CN218183188U - Optical encoder has geared hub motor - Google Patents
Optical encoder has geared hub motor Download PDFInfo
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- CN218183188U CN218183188U CN202222250544.6U CN202222250544U CN218183188U CN 218183188 U CN218183188 U CN 218183188U CN 202222250544 U CN202222250544 U CN 202222250544U CN 218183188 U CN218183188 U CN 218183188U
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- hub motor
- circuit board
- outer rotor
- encoder circuit
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Abstract
The utility model relates to an optical encoder with a gear hub motor, which comprises an inner stator, an optical encoder and an outer rotor, wherein the outer rotor is rotationally sleeved outside the inner stator, and the optical encoder comprises an optical encoder circuit board and a code disc; a supporting body is arranged in the outer rotor, the supporting body is of a cavity structure, a gear is arranged outside the outer rotor, and the gear and the supporting body are concentric and communicated; the optical encoder circuit board is arranged in the inner stator and is in a sector shape; the coded disc is arranged in the support body, and the optical encoder circuit board and the coded disc are arranged oppositely; the utility model discloses utilize the inside cavity construction installation fan-shaped optical encoder circuit board of inner stator, utilize the position installation annular code wheel of external rotor installation bearing, need not other mounting structure for there is gear hub motor inner structure compactness wholly, keeps there being gear hub motor structure little, occupy small characteristics, solves because no gear hub motor inner space structure is convenient for install optical encoder and has the little problem that is difficult to install optical encoder of gear hub motor inner space.
Description
Technical Field
The utility model relates to an optical encoder has gear hub motor belongs to there is gear hub motor technical field.
Background
The hub motor with gears is a torque output by a rotating part in the motor to drive a speed change mechanism consisting of gears, a large gear on an outer rotor is an intermediate gear, the intermediate gear transmits force to three gears, the three gears transmit the acting force to the large gear in a hub, and finally the external gear fixed on the hub transmits the power to rotate a wheel.
At present, the existing gear hub motor structure is widely applied, along with the increase of application fields, the requirements on the gear hub motor structure are stricter, for example, the application fields need high-precision speed control and information feedback, the existing motor is only used as a power source of an electric appliance or various machines, the motor cannot be controlled accurately and feedback control on the motor is realized, manpower is often needed, labor force is increased, and the working efficiency is low.
For example, the chinese utility model patent with the publication number CN 216649481U discloses an optical coding hub motor, which comprises a stator, a rotor and an optical encoder; the optical encoder comprises a code reader and a reflection code disc; the stator is arranged in the rotor, the code reader is arranged on the stator, the reflection code disc is arranged on the rotor, and the code reader and the reflection code disc are arranged oppositely; the hub motor is a gearless hub motor, so that the structure is large, the volume is heavy, the occupied space is large, and the output torque is far lower than that of a hub motor with a gear; the inner cavity structure of the inner stator and the inner cavity structure of the outer rotor of the gearless hub motor are larger than the inner cavity structure of the inner stator and the inner cavity structure of the outer rotor of the gearless hub motor, so that a larger cavity is provided for installing the optical encoder, while the inner cavity structure of the inner stator and the inner cavity structure of the outer rotor of the gearless hub motor are small, so that the optical encoder is inconvenient to install, and the existing gearless hub motor is provided with the optical encoder.
Therefore, the optical encoder is designed aiming at the problem that the internal cavity structure of the geared hub motor is small, the high-precision speed control and information feedback of the geared hub motor are realized, and the motor is small in structure and small in occupied space.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the problem that above-mentioned prior art exists, the optical encoder that provides a can realize speed control and information feedback, simple structure of high accuracy has geared hub motor.
The utility model aims at realizing through the following technical scheme that an optical encoder is provided with a gear hub motor, which comprises an inner stator and an outer rotor, wherein the inner part of the outer rotor is of a cavity structure, the outer rotor is rotatably sleeved outside the inner stator, and the optical encoder comprises an optical encoder circuit board and a code disc; a supporting body is arranged in the cavity structure of the outer rotor, the supporting body is of a cavity structure, a gear is arranged outside the outer rotor, and the gear and the supporting body are concentric and are communicated; the optical encoder circuit board is arranged in the inner stator and is fan-shaped; the coded disc is arranged in the supporting body, and the optical encoder circuit board and the coded disc are arranged oppositely.
