CN205622411U - Motor and have electronic equipment of this motor - Google Patents
Motor and have electronic equipment of this motor Download PDFInfo
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- CN205622411U CN205622411U CN201620014137.7U CN201620014137U CN205622411U CN 205622411 U CN205622411 U CN 205622411U CN 201620014137 U CN201620014137 U CN 201620014137U CN 205622411 U CN205622411 U CN 205622411U
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Abstract
The utility model provides a motor and have electronic equipment of this motor. The motor has: the axle, the rotating part, a stator. Bearing portion and casing. The casing has casing section of thick bamboo portion. The casing covers the stator from the radial outside, and just the supporting is with the bearing portion of axle suspension for rotating. The rotating part has: the magnet holder, the rotor magnet, and gasket. The magnet holder has: magnet holder top, and magnet holder section of thick bamboo portion. The magnet holder is the stamping forming article. The rotor magnet is fixed in the outer peripheral face of magnet holder section of thick bamboo portion. The gasket has the opening in central authorities, just the gasket is fixed in the radial inboard of magnet holder section of thick bamboo portion. Magnet holder section of thick bamboo portion has: first internal diameter section of thick bamboo portion, and the second internal diameter section of thick bamboo portion of leaning on the axial downside than first internal diameter section of thick bamboo portion that is located. Internal diameter dimensionaal ratio second internal diameter section of thick bamboo portion of first internal diameter section of thick bamboo portion internal diameter size is little. Radial outer peripheral face of gasket and second internal diameter section of thick bamboo portion inner peripheral surface butt. The outer peripheral face butt of radial inner peripheral surface of gasket and axle.
Description
Technical field
This utility model relates to a kind of motor and has the electronic equipment of this motor.
Background technology
In the motor of inner-rotor type, it is known to the structure that a kind of outer peripheral face at rotor retainer fixes the rotor magnet of tubular.In the motor of such structure, exist because axiality or the vibration suppression of rotor magnet are deteriorated, sometimes result in the problem that the running accuracy of rotating part declines.
In recent years, along with the increase of various electronic equipments, the motor of people's increasingly demand height output and the higher motor of running accuracy.Wherein, in the motor of the inner-rotor type of height output, there is the tendency that the axial length of rotor magnet is elongated.But, if the length of rotor magnet, then axiality and the vibration suppression of the rotor retainer of fixed rotor Magnet is deteriorated.As a result of which it is, the axiality that there is rotor magnet declines, the worry that the running accuracy of motor declines.That is, the motor of the inner-rotor type of height output needs to reduce the motor of the structure of the axiality variation of rotor retainer and vibration.In conventional inner-rotor type motor, such as known a kind of peristome side inner peripheral surface at rotor retainer is fixed with the pad of split, thus improve the axiality of rotor retainer, reduce the structure (such as, Japanese Kokai 2005-253293 publication) of the vibration of rotor retainer.
But, in the case of further seeking for the running accuracy of rotating part, in the structure that this publication is recorded, sometimes due to the coaxial accuracy of rotor retainer is inadequate, it is impossible to the running accuracy required by realization.
Utility model content
The purpose of this utility model is to provide the motor that a kind of running accuracy is high.
The motor of an exemplary embodiment of the application has: axle；Rotating part；Stator；Bearing portion and casing.Axle extends along the rotation axis extended at above-below direction.Rotating part rotates together with the axis.Stator arrangement is in the radial outside of rotating part.Described axle is supported as rotating by bearing portion.Casing has casing cylinder portion.Casing cylinder portion is that tubular extends along rotation axis.Casing is from radial outside covering stator, and support shaft bearing portion.Rotating part has: Magnet retainer；Rotor magnet；And pad.Magnet retainer has: Magnet retainer top；And Magnet retainer cylinder portion.Magnet retainer top is towards the Directional Extension orthogonal with rotation axis.The Magnet retainer cylinder portion radial outside from Magnet retainer top extends towards axially downside.Magnet retainer is manufacturing press-molded products.Rotor magnet is fixed in the outer peripheral face in Magnet retainer cylinder portion.Pad has peristome in central authorities, and pad is fixed on the radially inner side in Magnet retainer cylinder portion.Magnet retainer cylinder portion has: the first internal diameter cylinder portion；And the second internal diameter cylinder portion, it is positioned at than the first internal diameter cylinder portion by the position of axially downside.First internal diameter cylinder portion internal diameter size is less than the second internal diameter cylinder portion internal diameter size.Pad outer radial periphery face abuts with the second internal diameter cylinder portion inner peripheral surface.
Pad radially inner circumference face abuts with the outer peripheral face of axle.
The axial length in the first internal diameter cylinder portion is more than the axial length in the second internal diameter cylinder portion.
The axial length of rotor magnet is more than the axial length in the second internal diameter cylinder portion.
The lower axial end of rotor magnet is positioned at the position leaning on axially upside than the upper axial end in described second internal diameter cylinder portion.
Motor also has the circuit board towards the Directional Extension orthogonal with rotation axis.Stator also has insulating part, and described insulating part has: cover portion, the upside end face of its covering stator；And substrate supporting portion, it is upwardly projecting towards axle from cover portion.Circuit board has the Hall element of the circumferential position of detection rotating part.In the position leaning on axially upside than Magnet retainer top, circuit board is held in the position the most opposed with Magnet retainer top by substrate supporting portion.
Rotating part also has sensor-magnet, and described sensor-magnet is positioned at the position leaning on axially downside than circuit board, and described sensor-magnet is the most opposed with Hall element.
The radial thickness in the first internal diameter cylinder portion is more than the radial thickness in the second internal diameter cylinder portion.
Pad has: bottom pad, and it is towards the Directional Extension orthogonal with rotation axis；And turn-up portion, its radial inner end bottom pad cylindrically extends towards axially downside.The inner peripheral surface of turn-up portion abuts with the outer peripheral face of axle.
There is bottom pad the most through pad through hole.
Pad through hole the most equally spaced configures.
The upper axial end of the upper axial end in pad outer radial periphery face and the second internal diameter cylinder portion inner peripheral surface is in the axial direction across gap configuration.
The oriented radially inner side of pad outer radial periphery mask opens pad notch part jaggy.Radial outer end and the second internal diameter cylinder portion inner peripheral surface of pad notch part do not contact.
In time radially observing, in the region that the second internal diameter cylinder portion is overlapping with pad outer radial periphery face, the second internal diameter cylinder portion has and opens the second internal diameter cylinder portion notch part jaggy from the second internal diameter cylinder portion inner circumferential towards radial outside.
Second notch part radially inner circumference face, internal diameter cylinder portion does not contacts with pad outer radial periphery face.
Magnet retainer cylinder portion has end difference, and described end difference connects the lower axial end of described first internal diameter cylinder portion inner peripheral surface and the upper axial end of described second internal diameter cylinder portion inner peripheral surface.The upper axial end in pad outer radial periphery face abuts in the axial direction with end difference.
