KR101439424B1 - Clutch actuator of double clutch for vehicles - Google Patents

Abstract

Provided is a clutch actuator for a vehicular double clutch, capable of enabling management of the compression amount of a sealing boot housing and improving a sealing function using a grid-structured sealing boot fixing tool that has a spring function. The clutch actuator for a vehicular double clutch includes a driving unit that generates a rotary motion; a vertical load acting unit that generates a vertical load; a cam frame; a fork acting unit; a housing that accommodates parts of the driving unit, the vertical load acting unit, the cam frame, and a part of the fork acting unit; a sealing boot that is formed to surround the spindle out of the housing and has an end portion fixed to one side of the housing; and the sealing boot fixing tool having a body that is formed to have a ring shape so as to surround the end portion of the sealing boot fixed to the one side of the housing, and a variable compression structure unit that is positioned inside the body and is configured for the compression amount with respect to the housing of the sealing boot to be variable.

Description

CLUTCH ACTUATOR OF DOUBLE CLUTCH FOR VEHICLES < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch actuator for a vehicle double clutch, and more particularly to a clutch actuator for a vehicle double clutch, which improves the structure of a sealing boot for preventing inflow of moisture and dust while absorbing a swing angle of a spindle.

Generally, the vehicle is installed between the clutch and the propeller shaft to change the engine power appropriately to the running state of the vehicle so as to increase the rotational force or to change it to high speed, to keep the engine in a no- A transmission is provided.

Recently, a double clutch transmission having two power transmission clutches has been developed and its use is increasing. In this double clutch transmission, the first, third, fifth, and seventh gears are connected to one clutch (hereinafter referred to as "first clutch"), and the second, 2 clutch), and the shifting of the double clutch transmission is controlled by a transmission control unit (TCU) so that the first clutch and the second clutch alternately transmit power to the flywheel The shift is made.

When acceleration is performed during normal driving, the engine speed is increased and the gear is shifted to a higher gear according to an appropriate vehicle speed. During a rapid acceleration such as kick down, a rapid downshift is performed, The traveling speed of the vehicle suddenly increases.

When the pedal is depressed, the double clutch actuates the actuation bearing provided in the actuation bearing system operated by the clutch actuator to move in the direction of the transmission input length to press or release the diaphragm spring of the clutch to transmit the power of the engine, .

Here, the clutch actuator has a role of pulling or pushing the actuation fork of the actuation bearing system by the force acting by the rotation of the motor and the force acting by the linear motion of the motor and the vertical load of the spring being switched to the horizontal load .

The clutch actuator includes a driving unit for generating a rotational force, a vertical load applying unit for generating a vertical load, a cam frame for converting a rotational motion of the driving unit into a linear motion and converting the vertical load into a horizontal load, And a fork acting portion for actuating the actuation fork in conjunction with the motion.

Such a double clutch is provided with two clutches, and the load characteristics required by the respective clutches are different, so that a clutch actuator for transmitting and interrupting the power of the clutch is separately provided according to the load characteristics of each clutch. That is, in the two clutch actuators, the cam profile of the cam frame to which the vertical load is applied is formed in different shapes according to the load characteristics required by the clutch.

Such a clutch actuator of a conventional vehicle double clutch is shown in Fig. In the clutch actuator of the conventional double clutch for vehicle shown in Fig. 1, the clutch actuator of the present invention is a clutch actuator for preventing the inflow of moisture and dust while absorbing the swing angle generated when the spindle 1 is operated by an actuation fork (not shown) A sealing boot 2 is mounted, which simply mounts the sealing boot 2 on one side of the housing 3 without a separate device due to space limitation as shown in the conventional case. Specifically, as shown in Fig. 2, the end 2a of the sealing boot 2 is simply coupled to the groove 3a formed on one side of the housing 3. As shown in Fig. However, since the end portion 2a of the conventional sealing boot 2 is formed in a simple ring shape, the amount of compression to the housing 3 is difficult to be properly managed, and the sealing function is also limited.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a sealing boot securing mechanism having a lattice structure having a spring function so as to facilitate the management of the compression amount with respect to the housing of the sealing boot, A clutch actuator for a vehicle, and a clutch actuator for a vehicle.

According to an aspect of the present invention, there is provided a clutch actuator for a vehicle double clutch, the clutch actuator comprising: a driving unit for generating rotational motion; a vertical load acting unit for generating a vertical load; A cam frame for converting linear motion of the cam mechanism into a horizontal load and converting a vertical load of the vertical load acting section into a horizontal load and linearly moving the linear motion; A housing for accommodating the driving part, the vertical load acting part, the cam frame, a part of the fork acting part, and a housing formed to surround the spindle from the outside of the housing A sealing boot having an end fixed to one side of the housing; A sealing boot securing mechanism including a body formed in a ring shape to surround an end portion of the ring boot and a variable compression structure portion disposed inside the body such that a compression amount of the sealing boot can be varied with respect to the housing .