The optical encoder circuit board is provided with a lead, the lead is connected with the controller, the coded disc is a reflection coded disc, the coded disc is provided with a circle and is carved with scales, the optical encoder circuit board is provided with a coupling element optical head, one is a transmitting tube and the other is a receiving tube, and the coded disc is refracted to form a pulse signal so as to realize the control of the motor speed of the gear hub or the feedback of information.
Preferably, be equipped with the cavity in the supporter, the cavity is concentric with the supporter and link up with the gear, the length of cavity is less than the length of supporter, and the terminal surface of cavity one end forms the mounting groove with the inner wall of supporter.
Preferably, a bearing is installed in the hollow cavity, the coded disc is of an annular structure, and the coded disc is installed in the installation groove; the coded disc is concentric with the bearing.
Preferably, the outer diameter of the coded disc is equal to the inner diameter of the support body, and the inner diameter of the coded disc is smaller than the diameter of the bearing.
Preferably, the inner edge of the code wheel is located on the outer edge of the bearing.
Preferably, the bottom of the coded disc is connected with the mounting groove through silica gel.
Utilize the inside cavity structure installation bearing of outer rotor, the position installation code wheel of ingenious utilization installation bearing, and the installation code wheel need not other mounting structure for install the code wheel in the outer rotor that the space structure is little originally, keep having the structure that gear hub motor originally, can not additionally increase the weight or the volume that have gear hub motor.
Preferably, the inner stator comprises a plurality of first permanent magnets, a plurality of coil groups and an inner core, the inner core is of a cavity structure, a through hole is formed in the middle of the inner core, a pivot is arranged in the through hole, the coil groups are uniformly distributed on the outer wall of the inner core in a surrounding mode, and the first permanent magnets are uniformly distributed on the outer wall of the coil groups in a surrounding mode.
Preferably, the bottom of the optical encoder circuit board is installed in the cavity structure of the inner core, the outer diameter of the optical encoder circuit board is equal to the inner diameter of the inner core, and the inner diameter of the optical encoder circuit board is equal to the outer diameter of the through hole.
Utilize the inside cavity structure of inner stator, install the optical encoder circuit board, and need not other mounting structure for overall structure is simple.
Preferably, a fan-shaped base is arranged in the cavity structure of the inner core, and the optical encoder circuit board is installed on the base.
The cavity structure in the base can conveniently arrange the wire of optical encoder circuit board.
Preferably, a plurality of second permanent magnets are uniformly distributed on the inner wall of the outer rotor in a surrounding manner.
The utility model discloses following beneficial effect has: (1) The utility model discloses utilize the inside cavity structure installation fan-shaped optical encoder circuit board of inner stator, and need not other mounting structure, utilize the position installation annular code wheel of external rotor installation bearing, and need not other mounting structure, utilize the inside cavity structure of inner stator to set up the base in addition, conveniently arrange the wire of optical encoder circuit board, make wholly there be gear hub motor inner structure compact, it is little to keep there being gear hub motor structure, occupy small characteristics, solve because no gear hub motor inner space structure is equipped with in installation optical encoder and there is the little problem that is difficult to installation optical encoder of gear hub motor inner space.
(2) The utility model discloses install optical encoder in having gear hub motor, carry out accurate control to the functioning speed who has gear hub motor through controller or programming, owing to there is gear hub motor's small, the moment of torsion is big, but the wide application is in aspects such as industry, agricultural automated control.
Drawings
Fig. 1 is an exploded schematic view of embodiment 1 of the present invention.
Fig. 2 is a schematic side view of an inner stator in embodiment 1 of the present invention.
Fig. 3 is an exploded schematic view of embodiment 2 of the present invention.
Fig. 4 is a schematic side view of the inner stator in embodiment 2 of the present invention.
Fig. 5 is a schematic view of an outer rotor structure.
Fig. 6 is a schematic structural view of the outer rotor with a hollow cavity and a mounting groove therein.
FIG. 7 is a schematic view of the structure of the outer rotor with the bearing and the code wheel.
Fig. 8 is a side schematic view of the outer rotor.
Fig. 9 is a sectional view of the outer rotor.
