CN103928993A - Motor - Google Patents
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- CN103928993A CN103928993A CN201310643398.6A CN201310643398A CN103928993A CN 103928993 A CN103928993 A CN 103928993A CN 201310643398 A CN201310643398 A CN 201310643398A CN 103928993 A CN103928993 A CN 103928993A
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Abstract
The invention provides a motor which is provided with the components of: an outside component which has an approximately cylindrical inner circumferential surface around a central axis; an inside component which is arranged at a position that is radially closer to inside than the outside component and has an approximately cylindrical outer circumferential surface around the central axis; and a fixing component which is provided with a fixing part between the outside component and the inside component. The fixing part is provided with an outside contact part and two inside contact parts which are configured at two sides of the circumferential direction of the outside contact part, or is provided with an inside contact part and two outside contact parts which are configured at two sides of the circumferential direction of the inside contact part. The outside contact part contacts with the outside component, and the inside contact part contacts with the inside component. A radial compression stress is applied between the outside contact part and the inside contact part of the fixing part. Furthermore, at least one in the outside contact part and the inside contact part is inserted into the outside component or the inside component. As a result, relative movement between the outside component and the inside component is sustained.
Description
Technical field
The present invention relates to a kind of motor.
Background technology
In the past, motor had various cylindric and columned parts.And, these parts by being pressed into, the method such as bonding or shrink fit interfixes.For example, stator and casing, axle and rotor etc. interfix.
About motor in the past, for example, be recorded in TOHKEMY 2011-30303 communique.In the motor of TOHKEMY 2011-30303 communique, utilize binding agent fixed stator iron core and framework (0016 section).
Patent documentation 1: TOHKEMY 2011-30303 communique
Summary of the invention
Invent problem to be solved
In motor, between stator and rotor, produce circumferential torque.Therefore, stator and rotor and be fixed on stator and the miscellaneous part of rotor between effect have circumferential power.Therefore,, when fixing these parts, not only need to suppress axial coming off, and need to suppress circumferential rotation.
In being recorded in the motor of TOHKEMY 2011-30303 communique, at stator core, there is recess mutual opposed and that form and the snap-latch piece (0015 section, Fig. 1) engaging with these recesses with the opposed faces between framework.Thus, stator core is become with chassis configuration and cannot relatively rotate (0016 section).
But in the motor of this communique, snap-latch piece coordinates with binding agent and uses, rather than realize separately fixing.During snap-latch piece in this communique of independent use, although suppressed circumferential rotation, cannot suppress axial coming off.And, in the motor of this communique, only imagined the fixing means of bonding, imagination is not pressed into or other fixing meanss such as shrink fit.
The object of the present invention is to provide a kind of like this technology:, can use separately, and also can with bond, be pressed into, the various fixing meanss technology that be used in conjunction with, that each parts of motor are fixed such as shrink fit.
For solving the means of problem
The motor of illustrative the first invention of the application has: stationary part; And rotating part, it is supported to and can centered by the central axis of above downward-extension, rotates.Stationary part or rotating part have outside parts, inner part and fixed part.Outside parts have the roughly inner peripheral surface cylindraceous centered by central axis.Inner part is positioned at the position by radially inner side than outside parts, and has the roughly outer peripheral face cylindraceous centered by central axis.Fixed part has the fixed part being present between outside parts and inner part.Fixed part has an outside contact site and two inner side contact sites or has an inner side contact site and two outside contact sites.An outside contact site contacts with outside parts.Two inner side contact sites are configured in the circumferential both sides of outside contact site, and contact with inner part.Or an inner side contact site contacts with inner part.Two outside contact sites are configured in the circumferential both sides of inner side contact site, and contact with outside parts.Between the outside of fixed part contact site and inner side contact site, effect has compression stress radially.At least one in outside contact site and inner side contact site nipped outside in side component or inner part.
Invention effect
According to illustrative the first invention of the application, fixed part utilizes three above contact sites to contact with outside parts and inner part.Between the outside of fixed part parts and inner part, effect has compression stress radially.And the outside contact site of fixed part and at least one in the contact site of inner side are nipped outside in side component or inner part.
Consequently, can suppress axial and circumferential the relatively moving between outside parts and inner part.And fixed part of the present invention is each parts of fixing motor separately, and can with bond, be pressed into, other fixing meanss such as shrink fit are used in conjunction with.
