CN216069955U - Support structure of electronic brake booster unit - Google Patents

Abstract

The utility model relates to a support structure of an electronic brake booster device, and belongs to the field of automobile brake systems. The slider passes through the recess joint of buckle and support, and platform on the slider is laminated after the assembly with the platform in the support. The advantage is novel structure, be the improvement to current electron booster supporting structure, wherein the support is nylon and glass fiber material injection moulding, the slider is wear-resisting and more smooth material of polyformaldehyde, the support passes through the buckle assembly as an organic whole with the slider, support after optimizing, make booster mechanism more trend simplistic, the lightweight, and reduce unnecessary spare part, reduce product cost, on guaranteeing electron booster's gear system, nut screw mechanism, supporting mechanism's integrality, make its structure more stable, wholly more reliable.

Description

Support structure of electronic brake booster unit

Technical Field

The utility model belongs to the field of automobile brake systems, and particularly relates to a support structure of an electronic brake booster device.

Background

In an electronic brake booster, in order to achieve motor boosting instead of vacuum boosting, a gear system and nut-and-screw mechanism and a bracket mechanism are generally used inside the booster assembly. When the motor carries out the helping hand, through gear system with the motor moment of torsion increase, turn into rectilinear motion with the moment of torsion through nut screw mechanism and mounting mechanism, satisfy braking system demand.

The traditional support mechanism of the brake-by-wire electronic booster consists of a metal support and a sliding block, and has the functions of inhibiting a screw rod component from rotating along with the rotation of a transmission nut, simultaneously, the sliding block axially slides on a guide rod to keep the stability of the overall motion, and the sliding block is a plastic piece and has a slide way, so that the sliding block can transversely slide on the support, and the flexibility of the booster during working is ensured.

In the prior art, a booster support is made of metal and is matched with a sliding block, a positioning pin and the like to move, and when the sliding block is assembled, the positioning pin is matched with a hot melting process to fix the sliding block on one side. The design has higher requirement on the matching precision of the bracket and the sliding block. In order to ensure that the sliding block and the bracket are not blocked when sliding relatively, the requirements on the roughness and the flatness of the punched edge of the bracket and the sliding way plane of the sliding block are higher. Meanwhile, the metal support has heavy weight, and is complex in matching with the sliding block and parts and process. Even so, also there is the jamming that the slider was worn and torn the card that brings when sliding or for a long time, leads to the booster whole card to die and become invalid or efficiency reduces.

Disclosure of Invention

The utility model provides a support structure of an electronic brake booster unit, which aims to solve the problems of heavy weight, higher matching precision requirement, easy clamping and failure of the existing metal support and sliding block mechanism.

The technical scheme adopted by the utility model is as follows: the slider passes through the recess joint of buckle and support, and platform on the slider is laminated after the assembly with the platform in the support.

The bracket is made of nylon and glass fiber materials through injection molding.

The sliding block is made of a polyformaldehyde material.

The sliding block is provided with two avoidance grooves and three bosses matched with the guide rod.

The utility model has the advantages of novel structure and improvement on the structure of the existing electronic booster bracket, wherein the bracket is made of nylon and glass fiber materials by injection molding, the sliding block is made of polyformaldehyde wear-resistant and smoother materials, the bracket and the sliding block are assembled into a whole through a buckle, the sliding block is of a special-shaped symmetrical structure, and is provided with two avoiding grooves and three bosses matched with the guide rod. The support after optimizing makes booster mechanism more become simplistic, lightweight to reduce unnecessary spare part, reduce product cost, on guaranteeing electronic booster's gear system, nut screw mechanism, the integrality of mounting mechanism, make its structure more stable, whole more reliable.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic structural view of the stent of the present invention;

FIG. 5 is a front view of the stand of the present invention;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a cross-sectional view C-C of FIG. 5;

FIG. 8 is a schematic view of the slider configuration of the present invention;

FIG. 9 is a front view of the slider of the present invention;

FIG. 10 is a top view of FIG. 9;

FIG. 11 is an assembled view of the bracket, slide and guide bar of the present invention;

fig. 12 is a state diagram of the present invention installed in the electronic booster.

Detailed Description

As shown in fig. 1-3, a sliding block 2 is clamped with a groove 101 of a bracket 1 through a buckle 201, and a platform 202 on the sliding block 2 is attached to a platform 102 in the bracket 1 after assembly;

the bracket 1 is made of nylon and glass fiber materials through injection molding;

the sliding block 2 is made of a wear-resistant smooth material of polyformaldehyde;

as shown in fig. 8 to 10, the slider 2 has two avoiding grooves 203 and three bosses 204 engaged with the guide bar.

Principle of operation

As shown in FIG. 12, when the present invention is installed in an electronic booster, the drive nut 3 is engaged with the screw rod 4 by a screw thread; the screw rod 4 and the support plate 5 are connected into a whole through laser welding; the bracket 1 and the sliding block 2 are a combined piece formed by buckling and clamping, and the bracket 1 and the supporting plate 5 are in interference fit; the guide rods 7 of the slide block 2 are in clearance fit and can slide relatively;

as shown in fig. 4-7, the structure of the bracket 1 is changed, firstly, the structure is changed from metal stamping to injection molding, and secondly, the structure is designed to be integrated with the sliding block in a buckling connection manner, so that the system strength is ensured;

as shown in fig. 8-10, the buckle 201 of the slider 2 can be directly press-fitted into the groove 101 of the bracket 1 during fitting, and the mounting is simple; the sliding block 2 is provided with a platform 202 which is attached to the platform 102 in the bracket 1 after assembly, so that the strength requirement of the product is ensured;

as shown in fig. 9 and 10, the slider 2 is designed to avoid two grooves 203 and three bosses 204 matched with the guide rods, the slider 2 is in clearance fit with the guide rods 7, the two grooves 203 can avoid the shrinkage phenomenon caused by injection molding, and when the two grooves slide relatively, the bosses 204 avoid the surface contact between the slider 2 and the guide rods 7 to cause clamping stagnation.

During assembly, the sliding block 2 is only required to be pressed down into the groove of the bracket 1 and clamped, the assembled integrated structure is placed between the two guide rods 7, and the whole central mechanism can be freely dropped to complete assembly;

if the electronic booster needs to actively work, the motor needs to work to transmit torque to the helical gear 6 through the secondary reduction gear, and the helical gear 6 and the transmission nut 3 transmit the torque through a regular hexagon; at the moment, due to the action of the bracket 1, the sliding block 2 and the guide rod 7, the screw rod 4 cannot rotate along with the transmission nut 3 but moves along a straight line, so that the screw transmission of converting torque into thrust is realized, and assistance is formed.

Claims (4)

1. The utility model provides a supporting structure of electronic braking booster unit which characterized in that: the slider passes through the recess joint of buckle and support, and platform on the slider is laminated after the assembly with the platform in the support.

2. A support structure of an electric brake booster according to claim 1, characterized in that: the bracket is made of nylon and glass fiber materials through injection molding.

3. A support structure of an electric brake booster according to claim 1, characterized in that: the sliding block is made of a polyformaldehyde material.

4. A support structure of an electric brake booster according to claim 1 or 3, characterized in that: the slider has two dodge recesses and three and guide bar complex boss.

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