CN218514250U - External rotor motor with built-in encoder - Google Patents
External rotor motor with built-in encoder Download PDFInfo
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- CN218514250U CN218514250U CN202121642399.5U CN202121642399U CN218514250U CN 218514250 U CN218514250 U CN 218514250U CN 202121642399 U CN202121642399 U CN 202121642399U CN 218514250 U CN218514250 U CN 218514250U
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Abstract
The utility model provides an external rotor motor of built-in encoder, through setting up the first installation department that can hold the encoder completely, protect the encoder from the outside scratch, in order to improve the life of encoder; the purpose of protecting the magnetic ring is achieved by arranging a second mounting part for mounting the magnetic ring; the first installation part and the second installation part are arranged in parallel in the axial direction of the motor, so that the encoder and the magnetic ring are radially distributed, the installation volume of the encoder and the magnetic ring is reduced, and the volume of the outer rotor motor is further reduced. The outer rotor motor with the built-in encoder has the advantages of being simple in structure, stable to install, not prone to damage of the encoder, long in service life, small in size and the like.
Description
Technical Field
The utility model relates to a permanent-magnet machine technical field, concretely relates to external rotor electric machine of built-in encoder.
Background
The encoder is a precision measurement device which is closely combined with the machinery and the electronics, and encodes and converts signals or data for communication, transmission and storage of the signal data. The encoder is one kind of sensor, and it mainly used detects mechanical motion's speed, position, angle and distance, and in motor control, the encoder conveys the running state of motor to motor controller in real time, realizes speed governing, opening and stopping of motor, and the encoder plays the key role in motor control.
At present, some technical solutions for installing a code on a motor have been described in the prior art, for example, the publication number is: the invention patent of CN105449935B discloses an outer rotor motor, and specifically discloses that the outer rotor motor includes a stator shaft, a stator coupled with the stator shaft, and a rotor arranged at the periphery of the stator. The stator is provided with an armature, armature windings are uniformly wound on the armature, the inner wall of the rotor is provided with a permanent magnet patch, the outer rotor motor further comprises an encoder, and the encoder comprises a grating sheet matched with the stator shaft. This technical scheme sets up the encoder and installs on the external rotor electric machine to be provided with stator shaft complex grating piece, such mounting structure not only can make magnetic encoder receive the interference in external magnetic field, also can receive the magnetic field interference that motor stator coil produced moreover when the motor operation, make the encoder inaccurate to the testing result of motor.
For example, the authorization notice number is: the utility model discloses a CN 209016893U's utility model discloses a mounting structure of external rotor electric machine encoder, and specifically disclose this mounting structure and include the rotor, encoder and stator, the rotor includes shell and axle, the stator includes stator coil, drive PCB board and mounting panel, be equipped with the dead eye on the mounting panel, fixed mounting has the bearing in the dead eye, the axle cooperatees with the bearing, stator coil and drive PCB board pass through the bolt fastening on the mounting panel, the encoder is magnetic encoder or photoelectric encoder, be equipped with the constant head tank on the shell, signal magnetic ring or photoelectric signal code dish pass through glue and bond in the constant head tank, sensor PCB or photoelectric read head install in the stator upper end, sensor PCB or photoelectric read head pass through the connector and are connected to on the PCB, sensor PCB or photoelectric read head and drive PCB board electricity are connected. The encoder is installed inside the motor among this technical scheme, has avoided the encoder to receive the interference and the pollution of dust, greasy dirt of external light source or magnetic field, and the inside environment of motor is relatively stable, and the control of being convenient for to can protect fragile encoder. However, this technical scheme sets up the encoder between rotor and stator, and the encoder receives the scratch of other parts easily to cause the damage, reduces encoder life. On the other hand, the encoder and the magnetic ring in the motor are respectively arranged on the surface of the stator, and the installation position needs to be reserved in the machining process, so that the size and the machining cost of the motor are greatly increased.
From the content that prior art discloses, there are the encoder mounting structure of external rotor electric machine at present that the encoder receives external environment easily and disturbs, the testing result is inaccurate, receive easily that the scratch damages, life weak point etc. defects.
