CN102130541B - Hub motor - Google Patents
Hub motor Download PDFInfo
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- CN102130541B CN102130541B CN2010100007271A CN201010000727A CN102130541B CN 102130541 B CN102130541 B CN 102130541B CN 2010100007271 A CN2010100007271 A CN 2010100007271A CN 201010000727 A CN201010000727 A CN 201010000727A CN 102130541 B CN102130541 B CN 102130541B
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- bimetal leaf
- hub motor
- perforation
- sheet metal
- inwall
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Abstract
The invention discloses a hub motor. The hub motor comprises a mandrel, a shell, a first bimetallic strip and a second bimetallic strip. The shell is provided with an inner wall, a first through hole and a second through hole, wherein the first through hole and the second through hole are formed on the inner wall. The first bimetallic strip and the second bimetallic strip are arranged on the inner wall. The first end of the first bimetallic strip is warped with heating to expose the first through hole, and the second end of the second bimetallic strip is warped with heating to expose the second through hole. The orientation of the first end is substantially as same as the rotating direction of the shell, and the orientation of the second end is substantially opposite to the rotating direction of the shell.
Description
Technical field
The present invention relates to a kind of hub motor, and particularly relate to a kind of hub motor with bimetal leaf.
Background technology
Hub motor can be installed on the vehicle, and the shell that drives hub motor behind the galvanization rotates and then drive wheel.
The rotor of hub motor rotates by the electromagnetic induction between itself and the coil, and drives the shell rotation of hub motor.Has the gap between rotor and the coil.Generally speaking, gap better, the more power saving of little galvanomagnetic effect of healing.In addition, the inside of hub motor is close to sealing, and inner heat difficulty dissipates to the external world.When the temperature of electromagnet reached more than 150 ℃, the magnetic of electromagnet descended, and causes the electromagnetic induction between rotor and the coil to weaken.Therefore, the cooling mechanism of hub motor is quite important.
The cooling mechanism of hub motor often sees through and introduces the heat that extraneous air-flow is taken away hub motor inside at present.The flow path of extraneous air-flow how through the gap between rotor and the coil to take away the heat of coil and electromagnet.For guaranteeing radiating effect, the gap between rotor and the coil all makes greatlyr, makes more air-flow by taking away more heat.Yet, the large gap of healing cause galvanomagnetic effect poorer, more waste electric power.In addition, extraneous air-flow usually carries impurity, and those impurity easily attach on electromagnet and coil, makes between electromagnet and the coil to see through impurity generation friction phenomenon, has therefore reduced hub motor useful life.
Summary of the invention
The object of the present invention is to provide a kind of hub motor, see through the setting of bimetal leaf, when making hub motor inside reach predetermined temperature, bimetal leaf warpage and expose perforation dissipates to the external world with the heat production with hub motor inside.
For reaching above-mentioned purpose, according to an aspect of the present invention, a kind of hub motor is proposed.Hub motor comprises axle, shell, the first bimetal leaf, the second bimetal leaf, rotor set and stator pack.Shell has inwall, the first perforation and the second perforation, and the first perforation and the second perforation are located at inwall.The first bimetal leaf and the second bimetal leaf are located at inwall.The first end of the first bimetal leaf exposes the first perforation after being subjected to warpage, the second end of the second bimetal leaf exposes the second perforation after being subjected to warpage.Rotor set is fixedly arranged on shell and rotates to drive shell.Stator pack is located at axle.Wherein, the first end of the first bimetal leaf towards with the rotation direction of shell in fact in the same way, the second end of the second bimetal leaf towards reverse in fact with the rotation direction of shell.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperation accompanying drawing are described in detail below:
Description of drawings
Fig. 1 is the exploded view of the hub motor of first embodiment of the invention.
Fig. 2 is the first shell schematic diagram of watching toward direction V1 among Fig. 1;
Fig. 3 is along the cutaway view of direction 3-3 ' among Fig. 2;
Fig. 4 is the enlarged diagram of the first bimetal leaf of Fig. 3;
Fig. 5 is the schematic diagram of the fin of Fig. 1;
Fig. 6 is the vertical view of the fin of Fig. 5;
Fig. 7 is the fin of Fig. 5 and the assembling schematic diagram of axle;
Fig. 8 is the first shell partial schematic diagram of the hub motor of second embodiment of the invention;
Fig. 9 is the first shell schematic diagram of the hub motor of third embodiment of the invention;
Figure 10 is the first shell schematic diagram of the hub motor of fourth embodiment of the invention;
Figure 11 is the first shell schematic diagram of the hub motor of fifth embodiment of the invention.
