KR102532361B1 - Pulsation damping structure of clutch for vehicle - Google Patents

Abstract

A pulsation reducing structure of a vehicle clutch is disclosed. According to one aspect of the present invention, a damper is provided in a hydraulic tube connected between a master cylinder and a release cylinder to which a clutch pedal is coupled, and an outer circumferential surface of the damper has the same pitch along the longitudinal direction to allow the flow of oil A pulsation reducing structure of a clutch for a vehicle in which a plurality of passages having a spiral shape may be provided.

Description

Pulsation damping structure of clutch for vehicle {Pulsation damping structure of clutch for vehicle}

The present invention relates to a structure for reducing pulsation of a clutch for a vehicle, and more particularly, to a structure for reducing pulsation of a clutch for a vehicle capable of improving the damping effect of vibration and pulsation transmitted from a clutch to a clutch pedal.

In general, a manual transmission for a vehicle is a device that shifts gears by lifting a clutch disk by hydraulic pressure generated as a driver operates a clutch pedal.

Vibrations are generated during operation of an engine, a transmission, and a clutch during driving of a vehicle, and such vibrations are transmitted to a clutch pedal through a hydraulic line between a clutch pedal and a clutch disk, causing discomfort to a driver.

To solve this problem, a regulator that reduces vibration transmitted to the clutch pedal is installed on the hydraulic line between the clutch disk and the clutch pedal, and an AVU (Anti Vibration Unit) is installed close to the transmission side to prevent vibration. transfer is minimized.

However, since the regulator and the vibration reducing device have different structures and are installed, there is a problem in that the usability of the installation space is reduced and the cost and weight increase as well.

The pulsation reducing structure of the clutch for a vehicle according to an embodiment of the present invention can perform the roles of an existing regulator and a vibration reducing device together, and is configured as a single product to reduce cost and weight.

According to one aspect of the present invention, a damper is provided in a hydraulic tube connected between a master cylinder and a release cylinder to which a clutch pedal is coupled, and an outer circumferential surface of the damper has the same pitch along the longitudinal direction to allow the flow of oil A pulsation reducing structure of a clutch for a vehicle in which a plurality of passages having a spiral shape may be provided.

In addition, the hydraulic tube may have a first bending part and a second bending part formed by bending a predetermined length, and the damper may be provided between the first bending part and the second bending part.

In addition, the damper has a predetermined length, the outer diameter of the body portion formed to have a diameter corresponding to the inner diameter of the hydraulic tube; and a stopper provided to protrude from the front and rear ends of the body, wherein the plurality of flow passages are formed on the outer circumferential surface of the body, and the passage formation points formed at the front and rear ends of the body have mutually equal angles. can

In addition, the front end and the rear end of the body portion may be provided to have a rounded shape.

In addition, the stopper is made to have a spherical shape, and may be formed to have a smaller diameter than the diameter of the body portion.

In addition, the damper may be made of a rubber material.

A pulsation reducing structure of a clutch for a vehicle according to an embodiment of the present invention provides a damper having a spiral flow path in a hydraulic tube forming a hydraulic line between a clutch pedal and a clutch disk, thereby allowing fluid to move and absorbing vibration, By damping, there is an effect of performing the function of the existing regulator and vibration reduction device through one component. Accordingly, as it is composed of one part, it is possible to reduce the cost and reduce the size, so that the layout is advantageous.

In addition, by being installed in a commonly used hydraulic tube, it is advantageous for common use, and there is an effect that it can be used universally by being grafted to a clutch system as well as a brake system or a tube generating various vibrations and noises.

The present invention will be specifically described by the drawings below, but since these drawings show preferred embodiments of the present invention, the technical spirit of the present invention should not be construed as being limited to the drawings.
1 is a diagram showing a pulsation reducing structure of a clutch for a vehicle according to an embodiment of the present invention.
2 is a perspective view showing a damper of a pulsation reducing structure of a clutch for a vehicle according to an embodiment of the present invention.
Figure 3 is a front view of Figure 2;
4 is a view showing a state in which the movement of a damper of a pulsation reducing structure of a vehicle clutch according to an embodiment of the present invention is restricted by a stopper.
5 is a view showing another embodiment of a damper provided in a pulsation reducing structure of a clutch for a vehicle according to an embodiment of the present invention.

The embodiments described in this specification and the configurations shown in the drawings are only one preferred example of the disclosed invention, and there may be various modifications that can replace the embodiments and drawings in this specification at the time of filing of the present application.

In addition, the same reference numerals or numerals presented in each drawing in this specification indicate parts or components that perform substantially the same function.

