JPH0596561U - Vehicle booster - Google Patents

Abstract

(57) [Summary] [Purpose] While maintaining responsiveness, obtain operation output suitable for the vehicle type. [Structure] Power piston 1 driven by compressed air
In a booster device for a vehicle comprising a power cylinder portion 11 having a power cylinder portion 7 and electromagnetic valves 3 and 4 for supplying and discharging compressed air to and from the power cylinder portion 11, the air pressure of the air tank 7 is reduced to a set pressure, A pressure adjusting valve 2 for sending the pressure as an instruction pressure, and a relay for converting the air pressure of the air tank 7 into the instruction pressure based on the instruction pressure from the pressure adjusting valve 2 and sending this to the power cylinder unit 11. Valve 5 and the solenoid valves 3 and 4 supply or release the instruction pressure from the pressure regulating valve 2 to cause the power cylinder unit 11 to operate.
The compressed air converted into the indicated pressure is supplied to and discharged from the.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a booster type operating device for a vehicle, which is applied to a clutch operating device or a transmission operating device adopted in an automobile or the like.

[0002]

[Prior Art]

 For large vehicles such as trucks, booster type clutch operating devices and transmission operating devices are generally used to reduce the operating force of the clutch and transmission. These operating devices generally have a single compressed air source as a drive source, so the operating output of the operating device is determined by this compressed air pressure and the pressure receiving area of the power piston. Was supplied and discharged with a solenoid valve.

[0003]

[Problems to be solved by the device]

 By the way, in the conventional operation device, in order to obtain a predetermined operation output according to the vehicle type, the pressure receiving area of the power piston is changed to cope with this. For this reason, there has been a problem that the number of types of the operating device has increased, which is an obstacle to standardization.

The present invention has been made in view of the above points, and an object thereof is to solve the above-mentioned problems and to perform an operation suitable for each vehicle type while maintaining responsiveness without increasing the types of operation devices described above. (EN) It is an object to provide a booster operating device for a vehicle, which can arbitrarily obtain an output.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above object is a booster operation for a vehicle, which includes a power cylinder portion having a power piston driven by compressed air, and a solenoid valve for supplying and discharging compressed air to and from the power cylinder portion. In the device, it is as follows.

[0006] The air pressure in the air tank is reduced to an arbitrarily set pressure, and the air pressure in the air tank is indicated based on the instruction pressure from the pressure adjustment valve that sends the pressure as the instruction pressure. And a relay valve for converting the pressure into a pressure and sending the pressure to the power cylinder section.The solenoid valve supplies or releases an instruction pressure from the pressure regulating valve or an output pressure from the relay valve, Compressed air converted into the indicated pressure is supplied to and discharged from the power cylinder section.

[0007]

[Action]

 Since the present invention is configured as described above, the pressure adjusting valve reduces the air pressure of the air tank to the predetermined set pressure, and the reduced air pressure is used as the instruction pressure to the relay valve. The relay valve directly converts the air pressure in the air tank into the instructed pressure based on the instructed pressure and sends it to the power cylinder section.

At the same time, the solenoid valve supplies or releases the indicated pressure from the pressure regulating valve or the output pressure from the relay valve, and the compressed air converted into the indicated pressure is supplied to the power cylinder portion. Eliminate.

The relay valve directly converts the air pressure in the air tank into the instructed pressure instead of the air pressure throttled by the pressure adjusting valve, and then sends out the instructed pressure. Therefore, the responsiveness of the power cylinder part is affected. There is nothing to do.

[0010]

【Example】

 Hereinafter, a preferred embodiment of the present invention will be exemplarily described in detail with reference to the drawings. (First Embodiment) FIG. 1 shows a first embodiment of a booster operating device for a vehicle according to the present invention, and is an explanatory diagram when applied to a semi-automatic clutch operating device.

In the figure, a vehicle booster operating device 1 comprises a pressure adjusting valve 2, solenoid valves 3 and 4, a relay valve 5 and a clutch operating device 6. The pressure adjusting valve 2 inputs the air pressure from the air tank 7 into its input pressure port 2a, and reduces the pressure from the output pressure port 2b and outputs the set predetermined air pressure. The output air pressure is set by adjusting the load of the built-in spring 2c of the pressure regulating valve 2.

