CN102457120A - Motor and radiating fan formed by same - Google Patents

Abstract

A motor and a heat dissipation fan composed of the motor comprise a shell base, a rotor, a stator and a barrier piece. The rotor is rotatably combined with the shell seat; the stator is used for driving the rotor to rotate and is arranged in the shell seat, the stator comprises a claw pole piece, an insulating piece and a coil, the claw pole piece is combined with the insulating piece, the coil is wound on the insulating piece, and the coil is electrically connected with a circuit board; the blocking piece is used for ensuring that the coil of the stator or the lead of the circuit board cannot be contacted with the shell seat, thereby providing better insulation effect.

Description

Motor and its cooling fan

technical field

The invention relates to a motor, in particular to a motor capable of ensuring the insulation effect between a metal shell and a coil assembly and a cooling fan formed therefrom.

Background technique

Please refer to FIG. 1 , which is an invention patent of "Inner Rotor Motor" published by Taiwan Publication No. 201032444. The conventional motor 7 generally includes a housing 71 , a stator 72 and a rotor 73 . The shell base 71 is a hollow shell; the stator 72 is accommodated inside the shell base 71, and the stator 72 is composed of several silicon steel sheets 721 and a coil 722; the rotor 73 is rotatably combined with the shell Seat 71. Thereby, the rotor 73 can be combined with a fan wheel 74 so that when the stator 72 drives the rotor 73 to rotate, the fan wheel 74 can provide a cooling effect.

The shell base 71 of the above-mentioned conventional motor 7 is usually made of metal material. Since there is no insulation design between the coil 722 wound by the stator 72 and the shell base 71, it is assumed that the coil 722 is wound on the silicon steel During the process of removing the sheet 721 , when the outer paint layer covered by the outer peripheral surface of the coil 722 falls off and contacts the metal housing 71 , it may cause the coil 722 to form a short circuit, thereby affecting the running quality of the motor 7 .

For this reason, please refer to shown in FIG. 2 , which is the invention patent of Taiwan Publication No. 201031087 "Inner Rotor Motor". The existing motor 8 also includes a housing 81, a stator 82 and a rotor 83. The shell base 81 is a hollow shell; the stator 82 is accommodated inside the shell base 81, and the stator 82 is composed of several silicon steel sheets 821, an upper insulating sleeve 822, a lower insulating sleeve 823 and a coil 824 ; The rotor 83 is rotatably combined with the housing base 81 .

The silicon steel sheets 821 of the above-mentioned conventional motor 8 are stacked on each other, the upper insulating sleeve 822 and the lower insulating sleeve 823 are respectively combined with the two ends of each silicon steel sheet 821, and the coil 824 is wound on the integrated silicon steel sheet 821 , the predetermined positions of the upper insulating cover 822 and the lower insulating cover 823; thereby, assuming that the outer paint layer coated on the outer peripheral surface of the coil 824 falls off during the winding process, the upper insulating cover 822 and the lower insulating cover 823 are A predetermined insulating function of the coil 824 may be provided.

However, please refer to FIG. 3 , which discloses a three-dimensional appearance view of an existing stator 9 that is relatively common in the market. Generally speaking, the insulating cover 91 of the existing stator 9 is provided with several connecting parts 92, and in the process of carrying out the winding operation of the coil 93, each of the connecting parts 92 can easily connect the windings of several coils 93 to each other; When the existing stator 9 is installed inside the metal shell seat of the motor, although the insulating cover 91 of the stator 9 can prevent part of the coil 93 from directly contacting the shell seat made of metal material, it is only for the coils wound on the connecting parts 92. The coil 93 of the existing stator 9 cannot provide a better insulation design; moreover, the coil 93 of the existing stator 9 usually must be connected to a circuit board, but the coil 93 extends to the position of the circuit board, or the circuit board itself The lead wires that have are still easy to improperly contact with the shell; The part extending to the circuit board or the wire itself may still improperly contact the metal shell, which may also cause the coil 93 or the wire to form a short circuit, thereby affecting the running quality of the motor.

Contents of the invention

The main object of the present invention is to provide a heat dissipation fan composed of a motor and the motor, which can ensure that the coil wound on the connecting part of the stator does not contact with the shell base, so as to effectively prevent the coil from forming a short circuit.

