CN108633216B - Motor assembly and motor electric box thereof - Google Patents
Motor assembly and motor electric box thereof Download PDFInfo
- Publication number
- CN108633216B CN108633216B CN201710181686.2A CN201710181686A CN108633216B CN 108633216 B CN108633216 B CN 108633216B CN 201710181686 A CN201710181686 A CN 201710181686A CN 108633216 B CN108633216 B CN 108633216B
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- CN
- China
- Prior art keywords
- motor
- heat conducting
- heat
- stator
- circuit board
- 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.)
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Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 239000000615 nonconductor Substances 0.000 claims description 6
- 239000002470 thermal conductor Substances 0.000 claims description 2
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 7
- 239000004020 conductor Substances 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
- H05K7/20445—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing the coupling element being an additional piece, e.g. thermal standoff
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/205—Heat-dissipating body thermally connected to heat generating element via thermal paths through printed circuit board [PCB]
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Cooling System (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Motor Or Generator Frames (AREA)
Abstract
A motor assembly and a motor electrical box thereof are used for solving the problem that the existing motor electrical box can not effectively dissipate heat. The invention discloses an electric box of a motor. The heat conducting seat is provided with a first side and a second side, and the first side is used for being connected with a stator of a motor; the shell is combined with the heat conducting seat. One side of the first side and the second side forms a radiating fin group, and the other side of the first side and the second side is used for being combined with a heating source of a circuit board of the motor in a heat conduction way.
Description
Technical Field
The present invention relates to a motor assembly and a motor electrical box thereof, and more particularly, to a motor electrical box capable of effectively and rapidly dissipating heat generated by a circuit board of a motor to improve the reliability and service life of the motor.
Background
Referring to fig. 1, a conventional ceiling fan motor electrical box 9 disclosed in U.S. patent application No. US4637673 is shown, wherein the ceiling fan motor electrical box 9 has a housing 91, and the housing 91 is used to combine a fixed base S and a circuit board B. The housing 91 has a receiving space 911 and a plurality of air holes 912, wherein the receiving space 911 is used for receiving the circuit board B, and each air hole 912 penetrates through the wall surface of the housing 91 to communicate the receiving space 911 with the external space of the housing 91. Therefore, when the ceiling fan motor provided with the ceiling fan motor electrical box 9 is operated, the heat generated by the circuit board B for performing the driving operation can be dissipated to the outside of the housing 91 through the plurality of air holes 912.
However, since the housing 91 is not designed for the specific electronic component on the circuit board B that is more prone to generate heat, so as to quickly draw out the heat generated by the electronic component, nor is any ventilation design performed in the accommodating space 911, the heat generated by the circuit board B can only be slowly transferred from the accommodating space 911 to the outside of the housing 91 through the air holes 912 by thermal diffusion. However, since the heat dissipation method is very inefficient, heat is still accumulated in the accommodating space 911 for a long time, and it is obviously impossible to effectively improve the operation reliability and the service life of the electronic components on the circuit board B by dissipating heat.
Therefore, there is a need to improve the conventional motor electrical box and the motor assembly having the same in order to improve the operation reliability and the service life of the motor.
Disclosure of Invention
In order to solve the above problems, the present invention provides a motor assembly and an electrical box thereof, and particularly, a heat conduction design is performed for a heat source of a circuit board, so that heat generated by the heat source can be effectively dissipated, thereby improving the operation reliability and the service life of an electronic assembly of the circuit board.
The motor electrical box comprises a heat conducting seat and a shell. The heat conducting seat is provided with a first side and a second side, and the first side is used for being connected with a stator of a motor; the shell is combined with the heat conducting seat. The heat conducting seat forms a heat radiating fin group on one side of the first side and the second side, and the other side of the first side and the second side is used for being combined with a heating source of a circuit board of the motor in a heat conducting manner. Therefore, the motor electric box can directly radiate heat to the heating source, so that the operation reliability and the service life of the electronic component of the circuit board are improved.
Wherein, the first side and the second side are opposite sides of the heat conducting seat, and the shell is combined with the second side of the heat conducting seat; the structure has the function of guiding heat away from the heating source.
