Vacuum booster for three valve bodies

Abstract

The utility model belongs to the field of vacuum boosters, and particularly relates to a vacuum booster for three valve bodies, which comprises a front shell, a rear shell is fixedly connected to one side of the front shell, and sealing mechanisms are arranged on the surface of the front shell and the surface of the rear shell. The sealing mechanism can seal the joint of the front shell and the rear shell, on the other hand, the connecting strength of the front shell and the rear shell can be improved, and the first clamping ring and the second clamping ring which can rotate relatively are arranged on the connecting base so as to adapt to the front shell and the rear shell which are different in outer diameter size. After the first clamping ring and the second clamping ring are clamped, the butt joint plates get close to each other, reinforcement is conducted through the first fixing bolt, the effect of reinforcing and sealing the joint of the vacuum booster is achieved, and the problems that the connecting effect of the vacuum booster is possibly affected due to long-time use and external corrosion, air leakage of the vacuum booster is likely to be caused, and the service life of the vacuum booster is prolonged are solved. When the vacuum booster leaks air, the boosting effect is weakened or fails.

Description

Technical Field

[0001] The utility model relates to the field of vacuum boosters, in particular to a vacuum booster for three valve bodies. Background Art

[0002] The vacuum booster is generally located between the brake pedal and the brake master cylinder. For ease of installation, it is usually combined with the master cylinder into one component. It is mainly composed of a vacuum servo air chamber and a control valve, and the control valve part may contain three or more valves to achieve more complex control logic. The vacuum servo air chamber is composed of front and rear housings, with a servo air chamber diaphragm sandwiched between the two, dividing the servo air chamber into front and rear chambers. The front chamber leads to the engine intake manifold (ie, the vacuum source) through a vacuum one-way valve, and the rear chamber is connected to the control valve.

[0003] However, in the prior art, most vacuum boosters are only fixed by riveting and bolts. After long-term use and external corrosion, the connection effect may be affected, which may easily lead to vacuum booster leakage. When the vacuum booster leaks, the boosting effect will be weakened or fail, making the brake pedal harder and requiring more force to step on it, and the braking effect will be significantly reduced. In an emergency, this reduction in braking performance may endanger driving safety. Utility Model Content

[0004] In order to make up for the shortcomings of the prior art, after long-term use and external corrosion, the connection effect of the vacuum booster may be affected, which may easily lead to leakage of the vacuum booster. When the vacuum booster leaks, the boosting effect will be weakened or invalid, making the brake pedal harder and requiring more force to step on it, and the braking effect will be significantly reduced. In an emergency, such a reduction in braking performance may endanger driving safety and other issues. The utility model proposes a vacuum booster for a three-valve body.

[0005] The utility model solves the technical problem by adopting a technical solution: a vacuum booster for a three-valve body, comprising a front housing, one side of the front housing is fixedly connected to a rear housing, and a sealing mechanism is provided on the surface of the front housing and the surface of the rear housing;

[0006] The sealing mechanism includes a first clamping ring, the inner wall of which is in contact with the surfaces of the front shell and the rear shell, one end of the first clamping ring is fixedly connected to a connecting seat, the inner cavity of the connecting seat is rotatably connected to a second clamping ring, the inner wall of the second clamping ring is in contact with the surfaces of the front shell and the rear shell, the surface of the first clamping ring and the surface of the second clamping ring are both fixedly connected to a docking plate, and the inner cavity of the docking plate is movably connected to a first fixing bolt.

[0007] Preferably, the inner walls of the first clamping ring and the second clamping ring are provided with sealing rings, and the inner walls of the sealing rings are fixedly sleeved on the surfaces of the front shell and the rear shell.

[0008] Preferably, a sleeve is fixedly connected to the surfaces of the first clamping ring and the second clamping ring, an adjusting rod is slidably connected to the inner cavity of the sleeve, and a fixing piece is slidably connected to the inner cavity of the adjusting rod.

