CN102780307A - Electromotor - Google Patents
Electromotor Download PDFInfo
- Publication number
- CN102780307A CN102780307A CN2012101289607A CN201210128960A CN102780307A CN 102780307 A CN102780307 A CN 102780307A CN 2012101289607 A CN2012101289607 A CN 2012101289607A CN 201210128960 A CN201210128960 A CN 201210128960A CN 102780307 A CN102780307 A CN 102780307A
- Authority
- CN
- China
- Prior art keywords
- bearing
- outlet side
- sliding bearing
- rotating shaft
- crooked
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 25
- 230000005764 inhibitory process Effects 0.000 claims description 102
- 238000005086 pumping Methods 0.000 claims description 67
- 238000005516 engineering process Methods 0.000 claims description 12
- 238000004080 punching Methods 0.000 claims description 11
- 230000000452 restraining effect Effects 0.000 abstract 4
- 239000002184 metal Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 238000005452 bending Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000004323 axial length Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229920000106 Liquid crystal polymer Polymers 0.000 description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920006324 polyoxymethylene Polymers 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- -1 polybutylene terephthalate Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
The invention provides an electromotor which can restrain axial deflection of a sliding bearing relative to a rotating axle even components such the sliding bearing capable of sliding along the rotating axle have lower precision. The electromotor (1) is provided with a rotator (4) provided with a rotating axle (2); a stator (6) arranged on the Peripheral side of the rotator (4); a sliding bearing (8) supporting an end part (2a) on an output side of the rotating axle (2) and capable of moving axially along the rotating axle (2); a force application component (10) applying axial force to the sliding bearing (8); and a bearing keeping part (7c) for keeping the sliding bearing (8) movably moving axially. In addition, the sliding bearing (8) is provided with a deflection restraining part (8t) for restraining axial deflection of the sliding bearing (8); on at least part of the peripheral direction of the sliding bearing (8), axial gaps between the deflection restraining part (8t) and a bearing keeping part (7c) are formed; in the electromotor (1), the deflection restraining part (8t) and the bearing keeping part (7c) are against each other to restrain the axial deflection of the sliding bearing (8).
Description
Technical field
The present invention relates to be provided with supporting rotating shaft the end and can be along the motor of the axially movable sliding bearing of rotating shaft.
Background technology
Under the prior art; As the motor that employed set of lenses in employed optical take-up apparatus in CD, the DVD player etc. or the camera etc. is moved; Known have a stepping motor (for example, with reference to patent documentation 1) that is formed with leading screw in the front from the outstanding rotating shaft of stator.The motor of being put down in writing in the patent documentation 1 is provided with anti-outlet side (opposition side of the outlet side) bearing of rearward end of outlet side bearing and supporting rotating shaft of the leading section of supporting rotating shaft.
Reverse pumping goes out side bearing and is fixed on the stator.Be fixed with framework on the stator, wherein, be formed with the bearing maintaining part that keeps the outlet side bearing on the said frame.Framework is for example formed by the sheet metal about 0.6mm.On the bearing maintaining part, be formed with the dead eye of configuration outlet side bearing, the outlet side bearing is retained as and can moves vertically through the bearing maintaining part.In addition, the leaf spring that is fixed on the bearing maintaining part of outlet side bearing has applied the power towards anti-outlet side.
Patent documentation 1: Japanese communique, spy open 2010-16923 number
Summary of the invention
In the motor that patent documentation 1 is put down in writing, the outlet side bearing is maintained on the framework that is formed by sheet metal with the mode that can move vertically.Therefore, when the parts precision of outlet side bearing or framework etc. is low, there is the danger with respect to axially crooked (inclination) of rotating shaft in dead eye of outlet side bearing.When the outlet side bearing was crooked in dead eye, it is big that the contact area of the leading section of rotating shaft and outlet side bearing becomes, thereby make resistance to sliding become big, consequently, has the danger of the output torque reduction of motor.In addition, when the outlet side bearing was crooked in dead eye, outlet side bearing and reverse pumping went out the axiality variation of side bearing, consequently, and the danger that exists the output torque of motor to reduce.
In the motor that patent documentation 1 is put down in writing, as long as the parts precision of raising outlet side bearing etc. just can be removed relevant issues.But in recent years, motor is the trend of more and more miniaturization, thereby produces the situation of the parts precision be difficult to improve outlet side bearing etc.
Therefore, problem of the present invention is, though provide a kind of can be low along the parts precision of axially movable sliding bearing of rotating shaft etc., also can suppress the axial crooked motor of sliding bearing with respect to rotating shaft.
