KR101526789B1

KR101526789B1 - Clutch actuator

Info

Publication number: KR101526789B1
Application number: KR1020140022548A
Authority: KR
Inventors: 이희락
Original assignee: 주식회사평화발레오
Priority date: 2014-02-26
Filing date: 2014-02-26
Publication date: 2015-06-12

Abstract

[0001] The present invention relates to a clutch actuator for compensating for wear of a clutch disc, and more particularly, to a clutch actuator having a drive shaft, a drive unit for generating a rotational force, a slider coupled to the drive shaft linearly by a rotational force of the drive unit, A rod assembly having one end extended to the outside of the housing and connected to the clutch actuator fork so as to act on the clutch actuator fork while linearly moving, And a power transmission mechanism that transmits the power of the drive unit to the load assemble while moving along the inclined surface of the guide member.

Description

CLUTCH ACTUATOR [0002]

The present invention relates to a clutch actuator, and more particularly, to a clutch actuator capable of compensating for wear of a clutch disk.

Generally, the manual transmission is operated by the driver pressing the clutch pedal, so that the inflow generated from the clutch master cylinder transmits the force through the tappet of the clutch release cylinder, and the force transmitted through the tappet pushes the clutch release fork in the axial direction The force is transmitted to the clutch diaphragm spring by moving.

The clutch is disposed between the engine and the transmission. The clutch is connected between the engine-side flywheel and the transmission input shaft so as to transmit or block the rotational force of the engine to the transmission.

However, in the case of the clutch pedal and the hydraulic cylinder, it is troublesome for the driver to operate the clutch pedal directly, and the driving feeling and the driving stability are greatly influenced by the skill of the driver. Thus, recently, an automatic manual transmission and a double clutch transmission It is a trend that is being used.

At this time, the clutch interrupting action in the automatic type manual transmission and the double clutch transmission is performed by the clutch actuator, and an example of this clutch actuator is disclosed in Korean Patent Laid-Open No. 10-2012-0011527 (Patent Document 1).

Meanwhile, the clutch is used as a means for interrupting the power at the time of shifting in the course of transmitting the power of the engine to the wheels through the transmission. The clutch is disposed on one side of the flywheel provided on the crankshaft of the engine and on one side of the transmission input shaft And the power is transmitted by the frictional force.

The clutch disc of such a clutch is provided with a friction material for generating a frictional force, which causes severe wear due to repeated intermittent action of the clutch, and this disc wear has a problem that the operation of the clutch operated by the clutch actuator is incomplete .

In order to prevent the clutch from being incompletely operated, it is necessary to adjust the clearance of the clutch.

Korean Patent Publication No. 10-2012-0011527

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a clutch actuator capable of compensating wear of a clutch by adjusting the length of an operating rod exposed to the outside of the main housing for adjusting clutch clearance.

According to an aspect of the present invention, there is provided a driving apparatus including a driving unit including a driving shaft and generating a rotational force, a slider coupled to the driving shaft by a rotational force of the driving unit to linearly move the slider, A rod assembly having one end extending outwardly of the housing and connected to the clutch actuator fork and acting on the clutch actuator fork while linearly moving; At least one toothed portion is formed at the other end of the rod assembly, and at least one toothed portion is formed on the inner circumferential surface of the rod assembly in the circumferential direction Further comprising a ring member It is preferred.

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The rod assembly further includes a movable member that is reciprocated by the power transmission mechanism, a first rod movably coupled to the movable member, and a second rod having one end connected to the actuation fork and the other end connected to the first rod .

The power transmission mechanism includes a hinge housing having one end fixedly hinged to the rod assembly and formed with a receiving space, a shaft member provided at the other end of the hinge housing, an elastic member accommodated in the accommodation space and elastically supporting the rotation shaft, And a rotating member rotatably provided on the rotating shaft.

According to the present invention, when the wear of the clutch disc is generated, the length of the rod assembly is adjusted by the interaction of the teeth formed on the rod assembly with the teeth of the ring member provided on the housing, thereby compensating wear of the clutch disc .

Further, the manufacturing and maintenance cost can be reduced with a simple structure, and the vehicle can be manufactured compactly, thereby contributing to the weight saving of the vehicle.

1 is a cross-sectional view of a clutch actuator according to an embodiment of the present invention;
2 is a sectional view showing a state in which the clutch actuator of Fig. 1 is operated. Fig.
FIGS. 3 and 4 are cross-sectional views showing a state in which the wear compensation operation of the clutch disc is performed in the clutch actuator. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

Fig. 1 is a cross-sectional view showing a clutch actuator according to an embodiment of the present invention, Fig. 2 is a sectional view showing a state in which the clutch actuator of Fig. 1 is actuated, Figs. 3 and 4 show a clutch disk Sectional view showing a state in which the compensation operation is performed.

As shown in the figure, the clutch actuator according to an embodiment of the present invention includes a housing 100, a driving unit 110, a slider 120, a guide member 130, a rod assembly 150, a ring member 170, And a power transmission mechanism (140).