[0009] Preferably, a straight slot is provided on one side of the sleeve, a second fixing bolt is slidably provided on the inner wall of the straight slot, a surface of the second fixing bolt is threadedly connected to the inner cavity of the adjusting rod, and one side of the bolt head of the second fixing bolt abuts against one side of the sleeve.

[0010] Preferably, the fixing member is L-shaped, one side of the fixing member is fixedly connected to a limiting plate, one side of the fixing member is provided with a mounting hole, and the inner cavity of the fixing member and the inner cavity of the adjusting rod are threadedly connected with a third fixing bolt.

[0011] Preferably, one side of the front shell is fixedly connected with a vacuum tube, and a gasket is fixedly sleeved on the surface of the vacuum tube.

[0012] Preferably, a control valve stem is slidably connected to the inner cavity of the rear shell, a rod fork is fixedly connected to one end of the control valve stem, and a protective sleeve is fixedly connected to the surface of the control valve stem.

[0013] The utility model is beneficial in that:

[0014] The utility model can seal the connection between the front shell and the rear shell through the sealing mechanism, and on the other hand, can improve the connection strength between the front shell and the rear shell. The first clamping ring and the second clamping ring can be relatively rotated through the connecting seat to adapt to the front shell and the rear shell of different outer diameters. After the first clamping ring and the second clamping ring are clamped, the docking plates are close to each other and reinforced by the first fixing bolt, so as to achieve the effect of reinforcing and sealing the joint of the vacuum booster, and solve the problem that the connection effect of the vacuum booster may be affected by long-term use and external corrosion, which may easily cause the vacuum booster to leak. When the vacuum booster leaks, it will cause the boosting effect to weaken or fail, so that the brake pedal becomes harder and requires more force to be stepped on, and the braking effect is significantly reduced. In an emergency, the reduction in braking performance may endanger driving safety and other problems. 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 work.

[0016] Figure 1This is the first three-dimensional schematic diagram of the overall device of the present utility model;

[0017] Figure 2 This is the second three-dimensional schematic diagram of the overall device of the present utility model;

[0018] Figure 3 This is the three-dimensional schematic diagram of the sealing mechanism of the present utility model;

[0019] Figure 4 This is the connection schematic diagram of the sleeve, adjusting rod and fixing part of the present utility model;

[0020] Figure 5 This is the fixing schematic diagram of the fixing part of the present utility model.

[0021] In the figure: 1. Front housing; 2. Rear housing; 3. Sealing mechanism; 301. First snap ring; 302. Connection seat; 303. Second snap ring; 304. Docking plate; 305. First fixing bolt; 4. Sealing ring; 5. Sleeve; 6. Adjusting rod; 7. Fixing part; 8. Straight notch; 9. Second fixing bolt; 10. Limiting plate; 11. Mounting hole; 12. Third fixing bolt; 13. Vacuum tube; 14. Gasket; 15. Control valve rod; 16. Rod fork; 17. Protective sleeve. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] The following is a further detailed description of the present application in conjunction with the attached Figures 1-5 This application is further described in detail below.

[0024] The embodiment of the present application discloses a vacuum booster for a three-valve body. Refer to Figures 1 to 3 , the vacuum booster for a three-valve body includes a front housing 1, one side of the front housing 1 is fixedly communicated with a vacuum tube 13, the surface of the vacuum tube 13 is fixedly sleeved with a gasket 14, one side of the front housing 1 is fixedly connected with a rear housing 2, the inner cavity of the rear housing 2 is slidably connected with a control valve rod 15, one end of the control valve rod 15 is fixedly connected with a rod fork 16, the surface of the control valve rod 15 is fixedly connected with a protective sleeve 17, and a sealing mechanism 3 is arranged on the surfaces of the front housing 1 and the rear housing 2;