In order to solve above-mentioned problem, motor of the present invention is characterised in that to possess: rotor, and it is provided with rotating shaft; Stator, it is configured in the outer circumferential side of rotor; Sliding bearing, the end of the end of the outlet side of its supporting rotating shaft or the anti-outlet side of rotating shaft, and can moving axially along rotating shaft; Force application part, it applies towards axial power sliding bearing; The bearing maintaining part, it can keep sliding bearing vertically movably, and; On sliding bearing; Be used to suppress sliding bearing with respect to axial crooked crooked inhibition portion to be formed with, at least a portion on the circumferencial direction of sliding bearing, be formed with the gap on axial between crooked inhibition portion and the bearing maintaining part towards the outstanding mode of the radial outside of sliding bearing; Crooked inhibition portion and bearing maintaining part connect, and it is crooked with respect to axially to suppress sliding bearing thus.
In motor of the present invention, on sliding bearing, be formed with and be used to suppress the axial crooked crooked inhibition portion of sliding bearing, and offset through crooked inhibition portion and bearing maintaining part and to fetch that to suppress sliding bearing crooked with respect to axial with respect to rotating shaft.Therefore, even the parts precision of sliding bearing etc. is low, also can utilize crooked inhibition portion to suppress sliding bearing axially crooked with respect to rotating shaft.In addition, in the present invention, at least a portion on the circumferencial direction of sliding bearing, the gap on being formed with axially between crooked inhibition portion and the bearing maintaining part, crooked inhibition portion is not and the complete butt of bearing maintaining part.Therefore, even on sliding bearing, be formed with crooked inhibition portion, the active force of force application part is acted on the sliding bearing.
In the present invention; For example the outlet side that is provided with at rotating shaft of motor is fixed on the framework on the stator; Sliding bearing is the outlet side bearing of end of the outlet side of supporting rotating shaft; The bearing maintaining part is formed on the framework, on the bearing maintaining part, is formed with the dead eye that connects the bearing maintaining part and dispose sliding bearing, and force application part applies the power towards the anti-outlet side of rotating shaft to sliding bearing.
In the present invention; Preferably on force application part, be formed with anti-shedding part, and, even under the state that anti-shedding part and sliding bearing connect; Also at least a portion on the circumferencial direction of sliding bearing; Gap on being formed with axially between crooked inhibition portion and the bearing maintaining part, wherein, above-mentioned anti-shedding part and sliding bearing connect and prevent that sliding bearing from coming off from the outlet side of dead eye towards rotating shaft.When such formation, can prevent that sliding bearing from coming off from dead eye, and the active force of force application part is acted on the sliding bearing.
In the present invention, the reverse pumping of preferred crooked inhibition portion's formation sliding bearing in the axial direction goes out distolateral, and the anti-outlet side of configuration bearing maintaining part in the axial direction.In addition, in the present invention, crooked inhibition portion also can form the output end of sliding bearing in the axial direction, and the outlet side of configuration bearing maintaining part in the axial direction.When such formation, when assembling motor, can be mark and sliding bearing is configured in the dead eye with crooked inhibition portion.Therefore, even for example sliding bearing is very little, also can prevent sliding bearing oppositely is assembled in the dead eye.
In the present invention, crooked inhibition portion for example be formed from the whole circumference of sliding bearing extend towards the outside radially flange shape.Under this situation, and compare with the situation that the state that separates predetermined distance forms a plurality of crooked inhibition portion, can improve the intensity of crooked inhibition portion along the circumferencial direction of sliding bearing.
In the present invention, when for example diametrically a part and the bearing maintaining part of Outboard Sections of crooked inhibition portion connects, the gap on being formed with axially between the inside part of crooked inhibition portion diametrically and the bearing maintaining part.In addition, under this situation, for example on the bearing maintaining part, be formed with the dead eye that connects the bearing maintaining part and dispose sliding bearing, dead eye forms through carrying out die-cut Punching Technology towards crooked inhibition portion side.Under this situation, form dead eye, thus, on the edge part of the crooked inhibition portion side of dead eye, be formed with overlap (burr), can prevent that also this overlap from contacting with crooked inhibition portion through carrying out die-cut Punching Technology towards crooked inhibition portion side.
In the present invention, for example on force application part, be formed with and connect with sliding bearing and sliding bearing is applied the bearing abutting part towards axial power, the position at the Off-Radial center of bearing abutting part and sliding bearing connects.
In the present invention; For example on sliding bearing, be formed with the bearing recess that configuration outlet side end or reverse pumping go out side end with the mode of depression, and; Outlet side end or reverse pumping go out side end and axially upwards are being supported in the bearing recess with the footpath; Wherein, above-mentioned outlet side end is the end of the outlet side of rotating shaft, and above-mentioned reverse pumping goes out the end that side end is the anti-outlet side of rotating shaft.
