CN215956165U - Small-sized outer rotor brushless permanent magnet direct current motor - Google Patents
Small-sized outer rotor brushless permanent magnet direct current motor Download PDFInfo
- Publication number
- CN215956165U CN215956165U CN202121749354.8U CN202121749354U CN215956165U CN 215956165 U CN215956165 U CN 215956165U CN 202121749354 U CN202121749354 U CN 202121749354U CN 215956165 U CN215956165 U CN 215956165U
- Authority
- CN
- China
- Prior art keywords
- bearing
- permanent magnet
- plate
- outer rotor
- direct current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Permanent Magnet Type Synchronous Machine (AREA)
- Motor Or Generator Frames (AREA)
- Brushless Motors (AREA)
Abstract
The utility model provides a small-sized outer rotor brushless permanent magnet direct current motor which comprises a shell, a support, a shaft branch, a stator assembly and a control panel, wherein the shell is provided with a check ring and a back plate, the check ring and the back plate are integrally formed, the back plate is provided with a shaft hole, the shaft branch is inserted into the shaft hole and is fixedly connected with the back plate, the support is provided with a fixed plate and a fixed cylinder, the fixed plate is fixedly connected with the fixed cylinder, the control panel is provided with a mounting hole, the stator assembly is provided with a jack, the fixed cylinder is sequentially inserted into the mounting hole and the jack, so that the control panel, the stator assembly and the support are movably connected, the motor is compact in structure and small in size, and as long as the shaft branch and the shell are assembled through a die at one time, the addition or reduction of dynamic balance is reduced, the vibration of the motor during operation is reduced, and the stability of the motor is improved, Reliability; the production process cost is reduced, the motor structure is reduced in unit temperature rise, and the service life of the motor structure is prolonged.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a small outer rotor brushless permanent magnet direct current motor.
Background
At present, a small-volume outer rotor brushless permanent magnet direct current motor comprises: the motor structure has the disadvantages that the process and material finished products are added by riveting the shell and the lining, and the outer rotor of the motor is loosened or separated from an unstable hidden channeling factor of the body, and the second is that: when the support material of similar motor adopts zinc alloy, the motor increases body weight simultaneously for the motor installation is heavy.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a small outer rotor brushless permanent magnet direct current motor.
The utility model is realized by the following technical scheme:
the utility model provides a small external rotor brushless permanent magnet direct current motor which comprises a shell, a support, a shaft branch, a stator assembly and a control panel, wherein the shell is provided with a retaining ring and a back plate, the retaining ring and the back plate are integrally formed, the back plate is provided with a shaft hole, the shaft branch is inserted into the shaft hole and is fixedly connected with the back plate, the support is provided with a fixing plate and a fixing cylinder, the fixing plate is fixedly connected with the fixing cylinder, the control panel is provided with an installation hole, the stator assembly is provided with an insertion hole, and the fixing cylinder is sequentially inserted into the installation hole and the insertion hole, so that the control panel, the stator assembly and the support are movably connected.
Furthermore, the fixed plate is provided with a positioning ring, a first positioning plate, a second positioning plate and a third positioning plate, the first positioning plate, the second positioning plate and the third positioning plate are arranged on the outer edge of the positioning ring at intervals of 120 degrees, and the first positioning plate, the second positioning plate and the third positioning plate are fixedly connected with the control panel.
Furthermore, the small outer rotor brushless permanent magnet direct current motor comprises a first bearing and a second bearing, the first bearing and the second bearing are sleeved on the shaft branch, and the first bearing and the second bearing are installed in the fixed cylinder.
Furthermore, the small outer rotor brushless permanent magnet direct current motor comprises a magnet, and the magnet is sleeved outside the stator assembly and contained in the check ring.
Furthermore, the small outer rotor brushless permanent magnet direct current motor comprises a wave-shaped meson, wherein the wave-shaped meson is sleeved on the shaft branch and is attached to the second bearing for installation.
Furthermore, the small outer rotor brushless permanent magnet direct current motor comprises a clamp spring meson, the clamp spring meson is attached to the second bearing and clamped with the shaft branch, and the second bearing is clamped between the waveform meson and the clamp spring meson.