SUMMERY OF THE UTILITY MODEL
This disclosure has the encoder to exist among the prior art encoder mounting structure and receives external environment interference easily, the testing result is inaccurate, receive easily that the scratch damages, life is short, bulky scheduling problem, provides an external rotor electric machine of built-in encoder, the device that this disclosure provided has advantages such as simple structure, installation stability, encoder not fragile, long service life, small.
The conception of the disclosure is that the encoder is arranged on the outer rotor motor, and the running state of the motor is transmitted to the motor controller through the encoder, so that the speed regulation and the start and stop of the motor are controlled.
Further, another idea of the present disclosure is to change the installation position of the encoder on the motor to protect the encoder from being scratched by other components and prolong the service life.
Still further, another idea of the present disclosure is that a first mounting portion is provided on the stator for mounting the encoder, and the first mounting portion can completely accommodate the encoder, so that the encoder has no exposed portion on the surface of the stator, and the encoder is protected from being scratched by other components.
Still further, another idea of the present disclosure is to achieve the purpose that the encoder accurately detects the operation state of the motor by changing the installation position of the magnetic ring on the motor.
Furthermore, another idea of the present disclosure is that the rotor is provided with a second mounting portion corresponding to the first mounting portion, and the second mounting portion is used for mounting the magnetic ring, so that the encoder can accurately obtain the signal of the operating state of the motor, and the magnetic ring can be protected from being scratched, thereby prolonging the service life of the magnetic ring.
Still further, another idea of the present disclosure is that the first mounting portion and the second mounting portion are arranged in parallel in the motor axial direction, which greatly saves the encoder mounting volume.
Furthermore, the present disclosure provides an external rotor motor with a built-in encoder, which specifically includes a rotor and a stator, wherein the rotor and the stator are connected through a shaft;
the outer rotor motor further comprises an encoder, and the encoder is installed on the stator.
The encoder is one kind of sensor, and this technical scheme realizes the detection to the motor running state through installing the encoder on the motor. On the other hand, the stator is stationary on the motor, and the encoder is stably arranged on the stator and is not easy to be damaged due to the change of the motion state.
Furthermore, a first mounting part is arranged on the stator and used for mounting an encoder;
the encoder is accommodated completely to first installation department for the encoder does not have the exposed part on the stator surface, and the protection encoder does not receive other part scratches.
In the prior art, the encoder is arranged on the motor, and the exposed part of the encoder is easily scratched by other parts, so that the service life of the encoder is greatly shortened, and the running cost is improved. This technical scheme is used for installing the first installation department of encoder through setting up on the stator, and first installation department can hold the encoder completely for the encoder does not receive the purpose of scraping in order to reach the protection encoder, extension device life.
Furthermore, the outer rotor motor further comprises a magnetic ring, and the magnetic ring is arranged on the rotor.
In the technical scheme, the magnetic ring is arranged on the rotor and rotates along with the rotor, the encoder is arranged on the stator and does not stand still, the encoder senses the position of the magnetic ring, namely, the magnetic field information of the magnetic ring is detected, the encoder transmits the detected information to the motor controller, and the motor controller controls the outer rotor motor to work through signals transmitted by the encoder.
Furthermore, a second mounting part corresponding to the first mounting part is arranged on the rotor, and the second mounting part is used for mounting the magnetic ring.
The mounting position of the encoder is changed, and the mounting position of the magnetic ring is correspondingly changed, so that the encoder can accurately detect the position of the magnetic ring, the running state of the motor can be accurately obtained, and the accuracy of the detection result of the encoder is greatly improved.
Furthermore, the first installation part and the second installation part are parallel to each other in the axial direction of the outer rotor motor, so that the encoder and the magnetic ring are radially distributed.
