioning a rod; 16. positioning a groove; 17. a thread groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a speed governing structure of bicycle, including carriage 1, flexible groove 2, flexible piece 3, support ring 4, connect tooth 5, erection column 6, mounting hole 7, fixed case 8, rotation hole 9, dwang 10, motor 11, power supply box 12, spacing groove 13, turning block 14, locating lever 15, constant head tank 16 and thread groove 17, flexible groove 2 has been seted up to carriage 1's inside, flexible groove 2 has six about the axis central symmetry distribution of carriage 1, and the inside of flexible groove 2 is provided with flexible piece 3, flexible piece 3 is sliding structure in flexible groove 2, support ring 4 is installed at the top of flexible piece 3, the centre of a circle of the circle of support ring 4 place coincides with the centre of a circle of the circle of carriage 1 place, connect tooth 5 is installed at the top of support ring 4, connect tooth 5 horizontal range distribution on the top surface of support ring 4.

The mid-mounting of carriage 1 has erection column 6, and the length of erection column 6 is greater than the thickness of carriage 1, and the middle part of erection column 6 has seted up mounting hole 7, has seted up the mounting groove on the inner wall of mounting hole 7, conveniently fixes carriage 1 through mounting hole 7.

Fixed case 8 is installed to the bottom of flexible groove 2, rotation hole 9 has been seted up at the top of fixed case 8, the inside of rotating hole 9 is provided with dwang 10, support dwang 10's rotation through rotating hole 9, the external screw thread has been seted up at the top of dwang 10, the bottom of dwang 10 is connected on motor 11's output, motor 11 installs inside fixed case 8, a plurality of motors 11 pass through control switch and power supply box 12 electrical property and link to each other, can drive a plurality of motor synchronous rotations through control switch, guarantee flexible piece 3 also can synchronous movement, power supply box 12 is located the inside of carriage 1, provide power for motor 11's rotation.

The limiting groove 13 is formed in the middle of the rotating hole 9, the rotating block 14 is arranged inside the limiting groove 13, the rotating block 14 can freely rotate inside the limiting groove 13, and the rotating block 14 is installed on the rotating rod 10 to prevent the rotating rod 10 from lifting.

Install locating lever 15 on the bottom surface of telescopic slot 2, in locating lever 15's top inserted to constant head tank 16, constant head tank 16 seted up on flexible piece 3, the internal diameter of constant head tank 16 equals the external diameter of locating lever 15, supports flexible piece 3's slip through locating lever 15.

Thread groove 17 has been seted up to flexible piece 3's inside, and the internal diameter of thread groove 17 equals the external diameter of dwang 10, is threaded connection between dwang 10 and the flexible piece 3, and the length of thread groove 17 equals the length of constant head tank 16, and rotation through dwang 10 promotes flexible piece 3 and goes up and down.

The working principle is as follows: when using the speed governing structure of this bicycle, at first fix the device on the footboard system of bicycle front wheel through mounting hole 7 in the erection column 6, also can install the device on the rear wheel simultaneously, consolidate the connection of erection column 6 through the mounting groove, install drive chain in the outside of support ring 4, be connected with drive chain through connecting tooth 5, can make the rear wheel follow the rotation through the rotation of carriage 1.

When speed is required to be adjusted, the power box 12 can supply power to the motor 11, the motor 11 drives the rotating rod 10 to rotate, the rotating rod 10 drives the rotating block 14 to rotate in the limiting groove 13, the position of the rotating rod 10 is limited through the rotating block 14, the rotating rod 10 drives the telescopic block 3 to descend through the thread groove 17, the telescopic block 3 descends in the telescopic groove 2, the telescopic block 3 slides on the positioning rod 15 through the positioning groove 16, the descending of the telescopic block 3 is prevented from deflecting through the positioning rod 15, the telescopic block 3 further drives the supporting ring 4 to descend, the supporting ring 4 drives the connecting teeth 5 to descend, the circumferential radius surrounded by the connecting teeth 5 is reduced, a speed adjusting effect is achieved on the bicycle, if the device is installed on the rear wheel at the same time, the circumferential radius surrounded by the connecting teeth 5 of the rear wheel can be increased, so that the speed adjusting effect of the device is enhanced, and the contents which are not described in detail in the specification belong to the prior art which are well known to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a speed governing structure of bicycle, includes carriage (1), flexible groove (2), flexible piece (3), support ring (4) and connection tooth (5), its characterized in that: flexible groove (2) have been seted up to the inside of carriage (1), flexible groove (2) have six about the axis central symmetry distribution of carriage (1), and the inside in flexible groove (2) is provided with flexible piece (3), and flexible piece (3) are sliding structure in flexible groove (2), support ring (4) are installed at the top of flexible piece (3), and the centre of a circle of the circle at support ring (4) place coincides mutually with the centre of a circle of carriage (1) place circle, connect tooth (5) are installed at the top of support ring (4), connect tooth (5) and transversely arrange the distribution on the top surface of support ring (4).

2. A speed adjusting structure for a bicycle according to claim 1, wherein: the utility model discloses a mounting structure, including support frame (1), erection column (6) are installed to the mid-mounting of support frame (1), the length of erection column (6) is greater than the thickness of support frame (1), and mounting hole (7) have been seted up at the middle part of erection column (6), the mounting groove has been seted up on the inner wall of mounting hole (7).

3. A speed adjusting structure of a bicycle according to claim 1, wherein: fixed case (8) are installed to the bottom in flexible groove (2), rotation hole (9) have been seted up at the top of fixed case (8), the inside of rotating hole (9) is provided with dwang (10), and the external screw thread has been seted up at the top of dwang (10), the bottom of dwang (10) is connected on motor (11), motor (11) are located inside fixed case (8), motor (11) link to each other with power supply box (12) electrical property, power supply box (12) are located the inside of carriage (1).

4. A speed adjusting structure for a bicycle according to claim 3, wherein: limiting groove (13) have been seted up at the middle part of rotating hole (9), the inside of limiting groove (13) is provided with turning block (14), and turning block (14) can be at inside free rotation in limiting groove (13), turning block (14) are installed on dwang (10).

5. A speed adjusting structure of a bicycle according to claim 1, wherein: install locating lever (15) on the bottom surface of flexible groove (2), the top of locating lever (15) inserts in constant head tank (16), constant head tank (16) are seted up on flexible piece (3), and the internal diameter of constant head tank (16) equals the external diameter of locating lever (15).

6. A speed adjusting structure for a bicycle according to claim 1, wherein: thread groove (17) have been seted up to the inside of flexible piece (3), the internal diameter of thread groove (17) equals the external diameter of dwang (10), be threaded connection between dwang (10) and flexible piece (3), the length of thread groove (17) equals the length of constant head tank (16).