KR100285439B1 - Transmission for vehicle - Google Patents

Abstract

PURPOSE: A transmission of a vehicle is provided to drive safely by actuating a clutch and shift units with hydraulic pressure, and to improve convenience by operating the manual transmission automatically. CONSTITUTION: A transmission for a vehicle is composed of a servo valve(76) regulating flow by a microprocessor(96); first and second common passages connected to first and second ports; first and second passages branched from common passages; solenoid valves(82,84,86) installed in first and second passages to open and close passages by the microprocessor; a clutch actuator connected to first and second passages to connect and disconnect the clutch; a selector actuator moving a selector lever circumferentially; and a shift actuator connected to first and second passages to turn a shift lever circumferentially. Convenience is improved with operating the manual transmission automatically with simple structure.

Description

Transmission of the car

1 is a partial perspective view of a transmission mechanism according to the present invention.

2 is a view for explaining the structure of a rotary actuator according to the present invention.

3 is a partial perspective view of a clutch operating mechanism according to the present invention.

4 is a side cross-sectional view of the head of the shift lever in accordance with the present invention.

5 is a perspective view of a manifold according to the present invention.

6 is a hydraulic circuit diagram according to the present invention.

7 is a cross-sectional view taken along the line A-A, line B-B and line C-C of FIG.

8 is a side cross-sectional view of a solenoid valve unit according to the present invention.

9 is a block diagram related to the present invention.

10 is a servovalve control circuit diagram according to the present invention.

11 is an operational flowchart related to the present invention.

12 is a flowchart illustrating the operation of the ″ D ″ step in FIG.

13 is a flowchart illustrating the operation of the ″ E ″ step in FIG.

14 is a flowchart illustrating the operation of the step ″ I ″ in FIG.

FIG. 15 is an operation flowchart of the ″ B ″ step in FIG.

[Field of Invention]

The present invention relates to a transmission of an automobile, and more particularly, to a transmission that can increase the convenience of driving by allowing the manual transmission to automatically shift.

[Private Technology]

The manual transmission of the vehicle has clutch means for transmitting or interrupting the power of the engine to the input shaft of the transmission.

This clutch means shuts off the power of the engine by the driver during shifting, which usually consists of hydraulic generation of the clutch master cylinder.

The shift is composed of a select operation of moving the shift lever left and right and a shift operation of moving back and forth.

Since the above-described clutch operation and shift operation are performed by the driver, these operations may not be appropriate, and such operation is a factor that adds fatigue to the driver.

In addition, the shifting mechanism is a factor that complicates the engine compartment because links or rods for shift and selector are connected to the shift lever.

[Summary of invention]

The present invention has been invented to solve the problems of the prior art as described above, and an object of the present invention is to provide a transmission of a motor vehicle capable of automatically shifting a general manual transmission.

In order to achieve the above object, the present invention provides a servovalve controlled by a microprocessor to control a flow rate, a first and a second common passage communicating with the first and second ports of the servovalve respectively, and the common passage. It has three pairs of first and second passages, each branched, and are provided in these first and second passages and connected to the first and second passages, respectively, and a solenoid valve for opening and closing these passages by on / off control of the microprocessor. Clutch actuating actuator for intermittent / connecting the clutch through the actuator, Select actuator for circumferentially moving the selector lever in communication with the other first and second passages, and Shift lever for circumferential communication with the other first and second passages. A transmission apparatus for a vehicle including a shift actuator for rotating in a direction is provided.

The shift actuator and the selector actuator described above include a casing, a rotary piston rotatably installed in the casing, and a potentiator installed on the rotary piston to sense the amount of rotation and output the signal as a voltage. It provides a transmission of a vehicle comprising a meter.

The clutch actuating actuator is characterized in that the linear actuator is linearly movable.

The clutch operating actuator is characterized in that the clutch operation is possible automatically / manually by the potentiometer installed on the shift lever.

The first and second common passages and the first and second passages are formed in one manifold body.

The clutch actuating actuator is characterized in that it has a potentiometer.

The above-described shift and selector actuator is characterized in that it has a potentiometer connected to the input stage by a microprocessor.

[Preferred Embodiments of the Invention]

FIG. 1 is a partial perspective view of the transmission mechanism according to the present invention, and shows the 1,2 speed shift rail 2, 3 and 4 speed shift rails 4, and 5 speed and reverse shift rails 6. As shown in FIG.

Although not shown in these rails, a shift fork is provided to allow for synchronizing.

