CN109586516A - Motor and sensor installing structure - Google Patents
Motor and sensor installing structure Download PDFInfo
- Publication number
- CN109586516A CN109586516A CN201811137770.5A CN201811137770A CN109586516A CN 109586516 A CN109586516 A CN 109586516A CN 201811137770 A CN201811137770 A CN 201811137770A CN 109586516 A CN109586516 A CN 109586516A
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- China
- Prior art keywords
- sensor
- motor
- protrusion
- sensor wrap
- hole
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Motor Or Generator Frames (AREA)
Abstract
The present invention provides motor and sensor installing structure, and the side in the motor shell and the sensor wrap has a connecting hole, and another party has and has the arm extended from peripheral wall to radial outside with the engagement pawl that engages around the connecting hole, the sensor wrap.A side in the front end and motor shell of the arm has the protrusion axially protruded, another party has the embedded hole being fitted into for the protrusion, the arm exerts a force to the sensor wrap towards the direction far from the motor shell in axial direction by the Qian He flexible deformation of the protrusion and the embedded hole.
Description
Technical field
The present invention relates to the motors of the sensor of the rotation position with detection rotor.Moreover, it relates to will test
The sensor of the defined characteristic of main part is installed on the sensor installing structure of main part.
Background technique
Existing motor is disclosed in Japanese Unexamined Patent Publication 2009-177968 bulletin.The motor includes rotor, has
The axis axially extended；Stator, it is opposed radially with rotor；And motor shell, store rotor and stator.In addition,
Motor shell is tubular, and the top of motor shell is covered by upper surface part (bottom).In addition, being formed with perforation in upper surface part
Hole.The upper end of axis is projected into the outside of motor shell via through hole.
The sensor of the rotation position of detection rotor is provided with above motor shell.Sensor has opposed pairs
Element, an element is installed on the upper end of axis and another element is installed on sensor wrap (sensor outer housing).
Sensor wrap is tubular, and the fixinig plate that an opposite radial outside extends is provided on peripheral wall.It is set on fixinig plate
It is equipped with location hole, the upper surface part of motor shell is provided with bolt hole.Bolt is inserted in location hole and bolt hole, spiral shell is made
Nut of the bolt with configuration in the inside of motor shell screws togather.Sensor wrap and motor shell are fastened and fixed as a result,.
However, there are the following problems according to above-mentioned existing motor: causing number of components to increase because using screw bolt and nut
Add to which manufacturing cost improves and assembling operation reduces.
In addition, the sensor in the defined characteristic that will test main part is installed on the sensor installing structure of main part
In, there are the following problems as described above: using screw bolt and nut, number of components increases to manufacturing cost
It improves and assembling operation reduces.
Summary of the invention
It reduces manufacturing cost the object of the present invention is to provide number of components can be reduced and improves assembling operation
Motor and sensor installing structure.
The motor of one embodiment of illustration of the invention includes rotor, has the axis axially extended；Stator,
It is opposed radially with the rotor；Motor shell stores the rotor and the stator；Sensor, detection described in
The rotation position of rotor；And sensor wrap, it stores the sensor and is installed on axial one end of the motor shell,
A side in the motor shell and the sensor wrap has connecting hole, and another party has and engages around the connecting hole
Engagement pawl, the sensor wrap has arm from peripheral wall to radial outside that extend from, the front end of the arm and motor shell
In a side there is the protrusion that axially protrudes, another party has the embedded hole being fitted into for the protrusion, and the arm is logical
Cross the Qian He of the protrusion and the embedded hole and flexible deformation, to the sensor wrap towards in axial direction far from the horse
It exerts a force up to the direction of shell.
In addition, the sensor installing structure of an embodiment of illustration of the invention will test the defined spy of main part
Property sensor be installed on the main part, wherein the sensor installing structure includes shell, covers the main part；With
And sensor wrap, it stores the sensor and is mounted on the setting face of the shell, the shell and the sensor
A side in cover has a connecting hole, and another party has an engagement pawl being inserted in the connecting hole, the sensor wrap have from
The arm that peripheral wall extends to radial outside, the side in the front end of the arm and the shell have the protrusion axially protruded
Portion, another party have the embedded hole being fitted into for the protrusion, and the arm is embedding by the protrusion and the embedded hole
Close and flexible deformation, the direction for being directed away from the setting face to the sensor wrap exert a force.
According to the present invention of illustration, number of components can be reduced to reduce manufacturing cost and improve assembling by being capable of providing
The motor and sensor installing structure of workability.
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 perspective view of the motor of first embodiment of the invention.
Fig. 2 is the outline longitudinal section view of the motor of first embodiment of the invention.
Fig. 3 is the exploded perspective view of the motor of first embodiment of the invention.
Fig. 4 is the perspective view for showing the sensor wrap of motor of first embodiment of the invention from below.
