Worm gear and worm set with center distance adjustment and clearance elimination, brake and steering system

A worm gear, center distance technology, applied in the direction of gear transmission, belt/chain/gear, transmission, etc., can solve the problem of inconsistent transmission efficiency, improve transmission resistance and transmission efficiency. The effect of meshing clearance and stable transmission characteristics

Active Publication Date: 2017-06-13
上海同驭汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a worm gear, brake and steering system with center distance adjustment and clearance elimination in order to overcome the above-mentioned defects in the prior art, which can adjust the center distance of the worm gear in a small range, and can automatically eliminate the The meshing gap can effectively improve the problem of low consistency of transmission resistance and transmission efficiency caused by the center distance machining error and wear and tear, make the worm gear and worm transmission characteristics stable, the transmission smooth and smooth, reduce noise, and improve vehicle handling and performance. comfort

Method used

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  • Worm gear and worm set with center distance adjustment and clearance elimination, brake and steering system
  • Worm gear and worm set with center distance adjustment and clearance elimination, brake and steering system
  • Worm gear and worm set with center distance adjustment and clearance elimination, brake and steering system

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Effect test

Embodiment 1

[0034] Such as Figure 1~4 As shown, a worm gear with a center distance adjustment and clearance elimination mechanism, the two ends of the worm 11 are respectively installed in the housing through the first bearing 5 and the second bearing 12, and the end cover 7 is installed on the right side of the first bearing 5, Dustproof and waterproof. Wherein, the first bearing 5 is installed in the waist-shaped installation hole of the housing 2, and its cross-sectional shape is as follows: image 3 As shown, the first bearing 5 can move smoothly in a small range in the waist-shaped installation hole along the direction connecting the two semicircles of the waist-shaped hole through the axial limit of the first retaining ring 6 and the shaft shoulder of the housing 2. The second bearing 12 is installed in the installation hole of the housing 2 with a small clearance or wrapped with elastic material, and is axially limited by the second retaining ring 1 and the shaft shoulder of the ...

Embodiment 2

[0039] A hydraulic brake with a worm gear and worm with a center distance adjustment and clearance elimination mechanism as described in Embodiment 1, comprising a brake motor, a worm gear and a brake master cylinder connected in sequence, the worm 11 in the worm gear It is coaxially connected with the output shaft of the brake motor, and the worm gear 4 is connected with the piston of the brake master cylinder through transmission.

Embodiment 3

[0041]The worm gear described in Embodiment 1 can also be applied to an electric power steering system, including a booster motor, a worm, and a worm gear. The worm in the worm gear is coaxially connected to the output shaft of the booster motor, and the worm gear is coaxially connected to the steering column or steering gear.

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Abstract

The invention relates to a worm gear and worm set with a center distance adjustment and a clearance elimination mechanism. The worm gear and worm set comprise a worm gear (4) and a worm(11) which are mutually engaged and also comprises a shell body (2), a first bearing (5), a second bearing (12), and a fastening bolt (9), wherein the shell body(2 covers the worm gear (4) and the worm (11); the two ends of the worm set(11) are respectively arranged inside of the shell(2) through the first bearing(5) and the second bearing(12); the fastening bolt(9) passes through the shell and the bottom of the fastening bolt is centered on the outer ring of the first bearing (5); a pressing force is applied along the radial direction of the first bearing (5) so that the worm gear (4) is attached to the worm set(11). Compared with the prior art, the worm gear and worm set can solves the problems that the transmission resistance and the transmission efficiency of the central distance machining error and the use of abrasion are not consistent. The worm gear and worm set has the advantages that the worm gear driving has stable characteristics and smooth transmission; noises are reduced and the maneuverability and comfort of the car are improved.

Description

technical field [0001] The invention relates to a worm gear structure, in particular to a worm gear with center distance adjustment and gap elimination, a brake and a steering system. Background technique [0002] The braking system and the steering system are crucial systems related to the safety performance of the vehicle, and their performance will directly affect the driving safety performance of the vehicle. [0003] A traditional braking system usually consists of a brake pedal, vacuum booster, brake master cylinder, ESC / ABS, brake wheel cylinder and its corresponding pipelines. With the continuous improvement of fuel consumption and emission requirements, the vacuum degree that the newly designed engine can provide to the vacuum booster is becoming less and less. In order to make up for this problem caused by high-efficiency engines, many vehicles adopt an additional vacuum pump to increase the vacuum. For electric vehicles, there is no engine to provide a vacuum so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H1/16F16H57/12F16H57/021
CPCF16H1/16F16H57/021F16H57/12Y02E10/50
Inventor 舒强孟凡雪江琛裕潘光亮卫玮徐国栋崔天宝于洋王之昂史彪飞
Owner 上海同驭汽车科技有限公司
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