The shift rails have shift lugs 8, 10 and 12, respectively, and an arm 14 for selecting these shift lugs is provided in the shift 16. As shown in FIG.

The shift 16 is provided with a shift actuator 18 for moving the shift in the rotational direction, and a selector actuator 20 is provided at the center of the select lever rotation to move the shift in the longitudinal direction. .

As shown in FIG. 2, the shift actuator 18 includes a casing 22, a shaft 24 rotatably installed inside the casing 22, and a rotary piston 26 coupled to the shaft. It is made to include.

The rotary piston 26 has a structure that can rotate left and right in the chamber 28 provided in the casing 22, the casing 22 has a chamber 28 for rotating the rotary piston 26 The first port 30 and the second port 32 for supplying hydraulic pressure are provided therein.

The casing 22 may be formed by the cover body, which is divided substantially, by a fastening means such as a bolt, etc., and a potentiometer (potentio) capable of detecting the amount of rotation of the rotary piston 26 inside the cover body. The meter 34 is installed to transmit a detection signal to the microprocessor as described below.

The selector actuator 20 has the same structure as the shift actuator. The selector actuator 20 is installed on the selector lever in order to change its function, and since only the position and the direction are different, the reference number of the potentiometer of the actuator is set to 35. The reference number of one port is 31 and the reference number of the second port is 33.

3 is a view showing an embodiment of the clutch control means according to the present invention, which is projected to the rear of the clutch cover 36, and is connected to the bearing and the release bearing 38 coupled to the spline and the input shaft of the transmission. The release fork 40 and the clutch actuator 42 provided in the terminal part of this fork are comprised.

The clutch actuator as a linear actuator has a potentiometer 44 for detecting the movement amount of the linear actuator, and has a first port 43 and a second port 45 to supply hydraulic pressure for linear movement. have.

4 is a side cross-sectional view of the gripper of the shift lever in accordance with the present invention. The head 48 is formed integrally with the shift lever 46, and the movable electrode member slidably provided inside the head. 50) and a variable resistance member 52 fixed inside the head.

The movable electrode member 50 and the variable resistance member 52 are connected to the input terminal of the microprocessor illustrated in FIG. 8 to form a potentiometer 54 substantially.

The movable electrode member 50 is fixed to the push button 58 provided with the elastic member 56 is configured to move together when the button is pressed.

This pushbutton 58 has a stopper 60 to prevent excessive depression.

5 and 6 show the hydraulic pressure supply means for operating the shift actuator, the selector actuator and the clutch actuator described above, wherein the manifold body 62 has hydraulic pressure through the first and second ports of the shift actuator 18. It has a first passage 64 and a second passage 66 for supplying the pressure, and also the first passage 68 and the second passage for supplying hydraulic pressure to the first port and the second port of the selector actuator 20 The passageway 70 is provided.

And a first passage 72 and a second passage 74 for supplying hydraulic pressure to the clutch actuator 42. The first passages 64, 68, 72 and the second passages 66, The 70 and 74 are connected to the servo valve 76 to communicate with the first common passage 78 and the second common passage 80 which are selectively supplied with hydraulic pressure. (See Figure 6)

Servo valve 76 provided in the present invention is a general valve for controlling the flow rate by the electric input signal, the present invention does not provide such a servo valve, all kinds of servo valves can be used, so the detailed description is omitted. do.

7 (a), (b), and (c) are cross-sectional views taken along line AA and line BB of FIG. 5, wherein the first common passage 78 is formed at a different height from the second common passage 80. The two passages are provided with solenoid valves 82, 84, 86 for selectively opening and closing these passages as shown in FIG.

The solenoid valves described above have the same structure, each having a valve spool having a first land 88 and a second land 90 for blocking the first passage and the second passage.

The valve spool is movably installed in the groove 92 formed in the manifold 62. The groove is formed larger than the length of the valve spool for the first and second lands to move.

Therefore, when the valve spool moves to open the first and second passages, the fluid is supplied to the area A of the groove 92 so that when the valve spool returns to its original position, the fluid supplied to the area A is moved to the B region. Bypass passage 94 is provided in the manifold.

9 is a block diagram related to the present invention, wherein a brake on / off switch 98 for detecting a braking state is connected to an input terminal of the microprocessor 96, and whether the shift is to be made automatically or manually. An automatic / manual switching switch 100 for selecting is connected to be able to input these signals.