Accompanying drawing explanation
Fig. 1 is the partial cross sectional view of the related motor of the first execution mode.
Fig. 2 is the longitudinal section of the related motor of the second execution mode.
Fig. 3 be the related motor of the second execution mode casing, stator core and fixed part dissect stereogram.
Fig. 4 is the partial perspective view of the related fixed part of the second execution mode.
Fig. 5 is the partial bottom view of the related fixed part of the second execution mode.
Fig. 6 is the partial cross sectional view of the related motor of the second execution mode.
Fig. 7 is the fragmentary perspective cross sectional view of casing, stator core and the fixed part of the related motor of the second execution mode.
Fig. 8 is the partial, longitudinal cross-sectional of casing, stator core and the fixed part of the related motor of the second execution mode.
Fig. 9 is the partial cross sectional view of the related motor of a variation.
Figure 10 is the partial cross sectional view of the related motor of a variation.
Figure 11 is the partial cross sectional view of the related motor of a variation.
Symbol description
1 motor;
2 stationary part;
3 rotating parts;
5,5A fixed part;
9 central axis;
21 casings;
Parts outside 21A, 21B, 21C, 21D;
22 caps;
23 stators;
31 axles;
32 rotors;
41 stator cores;
41A, 41B, 41C, 41D inner part;
42 insulating parts;
43 coils;
51,51A, 51B, 51C, 51D fixed part;
52 connecting portions;
60,60D gap;
61 inner recess;
61D outer recess;
62, the 62A portion of nipping;
63,63D side;
211 bottoms;
212 portions;
213 slot parts;
214 protuberances;
511, contact site outside 511A, 511B, 511C;
512, contact site inside 512A, 512B, 512C;
521 bends;
522 bending parts.
Embodiment
Below, with reference to accompanying drawing, the execution mode of illustration of the present invention is described.In addition, in this application, respectively the parallel direction of the central axis with motor is called to " axially ", the direction of the central axis quadrature with motor is called to " radially ", the direction of the circular arc along centered by the central axis of motor is called to " circumferentially ".And in this application, take is axially above-below direction, and with respect to the bottom of casing take rotor-side as on the shape of each several part and position relationship are described.But the definition of this above-below direction does not limit motor involved in the present invention direction in use.
And " the parallel direction " in the application also comprises the direction of almost parallel.And " direction of quadrature " in the application also comprises the roughly direction of quadrature.
<1. the first execution mode >
Fig. 1 is the partial cross sectional view of the related motor of the first execution mode.This motor has stationary part and rotating part, and described rotating part is supported to and can centered by the central axis of above downward-extension, rotates.And stationary part or rotating part have outside parts 21A, inner part 41A and fixed part 5A.
Outside parts 21A has the roughly inner peripheral surface cylindraceous centered by central axis.Inner part 41A is positioned at the position by radially inner side than outside parts 21A.And inner part 41A has the roughly outer peripheral face cylindraceous centered by central axis.
Fixed part 5A has the fixed part 51A being present between outside parts 21A and inner part 41A.Fixed part 51A has: two outside contact site 511A that contact with outside parts 21A; An and inner side contact site 512A who contacts with inner part 41A.Outside contact site 511A is configured in the circumferential both sides of inner side contact site 512A.
Between the outside of fixed part 51A contact site 511A and inner side contact site 512A, effect has compression stress radially.That is, from the outside contact site 511A of fixed part 51A laterally parts 21A apply the resistance towards radial outside.And, from the inner side contact site 512A of fixed part 51A to the inside parts 41A apply the resistance towards radially inner side.Thus, the contact-making surface between side component 21A and outside contact site 511A produces frictional force outside.Equally, the contact-making surface between inner part 41A and inner side contact site 512A produces frictional force.Consequently, suppressed axial and circumferential the relatively moving between outside parts 21A and inner part 41A.
And two outside contact site 511A nip respectively outside in side component 21A.The inner peripheral surface of side component 21A is formed with small recess outside, and the 62A of portion nips.The portion 62A of nipping be by from outside contact site 511A laterally the inner peripheral surface of parts 21A apply the power of radial outside, thereby the inner peripheral surface generation plastic deformation of outside parts 21A is formed.That is, outside contact site 511A is embedded in and nips in the 62A of portion, in the generation resistance radially between the 62A of portion and outside contact site 511A of nipping.