The heat conducting seat is provided with a through groove, the through groove extends from the second side to the first side, a shoulder part surrounding the through groove is formed at the position, far away from the second side, of the heat conducting seat, the heat conducting seat is provided with a combining piece, and the combining piece penetrates through the through groove, abuts against the shoulder part and is used for combining the stator; the structure has the effect of firmly combining the heat conducting seat and the stator.
Wherein, this heat conduction seat is equipped with a projection at this first side, and the one end that this projection kept away from this second side is used for combining this stator.
The heat conducting seat is provided with a through groove which penetrates through the convex column, a shoulder part which surrounds the through groove is formed at one end, far away from the second side, of the convex column, and the heat conducting seat is provided with a combining part which penetrates through the through groove, abuts against the shoulder part and is used for combining the stator; the structure has the effect of firmly combining the heat conducting seat and the stator.
The shell is provided with a through hole, and the radiating fin group is formed on the second side and is exposed out of the shell through the through hole; the structure has the effect of directly dissipating the heat transferred to the heat conducting seat to the outside of the motor electric box.
The motor assembly of the invention comprises a motor and a motor electrical box. The motor is provided with a stator, a rotor and a circuit board, wherein the rotor is rotationally combined with the stator relative to the stator, and the circuit board is electrically connected with the stator and used for enabling the stator to generate a physical quantity for driving the rotor to rotate. The motor electrical box is the motor electrical box as described above, wherein the side not provided with the heat dissipation fin set is thermally conductively combined with a heat source of the circuit board. Therefore, the motor component can directly radiate heat to the heating source, thereby improving the operation reliability and the service life of the electronic component of the circuit board.
The rotor is provided with at least one hole to communicate the outside with the space of the rotor facing the stator; the structure has the effect of forming an air flow channel to effectively dissipate the heat of the radiating fin group.
Wherein, the heating device also comprises a reinforced heat conductor which is attached to the heating source and the heat conducting seat; the structure has the effect of improving the heat conduction efficiency between the heating source and the heat conduction seat.
The motor electric box also comprises an electric insulating part, and the electric insulating part is arranged between the heat conducting seat and the circuit board; the structure has the effect of avoiding unexpected electrical contact between the circuit board and the heat conducting seat.
The invention has the beneficial effects that:
the motor component and the motor electrical box thereof form the radiating fin group by one side of the first side and the second side of the heat conducting seat, and the other side of the first side and the second side is combined with the heating source of the circuit board in a heat conducting way, so that the heat generated by the heating source can be effectively dissipated, and the operation reliability and the service life of the electronic component of the circuit board are improved.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1: a combined side sectional view of an electric box of a motor of a prior ceiling fan;
FIG. 2: the motor electric box of the first embodiment of the invention has a three-dimensional exploded view;
FIG. 3: the first embodiment of the invention has a combined sectional view of the motor assembly of the motor electrical box;
FIG. 4: the second embodiment of the present invention has an assembled cross-sectional view of the motor assembly of the electrical motor box in another implementation.
Description of the reference numerals
1 motor 11 stator
111 fixed shaft 12 rotor
121 aperture 13 circuit board
131 heat generating source
2 first side of heat conducting seat 21
22 second side 23 set of heat sink fins
24 groove 25 shoulder
26 combining piece 27 convex column
3 through hole of shell 31
4 electric insulating part
P-reinforced heat conductor
[ Prior Art ]
9 ceiling fan motor electric box 91 casing
912 air hole of 911 accommodation space
The B circuit board S is fixed on the base.
Detailed Description
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below:
referring to fig. 2 and 3, a first embodiment of the motor assembly and the motor electrical box thereof according to the present invention is shown, wherein the motor assembly of the first embodiment is used as a ceiling fan motor, but the present invention is not limited to the form of the fan to which the motor assembly and the motor electrical box thereof are applied. The motor assembly comprises a motor 1, a heat conducting base 2, a housing 3 and an electrical insulating member 4, wherein the motor electrical box may comprise the heat conducting base 2, the housing 3 and the electrical insulating member 4, but the electrical insulating member 4 disposed in the motor assembly and the motor electrical box thereof may be omitted as required.