In the figure: 1 inner stator, 1-1 first permanent magnet, 1-2 coil group, 1-3 inner core, 1-4 pivot, 2 optical encoder circuit board, 3 coded disc, 4 outer rotor, 4-1 second permanent magnet, 4-2 gear, 5 base, 6 support, 7 hollow cavity, 8 mounting groove, 9 bearing.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings and the accompanying specification.
Example 1
An optical encoder is provided with a gear hub motor, which comprises an inner stator 1, an optical encoder and an outer rotor 4, wherein the outer rotor 4 is rotationally sleeved outside the inner stator 1.
The inner stator 1 comprises a plurality of first permanent magnets 1-1, a plurality of coil groups 1-2 and an inner core 1-3, wherein the inner core 1-3 is of a cavity structure, a through hole is formed in the middle of the inner core, a pivot 1-4 is installed in the through hole, the coil groups 1-2 are uniformly distributed on the outer wall of the inner core 1-3 in a surrounding mode, and the first permanent magnets 1-1 are uniformly distributed on the outer wall of the coil groups 1-2 in a surrounding mode.
The optical encoder comprises an optical encoder circuit board 2 and a coded disc 3, wherein the optical encoder circuit board 2 is of a fan-shaped structure, and the coded disc 3 is of an annular structure; the optical encoder circuit board 2 is provided with a plurality of conducting wires which are electrically connected with the controller; the bottom of the optical encoder circuit board 2 is installed in the cavity structure of the inner core 1-3 through silica gel, the outer diameter of the optical encoder circuit board 2 is equal to the inner diameter of the inner core 1-3, and the inner diameter of the optical encoder circuit board 2 is equal to the outer diameter of the through hole.
The inner part of the outer rotor 4 is of a cavity structure, and a plurality of second permanent magnets 4-1 are uniformly distributed on the inner wall of the outer rotor 4 in a surrounding manner; a supporting body 6 is arranged in a cavity structure of the outer rotor 4, the supporting body 6 is of a cavity structure, a hollow cavity 7 is arranged in the cavity structure, the hollow cavity and the supporting body 6 are concentric, the length of the hollow cavity 7 is smaller than that of the supporting body 6, and an installation groove 8 is formed between the end face of one end of the hollow cavity 7 and the inner wall of the supporting body 6; a bearing 9 is installed in the hollow cavity 7, and the bottom of the coded disc 3 is installed in the installation groove 8 through silica gel; the coded disc 3 and the bearing 9 are concentric, the outer diameter of the coded disc 3 is equal to the inner diameter of the support body 6, the inner diameter of the coded disc 3 is smaller than the diameter of the bearing 9, the inner edge of the coded disc 3 is positioned on the outer edge of the bearing 9, and when the outer rotor 4 is sleeved outside the inner stator 1, the optical encoder circuit board 2 and the coded disc 3 are arranged oppositely; the outer rotor is externally provided with a gear 4-2, the gear 4-2 is concentric with the support body 6, and a bearing 9 is communicated with the gear 4-2.
Further, the inner core 1-3 is internally provided with a threading hole for a lead wire of the optical encoder circuit board to pass through, so that the optical encoder circuit board is conveniently and electrically connected with the controller.
Further, fixing holes are formed in the optical encoder circuit board 2, corresponding fixing holes are formed in the cavity structures of the inner cores 1-3, and the optical encoder circuit board 2 is installed in the cavity structures of the inner cores 1-3 through screws.
The working principle is as follows: firstly, uniformly installing a plurality of coil groups 1-2 on the outer wall of an inner core 1-3 in a surrounding manner, uniformly installing a plurality of first permanent magnets 1-1 on the periphery of the coil groups 1-2 in a surrounding manner, and installing a pivot 1-4 in a through hole in the middle of the inner core 1-3 to form an inner stator 1 structure;
then, the fan-shaped optical encoder circuit board 2 is arranged in the cavity structure of the inner core 1-3 by silica gel and is just clamped between the inner wall of the inner core 1-3 and the through hole, and a lead of the optical encoder circuit board passes through the threading hole of the inner core 1-3;
subsequently, the bearing 9 is installed in the hollow cavity 7, and the code wheel 3 is installed in the installation groove 8 through silica gel;
and finally, one end of the pivot shaft 1-4 penetrates through the bearing 9 and penetrates out of the gear 4-2, the outer rotor 4 is rotatably sleeved outside the inner stator 1, the optical encoder circuit board 2 and the code disc are oppositely arranged, a lead of the optical encoder circuit board 2 is electrically connected with the controller, and pulses are formed by the code disc through light refraction of the optical encoder so as to realize control of the speed of the motor with the gear hub or feedback of information.
