KR101837544B1 - Gear Actuator of Dual Clutch Transmission - Google Patents

Abstract

Provided is a driving device of a dual clutch transmission capable of independently selecting odd-numbered gears and even numbered gears through a single-motor cylindrical select-cam control method. According to an embodiment of the present invention, the driving device of a dual clutch transmission comprises: a control shaft which includes a shift gear providing rotational force and axial movement force to change a shift-speed selected by selecting odd-numbered gears and even numbered gears of the transmission; a shift device providing rotational force to the control shaft; and a select device providing axial movement force to the control shaft. The select device includes: a rotating select motor; a cylindrical select cam connected to the select motor and rotating, and including a helicoid curve formed on an outer surface thereof as a groove; and a select lever having one side coupled to the shift gear and the other side coupled to the helicoid curve to provide axial movement force to the shift gear along the helicoid curve by rotating the select cam.

Description

[0001] The present invention relates to a dual clutch transmission,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for a dual clutch transmission, and more particularly, to a drive device for a dual clutch transmission that implements an automatic transmission based on a manual transmission operation.

In general, an Automated Manual Transmission (AMT) is a transmission configured to have a simple structure of a manual transmission including an external gear set and a mechanical clutch, and a convenient operating structure and shift algorithm of the automatic transmission while maintaining economical fuel economy.

The automatic manual transmission is configured to automatically operate the clutch and shift lever according to the engine speed and shift timing in the structure of the manual transmission. For example, a drive system of an automatic manual transmission implements shifting in a transmission by a shift operation and a select operation.

For example, a dual clutch transmission (DCT) has advantages of low power loss, easy operation, and high shift time. For example, when the vehicle travels in the first stage which is the hall means, the two stages of the pair means are in a state of being able to be shifted. When the transmission is shifted in such a state, the first stage, which is the hole means, is cut off and the two stages of the even stages are connected.

Due to this characteristic, the dual clutch transmission shortens the shifting time and makes the shifting time shorter than the general manual transmission. For example, the dual clutch transmission drive implements a select operation for selecting the even or the odd means and a shift operation for coupling the gear in the even or odd means selected by the select operation.

The select operation consists of a motor 1-axis control system that controls one axis with one motor, a 2-solenoid 2-axis control system that controls two axes with two solenoids, and one motor and one- There is a one-motor cylinder control system for controlling two axes by using a cylinder having a single cylinder.

In the case of the 1-motor single-axis control system, the response time is slowed down in frequent shifts. 2 Solenoid Two-axis control system has large operating noise. And in the case of 1 motor cylinder control method, if the select operation becomes difficult due to the external load during the select operation, the cylinder will not return to the original position, and if the motor can not stop at the predetermined position during the selection, . Therefore, the response time is delayed, and the ride feeling is lowered.

An object of the present invention is to provide a driving apparatus for a dual clutch transmission in which odd-numbered stages and even-numbered stages can be independently selected by a single-motor cylindrical select-cam control system. SUMMARY OF THE INVENTION It is an object of the present invention to provide a driving apparatus for a dual clutch transmission which can improve a noise problem and can move to an existing gear stage or maintain an existing gear stage when an external load can not be operated.

The driving apparatus for the dual clutch transmission according to an embodiment of the present invention includes a shift gear that is provided with a shift operating force and an axial shifting force for selecting the even and the odd steps of the transmission, A shift mechanism for providing a rotational force to the control shaft, and a select mechanism for providing an axial movement force to the control shaft, wherein the select mechanism includes a rotating select motor, And a second cam that is coupled to the shift gear on one side and coupled to the helical core curve on the other side so that the helical core curve is rotated by rotation of the select cam, A selector lever for providing an axial movement force to the shift gear, The.

Wherein the helical core curve has a first height portion having a range set along a circumferential direction on one side of the select cam, a second height portion having a height difference from the first height portion on the diametrically opposite side of the first height portion, And a first inclined portion and a second inclined portion connecting the both ends of the first height portion and both ends of the second height portion with a predetermined range along the circumferential direction.

The first height portion, the first inclination portion, the second height portion, and the second inclined portion may be formed in a phase of 90 degrees along the circumferential direction of the select cam.

Wherein the first inclined portion is connected to the first height portion at the same height as the first inclined portion and is connected to the second height portion at the same height and the second inclined portion is connected at the same height as the second height portion, And may be connected at the same height as the first height portion.

