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Rotation detection sensor

一种检测传感器、检测部的技术，应用在测量仪器组件、仪器、采用电/磁装置传递传感构件等方向，能够解决电线恶化、检测精度下降、车轮速度传感器110密封性变差等问题

Inactive Publication Date: 2005-12-21
SUMITOMO ELECTRIC IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, if the melted hot-melt coating 103 intrudes into the detection part 107, it will cause deterioration of the internal wires, etc.
In addition, due to the melting of the hot-melt coating 103, the sealing performance of the wheel speed sensor 110, etc. is deteriorated, and the detection accuracy is reduced.

Method used

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  • Rotation detection sensor
  • Rotation detection sensor
  • Rotation detection sensor

Examples

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Embodiment Construction

[0025] A rotation detection sensor according to an embodiment of the present invention will be described. The rotation detection sensor detects the change of the magnetic field generated by the rotation of the object to be detected by the detection part, and converts it into an electric signal. The detection part is installed on the bracket. The detection unit is inserted through the opening of the capped cylindrical sleeve and attached to the cap side. The bracket part fits into the opening part.

[0026] The portion between the edge of the opening and the bracket is filled with a synthetic rubber-based solvent-based sealant over the entire circumference. Furthermore, the edge of the opening and the holder are covered with a resin part.

[0027] As the synthetic rubber-based solvent-based sealant, a viscoelastic liquid gasket can be used, for example, a viscoelastic liquid gasket manufactured by Sumitomo Triem Co., Ltd. or a viscoelastic liquid gasket manufactured by Semed...

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Abstract

A rotation detection sensor comprising a detection part (7) incorporated in a metal cylindrical sleeve (1) with a cover, and a bracket (2) fitted into an opening (1a) of the sleeve (1). At the opening end of the opening (1a) of the sleeve (1), a convex edge (11) is provided on the entire circumference, and a viscoelastic liquid is coated on the entire circumference between the convex edge (11) and the bracket (2). Gasket (sealing material) (12). The opening end of the opening (1a) of the sleeve (1) and the exposed bracket (2) are covered with a resin portion (4). Therefore, occlusion can be ensured by the viscoelastic liner (12) smoothly entering the gap between the cannula (1) and the bracket (2). In addition, the viscoelastic liner (12) has good processability due to its rapid hardening property of solvent volatilization, and forms a rubber-based elastic sealant after the solvent volatilizes.

Description

technical field [0001] The invention relates to a rotation detection sensor, in particular to a rotation detection sensor for detecting rotation such as an automobile wheel speed sensor and an engine revolution sensor. Background technique [0002] In order to detect the rotational speed of the vehicle wheels, for example, a wheel speed sensor is used. Here, a conventional wheel speed sensor will be described. like Figure 5 As shown, the detection part 107 of the wheel speed sensor 110 is inserted through the opening part 101a of the cylindrical sleeve 101 with a cover, and is attached to the cover side. The holder 102 made of resin is fitted into the opening 101a. [0003] Hot-melt paint 103 is applied to the part of the entire circumference between the edge of the opening 101a and the holder 102 to block it. Thereafter, the opening portion 101 a and the exposed portion of the holder 102 are covered with the resin portion 104 . [0004] Examples of the detection unit 1...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/12G01D11/24G01P1/02G01P3/488
CPCG01D11/245G01P1/026
Inventor 松本义文杉本雅司
Owner SUMITOMO ELECTRIC IND LTD
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