The oriented radially inner side of pad outer radial periphery mask opens pad notch part jaggy.Radial outer end and the second internal diameter cylinder portion inner peripheral surface of pad notch part do not contact.The outside dimension of the radial outer end of pad notch part is less than the internal diameter size in the first internal diameter cylinder portion.
Pad outer radial periphery mask has multiple pad notch part.Multiple pad notch parts the most equally spaced configure.
Bearing portion also has: clutch shaft bearing；And second bearing.Clutch shaft bearing is positioned at the position leaning on axially downside than pad.Second bearing is positioned at the position leaning on axially upside than Magnet retainer top.Casing has: bottom of shell；And clutch shaft bearing maintaining part.The bottom of shell lower axial end from casing cylinder portion is radially oriented inner side and extends.Clutch shaft bearing maintaining part extends towards axially downside from the radial inner end of bottom of shell, and described clutch shaft bearing maintaining part keeps clutch shaft bearing.
The lower end of axle is more prominent towards axially downside than described casing.
Motor also has and is positioned at than casing cylinder portion by the cap of axially upside.Cap has: bottom cap；Cap cylinder portion；And second bearing cage.Extend towards with rotation axis generally perpendicular direction bottom cap.Cap cylinder portion radial outer end bottom cap extends towards axially downside in tubular.Second bearing cage radial inner end bottom cap extends towards axially upside in tubular, and described second bearing cage keeps the second bearing.
Electronic equipment has said motor.
An exemplary embodiment according to the application, it is possible to increase motor running accuracy.
Referring to the drawings and by the following detailed description to this utility model preferred implementation, above-mentioned and other feature of the present utility model, key element, step, feature and advantage can become more fully apparent.
Accompanying drawing explanation
Fig. 1 is the longitudinal section of the motor involved by the first embodiment.
Fig. 2 is the longitudinal section of the Magnet retainer involved by the first embodiment.
Fig. 3 is the longitudinal section of the pad involved by the first embodiment.
Fig. 4 is the sectional elevation of the stator core involved by the first embodiment.
Fig. 5 is the sectional elevation of the stator core involved by the second embodiment.
Fig. 6 is the sectional elevation of the stator core involved by the 3rd embodiment.
Fig. 7 is the longitudinal section of the motor involved by the 4th embodiment.
Fig. 8 is the upward view of the Magnet retainer involved by the 5th embodiment and pad.
Fig. 9 is the upward view of the Magnet retainer pad involved by the 6th embodiment.
Figure 10 is the upward view of the Magnet retainer involved by the 7th embodiment and pad.
Detailed description of the invention
Hereinafter, referring to the drawings exemplary embodiment of the present utility model is illustrated.It addition, in this application, respectively the direction with the centerline axis parallel of motor is referred to as " axially ", the direction orthogonal with the central axis of motor is referred to as " radially ", the direction along the circular arc centered by the central axis of motor is referred to as " circumferential ".Further, in this application, using axially as upper and lower always shape and position relationship to each several part illustrate.But, be not intended to the definition by this above-below direction limit the motor involved by this utility model in use towards.
<1. the first embodiment>
<overall structure of 1-1. motor>
Fig. 1 is the longitudinal section of the motor 12 involved by the first embodiment of the present utility model.As it is shown in figure 1, motor 12 has: stationary part 2；Rotating part 3；And bearing portion 4.Stationary part 2 is the most static relative to the electronic equipment being equipped with motor 12.Rotating part 3 is supported to rotate centered by rotation axis 9 relative to stationary part 2.
The stationary part 2 of present embodiment has: casing 21；Cap 22；Stator 23；And circuit board 24.
Casing 21 has: bottom of shell 211；Casing cylinder portion 212；And clutch shaft bearing maintaining part 213.Casing cylinder portion 212 extends along rotation axis 9 in tubular.The bottom of shell 211 lower axial end from casing cylinder portion 212 is radially oriented inner side and extends, and clutch shaft bearing maintaining part 213 extends towards axially downside from the radial inner end of bottom of shell 211, and clutch shaft bearing maintaining part 213 keeps clutch shaft bearing 41.That is, the bottom of shell 211 lower axial end from casing cylinder portion 212 is radially oriented inner side extension.Clutch shaft bearing maintaining part 213 extends towards axially downside from the radial inner end of bottom of shell 211.According to this structure, by configuring clutch shaft bearing 41 than pad 34 by the position on the downside of axially, the assembling of motor 12 becomes easy.Casing 21 is from radial outside covering stator 23, and casing 21 supports and axle 31 supports the bearing portion 4 for rotating.
Cap 22 is positioned at the position leaning on axially upside than casing cylinder portion 212.Further, cap 22 has: bottom the cap extended with rotation axis 9 generally perpendicular direction 221；Bottom cap, the radial outer end of 221 is towards the cap cylinder portion 222 that axially downside extends in tubular；And the radial inner end of 221 extends towards axially upside in tubular bottom cap, and keep the second bearing cage 223 of the second bearing 42.According to this structure, due to bearing portion 4 by casing 21 with cap 22 with the state support of two supports, therefore improve the running accuracy of rotating part 3.
Inner containment at the housing being made up of casing 21 and cap 22 has: stator 23；Circuit board 24 at least some of；The aftermentioned Magnet retainer 32 of rotating part 3；Rotor magnet 33；And pad 34.Casing 21 and cap 22 are such as formed by galvanized steel plain sheet, rustless steel etc..The casing 21 of present embodiment is formed from the same material with cap 22, but casing 21 also can be formed by different materials from cap 22.
Stator 23 is the armature being made up of stator core 231, insulating part 232 and coil 233.Stator 23 is configured at the radial outside of rotating part 3.
The stacked steel plate that stator core 231 is formed by electromagnetic steel plates such as stacking silicon steel plates vertically is formed.Stator core 231 has circular core-back 51 and is radially oriented multiple teeth 52 protruding outside from core-back 51.The outer peripheral face of core-back 51 is fixed on the inner peripheral surface in casing cylinder portion.Multiple teeth 52 are spaced with roughly equal in the circumferential.
Insulating part 232 is the resinous parts of the part on the surface of covering stator iron core 231.The insulating part 232 of present embodiment has: the cover portion 61 of the upper side end face of covering stator iron core 231；And from cover portion 61 towards upwardly projecting substrate supporting portion 62.Substrate supporting portion 62 has relative to the most prominent claw 621.
Coil 233 is installed on each tooth 52 around across insulating part 232.Coil 233 is made up of the wire being wound in each tooth 52 across insulating part 232.
Circuit board 24 provides to the coil 233 of stator 23 and drives electric current.The circuit board 24 of present embodiment is configured at the inside in the space surrounded by casing 21 and cap 22.Further, circuit board 24 in the upside of stator core 231 towards with rotation axis 9 Directional Extension generally perpendicularly.That is, circuit board 24 is towards the Directional Extension being substantially orthogonal with rotation axis 9.The face of the upper side of circuit board 24 is configured at the position of the side by the top, upper side end than casing 21.Thus, in manufacturing process, even if after the assembling of casing 21 and stator 23 terminates, also easily the electronic circuit of circuit board 24 is carried out soldering operation.It is to say, improve manufacture efficiency.
