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Encoders, Encoder Installation Methods, Encoder Replacement Methods, and Motor Units

An installation method and an encoder technology, which are applied in the field of encoders, can solve problems such as the difficulty in the concentricity of the motor shaft and the concave structure, and the cost of man-hours, and achieve the effect of simplifying installation or replacement operations

Active Publication Date: 2016-05-11
NIKON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, when the dimple structure is provided on the motor side, there are problems in that it takes man-hours to process the motor and that it is difficult to precisely form the concentricity between the motor shaft and the dimple structure.

Method used

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  • Encoders, Encoder Installation Methods, Encoder Replacement Methods, and Motor Units
  • Encoders, Encoder Installation Methods, Encoder Replacement Methods, and Motor Units
  • Encoders, Encoder Installation Methods, Encoder Replacement Methods, and Motor Units

Examples

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no. 1 approach

[0039] An encoder is a device that detects the rotation speed and rotation speed of a rotating body (motor device) such as a motor. figure 1 It is a cross-sectional view showing the overall structure of the encoder 100 according to the first embodiment, and is a view showing a state before being mounted on a motor. Such as figure 1 As shown, the encoder 100 has a mounting member 3, a housing (main body) 4, a detection portion (substrate portion) 30, a disc portion 15, and a cover mounted on the housing 4 in a state covering the detection portion 30. part (body part) 16 .

[0040] The detection unit 30 has a detection substrate 5 and an optical sensor (detection unit) 8 . In one example, the detection substrate 5 is a circular plate-shaped member when viewed from above. In the present embodiment, the detection unit 30 irradiates light to the light reflection pattern (dial) 10 formed on the disc portion (rotation unit) 15, and the light sensor 8 detects the reflected light fr...

no. 2 approach

[0083] Next, the structure of the second embodiment of the present invention will be described. In addition, the difference between the present embodiment and the first embodiment is that a retaining ring is not used as an attachment member, and other configurations are the same. Therefore, in the following description, the description of the same members and structures as those of the first embodiment will be omitted or simplified.

[0084] Figure 7 is a diagram showing the overall configuration of the encoder of this embodiment, Figure 7 (a) is a cross-sectional view of the encoder, Figure 7 (b) is a plan view showing the structure of the main part of the encoder.

[0085] Encoder 200, such as Figure 7 As shown in (a), it has the attachment member 50, the case 4, the detection part 30, the disc part 15, and the cover part 16 similarly to the structure of 1st Embodiment.

[0086] The mounting member 50 of the present embodiment is constituted by a fixing member 51 . ...

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Abstract

An encoder is provided with a body section comprising a detection section, and a disc section comprising a pattern. The disc section comprises a first face to be used for positioning the body section with respect to the disc section, and a second face to be used for positioning the disc section with respect to the rotation axle that is the object to be measured. At least a portion of the first face is positioned at the outer side in the diameter direction in comparison to the pattern.

Description

technical field [0001] The present invention relates to an encoder, an encoder installation method, an encoder replacement method and a motor device. [0002] This application claims priority based on Japanese Patent Application No. 2011-139356 for which it applied on June 23, 2011, and uses the content here. Background technique [0003] For example, an encoder is known as a device for detecting the rotational speed and rotation angle of a rotating body such as a rotating shaft of a motor (Patent Document 1). An encoder is used, for example, by being attached to a rotating shaft of a motor (measurement object). As an example of an encoder, by rotating a rotating part (disc part) formed with a predetermined light reflecting pattern and a magnetic pattern integrally with a rotating shaft, the light reflecting pattern is irradiated with light to read reflected light and detect, for example, the magnetic pattern. changes, the rotational speed and rotation angle of the motor's...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/22G01D5/244G01D5/347
CPCG01D5/34738G01D5/24442H02K11/22
Inventor 三桥雄一渡边昭宏大野康
Owner NIKON CORP
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