CN109586514A - Motor and motor unit - Google Patents
Motor and motor unit Download PDFInfo
- Publication number
- CN109586514A CN109586514A CN201810907173.XA CN201810907173A CN109586514A CN 109586514 A CN109586514 A CN 109586514A CN 201810907173 A CN201810907173 A CN 201810907173A CN 109586514 A CN109586514 A CN 109586514A
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- CN
- China
- Prior art keywords
- peripheral surface
- motor
- casing
- inner peripheral
- internal diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
- H02K11/215—Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The present invention provides a kind of motor and motor unit.Motor includes: with the axis configured along central axis extended in the vertical direction and the rotor rotated around central axis；The stator opposite with rotor across gap radially；Casing with the cylindrical portion for surrounding stator from radial outside；And positioned at stator upside and cover cylindrical portion upside opening cover.Cover has cylindric cup portion 62.Cup portion 62 includes the first part in inner peripheral surface insertion external device (ED)；And it is embedded into the second part of the inner peripheral surface of casing in outer peripheral surface.First part is in staggered configuration in the axial direction with second part.
Description
Technical field
The present invention relates to motor and motor units.
Background technique
Disclose in Japanese Kokai 2012-90496 bulletin the shell main body by being fitted into fixing motor
Structure.On the other hand, the exploitation that control unit is installed on to the Electromechanically integrated motor unit of motor is being promoted.
In Electromechanically integrated motor, it is known to the horse of the cover of the opening of casing and covering casing with tubular
It reaches.In such motor, it may be considered that cover be arranged canister portion (cup portion 62), make the canister portion outer peripheral surface and casing it is interior
Circumferential surface is chimeric, and keeps control device chimeric with the inner peripheral surface of canister portion, thus constitutes motor unit.The case where using the structure
Under, radial inside and outside two faces of the canister portion of cover are chimeric surface.Therefore, inside and outside two faces are required to be fitted into required
Dimensional accuracy.Under normal circumstances, when through punch process forming tube portion, the size being difficult with high precision completes the interior of radial direction
Outer two faces.Therefore, it is impossible to the punch process high using production to the cover of above structure, there are the manufacture of cover at
Originally the problem of increasing etc.
Summary of the invention
In view of the above problems, the first purpose is to provide a kind of horse including following cover one embodiment of the present invention
It reaches, which has the cup portion 62 for being fitted into inner peripheral surface and outer peripheral surface and can be formed by punch process.
One mode of motor of the invention includes: rotor, is had along central axis extended in the vertical direction
The axis of configuration can be rotated around the central axis；Stator is opposite with the rotor across gap radially；Casing,
It has the cylindrical portion that the stator is surrounded from radial outside；And cover, it is located at the upside of the stator, described in covering
The opening of the upside of cylindrical portion.The cover has cylindric cup portion 62.The cup portion 62 includes outer in inner peripheral surface insertion
The first part of part device；And it is embedded into the second part of the inner peripheral surface of the casing in outer peripheral surface.The first part with
The second part is in staggered configuration in the axial direction.
It according to one method of the present invention, include indentation using when bearing retainer being assembled in casing in motor
Interference fit etc. with deformation it is chimeric in the case where, be able to suppress and the chimeric of another party affected.Also, motor list
Member can be improved bearing retainer relative to casing radial position precision and control device relative to bearing retainer
Radial position precision.
The present invention can be more clearly understood that referring to attached drawing by the detailed description of the preferred embodiment for the present invention below
Above-mentioned and other feature, element, step, features and advantages.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the motor unit of an embodiment.
Fig. 2 is the enlarged drawing of the region II-II of Fig. 1.
Fig. 3 is the bearing retainer (cover) of variation 1 and the partial enlarged view of casing.
Fig. 4 is the bearing retainer (cover) of variation 2 and the partial enlarged view of casing.
Fig. 5 is the cross-sectional view for the motor unit that sensor-magnet is installed on axis.
Specific embodiment
Hereinafter, being illustrated referring to attached drawing to motor involved in an embodiment and motor unit.In addition, following
In attached drawing, for easy understanding each structure, make sometimes actual structure from each structure scale bar and quantity etc. it is different.
Z axis is suitably shown in the various figures.If the Z-direction of each figure is flat with the axial direction of central axis J shown in FIG. 1
Capable direction.Also, the positive side of Z-direction (side+Z) in the following description, is referred to as " upside ", by the negative side (- Z of Z-direction
Side) it is referred to as " downside ".In addition, upside and downside are only intended to the direction of explanation, actual positional relationship and side are not limited
To.Also, under the premise of being not particularly illustrated, by the direction (Z-direction) parallel with central axis J be referred to as " axial direction " or
Radial direction centered on central axis J is referred to as " radial direction ", is by the circumferential direction centered on central axis J by " up and down direction "
Direction around the axis of central axis J is referred to as " circumferential direction ".Moreover, in the following description, " vertical view " refers to the shape from end on observation
State.
