Clutching pump with automatic venting function

Abstract

The utility model relates to a kind of clutching pump with automatic exhaust function, belong to the technical field of automobile transmission.The exhaust interface is provided on the clutching pump body, the air release screw is installed in the exhaust interface, the air release screw is provided with air hole, for discharging the gas inside the clutching pump body.The rubber gasket is arranged between the cooperation end surface of the air release screw and the clutching pump body.The oil-proof air-permeable membrane is fixedly installed in the inner cavity of the air release screw.The oil-proof air-permeable membrane is ePTFE membrane.The utility model places ePTFE membrane in the air release screw and sets up air hole, realizes gas automatic discharge using hydraulic system self pressure, without repeatedly disassembling air release screw, simplifies exhaust procedure, improves exhaust efficiency, reduces operation difficulty;ePTFE membrane can effectively block hydraulic oil, avoid oil leakage in exhaust process.

Description

Technical Field

[0001] This invention relates to a clutch slave pump with automatic venting function, belonging to the field of automotive transmission technology. Background Technology

[0002] The clutch slave cylinder is an important component of the transmission clutch control system. One end of the clutch slave cylinder is connected to the oil pipe of the clutch master cylinder, and the other end is connected to the release arm. When the clutch pedal is engaged, the pedal force is transmitted from the clutch master cylinder to the clutch slave cylinder. The movement of the clutch slave cylinder causes the release arm to swing, thereby realizing the clutch disengagement and engagement functions.

[0003] The existing clutch slave cylinder only has a standard bleed screw and lacks an automatic bleed mechanism. Both initial installation and post-repair procedures require manual bleeding of the clutch slave cylinder and hydraulic system. Bleeding requires two people: one person inside the vehicle repeatedly depresses the clutch pedal to build hydraulic pressure, while the other person under the vehicle loosens the bleed screw to release the fuel-air mixture. Once no more air bubbles are visible, the screw is quickly tightened. This process needs to be repeated multiple times to complete the bleed operation.

[0004] The aforementioned venting methods are cumbersome to operate, require multiple people to coordinate, and have low work efficiency. Furthermore, improper timing of operation can easily leave residual air, affecting clutch performance, and can also easily cause oil leaks and contamination. Therefore, it is crucial to rationally design the clutch slave pump structure and optimize the venting method. Summary of the Invention

[0005] To address the problems existing in the background art, the present invention provides a clutch sub-pump with automatic venting function.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a clutch sub-pump with automatic venting function, comprising a clutch sub-pump body; the clutch sub-pump body is provided with an venting port, the venting port is installed with a vent screw, and the vent screw has a vent hole for venting gas inside the clutch sub-pump body.

[0007] Furthermore, a rubber gasket is provided between the vent screw and the mating end face of the clutch slave pump body.

[0008] Furthermore, an oil-proof and breathable membrane is fixedly installed in the internal cavity of the vent screw.

[0009] Furthermore, the oil-resistant and breathable membrane is an ePTFE membrane.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] This invention incorporates an ePTFE membrane with vent holes in the vent screw, allowing for automatic gas discharge using the hydraulic system's own pressure. This eliminates the need for repeated disassembly and reassembly of the vent screw, simplifying the venting process, improving venting efficiency, and reducing operational difficulty. The ePTFE membrane effectively blocks hydraulic oil, preventing oil leakage during venting. Rubber gaskets seal the fit gaps, preventing impurities from entering the pump. The overall structure requires minimal modification, is easy to assemble, and offers high reliability. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the vent screw;

[0014] Figure 3 yes Figure 2 A sectional view. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] A clutch sub-pump with automatic venting function includes a clutch sub-pump body 1; the clutch sub-pump body 1 is provided with a venting port, and a venting screw 101 is screwed into the venting port. The venting screw 101 has a vent hole 104 for venting gas inside the clutch sub-pump body 1.

[0017] Furthermore, a rubber gasket 102 is provided between the vent screw 101 and the mating end face of the clutch sub-pump body 1; after tightening the vent screw 101, the rubber gasket 102 is deformed by pressure, sealing the mating gap between the two and preventing small external impurities from entering the clutch sub-pump body 1.

[0018] Furthermore, an oil-proof and breathable membrane 103 is fixedly installed in the internal cavity of the vent screw 101. The oil-proof and breathable membrane 103 has the characteristics of being breathable and oil-blocking, allowing only gas to pass through, and can effectively prevent hydraulic oil leakage.

[0019] Furthermore, the oil-proof and breathable membrane 103 is an ePTFE (expanded polytetrafluoroethylene) membrane.

[0020] When the clutch slave pump completes its initial installation or when the oil circuit needs to be repaired and air needs to be bleed, the air in the clutch slave pump body 1 and the connecting oil circuit is collected at the bleed screw 101 under hydraulic pressure. The air passes through the oil-proof and breathable membrane 103 and is automatically discharged through the vent hole 104 of the bleed screw 101. The entire process does not require manual operation, and the bleed is efficient and convenient. At the same time, the oil-proof and breathable membrane 103 prevents oil leakage during the bleed process and ensures the normal use of the clutch slave pump.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A clutch slave pump with automatic venting function, characterized in that: It includes a clutch sub-pump body (1); the clutch sub-pump body (1) is provided with an exhaust port, and an air release screw (101) is installed in the exhaust port. The air release screw (101) has a vent hole (104) for discharging the gas inside the clutch sub-pump body (1).

2. A clutch slave pump with automatic venting function according to claim 1, characterized in that: A rubber gasket (102) is provided between the vent screw (101) and the mating end face of the clutch sub-pump body (1).

3. A clutch slave pump with automatic venting function according to claim 2, characterized in that: The internal cavity of the vent screw (101) is fixedly fitted with an oil-proof and breathable membrane (103).

4. A clutch slave pump with automatic venting function according to claim 3, characterized in that: The oil-proof and breathable membrane (103) is an ePTFE membrane.

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