Example 2
An optical encoder is provided with a gear hub motor, which comprises an inner stator 1, an optical encoder and an outer rotor 4, wherein the outer rotor 4 is rotatably sleeved outside the inner stator 1.
The inner stator 1 comprises a plurality of first permanent magnets 1-1, a plurality of coil groups 1-2 and an inner core 1-3, wherein the inner core 1-3 is of a cavity structure, a through hole is formed in the middle of the inner core 1-3, a pivot 1-4 is installed in the through hole, the coil groups 1-2 are uniformly distributed on the outer wall of the inner core 1-3 in a surrounding mode, and the first permanent magnets 1-1 are uniformly distributed on the outer wall of the coil groups 1-2 in a surrounding mode; a fan-shaped base 5 is arranged in the cavity structure of the inner core 1-3, and the edge of the optical encoder circuit board 2 is installed on the base 5 through silica gel.
The optical encoder comprises an optical encoder circuit board 2 and a coded disc 3, wherein the optical encoder circuit board 2 is of a fan-shaped structure, and the coded disc 3 is of an annular structure; the optical encoder circuit board 2 is provided with a plurality of conducting wires which are electrically connected with the controller; the bottom of the optical encoder circuit board 2 is installed in the cavity structure of the inner core 1-3 through silica gel, the outer diameter of the optical encoder circuit board 2 is equal to the inner diameter of the inner core 1-3, and the inner diameter of the optical encoder circuit board 2 is equal to the outer diameter of the through hole.
The inner part of the outer rotor 4 is of a cavity structure, and a plurality of second permanent magnets 4-1 are uniformly distributed on the inner wall of the outer rotor 4 in a surrounding manner; a supporting body 6 is arranged in a cavity structure of the outer rotor 4, the supporting body 6 is of a cavity structure, a hollow cavity 7 is arranged in the cavity structure, the hollow cavity and the supporting body 6 are concentric, the length of the hollow cavity 7 is smaller than that of the supporting body 6, and an installation groove 8 is formed between the end face of one end of the hollow cavity 7 and the inner wall of the supporting body 6; a bearing 9 is installed in the hollow cavity 7, and the bottom of the coded disc 3 is installed in the installation groove 8 through silica gel; the coded disc 3 and the bearing 9 are concentric, the outer diameter of the coded disc 3 is equal to the inner diameter of the support body 6, the inner diameter of the coded disc 3 is smaller than the diameter of the bearing 9, the inner edge of the coded disc 3 is positioned on the outer edge of the bearing 9, and when the outer rotor 4 is sleeved outside the inner stator 1, the optical encoder circuit board 2 and the coded disc 3 are arranged oppositely; the outer rotor is externally provided with a gear 4-2, the gear 4-2 is concentric with the support body 6, and a bearing 9 is communicated with the gear 4-2.
And a threading hole is further formed in the base 5 and used for penetrating through a wire of the optical encoder circuit board, so that the optical encoder circuit board is conveniently and electrically connected with the controller.
Further, a fixing hole is provided in the optical encoder circuit board 2, a fixing hole corresponding to the fixing hole is provided in the base 5, and the optical encoder circuit board 2 is mounted on the base 5 with a screw.
The working principle is as follows: firstly, uniformly installing a plurality of coil groups 1-2 on the outer wall of an inner core 1-3 in a surrounding manner, uniformly installing a plurality of first permanent magnets 1-1 on the periphery of the coil groups 1-2 in a surrounding manner, and installing a pivot 1-4 in a through hole in the middle of the inner core 1-3 to form an inner stator 1 structure;
then, the fan-shaped optical encoder circuit board 2 is installed on the fan-shaped base 5 through silica gel, and a lead of the optical encoder circuit board penetrates through a threading hole in the base 5;
subsequently, the bearing 9 is installed in the hollow cavity 7, and the code wheel 3 is installed in the installation groove 8 through silica gel;
and finally, one end of the pivot shaft 1-4 penetrates through the bearing 9 and penetrates out of the gear 4-2, the outer rotor 4 is rotatably sleeved outside the inner stator 1, the optical encoder circuit board 2 is arranged opposite to the code disc, a lead of the optical encoder circuit board 2 is electrically connected with the controller, and the code disc refracts light of the optical encoder to form a pulse signal so as to realize control of the speed of the gear hub motor or feedback of information.