[motor unit]
Fig. 1 is the cross-sectional view of the motor unit 3 of present embodiment.
Motor unit 3 has motor 1, control device (external device (ED)) 4 and fixing bolt 5.Motor 1 and control device 4
It is fixed to each other using fixing bolt 5.Motor 1 has the connection terminal (illustration omitted) connecting with control device 4.Control device
4 supply power supply to motor 1 via control terminal, and control the rotation of motor 1.
[control device (external device (ED))]
Control device 4 has base portion 4a and protrusion 4b.
Round when base portion 4a is in from end on observation centered on central axis J.Base portion 4a has from axial sight
The lower surface 4e Chong Die with the flange part 19,45 of motor 1 is set to when examining.It is provided with circumferentially in the lower surface 4e of base portion 4a
The threaded hole 4f of arrangement.Inserted with fixing bolt 5 in threaded hole 4f.Control device is fixed on the flange part of motor 1 as a result,
19、45。
The downward pleurapophysis in the lower surface of protrusion 4b from base portion 4a goes out.Protrusion 4b is in cylindric centered on central axis J.
Protrusion 4b is contained in the inside of the casing 40 of motor 1.Protrusion 4b has the chimeric outer peripheral surface 4c towards outer circumferential.
[motor]
Motor 1 include: rotor 20 with axis 21, stator 30, casing 40, upside bearing (bearing) 6, lower side bearing 7 with
And bearing retainer (cover) 10.
[rotor]
Rotor 20 is rotated around central axis J.Rotor 20 has axis 21, rotor core 24 and rotor magnet 23.Axis 21 with
It is configured centered on the central axis J extended in (axial direction) in above-below direction along central axis J.Axis 21 is by lower 7 He of side bearing
The bearing of upside bearing 6 is that can rotate around the direction of the axis of central axis J.
Rotor core 24 is fixed on axis 21.Rotor core 24 circumferentially surrounds axis 21.Rotor magnet 23 is fixed on rotor iron
Core 24.Rotor core 24 and rotor magnet 23 are rotated together with axis 21.
[stator]
Stator 30 is opposite with rotor 20 across gap radially, and surrounds the radial outside of rotor 20.Stator 30 has
There are stator core 31, insulating part 32 and coil 33.Insulating part 32 is made of the material with insulating properties.The covering of insulating part 32 is fixed
At least part of sub- iron core 31.Coil 33 is made up of winding line astragal (illustration omitted).
[upside bearing and lower side bearing]
Upside bearing 6 can rotate the upper end bearing of axis 21.Upside bearing 6 is located at the upside of stator 30.Upside
Bearing 6 is held in bearing retainer 10.
Lower side bearing 7 can rotate the lower end bearing of axis 21.Lower side bearing 7 is located at the downside of stator 30.Downside
Bearing 7 is held in the downside bearing cage 48 of casing 40.
[casing]
Casing 40 is in the tubular being open to upside (side+Z).Casing 40 accommodates rotor 20 and stator 30.Casing 40 has
Cylindrical portion 44, flange part 45, bottom 43 and downside bearing cage 48.
Cylindrical portion 44 surrounds stator 30 from radial outside.Cylindrical portion 44 have the first cylinder portion 44a, cone cell canister portion 44b with
And the second cylinder portion 44c.The first cylinder portion 44a, cone cell canister portion 44b and the second cylinder portion 44c are successively arranged from the upper side to the lower side
Column.The first cylinder portion 44a, cone cell canister portion 44b and the second cylinder portion 44c are connected with roughly the same plate thickness along axial.
The first cylinder portion 44a is located at the upper end of cylindrical portion 44.The first cylinder portion 44a is centered on central axis J
Cylinder.In the first cylinder portion, the upper end of 44a is connected with flange part 45.
The second cylinder portion 44c is located at than at the position on the lower the first cylinder portion 44a.The second cylinder portion 44c is with center
Cylinder centered on axis J.The internal diameter of the second cylinder portion 44c is smaller than the internal diameter of the first cylinder portion 44a.In the second cylinder portion 44c
Inner peripheral surface be fixed with stator 30.Also, in the second cylinder portion, the inner peripheral surface of 44c is chimeric bearing retainer 10.
Cone cell canister portion 44b is presented axially between the first cylinder portion 44a and the second cylinder portion 44c, connects the first cylinder
Portion 44a and the second cylinder portion 44c.Cone cell canister portion 44b is tilted with from upside towards downside to radially inner side.
Flange part 45 is located at the upper end of cylindrical portion 44.Flange part 45 extends from the opening of cylindrical portion 44 to radial outside.?