According to the technical scheme, the first installation part and the second installation part are arranged in parallel, so that the encoder and the magnetic ring are in a radial distribution state, the installation volumes of the encoder and the magnetic ring are greatly reduced, and the volume of the outer rotor motor is reduced; the parallel arrangement also enables the encoder to still accurately acquire the position of the magnetic ring in the running state of the motor, so that an accurate detection result is obtained. Moreover, the protective encoder and the magnetic ring are not easy to scratch in the running state of the motor, and the service life of the device is prolonged.
In some embodiments, the first mounting portion is integral with the stator, and the first mounting portion is fixedly connected to the encoder.
In some embodiments, the second mounting portion is integrated with the rotor, and the second mounting portion is fixedly connected with the magnetic ring.
The structure in the embodiment is simple and stable, and the processing cost is low.
The application provides a pair of external rotor electric machine of built-in encoder includes rotor and stator, and the rotor passes through the hub connection with the stator, installs the encoder on the stator, installs the magnetic ring on the rotor, and the magnetic ring is rotary motion along with the rotor, and the encoder obtains magnetic field information through the position that detects the magnetic ring, and then carries the information that obtains to machine controller, and machine controller passes through the information control motor operation that the encoder carried.
According to the outer rotor motor with the built-in encoder, the first installation part capable of completely accommodating the encoder is arranged, so that the encoder is protected from being scratched from the outside, and the service life of the encoder is prolonged; the purpose of protecting the magnetic ring is achieved by arranging a second mounting part for mounting the magnetic ring; the first installation part and the second installation part are arranged in parallel in the motor axial direction, so that the encoder and the magnetic ring are radially distributed, the installation volume of the encoder and the magnetic ring is reduced, and the volume of the outer rotor motor is further reduced. The outer rotor motor with the built-in encoder has the advantages of simple structure, stable installation, difficult damage of the encoder, long service life, small size and the like.
Drawings
The present disclosure will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and should not be taken as limiting the scope of the present disclosure. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on the concept of a composition or construction of the object being described and may include exaggerated displays and are not necessarily drawn to scale.
FIG. 1: the invention discloses a sectional schematic diagram of an outer rotor structure of a built-in encoder;
wherein, 1, rotor; 2. a stator; 3. a shaft; 4. an encoder; 5. a first mounting portion; 6. a magnetic ring; 7. a second mounting portion.
Detailed Description
The present disclosure is described in detail below with reference to the attached drawings.
In order to make the objects, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the disclosure and are not intended to limit the disclosure.
Fig. 1 is a specific embodiment of the present disclosure, specifically as follows:
the embodiment specifically provides an outer rotor 1 motor with a built-in encoder 4, and the device has the advantages of simple structure, stable installation, difficult damage of the encoder 4, long service life, small size and the like, and comprises a rotor 1 and a stator 2, wherein the rotor 1 is connected with the stator 2 through a shaft 3;
the outer rotor 1 motor further comprises an encoder 4, and the encoder 4 is installed on the stator 2.
The encoder 4 is one kind of sensor, and this technical scheme realizes the detection to motor running state through installing encoder 4 on the motor. On the other hand, the stator 2 is stationary on the motor, and the encoder 4 is stably mounted on the stator 2 and is not easily damaged due to the change of the motion state.
Furthermore, the present disclosure may also provide another embodiment, which is as follows:
the idea of this embodiment is mainly to protect the encoder 4 by providing the first mounting portion 5.
The embodiment specifically provides an outer rotor 1 motor with a built-in encoder 4, and the device has the advantages of simple structure, stable installation, difficult damage of the encoder 4, long service life, small size and the like, and comprises a rotor 1 and a stator 2, wherein the rotor 1 is connected with the stator 2 through a shaft 3; the outer rotor 1 motor also comprises an encoder 4, and the encoder 4 is arranged on the stator 2;
the stator 2 is provided with a first mounting part 5, and the first mounting part 5 is used for mounting the encoder 4;
In the prior art, the encoder 4 is installed on the motor, and the exposed part of the encoder is easily scratched by other parts, so that the service life of the encoder is greatly shortened, and the operation cost is improved. This technical scheme is used for installing encoder 4's first installation department 5 through setting up on stator 2, and first installation department 5 can hold encoder 4 completely for encoder 4 does not receive the purpose of scraping in order to reach protection encoder 4, extension device life.
