KR100281816B1 - Clutch actuation device of semiautomatic variable speed car - Google Patents

Abstract

The present invention provides a semi-automatic transmission vehicle in which the clutch is automatically connected / detached by the control signal of the microcomputer together with the clutch pedal operated by the driver.

DC motor rotates forward / reversely in response to the signal of the microcomputer, a disk rotated by being connected to the shaft of the DC motor, and is installed to allow linear movement on the upper side of the disk and has a long guide groove formed on the bottom thereof. And a cam-type tappet which is installed to be rotatable on one side of the upper surface of the disc so as to be inherent in the guide groove of the movable block, and moves along the guide groove of the movable block as the disc rotates, linearly moving the movable block. A pair of support blocks installed at a predetermined interval on the base, which is the front and rear direction of the block, a piston rod fixed to the moving block and linearly moved along the moving block through the support block, and on the one support block. Master installed to pressurize the hydraulic oil to connect / space the clutch as the end of the piston rod is installed and linearly moved Characterized by consisting of a cylinder, thereby providing a clutch operation device of a semi-automatic transmission cars that can be manually and automatically operate the clutch, as well as improve the stability and accuracy of the clutch operation.

Description

Clutch actuation device of semiautomatic variable speed car

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a semiautomatic transmission vehicle capable of automatically operating a clutch without directly operating a clutch pedal. In particular, the present invention relates to a system for automatically connecting / separating a clutch while a motor rotates according to a signal of a microcomputer. A clutch operating device of a semi-automatic variable speed vehicle.

In general, a vehicle equipped with a manual transmission is equipped with a clutch pedal along with an accelerator pedal and a brake pedal. When a driver shifts the vehicle speed or stops the vehicle, the clutch pedal is spaced apart to depress the power of the engine. It is possible to block.

However, such a manual transmission car is not only cumbersome for the driver's driving operation since the driver must press the clutch pedal whenever the driver shifts or stops the gear, and the driver's fatigue is considerably increased when driving for a long time in such a state. It becomes bigger.

On the other hand, a vehicle equipped with an automatic transmission has a merit that it is possible to shift the vehicle speed without using the clutch pedal and stop the vehicle since the clutch pedal is not installed. Compared with the high installation cost and high fuel cost, there is an disadvantage in terms of economics.

Due to the advantages and disadvantages of the manual transmission and the automatic transmission as described above, the use of the manual transmission as it is to reduce the transmission cost and fuel cost, while the spread of the semi-automatic transmission that does not have to step on the clutch pedal like the automatic transmission one by one.

Accordingly, the present applicant also disclosed a utility model registration number 89133, 97290, 99113, 96040, 103752 including a domestic patent 37331, a clutch operating device of a semi-automatic variable speed vehicle using a vacuum powering device using the intake negative pressure of the engine as a power source. There is a bar.

In addition, a clutch operating device of a semi-automatic variable speed vehicle that connects / separates the clutch by operating the hydraulic oil in the master cylinder by converting the rotational force of the D.C motor into a linear motion through a screw motion has already been developed and commercialized.

However, as described above, the clutch operation device of various types of semi-automatic transmission vehicles has been widely spread, but there is a demand for a device for improving stability while performing clutch operation more quickly. In addition, the development of a device that is durable without damage to the clutch operating element even after long use, in particular, the development of a device that improves the precision and accuracy of the clutch control operation has emerged as a major challenge.

Therefore, the present invention has been made to solve the above problems, by switching the rotational force of the DC motor into a linear motion using a cam mechanism can be operated manually and automatically the clutch as well as the stability and precision of the clutch operation It is to provide a clutch operating device of a semi-automatic variable speed vehicle to be improved.

The clutch operating device of the semi-automatic variable speed vehicle of the present invention for realizing the above object is a semi-automatic variable speed vehicle in which a driver can connect / separate the clutch by a control signal of a microcomputer together with a clutch pedal operated directly. A plate-shaped base fixed at a predetermined position of the base, a DC motor installed at a lower side of the base and forward / reversely rotated according to the signal of the microcomputer, and installed at an upper side of the base and connected to a shaft of the DC motor to rotate. The disk, and the movable block is installed so as to move linearly on the upper side of the disk and the bottom is formed with a long guide groove, and the rotatable rotatably installed on one side of the upper surface of the disk to be inherent in the guide groove of the movable block. Cam-type tappet for moving the moving block linearly while moving along the guide groove of the moving block as the rotation, A pair of support blocks installed at a predetermined interval on the base, which is the front and rear direction of the moving block, a piston rod fixed to the moving block and linearly moved along the moving block through the support block, and the one side support It is characterized in that the master cylinder is installed in the block and pressurized the pressure oil to connect / space the clutch as the end of the piston rod is inherently linear movement.

