CN106931996B - Encoder - Google Patents
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- Publication number
- CN106931996B CN106931996B CN201710262054.9A CN201710262054A CN106931996B CN 106931996 B CN106931996 B CN 106931996B CN 201710262054 A CN201710262054 A CN 201710262054A CN 106931996 B CN106931996 B CN 106931996B
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- Prior art keywords
- bracket
- encoder
- micro
- electronic component
- strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000005405 multipole Effects 0.000 claims abstract description 27
- 230000005415 magnetization Effects 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 4
- 238000010615 ring circuit Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- 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
- G01D5/14—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 influencing the magnitude of a current or voltage
- G01D5/142—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 influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/147—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 influencing the magnitude of a current or voltage using Hall-effect devices influenced by the movement of a third element, the position of Hall device and the source of magnetic field being fixed in respect to each other
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Abstract
The application discloses encoder for set up on the motor, include: a multipolar magnetic ring which can be sleeved on the power output shaft of the micro-special motor; the annular electronic component is sleeved outside the multi-pole magnetic ring; the annular support is provided with a mounting hole for connecting the electronic component and a strip-shaped hole for connecting the micro-special motor. The encoder provided by the invention has different structures from the existing encoder, not only enriches the variety of the encoder, but also can be adapted to a novel micro-special motor, meets the use requirements of the micro-special motor for more diversification, and expands the application range of the encoder.
Description
Technical Field
The invention relates to the technical field of encoders, in particular to an encoder.
Background
The encoder is one of key components of a micro-motor (micro special motor refers to a motor with a diameter smaller than 160mm or rated power smaller than 750W or special performance and special purpose), and is mainly used for measuring the rotating speed of the micro-motor so as to ensure the smooth operation of the micro-motor.
The encoder generally comprises an electronic component, a magnetic ring and a bracket, wherein the electronic component is used for data processing, the magnetic ring is sleeved on an output shaft of the micro-motor and used for measuring the rotating speed of the micro-motor, and the bracket plays a role of supporting the electronic component and connecting the electronic component to the micro-motor. In the prior art, due to different purposes and application environments, the structures of the encoders are various and very different, and the encoders are designed according to the installation requirements of some common micro-special motors, and according to some novel multi-pole micro-special motors, the encoders with the existing structures cannot meet the installation and connection requirements of the novel micro-special motors due to the self structural limitation, so that the encoders with the novel structures are required to be designed to meet the diversified use requirements.
Disclosure of Invention
In view of this, the invention provides a novel encoder, which not only enriches the variety of the encoder, but also meets the use requirements of micro-motors.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an encoder for placement on an electric machine, comprising:
a multipolar magnetic ring which can be sleeved on the power output shaft of the micro-special motor;
the annular electronic component is sleeved outside the multi-pole magnetic ring;
the annular support is provided with a mounting hole for connecting the electronic component and a strip-shaped hole for connecting the micro-special motor.
Preferably, in the encoder, the pole pair number of the multipole magnet ring is the same as the pole pair number of the micro-motor, or the pole pair number of the micro-motor is an integer multiple of the pole pair number of the multipole magnet ring.
Preferably, in the above encoder, the magnetizing direction of the multipole magnet ring is a radial multipole or a planar multipole.
Preferably, in the above encoder, the electronic component includes a ring circuit board and a plurality of hall elements disposed on the ring circuit board, the hall elements are uniformly distributed in a circumferential direction of the ring circuit board, an electrical angle between any adjacent two of the hall elements is α degrees with respect to the multi-stage magnetic ring, and α=90+360×n, n is an integer.
Preferably, in the encoder, the hall element is a plug-in hall element or a patch hall element.
Preferably, in the encoder, the bar-shaped hole is an arc-shaped bar hole extending along an arc line in the circumferential direction of the bracket, and the center of the arc line is the center of the bracket.
Preferably, in the above encoder, a plurality of convex plates protruding toward the center of the circle of the bracket are provided on the inner edge of the bracket, and the plurality of mounting holes are provided on the convex plates one by one.
Preferably, in the encoder, the mounting hole is a threaded hole capable of being engaged with a screw.
Preferably, in the above encoder, the protruding plate is a semicircular protruding plate, the mounting hole is formed in a central portion of the protruding plate, and the protruding plate and the bracket are integrally formed.
Preferably, the encoder further comprises a plurality of adjustment holes formed in the bracket, and the adjustment holes and the bar-shaped holes are arranged at intervals in the circumferential direction of the bracket.
