KR101181049B1 - Shifting Apparatus for Dual Clutch Transmission - Google Patents

Abstract

The present invention provides a simple structure and sufficient rigidity and durability, and the pre-selection function of allowing the shifting system to engage two different shifting stages at the same time and to perform the shifting only by switching between the engagement and release states of the two clutches. The present invention provides an active interlock function that automatically prevents two gear stages of a shift system from being engaged at the same time, and a shift of a dual clutch transmission that enables skip shifting.

DCT, Shift, Preselect, Skip Shift

Description

Shifting Apparatus for Dual Clutch Transmission

The present invention relates to a transmission of a dual clutch transmission, and more particularly, to a transmission of a dual clutch transmission having both an active interlock function and a skip shift function.

Unlike the conventional single clutch clutch system, the dual clutch transmission is composed of two sets of clutches. The first clutch is a transmission system designed to control the hole gear and the second clutch is an even gear. As well as easy to drive, there is an advantage that can achieve a higher fuel efficiency improvement than a manual transmission vehicle.

In addition, since the dual clutch transmission does not have the acceleration stop feeling phenomenon generated in the single-clutch transmission, the shift feeling is also very excellent.

In order to control the dual clutch transmission as described above, the clutch actuator for controlling the clutch, the transmission for controlling the shift fork of the transmission and the actual gear shifting, and the transmission according to the vehicle speed and the throttle valve degree, etc. There is a controller to control.

Here, the shifting device not only shifts gears, but also engages gear stages belonging to two shifting systems each divided into a hole means and a pair means at the same time and shifts only by switching between the engagement and release states of the two clutches. It must be equipped with a preselect function.

In addition, an active interlock function for preventing two gears belonging to the same shift system from being engaged at the same time should be provided.

Of course, the transmission device should be able to provide the basic functions as described above in a simple configuration and structure, and its durability should be secured, and of course, it is more preferable if a skip shift such as 6 to 2 speeds is possible.

The present invention has been devised by the necessity as described above, and provides a simple structure and sufficient rigidity and durability, and the shifting system engages two different shifting stages at the same time and shifts are made only by switching between the engagement and release states of the two clutches. Its purpose is to provide an active interlock function that enables the automatic shift prevention of two gears of the same shift system at the same time as well as a dual clutch transmission that enables skip shifting. .

The transmission device of the present invention the dual clutch transmission devised to achieve the object as described above

A plurality of shift lugs arranged reciprocally in a direction parallel to each other and arranged at equal intervals and thicknesses;

A shift operation unit inserted into an operation space provided at the center of the shift lug to linearly move the shift lug;

The shift operation unit includes a shift finger for shifting by selecting one shift lug among the plurality of shift lugs by a linear motion and performing a shift by linearly moving a selected shift lug by a rotation motion, and a linear motion of the shift finger. It is characterized in that it comprises a neutral return device for moving in conjunction with the shifting motion of the shifting finger to position the shifting lug in the neutral state and the shifting lug belonging to the same shifting system by the shifting finger in a neutral state.

The present invention provides a simple structure and sufficient rigidity and durability, and the pre-selection function of allowing the shifting system to engage two different shifting stages at the same time and to perform the shifting only by switching between the engagement and release states of the two clutches. It enables active interlock function and skip shifting, which automatically prevents two gears of the shift system from being engaged at the same time.

1 and 2, an embodiment of the present invention includes a plurality of shift lugs SL arranged in a direction parallel to each other and arranged at equal intervals and thicknesses, and a plurality of shift lugs SL It is configured to include a shift operation unit (1) inserted into the operating space (S) provided in the center for linear movement of the shift lug (SL); The shift operation unit 1 selects one of the shift lugs SL from the plurality of shift lugs SL by a linear movement, and shifts the selected shift lug SL by a linear movement to perform a shift. Shifting finger (3) and the shifting finger (SL) being shifted by the shifting finger (3) is moved in conjunction with the linear movement of the shifting finger (3) and linked to the rotational movement of the shifting finger (3) And a neutral returning device for positioning another shift lug SL belonging to the same shift system in a neutral state.