Fig. 5 is the top view of the motor shell of the motor of first embodiment of the invention.
Fig. 6 is the top view shown in by the connecting hole amplification of the motor of first embodiment of the invention.
Fig. 7 is to show a part amplification of the motor shell of the motor of first embodiment of the invention and sensor wrap
Cross-sectional view.
Fig. 8 is the bottom view of the installation base plate of the motor of first embodiment of the invention.
Fig. 9 is the cross-sectional view along the line A-A in Fig. 8.
Figure 10 is before showing the sensor wrap for the motor that installation base plate is fixed on to first embodiment of the invention
The cross-sectional view of state.
Figure 11 is the top view of the motor shell of the motor of second embodiment of the present invention.
Figure 12 is the perspective view of the sensor wrap of the motor of second embodiment of the present invention.
Figure 13 is the top view of the motor shell of the motor of third embodiment of the present invention.
Figure 14 is the top view of the motor shell of the motor of the 4th embodiment of the invention.
Figure 15 is the sensor wrap for showing the motor of the 5th embodiment of the invention and the mounting structure of installation base plate
Cross-sectional view.
Specific embodiment
Hereinafter, embodiment illustrated of the invention is described in detail referring to attached drawing.In the present specification, by horse
The central axial upside reached is used as " upside ", using downside as " downside ".In addition, up and down direction is not offered as being assembled into reality
Equipment when positional relationship and direction.In addition, by " axis is known as with the direction of centerline axis parallel or substantially parallel direction
To ", the radial direction centered on central axis is referred to as " radial direction ", it will be circumferential as " circumferential direction " using centered on central axis.
< first embodiment >
(overall structures of 1. motors)
Following explanation is carried out to the motor of embodiment illustrated of the invention.Fig. 1, Fig. 2 shows first embodiments
Motor 10 perspective view, outline longitudinal section view.Motor 10 has the motor shell 20 of storage stator 22 and rotor 23.
Motor shell 20 is metal, the upper surface part of the upper surface with cylindric body portion 20b and nappe portion
20a.In addition, the lower surface of body portion 20b is open, covered by flange part 40.
Stator 22 is ring-type, is fixed on the inner peripheral surface of body portion 20b.In addition, stator 22 is determined comprising what is be made of stacked steel plate
The sub- iron core 22a and coil 22b that stator core 22a is wound in across insulating element.
The radially inner side of rotor 23 and stator 22 is opposed to configure.Rotor 23 is cylindrical shape, includes magnet.In rotor 23
Central part is fixed with axis 24.Rotor 23 is fixed on axis 24.Rotor 23 circumferentially surrounds axis 24.
Axis 24 is the cylindrical part extended along central axis C.Axis 24 is supported by upside bearing 25a and lower side bearing 25b
For that can be rotated around central axis C.
Upside bearing 25a is configured in the top of rotor 23.Upside bearing 25a is maintained in the center of upper surface part 20a
From inner surface cricoid upside maintaining part 20c outstanding downwards.
Lower side bearing 25b configuration is in the lower section of rotor 23.Lower side bearing 25b is maintained at configuration in the center of flange part 40
In the downside maintaining part 40a of inner surface.
In addition, being formed with upper surface through hole 21 in the center of upper surface part 20a.The upper end of axis 24 is passed through via upper surface
Through-hole 21 and it is prominent to the top of upper surface part 20a.Sensor-magnet portion 26, sensor-magnet are fixed in the upper end of axis 24
Portion 26 is rotated by the driving of motor 10 with axis 24 together.
Sensor wrap 33 is configured in the top of motor shell 20.Sensor wrap 33 is synthetic resin, is had from top
It covers the upper wall 34 in sensor-magnet portion 26 and surrounds the peripheral wall 35 in sensor-magnet portion 26 from side.The periphery of sensor wrap 33
Edge is formed in the position that radially inner side is leaned on than the outer peripheral edge of motor shell 20 under vertical view.That is, the diameter of sensor wrap 33 compares horse
Diameter up to shell 20 is small.In addition, sensor wrap 33 is installed on motor shell 20 by aftermentioned mounting structure.
It is fixed with installation base plate 32 in the inside of sensor wrap 33, which is equipped with sensor 31.Sensor
31 are configured in a manner of separating defined distance with sensor-magnet portion 26.Sensor 31 and sensor-magnet portion 26 are in the axial direction
It is opposed.Magnet of 31 pairs of the sensor configurations in the sensor-magnet portion 26 that the rotation with axis 24 rotates is (not shown) to carry out
Detection, to detect the rotation position of rotor 23.In addition, installation base plate 32 is fixed on biography by aftermentioned substrate mounting structure
Sensor cover 33.
In addition, the peripheral wall 35 in sensor wrap 33 is formed with routing hole (not shown), the communication arrangement introduced via routing hole
Line 62 (referring to Fig.1) is connect with installation base plate 32.