In the position leaning on axially upside than Magnet retainer top 321, the circuit board 24 of present embodiment is snap-fitted by the substrate supporting portion 62 with insulating part 232, and is fixed on the position the most opposed with Magnet retainer top 321.That is, circuit board 24 and the claw 621 in substrate supporting portion 62 are by snap-fitted and be fixed together.According to this structure, compared with the situation at the axially downside configuration circuit board 24 of Magnet retainer 32, owing to shortening the axial distance between rotating part 3 and circuit board 24, it is possible to increase detected the accuracy of detection of the position of rotation of rotating part 3 by Hall element 240.
The preferably stacking thickness of stator core 231, the number change corresponding with the application target of motor 12 of the electromagnetic steel plate i.e. constituting stator core 231.
But, this utility model circuit board 24 has multiple Hall elements 240 of the circumferential position of detection rotating part 3.Thus, detect the circumferential position of rotating part 3 by Hall element 240 and feed back, it is possible to the driving carrying out motor 12 rightly controls.Therefore, if making the constant distance between the upper surface of circuit board 24 and stator core 231, then circuit board 24 changes with the relative position of rotor magnet 33, it is difficult to detect the position of rotor magnet 33 exactly.
Further, if making the constant distance between the upper surface of circuit board 24 and stator core 231, and if by the stacking lower thickness of stator core 231, then the upper surface of circuit board is configured at the position on the lower, upper end than casing 21.So, it is difficult to the electronic circuit of circuit board 24 is carried out the operations such as soldering.
In the present embodiment, owing to insulating part 232 has a substrate supporting portion 62, therefore no matter circuit board 24 how, can be remained constant relative to the position of rotor magnet 33 and casing 21 by the stacking thickness of stator core 231.Therefore, it is possible to remain constant by the distance being installed between the Hall element of circuit board 24 and rotor magnet 33, thus do not interfere with the accuracy of detection of the circumferential position of Hall element detection rotor magnet 33.Further, the efficiency of the operation that the circuit on circuit board 24 carries out soldering also will not reduce.It addition, rotating part 3 can also have is positioned at the position leaning on axially downside than circuit board 24, and the sensor-magnet the most opposed with Hall element 240.Thereby, it is possible to the sensor-magnet detected by Hall element 240 is formed with rotor magnet 33 split, therefore, it is possible to further expand the width of design.
Further, the cap cylinder portion 222 of the cap 22 of present embodiment has external connecting 220.External connecting 220 is the breach in the most through cap cylinder portion 222.Cap contact site 71 is respectively arranged on the position different from external connecting 220 in the circumferential.The wire (not shown) being connected with circuit board 24 it is configured with in external connecting 220.Additionally, it is possible in external connecting 220, configure a part or the adapter of circuit board 24.
Further, external connecting 220 is alternatively the hole in the most through cap cylinder portion 222.
Consequently, it is possible to by circuit board 24 being electrically connected with external device (ED) by external connecting 220, it is possible to the driving electric current driven required for motor 12 is provided to circuit board 24.
Fig. 2 is the longitudinal section of the Magnet retainer 32 involved by the first embodiment of the present utility model, and Fig. 3 is the longitudinal section of the pad 34 involved by the first embodiment of the present utility model.Referring to figs. 1 through Fig. 3, the rotating part 3 of present embodiment has: axle 31；Magnet retainer 32；Rotor magnet 33；And pad 34.Rotating part 3 rotates together with axle 31.Saying in further detail, rotating part 3 rotates around rotation axis 9 together with axle 31.
Axle 31 extends along the rotation axis 9 extended at above-below direction.The material of axle 31 such as uses the metals such as rustless steel.Axle 31 is supported by bearing portion 4, and rotates centered by rotation axis 9.The lower end of axle 31 is more prominent towards axially downside than casing 21.According to this structure, it is possible to provide driving force by the axle 31 more prominent towards axially downside than casing 21 to various electronic equipments.
Magnet retainer 32 is the metal manufacturing press-molded products rotated together with axle 31.Magnet retainer 32 has: towards the Magnet retainer top 321 of the Directional Extension orthogonal with rotation axis 9；And the radial outside from Magnet retainer top 321 is towards the Magnet retainer cylinder portion 322 that axially downside extends.Magnet retainer 32 has the peristome running through insertion for axle 31 in central authorities, and the inner peripheral surface of peristome is fixed on axle 31.Radially inner side in Magnet retainer cylinder portion 322 is fixed with pad 34.That is, pad 34 has peristome in central authorities, and pad 34 is fixed on the radially inner side in Magnet retainer cylinder portion 322.Rotor magnet 33 is fixed on the outer peripheral face in Magnet retainer cylinder portion 322.
Rotor magnet 33 is the circular Magnet rotated together with axle 31.The outer peripheral face of rotor magnet 33 is the most opposed with the inner of multiple teeth 52 of stator core 231.Further, it is magnetized with N pole and S pole the outer peripheral face of rotor magnet 33 is circumferentially alternating.It addition, be used as multiple Magnet to replace circular rotor magnet 33.In this case, it is also possible to the most alternately arranged mode in N pole and S pole arranges multiple Magnet.
Magnet retainer cylinder portion 322 has: the first internal diameter cylinder portion 323；And it is positioned at the second internal diameter cylinder portion 324 leaning on axially downside than the first internal diameter cylinder portion 323.First internal diameter cylinder portion internal diameter size r1 is less than the second internal diameter cylinder portion internal diameter size r2.Further, the outer radial periphery face 343 of pad abuts with the inner peripheral surface 327 in the second internal diameter cylinder portion.According to this structure, it is possible to increase the running accuracy of rotating part 3.Describe reason in detailed below.In the present embodiment, the radially inner circumference face 344 of pad abuts with the outer peripheral face of axle 31.Thereby, it is possible to improve the running accuracy of rotating part 3 further.
Describe firstly, for the Magnet retainer 32 as common manufacturing press-molded products.In the inner-rotor type motor of the type being fixed with rotor magnet 33 at the outer peripheral face of Magnet retainer 32, in order to improve the running accuracy of rotating part 3, need the axiality improving rotor magnet 33 with rotation axis 9.Therefore, when being formed Magnet retainer 32 by punch forming, it is preferred to use pay attention to being fixed with the forming method of the axiality of the outer peripheral face of the Magnet retainer 32 of rotor magnet 33.But, when the molding Magnet retainer 32 by punch forming, it is not easy the axiality of the outer peripheral face with high-precision modeling Magnet retainer 32 and inner peripheral surface both sides, therefore to improve the coaxial accuracy of the outer peripheral face of Magnet retainer 32, the coaxial accuracy of the inner peripheral surface of Magnet retainer 32 becomes more relatively low than the coaxial accuracy of outer peripheral face.
