CN108233660B - BLDC motor - Google Patents
BLDC motor Download PDFInfo
- Publication number
- CN108233660B CN108233660B CN201810189091.6A CN201810189091A CN108233660B CN 108233660 B CN108233660 B CN 108233660B CN 201810189091 A CN201810189091 A CN 201810189091A CN 108233660 B CN108233660 B CN 108233660B
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- China
- Prior art keywords
- hall
- groove
- fixing frame
- circuit board
- rear end
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Links
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 230000006698 induction Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/06—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices
- H02K29/08—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with position sensing devices using magnetic effect devices, e.g. Hall-plates, magneto-resistors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Brushless Motors (AREA)
Abstract
The invention discloses a BLDC motor, which comprises a motor body and a controller, wherein the front end of the motor body extends out of a rotating shaft, the tail end of the motor body is connected with the controller, the motor body comprises a shell, a front end cover, a rear end cover, a stator assembly, a rotor assembly and a rotating shaft, the front end cover and the rear end cover are respectively arranged at two ends of the shell, the stator assembly and the rotor assembly are arranged in a cavity of the shell, a magnetic ring is arranged on the rotor assembly, the rear end cover comprises a bottom plate, a bearing seat protruding from the center of the bottom plate to the direction of the controller, and an annular convex edge arched at the outer edge of the bottom plate, an annular groove is formed between the annular convex edge and the bearing seat, a through hole is arranged in the groove, a Hall fixing frame is arranged in the groove, a Hall circuit board is arranged on the Hall fixing frame, and a Hall element on the Hall circuit board extends into the motor body from the through hole and is positioned beside the magnetic ring. The Hall circuit board is convenient to install, the rear end cover and the Hall fixing frame are not easy to deform, and the Hall element is prevented from generating angle deviation.
Description
Technical field:
The present invention relates to a BLDC motor.
The background technology is as follows:
The current BLDC motor comprises a motor body and a controller, wherein the front end of the motor body extends out of a rotating shaft, the tail end of the motor body is connected with the controller, the motor body comprises a shell, a front end cover, a rear end cover, a stator assembly, a rotor assembly and the rotating shaft, the front end cover and the rear end cover are respectively arranged at two ends of the shell, the stator assembly and the rotor assembly are arranged in a cavity of the shell, a magnetic ring is arranged on the rotor assembly, a Hall circuit board is arranged on the stator end part of the stator assembly in an insulating way, and a Hall element on the Hall circuit board senses the magnetic flux of the magnetic ring. However, the insulation of the end part is easy to deform due to the plastic material, so that the angle deviation generated by the Hall element of the motor is large, the motor performance is influenced, and the Hall circuit board is inconvenient to replace.
The invention comprises the following steps:
the invention aims to provide a motor Hall circuit board mounting structure and a motor using the same, which are used for solving the problems that the Hall circuit board is inconvenient to mount and the Hall element mounting angle is easy to deviate in the prior art.
The aim of the invention is achieved by the following technical scheme.
The invention aims to provide a BLDC motor, which comprises a motor body and a controller, wherein the front end of the motor body extends out of a rotating shaft, the tail end of the motor body is connected with the controller, the motor body comprises a shell, a front end cover, a rear end cover, a stator assembly, a rotor assembly and the rotating shaft, the front end cover and the rear end cover are respectively arranged at two ends of the shell, the stator assembly and the rotor assembly are arranged in a cavity of the shell, and a magnetic ring is arranged on the rotor assembly, and the BLDC motor is characterized in that: the rear end cover comprises a bottom plate, a bearing seat protruding from the center of the bottom plate to the direction of the controller, and an annular convex edge arched on the outer edge of the bottom plate, wherein an annular groove is formed between the annular convex edge and the bearing seat, a through hole is formed in the groove, a Hall fixing frame is installed in the groove, a Hall circuit board is installed on the Hall fixing frame, and a Hall element on the Hall circuit board extends into the motor body from the through hole and is located beside the magnetic ring.
The rear end cover is provided with a plurality of screw holes in the groove, a plurality of arc long holes are formed in the Hall fixing frame corresponding to the screw holes, a screw penetrates through the arc long holes to be installed in the screw holes, and the Hall fixing frame is fixed in the groove through the screw.
The through holes are arc through holes located on the periphery of the bearing seat, the bearing seat is connected with the bottom plate through three connecting blocks, reinforcing ribs are formed by extending upwards from two sides of each connecting block, the reinforcing ribs are connected with the side walls of the bearing seat, and the screw holes are located beside the connecting blocks.
Above-mentioned hall mount concave is equipped with fan-shaped mounting groove, the mounting groove bottom downward bulge has three sleeve, the sleeve passes the through-hole extremely by the magnetic ring, hall circuit board installs in the mounting groove, hall element on the hall circuit board inserts in the sleeve.