First, the housing 100 constitutes the outer shape of the clutch actuator, and an installation space is formed on the inner side, and a plurality of component parts are configured to be operatively combined with each other in the installation space.

The driving unit 110 generates a rotational force and is composed of a motor provided with a driving shaft 111. The motor is coupled through one side of the housing 100, and the drive shaft 111 is disposed in the installation space. The drive shaft 111 is provided with a slider 120 reciprocating within the housing 100 when the drive shaft 111 is rotated by the operation of the motor.

The slider 120 is rotatably coupled to the driving shaft 111 and reciprocates when it contacts the inner bottom surface of the housing 100 when the driving shaft 111 rotates by the operation of the motor. The initial state of the slider 120 is on the motor side, and is linearly moved toward the guide member 130, which will be described later, by the operation of the motor. That is, the slider 120 is screwed to the drive shaft 111, which is formed in a screw shape, and is moved toward the guide member 130 when the drive shaft 111 is rotated.

The slider 120 is formed with a pressurized slant surface 121 which is pressed and tilted by an arc locus when the slider 120 is moved toward the guide member 130 by the operation of the motor . The pressing inclined surface 121 is formed toward the guide member 130 so as to press the power transmission mechanism 140 when the slider 120 moves from the motor side to the guide member 130 to be described later.

The guide member 130 is provided in the housing 100 and is provided on the inner surface of the housing 100 facing the drive shaft 111 of the motor installed in the housing 100. The guide member 130 guides the movement of the power transmission mechanism 140 when the power transmission mechanism 140 is pressed by the slider 120 and is provided on a surface And a guide slant surface 131 to which the power transmission mechanism 140 is moved to contact.

The pressing sloping surface 121 of the slider 120 is convexly formed to press the shaft member 141 to be described later when the slider 120 moves linearly on the driving shaft 111, (131) is formed concavely to guide the movement of the rotary member (142) coupled to the shaft member (141).

The power transmission mechanism 140 is pressed by the slider 120 that moves when the driving shaft 111 is rotated by the driving of the driving unit 110 and moves along the guiding slant surface 131 of the guiding member 130, And includes a hinge housing 143, a shaft member 141, a rotating member 142, and an elastic member 144, which linearly move the rod assembly 150.

The hinge housing 143 is hinged to one end of the movable member 154 of the rod assembly 150, which will be described later. The hinge housing 143 is provided with a receiving space for receiving the elastic member 144 described later. A shaft member 141 to be described later is provided at the other end of the hinge housing 143. The shaft member 141 is elastically supported by an elastic member 144. [

The shaft member 141 is coupled to a fork action mechanism (to be described later) and is configured to be in contact with the pressurized slant surface 121 of the slider 120, and is moved along the pressurized slant surface 121 when the slider 120 is moved. That is, the shaft member 141 is positioned below the pressing slope 121 of the slider 120 before the operation of the driving unit 110, and after the operation of the driving unit 110, As shown in FIG.

The rotary member 142 is rotatably coupled to the shaft member 141 and is moved together with the shaft member 141 when the slider 120 presses the shaft member 141 by driving the driving unit 110, And is moved along the guide slope 131 of the member 130. The rotary member 142 is positioned below the guide slope 131 before the operation of the drive unit 110 and above the guide slope 131 after the operation of the drive unit 110.

The rod assembly 150 has one end protruding outwardly through one side of the housing 100 and connected to the actuation fork and the other end disposed on the inside of the housing 100 to be reciprocated by the power transmission mechanism 140 .

The rod assembly 150 includes a movable member 154 reciprocated by the power transmission mechanism 140, a first rod 151 movably coupled to the movable member 154, a first rod 151 coupled to the first rod 151, And a second rod 153 connected to the actuation fork.

The moving member 154 is installed so as to reciprocate linearly in the housing 100 by the power transmission mechanism 140.

The first rod 151 is coupled through the moving member 154 and is screwed to move in the moving member 154. That is, the first rod 151 and the moving member 154 are respectively formed with threads so that the first rod 151 is rotated and is moved by the moving member 154.

One end of the second rod 153 protrudes to the outside of the housing 100 and is connected to the actuation fork and the other end is connected to the first rod 151 by the connecting member 152.

The clutch actuator according to an embodiment of the present invention includes at least one tooth 160 provided at the other end of the rod assembly 150 and includes a tooth 160 of the rod assembly 150 And a ring member 170 having at least one toothed portion 171 corresponding to the toothed portion 171.

Here, the teeth 160 of the rod assembly 150 and the teeth 171 of the ring member 170 interact to compensate for wear of the clutch disk. That is, since the moving distance of the rod assembly 150 due to the operation of the driving unit 110 is limited to a certain value, it is necessary to further move the rod assembly 150 by the worn distance by other means when the clutch disc wears This wear compensation is accomplished by the interaction of the teeth 160 of the rod assembly 150 and the teeth 171 of the ring member 170. The structure of the tooth profile 171 of the ring member 170 and the tooth profile 160 of the rod assembly 150 is disclosed in Japanese Patent Application No. 10-1235975 filed by the applicant of the present application, It will be omitted.

