CN222234529U - Vibrating mirror motor - Google Patents
Vibrating mirror motor Download PDFInfo
- Publication number
- CN222234529U CN222234529U CN202420878729.8U CN202420878729U CN222234529U CN 222234529 U CN222234529 U CN 222234529U CN 202420878729 U CN202420878729 U CN 202420878729U CN 222234529 U CN222234529 U CN 222234529U
- Authority
- CN
- China
- Prior art keywords
- rotor assembly
- encoder
- galvanometer
- circuit board
- housing
- 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.)
- Active
Links
Landscapes
- Mechanical Optical Scanning Systems (AREA)
Abstract
本申请属于电机技术领域，涉及一种振镜电机。所述振镜电机包括：定子组件，包括外壳、设于所述外壳内的磁轭、以及设于所述磁轭上的多个线圈绕组，相邻设置的两个所述线圈绕组的极性相反；所述外壳的一侧设有安装部，且所述安装部位于相邻设置的两个所述线圈绕组的中部；转子组件，贯穿所述外壳，其中一端用于与振镜连接，并相对所述定子组件转动；位置反馈装置，与所述转子组件远离所述振镜的一端连接，用于反馈所述转子组件的转动信息。本申请在装配振镜电机时，无需对转子组件进行复杂的调试或校准，使得振镜电机的装配更为便捷，且便于光学角度校正，另外采用安装部即可实现振镜电机的安装，提高了安装精度、避免安装工艺繁琐。
The present application belongs to the field of motor technology, and relates to a galvanometer motor. The galvanometer motor includes: a stator assembly, including a housing, a yoke arranged in the housing, and a plurality of coil windings arranged on the yoke, wherein the polarities of two adjacent coil windings are opposite; a mounting portion is provided on one side of the housing, and the mounting portion is located in the middle of the two adjacent coil windings; a rotor assembly, which passes through the housing, one end of which is used to connect to the galvanometer and rotate relative to the stator assembly; a position feedback device, which is connected to the end of the rotor assembly away from the galvanometer, and is used to feedback the rotation information of the rotor assembly. When assembling the galvanometer motor, the present application does not require complicated debugging or calibration of the rotor assembly, which makes the assembly of the galvanometer motor more convenient and facilitates optical angle correction. In addition, the installation of the galvanometer motor can be achieved by using the mounting portion, which improves the installation accuracy and avoids cumbersome installation process.
Description
Technical Field
The application relates to the technical field of motors, in particular to a vibrating mirror motor.
Background
In recent years, a laser radar Li DAR (L I GHT DETECT I on AND RANG I NG) gradually enters the field of view of the masses, the laser radar helps automobiles to autonomously sense road environments, automatically plan driving routes and control the vehicles to reach preset targets, and meanwhile, the laser radar is widely applied to the fields of intelligent high speed, rail transit, unmanned aerial vehicles, robots and the like, wherein a core component adopted by the semi-solid laser radar is a micro-vibration mirror motor, and a micro electric control signal is adopted to control real vibration so as to realize precise control of light, but when the vibration mirror motor is installed in the laser radar, additional components such as a bracket are required to be installed, so that the installation precision is poor, and the installation process is complicated.
Disclosure of utility model
The embodiment of the application provides a vibrating mirror motor, which is used for solving the problems of poor mounting precision and complicated mounting process of the vibrating mirror motor in the prior art.
In order to solve the technical problems, the embodiment of the application provides a vibrating mirror motor, which adopts the following technical scheme:
a galvanometer motor, comprising:
The stator assembly comprises a shell, a magnetic yoke arranged in the shell, and a plurality of coil windings arranged on the magnetic yoke, wherein the polarities of two adjacent coil windings are opposite;
The rotor assembly penetrates through the shell, one end of the rotor assembly is used for being connected with the vibrating mirror and rotating relative to the stator assembly;
and the position feedback device is connected with one end, far away from the vibrating mirror, of the rotor assembly and is used for feeding back rotation information of the rotor assembly.
Further, the position feedback device comprises an encoder and a soft and hard combination board, the soft and hard combination board comprises a rigid circuit board and a flexible circuit board electrically connected with the rigid circuit board, the coil winding is electrically connected with the rigid circuit board, the rigid circuit board is arranged on the shell, one end, far away from the vibrating mirror, of the rotor assembly penetrates through the rigid circuit board and is connected with the encoder, and the encoder is electrically connected with the rigid circuit board.
Further, the galvanometer motor further comprises an end cover, the end cover is connected with one side, far away from the shell, of the rigid circuit board, and the encoder is arranged in the end cover.
