CN201490785U - Inner rotor motor and radiating fan with same - Google Patents

Inner rotor motor and radiating fan with same Download PDF

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Publication number
CN201490785U
CN201490785U CN2009201673554U CN200920167355U CN201490785U CN 201490785 U CN201490785 U CN 201490785U CN 2009201673554 U CN2009201673554 U CN 2009201673554U CN 200920167355 U CN200920167355 U CN 200920167355U CN 201490785 U CN201490785 U CN 201490785U
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CN
China
Prior art keywords
rotating part
inner rotor
side wall
rotor motor
conjunction
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Expired - Lifetime
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CN2009201673554U
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Chinese (zh)
Inventor
洪银树
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Sunonwealth Electric Machine Industry Co Ltd
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Sunonwealth Electric Machine Industry Co Ltd
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Priority to CN2009201673554U priority Critical patent/CN201490785U/en
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Publication of CN201490785U publication Critical patent/CN201490785U/en
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Abstract

The utility model relates to an inner rotor motor and a radiating fan with the same. The inner rotor motor comprises a base, a stator and a rotor, the base is provided with a pivoted portion, the stator is combined with the base and provided with a coil group, the rotor comprises a rotating part, a rotating shaft and a permanent magnet, the rotating part comprises a combining portion and a lateral wall, one end of the rotating shaft is combined with the combining portion while the other end is rotatably combined with the pivoted portion of the base, and the permanent magnet is combined with the outer peripheral surface of the lateral wall and is opposite to the coil group. Because the rotating shaft does not need to be combined with the permanent magnet via a penetrating form, the length of the rotating shaft can be reduced effectively so as to reduce integral axial heights of the inner rotor motor and the radiating fan with the same.

Description

Inner rotor motor and have the radiator fan of inner rotor motor
Technical field
The utility model is about a kind of radiator fan and motor thereof, particularly about a kind of inner rotor motor, and the radiator fan that is driven by this inner rotor motor.
Background technology
Please refer to shown in Figure 1ly, be the existing radiator fan 7 that is driven with external-rotor motor, this radiator fan 7 roughly comprises a fan frame 71, a stator 72, a circuit board 73 and a rotor 74.The inboard of this fan frame 71 is provided with a central siphon 711, and at least one bearing 712 is set in this central siphon 711; This stator 72 and circuit board 73 are sheathed on the outside circumference of this central siphon 711, and this circuit board 73 is electrically connected this stator 72; This rotor 74 has a rotating shaft 741 and an impeller 742, and these rotating shaft 741 1 ends stretch through to this central siphon 711 and articulate this bearing 712,742 other ends that are incorporated into this rotating shaft 741 of this impeller, and this impeller 742 is provided with a permanent magnet 743 that should stator 72.Whereby, produce the effect of magnetic interlinkage between this this stator 72 of circuit board 73 may command and this permanent magnet 743,, and then can reach a thermolysis so that drive this impeller 742 spinning movements.
The aforementioned existing radiator fan 7 main external-rotor motors that adopt are driven, but generally speaking, external-rotor motor roughly has problems such as the relatively poor and rotating speed of rotational stabilization is lower compared to inner rotor motor, and electronic product causes the also lifting gradually of the desired heat sinking function of electronic product generally towards direction research and development designs such as high speed, function integration and microminiaturized trend now.Therefore, the aforementioned existing radiator fan 7 that is driven with external-rotor motor also can't satisfy the radiating requirements of portions of electronics product fully.
