KR20070005054A - Wireless transmission gear shift device of shift by wire in vehicle - Google Patents

Abstract

A shift lever mechanism of a shift-by-wire system for a vehicle is provided to move a shift lever promptly without checking the final shift range by returning the shift lever into a neutral range after shifting, and to park conveniently by binding reverse, neutral and drive ranges and additionally setting a park range. A shift lever mechanism of a shift-by-wire system includes a shift lever(1) shifting with a grip part holding by a driver, an indicator panel(3) guiding a shifting passage of the shift lever by dividing a shift range, a fixing member fastening the indicator panel and provided with plural stepped sills integrated with the shift range to generate detention in shifting, a shift feeling generating member formed in a lower part of the shift lever and moved along the stepped sills of the fixing member in operating the shift lever, and an ECU(electronic control unit, 9) operating a transmission(T) by driving an actuator(B) according to signals from a shift range position sensor(8). The ECU is switched into a manual mode in operating the shift lever from the drive range into positive or negative ranges, and a spring is mounted between a side of a lower moving part of the shift lever and a shift range forming wall.

Description

Transmission gear shift device of shift by wire in vehicle}

1 is a configuration diagram of a shift lever device for a shift-by-wire of a vehicle according to the present invention.

2 is an internal configuration diagram of a shift lever device for a shift-by-wire of a vehicle according to the present invention.

    <Description of the symbols for the main parts of the drawings>

1: shift lever 1a: grip part

1b: middle ball part 1c: lower moving part

1d: opening groove 2: shift generating member

2a: ball 2b, 7: spring

3: indicator panel 3a: shift stage guide channel

3b: shift lever installation part 4: mode selection part

4a: Parking selection button 4b: M-A selection button

5: case 5a, 6a: case body

5b: upper support end 5c, 6b: receiving hole

5d: shift stage forming stage 5e: shift stage

6: Upper bracket 8: Shifting position sensor

9: ECU

a, b, c: Shift area display

B: Actuator T: Transmission

The present invention relates to a shift-by-wire of a vehicle, and more particularly, to always return the shift lever position at which the shift stage operation is performed to a neutral position where shift is not performed, thereby compulsory recognition of the driver's forced recognition of the shift lever shift position. It relates to a shift lever device for a shift-by-wire of a vehicle to solve the problem.

In general, the shift-by-wire system electronically implements the mechanical connection / operation structure of the transmission actuator using actuators, ECUs, and sensors, and has excellent vibration and noise characteristics compared to mechanical systems. In addition, the mechanical system, which has been heavily limited in terms of package, can be implemented by shifting mechanisms such as buttons and switches.

In other words, such a shift-by-wire system shifts the position of the shift stage into an electrical signal, which is shifted from the conventional cable method, and the shift drive is controlled by the signal to achieve a desired shift. Therefore, a mechanical connection between the gear shift lever and the shift period Therefore, it is very advantageous in terms of noise and vibration (NVH) because there is no possibility that the vibration and noise generated from the transmission are transmitted directly into the cabin.

However, the shift lever used in the shift-by-wire system adopts a mechanism of detecting a position for each shift stage while applying the structure of the mechanical shift lever as it is, and the shift lever method is a shift-by-wire method. There are limitations that cannot take full advantage of the system.

For example, the H-Matic shift lever that is widely applied can be shifted manually not only through the basic shift operation of the PRND but also by +/- switching related operation in the manual mode, but only when the ND shift stage is operated. It is possible to shift without maneuvering, but it is necessary to press the push button on the shift lever side during PRND operation, but there is a limit that it is troublesome and unnatural because shifting is possible for each step.

In addition, in the H-Matic method, when shifting from a P position to another position, a lock is released by attaching an actuator or the like to perform a shift lock that requires shifting only when the brake pedal is pressed. It is inconvenient to install the mechanism, and there is no Over Drive switch or Hold switch for sudden engine brake operation, so the engine brake is operated after moving from the D position to the +/- area and it takes too long time and inconvenience. Will be.

On the other hand, in order to solve the inconvenience of the H-Matic type, a step gate type shift lever is used, which is PRND-operated by the shape of the gate acting as a guide without a push button on the shift lever's knob. Otherwise, there is no need for cumbersome push button operation.