Further, the encoder is one of an optoelectronic encoder, a grating encoder, a magnetic encoder and an inductive encoder.
Further, the rotor assembly comprises a front bearing, a rear bearing and a magnetic rod, wherein the front bearing is arranged on the inner wall of one end of the outer shell away from the position feedback device, the rear bearing is arranged on the inner wall of one end of the outer shell close to the position feedback device, and the magnetic rod penetrates through the outer shell and is connected with the front bearing and the rear bearing.
Further, the vibrating mirror electrode further comprises a limiting ring and an elastic piece, the limiting ring is arranged at the end part, away from the position feedback device, of the outer shell, two ends of the elastic piece are respectively abutted to the limiting ring and the front bearing, and one end, away from the position feedback device, of the magnetic rod penetrates out of the limiting ring.
Further, the inner wall of the limiting ring is provided with a limiting groove, one end of the magnetic rod, which is far away from the position feedback device, is provided with a stop pin, and the stop pin is positioned in the limiting groove.
Further, a gasket is arranged between the limiting ring and the shell.
Further, the elastic piece is a wave spring.
Further, a clamping piece is arranged at one end, far away from the position feedback device, of the rotor assembly, and the clamping piece is used for clamping the vibrating mirror.
Compared with the prior art, the embodiment of the application has the advantages that as the polarities of the two adjacent coil windings in the stator assembly are opposite, the mounting part is positioned in the middle of the two adjacent coil windings, which is equivalent to the calibration of the initial position of the rotor assembly, namely, the function of calibrating the zero position of the motor of the vibrating mirror motor is achieved, on one hand, the rotor assembly is easier to be placed at the correct position when the vibrating mirror motor is assembled, complicated debugging or calibration is not needed, the assembly of the vibrating mirror motor is more convenient, the optical angle correction is also convenient, and on the other hand, the mounting part is adopted to realize the mounting of the vibrating mirror motor, no additional component is needed, the mounting precision is improved, and the complicated mounting process is avoided.
Drawings
In order to more clearly illustrate the solution of the present application, a brief description will be given below of the drawings required for the description of the embodiments, it being apparent that the drawings in the following description are some embodiments of the present application and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a vibrating mirror motor according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of a galvanometer motor according to an embodiment of the application;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is an exploded view of fig. 1.
The motor comprises the following components of 1, a stator assembly, 2, a mounting part, 3, a rotor assembly, 31, a front bearing, 32, a rear bearing, 33, a magnetic rod, 34, a stop pin, 4, a position feedback device, 41, a soft and hard combination plate, 42, a rigid circuit board, 43, a flexible circuit board, 5, an end cover, 6, a limiting ring, 61, a limiting groove, 7, an elastic piece, 8, a gasket, 9 and a clamping piece.
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs, the terms used in the description of this application are for the purpose of describing particular embodiments only and are not intended to be limiting of the application, and the terms "comprising" and "having" and any variations thereof in the description of this application and the claims and the above description of the drawings are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
In order to make the person skilled in the art better understand the solution of the present application, the technical solution of the embodiment of the present application will be clearly and completely described below with reference to the accompanying drawings.
The embodiment of the application provides a galvanometer motor, which is shown in fig. 1 to 4, and comprises a stator assembly 1, a rotor assembly 3 and a position feedback device 4, wherein the stator assembly 1 comprises a stator assembly 1, a stator assembly 3 and a position feedback device, the stator assembly 1 comprises a shell (not shown), a magnet yoke (not shown) arranged in the shell, a plurality of coil windings (not shown) arranged on the magnet yoke, two adjacent coil windings are opposite in polarity, one side of the shell is provided with a mounting part 2, the mounting part 2 is positioned in the middle of the two adjacent coil windings, the rotor assembly 3 penetrates through the shell, one end of the rotor assembly 3 is used for being connected with a galvanometer (not shown) and rotating relative to the stator assembly 1, and the position feedback device 4 is connected with one end of the rotor assembly 3, which is far away from the galvanometer, and is used for feeding back rotation information of the rotor assembly 3.
The working principle of the galvanometer motor provided by the embodiment of the application is that the galvanometer motor is installed in a laser radar through the installation part 2, when the stator assembly 1 is electrified, the magnetic field of the stator assembly 1 and the magnetic field of the rotor assembly 3 interact, so that the rotor assembly 3 drives the galvanometer to rotate in the shell of the stator assembly 1, and meanwhile, the position feedback device 4 acquires rotation information such as the rotation position or the rotation speed of the rotor assembly 3, so that the rotation control of the galvanometer motor is realized.