For making radiator fan, also there is relevant dealer to research and develop and a kind ofly discloses " fan and inner rotor motor thereof " patent of invention case No. 200744290 as TaiWan, China applicable to the higher electronic product of radiating requirements.Please refer to shown in Figure 2ly, disclose a kind of existing radiator fan 8 that is driven with inner rotor motor, this radiator fan 8 roughly comprises a housing 81, a stator structure 82, a rotor structure 83, a drive unit 84 and an impeller 85.This housing 81 is made up of one first housing 811 and one second housing 812, and this first housing 811 and one second housing, 812 inside respectively are provided with a bearing 813; This stator structure 82 has a magnetic conductive component 821; This rotor structure 83 has a rotating shaft 831 and a magnetic element 832, and this rotating shaft 831 wears inner and articulate this two bearing 813 to this housing 81, can wear for this magnetic element 832 in addition and be incorporated into this rotating shaft 831 and to should magnetic conductive component 821; This drive unit 84 is electrically connected this magnetic conductive component 821; This impeller 85 links this rotating shaft 831 and is positioned at this housing 81 outsides.Whereby, the sense of current of this this magnetic conductive component 821 of drive unit 84 may command so that produce the effect of magnetic interlinkage with this magnetic element 832, and then drives this rotor structure 83 and impeller 85 spinning movements.
Yet the rotating shaft 831 of the aforementioned existing radiator fan 8 that is driven with inner rotor motor must have the fixed position (L1) that can wear combination for this magnetic element 832; Moreover, for avoiding influencing the rotational efficienty of this impeller 85, must have enough sense magnetic area between this magnetic element 832 and this magnetic conductive component 821, therefore, this fixed position (L1) must be reserved suitable length, so that wear in conjunction with this magnetic element 832; In addition, rotating shaft 831 also must have and can articulate pivot joint position (L2), (L3) that combine mutually with this first housing 811, second housing 812 and two bearings 813, can guarantee that so this rotating shaft 831 can stablize rotation.Generally speaking, this rotating shaft 831 must comprise the length of this fixed position (L1) and this pivot joint position (L2), (L3) at least simultaneously, cause the length of this rotating shaft 831 to be difficult for further reduction, the radiator fan 8 that also causes this existing inner rotor motor and have this inner rotor motor is difficult to the further whole axial height of reduction again, and limit can be designed to the feasibility of more compactization relatively.
Please refer to shown in Figure 3ly, other discloses a kind of existing radiator fan 9 that is driven with inner rotor motor equally, and this radiator fan 9 comprises a fan frame 91, an inner rotor motor 92, an impeller 93 and a circuit board 94.This fan frame 91 is with plastic material ejection formation one a fan frame portion 911 and a motor shell 912, and this motor shell 912 is positioned at this fan frame portion 911 inboards, and these motor shell 912 inside also are respectively equipped with two bearings 913; This inner rotor motor 92 is incorporated into the inside of this motor shell 912 and comprises a rotating shaft 921, a magnetic element 922 and a stator 923, these rotating shaft 921 1 ends pass to this motor shell 912 outsides, and this magnetic element 922 wears in conjunction with this rotating shaft 921 and this stator 923 of contraposition; This impeller 93 is incorporated into an end of this rotating shaft 921 and is positioned at the outside of this motor shell 912; This circuit board 94 is electrically connected this stator 923.Whereby, can utilize this inner rotor motor 92 to drive these impeller 93 spinning movements, so that a predetermined heat dissipation effect to be provided.
The difference that this another kind has radiator fan 9 and aforementioned existing radiator fan 8 now only is to have fan frame 91, so that utilize the design of this fan frame 91 to guide the air-flow that is produced when concentrated this impeller 93 turns round.Yet, the rotating shaft 921 of another kind of existing radiator fan 9 still must have the fixed position (L1) that can wear combination for this magnetic element 922, and have and to articulate pivot joint position (L2), (L3) that combines mutually with this motor shell 912 and two bearings 913, therefore, the length of this rotating shaft 921 is difficult for reduction equally, causes the whole axial height that has inner rotor motor 92 now and have the radiator fan 9 of this inner rotor motor 92 still can't reduce.
The utility model content
The utility model purpose is for improveing above-mentioned shortcoming, a kind of inner rotor motor to be provided and to have the radiator fan of inner rotor motor, in order to reduce whole axial height.
According to the utility model inner rotor motor, comprise: a pedestal has an articulated section; One stator, in conjunction with this pedestal, this stator comprises a body and a coil groups, and this body is provided with a containing hole, and this coil groups is in conjunction with this body and around this containing hole; An and rotor, comprise a rotating part, a rotating shaft and a permanent magnet, this rotating part comprises a joint portion and a side wall, this joint portion periphery is provided with this side wall, this side wall stretches to the containing hole of this stator, this rotating shaft one end is in conjunction with the joint portion of this rotating part, and the other end is in conjunction with the articulated section of this pedestal, and this permanent magnet is in conjunction with the outer peripheral face of the side wall of this rotating part and relative with this coil groups.
