Air inlet valve structure of clutch booster

Abstract

The air inlet valve structure of the clutch booster comprises a valve body, an air inlet channel is arranged in the valve body in the axial direction of the valve body, the front end of the air inlet channel is an air outlet, the rear end of the air inlet channel is a first air inlet, a second air inlet is formed in the side wall of the valve body in the radial direction of the valve body, and a movable sleeve capable of moving in the axial direction is arranged in the valve body. The movable sleeve and the inner wall of the air inlet channel are arranged in a spaced mode, an air inlet hole is formed in the side wall of the movable sleeve, a movable sealing column capable of axially moving is arranged in the movable sleeve, and the movable sealing column can be in sealing fit with the valve bodies at the two axial ends of the movable sleeve. When gas enters the gas outlet in the front end of the gas inlet channel, when the gas inlet channel needs to be closed, gas enters the second gas inlet, gas enters the first gas inlet, the movable sealing column moves towards the front end of the gas inlet channel, and the gas outlet in the front end of the gas inlet channel is closed, the gas inlet active closing type structure does not generate delay, and gas inlet can be immediately closed.

Description

Technical Field

[0001] The utility model relates to the technical field of air intake valves, in particular to an air intake valve structure of a clutch booster. Background Art

[0002] When the clutch needs to be disengaged or engaged, a clutch booster is usually used to help the driver increase the output force, and the clutch booster is controlled by the driver stepping on the clutch pedal. When the driver steps on the clutch pedal, boost oil and compressed air enter the booster, and the hydraulic and air pressures act on the piston on the piston rod together, pushing the actuator rod to assist the clutch.

[0003] In the prior art, a patent with a patent authorization announcement number of CN 220134479 U discloses an intake valve structure of a flow-adjustable clutch booster, in which the valve core is closed under the action of a spring. This structure that relies on the elastic force of the spring to close will cause a problem of closing delay due to the presence of a small intake air source at the intake end. Utility Model Content

[0004] In view of the problems pointed out in the background technology, the utility model proposes an intake valve structure of a clutch booster to solve the above technical problems.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A clutch booster intake valve structure includes a valve body, an intake passage is arranged in the valve body along its axial direction, the front end of the intake passage is an air outlet, the rear end of the intake passage is a first air inlet, a second air inlet is arranged in the radial direction on the side wall of the valve body, an axially movable sleeve is arranged in the valve body, the movable sleeve is spaced apart from the inner wall of the intake passage, an intake hole is arranged on the side wall of the movable sleeve, an axially movable movable sealing column is arranged inside the movable sleeve, and the movable sealing column can cooperate with the valve body at both axial ends of the movable sleeve in a sealing manner.

[0007] The utility model is further configured such that the air intake passage is composed of two sections, which are respectively a first air intake passage and a second air intake passage from front to back, the diameter of the first air intake passage is smaller than the diameter of the second air intake passage, a screw plug is connected to the rear end of the second air intake passage, a movable sleeve is arranged on the inner side of the second air intake passage, a first guide sleeve extending into the movable sleeve is arranged at the front end of the screw plug, a second guide sleeve extending into the movable sleeve is arranged at the front end of the second air intake passage, and a movable sealing column can abut against the first guide sleeve and the second guide sleeve to form a sealing fit.

[0008] The utility model is further configured that an annular pushing ring is provided on the outer side wall of the rear end of the movable sleeve.

[0009] The utility model is further configured that the movable sealing column is made of rubber material.

[0010] The utility model is further configured that the screw plug is annular, and a sealing ring is provided between the screw plug and the air inlet passage.

[0011] The utility model is further configured that the air outlet of the air inlet channel is connected with an air pipe.

[0012] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0013] The utility model provides an intake valve structure for a clutch booster, in which, when taking in air, gas enters the second air inlet, the movable sealing column moves to the rear end of the air inlet passage, and the gas enters the front end air outlet of the air inlet passage; when closing is required, the second air inlet stops taking in air, and the first air inlet takes in air, the movable sealing column moves to the front end of the air inlet passage, and closes the front end air outlet of the air inlet passage; this air intake active closing structure will not cause delay and can immediately close the air intake. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a structural schematic diagram of the clutch booster of the utility model.

[0016] Figure 2 It is a structural schematic diagram of the intake valve of the utility model.

[0017] Figure 3 It is a cross-sectional view of the intake valve of the utility model. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] For reference Figure 1-3 The utility model is described as follows:

[0020] Embodiment 1: An intake valve structure of a clutch booster includes a valve body 1, an intake channel is provided in the valve body 1 along its axial direction, the front end of the intake channel is an outlet 21, the outlet 21 of the intake channel is connected to the air pipe 9, the rear end of the intake channel is a first intake port 22, the intake channel is composed of two sections, the two sections of the intake channel are respectively a first intake channel 24 and a second intake channel 25 from front to back, and the diameter of the first intake channel 24 is smaller than the diameter of the second intake channel 25.