However, even in the case of the step gate method, in order to prevent the misoperation that goes from N-> R when the D-> N operation is performed, an auxiliary safety device such as solenoid must be applied to the NR only when the brake pedal is pressed. In order to perform shift lock, which requires shifting the brake pedal when shifting from the P position to another position, the lock-release mechanism must be attached to the actuator to perform the shift lock. There is a inconvenience to be mounted.

Therefore, the present invention was invented in view of the above, and the shifting operation of the shift lever is performed based on the initial position at which the shift is not performed, and the shift lever for the operation position during operation such as a shift lock. The purpose is to provide the convenience of the shift operation by positioning the shift stage area according to the frequency of operation based on the neutral position without compulsory restraint.

The present invention for achieving the above object, the shift lever for forming a grip portion that the driver grips to perform a shift operation;

A shift stage guide channel opened so that the shift lever moves when shifting gears are shifted around the shift lever mounting portion where the shift lever is located,-/ + region, N / D region, and R with respect to the zero position, which is the center position of the shift lever. An indicator panel comprising a shift stage display section partitioned by a shift region display section comprising a / N region, a parking select button for attracting vehicle parking state, and a mode selector including a MA selection button for switching between manual mode and auto mode;

A case body having a shift stage forming step having a shift step step according to the shift step is formed on the bottom surface of the space formed by the lower part of the upper support end pivotally supporting the spherical middle ball part, which is the middle part of the shift lever, while fixing the indicator panel. The upper bracket and the case consisting of a case consisting of a case body formed of a hollow sphere shape with the receiving hole of the upper support end to be coupled to the upper support end of the case and the intermediate ball portion of the shift lever freely rotated A fixing member consisting of a spring for constraining the lower end of the shift lever with an elastic force in a space of a shift stage forming end formed at a lower portion of the shift lever;

A spherical ball inserted into the opening groove formed in the lower end moving portion integrally connected to the middle ball portion of the shift lever and moving along the shift stage jaw formed in the fixing member to generate a sense of theft, and the ball is inserted into the opening groove. A shift feeling generating member comprising a spring for generating an elastic force for pushing it;

Controlling a transmission to perform a shift by driving an actuator in response to a signal of a shift stage position sensor for detecting a shift of a shift stage generating member;

Characterized in that consisting of.

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

1 is a block diagram of a shift lever device for a shift-by-wire of a vehicle according to the present invention, the shift lever device of the present invention forms a grip part 1a that a driver grips to perform a shifting operation ( 1) and an indicator panel 3 for partitioning each shift stage region to guide the shift operation path of the shift lever 1 and the indicator panel 3 while shifting, while shifting the shift lever 1. Fixed member having a jaw having a plurality of steps corresponding to the shift stage to create a sense of time shift, shifting lever to move along the shift stage jaw formed in the fixed member in accordance with the shifting operation of the shift lever 1 (1) receives a signal from the shift sensing member (2) and the shift stage position sensor (8) that detects the shift stage movement of the shift sensing member (2) and drives the actuator (B) to transmit the gear (T). Can be shifted It consists of an ECU 9 to perform.

In addition, the indicator panel 3 is an indicator panel 3 so as to be distinguishable from a shift lever mounting portion 3b in which the shift lever 1 is positioned at one portion, and a portion opposite to the shift lever mounting portion 3b. A shift stage display section displaying each shift stage on the surface of the shift lever, and a parking select button 4a marked with P (Parking) to operate the parking brake function by operating after parking down the shift lever installation section 3b. The mode selection unit 4 and the shift lever mounting unit 3b, which are composed of a MA selection button 4b for selecting a shift mode by displaying a manual and auto display, are the same as the shift stage display unit. The shift stage guide channel 3a is opened in a substantially + shape to form a shape.

Here, the shift stage display section is divided into shift region display sections (a, b, and c) displaying respective areas according to the shift stage. That is, the engine brake operation is performed horizontally with respect to the 0 position, which is the center position of the shift lever (1). A-/ + region (b) for operating the manual mode, which is a manual operation, and an N / D region (a) and an R / N region (c), respectively, are formed vertically with respect to the zero position.

The manual mode M of the MA selection buttons 4b of the mode selection unit 4 is the ECU 9 to recognize the signal only when the shift lever 1 is operated from the D position to the +/- position. That is, even if the shift lever 1 is operated in the +/- position in the RNP state, the ECU 9 ignores the signal and does not switch to the manual mode.