And, by being embedded in, outside contact site 511A nips in the 62A of portion, further suppressed axial and circumferential the relatively moving between outside parts 21A and fixed part 5A.
By said structure, suppressed axial and circumferential the relatively moving between outside parts 21A and inner part 41A.Fixed part 5A can fix separately outside parts 21A and inner part 41A.And, fixed part 5A also can with bond, be pressed into, other fixing meanss such as shrink fit are used in conjunction with.
<2. the second execution mode >
<2-1. the overall structure > of motor
Then, the second execution mode of the present invention is described.Fig. 2 is the longitudinal section of the related motor of present embodiment 1.
The motor 1 of present embodiment is installed in automobile, for generation of the actuating force of transfer.But motor 1 of the present invention also can be used for the device except automobile.
As shown in Figure 2, motor 1 has stationary part 2 and rotating part 3.
Stationary part 2 has casing 21, cap 22, stator 23, lower bearing portion 24, upper bearing (metal) portion 25 and fixed part 5.
Casing 21 is the roughly housings cylindraceous that have the end.And casing 21 accommodates stator 23 and rotor described later 32 in inside.Casing 21 has the bottom 211 of radially expansion and the 211 cylinder portions 212 of extending upward from bottom.Casing 21 is such as being made by metals such as aluminium.Cap 22 is radially expanded, and covers the opening on the top of casing 21.
Stator 23 is according to drive current, to produce the armature of magnetic flux.Stator 23 has stator core 41, insulating part 42 and a plurality of coil 43.
Stator core 41 consists of the stacked steel plate forming at electromagnetic steel plates such as axial stacked silicon steel plates.A plurality of teeth 412 that stator core 41 has circular iron core back 411 and gives prominence to from iron core back 411 to radially inner side.Iron core back 411 is fixed on the inner peripheral surface of the cylinder portion 212 of casing 21.Between stator core 41 and cylinder portion 212, have the fixed part 51 of fixed part 5 described later.About being fixed on below of stator core 41 and casing 21, narrate.
Insulating part 42 is by forming for the resin of insulator.The upper surface of each tooth, lower surface and circumferential both ends of the surface are covered by insulating part 42.Coil 43 consists of the wire that is wrapped in the surrounding of insulating part 42.
Lower bearing portion 24 and upper bearing (metal) portion 25 support axle 31 described later for rotating.The lower bearing portion 24 of present embodiment and upper bearing (metal) portion 25 are used and make outer ring and the counterrotating ball bearing of inner ring across spheroid.But, also can replace ball bearing with the bearing of other modes such as sliding bearing or FDB.
Fixed part 5 has the fixed part 51 being present between casing 21 and stator core 41.In this motor 1, by fixed part 51, improved the constant intensity between casing 21 and stator core 41.Detailed description about fixed part 5 is narrated in the back.
Rotating part 3 has axle 31 and rotor 32.
Axle 31 is the parts in the upwardly extending column of upper and lower along central axis 9.Between axle 31 and casing 21, have lower bearing portion 24, between axle 31 and cap 22, have upper bearing (metal) portion 25.Thus, axle 31 is supported to and can rotates with respect to stationary part 2.
Rotor 32 is fixed on axle 31.And rotor 32 is configured in the radially inner side of stator 23.Inside or outer peripheral face at rotor 32 maintain magnet 321.When motor 1 drives, by the flux interaction between magnet 321 and stator 23, produce circumferential torque.Thus, rotor 32 rotates centered by central axis 9.
<2-2. about the fixedly > of casing and stator core
Then, fixedly describing 41 of casing 21 and stator cores.Fig. 3 is the stereogram that dissects of the related casing of present embodiment 21, stator core 41 and fixed part 5.In Fig. 3, only illustrate near the top of stator core 41 and fixed part 5.And, in Fig. 3, in order to see internal state clearly, dissect and show stator core 41 and fixed part 5.Fig. 4 is the partial perspective view of fixed part 5.Fig. 5 is the partial bottom view of fixed part 5.Fig. 6 is the partial cross sectional view of casing 21, stator core 41 and fixed part 5.Fig. 7 is the fragmentary perspective cross sectional view of casing 21, stator core 41 and fixed part 5.Fig. 8 is the partial, longitudinal cross-sectional of casing 21, stator core 41 and fixed part 5.