Flange part 45 is provided with the first fixation hole 45a being inserted into for fixing bolt 5.
Bottom 43 is located at the lower end of cylindrical portion 44.Bottom 43 is located at the downside of stator 30.Bottom 43 covers cylindrical portion 44
The opening of downside.
Downside bearing cage 48 is located at the vertical view center of bottom 43.Downside bearing cage 48 carries out lower side bearing 7
It keeps.Downside bearing cage 48 includes the holding canister portion 48a axially extended centered on central axis J；And from holding
The lower end protruding portion 48b that the lower end of canister portion 48a extends to radially inner side.In lower end, the vertical view centre of protruding portion 48b is provided with
Hole portion 48c, hole portion 48c pass through along the lower end axially through and for axis 21.
[bearing retainer (cover)]
Bearing retainer 10 is located at the upside of stator 30.Bearing retainer 10 is fixed on the upside of the cylindrical portion 44 of casing 40
Opening.Bearing retainer 10 covers the opening of the cylindrical portion 44 of casing 40.Bearing retainer 10 props up upside bearing 6
It holds.(XY view) shape of the overlook view of bearing retainer 10 is for example in the round concentric with central axis J.
Bearing retainer 10 is made of metal.Bearing retainer 10 is by carrying out punch process to plate made of metal
And it forms.
Bearing retainer 10 has upside bearing maintaining part (bearing cage) 11, first flat part 12, rake 13, the
Two flat parts 14, cup portion 62 18 and flange part 19.Upside bearing maintaining part 11, the first flat part 12, rake 13, second are flat
Smooth portion 14, cup portion 62 18 and flange part 19 are arranged successively outward from radially inner side.
Upside bearing maintaining part 11 keeps upside bearing 6.Upside bearing maintaining part 11 is located at bearing retainer 10
Vertical view center.Upside bearing maintaining part 11 includes the holding canister portion 11a axially extended centered on central axis J；With
And the lower end protruding portion 11b extended from the lower end of holding canister portion 11a to radially inner side.Lower end protruding portion 11b is in the up-down direction
Upside bearing 6 is positioned.In lower end the vertical view centre of protruding portion 11b be provided with along axially through hole portion 11c.Hole portion
11c passes through axis 21 in inside.
First flat part 12 extends from the upper end of the holding canister portion 11a of upside bearing maintaining part 11 to radial outside.First
Flat part 12 extends along the plane vertical with central axis J.
Rake 13 extends from the outer rim of the first flat part 12 to radial outside.Rake 13 with towards radial outside and
It rolls downwards oblique.
Second flat part 14 extends from the outer rim of rake 13 to radial outside.Second flat part 14 along with central axis J
Vertical plane extends.
Flange part 19 is located at the outer rim of bearing retainer 10, extends from the upper end of cup portion 62 18 to radial outside.Bearing is protected
Hold frame 10 flange part 19 be located at casing 40 flange part 45 upside.That is, flange part 19 is be overlapped in the axial direction with flange part 45.
The upper surface of the flange part 45 of the lower surface and casing 40 of the flange part 19 of bearing retainer 10 contacts.It is provided in flange part 19
The second fixation hole 19a being inserted into for fixing bolt 5.
Cup portion 62 18 is in the cylindrical shape centered on central axis J.Cup portion 62 18 is opposite with cylindrical portion 44 radially.Lid
Canister portion 18 is connect in lower end with the second flat part 14.Also, cup portion 62 18 is connect in upper end with flange part 19.
Fig. 2 is the enlarged drawing of the region II-II of Fig. 1.
Cup portion 62 18 has first part 15, middle section 16 and second part 17.First part 15, middle section 16
And second part 17 is arranged successively from the upper side to the lower side.First part 15, middle section 16 and second part 17 are with substantially
Identical plate thickness is connected along axial.
First part 15 is located at the upper end of cup portion 62 18.First part 15 is the cylinder centered on central axis J.The
A part 15 has the first inner peripheral surface (inner peripheral surface) 15a towards radially inner side and the first outer peripheral surface towards radial outside (outer
Circumferential surface) 15b.
First inner peripheral surface 15a surrounds control device 4 from radial outside.Also, the first inner peripheral surface 15a and control device 4
Chimeric outer peripheral surface 4c is chimeric.That is, inner peripheral surface (the first inner peripheral surface 15a) embedded control system 4 of cup portion 62 18 in first part 15.
In addition, the lower end surface 4d of control device 4 is located at the position more upper than the lower end of first part 15.
First outer peripheral surface 15b is located at the radially inner side of the first cylinder portion 44a of casing 40.First outer peripheral surface 15b is in radial direction
On it is opposite with the inner peripheral surface 44aa towards radially inner side of the first cylinder portion 44a across gap.
