Clutch booster

Abstract

The utility model discloses a clutch booster, which relates to the field of automobile accessories. The technical solution thereof is as follows: it comprises a booster body composed of a die-cast valve body and a stamped cylinder, the die-cast valve body and the stamped cylinder are integrally formed, an inner hole for a piston rod to pass through is provided in the booster body, a thread is provided on the inner wall of the inner hole, and the thread is arranged at the part of the inner hole located at the die-cast valve body. The utility model reduces the instability caused by the sealing of the intermediate connecting part between the die-cast valve body and the stamped cylinder by integrally forming the die-cast valve body and the stamped cylinder, thereby ensuring the sealing of the booster body, and because of the integral forming, it can be clamped at one time during processing, which greatly ensures the concentricity of the inner hole and improves the accuracy of the booster body. The aluminum alloy has the characteristics of high strength, which ensures the overall strength and life of the clutch body.

Description

Technical Field

[0001] The utility model relates to the field of automobile accessories, and more specifically, to a clutch booster. Background Art

[0002] The function of the clutch booster is to help increase the output force to facilitate the driver to control the car. It is mainly used in models with hydraulically operated clutch mechanisms. Therefore, the clutch booster is a relatively important part in the car.

[0003] like Figure 1 and Figure 2 As shown, in the prior art, the clutch booster includes a die-cast valve body 1 and a stamped cylinder 2, which are assembled together by screw fastening. The die-cast valve body 1 and the stamped cylinder 2 are both provided with an inner hole 4. During the assembly process, the inner holes 4 on the two components need to be aligned, and then screws are used to fasten them. After fastening, the two ends of an air pipe 13 are respectively installed on the die-cast valve body 1 and the stamped cylinder 2. During the assembly process, the relay piston 11, the piston rod 10 and other components are installed in the clutch booster, wherein the piston rod 10 needs to be connected with the help of a guide sleeve, which is fixedly connected to the inner hole 4, and the piston rod 10 is slidably connected to the inner hole 4 by passing through the guide sleeve.

[0004] However, there will be gas in the stamping cylinder during use. In order to prevent gas leakage, the connection between the two must be sealed. The use of screws to tighten the connection makes the sealing between the two not particularly stable.

[0005] Therefore, new solutions need to be proposed to solve this problem. Utility Model Content

[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a clutch booster.

[0007] The above technical purpose of the utility model is achieved through the following technical scheme: a clutch booster, including a booster body composed of a die-cast valve body and a stamped cylinder, the die-cast valve body and the stamped cylinder are integrally formed, an inner hole for a piston rod to pass through is opened in the booster body, a thread is opened on the inner wall of the inner hole, and the thread is arranged on the part of the inner hole located in the die-cast valve body.

[0008] The utility model is further configured as follows: a mounting groove for mounting a relay piston is provided on the die-cast valve body, and there are two passages connecting the mounting groove with the inside of the stamping cylinder.

[0009] The utility model is further configured as follows: the two channels are respectively air channel one and air channel two, the air channel one is connected to a side of the stamping cylinder close to the die-casting valve body, and the air channel two is connected to a side of the stamping cylinder away from the die-casting valve body.

[0010] The utility model is further configured as follows: the number of openings arranged at one end of the air passage opposite to the mounting groove is two, one of the openings is communicated with the inside of the stamping cylinder, and the other opening is directly communicated with the outside.

[0011] The utility model is further configured as follows: the length of the second airway is greater than the length of the stamping cylinder.

[0012] The utility model is further configured as follows: the booster body is made of aluminum alloy.

[0013] In summary, the utility model has the following beneficial effects: the die-cast valve body and the stamped cylinder are combined together in an integrally formed manner, and this arrangement reduces the instability caused by the sealing of the intermediate connecting part between the two. There is no gap between the two, so that the booster body always remains in a sealed state. Because of the integral molding, it can be clamped once during processing, which greatly guarantees the concentricity of the inner hole and improves the accuracy of the booster body. In the process of assembling the clutch booster, it is no longer necessary to connect the die-cast valve body and the stamped cylinder, making the process of assembling the clutch booster more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of a die-cast valve body and a stamped cylinder in the prior art;

[0015] Figure 2 It is a cross-sectional view of a die-cast valve body and a stamped cylinder combined in the prior art;

[0016] Figure 3 It is a cross-sectional view of the booster body in the utility model.