As shown in FIG. 2 and 3, the cylinder portion 212 of casing 21 has the roughly inner peripheral surface cylindraceous centered by central axis 9.Stator core 41 is positioned at the position by radially inner side than cylinder portion 212, and has the roughly outer peripheral face cylindraceous centered by central axis 9.And the outer peripheral face of stator core 41 is fixed on the inner peripheral surface of the cylinder portion 212 of casing 21.That is, in the present embodiment, casing 21 is " outside parts ", and stator core 41 is " inner part ".
In the present embodiment, stationary magazine creel portion 212 and stator core 41 by shrink fit.That is, the inner peripheral surface of cylinder portion 212 contacts with the outer peripheral face of stator core 41.And stator core 41 has the inner recess 61 caving in to radially inner side from the outer peripheral face of stator core 41.Therefore, between inner recess 61 and the inner peripheral surface of cylinder portion 212, have gap 60.In the manufacture process of present embodiment, when cylinder portion 212 and stator core 41 are carried out to shrink fit, or after shrink fit, in gap 60, configure the fixed part 51 of fixed part 5 described later.
As shown in Figure 3, the fixed part 5 of present embodiment has three fixed parts 51 and the connecting portion 52 that is connected three fixed parts 51.Fixed part 5 is for example made by stainless steel.As shown in Figures 3 to 5, fixed part 5 thickness in the cross section with central axis 9 quadratures is that constant sheet material forms.But, because the thickness of the fixed parts such as tolerance 5 on manufacturing also can produce error a little.
Fixed part 51 is along circumferentially with arranged spaced about equally.In the present embodiment, fixed part 51 is three, but the invention is not restricted to this.Fixed part 51 can be both one or two, can be also more than four.As shown in FIG. 4 and 5, each fixed part 51 of present embodiment is towards the outstanding roughly V word shape of radially inner side in the cross section with central axis 9 quadratures.
Connecting portion 52 is by the top of each fixed part 51 along the band shape of roughly circumferentially extending.As previously mentioned, connecting portion 52 connects a plurality of fixed parts 51.Thus, even if in the situation that because some is former thereby cause a fixed part 51 in fixed part 51 to lose fastening force, also can prevent that fixed part 51 from coming off separately.And, owing to a plurality of fixed parts 51 can be configured in gap 60 simultaneously, the operating efficiency while therefore having improved assembling motor 1.
And connecting portion 52 is roughly circular-arc extension between a circumferential end and circumferential another end.That is,, during end on observation, connecting portion 52 is the roughly shape of C word shape.And as shown in Figure 7, connecting portion 52 is along the inner peripheral surface configuration of casing 21.As previously mentioned, in the manufacture process of motor 1, by shrink fit, fixedly after casing 21 and stator core 41, configuring fixed part 5.Now, on one side with the both ends of connecting portion 52 mutually close mode make connecting portion 52 bendings, on one side along the inner peripheral surface configuration fixed part 5 of casing 21.Thus, can suppress fixed part 5 contacts with the inner peripheral surface of casing 21.That is the workability while, having improved configuration fixed part 5.As present embodiment, when casing 21 has slot part 213 described later, this shape of connecting portion 52 is particularly useful.
As shown in FIG. 4 and 5, connecting portion 52 has bend 521 and bending part 522.Bend 521 is parts of the top that is positioned at fixed part 51 in connecting portion 52.The bottom of bend 521 is connected with the upper end of fixed part 51.And as shown in Figure 4, the circumferential both sides of the boundary member of fixed part 5 between the bottom of bend 521 and the upper end of fixed part 51 have otch 53.
As shown in Figure 5, a part for a part for bend 521 and fixed part 51 is at axial overlap.That is, a part for a part for bend 521 and fixed part 51 is to radially similarly crooked.And, fixed part 51 and connecting portion 52 staggering each other up and down at otch 53 when end on observation.That is, 52 parts at axial overlap of fixed part 51 and connecting portion are connected.Like this, by making fixed part 5 there is bend 521 and otch 53, improved the axial stress patience of the boundary member of 51 of bend 521 and fixed parts.And bend 521 has the elastic characteristic identical with fixed part 51.Thus, radially or circumferentially there is strain in fixed part 51.Now, there is strain in bend too, so fixed part 51 is easily out of shape.Thereby, easily fixed part 51 is configured in gap 60.
