CN110736485A - Magnetic encoder and method of mounting the same - Google Patents
Magnetic encoder and method of mounting the same Download PDFInfo
- Publication number
- CN110736485A CN110736485A CN201910171540.9A CN201910171540A CN110736485A CN 110736485 A CN110736485 A CN 110736485A CN 201910171540 A CN201910171540 A CN 201910171540A CN 110736485 A CN110736485 A CN 110736485A
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- China
- Prior art keywords
- magnetic encoder
- support member
- screw
- pin
- mounting
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- 238000000034 method Methods 0.000 title claims description 10
- 238000001514 detection method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The invention provides structures capable of easily and stably mounting a magnetic encoder for a long period of time.A magnetic encoder (10) is provided with a pin (13) for positioning the magnetic encoder (10) to a support member, and a screw hole (14) for fastening and fixing the magnetic encoder (10) to the support member.A magnetic encoder (10) is positioned to the support member by engaging the pin (13) with a hole portion of the support member, and the support member and the magnetic encoder (10) are fastened and fixed to each other by inserting a screw member into the screw hole (14).
Description
Technical Field
The invention relates to magnetic encoders and a mounting method thereof.
Background
The magnetic encoder is used to detect the rotation state (rotation angle, rotation speed, etc.) of the gear, etc. An example of a magnetic encoder and a method of mounting the same is described in patent document 1.
However, the conventional technique has a problem that it is difficult to precisely fix the positional relationship between the magnetic encoder and the magnet to be detected.
For example, a gap between a detection surface of the magnetic encoder and a magnet (gear or the like) to be detected may be as narrow as 0.2 to 1.0mm, which makes precise mounting difficult. Further, in the case of fixing by a screw, it is also conceivable that the positional relationship between the magnetic encoder and the magnet changes with time over time.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2001-317966
Disclosure of Invention
Problems to be solved by the invention
The present invention has been made to solve the above problems, and an object thereof is to provide kinds of structures in which a magnetic encoder can be easily and stably mounted for a long period of time.
Means for solving the problems
The magnetic encoder of the present invention includes:
a protrusion for positioning the magnetic encoder to a support member; and
a screw hole for fastening and fixing the magnetic encoder to the support member,
according to a specific aspect, the magnetic encoder includes a plurality of the protrusions, and the protrusions extend in parallel to each other.
Further, the method of the present invention is methods for attaching a magnetic encoder including a protrusion and a screw hole to a support member, the method including:
positioning the magnetic encoder to the support member by engaging the protrusion with the hole of the support member; and
and a step of inserting a screw member into the screw hole to fasten and fix the support member and the magnetic encoder to each other.
Effects of the invention
According to the magnetic encoder and the mounting method thereof of the present invention, the magnetic encoder can be easily and stably mounted for a long period of time because the magnetic encoder can be positioned by the projection portion before the screw fixing.
Drawings
Fig. 1 is a diagram showing a configuration example of a magnetic encoder according to embodiment 1 of the present invention.
Fig. 2 is a view seen from the direction II of fig. 1.
Fig. 3 is a diagram showing an example of a positional relationship between the magnetic encoder of fig. 2 and a magnet to be detected.
Description of the reference numerals
10: a magnetic encoder; 13: a pin (protrusion); 14: threaded holes (screw holes).
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1.
Fig. 1 and 2 show a configuration example of a magnetic encoder 10 according to embodiment 1 of the present invention. Fig. 2 is a view seen from the direction II of fig. 1. The magnetic encoder 10 is disposed in association with a magnet to be detected, and can detect the state of the magnet. The magnet is, for example, a rotor or a gear of an electric motor, but may be other components or devices. As the motor, for example, a hoisting motor of an elevator is conceivable, but other motors may be used.
The magnetic encoder 10 includes a main body 11 and a flange 12. The magnetic encoder 10 is illustrated with only a housing, and a sensing element is disposed inside the main body 11. In the present embodiment, the magnetic encoder 10 is attached and fixed to a support member (not shown) via the flange 12. In this manner, a magnetic encoder structure including the magnetic encoder 10 and the support member is manufactured.
The magnetic encoder 10 includes at least pins 13, in the present embodiment, a plurality of (e.g., two) pins 13 are provided, each pin 13 extends in a direction parallel to each other (e.g., the left-right direction of the paper in fig. 1), the pin 13 is attached to the flange 12, for example, and the pin 13 is an example of a protrusion for positioning the magnetic encoder 10 to the support member.
The magnetic encoder 10 includes at least screw holes 14, and in the present embodiment, a plurality of (e.g., two) screw holes 14 are provided, the axes of the screw holes 14 are parallel to each other, and the screw holes 14 are examples of screw holes for fastening and fixing the magnetic encoder 10 to a support member, that is, a threaded member such as a screw is inserted into and screwed into the screw holes 14, whereby the magnetic encoder 10 (more precisely, the flange 12) and the support member are fastened and fixed.
The magnetic encoder 10 is provided with a cable 15 (shown only in fig. 1). The cable 15 can be connected to a power supply, a control device, and the like, which are not shown. Power may be supplied to the magnetic encoder 10 via a cable 15. The control signal and the detection signal of the magnetic encoder 10 may be transmitted and received via the cable 15.
