CN212098805U

CN212098805U - Vacuum booster and vehicle

Info

Publication number: CN212098805U
Application number: CN202020855675.5U
Authority: CN
Inventors: 陈铨
Original assignee: Longfa Machinery Co ltd Chengd
Current assignee: Longfa Machinery Co ltd Chengd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-12-08
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a vacuum booster and vehicle. The vacuum booster comprises a diaphragm, a front shell and a rear shell, wherein a boss part is arranged at one end of the front shell, which is close to the rear shell, and a first horizontal section, an arc-shaped section and a second horizontal section which are sequentially connected are arranged at one end of the rear shell, which is close to the front shell; the end part of the diaphragm is an arc part matched with the front shell and the rear shell, and the edge of the arc part is positioned between the boss part and the arc section; the front shell and the rear shell are riveted and fixed, and riveting points are distributed on a first horizontal section on the left side of the boss part. This vehicle includes the brake master cylinder and the vacuum booster that this scheme provided, the brake master cylinder include with the procapsid between through bolted connection's cylinder body, install on the boss lateral wall of cylinder body with the annular arch at procapsid center support and lean on the complex sealing washer, install first chamber piston on the cylinder body, first chamber piston extends to outside the cylinder body and extend to the procapsid inboard, first chamber piston is located output push rod cooperation in the inboard one end of procapsid and the first body.

Description

Vacuum booster and vehicle

Technical Field

The utility model relates to a vehicle field, concretely relates to vacuum booster and vehicle.

Background

The vacuum booster is a component that uses vacuum (negative pressure) to increase the force applied to the pedal by the driver. The vacuum booster is arranged between the brake master cylinder and the brake pedal, and the vacuum is provided by an engine or a vacuum pump to realize boosting.

The vacuum booster includes a front housing and a rear housing, wherein the front housing is closer to the master cylinder. At present, the front shell and the rear shell are generally assembled in a screwing mode, but the front shell and the rear shell are easy to rotate and fall off in the screwing mode, and a diaphragm between the front shell and the rear shell is easy to cut in the screwing assembly process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a vacuum booster and vehicle to reduce the harm to the diaphragm when rotatory possibility that drops in procapsid and the back casing assembling process.

In order to achieve the purpose of the invention, the utility model adopts the technical scheme that:

the vacuum booster comprises a first body, a diaphragm, a front shell and a rear shell, wherein a boss part is arranged at one end of the front shell, which is close to the rear shell, and a first horizontal section, an arc-shaped section and a second horizontal section which are sequentially connected are arranged at one end of the rear shell, which is close to the front shell; the end part of the diaphragm is an arc part matched with the front shell and the rear shell, and the edge of the arc part is positioned between the boss part and the arc section; the front shell and the rear shell are fixedly riveted, riveting points formed by riveting and fixing are distributed on a first horizontal section on the left side of the boss part, the number of the riveting points is multiple, and all the riveting points are uniformly distributed in an annular shape.

On the other hand, a vehicle is provided, it includes the brake master cylinder and the vacuum booster that this scheme provided, the brake master cylinder include with the procapsid between through bolted connection's cylinder body, install on the boss lateral wall of cylinder body and lean on the complex sealing washer with the annular bulge at procapsid center, install first chamber piston on the cylinder body, first chamber piston extends to outside the cylinder body, and extend to the procapsid inboard, the central line of first chamber piston and the central line of sealing washer and the bellied central line coincidence of annular, first chamber piston is located the inboard one end of procapsid and is seted up with output push rod complex recess in the first body.

The utility model has the advantages that:

realize the riveting of procapsid and back casing based on boss portion, first horizontal segment, segmental arc and second horizontal segment and fix to the damage to the diaphragm has been reduced when having reduced the rotatory possibility that drops in procapsid and the back casing assembling process.

Part first chamber piston in the brake master cylinder is located the front housing, and then has reduced the shared total volume of brake master cylinder and vacuum booster to the installation of other spare parts provides bigger space in the vehicle.

Drawings

FIG. 1 is a cross-sectional view of a vacuum booster in an exemplary embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a partial cross-sectional view of a brake master cylinder and oil can in an exemplary embodiment;

fig. 4 is a schematic structural diagram of the cooperation of bitmap 1 and fig. 3.

Wherein, 1, a front case; 11. an annular projection; 12. a boss portion; 2. a rear housing; 21. a first horizontal segment 22, an arc segment; 23. a second horizontal segment; 31. a rod body; 32. an adjusting screw; 33. locking the nut; 4. a membrane; 41. an arc-shaped portion; 51. a cylinder body; 52. a first chamber piston; 53. a seal ring; 6. an oil can; 7. an input pusher bar assembly.

Detailed Description

The following detailed description of the present invention will be made with reference to the accompanying drawings so as to facilitate the understanding of the present invention by those skilled in the art. It should be understood that the embodiments described below are only some embodiments of the invention, and not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step, without departing from the spirit and scope of the present invention as defined and defined by the appended claims, fall within the scope of protection of the invention.