In the present invention; For example sliding bearing is the outlet side bearing of supporting as the outlet side end of the end of the outlet side of rotating shaft; On sliding bearing; To be formed with the bearing recess of configuration outlet side end towards the mode of outlet side depression from the end face of the anti-outlet side of sliding bearing; The diameter of outlet side end is less than the diameter of other parts except the outlet side end of the outlet side of rotating shaft; Other portion boundary places except the outlet side end at the outlet side of outlet side end and rotating shaft are formed with cascaded surface, between the end face of the anti-outlet side of cascaded surface and sliding bearing axially on the gap greater than the gap on axial between crooked inhibition portion and the bearing maintaining part.Under this situation, even crooked inhibition portion and bearing maintaining part connect, the cascaded surface of rotating shaft also not can with the sliding bearing butt.
In the present invention; For example sliding bearing is the outlet side bearing of supporting as the outlet side end of the end of the outlet side of rotating shaft; On sliding bearing; To be formed with the bearing recess of configuration outlet side end towards the mode of outlet side depression from the end face of the anti-outlet side of sliding bearing; Crooked inhibition portion is formed from the outer peripheral face of other parts except crooked inhibition portion of sliding bearing extends towards the outside radially, and the overhang of crooked inhibition portion is less than diametrically distance between the inner peripheral surface of the outer peripheral face of other parts except crooked inhibition portion of sliding bearing and bearing recess; Wherein, the overhang of above-mentioned crooked inhibition portion is a crooked inhibition portion from the outer peripheral face overhang diametrically of other parts except crooked inhibition portion of sliding bearing.
In the present invention; The reverse pumping of end that preferred motor is provided with the anti-outlet side of supporting rotating shaft goes out side bearing; Sliding bearing is the outlet side bearing of end of the outlet side of supporting rotating shaft; Force application part applies the power towards the anti-outlet side of rotating shaft to sliding bearing; Go out on the side bearing in reverse pumping, the reverse pumping of end that is formed with the anti-outlet side of configuration rotating shaft with the end face of the outlet side that goes out side bearing from reverse pumping towards the mode of anti-outlet side depression goes out the side bearing recess, and the bottom surface that reverse pumping goes out the anti-outlet side of side bearing recess is formed coniform or pyramidal.When such formation, can utilize reverse pumping to go out side bearing rotating shaft is carried out aligning.
(invention effect)
As stated, according to motor of the present invention,, also can suppress sliding bearing axially crooked with respect to rotating shaft even can be low along the parts precision of axially movable sliding bearing of rotating shaft etc.
Description of drawings
Fig. 1 is the sectional side view of the motor that relates to of execution mode of the present invention.
Fig. 2 is the figure from the E-E direction indication motor of Fig. 1.
Fig. 3 is the figure from the E-E direction indication framework of Fig. 1.
Fig. 4 is the sketch map of outlet side bearing shown in Figure 1, (A) is front view, (B) is the profile of the H-H section of (A), (C) is rearview, (D) is upward view.
Fig. 5 is the sketch map of leaf spring shown in Figure 1, (A) is front view, (B) is end view, (C) is the profile of the J-J section of (A).
Fig. 6 is the enlarged drawing of the K part of Fig. 1, (A) is the figure of the state when high such as the parts precision of expression outlet side bearing etc., (B) is the figure of the state when low such as the parts precision of expression outlet side bearing etc.
Fig. 7 is the amplification profile of outlet side bearing that expression the relates to prior art state when being configured in the dead eye.
(symbol description)
1 motor
2 rotating shafts
2a leading section (end of outlet side, outlet side end)
2b rearward end (end of anti-outlet side, reverse pumping goes out side end)
The 2e cascaded surface
4 rotors
6 stators
7 frameworks
7c side surface part (bearing maintaining part)
The 7e dead eye
8 outlet side bearings (sliding bearing)
The 8a bearing recess
8b rear end face (end face of the anti-outlet side of sliding bearing)
The crooked inhibition of 8t portion
9 reverse pumpings go out side bearing
9b bearing recess (reverse pumping goes out the side bearing recess)
The 9c bottom surface
10 leaf springs (force application part)
10b bearing abutting part
10c protuberance (anti-shedding part)
S (between crooked inhibition portion and the bearing maintaining part axially on) gap
S1 (reverse pumping of cascaded surface and sliding bearing go out between the side end face axially on) gap
Embodiment
Below, with reference to accompanying drawing execution mode of the present invention is described.
(integral body of motor constitutes)
Fig. 1 is the sectional side view of the motor 1 that relates to of execution mode of the present invention.