Another object of the present invention is to provide a motor that ensures that the coil extending from the stator to a circuit board does not contact the housing.

Another object of the present invention is to provide a motor that ensures that the wires of the circuit board will not contact the housing.

According to the present invention, the motor includes a casing, a rotor, a stator and a barrier. The rotor is rotatably combined with the casing; the stator is used to drive the rotor to rotate and is arranged inside the casing, and the stator includes a claw pole piece, an insulating piece and a coil, the claw pole piece and the insulating piece In combination, the insulator is provided with a connecting portion, and the coil is wound with several windings on the insulator, wherein the windings of the coil are connected to each other through the connecting portion, and the coil is electrically connected to a circuit board, and the coil is wound The part wound around the connecting part is an exposed part; the barrier is arranged between the exposed part of the coil and the shell base.

Based on the same technical concept, the motor of the present invention may also include a casing, a rotor, a stator and a barrier. The rotor is rotatably combined with the casing; the stator is used to drive the rotor to rotate and is arranged inside the casing, and the stator includes a claw pole piece, an insulating piece and a coil, and the insulating piece is combined with the claw pole piece , the coil is wound on the insulating member, wherein the coil is electrically connected to a circuit board; the blocking member is arranged between the part where the coil extends to the circuit board and the case base.

Based on the same technical concept, the motor of the present invention may further include a casing, a rotor, a stator and a barrier. The rotor is rotatably combined with the casing; the stator is used to drive the rotor to rotate and is arranged inside the casing, and the stator includes a claw pole piece, an insulating piece and a coil, and the insulating piece is combined with the claw pole piece , the coil is wound on the insulating member, wherein the coil is electrically connected to a circuit board, and the circuit board has a wire; the blocking member is arranged between the wire and the housing base.

A heat dissipation fan comprising the above motor, wherein: the housing base is externally connected to a fan frame by means of several connecting pieces, and several blades are formed on the outer peripheral surface of the rotor to form the heat dissipation fan.

The beneficial effect of the present invention is that: with the help of the barrier set between the exposed part of the coil and the shell, the motor of the present invention can ensure that the coil of the stator or the wire will not contact with the shell, so as to effectively prevent the coil from Or the wire forms a short circuit phenomenon, thereby achieving the effect of improving the insulation effect.

Description of drawings

Figure 1: An exploded perspective view of the existing first type of motor.

Figure 2: An exploded perspective view of the existing second motor.

Figure 3: Stereoscopic view of the existing stator.

Fig. 4: An exploded perspective view of the motor of the first embodiment of the present invention.

Fig. 5: An assembled sectional view of the motor of the first embodiment of the present invention.

Figure 6: A schematic diagram of the application of the motor of the present invention to a cooling fan.

Fig. 7: An exploded perspective view of the motor of the second embodiment of the present invention.

Fig. 8: An assembled sectional view of a motor according to a second embodiment of the present invention.

Fig. 9: A combined sectional view of another embodiment of the motor of the second embodiment of the present invention.

[Description of main component symbols]

〔this invention〕

1 shell seat

11 Housing 111 Perforation

112 openings 12 closures

13 Bearing 14 Expanded diameter part

15 Connectors 16 Frames

2 rotors

21 rotating shafts 22 buckle groups

23 hubs 231 blades

24 permanent magnets

3 stator

31 claw pole piece 32 insulating piece

321 connection part 33 coil

331 exposed part 34 circuit board

341 wire

4 barriers

41 positioning clip 42 card slot

5 barriers

〔existing〕

7 motor

71 shell seat 72 stator

721 silicon steel sheet 722 coil

73 rotors 74 fan wheels

8 motors

81 shell seat 82 stator

821 silicon steel sheet 822 upper insulating sleeve

823 lower insulation sleeve 824 coil

83 rotor

9 stator

91 Insulation sleeve 92 Connection part

93 coils

Detailed ways

In order to make the above-mentioned and other objects, features and advantages of the present invention more comprehensible, the preferred embodiments of the present invention are specifically cited below, together with the accompanying drawings, and are described in detail as follows:

Referring to FIG. 4 and FIG. 5 , the motor according to the first embodiment of the present invention includes a housing 1 , a rotor 2 , a stator 3 and a barrier 4 . The casing 1 is a hollow shell; the rotor 2 is rotatably combined with the casing 1; the stator 3 is combined inside the casing 1 and used to drive the rotor 2 to rotate; the barrier 4 is arranged on the Between the shell base 1 and the stator 3, an insulation function is provided.

