CN109831072B - Motor with a motor housing - Google Patents
Motor with a motor housing Download PDFInfo
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- CN109831072B CN109831072B CN201910130590.2A CN201910130590A CN109831072B CN 109831072 B CN109831072 B CN 109831072B CN 201910130590 A CN201910130590 A CN 201910130590A CN 109831072 B CN109831072 B CN 109831072B
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- encoder
- motor
- hub
- brake
- rear cover
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- 230000004323 axial length Effects 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Abstract
The application relates to the technical field of electric appliances, in particular to a motor. According to the motor that this application embodiment provided, it is including motor body, stopper and the encoder that sets gradually, the stopper is including the cover locating motor's pivot epaxial wheel hub, the encoder includes code wheel, electron body and encoder back lid, the encoder back lid is located motor one end, the code wheel is fixed wheel hub orientation one side of encoder back lid. The encoder is designed to be combined with the hub structure of the brake, so that the overall structure size of the motor is shortened, the motor shaft vibration caused by overlong axial length is reduced, the overall performance of the motor is improved, in addition, the encoder is fixed on the hub, the larger mounting area of the encoder can be provided, the encoder can be subdivided more due to the change of the size structure, and the encoder precision is improved.
Description
Technical Field
The application relates to the technical field of electric appliances, in particular to a motor.
Background
The conventional motor structure is shown in fig. 1, and the motor comprises a motor body consisting of a rotating shaft 1', a stator core 2', a rotor core 3', a brake and an encoder, wherein the brake comprises a brake stator 4', an armature 5', a friction plate 6' and a hub 7' which are sequentially arranged, and the encoder comprises an encoder end cover 8', a code disc 9', an electronic body 10' and an encoder rear cover 11'. In the motor, the code wheel 9 'of the encoder is fixed on the rotating shaft 1' of the motor by means of screws and the like, the size of the code wheel 9 'of the encoder is limited by the mounting mode, the code wheel 9' of the encoder cannot be subdivided more due to the limitation of a size structure, the encoder precision is low, and the motor structure shown in fig. 1 causes motor shaft vibration due to overlong axial length, so that the overall performance of the motor is reduced; in addition, the electronic body 10 'of the encoder shown in fig. 1 is installed in the encoder rear cover 11', and the encoder is often abnormal due to rapid rise of heat generation during the operation of the motor; in the braking process, phenomena such as pollution signal loss of the code disc and the like can also occur due to dust generated and scattered to the code disc of the encoder along with the shaft end.
Disclosure of Invention
In order to solve the technical problems, the technical scheme is that the whole structure size of the motor can be shortened, the overall performance of the motor is improved, and the technical problem that the motor shaft vibration is influenced due to overlong axial length is solved.
The embodiment of the application provides a motor. According to the motor that this application embodiment provided, it is including motor body, stopper and the encoder that sets gradually, the stopper is including the cover locating motor's pivot epaxial wheel hub, the encoder includes code wheel, electron body and encoder back lid, the encoder back lid is located motor one end, the code wheel is fixed wheel hub orientation one side of encoder back lid.
Further, a boss coaxial with the hub is formed on one side of the hub facing the rear cover of the encoder, and the code wheel is fixed on one side of the boss facing the rear cover of the encoder.
Further, the encoder further comprises an encoder end cover arranged between the hub and the encoder rear cover, the encoder end cover is provided with a through hole coaxial with the rotating shaft, and the diameter of the through hole is larger than that of the code wheel.
Further, one end of the shaft is located between the hub and the encoder end cap.
Further, the electronic body and the rear cover of the encoder are attached to one side, facing the hub, of the electronic body.
Further, the brake further comprises a brake stator, an armature and a friction plate which are sequentially arranged along the axial direction, and the friction plate is arranged between the armature and the hub.
Further, the brake further comprises a brake shell, a first annular groove is formed in the circumferential surface of the boss, and a second annular groove opposite to the first annular groove is formed in the brake shell.
Further, the first ring groove and the second ring groove are correspondingly provided with a plurality of groups.
Further, a felt is arranged on one side of the encoder end cover facing the hub.
