Clutch booster with displacement feedback function

Abstract

The utility model relates to a clutch booster with a displacement feedback function, which comprises a valve body, a cylinder cover, a shaft sleeve, a piston piece, an inner sleeve rod, an outer sleeve rod, a valve framework and an ejector rod, and further comprises a displacement sensor, a mounting plate and a moving piece, the displacement sensor is fixedly connected with the valve body through the mounting plate, and the valve body is provided with a detection hole. The output end of the displacement sensor penetrates through the detection hole to be connected with a moving piece, and the moving piece is clamped between the piston piece and the valve body. The main purpose of the utility model is that the piston piece drives the output end of the displacement sensor to contract or expand through the moving piece, the displacement sensor provides displacement signals for clutch control of a vehicle, and important parameters are provided for maintenance adjustment and self-correction and self-inspection of the vehicle.

Description

Technical Field

[0001] The utility model relates to the technical field of clutch boosters, in particular to a clutch booster with a displacement feedback function. Background Art

[0002] The clutch booster is a device that uses gas to assist the clutch to separate and engage. It is commonly used in the clutch control system of the commercial vehicle industry. The patent number is CN201120406171.6, which discloses a new type of clutch booster pump balance piston assembly. Air pressure is connected to the air inlet A, and brake fluid is input into the oil inlet C. The oil pressure is generated in the hydraulic chamber through the combined action of the pedal force and the air pressure, and is output from the oil outlet D, so that the auxiliary thrust output by the booster pump can truly follow the driver's clutch pedal force, making clutch control easier. However, with the development of automotive intelligent technology, it is necessary to monitor the clutch structure to quantify the wear of the friction plate so as to replace the friction plate in time, so as to facilitate the self-correction and self-inspection of the vehicle's central control system, thereby improving driving safety. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the technical solution adopted by the utility model is: a clutch booster with displacement feedback function, including a valve body, a cylinder cover, a shaft sleeve, a piston part, an inner sleeve rod, an outer sleeve rod, a valve frame and a push rod, the valve body is provided with an exhaust port, an oil inlet and an oil outlet, one side of the push rod is provided with an air inlet, the valve body is connected with a shaft sleeve through the cylinder cover, the outer side of the shaft sleeve is slidably connected with a piston part, and a piston spring is provided between the piston part and the valve body, the piston part abuts against an inner sleeve rod axially moving in the valve body, and the inner sleeve rod is provided at the oil inlet and Between the oil outlets, an outer sleeve rod is slidably connected to the inner side of the shaft sleeve, and an arc spring sheet is provided between the shaft sleeve and the outer sleeve rod, a push rod is fixedly connected to the outer sleeve rod, a valve skeleton for controlling the on and off of the air inlet and exhaust port is provided between the outer sleeve rod and the push rod, and a reset spring is provided between the valve skeleton and the push rod. It also includes a displacement sensor, a mounting plate and a moving part. The displacement sensor is fixedly connected to the valve body through the mounting plate, the valve body is provided with a detection hole, and the output end of the displacement sensor is connected to the moving part through the detection hole, and the moving part is clamped between the piston part and the valve body.

[0004] By adopting the above technical scheme, the air inlet and the exhaust port are used for an external pneumatic system, the oil inlet and the oil outlet are used for an external hydraulic system, and the displacement sensor is used for an external central control. When the push rod drives the outer sleeve rod to move toward the shaft sleeve, the valve skeleton opens, and the piston moves toward the inner sleeve rod under the action of air pressure. At this time, the piston drives the output end of the displacement sensor to contract through the moving part, and the displacement sensor provides a displacement signal for the vehicle's clutch control, providing important parameters for the vehicle's maintenance adjustment, self-correction and self-inspection.

[0005] The utility model is further configured that a positioning rod for opening the valve frame is provided in the shaft sleeve, the positioning rod passes through the outer sleeve rod and is located on one side of the valve frame, and the arc spring piece is arranged between the positioning rod and the outer sleeve rod.

[0006] Furthermore, the outer sleeve is provided with a first side hole connected to the air inlet, the shaft sleeve is provided with a second side hole connected to the first side hole, the piston member is provided with a force-bearing cavity corresponding to the second side hole, and the force-bearing cavity is distributed circumferentially at the bottom of the piston member.