Description of reference numerals
100: hub motor
102: axle
104,204,304,404,504: the first shells
106: rotor set
108: stator pack
110,510: inwall
112,512: the first perforations
114,514: the second perforations
116,516: the first bimetal leafs
116 ': the bimetal leaf reset condition
118,518: the second bimetal leafs
120,520: the three ends
122,522: first end
124,524: the four ends
126,526: the second ends
128: foreign steamer
130: electromagnet
132,180: fin
134: the three bimetal leafs
136: the four bimetal leafs
138: the three perforations
140: the four perforations
142: the seven ends
144: the five terminals
146: the eight ends
148: the six ends
150: the first sheet metals
152: the second sheet metals
162: second housing
164: endoporus
166: the lateral border face
168: groove
170,186,188,190: heat pipe
172: one ends
174: coil
176: silicon steel sheet
178: the other end
182: madial wall
184: the side
206: the first flexible members
A: amount of warpage
A1, A2, A3: angle
C1: pivot
C2: center
D2, D4, D6, D8: towards
DT: rotation direction
GC1, GC2: air-flow
H1, h2: thickness
S1, S2: space
T: thickness
V1: direction
Embodiment
Preferred embodiment is below proposed as explanation of the present invention, however the content that embodiment proposes, the usefulness for illustrating only, and the accompanying drawing of drawing illustrates for cooperating, and is not the usefulness as limit protection range of the present invention.Moreover the diagram of embodiment is also omitted unnecessary element, in order to clear demonstration technical characterstic of the present invention.
The first embodiment
Please refer to Fig. 1, it illustrates the explosive view according to the hub motor of first embodiment of the invention.Hub motor 100 comprises axle 102, the first shell 104, second housing 162, rotor set 106, fin 132,180 and stator pack 108.
Rotor set 106 comprises foreign steamer 128 and the array electric magnet 130 that silicon steel sheet is made, and electromagnet 130 is disposed at the madial wall of foreign steamer 128.Rotor set 106 and stator pack 108 be arranged coaxial in fact, after the first shell 104, stator pack 108 and rotor set 106 assemblings, and gap apart between the silicon steel sheet 176 of stator pack 108 and the electromagnet 130 of rotor set 106.
The foreign steamer 128 of rotor set 106 is fixedly arranged on the first shell 104, and the first shell 104 is fixedly arranged on second housing 162.Behind stator pack 108 galvanizations, rotor set 106 is because electromagnetic induction rotates, and drives the first shell 104 and second housing 162 rotates together.
The inwall 110 of contiguous the first shells 104 of fin 132 is located on the axle 102 and the inwall 110 of fin 180 contiguous second housings 162 is located on the axle 102.But the heat that produces behind fin 132 and 180 receiving coils, 174 galvanizations and with heat to flowing in the air, this will explain when mentioning fin in follow-up.
Please refer to Fig. 2, it illustrates the first shell schematic diagram of watching toward direction V1 among Fig. 1.The first shell 104 can utilize bearing to be installed in axle 102 and have the first perforation 112, the second perforation 114, the 3rd perforation 138 and the 4th perforation 140.The diameter of the first perforation 112, the second perforation 114, the 3rd perforation 138 and the 4th perforation 140 for example is 20 millimeters (mm), it runs through inwall 110, inside and the external world to be communicated with hub motor 100 make the heat of hub motor 100 inside dissipate to the external world by the first perforation 112, the second perforation 114, the 3rd perforation 138 and the 4th perforation 140.Below introduce further hub motor 100 and use the cooling mechanism of bimetal leaf.
The first bimetal leaf 116 has the 3rd corresponding end 120 and first end 122, the three ends 120 contiguous the first perforations 112 are fixedly arranged on inwall 110.The first bimetal leaf 116 optionally covers or exposes the first perforation 112, says further, and first end 122 exposes the first perforation 112 after being subjected to warpage.