In addition, in the present specification, " insertion " or " chimeric " refers between component, inner peripheral surface and outer peripheral surface between component
Circumferential at least part contact with each other, a side is positioned at another party radially.Also, it is described in this specification " embedding
The type of conjunction " can be clearance fit, be also possible to be interference fitted, or be also possible to transition fit.
In the present embodiment, first part 15 passes through using the first inner peripheral surface 15a as the punching press drawing process of size datum
And it forms.Therefore, the dimensional accuracy of the first inner peripheral surface 15a of first part 15 is higher than the dimensional accuracy of the first outer peripheral surface 15b.It is logical
First inner peripheral surface 15a of size datum when crossing as molding is used for the Qian He between control device 4, can be improved control
Radial position precision of the device 4 relative to bearing retainer 10.
Second part 17 is located at the lower end of cup portion 62 18.Second part 17 is the cylinder centered on central axis J.The
The internal diameter D17 of two parts 17 is smaller than the internal diameter D15 of first part 15.
Second part 17 has the second inner peripheral surface (inner peripheral surface) 17a towards radially inner side and second towards radial outside
Outer peripheral surface (outer peripheral surface) 17b.
Second outer peripheral surface 17b is surrounded from radial outside by the second cylinder portion 44c of casing 40.Also, the second outer peripheral surface 17b
It is chimeric with the inner peripheral surface 44ca towards radially inner side of the second cylinder portion 44c.That is, outer peripheral surface of the cup portion 62 18 in second part 17
(the second outer peripheral surface 17b) is embedded into a part (more specifically inner peripheral surface of the second cylinder portion 44c of the inner peripheral surface of casing
44ca)。
In the present embodiment, second part 17 passes through using the second outer peripheral surface 17b as the punching press drawing process of size datum
And it forms.Therefore, the dimensional accuracy of the second outer peripheral surface 17b of second part 17 is higher than the dimensional accuracy of the second inner peripheral surface 17a.It is logical
Second outer peripheral surface 17b of size datum when crossing as molding is used in the Qian He between the inner peripheral surface 44ca of casing 40,
It can be improved radial position precision of the bearing retainer 10 relative to casing 40.
Middle section 16 is presented axially between first part 15 and second part 17, connects first part 15 and second
Part 17.Middle section 16 is tilted with from upside towards downside to radially inner side.
Middle section 16 has the intermediate inner peripheral surface 16a towards radially inner side and the intermediate outer peripheral surface towards radial outside
16b.The intermediate outer peripheral surface 16b inner circumferential towards radially inner side across gap and with the cone cell canister portion 44b of casing 40 radially
Face 44ba is opposite.
According to the present embodiment, in the first part 15 of the first inner peripheral surface 15a embedded control system 4 and in the second outer peripheral surface
The second part 17 that 17b is embedded into the inner peripheral surface 44ca of casing 40 is in staggered configuration in the axial direction.Thereby, it is possible to make first part 15
And the chimeric surface of second part 17 is staggered in the axial direction, so as to pass through the punching press drawing process for carrying out independent process respectively
And accurately form respective chimeric surface.As a result, can be improved bearing retainer 10 relative to the radial of casing 40
The radial position precision of position precision and control device 4 relative to bearing retainer 10.
According to the present embodiment, since first part 15 and second part 17 are in staggered configuration in the axial direction, in conduct
First part 15 and second part 17 it is chimeric using interference fit comprising indentation etc. with deformation it is chimeric in the case where,
Either be able to suppress in the inner peripheral surface (the first inner peripheral surface 15a) and outer peripheral surface (the second outer peripheral surface 17b) of cup portion 62 18
It is chimeric that the chimeric of another party is affected.
According to the present embodiment, bearing retainer 10 has the flange extended from the upper end of first part 15 to radial outside
Portion 19.Cup portion 62 18 successively molds first part 15, middle section 16 and second part 17 by punch process.Cause
This, in forming the middle section 16 after first part 15 and the manufacturing procedure of second part 17, it is possible to make first
15 are divided to deform.By the way that flange part 19 is arranged in the upper end of first part 15, the rigidity of first part 15 can be improved.By
This, is able to suppress stress of the first part 15 when processing middle section 16 and second part 17 due to deforms, result
It is the dimensional accuracy that can be improved first part 15.
In addition, in the present embodiment, being located at the first part 15 of embedded control system 4 than being embedded into casing 40
The case where upper position of second part 17, is illustrated.But as shown in the variation of back segment 1 (referring to Fig. 3), insertion
The position more upper than being embedded with the first part 115 of control device 4 can also be located to the second part 117 in casing 40.
In this case, second part is improved by the way that the flange part 19 extended from the upper end of second part 117 to radial outside is arranged
117 rigidity, so as to deform due to inhibiting stress of the second part 117 when processing first part 115.