Radiator fan according to the utlity model has inner rotor motor comprises: a fan frame is provided with an air intake vent and an air outlet; One pedestal is positioned at this fan frame, and this pedestal has an articulated section, and this pedestal connects this fan frame with several connectors; One stator, in conjunction with this pedestal, this stator comprises a body and a coil groups, and this body is provided with a containing hole, and this coil groups is in conjunction with this body and around this containing hole; An and rotor, comprise a rotating part, a rotating shaft and a permanent magnet, this rotating part comprises a joint portion and a side wall, this joint portion periphery is provided with this side wall, and this side wall stretches to the containing hole of this stator, and this rotating shaft one end is in conjunction with the joint portion of this rotating part, the other end is in conjunction with the articulated section of this pedestal, this permanent magnet is in conjunction with the outer peripheral face of the side wall of this rotating part and relative with this coil groups, and the rotating part in this rotor extends a ringwall in addition, and the outer peripheral face of this ringwall is provided with several blades.
According to the radiator fan that the utlity model has inner rotor motor, other comprises: a pedestal has an articulated section; One stator, in conjunction with this pedestal, this stator comprises a body and a coil groups, and this body is provided with a containing hole, and this coil groups is in conjunction with this body and around this containing hole; One rotor, comprise a rotating part, a rotating shaft and a permanent magnet, this rotating part comprises a joint portion and a side wall, this joint portion periphery is provided with this side wall, this side wall stretches to the containing hole of this stator, and this joint portion is provided with a perforation, and this rotating shaft one end is in conjunction with the joint portion of this rotating part and this perforation that stretches through out, the other end is in conjunction with the articulated section of this pedestal, and this permanent magnet is in conjunction with the outer peripheral face of the side wall of this rotating part and relative with this coil groups; And a flabellum, be incorporated into stretch through out an end of this perforation of this rotating shaft.
The beneficial effects of the utility model are, the utility model inner rotor motor and have the radiator fan of inner rotor motor all can be incorporated into the structural design of the side wall of this rotating part by permanent magnet, and this rotating shaft need not be worn in conjunction with this permanent magnet again; Whereby, can effectively reduce the length of this rotating shaft, and then reach the effect of the whole axial height of the radiator fan that can reduce this inner rotor motor and have inner rotor motor.
Description of drawings
Fig. 1: the assembled sectional view that has the radiator fan that is driven with external-rotor motor now.
Fig. 2: the assembled sectional view of existing first kind of radiator fan that is driven with inner rotor motor.
Fig. 3: the assembled sectional view of existing second kind of radiator fan that is driven with inner rotor motor.
Fig. 4: the three-dimensional exploded view of the inner rotor motor of the utility model first embodiment.
Fig. 5: the assembled sectional view of the inner rotor motor of the utility model first embodiment.
Fig. 6: the assembled sectional view of the inner rotor motor of the utility model second embodiment.
Fig. 7: the assembled sectional view () of the inner rotor motor of the utility model the 3rd embodiment.
Fig. 8: the assembled sectional view (two) of the inner rotor motor of the utility model the 3rd embodiment.
Fig. 9: the assembled sectional view () that the utlity model has the radiator fan of inner rotor motor.
Figure 10: the assembled sectional view (two) that the utlity model has the radiator fan of inner rotor motor.
