JPH0638182Y2 - Clutch operating device - Google Patents

Description

[Detailed description of the device] a. Industrial field of application The present invention relates to a clutch operating device.
The present invention relates to a clutch operating device including a clutch operating actuator.

b. Conventional Technique FIG. 2 conceptually shows a conventional clutch operating device.

This clutch operating device includes an actuator 1. The actuator 1 has a pneumatic cylinder section 2 and a hydraulic cylinder section 3. The pneumatic cylinder section 2 is divided into a pressure chamber 5 and an atmospheric pressure chamber 6 by a power piston 4. Further, the hydraulic cylinder unit 3 includes the first and second hydraulic cylinder units.
And the oil chamber 9 is formed between the pistons 7 and 8. The first relay piston 7 is engaged with the power piston 4 via the rod 10, and the second relay piston 8 is engaged with the clutch lever 12 via the rod 11.

The clutch operating device also has first and second solenoid valves 13 and 14. The first and second solenoid valves 13 and 14 are normally closed solenoid valves, and the first solenoid valve 13 is excited to communicate the air reservoir 15 and the pressure chamber 5 of the actuator 1 with each other. The solenoid valve 14 is excited so that its atmospheric port 14a communicates with the pressure chamber 5 of the actuator 1.

Such a clutch operating device is operated as follows.

When the change lever 16 is put into, for example, the D range (automatic shift position), a confirmation signal is input from the confirmation sensor 17 to the controller 18. Then, the controller 18 excites the first solenoid valve 13. Therefore, the compressed air in the air reservoir 15 is supplied to the pressure chamber 5 of the actuator 1 to move the power piston 4 to the right in FIG. When the power piston 4 is moved forward, its motion is transmitted to the first relay piston 7 via the rod 10, and further transmitted to the second relay piston 8 via the liquid oil in the oil chamber 9 to cause the rod to move. It is transmitted to the clutch lever 12 via 11. And
The clutch lever 12 is actuated and the clutch is disengaged.
When the clutch is completely disengaged, the first solenoid valve 13 is demagnetized and the supply of compressed air to the pressure chamber 5 is stopped.

When the clutch is released in this way, the controller 18
An actuator (not shown) is actuated by the command signal from the transmission, and thereby the transmission is operated from the starting stage, for example, neutral to the second speed. When the accelerator is depressed by a predetermined amount, the operation is transmitted to the controller 18, a command signal is output from the controller 18 to the second solenoid valve 14, and the second solenoid valve 14 is excited to open the valve. The compressed air in the first pressure chamber 5 is discharged to the outside from the atmosphere port 14a. When the compressed air in the pressure chamber 5 is discharged to the outside, the power piston 4 is moved back together with the push rod 11 by the spring attached to the clutch (not shown), and the clutch is connected. Meanwhile, when the push rod 11 returns to the position where the clutch starts to be in the half-clutch state, the second solenoid valve 14 is alternately excited and demagnetized by the command signal of the controller 18, whereby the clutch is smoothly connected. It

When the push rod 11 returns to the point where the controller 18 confirms that the clutch connection is almost completed by the engine speed, vehicle speed, etc., the second solenoid valve 14 is excited by the command signal from the controller 18. It Therefore, the compressed air in the pressure chamber 5 is discharged to the outside by the second solenoid valve 14. Then, the return movement of the push rod 11 is completed.

In the actuator 1 of the clutch operating device, the oil chamber 9 is formed between the power piston 4 and the clutch lever 12, and the power transmission between the power piston 4 and the clutch lever 12 is performed via the liquid oil in the oil chamber 9. Is going. Further, in this actuator 1, the stroke position of the power piston 4 is always maintained constant by increasing or decreasing the amount of liquid oil in the oil chamber 9 in response to the change in the stroke position of the clutch due to wear of the clutch or the like. There is.

In such a clutch operating device, by detecting the stroke of the power piston 4, the first stroke sensor 20 for knowing the operation amount of the clutch operating device and the moving amount of the clutch lever 12 are detected. And a second stroke sensor 21 for knowing the actual operating position of the. In the clutch operating device, based on the signals from the first stroke sensor 20 and the second stroke sensor 21, the clutch disengagement position, the contact position, the half-clutch position, and the failure diagnosis of the actuator 1 are performed. ing.

c. Problems to be solved by the invention By the way, the stroke sensor 2 of the clutch operating device
In 0 and 21, a variable resistor is used for the detector. In the first stroke sensor 20, the power piston 4 is connected to the rod 22.
One end of the rod 22 is brought into contact with the other end of the rod 22 so as to face the inside of the sensor housing 23, and the other end of the rod 22 is brushed.
24 is provided, and the brush 24 is slid on the resistor 25 provided in the sensor housing 23 to detect the amount of movement of the power piston 4. In the second stroke sensor 21, the clutch is used. One end of the rod 26 is engaged with the lever 12, the other end of the rod 26 is exposed inside the sensor housing 27, and a brush 28 is arranged at the other end of the rod 26.
The amount of movement of the clutch lever 12 is detected by sliding 28 on a resistor 29 arranged in the sensor housing 27.