On the other hand, in order to suppress the Magnet retainer 32 vibration relative to rotation axis 9, need Magnet retainer 32 is firmly fixed at axle 31.Therefore, such as Japanese Unexamined Patent Publication 2005-253293 publication is recorded, using following structure: at the inner peripheral surface setting-up piece 34 of Magnet retainer 32, the outer peripheral face of pad 34 abuts with the inner peripheral surface of Magnet retainer 32, and the inner peripheral surface of pad 34 abuts with the outer peripheral face of axle 31.Thereby, it is possible to suppression Magnet retainer 32 is relative to the vibration of rotation axis 9.
But, if as it has been described above, by improve Magnet retainer 32 outer peripheral face coaxial accuracy in the way of punch forming Magnet retainer 32, then the coaxial accuracy relative drop of the inner peripheral surface of Magnet retainer 32.Therefore, when punch forming Magnet retainer 32, it is difficult to improve the thickness and precision of the radial direction of Magnet retainer 32, thus be difficult to control to the deviation of the internal diameter size of Magnet retainer 32.Therefore, when pad 34 being fixed on the inner peripheral surface of Magnet retainer 32, such as at the internal diameter size of Magnet retainer 32 more than in the case of constant dimensions, pad outer peripheral face 343 not inner peripheral surface with Magnet retainer 32 abuts, and Magnet retainer 32 is fixedly secured to axle 31 from being unable to.And, in the case of the internal diameter size of Magnet retainer 32 is less than constant dimensions, when pad 34 being fixed on the inner peripheral surface of Magnet retainer 32, owing to applying the power making Magnet retainer 32 be radially oriented outer expandable, therefore the outer peripheral face of Magnet retainer 32 is also affected by this power and is radially oriented outside and deforms, thus causes the coaxial accuracy of rotor magnet 33 to decline.
But, in the structure of the motor involved by the first embodiment of the application utility model, when the molding Magnet retainer 32 by punch forming, first, punch forming is carried out in the way of improving the coaxial accuracy of the outer peripheral face of Magnet retainer 32, then, inner peripheral surface by the second internal diameter cylinder portion 324 of following process molding Magnet retainer 32, the axiality of the outer peripheral face in molding the first internal diameter cylinder portion 323 accurately, and, additionally it is possible to the axiality of the inner peripheral surface in molding the second internal diameter cylinder portion 324 accurately.Additionally, in the present embodiment, after the molding Magnet retainer 32 by punch forming, the inner peripheral surface in following process the second internal diameter cylinder portion 324, but the most necessarily according to this order molding Magnet retainer 32, it is also possible to molding Magnet retainer 32 and the second internal diameter cylinder portion 324 simultaneously.
In the present embodiment, as in figure 2 it is shown, the axial length in the first internal diameter cylinder portion 323 is more than the axial length in the second internal diameter cylinder portion 324.According to this structure, when pad 34 being fixed on second internal diameter cylinder portion's inner peripheral surface 327, reduce further the impact of outer peripheral face on the first internal diameter cylinder portion 323, and by molding Magnet retainer 32 while controlling the internal diameter size of the second internal diameter cylinder portion inner peripheral surface 327, thus the axiality of the outer peripheral face in Magnet retainer cylinder portion 322 can be improved.
Further, as it is shown in figure 1, the axial length of rotor magnet 33 is more than the axial length in the second internal diameter cylinder portion 324.According to this structure, when pad 34 being fixed on second internal diameter cylinder portion's inner peripheral surface 327, reducing the impact of outer peripheral face on Magnet retainer 32, and the magnetic force of effect between rotor magnet 33 and stator 23 can be increased.
The lower axial end of rotor magnet 33 is positioned at the position leaning on axially upside than the upper axial end in the second internal diameter cylinder portion 324.According to this structure, though because of formed the second internal diameter cylinder portion 324 cause the outer peripheral face in rotor drum portion 322 to be radially oriented lateral expansion time, it is also possible to reduce impact suffered by rotor magnet 33.
In the present embodiment, the radial thickness in the first internal diameter cylinder portion 323 is more than the radial thickness in the second internal diameter cylinder portion 324.According to this structure, when forming the second internal diameter cylinder portion 324, form inner peripheral surface by reducing the radial thickness in the second internal diameter cylinder portion 324, it is possible to increase the precision of the second inside diameter internal diameter size r2.
Pad 34 has: bottom the pad of the Directional Extension orthogonal with rotation axis 9 341；And the turn-up portion 342 that the radial inner end of 341 cylindrically extends towards axial downside bottom pad.
Further, the inner peripheral surface of turn-up portion 342 abuts with the outer peripheral face of axle 31.According to this structure, it is possible to increase pad 34 and the fastening force of axle 31.And, compared with the situation that the outer radial periphery face at pad 34 arranges turn-up portion, improve the precision of the overall dimensions of pad 34, therefore when pad 34 being fixed on the inner peripheral surface of Magnet retainer 32, it is possible to reduce the impact of the axiality of the outer peripheral face on Magnet retainer 32.
Further, the axially upside in the outer radial periphery face of pad 34 is formed with curved surface in the way of the least the closer to the outside dimension of axially upside pad 34.According to this structure, when axially pad 34 is fixed on the second internal diameter cylinder portion by downside, it is possible to reduce the impact on Magnet retainer 32.
The upper axial end of the upper axial end in the outer radial periphery face of pad 34 and the second internal diameter cylinder portion inner peripheral surface 327 is in the axial direction across gap configuration.According to this structure, the ratio upper axial end in the second internal diameter cylinder portion 324 is high by the internal diameter precision of the axially upper axial end in internal diameter size ratio of precision the second internal diameter cylinder portion 324 of downside, therefore when being pressed into pad 34, it is possible to increase the coaxial accuracy of the outer peripheral face in Magnet retainer cylinder portion 322.It addition, Magnet retainer cylinder portion 322 has the end difference 325 of the lower axial end of the inner peripheral surface in the first internal diameter cylinder portion 323 of connection and the upper axial end of the inner peripheral surface in the second internal diameter cylinder portion 324.Further, the upper axial end in the outer radial periphery face of pad 34 can also abut in the axial direction with end difference 325.Thus, when being pressed into pad 34, it is possible to determine the axial position of pad 34.
Bearing portion 4 has: be positioned at the clutch shaft bearing 41 leaning on axially downside than pad 34；And it is positioned at the second bearing 42 leaning on axially upside than Magnet retainer top 321.As it has been described above, the outer peripheral face of clutch shaft bearing 41 is fixed on casing 21, the outer peripheral face of the second bearing 42 is fixed on cap 22.Further, the inner peripheral surface of clutch shaft bearing 41 and the second bearing 42 is fixed on the outer peripheral face of axle 31.Thus, axle 31 is supported as rotating by bearing portion 4.It addition, the bearing portion 4 of present embodiment is made up of ball bearing, but this utility model is not limited to this.Bearing portion 4 such as can also be made up of other Bearning mechanisms such as sliding bearing or FDB.
When providing driving electric current by circuit board 24 to coil 233, each tooth 52 at stator core 231 produces magnetic flux radially.Further, the effect by the magnetic flux between tooth 52 and rotor magnet 33 produces the torque of circumference.As a result of which it is, rotation axis 3 rotates centered by rotation axis 9 relative to stationary part 2.