The Hall fixing frame is provided with the arc long holes on two sides of the mounting groove respectively.
The rear end cover is further provided with a wire outlet hole in the groove, the Hall fixing frame and the wire outlet hole are correspondingly provided with a clearance groove, and a motor lead wire penetrates through the wire outlet hole and the clearance groove from the motor body to extend into the controller.
Above-mentioned hall mount in the tank bottom of mounting groove upwards protrudes has the projection, on the hall circuit board with the projection corresponds and is equipped with a plurality of mounting holes, the hall circuit board passes through the mounting hole with the cooperation of projection is installed in the mounting groove.
The bottom of the mounting groove is also provided with a positioning lug in a protruding mode, the groove is provided with a sector positioning groove in a concave mode, and the positioning lug is movably mounted in the sector positioning groove.
Compared with the prior art, the invention has the following effects:
1) The Hall circuit board is arranged on the rear end cover through the Hall fixing frame, so that the installation is convenient, the rear end cover and the Hall fixing frame are not easy to deform, the Hall element is prevented from generating angle deviation, the induction effect of the Hall circuit board is more stable, and the motor performance is improved; the Hall element extends into the motor body and is positioned beside the magnetic ring, so that the induction effect is better;
2) The rear end cover is provided with a plurality of screw holes in the groove, the Hall fixing frame is correspondingly provided with a plurality of arc long holes, a screw penetrates through the arc long holes and is arranged in the screw holes, the Hall fixing frame is fixed in the groove through the screw, the Hall fixing frame is convenient to install, the angle between the Hall fixing frame and the rear end cover is adjustable due to the arc long holes, the angle between the Hall element and the magnetic ring is adjustable, and the motor performance is improved;
3) The through holes are arc-shaped through holes positioned at the periphery of the bearing seat, the bearing seat is connected with the bottom plate through three connecting blocks, the two sides of each connecting block extend upwards to form reinforcing ribs, the reinforcing ribs are connected with the side walls of the bearing seat, and the reinforcing ribs ensure the strength of the rear end cover;
4) The Hall circuit board is arranged in the mounting groove, the Hall element of the Hall circuit board is inserted into the sleeve, and the sleeve can protect the Hall element and accurately control the position of the Hall element;
5) The periphery of the fan-shaped through hole of the groove is also provided with a wire outlet hole, the Hall fixing frame and the wire outlet hole are correspondingly provided with a clearance groove, and the wire outlet hole and the clearance groove are convenient for leading out a motor lead;
6) The Hall circuit board is installed in the mounting groove through the cooperation of mounting hole and projection, and the installation of hall circuit board is convenient.
Description of the drawings:
fig. 1 is a schematic structural view of a BLDC motor according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 2;
fig. 4 is an exploded view of a BLDC motor provided in an embodiment of the present invention;
FIG. 5 is an enlarged view at C of FIG. 4;
Fig. 6 is an enlarged view at D of fig. 4.
The specific embodiment is as follows:
The invention is described in further detail below by means of specific embodiments in connection with the accompanying drawings.
As shown in fig. 1 to 6, the present embodiment provides a BLDC motor, including a motor body 10 and a controller 9, wherein a front end of the motor body 10 extends out of a rotating shaft 8, a tail end of the motor body 10 is connected with the controller 9, the motor body 10 includes a housing 4, a front end cover 5, a rear end cover 1, a stator assembly 6, a rotor assembly 7 and the rotating shaft 8, the front end cover 5 and the rear end cover 1 are respectively installed at two ends of the housing 4, the stator assembly 6 and the rotor assembly 7 are installed in a cavity of the housing 4, and a magnetic ring 32 is installed on the rotor assembly 7, which is characterized in that: the rear end cover 1 comprises a bottom plate 11, a bearing seat 12 protruding from the center of the bottom plate 11 to the direction of the controller 9, and an annular convex edge 13 arched at the outer edge of the bottom plate 11, an annular groove 14 is formed between the annular convex edge 13 and the bearing seat 12, a through hole 15 is arranged in the groove 14, a Hall fixing frame 2 is arranged in the groove 14, a Hall circuit board 31 is arranged on the Hall fixing frame 2, and a Hall element 311 on the Hall circuit board 31 extends into the motor body 10 from the through hole 15 and is positioned beside the magnetic ring 32.
In the BLDC motor of this embodiment, the hall circuit board 31 is mounted on the rear end cap 1 through the hall fixing frame 2, so that the installation is convenient, the rear end cap 1 and the hall fixing frame 2 are not easy to deform, the angle deviation of the hall element 311 is avoided, the induction effect of the hall circuit board 31 is more stable, and the motor performance is improved; the hall element 311 extends into the motor body 1 and is located beside the magnetic ring 32, so that the induction effect is better.