The main element symbol description:
1 inner rotor motor, 11 pedestals, 111 articulated sections, 112 retainer rings
113 buttons are held sheet 114 bearings 115 wear plates 12 stators
121 body 121a containing holes, 122 coil groups, 13 rotors
131 rotating part 131a joint portion 131b side wall 131c rooms
131d ringwall 132 rotating shafts 133 permanent magnets 134 envelope magnet rings
14 drive circuits, 2 inner rotor motors, 21 pedestals
211 articulated sections, 212 retainer rings, 213 buttons are held sheet 214 bearings
215 wear plates, 22 stators, 221 body 221a containing holes
222 coil groups, 23 rotors, 231 rotating part 231a joint portions
231b side wall 231c room 231d 232 rotating shafts of boring a hole
233 permanent magnets, 24 drive circuits, 3 inner rotor motors, 31 pedestals
311 articulated sections, 312 retainer rings, 313 buttons are held sheet 314 bearings
315 wear plates, 32 stators, 321 body 321a containing holes
322 coil groups, 33 rotors, 331 rotating part 331a joint portions
331b side wall 331c room 332 rotating shafts 333 permanent magnets
334 envelope magnet ring 334a protuberances, 4 fan frames, 41 connectors
42 air intake vents, 43 air outlets, 5 blades, 6 flabellums
7 radiator fans, 71 fan frames, 711 central siphons, 712 bearings
741 rotating shafts of 72 stators, 73 circuit boards, 74 rotors
742 impellers, 743 permanent magnets, 8 radiator fans, 81 housings
811 first housings, 812 second housings, 813 bearings, 82 stator structures
821 magnetic conductive components, 83 rotor structures, 831 rotating shafts, 832 magnetic elements
84 drive units, 85 impellers, 9 radiator fans, 91 fan frames
911 fan frame portion 912 motor shells, 913 bearings, 92 inner rotor motors
921 rotating shafts, 922 magnetic elements, 923 stators, 93 impellers
94 circuit boards
Embodiment
For above-mentioned and other purpose of the present utility model, feature and advantage can be become apparent, preferred embodiment of the present utility model cited below particularly, and cooperate appended graphicly, be described in detail below:
Please refer to Fig. 4 and shown in Figure 5, the inner rotor motor 1 of the utility model first embodiment comprises a pedestal 11, a stator 12 and a rotor 13.This pedestal 11 can supply in conjunction with this stator 12; This rotor 13 is rotatably in conjunction with this pedestal 11; Whereby, to utilize this stator 12 to drive these rotor 13 spinning movements.
This pedestal 11 has an articulated section 111, and this articulated section 111 can be a central siphon, an axle bed or other can be for this rotor 13 structure of combination rotatably; In embodiment as shown in the figure, this articulated section 111 is a central siphon, and this central siphon can be held members such as sheet 113, bearing 114 or wear plate 115 as retainer ring 112, button for ccontaining, so that this rotor 13 can be successfully by these articulated section 111 spinning movements.
This stator 12 comprises a body 121 and a coil groups 122.This body 121 is provided with a containing hole 121a; This coil groups 122 is in conjunction with this body 121 and around this containing hole 121a, and wherein this coil groups 122 can be incorporated into the medial surface of this body 121 as shown in the figure; Perhaps, this coil groups 122 also can select to be incorporated into the lateral surface (not illustrating) of this body 121, can reach the function that drives this rotor 13 equally.
This rotor 13 comprises a rotating part 131, a rotating shaft 132 and a permanent magnet 133.Wherein:
This rotating part 131 comprises a joint portion 131a and a side wall 131b, this joint portion 131a periphery is provided with this side wall 131b, this side wall 131b stretches to the containing hole 121a of this stator 12, and this side wall 131b is preferably a ring, so that center on formation one room 131c by this ring; In addition, this joint portion 131a and the visual demand of this side wall 131b are formed in one or removable design.
One end of this rotating shaft 132 is in conjunction with the joint portion 131a of this rotating part 131, and when this rotating part 131 during with plastic material one ejection formation, an end of this rotating shaft 132 is preferable can be by the joint portion combination that 131a coats of this rotating part 131; The other end of this rotating shaft 132 is then rotatably in conjunction with the articulated section 111 of this pedestal 11, and this articulated section 111 preferable this room 131c that are positioned at, and whereby, also can reduce the axial height of this inner rotor motor 1.
