Valve body of automobile brake vacuum booster

Abstract

The utility model relates to the technical field of vacuum booster valve bodies, and discloses an automobile brake vacuum booster valve body which comprises a shell, a left cavity is formed in the left side of the shell, a right cavity is formed in the right side of the shell, a sleeve is communicated with the right side of the shell, and a push rod is slidably connected to the left side of the sleeve. An elastic assembly is arranged on the outer wall of the push rod, a limiting plate is fixedly connected to the left end of the push rod, a sealing plug is fixedly connected to the left side of the limiting plate, a protruding block is fixedly connected to the left side of the limiting plate, the outer wall of the sealing plug is arranged on the inner side of the protruding block, and a membrane is arranged on the left side of the sealing plug. A sealing opening is formed in the inner side of the diaphragm. According to the utility model, the limiting plate and the convex block are arranged on the right side of the sealing plug and are embedded with the groove of the diaphragm, so that the sealing performance of the diaphragm is improved, the installation can be completed through simple sleeving and pasting, the installation time and manpower are saved, and the omnibearing fitting protection of the valve body is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum booster valve bodies, in particular to a brake vacuum booster valve body for an automobile. Background Art

[0002] Automobile braking is an important part of automobile safety devices and plays a vital role in driving safety. This system works together through a series of complex mechanical and electronic components to ensure that the vehicle can slow down or stop in a timely and accurate manner according to the driver's intention during driving.

[0003] One of the key components is called the automobile brake vacuum booster valve body, which is used to provide assistance when the car brakes, reduce the force the driver puts on the brake pedal, and makes braking easier and more sensitive. It pushes the sealing plug against the diaphragm through the push rod, thereby separating the left and right cavities, and deforms under the action of pressure difference to achieve assistance.

[0004] The existing sealing plug uses a simple sealing ring or sealing gasket to block the diaphragm opening, which will cause wear under complex working conditions and after long-term use, resulting in a gradual decrease in the sealing effect and incomplete isolation of the left and right cavities, affecting the stability and accuracy of the vacuum booster. Therefore, an automobile brake vacuum booster valve body is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides an automobile brake vacuum booster valve body, aiming to improve the problem in the prior art that the sealing plug uses a simple sealing ring or sealing gasket to block the diaphragm opening, resulting in a gradual decrease in the sealing effect and incomplete isolation of the left and right cavities.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a valve body of a vehicle brake vacuum booster includes a shell, a left cavity is opened on the left side of the shell, a right cavity is opened on the right side of the shell, a sleeve is connected to the right side of the shell, a push rod is slidably connected to the left side of the sleeve, an elastic component is arranged on the outer wall of the push rod, the left end of the push rod is fixedly connected to a limiting plate, a sealing plug is fixedly connected to the left side of the limiting plate, a protrusion is fixedly connected to the left side of the limiting plate, the outer wall of the sealing plug is arranged on the inner side of the protrusion, a diaphragm is arranged on the left side of the sealing plug, a sealing port is opened on the inner side of the diaphragm, a groove three is opened on the right side of the diaphragm, and a protective mechanism is arranged on the outer side of the shell, and the protective mechanism is used to protect the shell from damage when the valve body is hit.

[0007] As a further description of the above technical solution:

[0008] The protective mechanism includes a protective shell 1, the inner side of the protective shell 1 is arranged on the rear side of the outer shell, the front side of the protective shell 1 is arranged with a protective shell 2, the top front side of the protective shell 1 is fixedly connected to the top rear side of the protective shell 2, the bottom front side of the protective shell 1 is fixedly connected with Velcro 1, the bottom rear side of the protective shell 2 is fixedly connected with Velcro 2, the front side of Velcro 1 is slidably connected to the rear side of Velcro 2, the left sides of the protective shell 1 and the protective shell 2 are provided with a groove 2, and the right sides of the protective shell 1 and the protective shell 2 are provided with a groove 1.