The second bimetal leaf 118 has the 4th corresponding end 124 and the second end 126, the four ends 124 contiguous the second perforations 114 are fixedly arranged on inwall 110.The second bimetal leaf 118 optionally covers or exposes the second perforation 114, says further, and the second end 126 exposes the second perforation 114 after being subjected to warpage.
The 3rd bimetal leaf 134 has the 7th corresponding end 142 and five terminal 144, the seven ends 142 contiguous the 3rd perforations 138 are fixedly arranged on inwall 110.The 3rd bimetal leaf 134 optionally covers or exposes the 3rd perforation 138, says that further five terminal 144 exposes the 3rd perforation 138 after being subjected to warpage.
The 4th bimetal leaf 136 has the 8th corresponding end 146 and the 6th end 148, the eight ends 146 contiguous the 4th perforations 140 are fixedly arranged on inwall 110.The 4th bimetal leaf 136 optionally covers or exposes the 4th perforation 140, says further, and the 6th end 148 exposes the 4th perforation 140 after being subjected to warpage.
The mode that the 3rd end 120, the 4th end 124, the 7th end 142 and the 8th end 146 are fixedly arranged on the first shell 104 can be used welding and finish.
When the first shell 104 rotates, the inside of hub motor 100 produces heat, the first bimetal leaf 116, the second bimetal leaf 118, the 3rd bimetal leaf 134 and the 4th bimetal leaf 136 are subjected to warpage and expose respectively the first perforation 112, the second perforation 114, the 3rd perforation 138, the 4th perforation 140, make air-flow circulate in inside extraneous and hub motor 100 by the first perforation 112, the second perforation 114, the 3rd perforation 138, the 4th perforation 140, dissipate to the external world with the heat with hub motor 100 inside.
Say further, please continue with reference to Fig. 2, the first end 122 of the first bimetal leaf 116 towards the rotation direction DT of D2 and the first shell 104 in fact in the same way, and the rotation direction DT towards D4 and the first shell 104 of the second end 126 of the second bimetal leaf 118 is reverse in fact.Referring in fact in the same way towards the tangential velocity direction of D2 and first end 122 as haply in the same way towards D2 and rotation direction DT of above-mentioned first end 122.And the second end 126 refer in fact oppositely that towards D4 and rotation direction DT tangential velocity direction towards D4 and the second end 126 is for reverse haply.
Please refer to Fig. 3, it illustrates among Fig. 2 the cutaway view along direction 3-3 '.Make first end 122 warpages and expose the first perforation 112 when the first bimetal leaf 116 is heated, heat sees through air-flow GC1 and dissipates to the external world from the first perforation 112.Simultaneously, the second bimetal leaf 118 is heated and makes the second end 126 warpages and expose the second perforation 114, and extraneous air-flow GC2 flows in the first shell 104 from the second perforation 114.So, the inside of hub motor 100 can see through the first perforation 112 and the second perforation 114 and extraneous air-flow GC1, the GC2 of producing, with the inside of cooling hub motor 100.
Say that further as shown in Figure 3, when the first shell 104 rotated along rotation direction DT, space S 1 produced high pressure, and space S 2 produces low pressure.This high pressure makes air-flow GC1 flow from the inside of hub motor 100 toward extraneous direction, and the heat with the inside of hub motor 100 is carried into the external world simultaneously.Simultaneously, this low pressure makes the internal flow of air-flow GC2 from extraneous toward hub motor 100, and the air that ambient temperature is lower is brought the inside of hub motor 100 into simultaneously, and the inside of hub motor 100 is cooled off.
The five terminal 144 of the 3rd bimetal leaf 134 towards the rotation direction DT of D6 and the first shell 104 in fact in the same way, and the rotation direction DT towards D8 and the first shell 104 of the 6th end 148 of the 4th bimetal leaf 136 is reverse in fact.Referring in fact in the same way towards the tangential velocity direction of D6 and first end 144 as haply in the same way towards D6 and rotation direction DT of above-mentioned five terminal 144.And the 6th end 148 refer in fact oppositely that towards D8 and rotation direction DT tangential velocity direction towards D8 and the 6th end 148 is for reverse haply.The 3rd bimetal leaf 134, the 4th bimetal leaf 136, the 3rd perforation 138 and the 4th perforation 140 form the principle of air-flow similar in appearance to the formation principle of said flow GC1 and GC2, do not repeat them here.