The motor 1 has at least one stator 11, one rotor 12 and one circuit board 13, and when the motor 1 is a ceiling fan motor, the stator 11 has one fixing shaft 111, and the fixing shaft 111 is used to couple the motor 1 to a predetermined position of a ceiling. In detail, the rotor 12 is rotatably coupled to the stator 11 relative to the stator 11, and preferably rotatably coupled to an outer circumferential surface of the fixed shaft 111. The circuit board 13 is electrically connected to the stator 11, so that the stator 11 generates a physical quantity for driving the rotor 12 to rotate, for example, a magnet for forming an alternating magnetic field to cyclically repel or pull the rotor 12, that is, the circuit board 13 may be a circuit board for controlling or driving or having both functions, which is a conventional motor driving means in the art and will not be described herein again. Meanwhile, the circuit board 13 includes a heat generating source 131, such as a control chip, for easily generating heat when the motor 1 is operated.
The heat conducting base 2 is preferably made of a material with excellent heat conducting characteristics (e.g. aluminum or aluminum alloy material, which is widely used in the industry), and the heat conducting base 2 has a first side 21 and a second side 22, wherein the first side 21 is used for connecting the stator 11 of the motor 1, and the first side 21 and the second side 22 are preferably opposite sides of the heat conducting base 2. The heat conducting base 2 forms a heat dissipating fin set 23 on one of the first side 21 and the second side 22, so that heat conducted to the heat conducting base 2 is dissipated by air flow adjacent to the heat dissipating fin set 23; the heat dissipating fin assembly 23 may be in the shape of a sheet or a needle, the invention is not limited thereto, and in the first embodiment, the heat dissipating fin assembly 23 is formed on the second side 22 (i.e. on the side of the heat conducting base 2 away from the stator 11); additionally, the other side of the first side 21 and the second side 22 is thermally coupled to the heat source 131 of the circuit board 13 of the motor 1, and in the first embodiment, the heat conducting base 2 is coupled to the heat source 131 by the first side 21 (i.e. the side of the heat conducting base 2 facing the stator 11). Wherein, a reinforced heat conductor P can be arranged between the heat source 131 and the heat conducting base 2, and the reinforced heat conductor P is attached to the heat source 131 and the heat conducting base 2, so as to improve the heat conduction efficiency between the heat source 131 and the heat conducting base 2; for example, but not limited to, the reinforced Thermal conductor P may be a Thermal paste or a Thermal gel (Thermal pad) disposed between the heat source 131 and the Thermal pad 2.
Furthermore, the heat conducting base 2 preferably has a through groove 24, the through groove 24 extends from the second side 22 to the first side 21, and the heat conducting base 2 forms a shoulder 25 surrounding the through groove 24 at a position far away from the second side 22, so that a bonding member 26 passes through the through groove 24, abuts against the shoulder 25 and is bonded to the stator 11. In detail, in the present embodiment, a convex pillar 27 is selectively disposed on the first side 21 of the heat conducting base 2, and the convex pillar 27 is combined with the stator 11 from an end far away from the second side 22; the through groove 24 can penetrate the protruding pillar 27, and the shoulder 25 is formed at an end of the protruding pillar 27 away from the second side 22.
The housing 3 is coupled to the heat conductive base 2, and is preferably coupled to the second side 22 of the heat conductive base 2. In the first embodiment, in order to have a better heat dissipation effect, the housing 3 may have a through hole 31, and the through hole 31 allows the heat dissipation fin set 23 to pass through the through hole 31 and be exposed outside the housing 3. Additionally, as shown in fig. 3, the shape of the housing 3 is preferably matched with the shape of the rotor 12, so as to wrap a part of the stator 11 (preferably including the pole piece and the winding) between the housing 3 and the rotor 12, thereby preventing external dust from accumulating on the stator 11 and affecting the operation of the motor assembly. The housing 3 may be made of a material with good rigidity and heat resistance, such as iron, stainless steel or special engineering plastics.