In addition, the shift lever position detection sensor 102 for detecting the position of the shift lever is connected to determine which shift stage the shift lever is located.

And the tachometer 104 for detecting the rotational speed of the engine, and the vehicle speed sensor unit 106 for detecting the vehicle speed through the microprocessor (F / V converter 108, 110) for converting the voltage to the frequency, respectively ( It is connected to the input terminal of the 96, and the accelerator pedal position detection sensor 112 for detecting the stepping of the accelerator pedal is connected to the input terminal.

The potentiometers 34, 35, and 44 of the shift actuator, the selector actuator, and the clutch actuators are connected to the input terminal of the microprocessor through the A / D converter 114.

A warning unit 116 is connected to the output end of the microprocessor when the shift lever is in a non-startable position, and an armature (not shown) of the servo valve 76 is connected through the amplifier 118. It can be operated by the signal output from the microprocessor.

The amplifier 118 forms a connection capable of receiving a signal from a potentiometer 54 for selecting whether to operate the clutch automatically or manually, and the solenoid valve 82 for clutch operation. The solenoid valve 84 for shift and the solenoid valve 84 for selector are connected, and these can be controlled.

10 is a control circuit diagram of the servo valve 76 according to the present invention. In the automatic clutch control unit A, a positive terminal is connected to the D / A converter C, and a potentiometer of the clutch actuator ( A negative terminal is connected to 44 and a comparator is connected to an output terminal of the amplifier 118.

The clutch control unit B in manual operation is connected to the output terminal of the microprocessor 96 and the clutch control unit A in the automatic state, and the output terminal is connected to the relay RY1 and the comparator Q1. (+) Terminal is connected to the non-inverting terminal of, and the comparator (B1) is connected to the negative terminal of the potentiometer (44) of the clutch actuator.

The relay RY1 has a coil L11 having one terminal connected to the microprocessor 96 and the other terminal grounded, and one terminal connected to an output terminal of the clutch control unit A when automatic. It consists of a switch (S11) is connected to the other terminal to the output terminal of the comparison unit (B1).

The clutch operation solenoid valve portion 82 includes a relay RY2 connected to the microprocessor 96 and a clutch operation solenoid valve 821 connected to the relay RY2.

The relay RY2 has a coil L21 having one terminal connected to the microprocessor 96 and the other terminal grounded, and one terminal connected to the reference voltage V _ACT , and the other terminal for clutch operation. The switch S21 is connected to the solenoid valve 821.

The shift operation solenoid valve portion 84 includes a relay RY3 connected to the microprocessor 96, and a clutch operation solenoid valve 841 connected to the relay RY3.

The relay RY3 has a coil L31 having one terminal connected to the microprocessor 96 and the other terminal grounded, and one terminal connected to the reference voltage V _ACT and the other terminal being used for the shift operation. The switch S31 is connected to the solenoid valve 841.

The select operation solenoid valve unit 86 includes a relay RY4 connected to the microprocessor 96, and a select operation solenoid valve 861 connected to the relay RY4.

The relay RY4 is a coil L41 having one terminal connected to the microprocessor 95 and the other terminal grounded, and one terminal connected to the reference voltage V _ACT and the other terminal being a solenoid for select operation. The switch S41 is connected to the valve 861.

The operation of the present invention made as described above is as follows.

[Manual]

First, when the driver presses the pushbutton 58 installed on the shift lever 46, the potentiometer 54 changes the resistance value while the movable electrode member 50 contacts the variable resistance member 52. Will output the value.

Therefore, according to the variable resistance value of the clutch manual selection switch 54, the corresponding voltage is output and applied to the non-inverting terminal of the comparator Q1.

Accordingly, when the voltage applied to the non-inverting terminal is larger than the voltage applied to the inverting terminal connected to the reference voltage V _ref , the voltage of the comparator Q1 is greater than that of the comparator Q1. A high level ″ H ″ signal is output to the output terminal.

However, when the voltage applied to the non-inverting terminal is smaller than the reference voltage V _ref , the signal output to the output terminal of the comparator Q1 becomes the low level ″ L ″ signal.

Therefore, when the driver operates the pushbutton 58 more than the set position in order to perform the clutch operation manually, a high level ″ H ″ signal is output from the comparator Q1 and applied to the microprocessor 96, so that the microprocessor ( 96 may determine the operation state of the clutch device.

Thus, when the output of the comparator Q1 is ″ H ″, which is a high level, the microprocessor 96 may operate the clutch operation solenoid valve portion 82 and the clutch control portion B during manual operation to manually perform the clutch operation. Outputs a control signal to operate.