Bending part 522 is configured in the two ends of connecting portion 52, and is roughly C word sigmoid.In configuration during fixed part 5, can control bending part 522 and make connecting portion 52 deflections.Workability while thus, having improved configuration fixed part 5.
As shown in Figure 4, fixed part 51 has tapered portion 510 at the two ends radially of bottom.Thus, in the time of in fixed part 51 is configured in to gap 60, easily from gap, 60 top is inserted fixed part 51 downwards.That is the workability while, further having improved configuration fixed part 5.
As shown in Figure 6, the inner side contact site 512 that fixed part 51 has two outside contact sites 511 that contact with casing 21 and contacts with stator core 41.Two outside contact sites 511 are configured in the circumferential both sides of inner side contact site 512.
Between the outside of fixed part 51 contact site 511 and inner side contact site 512, effect has compression stress radially.That is, from outside contact site 511, to casing 21, apply the resistance towards radial outside.And, from inner side contact site 512, to stator core 41, apply the resistance towards radially inner side.Thus, the contact-making surface between casing 21 and outside contact site 511 produces frictional force.Equally, the contact-making surface between stator core 41 and inner side contact site 512 produces frictional force.Consequently, suppressed axial and circumferential the relatively moving between casing 21 and stator core 41.
And in the present embodiment, two outside contact sites 511 are circumferential both ends of fixed part 51.Two outside contact sites 511 are nipped respectively in the inner peripheral surface of casing 21.Inner peripheral surface at casing 21 is formed with small recess, the portion 62 of nipping.The portion 62 of nipping is by fixed part 51 is configured in gap 60, thereby the inner peripheral surface from outside contact site 511 to casing applies the power towards radial outside, and the inner peripheral surface generation plastic deformation of casing 21 is formed.That is, outside contact site 511 is embedded in the portion of nipping 62, produces resistance radially between the portion of nipping 62 and outside contact site 511.
And, by outside contact site 511 is embedded in the portion of nipping 62, further suppressed circumferential the relatively moving between casing 21 and fixed part 5.
Inner recess 61 has side 63 at its circumferential both ends.Side 63 in the cross section with central axis 9 quadratures along radial expansion roughly.The circumferential both ends of fixed part 51 contact with side 63 respectively.Thus, further suppressed circumferential the relatively moving between stator core 41 and fixed part 5.
As shown in Figure 7 and Figure 8, at least a portion of connecting portion 52 is configured in the upper surface of stator core 41.Thus, having suppressed stator core 41 relatively moves upward with respect to fixed part 5.That is, having suppressed stator core 41 relatively moves upward with respect to casing 21.
And as shown in Figure 7 and Figure 8, casing 21 has the slot part 213 of the ring-type caving in to radial outside from the inner peripheral surface of cylinder portion 212.At least a portion of slot part 213 is positioned at than stator core 41 top sides' position.And casing 21 also has the protuberance 214 from the inner peripheral surface of cylinder portion 212 to the outstanding ring-type of radially inner side.Protuberance 214 is adjacent with the upside of slot part 213.As shown in Figure 7, a part for the bending part 522 of fixed part 5 is configured in slot part 213.And a part for this bending part 522 of fixed part 5 is along the lower surface configuration of protuberance 214.Thus, having suppressed fixed part 5 is axially relatively moving with respect to casing 21.That is, further having suppressed stator core 41 is axially relatively moving with respect to casing 21.
In the present embodiment, by shrink fit and fixed part 5, fix cylinder portion 212 and stator core 41, but the invention is not restricted to this.Both can be only by fixed part 5 stationary magazine creel portions 212 and stator core 41, can be used together be again pressed into, other modes such as bonding fixing and fixing based on fixed part 5.
As previously mentioned, in the present embodiment, casing 21 is for example made of aluminum, and stator core 41 consists of silicon steel plate.The thermal coefficient of expansion of aluminium is larger than the thermal coefficient of expansion of silicon steel.At this, as previously mentioned, casing 21 and stator core 41 are carried out to shrink fit.Therefore,, when the temperature of motor 1 rises, the magnitude of interference of casing 21 and stator core 41 will diminish.That is,, when the temperature of motor 1 rises, the fastening force based on shrink fit of casing 21 and stator core 41 will diminish.But, owing to having fixed casing 21 and stator core 41 by fixed part 5, even if therefore at high temperature also there is enough fastening forces.