[0009] As a further description of the above technical solution:

[0010] The elastic component includes two push plates, the left push plate is fixedly connected to the inner wall of the sleeve, and the right push plate is fixedly connected to the inner wall of the sleeve. The adjacent sides of the two push plates are fixedly connected with springs.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the sealing plug is fixedly connected with a sealing ring, and the outer wall of the sealing ring is slidably connected to the inner side of the sealing port.

[0013] As a further description of the above technical solution:

[0014] A fixing plate is arranged at the right end of the push rod, and first through holes are arranged at the front and rear sides of the fixing plate.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the push rod is fixedly connected with a connecting block, and the outer wall of the connecting block is provided with a plurality of second through holes.

[0017] As a further description of the above technical solution:

[0018] A plurality of third through holes are formed on the left outer wall of the fixing plate, and the third through holes are connected to the second through holes by bolts.

[0019] As a further description of the above technical solution:

[0020] A connecting port is provided on the left side of the shell, and a connecting piece is fixedly connected to the inner side of the connecting port.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, a limiting plate is arranged on the right side of the sealing plug, and the convex block is engaged with the groove on the right side of the diaphragm, and the sealing ring and the sealing port are tightly connected, so that the sealing performance of the diaphragm is improved, the left and right cavities are effectively isolated, and the stability and accuracy of the vacuum boosting are guaranteed, thereby extending the service life of the vacuum booster valve body and the entire braking system.

[0023] 2. In the utility model, the installation can be completed by simply inserting the protective shell 1 and the protective shell 2 and sticking the Velcro 1 and the Velcro 2. No complicated tools and steps are required, which saves installation time and manpower. The shape fits the shell, realizing all-round fitting protection of the valve body and effectively reducing the risk of various damages to the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of the automobile brake vacuum booster valve body proposed by the utility model;

[0025] Figure 2 A cross-sectional view of a valve body of a brake vacuum booster for an automobile proposed in the utility model;

[0026] Figure 3 This is a structural schematic diagram of the diaphragm of the automobile brake vacuum booster valve body proposed by the utility model;

[0027] Figure 4 This is a disassembled diagram of the automobile brake vacuum booster valve body proposed by the utility model;

[0028] Figure 5 for Figure 4 A magnified view of location A;

[0029] Figure 6 The utility model is a schematic structural diagram of the protection mechanism of the automobile brake vacuum booster valve body.

[0030] Legend:

[0031] 1. Shell; 2. Protection mechanism; 201. Protection shell one; 202. Protection shell two; 203. Velcro one; 204. Velcro two; 205. Groove one; 206. Groove two; 3. Sleeve; 4. Push rod; 5. Push plate; 6. Spring; 7. Limiting plate; 8. Sealing plug; 9. Bump; 10. Diaphragm; 11. Groove three; 12. Sealing port; 13. Sealing ring; 14. Right cavity; 15. Left cavity; 16. Fixing plate; 17. First through hole; 18. Connecting block; 19. Second through hole; 20. Third through hole; 21. Bolt; 22. Connecting port; 23. Connecting piece. DETAILED DESCRIPTION

[0032] 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 in 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.

[0033] Refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 3 The utility model provides an embodiment: a brake vacuum booster valve body for an automobile, comprising a shell 1, a left cavity 15 is provided on the left side of the shell 1, a right cavity 14 is provided on the right side of the shell 1, a sleeve 3 is connected to the right side of the shell 1, a push rod 4 is slidably connected to the left side of the sleeve 3, an elastic component is provided on the outer wall of the push rod 4, a limiting plate 7 is fixedly connected to the left end of the push rod 4, a sealing plug 8 is fixedly connected to the left side of the limiting plate 7, a protrusion 9 is fixedly connected to the left side of the limiting plate 7, an outer wall of the sealing plug 8 is provided on the inner side of the protrusion 9, a diaphragm 10 is provided on the left side of the sealing plug 8, and a sealing port is provided on the inner side of the diaphragm 10 12, a groove 3 11 is provided on the right side of the diaphragm 10, and a protective mechanism 2 is provided on the outer side of the shell 1, and the protective mechanism 2 is used to protect the shell 1 from damage when the valve body is hit; the elastic component includes two push plates 5, the left push plate 5 is fixedly connected to the inner wall of the sleeve 3, and the right push plate 5 is fixedly connected to the inner wall of the sleeve 3, and the adjacent sides of the two push plates 5 are fixedly connected with springs 6; the outer wall of the sealing plug 8 is fixedly connected with a sealing ring 13, and the outer wall of the sealing ring 13 is slidably connected to the inner side of the sealing port 12; a connecting port 22 is provided on the left side of the shell 1, and a connecting piece 23 is fixedly connected to the inner side of the connecting port 22.