Thus, the stroke sensor of the clutch operating device
In 20, 21, the rods 22 and 26 move in and out of the sensor housings 23 and 27, so that volume changes occur in the sensor housings 23 and 27.

If the sensor housings 23 and 27 are sealed, pressure fluctuations may occur in the sensor housings 23 and 27, which may damage the detection unit.
If the inside of 3,27 is opened to the atmosphere, dust may be inhaled by the breathing action, and it may adhere to the detection unit and become undetectable.

Then, the objective of this invention is providing the clutch operating device which improved the reliability and durability of a stroke sensor.

d. Means for Solving the Problems In the clutch operating device of the present invention, one end of the rod is engaged with the power piston of the clutch operating actuator, and the other end of the rod is exposed to the inside of the first sensor housing.
A first stroke sensor that detects the movement of the power piston at a detection portion in the first sensor housing via the rod, one end of the rod is engaged with a clutch lever, and the other end of the rod is attached to the first stroke sensor. A second sensor housing in which the movement of the clutch lever is detected by a detection portion in the second sensor housing via the rod.
The stroke sensor and the stroke sensor are installed so that the rods move in and out of the housings in opposite directions, and the two housings communicate with each other.

e. Operation In the clutch operating device of the present invention, when the housing volume of one stroke sensor is reduced, the housing volume of the other stroke sensor is expanded. Therefore, the air extruded from one of the housings is sucked into the other housing to eliminate the pressure fluctuation in the housings of each other.

f. Embodiment FIG. 1 conceptually shows a clutch operating actuator of a clutch operating device according to the present invention.

This clutch operating actuator 30 has a pneumatic cylinder portion 31 and a hydraulic cylinder portion 32, similar to the above-mentioned conventional one, and the pneumatic cylinder portion 31 is powered by a power piston 33 so that the pressure chamber 34 and the atmospheric pressure chamber are 35, the hydraulic cylinder portion 32 has first and second relay pistons 36, 37, and an oil chamber 38 is formed between these pistons 36, 37. The first relay piston 36 is linked to the rod 39 arranged on the power piston 33, and the second relay piston 37 is linked to the clutch lever 41 via the rod 40. Further, in this actuator 30, a spring 42 is provided in the atmospheric pressure chamber 35 of the pneumatic cylinder portion 31, the power piston 33 is biased to the left side in FIG. The spring 43 is also arranged between the relay pistons 36 and 37, and the relay pistons 36 and 37 are urged in the directions away from each other.

Then, this actuator 30 operates the power piston 33 by sending compressed air to the pressure chamber 34 in the same manner as the above-mentioned conventional one, and the movement thereof is performed by the rod 39, the first relay piston 36, and the oil. The liquid oil in the chamber 38 is transmitted to the clutch lever 41 via the second relay piston 37 and the rod 40, and the lever 41 is operated to disengage the clutch. When the compressed air in the pressure chamber 34 is discharged, the clutch lever 41 rotates counterclockwise about O by the spring attached to the clutch. Along with that, the power piston via the rod 40
33 is activated and the clutch is reengaged. In addition,
In the above actuator 30, the rod of the power piston 33
A stop valve 44 is formed between 39 and the first relay piston 36. The shut-off valve 44 is opened when the actuator 30 is in the non-actuated state, that is, the clutch is in the engaged state, and is closed when the actuator 30 is actuated to the right in FIG. Then, the position of the stroke of the power piston 33 due to wear of the clutch or the like is caused by replenishing the liquid oil from the oil reservoir (not shown) to the oil chamber 38 via the stop valve 44 or returning the liquid oil from the oil chamber 38 to the oil reservoir. Compensating for fluctuations.

Further, the clutch operating device includes a first stroke sensor 50 and a second stroke sensor 60.