Wherein the driving unit includes a linear reducer having a spiral groove formed on an outer circumference thereof and a vertical load acting unit provided on one side of the driving unit and having a roller unit for applying a vertical load to the end of the cam frame, And a guide member for supporting the elastic member and guiding the vertical movement of the roller unit.

Wherein the variable compression structure includes a pressing body which contacts and presses the outer surface of the sealing boot, a supporting body located inside the body, and a distance between the pressing body and the supporting body by slantingly connecting the pressing body and the supporting body So as to be variable.

It is preferable that the connecting bodies are formed as a pair, and the pressing body and the supporting body are connected to each other in an inclined manner in opposite directions.

The variable compression structure may be formed on the inner side of the body at a plurality of equal intervals along the circumferential direction.

According to the clutch actuator of the vehicle double clutch as described above, by applying the sealing boot securing mechanism having the lattice structure having the spring function, it is possible to facilitate the management of the compression amount with respect to the housing of the sealing boot, .

1 is a view showing a clutch actuator of a conventional double clutch for a vehicle.
2 is a view showing a mounting structure of a conventional sealing boot.
3 is a cross-sectional view showing a clutch actuator of a vehicle double clutch according to an embodiment of the present invention.
4 is a view showing a mounting structure of a sealing boot applied to a clutch actuator of a vehicle double clutch according to an embodiment of the present invention.
5 is a view showing a sealing boot fixing mechanism applied to a clutch actuator of a vehicle double clutch according to an embodiment of the present invention.
6 is a view showing a free state of a variable compression structure of a sealing boot fixing mechanism applied to a clutch actuator of a double clutch for a vehicle according to an embodiment of the present invention.
7 is a view showing a compression state of a variable compression structure of a sealing boot fixing mechanism applied to a clutch actuator of a double clutch for a vehicle according to an embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. In the following description of the present invention, detailed description of known related arts will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured by the present invention. In addition, the thickness of the lines and the size of the constituent elements shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, terms used are terms defined in consideration of functions in the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be based on the entire contents of the present specification.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is a sectional view showing a clutch actuator of a double clutch for a vehicle according to an embodiment of the present invention, FIG. 4 is a view showing a mounting structure of a sealing boot applied to a clutch actuator of a double clutch for a vehicle according to an embodiment of the present invention, 5 is a view showing a sealing boot securing mechanism applied to the clutch actuator of the vehicle double clutch according to the embodiment of the present invention, and Fig. 6 is a view showing a variation of the sealing boot securing mechanism applied to the clutch actuator of the vehicle double clutch according to the embodiment of the present invention FIG. 7 is a view showing a compressed state of the variable compression structure of the sealing boot fixing mechanism applied to the clutch actuator of the vehicle double clutch according to the embodiment of the present invention. FIG.

3 to 7, a clutch actuator 10 of a vehicle double clutch according to an embodiment of the present invention includes a driving unit 100, a cam frame 200, a vertical load acting unit 300, a fork action unit 400 A housing 500, a sealing boot 600, and a sealing boot securing mechanism 700.

The driving unit 100 is installed on the outside of the housing 50 so that the driving shaft 110 is positioned on the inside of the housing 500. The driving unit 100 includes a linear linear reducer 121 having a spiral- reducer 120 is fixed to the drive shaft 110 and rotated. The end of the linear reducer 120 is supported to be rotated by the bearing 51 fixed in the housing 500.

The cam frame 200 is fitted with the pin member 210 which is inserted into the spiral groove 121 of the linear reducer 120 and moves along the spiral groove 121 when the linear reducer 120 is rotated when the driving unit 100 is driven Respectively. The cam profile 220 receiving the vertical load generated in the vertical load applying unit 300 is detachably fixed to the one end of the cam frame 200 by the attaching / detaching unit 230.

The pin member 210 is fixed to the cam frame 200 and coupled to the spiral groove 121 of the linear reducer 120 to be moved in the horizontal direction along the spiral groove 121 when the linear reducer 120 rotates. . That is, the pin member 210 is for linearly moving the cam frame 200 by converting the rotational motion of the driving unit 100 into linear motion.

The vertical load applying unit 300 includes a roller unit 310 provided at one side of the driving unit 200 and acting as a vertical load to an end of the cam frame 200, And a guide unit 330 for supporting the elastic member 320 and guiding the vertical movement of the roller unit 310.

The roller unit 310 includes a roller support unit 311 that is vertically movable with respect to the guide member 330 and a roller 312 that is rotatably fixed to the lower side of the roller support unit 311. A flange portion 311a for supporting the lower end of the elastic member 320 is formed at the lower end of the roller supporting portion 311. [

The roller 312 is rotatably fixed to a lower portion of the flange 311a and reciprocates in contact with the upper surface of the cam profile 220. The roller 312 receives a vertical load by the elastic member 320, 220) to act as a horizontal load.