Motor 10 is and will be supplied to stator 22 via the driving current of 61 input of electric current wiring from external device (ED) to fixed
Son 22 is motivated.At this point, rotor 23 and axis 24 are rotated by from the magnetic field that stator 22 generates around central axis C.
In addition, motor shell 20 consists of metal, sensor wrap 33 is made of resin.That is, motor shell 20 is expanded by line
The small material of coefficient ratio sensor wrap 33 is constituted.Therefore, for temperature when driving even for motor 10 rises, motor shell
20 deformation is also smaller.
(2. sensor installing structure)
Fig. 3 shows the exploded perspective view of motor 10, and Fig. 4 shows the perspective view for observing from below sensor wrap 33.It passes
The lower surface of the opening of sensor cover 33 is covered by the upper surface part 20a of motor shell 20.
In addition, peripheral wall 35 has the planar portions 35a in two opposed faces and the curved face part 35b in two opposed faces.Plane
Portion 35a and curved face part 35b are alternately arranged in the circumferential.Curved face part 35b is the curved surface to radial outside for convex.
The opposite joint 38 axially extended is formed on planar portions 35a.Upper end is formed with by cantilever beam between seam 38
The column piece 38a of bearing.In the lower end of column piece 38a, arm 37a extends to radial outside.That is, arm 37a is configured at plane
The side of portion 35a.The front end of arm 37a is provided with downside protrusion 37b outstanding in the axial direction.Protrusion 37b be set to
The embedded hole 29 of the upper surface part 20a of motor shell 20 is chimeric.
Engagement pawl 36 is provided on curved face part 35b.Engagement pawl 36 has upright portion 36a and buckling portion 36b.Upright portion
From the lower end of curved face part 35b, downside extends 36a in the axial direction.That is, engagement pawl 36 is configured at the lower surface of curved face part 35b.Buckling portion
36b is from the front end of upright portion 36a to radially inner side buckling.
In addition, column piece 38a configuration is easy radially in planar portions 35a, therefore compared with being set to curved face part 35b
Flexure.
Root 37c is provided at the root of protrusion 37b.The diameter of root 37c is bigger than embedded hole 29, and root 37c's is outer
Position of the periphery positioned at the periphery than embedded hole 29 in the outer part.As a result, when engagement pawl 36 engages with connecting hole 28, root 37c
By downside pressing in the axial direction around embedded hole 29.
The shielding portion 39 for stitching 38 is covered from the inner surface protrusion of peripheral wall 35 in being internally provided with for sensor wrap 33.By
This, can block the dust that the inside of sensor wrap 33 is invaded via seam 38 using shielding portion 39.
The upper wall 34 of sensor wrap 33 is provided with a pair of of holding hole 34a.Hold hole 34a and buckling portion 36b in the axial direction
It is opposed to configure.Thereby, it is possible to be inserted in fixture to hold in the 34a of hole to be easy to hold sensor wrap 33.This improves
The assembling operation of motor shell 20 and sensor wrap 33.
In the inner surface of upper wall 34, lower section is prominent in the axial direction by cricoid rib 34b.Rib 34b prevents upper wall 34 to deform.
Thereby, it is possible to prevent the position of the installation base plate for being fixed on upper wall 34 32 from shifting and generating the detection error of sensor 31.
In addition, radially inner side of the cricoid rib 34b configuration in planar portions 35a and curved face part 35b.Therefore, even if being acted on from planar portions 35a
Stress it is different from the stress acted on from curved face part 35b, by the way that cricoid rib 34b is arranged, can also make to act on sensor wrap
Stress more uniformization at 33 center.
Fig. 5 is the top view of motor shell 20, and Fig. 6 is the top view shown in by the amplification of connecting hole 28.In addition, in Fig. 5, figure
In 6, shows engagement pawl 36 shown in dotted line and be inserted in the state in connecting hole 28.
In the upper surface part 20a of motor shell 20, connecting hole 28 and embedded hole 29 clip central axis C and distinguish each setting
In Liang Chu.Connecting hole 28 and embedded hole 29 are alternately arranged in the circumferential.Connecting hole 28 has the first hole portion 28a and the second hole portion
28b.Second hole portion 28b and the first hole portion 28a are continuous in the circumferential.
The area of the second hole portion of area ratio 28b of first hole portion 28a is big.First hole portion 28a width W1 ratio in the radial direction
Buckling portion 36b width W4 in the radial direction is big.Second hole portion 28b width W2 in the radial direction is more in the radial direction than upright portion 36a
Width W3 is big.Second hole portion 28b width W2 in the radial direction width W4 more in the radial direction than buckling portion 36b is small.First hole portion 28a
Width W5 in the circumferential is bigger than the width W6 of buckling portion 36b in the circumferential.That is, connecting hole 28 is when along end on observation than engaging
Pawl 36 is big.First connecting hole 28a is bigger than engagement pawl 36 when along end on observation.Second connecting hole 28b is in the ratio of the when along end on observation
Engagement pawl 36 is small.The length of connecting hole 28 in the circumferential is longer than the length of buckling portion 36b in the circumferential.