Wherein the selector lever comprises a pair of lever means and a hole means lever arranged at a predetermined angle, the lever means being coupled to the helical core curve, Wherein the first and second cams are coupled to the helical core curve while maintaining the angle with the even-numbered lever so as to provide an axial movement force to the shift gear, It is possible to provide an axial movement force to the means shift gear.

The even-numbered lever and the holed lever may be coupled to the helical-core curve at an angle of 90 degrees.

The selector mechanism includes an even-numbered detent pin provided at one side of the even-numbered shift gear and defining an even-numbered selector position, and an odd-numbered detent pin provided at one side of the odd- As shown in FIG.

The shift mechanism section includes a pair of shifting means, a pair of shifting means, a pair of shifting means, a pair of shifting means, a pair of shifting means, And may include a speed reducer and an Hall reducer.

The shift mechanism section may further include a shift setting member for setting a rotation range of the protrusion formed on the shift gear so as to limit learning of a reference point for rotation of the shift gear and a maximum shift distance.

The shift setting member may include an even-number setting unit for setting a rotation range of the even-numbered shift gear relative to the protrusion, and an odd-number setting unit for setting a rotation range for the protrusion of the odd-numbered shift gear.

In one embodiment of the present invention, one helical core curve is provided on the cylindrical select cam of the select mechanism, and the select lever (pair, hole lever) is rotated in the axial direction along the helical core curve by the rotation of the select cam As it moves, the even-numbered stage and the hole means can be independently selected by the 1-motor cylindrical select cam control system.

One embodiment can improve the noise problem due to the select operation as the select lever is coupled to the helical core curve and is moved axially along the helical core curve by the rotation of the select cam.

In the embodiment, since the first and second height portions and the first and second inclined portions of the helical core curve are set in the circumferential direction by the rotation of the select cam, the select operation can not be performed by the external load during the selection , The existing gear range can be maintained within the set range of each part.

1 is a perspective view illustrating a driving apparatus for a dual clutch transmission according to an embodiment of the present invention.
2 is a bottom view of Fig.
3 is a right side view of Fig.
Fig. 4 is a rear view of Fig. 1; Fig.
FIG. 5 is a perspective view of the seat lifting mechanism shown in FIG. 1; FIG.
Fig. 6 is a perspective view showing the select mechanism section shown in Fig. 1; Fig.
7 is a state in which a helical core curve formed on the select cam is opened.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

FIG. 1 is a perspective view showing a driving apparatus for a dual clutch transmission according to an embodiment of the present invention, and FIG. 2 is a bottom view of FIG. 1 and 2, a driving apparatus for a dual clutch transmission according to an embodiment includes a control shaft 1, a shift mechanism unit 2, and a select mechanism unit 3.

The control shaft 1 is provided with a control finger 11 which is moved in an axial direction (select operation) and rotatably operated (shift operation), and which is integrally operated, in order to select a gear position of the transmission.

The shift mechanism unit 2 and the select mechanism unit 3 are configured to provide a rotational force and an axial direction movement force to the control shaft 1 so as to rotate and axially move the control shaft 1 to perform a shift operation and a select operation .

That is, the control shaft 1 is moved in the axial direction in accordance with the select operation of the select mechanism section 3. Therefore, the control finger 11 provided on the control shaft 1 selects one of the shift lugs (not shown) for selecting each gear range.

Then, the control shaft 1 is rotated in accordance with the shift operation of the shift mechanism unit 2. Therefore, the control finger 11 provided on the control shaft 1 moves the selected shift lug (not shown) in the axial direction. Thereby, the control finger 11 implements the shift of the speed change stage selected by the select mechanism section 3.

For example, the control shaft 1 includes an even-numbered control shaft 12 and an even-numbered control shaft 13. The control finger 11 includes an even-numbered control finger 121 provided on the even-numbered control shaft 12 and an odd-numbered control finger 131 provided on the odd-numbered control shaft 13.

Fig. 3 is a right side view of Fig. 1, and Fig. 4 is a rear view of Fig. Referring to Figs. 1 to 4, the even-numbered control shaft 12 has an even-numbered shift gear 112 on one side. The hall means control shaft 13 is installed side by side with the even-numbered control shaft 12 and has an odd-numbered-way shift gear 113 on one side. The pair and odd unit shift gears 112 and 113 are selectively operated by the select mechanism unit 3.

Although not shown, as the shift lug selected by the control finger 11, that is, the mating and hitting means control fingers 121 and 131, moves in the axial direction, the shift rail coupled to the selected shift lug is moved in the axial direction. As a result, the shift fork provided on the shift rail moves the synchronizer sleeve in the axial direction to complete the shifting of the selected speed change stage in the transmission.