The utility model has the beneficial effects that:
the small outer rotor brushless permanent magnet direct current motor provided by the utility model is stable and firm, has a compact internal structure, can be stably operated for a long time in an environment with the temperature of minus 40 ℃ to 100 ℃ and the humidity of 0 to 100 percent, and has high reliability. The motor outer rotor comprises a positioning support, a stator and a rotor assembly, wherein the design of a shell is tightly occluded with a knurling shaft branch, a small boss at the inner end of the shell is attached to a bearing inner ring, so that the gap between a bearing outer ring and the shell is not interfered, the shell of the motor outer rotor is integrated, the assembly tool cost is reduced, and the production and raw material cost is reduced; the shaft branches are only subjected to die pressing assembly with the shell, and the defects of coaxiality, verticality and the like caused by indirect assembly of third-party materials are avoided; the motor has compact structure, simple structure and small volume, and the mechanical stability and reliability are ensured. The outer shell of the outer rotor is integrally formed, a lining is not required to be additionally arranged to fix the outer shell, and high-precision coaxiality and various related parameters can be achieved as long as the shaft branches and the outer shell are assembled through a die at one time; the adding amount or the reducing amount of dynamic balance is reduced, and the vibration of the motor during operation is reduced, so that the stability and the reliability of the motor are improved; the production process cost is reduced, the motor components can be reduced, the motor structure is reduced in unit temperature rise, and the service life of the motor structure is prolonged. The two ends of the bracket are provided with ball bearings which are suitable for running in high and low environments to bear the bearing force of the running of the shaft branches, and the service life of the ball bearings is far longer than that of the oil-retaining bearings; through brand-new design, the motor can stably operate at high and low temperatures, the motor operates stably, the reliability of a good mechanical structure with an ultra-long service life compared with a similar motor is ensured, the motor can normally operate at high and low temperature, social resources are saved, and therefore the problem that the motor fails due to the fact that an outer rotor of the motor is loosened or separated from a body and hidden flees is solved. And the motor has compact structure and small volume.
Drawings
Fig. 1 is a perspective view of a small outer rotor brushless permanent magnet dc motor of the present invention;
FIG. 2 is an exploded view of the small outer rotor brushless permanent magnet DC motor according to the present invention;
fig. 3 is a schematic cross-sectional structure diagram of the small-sized outer rotor brushless permanent magnet dc motor of the present invention.
Detailed Description
In order to more clearly and completely describe the technical scheme of the utility model, the utility model is further described with reference to the accompanying drawings.
Referring to fig. 1 to 3, the utility model provides a small-sized outer rotor brushless permanent magnet dc motor, which includes a housing 1, a bracket 7, a shaft branch 2, a stator assembly 4 and a control board 6, wherein the housing 1 is provided with a retaining ring 11 and a back plate 12, the retaining ring 11 and the back plate 12 are integrally formed, the back plate 12 is provided with a shaft hole 13, the shaft branch 2 is inserted into the shaft hole 13 and fixedly connected with the back plate 12, the bracket 7 is provided with a fixing plate 14 and a fixing cylinder 15, the fixing plate 14 and the fixing cylinder 15 are fixedly connected, the control board 6 is provided with a mounting hole 21, the stator assembly 4 is provided with an insertion hole 20, and the fixing cylinder 15 is sequentially inserted into the mounting hole 21 and the insertion hole 20, so that the control board 6, the stator assembly 4 and the bracket 7 are movably connected.
In the embodiment, the shaft branch 2 and the shell 1 are assembled through a die at one time, and the shell 1 is integrally formed by stretching, so that high-precision coaxiality and various related parameters can be achieved; the adding amount or the reducing amount of dynamic balance is reduced, and the vibration of the motor during operation is reduced, so that the stability and the reliability of the motor are improved; the production process cost is reduced, the motor components can be reduced, the motor structure is reduced in unit temperature rise, the service life of the motor structure is prolonged, the control plate 6 and the stator assembly 4 are installed through the support 7, and the structure is more compact.
Further, the fixing plate 14 is provided with a positioning ring 16, a first positioning plate 17, a second positioning plate 18 and a third positioning plate 19, the first positioning plate 17, the second positioning plate 18 and the third positioning plate 19 are mounted on the outer edge of the positioning ring 16 at an interval of 120 degrees, and the first positioning plate 17, the second positioning plate 18 and the third positioning plate 19 are fixedly connected with the control plate 6.
In the present embodiment, the bracket 7 stably mounts the control board 6 on the housing 1 due to the structure of the first positioning plate 17, the second positioning plate 18, and the third positioning plate 19, so as to reinforce the mounting structure of the control board 6 and stabilize the overall structure.
Further, the small-sized outer rotor brushless permanent magnet direct current motor comprises a first bearing 5 and a second bearing 9, the first bearing 5 and the second bearing 9 are sleeved on the shaft branch 2, and the first bearing 5 and the second bearing 9 are installed in the fixed cylinder 15.
In the present embodiment, the first bearing 5 and the second bearing 9 are sleeved on the shaft branch 2, and the fixed cylinder 15 of the bracket 7 is sleeved outside the first bearing 5 and the second bearing 9 to form a movable connection.
Further, the small outer rotor brushless permanent magnet direct current motor comprises a magnet 3, and the magnet 3 is sleeved outside the stator assembly 4 and accommodated in the retainer ring 11.
In the present embodiment, the magnet 3 is mounted between the stator assembly 4 and the retaining ring 11 of the housing 1.