In the present embodiment, sensor wrap 33 (is schemed around circumferential after being inserted in engagement pawl 36 in first hole portion 28a
Clockwise direction in 5) rotation.As a result, engagement pawl 36 move in the circumferential and make around the second hole portion 28b with buckling portion
36b engaging.At this point, upright portion 36a is located at the inside of the second hole portion 28b.That is, engagement pawl 36 can be in connecting hole 28 circumferentially
It is mobile, and engage around connecting hole 28.In addition, so-called " can move " refers to when being assembled, engagement pawl 36 can be
It is mobile with when engaging around connecting hole 28.That is, as described later, and limiting sensor chimeric with embedded hole 29 in protrusion 37b
It " can be moved " in the state that cover 33 is before movement circumferentially and radially.
Thereby, it is possible to sensor wrap 33 is easily installed at motor shell 20.Therefore, the component of motor 10 can be reduced
Quantity is to reduce manufacturing cost and improve assembling operation.In addition, when reducing sensor wrap 33 because of the driving of motor 10
It vibrates and shifts in the axial direction relative to motor shell 20, so as to prevent the detection error of sensor 31.
In addition, can more reduce sensor wrap 33 relative to motor by with multiple engagement pawls 36 and connecting hole 28
Shell 20 shifts in the axial direction.
In addition, when engagement pawl 36 is inserted in the first hole portion 28a, arm 37a flexible deformation and make protrusion 37b with
It is contiguously configured on upper surface part 20a.When make sensor wrap 33 around rotate in a circumferential direction and by engagement pawl 36 configure in the second hole portion 28b
When interior, protrusion 37b is chimeric with embedded hole 29.Sensor wrap 33 is limited as a result, in circumferential and radially movement.Therefore,
It can prevent mobile to the side opposite with when engaging with the engagement pawl 36 engaged around the second hole portion 28b and cause engaging de-
From.
In addition, the position of sensor wrap 33 can be reduced if protrusion 37b and the chimeric gap of embedded hole 29 is made to become smaller
Offset, therefore more preferably.At this point, also can even if protrusion 37b and embedded hole 29 deviate radially because of machining accuracy
Protrusion 37b is embedded in easily in embedded hole 29 by the flexible deformation of column piece 38a.
Fig. 7 is the cross-sectional view shown in by a part amplification of sensor wrap 33 and motor shell 20.The lower end position of root 37c
In the position of the lower end than peripheral wall 35 on the lower.As a result, when engagement pawl 36 engages with connecting hole 28, by root 37c by arm
It lifts upwards the front end of portion 37a.
At this point, arm 37a bends and acts on the power R1 far from upper surface part 20a to sensor wrap 33.That is, arm 37a is logical
The Qian He of protrusion 37b and embedded hole 29 are crossed and flexible deformation, to sensor wrap 33 towards being axially away from motor shell 20
Direction force.Buckling portion 36b is pressed against around the second hole portion 28b as a result, so as to further decrease sensor wrap
33 shift in the axial direction relative to motor shell 20.
In addition, having multiple engagement pawls 36, protrusion 37b is configured in the circumferential between multiple engagement pawls 36.Exist as a result,
It, can in the case where acting on the power R1 far from motor shell 20 to sensor wrap 33 via the arm 37a configured with protrusion 37b
Adjacent multiple buckling portion 36b are steadily pressed into around the second hole portion 28b.Thereby, it is possible to more reduce sensor wrap
33 shift in the axial direction relative to motor shell 20.
In addition, the lower end due to protrusion 37b is located at the position more against the top than 36 lower end of engagement pawl, by engagement pawl
36 elasticity for being inserted in the first hole portion 28a and protrusion 37b and upper surface part 20a being enable to reduce arm 37a when contacting become
Shape amount.Thereby, it is possible to prevent arm 37a damaged.
In addition, through root 37c configuration at the root of protrusion 37b, it can when protrusion 37b is chimeric with embedded hole 29
The front end of arm 37a is lifted upwards.In addition, the inclined surface of root 37c is linearly formed in hangs down with radial in Fig. 7
On straight section.But it is also possible to the curve-like that the inclined surface of root 37c is in protrusion outward is formed in vertical with radial direction
On section.That is, the inclined surface of root 37c can also be made to link the fillet between protrusion 37b and arm 37a.
