CN219760783U - Unmanned automobile laser radar low-rotation-speed photoinduction motor - Google Patents
Unmanned automobile laser radar low-rotation-speed photoinduction motor Download PDFInfo
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- CN219760783U CN219760783U CN202320549004.XU CN202320549004U CN219760783U CN 219760783 U CN219760783 U CN 219760783U CN 202320549004 U CN202320549004 U CN 202320549004U CN 219760783 U CN219760783 U CN 219760783U
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- 230000006698 induction Effects 0.000 claims abstract description 37
- 230000001788 irregular Effects 0.000 claims abstract description 6
- 230000003287 optical effect Effects 0.000 claims description 25
- 230000004308 accommodation Effects 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a low-rotation-speed light induction motor for an unmanned automobile laser radar, which comprises a base and a rotating mirror rotatably accommodated in the base, wherein the rotating mirror is an irregular quadrangular frustum with a hollow inner cavity, a stator seat is arranged in the hollow inner cavity, a shaft core assembly is arranged in the stator seat, a magnetic induction assembly is arranged outside the stator seat, the stator seat is fixed on the base, a shaft core in the shaft core assembly is fixed with the rotating mirror through a transfer flange, the rotating mirror, the transfer flange and the shaft core rotate relative to the stator seat, screw holes and accommodating holes are formed in the upper surface of the rotating mirror, the number and the positions of the screw holes are correspondingly matched with those of the transfer flange, and the flatness error between the upper surface of the rotating mirror and the base is less than 5 mu m. The unmanned automobile laser radar low-rotation-speed light induction motor provided by the utility model effectively ensures smooth and non-swaying operation of the motor by controlling the flatness errors of the rotating mirror, the base and the adapter flange; meanwhile, the hollowing process of the rotating mirror reduces the overall weight of the motor, and effectively prevents the unbalanced operation of the motor.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a low-rotation-speed light induction motor of an unmanned automobile laser radar.
Background
The laser radar is the essential configuration of intelligent driving of the vehicle, the laser radar can be regarded as eyes of the vehicle, the laser radar can more accurately sense road conditions, and the computer system can send relevant instructions to the vehicle according to information detected by the radar, so that the vehicle can realize more excellent automatic auxiliary driving functions.
The light induction motor is a key component of the laser radar, and the current light induction motor has the following problems: shaking occurs when the photoinduction motor operates; the motor has large overall weight and unstable connection between the rotating mirror and the shaft core.
Disclosure of Invention
Aiming at the technical problems in the prior art, the utility model provides a low-rotation-speed light induction motor for an unmanned automobile laser radar, which can solve the problem of unstable connection between a rotating mirror and a shaft core.
The utility model provides a low-rotation-speed light induction motor for an unmanned automobile laser radar, which comprises a base and a rotating mirror rotatably accommodated in the base, wherein the rotating mirror is an irregular prismatic table with a hollow inner cavity, a stator seat is arranged in the hollow inner cavity, a shaft core assembly is arranged in the stator seat, a magnetic induction assembly is arranged outside the stator seat, the stator seat is fixed on the base, the rotating mirror is fixedly connected with a transfer flange, a shaft core in the shaft core assembly is fixedly connected with the rotating mirror through the transfer flange, the rotating mirror, the transfer flange and the shaft core rotate relative to the stator seat, an accommodating hole is formed in the upper surface of the rotating mirror, and the flatness error between the upper surface of the rotating mirror and the inner bottom surface of the base is less than 5 mu m.
Optionally, the adapter flange includes the cylinder chassis and with the column that the cylinder chassis set up perpendicularly, the column runs through the central point on cylinder chassis puts, the column is embedded in the accommodation hole of turning mirror.
Optionally, the flatness error between the upper surface of the cylindrical chassis and the upper surface of the rotating mirror is less than 5 μm.
Optionally, a cavity is arranged in the convex column, and the shaft core is arranged in the cavity.
Optionally, the rotating mirror is fixed with the adapting flange in a screwed manner, a first screw hole is formed in the upper surface of the rotating mirror, and the number and the positions of the first screw holes are correspondingly matched with the adapting flange.
Optionally, the number of the first screw holes is 3, and 3 first screw holes are arranged around the circumferential direction of the accommodating hole at equal angle intervals.
Optionally, the cylindrical chassis is provided with a second screw hole, and the second screw hole is adapted to the setting positions and the number of the first screw holes on the upper surface of the rotating mirror.
