TWM643528U - Improved hub drive structure - Google Patents

Abstract

An improved hub drive structure includes: a ratchet device including a first ratchet ring, a second ratchet ring and a ring elastic body, the ring elastic body is equally provided with several tension elastic pieces in the shape of a symmetrical flange, the first and second ratchet rings are respectively provided with several ratchet blocks and several ratchet parts and meshed with each other, the adjacent positions of the first and second ratchet rings are respectively provided with a first convex ring edge and a second convex ring edge, the tension elastic piece has a first free end, and the free end forms a circular arc edge, which is clicked Buckled on the first convex ring edge, a second free end forms a circular arc edge, which can be buckled on the second convex ring edge. In this way, by setting the circular arc edge at the free end of the multi-tension elastic sheet in the shape of a symmetrical flange, the first ratchet ring and the second ratchet ring can be buckled by the tension force of the multi-tension elastic sheet.

Description

Improved hub drive structure

This creation provides a technical field of bicycle hubs, especially an improved hub drive structure, which is provided with a ratchet device and a ring elastic body to equally divide a number of tension elastic pieces in the shape of a symmetrical flange. By setting the arc edge at the free end of the tension elastic piece, the first ratchet ring and the second ratchet ring can be fastened by the tension force of the tension elastic piece. steady state.

Press, referring to shown in Fig. 1, 2, bicycle is mainly provided with a hub between rear wheel and flywheel, is provided with a ratchet group 10 between this hub and flywheel, by stepping on transmission chain and flywheel, power is transmitted to hub through this ratchet, and drives rear wheel to rotate, and ratchet group 10 can also change reverse power into idling. A sleeve is provided on one side of the hub, and two first and second ratchet rings 11 and 12 that can engage with multiple ratchets are arranged between the sleeve and the hub, and the two can be bounced or reset by a first compression spring 13 and a second compression spring 14 .

But, its first compression spring 13 and the second compression spring 14 squeeze respectively first and second ratchet rings 11, 12 respectively with unstable thrust, and it needs Considering the contact surface and transmission force, there are quite a lot of variables, and then the instability of its elasticity and restoring force is high, and the concentricity is poor, which will cause the transmission force to cause idling or other wrong actions, and there will be instability and discomfort when riding, and even more likely to cause dangerous riding.

Therefore, in view of the problems existing in the above-mentioned conventional structures, how to develop a more ideal and practical innovative structure is what consumers are eagerly looking forward to, and it is also the goal and direction that related businesses must work hard to develop breakthroughs.

In view of this, the author has been engaged in the manufacturing, development and design of related products for many years. After careful design and careful evaluation for the above-mentioned goals, he finally obtained a truly practical creation.

The main purpose of this creation is to provide an improved hub drive structure. It is equipped with a ratchet device and a circular elastic body to equally divide the number of tension elastic pieces in the shape of a symmetrical flange. By setting the arc edge of the free end of the tension elastic piece, the first ratchet ring and the second ratchet ring can be buckled by the tension force of the tension elastic piece.

In order to achieve the above-mentioned purpose, this creation provides an improved hub drive structure, which includes: a hub with a mandrel that runs through the pivot; a sleeve with one end connected to a flywheel; The ratchet device includes a first ratchet ring, a second ratchet ring and a ring elastic body, the ring elastic body is equally provided with several tension elastic pieces in the shape of a symmetrical flange, the first ratchet ring is provided with several ratchet blocks on the side facing the second ratchet ring, and the second ratchet ring is provided with several ratchet parts on the side facing the first ratchet ring, the ratchet parts and the ratchet blocks mesh with each other, the first ratchet ring is provided with a first flange near the second ratchet ring, and the second ratchet ring is provided with a The second convex ring edge, the number of tension elastic pieces have a first free end, the free end forms a circular arc edge, which can be buckled on the first convex ring edge, and the second free end, which forms a circular arc edge, can be buckled on the second convex ring edge, so that the first ratchet ring and the second ratchet ring can be fastened by the tension force of the number tension elastic piece, and the first and second ratchet rings can be effectively improved and separated from each other. The return meshing state is concentric, which keeps the driving efficiency in the best stable state.

Regarding the technology, means and effects used in this creation, a preferred embodiment will be described in detail with the help of the drawings. It is believed that the above-mentioned purpose, structure and characteristics of this creation should be able to gain a deep and specific understanding.

[knowledge]

10: ratchet set

11: First ratchet ring

12: Second ratchet ring

13: The first compression spring

14: Second compression spring

[this creation]

20: hub

21: mandrel

30: Sleeve

40: ratchet device

41: First ratchet ring

411: ratchet block

412: the first convex ring

42: second ratchet ring

421: Ratchet

422: second convex ring

43: Ring elastic body

431: tension elastic sheet

4311: first free end

R1: arc edge

4312: Second free end

R2: arc edge

[Fig. 1] is a three-dimensional schematic diagram of the meshing state of the conventional ratchet set.