The main function of the housing base 1 is to combine the stator 3 and pivot the rotor 2, therefore, the housing base 1 can be any structural design that can achieve the above purpose; in this embodiment, the housing base 1 is composed of a housing 11 and a closure 12, the opposite ends of the housing 11 are respectively formed with a perforation 111 and an opening 112, the closure 12 is combined with the opening 112; and, inside the housing 11 Several bearings 13 are also provided (only one bearing 13 may also be provided), wherein one bearing 13 may be combined with one side of the through hole 111 , and the other bearing 13 may be combined with the side surface of the closure 12 facing the housing 11 .

The rotor 2 has a rotating shaft 21, the rotating shaft 21 can be pivotally connected with the bearing 13 through the through hole 111, so that the rotor 2 can be rotatably combined with the casing 1; one end of the rotor 2 can pass through the casing 1 The outside is used to cooperate with a buckle set 22 to combine with a hub 23 , and the rotating shaft 21 of the rotor 2 is further combined with a permanent magnet 24 , and the permanent magnet 24 is located inside the housing 1 .

The stator 3 includes a claw pole piece 31 , an insulating piece 32 and a coil 33 . The claw pole piece 31 can be composed of several silicon steel sheets stacked and combined with each other, or can also be integrally formed into a single piece claw pole piece 31; the insulating piece 32 is combined with the claw pole piece 31 and has a connecting portion 321, wherein the The insulating member 32 can be any structural design that can provide the insulating function of the claw pole member 31 . For example, the insulating member 32 can be formed by one or several insulating sleeves, so that the coil 33 can be wound around the insulating sleeve; or the insulating member 32 can also be an insulating layer covering the claw pole member 31 , for the coil 33 to be wound on the surface of the insulating layer. In addition, the connecting portion 321 is any structural design that can be used for connecting the coil 33, for example: when the insulator 32 is an insulating sleeve, the connecting portion 321 can be a winding wire for the coil 33 to be conveniently wound. or when the insulating member 32 is an insulating layer, the connecting portion 321 can be omitted, and the coil 33 is electrically connected to a circuit board 34 .

In the embodiment shown in Figure 4, the insulator 32 is composed of an upper insulating sleeve and a lower insulating sleeve, and the connecting portion 321 is a plurality of winding posts formed on the lower insulating sleeve; the coil 33 is wound Several windings are placed on predetermined positions of the insulator 32 and electrically connected to the circuit board 34 (the circuit board 34 can also be arranged on the outside of the housing 1, and the coil 33 is electrically connected to the circuit board in an external manner. 34), the circuit board 34 can be provided with a wire 341 in addition, and the wire 341 is used for external power supply, and the coil 33 can use the connection part 321 of the insulating member 32 to connect each winding of the coil 33 during the winding process. To be connected and positioned; where the coil 33 is wound around the connecting portion 321 of the insulator 32 is defined as an exposed portion 331 .

Compared with the various types of the stator 3 disclosed above, when the insulating member 32 is an insulating sleeve, the barrier member 4 can be arranged between the exposed part 331 of the coil 33 and the housing 1; otherwise, when the insulating member 32 is an insulating layer or insulating cover, the barrier 4 can be arranged between the coil 33 extending to the circuit board 34 and the housing 1; thereby, to effectively prevent the exposed part 331 of the coil 33 or the coil 33 from extending The portion to the circuit board 34 directly contacts the case base 1 . Moreover, the barrier 4 can be further arranged between the wire 341 and the case base 1 , which can also effectively prevent the wire 341 from directly contacting the case base 1 .