In addition, preferably but non-exclusively, the first perforation 112, the second perforation 114, the 3rd perforation 138 and the 4th perforation 140 can be distributed in inwall 110, can make the heat of hub motor 100 inside dissipate to equably the external world.For instance, referring again to Fig. 2, the first perforation 112 and the second perforation 114 are with respect to included angle A 1 about 90 degree of pivot C1, the 3rd perforation 138 and the 4th perforation 140 are with respect to included angle A 2 about 90 degree of pivot C1, and the first bimetal leaf 116 and the 4th bimetal leaf 136 are with respect to included angle A 3 about 90 degree of pivot C1.So this is non-in order to limit present embodiment, implement in the aspect at another, the first bimetal leaf 116 is the first angle with the angle of the second bimetal leaf 118 relative pivot C1, and the angle of the 3rd bimetal leaf 134 and the 4th bimetal leaf 136 relative pivot C1 is the second angle, wherein, the first angle is different from the second angle.
In addition, can control by the warpage degree of controlling the first bimetal leaf 116 cooling performance of hub motor 100.Say further, please refer to Fig. 4, it illustrates the enlarged diagram of the first bimetal leaf of Fig. 3.The first bimetal leaf 116 comprises the first sheet metal 150 and the second sheet metal 152.The first sheet metal 150 has the first thermalexpansioncoefficientα 1, the second sheet metal 152 between the first sheet metal 150 and inwall 110 and has the second thermalexpansioncoefficientα 2.Wherein, the second thermalexpansioncoefficientα 2 is greater than the first thermalexpansioncoefficientα 1.For example, the material of the second sheet metal 152 can be the larger aluminum metal of the coefficient of expansion, and the material of the first sheet metal 150 can be the less dilval of the coefficient of expansion (invar).
When the first bimetal leaf 116 was not heated, the first sheet metal 150 is smooth inwall 110 roughly, shown in the reset condition 116 ' of Fig. 4.When the first bimetal leaf 116 was heated, the first bimetal leaf 116 was according to the deflection external form of following formula (1), (2) and (3) forming radius R.Material character and size according to radius R and the first bimetal leaf 116 just can calculate amount of warpage a.
ε＝(α2-α1)ΔT................(1)
In the following formula (1), Δ T is the temperature difference.In the following formula (2), E1 is the young's modulus (Young ' s Modulus) of the first sheet metal 150, and E2 is the young's modulus of the second sheet metal 152, and h1 is the thickness of the first sheet metal 150, and h2 is the thickness of the second sheet metal 152.See through and adjust parameter E1, E2, h1, h2, α 1 and α 2, just can obtain amount of warpage a in various degree, control thus the cooling performance of hub motor 100.
In addition, the second bimetal leaf 118 comprises the 3rd sheet metal (not illustrating) with the 3rd thermalexpansioncoefficientα 3 and the 4th sheet metal (not illustrating) with the 4th thermalexpansioncoefficientα 4.The 4th sheet metal is between the 3rd sheet metal and inwall.Wherein, the 4th thermalexpansioncoefficientα 4 is greater than the 3rd thermalexpansioncoefficientα 3.
The 3rd bimetal leaf 134 comprises the 5th sheet metal (not illustrating) with the 5th thermalexpansioncoefficientα 5 and the 6th sheet metal (not illustrating) with the 6th thermalexpansioncoefficientα 6.The 6th sheet metal is between the 5th sheet metal and inwall.Wherein, the 6th thermalexpansioncoefficientα 6 is greater than the 5th thermalexpansioncoefficientα 5.
The 4th bimetal leaf 136 comprises the 7th sheet metal (not illustrating) with the 7th thermalexpansioncoefficientα 7 and the 8th sheet metal (not illustrating) with the 8th thermalexpansioncoefficientα 8.The 8th sheet metal is between the 7th sheet metal and inwall.Wherein, the 8th thermalexpansioncoefficientα 8 is greater than the 7th thermalexpansioncoefficientα 7.
The design of the amount of warpage of above-mentioned the second bimetal leaf 118, the 3rd bimetal leaf 134 and the 4th bimetal leaf 136 just repeats no more at this similar in appearance to the design of the amount of warpage a of above-mentioned the first bimetal leaf 116.
