CN201206604Y - A kind of automobile clutch booster assembly - Google Patents

Abstract

The utility model discloses an automobile clutch booster assembly, which comprises a valve body, a booster cylinder, a booster cylinder piston and a push rod. There is an oil seal guide device at the connection between the body and the push rod. The oil seal guide device includes a leather cup and a guide sleeve that are connected to the push rod. Hold the cup, and the other side is against the hole fixed on the valve body to limit the cup and the guide sleeve with an elastic circlip. The utility model adopts the limit sleeve to support the leather cup, which replaces the traditional limit block and the spacer, has the advantages of simple assembly and reduces the cost of the product; in addition, the material of the booster cylinder piston assembly is made of plastic, and is fixed with the push rod by injection molding. Being connected into one body makes assembly easy, and at the same time enhances the wear resistance of the piston of the booster cylinder and reduces the cost of the product.

Description

A kind of automobile clutch booster assembly

technical field

The utility model relates to an automobile clutch control mechanism, in particular to an automobile clutch booster assembly.

Background technique

The automobile clutch booster assembly is set in the hydraulic control mechanism and shares a set of compressed air source with the air brake system and other pneumatic equipment. When the clutch pedal is stepped on, the force acting on the separation fork arm is increased through the air pressure booster, so that the clutch separation force is increased, thereby reducing the pedal force of the driver.

As shown in Figure 4, it is a structural schematic diagram of the oil seal guide device in the existing clutch booster assembly, including a leather cup 31 and a guide sleeve 32, the guide sleeve 32 is against the valve body 1, and the leather cup 31 passes through the limit block 11 and the gasket 12 hold against hole with circlip 33 and play the position-limiting effect of leather cup 31 and guide sleeve 32; Owing to adopt stop block 11 and pad 12 to support leather cup 31, make clutch booster assembly inconvenient to assemble. As shown in Figure 2, it is a schematic diagram of the connection structure of the booster cylinder piston 21 in the existing clutch booster assembly. The material of the booster cylinder piston 21 is made of aluminum, and the booster cylinder piston 21 needs to be sealed by a hex nut 13, a spring washer 14 and an O-shaped The ring 15 is used to connect the push rod 3, which is cumbersome to assemble, the wear resistance of aluminum is poor, the piston of the booster cylinder is easily damaged, and the performance is relatively unstable, and the cost of the product is relatively high.

Utility model content

The technical problem to be solved by the utility model is to provide an automobile clutch booster assembly, which can effectively solve the problem that the existing clutch booster assembly needs to use limit blocks and gaskets to support the cup, so that the clutch booster assembly can be assembled inconvenient problem.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: an automobile clutch booster assembly, including a valve body, a booster cylinder, a booster cylinder piston and a push rod, one end of the push rod is located in the booster cylinder and connected to the booster cylinder piston, The other end is connected to the valve body, and the connection between the valve body and the push rod is provided with an oil seal guide device, which is characterized in that: the oil seal guide device includes a leather cup and a guide sleeve connected to the push rod, and the guide sleeve is against the valve body. The leather cup is connected with the spacer sleeve, and one side of the spacer sleeve is against the leather cup, and the other side is against the hole fixed on the valve body to limit the leather cup and the guide sleeve with a circlip.

Further, the spacer sleeve is cylindrical and has a simple structure.

Furthermore, the limit sleeve is provided with a rib extending outward on one side of the elastic circlip for the hole, and the rib is against the elastic circlip for the hole. The setting of the rib can make the work of the limit sleeve more reliable.

Further, the side wall of the limit sleeve is provided with a through hole through which the oil can pass, so as to ensure the flow of the oil and increase the reliability of the brake.

Further, a double-port apron is provided between the guide sleeve and the valve body to seal the oil.

Further, the piston of the booster cylinder is made of plastic, the push rod is fixedly connected in the piston of the booster cylinder, and the push rod and the piston of the booster cylinder are connected as a whole.

Further, a cup is provided between the booster cylinder piston and the booster cylinder to seal the compressed air.

Further, a return spring is provided between the piston of the booster cylinder and the valve body, and the piston of the booster cylinder can return to its original position through the return spring after displacement occurs.

Compared with the existing clutch booster assembly structure, the utility model adopts the above-mentioned technical scheme, adopts the limit sleeve to support the cup, replaces the traditional limit block and gasket, has the advantages of simple assembly and reduces the cost of the product ;In addition, the piston assembly of the booster cylinder is made of plastic, which is fixed and integrated with the push rod by injection molding, replacing the traditional connection method of the aluminum booster cylinder piston and push rod with hexagonal nuts, spring washers and O-rings. The assembly is simple, and the wear resistance of the booster cylinder piston is also enhanced, the service life of the product is improved, the performance is stable, and the cost of the product is also reduced. The utility model is suitable for various passenger cars, medium and heavy trucks and special-purpose vehicles.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the structural representation of a kind of automobile clutch booster assembly of the utility model;

Fig. 2 is a schematic diagram of the connecting structure of the booster cylinder piston in the existing clutch booster assembly;

Fig. 3 is a schematic diagram of the connecting structure of the booster cylinder piston in the utility model;

Fig. 4 is a structural schematic diagram of the oil seal guide device in the existing clutch booster assembly;

Fig. 5 is a structural schematic diagram of the oil seal guide device in the utility model.