In addition, the terms used in this specification are used to describe the embodiments, and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "having" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features The existence or addition of numbers, steps, operations, components, parts, or combinations thereof is not excluded in advance.

In addition, terms including ordinal numbers such as “first” and “second” used herein may be used to describe various components, but the components are not limited by the terms, and the terms It is used only for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the scope of the present invention. The term “and/or” includes any combination of a plurality of related listed items or any of a plurality of related listed items.

Meanwhile, the terms "front", "rear", "upper" and "lower" used in the following description are defined based on the drawings, and the shape and position of each component are not limited by these terms.

In the following description, a vehicle refers to various devices that move objects to be transported, such as humans, objects, or animals, from a starting point to a destination. Vehicles may include vehicles that travel on roads or tracks, ships that move over seas or rivers, and airplanes that fly in the sky using action of air.

In addition, a vehicle running on a road or track can move in a predetermined direction according to the rotation of at least one wheel, and for example, a three-wheeled or four-wheeled vehicle, a construction machine, a two-wheeled vehicle, a motor vehicle, a bicycle, and a train traveling on a track can include

Hereinafter, an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a pulsation reducing structure of a vehicle clutch according to an embodiment of the present invention, FIG. 2 is a perspective view showing a damper of a pulsation reducing structure of a vehicle clutch according to an embodiment of the present invention, and FIG. 2 is a front view, and FIG. 4 is a view showing a state in which the movement of a damper of a pulsation reducing structure of a vehicle clutch according to an embodiment of the present invention is restricted by a stopper.

1 to 4, a structure for reducing pulsation of a clutch for a vehicle according to an aspect of the present invention includes a hydraulic tube 10 connected between a master cylinder (not shown) to which a clutch pedal is coupled and a release cylinder (not shown) A damper 100 provided therein is provided. Here, the hydraulic tube 10 has a first bending portion 11 and a second bending portion 12 formed by bending with a predetermined length. That is, the hydraulic tube 10 has one end connected to the master cylinder and the other end connected to the release cylinder, and is connected so that oil flows from the master cylinder to the release cylinder according to the effort of the clutch pedal.

The damper 100 is provided in the hydraulic tube 10 to allow the flow of oil and serves to damp vibration. The damper 100 may be provided between the first bending part 11 and the second bending part 12 of the hydraulic tube 10 . At this time, the distance between one end of the damper 100 and the first bending part 11 and the distance between the other end of the damper 100 and the second bending part 12 are installed to have half the distance of the clutch release bearing stroke it is desirable

More specifically, the damper 100 includes a body portion 110 having a predetermined length, a stopper 130 provided to protrude from the front and rear ends of the body portion 110, and a plurality of bodies formed on the outer diameter of the body portion 110. It is provided with a flow path 120 of.

The body portion 110 has a cylindrical shape with a predetermined length, and its front and rear ends are rounded. As shown, the front and rear ends of the body 110 have a convex hemispherical shape. This is to prevent vortex flow when oil flows along the flow path 120 to be described later. The body portion 110 may have an outer diameter corresponding to the inner diameter of the hydraulic tube 10 or have a smaller diameter than the inner diameter of the hydraulic tube 10 and may be fitted into the hydraulic tube 10 .

A plurality of flow passages 120 are formed on the outer diameter of the body 110 to allow oil to flow along the longitudinal direction. The plurality of passages 120 may be formed in a spiral shape. More specifically, the plurality of passages 120 are formed in a spiral shape to have the same pitch along the longitudinal direction of the body portion 110 . As shown, the plurality of flow passages 120 are provided in three, and each of the first flow passage, the second flow passage, and the third flow passage have the same pitch at the body portion 110 by making the flow path formation point P different. can be formed At this time, the flow path formation points P are formed at the front and rear ends of the body 110, and each flow path formation point P may be formed to have an equal angle with each other. That is, the three passages 120 are spaced apart from each other to have an equal angle of 120° and are formed from passage formation points P at the front and rear ends of the body 110 .

As such, as the damper 100 is provided in the hydraulic tube 10, oil flows into the hydraulic tube 10 due to pressure generated from the master cylinder when the clutch pedal is pressed. Accordingly, the oil flows along the plurality of passages 120 formed on the outer circumferential surface of the damper 100 and is supplied to the release cylinder. In addition, as the damper 100 absorbs the vibration pulsation transmitted from the release cylinder, the vibration pulsation transmitted to the clutch pedal is reduced. Accordingly, the damper 100 is preferably made of a rubber material in order to effectively reduce vibration pulsation.