In addition, please be simultaneously with reference to Fig. 5 and Fig. 6, Fig. 5 illustrates the schematic diagram of the fin of Fig. 1, and Fig. 6 illustrates the vertical view of the fin of Fig. 5.The material of fin 132 can be the good material of thermal conductivity, for example is aluminium or copper.
As shown in Figure 5, fin 132 adjacent inner wall 110 endoporus 164 and side 184 (side 184 is illustrated in Fig. 6) being located at axle 102 and having 12 grooves 168, lateral border face 166 and be connected.Side 184 connects lateral border face 166 and endoporus 164.Groove 168 is located at side 184 and is through to endoporus 164 from lateral border face 166, but still keeps the t of local thickness (being illustrated in Fig. 6).So this is non-in order to limit present embodiment, and in other enforcement aspect, groove 168 also can not be through to endoporus 164, namely can keep thickness between groove 168 and the endoporus 164, and expose opening in lateral border face 166.Perhaps, all keep thickness between groove 168 and the endoporus 164 and between groove 168 and the lateral border face 166.
Because the madial wall 182 (being illustrated in Fig. 6) of present embodiment groove 168 provides more area of dissipation, so but the heat of dissipation more wheels hub motor 100 inside.
Preferably, groove 168 can be towards inwall 110, the thermal convection distance between the perforation of shortening groove 168 and inwall 110.Right this is non-in order to limit present embodiment, and in implementing aspect, groove 168 is inwall 110 dorsad also.
Although the quantity of the groove 168 of present embodiment explains take 12 as example, the quantity of right groove 168 can differ from 12.For instance, in implementing aspect, the quantity of groove 168 can be 36, and its adjacent two angle is about 10 degree.Perhaps, the quantity of groove 168 can be other quantity, and its adjacent two angle also can be unequal.
Please refer to Fig. 7, it illustrates the fin of Fig. 5 and the assembling schematic diagram of axle.The explanation as an example of heat pipe 170 example, an end 172 of heat pipe 170 are given prominence to and are extended to the coil 174 of stator pack 108 from lateral border face 166 and be connected, and its other end 178 can be embedded in the fin 132.So, the heat of coil 174 can see through that heat pipe 170 promptly conducts to groove 168 and from the madial wall 182 (madial wall 182 is illustrated in Fig. 6) of groove 168 to flowing to the air.The annexation of remaining heat pipe and fin 132 does not repeat them here similar in appearance to heat pipe 170.
In addition, the structural similarity of fin 180 is in fin 132, and the annexation of fin 180 and stator pack 108 no longer repeats to give unnecessary details at this similar in appearance to the annexation of fin 132 with stator pack 108.
Although the hub motor 100 of present embodiment comprises fin 132 and 180, so this is non-in order to limit present embodiment.Another hub motor of implementing aspect can omit fin 132 and 180, only sees through above-mentioned bimetal leaf and still can dispel the heat to the inside of hub motor 100.
In addition, although diagram does not illustrate, the second housing 162 of right present embodiment has the 5th perforation, the 6th perforation, the 7th perforation and the 8th perforation and hub motor 100 also comprises the 5th bimetal leaf, the 6th bimetal leaf, the 7th bimetal leaf and the 8th bimetal leaf, its structure and annexation be the first perforation 112, the second perforation 114, the 3rd perforation 138, the 4th perforation 140, the first bimetal leaf 116, the second bimetal leaf 118, the 3rd bimetal leaf 134 and the 4th bimetal leaf 136 on the first shell 104 respectively, does not repeat them here.
The second embodiment
Please refer to Fig. 8, it illustrates the partial schematic diagram according to the first shell of the hub motor of second embodiment of the invention.Continue to use same numeral with the first embodiment something in common among the second embodiment, do not repeat them here.The second embodiment and the first embodiment difference are that the first shell 204 of the hub motor of the second embodiment also comprises the first flexible member 206, the second flexible member (not illustrating), the 3rd flexible member (not illustrating) and the 4th flexible member (not illustrating).Below describe in detail with regard to the first flexible member 206.
The first flexible member 206 connects the first bimetal leaf 116 and the first shell 204.When the temperature of hub motor inside is hanged down, the amount of warpage of the first bimetal leaf 116 is very little, so the first flexible member 206 stored elasticity potential energies are enough to make the first flexible member 206 to hold the first bimetal leaf 116, avoid the first bimetal leaf 116 to produce rocking or clash into the problem such as the first shell 204.
