KR20100054533A - Damping device in clutch - Google Patents

Abstract

PURPOSE: A damping device for a clutch is provided to prevent vibration or noise of a driving system by securing the maximum damping distance of a clutch. CONSTITUTION: A damping device for a clutch comprises plates(10,11), a hub plate(22), and a damping portion. The plate is installed at the center of a clutch disk(12). The hub plate is coupled with an input shaft(20) of a transmission. The damping portion is connected between the hub plate and the plate. The damping portion comprises a directional rail(30), a guide rail(32), a pivot(34), and an elastic spring. The directional rail is formed on the front side of the plate to gradually reduce the distance to the center. The guide rail is radially formed at the center of the hub plate.

Description

Clutch damping device {DAMPING DEVICE IN CLUTCH}

The present invention relates to a clutch that regulates power transmission of a flywheel in a transmission. More particularly, the present invention relates to a damping device of a clutch.

In general, a vehicle is equipped with a clutch that interrupts the power of the engine and transmits it to the driving wheels.

The clutch is a club transmission device that gradually transmits power to facilitate starting of the vehicle, and temporarily regulates power to a manual transmission as necessary to enable shift operation under no load.

The characteristics of the clutch include power transmission and interruption, smooth oscillation, heat resistance and durability. However, the most important role of the clutch is to block the torsional vibration of the engine, which is transmitted to the power transmission system when driving the vehicle, in terms of noise vibration harness. The clutch system has the function of a torsion characteristic that can primarily attenuate the torsional vibration of such an engine. Various types of clutches have been developed to solve problems such as gear rattles, booming, mete shocks, judders, and shuffles.

The ideal structure is to maximize the torsion angle as much as possible and maintain the existing torque. However, conventional clutches have a small twist angle in construction. To compensate for this, a structure for changing the rigidity or stage of the clutch spring has been developed. However, this also causes a problem such as an abnormal vibration caused by a backlash phenomenon occurs when the stiffness changes.

Accordingly, by providing a damping distance of the clutch as long as possible, the present invention provides a damping device for a clutch that can solve problems such as vibration and noise caused by the drive system.

To this end, the apparatus may include a plate installed in the center of the clutch disk, a hub plate coupled to the transmission input shaft, and a damping unit connected between the hub plate and the plate.

The damping portion is a guide rail formed to gradually reduce the distance to the center on the front surface of the plate, a guide rail formed in the radial direction from the center of the hub plate, and is installed to be movable along the guide rail to the guide rail Pivot coupled, may be installed in the guide rail may include an elastic spring for applying an elastic force to the pivot.

Accordingly, the clutch disc may have a large moving angle to ensure maximum movement distance of the clutch disc when damping.

Here, the plate may have a pair of two, and the hub plate may be installed between the plates, and the pivot may protrude to both sides of the guide rails to be coupled to the guide rails of the plates.

The guide rail may have a curved shape in which the radius of curvature gradually decreases.

In addition, the guide rail may be formed in a red ship form.

In addition, the plurality of guide rails may be formed at a predetermined angle from the center of the plate.

In addition, the guide rail installed on the hub plate may have a structure arranged at an angle corresponding to the arrangement angle of the guide rail.

As such, the device can reduce the vibration and the noise by ensuring a long damping distance by maximizing the torsion angle of the clutch.

In addition, driving system problems such as rattles, shocks, judders, and the like can be solved.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.

The drawings are schematic and illustrate that they are not drawn to scale. The relative dimensions and ratios of the parts in the figures have been exaggerated or reduced in size for clarity and convenience in the figures and any dimensions are merely exemplary and not limiting. And the same structure, element or part that appears in more than one figure the same reference numerals are used in different embodiments to indicate corresponding or similar features.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms “a,” “an,” and “the” include plural forms as well, unless the phrases clearly indicate the opposite. As used herein, the term "comprising" embodies a particular characteristic, region, integer, step, operation, element, and / or component, and other specific characteristics, region, integer, step, operation, element, component, and / or group. It does not exclude the presence or addition of.

Unless defined otherwise, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. Commonly defined terms used are additionally interpreted to have a meaning consistent with the related technical literature and the presently disclosed contents, and are not interpreted in an ideal or very formal sense unless defined.

