Clutch booster with stable structure

Abstract

The clutch booster with the stable structure comprises a valve body, an end cover, a piston piece, a piston spring, an ejector rod assembly and a control assembly, the valve body is fixedly connected with the end cover, and the valve body is provided with a hydraulic cavity, an air pressure cavity, an oil inlet channel communicated with the hydraulic cavity and an air inlet channel communicated with the air pressure cavity. The piston piece comprises a sealing part, a conical part and a piston part which are sequentially distributed from top to bottom; according to the clutch booster, a piston, an oil plunger and a sealing piece in a traditional clutch booster are integrated into the piston piece, the sealing part replaces the hydraulic transmission function of an original oil plunger, the piston part replaces the pneumatic transmission function of an original piston, and the structural strength of the piston piece is improved through the conical part; fasteners such as clamp springs and nuts are not needed when the piston part is mounted, so that the overall mounting process is reduced, and the transmission structure is more stable.

Description

Technical Field

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

[0002] A clutch booster is a device that uses gas assistance to achieve clutch separation and engagement. It is commonly used in clutch control systems in the commercial vehicle industry. However, traditional clutch boosters have too many parts, resulting in too many installation processes and reduced production efficiency. For example, patent number CN202120598211.5 discloses an internal exhaust clutch booster, in which the plunger and gas piston are connected by fasteners such as nuts, which has the risk of loosening, causing clutch structure failure and posing a driving safety hazard. 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 a stable structure, including a valve body, an end cover, a piston part, a piston spring, a push rod assembly and a control assembly, the valve body is fixedly connected with the end cover, the valve body is provided with a hydraulic chamber and a pneumatic chamber, and an oil inlet passage connected to the hydraulic chamber, and an air inlet passage connected to the air pressure chamber, the piston part includes a sealing part, a conical part and a piston part distributed in sequence from top to bottom, the sealing part is sealed and connected to the hydraulic chamber, the conical part is sleeved with a piston spring, the piston part is slidably connected to the air pressure chamber, and a push rod assembly is clamped at the center of the piston part, and the air inlet passage is connected to a control assembly for controlling the movement of the piston part.

[0004] By adopting the above technical solution, the piston, oil plunger and seal in the traditional clutch booster are integrated into the piston part. The sealing part replaces the hydraulic transmission function of the original oil plunger, and the piston part replaces the original pneumatic transmission function of the piston. The structural strength of the piston part is improved by the conical part. When installing the piston part, no fasteners such as retaining rings and nuts are required, which reduces the overall installation process and makes the transmission structure more stable.

[0005] The utility model is further configured that the push rod assembly includes a buffer pad, a universal shaft sleeve and a push rod distributed in sequence from top to bottom, the piston part is provided with a mounting groove adapted to the universal shaft sleeve, and the push rod is connected to the piston part through the universal shaft sleeve.

[0006] Furthermore, a sealing sleeve is provided between the piston part and the valve body, the conical part is provided with a ventilation groove connected to the mounting groove, the universal shaft sleeve is abutted against the ventilation groove through a buffer pad, the sealing part is provided with two sealing rings, and the sealing part is provided with a ventilation hole connected to the ventilation groove between the two sealing rings.

[0007] Furthermore, the push rod assembly also includes a dust cover, and two ends of the dust cover are respectively clamped to the end cover and the push rod.

[0008] By adopting the above technical solution, a ball head is provided at the top of the push rod, and is clamped in the universal shaft sleeve through the ball head to compensate for the installation error of the push rod, improve the stability of the structure, balance the air pressure between the sealing part and the valve body through the air vent, and avoid oil leakage caused by deformation of the sealing ring.

[0009] The utility model is further configured as follows: the control component includes a valve sleeve, an interface sleeve, a valve frame, a spring seat, a secondary spring, a main spring and a plunger; the valve sleeve is fixedly connected to the air intake duct through the interface sleeve; the valve sleeve is fixedly connected to the spring seat; the valve frame is slidably connected between the valve sleeve and the spring seat; a secondary spring is provided between the valve frame and the spring seat; the valve body is provided with a plunger corresponding to the valve frame; the main spring is provided between the valve column and the plunger; and the valve sleeve is provided with a through hole between the plunger and the valve frame.

[0010] Furthermore, the valve body is provided with threaded holes on both sides of the air inlet, the valve sleeve and the interface sleeve are provided with a first mounting portion and a second mounting portion corresponding to the threaded holes, and the second mounting portion is provided with a connecting groove for clamping a spring seat.

[0011] Furthermore, the spring seat is provided with a connecting column and positioning strips circumferentially distributed around the connecting column, the valve frame is slidably connected to the connecting column, and the auxiliary spring is arranged between the positioning strip and the valve frame.

[0012] Furthermore, a valve rubber pad is provided on the side of the valve frame facing the plunger.