The vibrating mirror motor has the beneficial effects that as the polarities of the two adjacent coil windings in the stator assembly 1 are opposite, the mounting part 2 is positioned in the middle of the two adjacent coil windings, which is equivalent to the calibration of the initial position of the rotor assembly 3, namely, the function of calibrating the zero position of the motor of the vibrating mirror motor is achieved, on one hand, the rotor assembly 3 is easier to be placed at the correct position when the vibrating mirror motor is assembled, complicated debugging or calibration is not needed, the assembly of the vibrating mirror motor is more convenient, the optical angle correction is also convenient, on the other hand, the mounting part 2 is adopted to realize the mounting of the vibrating mirror motor, no additional parts are needed, the mounting precision is improved, and the complicated mounting process is avoided.
Optionally, the mounting portion 2 is a plate material disposed along a length direction of the housing and provided with a mounting hole.
In the embodiment, the magnet yoke and the coil are fixedly sealed in the shell by adopting a glue filling and packaging process, so that the magnet yoke and the coil can resist the temperature of more than 140 degrees and are not deformed, and the stability and the consistency of the stator assembly 1 are improved.
In this embodiment, the rotor assembly 3 is disposed in the housing, so that the coaxiality of the rotor assembly 3 and the stator assembly 1 is ensured.
Further, the position feedback device 4 includes an encoder (not shown) and a rigid-flex board 41, the rigid-flex board 41 includes a rigid circuit board 42 and a flexible circuit board 43 electrically connected to the rigid circuit board 42, the coil winding is electrically connected to the rigid circuit board 42, the rigid circuit board 42 is disposed on the housing, and an end of the rotor assembly 3, which is far away from the vibrating mirror, penetrates through the rigid circuit board 42 and is connected to the encoder, and the encoder is electrically connected to the rigid circuit board 42.
In the embodiment, the soft and hard combined board 41 comprising the rigid circuit board 42 and the flexible circuit board 43 is adopted to realize power driving of the stator assembly 1 and rotation information output and input of the encoder, wherein the flexible circuit board 43 is adopted to carry out wire outgoing, so that space is saved for installing the galvanometer motor, adaptability is higher, and further the integration of the laser radar is improved.
Further, the galvanometer motor further comprises an end cover 5, the end cover 5 is connected with one side, far away from the shell, of the rigid circuit board 42, and the encoder is arranged in the end cover 5.
In this embodiment, the end cover 5 is used to realize the encapsulation of the encoder, so as to reduce the interference of external factors to the encoder and improve the system stability of the galvanometer motor.
Optionally, the encoder is a photoelectric encoder, the photoelectric encoder converts the mechanical geometric displacement of the rotor assembly 3 into the change of an electric signal through photoelectric conversion, the photoelectric encoder comprises photodiodes, LED light sources and components on the rotor assembly 3, the photodiodes are generally distributed on a rigid circuit board 42, the LED light sources are loaded on an end cover 5 and drive the components to move when the rotor assembly 3 rotates, and the LED light sources irradiate the electric signal generated by the change of the position offset of the photodiodes and then are converted into controllable voltage signals through an amplifying circuit of the rigid circuit board 42, so that the position feedback of the rotor assembly 3 is read, and the rotation control of the vibrating mirror motor is realized.
Optionally, the encoder is a grating encoder, the grating encoder comprises a grating code disc driven by the rotor assembly 3 and a grating reading head matched with the grating code disc, the grating reading head is arranged on the end cover 5, the grating reading head comprises a light emitter and a light receiver, the grating code disc is driven by the rotation of the rotor assembly 3, the grating reading head continuously receives signals, and further the position of the rotor assembly 3 is fed back, so that the rotation control of the galvanometer motor is realized.
Optionally, the encoder is a magnetic encoder, the magnetic encoder includes a magnetic scale provided on the rotor assembly 3 and a sensor provided on the end cover 5, a series of magnetic poles are provided on the magnetic scale, when the rotor assembly 3 rotates, the magnetic poles change the relative position, the reading of the sensor is changed, the sensor outputs a pulse signal, and an optical grid and a notch on the encoding disc are responsible for converting the rotation position into a digital signal, thereby realizing the rotation control of the galvanometer motor.
Optionally, the encoder is an induction encoder, the induction encoder is mainly assembled by a magnetic induction coil and a code disc, the magnetic induction coil is usually installed on the end cover 5, the code disc is connected to the rotor assembly 3, a plurality of magnetic marks are arranged on the code disc, when the rotor assembly 3 rotates, the magnetic marks on the code disc generate magnetic induction intensity change through the magnetic induction coil, and then inductance values in the coil change, and the position or speed of the rotor assembly 3 can be determined by measuring inductance change in the coil, so that rotation control of the galvanometer motor is realized.