Alternatively, it is also possible to replacement root 37c by from the lower surface of arm 37a, downside protrusion setting outstanding exists in the axial direction
The position different from protrusion 37b.At this point, the overhang of protrusion 37b is bigger than the overhang of protrusion.As a result, in protrusion 37b
In the state of chimeric with embedded hole 29, the lower end of protrusion is contacted with upper surface part 20a so as to which the front end of arm 37a is upward
Side is lifted.Alternatively, it is also possible to which the protrusion that upside in the axial direction protrudes and contacts with arm 37a is arranged on upper surface part 20a.
(3. substrate mounting structure)
Fig. 8 shows the bottom view of installation base plate 32, and Fig. 9 shows the cross-sectional view along the line A-A in Fig. 8.Base is installed
Plate 32 is configured with sensor 31 on central axis C, has the first through hole 32a and the second through hole around sensor 31
32b.Inserted with positioning region 52 in the first through hole 32a, inserted with fixed part 53 in the second through hole 32b.
Positioning region 52 and fixed part 53 and sensor wrap 33 are integrally formed, from the inner surface of the upper wall 34 of sensor wrap 33 to
Axial downside is prominent.
The setting of fixed part 53 is arranged in three places, positioning region 52 in two places.In addition, the configuration of positioning region 52 is in circumferential direction
Between upper adjacent fixed part 53.In addition, positioning region 52 configures the position shorter than fixed part 53 in the radial distance away from central axis C
It sets.Thereby, it is possible to stably keep installation base plate 32 by positioning region 52 and fixed part 53.
Positioning region 52 is in the cone cell that horizontal cross-section is that round and outer diameter becomes smaller towards axial downside.The positioning region as a result,
52 be inserted in the first through hole 32a to prevent installation base plate 32 with shift on axially vertical direction.In addition,
By by positioning region 52 be arranged more than two places, it is therefore prevented that installation base plate 32 centered on positioning region 52 around rotate in a circumferential direction from
And it shifts.
Downside is prominent in the axial direction from supporting part 54 for fixed part 53, has pressure contact portion 53a and runs through insertion section 53b.
Downside is prominent in the axial direction from the inner surface of upper wall 34 for supporting part 54, and outer diameter is bigger than the second through hole 32b.Therefore, exist
When fixed part 53 is inserted in the second through hole 32b supporting part 54 contacted with installation base plate 32 to installation base plate 32 with it is upper
Gap is formed between wall 34.Even if can also prevent the peace for being fixed on upper wall 34 in the case where sensor wrap 33 deforms as a result,
The position of dress substrate 32 shifts and generates the detection error of sensor 31.
Through insertion section 53b be it is cylindric, the internal diameter through insertion section 53b is smaller than the outer diameter of supporting part 54.Through insertion
Portion 53b is axially protruded from supporting part 54 and is inserted into the second through hole 32b.Pressure contact portion 53a is to through insertion section 53b
Front end is crimped and is formed, and installation base plate 32 is fixed on upper wall 34.
Alternatively, it is also possible to configure fixed part 53 and supporting part 54 in different positions.In this case, run through insertion section
53b is axially protruded from the inner surface of upper wall 34.
Figure 10 is the cross-sectional view for showing the state being fixed on installation base plate 32 before sensor wrap 33.In addition, in Figure 10
In, show the state upward by the inner surface of upper wall 34.It is inserted in passing through in the second through hole 32b of installation base plate 32
The front end for wearing insertion section 53b is prominent from installation base plate 32.By to through insertion section 53b front end carry out thermal welding come into
Row crimping, to form pressure contact portion 53a, is fixed on sensor wrap 33 for installation base plate 32.
At this point, preventing installation base plate 32 in the state of with shifting on axially vertical direction by positioning region 52
It is crimped.Therefore, it can be improved the positioning accuracy of installation base plate 32 and prevent the positional shift of sensor 31, to prevent biography
The generation of the detection error of sensor 31.
In addition, the positioning region 52 of cone cell is inserted in the first through hole 32a and along direction of insertion press installation base plate
In the state of 32, substrate 32 is fixedly mounted by pressure contact portion 53a.Therefore, have will be from for effect around the first through hole 32a
The counteractive power that positioning region 52 is extracted along the direction opposite with direction of insertion.It is improved as a result, to before the 53b of insertion section
End carries out thermal welding come workability when being crimped.
In addition, effect has the power pressed from pressure contact portion 53a along direction of insertion and from 52 edge of positioning region on installation base plate 32
The power in the direction opposite with direction of insertion.Thereby, it is possible to more prevent because motor 10 drive when vibration due to lead to installation base plate
32 shift in the axial direction relative to sensor wrap 33.
< second embodiment >
Next, being illustrated to second embodiment of the present invention.Figure 11 is the horse of the motor 10 of second embodiment
Up to the top view of shell 20, Figure 12 is the perspective view of sensor wrap 33.For ease of description, to above-mentioned Fig. 1~Figure 10 institute
The identical part of the first embodiment shown marks identical label.In this second embodiment, engagement pawl 36 and connecting hole 28
Shape be different from the first embodiment.Other parts are identical with first embodiment.In addition, being shown in broken lines in Figure 11
Engagement pawl 36 shows the state being inserted in connecting hole 28.