The housing 51 of the first stroke sensor 50 includes a main housing 51a accommodating a detecting portion and the main housing 51a.
And a sub-housing 51b for supporting.
And in this stroke sensor 50, the actuator
The rod 52 is inserted through the flange portion 30a of the member 30, one end of the rod 52 is in contact with the power piston 33, and the other end thereof is the sub-housing 51b.
A rod 53 is mounted on the main housing 51a and the sub-housing 51b while facing the inside, and one end of the rod 53 is in contact with the other end of the rod 52. A brush 54 is engaged with the other end of the rod 53, and the brush 54 is in sliding contact with a resistor 55 installed in the main housing 51a.

The housing 61 of the second stroke sensor 60 is also a main housing 61a accommodating the detecting portion and the main housing 61a.
And a sub-housing 61b for supporting the.
In the stroke sensor 60, one end of the rod 62 is connected to the clutch lever 41 and the other end is the sub-housing.
While facing the inside of 61b, the rod 63 is mounted on the main housing 61a and the sub-housing 61b, and one end thereof is brought into contact with the other end of the rod 62 via the slider 64. A brush 65 is engaged with the other end of the rod 63, and the brush 65 is a resistor 6 installed in the main housing 61a.
Sliding on 6.

The housings 51 and 61 described above are both configured in a sealed state, and the chambers A and B of these housings are connected to each other by a pipe 70. Further, as shown in FIG. 1, these housings 51 and 61 are installed such that the rods 52 and 62 are moved in and out of the respective housings 51 and 61 in reverse.

Therefore, when the power piston 33 is operated to the right in FIG. 1 to disengage the clutch and the rod 52 enters the housing 51 of the first stroke sensor 50,
62 exits the housing 61 of the second stroke sensor 60. Such movements of the rods 52 and 62 in the stroke sensors 50 and 60 reduce the volume of the chamber A of the housing 51 and expand the volume of the chamber B of the housing 61, so that the extra volume of the chamber A of the housing 51 is increased. Air is sent to the chamber B of the housing 61 to make up for the lack of air in the chamber B of the housing 61. When the clutch is re-engaged, the volume of the chamber B of the housing 61 is reduced, contrary to the above, and
Since the volume of the chamber A of 51 is expanded, the chamber B of the housing 61 is expanded.
Excess air is sent to the chamber A of the housing 51 to make up for the lack of air in the chamber A of the housing 51.

In this way, the chambers A and B of the housings 51 and 61 are maintained at a substantially constant pressure. The movement of the rod 52 is transmitted to the rod 53, and the brush 54 engaged with the rod 53 slides on the resistor 55, whereby the power piston 33
Position is detected and the movement of the rod 62 is
The position of the clutch lever 41 is detected by the brush 65 that is transmitted to the rod 63 via 64 and is engaged with the rod 63 to slide on the resistor 66.

g. Effect of the Invention As described above, in the clutch operating device according to the present invention,
The housings of the two stroke sensors are made to communicate with each other, and when the volume of the housing of one stroke sensor is increased, the volume of the housing of the other stroke sensor is reduced.

Therefore, almost constant pressure is maintained in the housing of each stroke sensor, the damage to the detection part due to pressure change does not occur, and the outside air does not enter the housing, so the detection part is exposed to dust. Without, it can increase confidence.

[Brief description of drawings]

FIG. 1 is a sectional view conceptually showing a main part of a clutch operating device according to the present invention, and FIG. 2 is a conceptual diagram showing a conventional clutch operating device. 30 ... Clutch actuator, 31 ... Pneumatic cylinder part, 32 ... Hydraulic cylinder, 33 ... Power piston, 36 ... First relay piston, 37 ... Second relay piston, 38 ... Oil chamber , 39, 40 ... Rod, 41 ... Clutch lever, 44 ... Closing valve, 50 ... First stroke sensor, 51 ... Housing, 51a ... Main housing, 51b ... Sub housing, 52, 53 ... … Rod, 54 …… Brush, 55 …… Resistor, 60 …… Second stroke sensor, 61 …… Housing, 61a …… Main housing, 61b …… Sub housing, 62,63 …… Rod, 64 …… Slider, 65 ... Brush, 66 ... Resistor.

Claims (1)

[Scope of utility model registration request] 1. A power piston of a clutch operating actuator is engaged with one end of a rod, the other end of the rod is exposed in a first sensor housing, and the motion of the power piston is passed through the rod. The first stroke sensor that is detected by the detection unit in the first sensor housing and one end of the rod are engaged with the clutch lever, and the other end of the rod is exposed in the second sensor housing. A second stroke sensor for detecting the movement of the first stroke sensor through the rod by the detection portion in the second sensor housing, the first stroke sensor and the second stroke sensor , So that the rods move in and out of the housings in opposite directions, and install both housings so that they communicate with each other. A clutch operating device, characterized in that the.