[0034] Specifically, the elastic component helps to maintain the stability of the movement of the push rod 4. By providing a limiting plate 7 and a protrusion 9 on the right side of the sealing plug 8, the three grooves 11 provided on the right side of the protrusion 9 and the diaphragm 10 are interlocked, thereby increasing the sealing performance of the diaphragm 10, and being able to more effectively isolate the left cavity 15 and the right cavity 14, thereby ensuring the stability and accuracy of the vacuum assistance, thereby significantly improving the braking performance of the vehicle. A sealing ring 13 is fixedly connected to the outer wall of the sealing plug 8 to complete multiple sealings and adapt to complex working conditions of different temperatures, pressures and vibrations. It is connected to other system components through the connecting port 22 to ensure the normal operation of the entire vehicle braking system.

[0035] Refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 3The utility model provides an embodiment: the protection mechanism 2 includes a protection shell 201, the inner side of the protection shell 201 is arranged on the rear side of the shell 1, the front side of the protection shell 201 is provided with a protection shell 202, the top front side of the protection shell 201 is fixedly connected to the top rear side of the protection shell 202, the bottom front side of the protection shell 201 is fixedly connected with a Velcro 1 203, the bottom rear side of the protection shell 202 is fixedly connected with a Velcro 2 204, the front side of the Velcro 1 203 is slidably connected to the rear side of the Velcro 2 204, the left side of the protection shell 201 and the protection shell 202 is provided with a groove 206, and the right side of the protection shell 201 and the protection shell 202 is provided with a groove 1 205.

[0036] Specifically, by connecting the protective shell 1 201 and the protective shell 2 202 at only the top, they can be inserted into the outer wall of the outer shell 1, and the installation can be completed by simply inserting and sticking Velcro 1 203 and Velcro 2 204. No complicated tools and steps are required, which saves installation time and manpower. The groove 1 205 and the groove 2 206 plus the protective shell 1 201 and the protective shell 2 202 can fully cover the outer wall of the outer shell 1, provide all-round protection, and reduce the risk of damage to the outer shell 1 by impact, scratches, etc.

[0037] Refer to the attached Figure 1 , Attachment Figure 2 and attached Figure 3 The utility model provides an embodiment: a fixing plate 16 is provided at the right end of the push rod 4, and a first through hole 17 is opened on the front and rear sides of the fixing plate 16; a connecting block 18 is fixedly connected to the outer wall of the push rod 4, and a plurality of second through holes 19 are opened on the outer wall of the connecting block 18; a plurality of third through holes 20 are opened on the left outer wall of the fixing plate 16, and the third through holes 20 and the second through holes 19 are connected by bolts 21.

[0038] Specifically, the fixing plate 16 and the push rod 4 are connected by bolts 21, so that the fixing plate 16 with different first through holes 17 can be disassembled and replaced to connect other parts, thereby increasing the versatility of the valve body.

[0039] Working principle: When a force acts on the push rod 4, the push rod 4 moves to the left, driving the sealing plug 8 to move to the left, contacting the sealing port 12 inside the diaphragm 10, so that the diaphragm 10 isolates the left cavity 15 and the right cavity 14, and a limiting plate 7 is set on the right side of the sealing port 12. The diameter of the limiting plate 7 is larger than the sealing port 12. When the push rod 4 is pushed to the left all the way, the limiting plate 7 is against the right side of the sealing port 12, and the protrusion 9 on the limiting plate 7 is engaged with the groove 3 11 set on the right side of the diaphragm 10, thereby enhancing the sealing effect and preventing air circulation in the cavity.