<1-2. is about each several part fixing of motor>
It follows that fixed position and fixing means to each several part of motor 12 illustrate.Fig. 4 is the sectional elevation of stator core 231.In motor 12, cause the vibration of noise fixed position between the components and contact site transmission.Therefore, by thinking over the configuration of the fixed position between each parts and contact site, it is possible to the resonance between suppression component.
As it has been described above, the inner peripheral surface in the outer peripheral face of the core-back 51 of stator core 231 and casing cylinder portion 212 is fixed together.Therefore, it is transferred to casing 21 because of the vibration acting on coil 233 and tooth 52 generation of magnetic flux from the outer peripheral face of stator core 231.
Further, the vibration produced because rotating part 3 rotates is transferred to casing 21 and cap 22 by bearing portion 4.
As shown in Figure 4, the outer peripheral face of the tubular of core-back 51 has multiple stator contact portion 511 and multiple non-contact portion 512.Stator contact portion 511 is radially oriented protruding outside than other parts i.e. non-contact portion 512 of core-back 51.Multiple stator contact portions 511 are arranged at intervals the most in the circumferential.That is, stator contact portion 511 is alternately arranged in the circumferential with non-contact portion 512.
By the inner peripheral surface in core-back 51 pressing machine thimble portion 212, stator core 231 is fixed on casing 21.Thus, stator contact portion 511 contacts with the inner peripheral surface in casing cylinder portion 212, and non-contact portion 512 does not contacts with casing cylinder portion 212.It addition, in the present embodiment, stator core 231 is fixed by press-in with casing 21, but also can be fixed with casing 21 by stator core 231 by being pressed into the additive method such as bonding or bonding.
As it is shown in figure 1, the cap cylinder portion 222 of cap 22 has the multiple cap contact sites 71 contacted with casing 21.In the present embodiment, casing 21 is fixed on cap 22 by riveting.Specifically, by making near the upper end in casing cylinder portion 212 partially toward radially inner side plastic deformation, casing 21 is fixed on the cap contact site 71 near the bottom being positioned at cap cylinder portion 222.In fig. 4 it is shown that the circumferential position of cap contact site 71.As shown in Figure 4, multiple cap contact sites 71 are arranged at intervals the most in the circumferential.
As shown in Figure 4, the circumferential position of the circumference central authorities in stator contact portion 511 is different from the circumferential position of the circumference central authorities of tooth 52 respectively.Consequently, it is possible to respectively different with the circumferential position of the circumference central authorities of tooth 52 by the circumferential position of the circumference central authorities of at least one in stator contact portion 511, it is suppressed that the vibration amplification produced at coil 233 and tooth 52 is transferred to casing 21.Therefore, it is possible to reduce the vibration of motor 12.Further, in the present embodiment, the circumferential position of the circumference central authorities in multiple stator contact portions 511 is all different from the circumferential position of each circumference central authorities of tooth 52.As a result of which it is, the vibration of motor 12 can be reduced further.
Further, the circumferential position of cap contact site 71 is respectively different with the circumferential position in stator contact portion 511.Consequently, it is possible to different from the circumferential position in stator contact portion 511 by the circumferential position of at least one in cap contact site 71, the vibration being transferred to casing 21 via stator contact portion 511 from stator 23 will not be transferred to cap 22 again.Therefore, the vibration characteristics of the vibration being transferred to casing 21 from stator 23 via stator contact portion 511 is different with the vibration characteristics of the vibration being transferred to cap 22 via cap contact site 71 further from casing 21.As a result of which it is, casing 21 can be suppressed to resonate with cap 22.Therefore, it is possible to reduce the vibration of motor 12.
The most in the present embodiment, the circumferential position of multiple cap contact sites 71 is different from the circumferential position in stator contact portion 511 respectively.Therefore, it is possible to suppression casing 21 resonates with cap 22 further.
Further, the vibration of the upper side in casing cylinder portion 212 is bigger than the vibration of lower side.Further, owing to the part the most nonoverlapping with stator contact portion 511 in casing cylinder portion 212 is not fixed by stator 51, violent oscillatory motion therefore it is particularly easy to.So, by the part contact of cap contact site 71 with easy violent oscillatory motion, and it is fixed together with cap 22, it is possible to suppression casing cylinder portion 212 vibrates.Therefore, it is possible to reduce the vibration of motor 12 further.
Here, the stator contact portion 511 of present embodiment has at five.But tooth 52 has the six roots of sensation.That is, the radical of tooth 52 and the quantity prime number each other in stator contact portion 511.Thereby, it is possible to suppression stator core 231 resonates with casing 21.Further, the cap contact site 71 of present embodiment is at five.That is, the radical of tooth 52 and the quantity prime number each other of cap contact site 71.Thereby, it is possible to suppression stator core 231 resonates with cap 22.As a result of which it is, the vibration of motor 12 can be reduced further.
Consequently, it is possible to the quantity of preferably stator contact portion 511 and cap contact site 71 is five or prime number more than five.The radical of tooth 52 is the multiple of three in the case of three-phase motor, is the multiple of two in the case of biphase motor.Therefore, if the quantity of stator contact portion 511 and cap contact site 71 be five or more than five prime number, it becomes possible to suppression casing 21 and cap 22 resonate with stator core 231.
Further, multiple stator contact portions 511 configure in the mode relative to rotation axis 9 (rotationally symmetrical, equivalent arrangements in the circumferential) axisymmetricly.Configured the most equably by the press-in position of stator core 231 with casing 21, it is possible to suppression causes stator core 231 deformation unevenly because of press-in.Therefore, it is possible to suppression causes the magnetic characteristic of motor 12 to decline because of press-in.
On the other hand, in the present embodiment, multiple cap contact sites 71 are so that relative to rotation axis 9, in non-axis symmetry, the mode of (rotation asymmetry, the most unequal configuration) configures.Thus, if by cap contact site 71 to configure relative to the nonaxisymmetrical mode of rotation axis 9, even if in the case of then the quantity in stator contact portion 511 is identical with the quantity of cap contact site 71 or the radical of tooth 52 and the quantity of cap contact site 71 identical in the case of, it is also possible to suppression casing 21, cap 22 and stator 23 resonate.
As shown in Figure 4, the circumferential width in stator contact portion 511 is wider than the circumferential width of the circumferential width of tooth 52 and cap contact site 71.Further, the circumferential width sum in stator contact portion 511 is bigger than the circumferential width sum of non-contact portion 512.Consequently, it is possible to by arranging greatly by the circumferential width in stator contact portion 511 as far as possible, thus improve the fixing intensity of casing 21 and stator 23.As a result of which it is, improve casing 21 and the rigidity of stator 23 such that it is able to suppression motor 12 vibrates further.
Further, as it is shown in figure 1, the axial length in casing cylinder portion 212 is longer than the axial length of stator core 231.Further, stator contact portion 511 extends to bottom from the upper end of the outer peripheral face of core-back 51.Consequently, it is possible to by as far as possible the axial length in stator contact portion 511 being arranged longer, it is possible to improve the fixing intensity of casing 21 and stator 23 further.As a result of which it is, improve casing 21 and the rigidity of stator 23 such that it is able to suppression motor 12 vibrates further.