More specifically, the shift mechanism unit 2 includes an even-numbered shift mechanism 22 for rotating the even-numbered control shaft 12 and an odd-numbered shift mechanism 23 for rotating the odd-numbered control shaft 13 .

FIG. 5 is a perspective view of the seat lifting mechanism shown in FIG. 1; FIG. 1 to 5, the shift mechanism unit 2 includes a rotating counter gear shifting motor 221, a counter gear shifting motor 231, and an even-numbered reduction gear unit 224 and an odd-numbered reduction gear unit 234 .

The pair of Hall gear reducers 224 and 234 are coupled to the pair of Hall gear shift motors 221 and 231 respectively and to the other pair of the pair of Hall gear shift gears 112 and 113 respectively.

As an example, the pair and odd shift motors 221 and 231 are examples of actuators that operate the shift mechanism 2 and may be formed of a BLDC (Brushless DC) motor. The rotational forces of the pair and odd unit shift motors 221 and 231 are transmitted to the even and odd-numbered control shafts 12 and 13 through the pair of the through-hole reduction gears 224 and 234 and the pair- Respectively.

The pair of Hall effect reducers 224 and 234 provide the output of the pair of Hall effect shift motors 221 and 231 to the pair of Hall effect shift gears 112 and 113 at an increased rotational torque. As an example, the pair of Hall effect reducers 224 and 234 increase the torque primarily by the gear ratio 1: 4 and increase the torque secondarily by the pair of the hall means shift gears 112 and 113 and the gear ratio 1:10 .

Therefore, the pair of the counter shaft gears 112, 113 rotating with the increased torque rotate the pair of the pair of the means control shafts 12, 13. The pair-and-mounter control shafts 12 and 13 shift and rotate the pair-and-hold means control fingers 121 and 131.

On the other hand, the shift mechanism portion 2 further includes a shift setting member 24 for setting a rotation range of the projection formed on the shift gear so as to limit learning of a reference point for rotation of the shift gear and the maximum shift distance.

For example, the shift setting member 24 includes an even-number setting means 242 for setting a rotation range for the protrusion 114 formed on one side of the even-numbered means shift gear 112, And a hole setting unit 243 for setting a rotation range of the protrusion 115 formed on one side of the protrusion 115.

That is, by the driving of the pair and odd-numbered unit shift motors 221 and 231, when the pair of the odd-numbered unit shift gears 112 and 113 rotate, 243), so that the rotation range of the pair of the odd-numbered-way shift gears 112, 113 can be set and limited. Therefore, the even and odd-numbered shift gears 112 and 113 are not excessively rotated.

Fig. 6 is a perspective view showing the select mechanism section shown in Fig. 1; Fig. Referring to Figs. 1 to 4 and 6, the select mechanism 3 includes a select motor 31, a select motor 31, and a helical core curve 35 that rotates and is formed as a groove on the outer surface of the select motor 31 And a select lever 33 (332, 333) coupled to the shift gear 11 (112, 113) on one side and coupled to the helical core curve 35 on the other side. The select lever 33 (332, 333) is coupled to provide an axial movement force to the shift gear 11 (112, 113) along the helical core curve 35 by the rotation of the select cam 32.

7 is a state in which a helical core curve formed on the select cam is opened. Referring to Fig. 7, the select cam 32 has a helical core curved line 35 formed on its outer surface as a groove. That is, the helical core curve 35 provided in the select cam 32 is commonly used for selecting the pair and the hole means.

The select lever 33 includes an even-numbered lever 332 and an even-numbered lever 333 arranged at a predetermined angle so as to correspond thereto. The pair and the hole levers 332 and 333 are disposed with a phase difference of 90 degrees and are coupled to the helical core curve 35.

The even-numbered lever 332 is coupled to the helical core curve 35 on one side and moves along the helical core curve 35 by the rotation of the select cam 32, Provide movement force.

To this end, the even-numbered lever 332 is coupled to the even-numbered means shift gear 112 on the other side and slidably engaged with the guide member 37 disposed in the axial direction of the even-numbered control shaft 12. [

The hollow means lever 333 is coupled to the helical core curve 35 on one side and moves along the helical core curved line 35 by the rotation of the select cam 32, Provide movement force.