Detailed ways

As shown in Fig. 1, Fig. 3 and Fig. 5, it is a kind of automobile clutch booster assembly of the present utility model, comprises valve body 1, booster cylinder 2, booster cylinder piston 21 and push rod 3, booster cylinder piston 21 and booster cylinder There is a leather cup 22 between the 2 to seal the compressed air. A return spring 23 is provided between the piston 21 of the booster cylinder and the valve body 1. After the displacement of the piston 21 of the booster cylinder, the return spring 23 can return to the initial position. position, one end of the push rod 3 is located in the booster cylinder 2 and connected to the booster cylinder piston 21, the end of the push rod 3 is provided with a slot, the booster cylinder piston 21 is made of plastic, and the push rod 3 and the booster cylinder piston 21 are fixedly connected by injection molding. One piece, non-detachable, replacing the traditional aluminum booster cylinder piston and push rod with hex nut, spring washer, O-ring connection, which makes assembly easy, and also enhances the wear resistance of the booster cylinder piston and improves the product quality. The service life is long, the performance is stable, and the cost of the product is also reduced. The other end of the push rod 3 is connected in the valve body 1. An oil seal guide device is provided at the connection between the valve body 1 and the push rod 3. The oil seal guide device includes a leather cup 31 and a guide sleeve 32 connected on the push rod 3. The position cover 36 is cylindrical, and the limit cover 36 is provided with a rib 37 extending outward on one side of the circlip 33 for the hole. The rib 37 is against the circlip 33 for the hole, and the rib 37 can be set to limit The position sleeve 36 works more reliably, and the side wall of the limit sleeve 36 is provided with a through hole 34 for oil to pass through, which increases the braking reliability. A double-port apron 35 is provided between the guide sleeve 32 and the valve body 1, The guide sleeve 32 is against the valve body 1 through the double-port apron 35, and the leather cup 31 is connected with the limit sleeve 36. One side of the limit sleeve 36 is against the leather bowl 31, and the other side is against the hole fixed on the valve body 1. The elastic retaining ring 33 limits the position of the cup 31 and the guide sleeve 32, replacing the traditional limit block and gasket, which is easy to assemble and reduces the cost of the product.

The utility model work process is as follows:

When the clutch pedal is stepped on, the oil pressure is established in the cylinder of the brake master cylinder, and the oil pressure is sent to the oil inlet 4 of the booster. Part of the oil pushes the piston 5 of the working cylinder to move to the right, so that the push rod fork assembly 6 is connected with the clutch release yoke, and drives the clutch release fork shaft for braking; the other part of the oil pushes the relay piston assembly through the oil passage 7 8 moves to the right, thereby opening the valve 9, so that compressed air enters the booster cylinder 2, and pushes the piston 21 of the booster cylinder to move to the right, and the piston 21 of the booster cylinder drives the piston 5 of the working cylinder and the push rod fork assembly 6 to move to the right together through the push rod 3 , so that the force of clutch disengagement is increased, the pedal force of the clutch is greatly reduced, and it plays a role in boosting.

Claims (8)

1. An automobile clutch booster assembly, comprising a valve body (1), a booster cylinder (2), a booster cylinder piston (21) and a push rod (3), one end of the push rod (3) is located at the booster cylinder (2 ) and connected to the booster cylinder piston (21), the other end is pierced through the valve body (1), and an oil seal guide device is provided at the connection between the valve body (1) and the push rod (3), which is characterized in that : the oil seal guiding device includes a leather cup (31) and a guide sleeve (32) that are passed through the push rod (3), the guide sleeve (32) is against the valve body (1), and the leather cup (31) Connect the spacer sleeve (36), the side of the spacer sleeve (36) is against the leather cup (31), and the other side is against the hole fixed on the valve body (1) with the elastic retaining ring (33) Said leather cup (31) and guide sleeve (32) carry out spacing. 2. The automobile clutch booster assembly according to claim 1, characterized in that: the limit sleeve (36) is cylindrical. 3. The automobile clutch booster assembly according to claim 1 or 2, characterized in that: the limit sleeve (36) is provided with an outwardly extending rib ( 37), the rib (37) is against the hole with a circlip (33). 4. The automobile clutch booster assembly according to claim 2, characterized in that: a through hole (34) through which oil can pass is provided on the side wall of the limiting sleeve (36). 5. The automobile clutch booster assembly according to claim 1, characterized in that: a double-port apron (35) is provided between the guide sleeve (32) and the valve body (1). 6. The automobile clutch booster assembly according to claim 1, characterized in that: the booster cylinder piston (21) is made of plastic, and the push rod (3) is fixedly connected to the booster cylinder piston (21) Connected as one. 7. The automobile clutch booster assembly according to claim 1, characterized in that: a leather cup (22) is provided between the booster cylinder piston (21) and the booster cylinder (2). 8. The automobile clutch booster assembly according to claim 1, characterized in that: a return spring (23) is provided between the booster cylinder piston (21) and the valve body (1).

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