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Meshing encoder gear and sensor assembly

A sensor assembly and sensor technology, which is applied in converting sensor output, using electromagnetic/magnetic devices to transmit sensing components, instruments, etc., can solve problems such as extra and enlarging packaging space.

Inactive Publication Date: 2011-05-25
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Encoder wheel and sensor assembly require additional parts and increased packaging space

Method used

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  • Meshing encoder gear and sensor assembly
  • Meshing encoder gear and sensor assembly
  • Meshing encoder gear and sensor assembly

Examples

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Embodiment Construction

[0057] The following description is merely exemplary in nature and is not intended to limit the disclosure, its application, or uses in any way.

[0058] Referring to the drawings, wherein like reference numerals refer to like parts, figure 1 An example of a meshing encoder gear and sensor assembly 10 in accordance with the present invention is shown. Gear and sensor assembly 10 includes housing 12 , encoder gear 14 , pinion 16 and sensor 18 . More specifically, the encoder gear 14 and the pinion gear 16 are each rotatably supported by a pair of shafts 20 , 22 , which are rotatably supported by the housing 12 . The encoder gear 14 includes a plurality of gear teeth 24 each having a target surface 26 extending in a direction perpendicular to the axis of rotation 14A of the encoder gear 14 . The target surface 26 of each gear tooth 24 is magnetized to generate a magnetic field.

[0059]Sensor 18 is fixed or securely attached to wall 12A of housing 12 . The sensor 18 has an e...

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PUM

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Abstract

The ivention relates to a meshing encoder gear and a sensor assembly. A sensor assembly for a transmission includes a meshing encoder gear and an unbiased sensor. The gear teeth of the encoder gear have target surfaces that generate a magnetic field. The sensor targets the magnetized target surfaces to detect the magnetic field or the change in the magnetic field and sends a signal to a controller that is converted to a speed measurement of the encoder gear.

Description

technical field [0001] The present invention relates to meshing gears and sensors for use in mechanical devices, and more particularly, to gear and sensor assemblies included in automotive transmissions. Background technique [0002] This section merely provides background information related to the present disclosure, which may or may not constitute prior art. [0003] In mechanical devices (such as power transmissions, engines, or other machines), effective control of device operation often relies on controllers that receive data from sensors within the device. The transmission controller may, for example, require the rotational speed of an internal gear, shaft or other rotating member. Typically this is done using an encoder wheel rotationally fixed to such a shaft or member and a sensor aimed at the encoder wheel. Encoder wheels are required as additional parts to gears or shafts already used in the device. The encoder wheel includes target teeth that are detected by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/14
CPCG01D5/145G01D5/2451G01D2205/80
Inventor J·B·布拉德利
Owner GM GLOBAL TECH OPERATIONS LLC