Electric actuator connected to a gearbox selector shaft by stepdown gearing

A technology of transmission mechanism and electric transmission, which is applied in the direction of electromechanical transmission, synchronous motor with rotating armature and stationary magnet, transmission control, etc. It can solve the problems of impact and vibration sensitivity, achieve high rotational torque and reduce clearance , the effect of reducing weight

Inactive Publication Date: 2008-06-25
TELEFLEX AUTOMOTIVE FRANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Compared with the devices in the prior art, the transmission mechanism has many advantages in reducing the weight and cost of the permanent magnet, reducing the weight and inertia of the coil, and reducing the response time of the transmission mechanism, etc., but it also has the advantages of being resistant to impact and vibration. Insufficient sensitivity because the coil is off-centre with respect to its axis of rotation

Method used

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  • Electric actuator connected to a gearbox selector shaft by stepdown gearing
  • Electric actuator connected to a gearbox selector shaft by stepdown gearing

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Embodiment Construction

[0030] The electric transmission mechanism shown in FIG. 1 mainly includes a housing 10 composed of a base 12 . The base 12 has a cover 14 positioned thereon and fastened with screws 16 . The base 12 and the cover 14 respectively have central holes for mounting bearings such as ball bearings 18 . The bearings serve to center the shaft 20 and guide its rotation. The rotating shaft 20 constitutes a support for the coil 22 and an output member of the transmission mechanism.

[0031] The coil 22 carried by the rotating shaft 20 is introduced to rotate between two flat permanent magnets 24, one of which is fastened to the inner surface of the top plate 26 of the magnetic yoke, and the other flat permanent magnet is fastened to the inner surface of the magnetic yoke. the upper surface of the bottom plate 28 .

[0032] The two plates 26, 28 and the flat permanent magnet 24 are disc-shaped, each having a central hole for the shaft 20 to pass through. Two plates 26, 28 and the flat...

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PUM

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Abstract

An electric actuator, in particular for driving a gearbox selector shaft, the actuator comprising a coil guided in rotation between two flat permanent magnets carried by yoke plates, the coil being centered on the rotary spindle and having an angular stroke lying in the range 90° to 180°, its rotary spindle being connected by stepdown gearing to the gearbox selector shaft.

Description

technical field [0001] The invention relates to an electric transmission mechanism, in particular to an electric transmission mechanism for driving a gear selection lever shaft of a gearbox. Background technique [0002] Applicant's application FR 05 / 07540 discloses an electric transmission for driving a selector lever shaft of an automotive gearbox, said transmission comprising a coil between two flat permanent magnets carried by a yoke guide the coil to rotate. [0003] The yoke comprises: top and bottom parallel plates each carrying a flat permanent magnet; an intermediate plate extending between the top and bottom plates; and an upstanding plate interconnecting the three plates, wherein the plates All are fan-shaped. [0004] The coil consists of turns of wire wound on an insulating support surrounding the middle plate of the yoke, capable of rotating about an axis of rotation parallel to the plate of the yoke, and passing through the center of the sector formed by sai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K51/00H02K49/06B60K20/00
CPCH02K7/116F16H2061/2853F16H61/32H02K1/182H02K26/00Y10T74/1556F16H63/26F16H63/3009F16H63/304H01F7/145H02K21/26
Inventor 雷福德·A·科克尔哈姆让-皮埃尔·巴兹
Owner TELEFLEX AUTOMOTIVE FRANCE
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