[0025] The sealing mechanism 3 includes a first clamping ring 301. The inner wall of the first clamping ring 301 fits against the surfaces of the front housing 1 and the rear housing 2. One end of the first clamping ring 301 is fixedly connected to a connecting seat 302. A second clamping ring 303 is rotatably connected to the inner cavity of the connecting seat 302. The inner wall of the second clamping ring 303 fits against the surfaces of the front housing 1 and the rear housing 2. Docking plates 304 are fixedly connected to the surfaces of the first clamping ring 301 and the second clamping ring 303. A first fixing bolt 305 is movably inserted into the inner cavity of the docking plate 304. For the vacuum booster of the three-valve body, the front housing 1 and the rear housing 2 are fixedly connected into one body by riveting, connected to the brake pedal of the vehicle through a rod fork 16, the vacuum tube 13 can be connected to the vacuum pump of the vehicle, and the connection between the front housing 1 and the rear housing 2 can be sealed through the sealing mechanism 3. On the other hand, the connection strength between the front housing 1 and the rear housing 2 can be improved. The first clamping ring 301 and the second clamping ring 303 that can rotate relative to each other through the connecting seat 302 are used to adapt to the front housing 1 and the rear housing 2 with different outer diameter sizes. After the first clamping ring 301 and the second clamping ring 303 are clamped, the docking plates 304 approach each other, and reinforcement is carried out through the first fixing bolt 305.

[0026] Refer to Figure 3 , a sealing ring 4 is arranged on the inner walls of the first clamping ring 301 and the second clamping ring 303. The inner wall of the sealing ring 4 is fixedly sleeved on the surfaces of the front housing 1 and the rear housing 2. Through the arranged sealing ring 4, the sealing ring 4 can be made of rubber material to further improve the sealing effect of the joint between the front housing 1 and the rear housing 2.

[0027] Refer to Figure 4 , sleeves 5 are fixedly connected to the surfaces of the first clamping ring 301 and the second clamping ring 303. An adjusting rod 6 is slidably connected to the inner cavity of the sleeve 5. A fixing member 7 is slidably connected to the inner cavity of the adjusting rod 6. Through the arranged sleeves 5, adjusting rod 6 and fixing member 7, an installation member is formed between the sleeves 5, adjusting rod 6 and fixing member 7, which is convenient for installing the vacuum booster with the sealing mechanism 3 to different vehicle models.

[0028] Refer to Figure 4 , a straight notch 8 is opened on one side of the sleeve 5. A second fixing bolt 9 is slidably arranged on the inner wall of the straight notch 8. The surface of the second fixing bolt 9 is threadedly connected to the inner cavity of the adjusting rod 6. One side of the bolt head of the second fixing bolt 9 abuts against one side of the sleeve 5. Through the arranged second fixing bolt 9, the surface of the adjusting rod 6 can be slidably adjusted along the inner wall of the sleeve 5, so that the adjusting rod 6 extends or retracts, thereby adapting to the installation parts of different vehicle models. When the adjusting rod 6 is adjusted to a suitable position, the position of the adjusting rod 6 is fixed by tightening the second fixing bolt 9.

[0029] Refer to Figure 5, the fixing member 7 is provided in an L shape. One side of the fixing member 7 is fixedly connected with a limiting plate 10. An installation hole 11 is formed on one side of the fixing member 7. A third fixing bolt 12 is screwed in the inner cavity of the fixing member 7 and the inner cavity of the adjusting rod 6. By providing the fixing member 7, the fixing member 7 can slide along the inner cavity of the adjusting rod 6, so that the installation hole 11 is close to the fixing holes of different vehicle models. When the fixing member 7 is adjusted to a proper position, the position of the fixing member 7 on the adjusting rod 6 can be fixed by the third fixing bolt 12.

