KR20080051868A - Silent chain which can be drived at two faces - Google Patents

Abstract

A silent chain capable of driving at two faces is provided to decrease noise caused by contacting teeth of a sprocket with pin of chain by engaging an independent plate between inner plates. A silent chain capable of driving at two faces comprises plural inner plates(14) having teeth, a guide plate fixing the inner plates from the outside, an independent plate(16), and pins connecting the plates each other. The independent plate is assembled between the inner plates and has the teeth. The silent chain capable of driving at two faces transfers or receives power to be slid to a sprocket having the teeth. The independent plate shaped like a disc, which is positioned at the center of the plural inner plates, includes holes wherein the pins are fitted.

Description

SILENT CHAIN WHICH CAN BE DRIVED AT TWO FACES}

1A and 1B are perspective views showing a conventional silent chain;

2 illustrates a timing belt system including backside driving;

3 shows a timing chain system including a two-sided drive;

4 is a perspective view of a silent chain according to the present invention;

5 is an exploded perspective view of the chain portion in the silent chain according to the present invention; And,

6 is a view showing a double-sided driving of the silent chain and the sprocket according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: chain portion 12: guide plate

14: inner plate 14a: chi

16: single plate 16a: chi

18: pin 19: through hole

20: Sprocket 20a: Chi

The present invention relates to a silent chain capable of driving on both sides. More specifically, the present invention relates to a silent chain capable of effectively reducing noise and enabling both sides to be driven, thereby improving freedom of design, and enabling both sides to be easily applied to a timing chain system.

Timing drive systems include belt drive systems and chain drive systems. Chain systems, which are more durable than conventional belt systems, are rapidly expanding in applications to extend the replacement cycle and life of automotive parts.

The chains applied to these chain systems include bush chains, roller chains, and silent chains. Silent chains are developed to reduce noise that is a problem in bush chains. see.

In general, the main cause of chain noise is the impact generated during the chaining and sprocket meshing process.Silent chains distribute the meshing impact energy by friction, making the impact energy small.

Figure 1a is a perspective view of a portion of a silent chain 100 that is generally used in the structure, the structure is a link plate 106 having teeth formed on both sides alternately overlap each other in the longitudinal direction to the pin 102 It is a structure that is connected by, and the outer side of the overlapping link plate 106 is a structure wrapped around the guide plate 104, the number of the link plate 106 is determined according to the load to be delivered.

As shown in FIG. 2, the sprocket 110, which receives the power or transmits power by winding the silent chain 100 as described above, is engaged with the teeth formed on the link plate 106 of the silent chain 100. It is a structure in which a denture is formed, and its basic shape is the same as a general spur gear.

In the silent chain 100 and the sprocket 110 as described above, the teeth formed on the link plate 106 of the silent chain 100 and the teeth formed on the sprocket 110 are mainly bitten with each other in a similar pattern to the power transmission state of the gears. By transmitting power through the sliding contact, it is possible to reduce the noise than the conventional chain drive device that generated noise while the teeth of the sprocket impact the pin of the chain.

In chain systems where noise is more problematic than belt systems, the application of silent chains is expanding. Silent chains, however, are restricted in layout in the design of drive systems due to the inability to back drive on the belt (see FIG. 2) or to drive on both sides of the bush chain (see FIG. 3) due to teeth designed for noise.

The initial design takes this into account, but there are many limitations to applying a silent chain to engines already developed to improve noise. For example, the U-engine developed by the applicant can be applied to a silent chain since there is no part that is driven on both sides, but in the case of an S engine (see FIG. 3), there is a problem that the silent chain is not applicable.

In order to solve this problem, a technique such as Japanese Laid-Open Patent Publication No. 7-10587 has been proposed (see Fig. 1b), but it is a structure in which links are arranged only at both ends, and a link arrangement structure substantially similar to that of a bush chain is proposed. There is a problem that the load is not evenly transmitted and the pin wear characteristics are also weak.

The present invention is to solve the conventional problems as described above, by adding the configuration of the sole plate to the chain portion, not only can effectively reduce the noise, but also configured to enable both sides drive to improve the freedom of design It is an object of the present invention to provide a silent chain capable of double-sided driving, which can be easily applied to a timing chain system.