Of course, the shift fork of the shift stage is connected to each of the shift lugs SL so that each shift stage can be shifted by linear movement to both sides, and the shift lugs SL are illustrated in FIG. As described above, the odd shift stages are assigned to the odd shift stages and the even shift stages are assigned to the shift lugs SL corresponding to each of the even shift stages, and the shift lugs SL and the even shift stages to which the odd shift stages are assigned. The lugs SL are alternately arranged so that the shift lugs SL assigned with shift stages belonging to the same shift system are not disposed adjacent to each other.

For reference, in the present embodiment, the 1 & 3 stage shift lug, the 4 & 2 stage shift lug, the 5 stage shift lug and the R & 6 stage shift lug are sequentially arranged.

The neutral return device is a movable block (5) formed so as to interlock with the linear movement of the shifting finger (3) while allowing the shifting of the shifting finger (3), and is rotatably fixed to the moving block (5) A rotating body 7 which rotates in association with a rotating motion of the finger 3, and is connected to the rotating body 7 to rotate the rotating displacement of the rotating body 7 in the rotational axis direction of the rotating body 7; The moving block 9 for extending and transferring the rotational force transmission body 9 and the rotational displacement from the rotational force transmission body 9 to a linear displacement to linearly move in both directions along the linear movement direction of the shift lug SL. It comprises a neutral return body (11) provided in 5).

The operating space S is formed by a symmetrical shape on both sides of the shift lug SL in which the shift finger 3 and the moving block 5 are inserted in the center, and the shift lug SL is the shift finger. A relatively large operating space is connected to the shifting operation wall 13 to form a relatively narrow operating space S in which (3) is accommodated, and the shifting operation wall 13 to accommodate the moving block 5. It is a structure provided with the return operation wall 15 which forms S).

That is, the space formed by the shift operation wall 13 and the return operation wall 15 is the operating space S. In the drawing, the shift operation wall is located above the space formed by the return operation wall 15. The space formed by (13) is a relatively narrow structure.

The shift finger (3) consists of a finger portion (17) made up of a finger portion (17) inserted between the shift operation wall (13) and an arc-shaped gear formed opposite to the finger portion (17), and A driving shaft 21 is provided between the finger portion 17 and the finger gear portion 19 of the shift finger 3 to provide a rotational motion and a linear motion force to the shift finger 3.

That is, the shifting finger 3 linearly moves any one of the plurality of shift lugs SL by moving the driving shaft 21 in the selecting direction, which is a direction perpendicular to the linear movement direction of the shift lugs SL. When the driving shaft 21 is rotated in the state in which the selection is made and the selection is made as described above, the shifting finger 3 is rotated and the shift operation wall of the selected shift lug SL ( 13) to push the shifting operation.

In the present embodiment, the finger gear part 19 of the shift finger 3 is formed in a flat plate shape, and the movable block 5 guides both sides of the flat finger gear part 19 to the shift finger. It comprises a guide portion 23 that receives the linear movement force of (3).

That is, when the shifting finger 3 moves linearly in the selecting direction by the drive shaft 21 due to the presence of the guide part 23, the moving block 5 moves together in a linear movement.

The rotating body (7) has an arc-shaped gear part meshed with the finger gear part (19), and the rotating force transmitting body (9) is made of a long pinion integrally connected to the rotating body (7), and the neutral The return body 11 consists of a pair of racks which are opposed to opposing circumferential sides of the long pinion.

The neutral returning body 11 is spaced apart from the shift finger 3 by a distance corresponding to the shift lug SL second away from the shift lug SL selected by the shift finger 3. It is arranged on both sides of (3).

The inside of the long pinion, which is the neutral return body 11, is penetrated by the guide shaft 25 to guide the linear movement of the neutral return body 11 and the moving block 5.

