Exhaust structure on clutch booster

Abstract

The utility model provides an exhaust structure on a clutch booster, which comprises a cylinder body, an exhaust hole is arranged on the cylinder body, an exhaust valve is arranged in the exhaust hole, the exhaust valve comprises a valve body, the valve body is arranged in the exhaust hole, a through hole penetrating through two axial sides of the valve body is arranged in the valve body, and the through hole is communicated with the exhaust hole. The outer end of the valve body is fixedly connected with a bonnet, a valve element and a spring are arranged in the bonnet, the valve element is in sealing fit with the air outlet end of the valve body, one end of the spring abuts against the valve element, and the other end of the spring abuts against the bonnet. When the pressure in the cylinder body is too large, the valve can be automatically opened for exhausting, the opening degree can be controlled, the valve can also be directly opened for exhausting, the movement of the valve element is stable and reliable, and the fixation of the valve bonnet is safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile clutch boosters, in particular to an exhaust structure on a clutch booster. Background Art

[0002] The structure of an existing cylinder front-mounted automobile clutch booster includes a housing, a main oil cylinder and a lower oil cylinder arranged in the housing, an isolation chamber arranged between the main oil cylinder and the lower oil cylinder, a cylinder fixedly connected to the housing by screws, a ball head push rod of a push rod fork assembly connected to a main piston arranged in the main oil cylinder, a support ring and a sealing ring arranged in sequence on the inner wall of the cavity of the main oil cylinder at the connection between the housing and the cylinder, and an air venting hole arranged on the side wall of the main oil cylinder.

[0003] An exhaust valve will be set at the vent hole, through which the air in the cylinder can be discharged. However, how to design the structure of the exhaust valve is an issue that needs to be considered. Utility Model Content

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

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

[0006] An exhaust structure on a clutch booster includes a cylinder body, an exhaust hole is provided on the cylinder body, an exhaust valve is provided in the exhaust hole, the exhaust valve includes a valve body, the valve body is arranged in the exhaust hole, the valve body is provided with through holes penetrating the axial sides thereof, a valve cap is fixedly connected to the outer end of the valve body, a valve core and a spring are provided in the valve cap, the valve core is sealed with the air outlet end of the valve body, one end of the spring is against the valve core, and the other end of the spring is against the valve cap.

[0007] The utility model is further configured that a guide portion extending into the through hole is provided on the end surface of the valve core facing the valve body, and an exhaust groove is provided on the side wall of the guide portion.

[0008] The utility model is further configured that a guide rod is provided on the end surface of the valve core facing away from the valve body, and a guide hole for the guide rod to extend out is provided on the valve cap.

[0009] The utility model is further configured that the guide rod is threadedly connected with a limiting nut.

[0010] The utility model is further configured that an annular limiting ring is provided on the outer side wall of the gas outlet end of the valve body, and a chamfer is provided on the limiting ring.

[0011] The utility model is further configured as follows: a protruding barb portion is provided on the inner side wall of the opening end of the valve bonnet, and a plurality of the barb portions are provided, and the plurality of barb portions are arranged at equal intervals in the circumferential direction of the valve bonnet; a deformation groove is provided on the valve bonnet, and the deformation groove runs through the inner and outer sides and the opening end of the valve bonnet, and the deformation groove is arranged between two adjacent barb portions.

[0012] The utility model is further configured that an annular restraining groove is provided on the outer side wall of the valve cap, and a restraining ring is connected in the restraining groove.

[0013] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0014] The exhaust structure on the clutch booster provided by the utility model can automatically open to exhaust when the pressure in the cylinder is too high, and the opening size can be controlled, and it can also be directly opened to exhaust, and its valve core moves stably and reliably, and the valve cap is fixed safely and reliably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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.

[0016] Figure 1 It is a structural schematic diagram of the clutch booster of the utility model.

[0017] Figure 2 It is a schematic diagram of the structure of the exhaust valve of the utility model.

[0018] Figure 3 The following is a schematic diagram of the exhaust valve of the utility model. Figure 1 .

[0019] Figure 4 The following is a schematic diagram of the exhaust valve of the utility model. Figure 2 .

[0020] Figure 5 The following is a schematic diagram of the exhaust valve of the utility model. Figure 3 . DETAILED DESCRIPTION

[0021] 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.

[0022] For reference Figure 1-5 The utility model is described as follows:

[0023] Embodiment 1: An exhaust structure on a clutch booster comprises a cylinder body 1, an exhaust hole is provided on the cylinder body 1, and an exhaust valve is provided in the exhaust hole.

[0024] The exhaust valve includes a valve body 2, which is a cylindrical structure. The valve body 2 is arranged in the exhaust hole. A through hole 3 is provided in the center of the valve body 2 and passes through both sides of the axial direction. The valve body 2 is threadedly fixedly connected to the exhaust hole, and the valve body 2 is sealed to the exhaust hole.