The upper end of the guide part 330 is fixed to the inner upper surface of the housing 500 and a support part 331 for supporting the upper end of the elastic member 320 is protruded from the upper part of the guide part 330. A guide groove 332 is vertically formed at the center of the guide part 330 to receive the roller supporting part 311 and reciprocate.

The fork actuating part 400 includes a movable member 410 fixed to the upper end of the fork actuating part 400 and movable in a reciprocating manner within a predetermined space within the housing 500, 500 and the end of which is constituted by a spindle 420 fixed to an actuation fork (not shown) of the vehicle.

The sealing boot 600 is for preventing moisture and dust from flowing into the actuation fork of a vehicle while absorbing a swinging angle generated when the spindle 420 operates, And the end of the spindle 420 is fixed to one side of the housing 500.

A protrusion 610 for fixing is formed at an end of the sealing boot 500 and a groove 510 is formed at one side of the housing 500 to be coupled with the protrusion 610.

The sealing boot fixing mechanism 700 includes a body 710 formed in a ring shape so as to surround an end of a sealing boot 600 fixed to one side of the housing 500, And a variable compression structure 720 configured to vary the compression amount of the sealing boot 600 with respect to the housing 500.

The variable compression structure 720 includes a pressing body 721 which contacts and presses the outer surface of the sealing boot 600, a supporting body 722 located inside the body 710, a pressing body 721, And a connecting body 723 connecting the supporting body 722 in a slant manner so that the distance between the pressing body 721 and the supporting body 722 can be varied.

At this time, it is preferable that the connecting member 723 is configured such that the elastic pressing force is formed as a pair as shown in FIG. 6, so that the pressing body 721 and the supporting body 722 are slanted in opposite directions to each other. When the coupling body 723 having such a pair of staggered structures is applied, the pressing body 721 can more stably contact and press the outer surface of the sealing boot 600, and the sealing boot 600 The amount of compression applied to the housing 500 can be more easily managed.

Meanwhile, as shown in FIG. 5, the variable compression structure 720 may be formed on the inner side of the body 710 such that a plurality of the variable compression structures 720 are equally spaced along the circumferential direction.

When the plurality of variable compression structures 720 are formed at equal intervals along the circumferential direction on the inside of the body 710, the elastic pressing force applied to the outer surface of the sealing boot 600 through the pressing body 721 is transmitted to the sealing It is possible to uniformly act on the outer surface of one side of the boot 600, so that the sealing function can be improved.

According to the clutch actuator of the vehicle double clutch according to the embodiment of the present invention as described above, by applying the sealing boot securing mechanism of the lattice structure having the spring function, it is possible to easily manage the compression amount of the sealing boot with respect to the housing And the sealing function can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that the invention may be variously modified and changed.

100: driving part 110:
120: Linear reducer 121: Spiral groove
200: cam frame 210: pin member
220: cam profile 300: vertical load acting part
310: roller portion 311: roller support portion
312: roller 320: elastic member
330: guide part 400: fork function part
410: moving member 420: spindle
500: housing 600: sealing boot
700: sealing boot fixing device 710: body
720: Variable compression structure

Claims (5)

A driving unit for generating rotational motion;
A vertical load acting portion for generating a vertical load;
A cam frame for converting a rotational motion of the driving unit into a rectilinear motion and converting a rotational force resulting from the rotational motion into a horizontal load and converting a vertical load of the vertical load application unit into a horizontal load to linearly move;
A fork acting part linearly moving in conjunction with the linear motion of the cam frame and having a spindle for actuating an actuator fork of the vehicle;
A housing accommodating the driving unit, the vertical load acting unit, the cam frame, and a part of the fork acting unit;
A sealing boot formed to surround the spindle from the outside of the housing and having an end fixed to one side of the housing; And
A body formed in a ring shape so as to surround an end of a sealing boot fixed to one side of the housing and a variable compression structure part positioned inside the body so that a compression amount of the sealing boot can be varied with respect to the housing A sealing boot securing mechanism;
And a clutch actuator for driving the clutch. The method according to claim 1,
Wherein the driving unit includes a linear reducer having a spiral groove formed on an outer circumference thereof and a vertical load acting unit provided on one side of the driving unit and having a roller unit for applying a vertical load to the end of the cam frame, And a guide member for supporting the elastic member and guiding the vertical movement of the roller portion. 2. A clutch actuator for a vehicle double clutch, comprising: an elastic member for generating a vertical load by supporting an elastic member; The method according to claim 1 or 2,
Wherein the variable compression structure includes a pressing body which contacts and presses the outer surface of the sealing boot, a supporting body located inside the body, and a distance between the pressing body and the supporting body by slantingly connecting the pressing body and the supporting body And a connecting member which is provided on the clutch body so as to be variable. The method of claim 3,
Wherein the coupling bodies are formed as a pair, and the pressing body and the support body are connected to each other in a slanting manner in opposite directions to each other. The method of claim 4,
Wherein a plurality of the variable compression structure portions are formed at equal intervals in the circumferential direction on the inner side of the body.

Images