[0013] By adopting the above technical solution, the interface sleeve is used to connect the quick-connect connector, and the valve sleeve seat and the interface sleeve are threadedly connected to the air inlet of the valve body through screws. When the driver steps on the pedal, the plunger is pushed to move in the direction of the valve skeleton, and the plunger passes through the through hole to press the valve skeleton downward, so that the main spring and the auxiliary spring are compressed, and the channel between the air inlet and the air pressure chamber is opened, so that the air pressure system assists the piston output; conversely, when the pedal is released, the plunger and the valve skeleton are reset under the action of the main spring and the auxiliary spring. The overall structure is simple and easy to operate.

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

[0015] The sealing part replaces the hydraulic transmission function of the original oil plunger, and the piston part replaces the original piston pneumatic transmission function. The structural strength of the piston is improved by the conical part. When installing the piston part, no fasteners such as retaining rings and nuts are required, which reduces the overall installation process and makes the transmission structure more stable.

[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 cross-sectional view of the utility model;

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

[0019] Figure 3 For the utility model Figure 1 A partial enlarged view of the A-direction view;

[0020] Figure 4 For the utility model Figure 1 A partial enlarged view of the B direction view;

[0021] Figure 5 It is a structural exploded diagram of the control component of the utility model;

[0022] Among them: 1-valve body, 2-end cover, 3-piston, 4-piston spring, 5-rod assembly, 6-control assembly, 7-sealing sleeve, 8-sealing ring, 31-sealing part, 32-conical part, 33-piston part, 34-mounting groove, 35-ventilation groove, 36-ventilation hole, 51-buffer pad, 52-universal shaft sleeve, 53-rod, 54-dust cover, 61-valve sleeve, 611-first mounting part, 612-through hole, 62-interface sleeve, 621-second mounting part, 63-valve frame, 64-spring seat, 641-connecting column, 642-positioning strip, 65-auxiliary spring, 66-main spring, 67-plunger, 68-valve rubber pad, 101-hydraulic chamber, 102-air pressure chamber, 103-oil inlet, 104-inlet; DETAILED DESCRIPTION

[0023] like Figure 1 , 2 As shown, this embodiment provides a clutch booster with stable structure, including a valve body 1, an end cover 2, a piston member 3, a piston spring 4, a push rod assembly 5 and a control assembly 6. The valve body 1 is bolted with the end cover 2, and a hydraulic chamber 101 and a pneumatic chamber 102 are formed in the valve body 1, as well as an oil inlet 103 connected to the hydraulic chamber 101, and an air inlet 104 connected to the air pressure chamber 102. The piston member 3 includes a sealing portion 31, a conical portion 32 and a piston portion 33 distributed in sequence from top to bottom. The sealing portion 31 is sealed and connected to the hydraulic chamber 101, the conical portion 32 is sleeved with a piston spring 4, and the piston spring 4 is arranged between the valve body 1 and the piston portion 33. The piston portion 33 is slidably connected to the pneumatic chamber 102, and the push rod assembly 5 is clamped at the center of the piston portion 33. The air inlet 104 is connected to a control assembly 6 for controlling the movement of the piston member 3.

[0024] Combination Figure 3As shown, in this embodiment, the push rod assembly 5 includes a buffer pad 51, a universal shaft sleeve 52 and a push rod 53 which are distributed in sequence from top to bottom. The piston part 33 is provided with a mounting groove 34 adapted to the universal shaft sleeve 52. A ball head is provided on the top of the push rod 53 and is clamped in the universal shaft sleeve 52 through the ball head. The push rod 53 is connected to the piston member 3 through the universal shaft sleeve 52. A sealing sleeve 7 is provided between the piston part 33 and the valve body 1. The conical part 32 is provided with a venting groove 35 connected to the mounting groove 34. The universal shaft sleeve 52 abuts against the venting groove 35 through the buffer pad 51. The sealing part 31 is provided with two sealing rings 8, and the sealing part 31 is provided with a venting hole 36 connected to the venting groove 35 between the two sealing rings 8. The push rod assembly 5 also includes a dust cover 54. The two ends of the dust cover 54 are respectively clamped to the end cover 2 and the push rod 53.

[0025] Combination Figure 4 , 5 As shown, in this embodiment, the control component 6 includes a valve sleeve 61, an interface sleeve 62, a valve frame 63, a spring seat 64, a secondary spring 65, a main spring 66 and a plunger 67. The valve body 1 is provided with threaded holes on both sides of the air inlet 104. The valve sleeve 61 and the interface sleeve 62 are provided with a first mounting portion 611 and a second mounting portion 621 corresponding to the threaded holes. The screw passes through the second mounting portion 621 and the first mounting portion 611 and is threadedly connected to the threaded hole, and the valve sleeve 61, the spring seat 64 and the interface sleeve 62 are fixed to the air inlet in sequence. In the channel 104, the spring seat 64 is provided with a connecting column 641, and positioning strips 642 circumferentially distributed around the connecting column 641, the valve skeleton 63 is slidably connected to the connecting column 641, and a secondary spring 65 is provided between the positioning strip 642 and the valve skeleton 63, the valve body 1 is provided with a plunger 67 corresponding to the valve skeleton 63, the main spring 66 is provided between the valve column and the plunger 67, the valve sleeve 61 is provided with a through hole 612 between the plunger 67 and the valve skeleton 63, and a valve rubber pad 68 is provided on the side of the valve skeleton 63 facing the plunger 67.