When the internal temperature of hub motor was higher, the strength that the first bimetal leaf 116 produces because of warpage was greater than the elastic force of the first flexible member 206, and therefore the first bimetal leaf 116 intactly exposes the first perforation 112 and start cooling and the heat sinking function of hub motor.
Say further, under the coefficient of elasticity that suitably designs the first flexible member 206 (springconstant), can control the unlatching opportunity of the first bimetal leaf 116, and then the cooling characteristics of control hub motor.
In addition, although Fig. 8 does not illustrate this second flexible member, the 3rd flexible member and the 4th flexible member, right this second flexible member connects the second bimetal leaf 118 and the first shell 204, the 3rd flexible member connects the 3rd bimetal leaf 134 and the first shell 204, the four flexible members connect the 4th bimetal leaf 136 and the first shell 204.The design of the spring constant of this second flexible member, the 3rd flexible member and the 4th flexible member just repeats no more at this similar in appearance to the first above-mentioned flexible member 206.
The 3rd embodiment
Please refer to Fig. 9, it illustrates the first shell schematic diagram according to the hub motor of third embodiment of the invention.Continue to use same numeral with the first embodiment something in common among the 3rd embodiment, do not repeat them here.The 3rd embodiment and the first embodiment difference be, the quantity of the perforation of the first shell 304 of the 3rd embodiment is that the quantity of the bimetal leaf of two and hub motor is two.
Say further, the hub motor of present embodiment omits the 3rd perforation 138, the 4th perforation 140, the 3rd bimetal leaf 134 and the 4th bimetal leaf 136 of the first embodiment, only keeps the first perforation 112, the second perforation 114, the first bimetal leaf 116 and the second bimetal leaf 118.
Although the quantity of the bimetal leaf of present embodiment only has two, right hub motor in the running, air-flow still can see through the first perforation 112 and the second perforation 114 circulate in inside extraneous and hub motor, dissipates to the external world with the heat with hub motor inside.The principle that this air-flow produces illustrates in Fig. 3, no longer repeats to give unnecessary details at this.
According to the principle that air-flow among Fig. 3 produces, the present embodiment deformability goes out multiple enforcement aspect, below wherein two kinds of explanations in the 4th embodiment and the 5th embodiment.
The 4th embodiment
Please refer to Figure 10, it illustrates the first shell schematic diagram according to the hub motor of fourth embodiment of the invention.Continue to use same numeral with the first embodiment something in common among the 4th embodiment, do not repeat them here.The 4th embodiment and the first embodiment difference are, the first shell 404 of the hub motor of present embodiment omits the second perforation 114, the 3rd perforation 138, the second bimetal leaf 118 and the 3rd bimetal leaf 134 of the first embodiment, only keeps the first perforation 112, the 4th perforation 140, the first bimetal leaf 116 and the 4th bimetal leaf 136.
The 5th embodiment
Please refer to Figure 11, it illustrates the first shell schematic diagram according to the hub motor of fifth embodiment of the invention.Continue to use same numeral with the first embodiment something in common among the 5th embodiment, do not repeat them here.The first shell 504 of the 5th embodiment has the first perforation 512 of relative configuration and the second perforation 514 and hub motor and comprises the first bimetal leaf 516 and the second bimetal leaf 518.
The first bimetal leaf 516 of hub motor and the second bimetal leaf 518 are with respect to about 180 degree of the angle of pivot C1.
The first bimetal leaf 516 and the second bimetal leaf 518 are located at the first shell 504, the first bimetal leafs 516 and are had the inwall 510 that the 3rd corresponding end 520 and first end 522, the three ends 520 contiguous the first perforations 512 are fixedly arranged on the first shell 504.The second bimetal leaf 518 has the 4th corresponding end 524 and the second end 526, the four ends 524 contiguous the second perforations 514 are fixedly arranged on inwall 510.The first end 522 of the first bimetal leaf 516 towards the rotation direction DT of D2 and the first shell 504 in fact in the same way, the rotation direction DT towards D4 and the first shell 504 of the second end of the second bimetal leaf 518 is reverse in fact.
The hub motor that the above embodiment of the present invention is disclosed sees through the setting of bimetal leaf, and when making hub motor inside reach predetermined high temperature, bimetal leaf warpage and expose perforation dissipates to the external world with the heat production with hub motor inside.In addition, hub motor also can comprise fin and heat pipe, with the heat production of dissipation more wheels hub motor inside.