That is, as long as bearing retainer 10 has the side court positioned at upside from first part 15 and second part 17
The flange part 19 extended to radial outside.As a result, improve the upside that is located in first part 15 and second part 17
The rigidity of one side, so as to deform due to inhibiting the stress when processing another party.
According to the present embodiment, the internal diameter D15 of first part 15 and the internal diameter D17 of second part 17 are different, and first
Part 15 is connect with second part 17 by middle section 16.Since middle section 16 is along axial tapered extension, rigidity
It is high.Therefore, even if deform when chimeric either in first part 15 and second part 17, also can
It is enough to inhibit to bring its influence to another party side.
In the present embodiment, the internal diameter D15 of first part 15 is bigger than the internal diameter D17 of second part 17.Also, first
15 are divided to be located at the position more upper than second part 17.By being configured in first part 15 and second part 17 in upside
The biggish side of internal diameter, easily can form cup portion 62 18 by punch process.
Also, the internal diameter D15 of the first part 15 of control device 4 in the present embodiment, is embedded with than second part 17
Internal diameter D17 it is big.By using the structure of present embodiment, even if in the case where the diameter of the protrusion 4b of control device 4 is big,
Also protrusion 4b can be made to be contained in the inside of casing 40.
(variation 1)
Fig. 3 is the bearing retainer 110 and casing for showing the variation 1 that can be used in the above-described embodiment
140 partial sectional view.In addition, the constituent element to mode identical with above-mentioned embodiment marks identical symbol, save
Slightly its explanation.
The casing 140 of this variation have cylindrical portion 144, structure identical with above-mentioned embodiment flange part 45,
Bottom 43 and downside bearing cage 48 (referring to Fig.1).
The cylindrical portion 144 of this variation is the cylinder axially extended.Cylindrical portion 144 is prolonged with identical internal diameter along axial direction
It stretches.Flange part 45 is connected in the upper end of cylindrical portion 144.Cylindrical portion 144 has the inner peripheral surface 144a towards radially inner side.
The bearing retainer 110 of this variation has the flange of cup portion 62 118, structure identical with above-mentioned embodiment
Portion 19, upside bearing maintaining part 11, the first flat part 12, rake 13, the second flat part 14 and flange part 19 are (referring to figure
1)。
The cup portion 62 118 of this variation is in the cylindrical shape centered on central axis J.Cup portion 62 118 is in lower end and second
Flat part 14 connects.Also, cup portion 62 118 is connect in upper end with flange part 19.
Cup portion 62 118 has second part 117, middle section 116 and first part 115.Second part 117, centre
Part 116 and first part 115 are arranged successively from the upper side to the lower side.Second part 117, middle section 116 and first
115 are divided to be connected with roughly the same plate thickness along axial.
Second part 117 is located at the upper end of cup portion 62 118.Second part 117 is the circle centered on central axis J
Cylinder.Second part 117 has outside the second inner peripheral surface (inner peripheral surface) 117a towards radially inner side and second towards radial outside
Circumferential surface (outer peripheral surface) 117b.
Second inner peripheral surface 117a surrounds control device 4 from radial outside.Second inner peripheral surface 117a is radially across gap
And it is opposite with the chimeric outer peripheral surface 4c of control device 4.
Second outer peripheral surface 117b is surrounded from radial outside by the cylindrical portion 144 of casing 140.Also, the second outer peripheral surface 117b
It is chimeric with the inner peripheral surface 144a of cylindrical portion 144.That is, outer peripheral surface (second outer peripheral surface 117b) of the cup portion 62 118 in second part 117
It is embedded into the inner peripheral surface 144a of casing 140.
In this variation, second part 117 passes through using the second outer peripheral surface 117b as the punching press drawing process of size datum
And it forms.Therefore, dimensional accuracy of the dimensional accuracy of the second outer peripheral surface 117b of second part 117 than the second inner peripheral surface 117a
It is high.By being used in the second outer peripheral surface 117b of the size datum being used as when molding between the inner peripheral surface 144a of casing 140
It is chimeric, can be improved radial position precision of the bearing retainer 110 relative to casing 140.
First part 115 is located at the lower end of cup portion 62 118.First part 115 is the circle centered on central axis J
Cylinder.The internal diameter D115 of first part 115 is smaller than the internal diameter D117 of second part 117.First part 115 has towards radially inner side
The first inner peripheral surface (inner peripheral surface) 115a and the first outer peripheral surface (outer peripheral surface) 115b towards radial outside.
First inner peripheral surface 115a surrounds control device 4 from radial outside.Also, the first inner peripheral surface 115a and control device 4
Chimeric outer peripheral surface 4c it is chimeric.That is, cup portion 62 118 is embedded in control in the inner peripheral surface (the first inner peripheral surface 115a) of first part 115
Device 4.