The air pressure sent from the output pressure port 2b of the pressure regulating valve 2 is input to the indicating pressure port 5a of the relay valve 5 as the indicating pressure and via the solenoid valves 3 and 4. Air pressure is directly supplied from the air tank 7 to the supply pressure port 5b of the relay valve 5, and is supplied to the supply pressure port 5b based on the instruction pressure input to the instruction pressure port 5a. The generated air pressure is converted into the indicated pressure, and this is sent from the output pressure port 5c to the clutch operating device 6 via the double check valve 8.

Opening and closing of the solenoid valves 3 and 4 are controlled by a controller 9, whereby air pressure is supplied to and discharged from the operating device 6 from the output pressure port 5c of the relay valve 5. Reference numeral 10 is a switch of the controller 9.

Next, the clutch device 6 is composed of a power cylinder portion 11, a hydraulic cylinder portion 12, a manual cylinder portion 13 and a control valve portion 14. The power cylinder portion 11 is composed of a cylindrical cylinder 16 and a power piston 17 slidably arranged in the cylinder 16. The power piston 17 is biased in the direction of arrow a in the figure by a return spring 19 arranged in the atmospheric pressure chamber 18, and compressed air is supplied to the pressure chamber 20 from the output pressure port 5c of the relay valve 5. When introduced, the power piston 17 moves (drives) in the direction of arrow b in the figure against the return spring 19.

The hydraulic cylinder portion 12 is formed in a piston rod 21 integrally connected to the power piston 17. That is, in the hydraulic cylinder portion 12, the relay piston 23 is reciprocally disposed in the hydraulic cylinder 22 formed in the piston rod 21, and the relay piston 23 is provided with a clutch plate wear amount. The piston rod 21 and a push rod 25 connected to a clutch lever (not shown) are connected to each other via an adjusting mechanism 24. Then, when the power piston 17 moves forward, the clutch is disengaged.

The manual cylinder portion 13 is arranged at the rear portion of the power cylinder portion 11 (rearward of the power piston 17 on the returning side). The manual piston 31 is designed to move to the right in FIG. 1 by the hydraulic pressure supplied to the liquid chamber 32, and the power piston 17 is moved through the piston rod pushing end 21a. It is designed to push in the forward direction.

The control valve unit 14 drives the power piston 17 by a manual operation, so that the hydraulic fluid pressure supplied from the master cylinder (not shown) to the hydraulic chamber 32 via the hydraulic fluid port 33 causes the power to be supplied from the air tank 7. The supply / discharge of compressed air is controlled in the pressure chamber 20 of the cylinder portion 11 via the double check valve 8 (at this time, the piston 8a of the valve 8 is moved to the right) and the introduction port 34.

Further, since the clutch operating device 6 operates the clutch operating device 6 in a semi-automatic manner when the vehicle is stopped, the controller 9 and the switch 10 turn on the supply solenoid valve 3 to open the valve. (At this time, the exhaust solenoid valve 4 is OFF and is closed), and the predetermined air pressure from the output pressure port 2b of the pressure regulating valve 2 is sent to the indicating pressure port 5a of the relay valve 5 as the indicating pressure. ..

If the air supply solenoid valve 3 is closed when it is OFF and the exhaust solenoid valve 4 is opened when it is open, the indicated pressure port 5a is opened to the atmosphere, and the air supply solenoid valve 3 is closed when it is closed. If the exhaust solenoid valve 4 is closed when it is closed, air is trapped.

From the output pressure port 5c of the relay valve 5, the air pressure converted into the indicated pressure is sent out, and the double check valve 8 (at this time, the piston 8a of the valve 8 is moved leftward) and the introduction port 34. The compressed air is supplied to the pressure chamber 20 of the power cylinder portion 11 via the. This is to enable the clutch 9 to be disengaged by operating the clutch operating device 6 by the controller 9 even if the clutch pedal is released and there is no hydraulic fluid from the master cylinder.

In this case, since the operating force adapted to the clutch operation is output from the operating device 6, the set pressure of the pressure adjusting valve 2 is adjusted to optimize the instruction pressure to the relay valve 5. can do.

Further, by adjusting the load of the spring 2c of the pressure control valve 2 and the load of the spring 5d of the relay valve 5, the air pressure supplied to the clutch operating device 6 can be adjusted in a wide range. can do.

(Second Embodiment) FIG. 2 shows a second embodiment of the vehicle booster operating device according to the present invention, which is an explanatory diagram when it is applied to a transmission operating device. Are denoted by the same reference numerals and the description thereof is omitted.

