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Encoder and motor with encoder

An encoder and coding technology, which is applied in the field of electric motors to improve reliability and facilitate assembly operations.

Active Publication Date: 2020-08-04
SANKYO SEIKI MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the output of the magnetic sensor and the amplification value of the output of the magnetic sensor composed of the encoder circuit mounted on the substrate may be affected by electrical noise such as frame ground noise and power supply noise of the motor body where the encoder is fixed.

Method used

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  • Encoder and motor with encoder
  • Encoder and motor with encoder
  • Encoder and motor with encoder

Examples

Experimental program
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Embodiment Construction

[0034] Next, embodiments of an encoder and a motor with an encoder to which the present invention is applied will be described with reference to the drawings. figure 1 It is an external perspective view of the motor 1 with an encoder provided with the encoder 10 of this invention. figure 2 is a sectional view of the encoder 10, the first bearing holder 42A, and the rotary shaft 2 ( figure 1 A-A sectional view) and its partial enlarged view, image 3 is a sectional view of the encoder 10, the first bearing holder 42A, and the rotary shaft 2 ( figure 1 BB sectional view). Figure 4 , Figure 5 is an exploded perspective view of the encoder 10, the first bearing holder 42A, and the rotary shaft 2, figure 2 It is an exploded perspective view viewed from the output opposite side L2, image 3 It is an exploded perspective view seen from the output side L1.

[0035] The motor 1 with an encoder includes: a motor 3 having a rotary shaft 2 ; and an encoder 10 that detects rotation...

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PUM

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Abstract

The invention provides an encoder and a motor with the encoder, which improve the reliability of electrical conduction between an encoder cover and the signal ground of an encoder circuit and improvethe workability of the assembly operation of the encoder cover. The encoder (10) is provided with: a conductive encoder cover (12) that covers a substrate (60) on which an encoder circuit is providedfrom the opposite side of a magnet (16); and a fixing member (125). The fixing member (125) is a conductive member and protrudes from the substrate (60) toward the side opposite to the magnet (16). Atleast one of the fixing members (125) is electrically connected to a signal ground of the encoder circuit. The encoder cover (12) is electrically connected to the signal ground by fitting the end ofthe fixing member (125) to the fixing hole (124) of the encoder cover (12), and the encoder cover (12) is fixed.

Description

technical field [0001] The present invention relates to an encoder for detecting the rotation of a rotor by a magnetic sensor, and a motor with the encoder. Background technique [0002] Patent Document 1 discloses a motor including an encoder for detecting rotation of a rotor. In the motor of Patent Document 1, the encoder includes a magnetic sensor mounted on a substrate and a magnet that rotates integrally with an output shaft of the motor. The base plate is supported by an encoder bracket fixed to the motor case. The substrate and the magnet on which the magnetic sensor is installed are covered by the encoder cover. The encoder cover is fixed to the inner surface of the encoder case fixed to the motor case. [0003] The encoder installed on the motor is affected by various noises, and the output may change depending on the environment in which the product is used, and the occurrence of angular errors may also change. For example, due to the influence of magnetic nois...

Claims

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Application Information

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IPC IPC(8): H02K11/215H02K11/01H02K5/10G01D5/14
CPCH02K11/215H02K11/01H02K5/10G01D5/142
Inventor 上條健斋藤豊中山裕次樋口大辅
Owner SANKYO SEIKI MFG CO LTD
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