And, by be pressed into fixedly casing 21 and stator core 41 in the situation that, when the temperature of motor 1 rises, also likely between casing 21 and stator core, produce gap, thereby cause disappearing owing to being pressed into the fastening force of generation.But, if by fixed part 5 fixedly casing 21 and stator core 41, even if at high temperature also can keep fastening between casing 21 and stator core 41.
So,, in the situation that formation is different with the thermal coefficient of expansion of the material of formation inner part as the thermal coefficient of expansion of the material of the casing 21 of outside parts, it is very useful coordinating shrink fit or being pressed into and using fixed part of the present invention.
<3. variation >
Above, the execution mode of illustration of the present invention is illustrated, but the present invention is not limited to above-mentioned execution mode.
Fig. 9 is the partial cross sectional view of the related motor of a variation.In the example of Fig. 9, fixed part 51B is towards the outstanding roughly V word shape of radial outside in the cross section with central axis quadrature.That is two inner side contact site 512B that, fixed part 51B has an outside contact site 511B who contacts with outside parts 21B and contacts with inner part 41B.Two inner side contact site 512B are configured in the circumferential both sides of outside contact site 511B.And inner side contact site 512B is the circumferential both ends of fixed part 51B, and nips in inner part 41B.In the example of Fig. 9, also suppressed relatively moving between outside parts 21B and inner part 41B.
Figure 10 is the partial cross sectional view of the related motor of other variation.In the example of Figure 10, fixed part 51C is roughly N word sigmoid in the cross section with central axis quadrature.Therefore two inner side contact site 512C that, fixed part 51C has two outside contact site 511C that contact with outside parts 21C and contacts with inner part 41C.Two outside contact site 511C and two inner side contact site 512C are along circumferential alternate configurations.
An outside contact site 511C in two outside contact site 511C nips outside in side component 21C.Thus, suppressed circumferential the relatively moving between outside parts 21C and fixed part 51C.And an inner side contact site 512C in two inner side contact site 512C nips in inner part 41C.Thus, suppressed circumferential the relatively moving between inner part 41C and fixed part 51C.Therefore,, in the example of Figure 10, also suppressed relatively moving between outside parts 21C and inner part 41C.
Figure 11 is the partial cross sectional view of the related motor of other variation.In the example of Figure 11, the inner peripheral surface of outside parts 21D contacts with the outer peripheral face of inner part 41D.And outside parts 21D has the outer recess 61D of the depression from inner circumferential surface to radial outside.Thus, between outer recess 61D and the outer peripheral face of inner part 41D, have gap 60D.And, in the 60D of this gap, dispose fixed part 51D.In the example of Figure 11, also suppressed relatively moving between outside parts 21D and inner part 41D.
And the outer recess 61D of Figure 11 has side 63D at its circumferential both ends.And the circumferential both ends of fixed part 51D contact with side 63D respectively.Thus, further suppressed relatively moving between outside parts 21D and inner part 41D.
As previously discussed, fixed part at least has an outside contact site and two inner side contact sites or at least has an inner side contact site and two outside contact sites.And at least one in outside contact site and inner side contact site nipped outside in side component or inner part.
In addition, the circumferential both ends of fixed part needn't be necessarily and the contacts side surfaces of outer recess or inner recess.
And in the above-described embodiment, the shape of fixed part is roughly V word shape, but the invention is not restricted to this.The shape of fixed part can be also for example U-shaped roughly.
And in the above-described embodiment, outside parts are casing, inner part is stator core, but the invention is not restricted to this.Outside parts and inner part can be also the parts that belong to rotating part.For example, also outside parts are rotor, and inner part is axle, and passes through fixed part and fixed rotor and axle.
And in the above-described embodiment, the thermal coefficient of expansion of outside parts is larger than the thermal coefficient of expansion of inner part, but the invention is not restricted to this.Also can make the thermal coefficient of expansion of inner part larger than the thermal coefficient of expansion of outside parts.In this case, the fastening force between outside parts and inner part diminishes along with the temperature step-down of motor.But, as long as fix outside parts and inner part by fixed part, even fastening between parts and inner part outside also can keeping at low temperatures.