[0026] The working principle of the utility model is that when the driver steps on the pedal, the hydraulic system of the oil inlet channel 103 pushes the piston member 3 to move axially in the direction of the push rod 53, and at the same time pushes the plunger 67 to move in the direction of the valve skeleton 63, and the plunger 67 passes through the through hole 612 to press the valve skeleton 63 downward, so that the main spring 66 and the auxiliary spring 65 are compressed, and the passage between the air inlet channel 104 and the air pressure chamber 102 is opened, so that the air pressure system assists the hydraulic system to control the output of the piston member 3; conversely, when the pedal is released, the plunger 67 and the valve skeleton 63 are reset under the action of the main spring 66 and the auxiliary spring 65, and the passage between the air inlet channel 104 and the air pressure chamber 102 is disconnected through the valve skeleton 63, at this time the push rod 53 and the piston member 3 are reset, and the overall structure is easy to operate and the transmission is stable.

[0027] 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 a stable structure, characterized in that: The invention comprises a valve body (1), an end cover (2), a piston member (3), a piston spring (4), a push rod assembly (5) and a control assembly (6); the valve body (1) is fixedly connected to the end cover (2); the valve body (1) is provided with a hydraulic chamber (101) and a gas pressure chamber (102), an oil inlet passage (103) connected to the hydraulic chamber (101), and an air inlet passage (104) connected to the air pressure chamber (102); the piston member (3) comprises a sealing portion (31), a conical portion (32) and a piston portion (33) which are sequentially arranged from top to bottom; the sealing portion (31) is sealingly connected to the hydraulic chamber (101); the conical portion (32) is sleeved with a piston spring (4); the piston portion (33) is slidably connected to the gas pressure chamber (102); the push rod assembly (5) is clamped at the center of the piston portion (33); and the air inlet passage (104) is connected to a control assembly (6) for controlling the movement of the piston member (3).

2. A clutch booster with a stable structure according to claim 1, characterized in that: The push rod assembly (5) comprises a buffer pad (51), a universal shaft sleeve (52) and a push rod (53) which are sequentially arranged from top to bottom; the piston part (33) is provided with a mounting groove (34) which is matched with the universal shaft sleeve (52); and the push rod (53) is connected to the piston part (3) via the universal shaft sleeve (52).

3. A clutch booster with a stable structure according to claim 2, characterized in that: A sealing sleeve (7) is provided between the piston portion (33) and the valve body (1); the conical portion (32) is provided with a venting groove (35) connected to the mounting groove (34); the universal shaft sleeve (52) abuts against the venting groove (35) via a buffer pad (51); the sealing portion (31) is provided with two sealing rings (8); and the sealing portion (31) is provided with a venting hole (36) connected to the venting groove (35) between the two sealing rings (8).

4. A clutch booster with a stable structure according to claim 3, characterized in that: The push rod assembly (5) also includes a dust cover (54), and the two ends of the dust cover (54) are respectively clamped to the end cover (2) and the push rod (53).

5. A clutch booster with a stable structure according to claim 1, characterized in that: The control component (6) comprises a valve sleeve (61), an interface sleeve (62), a valve frame (63), a spring seat (64), an auxiliary spring (65), a main spring (66) and a plunger (67); the valve sleeve (61) is fixedly connected to the intake duct (104) through the interface sleeve (62); the valve sleeve (61) is fixedly connected to the spring seat (64); the valve frame (63) is slidably connected between the valve sleeve (61) and the spring seat (64); an auxiliary spring (65) is provided between the valve frame (63) and the spring seat (64); the valve body (1) is provided with a plunger (67) corresponding to the valve frame (63); the main spring (66) is provided between the valve column and the plunger (67); and the valve sleeve (61) is provided with a through hole (612) between the plunger (67) and the valve frame (63).

6. A clutch booster with a stable structure according to claim 5, characterized in that: The valve body (1) is provided with threaded holes on both sides of the air inlet passage (104); the valve sleeve (61) and the interface sleeve (62) are provided with a first mounting portion (611) and a second mounting portion (621) corresponding to the threaded holes; the second mounting portion (621) is provided with a connecting groove for clamping the spring seat (64).

7. A clutch booster with a stable structure according to claim 6, characterized in that: The spring seat (64) is provided with a connecting column (641) and positioning strips (642) circumferentially distributed around the connecting column (641); the valve frame (63) is slidably connected to the connecting column (641); and the auxiliary spring (65) is provided between the positioning strips (642) and the valve frame (63).

8. A clutch booster with a stable structure according to claim 7, characterized in that: A valve rubber pad (68) is provided on the side of the valve frame (63) facing the plunger (67).

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