On the other hand, when a high pressure is generated in the hydraulic tube 10 and the damper 100 is moved, for example, when the damper 100 moves toward the second bending part 12, the damper 100 made of rubber moves to the second bending part In order to prevent the flow path in the hydraulic tube 10 from being blocked by riding into the side (12) and being deformed, stoppers 130 are provided at the front and rear ends of the body portion 110.

As described above, the stopper 130 serves to limit the movement of the damper 100 to prevent the body portion 110 from riding into the bending portions 11 and 12 and blocking the passage. That is, as shown in FIG. 4, when the damper 100 moves toward the second bending portion 12, the stopper 130 contacts the inside of the hydraulic tube 10 on which the second bending portion 12 is formed. The movement of the damper 100 is limited. The stopper 130 protrudes from the front and rear ends of the body 110 and has a spherical shape having a diameter smaller than that of the body 110 . This is to allow oil to flow smoothly through the plurality of flow passages 120 formed in the body portion 110 .

On the other hand, according to one aspect of the present invention, although the plurality of flow passages 120 formed on the outer circumferential surface of the damper 100 have been shown and described as being provided in three, it is not limited thereto, and the plurality of flow passages 120 are formed to have an equal angle If so, the number can be selectively increased or decreased. For example, as shown in (a) of FIG. 5, four channels 120' having the same pitch and an equal angle of 90° may be formed on the outer circumferential surface of the damper 100'. In addition, as shown in (b) of FIG. 5, two channels 120" having the same pitch and an equal angle of 180° may be formed on the outer circumferential surface of the damper 100". As the number of passages 120, 120', and 120" increases or decreases, the number of rotations of the spiral passages formed in the dampers 100, 100', and 100" and/or the area of the passages may be selectively increased or decreased. As an example, if four passages 120' are formed and the number of revolutions is the same as that of the damper 100 having three passages 120, the number of revolutions should be reduced because the thickness of the passages 120' is reduced. In addition, when two passages 120" are formed, the number of revolutions of the fluid can be increased, but the overall passage area is reduced, resulting in increased resistance.

By installing the dampers (100, 100', 100") as described above on the hydraulic tube (10) to allow fluid movement and at the same time to absorb and damp vibration, the function of the existing regulator and vibration reduction device through one component There is an effect of being able to perform the effect of being able to perform.Therefore, as it is composed of one part, it is possible to reduce cost and reduce the size, so that the layout has an advantageous effect.

As described above, although the present invention has been described by the limited embodiments and drawings, the present invention is not limited thereto, and the technical spirit of the present invention and the following by those skilled in the art to which the present invention belongs Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

10: hydraulic tube
11: first bending part
12: second bending part
100, 100', 100" : Damper
110: body part
120, 120', 120" : Euro
130: stopper

Claims (7)

A damper provided to be movable in a hydraulic tube connected between a master cylinder to which a clutch pedal is coupled and a release cylinder,
A plurality of flow channels having the same pitch along the longitudinal direction are formed in a spiral shape on the outer circumferential surface of the damper to allow the flow of oil,
The damper is
a body portion having a predetermined length and having an outer diameter equal to or smaller than an inner diameter of the hydraulic tube; and
A stopper provided to protrude from the front and rear ends of the body;
The stopper
A structure for reducing pulsation of a clutch for a vehicle that prevents the damper from being deformed when the damper moves in the hydraulic tube to prevent clogging of the flow path in the hydraulic tube. According to claim 1,
The hydraulic tube has a first bending part and a second bending part formed by bending while having a predetermined length,
The damper is a pulsation reducing structure of a clutch for a vehicle provided between the first bending part and the second bending part. According to claim 1,
The plurality of passages are formed on the outer circumferential surface of the body, and the flow passage formation points formed at the front and rear ends of the body are formed to have mutually equal angles. According to claim 3,
The front and rear ends of the body portion are provided to have a rounded shape. According to claim 1,
The stopper is made to have a spherical shape and is formed to have a smaller diameter than the diameter of the body portion. According to claim 1,
The damper is a pulsation reducing structure of a vehicle clutch made of a rubber material.
A damper provided to be movable in a hydraulic tube connected between a master cylinder to which a clutch pedal is coupled and a release cylinder,
On the outer circumferential surface of the damper, a plurality of flow channels having the same pitch along the longitudinal direction are formed in a spiral shape to allow the flow of oil,
The damper is
a body portion having a predetermined length and having an outer diameter equal to or smaller than an inner diameter of the hydraulic tube; and
A stopper provided to protrude from the front and rear ends of the body;
The plurality of flow passages are formed on the outer circumferential surface of the body portion, and flow passage formation points formed at the front and rear ends of the body portion are formed to have mutually equal angles,
The front and rear ends of the body portion are provided to have a rounded shape.

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