And, about the shape of the detailed part of each parts, also can be different from the shape shown in each accompanying drawing of the application.And, also each key element occurring in above-mentioned execution mode or variation can be carried out to suitable combination in the scope not conflicting.
Industrial utilizability
The present invention can be used in motor.
Claims (12)
1. a motor, it has:
Stationary part; And
Rotating part, it is supported to and can centered by the central axis of above downward-extension, rotates,
Described stationary part or described rotating part have:
Outside parts, it has the inner peripheral surface cylindraceous centered by described central axis;
Inner part, it is positioned at the position by radially inner side than described outside parts, and has the outer peripheral face cylindraceous centered by described central axis; And
Fixed part, it has the fixed part being present between described outside parts and described inner part,
Described fixed part has an outside contact site and two inner side contact sites, and a described outside contact site contacts with described outside parts, and described two inner side contact sites are configured in the circumferential both sides of described outside contact site and contact with described inner part;
Or, described fixed part has an inner side contact site and two outside contact sites, a described inner side contact site contacts with described inner part, and described two outside contact sites are configured in the circumferential both sides of described inner side contact site and contact with described outside parts
Between the described outside contact site of described fixed part and described inner side contact site, effect has compression stress radially,
At least one in described outside contact site and described inner side contact site nipped in described outside parts or described inner part.
2. motor according to claim 1,
The sheet material of described fixed part constant thickness in the cross section with described central axis quadrature forms.
3. motor according to claim 2,
Described fixed part is towards radially inner side or outstanding U-shaped or the V word shape of radial outside in the cross section with described central axis quadrature,
Nip outside in side component or inner part in the circumferential both ends of described fixed part.
4. according to the motor described in any one in claims 1 to 3,
The inner peripheral surface of described outside parts contacts with the outer peripheral face of described inner part,
And described motor also has at least one party in outer recess and inner recess, described outer recess caves in to radial outside from the inner peripheral surface of described outside parts, and described inner recess caves in to radially inner side from the outer peripheral face of described inner part,
Described fixed part is configured in the gap being present between described outer recess and described inner part, or is configured in the gap being present between described inner recess and described outside parts.
5. motor according to claim 4,
Described outer recess or described inner recess have side in its circumferential end,
Described side is radially expansion in the cross section with described central axis quadrature,
At least one end in the circumferential end of described fixed part and described contacts side surfaces.
6. motor according to claim 5,
Described outer recess or described inner recess have described side at its circumferential both ends,
The circumferential both ends of described fixed part respectively with described contacts side surfaces.
7. motor according to claim 1,
Described fixed part has a plurality of described fixed part and the connecting portion that is connected a plurality of described fixed parts along circumferential array.
8. motor according to claim 7,
Described connecting portion is the band shape that circumferentially extend on edge by the top of a plurality of described fixed parts,
The part of the top that is positioned at described fixed part in described fixed part and described connecting portion is to radially bending.
9. according to the motor described in claim 7 or 8,
Described stationary part has:
Stator, it has stator core; And
Casing, it holds at least a portion and the described stator of described rotating part at radially inner side,
Described outside parts are described casing,
Described inner part is described stator core,
At least a portion of described connecting portion is configured in the upper surface of described stator core.
10. motor according to claim 9,
Described casing has the slot part of the ring-type of depression from described inner peripheral surface to radial outside,
At least a portion of described slot part is positioned at the top of described stator core,
At least a portion of described connecting portion is configured in described slot part.
11. motors according to claim 7,
Described connecting portion is circular-arc extension between a circumferential end and circumferential another end.