Optionally, the number of the second screw holes is 3, and the second screw holes are arranged around the circumference direction of the convex column at equal angle intervals.
Optionally, the turning mirror is an irregular quadrangular frustum.
Optionally, the magnetic induction component comprises a magnetic ring, the magnetic ring is in small clearance fit with the cavity wall of the hollow inner cavity of the rotating mirror, and the range of the outer diameter of the magnetic ring is as follows: 19.75 mm-19.8 mm, wherein the diameter of the inner cavity of the rotating mirror is in the range of: 19.8 mm-19.81 mm.
Optionally, the magnetic induction assembly further comprises an optical code disc and an encoder, a containing cavity for containing the optical code disc is further formed in the bottom surface of the rotating mirror, and a glue dropping layer is arranged between the optical code disc and the cavity wall of the containing cavity.
The low-rotation-speed light induction motor for the unmanned automobile laser radar provided by the utility model is used for fixing the rotating mirror and the shaft core through the adapter flange, controlling the flatness error of the rotating mirror, the base and the adapter flange, effectively solving the problem of unstable connection of the rotating mirror and the shaft core, and preventing looseness caused by unfixed connection of the rotating mirror and the shaft core from influencing the operation accuracy of the motor. The low-rotation-speed light induction motor for the unmanned automobile laser radar reduces the overall weight of the motor by hollowing out the rotating mirror, effectively prevents the unbalanced running of the motor and effectively prevents the unbalanced running of the motor.
Drawings
Preferred embodiments of the present utility model will be described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a cross-sectional view of an unmanned automotive lidar low-speed light-induction motor according to an embodiment of the utility model;
FIG. 2 is a perspective view of a turning mirror according to one embodiment of the utility model; and
fig. 3 is a perspective view of an adapter flange according to one embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments of the utility model. In the drawings, like reference numerals describe substantially similar components throughout the different views. Various specific embodiments of the utility model are described in sufficient detail below to enable those skilled in the art to practice the teachings of the utility model. It is to be understood that other embodiments may be utilized or structural, logical, or electrical changes may be made to embodiments of the present utility model.
Fig. 1 schematically illustrates a cross-sectional view of a low-rotation-speed optical induction motor of an unmanned vehicle laser radar according to an embodiment of the present utility model, fig. 2 schematically illustrates a perspective view of a turning mirror according to an embodiment of the present utility model, and in combination with fig. 1 and 2, a turning mirror 200 rotatably accommodated in the base 100 is included in the laser radar low-rotation-speed optical induction motor for an unmanned vehicle, the turning mirror 200 has an irregular quadrangular pyramid structure having a hollow inner cavity, in the embodiments illustrated in fig. 1 and 2, the turning mirror 200 has a quadrangular pyramid structure, and in other embodiments, a polygonal pyramid structure may be employed, and the shape of the turning mirror 200 is determined by the properties of a laser emitting device and a laser receiving device of a client. The hollow inner cavity is internally provided with a stator seat 101, the inside of the stator seat 101 is provided with a shaft core assembly 102, the outside of the stator seat 101 is provided with a magnetic induction assembly, the stator seat 101 is fixed on the base 100, the rotary mirror 200 is fixedly connected with the adapter flange 300, a shaft core 104 in the shaft core assembly 102 is fixedly connected with the rotary mirror 200 through the adapter flange 300, the rotary mirror 200, the adapter flange 300 and the shaft core 104 rotate relative to the stator seat 101, the upper surface of the rotary mirror 200 is provided with a containing hole 202, and the flatness error between the upper surface of the rotary mirror 200 and the inner bottom surface of the base 100 is less than 5 mu m. The magnetic induction component comprises a magnetic ring 103, the magnetic ring 103 is in small clearance fit with the cavity wall of the hollow inner cavity of the rotary mirror 200, and the outer diameter of the magnetic ring 103 is in the range of: the diameter of the inner cavity of the rotary mirror 200 ranges from 19.75mm to 19.8 mm: 19.8 mm-19.81 mm, and can prevent the magnetic ring and the iron core from being not concentric due to overlarge gaps to cause the abnormality of the magnetic pull saw. The magnetic induction assembly further comprises an optical code disc 105 and an encoder, the bottom surface of the rotating mirror is further provided with a containing cavity for containing the optical code disc, and a glue dropping layer is arranged between the optical code disc and the cavity wall of the containing cavity. The optical code wheel 105 is in a circular ring structure and keeps concentric with the magnetic ring 103. The encoder is located right below the optical code disc 105, and light reflected by the optical code disc 105 is received by the encoder, so that the absolute precision and the repetition precision of the running angle of the optical induction motor can be accurately judged.
