CN214164964U

CN214164964U - Vacuum booster assembly

Info

Publication number: CN214164964U
Application number: CN202023328537.0U
Authority: CN
Inventors: 王军; 黄海生
Original assignee: Guangzhou Zhongbo Brake System Co ltd
Current assignee: Guangzhou Zhongbo Brake System Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-09-10
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a can improve vacuum booster assembly of footboard initial force. The proportional disc is positioned between the locking base and the feedback plate, and one end of the proportional disc is always contacted with the feedback plate. The gap between the stop base and the feedback plate is eliminated through the constant contact of the proportional disc and the feedback plate, and the pedal stroke is reduced. The stop base and the feedback plate are always in a pre-jacking state to generate reaction force, so that the initial force of the pedal is gradually increased along with the increase of the stroke, the pedal empty feeling in the initial stage of the pedal is eliminated, and a firm feeling is provided for a driver when the driver steps on the pedal. The utility model discloses can promote the vehicle and feel at braking initial stage driver braking foot, be linear increase when letting the power that the driver trampled the footboard from a contact footboard, eliminate the footboard and step on empty, brake shortcoming such as soft, but wide application in automobile brake system.

Description

Vacuum booster assembly

Technical Field

The invention relates to a booster assembly applied to an automobile brake device, in particular to a vacuum booster assembly capable of improving initial force of a pedal, and belongs to the field of automobile brake devices.

Background

With the rapid development of economic technology, the sales of automobiles are increasing. With the deep understanding of automobiles, the demands of automobiles are also growing synchronously. As one of the systems frequently operated during traveling, the subjective feeling of the brake system has a great influence on the driving comfort.

Braking of a motor vehicle refers to the process from the initiation of displacement of the brake pedal to the vehicle for braking purposes, deceleration or stopping. Pedal feel refers to the pedal force, pedal displacement and braking distance experienced by the driver throughout this process. The invention achieves the purpose of improving the pedal feeling by mainly controlling the pedal stroke and the pedal force.

The invention aims to improve the pedal feeling at the stage, namely the initial force of the pedal.

Disclosure of Invention

During braking of the vehicle, the pedal force can be divided into two phases.

At stage one, the pedal begins to displace to a jump value, during which the pedal force begins to increase to overcome the booster starting force. The pedal travel increases from zero to completely eliminate the brake clearance. This phase is referred to as the pre-braking phase, and the initial force phase of the pedal.

And a second stage, wherein the pedal force and the output hydraulic pressure (or the automobile deceleration) are in a linear relation.

The invention aims to improve pedal feeling through pedal force and pedal stroke in the control stage I, and provides a vacuum booster assembly.

The purpose of the invention is realized by the following technical scheme:

a vacuum booster assembly comprises a stopping base, a proportional disc and a feedback plate, wherein the proportional disc is positioned between the stopping base and the feedback plate, and one end of the proportional disc is always contacted with the feedback plate. One end of the proportional disc is always contacted with the feedback plate, so that the gap between the stop base and the feedback plate can be eliminated, the pedal stroke is reduced, and the hollow feeling of treading empty by the pedal is eliminated.

The one end that proportion dish and feedback plate meet is protruding, and this arch is pressed in advance on the feedback plate, and preferred arc is protruding, and the bellied arcwall face of arc is pressed on the feedback plate, can not cause the injury to the rubber feedback plate.

The other end of the proportional disc is always contacted with the stop base, so that the pedal stroke can be further reduced, and the hollow feeling of treading the pedal is eliminated.

The end of the proportional disc connected with the stop base is provided with a bulge, the bulge abuts against the stop base, and the circular truncated cone-shaped bulge is preferred.

The vacuum booster assembly further comprises an operating rod, and the operating rod is riveted with the stop base.

The vacuum booster assembly further comprises a push rod assembly, and the feedback plate is connected with the push rod assembly.

Compare with traditional booster, the utility model discloses a booster assembly has following advantage:

and (I) in the stage of eliminating the clearance of the booster and the idle stroke of the master cylinder, the pedal force is gradually increased along with the increase of the stroke, and the hollow feeling of pedal stepping is eliminated.

And (II) the proportional disc and the feedback plate are in a pre-contact structure, the deformation of the operating lever is increased in the motion process, the feedback force is gradually increased, meanwhile, the contact surface is changed from point contact to surface contact, the contact area is gradually increased along with the motion process, the process of sharp increase of the jump value is changed into a smooth slow increase process, and the pedal feeling is improved.

Drawings

FIG. 1 is an assembled schematic view of one embodiment of a vacuum booster assembly of the present invention;

FIG. 2 is a schematic structural view of the control valve assembly of embodiment 1;

in the figure: 1-operating lever, 2-stop base, 3-proportional disc, 4-feedback plate and 5-push rod assembly

Detailed Description

The invention will be further described with reference to the drawings and examples.

Example 1

A vacuum booster assembly as shown in fig. 1, 2, it includes control rod 1, locking base 2, proportion dish 3, feedback plate 4 and push rod assembly 5, control rod 1 is riveted with 2 one end of locking base, the one end of the 2 other ends of locking base and proportion dish 3 is contacted eventually, and the other end of proportion dish 3 contacts all the time with the one end of feedback plate 4, feedback plate 4 is connected with push rod assembly 5, the one end that proportion dish 3 and feedback plate 4 meet is the arc arch, and the bellied arcwall face of arc is pressed on feedback plate 4, and the one end that proportion dish 3 and locking base 2 contacted all the time is cylindrical protruding.

The proportional disk and the feedback plate of the embodiment are in point contact from the beginning, the deformation of the feedback plate is changed into surface contact along with the increase of the displacement of the operating rod, the contact area is gradually increased, when the feedback plate is in complete contact with the proportional disk, the booster enters a boosting stage, in the process, the output of the booster shows the trend of arc growth, the booster is different from the sharp increase trend of the traditional booster, and a better pedal feeling is given to people. The proportional disc is always contacted with the cylindrical protrusion of the stop base, so that the pedal stroke is further reduced, and the hollow feeling of treading the pedal is eliminated.

The above-mentioned embodiment describes only one of the embodiments of the present invention, and the description should not be interpreted as limiting the scope of the present invention, which can be implemented in the claims of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A vacuum booster assembly characterized by: the proportional disc is positioned between the locking base and the feedback plate, and one end of the proportional disc is always contacted with the feedback plate.

2. A vacuum booster assembly as set forth in claim 1 wherein: the end of the proportional disc connected with the feedback plate is a bulge, and the bulge is pre-pressed on the feedback plate.

3. A vacuum booster assembly as set forth in claim 2 wherein: the end of the proportion disc connected with the feedback plate is an arc-shaped bulge, and the bulge is pre-pressed on the feedback plate.

4. A vacuum booster assembly as set forth in claim 1, 2 or 3 wherein: the other end of the proportional disc is always contacted with the stop base.

5. A vacuum booster assembly as set forth in claim 4 wherein: and one end of the proportional disc, which is connected with the stop base, is protruded and the protrusion abuts against the stop base.

6. A vacuum booster assembly as set forth in claim 5 wherein: one end of the proportional disc, which is connected with the stop base, is a circular truncated cone-shaped bulge.

7. A vacuum booster assembly as set forth in claim 1, 2 or 3 wherein: it also includes an operating lever riveted to the stop base.

8. A vacuum booster assembly as set forth in claim 7 wherein: it still includes the push rod assembly, the feedback board is connected with the push rod assembly.