That is, when the tooth 160 at the other end of the rod assembly 150 moves toward the ring member 170 (moves from left to right in the drawing) and penetrates through the ring member 170 as shown in FIG. 3, The second rod 153 of the rod assembly 150 is rotated by the moving member 154 by the interaction of the teeth 160 of the first rod 150 and the teeth 171 of the ring member 170, The second rod 153 of the rod assembly 150 is not rotated when the ring member 170 is disengaged with the teeth 160 of the first and second guide members 150 passing through the ring member 170.

As described above, the teeth of the rod assembly 150 move toward the ring member 170 while passing through the ring member 170, causing the second rod 153 to rotate. At this time, 153, the ring member 170 is moved to the side. The teeth 160 of the second rod 153 penetrate the teeth 171 of the ring member 170 and the second rod 153 is rotated by the moving member 154 while the clutches are operating, When the tooth 160 of the second rod 153 is disengaged from the ring member 170, the second rod 153 is disengaged without rotating so that the second rod 153 is moved to the movable member 170 154 to the ring member 170, thereby compensating wear of the clutch disc.

The operation of the clutch actuator according to an embodiment of the present invention having the above-described structure will be briefly described.

First, when the clutch for shifting is operated during driving, the driving unit 110 is driven.

At this time, the slider 130 moves along the drive shaft 121 by a predetermined distance to the right as shown in FIG. 2, and the sloped surface 121 of the slider 120 is slid toward the power transmission mechanism 140, As shown in Fig. At this time, the rotary member 142 coupled to the shaft member 141 moves along the guide slope 131 of the guide member 130 and is positioned above the guide slope 131.

The hinge housing 143 has one end that is hinged to the moving member 154 by the urging force of the slider 120 and the elastic force of the elastic member 144 when the rotary member 142 moves along the guide slope 131, . At this time, the moving member 154 movably provided in the housing 100 moves from right to left as shown in Fig. 2 due to the pressing force of the slider 120 and the elastic force of the elastic member 144. [ Then, the first rod and the second rod coupled to the shifting member move to the left to actuate the clutch actuating fork.

At this time, the actuation fork of the clutch is a clutch action that presses the diaphragm spring of the clutch with the actuation bearing.

Then, when the operation of the clutch is released, the reaction force of the diaphragm spring of the clutch causes the clutch actuator fork to move to its original position. At this time, the second rod 153 of the rod assembly 150 To the right. The hinge housing 143 hinged to the moving member 154 of the rod assembly 150 is rotated and the rotating member 142 of the power transmitting mechanism 140 located above the guiding slant surface 131 rotates And moves along the guide slope 131 to move to the lower side of the guide slope 131. [ At the same time, the shaft member 141 coupled to the end of the hinge housing 143 moves along the pressing slope 121 of the slider 120, while moving from the upper side to the lower side of the slope 120, To the driving unit 110 side. Then, the slider 120 moves toward the driving unit 110, and the driving shaft 111 of the driving unit 110 idles at this time.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

100: Housing
110: driving part 111:
120: slider 121: pressing slope surface
130: guide member 131: guide slope
140: Power transmission mechanism 141: Shaft member
142: rotating member 143: hinge housing
144: elastic member
150: rod assembly 151: first rod
152: connecting member 153: second rod
154: moving member
160: Tooth type
170: ring member 171: tooth profile

Claims

A drive unit provided with a drive shaft and generating a rotational force;
A slider coupled to the drive shaft linearly by a rotational force of the drive unit and having an inclined surface;
A guide member having an inclined surface facing in a direction opposite to a direction in which the slanted surface of the slider is directed;
A rod assembly extending outwardly from the housing and connected to the clutch actuator fork, for actuating the clutch actuator fork while linearly moving;
And a power transmitting mechanism for transmitting the power of the driving unit to the load assemble while being pressed by the slider and moving along the inclined surface of the guide member,
Further comprising a ring member having at least one tooth formed on the other end of the rod assembly and corresponding to a tooth profile of the rod assembly and having at least one tooth formed circumferentially on the inner circumferential surface thereof.

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The method according to claim 1,
The rod assembly includes:
A moving member which is reciprocated by a power transmission mechanism;
A first rod movably coupled to the shifting member;
A second rod having one end connected to the actuation fork and the other end connected to the first rod;
And a clutch actuator.

The method according to claim 1,
The power transmission mechanism includes:
A hinge housing which is hingedly pivoted once to the rod assembly, and in which a receiving space is formed;
A shaft member provided at the other end of the hinge housing;
An elastic member accommodated in the accommodation space and elastically supporting the rotation shaft;
A rotary member rotatably provided on a rotary shaft;
And a clutch actuator.