[0030] Working principle: The front housing 1 and the rear housing 2 are fixedly connected into one body by riveting, and are connected to the brake pedal of the vehicle through the rod fork 16. The vacuum tube 13 can be connected to the vacuum pump of the vehicle. The sealing mechanism 3 can seal the connection between the front housing 1 and the rear housing 2. On the other hand, it can improve the connection strength between the front housing 1 and the rear housing 2. The first snap ring 301 and the second snap ring 303 that can rotate relative to each other through the connecting seat 302 are used to adapt to the front housing 1 and the rear housing 2 with different outer diameter sizes. After the first snap ring 301 and the second snap ring 303 are snap-connected, the docking plates 304 approach each other and are reinforced by the first fixing bolt 305. The sealing ring 4 made of rubber can further improve the sealing effect of the joint between the front housing 1 and the rear housing 2. During installation, the surface of the adjusting rod 6 can slide and adjust along the inner wall of the sleeve 5, so that the adjusting rod 6 extends or retracts, so as to adapt to the installation parts of different vehicle models. When the adjusting rod 6 is adjusted to a proper position, the position of the adjusting rod 6 is fixed by tightening the second fixing bolt 9. The fixing member 7 can slide along the inner cavity of the adjusting rod 6, so that the installation hole 11 is close to the fixing holes of different vehicle models. When the fixing member 7 is adjusted to a proper position, the position of the fixing member 7 on the adjusting rod 6 can be fixed by the third fixing bolt 12.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. Vacuum booster for a three-valve body, characterized in that: It includes a front housing (1), one side of the front housing (1) is fixedly connected to a rear housing (2), and a sealing mechanism (3) is arranged on the surfaces of the front housing (1) and the rear housing (2); The sealing mechanism (3) includes a first clamping ring (301), the inner wall of the first clamping ring (301) fits on the surfaces of the front housing (1) and the rear housing (2), one end of the first clamping ring (301) is fixedly connected to a connecting seat (302), a second clamping ring (303) is rotatably connected to the inner cavity of the connecting seat (302), the inner wall of the second clamping ring (303) fits on the surfaces of the front housing (1) and the rear housing (2), docking plates (304) are fixedly connected to the surfaces of the first clamping ring (301) and the second clamping ring (303), and a first fixing bolt (305) is movably inserted into the inner cavity of the docking plate (304).

2. The vacuum booster for a three-valve body according to claim 1, characterized in that: Sealing rings (4) are arranged on the inner walls of the first clamping ring (301) and the second clamping ring (303), and the inner walls of the sealing rings (4) are fixedly sleeved on the surfaces of the front housing (1) and the rear housing (2).

3. The vacuum booster for a three-valve body according to claim 1, characterized in that: Sleeves (5) are fixedly connected to the surfaces of the first clamping ring (301) and the second clamping ring (303), adjusting rods (6) are slidably connected to the inner cavities of the sleeves (5), and fixing members (7) are slidably connected to the inner cavities of the adjusting rods (6).

4. The vacuum booster for a three-valve body according to claim 3, characterized in that: A straight notch (8) is formed on one side of the sleeve (5), a second fixing bolt (9) is slidably arranged on the inner wall of the straight notch (8), the surface of the second fixing bolt (9) is threadedly connected to the inner cavity of the adjusting rod (6), and one side of the bolt head of the second fixing bolt (9) abuts against one side of the sleeve (5).

5. The vacuum booster for a three-valve body according to claim 3, characterized in that: The fixing member (7) is arranged in an L shape, a limiting plate (10) is fixedly connected to one side of the fixing member (7), a mounting hole (11) is formed on one side of the fixing member (7), and a third fixing bolt (12) is threadedly connected to the inner cavities of the fixing member (7) and the adjusting rod (6).

6. The vacuum booster for a three-valve body according to claim 1, characterized in that: A vacuum tube (13) is fixedly communicated with one side of the front housing (1), and a gasket (14) is fixedly sleeved on the surface of the vacuum tube (13).

7. The vacuum booster for a three-valve body according to claim 1, characterized in that: A control valve rod (15) is slidably connected to the inner cavity of the rear housing (2), a rod fork (16) is fixedly connected to one end of the control valve rod (15), and a protective sleeve (17) is fixedly connected to the surface of the control valve rod (15).

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