In this embodiment, the encoder may be selected according to actual requirements, which is not limited in this disclosure.
Further, the rotor assembly 3 includes a front bearing 31, a rear bearing 32, and a magnetic rod 33, the front bearing 31 is disposed on an inner wall of the end of the housing away from the position feedback device 4, the rear bearing 32 is disposed on an inner wall of the end of the housing adjacent to the position feedback device 4, and the magnetic rod 33 penetrates the housing and is connected to the front bearing 31 and the rear bearing 32.
In this embodiment, the two ends of the magnetic rod 33 are connected with the front bearing 31 and the rear bearing 32, so that the magnetic rod 33 is accurately installed in the stator assembly 1 on one hand, and friction between the magnetic rod 33 and the housing during rotation is reduced on the other hand, so as to maintain the performance of the galvanometer motor during operation.
In this embodiment, after the front bearing 31 and the rear bearing 32 are bonded to both ends of the magnetic rod 33, the rotor assembly 3 is assembled or reworked to ensure concentricity of the front bearing 31 and the rear bearing 32 and concentricity of the galvanometer motor.
In this embodiment, the magnetic rod 33 has the characteristics of high temperature resistance and high magnetic performance, and the performance is not significantly attenuated at-40 ℃ to 125 ℃.
In this embodiment, the magnetic rod 33 includes a rotating shaft (not shown) and a plurality of magnets (not shown) disposed along a length direction of the rotating shaft, and the front bearing 31 and the rear bearing 32 are disposed at both ends of the rotating shaft.
In this embodiment, the magnet and the rotating shaft use an adhesion process.
In this embodiment, after the magnet is bonded to the rotating shaft, the front bearing 31 and the rear bearing 32 are mounted to ensure the mounting accuracy of the front bearing 31 and the rear bearing 32, so as to reduce the radial runout of the magnetic rod 33 when the vibrating mirror motor operates.
Further, the galvanometer electrode further comprises a limiting ring 6 and an elastic piece 7, the limiting ring 6 is arranged at the end part of the outer shell away from the position feedback device 4, two ends of the elastic piece 7 are respectively abutted to the limiting ring 6 and the front bearing 31, and one end of the magnetic rod 33, which is away from the position feedback device 4, penetrates out of the limiting ring 6.
In this embodiment, the elastic member 7 applies an acting force to the magnetic rod 33, so as to reduce the axial movement of the magnetic rod 33 when the galvanometer motor operates, and improve the stability and high repeatability of the galvanometer motor.
Further, a limit groove 61 is formed in the inner wall of the limit ring 6, a stop pin 34 is arranged at one end of the magnetic rod 33 away from the position feedback device 4, and the stop pin 34 is located in the limit groove 61.
In this embodiment, the rotation angle of the magnetic rod 33 in the rotor assembly 3 is limited by the stop pin 34 and the stop ring 6, so that the breakage caused by collision of the vibrating mirror due to the overlarge rotation angle of the magnetic rod 33 is avoided.
In this embodiment, the notch of the limiting groove 61 may be adjusted according to the actual requirement, which is not limited in the present application.
Further, a gasket 8 is arranged between the limiting ring 6 and the shell.
In this embodiment, the spacer 8 can avoid collision between the stop collar 61 and the housing.
Further, the elastic member 7 is a wave spring.
In this embodiment, the contact area between the wave spring and the stop collar 6 and the front bearing 31 is large, so as to facilitate reducing the axial movement of the magnetic rod 33 when the galvanometer motor operates.
Further, a clamping piece 9 is arranged at one end of the rotor assembly 3 away from the position feedback device 4, and the clamping piece 9 is used for clamping the vibrating mirror.
In this embodiment, the magnetic rod 33 of the rotor assembly 3 realizes the clamping of the galvanometer through the clamping piece 9, so as to avoid the galvanometer from falling off when the rotor assembly 3 rotates.
In this embodiment, the clamping member 9 is connected to the magnetic rod 33 of the rotor assembly 3 by means of screw locking or bonding.
It is apparent that the above-described embodiments are only some embodiments of the present application, but not all embodiments, and the preferred embodiments of the present application are shown in the drawings, which do not limit the scope of the patent claims. This application may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the application are directly or indirectly applied to other related technical fields, and are also within the scope of the application.