The low-rotation-speed light induction motor for the unmanned automobile laser radar provided by the utility model is used for hollowing out the rotating mirror, so that the overall weight of the rotating mirror can be effectively reduced, and the problem of residual unbalance of the light induction motor during operation is prevented; compared with the traditional mode that the rotating mirror and the core pulling are directly fixed, the rotating mirror and the shaft core are fixed together through the adapter flange, so that the stability is higher, and the connection is firmer; the low-rotation-speed light induction motor for the unmanned automobile laser radar provided by the utility model limits the flatness error between the upper surface of the rotating mirror and the base to be less than 5 mu m, and can ensure that the motor runs smoothly and does not shake.
In the embodiment shown in fig. 2, the turning mirror 200 is screwed and fixed with the adapting flange 300, the upper surface of the turning mirror 200 is provided with first screw holes 201, and the number and positions of the first screw holes 201 are correspondingly matched with those of the adapting flange 300.
As in the embodiment shown in fig. 2, the number of the first screw holes 201 is 3, and the 3 first screw holes 201 are arranged at equal angular intervals around the circumferential direction of the receiving hole 202. The number of the first screw holes 201 may be set according to the actual situation of the motor assembly.
Fig. 3 schematically illustrates a perspective view of an adapter flange according to an embodiment of the present utility model, and as shown in fig. 3, the adapter flange 300 includes a cylindrical chassis 301 and a boss 302 disposed perpendicular to the cylindrical chassis 301, the boss 302 penetrating through a center of the cylindrical chassis 301, and the boss 302 being embedded in the receiving hole 202 of the turning mirror 200. In this way, the flange 300 and the turning mirror 200 are connected as a whole by the boss 302 being embedded in the accommodating hole 202.
As in the embodiment shown in fig. 3, the boss 302 has a receiving cavity 303 therein, and the shaft core 104 is disposed in the receiving cavity 303. Thus, when the adapter flange 300 is fixed to the rotary mirror 200, the shaft core 104 can also be fixed to the rotary mirror 200.
As in the embodiment shown in fig. 3, the flatness error of the upper surface of the cylindrical chassis 301 and the upper surface of the turning mirror 200 is less than 5 μm. By setting the flatness error between the upper surface of the rotary mirror 200 and the base 100 to be less than 5 μm and the flatness error between the cylindrical chassis 301 and the upper surface of the rotary mirror 200 to be less than 5 μm, the stability of the rotary mirror and the adapter flange is high when the rotary mirror and the adapter flange rotate relative to the stator base, and the shaking generated when the motor rotates is avoided, so that the operation accuracy of the motor is influenced.
As shown in the embodiment of fig. 3, the cylindrical chassis 301 is provided with second screw holes 304, the second screw holes 304 are adapted to the upper surface of the rotary mirror 200, the number of the second screw holes 304 is 3, and the second screw holes 304 are adapted to the arrangement positions and the number of the first screw holes 201 on the upper surface of the rotary mirror 200. In this way, when the rotary mirror 200 is matched and locked with the screw hole on the rotary mirror 200, the connection between the rotary mirror 200 and the adapter flange 300 is more stable.
In the embodiment shown in fig. 3, the number of the second screw holes 304 is 3, and the second screw holes 304 are arranged at equal angular intervals around the circumferential direction of the boss.
When the light induction motor works, the shaft core drives the rotary mirror to rotate, and the Hall sensor senses first rotation information of the rotary mirror through magnetic induction with the magnetic ring; the encoder detects second rotation information of the rotary mirror by receiving light reflected by the optical code disc, and determines the rotation angle of the rotary mirror by using the first rotation information and the second rotation information.
In summary, the low-rotation-speed light induction motor for the unmanned automobile laser radar provided by the utility model has the following advantages:
the rotary mirror is hollowed, so that the overall weight of the rotary mirror can be effectively reduced, and the problem of residual unbalance of the photoinduction motor during operation is prevented;
the rotary mirror and the shaft core are fixed through the adapter flange, so that the problem that the connection between the rotary mirror and the shaft core is unstable is effectively solved, and the problem that the operation accuracy of a motor is affected due to loosening caused by the connection unfixed rotary mirror and the shaft core is prevented;
the flatness error of the upper surface of the rotating mirror and the base is limited to be smaller than 5 mu m, and the flatness error of the upper surface of the rotating mirror and the adapter flange is limited to be smaller than 5 mu m, so that smooth running of the motor is effectively ensured without shaking.