[0007] By adopting the above technical solution, when the driver steps on the pedal, the push rod drives the outer rod to move toward the shaft sleeve, the arc spring piece is compressed, the valve frame is acted upon by the positioning rod to leave the outer rod, the return spring is compressed, thereby opening the valve frame to connect to the air inlet, and increasing the force-bearing area of ​​the piston member through the force-bearing chamber to control the piston member to move toward the direction of the inner rod, and controlling the brake fluid to be output from the oil outlet through the inner rod; conversely, when the driver releases the pedal, the push rod is reset, and at this time the piston member, the outer rod, and the valve frame are reset by the piston spring, the arc spring piece, and the return spring, respectively, thereby closing the valve frame and disconnecting the air inlet, and the overall structure is simple and easy to operate.

[0008] The utility model is further configured that the moving part is provided with a threaded column and a slot, the moving part is threadedly connected to the displacement sensor through the threaded column, the piston part is provided with a raised ring adapted to the slot, and the moving part is clamped to the piston part through the raised ring.

[0009] Furthermore, the moving part is provided with an arc surface matched with the inner wall of the valve body.

[0010] Furthermore, reinforcing ribs are provided between the upper surface of the piston and the raised ring.

[0011] By adopting the above technical solution, the moving part can be connected to the piston part of any rotation angle through the raised ring to facilitate installation. When the piston part moves, the moving part is always clamped between the slot and the inner wall of the valve body. The structural strength of the piston part is improved by reinforcing ribs, making its transmission structure stable.

[0012] The utility model is further configured such that a sealing sleeve is provided on one side of the piston member located on the raised ring, the piston member is sealed and connected to the valve body through the sealing sleeve, threaded holes are provided on both sides of the detection hole of the valve body, the displacement sensor is connected to the valve body through the threaded holes, and a sealing ring is provided between the displacement sensor and the detection hole.

[0013] By adopting the above technical solution, the piston is sealed and connected to the inner cavity of the valve body through the sealing sleeve, and the displacement sensor is sealed and connected to the detection hole through the sealing ring, thereby ensuring the air tightness inside the valve body and improving the pneumatic transmission efficiency.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] When the driver steps on the pedal, the push rod drives the outer rod to move toward the shaft sleeve, thereby opening the valve frame to connect to the air inlet, controlling the piston to move toward the inner rod, and controlling the brake fluid to be output from the oil outlet through the inner rod. The piston drives the output end of the displacement sensor to contract or open through the moving part, and the displacement sensor provides a displacement signal for the vehicle's clutch control, providing important parameters for the vehicle's maintenance, adjustment, self-correction and self-inspection.

[0016] The embodiments of the utility model are further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 For the utility model Figure 2 A partial enlarged view of the A-direction view;

[0020] Figure 4 A three-dimensional diagram of the displacement sensor of the utility model

[0021] Figure 5 It is a cross-sectional view of the piston member of the utility model;

[0022] Figure 6 A three-dimensional diagram of the piston member of the utility model;

[0023] Among them: 1-valve body, 2-cylinder cover, 3-shaft sleeve, 4-piston, 5-inner sleeve rod, 6-outer sleeve rod, 7-valve frame, 8-pusher, 9-piston spring, 10-arc spring, 11-reset spring, 12-displacement sensor, 13-mounting plate, 14-moving part, 15-positioning rod, 16-sealing sleeve, 17-sealing ring, 41-force chamber, 42-raised ring, 43-reinforcement rib, 100-air inlet, 101-exhaust port, 102-oil inlet, 103-oil outlet, 104-detection hole, 105-first side hole, 106-second side hole, 141-threaded column, 142-slot, 143-arc surface; DETAILED DESCRIPTION