But, as it has been described above, in embodiments, bearing portion 4 uses clutch shaft bearing 41 and the second bearing 42 the two ball bearing.The quantity of the clutch shaft bearing 41 of present embodiment and the ball of the second bearing 42 is seven.That is, the quantity of the ball of the ball bearing of bearing portion 4 and the quantity prime number each other of tooth 52.Thus, it is suppressed that be transferred to the vibration also amplification overlapping with the vibration being transferred to casing 21 and cap 22 from tooth 52 of casing 21 and cap 22 from axle 31.
And, in the present embodiment, the clutch shaft bearing maintaining part 213 keeping clutch shaft bearing 41 highlights downward than bottom of shell 211, and, the second bearing cage 223 to bottom cap 221 keeping the second bearing 42 highlights upward, therefore, it is possible to the axial distance expanded between clutch shaft bearing 41 and the second bearing 42.Therefore, it is suppressed that the inclination of axle 31 such that it is able to reduce the vibration caused because of the inclination of axle 31.I.e., it is suppressed that the vibration of motor 12.
Further, in the present embodiment, antivibrating parts (not shown) can also be configured with between the upper surface of the lower surface of cap 22 and stator core 231.It is arranged in the face of casing 21, cap 22 and the space of stator core 231 by antivibrating parts 25, it is possible to suppress the vibration effect parts to other of each parts.Therefore, further suppress the vibration of motor 12.
By above structure, in the present embodiment, the vibration characteristics of the vibration being transferred to casing 21 from stator 23 via stator contact portion 511 is different with the vibration characteristics of the vibration being transferred to cap 22 via cap contact site 71.Therefore, it is possible to suppression casing 21 resonates with cap 22 such that it is able to reduce the vibration of motor 12 entirety.Further, the vibration by being arranged in by cap contact site 71 in casing cylinder portion 212 easily becomes big part, it is possible to suppression casing cylinder portion 212 vibrates.Consequently, it is possible to pass through this utility model, it is possible to effectively suppress the vibration of motor.
<2. the second embodiment>
Above the embodiment illustrated in this utility model is illustrated, but this utility model is not limited to above-mentioned embodiment.
Fig. 5 is the sectional elevation of the stator core 231A of the motor involved by the second embodiment example.Stator core 231A has circular core-back 51A and is radially oriented, from core-back 51A, many rooted teeth 52A that inner side is prominent.In fig. 5 it is shown that the circumferential position of cap contact site 71A.In the example of fig. 5, cap contact site 71A is at seven, and configures the most equably.Further, stator contact portion 511A is identical with above-mentioned embodiment, is configured with at five, and configures the most equably.
As it is shown in figure 5, the outer peripheral face of the tubular of core-back 51A has multiple stator contact portion 511A and multiple non-contact portion 512A.The 511A other parts i.e. non-contact portion 512A than core-back 51A in stator contact portion is radially oriented protruding outside.Multiple stator contact portion 511A are arranged at intervals the most in the circumferential.That is, stator contact portion 511A is alternately arranged in the circumferential with non-contact portion 512A.
As shown in the example of figure 5, it is possible to the quantity of cap contact site 71A and the quantity prime number each other of stator contact portion 511A.Thus, it is suppressed that be transferred to the vibration of casing and the vibration resonance being transferred to casing from stator from cap.In this case, even if cap contact site 71A and stator contact portion 511A configures the most equably, it is also possible to suppress to be transferred to the vibration of casing and the vibration resonance being transferred to casing from stator from cap.
<3. the 3rd embodiment>
Fig. 6 is the sectional elevation of the stator core 231B of other motors involved by the 3rd embodiment.In the example of fig. 6, the outer peripheral face of the tubular of core-back 51B has multiple stator contact portion 511B and multiple non-contact portion 512B.The 511B other parts i.e. non-contact portion 512B than core-back 51B in stator contact portion is radially oriented protruding outside.Multiple stator contact portion 511B are arranged at intervals the most in the circumferential.That is, stator contact portion 511B is alternately arranged in the circumferential with non-contact portion 512B.Further, in the example of fig. 6, stator core 231B has alignment mark 53B.Alignment mark 53B includes the first labelling 531B and the second labelling 532B.Alignment mark 53B is the breach that the outer peripheral face from core-back 51B is radially oriented inner side depression.
Variform first labelling 531B and the second labelling 532B is arranged in the position deviated mutually less than 180 degree.Thus, when manufacturing stator core 231B by multiple electromagnetic steel plates of stacking, or easily confirm the exterior and the interior of each electromagnetic steel plate when stator core 231B is pressed into casing etc..That is, improve manufacture efficiency.
Even if when motor drives, the position of the radial outside of the tooth 52B in core-back 51B is also without flow through magnetic flux.Therefore, the flowing on magnetic flux in stator core 231B does not produce this position of impact and arranges alignment mark 53B.
In the example of fig. 6, the circumferential position of stator contact portion 511B is different from the circumferential position of alignment mark 53B.Thus, it is therefore prevented that stator contact portion 511B is aligned labelling 53B in the circumferential and blocks, or stator contact portion 511B reduces in the circumferential.Therefore, not only inhibit and cause stator core 231B deformation because of press-in, and inhibit casing to decline with the fixing intensity of stator core 231B.
<4. the 4th embodiment variation>
Fig. 7 is the longitudinal section of other motor 12C involved by the 4th embodiment.In the example of fig. 7, motor 12C includes circuit board 24C.Further, in the example of fig. 7, motor 12C has adapter 242C replacement wire.Further, in adapter 242C is configured at external connecting 220C being arranged on cap cylinder portion 222C.Consequently, it is possible to circuit board can also be carried out by additive methods such as adapters in addition to the leads with outside electrical connection.Such as, it is possible to a part for circuit board 24 is exposed to the outside of the housing being made up of casing and cap in passing external connecting.
<5. the 5th embodiment variation>
Fig. 8 is from the Magnet retainer 32 involved by the 5th embodiment that axially downside is observed and the figure of pad 34D.It addition, in the explanation of following 3rd embodiment, use the symbol identical with the first embodiment for the parts identical with the first embodiment.Further, for the explanation etc. of the component omission parts identical with the first embodiment.
Pad 34D is directed towards the Directional Extension orthogonal with central axis 9, and has the circular parts of the most through through hole in central authorities.The outer radial periphery face 343D of pad is the arc-shaped centered by central axis 9.The outer radial periphery face 343D of pad has and opens pad notch part 345D jaggy to radially inner side.The radial outer end 346D of pad notch part is positioned at the position leaning on radially inner side than the outer radial periphery face 343D of pad.Therefore, radial outer end 346D and the second internal diameter cylinder portion inner peripheral surface 327 of pad notch part does not contacts.The outside dimension of the radial outer end 346D of pad notch part is less than the internal diameter size in the first internal diameter cylinder portion 323.That is, radial outer end 346D and the second internal diameter cylinder portion inner peripheral surface 327 of pad notch part is opposed across gap diametrically.Thus, when pad 34D being pressed into second internal diameter cylinder portion's inner peripheral surface 327, it is possible to constitute the stream of the air discharge passed through for the air within Magnet retainer 32.Therefore, it is not necessary to apply power by force, it becomes possible to pad 34D to be fixed on the second internal diameter cylinder portion inner peripheral surface 327.It addition, in the present embodiment, the radial outer end 346D of pad notch part is positioned at the position leaning on radially inner side than radial inner end that is first internal diameter cylinder portion inner peripheral surface 326 of end difference 325.Thereby, it is possible to constitute broader air flow circuit.