1 is an overall schematic view including a clutch operating device according to the present invention,

Figure 2 is a perspective view of the main part of the clutch operating device of the semi-automatic variable speed vehicle according to the present invention,

3 is a cross-sectional view of the main part of the device according to the invention,

4 is a view showing an operating state of the cam mechanism according to the present invention,

4A is a state diagram at the time of advancement (clutch separation),

4B is a state diagram at the time of reverse movement (clutch connection).

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

10 Clutch 11 Clutch Pedal 12 First Master Cylinder

13: 1st hydraulic passage 14: 2nd hydraulic passage 15: release cylinder

20: second master cylinder 30: clutch automatic operation mechanism 31: base

32: D.C motor 33: Disc 34: Cam type tappet

35: moving block 35a: guide groove 36: piston rod

36a: Rod 36b: Piston 37: Support Block

38: movement amount detecting means 38a: rack 38b: pinion

38c: position sensor 39: spring 40: microcomputer

42: power switch 43: clutch pedal switch 44: travel limit detection button

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

1 is a schematic view using a clutch operating device of a semi-automatic variable speed vehicle according to the present invention, wherein a clutch 10 is provided between an engine 1 and a transmission 5 to control rotational power of the engine 1. The clutch pedal 11 is provided in the driver's seat to operate the clutch 10.

In addition, a first master cylinder 12 is provided between the clutch pedal 11 and the clutch 10 to hydraulically transfer the operating force of the pedal, and the clutch is pressed by the hydraulic pressure applied by the first master cylinder 12. The release cylinder 15 is provided in the clutch side so that 10 may be connected / separated.

Particularly, in the present invention, the second master cylinder 20 is provided on the hydraulic passages 13 and 14 between the first master cylinder 12 and the release cylinder 15. The second master cylinder 20 When the driver directly operates the clutch pedal 11 to connect / separate the clutch 10, the hydraulic actuation force of the first master cylinder 12 is transmitted to the release cylinder 15 as it is, and to the microcomputer 40. When the clutch 10 is automatically operated by the clutch 10, the internal hydraulic oil can be transmitted to the release cylinder 15 by the clutch automatic operation mechanism 30.

And, the clutch automatic operation mechanism 30 is operated by the microcomputer 40, the microcomputer 40 receives the signals of the power switch 42 and the clutch pedal switch 43, the clutch automatic operation mechanism 30 ) Is controlled, and the clutch automatic operation mechanism 30 is feedback-controlled again by receiving the measurement result of the movement amount detecting means 38 of the clutch automatic operation mechanism 30.

Here, the clutch pedal switch 43 is a sensor for detecting the operation of the clutch pedal 11, the power switch 42 is a manual operation by the driver to operate the clutch pedal 11 to connect / away from the clutch 10. It is a button for switching to the automatic mode (ON) for connecting / separating the clutch 10 according to the mode (OFF) or the control of the microcomputer 40.

The clutch automatic operation mechanism operated by such a microcomputer is shown in detail in FIG. 2 and FIG. 3. The configuration of the clutch automatic operation mechanism 30, which is a main part of the present invention, includes a plate-shaped base fixed at a predetermined position of a vehicle ( 31, a DC motor 32 installed below the base 31 and forward / reversely rotated according to the signal of the microcomputer 40, and a DC motor 32 installed above the base 31. Cam mechanism (33, 34, 35) for converting the rotational motion of the linear motion into a linear motion, and a pair of support blocks (37a) are provided at regular intervals above the base 31 in the front and rear direction of the cam mechanism A piston rod 36 installed through the support block 37a and 37b and linearly moved according to the operation of the cam mechanism, and installed on the one side support block 37a and the piston rod As the end of 36 is embedded and the piston rod 36 is linearly moved It consists of the 2nd master cylinder 20 which pressurizes a pressurized oil so that the clutch 10 may be connected / separated.

Here, the cam mechanism is provided on the upper side of the base 31 and is connected to the axis of the DC motor 32 and the disk 33 and the upper side of the disk 33, the piston rod 36 And a movable block 35 having a long guide groove 35a formed on the bottom thereof so as to be linearly movable, and an upper surface side of the disc 33 to be embedded in the guide groove 35a of the movable block 35. Is installed to be rotatable in the cam 33 is moved along the guide groove (35a) of the movable block 35 as the disk 33 is rotated cam type tappet (34) for linearly moving the moving block 35 and the piston rod (36) Consists of

In addition, the second master cylinder 20 has a first hydraulic passage 13 connected to the first master cylinder 12 and a second hydraulic passage 14 connected to the release cylinder 15 sequentially from the end thereof. When the piston rod 36 is moved forward, the first hydraulic passage is blocked by the steel wire rod 36a and the hydraulic oil is pressed by the second hydraulic passage 14 so that the clutch 10 is spaced apart from the driver. When the clutch pedal 11 is directly operated, the oil pressure flows through the first hydraulic passage 13 to pressurize the hydraulic oil into the second hydraulic passage 14, so that the clutch 10 is spaced apart.