Embodiments of the invention described with reference to a perspective view specifically illustrate an ideal embodiment of the invention. As a result, various variations of the illustration, for example variations in the manufacturing method and / or specification, are expected. Thus, the embodiment is not limited to the specific form of the illustrated region, but includes, for example, modification of the form by manufacture. For example, the regions shown or described as being flat may have characteristics that are generally coarse / rough and nonlinear. Also, the portion shown as having a sharp angle may be rounded. Thus, the regions shown in the figures are merely approximate, and their shapes are not intended to depict the exact shape of the regions, nor are they intended to limit the scope of the present invention.

1 shows an embodiment of the present damping device.

According to the above-described drawings, the apparatus includes plates 10 and 11 installed at the center of the clutch disc 12, a hub plate 22 coupled to the transmission input shaft 20, the hub plate 22 and the plate ( 10 and 11 includes a damping unit connected to and installed.

The plates 10 and 11 are formed in a circular plate structure, and two are connected in pairs. The hub plate 22 is installed in the inner space formed by the two plates 10 and 11. One of the plates 10 and 11 is provided with a clutch disk 12 to be in contact with a flywheel (not shown) along an outer circumferential surface thereof. The plates 10 and 11 are connected to the hub plate 22 via damping units. The hub plate 22 is provided with an input shaft 20 of a transmission at the center, and the input shaft 20 extends outward through a central hole 14 formed in the plate 11.

Here, the damping part absorbs vibrations due to torque changes generated when the clutch disc 12 contacts and spaced apart from the flywheel between the plates 10 and 11 and the hub plate 20.

To this end, the damping unit guide rails 30 are formed to gradually reduce the distance to the center on the front surface of the plate (10,11), and guide rails (32) formed radially from the center of the hub plate (22) And an elastic spring installed to be movable along the guide rail 32 and coupled to the guide rail 30 and installed in the guide rail 32 to apply an elastic force to the pivot 34. (36).

The length of the guide rail 30 corresponds to the substantial damping distance of the clutch. The angle formed by the both ends of the guide rail 30 at the center of the plate (10, 11) is to form a pivotable angle of the clutch.

In the present embodiment, three guide rails 30 are formed at a predetermined angle at the center of the plates 10 and 11. In addition, the guide rail 30 is formed in a curved shape gradually reducing the radius of curvature. The radius of curvature of the guide rail 30 is applicable to a structure that is continuously reduced, it is not particularly limited in the rate of change. As shown in FIG. 3, the three guide rails 30 are curved in an arc shape and overlap with each other, but have a structure in which the radius of curvature gradually decreases. That is, one side of the guide rail 30 is continuously reduced in radius of curvature, the end is formed toward the center than the next guide rail (30). The guide rail 30 may be extended longer beyond the next guide rail (30). Here, the guide rails 30 are formed in the same shape on each of the two plates 10 and 11 forming a pair.

The guide rail 30 may be formed in a straight form in addition to the curved form. This structure also has a structure in which the distance between the guide rail 30 and the center of the plates 10 and 11 gradually decreases along the guide rail 30. Accordingly, when the plates 10 and 11 rotate, the pivot 34 moves along the guide rail 30 to pressurize the elastic spring 36.

On the other hand, the hub plate 22 is formed along the outer circumferential surface of the guide rail 32 at a predetermined angle corresponding to the number of the guide rail 30. In this embodiment, three guide rails 32 are installed on the hub plate 22 at intervals of 120 degrees.

As shown in Figure 2, the guide rail 32 is installed in the radial direction on the hub plate 22, the moving member 38 is installed in the movable direction along the longitudinal direction. In addition, the front and rear of the guide rail 32 is formed with a long hole 40, the pivot 34 formed in the movable member 38 through the long hole 40 is projected to the outside. In the long hole 40, an elastic spring 36 is elastically installed between the moving member 38. When the moving member 38 having the pivot 34 formed thereon is pressed, the elastic spring 36 is pressed to generate an elastic force.

As shown in FIG. 3, the guide rail 32 is inserted between the two plates 10 and 11. And the pivot 34 protruding to the front and rear surfaces of the guide rail 32 is fitted into the guide rails 30 of each plate (10, 11) located on the front and rear surfaces of the guide rail (32).

Hereinafter, the operation of the apparatus will be described.

When the clutch disc 12 rotates in contact with the flywheel, the rotational torque transmitted from the flywheel is transmitted to the plates 10 and 11 through the clutch disc 12. Accordingly, the plates 10 and 11 rotate about the guide rail 32 of the hub plate 22 which is relatively stopped. Therefore, the plates 10 and 11 and the hub plate 22 are in a state of rotating in a relative direction.

As described above, as the plates 10 and 11 rotate in the clockwise direction, the guide rails 32 are stopped as they rotate in the counterclockwise direction with respect to the plates 10 and 11.