In order to achieve the above object, the present invention comprises a plurality of inner plate teeth formed; A guide plate for fixing the inner plate from the outside; A tooth plate is formed and is coupled to the inner plate; A silent chain including pins for coupling the plates to each other, wherein a plurality of teeth are wound around a sprocket formed with a plurality of teeth to transmit or receive power, thereby effectively reducing noise and being designed to be double-sided. It is possible to improve the freedom of the, characterized in that can be easily applied to the timing chain system.

Furthermore, it is preferable that the single plate has a disc shape, and is formed by penetrating a hole through which the pin can be coupled.

In addition, the single plate is preferably capable of driving both sides, characterized in that located in the center of the plurality of inner plate.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of a silent chain capable of driving both sides according to the present invention.

Figure 4 is a perspective view of the silent chain according to the present invention, Figure 5 is an exploded perspective view of the chain portion in the silent chain according to the present invention. 4 and 5, the structure of the silent chain capable of driving both sides according to the present invention is divided into a chain portion 10 and a sprocket 20. The chain portion 10 consists of a guide plate 12, an inner plate 12, an inner plate 16, and a pin 18.

Each inner plate 12 is formed with two teeth 12a, which teeth 12a are engaged with the teeth 20a formed on the sprocket 20 so as to be in sliding contact with each other so that power is transmitted. And the plurality of inner plate 12 is coupled to each other by the pin 18. A guide plate 12 is provided on the outermost side of the inner plate 12 to serve to fix the plurality of inner plates 12 to the outside.

In addition, a single plate 16 having teeth 16a formed therebetween is inserted between the plurality of inner plates 12, and the single plate 16 is also connected to the inner plate 14 by the pins 18. Are fixed together. The shape of the single plate 12 is substantially disk-shaped, and is a structure formed by penetrating a hole for inserting the pin 18 in the center portion.

As shown in the right side of FIG. 4, two single plates 16 are fixedly installed by the pins 18 between the inner plates 14, and naturally penetrate between the two single plates 16. Holes 19 are formed. 4, the teeth 14a of the inner plate 14 and the teeth 16a of the single plate 16 have the same shape, so that each of the teeth 14a and 16a is different from each other. Combined to form a structure that can be in contact with the sprocket 20 like one tooth.

Figure 6 is a view showing a two-sided driving of the silent chain and the sprocket in accordance with the present invention. Referring to FIG. 6, the operation process of the silent chain capable of driving both sides according to the present invention will be described. In the single plate 16 formed between the inner plates 14, a through hole formed between each single plate 16 is described. The teeth 20a of the sprocket 20 are inserted into 19 to be in contact with each other. Therefore, the through hole 19 and the sprocket 20 can transmit power while in sliding contact with each other. The process of transmitting power by contacting the portion in which the teeth 14a and 16b are formed in the chain portion 10 and the teeth 20a of the sprocket 20 is the same as in the prior art, and thus the detailed description thereof will be omitted.

As described above, as described above, the silent chain capable of driving both sides of the present invention can not only effectively reduce noise, but also be configured to enable both sides of driving to improve the freedom of design, and thus can be easily applied to a timing chain system. It can be effective.

The present invention is not limited to the described embodiments, and various modifications and changes can be made to those skilled in the art without departing from the spirit and scope of the present invention. Such modifications or modifications may be made to the present invention. It belongs to the claims of the.

Claims (3)

A plurality of inner plates having teeth formed thereon; A guide plate for fixing the inner plate from the outside; A tooth plate is formed and is coupled to the inner plate; A silent chain comprising pins coupling the plates to each other, Silent chain capable of driving both sides characterized in that the power is transmitted or received by being wound around the sprocket formed with a plurality of teeth. The method of claim 1, The single plate has a disc shape, the silent chain capable of driving both sides, characterized in that formed through the hole through which the pin can be coupled. The method according to claim 1 or 2, The single plate is a silent chain capable of driving both sides, characterized in that located in the center of the plurality of inner plate.

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