In FIG. 2, the vehicle booster operating device 100 includes a pressure adjusting valve 2, a relay valve 5, a speed changer operating device 40, and solenoid valves 41, 42, 43, 44. The transmission operating device 40 mainly includes a select actuator 45 and a shift actuator 46. Here, 47 is a change lever, 48 is a controller, and 49 is a transmission.

Contact type or non-contact type gear position sensors 51 and 52 are used for the select actuator 45 and the shift actuator 46 (in this figure, a contact type sensor is shown for easy understanding). .. One gear position sensor 51 is disposed near the end of the select rod 53 of the select actuator 45, and the other gear position sensor 52 is disposed near the end of the shift rod 54 of the shift actuator 46. ..

Each gear position sensor 51, 52 is composed of three limit switches 51 a, 51 b, 51 c and 52 a, 52 b, 52 c, and when the change lever 47 is operated, the select rod 53 or the shift rod 54 is brought to a predetermined position. When moved, one of the limit switches 51a, 51b, 51c and 52a, 52b, 52c is pressed by the flange-shaped end portions 53a, 54a of the rods 53, 54 to turn on, and this signal is sent to the controller 48. Upon input, the transmission 49 is operated according to the position of the change lever 47. PL is an indicator lamp and SP is an abnormality alarm.

In the figure, the operation of the actuators 45 and 46 will be described by taking the shift actuator 46 as an example.

The actuator 46 includes a cylinder 55, a power piston 54b slidably arranged in the cylinder 55, and a pair of auxiliary pistons 56a and 56b arranged on both sides of the power piston 54b. Has been done. The position of the power piston 54b shown in the figure is the neutral position.

The power piston 54b is integrated with the shift rod 54, but the pair of auxiliary pistons 56a and 56b are slidably fitted between the inner peripheral surface of the cylinder 55 and the outer peripheral surface of the power piston 54b. ing.

Then, a predetermined pressure is sent from the relay valve 5 to the pair of pressure chambers 57 a and 57 b formed on both sides of the power piston 54 b via the solenoid valves 43 and 44 operated by the controller 48. When compressed air having a pressure is supplied or discharged, the power piston 54b slides (drives) in the arrow a direction or the arrow b direction by this air pressure.

At this time, the pair of auxiliary pistons 56a and 56b assist the output of the power piston 54b when the gear is disengaged. Therefore, when compressed air is supplied to the pressure chambers 57a and 57b at the same time, the auxiliary piston 56a or 56b drives the power piston 54b toward the neutral position, and the center stopper 55a positions the neutral position. It is what makes up.

In such a transmission operation, in order to output an operating force adapted to the transmission operation from the actuator 46, the set pressure of the pressure adjusting valve 2 is adjusted and the relay valve 5 is operated. The indicated pressure can be optimized.

The technique of the present invention is not limited to the technique in the above-mentioned embodiment, and means of another aspect having a similar function may be used. The technique of the present invention is within the scope of the above configuration. Various changes and additions are possible.

[0034]

[Effect of the device]

 As is apparent from the above description, according to the vehicle booster operating device of the present invention, the pressure adjusting valve and the relay valve capable of adjusting the set pressure are arranged and connected to the compressed air source. It is possible to obtain an operation output that is suitable for the vehicle type and maintain a wide range of output adjustment while maintaining responsiveness without increasing the number of types of booster operating devices.

[Brief description of drawings]

FIG. 1 is an explanatory diagram when applied to a semi-automatic clutch operating device showing a first embodiment of a vehicle booster operating device of the present invention.

FIG. 2 is an explanatory diagram when applied to a transmission operating device showing a second embodiment of the present invention.

[Explanation of symbols]

 1,100 Vehicle booster operation device 2 Pressure regulating valve 3,4,41-44 Solenoid valve 5 Relay valve 7 Air tank 11,55 Power cylinder part 17,54b Power piston

Claims (1)

[Scope of utility model registration request] 1. A booster device for a vehicle comprising a power cylinder portion having a power piston driven by compressed air and a solenoid valve for supplying and discharging compressed air to and from the power cylinder portion, wherein an air pressure of an air tank is arbitrary. A pressure control valve that reduces the pressure to the set pressure and sends the pressure as an instruction pressure; and, based on the instruction pressure from the pressure adjustment valve, converts the air pressure in the air tank into the instruction pressure, which is then converted into the power cylinder. A relay valve that sends the pressure to the pressure control valve or the output pressure from the relay valve is supplied or released by the solenoid valve, and the power cylinder is converted to the pressure command. Booster operating device for vehicle characterized by supplying and discharging compressed air