First outer peripheral surface 115b is located at the radially inner side of the cylindrical portion 144 of casing 140.First outer peripheral surface 115b is radially
It is opposite with the inner peripheral surface 144a of cylindrical portion 144 across gap.
In this variation, first part 115 passes through using the first inner peripheral surface 115a as the punching press drawing process of size datum
And it forms.Therefore, dimensional accuracy of the dimensional accuracy of the first inner peripheral surface 115a of first part 115 than the first outer peripheral surface 115b
It is high.It, can by the way that the first inner peripheral surface 115a of the size datum being used as when molding is used in the Qian He between control device 4
Improve radial position precision of the control device 4 relative to bearing retainer 110.
Middle section 116 is presented axially between first part 115 and second part 117, connection first part 115 with
Second part 117.Middle section 116 is tilted with from upside towards downside to radially inner side.That is, middle section 116 is along axis
To tapered extension.
Middle section 116 has the intermediate inner peripheral surface 116a towards radially inner side and the intermediate outer peripheral surface towards radial outside
116b.Intermediate inner peripheral surface 116a is opposite with the chimeric outer peripheral surface 4c of control device 4 across gap radially.Also, it is intermediate
Outer peripheral surface 116b is opposite with the inner peripheral surface 144a of the cylindrical portion of casing 140 144 across gap radially.
According to this modification, in the first part 115 of the first inner peripheral surface 115a embedded control system 4 and in the second outer peripheral surface
The second part 117 for being embedded into the inner peripheral surface 144a of casing 140 at 117b is in staggered configuration in the axial direction.Thereby, it is possible to obtain with
The same effect of above-mentioned embodiment.That is, the chimeric surface of first part 115 and second part 117 can be made in the axial direction
It is staggered, so as to accurately mold respective chimeric surface by the punching press drawing process for carrying out independent process respectively.
Further, it is possible to which what is either inhibited in first part 115 and second part 117 chimeric brings shadow to the chimeric of another party
It rings.
In this variation, the internal diameter D117 of second part 117 is bigger than the internal diameter D115 of first part 115.Also, second
Part 117 is located at the position more upper than first part 115.That is, in this variation, first of embedded control system 4
Points 115 are located at than at the position on the lower of second part 117.By using the structure of this variation, in the protrusion of control device 4
In the axial biggish situation of length dimension of 4b, protrusion 4b can be made efficiently to be contained in the inside of casing 140.
(variation 2)
Fig. 4 is the bearing retainer 210 and casing for showing the variation 2 that can be used in the above-described embodiment
240 partial sectional view.In addition, the constituent element to mode identical with above-mentioned embodiment marks identical symbol, save
Slightly its explanation.
The casing 240 of this variation have cylindrical portion 244, structure identical with above-mentioned embodiment flange part 45,
Bottom 43 and downside bearing cage 48 (referring to Fig.1).
The cylindrical portion 244 of this variation has cylindrical portion 244b and the taper canister portion positioned at the upside of cylindrical portion 244b
244a.Boundary portion 244c between cylindrical portion 244b and taper canister portion 244a is located at the chimeric outer peripheral surface 4c's than control device 4
At the position of lower end on the lower.That is, the upper end of cylindrical portion 244b is located at the lower end of the chimeric outer peripheral surface 4c than control device 4 on the lower
At the position of side.
Cylindrical portion 244b is in the tubular centered on central axis J.Cylindrical portion 244b has the inner circumferential towards radially inner side
Face 244ba.
Taper canister portion 244a is between cylindrical portion 244b and flange part 45.The internal diameter of taper canister portion 244a is with from downside
Increase towards upside.Taper canister portion 244a can also be smoothly bent.
The bearing retainer 210 of this variation has the flange of cup portion 62 218, structure identical with above-mentioned embodiment
Portion 19, upside bearing maintaining part 11, the first flat part 12, rake 13, the second flat part 14 and flange part 19 are (referring to figure
1)。
The cup portion 62 218 of this variation is the cylinder centered on central axis J.Cup portion 62 218 is flat with second in lower end
Smooth portion 14 connects.Also, cup portion 62 218 is connect in upper end with flange part 19.
Cup portion 62 218 has first part 215 and second part 217.First part 215 and second part 217 are from upper
Lateral downside is arranged successively.Boundary portion 218a between first part 215 and second part 217 is located at control in the up-down direction
The lower end of the chimeric outer peripheral surface 4c of device 4 is the same as the boundary portion 244c between the cylindrical portion 244b and taper canister portion 244a of casing 240
Between.
First part 215 and second part 217 are connected with roughly the same plate thickness along axial.First part 215 and
Second part 217 has roughly the same internal diameter and outer diameter.In addition, the internal diameter and outer diameter of first part 215 and second
Divide 217 internal diameter and outer diameter not consistent in a strict sense.As be described hereinafter, the manufacture of first part 215 and second part 217
The face of size datum in process is different.Therefore, the internal diameter of the internal diameter and outer diameter Yu second part 217 of first part 215 with
And outer diameter becomes slightly different size.