The magnetic encoder 10 includes a detection surface 16. The magnetic encoder 10 detects the magnetic flux passing through the detection surface 16, thereby detecting the condition of the magnet.
Fig. 3 shows an example of the positional relationship between the magnetic encoder 10 and the gear 20. The gear 20 is an example of a magnet as a detection target. In this example, the gear 20 is disposed close to the detection surface 16, and the magnetic encoder 10 detects the rotation state of the gear 20 via the detection surface 16. The details of the shape of the gear 20 are not shown, and the gap between the detection surface 16 and the gear 20 is, for example, 0.2 to 1.0 mm.
A method of mounting the magnetic encoder 10 will be described. A hole portion into which the pin 13 can be engaged is formed in the support member to which the magnetic encoder 10 is attached. First, the pin 13 is engaged with the hole of the support member. For example, the pin 13 is inserted into the hole portion until the flange 12 comes into contact with the support member. Thereby, the magnetic encoder 10 is positioned to the support member. The hole of the support member may be formed in a shape such as a groove, a recess, or a through hole into which the pin 13 can be inserted.
The specific structure of the engagement of the pin 13 with the hole portion may be appropriately designed by those skilled in the art, and may be, for example, a fitting structure. In this way, the magnetic encoder 10 and the support member are prevented from being displaced in a direction not parallel to the axis of the pin 13, and the positional accuracy is improved.
In the case where a plurality of pins 13 are provided as in the present embodiment, the supporting members with which the respective pins 13 engage need not be the same members, and the supporting members may be fixed to each other as a whole.
Subsequently, a screw member (screw or the like), not shown, is inserted into the screw hole 14 and screwed. Thereby, the support member and the magnetic encoder 10 are fastened and fixed to each other. Since the magnetic encoder 10 and the support member are already precisely positioned by the pin 13, precise position adjustment is not necessary in the screwing operation, and the mounting operation is easy. Further, since the fixation of the magnetic encoder 10 to the support member is made firm by the fastening fixation, the mutual positional relationship is stable for a long period of time.
In particular, in the present embodiment, the pins 13, the screw holes 14, and the gear 20 are all arranged in parallel. By the positioning effect achieved by the pin 13, the relative positional relationship of the shaft of the gear 20 and the magnetic encoder 10 is stabilized regardless of the fastening strength of the screw.
In recent years, there are many design fields in which the life of devices and the like is required to be extended, and a structure capable of suppressing long-term change as in embodiment 1 can be applied to other designs as well as .
Claims (3)
1, A magnetic encoder, comprising:
a protrusion for positioning the magnetic encoder to a support member; and
a screw hole for fastening and fixing the magnetic encoder to the support member.
2. The magnetic encoder of claim 1,
the magnetic encoder includes a plurality of the protrusions, and the protrusions extend in parallel to each other.
3, A method for mounting a magnetic encoder having a protrusion and a screw hole on a support member, comprising:
positioning the magnetic encoder to the support member by engaging the protrusion with the hole of the support member; and
and a step of inserting a screw member into the screw hole to fasten and fix the support member and the magnetic encoder to each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018135058A JP2020012730A (en) | 2018-07-18 | 2018-07-18 | Magnetic encoder and method for attaching the same |
| JP2018-135058 | 2018-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110736485A true CN110736485A (en) | 2020-01-31 |
Family
ID=69170881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910171540.9A Pending CN110736485A (en) | 2018-07-18 | 2019-03-07 | Magnetic encoder and method of mounting the same |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2020012730A (en) |
| CN (1) | CN110736485A (en) |
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| JPH08338850A (en) * | 1995-06-14 | 1996-12-24 | Hitachi Ltd | Rotation sensor |
| CN1696614A (en) * | 2004-05-12 | 2005-11-16 | 安捷伦科技有限公司 | Optical encoder and alignment jig |
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| CN101187404A (en) * | 2002-10-28 | 2008-05-28 | 日本精工株式会社 | Bearing device with sensor and rolling bearing with sensor |
| CN1696614A (en) * | 2004-05-12 | 2005-11-16 | 安捷伦科技有限公司 | Optical encoder and alignment jig |
| CN101248439A (en) * | 2005-07-16 | 2008-08-20 | 布鲁斯·S·塞德利 | Mechanical device to encode magnetic cards |
| CN1967154A (en) * | 2005-11-14 | 2007-05-23 | 光洋电子工业株式会社 | Magnetic coder |
| CN201664705U (en) * | 2010-03-10 | 2010-12-08 | 河北钢铁股份有限公司邯郸分公司 | Loop encoder bracket of hot continuous rolling machine |
| CN103732353A (en) * | 2011-08-19 | 2014-04-16 | 株式会社安川电机 | Encoder manufacturing equipment, encoder manufacturing method, and servo motor manufacturing method |
| CN104654998A (en) * | 2013-11-22 | 2015-05-27 | 新东工业株式会社 | Movement amount detection apparatus of mobile components of mold modeling apparatus |
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| CN107449450A (en) * | 2017-09-09 | 2017-12-08 | 尔智机器人（上海）有限公司 | A kind of magnetism encoder and joint |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2020012730A (en) | 2020-01-23 |
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