In addition, a spring 39 is provided between the rear side of the moving block 35 and the other support block 37b to provide an elastic force so that the moving block 35 and the piston rod 36 can move in the forward direction quickly. It is installed.

On the other hand, the clutch automatic actuating mechanism 30 is provided with the movement limit detection buttons 44a and 44b and the movement amount detection means 38 to feed back the control of the apparatus, the movement limit detection button 44a. 44b is installed inside the pair of support blocks 37a and 37b to detect the movement limit in the forward direction and the movement direction in the backward direction of the movable block 35, and the detection result is the Input to the microcomputer 40 is made.

In addition, the movement amount detecting means 38 is installed in the upper position of the support block (37a) 37b to detect the movement distance of the movement block 35 and the piston rod 36, the movement amount detecting means 38 The rack 38a is fixed to the upper side of the movable block 35 and simultaneously moved to the rack 38a and the bracket 38d fixed to the upper side of the support blocks 37a and 37b. The pinion 38b is rotated, and the position sensor 38c detects the movement amount of the moving block 35 according to the rotation amount of the pinion 38b and inputs a signal to the microcomputer 40.

Therefore, the microcomputer 40 is connected to the clutch pedal switch 43, the power switch 42, the movement limit detection button 44, the movement amount detecting means 38 receives a signal, the DC according to the signal The motor 32 is rotated forward or reverse, and a signal is outputted to stop it.

In addition, the microcomputer 40 is installed on the shift lever and connected to a shift switch that the driver presses when shifting, and a brake pedal switch sensing the operation of the brake pedal to recognize the driver's shifting intention and braking intention. It is connected with throttle position sensor, RPM sensor and vehicle speed sensor to control the clutch automatic operation mechanism by inputting the throttle opening amount, engine speed and vehicle speed.

Referring to the operation of the clutch operating device of the semi-automatic variable speed vehicle according to the present invention configured as described above are as follows.

First, when the power switch 42 is in the manual mode (OFF), such as stepping on the clutch pedal during shifting or braking in a conventional manual transmission vehicle, the driver must operate the clutch pedal 11 directly to operate the clutch 10. Enforcement will take place. That is, the gear shifting operation is made by stepping on the clutch pedal 11.

When the clutch pedal 11 is pressed in this way, the pressure oil of the first master cylinder 12 flows into the second master cylinder 20 through the first hydraulic passage 13, and the pressure oil introduced in this way is the second hydraulic passage ( The clutch 10 is spaced apart from the power supply of the engine by operating the release fork while being transmitted to the release cylinder 15 through 14).

At this time, the microcomputer 40 recognizes the state of the power switch 42 to position the clutch automatic operating mechanism 30 in the reverse state as shown in Figure 4b and does not perform a special automatic control operation.

Next, when the power switch 42 is switched to the automatic mode (ON), the microcomputer 40 receives the input of the operation of the shift switch and the brake pedal switch to automatically control the clutch automatic operation mechanism 30.

That is, when the driver presses the shift switch installed in the shift lever to shift the vehicle speed while driving, the microcomputer 40 detects the driver's shift intention and outputs a clutch separation control signal to the D.C motor 32. In this case, as shown in FIG. 4A, the DC motor 32 rotates forward while the disc 33 rotates. As the disc 33 rotates, the cam type tappet 34 also rotates toward the front side at the same time. 35, the piston rod 36 is advanced as the moving block 35 moves.

Here, the cam tappet 34 is rotated along the disc 33 and at the same time moves in a central direction along the guide groove 35a of the moving block 35.

When the piston rod 36 moves inside the second master cylinder 20 as described above, first, the rod 36a installed at the end of the piston rod 36 in FIG. 3 blocks the first hydraulic passage 13. Then, the piston 36b continues to move forward to bend the rod 36a to a certain degree, and at the same time pressurize the pressure oil inside the second master cylinder 20 to the second hydraulic passage 14 to release the cylinder 15 and By operating the release fork, the clutch 10 is spaced apart.

When the moving block 35 moves forward by a predetermined time in the above process, as shown in FIG. 4A, the moving limit detection button 44a installed inside the support block 37a detects the signal and sends a signal to the microcomputer 40. By sending it, the rotation of the DC motor 32 is stopped. Simultaneously, referring to FIG. 3, since the rack 38a moves linearly together with the moving block 35, the pinion 38b engaged with the rack 38a is rotated, so that the position sensor 38c moves with the moving block 35. And the piston rod 36 to accurately detect the operation position, and then input to the microcomputer 40 to operate the DC motor 32 more precisely while feedback control again.