The outer radial periphery face 343D of pad has multiple pad notch part 345D.Multiple pad notch part 345D the most equally spaced configure.Thereby, it is possible to pad 34D is rigidly secured together with Magnet retainer 32.Further, the most equally spaced being configured by pad notch part 345D, the second internal diameter cylinder portion inner peripheral surface 327 can make the power born from pad 34D disperse with preferred ratio in the circumferential such that it is able to improves the running accuracy of rotating part 3 further.In the present embodiment, pad notch part 345D is the most equally spaced formed everywhere.But, the quantity of pad notch part 345D may not be four, and pad notch part 345D can also unequal interval ground configuration in the circumferential.
The radially inner circumference face 344D of pad is positioned at the position leaning on radial outside than the outer peripheral face of axle 31.That is, the radially inner circumference face 344D of pad is opposed across gap diametrically with the outer peripheral face of axle 31.Thus, it is not necessary to axle 31 is fixed together with pad 34D, it is possible to increase the running accuracy of rotating part 3.Further, owing to radial outer end 346D and the second internal diameter cylinder portion inner peripheral surface 327 of pad notch part do not contact, therefore, it is possible to configure miscellaneous part between the radial outer end 346D and the second internal diameter cylinder portion inner peripheral surface 327 of pad notch part.Thereby, it is possible to degree of freedom when improving design motor 12.
<6. the 6th embodiment variation>
Fig. 9 is from the pad 34E involved by the 6th embodiment that axially downside is observed and the figure of Magnet retainer 32E.Pad 34E is directed towards the Directional Extension orthogonal with central axis 9 and has the ring-type parts of through hole in central authorities.The outer peripheral face 343E of pad is the cylindrical shape centered by central axis 9.The radially inner circumference face 344E of pad is opposed across gap diametrically with the outer peripheral face of axle 31.
Magnet retainer 32E is the cylindric parts axially extended.Identical with the first embodiment, Magnet retainer 32E has: the first internal diameter cylinder portion；And it is positioned at the second internal diameter cylinder portion 324E leaning on axially downside than the first internal diameter cylinder portion.In time radially observing, in the second region overlapping with the outer radial periphery face 343E of pad for internal diameter cylinder portion 324E, the inner peripheral surface 327E that the second internal diameter cylinder portion 324E has from the second internal diameter cylinder portion opens the second internal diameter cylinder portion notch part 328E jaggy to radial outside.The inner radial surface of the second internal diameter cylinder portion notch part 328E does not contacts with the outer radial periphery face 343E of pad.Thereby, it is possible to the air flow circuit constituted in Magnet retainer 32E.
Second internal diameter cylinder portion notch part 328E the most equally spaced configures.Thereby, it is possible to keep the spin balancing of Magnet retainer 32E.In the present embodiment, the second internal diameter cylinder portion notch part 328E is formed everywhere.But, the quantity of the second internal diameter cylinder portion notch part 328E may not be four, and the second internal diameter cylinder portion notch part 328E can also unequal interval ground configuration in the circumferential.
<7. the 7th embodiment variation>
Figure 10 is from the pad 34F involved by the 7th embodiment that axially downside is observed and the figure of Magnet retainer 32.Pad 34F is directed towards the Directional Extension orthogonal with central axis 9 and has 341F bottom the pad that central authorities have the most through through hole.The outer radial periphery face 343F of pad is the cylindrical shape centered by central axis 9.Pad 34F is pressed into and is fixed on the second internal diameter cylinder portion 324 of Magnet retainer 32.That is, the radial position of the outer radial periphery face 343F of pad is substantially uniform with the radial position in the second internal diameter cylinder portion 324.Further, the radially inner circumference face 344F of pad is opposed across gap diametrically with the outer peripheral face of axle 31.
Bottom pad, 341F has the most through pad through hole 345F.Thereby, it is possible to constitute the air flow circuit within Magnet retainer 32.Pad through hole 345F the most equally spaced configures.Thereby, it is possible to make the mass centre of pad 34F overlapping with central axis 9, or make the mass centre of pad 34F near central axis 9.Therefore, it is possible to improve the running accuracy of rotating part 3.It addition, in the present embodiment, pad through hole 345F is circumferentially, equally spaced formed at three, but the quantity of pad through hole 345F may not be three.Further, pad through hole 345F also can be formed on unequal interval ground in the circumferential.
And, motor of the present utility model is in addition to the business automation equipment such as printer, photocopier, can be also used for the transporting equipments such as automobile, household appliances, armarium, ATM (Automatic Teller Machine, ATM), disk drive device and Air Blast fan etc., be used for producing various driving force.Thus, above-mentioned electronic equipment can use the motor that running accuracy is high.
In addition, the shape of the detail section of motor also can be different from each diagram of the application.Further, above-mentioned first embodiment can carry out suitable combination to the key element of appearance in the 5th embodiment in the range of not conflicting.
Claims (21)
1. a motor, has:
Axle, it extends along the rotation axis extended at above-below direction；
Rotating part, it rotates together with described axle；
Stator, it is configured at the radial outside of described rotating part；
Bearing portion, described axle is supported as rotating by it；And
Casing, it has the casing cylinder portion being tubular and extending along described rotation axis, and described casing covers described stator from radial outside and supports described bearing portion,
Described motor is characterised by,
Described rotating part has:
Magnet retainer, it is manufacturing press-molded products, and has the Magnet retainer top towards the Directional Extension orthogonal with described rotation axis and the radial outside from described Magnet retainer top towards the Magnet retainer cylinder portion that axially downside extends；
Rotor magnet, it is fixed in the outer peripheral face in described Magnet retainer cylinder portion；And
Pad, it has peristome in central authorities, and pad is fixed on the radially inner side in described Magnet retainer cylinder portion,
Described Magnet retainer cylinder portion has:
First internal diameter cylinder portion；And
Second internal diameter cylinder portion, it is positioned at than described first internal diameter cylinder portion by the position of axially downside,
The internal diameter size in described first internal diameter cylinder portion is less than the internal diameter size in described second internal diameter cylinder portion,
The outer radial periphery face of described pad abuts with the inner peripheral surface in described second internal diameter cylinder portion.
Motor the most according to claim 1, it is characterised in that
The radially inner circumference face of described pad abuts with the outer peripheral face of described axle.
Motor the most according to claim 2, it is characterised in that
The axial length in described first internal diameter cylinder portion is more than the axial length in described second internal diameter cylinder portion.