[0025] The outer end of the valve body 2 is axially fixedly connected with a valve cap 4, and the valve cap 4 is arranged toward the opening of the valve body 2. An annular limit ring 12 is provided on the outer side wall of the air outlet end of the valve body 2, and a chamfer 13 is provided on the limit ring 12. A protruding barb 14 is provided on the inner side wall of the open end of the valve cap 4. There are multiple barb 14, and the multiple barb 14 are equidistantly arranged at circumferential intervals of the valve cap 4. The inner diameter of the open end of the valve cap 4 is equal to the outer diameter of the limit ring 12. The valve cap 4 and the valve body 2 are axially plugged in, and the outer end of the valve body 2 enters the valve cap 4, and the barb 14 passes over the limit ring 12. The barb 14 hooks the limit ring 12, so that the valve cap 4 and the valve body 2 are axially fixedly connected, and the valve cap 4 cannot be axially dislodged. The valve bonnet 4 is provided with a deformation groove 15, which is arranged along the axial direction of the valve bonnet 4, and is arranged on both the inner and outer sides and the open end of the valve bonnet 4. The deformation groove 15 is arranged between two adjacent barbs 14. The deformation groove 15 helps the open end of the valve bonnet 4 to deform, making it easier for the barbs 14 to pass over the limit ring 12, and also facilitating the removal of the valve bonnet 4. An annular constraint groove 16 is provided on the outer side wall of the valve bonnet 4, and a constraint ring 17 is connected in the constraint groove 16. The constraint ring 17 can form a restriction on the valve bonnet 4 to prevent the valve bonnet 4 from deforming when opened.

[0026] A valve core 5 and a spring 6 are arranged in the valve cap 4. The valve core 5 is in sealing cooperation with the outlet end of the valve body 2, one end of the spring 6 abuts against the valve core 5, and the other end of the spring 6 abuts against the valve cap 4. The spring 6 applies elastic force to the valve core 5, so that the valve core 5 forms an elastic sealing cooperation with the outlet end of the valve body 2 under the action of the elastic force.

[0027] A guide portion 7 extending into the through hole 3 is provided on the end surface of the valve core 5 facing the valve body 2, and an exhaust groove 8 is provided on the side wall of the guide portion 7. The diameter of the guide portion 7 is equal to the inner diameter of the through hole 3. The provision of the guide portion 7 can make the axial movement of the valve core 5 more stable, and also plays a role in positioning the position of the valve core 5 and the valve body 2.

[0028] A guide rod 9 is provided on the end surface of the valve core 5 facing away from the valve body 2, and a guide hole 10 for the guide rod 9 to extend out is provided on the valve cap 4. The guide rod 9 also plays a role in guiding the movement of the valve core 5. In this way, the valve core is guided at both ends of the valve core in cooperation with the guide part 7, so that the movement of the valve core 5 is more stable.

[0029] The guide rod 9 is threadedly connected with a limit nut 11, the valve core 5 is pushed open to exhaust, the valve core 5 moves, and the limit nut 11 will abut against the valve cap 4, thus limiting the distance that the valve core 5 can move. By adjusting the position of the limit nut 11 on the guide rod 9, the size of the opening of the valve core 5 can be adjusted, such as making the guide part 7 separate from the valve body.

[0030] 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 exhaust structure on a clutch booster, comprising a cylinder body (1), wherein the cylinder body (1) is provided with an exhaust hole, wherein an exhaust valve is provided in the exhaust hole, wherein: The exhaust valve comprises a valve body (2), the valve body (2) being arranged in the exhaust hole, the valve body (2) being provided with through holes (3) penetrating the valve body (2) on both sides of the axial direction, the outer end of the valve body (2) being fixedly connected with a valve cap (4), the valve cap (4) being provided with a valve core (5) and a spring (6), the valve core (5) being sealingly matched with the exhaust end of the valve body (2), one end of the spring (6) being abutted against the valve core (5), and the other end of the spring (6) being abutted against the valve cap (4); a guide portion (7) extending into the through hole (3) is provided on the end surface of the valve core (5) facing the valve body (2), and an exhaust groove (8) is provided on the side wall of the guide portion (7); a guide rod (9) is provided on the end surface of the valve core (5) facing away from the valve body (2), and a guide hole (10) for the guide rod (9) to extend out is provided on the valve cap (4); a limit nut (11) is threadedly connected to the guide rod (9).

2. The exhaust structure on the clutch booster according to claim 1, characterized in that: An annular limiting ring (12) is provided on the outer side wall of the gas outlet end of the valve body (2), and a chamfer (13) is provided on the limiting ring (12).

3. The exhaust structure on the clutch booster according to claim 1, characterized in that: A protruding barb portion (14) is provided on the inner side wall of the opening end of the valve bonnet (4), and a plurality of the barb portions (14) are provided. The plurality of barb portions (14) are arranged at equal intervals in the circumferential direction of the valve bonnet (4). A deformation groove (15) is provided on the valve bonnet (4), and the deformation groove (15) runs through the inner and outer sides and the opening end of the valve bonnet (4), and the deformation groove (15) is arranged between two adjacent barb portions (14).

4. The exhaust structure on the clutch booster according to claim 3, characterized in that: An annular restraining groove (16) is provided on the outer side wall of the valve cap (4), and a restraining ring (17) is connected inside the restraining groove (16).

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