To this end, the hole lever 333 is coupled to the hole means shift gear 113 on the other side and is slidably engaged with the guide member 37 disposed in the axial direction of the hole means control shaft 13.

On the other hand, the select mechanism section 3 is provided at one side of the even-numbered means shift gear 112 and is provided at one side of the odd-numbered shift gear 113, And a hole means detent pin 283 that defines a means select position.

The helical core curve 35 has a first height H1, a second height H2 and a first slope C1, which are separated by height along the circumferential direction of the select cam 32 and form a closed curve. And a second inclined portion C2.

The first height portion H1 has a range set along the circumferential direction at one side of the select cam 32. [ The second height portion H2 has a range set along the circumferential direction with a height difference H from the first height portion H1 in the diametrically opposite side select cam 32 of the first height portion H1. The first inclined portion C1 and the second inclined portion C2 are connected at both ends of the first height portion H1 and both ends of the second height portion H2 in a gentle curve having a predetermined range along the circumferential direction .

The first height portion H1, the first inclination portion C1, the second height portion H2 and the second inclination portion C2 are arranged at 90 degrees in the circumferential direction of the select cam 32, . The first inclined portion C1 is connected gently to the same height as the first height portion H1 and upwardly and gently connected to the same height as the second height portion H2. The second inclined portion C2 is gently connected at the same height as the second height portion H2 and downwardly connected to the second height portion H2 at the same height as the first height portion H1.

On the other hand, because the select lever 33, that is, the pair of the hole levers 332 and 333 is coupled to one helical core curve 35 of the select cam 32 with a phase difference of 90 degrees, Hole means levers 332 and 333 are moved in accordance with the rotation angle of the pair of right and left means, and the select position of the pair means is changed.

For example, in FIG. 7, when the select cam 32 is at the 0-degree position by driving the select motor 31, the hole lever 333 is located at the A1 portion of the first inclined portion C1, The lever 332 is located at the A2 portion of the first height portion H2.

When the select cam 31 is driven to rotate the select cam 32 to the 90-degree position, the even-numbered lever 332 is moved in the A2 direction of the first inclined portion C1 by the first inclination And moves to the B1 portion of the first height portion H2 and the second height portion H2 so that the hole lever 333 maintains the height of the A2 portion of the first inclined portion C1 and the first height portion H1 unchanged.

Therefore, the select mechanism section 3 can individually control the select operation of the pair, the hole lever 332, 333, and the pair and the hole control shafts 12, 13 connected thereto. In addition, even when it is impossible to operate due to an external load (i.e., the shifting of the pair means is impossible), it is possible to move to the existing speed change stage (hole means) or keep the existing speed change stage (the hole means) unchanged.

The operation of the driving apparatus for the dual clutch transmission according to the embodiment having the above-described structure will be described. The operation process of the select mechanism unit 3 and the shift mechanism unit 2 will be described in order to select a specific stage of the transmission.

1, 3, and 4, the select cam 32 is rotated by driving the select motor 31 of the select mechanism section 3 so that the helical core curve 35 of the select cam 32 is rotated, Hole lever 332 or 333 coupled to the selector cam 32 is moved in the axial direction of the select cam 32. [

At this time, the pair and the hole levers 332 and 333 have a predetermined phase difference and the first height portion H1, the first slope portion C1, the second height portion H2, and the second height portion H2 of the helical core curve 35, Two inclined portions C2 are sequentially passed.

Thus, the pair-and-one-way shift gears 112 and 113, which are coupled to the pair-and-hold means levers 332 and 333, move the pair-and-midsection control shafts 12 and 13 in the axial direction, Select the lug.

As described above, in one embodiment, the selector cam 31 having one helicoidal curve 35 and the select motor 31 are used to independently control operation of the pair means. Thus, one embodiment can improve the noise problem compared to the prior art.

Then, the pair of the pinion shaft shift shafts 112 and 113 are rotated by the driving of one of the pair of the pinion shaft shift motors 221 and 231 of the shift mechanism unit 2, Hole control fingers 121 and 131 provided on the shift lever 121 rotate to move the selected shift lug in the axial direction.

As a result, the shift rail connected to the shift lug is moved in the axial direction and the shift fork moves the synchronizer sleeve in the axial direction. Thus, the shifting of the selected gear range is realized. This changes the gear position of the transmission.