The encoder provided by the invention is mainly used for being matched with a novel micro-special motor with an outer rotor multi-pole structure, and comprises a multi-pole magnetic ring, an electronic component and a bracket for connecting the electronic component to the micro-special motor. After the encoder is mounted on the micro-special motor, the multipolar magnetic ring can be sleeved on the power output shaft of the micro-special motor, the electronic component is sleeved on the outer side of the multipolar magnetic ring while being fixed on the bracket, and the bracket is specially designed into a ring shape for being matched with the novel micro-special motor and the annular electronic component, and a mounting hole for connecting the electronic component and a strip-shaped hole for connecting the micro-special motor are formed in the bracket. The encoder with the novel structure is different from the existing encoder in structure, so that the variety of the encoder is enriched, the encoder can be adapted to a novel micro-special motor, the use requirement of more diversification of the micro-special motor is met, and the application range of the encoder is expanded.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is an exploded view of an encoder and a micro-motor according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an electronic assembly;
fig. 3 is a schematic structural view of the bracket.
In fig. 1-3:
the device comprises a 1-multipole magnetic ring, a 2-electronic component, a 3-bracket, a 4-mounting hole, a 5-bar hole, a 6-convex plate, a 7-adjusting hole and an 8-micro-special motor;
21-ring circuit board, 22-hall element.
Detailed Description
The invention provides a novel encoder, which not only ensures that the variety of the encoder is more abundant, but also meets the use requirement of more diversification of a micro-special motor.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 3, an encoder of a novel structure provided in an embodiment of the present invention is configured to be disposed on a motor, more preferably, on a novel micro-motor 8 having an outer rotor multipole structure, and includes: a multipolar magnetic ring 1 which can be sleeved on the power output shaft of the micro-special motor 8; the annular electronic component 2 is sleeved outside the multipolar magnetic ring 1; the annular bracket 3, the bracket 3 is provided with a mounting hole 4 for connecting and fixing the electronic component 2 and a strip-shaped hole 5 for connecting the micro-special motor 8.
Through setting up the encoder to above-mentioned structure for it is all different with the structure of current known encoder, thereby has formed the encoder of a novel structure, makes it can replace current encoder and with novel little special motor 8 (for example wholly be flat motor) match installation, thereby satisfied the user demand of more diversified, enlarged the range of application of encoder.
In order to further optimize the technical solution, in the bracket 3 provided in this embodiment, the connection holes for connecting the micro-motors 8 are preferably configured as strip-shaped holes 5, and all the connection holes are also uniformly distributed around the center of the body, as shown in fig. 3. The bar-shaped hole 5 has the basic function of realizing connection with the micro-special motor 8, specifically, connecting pieces such as screws penetrate through the bar-shaped hole and fix the connecting pieces on the micro-special motor 8, and the structure of the bar-shaped hole 5 can also enable a space capable of relatively moving (namely, the inner cavity of the bar-shaped hole 5) between the connecting pieces and the bracket 3, if the position deviation exists between the bracket 3 and the micro-special motor 8 after connection, the position of the connecting pieces in the bar-shaped hole 5 can be changed by rotating the bracket 3, so that the position adjustment of the bracket 3 relative to the micro-special motor 8 is realized, and the connection effect of the bracket 3 and the micro-special motor 8 is improved. And the plurality of connecting holes 2 are preferably uniformly distributed around the center of the body 1, so that the stress balance of the bracket 3 and the micro-special motor 8 can be improved, the connection stability is improved, and the bracket and the micro-special motor are more firmly connected. In this embodiment, the number of the strip-shaped holes 5 is preferably three, because the provision of three strip-shaped holes 5 can not only ensure the stable connection between the bracket 3 and the micro-motor 8, but also reduce the processing difficulty of the bracket 3 to the greatest extent.
In this embodiment, the pole pair number of the multipole magnet ring 1 is preferably the same as the pole pair number of the micro-motor 8, or the pole pair number of the micro-motor 8 may be an integer multiple of the pole pair number of the multipole magnet ring 1. The magnetic ring in the embodiment is of a multipolar design, namely the magnetic ring is a multipolar magnetic ring 1, so that the encoder can be better matched with the novel micro-special motor 8 with an outer rotor multipolar structure, the feedback precision is improved, and the running stability of the micro-special motor 8 is further improved. If the outer rotor structure of the novel micro-motor 8 is 10 pairs of poles, the multipole magnet ring 1 can be 10 pairs of poles or 5 pairs of poles, etc. When the multipole magnetic ring 1 is 10 pairs of poles, 10 sin/cos waves can be generated per rotation of the multipole magnetic ring 1, after 12-bit analog-to-digital converter (ADC) sampling, the mechanical position theoretical precision per rotation can reach 40960 positions, and compared with the existing encoder, the resolution can be improved by 10 times. The magnetizing direction of the multipole magnet ring 1 may be a radial multipole or a planar multipole, that is, the magnetic field may be in the polar direction or in the end face at the interval between the N pole and the S pole of the multipole magnet ring 1.