Connecting hole 28 is formed as arcuation circumferentially.The upright portion 36a of engagement pawl 36 is axially extended, buckling portion
36b is from the front end of upright portion 36a circumferentially buckling.At this point, the width in the radial direction of connecting hole 28 is radially than buckling portion 36b
Width it is big.The width of connecting hole 28 in the circumferential is bigger than the width of buckling portion 36b in the circumferential.That is, connecting hole 28 is along axis
To bigger than engagement pawl 36 when observation.In addition, the length of connecting hole 28 in the circumferential is longer than the length of buckling portion 36b in the circumferential.
Make sensor wrap 33 around rotating in a circumferential direction and engagement pawl 36 is inserted in connecting hole 28, engagement pawl 36 with engage
Engage around hole 28.That is, engagement pawl 36 can be circumferentially moved in connecting hole 28, and engage around connecting hole 28.This
When, protrusion 37b (referring to Fig. 7) is chimeric with embedded hole 29 to limit the movement of sensor wrap 33 in the circumferential.According to this
Embodiment can be not provided with the second hole portion 28b, and only be engaged by the first hole portion 28a with engagement pawl 36.Therefore, Neng Goujian
Change the punching of connecting hole 28.In addition, effect same as the first embodiment can be obtained.
< third embodiment >
Next, being illustrated to third embodiment of the present invention.Figure 13 is the horse of the motor 10 of third embodiment
Up to the top view of shell 20.For ease of description, to part identical with above-mentioned Fig. 1~first embodiment shown in Fig. 10
Mark identical label.In the third embodiment, engagement pawl 36 and the shape of connecting hole 28 are different from the first embodiment.Its
His part is identical with first embodiment.In addition, in fig. 13 it is shown that engagement pawl 36 shown in dotted line is inserted in connecting hole 28
In state.
Connecting hole 28 has the first hole portion 28a circumferentially and radially continuous from one end of the first hole portion 28a
Second hole portion 28b.Second hole portion 28b of one connecting hole 28 extends inwardly from the first hole portion 28a, another connecting hole 28
Second hole portion 28b extends outward from the first hole portion 28a.
With above-mentioned Figure 12 shown in the same manner as second embodiment, the buckling portion 36b of engagement pawl 36 is from axially extending
Upright portion 36a front end circumferentially buckling.Upright portion 36a and buckling portion 36b is formed to be inserted in the first hole portion 28a
In, upright portion 36a is formed to be inserted in the second hole portion 28b.That is, the second hole portion of area ratio 28b of the first hole portion 28a
Area is big.First hole portion 28a width in the radial direction width more in the radial direction than buckling portion 36b is big.First hole portion 28a is in circumferential direction
On width it is bigger than the width of buckling portion 36b in the circumferential.The width of second hole portion 28b in the circumferential is than upright portion 36a in week
Upward width is big.The width of second hole portion 28b in the circumferential is smaller than the width of buckling portion 36b in the circumferential.That is, connecting hole 28
It is bigger than engagement pawl 36 when along end on observation.First connecting hole 28a is bigger than engagement pawl 36 when along end on observation.Second connecting hole
28b is smaller than engagement pawl 36 when along end on observation.In addition, the length more in the radial direction than buckling portion 36b radially of connecting hole 28
It is long.
After upright portion 36a and buckling portion 36b are inserted in the first hole portion 28a, by making sensor wrap 33 in diameter
Moved on (direction vertical with central axis C), engagement pawl 36 move radially and with block around the second hole portion 28b
It closes.That is, engagement pawl 36 and can engage in connecting hole 28 along moving with axially vertical direction around connecting hole 28.This
When, protrusion 37b (referring to Fig. 7) is chimeric with embedded hole 29 to limit the movement of sensor wrap 33 in the circumferential.According to this
Embodiment can obtain effect same as the first embodiment.
The 4th embodiment > of <
Next, being illustrated to the 4th embodiment of the invention.Figure 14 is the horse of the motor 10 of the 4th embodiment
Up to the top view of shell 20.For ease of description, to part identical with above-mentioned Fig. 1~first embodiment shown in Fig. 10
Mark identical label.In the fourth embodiment, engagement pawl 36 and the shape of connecting hole 28 are different from the first embodiment.Its
His part is identical with first embodiment.In addition, in fig. 14 it is shown that engagement pawl 36 shown in dotted line is inserted in connecting hole 28
In state.