The above is only the preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made by the technical matters of the present invention to the above embodiments should be included in the protection scope of the present invention.
Claims (10)
1. An optical encoder has geared hub motor, includes internal stator (1), outer rotor (4), the inside cavity structure that is of outer rotor (4), outer rotor (4) is rotatory the cover outside internal stator (1), characterized by: the optical encoder comprises an optical encoder circuit board (2) and a code disc (3); a supporting body (6) is arranged in the cavity structure of the outer rotor (4), the supporting body (6) is of a cavity structure, a gear (4-2) is arranged outside the outer rotor (4), and the gear (4-2) is concentric with and communicated with the supporting body (6); the optical encoder circuit board (2) is arranged in the inner stator (1), and the optical encoder circuit board (2) is in a fan shape; the coded disc (3) is arranged in the support body (6), and the optical encoder circuit board (2) and the coded disc (3) are arranged oppositely.
2. An optical encoder geared hub motor as claimed in claim 1, wherein: the gear support is characterized in that a hollow cavity (7) is arranged in the support body (6), the hollow cavity (7) is concentric with the support body (6) and communicated with the gear (4-2), the length of the hollow cavity (7) is smaller than that of the support body (6), and an installation groove (8) is formed between the end face of one end of the hollow cavity (7) and the inner wall of the support body (6).
3. An optical encoder geared hub motor as claimed in claim 2, wherein: a bearing (9) is installed in the hollow cavity (7), the coded disc (3) is of an annular structure, and the coded disc (3) is installed in the installation groove (8); the coded disc (3) and the bearing (9) are concentric.
4. An optical encoder geared hub motor as claimed in claim 3, wherein: the outer diameter of the coded disc (3) is equal to the inner diameter of the support body (6), and the inner diameter of the coded disc (3) is smaller than the diameter of the bearing (9).
5. An optical encoder geared hub motor as claimed in claim 3, wherein: the inner edge of the code wheel (3) is located on the outer edge of the bearing (9).
6. An optical encoder geared hub motor as claimed in claim 3, wherein: the bottom of the coded disc (3) is connected with the mounting groove (8) through silica gel.
7. An optical encoder geared hub motor as claimed in claim 1, wherein: the inner stator (1) comprises a plurality of first permanent magnets (1-1), a plurality of coil groups (1-2) and an inner core (1-3), the inner core (1-3) is of a cavity structure, a through hole is formed in the middle of the inner core, a pivot (1-4) is arranged in the through hole, the coil groups (1-2) are uniformly distributed on the outer wall of the inner core (1-3) in a surrounding mode, and the first permanent magnets (1-1) are uniformly distributed on the outer wall of the coil groups (1-2) in a surrounding mode.
8. An optical encoder geared hub motor as claimed in claim 7, wherein: the bottom of the optical encoder circuit board (2) is arranged in a cavity structure of the inner core (1-3), the outer diameter of the optical encoder circuit board (2) is equal to the inner diameter of the inner core (1-3), and the inner diameter of the optical encoder circuit board (2) is equal to the outer diameter of the through hole.
9. An optical encoder geared hub motor as claimed in claim 7, wherein: a fan-shaped base (5) is arranged in the cavity structure of the inner core (1-3), and the optical encoder circuit board (2) is installed on the base (5).
10. An optical encoder geared hub motor as claimed in claim 1, wherein: and a plurality of second permanent magnets (4-1) are uniformly distributed on the inner wall of the outer rotor (4) in a surrounding manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222250544.6U CN218183188U (en) | 2022-08-26 | 2022-08-26 | Optical encoder has geared hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222250544.6U CN218183188U (en) | 2022-08-26 | 2022-08-26 | Optical encoder has geared hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218183188U true CN218183188U (en) | 2022-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222250544.6U Active CN218183188U (en) | 2022-08-26 | 2022-08-26 | Optical encoder has geared hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218183188U (en) |
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2022
- 2022-08-26 CN CN202222250544.6U patent/CN218183188U/en active Active
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