Vacuum booster belt pump assembly

Abstract

The utility model discloses a vacuum booster belt pump assembly which comprises a front shell and a rear shell, the front shell is connected to one side of the rear shell in a clamped mode, a bolt base is arranged on the side, away from the rear shell, of the front shell, a diaphragm partition plate is movably arranged between the front shell and the rear shell, and limiting rings are arranged on the sides, corresponding to each other, of the rear shell and the diaphragm partition plate. A return spring is arranged between the two limiting rings, and rubber pads are arranged in inner cavities of the limiting rings. By arranging the sealing ring in the inner cavity of the limiting ring, the return spring does not make direct contact with the rear shell or the diaphragm partition plate, torsion generated when the return spring is compressed can act on the rubber pad, and after vibration is counteracted and absorbed by the rubber pad, noise transmission can be reduced, so that a driver can obtain better driving feeling.

Description

Technical Field

[0001] The utility model relates to the technical field of boosters, in particular to a vacuum booster with a pump assembly. Background Art

[0002] The booster is installed between the brake pedal and the master cylinder, and consists of a power cylinder and its internal power piston, a vacuum valve linked to the brake pedal, etc. When the driver steps on the brake pedal, the booster will generate additional thrust through the internal mechanism to help the piston of the master cylinder generate greater oil pressure, thereby obtaining sufficient braking force.

[0003] After searching, in the prior art, a utility model with a publication number of CN214164964U discloses a vacuum booster assembly that can improve the initial force of the pedal. It includes a stop base, a proportional disk and a feedback plate, wherein the proportional disk is located between the stop base and the feedback plate, and one end of the proportional disk is always in contact with the feedback plate. The gap between the stop base and the feedback plate is eliminated by the constant contact between the proportional disk and the feedback plate, thereby reducing the pedal stroke. The stop base and the feedback plate are always in a pre-top state, generating a reaction force, so that the initial force of the pedal gradually increases with the increase of the stroke, eliminating the feeling of stepping on the pedal in the initial stage, and giving the driver a sense of solidity when stepping on the pedal. The utility model can improve the driver's braking feel in the initial stage of braking the vehicle, allowing the driver's pedal force to increase linearly from the moment of contacting the pedal, eliminating the shortcomings of stepping on the pedal and soft braking, and can be widely used in automobile braking systems.

[0004] And the prior art, a vacuum booster assembly with adjustable starting power is disclosed with announcement number CN217145952U.

[0005] The above method still has the following shortcomings. In the process from the brake pedal being stepped on to the rebound, the return spring is involved. Affected by resonance and friction, a certain degree of noise will be generated between the return spring and the booster, which cannot provide a good user experience and reduces the practicality of the device. Utility Model Content

[0006] The purpose of the utility model is to provide a vacuum booster with a pump assembly to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: it includes a front shell and a rear shell, the front shell is clamped on one side of the rear shell, a bolt seat is provided on the side of the front shell away from the rear shell, a diaphragm partition is movably provided between the front shell and the rear shell, limiting rings are provided on the sides of the rear shell corresponding to each other, a return spring is provided between the two limiting rings, and a rubber pad is provided in the inner cavity of the limiting ring.

[0008] Preferably, a groove is formed on one side of the rubber pad close to the return spring, and the end of the return spring is located in the inner cavity of the groove.

[0009] Preferably, a brake master cylinder is connected to the other side of the rear housing, a brake oil tank is arranged above the brake master cylinder, a push rod is movably arranged in the inner cavity of the brake master cylinder, and a sealing plug is sleeved on the outer ring of the push rod.

[0010] Preferably, a fixing ring is provided on one side of the rear shell body in the middle of the inner cavity of the limiting ring, a retaining ring is provided at one end of the fixing ring, a sealing ring is movably provided in the inner cavity of the fixing ring, and the sealing ring is fixedly sleeved on the outer ring of the push rod.

[0011] Preferably, fixing sleeves are provided on both sides of the sealing ring, and a plurality of support rods are distributed on the outer ring of the fixing sleeve.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The vacuum booster with pump assembly has a sealing ring arranged in the inner cavity of the limit ring so that there is no direct contact between the return spring and the rear housing or the diaphragm partition. The torsion generated when the return spring is compressed can act on the rubber pad. After the rubber pad offsets and absorbs the vibration, the transmission of noise can be reduced, so that the driver can have a better driving experience.

[0014] 2. The vacuum booster with pump assembly, through the coordinated use of sealing plugs, sealing rings, fixing sleeves and support rods, the sealing plugs and sealing rings can double-seal the brake master cylinder to prevent brake oil from entering the booster pump, so as to ensure the stable use of the device. The fixing sleeves and support rods are used to stabilize the shape of the sealing ring to prevent the edge of the sealing ring from bending due to friction when the sealing ring moves in the inner cavity of the fixing ring, thereby avoiding the formation of a gap between the sealing ring and the fixing ring, so as to further improve the sealing performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the rubber pad of the utility model.

[0018] Figure 4 This is a schematic diagram of the sealing ring structure of the utility model.

[0019] Figure 5 This is a schematic diagram of the support rod structure of the utility model.