In addition, the parking selection button 4a and the MA selection button 4b of the mode selection unit 4 have a conventional button structure, that is, when the button is pressed, an electric signal is generated to the ECU 9 to perform the corresponding operation. An electrical signal is input.

In this case, the MA selection button 4b of the mode selector 4 may automatically generate a MA switching signal when a shift is made to alleviate inconvenience of operation. That is, the MA selection button Delete (4b) and install Hall IC using Latch type IC on the PRND and +/- side of shift stage, and operate in manual mode (M). In this case, the ECU 9 may generate a signal for initializing the latch-type IC, that is, the MA switching signal may be automatically generated when moving to +/- in D mode. Of course.

In addition, the shift generation member (2) which gives a shift operation feeling when the shift lever (1) is operated is a spherical shape that is an intermediate portion of the shift lever (1) which is pivotally supported within the fixing member as shown in FIG. The spherical ball 2a inserted into the opening groove 1d formed in the lower end moving part 1c integrally connected to the middle ball portion 1b of the ball, and inserted into the opening groove 1d. It consists of a spring 2b which generates an elastic force to push out.

Here, the ball (2a) is rolled up the end of the lower end (1c) inward so as not to be separated even when receiving the elastic force of the spring (2b), which is a structure such as a ballpoint pen which is a common writing sphere, of course. .

And, as shown in Figure 2, while fixing the indicator panel 3, the lower portion of the upper support end (5b) for supporting the spherical middle ball portion (1b) that is the middle of the shift lever (1) A case (5) consisting of a case body (5a) having a gear stage (5d) having a gear stage (5d) having a gear shift step (5e) according to a gear shift stage with a space bottom surface formed of a shape, and an upper support end of the case (5). The case body is coupled to (5b) and the case body formed with a receiving hole (6b) forming a hollow sphere together with the receiving hole (5c) of the upper support end (5b) so that the intermediate ball (1b) of the shift lever (1) freely rotated It consists of an upper bracket (6) consisting of (6a).

Further, in the space of the shift stage forming stage 5d formed under the case 5, the neutral position after the shift lever 1 is shifted to a neutral position ("0 of shift stage display parts displayed on the surface of the indicator panel 3 in FIG. 1"). Spring 7 which restrains the lower end moving part 1c of the shift lever 1 with elastic force so as to always return to the "position &quot; is formed on both sides of the lower end moving part 1c and the shifting end forming end 5d, respectively. It is provided between the walls respectively.

In addition, the sensor 8 for detecting the position of the shift stage operated through the shift lever 1 is generally shifted to the shift step 5e in accordance with the shift stage formed in the shift stage forming end 5d of the case 5. It is provided to detect the movement position of the speed change member (2) according to the movement of the shift lever (1), it is preferable to use a non-contact sensor of the Hall-Magnet type, and also the ultrasonic sensor or Of course, contact sensors can be used.

In addition, the installation position of the sensor 8 is not limited to the shift step 5e, but may be installed at a position capable of detecting a shift operation position of the shift lever 1.

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

The present invention does not maintain the shift lever position (for example, the lever is kept at the R position in the case of P-> R, and the lever is kept at the D position in the case of R-> D) after the shift operation. In case of shifting operation, when the ECU detects a signal generated after the operation to the gear shifting stage, the shift lever returns to the initial state, that is, it is maintained at the default position 0, which is a neutral area where the driver does not operate the shift lever. Will be.

That is, the shift lever device of the present application is-/ + region (b) or N / D region (a) and R / N region at the initial position 0 as the center position of the shift lever 1 as shown in FIG. If the shifting operation is performed in (c), for example, when shifting to D, the driver grasps the grip portion 1a of the shift lever 1 and moves from 0 to N to D. Lower moving part 1c via the intermediate ball part 1b of the shift lever 1, which is freely rotated in the moving direction, in the receiving holes 5c and 6b formed in the upper support end 5b and the upper bracket 6. The shift feeling generating member 2 provided in the is moved along the shift step jaw 5e of the shift step forming end 5d.

At this time, the grip part 1 of the shift lever 1 is moved from the 0 position b to the ND position a along the shift stage guide channel 3a of the indicator panel 3 as shown in FIG. 2. The intermediate ball portion 1b of the shift lever 1 moves in the receiving holes 5c and 6b formed in the upper support end 5b and the upper bracket 6 of the case 5, and the shift lever 1 The lower end moving part 1c of) is moved along the shift step 5e in the shift step forming end 5d of the case 5.