Therefore, the pivot 34 installed on the guide rail 32 and inserted into the guide rails 30 of the plates 10 and 11 is moved along the guide rail 30.

As mentioned above, the guide rail 30 has a radius of curvature gradually formed to be close to the center of the plates 10 and 11. When the pivot 34 moves along the guide rail 30 as described above, the movable member 38 on which the pivot 34 is installed moves toward the hub plate 22 with respect to the guide rail 32.

Therefore, the moving member 38 provided with the pivot 34 moves along the guide rail 32 to gradually press the elastic spring 36 installed in the guide rail 32. That is, when the pivot 34 moves along the guide rail 30 by rotating the plates 10 and 11, the pivot 34 moves toward the center of the hub plate 22 in the guide rail 32. The stiffness of the spring 36 is increased.

As the flywheel and clutch disc 12 and the plates 10 and 11 move in the same manner and the elastic restoring force of the elastic spring 36 increases, the guide rail 32 moves along the plates 10 and 11 so that the hub plate 22 may move. The input shaft 20 installed in the is rotated.

Here, unlike the conventional device, the damping angle of the clutch is not limited to the compression range of the elastic spring 36. Since the damping angle of the clutch corresponds to the forming angle of the guide rail 30, the damping distance can be maintained longer.

5 and 6 is a graph comparing the movement angle and the damping distance of the clutch of the present device compared with the prior art. As shown, the clutch according to the prior art has a movement angle of up to 23 to 25 degrees due to damping. In contrast, the clutch according to the present apparatus has a longer moving angle because it corresponds to an angle at which the pivot 34 moves along the guide rail 30.

In addition, in the case of the conventional clutch having the first and second stages by the pre-damper spring and the main damper spring, the damping distance is as much as the area B shown in FIG. However, the clutch of the present device has a longer damping distance as compared to the prior art, having a distance obtained by adding the C region to the B region.

In addition, since the conventional clutch is divided into two stages, shock and judder are generated when the two stages are crossed as shown in FIG. 6 due to the difference in rigidity of the two stages. On the contrary, in the clutch, the elastic spring 36 is continuously changed according to the change in the radius of curvature of the guide rail 30. Accordingly, the stiffness of the elastic spring 36 does not change rapidly, but the stiffness change is made in the form of a smooth curve like the dotted line of FIG. 6. The change in the stiffness of the elastic spring 36 can realize a more suitable drive for the environment by changing the radius of curvature of the guide rail 30.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.

1 is a schematic perspective view showing the configuration of a clutch damping device according to the present embodiment.

2 is a perspective view showing a part of the configuration of the clutch damping device according to the present embodiment.

3 is a cross-sectional view of the clutch damping device according to the present embodiment.

4 is a schematic view for explaining an operating state of the clutch damping device according to the present embodiment.

5 is a graph showing the clutch movement angle of the damping apparatus according to the present embodiment.

6 is a graph showing the clutch damping distance of the damping apparatus according to the present embodiment.

Explanation of symbols on the main parts of the drawings

10,11 plate 12: clutch disc

20: input shaft 22: hub plate

30: guide rail 32: guide rail

34: pivot 36: elastic spring

38: moving member 40: long hole

Claims (6)

A plate installed in the center of the clutch disc, a hub plate coupled to the transmission input shaft, and a damping unit connected and installed between the hub plate and the plate, The damping unit is a guide rail formed to gradually reduce the distance to the center on the front surface of the plate, a guide rail formed in the radial direction from the center of the hub plate, and is installed to be movable along the guide rail to the guide rail A damping device of the clutch comprising a pivot coupled, the elastic spring is installed in the guide rail to apply an elastic force to the pivot. The method of claim 1, The guide rail is a damping device of the clutch of a curved shape gradually reducing the radius of curvature. The method of claim 2, The guide rail damping device of a plurality of clutches are arranged at an angle from the center of the plate. 4. The method according to any one of claims 1 to 3, The two plates are arranged in pairs to face each other, the hub plate is installed between the plates, the pivot is projected on both sides of the guide rails damping device of the clutch structure of the structure coupled to the guide rail of each plate. The method of claim 4, wherein The guide rail is radially installed on the hub plate, and a moving member having a pivot protruding therein is installed to be movable along the length direction, and damping of a clutch in which an elastic spring is elastically installed between the moving member and the inner surface of the guide rail. Device. The method of claim 5, The guide rail damping device of the clutch is arranged at an angle corresponding to the arrangement angle of the guide rail.

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