This permanent magnet 133 is in conjunction with the outer peripheral face of the side wall 131b of this rotating part 131, this combination can adopt as tight fit, buckle, bonding or other can reach the technological means of same fixed effect; This permanent magnet 133 is positioned at the containing hole 121a of this stator 12 and relative with this coil groups 122; In addition, the preferable envelope magnet ring 134 that is provided with between this permanent magnet 133 and this side wall 131b, this envelope magnet ring 134 can provide an envelope magnetic effect at this permanent magnet 133, again, these rotating part 131 preferable one injection molding methods that adopt are made, and in the process of one ejection formation, can cooperate the while one to coat an end and this permanent magnet 133 (promptly be commonly called as and penetrate bag) of this rotating shaft 132, make the making of this rotor 13 more easy.
During the utility model inner rotor motor 1 actual use, this stator 12 can be electrically connected one drive circuit 14, and this drive circuit 14 can directly be incorporated into this pedestal 11 (as shown in Figure 5); Perhaps, this stator 12 also can be by external this drive circuit 14 (not illustrating) of a power supply wiring, avoiding because of this pedestal 11 is combined with this drive circuit 14, and causes the axial height of this inner rotor motor 1 to increase.Whereby, the coil groups 122 of these drive circuit 14 actuatable these stators 12 makes between this coil groups 122 and this permanent magnet 133 to produce the effect of magnetic interlinkage, and then to drive this rotor 13 be that the center is rotated with the articulated section 111 of this pedestal 11.
By the architectural feature of preceding taking off, the main feature of the inner rotor motor 1 of the utility model first embodiment includes at least: this permanent magnet 133 is incorporated into the side wall 131b of this rotating part 131, and also the i.e. rotating shaft 132 of this rotor 13 need not be in conjunction with this permanent magnet 133; Therefore, compared to must be simultaneously as the rotating shaft 831,921 of the existing inner rotor motor of Fig. 2 and Fig. 3 in conjunction with magnetic element 832,922 and articulate two bearings 813,913, cause the length of this rotating shaft 831,921 to be difficult for shortcomings such as further reduction; The length of the rotating shaft 132 of the utility model inner rotor motor 1 then can be reduced (because of need not be in conjunction with permanent magnet 133) relatively, with the whole axial height of this inner rotor motor 1 of effective reduction, and can be towards the direction research and development design of more compactization.
Please refer to shown in Figure 6ly, the inner rotor motor 2 of the utility model second embodiment comprises a pedestal 21, a stator 22 and a rotor 23, and wherein this pedestal 21 and stator 22 are identical with pedestal 11 and the stator 12 that first embodiment is disclosed, and holds and does not give unnecessary details.Therefore, the pedestal 21 of the utility model second embodiment can include articulated section 211, retainer ring 212 equally, detain and hold architectural features such as sheet 213, bearing 214 or wear plate 215; This stator 22 can include architectural features such as body 221, containing hole 221a, coil groups 222 equally, and this stator 22 also can be electrically connected one drive circuit 24.
The rotor 23 of the utility model second embodiment comprises a rotating part 231, a rotating shaft 232 and a permanent magnet 233.This rotating part 231 is a metal cap, this metal cap comprises a joint portion 231a and a side wall 231b, this joint portion 231a periphery is provided with this side wall 231b, this side wall 231b can stretch to the containing hole 221a of this stator 22, this side wall 231b is preferably a ring, so that around forming a room 231c; In addition, this rotating part 231 is provided with a perforation 231d in this joint portion 231a; Can further stretch through out the perforation 231d of this rotating part 231 of these rotating shaft 232 1 ends, and can utilize as retaining elements such as cramp (not indicating) and be fixed, these rotating shaft 232 other ends are rotatably in conjunction with the articulated section 211 of this pedestal 21, and this articulated section 211 preferable this room 231c that are positioned at; This permanent magnet 233 is incorporated into the outer peripheral face of the side wall 231b of this rotating part 231, and this permanent magnet 233 is positioned at the containing hole 221a of this stator 22 and relative with this coil groups 222.