Therefore, a current flows through the coil L21 of the relay RY2 of the clutch operation solenoid valve unit 82 and the coil L11 of the clutch control unit B when the relay RY1 and RY2 operate.

As the relays RY1 and RY2 operate, the switches S11 and S21 of the relays RY1 and RY2 that are in an off state when not in operation are all changed to an on state, thereby operating the clutch device for operating the clutch device. Solenoid valve 821 is operated.

And a signal output from the clutch manual selection switches 54 and 44, that is, a variable resistance value that varies depending on the operating state of the clutch manual selection switch 54 to the driver, and a variable that actually varies depending on the operation degree of the clutch device. The voltage values output according to the resistance values are compared with each other in the comparison unit B1, and a voltage corresponding to the difference between the two input voltages is output to the output terminal of the comparison unit B1 until the two values are the same.

Therefore, the signal amplified via 118 through the switch S11 of the relay RY1 is applied to the servovalve 76.

Therefore, the clutch device can be operated as much as the driver drives the clutch manual selection switch 54 by the operation of the servovalve 76.

Therefore, when the driver operates the push button 58 as described above, the clutch operation is controlled according to the operation of the comparator B1 of the clutch control unit B during the manual operation.

[Automatic]

However, when the low level ″ L ″ signal is applied to the microprocessor 96 as the output terminal of the comparator Q1 is not pressed by the pushbutton 58, the microprocessor 96 automatically operates to control the clutch operation. Judging by.

Therefore, the microprocessor 96 outputs a control signal for operating the relay RY2 of the clutch operation solenoid valve portion 82 to operate the clutch operation solenoid valve 821 to enable the clutch operation.

In addition, the microprocessor 96 generates a voltage output from the D / A converter C, that is, a signal that has already set the degree of operation of the clutch device and an operation of the actual clutch device so that the clutch device can be operated by the set value. The variable resistance value is varied according to the degree and the corresponding voltage applied from the potentiometer 44 of the clutch actuator is compared at the time of automatic clutch control unit A. FIG.

Therefore, when the clutch device is operated as much as the predetermined operation degree, that is, the signal corresponding to the voltage difference is automatically applied until the voltage applied from the D / A converter C is equal to the voltage applied from the 44. It is output from the control part A, and operates the servo valve 76.

Therefore, the operation state of the clutch device is changed by the operation of the servovalve 76, and the clutch device is operated as much as already set.

In the above manner, the shift solenoid valve portion 84 and the selector valve portion 86 also operate.

The operation of the clutch device is substantially realized by the operation of the servo valve 76. When the servo valve 76 is operated in this way, as shown in FIG. 6, the port a and the port b communicate with each other. And port d communicate with each other, so that hydraulic pressure flows through the first common passage 78 to be divided into the respective first passages 72, 64, and 68, and the clutch actuating actuator 42, the select actuator 18, and the shift, respectively. It flows into the first ports 43, 30, 31 of the actuator 20.

As a result, these actuators are operated. First, when the actuator 42 for clutch operation is operated, the release fork 40 interlocks and interlocks the clutch as shown in FIG.

Then, as the select actuator 18 operates, as shown in FIG. 1, the shift 16 is pulled in the longitudinal direction to move the arm 14 so that the lug of any one of the shift lugs 8, 10, and 12 is moved. It will be in the opposite position.

Since the arm lever 14 is rotated by operating the shift actuator 20 in this state, the arm 14 pushes the shift lug to shift.

The above-described shifting process will be described through the operation flowcharts of FIGS. 11 and 12.

First, in step S1, it is determined whether the shift lever 46 is in the neutral position, and if it is not neutral, the microprocessor 96 outputs an electrical signal to the warning unit 116 to inform the driver.

If neutral, the ignition preparation is performed in step S2, and it is determined whether the engine is driven in step S3.

In this case, if the engine is not driven, the process returns to step S1. If the engine is driven, it is determined whether the position of the shift lever 46 has been changed in step S4. The automatic / manual switching switch 100 of FIG.

At this time, if it is selected manually, it returns to step S4, and if it is selected automatically, all operations are executed automatically.

The signal returned to step S4 again checks the position of the shift lever 46, and if the position change is made, goes through the operation of "D".

The operation of the above-mentioned ″ D ″ is described as an operation flowchart shown in FIG.