In addition, as the lower end moving part 1c of the shift lever 1 moves, the springs 7 fixed to both sides are compressed or tensioned, that is, compression is generated toward the moving direction of the lower end moving part 1c. Tension occurs in the opposite direction, which of course acts as a zero position return force of the shift lever 1.

As described above, when the shift generation member 2 moves along the shift step 5e of the shift step forming step 5d, the shift step position sensor 8 is provided at the position of the shift step 5e, respectively. The magnet sensor detects the positional shift of the shift generating member 2 and transmits a signal to the ECU 9.

In this case, as shown in FIG. 2, when the shift generating member 2 moves from 0-> N to D along the shift step 5e, the ball 2a of the shift generating member 2 shifts. Of course, the shift is generated by shifting the stepped jaw 5e, so that the driver may feel that the shift operation is performed through the shift lever 1.

Subsequently, the ECU 9 receiving the signal of the shift stage position sensor 8 drives the actuator B to perform the shift corresponding to the D shift stage in the transmission T.

At this time, the shift lever 1 is located at D, and after the ECU 9 controls accordingly, the driver returns to the zero position at the same time as the hand opens, which is a lower end moving part of the shift lever 1. As the spring 7 provided in (1c) is restored to the initial state so as to be compressed after the tension and the tension after the compression, respectively, the lower lever 1c is moved to the initial position to shift the shift lever 1 to the 0 position. To be returned.

Since the shift lever 1 is operated in the same manner as when the N-D position (a) is moved from the 0 position (b) to the N-R position (c) at the zero position (b), detailed description thereof will be omitted. .

In addition, in the present invention, the manual mode control of the transmission T is performed only when the state of the transmission T is in the D position, which receives the shift stage position of the shift lever 1 through the sensor 8. The ECU 9 ignores the shift lever 1 even if it detects a signal moving to +/- in the R-N-P position, and only the signal moving to +/- in the D position is in manual mode (M). This is because the control to switch to.

On the other hand, when the vehicle is parked, the shift lever 1 is operated to move the vehicle to the parking state, and when the parking selection button 4a provided on the indicator panel 3 is pressed, the parking selection button 4a is pressed. ECU 9, which senses a signal of, keeps the vehicle in a parking state.

As such, the convenience of parking is not generally used while the shift stage arrangement of the present application does not have all PRNDs on the shift sequence, and sets the RND stages that are often used when the driver operates parking. Of course, P is a structure set by a separate switch.

In addition, even when the vehicle is operated in the auto mode (A) in the manual mode (M), the driver presses the MA selection button (4b) provided on the indicator panel (3), the ECU (9) that detects this is auto The transmission T is controlled according to the mode.

In order to avoid the hassle caused by the driver's operation of the M-A selection button 4b, the MA selection button 4b is deleted and a latch IC is applied to the PRND and +/- sides of the shift stage. It is also possible to install a Hall IC so that the ECU (9) detects the positional shift of the shifting lever (1) so that the MA switching signal is automatically generated when moving from D mode to +/-.

In addition, even when the engine brake is operated, the engine brake can be operated according to the simple shifting of the shift lever 1. This is because the shift lever 1 is always in the 0 position even when driving at D, so that the shift lever 1 is not moved. There is a convenience of operating the engine brake in the ECU 9 by using the signal of the sensor 8 to sense as it moves to the 0->-position.

In addition, even when the shift lock is operated in the present application, it can be achieved by adding logic only to the ECU 9 without the addition of a device such as a separate solenoid for the shift lock 1. This is because the shift lever 1 does not have to be forcibly restrained by the solenoid according to the characteristic of returning to the zero position after shifting without shifting along the shift stage.

That is, when the vehicle is parked and the transmission position is the P position, even if the driver does not restrain the shift lever 1 by using the solenoid to force P-> R when the driver R does not press the brake pedal, Since the lever 1 has already returned to the 0 position, it is a matter of course that only the motor on the transmission T side is controlled to maintain the P position.

As described above, according to the present invention, the shift lever moves to a position corresponding to the shift stage and shifts back to the basic position 0, which is a neutral area in which shifting is not performed again, without confirming the final shift stage. There is a convenience to move the shift lever immediately to the shift stage to be operated.