First part 215 has the first inner peripheral surface (inner peripheral surface) 215a towards radially inner side and the towards radial outside
One outer peripheral surface (outer peripheral surface) 215b.The chimeric outer peripheral surface 4c of first inner peripheral surface 215a and control device 4 is chimeric.First outer peripheral surface
215b is opposite with the taper canister portion 244a of casing 240 across gap radially.
In this variation, first part 215 passes through using the first inner peripheral surface 215a as the punching press drawing process of size datum
And it forms.Therefore, dimensional accuracy of the dimensional accuracy of the first inner peripheral surface 215a of first part 215 than the first outer peripheral surface 215b
It is high.It, can by the way that the first inner peripheral surface 215a of the size datum being used as when molding is used in the Qian He between control device 4
Improve radial position precision of the control device 4 relative to bearing retainer 210.In the present embodiment, as shown in figure 5, horse
The sensor-magnet 181 for being installed on axis 21 is included up to unit 3；And the detector of the rotation position of detection sensor magnet 181
182.Sensor-magnet 181 and detector 182 are located at than at the position on the lower of control device 4.Detector 182 is radially
It is opposite with sensor-magnet 181.Detector 182 is installed on the bottom 43 of casing 40.For example, sensor-magnet 181 is circular
Magnet, magnetic pole successively changes in the circumferential.The magnetic pole of 182 detection sensor magnet 181 of detector with the rotation of axis 21 and
The variation of generation.Detector 182 has output terminal (not shown), and the rotary position information that output terminal will test out is output to
Control device 4.According to this structure, radial position precision of the bearing retainer 10 relative to casing 40, therefore its result are improved
It is the radial position precision also improved between the detector 182 and sensor-magnet 181 for the bottom 43 for being installed on casing 40.Its
As a result, it is possible to reduce the deviation that the position detection accuracy of detector 182 is generated by the manufacture deviation of motor unit 3.Thus,
Readily and stably carry out the rotation control of motor unit.
Second part 217 has the second inner peripheral surface (inner peripheral surface) 217a towards radially inner side and the towards radial outside
Two outer peripheral surfaces (outer peripheral surface) 217b.Second outer peripheral surface 217b is chimeric with the inner peripheral surface 244ba of cylindrical portion 244b of casing 240.
According to this modification, in the first part 215 of the first inner peripheral surface 215a embedded control system 4 and in the second outer peripheral surface
The second part 217 that 217b is embedded into the inner peripheral surface 244ba of the cylindrical portion 244b of casing 240 is in staggered configuration in the axial direction.As a result,
It can obtain effect same as above-mentioned embodiment.That is, the chimeric of first part 215 and second part 217 can be made
Face is staggered in the axial direction, accurately forms respective chimeric so as to carry out the punching press drawing process of independent process respectively
Face.Further, it is possible to which what is either inhibited in first part 215 and second part 217 chimeric brings the chimeric of another party
It influences.
More than, embodiments of the present invention and variation are illustrated, but in embodiment and variation
Each structure and their combination etc. be an example, be able to carry out the attached of structure without departing from the scope of spirit of the present invention
Add, omit, replacing and other are changed.Also, the present invention is limited not by embodiment.
Motor involved in an illustrative embodiment of the invention includes: rotor, is had along in above-below direction
The axis of the central axis configuration of upper extension, can rotate around central axis；Stator, radially across gap and with rotor phase
It is right；Casing has the cylindrical portion that stator is surrounded from radial outside；And cover, it is located at the upside of stator, covers tubular
The opening of the upside in portion, cover have cylindric cup portion 62, and cup portion 62 has the first of inner peripheral surface insertion external device (ED)
Partially and it is embedded into the second part of the inner peripheral surface of the casing in outer peripheral surface, first part is staggered in the axial direction with second part
Configuration.
In the motor involved in an illustrative embodiment of the invention, cover has from first part and the
The flange part that the upper end of the side positioned at upside in two parts extends to radial outside.
In the motor involved in an illustrative embodiment of the invention, the internal diameter of first part and second part
Internal diameter is different, and first part and second part are connected by the middle part along axial tapered extension.
In the motor involved in an illustrative embodiment of the invention, first part is located at more top than second part
At the position of side, the internal diameter of first part is bigger than the internal diameter of second part.
In the motor involved in an illustrative embodiment of the invention, second part is located at more top than first part
At the position of side, the internal diameter of second part is bigger than the internal diameter of first part.
In the motor involved in an illustrative embodiment of the invention, including the axis for that can rotate will be pivotally supported
It holds, cover is the bearing retainer supported to bearing.