The rear end cover 1 is provided with a plurality of screw holes 16 in the groove 14, the hall fixing frame 2 is provided with a plurality of arc long holes 23 corresponding to the screw holes 16, a screw 27 is installed in the screw holes 16 through the arc long holes 23, and the hall fixing frame 2 is fixed in the groove 14 through the screw 27. The arc long hole 23 enables the angle between the Hall fixing frame 2 and the rear end cover 1 to be adjustable, enables the angle between the Hall element 311 and the magnetic ring 32 to be adjustable, and improves the motor performance.
The through holes 15 are arc-shaped through holes located at the periphery of the bearing seat 12, the bearing seat 12 is connected with the bottom plate 11 through three connecting blocks 17, two sides of each connecting block 17 extend upwards to form reinforcing ribs 171, the reinforcing ribs 171 are connected with the side walls of the bearing seat 12, and the screw holes 16 are located beside the corresponding connecting blocks 17. A bearing 75 is installed in the bearing seat 12, and the rotating shaft 8 is supported in the casing 4 through the bearing 75. The reinforcing ribs 171 ensure the strength of the rear cover 1.
The hall fixing frame 2 is concavely provided with a fan-shaped mounting groove 21, the bottom of the mounting groove 21 is downwardly protruded with three sleeves 22, the sleeves 22 penetrate through the through holes 15 to the side of the magnetic rings 32, the hall circuit board 31 is mounted in the mounting groove 21, and the hall elements 311 on the hall circuit board 31 are inserted into the sleeves 22. The sleeve 22 can protect the hall element 311 and accurately control the position of the hall element 311.
The hall fixing frame 2 is provided with an arc slot 23 on each side of the mounting slot 21.
The rear end cover 1 is further provided with a wire outlet hole 18 in the groove 14, the hall fixture 2 is provided with a clearance groove 24 corresponding to the wire outlet hole 18, and a motor lead (not shown) extends into the controller 9 from the motor body 10 through the wire outlet hole 18 and the clearance groove 24. The wire outlet hole 18 and the clearance groove 24 facilitate the lead out of the motor.
The hall fixing frame 2 is provided with a protruding column 25 protruding upwards from the bottom of the mounting groove 21, the hall circuit board 31 is provided with a plurality of mounting holes 312 corresponding to the protruding column 25, and the hall circuit board 31 is mounted in the mounting groove 21 through the cooperation of the mounting holes 312 and the protruding column 25. The hall wiring board 31 is convenient to install.
The bottom of the installation groove 21 is further provided with a positioning projection 26 protruding downwards, the groove 14 is provided with a fan-shaped positioning groove 141 in a concave manner, and the positioning projection 26 is movably installed in the fan-shaped positioning groove 141.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited thereto, and any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principles of the present invention are included in the scope of the present invention.
Claims (7)
1. The utility model provides a BLDC motor, includes motor body (10) and controller (9), pivot (8) are stretched out to motor body's (10) front end, and motor body's (10) tail end is connected with controller (9), wherein, motor body (10) include casing (4), front end housing (5), rear end housing (1), stator module (6), rotor subassembly (7) and pivot (8), front end housing (5) and rear end housing (1) are installed respectively the both ends of casing (4), stator module (6) with rotor subassembly (7) are installed in the cavity of casing (4), install magnetic ring (32) on rotor module (7), its characterized in that: the rear end cover (1) comprises a bottom plate (11), a bearing seat (12) protruding from the center of the bottom plate (11) to the direction of the controller (9), and an annular convex edge (13) arched at the outer edge of the bottom plate (11), an annular groove (14) is formed between the annular convex edge (13) and the bearing seat (12), a through hole (15) is formed in the groove (14), a Hall fixing frame (2) is arranged in the groove (14), a Hall circuit board (31) is arranged on the Hall fixing frame (2), and a Hall element (311) on the Hall circuit board (31) stretches into the motor body (10) from the through hole (15) and is positioned beside the magnetic ring (32);
The Hall fixing frame (2) is concavely provided with a fan-shaped mounting groove (21), three sleeves (22) are downwards protruded from the bottom of the mounting groove (21), the sleeves (22) penetrate through the through holes (15) to the side of the magnetic rings (32), the Hall circuit board (31) is mounted in the mounting groove (21), and the Hall element (311) on the Hall circuit board (31) is inserted into the sleeves (22).
2. A BLDC motor as in claim 1, wherein: the rear end cover (1) is provided with a plurality of screw holes (16) in the groove (14), a plurality of arc long holes (23) are formed in the Hall fixing frame (2) corresponding to the screw holes (16), a screw (27) penetrates through the arc long holes (23) to be installed in the screw holes (16), and the Hall fixing frame (2) is fixed in the groove (14) through the screw (27).
