TWM548130U - Sprocket structure - Google Patents

Description

Gear plate structure

The present invention relates to a toothed disc structure, and more particularly to a toothed disc structure applied to a bicycle.

According to the bicycle, the power output of the bicycle is connected through the pedal and the chain and the toothed disc. Therefore, the connection between the chain and the toothed disc is especially important for the safety and advancement of the bicycle. However, it is difficult to maintain the chain with the toothed disc, especially riding. In the rugged terrain, the chain tension may be subject to dramatic changes and strong movements, especially in order to stabilize the transmission chain and the toothed disc. Currently, there is a toothed disc structure on the market. Please refer to pages 9, 10 and 11. The figure includes a toothed disc body 30 for engaging a drive chain 40. The toothed disc body 30 is formed with a plurality of first latching teeth 31 and second latching teeth 32 around the circumference. The first and second latching teeth are formed. The total number of 31 and 32 is a double number, and the first and second latching teeth 31 and 32 are alternately arranged on the outer circumference of the toothed disc body 30, and the second latching teeth 32 are provided with convex portions 321 so that the second card is provided. The tooth 32 has a larger thickness than the first latch 31. When the crankshaft body 30 is subjected to the crank rotation and the transmission chain 40, the transmission chain 40 is pulled by the chainring body 30 and sequentially engaged with the first gear. Two latches 31, 32, using the same The second latch 32 is provided with a convex portion 321 to enhance the strength of the connection between the toothed disc body 30 and the transmission chain 40, thereby ensuring the safety of the power connection and the riding safety.

Looking at the above-mentioned conventional structure is not difficult to find that there are still some shortcomings, mainly the original The reason is as follows: according to the conventional toothed disc body 30, the second latching teeth 32 are provided with convex portions 321 for increasing the thickness, thereby improving the strength of the connection between the toothed disc body 30 and the transmission chain 40 to overcome the riding. The power generated by the rugged terrain is difficult to connect, but the lengths of the first and second latching teeth 31, 32 are equal, so that the timing of the engagement of the first latching teeth 31 and the second latching teeth 32 with the transmission chain 40 is the same. Since the first latch 31 is thin, it can be accurately engaged with the drive chain 40, and the second latch 32 is collided and frictioned by the convex portion 321 so as to be easily engaged with the drive chain 40, and cannot be accurately carded through the first latch 31. At the same time, the effect of guiding the correction of the second latch 32 is achieved, which causes the drive chain 40 to have a disengagement from the toothed disc body 30 due to the collision friction, and the second latch 32 of the chainring body 10 is also used for long-term use. The wear and thinning greatly reduce the expected efficiency and service life of the sprocket body 30, and there is a lack of practicality.

In view of this, the creator has been engaged in the manufacturing development and design experience of related products for many years. After detailed design and careful evaluation, the author has finally achieved a practical and practical creation.

The technical problem to be solved by the present invention is to provide a toothed disc structure for the above-mentioned shortcomings existing in the prior art.

A toothed disc structure comprising a toothed disc body, and a plurality of first and second latches extending along the outer circumference of the toothed disc, the first and second latches are staggered in sequence The first latching teeth are thicker than the second latching teeth, and form a square body having a thickness at the upper end portion, and the second latching teeth are longer than the first latching teeth, and the second latching teeth are Both sides are thinned to have a retracting plane, and by the above structure, the crucible is configured to constitute a toothed disc structure.

When the toothed disc body is coupled with the drive chain, the second latch has a longer characteristic than the first latch, so that the second latch and the inner link are fast Engage and guide the effect of the correction, at the same time guiding the drive chain and enabling the first latch to be surely caught in the outer chain space of the outer link, avoiding the deviation of the drive chain and causing the first latch to wear, and When the first latching tooth is engaged in the chain space outside the transmission chain, the position between the inner link and the second latching tooth is positively guided to achieve the effect of circulating the positive guide, and then the first latching tooth is compared with the second latching tooth. The thick characteristic enhances the engagement strength between the toothed disc body and the transmission chain, thereby ensuring the engagement state of the toothed disc body and the transmission chain, and greatly improving the power connection force and the pedaling stability.