In this embodiment, the barrier member 4 is a ring-shaped insulating sleeve, so that the ring-shaped insulating sleeve can be surrounded and attached to the inner peripheral surface of the housing base 1, so as to provide a more comprehensive protection of the coil 33 or the wire 341. Insulation effect; moreover, the barrier member 4 can be additionally provided with several positioning clips 41, and a locking groove 42 is formed between each positioning clip 41 and the outer peripheral surface of the barrier member 4, so that the barrier member 4 can be combined with the When the shell base 1 is used, the peripheral edge of the opening 112 on one side of the shell base 1 can be snapped into the locking groove 42, and the positioning clip 41 is used to clamp and fix the shell base 1; In the axial direction of the rotating shaft 21, the barrier member 4 has an axial height (H), whereby the exposed portion 331, the part where the coil 33 extends to the circuit board 34 or the wire 341 can all be located in the axial direction Height (H) in order to provide better insulation function.

Furthermore, the housing base 1 of the motor of the present invention preferably forms an enlarged diameter portion 14, which can correspond to the position of the exposed portion 331 of the coil 33; or the enlarged diameter portion 14 can extend to the circuit corresponding to the coil 33 plate 34; or the enlarged diameter portion 14 can correspond to the position of the wire 341, and the barrier 4 can be arranged on the inner peripheral surface of the enlarged diameter portion 14; thereby, when the shell base 1 forms the enlarged diameter portion At 14 o'clock, the coil 33 or the wire 341 will be less likely to be close to the housing base 1 , and the barrier member 4 located between the housing base 1 and the coil 33 will provide better insulation function.

When the motor of the present invention is actually used, the alternating magnetic field generated by the stator 3 can drive the rotor 2 to rotate through the permanent magnet 24; as shown in FIG. Such as ribs or vanes) are externally connected to a fan frame 16, and several blades 231 can be formed on the outer peripheral surface of the hub 23 of the rotor 2 to form a cooling fan. In this way, the heat dissipation fan can be installed in various electronic devices or electronic instruments to achieve a predetermined heat dissipation effect.

The main technical feature of the motor of the present invention is that the barrier 4 is arranged between the coil 33 and the shell base 1, and the barrier 4 can ensure that the exposed part 331 of the coil 33 and the coil 33 extend to The parts of the circuit board 34 or the wires 341 will not directly contact the housing 1 made of metal material, thereby effectively preventing the coil 33 from forming a short circuit and improving the running quality of the motor.

Referring to FIG. 7 and FIG. 8 , the motor according to the second embodiment of the present invention is disclosed. The motor also includes a housing 1 , a rotor 2 , a stator 3 and a barrier 5 . The casing 1 , the rotor 2 and the stator 3 in this embodiment are the same as the casing 1 , the rotor 2 and the stator 3 disclosed in the first embodiment, and will not be repeated here.

The main difference between the motor of the second embodiment of the present invention and the motor of the first embodiment is that the barrier member 5 can integrally cover the housing 1 by injection molding, and is also located between the exposed portion 331 of the coil 33 and Between the housing base 1, the assembly steps of the motor of the present invention can be relatively simplified, so as to effectively improve the convenience of assembly; To ensure that the barrier 5 provides a predetermined insulating function.

Also, as shown in FIG. 9 , the shell base 1 omits the enlarged diameter portion 14, and the barrier member 5 directly covers the inner peripheral surface of the housing base 1 (as shown in the figure, it can cover the entire inner peripheral surface) and the outer surface. The surrounding surface can also ensure that the barrier member 5 and the shell base 1 are combined with each other.

As mentioned above, with the help of the barriers 4, 5 provided between the exposed portion 331 of the coil 33 and the housing 1, the motor of the present invention can ensure that the coil 33 of the stator 3 or the wire 341 will not interact with the housing 1. contact to effectively prevent the coil 33 or the wire 341 from forming a short circuit, thereby achieving the effect of improving the insulation effect.

Claims (25)

1. motor is characterized in that comprising:

A shell block;

A rotor can combine this shell block rotatably;

A stator, in order to drive this rotor rotation and to be arranged at this shell block inside, this stator comprises pawl utmost point spare, insulating part and coil; This pawl utmost point spare combines with this insulating part; This insulating part is provided with at least one connecting portion, and this coil winds several windings in this insulating part, and wherein each winding of this coil interconnects through this connecting portion; And this coil is electrically connected to a circuit board, and the position that this coil is wound in this connecting portion is one and exposes portion; And

A barriers is arranged between the portion of exposing and this shell block of this coil.

