KR200429589Y1 - Metal Damper for Clutch Master Cylinder - Google Patents

Abstract

The present invention is provided on the hydraulic discharge side to store a portion of the clutch oil when the hydraulic pressure inside the clutch master cylinder to absorb / attenuate noise and high frequency vibration and at the same time to absorb / attenuate low frequency vibration transmitted to the clutch pedal side, When the hydraulic pressure inside the clutch master cylinder increases due to the operation of the clutch pedal or the vibration of the engine and the transmission, a housing is provided to store a portion of the clutch oil, and the noise generated by the hydraulic pressure increase inside the clutch master cylinder. Provided is a metal damper for a clutch master cylinder comprising a diaphragm that expands or contracts the volume of the space to damp vibration and a cover that limits the expansion of the diaphragm.

Clutch, Damper, Diaphragm, Noise Discharge Hole

Description

Metal Damper for Clutch Master Cylinder

1 is a perspective view showing a general clutch operation mechanism.

2 is a cross-sectional view showing a hydraulic damper included in a general clutch operating mechanism.

3 is a cross-sectional view showing a metal damper according to the present invention.

4 is a cross-sectional view showing the clutch master cylinder with a metal damper according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: Metal damper for clutch master cylinder

20: housing 22: space

28: Euro 30: diaphragm

40: cover 42: noise exhaust hole

50: ring M: clutch master cylinder

R: Clutch actuation rod P: Piston

The present invention relates to a metal damper for a clutch master cylinder, and more particularly, a low frequency transmitted to a clutch pedal side due to vibration of an engine and a transmission while absorbing / attenuating noise and high frequency vibration generated when operating a clutch pedal of an automobile. Sex vibrations also relate to metal dampers for clutch master cylinders for absorbing / damping.

In general, the clutch of the vehicle is installed between the flywheel and the input shaft of the transmission to selectively control the power of the engine transmitted to the transmission. When the engine is started or when the gear of the transmission is shifted, the clutch is disconnected from the engine. When you do, work to slowly connect the power of the engine.

The conventional hydraulic clutch installed in such a clutch operates as shown in FIG. 1, a clutch pedal 2, a master cylinder 3 for generating hydraulic pressure in response to the operation of the clutch pedal 2, and the master cylinder. Clutch release cylinder 4 to which hydraulic pressure of (3) is transmitted, hydraulically actuated release fork 5 of clutch release cylinder 4, and hydraulic line between master cylinder 3 and clutch release cylinder 4 And a hydraulic damper 7 provided at (6).

The conventional hydraulic damper 7 configured as described above is installed in the hydraulic line 6 between the master cylinder 3 and the release cylinder 4, as shown in FIG. 2, which occurs when the clutch pedal 2 is operated. It has been used to reduce noise and vibration.

However, as the engine displacement of the vehicle increases, the hydraulic damper 7 alone cannot prevent low frequency vibration transmitted to the clutch pedal side by hydraulic pulsation of the clutch oil due to vibration of the engine and the transmission.

An object of the present invention is to provide a metal damper for a clutch master cylinder for absorbing / attenuating noise and high frequency vibration generated when a clutch pedal of a vehicle is operated.

Another object of the present invention is to provide a metal damper for a clutch master cylinder for absorbing / attenuating low frequency vibration transmitted to the clutch pedal side by hydraulic pulsation of the clutch oil due to vibration of the engine and the transmission.

Metal damper for the clutch master cylinder according to the present invention for solving the above problems, when the hydraulic pressure inside the clutch master cylinder due to the operation of the clutch pedal or vibration of the engine and the transmission can store a portion of the clutch oil It includes a housing provided with a space, a diaphragm for expanding or contracting the volume of the space and a cover for limiting the expansion of the diaphragm to attenuate the noise and vibration generated by the hydraulic rise in the clutch master cylinder. In this case, a noise discharge hole of a predetermined size is formed in the cover.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary depending on the intention or convention of a user or an operator. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

3 is a cross-sectional view showing a metal damper according to the present invention, Figure 4 is a cross-sectional view showing a clutch master cylinder with a metal damper according to the present invention.

The metal damper 10 for the clutch master cylinder according to the present invention has a clutch master cylinder (M of FIG. 4) provided at the hydraulic discharge side to store a part of the clutch oil when the hydraulic pressure rises inside the clutch master cylinder M to prevent noise and vibration. It is for absorbing / damping low frequency vibration transmitted to the clutch pedal side at the same time as absorbing / damping.

Looking at the structure, as shown in Figure 3, the housing 20 is in communication with the clutch master cylinder (M) and a predetermined space 22 is provided therein, and the space 22 formed inside the housing 20 It comprises a diaphragm 30 for sealing the cover, and a cover 40 for limiting the expansion of the diaphragm 30.

Looking at each of the components in more detail as follows.