[0024] like Figure 1 , 2As shown, this embodiment provides a clutch booster with displacement feedback function, including a valve body 1, a cylinder cover 2, a shaft sleeve 3, a piston member 4, an inner sleeve rod 5, an outer sleeve rod 6, a valve frame 7 and a push rod 8. The valve body 1 is provided with an exhaust port 101, an oil inlet 102 and an oil outlet 103. One side of the push rod 8 is provided with an air inlet 100. The valve body 1 fixes the cylinder cover 2 through a retaining spring, and the shaft sleeve 3 is clamped to the center of the cylinder cover 2 through the retaining spring. The outer side of the shaft sleeve 3 is slidably connected with a piston member 4, and a piston spring 9 is provided between the piston member 4 and the valve body 1. The piston member 4 abuts against an inner sleeve rod 5 that moves axially on the valve body 1. The inner sleeve rod 5 is provided between the oil inlet 102 and the oil outlet 103. An outer sleeve rod 6 is slidably connected to the inner side of the sleeve 3, and an arc spring piece 10 is provided between the sleeve 3 and the outer sleeve rod 6. The outer sleeve rod 6 is fixedly connected to a push rod 8 through a retaining spring. A valve skeleton 7 for controlling the on / off of an air inlet 100 and an exhaust port 101 is provided between the outer sleeve rod 6 and the push rod 8, and a reset spring 11 is provided between the valve skeleton 7 and the push rod 8. A displacement sensor 12, a mounting plate 13 and a moving part 14 are also included. The displacement sensor 12 is fixedly connected to the valve body 1 through the mounting plate 13. The valve body 1 is provided with a detection hole 104. The output end of the displacement sensor 12 is connected to the moving part 14 through the detection hole 104. The moving part 14 is clamped between the piston part 4 and the valve body 1.

[0025] Combination Figure 3 As shown, in this embodiment, a positioning rod 15 for opening the valve skeleton 7 is provided in the sleeve 3, the positioning rod 15 passes through the outer sleeve rod 6 and is located on one side of the valve skeleton 7, the arc spring piece 10 is provided between the positioning rod 15 and the outer sleeve rod 6, the outer sleeve rod 6 is provided with a first side hole 105 connected to the air inlet 100, the sleeve 3 is provided with a second side hole 106 connected to the first side hole 105, the piston member 4 is provided with a force-bearing cavity 41 corresponding to the second side hole 106, and the force-bearing cavity 41 is distributed circumferentially at the bottom of the piston member 4.

[0026] Combination Figure 4 , 5 As shown in Figure 6, in this embodiment, the moving part 14 is provided with a threaded column 141 and a slot 142, the moving part 14 is threadedly connected to the displacement sensor 12 through the threaded column 141, the piston part 4 is provided with a raised ring 42 adapted to the slot 142, the moving part 14 is clamped to the piston part 4 through the raised ring 42, the moving part 14 is provided with an arc surface 143 adapted to the inner wall of the valve body 1, and a reinforcing rib 43 is provided between the upper surface of the piston part 4 and the raised ring 42.

[0027] In this embodiment, a sealing sleeve 16 is provided on one side of the piston member 4 located on the raised ring 42, and the piston member 4 is sealed and connected to the valve body 1 through the sealing sleeve 16. The valve body 1 is provided with threaded holes on both sides of the detection hole 104, and the displacement sensor 12 is connected to the valve body 1 through the threaded holes. A sealing ring 17 is provided between the displacement sensor 12 and the detection hole 104, and the piston member 4 is sealed and connected to the inner cavity of the valve body 1 through the sealing sleeve 16. The displacement sensor 12 is sealed and connected to the detection hole 104 through the sealing ring 17, thereby ensuring the airtightness inside the valve body 1 and improving the pneumatic transmission efficiency.

[0028] The working principle of the utility model is that when the driver steps on the pedal, the push rod 8 drives the outer sleeve rod 6 to move toward the shaft sleeve 3, the arc spring piece 10 is compressed, the valve skeleton 7 is affected by the positioning rod 15 to leave the outer sleeve rod 6, the return spring 11 is compressed, thereby opening the valve skeleton 7 to connect with the air inlet 100, increasing the force area of ​​the piston member 4 through the force chamber 41, and controlling the piston member 4 to move toward the direction of the inner sleeve rod 5 by the force of air pressure, the piston spring 9 is compressed, and the brake fluid is controlled to be output from the oil outlet 103 through the inner sleeve rod 5; conversely, when the driver releases the pedal, the outer sleeve rod 6 is affected by the arc spring piece 10 to drive the push rod 8 to reset, the valve skeleton 7 abuts against the outer sleeve rod 6 under the action of the return spring 11 and disconnects the air source, and the piston member 4 is reset by the action of the piston spring 9 at this time, and during the above action, the piston member 4 drives the output end of the displacement sensor 12 to contract or open through the moving member 14, and the displacement sensor 12 provides a displacement signal for the clutch control of the vehicle.