By the architectural feature of preceding taking off, the main feature of the inner rotor motor 2 of the utility model second embodiment includes at least: can be incorporated into the design of the side wall 231b of this rotating part 231 equally by this permanent magnet 233, with the whole axial height of this inner rotor motor 2 of effective reduction.In addition, because this rotating part 231 is a metal cap, therefore, this rotating part 231 can have an envelope magnetic action simultaneously, and can omit the envelope magnet ring 134 that is disclosed as first embodiment, forms with saving member, and reduces structure complexity; Moreover the perforation 231d of this rotating part a 231 because end of this rotating shaft 232 can stretch through is so an end of this rotating shaft 232 also can be conveniently in conjunction with a flabellum (the follow-up explanation of detailed ginseng), to promote ease of use and assembling convenience.
Please refer to shown in Figure 7ly, the inner rotor motor 3 of the utility model the 3rd embodiment comprises a pedestal 31, a stator 32 and a rotor 33, and wherein this pedestal 31 and stator 32 are identical with pedestal 11 and the stator 12 that first embodiment is disclosed, and holds and does not give unnecessary details.Therefore, the pedestal 31 of the utility model the 3rd embodiment can include articulated section 311, retainer ring 312 equally, detain and hold architectural features such as sheet 313, bearing 314 or wear plate 315; This stator 32 can include architectural features such as body 321, containing hole 321a, coil groups 322 equally, and this stator 32 also can be electrically connected one drive circuit 34.
The rotor 33 of the utility model the 3rd embodiment comprises a rotating part 331, a rotating shaft 332 and a permanent magnet 333.This rotating part 331 comprises a joint portion 331a and a side wall 331b, and this joint portion 331a periphery is provided with this side wall 331b, and this side wall 331b stretches to the containing hole 321a of this stator 32, and this side wall 331b is preferably a ring, so that around forming a room 331c; These rotating shaft 332 1 ends are in conjunction with the joint portion 331a of this rotating part 331, and the other end is rotatably in conjunction with the articulated section 311 of this pedestal 31, and this articulated section 311 preferable this room 331c that are positioned at; This permanent magnet 333 is incorporated into the outer peripheral face of the side wall 331b of this rotating part 331, and this permanent magnet 333 is positioned at the containing hole 321a of this stator 32 and relative with this coil groups 322.Again, this rotor 33 can be provided with an envelope magnet ring 334 in addition, when this rotating part 331 during with plastic material one ejection formation, the preferable one simultaneously of the side wall 331b of this rotating part coat this envelope magnet ring 334, so that utilize this envelope magnet ring 334 that this permanent magnet 333 1 envelope magnetic effects are provided.
By the architectural feature of preceding taking off, the main feature of the inner rotor motor 3 of the utility model the 3rd embodiment includes at least: can be incorporated into the design of the side wall 331b of this rotating part 331 equally by this permanent magnet 333, with the whole axial height of this inner rotor motor 3 of effective reduction.Moreover, but because the side wall 331b one of this rotating part 331 coats this envelope magnet ring 334, therefore, can guarantee that this envelope magnet ring 334 can not come off arbitrarily, to promote linking steady character.In addition, as shown in Figure 8, this envelope magnet ring 334 can form a protuberance 334a towards the end of this joint portion 331a, this protuberance 334a radially extends a preset distance towards the direction of this stator 32, whereby, this envelope magnet ring 334 can be contained this permanent magnet 333 more scopes, so that comparatively perfect envelope magnetic effect to be provided.
The inner rotor motor 1,2,3 that each embodiment of the utility model is disclosed can be used for various different cooling fan structures in addition, for example:
Please refer to shown in Figure 9, inner rotor motor 1 with first embodiment is an example, this pedestal 11 also can connect a fan frame 4 by several connectors 41 (as rib or stator blade etc.), and this pedestal 11 is positioned at this fan frame 4, and this fan frame 4 is provided with an air intake vent 42 and an air outlet 43; In addition, the rotating part 131 of this rotor 13 can radially extend several blades 5 towards this direction of fanning frame 4; Perhaps, the rotating part 131 preferable directions towards this fan frame 4 of this rotor 13 are radially extended a ringwall 131d, and these several blades 5 can be located at the outer peripheral face of this ringwall 131d, and this stator 12 can be between this ringwall 131d and this side wall 131b.Whereby, this radiator fan can be installed in various electronic installation or electronic instrument, and when these rotor 13 spinning movements, this blade 5 can be introduced air-flow from this air intake vent 42, and this air-flow is exported to a thermal source from this air outlet 43, to reach predetermined thermolysis.In addition, the utility model is not the purposes that the inner rotor motor 1 of only first embodiment can be used as radiator fan, other can form the radiator fan of same concept as shown in Figure 9 equally as the inner rotor motor 2,3 of second and third embodiment, but know the knowledgeable anticipator usually for having in this technical field, so must be covered by the radiator fan that the utlity model has inner rotor motor.