3. A BLDC motor as claimed in claim 2, wherein: the through holes (15) are arc-shaped through holes located on the periphery of the bearing seat (12), the bearing seat (12) is connected with the bottom plate (11) through three connecting blocks (17), reinforcing ribs (171) are formed by extending upwards from two sides of each connecting block (17), the reinforcing ribs (171) are connected with the side walls of the bearing seat (12), and the screw holes (16) are located beside the corresponding connecting blocks (17).
4. A BLDC motor as claimed in claim 3, wherein: the Hall fixing frame (2) is provided with an arc long hole (23) on two sides of the mounting groove (21).
5. A BLDC motor as set forth in claim 4, wherein: the rear end cover (1) is further provided with a wire outlet hole (18) in the groove (14), the Hall fixing frame (2) and the wire outlet hole (18) are correspondingly provided with a clearance groove (24), and a motor lead wire penetrates through the wire outlet hole (18) and the clearance groove (24) from the motor body (10) to extend into the controller (9).
6. A BLDC motor as in any one of claims 1 to 5, wherein: the Hall circuit board (31) is installed in the mounting groove (21) through the cooperation of mounting hole (312) and projection (25), the bottom of Hall mount (2) in mounting groove (21) upwards protrudes and has projection (25), on hall circuit board (31) with projection (25) correspond and be equipped with a plurality of mounting holes (312).
7. A BLDC motor as set forth in claim 6, wherein: the bottom of the mounting groove (21) is also provided with a positioning lug (26) in a protruding mode, the groove (14) is provided with a fan-shaped positioning groove (141) in a concave mode, and the positioning lug (26) is movably mounted in the fan-shaped positioning groove (141).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189091.6A CN108233660B (en) | 2018-03-08 | 2018-03-08 | BLDC motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189091.6A CN108233660B (en) | 2018-03-08 | 2018-03-08 | BLDC motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108233660A CN108233660A (en) | 2018-06-29 |
| CN108233660B true CN108233660B (en) | 2024-04-26 |
Family
ID=62667172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810189091.6A Active CN108233660B (en) | 2018-03-08 | 2018-03-08 | BLDC motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108233660B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019169842A1 (en) * | 2018-03-08 | 2019-09-12 | 中山大洋电机股份有限公司 | Bldc electric motor |
| WO2020015360A1 (en) * | 2018-07-14 | 2020-01-23 | 中山大洋电机股份有限公司 | Dc brushless outer rotor motor |
| CN109639062A (en) * | 2018-12-29 | 2019-04-16 | 锦霸工贸有限公司 | A kind of sensor fixing structure of deep-well pump motor |
| CN110492690A (en) * | 2019-10-09 | 2019-11-22 | 浙江众邦机电科技有限公司 | A kind of motor magnetism encoder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201774428U (en) * | 2010-06-02 | 2011-03-23 | 中山大洋电机制造有限公司 | Direct current brushless electric machine |
| CN202634229U (en) * | 2012-05-30 | 2012-12-26 | 中山大洋电机股份有限公司 | Brushless DC motor structure induced by Hall element |
| CN203660853U (en) * | 2013-12-20 | 2014-06-18 | 中山大洋电机制造有限公司 | DC brushless motor |
| WO2016119476A1 (en) * | 2015-01-29 | 2016-08-04 | 中山大洋电机股份有限公司 | Mounting structure of hall circuit board, and brushless direct current motor applying same |
| CN208078854U (en) * | 2018-03-08 | 2018-11-09 | 中山大洋电机股份有限公司 | A kind of BLDC motors |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8803386B2 (en) * | 2010-10-30 | 2014-08-12 | Zhongshan Broad-Ocean Motor Co., Ltd. | Brushless DC motor having structures for mounting a hall element and a magnetic ring outside a motor casing |
-
2018
- 2018-03-08 CN CN201810189091.6A patent/CN108233660B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201774428U (en) * | 2010-06-02 | 2011-03-23 | 中山大洋电机制造有限公司 | Direct current brushless electric machine |
| CN202634229U (en) * | 2012-05-30 | 2012-12-26 | 中山大洋电机股份有限公司 | Brushless DC motor structure induced by Hall element |
| CN203660853U (en) * | 2013-12-20 | 2014-06-18 | 中山大洋电机制造有限公司 | DC brushless motor |
| WO2016119476A1 (en) * | 2015-01-29 | 2016-08-04 | 中山大洋电机股份有限公司 | Mounting structure of hall circuit board, and brushless direct current motor applying same |
| CN208078854U (en) * | 2018-03-08 | 2018-11-09 | 中山大洋电机股份有限公司 | A kind of BLDC motors |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108233660A (en) | 2018-06-29 |
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