In addition, the present invention has an effect of improving convenience in parking by setting the shift stage arrangement of R-N-D stages, which are frequently used when the driver operates the parking lot, as a separate switch.

In addition, the present invention installs a Hall IC using a latch type IC on the PRND and +/- side of the shift stage, and when the ECU detects the shift of the shift lever and moves from D mode to +/-, As a result, the auto mode (A) switching signal can be generated in the manual mode (M), thereby avoiding the inconvenience of the driver's M-A operation.

In addition, according to the present invention, since the shift lever is always in the 0 position even when the engine brake is operated, it is a matter of convenience that the engine brake is simply operated by moving the shift lever to the 0->-position.

In addition, since the present invention has already returned to the 0 position after the shift lever operation, only the motor of the transmission side needs to be controlled to maintain the shift lever in the P position, so even when the shift lock is operated. Of course, using a separate device such as the solenoid of the P-> R does not have to be forced to restrain the effect of course.

Claims (7)

A shift lever 1 which forms a grip part 1a which the driver grasps and performs a shift operation; A shift stage guide channel 3a opened so that the shift lever 1 moves during a shift operation centering on the shift lever mounting portion 3b where the shift lever 1 is positioned; and a center position of the shift lever 1 A shift stage display section partitioned by a shift zone display section (a, b, c) consisting of-/ + zone (b), N / D zone (a), and R / N zone (c) with respect to the zero position of An indicator panel (3) comprising a mode selection unit (4) provided with a parking selection button (4a) for attracting a state and a MA selection button (4b) for switching the manual mode (M) and the auto mode (A); While fixing the indicator panel (3) is a step of the space according to the bottom of the space formed by the lower portion of the upper support end (5b) pivotally supporting the spherical middle ball portion (1b) of the middle of the shift lever (1) The case 5 is formed of a case body 5a having a speed change step forming end 5d having a speed change step 5e, and an upper support end 5b of the case 5, An upper bracket 6 made of a case body 6a having a receiving hole 6b having a hollow sphere shape together with a receiving hole 5c of the upper support end 5b so that the intermediate ball part 1b freely rotates, and the A fixing member composed of a spring 7 for restraining the lower end moving part 1c of the shift lever 1 with an elastic force in the space of the shift stage forming end 5d formed at the bottom of the case 5; Spherical shape is inserted into the opening groove (1d) formed in the lower end moving portion (1c) integrally connected to the intermediate ball portion (1b) of the shift lever (1) to move along the shift stage jaw formed in the fixing member to generate a sense of theft A shift sensing member (2) comprising a ball (2a) and a spring (2b) inserted into the opening groove (1d) to generate an elastic force for pushing the ball (2a); An ECU (9) for controlling a transmission (T) to perform a shift by driving an actuator (B) in response to a signal of a shift stage position sensor (8) for detecting a shift in a shift stage generating member (2); Shift lever device for a shift-by-wire of the vehicle made of. The shift lever device according to claim 1, characterized in that the ECU (9) switches the manual mode only when the shift lever (1) is operated from the D position to the +/- position. The shift-by-wire for a vehicle according to claim 1, wherein the spring (7) is provided between both side surfaces of the lower end moving part (1c) of the shift lever (1) and the shift stage forming end (5d) wall, respectively. Shift lever device. The shift stage position sensor (8) according to claim 1, wherein the shift stage position sensor (8) is provided at a shift step jaw (5e) in accordance with the shift stage formed in the shift stage forming end (5d) of the case (5) according to the movement of the shift lever (1). A shift lever device for a shift-by-wire of a vehicle, characterized by detecting a shift position of a shift sensing member (2) and transmitting a signal to the ECU (9). 5. The shift lever device according to claim 4, characterized in that the shift stage position sensor (8) is a non-contact sensor of a Hall-Magnet type. The MA switching signal performed by the ECU 9 is initialized when the signal of the shift stage position sensor 8 provided on the PRND and +/- sides of the shift stage is moved toward +/− in the D mode. A shift lever device for a shift-by-wire of a vehicle, characterized in that it does not need to be operated to operate the MA selection button 4b. 7. The shift lever device for a shift-by-wire of a vehicle according to claim 6, wherein said shift stage position sensor (8) is a hall IC using a latch type IC.

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