As shown in fig. 2, the electronic component 2 includes a ring-shaped circuit board 21 and a plurality of hall elements 22 provided on the ring-shaped circuit board 21, the hall elements 22 are uniformly distributed in the circumferential direction of the ring-shaped circuit board 21, and the electrical angle a of any adjacent two hall elements 22 is α degrees with respect to the multi-stage magnetic ring 1, and α=90+360×n, n being an integer, for example, when n=0, the electrical angle a is 90 degrees with respect to the multi-stage magnetic ring 1 (or, in other words, for a multi-stage magnetic ring of 5 pairs of poles, the mechanical angle is 18 degrees), and when n=1, the electrical angle a is 450 degrees with respect to the multi-stage magnetic ring 1. The arrangement mode can enable the layout of the whole encoder to be more reasonable, the weight distribution to be more balanced, and the matching accuracy with the micro-special motor 8 can be improved, so that the encoder is used as a preferable scheme.
Specifically, the hall element 22 is a plug-in hall element or a patch hall element. These two types of hall elements 22 are common and inexpensive, and are advantageous for implementation of the technical solution, so they are preferable. In the present embodiment, the type or arrangement of the hall element 22 is not limited, and the hall element 22 may be of another type on the premise of meeting the operation requirement.
More preferably, the bar-shaped hole 5 is an arc-shaped bar-shaped hole extending along an arc in the circumferential direction of the bracket 3, and the center of the arc is the center of the bracket 3, as shown in fig. 3. In this embodiment, since the support 3 is in a circular shape, when the relative positions of the support 3 and the micro-motor 8 are adjusted, in order to improve the adjustment degree to the greatest extent and ensure the adjustment accuracy, the strip-shaped hole 5 is preferably an arc-shaped hole, and the circle where the arc-shaped hole extends in the circumferential direction of the support 3 is concentric with the support 3.
In this embodiment, the mounting hole 4 is preferably a threaded hole capable of being engaged with a screw. The mounting holes 4 are used for connecting the electronic component 2, in particular connecting members passing through the electronic component 2 and the mounting holes 4 to connect the two. Here, the mounting hole 4 may be a common through hole, and the connection member may be a bolt, and the connection between the electronic component 2 and the bracket 3 may be achieved by locking the bolt and the nut passing through the electronic component 2 and the mounting hole 4. In this embodiment, the mounting hole 4 is preferably set to be a threaded hole, so that a screw can be selected as a connecting piece, and the connection between the electronic component 2 and the bracket 3 can be realized through the threaded fit between the screw and the threaded hole, so that the use of nuts is avoided, the number of connecting pieces is reduced, and the mounting difficulty of the bracket 3 is reduced. In this embodiment, the number of the mounting holes 4 is also preferably three, and the mounting holes 4 are aligned with the bar-shaped holes 5 one by one, so as to further improve the stress balance of the bracket 3.
In particular, the present embodiment is preferable in that a plurality of convex plates 6 protruding toward the center of the bracket 3 are provided on the inner side edge of the bracket 3, and a plurality of mounting holes 4 are preferably provided on the convex plates 6 one to one as shown in fig. 3. The arrangement mode ensures that the number and the arrangement positions of the convex plates 6, the mounting holes 4 and the strip-shaped holes 5 are in one-to-one correspondence, so that the whole bracket 3 is of a central symmetrical structure, and the overall stress balance of the bracket 3 is improved to the greatest extent.
As shown in fig. 3, the boss 6 is preferably a semicircular boss 6, and the mounting hole 4 is opened at a central portion of the boss 6. The shape of the protruding plate 6 and the arrangement position of the mounting holes 4 on the protruding plate 6 may be selected in various ways, and the above-mentioned manner is preferred in this embodiment because it enables more accurate symmetrical arrangement of the plurality of mounting holes 4 with respect to the center of the bracket 3, thereby improving the connection effect.
Further, it is also preferable that the boss 6 is integrally formed with the bracket 3. In this embodiment, the convex plate 6 and the bracket 3 are preferably integrally formed, that is, the whole bracket 3 is integrally formed, so that the strength of the bracket 3 itself can be improved, the connection effect of the encoder and the micro-motor 8 can be enhanced, the processing difficulty can be reduced, and the bracket 3 can be conveniently obtained by directly cutting on a plate-shaped member according to the shape.