Furthermore, the present disclosure may also provide another embodiment, which is as follows:
the idea of this embodiment is mainly that the purpose of protecting the magnetic ring 6 is achieved by providing a second mounting portion 7 for mounting the magnetic ring 6.
The embodiment specifically provides an outer rotor 1 motor with a built-in encoder 4, and the device has the advantages of simple structure, stable installation, difficult damage of the encoder 4, long service life, small size and the like, and comprises a rotor 1 and a stator 2, wherein the rotor 1 is connected with the stator 2 through a shaft 3; the outer rotor 1 motor also comprises an encoder 4, and the encoder 4 is arranged on the stator 2; the stator 2 is provided with a first mounting part 5, and the first mounting part 5 is used for mounting the encoder 4; the first mounting part 5 completely accommodates the encoder 4, so that the encoder 4 has no exposed part on the surface of the stator 2, and the encoder 4 is protected from being scratched by other parts;
the outer rotor 1 motor also comprises a magnetic ring 6, and the magnetic ring 6 is arranged on the rotor 1;
and a second mounting part 7 corresponding to the first mounting part 5 is arranged on the rotor 1, and the second mounting part 7 is used for mounting a magnetic ring 6.
In the technical scheme, the magnetic ring 6 is arranged on the rotor 1 and rotates along with the rotor 1, the encoder 4 is arranged on the stator 2 and does not stand still, the encoder 4 senses the position of the magnetic ring 6, namely, the magnetic field information of the magnetic ring 6 is detected, the encoder 4 transmits the detected information to the motor controller, and the motor controller controls the motor of the outer rotor 1 to work through signals transmitted by the encoder 4. This application is through the mounted position who changes encoder 4, and then the corresponding mounted position who changes magnetic ring 6 for encoder 4 can be accurate detection magnetic ring 6's position, and then accurate acquisition motor operation conditions, has improved encoder 4 testing result's accuracy greatly.
Furthermore, the present disclosure may also provide another embodiment, which is as follows:
the idea of this embodiment is mainly to reduce the volume of the motor by arranging the first mounting portion 5 in parallel with the second mounting portion 7 in the motor axial direction.
The embodiment specifically provides an outer rotor 1 motor with a built-in encoder 4, and the device has the advantages of simple structure, stable installation, difficult damage of the encoder 4, long service life, small size and the like, and comprises a rotor 1 and a stator 2, wherein the rotor 1 is connected with the stator 2 through a shaft 3; the outer rotor 1 motor also comprises an encoder 4, and the encoder 4 is arranged on the stator 2; the stator 2 is provided with a first mounting part 5, and the first mounting part 5 is used for mounting the encoder 4; the first mounting part 5 completely accommodates the encoder 4, so that the encoder 4 has no exposed part on the surface of the stator 2, and the encoder 4 is protected from being scratched by other parts; the outer rotor 1 motor also comprises a magnetic ring 6, and the magnetic ring 6 is arranged on the rotor 1; a second mounting part 7 corresponding to the first mounting part 5 is arranged on the rotor 1, and the second mounting part 7 is used for mounting a magnetic ring 6;
the first installation part 5 and the second installation part 7 are parallel in the motor axial direction of the outer rotor 1, so that the encoder 4 and the magnetic ring 6 are distributed in a radial direction.
According to the technical scheme, the encoder 4 and the magnetic ring 6 are in a radial distribution state by arranging the first installation part 5 and the second installation part 7 in parallel, so that the installation volumes of the encoder 4 and the magnetic ring 6 are greatly reduced, and the volume of the outer rotor 1 motor is reduced; the parallel arrangement also enables the encoder 4 to accurately acquire the position of the magnetic ring 6 in the motor running state, so as to obtain an accurate detection result. Moreover, the protective encoder 4 and the magnetic ring 6 are not easy to scratch in the running state of the motor, and the service life of the device is prolonged.