[Fig. 2] is a three-dimensional schematic diagram of a separated state of a conventional ratchet set.

[Fig. 3] is a three-dimensional schematic diagram of the hub of one embodiment of this creation.

[Fig. 4] is a three-dimensional exploded schematic diagram of the flower drum part of one embodiment of this creation.

[Fig. 5] is a cutaway view of the flower drum part of one embodiment of this creation.

[Fig. 6] is a three-dimensional exploded schematic view of the ratchet device of one embodiment of the invention.

[Fig. 7] is a three-dimensional schematic view of the ratchet device of one embodiment of the invention.

〔the 8th figure〕 is the plane sectional view of the ratchet device of one embodiment of this creation.

This creation is a designer who provides an improved hub drive structure.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and functions of this creation, the implementation methods and drawings are described in detail as follows:

Referring to the 3rd to 8th figures, this creation provides a hub drive structure improvement, including: a hub 20, the hub 20 is pivotally provided with a mandrel 21; The second ratchet ring 42 and an annular elastic body 43, the annular elastic body 43 is equally divided with a number of tension elastic pieces 431 in the shape of a symmetrical flange, and the first ratchet ring 41 faces the second ratchet ring 43. One side of the second ratchet ring 42 is provided with several ratchet blocks 411, the second ratchet ring 42 is provided with several ratchet parts 421 on the side facing the first ratchet ring 41, and the ratchet part 421 and the ratchet block 411 are mutually meshed. Located between the first ratchet ring 41 and the second ratchet ring 42, the tension elastic piece 431 has a first free end 4311 forming a circular arc edge R1, which can be buckled on the first convex ring edge 412, and a second free end 4312 forms a circular arc edge R2, which can be buckled on the second convex ring edge 422. The restoring force and concentricity of the meshing can be restored to the original state. When the steering is different, it has the elasticity of mutual disengagement. It is not only easy to assemble, position and replace, but also effectively improves the concentricity between the first and second ratchet rings 41 and 42.

The hub drive structure is improved, wherein the number of the annular elastic body 43 is the tension elastic piece 431 , and it is best to be provided with five tension elastic pieces 431 .

The aforementioned hub drive structure is improved, wherein the first and second free ends 4311 and 4312 of the tensile elastic piece 431 can be set as slightly outwardly expanded circular arc edges R1 and R2, so that the first and second ratchet rings are in the same concentricity when they disengage from each other and return to the meshing state, so that the reverse elastic and return actions are smoother, and the driving efficiency can be kept in the best stable state.

It can be seen from the above that the improvement of the hub drive structure of this creation is indeed the first in the industry and meets the novelty requirements of the new patent, and its comprehensive innovative design meets the progressive requirements of the new patent, and it is equipped with a ratchet device. A ring elastic body is equally provided with a flange-shaped tension elastic piece. The ratchet rings are both disengaged and restored to the concentric state, which can also improve the driving efficiency and keep the elasticity and restoring force in the best stable state, which is in line with better industrial applicability.

The above is a specific description of the technical features of this creation for the preferred embodiment of this creation; however, those who are familiar with this technology should be able to make changes and modifications to this creation without departing from the spirit and principles of this creation, and such changes and modifications should be covered in the scope defined by the scope of the patent application below.

To sum up, this creation provides an improved hub drive structure, which has indeed achieved all the purposes of this creation. In addition, the spatial form of its combined structure has not been seen in similar products, nor has it been disclosed before the application.

20: hub

21: mandrel

30: Sleeve

40: ratchet device

Claims (2)

An improved hub drive structure, comprising: a hub, the hub is penetrating with a mandrel; a sleeve, one end of the sleeve is fixedly connected with a flywheel of a bicycle; a ratchet device is provided between the hub and the sleeve; the ratchet device includes a first ratchet ring, a second ratchet ring and a ring elastic body, and the ring elastic body is equally provided with several tension elastic pieces in the shape of a symmetrical flange; The side of the second ratchet ring facing the first ratchet ring is provided with several ratchet pieces, the ratchet piece and the ratchet block are mutually meshed, the first ratchet ring is provided with a first raised ring edge near the second ratchet ring, the second ratchet ring is provided with a second raised ring edge near the first ratchet ring, the tension elastic sheet is arranged between the first ratchet ring and the second ratchet ring, and the tension elastic sheet has a first free end to be buckled on the first raised ring edge, and a second free end to be buckled on the second raised ring edge , the first and second ratchet rings are disengaged from each other and restored to the original state of meshing with the same concentricity through the tension buckle of the elastic sheet with several tensions, so that the driving efficiency is kept in the best stable state. The improved hub drive structure as described in Claim 1, wherein the first and second free ends of the tensile elastic piece can be set as circular arc edges slightly expanding outward.

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