Connecting hole 28 is formed as arcuation circumferentially.The upright portion 36a of engagement pawl 36 is axially extended, buckling portion
36b is from the front end of upright portion 36a radially buckling.The buckling portion 36b of one engagement pawl 36 is prominent from upright portion 36a to radially inner side
Out, the buckling portion 36b of another engagement pawl 36 is prominent from upright portion 36a to radial outside.Connecting hole 28 is formed to for vertical
If portion 36a and buckling portion 36b insertion.That is, the width in the radial direction of connecting hole 28 width more in the radial direction than buckling portion 36b is big.
The width of connecting hole 28 in the circumferential is bigger than the width of buckling portion 36b in the circumferential.That is, connecting hole 28 is in the ratio of the when along end on observation
Engagement pawl 36 is big.
After upright portion 36a and buckling portion 36b are inserted in connecting hole 28, by making sensor wrap 33 radially
It is mobile, engagement pawl 36 move radially and with engage around connecting hole 28.That is, engagement pawl 36 can in connecting hole 28 edge
It is mobile with axially vertical direction, and engage around connecting hole 28.At this point, protrusion 37b (referring to Fig. 7) is embedding with embedded hole 29
It closes to limit the movement of sensor wrap 33 in the circumferential.According to the present embodiment, it can obtain and first embodiment phase
Same effect.
The 5th embodiment > of <
Next, being illustrated to the 5th embodiment of the invention.Figure 15 is the motor 10 for showing the 5th embodiment
Sensor wrap 33 and installation base plate 32 mounting structure cross-sectional view.In addition, in fig. 10 it is shown that by the interior table of upper wall 34
Facing towards the state of top.In addition, for ease of description, to identical as above-mentioned Fig. 1~first embodiment shown in Fig. 10
Part mark identical label.In the 5th embodiment, the construction of fixed part 53 is different from the first embodiment.Other portions
Divide identical with first embodiment.
Fixed part 53 is made of screw 55, by screw 55 is screwed with the threaded hole 56 for being set to supporting part 54 come
Substrate 32 is fixedly mounted.According to the present embodiment, effect same as the first embodiment can be obtained.
Alternatively, it is also possible to which in different positions, threaded hole 56 is arranged in upper wall 34 in fixed part 53 and the configuration of supporting part 54.
(4. other)
Above embodiment is illustration of the invention.The structure of embodiment can also be without departing from technology of the invention
It is suitably changed in the range of thought.In addition, embodiment can be combined within the bounds of possibility to implement.
In the above-described embodiment, engagement pawl 36 is set to sensor wrap 33, connecting hole 28 is set to motor shell
20, but engagement pawl 36 can also be set on motor shell 20, connecting hole 28 is set in sensor wrap 33.In this case,
Upside is prominent in the axial direction from the upper surface part 20a of motor shell 20 for engagement pawl 36, and connecting hole 28 is configured at the lower end surface of peripheral wall 35.
In addition, in the above-described embodiment, protrusion 37b is set to sensor wrap 33, embedded hole 29 is set to horse
Up to shell 20, but protrusion 37b can also be set on motor shell 20, embedded hole 29 is set in sensor wrap 33.At this
In the case of, upside is prominent in the axial direction from the upper surface part 20a of motor shell 20 by protrusion 37b, and embedded hole 29 is configured in arm 37a
Front end.
In addition, in the above-described embodiment, engagement pawl 36 can move on edge in connecting hole 28 with axially vertical direction,
And with engage around connecting hole 28, but as long as being to limit the construction of axial movement, then other constructions also can be used.Example
Such as, it can use snap-fitted portion also engage engagement pawl with connecting hole.
In addition, in the above-described embodiment, inner-rotor type motor is illustrated, but the present invention can also apply to outside
Rotor type motor.
In addition, in the above-described embodiment, being carried out to the mounting structure of the sensor 31 of the rotation position of detection rotor 23
Explanation, but the present invention can also apply to detect the sensor of the defined characteristic of the main part covered by shell and install structure
It makes.
Industrial availability
Motor of the invention is for example suitable for electric power steering apparatus motor.In addition, sensor of the invention is installed
Construction also can be used in other electronic equipments.
Claims (10)
1. a kind of motor, which is characterized in that
The motor includes
Rotor has the axis axially extended；
Stator, it is opposed radially with the rotor；
Motor shell stores the rotor and the stator；
Sensor detects the rotation position of the rotor；And
Sensor wrap stores the sensor and is installed on axial one end of the motor shell,
A side in the motor shell and the sensor wrap has a connecting hole, another party have with around the connecting hole
The engagement pawl of engaging,
The sensor wrap has the arm extended from peripheral wall to radial outside,
A side in the front end and motor shell of the arm has the protrusion axially protruded, and another party has for described prominent
The chimeric embedded hole in the portion of rising,
The arm is by the Qian He flexible deformation of the protrusion and the embedded hole, to the sensor wrap towards axial
On far from the motor shell direction exert a force.