Referring to Figures 3 to 8 the operation of the present invention configured as described above is as follows.

3 is a view illustrating three states of neutral, shift, and neutral return occurring in the transmission of the dual clutch transmission according to the present invention. In the neutral state, the operation space S formed by the shift lug SL is defined. The shifting finger 3 and the moving block 5 are located at the center, and the rack, which is the neutral returning body 11, does not protrude outward from the moving block 5 and the tip is recessed inside the moving block 5. It is in a state.

In the shift state, when the shift shaft SL is assigned to the shift stage to be shifted by linearly moving the drive shaft 21, and then the drive shaft 21 is rotated, the shift finger 3 rotates to shift the shift lug. The shift is achieved by linearly moving the shift lug SL by pushing the shift operating wall 13 of SL.

At this time, the neutral returning body 11 protrudes to the outside of the moving block 5 by the pivot 7 and the pivoting force transmission 9 interlocking with the shifting finger 3, wherein the neutral returning protrudes. The stroke of the sieve 11 is set to reach the said neutral operation wall at the maximum, and is not to affect the other shift lugs SL which are in a neutral state. In the figure, since the five-stage shift lug SL is already in a neutral state, it is not affected by the neutral return body 11.

The neutral return state exemplifies a case in which the fifth shift is performed in a state where the first shift is made by the shift state. When the shift finger 3 linearly shifts the five shift lug SL, The interlocking neutral returning body 11 moves the 1 & 3 stage shift lug SL to a neutral position, thereby performing a neutral returning action.

FIG. 4 illustrates a process in which the first gear shift is performed in order. In the neutral state in which the shift finger 3 selects the 1 & 3 shift shaft SL, the drive shaft 21 is rotated to shift the shift finger 3 to the shift finger 3. Shifting is performed by linearly moving the 1 & 3 stage shift lug SL, and the driving shaft 21 is rotated again to return to the neutral state.

FIG. 5 is a diagram illustrating a situation in which a two-speed shift is performed after a first gear shift. After selecting the 4 & 2-stage shift lug SL with the shift finger 3, the shift finger 3 is rotated to rotate the 4 & 2 gear shift lug ( After shifting SL) linearly to shift in two steps, the shift finger 3 is rotated to a neutral state again.

In this case, the first gear shift stage may be a driving shift stage as the gear is still engaged, and the second gear shift stage currently engaged may be a gear shift stage in which two gears to be shifted after the first gear are pre-assembled. This is what is implemented.

FIG. 6 is a diagram illustrating a process in which a three-speed shift is performed after a two-speed shift. The shift finger 3 is moved to select the first and third shift lugs SL again, and then rotated. SL) is linearly moved toward the 3rd stage, and the previous 1st gear shift state is released by itself and shifts to 3rd stage are made.

FIG. 7 illustrates a process of shifting the gear from the fourth gear to the fifth gear, wherein the shift finger 3 selects the five-speed shift lug SL while the third gear and the fourth gear are engaged.

When the shifting finger 3 is rotated to linearly move the five-stage shift lug SL, the shift to the fifth stage is performed and the neutral return body 11 protrudes from the moving block 5. The return body 11 pushes the return operation wall 15 of the 1 & 3 step shift lug SL so that the 1 & 3 step shift lug SL returns to the neutral state.

That is, when the fifth stage is engaged, the first stage or the third stage, which is the same hole means shifting system as the fifth stage, cannot be engaged at the same time, and the active interlock function is implemented.

Of course, such a function is also implemented between the 4 & 2 stage shift lug SL and the R & 6 stage shift lug SL. Referring to FIG. 8, the active interlock function is performed and the skip shift is performed at the same time.

That is, the left side of Fig. 8 is a state in which the five-stage and six-speed stages are engaged, and it can be seen as a five-stage six-stage pre-selected state. If it is to be carried out, the shifting finger 3 is moved to the operating space S of the 4 & 2 stage shift lug SL, and then rotated, so that the 4 & 2 stage shift lug SL is linearly moved to 2 stage 2 However, the shift is made, and at the same time, the neutral returning body 11 automatically returns the R & 6 stage shift lug SL to a neutral state, and an active interlock function is implemented together with a skip shift.