[this creation]

10‧‧‧ tooth plate body

11‧‧‧First card tooth

111‧‧‧Box

12‧‧‧second card teeth

121‧‧‧Retracted plane

20‧‧‧Drive chain

21‧‧‧Outer link

211‧‧‧Outer chain board

212‧‧‧Outer chain space

22‧‧‧Internal link

221‧‧‧ Inner chain board

222‧‧‧Internal space

[study]

30‧‧‧ tooth plate body

31‧‧‧First card tooth

32‧‧‧second card teeth

321‧‧‧ convex

40‧‧‧Drive chain

Figure 1: This is a perspective view of the creation.

Figure 2: This is the front view of the creation.

Fig. 3 is a cross-sectional view taken along the line A-A of Fig. 2 for the creation of the present invention.

Fig. 4 is a cross-sectional view taken along the line B-B of Fig. 2 for the creation of the present invention.

Figure 5: A schematic view of the disc shape of the creation.

Figure 6: This is a partial enlarged view of the first and second teeth of the creation.

Figure 7: This is a schematic diagram of the state of engagement between the creation and the drive chain.

Figure 8: This is a schematic diagram of the state of engagement between the creation and the drive chain.

Fig. 9 is a schematic view showing the cooperation of a conventional toothed disc body and a chain.

Fig. 10 is a partially enlarged schematic view of a conventional toothed disc body.

Figure 11 is an enlarged schematic view of a conventional toothed disc body and a chain.

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 [Simplified Description of the Drawings] for details: First, referring to Figures 1 and 2, in conjunction with Figures 3 and 4, a sprocket structure includes a sprocket body 10 and a plurality of first teeth extending along the periphery of the sprocket body 10. 11 and the second latching teeth 12, the first and second latching teeth 11 and 12 are sequentially staggered, wherein the first latching teeth 11 are thicker than the second latching teeth 12 and form a top end portion. The second block 12 is longer than the first latch 11 and both sides of the second latch 12 are thinned to have a retracted plane 121.

The above-mentioned toothed disc body 10 has an elliptical disk shape.

Wherein, the above-mentioned toothed disc body 10 can be more like a disk shape, as shown in FIG.

When the structure is actually used, the sprocket body 10 is matched with a transmission chain 20 as shown in Figures 6, 7, 8, and 9. The transmission chain 20 is composed of a plurality of outer links 21 and inner links 22 Interleaved in series, the outer links 21 have two parallel parallel outer links 211, and an outer chain space 212 is formed between the outer outer links 211, and the inner links 22 have two phases. The inner chain plate 221 is parallel, and an inner chain space 222 is formed between the two inner link plates 221, and the outer link portions 21 are sandwiched by the two outer link plates 211 against the inner inner link plates 22 221, the gap between the outer chain spaces 212 is greater than the inner chain space 222, and when the toothed disc body 10 is used with the drive chain 20, the first latches 11 are embedded in the outer links of the outer links 21 In the space 212, the second latches 12 are embedded in the inner chain space 222 of the inner links 22, thereby transmitting the second card when the chainring body 10 is coupled with the drive chain 20 The characteristic that the teeth 12 are longer than the first latching teeth 11 allows the second latching teeth 12 to quickly engage with the inner link 22 and guide the correcting effect, while guiding the transmission chain 20 and The first latch 11 can be surely engaged in the outer chain space 212 of the outer link 21, avoiding the transmission chain 20 from being offset and causing the first latch 11 to wear, and when the first latch 11 is engaged in the drive chain 20 When the outer chain space 212 is located, the position between the inner link 22 and the second latch 12 is adjusted to achieve the effect of circulating the positive guide. The characteristic that the first latch 11 is thicker than the second latch 12 enhances the engagement strength between the sprocket body 10 and the transmission chain 20, thereby ensuring the engagement state of the sprocket body 10 and the transmission chain 20, and greatly enhancing the power. The connection force and the stability of the pedaling.

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, the application for the creation of a patent shall be filed according to law, and the examination of the member of the Bureau shall be granted a legal patent right.

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.

10‧‧‧ tooth plate body

11‧‧‧First card tooth

111‧‧‧Box

12‧‧‧second card teeth

121‧‧‧Retracted plane

Claims (3)

A toothed disc structure comprising a toothed disc body, and a plurality of first and second latches extending along the outer circumference of the toothed disc, the first and second latches are staggered in sequence The first latching teeth are thicker than the second latching teeth, and form a square body having a thickness at the upper end portion, and the second latching teeth are longer than the first latching teeth, and the second latching teeth are Both sides are thinned to have a retracted plane. The toothed disc structure according to claim 1, wherein the toothed disc body has a disk shape. The toothed disc structure according to claim 1, wherein the toothed disc body is in the shape of an elliptical disc.