Further, the felt is annularly arranged along the rotating shaft.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages: the encoder is designed to be combined with the hub structure of the brake, so that the overall structure size of the motor is shortened, the motor shaft vibration caused by overlong axial length is reduced, the overall performance of the motor is improved, in addition, the encoder is fixed on the hub, the larger mounting area of the encoder can be provided, the encoder can be subdivided more due to the change of the size structure, and the encoder precision is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic cross-sectional view of a prior art motor;
fig. 2 is a schematic cross-sectional structure of a motor according to an embodiment of the present application.
In the figure:
1', a rotating shaft; 2', stator core; 3', a rotor core; 4', a brake stator; 5', an armature; 6', friction plate; 7', a hub; 8', encoder end caps; 9', a code wheel; 10', an electronic body; 11', an encoder back cover; 1. a motor body; 101. a rotating shaft; 102 a stator core; 103. a rotor core; 104. a housing; 105. a bearing; 2. a brake; 201. a hub; 202. a boss; 203. a brake stator; 204. an armature; 205. a friction plate; 206. a brake housing; 207. a first ring groove; 208. a second ring groove; 3. an encoder; 301. a code wheel; 302. an electronic body; 303. an encoder back cover; 304. an encoder end cap; 305. a felt.
Detailed Description
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "connected," "secured" and "affixed" are to be construed broadly. For example, "connected" may be in a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
Fig. 1 shows a schematic cross-sectional structure of a motor in the prior art, and fig. 2 shows a schematic cross-sectional structure of a motor according to an embodiment of the present application.
As shown in fig. 1, the motor in the prior art comprises a motor body consisting of a rotating shaft 1', an electronic iron core 2', a rotor iron core 3', a brake and an encoder, wherein the brake comprises a brake stator 4', an armature 5', a friction plate 6' and a hub 7' which are sequentially arranged, and the encoder comprises an encoder end cover 8', a code disc 9', an electronic body 10' and an encoder rear cover 11'. In the motor, the code wheel 9 'of the encoder is fixed on the rotating shaft 1' of the motor in a screw mode and the like, the size of the code wheel 9 'of the encoder is limited by the mounting mode, the code wheel 9' of the encoder cannot be subdivided more due to the limitation of a size structure, the encoder precision is low, and the motor structure shown in fig. 1 causes motor shaft vibration due to overlong axial length, so that the overall performance of the motor is reduced. To solve this technical problem, as shown in fig. 2, the embodiment of the application provides a motor, which includes a motor body 1, a brake 2 and an encoder 3 that are sequentially arranged, wherein the brake 2 includes a hub 201 sleeved on a rotating shaft 101 of the motor, the encoder 3 includes a code disc 301, an electronic body 302 and an encoder rear cover 303, the encoder rear cover 303 is located at one end of the motor, and the code disc 301 is fixed at one side of the hub 201 facing the encoder rear cover 303. In the motor structure provided by the embodiment of the application, the outer diameter of the code wheel 301 of the encoder 3 can be improved compared with that of the original structure because the code wheel 301 of the encoder 3 is combined with the hub 201 of the brake 2, and the subdivision accuracy of the inscription on the code wheel 301 can be relatively improved. Specific ways of bonding the code wheel 301 to the hub 201 include, but are not limited to, gluing the code wheel 301 to the hub 201 surface of the brake 2. Compared with the motor structure shown in fig. 1, in the structure shown in fig. 2, after the hub 201 is mounted on the rotating shaft 101 of the motor, the mounting space is not required to be provided for the code wheel 301, so that the axial dimension of the rotating shaft is reduced, the shaft vibration generated by overlong shaft or uneven shaft quality in the rotating process is reduced, the motor performance is improved, in addition, the code wheel 301 is attached to the hub 201, the position of the encoder 3 can be integrally moved forward and leaned against the brake, and the axial dimension of the motor is further shortened.