The first mounting part 5 and the stator 2 are integrated, and the first mounting part 5 is fixedly connected with the encoder 4;
the second mounting part 7 and the rotor 1 are integrated, and the second mounting part 7 is fixedly connected with the magnetic ring 6.
The embodiment has the advantages of simple and stable structure and low processing cost.
The application provides a pair of 1 motor of external rotor of built-in encoder 4 includes rotor 1 and stator 2, rotor 1 is connected through axle 3 with stator 2, install encoder 4 on the stator 2, install magnetic ring 6 on the rotor 1, rotary motion is to magnetic ring 6 along with rotor 1, encoder 4 obtains magnetic field information through the position that detects magnetic ring 6, and then carries the information that obtains to machine controller, machine controller passes through the information control motor operation that encoder 4 carried.
According to the outer rotor 1 motor with the built-in encoder 4, the encoder 4 is protected from being scratched by the outside through the arrangement of the first installation part 5 capable of completely accommodating the encoder 4, so that the service life of the encoder 4 is prolonged; the purpose of protecting the magnetic ring 6 is achieved by arranging a second mounting part 7 for mounting the magnetic ring 6; the first installation part 5 and the second installation part 7 are arranged in parallel in the axial direction of the motor, so that the encoder 4 and the magnetic ring 6 are distributed in the radial direction, the installation volume of the encoder 4 and the magnetic ring 6 is reduced, and the volume of the motor of the outer rotor 1 is further reduced. The outer rotor 1 motor with the built-in encoder 4 has the advantages of simple structure, stable installation, difficult damage of the encoder 4, long service life, small size and the like.
The present disclosure has been described in detail above, and the principles and embodiments of the present disclosure have been explained herein using specific examples, which are provided only to assist understanding of the present disclosure and the core concepts. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present disclosure without departing from the principle of the present disclosure, and such improvements and modifications also fall within the scope of the claims of the present disclosure.
Claims (8)
1. The outer rotor motor with the built-in encoder is characterized by comprising a rotor and a stator;
the outer rotor motor also comprises an encoder, and the encoder is arranged on the stator;
the stator is provided with a first mounting part, and the first mounting part is used for mounting an encoder;
the encoder is accommodated completely to first installation department for the encoder does not have the exposed part on the stator surface, and the protection encoder does not receive other part scratches.
2. The external rotor motor with an internal encoder as claimed in claim 1, further comprising a magnetic ring, wherein the magnetic ring is mounted on the rotor.
3. The external rotor motor with an internal encoder as claimed in claim 2, wherein a second mounting portion corresponding to the first mounting portion is provided on the rotor, and the second mounting portion is used for mounting the magnetic ring.
4. The external rotor motor with an internal encoder according to claim 3, wherein the first mounting portion and the second mounting portion are parallel to each other in the direction of the axis of the external rotor motor.
5. The external rotor motor with built-in encoder as claimed in claim 4, wherein the encoder and the magnetic ring are radially distributed.
6. The external rotor motor with an internal encoder according to claim 1, wherein the rotor is connected to the stator through a shaft.
7. The external rotor motor with an internal encoder as claimed in claim 1, wherein the first mounting portion is integrated with the stator, and the first mounting portion is fixedly connected with the encoder.
8. The external rotor motor with built-in encoder as claimed in claim 3, wherein the second mounting portion is integrated with the rotor, and the second mounting portion is fixedly connected with the magnetic ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121642399.5U CN218514250U (en) | 2021-07-19 | 2021-07-19 | External rotor motor with built-in encoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121642399.5U CN218514250U (en) | 2021-07-19 | 2021-07-19 | External rotor motor with built-in encoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218514250U true CN218514250U (en) | 2023-02-21 |
Family
ID=85205459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121642399.5U Active CN218514250U (en) | 2021-07-19 | 2021-07-19 | External rotor motor with built-in encoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218514250U (en) |
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2021
- 2021-07-19 CN CN202121642399.5U patent/CN218514250U/en active Active
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