On the other hand, in the case of shifting to the fourth speed from the left state of FIG. 8, as shown in the upper right side, the shift finger 4 shifts the 4 & 2-stage shift lug SL to the fourth stage and shifts to the fourth gear. The neutral return body 11 automatically returns the R & 6 stage shift lug SL to the neutral state.

1 is a view illustrating a transmission of a dual clutch transmission according to the present invention;

FIG. 2 is a view illustrating a positional relationship between a shift lug arrangement state of FIG. 1 and a shift finger and a neutral return body; FIG.

3 is a view for explaining the basic operating conditions of the transmission of the embodiment of the present invention,

4 to 8 are views illustrating the shifting operation of the embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

SL; Shift lug S; Operating space

One; Shift operation unit 3; Shifting finger

5; Moving block 7; Community

9; Motor power carrier 11; Neutral return

13; Shift control wall 15; Return operation wall

17; Finger portion 19; Finger Gear

21; Drive shaft 23; Guide part

25; Guide shaft

Claims (8)

delete A shift finger for shifting by selecting one shift lug among a plurality of shift lugs by linear motion and linearly moving the selected shift lug by a rotational motion; In the transmission of the dual clutch transmission having a shift operation unit comprising a neutral return device for positioning the shift lug in shift with the shifting finger and another shift lug belonging to the same shift system in a neutral state in association with the rotation of the finger. In The neutral return device includes a moving block configured to interlock with the linear motion of the shift finger while allowing the shift finger to rotate; A rotatable body fixedly rotatable to the moving block to rotate in conjunction with the rotational movement of the shift finger; A rotational force transmission body connected to the rotational body to extend and transmit the rotational displacement of the rotational body in the direction of the rotational axis of the rotational body; A neutral returning body provided in the moving block to convert the rotational displacement from the rotational force transmission body into a linear displacement so as to linearly move in both directions along a linear movement direction of the shift lug; Transmission of the dual clutch transmission, characterized in that configured to include. The method according to claim 2, An operating space is formed by symmetrical shapes on both sides of the shift lug in which the shift finger and the moving block are inserted in the center; The shift lug is provided with a shift operation wall forming a relatively narrow operation space in which the shift finger is accommodated, and a return operation wall connected to the shift operation wall to accommodate the shift block to form a relatively wide operation space. that Transmission of the dual clutch transmission, characterized in that. The method of claim 3, The shifting finger is comprised of a finger part inserted between the shifting operation wall and a finger gear part comprising an arc-shaped gear formed opposite to the finger part; Between the finger portion and the finger gear portion of the shift finger is connected to the drive shaft for providing a rotational motion and linear movement force to the shift finger Transmission of the dual clutch transmission, characterized in that. The method of claim 4, The finger gear portion of the shift finger is formed in a flat plate shape; The moving block is configured to include a guide portion for receiving the linear movement force of the shifting finger by guiding both sides of the flat-type finger gear portion Transmission of the dual clutch transmission, characterized in that. The method of claim 4, The pivoting body has an arc-shaped gear part engaged with the finger gear part; The rotational force transmission body is formed of a long pinion integrally connected to the rotational body; The neutral return body is composed of a pair of racks joined to opposing both circumferential sides of the long pinion Transmission of the dual clutch transmission, characterized in that. The method of claim 6, The neutral return body is disposed on both sides of the shift finger so as to be spaced apart from the shift finger by a distance corresponding to the shift lug second away from the shift finger selected by the shift finger. Transmission of the dual clutch transmission, characterized in that. The method of claim 7, The inside of the long pinion, which is the neutral return body, is penetrated by a guide shaft to guide the linear movement of the neutral return body and the moving block. Transmission of the dual clutch transmission, characterized in that.

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