2. motor according to claim 1, which is characterized in that
The protrusion has root at root,
Position of the outer peripheral edge of the root positioned at the periphery than the embedded hole in the outer part.
3. motor according to claim 1 or 2, which is characterized in that
The sensor wrap includes
One opposite joint, they are axially extended on the peripheral wall；And
Column piece configures between the seam, upper end by cantilever beam support,
The arm extends from the outer surface of the column piece.
4. motor according to claim 3, which is characterized in that
The sensor wrap has the shielding portion that the seam is covered from the inner surface protrusion of the peripheral wall.
5. motor according to claim 1 or 2, which is characterized in that
The peripheral wall of the sensor wrap has planar portions,
The arm is located at the side of the planar portions.
6. motor according to claim 1 or 2, which is characterized in that
The engagement pawl and the protrusion are configured at the sensor wrap,
The lower end of the protrusion is located at the position more against the top than the lower end of the engagement pawl.
7. motor according to claim 1 or 2, which is characterized in that
The motor has multiple engagement pawls,
The protrusion is configured in the circumferential between multiple engagement pawls.
8. motor according to claim 1 or 2, which is characterized in that
The motor shell is made of the linear expansion coefficient material smaller than the sensor wrap.
9. motor according to claim 1 or 2, which is characterized in that
The sensor wrap has prominent from inner surface and surrounds the cricoid rib of the sensor.
10. the sensor detected to the defined characteristic of main part is installed on the master by a kind of sensor installing structure
Body portion, which is characterized in that
The sensor installing structure includes
Shell covers the main part；And
Sensor wrap is stored the sensor and is mounted on the setting face of the shell,
A side in the shell and the sensor wrap has connecting hole, and another party has the card being inserted in the connecting hole
Pawl is closed,
The sensor wrap has the arm extended from peripheral wall to radial outside,
A side in the front end of the arm and the shell has the protrusion axially protruded, and another party has for described prominent
The chimeric embedded hole in the portion of rising,
The arm is directed away from the sensor wrap by the Qian He flexible deformation of the protrusion and the embedded hole
The direction in the setting face exerts a force.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017-191589 | 2017-09-29 | ||
| JP2017191589A JP2019068611A (en) | 2017-09-29 | 2017-09-29 | Motor and sensor attachment structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109586516A true CN109586516A (en) | 2019-04-05 |
Family
ID=65919910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811137770.5A Pending CN109586516A (en) | 2017-09-29 | 2018-09-28 | Motor and sensor installing structure |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2019068611A (en) |
| CN (1) | CN109586516A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767324A (en) * | 2004-10-29 | 2006-05-03 | 株式会社三协精机制作所 | Electromotor |
| JP2009177968A (en) * | 2008-01-25 | 2009-08-06 | Nsk Ltd | Brushless motor and electric power steering device using it |
| CN201515097U (en) * | 2009-05-12 | 2010-06-23 | 昆山上正电子科技有限公司 | Structure of electronic connector |
| CN202488250U (en) * | 2011-01-31 | 2012-10-10 | 日本电产株式会社 | Motor |
| CN202840784U (en) * | 2011-08-11 | 2013-03-27 | 日本电产株式会社 | Motor |
| CN203482025U (en) * | 2012-08-20 | 2014-03-12 | 日本电产株式会社 | A motor |
| CN104976144A (en) * | 2014-04-14 | 2015-10-14 | 佛山市建准电子有限公司 | Fan and motor protection cover thereof |
| CN206777839U (en) * | 2016-10-18 | 2017-12-22 | 株式会社多美 | Toy top |
-
2017
- 2017-09-29 JP JP2017191589A patent/JP2019068611A/en active Pending
-
2018
- 2018-09-28 CN CN201811137770.5A patent/CN109586516A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1767324A (en) * | 2004-10-29 | 2006-05-03 | 株式会社三协精机制作所 | Electromotor |
| JP2009177968A (en) * | 2008-01-25 | 2009-08-06 | Nsk Ltd | Brushless motor and electric power steering device using it |
| CN201515097U (en) * | 2009-05-12 | 2010-06-23 | 昆山上正电子科技有限公司 | Structure of electronic connector |
| CN202488250U (en) * | 2011-01-31 | 2012-10-10 | 日本电产株式会社 | Motor |
| CN202840784U (en) * | 2011-08-11 | 2013-03-27 | 日本电产株式会社 | Motor |
| CN203482025U (en) * | 2012-08-20 | 2014-03-12 | 日本电产株式会社 | A motor |
| CN104976144A (en) * | 2014-04-14 | 2015-10-14 | 佛山市建准电子有限公司 | Fan and motor protection cover thereof |
| CN206777839U (en) * | 2016-10-18 | 2017-12-22 | 株式会社多美 | Toy top |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019068611A (en) | 2019-04-25 |
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Effective date of abandoning: 20220517 |