[0017] In the figure: 1. Die-cast valve body; 2. Stamping cylinder; 3. Booster body; 4. Inner hole; 5. Thread; 6. Mounting groove; 7. Air channel 1; 8. Air channel 2; 9. Opening; 10. Piston rod; 11. Relay piston; 12. Clutch master cylinder; 13. Air pipe. DETAILED DESCRIPTION

[0018] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Clutch booster, such as Figure 3As shown, it includes a booster body 3 composed of a die-cast valve body 1 and a stamped cylinder 2. The die-cast valve body 1 and the stamped cylinder 2 are integrally formed. An inner hole 4 for the piston rod 10 to pass through is opened in the booster body 3. A thread 5 is opened on the inner wall of the inner hole 4. The thread 5 is arranged at the part of the inner hole 4 located at the die-cast valve body 1. The die-cast valve body 1 and the stamped cylinder 2 are combined together in an integrally formed manner. This arrangement reduces the instability caused by the sealing of the intermediate connection part between the two. There is no gap between the two, so that the booster body 3 always maintains a sealed state. Because of the integral molding, it can be processed One-time clamping greatly ensures the concentricity of the inner hole 4 and improves the accuracy of the booster body 3. In the process of assembling the booster body 3, it is no longer necessary to connect the die-cast valve body 1 and the stamped cylinder 2, making the process of assembling the clutch booster more convenient. The installation of the piston rod 10 requires the assistance of a guide sleeve for connection. In order to ensure the sealing of the piston rod 10 when it moves, the setting of the thread 5 makes it easy for people to thread the guide sleeve into the inner hole 4, which facilitates the installation of the guide sleeve. The piston rod 10 is slidably connected to the inner hole 4 through the guide sleeve. The setting of the thread 5 makes it easy for people to assemble the booster body 3.

[0020] like Figure 3As shown, the die-cast valve body 1 is provided with a mounting groove 6 for mounting a relay piston 11. There are two channels connecting the mounting groove 6 with the inside of the stamping cylinder 2, namely, air channel 1 7 and air channel 2 8. Air channel 1 7 is connected with the side of the stamping cylinder 2 close to the die-casting valve body 1, and air channel 2 8 is connected with the side of the stamping cylinder 2 away from the die-casting valve body 1. There are two openings 9 arranged at one end of the air channel 2 8 facing away from the mounting groove 6, one opening 9 is connected with the inside of the stamping cylinder 2, and the other opening 9 is directly connected with the outside. The opening 9 at the other end of the air passage 8 is connected to the inside of the die-cast valve body 1. The length of the air passage 8 is greater than the length of the stamping cylinder 2. The end of the die-cast valve body 1 facing away from the stamping cylinder 2 is used to connect the clutch master pump 12. The die-cast valve body 1 is connected with an air reservoir. When the master pump pedal is pressed, the oil pressure generated by the clutch master pump 12 pushes the piston rod 10 forward and acts on the relay piston 11 at the same time. The relay piston 11 opens to allow the gas in the air reservoir to flow into the stamping cylinder 2 along the air passage 8. The gas in the air reservoir pushes the piston The rod 10 moves forward, and the clutch booster starts to work. When the master pump pedal is released, the oil pressure generated by the clutch master pump 12 is unloaded, and the relay piston 11 is closed. The gas in the stamping cylinder 2 enters the installation groove 6 along the air channel 1 7, and then enters the stamping cylinder 2 along the air channel 2 8 from the installation groove 6. At this time, the air pressure pushes the piston rod 10 to move forward toward the die-cast valve body 1, so that the booster body 3 stops working. When people need to unload the air pressure of the stamping cylinder 2, they can open the switch connecting the air channel 2 8 to the outside. Port 9 allows the gas to be unloaded from the ram cylinder 2. During this process, the air duct 1 7 and the air duct 2 8 are integrally formed in the booster body 3. In the prior art, the air duct 2 8 is installed outside the air pipe 13. Therefore, in the utility model, the overall air tightness of the air duct 2 8 is relatively strong, which ensures the overall working efficiency of the booster body 3. The booster body 3 is made of aluminum alloy, and the overall strength of the aluminum alloy is relatively high, which ensures the overall strength of the booster body 3 and prolongs the service life of the booster as a whole.

[0021] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A clutch booster, comprising a booster body (3) consisting of a die-cast valve body (1) and a stamped cylinder (2), characterized in that: The die-cast valve body (1) and the stamping cylinder (2) are integrally formed, an inner hole (4) for the piston rod (10) to pass through is provided in the booster body (3), a thread (5) is provided on the inner wall of the inner hole (4), and the thread (5) is arranged on the portion of the inner hole (4) located at the die-cast valve body (1).

2. The clutch booster according to claim 1, characterized in that: The die-cast valve body (1) is provided with a mounting groove (6) for mounting a relay piston (11), and the mounting groove (6) has two passages communicating with the inside of the stamping cylinder (2).

3. The clutch booster according to claim 2, characterized in that: The two passages are respectively air passage one (7) and air passage two (8); the air passage one (7) is connected to a side of the stamping cylinder (2) close to the die-casting valve body (1), and the air passage two (8) is connected to a side of the stamping cylinder (2) away from the die-casting valve body (1).

4. The clutch booster according to claim 3, characterized in that: The number of openings (9) provided at one end of the second air passage (8) facing away from the mounting groove (6) is two, one of the openings (9) is connected to the inside of the stamping cylinder (2), and the other opening (9) is directly connected to the outside.

5. The clutch booster according to claim 4, characterized in that: The length of the second air passage (8) is greater than the length of the punching cylinder (2).

6. The clutch booster according to claim 1, characterized in that: The booster body (3) is made of aluminum alloy.

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