Please refer to shown in Figure 10ly, is example with the inner rotor motor 2 of second embodiment, and this rotating shaft 232 stretches through out the end of perforation 231d of this rotating part 231 can be directly in conjunction with a flabellum 6.Whereby, this radiator fan can be installed in various electronic installation or electronic instrument, and when these rotor 23 spinning movements, this flabellum 6 can drive air-flow to reach predetermined thermolysis.In addition, the utility model is not the purposes that the inner rotor motor 2 of only second embodiment can be used as radiator fan, other inner rotor motors 1,3 as the first and the 3rd embodiment also can be designed to make these rotating shaft 132,332 1 ends this rotating part 131,331 that stretches through out, whereby, can form the radiator fan of same concept as shown in figure 10 equally, but know the knowledgeable anticipator usually for having in this technical field, so must be covered by the radiator fan that the utlity model has inner rotor motor.
As mentioned above, the utility model inner rotor motor 1,2,3 and have the radiator fan of inner rotor motor 1,2,3, all can be incorporated into side wall 131b, the 231b of this rotating part 131,231,331, the structural design of 331b, this rotating shaft 132,232,332 need not be worn in conjunction with this permanent magnet 133,233,333 again by this permanent magnet 133,233,333; Whereby, can effectively reduce the length of this rotating shaft 132,232,332, and then reach the effect of the whole axial height of the radiator fan that can reduce this inner rotor motor 1,2,3 and have inner rotor motor 1,2,3.

Claims (20)

1. inner rotor motor is characterized in that comprising:
A pedestal has an articulated section;
A stator, in conjunction with this pedestal, this stator comprises a body and a coil groups, and this body is provided with a containing hole, and this coil groups is in conjunction with this body and around this containing hole; And
A rotor, comprise a rotating part, a rotating shaft and a permanent magnet, this rotating part comprises a joint portion and a side wall, this joint portion periphery is provided with this side wall, this side wall stretches to the containing hole of this stator, this rotating shaft one end is in conjunction with the joint portion of this rotating part, and the other end is in conjunction with the articulated section of this pedestal, and this permanent magnet is in conjunction with the outer peripheral face of the side wall of this rotating part and relative with this coil groups.
2. according to the described inner rotor motor of claim 1, it is characterized in that, be provided with an envelope magnet ring between the side wall of this permanent magnet and this rotating part.
3. according to the described inner rotor motor of claim 1, it is characterized in that this rotating part is a metal cap with envelope magnetic action.
4. according to the described inner rotor motor of claim 1, it is characterized in that the side wall one of this rotating part coats an envelope magnet ring.
5. according to the described inner rotor motor of claim 4, it is characterized in that this envelope magnet ring forms a protuberance towards an end of this joint portion, this protuberance radially extends towards the direction of this stator.
6. according to claim 1,2,3,4 or 5 described inner rotor motors, it is characterized in that the side wall of this rotating part is a ring, this ring is around forming a room, and the articulated section of this pedestal is positioned at this room.
7. according to 1,2,3,4 or 5 described inner rotor motors of claim the, it is characterized in that this rotating part is provided with a perforation in this joint portion, this perforation that stretches through out of this rotating shaft one end.