[0020] In the figure: 1. front housing; 2. rear housing; 3. diaphragm partition; 4. limit ring; 5. return spring; 6. rubber pad; 7. groove; 8. brake master cylinder; 9. brake oil tank; 10. push rod; 11. sealing plug; 12. fixing ring; 13. retaining ring; 14. sealing ring; 15. fixing sleeve; 16. support rod; 17. bolt seat. 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 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.

[0022] Example: See Figure 1-5 The utility model provides a technical solution: a vacuum booster with a pump assembly, including a front shell 1 and a rear shell 2, the front shell 1 is clamped on one side of the rear shell 2, a bolt seat 17 is arranged on the side of the front shell 1 away from the rear shell 2, a diaphragm partition 3 is movably arranged between the front shell 1 and the rear shell 2, a limiting ring 4 is arranged on the side corresponding to the rear shell 2 and the diaphragm partition 3, a return spring 5 is arranged between the two limiting rings 4, and a rubber pad 6 is arranged in the inner cavity of the limiting ring 4.

[0023] A groove 7 is formed on one side of the rubber pad 6 close to the return spring 5 , and an end of the return spring 5 is located in the inner cavity of the groove 7 .

[0024] In this embodiment, the edge of the rubber pad 6 is tightly fitted with the inner wall of the limit ring 4, and the return spring 5 is located between the two rubber pads 6, so that there is no direct contact between the return spring 5 and the rear shell 2 or the diaphragm partition 3. The torsion generated when the return spring 5 is compressed can act on the rubber pad 6. After the rubber pad 6 offsets and absorbs the vibration, the transmission of noise can be reduced, so that the driver can get a better driving experience; the groove 7 plays a limiting role to prevent the end position of the return spring 5 from being displaced when it is extended and retracted, so as to ensure that the return spring 5 will not contact other structures, thereby further avoiding the generation of noise.

[0025] The other side of the rear housing 2 is connected to a brake master cylinder 8 , a brake oil tank 9 is arranged above the brake master cylinder 8 , a push rod 10 is movably arranged in the inner cavity of the brake master cylinder 8 , and a sealing plug 11 is sleeved on the outer ring of the push rod 10 .

[0026] Among them, a fixing ring 12 is arranged at the middle position of the inner cavity of the limiting ring 4 on one side of the rear shell body 2, a retaining ring 13 is arranged at one end of the fixing ring 12, a sealing ring 14 is movably arranged in the inner cavity of the fixing ring 12, and the sealing ring 14 is fixedly sleeved on the outer ring of the push rod 10.

[0027] In this embodiment, the sealing plug 11 can initially seal the brake oil in the brake master cylinder 8, and the sealing ring 14 is used for further sealing to prevent oil from entering between the rear housing 2 and the front housing 1, resulting in insensitive braking.

[0028] Wherein, fixing sleeves 15 are arranged on both sides of the sealing ring 14 , and a plurality of support rods 16 are distributed on the outer ring of the fixing sleeve 15 .

[0029] In this embodiment, the fixing sleeve 15 and the support rod 16 are used to stabilize the shape of the sealing ring 14 to prevent the edge of the sealing ring 14 from being bent due to friction when the sealing ring 14 moves in the inner cavity of the fixing ring 12, thereby avoiding the formation of a gap between the sealing ring 14 and the fixing ring 12, thereby further improving the sealing performance of the device.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum booster with pump assembly, comprising a front housing (1) and a rear housing (2), characterized in that: The front shell (1) is clamped on one side of the rear shell (2); a bolt seat (17) is provided on the side of the front shell (1) away from the rear shell (2); a diaphragm partition (3) is movably provided between the front shell (1) and the rear shell (2); a limiting ring (4) is provided on one side of the rear shell (2) corresponding to the diaphragm partition (3); a return spring (5) is provided between the two limiting rings (4); and a rubber pad (6) is provided in the inner cavity of the limiting ring (4).

2. A vacuum booster belt pump assembly according to claim 1, characterized in that: A groove (7) is provided on one side of the rubber pad (6) close to the return spring (5), and the end of the return spring (5) is located in the inner cavity of the groove (7).

3. A vacuum booster belt pump assembly according to claim 1, characterized in that: The other side of the rear housing (2) is connected to a brake master cylinder (8), a brake oil tank (9) is arranged above the brake master cylinder (8), a push rod (10) is movably arranged in the inner cavity of the brake master cylinder (8), and a sealing plug (11) is sleeved on the outer ring of the push rod (10).

4. A vacuum booster belt pump assembly according to claim 1, characterized in that: A fixing ring (12) is provided on one side of the rear shell body (2) in the middle of the inner cavity of the limiting ring (4), a retaining ring (13) is provided at one end of the fixing ring (12), a sealing ring (14) is movably provided in the inner cavity of the fixing ring (12), and the sealing ring (14) is fixedly sleeved on the outer ring of the push rod (10).

5. A vacuum booster belt pump assembly according to claim 4, characterized in that: A fixing sleeve (15) is provided on both sides of the sealing ring (14), and a plurality of support rods (16) are distributed on the outer ring of the fixing sleeve (15).

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