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 exemplary embodiments, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

1: Control shaft 2: Shift mechanism part
3: select mechanism 11: control finger
12, 13: pair, hole means control shaft 22, 23: pair,
24: shift setting member 31: select motor
32: Cylindrical select cam 33: Select lever
35: helical core curve 37: guide member
112, 113: pair, hole means shift gear 114, 115:
121, 131: pair, hole means control finger 221, 231: pair,
224, 234: pair and hall means decelerator 242, 243: pair,
332, 333: mating hole means lever 382, 383: mating hole means detent pin
C1, C2: first and second inclined portions H1, H2: first and second height portions
ΔH: height difference

Claims (10)

A control shaft having a shift gear that provides a rotational operating force and an axial moving force to select the even and the odd steps of the transmission to implement the shifting of the selected gear range;
A shift mechanism for providing rotational force to the control shaft; And
A selector mechanism for providing an axial movement force to the control shaft,
/ RTI >
The select mechanism section
Rotating Select Motor,
A cylindrical select cam connected to the select motor and having a helical core curve formed on its outer surface as a groove,
A select lever coupled to the shift gear on one side and coupled to the helical core curve on the other side for providing an axial movement force to the shift gear along the helical core curve by rotation of the select cam,
/ RTI >
The select lever
And an even-number lever and a hole lever,
The select mechanism section
An even-numbered detent pin for restricting axial movement of the even-numbered lever along the helical core curve to define an even-numbered sense position, and
Hole means for limiting axial movement of said hole means lever along said helical core curve to define hole means select position,
Further comprising: a second clutch for selectively engaging the first clutch and the second clutch.
The method according to claim 1,
The helical core curve
A first height portion having a range set along a circumferential direction at one side of the select cam,
A second height portion having a height different from that of the first height portion in the diametrically opposite side of the first height portion and set in the circumferential direction,
A first inclined portion connecting both ends of the first height portion and both ends of the second height portion with a predetermined range along the circumferential direction,
And a drive mechanism for driving the dual clutch transmission.
3. The method of claim 2,
The first height portion, the first slope portion, the second height portion, and the second slope portion
And is formed in a 90-degree phase along the circumferential direction of the select cam.
The method of claim 3,
The first ramp
The second height portion being connected to the second height portion at the same height as the first height portion,
The second ramp
The first height portion being connected to the first height portion at the same height as the second height portion and being connected at the same height as the first height portion.
The method according to claim 1,
The even-numbered lever
Wherein said selector cam is coupled to said helical core curve to provide an axial movement force to the even means shift gear along said helical core curve by rotation of said select cam,
The hole lever
Wherein the first gear is engaged with the helical core curve while maintaining the angle with the even-numbered lever, and the axial cam is provided with an axial movement force on the odd-numbered shift gear along the helical core curve by rotation of the select cam
A drive device for a dual clutch transmission.
6. The method of claim 5,
The even-numbered lever and the lever-
Wherein the helical core curve is coupled to the helical core curve with a phase difference of 90 degrees.
6. The method of claim 5,
The mating detent pin
A shift lever that is provided on one side of the even-
The hole means detent pin
And is provided on one side of the above-mentioned hole means shift gear
A drive device for a dual clutch transmission.
The method according to claim 1,
The shift mechanism section
A rotating even-numbered shifting motor and an odd-numbered shifting motor, and
An even-numbered speed reducer and an odd-numbered speed reducer which are coupled to the even-numbered means shift motor and the odd-numbered shift motor at one side and coupled to the other-
And a drive mechanism for driving the dual clutch transmission.
A control shaft having a shift gear that provides a rotational operating force and an axial moving force to select the even and the odd steps of the transmission to implement the shifting of the selected gear range;
A shift mechanism for providing rotational force to the control shaft; And
A selector mechanism for providing an axial movement force to the control shaft,
/ RTI >
The select mechanism section
Rotating Select Motor,
A cylindrical select cam connected to the select motor and having a helical core curve formed on its outer surface as a groove,
A select lever coupled to the shift gear on one side and coupled to the helical core curve on the other side for providing an axial movement force to the shift gear along the helical core curve by rotation of the select cam,
/ RTI >
The shift mechanism section
To limit the learning of the reference point and the maximum shift distance for the rotation of the shift gear
A shift setting member for setting a rotation range of a projection formed on the shift gear,
Further comprising: a second clutch for selectively engaging the first clutch and the second clutch.
10. The method of claim 9,
The shift setting member
An even-number setting unit for setting a rotation range of the even-numbered shift gear relative to the protrusion, and
An odd-numbered-portion setting means for setting a range of rotation of the odd-
And a drive mechanism for driving the dual clutch transmission.

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