In sum, although the present invention discloses as above with preferred embodiment, so it is not to limit the present invention.The persons of ordinary skill in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when looking appended being as the criterion that claim defines.
Claims (19)
1. hub motor comprises:
Axle;
Shell has inwall, the first perforation and the second perforation, and this first perforation and this second perforation are located at this inwall;
The first bimetal leaf is located at this inwall, and the first end of this first bimetal leaf exposes this first perforation after being subjected to warpage;
The second bimetal leaf is located at this inwall, and the second end of this second bimetal leaf exposes this second perforation after being subjected to warpage;
Rotor set is fixedly arranged on this shell and rotates to drive this shell; And
Stator pack is located at this axle;
Wherein, this first end of this first bimetal leaf towards with the rotation direction of this shell in fact in the same way, this second end of this second bimetal leaf towards reverse in fact with the rotation direction of this shell.
2. hub motor as claimed in claim 1, wherein this first bimetal leaf also has three end corresponding with this first end, and this second bimetal leaf also has four end corresponding with this second end;
Wherein, the 3rd end of this first bimetal leaf is fixedly arranged on this inwall, and the 4th end of this second bimetal leaf is fixedly arranged on this inwall.
3. hub motor as claimed in claim 1, wherein the angle with respect to a pivot is essentially 90 degree between this first perforation and this second perforation.
4. hub motor as claimed in claim 1, wherein the angle with respect to pivot is essentially 180 degree between this first perforation and this second perforation.
5. hub motor as claimed in claim 1, wherein this first bimetal leaf comprises:
The first sheet metal has the first thermal coefficient of expansion; And
The second sheet metal is connected in this first sheet metal and between this first sheet metal and this inwall and have the second thermal coefficient of expansion, wherein this second thermal coefficient of expansion is greater than this first thermal coefficient of expansion; And
This second bimetal leaf comprises:
The 3rd sheet metal has the 3rd thermal coefficient of expansion; And
The 4th sheet metal is connected in the 3rd sheet metal and between the 3rd sheet metal and this inwall and have the 4th thermal coefficient of expansion, wherein the 4th thermal coefficient of expansion is greater than the 3rd thermal coefficient of expansion.
6. hub motor as claimed in claim 5, wherein
The material of the material of this first sheet metal and the 3rd sheet metal is dilval, and the material of the material of this second sheet metal and the 4th sheet metal is aluminum metal.
7. hub motor as claimed in claim 1 also comprises:
The first flexible member connects this first bimetal leaf and this shell, and this first flexible member is in order to when this first bimetal leaf warpage, the storage elasticity potential energy; And
The second flexible member connects this second bimetal leaf and this shell, and this second flexible member is in order to when this second bimetal leaf warpage, the storage elasticity potential energy.
8. hub motor as claimed in claim 1, wherein this shell also has the 3rd perforation and the 4th perforation, and the 3rd perforation and the 4th perforation are located at this inwall, and this hub motor also comprises:
The 3rd bimetal leaf is located at this inwall, and the five terminal of the 3rd bimetal leaf exposes the 3rd perforation after being subjected to warpage;
The 4th bimetal leaf is located at this inwall, and the 6th end of the 4th bimetal leaf exposes the 4th perforation after being subjected to warpage;
Wherein, this five terminal of the 3rd bimetal leaf towards with the rotation direction of this shell in fact in the same way, the 6th end of the 4th bimetal leaf towards reverse in fact with the rotation direction of this shell;
Wherein, be essentially 90 degree with respect to the angle of pivot between the 3rd perforation and the 4th perforation, and the angle of relative this pivot is essentially 90 and spends between this first perforation and the 4th perforation.
9. hub motor as claimed in claim 8, wherein the 3rd bimetal leaf also has seven end corresponding with this five terminal, and the 4th bimetal leaf also has eight end corresponding with the 6th end;
Wherein, the 7th end of the 3rd bimetal leaf is fixedly arranged on this inwall, and the 8th end of the 4th bimetal leaf is fixedly arranged on this inwall.