Motor the most according to claim 3, it is characterised in that
The axial length of described rotor magnet is more than the axial length in described second internal diameter cylinder portion.
Motor the most according to claim 3, it is characterised in that
The lower axial end of described rotor magnet is positioned at the position leaning on axially upside than the upper axial end in described second internal diameter cylinder portion.
Motor the most according to claim 2, it is characterised in that
Described motor also has the circuit board towards the Directional Extension orthogonal with described rotation axis,
Described stator also has insulating part, and described insulating part has:
Cover portion, it covers the upside end face of described stator；And
Substrate supporting portion, it is upwardly projecting towards axle from described cover portion,
Described circuit board has the Hall element of the circumferential position detecting described rotating part,
In the position leaning on axially upside than described Magnet retainer top, described circuit board is held in the position the most opposed with described Magnet retainer top by described substrate supporting portion.
Motor the most according to claim 6, it is characterised in that
Described rotating part also has sensor-magnet, and described sensor-magnet is positioned at the position leaning on axially downside than described circuit board, and described sensor-magnet is the most opposed with described Hall element.
Motor the most according to claim 3, it is characterised in that
The radial thickness in described first internal diameter cylinder portion is more than the radial thickness in described second internal diameter cylinder portion.
Motor the most according to claim 2, it is characterised in that
Described pad has:
Bottom pad, it is towards the Directional Extension orthogonal with described rotation axis；And
Turn-up portion, its radial inner end bottom described pad cylindrically extends towards axially downside,
The inner peripheral surface of described turn-up portion abuts with the outer peripheral face of described axle.
Motor the most according to claim 9, it is characterised in that
There is bottom described pad the most through pad through hole.
11. motors according to claim 10, it is characterised in that
Described pad through hole the most equally spaced configures.
12. motors according to claim 9, it is characterised in that
The upper axial end of the upper axial end in described pad outer radial periphery face and described second internal diameter cylinder portion inner peripheral surface is in the axial direction across gap configuration.
13. motors according to claim 12, it is characterised in that
The described pad oriented radially inner side of outer radial periphery mask opens pad notch part jaggy,
The radial outer end of described pad notch part does not contacts with described second internal diameter cylinder portion inner peripheral surface.
14. motors according to claim 13, it is characterised in that
In time radially observing, in the region that described second internal diameter cylinder portion is overlapping with the outer radial periphery face of described pad, described second internal diameter cylinder portion has and opens the second internal diameter cylinder portion notch part jaggy from described second internal diameter cylinder portion inner circumferential towards radial outside,
The radially inner circumference face of described second internal diameter cylinder portion notch part does not contacts with the outer radial periphery face of described pad.
15. motors according to claim 1, it is characterised in that
Described Magnet retainer cylinder portion has end difference, and described end difference connects the upper axial end of the lower axial end of the inner peripheral surface in described first internal diameter cylinder portion and the inner peripheral surface in described second internal diameter cylinder portion,
The upper axial end in the outer radial periphery face of described pad abuts in the axial direction with described end difference.
16. motors according to claim 15, it is characterised in that
The oriented radially inner side of outer radial periphery mask of described pad opens pad notch part jaggy,
The radial outer end of described pad notch part does not contacts with the inner peripheral surface in described second internal diameter cylinder portion,
The outside dimension of the radial outer end of described pad notch part is less than the internal diameter size in described first internal diameter cylinder portion.
17. motors according to claim 12, it is characterised in that
The outer radial periphery mask of described pad has multiple pad notch part,
The plurality of pad notch part the most equally spaced configures.
18. motors according to claim 1, it is characterised in that
Described bearing portion has:
Clutch shaft bearing, it is positioned at the position leaning on axially downside than described pad；And
Second bearing, it is positioned at than described Magnet retainer top by the position of axially upside,
Described casing has:
Bottom of shell, its lower axial end from described casing cylinder portion is radially oriented inner side and extends；And
Clutch shaft bearing maintaining part, it extends towards axially downside from the radial inner end of described bottom of shell, and described clutch shaft bearing maintaining part keeps described clutch shaft bearing.
19. motors according to claim 18, it is characterised in that
The lower end of described axle is more prominent towards axially downside than described casing.
20. motors according to claim 18, it is characterised in that
Described motor also has and is positioned at than described casing cylinder portion by the cap of axially upside,
Described cap has:
Bottom cap, it extends towards with described rotation axis generally perpendicular direction；
Cap cylinder portion, its radial outer end bottom described cap extends towards axially downside in tubular；And
Second bearing cage, its radial inner end bottom described cap extends towards axially upside in tubular, and described second bearing cage keeps described second bearing.
21. 1 kinds of electronic equipments, it is characterised in that
Described electronic equipment has the motor according to any one of claim 1 to 20.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015003722A JP2016129473A (en) | 2015-01-10 | 2015-01-10 | motor |
| JP2015-003722 | 2015-01-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205622411U true CN205622411U (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620014137.7U Expired - Fee Related CN205622411U (en) | 2015-01-10 | 2016-01-08 | Motor and have electronic equipment of this motor |
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| Country | Link |
|---|---|
| JP (1) | JP2016129473A (en) |
| CN (1) | CN205622411U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233584A (en) * | 2016-12-22 | 2018-06-29 | 日本电产（东莞）有限公司 | Motor |
| CN109309428A (en) * | 2017-07-28 | 2019-02-05 | Weg电子设备有限公司 | Rotary generator |
| CN113675984A (en) * | 2020-05-15 | 2021-11-19 | 广东威灵电机制造有限公司 | Rotating electrical machine and fan |
| US11855486B2 (en) | 2019-02-20 | 2023-12-26 | Nidec Corporation | Stator core, rotor core, and motor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7151168B2 (en) * | 2018-05-23 | 2022-10-12 | 日本電産株式会社 | motor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61147586U (en) * | 1985-03-05 | 1986-09-11 | ||
| JP5540547B2 (en) * | 2009-04-02 | 2014-07-02 | パナソニック株式会社 | Inner rotor type brushless motor and cooling fan |
| JP5629875B2 (en) * | 2010-08-17 | 2014-11-26 | 日本電産株式会社 | motor |
-
2015
- 2015-01-10 JP JP2015003722A patent/JP2016129473A/en active Pending
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2016
- 2016-01-08 CN CN201620014137.7U patent/CN205622411U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108233584A (en) * | 2016-12-22 | 2018-06-29 | 日本电产（东莞）有限公司 | Motor |
| CN109309428A (en) * | 2017-07-28 | 2019-02-05 | Weg电子设备有限公司 | Rotary generator |
| CN109309428B (en) * | 2017-07-28 | 2023-05-02 | Weg电子设备有限公司 | Rotary generator |
| US11855486B2 (en) | 2019-02-20 | 2023-12-26 | Nidec Corporation | Stator core, rotor core, and motor |
| CN113675984A (en) * | 2020-05-15 | 2021-11-19 | 广东威灵电机制造有限公司 | Rotating electrical machine and fan |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016129473A (en) | 2016-07-14 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161005 |
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| CF01 | Termination of patent right due to non-payment of annual fee |