That is, the step S1-1 of turning on the solenoid valve 821 of the solenoid valve part 82 for clutch operation, the step S1-2 of operating the clutch actuator 42 very fast, and the step of controlling the clutch S1- 3, and completes the step S1-4, and if it is not completed, the process returns to the previous step S1-3, and if completed, the process returns to the step S1-5 of turning off the solenoid valve 821.

When the operation of the clutch is completed in FIG. 11, the operation of " E "

The operation of ″ E ″ is performed by turning on the solenoid valve 84 of the shift solenoid valve portion 84, as shown in FIG. 13, and moving the arm from the neutral position to the left side. S2-2 and the moving step S2-3.

At this time, if no movement is made, the process returns to step S2-2. If the movement is completed, the process returns to step S2-4 of turning off the solenoid valve 841.

And the operation of "I" proceeds according to the operation flowchart as shown in FIG.

That is, the movement is completed in step S3-1 of turning on the solenoid valve 861 of the selector solenoid valve portion 86, moving the selector lever forward from the neutral position S3-2, and moving step S3-3. If not, the process returns to step S3-2 and if the movement is completed, the process returns to step S3-4 which turns off the solenoid valve 861.

When this operation is completed, the process proceeds to step S6 in FIG. 11, in which the clutch is selected manually.

This selection is determined by the presence or absence of the signal of the potentiometer 54 which generates a signal by pressing the pushbutton installed at the head of the shift lever 46 in FIG. do.

In the ″ B ″ operation described above, as shown in FIG. 15, step S4-1 for turning on the solenoid valve 821 for clutch operation, step S4-2 for slowing the operation speed of the clutch, and connecting the clutch After step S4-3 and completion step S4-4, if it is not clutched, return to step S4-3 again, and when clutching is completed, turn off solenoid valve 821 to return through step S4-5. do.

Then, if it is manual in step S6, the step S7 of turning on the solenoid valve 821 of the solenoid valve unit 82 for clutch operation goes through the step of completion of movement S8 and step S9 of turning off the solenoid valve 821 to allow manual shift to proceed. do.

In addition, in FIG. 11, in step S5, if the position of the shift lever is not the 1st speed, the process proceeds to step S10. At this time, if the position of the 2nd speed is operated, the clutch is operated to prepare for the next shift, and if it is not the 2nd speed, it is the reverse position. In the judging step S11, it is determined whether or not the reverse position is carried out, and if it is the reverse position, shift prevention is performed, and if it is not the reverse position, step S12 determines whether it is the third speed position; step S13 for judging whether it is the fourth speed position; The signal is sent to the warning unit 116 through the step S14.

These signals return to step S5 to resume the shift.

As described above, the transmission device according to the present invention is configured to operate the clutch and the transmission mechanism using the hydraulic pressure as the operating source, thereby increasing the convenience of operation and allowing the manual transmission mechanism to be operated automatically. This eliminates the need for a clutch pedal and eliminates the need to use a link mechanism that connects the shift lever and the selector rail, thereby providing a simple shift mechanism mechanically.

Claims (7)

A servo valve controlled by a microprocessor to control the flow rate, first and second common passages communicating with the first and second ports of the servovalve, respectively, and three pairs of first and second passages branched from these common passages, respectively. And a solenoid valve installed in these first and second passages to open and close these passages by on / off control of the microprocessor, and a clutch actuating actuator for intermittent / connecting the clutch in communication with the first and second passages described above. And a select actuator for moving the selector lever in the circumferential direction in communication with the other first and second passages, and a shift actuator for moving the shift lever in the circumferential direction in communication with the other first and second passages. Transmission. 2. The shift actuator and the selector actuator according to claim 1, wherein the shift actuator and the selector actuator are provided with a casing, a rotary piston rotatably installed in the casing, and rotated by hydraulic pressure, and installed on the rotary piston to sense the amount of rotation and convert the signal into a voltage. A vehicle transmission comprising a potentiometer to output. 2. The vehicle transmission apparatus according to claim 1, wherein the clutch actuator is a linear actuator capable of linear movement. The transmission of claim 1, wherein the clutch actuator is capable of clutch operation automatically or manually by means of a potentiometer installed on the shift lever. The transmission of claim 1, wherein the first and second common passages and the first and second passages are formed in one manifold body. The transmission of claim 1, wherein the actuator for clutch operation has a potentiometer. The transmission of claim 1, wherein the actuator for shift and selector has a potentiometer connected to an input end by a microprocessor.