The electronic body 10' of the encoder shown in fig. 1 is installed in the space between the encoder rear cover 11' and the encoder end cover 8', and has poor heat dissipation effect, and the encoder is often abnormal due to rapid rise of heat generation during operation of the motor. In order to solve this problem, as shown in fig. 2, the electronic body 302 and the encoder back cover 303 are bonded to each other toward the hub 201. The electronic body 302 of the encoder 3 is combined with the rear cover 303 of the encoder, so that the heat dissipation area is increased, the heat dissipation capacity is improved, and the service life of the encoder 3 is prolonged. Correspondingly, the electronic body 302 of the encoder 3 is attached to the rear cover 303 of the encoder, the size and the area of the electronic body 302 of the encoder 3 can be designed to be larger, more performance circuits can be relatively made on the electronic body 302 of the encoder 3, the overall precision of the encoder 3 can be integrally improved by combining with the precision improvement of the code wheel 301, and the overall precision of the encoder 3 can be improved by improving the overall precision of a motor.
In some embodiments, as shown in fig. 2, a boss 202 coaxial with the hub 201 is formed on a side of the hub 201 facing the encoder back cover 303, and a code wheel 301 is fixed on a side of the boss 202 facing the encoder back cover 303. The encoder 3 further includes an encoder end cap 304 disposed between the hub 201 and the encoder rear cover 303, the encoder end cap 304 being provided with a through hole coaxial with the rotation shaft 101, the diameter of the through hole being larger than that of the code wheel 301. The through hole is designed so that the code wheel 301 can face the electronic body 302, and the encoder end cover 304 can play a certain role in blocking between the encoder 3 and the brake 2.
In some embodiments, one end of the shaft 101 is located between the hub 201 and the encoder end cap 304. The axial dimension of the rotary shaft 101 can be significantly shortened as compared with the motor structure of fig. 1.
In the motor structure shown in fig. 1, during the braking process of the brake, a certain amount of dust is generated by the friction action of the friction plate 6', and the dust drifts to the encoder code wheel 9' along with the shaft end, so that the code wheel 9' is polluted, and signal loss and other phenomena occur. Similarly, as shown in fig. 2, in the motor structure provided in the present application, the brake 2 also includes a brake stator 203, an armature 204 and a friction plate 205 that are sequentially disposed along an axial direction, and the friction plate 205 is disposed between the armature 204 and the hub 201. The rim of the hub 201 sleeved on the rotating shaft 101 is provided with a first annular groove 207, and the corresponding position on the shell is provided with a second annular groove 208. The two ring grooves form an airtight structure. Specifically, when the brake 2 releases the brake, the hub 201 rotates along with the rotating shaft 101, and the strokes of the first ring groove 207 and the second ring groove 208 are more than the strokes of the surrounding, so that a low-pressure vortex airflow can be generated during the same-speed rotation, a relative vacuum structure is formed between the two strokes, and dust generated by the friction plate 205 of the brake 2 is limited by the airtight structure, so that the dust generated by the brake stays in the vortex airflow, and the code disc 301 of the encoder 3 cannot be polluted. In some embodiments, it is preferable that the first ring groove 207 and the second ring groove 208 are provided with multiple groups, and as shown in fig. 2, the first ring groove 207 and the second ring groove 208 are provided with two groups, so as to enhance the blocking effect of the low-pressure vortex airflow.
In some embodiments, the encoder end cap 304 is provided with a felt 305 on the side facing the hub 201. The micro-dissipation dust can be electrostatically absorbed by the felt 305, further reducing the possibility of dust dissipation. Preferably, the felts 305 are annularly arranged along the rotating shaft 101, that is, the shape of the felts 305 is a circular ring taking the axis of the rotating shaft 101 as the center of the circle, the closed circular ring can further promote the effect of electrostatic adsorption, the electrostatic adsorption dead zone is prevented, more preferably, the felts 305 are provided in a plurality, the felts 305 are arranged in a plurality of circular ring shapes concentric with the center, a plurality of electrostatic adsorption defense lines can be formed, and as shown in fig. 2, the number of the felts 305 is two.
In this specification, some embodiments are described in a progressive manner, and each embodiment focuses on a difference from other embodiments, and identical and similar parts between the embodiments are enough to refer to each other.
