TWM451317U - Bicycle chain ring structure improvement - Google Patents

Description

Bicycle gear plate structure improvement

This creation is about a "sports structure improvement for bicycles", especially one that is mounted on a bicycle for power transmission.

According to the bicycle, not only can the bicycle be used for transportation and fitness, but also because the bicycle needs to rely on the human foot to advance, so there is no problem of exhaust gas or additional fuel. Because the bicycle has so many benefits, the bicycle The sporting atmosphere has been able to hit the world in recent years, and governments are also happy to see the booming of their industries. They can use bicycles to suppress the use of steam and locomotives, and there are many components on the bicycle. It is an indispensable item.

The conventional bicycle toothed disc is as shown in the fourth and fifth figures. The toothed disc (20) mainly has a disc body (21) and a plurality of convex teeth (22), and the disc body (21) is a disc. And the convex tooth (22) protrudes around the outer edge of the disc body (21). When it is used, the toothed disc (20) is mounted by using a through hole (23) in the center of the disc body (21). On the crank of the bicycle, the gear is meshed with the chain by the toothed disc (20) for power transmission.

However, the conventional structure as described above still has the following problems in practical applications: the toothed disc (20) is completed by casting, so after grinding, polishing, polishing, etc. are required. This leads to a large number of process procedures, and the cost is increased.

Therefore, how to develop the shortcomings of the above-mentioned bicycle bicycle chain Improvement is really the goal of the relevant industry to work hard to develop. This creator has the idea of thinking and creation, and has designed it with many years of experience. After many discussions and trials of sample tests, and many revisions and improvements, Launched this creation.

Conventional toothed discs are completed by casting, so it is necessary to carry out grinding, polishing and other procedures after the manufacture, which will lead to a large number of process procedures, and the cost will be increased. This is the technical problem to be solved.

The present invention provides an improved bicycle sprocket structure comprising: a second disk body and a spacer member, wherein the disk body is provided with an inner ring portion and an outer ring portion, and between the inner ring portion and the outer ring portion A plurality of spokes are connected, and a plurality of convex teeth are protruded around the outer edge of the outer ring portion, and since the disc system is stamped by a punching machine, the trouble of grinding and polishing can be omitted after the preparation, and the spacer is a cylinder. The system is sandwiched between the two disc bodies, and the inner inner ring portion is welded and combined, and the spokes of the two disc bodies are gradually brought closer together, so that the outer ring portions of the two disc bodies can be abutted to apply points on the outer ring portion. Welding, and the use of spacers to connect the two disc bodies, the sprocket can be reinforced, and form a three-dimensional shape, thereby obtaining a bicycle sprocket structure improvement.

This creation provides an improved bicycle gear structure, and the disc system is punched by punching. In order to eliminate the need for grinding and polishing after the production, the production cost can be reduced.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of this creation, please refer to the following [Examples of Simple Description] for a detailed description of the following:

First, as shown in the first to third figures, the toothed disc (10) includes: a second disc body (11) and a spacer member (12), wherein the disc body (11) is provided with a The inner ring portion (111) and the outer ring portion (112), the inner ring portion (111) and the outer ring portion (112) are connected with a plurality of spokes (113), and the outer ring portion (112) protrudes around the outer edge. Most of the protruding teeth (114), and because the disk body (11) is stamped by a punching machine, the trouble of grinding and polishing can be omitted after the manufacture, the spacer (12) is a cylinder, and the system is sandwiched between Between the two disc bodies (11), and welding the inner inner ring portion (111), the spokes (113) of the two disc bodies (11) gradually close together, so that the outer ring portion (112) of the second disc body (11) can Adhering to each other, the spot welding is applied to the outer ring portion (112), and the two disc bodies (11) are connected by the spacers (12), so that the toothed disc (10) can be reinforced and constitute a solid Form.

In actual use, the inner ring portion (111) and the through hole formed in the spacer (12) are used to mount the toothed disc (10) on the crank of the bicycle, and the sprocket wheel (10) and the chain are used. Engage for power transmission.

By the structure of the above specific embodiment, the following benefits can be obtained: the disk body (11) It is stamped by punching, so it can save the trouble of grinding and polishing after the production, so that the production cost can be reduced.

In summary, this creation has indeed achieved a breakthrough structural design, with improved creative content, while at the same time achieving industrial use and progress, and this creation has not been seen in any publication, but also novel, when In accordance with the provisions of the relevant laws and regulations of the Patent Law, a new type of patent application is filed according to law, and the examination authority of the bureau is required to grant legal patent rights.

Only the above-mentioned ones are only preferred embodiments of the present invention, and the scope of the implementation of the creation cannot be limited by them; that is, the equal changes and modifications made by the applicants in accordance with the scope of the patent application for this creation should still belong to the creation. Within the scope of the patent.

This creative part:

(10)‧‧‧ toothed disc

(11)‧‧‧ dish

(111)‧‧‧ Inner Ring Department

(112) ‧‧‧Outer Rings

(113) ‧ ‧ spokes

(114)‧‧‧ convex teeth

(12) ‧‧‧ spacers

Conventional part:

(20)‧‧‧ toothed disc

(21)‧‧‧ dishes

(22)‧‧‧ convex teeth

(23)‧‧‧through holes

The first picture: a three-dimensional combination of the creation.

The second picture: is a three-dimensional exploded view of the creation.

The third picture: a sectional view of the combination of the creation.

Figure 4: A perspective view of a conventional structure.

Figure 5: A cross-sectional view of a conventional structure.

(10)‧‧‧ toothed disc

(11)‧‧‧ dish

(111)‧‧‧ Inner Ring Department

(112) ‧‧‧Outer Rings

(113) ‧ ‧ spokes

(114)‧‧‧ convex teeth

(12) ‧‧‧ spacers

Claims (1)

A bicycle gear plate structure is improved, the tooth plate comprises: a second disk body and a spacer, wherein: the disk body is provided with an inner ring portion and an outer ring portion, and the inner ring portion and the outer ring portion are connected with a majority The spoke is protruded around the outer edge of the outer ring portion and has a plurality of convex teeth, and the disc system is stamped by a punching machine; the spacer is a cylinder, and the system is sandwiched between the two disc bodies, and the inner inner ring portion is welded and combined. The ribs of the two discs are gradually brought closer together, so that the outer ring portions of the two disc bodies can be abutted to apply spot welding on the outer ring portion, and the spacers are used to connect the two disc bodies, so that the sprocket disc can be Get reinforcement and form a three-dimensional form.