8. radiator fan with inner rotor motor is characterized in that comprising:
A fan frame is provided with an air intake vent and an air outlet;
A pedestal is positioned at this fan frame, and this pedestal has an articulated section, and this pedestal connects this fan frame with several connectors;
A stator, in conjunction with this pedestal, this stator comprises a body and a coil groups, and this body is provided with a containing hole, and this coil groups is in conjunction with this body and around this containing hole; And
A rotor, comprise a rotating part, a rotating shaft and a permanent magnet, this rotating part comprises a joint portion and a side wall, this joint portion periphery is provided with this side wall, this side wall stretches to the containing hole of this stator, and this rotating shaft one end is in conjunction with the joint portion of this rotating part, and the other end is in conjunction with the articulated section of this pedestal, this permanent magnet is in conjunction with the outer peripheral face of the side wall of this rotating part and relative with this coil groups, and the rotating part in this rotor is provided with several blades in addition.
9. according to the described radiator fan of claim 8, it is characterized in that, be provided with an envelope magnet ring between the side wall of this permanent magnet and this rotating part with inner rotor motor.
10. according to the described radiator fan of claim 8, it is characterized in that this rotating part is a metal cap with envelope magnetic action with inner rotor motor.
11., it is characterized in that the side wall one of this rotating part coats an envelope magnet ring according to the described radiator fan of claim 8 with inner rotor motor.
12., it is characterized in that this envelope magnet ring forms a protuberance towards an end of this joint portion according to the described radiator fan with inner rotor motor of claim 8, this protuberance radially extends towards the direction of this stator.
13., it is characterized in that the side wall of this rotating part is a ring according to claim 8,9,10,11 or 12 described radiator fans with inner rotor motor, this ring is around forming a room, the articulated section of this pedestal is positioned at this room.
14. according to claim 8,9,10,11 or 12 described radiator fans with inner rotor motor, it is characterized in that the rotating part of this rotor radially extends a ringwall towards the direction of this fan frame, these several blades are located at the outer peripheral face of this ringwall.
15. the radiator fan with inner rotor motor is characterized in that comprising:
A pedestal has an articulated section;
A stator, in conjunction with this pedestal, this stator comprises a body and a coil groups, and this body is provided with a containing hole, and this coil groups is in conjunction with this body and around this containing hole;
A rotor, comprise a rotating part, a rotating shaft and a permanent magnet, this rotating part comprises a joint portion and a side wall, this joint portion periphery is provided with this side wall, this side wall stretches to the containing hole of this stator, and this joint portion is provided with a perforation, and this rotating shaft one end is in conjunction with the joint portion of this rotating part and this perforation that stretches through out, the other end is in conjunction with the articulated section of this pedestal, and this permanent magnet is in conjunction with the outer peripheral face of the side wall of this rotating part and relative with this coil groups; And
A flabellum is incorporated into stretch through out an end of this perforation of this rotating shaft.
16. according to the described radiator fan of claim 15, it is characterized in that, be provided with an envelope magnet ring between the side wall of this permanent magnet and this rotating part with inner rotor motor.
17., it is characterized in that this rotating part is a metal cap with envelope magnetic action according to the described radiator fan of claim 15 with inner rotor motor.
18., it is characterized in that the side wall one of this rotating part coats an envelope magnet ring according to the described radiator fan of claim 15 with inner rotor motor.
19., it is characterized in that this envelope magnet ring forms a protuberance towards an end of this joint portion according to the described radiator fan with inner rotor motor of claim 15, this protuberance radially extends towards the direction of this stator.
20., it is characterized in that the side wall of this rotating part is a ring according to claim 15,16,17,18 or 19 described radiator fans with inner rotor motor, this ring is around forming a room, the articulated section of this pedestal is positioned at this room.
CN2009201673554U 2009-07-28 2009-07-28 Inner rotor motor and radiating fan with same Expired - Lifetime CN201490785U (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101969255B (en) * 2009-07-28 2012-07-04 建准电机工业股份有限公司 Inner rotor motor and radiator fan having same
TWI411200B (en) * 2010-07-12 2013-10-01 Sunonwealth Electr Mach Ind Co Motor and heat dissipating fan with the motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101969255B (en) * 2009-07-28 2012-07-04 建准电机工业股份有限公司 Inner rotor motor and radiator fan having same
TWI411200B (en) * 2010-07-12 2013-10-01 Sunonwealth Electr Mach Ind Co Motor and heat dissipating fan with the motor

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