The above embodiments are provided for illustrating the present utility model and not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the scope of the present utility model, therefore, all equivalent technical solutions shall fall within the scope of the present disclosure.
Claims (11)
1. The utility model provides a be used for unmanned car laser radar low rotation speed photoinduction motor, is in including base and rotatable accommodation the turning mirror in the base, its characterized in that, the turning mirror is the irregular terrace with hollow inner chamber, be equipped with the stator seat in the hollow inner chamber, the inside of stator seat is equipped with the axle core subassembly, the outside of stator seat is equipped with magnetism and feels the subassembly, the stator seat is fixed on the base, turning mirror and adapter flange fixed connection, axle core in the axle core subassembly pass through adapter flange with turning mirror fixed connection, turning mirror, adapter flange and axle core are for the stator seat rotates, the upper surface of turning mirror is equipped with the accommodation hole, the upper surface of turning mirror with the flatness error of the inboard bottom surface of base is less than 5 mu m.
2. The low-rotation-speed optical induction motor for the laser radar of the unmanned automobile according to claim 1, wherein the adapter flange comprises a cylindrical chassis and a convex column perpendicular to the cylindrical chassis, the convex column penetrates through the center of the cylindrical chassis, and the convex column is embedded in the accommodating hole of the rotary mirror.
3. The low rotational speed optical induction motor for an unmanned vehicle lidar of claim 2, wherein the flatness error of the upper surface of the cylindrical chassis and the upper surface of the turning mirror is less than 5 μm.
4. The low rotational speed light induction motor for an unmanned vehicle lidar of claim 2, wherein the boss has a cavity therein, and the shaft core is disposed in the cavity.
5. The low-rotation-speed optical induction motor for the laser radar of the unmanned automobile according to claim 2, wherein the rotating mirror is fixedly connected with the adapter flange in a screwed mode, first screw holes are formed in the upper surface of the rotating mirror, and the number and the positions of the first screw holes are correspondingly matched with those of the adapter flange.
6. The low-rotation-speed optical induction motor for the laser radar of the unmanned automobile according to claim 5, wherein the number of the first screw holes is 3, and 3 first screw holes are arranged at equal angular intervals around the circumferential direction of the accommodating hole.
7. The low-rotation-speed optical induction motor for the laser radar of the unmanned automobile according to claim 5, wherein the cylindrical chassis is provided with second screw holes, and the second screw holes are matched with the positions and the number of the first screw holes on the upper surface of the rotating mirror.
8. The low-rotation-speed optical induction motor for the laser radar of the unmanned automobile according to claim 7, wherein the number of the second screw holes is 3, and the second screw holes are arranged at equal angle intervals around the circumferential direction of the convex column.
9. The low-speed optical induction motor for unmanned vehicle lidar of claim 1, wherein the turning mirror is an irregular quadrangular prism.
10. The low-rotation-speed optical induction motor for the laser radar of the unmanned automobile according to claim 1, wherein the magnetic induction component comprises a magnetic ring, the magnetic ring is in small clearance fit with the cavity wall of the hollow inner cavity of the rotating mirror, and the outer diameter of the magnetic ring is in the range of: 19.75 mm-19.8 mm, wherein the diameter of the inner cavity of the rotating mirror is in the range of: 19.8 mm-19.81 mm.
11. The low-rotation-speed optical induction motor for the laser radar of the unmanned automobile according to claim 1, wherein the magnetic induction assembly further comprises an optical code disc and an encoder, a containing cavity for containing the optical code disc is further formed in the bottom surface of the rotating mirror, and a glue dropping layer is arranged between the optical code disc and the cavity wall of the containing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320549004.XU CN219760783U (en) | 2023-03-15 | 2023-03-15 | Unmanned automobile laser radar low-rotation-speed photoinduction motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320549004.XU CN219760783U (en) | 2023-03-15 | 2023-03-15 | Unmanned automobile laser radar low-rotation-speed photoinduction motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219760783U true CN219760783U (en) | 2023-09-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320549004.XU Active CN219760783U (en) | 2023-03-15 | 2023-03-15 | Unmanned automobile laser radar low-rotation-speed photoinduction motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219760783U (en) |
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2023
- 2023-03-15 CN CN202320549004.XU patent/CN219760783U/en active Active
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