As shown in fig. 1 and 2, the vacuum booster includes a first body, a diaphragm 4, a front housing 1 and a rear housing 2, one end of the front housing 1 near the rear housing 2 is a boss portion 12, and one end of the rear housing 2 near the front housing 1 is a first horizontal section 21, an arc-shaped section 22 and a second horizontal section 23 which are connected in sequence; the end of the diaphragm 4 is an arc-shaped part 41 which is matched with the front shell 1 and the rear shell 2, and the edge of the arc-shaped part 41 is positioned between the boss part 12 and the arc-shaped section 22; the front shell body 1 and the rear shell body 2 are riveted and fixed, riveting points formed by riveting and fixing are distributed on the first horizontal section 21 on the left side of the boss portion 12, the number of the riveting points is multiple, and all the riveting points are distributed uniformly in an annular shape.

The first body herein refers to a portion of the vacuum booster other than the diaphragm 4, the front case 1, and the rear case 2. In the first embodiment, in order to ensure the edge pressing force of the membrane 4 and ensure that the membrane 4 does not slide off in use, as shown in fig. 2, the riveting height is 9mm (the dimension is marked in fig. 2), and the number of the riveting points is 12.

As shown in fig. 1, in order to adjust the overall length of the output push rod, and thus adapt to different types of master cylinders, the output push rod in the first body includes a rod body 31, one end of the rod body 31 close to the front housing 1 is connected with an adjusting screw 32 through a thread pair, and two locking nuts 33 are installed on the portion of the adjusting screw 32 extending out of the rod body 31.

On the other hand, a vehicle is provided, which includes a brake master cylinder and a vacuum booster provided by the present scheme, as shown in fig. 1, fig. 3 and fig. 4, the brake master cylinder includes a cylinder body 51 connected with the front housing 1 through a bolt, a sealing ring 53 abutting against the annular protrusion 11 at the center of the front housing 1 is installed on a boss side wall of the cylinder body 51, a first cavity piston 52 is installed on the cylinder body 51, the first cavity piston 52 extends out of the cylinder body 51 and extends to the inner side of the front housing 1, the center line of the first cavity piston 52 coincides with the center line of the sealing ring 53 and the center line of the annular protrusion 11, and a groove matched with the output push rod in the first body is opened at one end of the first cavity piston 52 located at the inner side. Wherein, oilcan 6 is installed in the brake master cylinder on the oil feed connector, and the input push rod subassembly 7 is kept away from the one end of procapsid 1 and is connected with the brake pedal.

The above arrangement provides a vacuum chamber communicating between the cylinder 51, the first chamber piston 52, the seal ring 53, the front housing 1 and the diaphragm 4. Meanwhile, part of the first cavity piston 52 in the brake master cylinder is located on the inner side of the front shell 1 (the mode that the traditional first cavity piston 52 is completely located outside the vacuum chamber on the inner side of the front shell 1 is changed), and therefore the total volume occupied by the brake master cylinder and the vacuum booster is reduced, and a larger space is provided for installation of other parts in the vehicle.

Claims

1. A vacuum booster comprises a first body and is characterized by comprising a diaphragm (4), a front shell (1) and a rear shell (2), wherein a boss part (12) is arranged at one end, close to the rear shell (2), of the front shell (1), and a first horizontal section (21), an arc-shaped section (22) and a second horizontal section (23) which are sequentially connected are arranged at one end, close to the front shell (1), of the rear shell (2); the end part of the diaphragm (4) is an arc part (41) matched with the front shell (1) and the rear shell (2), and the edge of the arc part (41) is positioned between the boss part (12) and the arc section (22); the front shell (1) and the rear shell (2) are riveted, riveting points formed by riveting are distributed on a first horizontal section (21) on the left side of the boss part (12), the number of the riveting points is multiple, and all the riveting points are uniformly distributed in an annular shape.

2. A vacuum booster as claimed in claim 1 wherein the rivet height is 9 mm.

3. A vacuum booster as set forth in claim 1 wherein said rivet points are 12.

4. A vacuum booster as claimed in any one of claims 1 to 3, wherein the output push rod of the first body comprises a rod body (31), one end of the rod body (31) close to the front case (1) is connected with a screw thread pair between an adjusting screw (32), and two locking nuts (33) are arranged on the part of the adjusting screw (32) extending out of the rod body (31).

5. A vehicle, characterized by, include the brake master cylinder and the vacuum booster of any one of claims 1-4, the brake master cylinder includes the cylinder body (51) through bolted connection between with the procapsid (1), install on the boss lateral wall of cylinder body (51) and lean on complex sealing washer (53) with the annular bulge (11) at procapsid (1) center, install first chamber piston (52) on cylinder body (51), first chamber piston (52) extend to outside cylinder body (51) and extend to procapsid (1) inboard, the central line of first chamber piston (52) and the central line of sealing washer (53) and the coincidence of the central line of annular bulge (11), the one end that first chamber piston (52) are located procapsid (1) inboard is seted up and is exported the recess that the push rod cooperateed in the first body.