This automatic clutch separation operation allows the driver to move the shift lever to a desired shift position, thereby enabling shifting without stepping on the clutch pedal 11. After the shift is completed, when the DC motor 32 and the disc 33 are reversely rotated according to the signal of the microcomputer 40 to operate the moving block 35 and the piston rod 36 backward, the clutch 10 is It is connected again to transmit the power of the engine.

In this case, when the moving block 35 moves backward more than a predetermined time as shown in FIG. 4B, the moving limit detection button 44b installed in the support block 37b detects this and inputs it to the microcomputer 40. The microcomputer 40 receives the signal of the position sensor 38b at the same time and controls the DC motor 32.

In addition to the shifting operation as described above, the brake pedal sensor detects the intention of braking and inputs a signal to the microcomputer 40 to operate the clutch automatic operation mechanism 30 as described above.

On the other hand, when the driver directly operates the clutch pedal 11 even when the power switch 42 is in the automatic mode (ON), the clutch pedal switch is automatically switched to the manual mode while being off (OFF), in this case the clutch pedal According to the operation of the (11) the clutch 10 is made intermittent.

Therefore, the clutch operation device of the semi-automatic variable speed vehicle of the present invention configured and operated as described above can be operated more easily by selecting the manual mode or the automatic mode according to the driver's will, and thus, more comfortable driving can be achieved. It will give you the advantage.

In addition, the present invention is also provided with a disc, a cam type tappet, a moving block and the like to convert the rotational motion of the motor into a linear motion also provides the advantage that the durability and stability of the automatic clutch operating mechanism is improved.

In addition, the present invention also provides a more accurate and precise clutch control because the movement limit detection button, the movement amount detecting means is installed to accurately detect the movement state of the moving block and the piston rod to input a signal to the microcomputer.

Claims (7)

In a semi-automatic variable speed vehicle in which the driver can connect / separate the clutch under the control of the microcomputer together with the clutch pedal operated directly, A plate-shaped base fixed at a predetermined position of the vehicle, a DC motor installed at the lower side of the base and forward / reversely rotated according to the signal of the microcomputer, and installed at an upper side of the base and connected to the shaft of the DC motor. The disk is rotated, the movable block is installed so as to move linearly on the upper side of the disk and a long guide groove is formed on the bottom, and is rotatably installed on one side of the upper surface of the disk so as to be inherent in the guide groove of the movable block. A cam type tappet for linearly moving the moving block while being moved along the guide groove of the moving block as the disc rotates, a pair of support blocks installed at a predetermined interval on the base upper side in the front and rear direction of the moving block, and A piston rod fixed to the moving block and linearly moved along the moving block through the support block, and installed on the one support block And the clutch operation device of the semi-automatic transmission car, characterized in that the embedded end of the piston rod consisting of a master cylinder for pressurizing the pressure oil so as to connect / separate the clutch as the linear movement. The method of claim 1, Inside the pair of support blocks, a plurality of movement limit detection buttons for detecting a movement limit in a forward direction and a backward direction of the moving block are installed, and the movement limit detection button indicates its detection result. Clutch operating device for a semi-automatic variable speed vehicle, characterized in that input to the microcomputer. The method of claim 1, Clutch operation device of a semi-automatic shifting vehicle, characterized in that the movement amount detecting means for detecting the movement distance of the moving block between the support block. The method of claim 3, wherein The movement amount detecting means is a rack fixed to the upper side of the moving block is moved at the same time, the pinion is installed on the bracket fixed to the upper side of the support block and rotated in accordance with the movement of the rack, the pinion is moved in accordance with the rotation amount Clutch operating device of a semi-automatic shifting vehicle characterized in that the position sensor for detecting the movement amount of the block and input a signal to the microcomputer. The method according to any one of claims 1, 2, and 4, The micom is a clutch pedal switch for detecting the operation of the clutch pedal, and a manual mode (OFF) in which the driver operates the clutch pedal to connect / separate the clutch, or an automatic mode in which the clutch is connected / spaced under the control of the micom ( Connected to a power switch to turn ON); Clutch operating device of a semi-automatic variable speed vehicle, characterized in that for outputting a signal to forward / reverse / stop the D.C motor. The method of claim 1, The master cylinder has a first hydraulic passage and a second hydraulic passage sequentially connected from the end thereof; When the piston rod is advanced by the control of the microcomputer, the first hydraulic passage is blocked and the hydraulic oil is pressed by the second hydraulic passage so that the clutch is spaced apart. When the driver directly operates the clutch pedal, the first hydraulic passage is closed. The clutch operating device of a semi-automatic variable speed vehicle characterized in that the clutch is spaced apart while the pressure oil flows through and pressurizes the pressure oil to the second hydraulic passage. The method of claim 1, Clutch operation device of a semi-automatic variable speed vehicle, characterized in that the spring is provided between the moving block and the other support block to provide an elastic force to move the moving block and the piston rod in the forward direction.