[0021] The rear end of the second air inlet passage 25 is threadedly connected with a screw plug 5 , which is annular in shape. The front end of the screw plug 5 extends into the second air inlet passage 25 and is threadedly connected with the second air inlet passage 25 . A sealing ring is provided between the screw plug 5 and the second air inlet passage 25 .

[0022] An axially movable sleeve 3 is provided in the second air inlet channel 25. The movable sleeve 3 is spaced apart from the inner wall of the second air inlet channel 25. The movable sleeve 3 is tubular. An air inlet hole 31 is provided on the side wall of the movable sleeve 3. A plurality of air inlet holes 31 are provided. The plurality of air inlet holes 31 are spaced apart in the circumferential direction of the movable sleeve 3. An annular pushing ring 8 is provided on the outer side wall at the rear end of the movable sleeve 3. A first guide sleeve 6 extending into the movable sleeve 3 is provided at the front end of the screw plug 5. A second guide sleeve 7 extending into the movable sleeve 3 is provided at the front end of the second air inlet channel 25. The outer diameters of the first guide sleeve 6 and the second guide sleeve 7 are equal to the inner diameter of the movable sleeve 3. The movable sleeve 3 can move axially. The first guide sleeve 6 and the second guide sleeve 7 serve to guide the axial movement of the movable sleeve 3.

[0023] An axially movable sealing column 4 is provided inside the movable sleeve 3. The movable sealing column 4 is a cylindrical structure. The diameter of the movable sealing column 4 is equal to the inner diameter of the movable sleeve 3. The movable sealing column 4 is made of rubber material. The movable sealing column 4 can abut against the end faces of the first guide sleeve 6 and the second guide sleeve 7 to form a sealing fit.

[0024] A second air inlet 23 is provided on the side wall of the valve body 1 along its radial direction.

[0025] The first air inlet 22, the air outlet 21, the first air inlet passage 24, the second air inlet passage 25, the movable sleeve 3, the screw plug 5, the movable sealing column 4, the first guide sleeve 6, and the second guide sleeve 7 are coaxially arranged.

[0026] By adopting the above technical solution, when the second air inlet 23 is inletting air, the first air inlet 22 is closed, and air enters between the inner wall of the second air inlet passage 25 and the movable sleeve 3. The air acts on the push ring 8 to move the movable sleeve 3 to the rear end, and the air enters the movable sleeve 3 from the front end and the air inlet hole 31 of the movable sleeve 3, pushing the movable sealing column 4 to move backward, and the air is discharged from the front end of the air outlet 21. When it is necessary to close the air intake, the second air inlet 23 is closed, the first air inlet 22 is inlet, and the air directly enters the movable sleeve 3, pushing the movable sealing column 4 to move forward, and closing the air outlet 21.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intake valve structure of a clutch booster, comprising a valve body (1), wherein an intake passage is provided in the valve body (1) along its axial direction, wherein the front end of the intake passage is an air outlet (21), and the rear end of the intake passage is a first air inlet (22), wherein: A second air inlet (23) is provided on the side wall of the valve body (1) along its radial direction, an axially movable sleeve (3) is provided inside the valve body (1), the movable sleeve (3) is spaced apart from the inner wall of the air inlet passage, an air inlet hole (31) is provided on the side wall of the movable sleeve (3), an axially movable movable sealing column (4) is provided inside the movable sleeve (3), and the movable sealing column (4) can be sealed with the valve body (1) at both axial ends of the movable sleeve (3).

2. The intake valve structure of a clutch booster according to claim 1, characterized in that: The air intake passage is composed of two sections, which are respectively a first air intake passage (24) and a second air intake passage (25) from front to back. The diameter of the first air intake passage (24) is smaller than the diameter of the second air intake passage (25). The rear end of the second air intake passage (25) is connected with a screw plug (5). The movable sleeve (3) is arranged on the inner side of the second air intake passage (25). The front end of the screw plug (5) is provided with a first guide sleeve (6) extending into the movable sleeve (3). The front end of the second air intake passage (25) is provided with a second guide sleeve (7) extending into the movable sleeve (3). The movable sealing column (4) can abut against the first guide sleeve (6) and the second guide sleeve (7) to form a sealing fit.

3. The intake valve structure of a clutch booster according to claim 1, characterized in that: An annular pushing ring (8) is provided on the outer side wall of the rear end of the movable sleeve (3).

4. The intake valve structure of a clutch booster according to claim 1, characterized in that: The movable sealing column (4) is made of rubber material.

5. The intake valve structure of a clutch booster according to claim 2, characterized in that: The screw plug (5) is annular, and a sealing ring is provided between the screw plug (5) and the air inlet passage.

6. The intake valve structure of a clutch booster according to claim 1, characterized in that: The air outlet (21) of the air inlet channel is connected to an air pipe (9).

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