The electrical insulator 4 is an optional component, and particularly when the circuit board 13 is disposed very close to the heat conducting base 2 for the purpose of light weight and thinness, the motor assembly of the present invention preferably has the electrical insulator 4 disposed between the heat conducting base 2 and the circuit board 13 to prevent the circuit board 13 from short-circuiting due to unintended electrical contact between the circuit board 13 and the heat conducting base 2. When the electrical insulator 4 is disposed, the electrical insulator 4 is disposed on the first side 21 or the second side 22 of the heat conducting base 2 facing the heat generating source 131 (in the first embodiment, the electrical insulator 4 is disposed on the first side 21).
With the above structure, when the circuit board 13 of the motor 1 outputs a signal to control the stator 11 to generate a driving physical quantity to rotate the rotor 12, the heat generated by the heat source 131 of the circuit board 13 can be directly transferred to the heat conducting base 2, and then the heat is dissipated to the outside of the motor electrical box by the heat dissipating fin group 23 of the heat conducting base 2. In other words, the electrical motor box of the present invention is designed to conduct heat particularly to the heat source 131 of the circuit board 13, so as to effectively dissipate the heat generated by the heat source 131, and further improve the operation reliability and the service life of the electronic components of the circuit board 13.
Fig. 4 shows a second embodiment of the motor assembly and the motor electrical box of the present invention. Compared to the first embodiment, the heat conducting base 2 of the second embodiment has the heat dissipating fin set 23 formed on the first side 21, the heat conducting base 2 is combined with the heat generating source 131 by the second side 22, and the rotor 12 is further provided with at least one aperture 121 to communicate the outside with the space of the rotor 12 facing the stator 11. In other words, in the present embodiment, the heat conducting base 2 is located between the stator 11 and the circuit board 13, and the aperture 121 is used to form an airflow channel for airflow between the aperture 121 and the heat dissipating fin assembly 23. Therefore, even though the heat dissipating fin group 23 is not exposed outside the housing 3, the heat dissipating fin group 23 can still be dissipated by the airflow flowing between the aperture 121 and the heat dissipating fin group 23, thereby achieving the purpose of improving the operation reliability and the service life of the electronic components of the circuit board 13.
In summary, the motor assembly and the motor electrical box thereof of the present invention form the heat dissipating fin set 13 on one of the first side 21 and the second side 22 of the heat conducting base 2, and combine the other of the first side 21 and the second side 22 with the heat generating source 131 of the circuit board 13 in a heat conducting manner, so that the heat generated by the heat generating source 131 can be effectively dissipated, and the operation reliability and the service life of the electronic assembly of the circuit board 13 can be further improved.
Claims (9)
1. A motor electrical box, comprising:
a heat conducting base having a first side and a second side, the first side for connection to a stator of a motor; and
a shell combined with the heat conducting seat;
the heat conducting seat is provided with a through groove, the through groove extends from the second side to the first side, a shoulder surrounding the through groove is formed at the position of the heat conducting seat far away from the second side, and the heat conducting seat is provided with a combining piece which penetrates through the through groove, abuts against the shoulder and is used for combining the stator.
2. The electrical motor housing of claim 1, wherein the first and second sides are opposite sides of the heat conducting base, and the housing is coupled to the second side of the heat conducting base.
3. The electrical motor housing of claim 1, wherein the housing has a through hole, and the heat sink fin assembly is formed on the second side and exposed from the through hole to the outside of the housing.
4. A motor electrical box, comprising:
a heat conducting base having a first side and a second side, the first side for connection to a stator of a motor; and
a shell combined with the heat conducting seat;
the heat conducting seat forms a radiating fin group on one side of the first side and the second side, the other side of the first side and the second side is used for being combined with a heating source of a circuit board of the motor in a heat conducting mode, the first side of the heat conducting seat is provided with a convex column, and one end, far away from the second side, of the convex column is used for being combined with the stator.
5. The electrical motor housing of claim 4, wherein the heat conducting base has a through slot extending through the protrusion, a shoulder surrounding the through slot is formed at an end of the protrusion away from the second side of the heat conducting base, and the heat conducting base has a connector extending through the through slot, abutting against the shoulder, and being used for connecting the stator.