Motor unit involved in an illustrative embodiment of the invention has above-mentioned motor and fills as outside
The control device set, control device control the rotation of motor.
Claims (8)
1. a kind of motor characterized by comprising
Rotor has the axis configured along central axis extended in the vertical direction, can rotate around the central axis；
Stator is opposite with the rotor across gap radially；
Casing has the cylindrical portion that the stator is surrounded from radial outside；And
Cover is located at the upside of the stator, covers the opening of the upside of the cylindrical portion,
The cover has cylindric cup portion 62,
The cup portion 62 includes
It can be in the first part of inner peripheral surface insertion external device (ED)；And
It is embedded into the second part of the inner peripheral surface of the casing in outer peripheral surface,
The first part is in staggered configuration in the axial direction with the second part.
2. motor according to claim 1, which is characterized in that
The cover has flange part, and the flange part is located at upside from the first part and the second part
A side upper end to radial outside extend.
3. motor according to claim 1 or 2, which is characterized in that
The internal diameter of the first part and the internal diameter of the second part are different,
The first part connect with the second part by the middle part along axial tapered extension.
4. motor according to claim 1 or 2, which is characterized in that
The first part is located at the position more upper than the second part,
The internal diameter of the first part is bigger than the internal diameter of the second part.
5. motor according to claim 1 or 2, which is characterized in that
The second part is located at the position more upper than the first part,
The internal diameter of the second part is bigger than the internal diameter of the first part.
6. motor according to claim 1 or 2, which is characterized in that
The motor include by the bearing being pivotally supported as that can rotate,
The cover is the bearing retainer supported to the bearing.
7. a kind of motor unit comprising:
Motor described in any one of claim 1 to 6；And
As the control device of the external device (ED),
The control device controls the rotation of the motor.
8. motor unit according to claim 7, which is characterized in that also include
Sensor-magnet is installed on axis；And
Detector detects the rotation position of the sensor-magnet,
The sensor-magnet and the detector are located at than at control device position on the lower,
The detector is opposite with the sensor-magnet radially, and is installed on the bottom of casing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017191286A JP2019068603A (en) | 2017-09-29 | 2017-09-29 | Motor and motor unit |
| JP2017-191286 | 2017-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109586514A true CN109586514A (en) | 2019-04-05 |
| CN109586514B CN109586514B (en) | 2021-08-31 |
Family
ID=65919662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810907173.XA Active CN109586514B (en) | 2017-09-29 | 2018-08-10 | Motor and motor unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019068603A (en) |
| CN (1) | CN109586514B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102020203279A1 (en) * | 2020-03-13 | 2021-09-16 | Robert Bosch Gesellschaft mit beschränkter Haftung | Drive device for an actuator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05292697A (en) * | 1992-04-08 | 1993-11-05 | Matsushita Electric Ind Co Ltd | Dc motor |
| JP2012090496A (en) * | 2010-10-22 | 2012-05-10 | Jtekt Corp | Motor and electrically driven power steering device |
| CN102763309A (en) * | 2010-03-19 | 2012-10-31 | 三菱电机株式会社 | Electric drive device and electric power steering device having same mounted therein |
| CN105827032A (en) * | 2015-01-26 | 2016-08-03 | 株式会社电装 | Rotating electrical machine |
| WO2016151816A1 (en) * | 2015-03-25 | 2016-09-29 | 三菱電機株式会社 | Electric motor and ventilation fan |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6179476B2 (en) * | 2014-07-31 | 2017-08-16 | 株式会社デンソー | DRIVE DEVICE AND ELECTRIC POWER STEERING DEVICE USING THE SAME |
| KR102355646B1 (en) * | 2015-06-04 | 2022-01-27 | 엘지이노텍 주식회사 | Motor |
-
2017
- 2017-09-29 JP JP2017191286A patent/JP2019068603A/en not_active Ceased
-
2018
- 2018-08-10 CN CN201810907173.XA patent/CN109586514B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05292697A (en) * | 1992-04-08 | 1993-11-05 | Matsushita Electric Ind Co Ltd | Dc motor |
| CN102763309A (en) * | 2010-03-19 | 2012-10-31 | 三菱电机株式会社 | Electric drive device and electric power steering device having same mounted therein |
| JP2012090496A (en) * | 2010-10-22 | 2012-05-10 | Jtekt Corp | Motor and electrically driven power steering device |
| CN105827032A (en) * | 2015-01-26 | 2016-08-03 | 株式会社电装 | Rotating electrical machine |
| WO2016151816A1 (en) * | 2015-03-25 | 2016-09-29 | 三菱電機株式会社 | Electric motor and ventilation fan |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109586514B (en) | 2021-08-31 |
| JP2019068603A (en) | 2019-04-25 |
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