Claims (10)
1. A galvanometer motor, comprising:
The stator assembly comprises a shell, a magnetic yoke arranged in the shell, and a plurality of coil windings arranged on the magnetic yoke, wherein the polarities of two adjacent coil windings are opposite;
The rotor assembly penetrates through the shell, one end of the rotor assembly is used for being connected with the vibrating mirror and rotating relative to the stator assembly;
and the position feedback device is connected with one end, far away from the vibrating mirror, of the rotor assembly and is used for feeding back rotation information of the rotor assembly.
2. The galvanometer motor according to claim 1, wherein the position feedback device includes an encoder and a rigid-flex circuit, the rigid-flex circuit includes a rigid circuit board and a flexible circuit board electrically connected to the rigid circuit board, the coil winding is electrically connected to the rigid circuit board, the rigid circuit board is disposed on the housing, an end of the rotor assembly remote from the galvanometer extends through the rigid circuit board and is connected to the encoder, and the encoder is electrically connected to the rigid circuit board.
3. The galvanometer motor according to claim 2, further comprising an end cap coupled to a side of said rigid circuit board remote from said housing, said encoder being disposed within said end cap.
4. The galvanometer motor according to claim 2, wherein said encoder is one of a photoelectric encoder, a grating encoder, a magnetic encoder, and an inductive encoder.
5. The galvanometer motor according to any one of claims 1-4, wherein said rotor assembly includes a front bearing provided on an inner wall of said housing at an end remote from said position feedback device, a rear bearing provided on an inner wall of said housing at an end adjacent to said position feedback device, and a magnetic rod extending through said housing and connected to said front and rear bearings.
6. The galvanometer motor according to claim 5, further comprising a stop collar and an elastic member, wherein the stop collar is disposed at an end of the housing away from the position feedback device, two ends of the elastic member are respectively abutted against the stop collar and the front bearing, and one end of the magnetic rod away from the position feedback device penetrates out of the stop collar.
7. The galvanometer motor according to claim 6, wherein an inner wall of the limit ring is provided with a limit groove, one end of the magnetic rod away from the position feedback device is provided with a stop pin, and the stop pin is positioned in the limit groove.
8. The galvanometer motor according to claim 6, wherein a spacer is provided between the stop collar and the housing.
9. The galvanometer motor of claim 6, wherein the elastic member is a wave spring.
10. A galvanometer motor according to any one of claims 1-4, wherein an end of said rotor assembly remote from said position feedback device is provided with a clamp for clamping said galvanometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420878729.8U CN222234529U (en) | 2024-04-24 | 2024-04-24 | Vibrating mirror motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420878729.8U CN222234529U (en) | 2024-04-24 | 2024-04-24 | Vibrating mirror motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222234529U true CN222234529U (en) | 2024-12-24 |
Family
ID=93916282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420878729.8U Active CN222234529U (en) | 2024-04-24 | 2024-04-24 | Vibrating mirror motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222234529U (en) |
-
2024
- 2024-04-24 CN CN202420878729.8U patent/CN222234529U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7141904B2 (en) | Gear reduction unit and geared motor connector | |
| US6424061B1 (en) | Stepping motor with magnetic sensor | |
| EP0863383B1 (en) | Resolver with leakage flux absorber | |
| CN103616040A (en) | Combined type optical-electricity encoder with copper code disc | |
| US4237394A (en) | Frequency generator and miniature motor provided with the same | |
| CN218497138U (en) | Laser radar and robot | |
| CN222234529U (en) | Vibrating mirror motor | |
| CN110323919B (en) | Micro-positioning device based on normal stress electromagnetic drive | |
| JPWO2012063361A1 (en) | Electric power steering motor | |
| CN108768122B (en) | Direct drive module for OCT | |
| CN112865436A (en) | Special motor and control method and control device thereof | |
| CN214101160U (en) | Closed-loop stepping motor | |
| CN101892996B (en) | DC motor with cup-shaped stator and DC fan formed by same | |
| CN108649724B (en) | Voice coil motor module and swing control device | |
| US3641583A (en) | Electrodynamic transducer | |
| CN211668524U (en) | Encoder composite structure and compact encoder comprising same | |
| CN208316522U (en) | A kind of reflection type photoelectricity closed loop controllor for step-by-step motor | |
| CN217824633U (en) | Motor and machining equipment | |
| CN221900633U (en) | A linear motor driver with convenient installation of reading head | |
| US20250070631A1 (en) | Galvanometer motor and lidar | |
| CN222706382U (en) | Servo motor of compound motion | |
| CN222028419U (en) | Laser radar and robot | |
| CN218449672U (en) | Prism motor, laser scanning device and laser equipment | |
| CN217545841U (en) | Reciprocating swing motor | |
| US20240241226A1 (en) | Galvanometer motor and lidar |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |