CN210431159U - External rotor brushless motor with absolute origin signal - Google Patents
External rotor brushless motor with absolute origin signal Download PDFInfo
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- CN210431159U CN210431159U CN201921230764.4U CN201921230764U CN210431159U CN 210431159 U CN210431159 U CN 210431159U CN 201921230764 U CN201921230764 U CN 201921230764U CN 210431159 U CN210431159 U CN 210431159U
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- bearing
- stator
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- 238000002955 isolation Methods 0.000 claims abstract description 22
- 230000003068 static effect Effects 0.000 claims abstract description 13
- 230000005389 magnetism Effects 0.000 claims abstract description 12
- 230000006698 induction Effects 0.000 claims description 11
- 230000004323 axial length Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 2
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 229910000976 Electrical steel Inorganic materials 0.000 description 14
- 238000010586 diagram Methods 0.000 description 8
- 230000011218 segmentation Effects 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model discloses an external rotor brushless motor with absolute origin signal, which comprises a stator connecting shaft and a rotor shell; the outer wall of the stator connecting shaft is connected with a dynamic magnetic field group and a circuit board; a rotor isolation pipe is arranged on the inner wall of the rotor shell, and a static magnetic field group and a Hall sensing assembly are arranged on the inner wall of the rotor isolation pipe; the Hall sensing assembly comprises a first rotor magnetism isolating ring, a Hall reversing sensing magnetic ring, a second rotor magnetism isolating ring and a Hall absolute origin sensing magnetic ring which are sequentially arranged from top to bottom, and further comprises a Hall reversing sensor and a Hall absolute origin sensor. The utility model discloses having add the absolute initial point of hall response magnetic ring, hall absolute initial point sensor can learn the circumference position of the relative inner stator of external rotor through the 360 standard voltage square wave periodic signal of mechanical angle of response magnetic ring exportable of the absolute initial point of response hall after the circuit board receives this signal, so, can effectively improve the precision of control.
Description
Technical Field
The utility model belongs to the technical field of the brushless motor technique and specifically relates to an external rotor brushless motor with absolute original point signal is related to.
Background
The existing brushless motor with the outer rotor usually comprises the outer rotor and an inner stator, wherein the outer rotor comprises a rotor shell, a static magnetic field group, a Hall reversing induction magnetic ring and a Hall reversing sensor, the inner stator comprises a connecting shaft and a dynamic magnetic field group, and the outer rotor can rotate relative to the inner stator through mutual coupling between the static magnetic field group and the dynamic magnetic field group, but the structure has the following problems: 1. the Hall reversing sensor cannot know the relative position between the outer rotor and the inner stator, and therefore accurate control of the relative position between the outer rotor and the inner stator is provided. 2. Because the positioning can not be directly realized through the connecting shaft, a sleeve flange structure is designed on the outer surface of the bearing connected with the connecting shaft, and the structural complexity and the production cost of the motor are undoubtedly increased. 3. Because the existence of sleeve flange structure, the hall wire and the three-phase wire of motor can only be drawn forth from the safe space of sleeve flange structure, so, reduced the moment that unit volume produced, and then can reduce the high power density of motor. 4. Due to the existence of the connecting shaft and the sleeve flange structure, the load can have certain directivity when the outer rotor is installed, and the universality of product application can be affected. 5. The connecting shaft usually protrudes outward from the outer rotor and the sleeve flange structure also circumferentially protrudes outward from the outer rotor, so that larger axial and radial spaces are occupied, and the miniaturization design of the motor is influenced.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to overcome the above problems of the prior art, and provides an external rotor brushless motor with an absolute origin signal.
The purpose of the utility model is mainly realized through the following technical scheme:
the outer rotor brushless motor with the absolute origin signal comprises a stator connecting shaft and a rotor shell, wherein the rotor shell is connected to the periphery of the stator connecting shaft through a bearing, and the stator connecting shaft and the rotor shell are coaxially arranged;
the outer wall of the stator connecting shaft is connected with a dynamic magnetic field group and a circuit board;
a rotor isolation pipe is arranged on the inner wall of the rotor shell, and a static magnetic field group coupled with the dynamic magnetic field group and a Hall induction assembly positioned below the static magnetic field group are arranged on the inner wall of the rotor isolation pipe;
the Hall sensing assembly comprises a first rotor magnetism isolating ring, a Hall reversing sensing magnetic ring, a second rotor magnetism isolating ring and a Hall absolute origin sensing magnetic ring which are sequentially arranged from top to bottom, and further comprises a Hall reversing sensor for sensing the Hall reversing sensing magnetic ring and a Hall absolute origin sensor for sensing the Hall absolute origin sensing magnetic ring.
The utility model discloses in, dynamic magnetic field group establishes the silicon steel sheet of connection on the stator connecting axle including the cover, has seted up a plurality of stator slot on the silicon steel sheet, and a plurality of stator slot makes the silicon steel sheet be formed with a plurality of along silicon steel sheet hoop evenly distributed's silicon steel sheet support section, and the winding has the electromagnetic wire on the silicon steel sheet support section, and static magnetic field group includes that a plurality of connects the magnet at the rotor case internal face. Through mutual coupling between the magnetic field generated by the dynamic magnetic field group and the magnetic field generated by the static magnetic field group, the rotor shell can rotate relative to the stator connecting shaft. The rotor isolation tube can prevent the magnetic field from leaking and improve the effect of the magnetic field generating assembly. The dynamic magnetic field set and the static magnetic field set may be collectively considered a magnetic field generating assembly. Since the magnetic field generating assembly can be implemented by the prior art, it is not described herein in detail. The circuit board is electrically connected with an external controller through a Hall lead.
In the Hall sensing assembly, the first rotor magnetism isolating ring and the second rotor magnetism isolating ring can isolate the magnet, the Hall reversing sensing magnetic ring and the Hall absolute origin sensing magnetic ring, so as to avoid mutual influence between the first rotor magnetism isolating ring and the second rotor magnetism isolating ring, and the Hall reversing sensor can output corresponding signals to an external controller through the Hall reversing sensing magnetic ring so as to control the reversing and the rotating speed of the motor. The Hall absolute origin induction magnetic ring can adopt a radiation magnetizing mode to enable the magnetic ring to form a pair of north and south magnetic fields which are distributed radially, the Hall absolute origin sensor can output a standard voltage square wave periodic signal with a mechanical angle of 360 degrees through the induction Hall absolute origin induction magnetic ring, and the circumferential position of the outer rotor relative to the inner stator can be known after the external controller receives the signal, so that the control accuracy can be effectively improved.
Furthermore, the stator connecting shaft is arranged in a hollow manner, a connecting shaft wire passing hole penetrating through the inner wall and the outer wall of the stator connecting shaft is arranged on the stator connecting shaft, and a connecting boss is also arranged on the outer wall surface of the stator connecting shaft;
the outer wall of the stator connecting shaft is also provided with a wire passing bracket positioned above the connecting boss, and the wire passing bracket is provided with a bracket wire passing hole;
the connecting boss is connected with a Hall mounting plate below the wire passing support, a Hall wire passing hole is formed in the Hall mounting plate, and the Hall reversing sensor and the Hall absolute origin sensor are both mounted on the Hall mounting plate.
The utility model discloses in, cross the line support and can be used to support magnetic field and produce the subassembly. The stator connecting shaft is of a hollow structure and is used for connecting a positioning structure, and Hall wires (Hall mounting plates) and three-phase wires (circuit boards) can be led out from the stator connecting shaft through the connecting shaft wire passing holes by the arrangement of the bracket wire passing holes and the Hall wire passing holes. The utility model discloses replace traditional connecting axle with hollow stator connecting axle and realize the location of motor, it can shorten the axial and the radial space of motor greatly, simultaneously, hollow stator connecting axle not only is convenient for drawing forth of hall wire and three-phase conductor, also is convenient for maintain them. The inner wall surface of the stator connecting shaft can be provided with a connecting shaft shoulder to realize the connection with the positioning structure, so that an additional connecting auxiliary structure can be omitted. In addition, both ends of the stator connecting shaft can be connected with the positioning structure, direction limitation is not caused, and the universality of the motor application can be greatly improved.
Furthermore, the wire passing support is provided with a support connecting section which is in contact with the connecting boss, the inner side end of the support connecting section is provided with a support sleeve section which is sleeved on the stator connecting shaft in an extending mode, and the outer side end of the support connecting section is provided with a plurality of support partition sections which are arranged in an annular mode in an upward extending mode.
The utility model discloses in, the quantity of support segmentation should equal with the quantity of stator slot on the silicon steel sheet, and the bottom of support segmentation and stator slot notch is mutually suitable.
In order to ensure the synchronous rotation of the wire passing bracket and the stator connecting shaft, a bracket limiting groove arranged along the axial direction of the stator connecting shaft is further formed in the outer surface of the stator connecting shaft;
the inner surface of the support sleeve section extends inwards to form a support limiting protrusion matched with the support limiting groove in a placing mode.
Further, a support hollow groove is formed in the support connecting section. In this way, it is possible to facilitate the guidance of the hall wire or the three-phase wire.
Furthermore, an elastic wire passing sleeve is arranged at the wire passing hole of the bracket. The elastic wire passing sleeve can position the Hall lead and the three-phase lead by using the self elastic force and can protect the Hall lead and the three-phase lead from being abraded.
In order to realize the stable connection of the rotor shell and the load, further, a shell connecting boss is arranged on the outer surface of the rotor shell.
Furthermore, the outer surface of the stator connecting shaft is sequentially provided with a first bearing connecting section, a circuit board connecting section, a magnetic field generating assembly connecting section, a Hall sensing connecting section and a second bearing connecting section from top to bottom, a bearing limiting groove arranged along the circumferential direction of the stator connecting shaft is further arranged between the first bearing connecting section and the circuit board connecting section on the outer surface of the stator connecting shaft, and the outer diameter of the Hall sensing connecting section is larger than that of the second bearing connecting section and the magnetic field generating assembly connecting section;
the bearing is provided with two, and two bearings are connected respectively in first bearing linkage segment and second bearing linkage segment, and the spacing groove department of bearing is provided with the spacing jump ring of bearing that can prevent bearing axial displacement.
The utility model discloses in, first bearing linkage segment and second bearing linkage segment all are used for connecting the bearing. The magnetic field generating assembly connecting section is used for mounting silicon steel sheets. The Hall sensing connecting section can be provided with the connecting boss and the connecting shaft wire passing hole, and the wire passing support and the Hall mounting plate are both located at the Hall sensing connecting section. The outer diameter of the Hall induction connecting section is larger than that of the magnetic field generation assembly connecting section, and the position of the silicon steel sheet can be further fixed. The outer diameter of the Hall sensing connecting section is larger than that of the second bearing connecting section, so that the bearing can be prevented from moving axially; in a similar way, the bearing limiting clamp spring can prevent the bearing from axially moving.
Further, the stator connecting shaft and the rotor housing have the same axial length. Thus, the axial space of the motor is convenient to improve.
Furthermore, an annular limiting bulge is arranged on the inner wall surface of the rotor shell, and the top end of the annular limiting bulge is connected with the outer ring of the bearing positioned at the first bearing connecting section;
the rotor isolation tube is positioned in an area between the annular limiting bulge and the bearing connected to the second bearing connecting section, the inner wall surface of the rotor shell is provided with the annular limiting bulge, and the top end of the annular limiting bulge is connected with the outer ring of the bearing positioned at the first bearing connecting section;
the rotor isolation tube is located in the area between the annular limiting bulge and the bearing connected to the second bearing connecting section.
In this embodiment, the annular limiting protrusion may position an axial position of the rotor isolation tube.
Further, a threaded groove is formed in the joint of the rotor shell and the rotor isolation pipe.
The arrangement of the thread groove can increase the contact area of glue and improve the connection stability between the rotor shell and the rotor isolation tube.
The utility model discloses following beneficial effect has:
1. the utility model discloses having add the absolute initial point of hall response magnetic ring, hall absolute initial point sensor can learn the circumference position of the relative inner stator of external rotor through the 360 standard voltage square wave periodic signal of mechanical angle of response magnetic ring exportable of the absolute initial point of response hall after the circuit board receives this signal, so, can effectively improve the precision of control.
2. The utility model discloses replace traditional connecting axle with hollow stator connecting axle and realize the location of motor, it can shorten the axial and the radial space of motor greatly, simultaneously, hollow stator connecting axle not only is convenient for drawing forth of hall wire and three-phase conductor, also is convenient for maintain them.
3. The inner wall surface of the stator connecting shaft can be provided with a connecting shaft shoulder to realize the connection with the positioning structure, so that an additional connecting auxiliary structure can be omitted. In addition, both ends of the stator connecting shaft can be connected with the positioning structure, direction limitation is not caused, and the universality of the motor application can be greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings required for describing the embodiments of the present invention will be briefly described below. It is obvious that the drawings in the following description are only some of the embodiments described in the present application, and that other drawings can be derived from the following drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an embodiment of an external rotor brushless motor with an absolute origin signal according to the present invention;
fig. 2 is a cross-sectional view of an embodiment of an external rotor brushless motor with absolute origin signal according to the present invention;
fig. 3 is a schematic structural diagram of an embodiment of a magnetic field generating assembly and a hall sensing assembly in an external rotor brushless motor with an absolute origin signal according to the present invention;
fig. 4 is a schematic structural diagram of an embodiment of a magnetic field generating assembly in an external rotor brushless motor with an absolute origin signal according to the present invention;
fig. 5 is a schematic structural diagram of an embodiment of a wire passing bracket in an outer rotor brushless motor with an absolute origin signal according to the present invention;
fig. 6 is a schematic structural diagram of an embodiment of a stator connecting shaft in an external rotor brushless motor with an absolute origin signal according to the present invention;
fig. 7 is a schematic structural diagram of an embodiment of a stator connecting shaft in an external rotor brushless motor with an absolute origin signal according to the present invention;
fig. 8 is a schematic structural diagram of an embodiment of a rotor housing in an outer rotor brushless motor with an absolute origin signal according to the present invention;
fig. 9 is a signal diagram of hall absolute origin sensor output in the external rotor brushless motor with absolute origin signal according to the present invention.
Wherein, the part names corresponding to the reference numbers are as follows: 1. stator connecting shaft, 2, rotor shell, 3, bearing, 4, connecting shaft wire hole, 5, connecting boss, 6, wire support, 7, support wire hole, 8, Hall mounting plate, 9, Hall wire hole, 10, support sleeve section, 11, support dividing section, 12, support limiting groove, 13, support limiting protrusion, 14, support hollow groove, 15, circuit board, 16, elastic wire sleeve, 17, annular limiting protrusion, 18, rotor isolation tube, 19, shell connecting boss, 20, first bearing connecting section, 21, circuit board connecting section, 22, magnetic field generating assembly connecting section, 23, Hall induction connecting section, 24, second bearing connecting section, 25, bearing limiting groove, 26, bearing limiting snap spring, 27, thread groove, 28, magnet, 29, silicon steel sheet, 30, silicon steel sheet support section, 31, stator groove, 32, electromagnetic wire, 33. the magnetic field isolation device comprises a first rotor magnetic isolation ring, a first Hall commutation induction magnetic ring, a second rotor magnetic isolation ring, a second Hall absolute origin induction magnetic ring, a third phase lead, a fourth phase lead, a.
Detailed Description
In order to make those skilled in the art better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be apparent that the embodiments described below are only some, but not all embodiments of the present invention. Based on the embodiments recorded in the present invention, all other embodiments obtained by those skilled in the art without creative efforts are all within the scope of the present invention.
Example 1
As shown in fig. 1 to 9, the external rotor brushless motor with absolute origin signal includes a stator connecting shaft 1 and a rotor housing 2, the rotor housing 2 is connected to the periphery of the stator connecting shaft 1 through a bearing 3, and the stator connecting shaft 1 and the rotor housing 2 are coaxially arranged;
the outer wall of the stator connecting shaft 1 is connected with a dynamic magnetic field group and a circuit board 15;
a rotor isolation tube 18 is arranged on the inner wall of the rotor shell 2, and a static magnetic field group coupled with the dynamic magnetic field group and a Hall induction assembly positioned below the static magnetic field group are arranged on the inner wall of the rotor isolation tube 18;
the hall sensing assembly comprises a first rotor magnetism isolating ring 33, a hall reversing sensing magnetic ring 34, a second rotor magnetism isolating ring 35 and a hall absolute origin sensing magnetic ring 36 which are sequentially arranged from top to bottom, and further comprises a hall reversing sensor 40 capable of sensing the hall reversing sensing magnetic ring 34 and a hall absolute origin sensor 41 capable of sensing the hall absolute origin sensing magnetic ring 36.
In this embodiment, a 12-slot dynamic magnetic field set and a 14-pole static magnetic field set may be used. US1881 may be used for both the hall commutation sensor 40 and the hall absolute origin sensor 41.
Example 2
This example is further defined on the basis of example 1 as follows: the stator connecting shaft 1 is arranged in a hollow manner, a connecting shaft wire passing hole 4 penetrating through the inner wall and the outer wall of the stator connecting shaft 1 is formed in the stator connecting shaft 1, and a connecting boss 5 is further arranged on the outer wall surface of the stator connecting shaft 1;
the outer wall of the stator connecting shaft 1 is also provided with a wire passing bracket 6 positioned above the connecting boss 5, and the wire passing bracket 6 is provided with a bracket wire passing hole 7;
connect and be connected with the hall mounting panel 8 that is located the line support 6 below on the boss 5, be provided with hall wire hole 9 on the hall mounting panel 8, hall switching-over sensor 40 with hall absolute origin sensor 41 all installs on hall mounting panel 8.
In this embodiment, since the hall commutation sensing magnetic ring 34 is located above the hall absolute origin sensing magnetic ring 36, the hall commutation sensor 40 can be installed at the top end of the hall mounting plate 8, and the hall absolute origin sensor 41 can be installed at the bottom end of the hall mounting plate 8.
In order to realize the connection between the stator connecting shaft 1 and the positioning structure, a connecting shaft shoulder can be arranged on the inner surface of the stator connecting shaft 1, and a connecting thread can be arranged on the inner surface of the stator connecting shaft 1 so as to facilitate the positioning connection of the motor. The circuit board 15 can be connected above the 12-slot dynamic magnetic field set. The wire passing bracket 6 is sleeved on the outer wall surface of the stator connecting shaft 1, the wire passing bracket 6 can be connected to the upper end of the connecting boss 5, and the wire passing bracket 6 can also be directly supported by the connecting boss 5.
Preferably, an elastic wire passing sleeve 16 is arranged at the bracket wire passing hole 7. The elastic thread bushing 16 can be made of silica gel, rubber and the like.
The outer surface of the rotor housing 2 is provided with a housing connection boss 19.
Preferably, the stator connecting shaft 1 and the rotor housing 2 have the same axial length.
In this embodiment, the bearing 3 may be a ball bearing.
Example 3
This example is further defined on the basis of example 2 as follows: the wire passing support 6 is provided with a support connecting section 42 contacted with the connecting boss 5, the inner side end of the support connecting section 42 is extended and provided with a support sleeve setting section 10 sleeved on the stator connecting shaft 1, and the outer side end of the support connecting section 42 is upwards extended and provided with a plurality of support segmentation sections 11 which are annularly arranged.
In this embodiment, the bracket connection section 9 may be connected to the top end of the connection boss 5.
Preferably, a bracket limiting groove 12 arranged along the axial direction of the stator connecting shaft 1 is formed in the outer surface of the stator connecting shaft;
the inner surface of the support sleeve section 10 extends inwards to form a support limiting protrusion 13 which is matched with the support limiting groove 12 in a placing mode.
In order to improve the connection stability of the silicon steel sheet and the stator connecting shaft 1 in the magnetic field generating assembly, silicon steel sheet limiting protrusions 39 which can be matched with the support limiting grooves 12 in a placing mode can be arranged on the inner surface of the silicon steel sheet.
Preferably, the bracket connection section 42 is provided with a bracket hollow-out groove 14.
Example 4
The present embodiment is further defined by the following embodiments on the basis of any one of embodiments 2 to 3: the outer surface of the stator connecting shaft 1 is sequentially provided with a first bearing connecting section 20, a circuit board connecting section 21, a magnetic field generating assembly connecting section 22, a Hall sensing connecting section 23 and a second bearing connecting section 24 from top to bottom, a bearing limiting groove 25 which is annularly arranged along the stator connecting shaft 1 is further arranged between the first bearing connecting section 20 and the circuit board connecting section 21 on the outer surface of the stator connecting shaft 1, and the outer diameter of the Hall sensing connecting section 23 is larger than that of the second bearing connecting section 24 and the magnetic field generating assembly connecting section 22;
the bearing 3 is provided with two, and two bearings 3 are connected respectively at first bearing linkage segment 20 and second bearing linkage segment 24, and the spacing recess 25 department of bearing is provided with the spacing jump ring 26 of bearing that can prevent bearing 3 axial displacement.
In this embodiment, the first bearing interface 20 and the second bearing interface 24 may be equally large.
Preferably, the inner wall surface of the rotor housing 2 is provided with an annular limiting bulge 17, and the top end of the annular limiting bulge 17 is connected with the outer ring of the bearing 3 located at the first bearing connecting section 20;
the rotor isolation tube 18 is located in the region between the annular stop protrusion 17 and the bearing 3 connected to the second bearing connection section 24.
Preferably, a threaded groove 27 is provided at the connection of the rotor housing 2 and the rotor isolation tube 18.
In this embodiment, the thread groove may be provided on the inner surface of the rotor housing 2, or may be provided on the outer surface of the rotor isolation tube 18.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person say, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should be contained the utility model discloses a within the scope of protection.
Claims (10)
1. External rotor brushless motor with absolute origin signal, its characterized in that: the stator comprises a stator connecting shaft (1) and a rotor shell (2), wherein the rotor shell (2) is connected to the periphery of the stator connecting shaft (1) through a bearing (3), and the stator connecting shaft (1) and the rotor shell (2) are coaxially arranged;
the outer wall of the stator connecting shaft (1) is connected with a dynamic magnetic field group and a circuit board (15);
a rotor isolation pipe (18) is arranged on the inner wall of the rotor shell (2), and a static magnetic field group coupled with the dynamic magnetic field group and a Hall induction assembly positioned below the static magnetic field group are arranged on the inner wall of the rotor isolation pipe (18);
the Hall sensing assembly comprises a first rotor magnetism isolating ring (33), a Hall reversing sensing magnetic ring (34), a second rotor magnetism isolating ring (35) and a Hall absolute origin sensing magnetic ring (36) which are sequentially arranged from top to bottom, and further comprises a Hall reversing sensor (40) for sensing the Hall reversing sensing magnetic ring (34) and a Hall absolute origin sensor (41) for sensing the Hall absolute origin sensing magnetic ring (36).
2. The external rotor brushless motor with absolute origin signal of claim 1, wherein:
the stator connecting shaft (1) is arranged in a hollow manner, and a connecting shaft wire passing hole (4) penetrating through the inner wall and the outer wall of the stator connecting shaft (1) is formed in the stator connecting shaft;
a connecting boss (5) is arranged on the outer wall surface of the stator connecting shaft (1);
the outer wall of the stator connecting shaft (1) is also provided with a wire passing bracket (6) positioned above the connecting boss (5), and the wire passing bracket (6) is provided with a bracket wire passing hole (7);
connect and be connected with hall mounting panel (8) that are located line support (6) below on boss (5), be provided with hall on hall mounting panel (8) and cross line hole (9), hall switching-over sensor (40) with hall absolute original point sensor (41) are installed on hall mounting panel (8).
3. The external rotor brushless motor with absolute origin signal of claim 2, wherein: the wire passing support (6) is provided with a support connecting section (42) in contact with the connecting boss (5), the inner side end of the support connecting section (42) extends to be provided with a support sleeve setting section (10) sleeved on the stator connecting shaft (1), and the outer side end of the support connecting section (42) upwards extends to be provided with a plurality of support partition sections (11) which are annularly arranged.
4. The external rotor brushless motor with absolute origin signal of claim 3, wherein: the outer surface of the stator connecting shaft (1) is provided with a bracket limiting groove (12) which is arranged along the axial direction of the stator connecting shaft;
the inner surface of the support sleeve section (10) extends inwards to form a support limiting protrusion (13) matched with the support limiting groove (12) in an embedded mode.
5. The external rotor brushless motor with absolute origin signal of claim 3, wherein: the bracket connecting section (42) is provided with a bracket hollow groove (14).
6. The external rotor brushless motor with absolute origin signal of claim 2, wherein: an elastic thread passing sleeve (16) is arranged at the thread passing hole (7) of the bracket.
7. The external rotor brushless motor with absolute origin signal of claim 1, wherein: and a shell connecting boss (19) is arranged on the outer surface of the rotor shell (2).
8. The external rotor brushless motor with an absolute origin signal according to any one of claims 1 to 7, wherein: the outer surface of the stator connecting shaft (1) is sequentially provided with a first bearing connecting section (20), a circuit board connecting section (21), a magnetic field generating assembly connecting section (22), a Hall sensing connecting section (23) and a second bearing connecting section (24) from top to bottom, a bearing limiting groove (25) which is annularly arranged along the stator connecting shaft (1) is further arranged between the first bearing connecting section (20) and the circuit board connecting section (21) on the outer surface of the stator connecting shaft (1), and the outer diameter of the Hall sensing connecting section (23) is larger than that of the second bearing connecting section (24) and the magnetic field generating assembly connecting section (22);
the bearing (3) are provided with two, the two bearings (3) are respectively connected to the first bearing connecting section (20) and the second bearing connecting section (24), and the bearing limiting groove (25) is provided with a bearing limiting clamp spring (26) capable of preventing the bearing (3) from axially moving.
9. The external rotor brushless motor with absolute origin signal of claim 8, wherein: the axial length of the stator connecting shaft (1) is equal to that of the rotor shell (2).
10. The external rotor brushless motor with absolute origin signal of claim 8, wherein: an annular limiting bulge (17) is arranged on the inner wall surface of the rotor shell (2), and the top end of the annular limiting bulge (17) is connected with the outer ring of the bearing (3) positioned at the first bearing connecting section (20); the rotor isolation tube (18) is located in the region between the annular limiting protrusion (17) and the bearing (3) connected to the second bearing connection section (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921230764.4U CN210431159U (en) | 2019-07-31 | 2019-07-31 | External rotor brushless motor with absolute origin signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921230764.4U CN210431159U (en) | 2019-07-31 | 2019-07-31 | External rotor brushless motor with absolute origin signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210431159U true CN210431159U (en) | 2020-04-28 |
Family
ID=70383964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921230764.4U Withdrawn - After Issue CN210431159U (en) | 2019-07-31 | 2019-07-31 | External rotor brushless motor with absolute origin signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210431159U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311514A (en) * | 2019-07-31 | 2019-10-08 | 重庆灵龙实业发展有限公司 | Outer rotor brushless motor with absolute origin signal |
| CN113663212A (en) * | 2021-09-27 | 2021-11-19 | 成都凯磁科技有限公司 | Heart auxiliary device of two-degree-of-freedom electromagnetic control magnetic suspension centrifugal pump |
-
2019
- 2019-07-31 CN CN201921230764.4U patent/CN210431159U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110311514A (en) * | 2019-07-31 | 2019-10-08 | 重庆灵龙实业发展有限公司 | Outer rotor brushless motor with absolute origin signal |
| CN110311514B (en) * | 2019-07-31 | 2024-03-22 | 重庆灵龙实业发展有限公司 | External rotor brushless motor with absolute origin signal |
| CN113663212A (en) * | 2021-09-27 | 2021-11-19 | 成都凯磁科技有限公司 | Heart auxiliary device of two-degree-of-freedom electromagnetic control magnetic suspension centrifugal pump |
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