The support 3 provided in this embodiment further includes a plurality of adjustment holes 7 formed therein, the number of the adjustment holes 7 may be the same as the number of the bar holes 5, and the adjustment holes 7 and the bar holes 5 are alternately arranged in the circumferential direction of the support 3, as shown in fig. 3. The adjusting hole 7 is used for connecting an adjusting piece with the bracket 3, when the bracket 3 needs to be rotated to adjust the installation position of the encoder on the micro-special motor 8, the adjusting piece can be inserted into the adjusting hole 7, and the bracket 3 is rotated by operating the adjusting piece, so that position adjustment is realized. In this embodiment, the adjustment holes 7 are preferably also provided in three, because the adjustment member has three insertion ends, which can be inserted into the three adjustment holes 7 one by one, thereby achieving sufficient connection of the adjustment member and the bracket 3 to facilitate the adjustment operation. The adjusting holes 7 and the strip-shaped holes 5 are alternately arranged in the circumferential direction of the bracket 3, namely, are alternately arranged in the circumferential direction of the bracket 3, as shown in fig. 3, so that the bracket 3 can be stressed relatively uniformly during rotation. Of course, the position adjustment may be achieved by clamping the outer edge of the bracket 3 by another tool and applying a force to rotate the bracket 3 instead of providing the adjustment hole 7.
In the present description, the structures of the parts are described in a progressive manner, and the structure of each part is mainly described as a difference from the existing structure, and the whole and part of the structure of the encoder can be obtained by combining the structures of the parts.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. An encoder for placement on a micro-machine, comprising:
a multipolar magnetic ring which can be sleeved on the power output shaft of the micro-special motor;
the annular electronic component is sleeved outside the multi-pole magnetic ring;
the electronic component comprises an annular circuit board and a plurality of Hall elements arranged on the annular circuit board, wherein the Hall elements are uniformly distributed in the circumferential direction of the annular circuit board, the electrical angle between any two adjacent Hall elements is alpha degrees relative to the multipole magnetic ring, and alpha = 90+360 x n, n is an integer;
the annular bracket is provided with a mounting hole connected with the electronic component and a strip-shaped hole connected with the micro-special motor;
the strip-shaped hole is an arc-shaped strip hole extending along an arc line in the circumferential direction of the bracket, and the circle center of the arc line is the center of the bracket;
the adjusting holes and the strip-shaped holes are arranged at intervals in the circumferential direction of the bracket;
a plurality of convex plates protruding towards the circle center of the bracket are arranged on the inner side edge of the bracket, and a plurality of mounting holes are arranged on the convex plates one by one;
the convex plate is a semicircular convex plate, the mounting hole is formed in the center of the convex plate, and the convex plate and the bracket are of an integrated structure;
the convex plates are in one-to-one correspondence with the mounting holes and the strip-shaped holes in number and arrangement positions.
2. The encoder of claim 1, wherein the pole pair number of the multipole magnet ring is the same as the pole pair number of the micro-machine or the pole pair number of the micro-machine is an integer multiple of the pole pair number of the multipole magnet ring.
3. The encoder of claim 1, wherein the magnetization direction of the multipole magnet ring is radial multipole or planar multipole.
4. The encoder of claim 1, wherein the hall element is a plug-in hall element or a patch hall element.
5. The encoder of claim 1, wherein the mounting hole is a threaded hole capable of mating with a screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710262054.9A CN106931996B (en) | 2017-04-20 | 2017-04-20 | Encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710262054.9A CN106931996B (en) | 2017-04-20 | 2017-04-20 | Encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106931996A CN106931996A (en) | 2017-07-07 |
| CN106931996B true CN106931996B (en) | 2023-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710262054.9A Active CN106931996B (en) | 2017-04-20 | 2017-04-20 | Encoder |
Country Status (1)
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| CN (1) | CN106931996B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018120370A1 (en) * | 2018-08-21 | 2020-02-27 | Valeo Siemens Eautomotive Germany Gmbh | Holding device for a resolver on a bearing plate of an electric motor |
| CN109149869A (en) * | 2018-11-13 | 2019-01-04 | 广东金力变速科技股份有限公司 | Magnetic coding disk and magnetic coder |
| JP7166180B2 (en) * | 2019-01-25 | 2022-11-07 | 日本電産サンキョー株式会社 | Encoders and motors with encoders |
| CN110243389A (en) * | 2019-06-18 | 2019-09-17 | 邢台市超声检测设备有限公司 | A kind of rail flaw detector magnetic encoder and its measurement method |
| CN112050834A (en) * | 2020-08-18 | 2020-12-08 | 深圳市零差云控科技有限公司 | Code disc |
| CN113922593A (en) * | 2021-07-30 | 2022-01-11 | 上海鸣志电器股份有限公司 | Electric machine |
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| Publication number | Publication date |
|---|---|
| CN106931996A (en) | 2017-07-07 |
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| TG01 | Patent term adjustment |