The foregoing is merely exemplary of embodiments of the present invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The motor comprises a motor body (1), a brake (2) and an encoder (3) which are sequentially arranged, and is characterized in that the brake (2) comprises a hub (201) sleeved on a rotating shaft (101) of the motor, the encoder (3) comprises a code disc (301), an electronic body (302) and an encoder rear cover (303), the encoder rear cover (303) is positioned at one end of the motor, the code disc (301) is fixed at one side, facing the hub (201), of the encoder rear cover (303), and the electronic body (302) is connected with one side, facing the hub (201), of the encoder rear cover (303) in an attaching mode;
a boss (202) coaxial with the hub (201) is formed on one side of the hub (201) facing the rear cover (303) of the encoder, and the code wheel (301) is fixed on one side of the boss (202) facing the rear cover (303) of the encoder;
the brake (2) further comprises a brake shell (206), a first annular groove (207) is formed in the circumferential surface of the boss (202), and a second annular groove (208) opposite to the first annular groove (207) is formed in the brake shell (206).
2. The electric machine according to claim 1, characterized in that the encoder (3) further comprises an encoder end cap (304) arranged between the hub (201) and the encoder rear cover (303), the encoder end cap (304) being provided with a through hole coaxial with the rotation shaft (101), the diameter of the through hole being larger than the diameter of the code wheel (301).
3. The electric machine of claim 2, wherein one end of the shaft (101) is located between the hub (201) and the encoder end cap (304).
4. The electric machine according to claim 1, characterized in that the brake (2) further comprises a brake stator (203), an armature (204) and a friction plate (205) arranged in sequence in the axial direction, the friction plate (205) being arranged between the armature (204) and the hub (201).
5. The electric machine according to claim 1, characterized in that the first ring groove (207) and the second ring groove (208) are provided with groups, respectively.
6. The electric machine according to claim 2, characterized in that the side of the encoder end cap (304) facing the hub (201) is provided with a felt (305).
7. The electric machine according to claim 6, characterized in that the felt (305) is arranged annularly along the rotation axis (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910130590.2A CN109831072B (en) | 2019-02-21 | 2019-02-21 | Motor with a motor housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910130590.2A CN109831072B (en) | 2019-02-21 | 2019-02-21 | Motor with a motor housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109831072A CN109831072A (en) | 2019-05-31 |
| CN109831072B true CN109831072B (en) | 2024-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910130590.2A Active CN109831072B (en) | 2019-02-21 | 2019-02-21 | Motor with a motor housing |
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| Country | Link |
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| CN (1) | CN109831072B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110994888A (en) * | 2019-11-29 | 2020-04-10 | 珠海格力电器股份有限公司 | Rear end cover and split type brake motor |
| CN111030357A (en) * | 2019-12-04 | 2020-04-17 | 珠海格力电器股份有限公司 | Motor brake structure and servo motor |
| CN112615460A (en) * | 2020-12-24 | 2021-04-06 | 珠海格力电器股份有限公司 | Sealing structure and servo motor with same |
| CN116021546B (en) * | 2022-08-17 | 2024-05-31 | 深圳市大族机器人有限公司 | Joint module and robot |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627744A (en) * | 2016-12-09 | 2017-05-10 | 深圳大学 | Independent steering system of electric vehicle |
| CN107013615A (en) * | 2017-04-24 | 2017-08-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Electromagnetic brake and the motor with it |
| CN207534828U (en) * | 2017-12-07 | 2018-06-26 | 中国科学院沈阳自动化研究所 | Cooperation joint of robot with force sensing function |
| CN209562338U (en) * | 2019-02-21 | 2019-10-29 | 珠海格力电器股份有限公司 | Electric machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2093098B1 (en) * | 2008-02-21 | 2010-05-12 | Yamaha Hatsudoki Kabushiki Kaisha | Wheel driving apparatus and electric vehicle including the same |
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2019
- 2019-02-21 CN CN201910130590.2A patent/CN109831072B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106627744A (en) * | 2016-12-09 | 2017-05-10 | 深圳大学 | Independent steering system of electric vehicle |
| CN107013615A (en) * | 2017-04-24 | 2017-08-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Electromagnetic brake and the motor with it |
| CN207534828U (en) * | 2017-12-07 | 2018-06-26 | 中国科学院沈阳自动化研究所 | Cooperation joint of robot with force sensing function |
| CN209562338U (en) * | 2019-02-21 | 2019-10-29 | 珠海格力电器股份有限公司 | Electric machine |
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| CN109831072A (en) | 2019-05-31 |
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