12. motors according to claim 1,
The thermal coefficient of expansion of material that forms described outside parts is different from the thermal coefficient of expansion of material that forms described inner part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013004277A JP6075539B2 (en) | 2013-01-15 | 2013-01-15 | motor |
| JP2013-004277 | 2013-01-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103928993A true CN103928993A (en) | 2014-07-16 |
| CN103928993B CN103928993B (en) | 2017-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310643398.6A Active CN103928993B (en) | 2013-01-15 | 2013-12-03 | Motor |
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| Country | Link |
|---|---|
| JP (1) | JP6075539B2 (en) |
| CN (1) | CN103928993B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539070A (en) * | 2014-12-31 | 2015-04-22 | 布劳恩电梯有限公司 | Outer rotor tractor for elevator |
| CN105515230A (en) * | 2015-12-31 | 2016-04-20 | 北京金风科创风电设备有限公司 | Stator of generator |
| CN108565999A (en) * | 2018-01-03 | 2018-09-21 | 珠海凌达压缩机有限公司 | Electric machine assembly and compressor with it |
| CN111463921A (en) * | 2020-05-15 | 2020-07-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner with same |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110892610B (en) | 2017-06-14 | 2022-06-14 | 株式会社牧田 | Electric tool |
| JP7001372B2 (en) * | 2017-06-14 | 2022-01-19 | 株式会社マキタ | Electric tool |
| JP7103122B2 (en) | 2018-09-27 | 2022-07-20 | 株式会社デンソー | Rotating electric machine |
| JP7167849B2 (en) | 2019-05-21 | 2022-11-09 | 株式会社デンソー | stator assembly and motor |
| JP7226088B2 (en) | 2019-05-21 | 2023-02-21 | 株式会社デンソー | stator assembly and motor |
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| US1980026A (en) * | 1934-02-24 | 1934-11-06 | Gen Electric | Fabricated dynamo-electric machine |
| US3708707A (en) * | 1970-05-21 | 1973-01-02 | Bbc Brown Boveri & Cie | Frame and core-type dynamo-electric machine |
| US20060071574A1 (en) * | 2004-10-04 | 2006-04-06 | Stewart William P | End shields and stators and related methods of assembly |
| CN201860184U (en) * | 2010-11-30 | 2011-06-08 | 东方电气集团东方电机有限公司 | Pressing structure for permanent magnet generator stator core |
| DE102010063514A1 (en) * | 2010-12-20 | 2012-06-21 | Robert Bosch Gmbh | Electric machine with fastening device for magnets |
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| JPS5082303U (en) * | 1973-11-30 | 1975-07-15 | ||
| JPS6044449U (en) * | 1983-08-31 | 1985-03-28 | 三菱電機株式会社 | Magnetic pole fixing device for rotating electrical machines |
| JP2008113492A (en) * | 2006-10-30 | 2008-05-15 | Sanden Corp | Electric motor and electric compressor |
| JP2011067056A (en) * | 2009-09-18 | 2011-03-31 | Mitsuba Corp | Brushless motor |
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- 2013-01-15 JP JP2013004277A patent/JP6075539B2/en not_active Expired - Fee Related
- 2013-12-03 CN CN201310643398.6A patent/CN103928993B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1980026A (en) * | 1934-02-24 | 1934-11-06 | Gen Electric | Fabricated dynamo-electric machine |
| US3708707A (en) * | 1970-05-21 | 1973-01-02 | Bbc Brown Boveri & Cie | Frame and core-type dynamo-electric machine |
| US20060071574A1 (en) * | 2004-10-04 | 2006-04-06 | Stewart William P | End shields and stators and related methods of assembly |
| CN201860184U (en) * | 2010-11-30 | 2011-06-08 | 东方电气集团东方电机有限公司 | Pressing structure for permanent magnet generator stator core |
| DE102010063514A1 (en) * | 2010-12-20 | 2012-06-21 | Robert Bosch Gmbh | Electric machine with fastening device for magnets |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104539070A (en) * | 2014-12-31 | 2015-04-22 | 布劳恩电梯有限公司 | Outer rotor tractor for elevator |
| CN105515230A (en) * | 2015-12-31 | 2016-04-20 | 北京金风科创风电设备有限公司 | Stator of generator |
| CN108565999A (en) * | 2018-01-03 | 2018-09-21 | 珠海凌达压缩机有限公司 | Electric machine assembly and compressor with it |
| CN108565999B (en) * | 2018-01-03 | 2019-11-12 | 珠海格力电器股份有限公司 | Electric machine assembly and compressor with it |
| CN111463921A (en) * | 2020-05-15 | 2020-07-28 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor and air conditioner with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103928993B (en) | 2017-04-12 |
| JP2014138434A (en) | 2014-07-28 |
| JP6075539B2 (en) | 2017-02-08 |
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