[0029] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A clutch booster with displacement feedback function, comprising a valve body (1), a cylinder cover (2), a shaft sleeve (3), a piston member (4), an inner sleeve rod (5), an outer sleeve rod (6), a valve frame (7) and a push rod (8), wherein the valve body (1) is provided with an exhaust port (101), an oil inlet port (102) and an oil outlet port (103), an air inlet port (100) is provided on one side of the push rod (8), the valve body (1) is connected to the shaft sleeve (3) through the cylinder cover (2), the outer side of the shaft sleeve (3) is slidably connected to the piston member (4), a piston spring (9) is provided between the piston member (4) and the valve body (1), and the piston The member (4) is abutted against an inner sleeve rod (5) which is axially movable on the valve body (1); the inner sleeve rod (5) is arranged between the oil inlet (102) and the oil outlet (103); an outer sleeve rod (6) is slidably connected to the inner side of the sleeve (3); a circular arc spring sheet (10) is arranged between the sleeve (3) and the outer sleeve rod (6); the outer sleeve rod (6) is fixedly connected to a push rod (8); a valve frame (7) for controlling the on / off of the air inlet (100) and the air outlet (101) is arranged between the outer sleeve rod (6) and the push rod (8); a return spring (11) is arranged between the valve frame (7) and the push rod (8); the invention is characterized in that: The invention also comprises a displacement sensor (12), a mounting plate (13) and a moving part (14); the displacement sensor (12) is fixedly connected to the valve body (1) via the mounting plate (13); the valve body (1) is provided with a detection hole (104); the output end of the displacement sensor (12) passes through the detection hole (104) and is connected to the moving part (14); the moving part (14) is clamped between the piston part (4) and the valve body (1).

2. The clutch booster with displacement feedback function according to claim 1, characterized in that: A positioning rod (15) for opening the valve frame (7) is arranged in the shaft sleeve (3); the positioning rod (15) passes through the outer sleeve rod (6) and is located on one side of the valve frame (7); and the circular arc spring sheet (10) is arranged between the positioning rod (15) and the outer sleeve rod (6).

3. The clutch booster with displacement feedback function according to claim 2, characterized in that: The outer sleeve (6) is provided with a first side hole (105) connected to the air inlet (100), the shaft sleeve (3) is provided with a second side hole (106) connected to the first side hole (105), and the piston member (4) is provided with a force-bearing cavity (41) corresponding to the second side hole (106), and the force-bearing cavity (41) is distributed in a circumferential manner at the bottom of the piston member (4).

4. The clutch booster with displacement feedback function according to claim 3, characterized in that: The moving part (14) is provided with a threaded column (141) and a clamping groove (142); the moving part (14) is threadedly connected to the displacement sensor (12) via the threaded column (141); the piston part (4) is provided with a raised ring (42) matched with the clamping groove (142); the moving part (14) is clamped to the piston part (4) via the raised ring (42).

5. The clutch booster with displacement feedback function according to claim 4, characterized in that: The moving member (14) is provided with an arc surface (143) adapted to the inner wall of the valve body (1).

6. The clutch booster with displacement feedback function according to claim 5, characterized in that: A reinforcing rib (43) is provided between the upper surface of the piston member (4) and the raised ring (42).

7. The clutch booster with displacement feedback function according to claim 1, characterized in that: The piston member (4) is provided with a sealing sleeve (16) on one side of the raised ring (42); the piston member (4) is sealedly connected to the valve body (1) via the sealing sleeve (16); the valve body (1) is provided with threaded holes on both sides of the detection hole (104); the displacement sensor (12) is connected to the valve body (1) via the threaded holes; and a sealing ring (17) is provided between the displacement sensor (12) and the detection hole (104).

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