Further, the small outer rotor brushless permanent magnet direct current motor comprises a wave-shaped meson 8, wherein the wave-shaped meson 8 is sleeved on the shaft branch 2 and is attached to the second bearing 9; the small outer rotor brushless permanent magnet direct current motor comprises a clamp spring meson 10, the clamp spring meson 10 is attached to the second bearing 9 and clamped with the shaft branch 2, and the second bearing 9 is clamped between the waveform meson 8 and the clamp spring meson 10.
In the present embodiment, the circlip spacer 10 is engaged with the shaft member 2 to fix the second bearing 9 and the bracket 7, and the wave spacer 8 is used as a spacer of the second bearing 9.
Of course, the present invention may have other embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative effort, and all of them are within the protection scope of the present invention.
Claims (6)
1. The small-sized outer rotor brushless permanent magnet direct current motor is characterized by comprising a shell, a support, a shaft branch, a stator assembly and a control panel, wherein the shell is provided with a retaining ring and a back plate, the retaining ring and the back plate are integrally formed, the back plate is provided with a shaft hole, the shaft branch is inserted into the shaft hole and forms fixed connection with the back plate, the support is provided with a fixed plate and a fixed cylinder, the fixed plate and the fixed cylinder are fixedly connected, the control panel is provided with a mounting hole, the stator assembly is provided with a jack, and the fixed cylinder is sequentially inserted into the mounting hole and the jack, so that the control panel, the stator assembly and the support form movable connection.
2. The small external rotor brushless permanent magnet direct current motor according to claim 1, wherein the fixing plate is provided with a positioning ring, a first positioning plate, a second positioning plate and a third positioning plate, the first positioning plate, the second positioning plate and the third positioning plate are mounted on the outer edge of the positioning ring at an interval of 120 degrees, and the first positioning plate, the second positioning plate and the third positioning plate are fixedly connected with the control plate.
3. The small outer rotor brushless permanent magnet dc motor according to claim 1, comprising a first bearing and a second bearing, the first bearing and the second bearing being sleeved on the shaft branch, the first bearing and the second bearing being mounted in the stationary cylinder.
4. The small outer rotor brushless permanent magnet direct current motor according to claim 1, comprising magnets, wherein the magnets are sleeved outside the stator assembly and are accommodated in the retainer ring.
5. The small outer rotor brushless permanent magnet direct current motor according to claim 3, comprising a wave-shaped meson, wherein the wave-shaped meson is sleeved on the shaft branch and is mounted in close contact with the second bearing.
6. The small outer rotor brushless permanent magnet direct current motor according to claim 5, comprising a snap spring spacer, wherein the snap spring spacer is mounted in close contact with the second bearing and forms a snap fit with the shaft branch, and the wave spacer and the snap spring spacer clamp the second bearing in the middle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121749354.8U CN215956165U (en) | 2021-07-29 | 2021-07-29 | Small-sized outer rotor brushless permanent magnet direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121749354.8U CN215956165U (en) | 2021-07-29 | 2021-07-29 | Small-sized outer rotor brushless permanent magnet direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215956165U true CN215956165U (en) | 2022-03-04 |
Family
ID=80434879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121749354.8U Withdrawn - After Issue CN215956165U (en) | 2021-07-29 | 2021-07-29 | Small-sized outer rotor brushless permanent magnet direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215956165U (en) |
-
2021
- 2021-07-29 CN CN202121749354.8U patent/CN215956165U/en not_active Withdrawn - After Issue
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5497040A (en) | Outer rotor type brusless DC motor | |
| US20020141672A1 (en) | Thrust cap | |
| KR101004772B1 (en) | motor | |
| WO2006120934A1 (en) | Brush holder in electric motor | |
| JP7291913B2 (en) | Motors and electrical equipment equipped with them | |
| CN215956165U (en) | Small-sized outer rotor brushless permanent magnet direct current motor | |
| CN100397757C (en) | Motor | |
| CN110829696A (en) | Brushless motor | |
| KR101530116B1 (en) | Electric compressor | |
| JP4864341B2 (en) | Electric actuator | |
| CN108370192B (en) | Motor with a stator having a stator core | |
| JPH0287952A (en) | Small-sized motor | |
| CN1046062C (en) | Miniature motor | |
| JP2001016820A (en) | Attachment structure for rotational shaft of dynamo- electric machine | |
| CN213367507U (en) | Electric motor | |
| JP2003204662A (en) | Motor | |
| CN108183571B (en) | Magnetic suspension motor shell and magnetic suspension motor | |
| TW423196B (en) | Housing for electric motor | |
| JP2014036452A (en) | Flat type brush coreless motor | |
| CN220254261U (en) | Lifting table motor | |
| CN209896785U (en) | Magnetic ring and motor using same | |
| CN109347240B (en) | Micro motor end cover fixed connection structure | |
| CN215897437U (en) | Long-life low-loss air pump motor | |
| CN221531160U (en) | Outer rotor motor | |
| CN221886140U (en) | Novel rotor clamping ring axial positioning structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20220304 Effective date of abandoning: 20230601 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20220304 Effective date of abandoning: 20230601 |