The housing 20 is formed in three stages, the diameter of which becomes smaller toward the top, the outer peripheral surface of the upper threaded thread 24 for coupling with the clutch master cylinder (M) is formed, the outer peripheral surface of the suspension tools such as spanners Hexagonal nuts 26 are formed to rotatably couple the housing 20 by using a. In addition, a flow path 28 penetrating the upper and lower portions of the housing is formed, and the above-described space 22 is formed in the lower portion of the flow path 28, that is, the lower end of the housing 20. In this case, the flow passage 28 is a passage in which a part of the clutch oil moves when the hydraulic pressure inside the clutch master cylinder M is increased by communicating with the clutch master cylinder M, and the space 22 is the flow passage ( This is the space where the clutch oil introduced through 28) is stored.

Herein, the hydraulic pressure inside the clutch master cylinder M is increased when the clutch pedal is operated and when hydraulic pulsation is applied to the clutch oil due to the vibration of the engine and the transmission. Among these, when the clutch pedal is operated, the hydraulic pressure is increased and noise and high frequency vibration are generated. When hydraulic pulsation is applied to the clutch oil, low frequency vibration is generated.

In order to absorb / attenuate such noise and vibration, as shown in FIG. 3, the space 22 is provided with a diaphragm 30 and a cover 40 that seal the open lower portion.

The diaphragm 30 is a thin film made of an elastic body and expands downward when the clutch oil flows into the space 22 to maximize the storage capacity of the space 22. In addition, the cover 40 prevents the diaphragm 30 from being inflated beyond a threshold in the form of a plate with its central portion projecting downward. At this time, the noise discharge hole 42 of a predetermined size is provided in the central portion of the cover 40 to discharge the noise transmitted with the clutch oil to the outside.

Looking at the coupling structure of the diaphragm 30 and the cover 40 having the above function, the two opening stages (22a, 22b) are formed in the open lower portion of the space 22, the inside of the opening. The upper end 22a of the two locking step 22a and 22b is a portion to which the ring 50 for sealing the space together with the diaphragm 30 is fixed, and the lower end 22b is the diaphragm. 30 and the cover 40 are fixed parts. In this case, in order to increase the sealing efficiency of the space 22, the ring 50 is formed as an angle ring having a rectangular longitudinal section, and the cover 40 is press-molded in the lower portion of the space 22.

With reference to Figure 4 looks at the process of absorbing / attenuating noise and vibration by using the metal damper 10 for the clutch master cylinder of the present invention having the configuration and structure as described above.

The hydraulic pressure inside the clutch master cylinder M is raised when the clutch pedal is operated as described above, and when hydraulic pulsation is applied to the clutch oil due to the vibration of the engine and the transmission. In the former case, when the clutch pedal is operated, the clutch operating rod R interlocked with the piston moves the piston P inside the clutch master cylinder M to increase the hydraulic pressure. In addition, in the latter case, vibrations of the engine and the transmission transmitted through the hydraulic line (6 in FIG. 1) generate hydraulic pulsation in the clutch oil, thereby increasing the hydraulic pressure.

When the hydraulic pressure inside the clutch master cylinder M is raised for the above reason, a part of the clutch oil filled in the clutch master cylinder M is passed through the flow path 28 of the metal damper 10 for the clutch master cylinder of the present invention. It flows into the space 22 inside the housing 20. At this time, the diaphragm 30 provided in the lower portion of the space 22 expands the space 22 and absorbs the high frequency vibration and the low frequency vibration transmitted with the clutch oil, thereby absorbing the vibration transmitted to the clutch pedal side. Will be attenuated. In addition, the noise transmitted along with the vibration through the clutch oil is discharged to the outside through the noise discharge hole 42 of the cover 40 via the diaphragm 30 is attenuated.

As described above, the configuration and operation of the metal damper for the clutch master cylinder according to the preferred embodiment of the present invention are shown in accordance with the above description and drawings, but this is merely described, for example, and does not depart from the spirit of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope.

As described above, the metal damper for the clutch master cylinder according to the present invention can reduce noise and high frequency vibration generated when the clutch pedal is operated by a cover having a diaphragm and a noise discharge hole provided in a housing interior space.

In addition, the diaphragm made of an elastic body can absorb low frequency vibration transmitted to the clutch pedal side by hydraulic pulsation of the clutch oil due to vibration of the engine and the transmission in addition to the high frequency vibration.

Claims (2)

A housing having a space for storing a part of the clutch oil when the hydraulic pressure inside the clutch master cylinder rises due to the operation of the clutch pedal or vibration of the engine and the transmission; A diaphragm that expands or contracts the volume of the space to attenuate the noise and vibration generated by the hydraulic lift inside the clutch master cylinder; A cover to limit expansion of the diaphragm; Metal damper for clutch master cylinder is configured to include. The method of claim 1, The cover is formed in the form of a plate protruding outward from the center, the metal damper for clutch master cylinder, characterized in that the noise discharge hole of a predetermined size is formed through the cover.

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