[0040] The top of protective shell 1 201 is connected to the top of protective shell 202, and its bottom is connected by Velcro 1 203 and Velcro 2 204. Grooves 1 205 and 206 are left on both sides to match the sleeve 3 and the connecting piece 23. When installing, first put protective shell 1 201 on one side of the outer shell 1, and then put protective shell 2 202 on the other side of the outer shell 1, and then stick Velcro 1 203 and Velcro 2 204 together to wrap the outer wall of the outer shell 1, thereby protecting the outer shell 1.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. 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. A brake vacuum booster valve body for an automobile, comprising a housing (1), characterized in that: The left side of the shell (1) is provided with a left cavity (15), the right side of the shell (1) is provided with a right cavity (14), the right side of the shell (1) is connected with a sleeve (3), the left side of the sleeve (3) is slidably connected with a push rod (4), the outer wall of the push rod (4) is provided with an elastic component, the left end of the push rod (4) is fixedly connected with a limiting plate (7), the left side of the limiting plate (7) is fixedly connected with a sealing plug (8), the left side of the limiting plate (7) is fixedly connected with a protrusion (9), the outer wall of the sealing plug (8) is arranged on the inner side of the protrusion (9), the left side of the sealing plug (8) is provided with a diaphragm (10), the inner side of the diaphragm (10) is provided with a sealing port (12), the right side of the diaphragm (10) is provided with a groove three (11), and the outer side of the shell (1) is provided with a protective mechanism (2), the protective mechanism (2) is used to protect the shell (1) from damage when the valve body is hit.

2. The automobile brake vacuum booster valve body according to claim 1, characterized in that: The protective mechanism (2) comprises a protective shell 1 (201), the inner side of the protective shell 1 (201) is arranged on the rear side of the outer shell (1), the front side of the protective shell 1 (201) is provided with a protective shell 2 (202), the top front side of the protective shell 1 (201) is fixedly connected to the top rear side of the protective shell 2 (202), the bottom front side of the protective shell 1 (201) is fixedly connected to a Velcro 1 (203), the bottom rear side of the protective shell 2 (202) is fixedly connected to a Velcro 2 (204), the front side of the Velcro 1 (203) is slidably connected to the rear side of the Velcro 2 (204), the left side of the protective shell 1 (201) and the protective shell 2 (202) is provided with a groove 2 (206), and the right side of the protective shell 1 (201) and the protective shell 2 (202) is provided with a groove 1 (205).

3. The automobile brake vacuum booster valve body according to claim 1, characterized in that: The elastic component comprises two push plates (5), the left push plate (5) is fixedly connected to the inner wall of the sleeve (3), and the right push plate (5) is fixedly connected to the inner wall of the sleeve (3), and the adjacent sides of the two push plates (5) are fixedly connected with springs (6).

4. The automobile brake vacuum booster valve body according to claim 1, characterized in that: The outer wall of the sealing plug (8) is fixedly connected with a sealing ring (13), and the outer wall of the sealing ring (13) is slidably connected to the inner side of the sealing opening (12).

5. The automobile brake vacuum booster valve body according to claim 1, characterized in that: A fixing plate (16) is provided at the right end of the push rod (4), and first through holes (17) are provided on the front and rear sides of the fixing plate (16).

6. The automobile brake vacuum booster valve body according to claim 1, characterized in that: The outer wall of the push rod (4) is fixedly connected to a connecting block (18), and the outer wall of the connecting block (18) is provided with a plurality of second through holes (19).

7. The automobile brake vacuum booster valve body according to claim 5, characterized in that: A plurality of third through holes (20) are provided on the left outer wall of the fixing plate (16), and the third through holes (20) and the second through holes (19) are connected via bolts (21).

8. The automobile brake vacuum booster valve body according to claim 1, characterized in that: A connection opening (22) is provided on the left side of the housing (1), and a connection piece (23) is fixedly connected to the inner side of the connection opening (22).

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