10. hub motor as claimed in claim 8 also comprises:
The 3rd flexible member connects the 3rd bimetal leaf and this shell, and the 3rd flexible member is in order to when the 3rd bimetal leaf warpage, the storage elasticity potential energy; And
The 4th flexible member connects the 4th bimetal leaf and this shell, and the 4th flexible member is in order to when the 4th bimetal leaf warpage, the storage elasticity potential energy.
11. hub motor as claimed in claim 8, wherein the 3rd bimetal leaf comprises:
The 5th sheet metal has the 5th thermal coefficient of expansion; And
The 6th sheet metal is connected in the 5th sheet metal and between the 5th sheet metal and this inwall and have the 6th thermal coefficient of expansion, wherein the 6th thermal coefficient of expansion is greater than the 5th thermal coefficient of expansion; And
The 4th bimetal leaf comprises:
The 7th sheet metal has the 7th thermal coefficient of expansion; And
The 8th sheet metal is connected in the 7th sheet metal and between the 7th sheet metal and this inwall and have the 8th thermal coefficient of expansion, wherein the 8th thermal coefficient of expansion is greater than the 7th thermal coefficient of expansion.
12. hub motor as claimed in claim 1 also comprises:
Fin, contiguous this inwall arranges.
13. hub motor as claimed in claim 12, wherein this fin has a plurality of grooves and the endoporus that is connected and side;
Wherein, this fin is located at this axle with this endoporus, and described a plurality of grooves are located at this side.
14. hub motor as claimed in claim 13, wherein this fin also has the lateral border face, and this side connects this lateral border face and this endoporus, and described a plurality of grooves are through to this endoporus from this lateral border face.
15. hub motor as claimed in claim 12, wherein this stator pack comprises coil, and this hub motor also comprises:
Heat pipe, an end of this heat pipe is connected in this coil, and the other end of this heat pipe is connected in this fin.
16. hub motor as claimed in claim 13, wherein this stator pack comprises coil, and this hub motor also comprises:
Heat pipe, an end of this heat pipe is connected in this coil, and the other end of this heat pipe is imbedded in this fin from this lateral border face.
17. hub motor as claimed in claim 12, wherein this stator pack comprises coil, and this hub motor also comprises:
A plurality of heat pipes, an end of each described a plurality of heat pipe is connected in this coil, and the other end of each described heat pipe is connected in this fin;
Wherein, two in described a plurality of heat pipe are relatively configuration.
18. hub motor as claimed in claim 12, wherein the material of this fin is metal.
19. hub motor as claimed in claim 18, wherein the material of this fin is aluminium or copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100007271A CN102130541B (en) | 2010-01-15 | 2010-01-15 | Hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100007271A CN102130541B (en) | 2010-01-15 | 2010-01-15 | Hub motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102130541A CN102130541A (en) | 2011-07-20 |
| CN102130541B true CN102130541B (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100007271A Active CN102130541B (en) | 2010-01-15 | 2010-01-15 | Hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102130541B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249558A (en) * | 1998-09-28 | 2000-04-05 | 斯沃奇集团管理服务股份公司 | Liquid-cooled asynchronous dynamo |
| CN101253670A (en) * | 2005-08-31 | 2008-08-27 | 三菱电机株式会社 | Cooling device of electric motor for vehicle |
| CN201113684Y (en) * | 2007-06-29 | 2008-09-10 | 上海汉钟精机股份有限公司 | Screw rod refrigerating compressor electric motor cavity cooling loop structure |
| CN101946387A (en) * | 2008-03-03 | 2011-01-12 | 日产自动车株式会社 | Electric motor |
-
2010
- 2010-01-15 CN CN2010100007271A patent/CN102130541B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1249558A (en) * | 1998-09-28 | 2000-04-05 | 斯沃奇集团管理服务股份公司 | Liquid-cooled asynchronous dynamo |
| CN101253670A (en) * | 2005-08-31 | 2008-08-27 | 三菱电机株式会社 | Cooling device of electric motor for vehicle |
| CN201113684Y (en) * | 2007-06-29 | 2008-09-10 | 上海汉钟精机股份有限公司 | Screw rod refrigerating compressor electric motor cavity cooling loop structure |
| CN101946387A (en) * | 2008-03-03 | 2011-01-12 | 日产自动车株式会社 | Electric motor |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-170692A 1995.07.04 |
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| Publication number | Publication date |
|---|---|
| CN102130541A (en) | 2011-07-20 |
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