2. motor according to claim 1 is characterized in that: this shell block forms a wide diameter portion, and this wide diameter portion is put exsertion part that should coil.

3. motor according to claim 1 and 2 is characterized in that: this barriers combines to be attached at the interior lateral circle surface of this shell block.

4. motor according to claim 1 and 2 is characterized in that: this rotor axially on, this barriers has axial height, this exsertion part is in the scope of this axial height.

5. motor according to claim 1 and 2 is characterized in that: this barriers is a ring-type insulating case.

6. motor according to claim 5 is characterized in that: this barriers is provided with several location intermediate plates in addition, respectively is somebody's turn to do and forms a clamping groove between the outer peripheral face of locating intermediate plate and this barriers, and a side periphery of this shell block is incorporated into this clamping groove.

7. motor according to claim 2 is characterized in that: this barriers one coats this shell block.

8. motor according to claim 7 is characterized in that: this barriers one is coated on the wide diameter portion of this shell block.

9. motor is characterized in that comprising:

A shell block;

A rotor can combine this shell block rotatably;

A stator, in order to drive this rotor rotation and to be arranged at this shell block inside, this stator comprises pawl utmost point spare, insulating part and coil, and this insulating part combines this pawl utmost point spare, and this coil is wound in this insulating part, and wherein this coil is electrically connected to a circuit board; And

A barriers is arranged at this coil and extends between the position and this shell block of this circuit board.

10. motor according to claim 9 is characterized in that: this shell block forms a wide diameter portion, and this wide diameter portion is to should coil extending to the position of this circuit board.

11. according to claim 9 or 10 described motors, it is characterized in that: this barriers combines to be attached at the interior lateral circle surface of this shell block.

12., it is characterized in that according to claim 9 or 10 described motors: this rotor axially on, this barriers has axial height, the position that this coil extends to this circuit board is positioned at the scope of this axial height.

13. according to claim 9 or 10 described motors, it is characterized in that: this barriers is a ring-type insulating case.

14. motor according to claim 13 is characterized in that: this barriers is provided with several location intermediate plates in addition, respectively is somebody's turn to do and forms a clamping groove between the outer peripheral face of locating intermediate plate and this barriers, and a side periphery of this shell block is incorporated into this clamping groove.

15. motor according to claim 10 is characterized in that: this barriers one coats this shell block.

16. motor according to claim 15 is characterized in that: this barriers one is coated on the wide diameter portion of this shell block.

17. a motor is characterized in that comprising:

A shell block;

A rotor can combine this shell block rotatably;

A stator, in order to drive this rotor rotation and to be arranged at this shell block inside, this stator comprises pawl utmost point spare, insulating part and coil; This pawl utmost point spare combines with this insulating part; This coil is wound in this insulating part, and wherein this coil is electrically connected to a circuit board, and this circuit board has a lead; And

A barriers is arranged between this lead and this shell block.

18. motor according to claim 17 is characterized in that: this shell block forms a wide diameter portion, and this wide diameter portion is to should lead location.

19. according to claim 17 or 18 described motors, it is characterized in that: this barriers combines to be attached at the interior lateral circle surface of this shell block.

20., it is characterized in that according to claim 17 or 18 described motors: this rotor axially on, this barriers has axial height, this lead is positioned at the scope of this axial height.

21. according to claim 17 or 18 described motors, it is characterized in that: this barriers is a ring-type insulating case.

22. motor according to claim 21 is characterized in that: this barriers is provided with several location intermediate plates in addition, respectively is somebody's turn to do and forms a clamping groove between the outer peripheral face of locating intermediate plate and this barriers, and a side periphery of this shell block is incorporated into this clamping groove.

23. motor according to claim 18 is characterized in that: this barriers one coats this shell block.

24. motor according to claim 23 is characterized in that: this barriers one is coated on the wide diameter portion of this shell block.

25. a radiator fan that is made up of each said motor of claim 1-24 is characterized in that: this motor shell block is by the external fan frame of several connectors, and the outer peripheral face of this rotor forms several blades, to constitute this radiator fan.

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