6. A motor assembly, comprising:
the motor is provided with a stator, a rotor and a circuit board, wherein the rotor is rotationally combined with the stator relative to the stator, and the circuit board is electrically connected with the stator and used for enabling the stator to generate a physical quantity for driving the rotor to rotate; and
a motor electrical box as claimed in any one of claims 1 to 5, wherein the side not provided with the set of heat dissipating fins is thermally conductively coupled to a heat generating source of the circuit board.
7. The motor assembly as claimed in claim 6, wherein the heat dissipating fin set is formed on the first side, and the rotor is provided with at least one aperture for communicating an outside with a space of the rotor facing the stator.
8. The motor assembly of claim 6, further comprising a reinforcing thermal conductor abutting the heat source and the thermal base.
9. The motor assembly of claim 6, further comprising an electrical insulator disposed between the heat conducting base and the circuit board.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106108745 | 2017-03-16 | ||
| TW106108745A TWI639292B (en) | 2017-03-16 | 2017-03-16 | Motor assembly and electrical box thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108633216A CN108633216A (en) | 2018-10-09 |
| CN108633216B true CN108633216B (en) | 2020-03-27 |
Family
ID=63707439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710181686.2A Active CN108633216B (en) | 2017-03-16 | 2017-03-24 | Motor assembly and motor electric box thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108633216B (en) |
| TW (1) | TWI639292B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111435800A (en) * | 2019-01-11 | 2020-07-21 | 台达电子工业股份有限公司 | Motor structure |
| CN111435801B (en) * | 2019-01-11 | 2022-04-05 | 台达电子工业股份有限公司 | Motor base and motor structure |
| US11258332B2 (en) | 2019-01-11 | 2022-02-22 | Delta Electronics, Inc. | Motor base and motor structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002112504A (en) * | 2000-09-27 | 2002-04-12 | Zexel Valeo Climate Control Corp | Brushless motor |
| US6798098B1 (en) * | 2003-10-10 | 2004-09-28 | Chun Ya Tai | Heat-radiating structure for ceiling fan's motor housing |
| CN101536287A (en) * | 2006-11-15 | 2009-09-16 | Lg电子株式会社 | Outer rotor type motor and outdoor unit having the same |
| CN102340208A (en) * | 2010-07-15 | 2012-02-01 | 建准电机工业股份有限公司 | Motor and cooling fan provided with same |
| CN103872849A (en) * | 2012-12-10 | 2014-06-18 | 日本电产株式会社 | Motor and fan |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW434980B (en) | 1999-03-16 | 2001-05-16 | Sunonwealth Electr Mach Ind Co | Brushless DC motor and its stator |
| JP4524376B2 (en) | 2000-03-23 | 2010-08-18 | 並木精密宝石株式会社 | Ultra-thin fan motor with heat sink |
| US20050074346A1 (en) * | 2003-10-02 | 2005-04-07 | Torrington Research Company | Low part count blower-motor assembly in common housing |
| TWI363471B (en) | 2008-01-21 | 2012-05-01 | Delta Electronics Inc | Fan and its motor with dustproof and heat-dissipating functions |
-
2017
- 2017-03-16 TW TW106108745A patent/TWI639292B/en active
- 2017-03-24 CN CN201710181686.2A patent/CN108633216B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002112504A (en) * | 2000-09-27 | 2002-04-12 | Zexel Valeo Climate Control Corp | Brushless motor |
| US6798098B1 (en) * | 2003-10-10 | 2004-09-28 | Chun Ya Tai | Heat-radiating structure for ceiling fan's motor housing |
| CN101536287A (en) * | 2006-11-15 | 2009-09-16 | Lg电子株式会社 | Outer rotor type motor and outdoor unit having the same |
| CN102340208A (en) * | 2010-07-15 | 2012-02-01 | 建准电机工业股份有限公司 | Motor and cooling fan provided with same |
| CN103872849A (en) * | 2012-12-10 | 2014-06-18 | 日本电产株式会社 | Motor and fan |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI639292B (en) | 2018-10-21 |
| TW201836243A (en) | 2018-10-01 |
| CN108633216A (en) | 2018-10-09 |
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