The motor 1 of this mode is so-called PM (Permanent magnet, a permanent magnetism) type stepping motor.As shown in Figure 1, motor 1 possesses: rotor 4, and it is provided with rotating shaft 2 and permanent magnet 3 roughly cylindraceous; Stator 6, it is provided with the utmost point tooth 5 of the radial outside that is configured in permanent magnet 3; Framework 7, its outlet side at rotating shaft 2 is installed on the stator 6.
In addition, motor 1 possesses: outlet side bearing 8, the end 2a of the outlet side of its supporting rotating shaft 2 (left part of Fig. 1); Anti-outlet side (opposition side of outlet side) bearing 9, the end 2b of the anti-outlet side of its supporting rotating shaft 2 (right part of Fig. 1); Leaf spring 10, it is to be used for rotating shaft 2 is applied the force application part towards the power of anti-outlet side.
In addition, in following explanation, the left side of Fig. 1 that will become the outlet side of rotating shaft 2 is made as " front ", and the right side of Fig. 1 that will become the anti-outlet side of rotating shaft 2 is made as " rear end side ".In addition, in following explanation, the Y direction of Fig. 1 is made as " above-below direction ", the directions X (direction vertical with paper) of Fig. 1 is made as " left and right directions ".In addition, below end (outlet side end) 2a of the outlet side of rotating shaft 2 is made as " leading section 2a ", end (reverse pumping the goes out side end) 2b of the anti-outlet side of rotating shaft 2 is made as " rearward end 2b ".
Rotating shaft 2 is formed by the metal of stainless steel, aluminium or brass etc.It is planar that the rear end of the 2b of front-end and back-end portion of the leading section 2a of rotating shaft 2 is formed hemisphere.In addition, the diameter of leading section 2a and rearward end 2b is less than the diameter of other parts of rotating shaft 2.The rearward end 2b side of rotating shaft 2 is fixed with permanent magnet 3.In addition, the leading section 2a side of rotating shaft 2 becomes the protuberance 2c that gives prominence to from stator 6.On this protuberance 2c, be formed with leading screw (lead screw) 2d.The moving body of leading screw 2d and for example optical take-up apparatus etc. screws togather, and this moving body is moved.
Stator 6 possesses first stator pack 12 and second stator pack 13.First stator pack 12 and second stator pack 13 are configured with overlapping in the axial direction mode.
In this mode, the outer circumferential side of external stator magnetic core 14 part plays a role as the housing section of the periphery that covers coil 15.Likewise, the outer circumferential side of external stator magnetic core 18 part plays a role as the housing section of the periphery that covers coil 15.
On in the axial direction the bobbin 16 and the part between the bobbin 19, be with bobbin 16 and bobbin 19 and form the terminal board 21 that stretches out towards radial outside.On terminal board 21, be fixed with the terminal pins 22 that is used for to coil 15 supplying electric currents.The end of coil 15 is wound onto on the terminal pins 22.
Reverse pumping goes out side bearing 9 and is formed by resin, and be formed flange part 9a with the rear end side of being configured in the round-ended cylinder shape arranged.Go out on the side bearing 9 in reverse pumping, be formed with the bearing recess 9b of the rearward end 2b that inserts rotating shaft 2 with the front end that goes out side bearing 9 from reverse pumping towards the mode of rear end side depression.Shape when bearing recess 9b is formed from end on observation is rounded.The internal diameter of bearing recess 9b is a bit larger tham the external diameter of rearward end 2b, between the inner peripheral surface of the outer peripheral face of rearward end 2b and bearing recess 9b, is formed with small gap.In addition, the bottom surface 9c of bearing recess 9b is formed coniform or pyramidal.
As shown in Figure 1; Applied towards the rear end (being specially the rear end that is formed the planar rearward end 2b of hemisphere) of the rotating shaft 2 of the power of rear end side by leaf spring 10 and to contact with the bottom surface 9c of bearing recess 9b, the rear end of rotating shaft 2 is supported in reverse pumping through bottom surface 9c and goes out in the side bearing 9 on radial and axial.In addition, because that the bottom surface 9c of bearing recess 9b is formed is coniform or pyramidal, therefore, reverse pumping goes out side bearing 9 and has the function of rotating shaft 2 being carried out aligning.That is, in the motor 1 of this mode, go out 9 pairs of rotating shafts of side bearing 2 through reverse pumping and carry out aligning.In addition, in this mode, the bottom surface 9c of bearing recess 9b is formed coniform or pyramidal, and the rear end of rotating shaft 2 contacts with bottom surface 9c line thus.The rear end and the reverse pumping that therefore, can reduce rotating shaft 2 go out the slip loss between the side bearing 9.
On the rear end face (being specially the rear end face of external stator magnetic core 18) of stator 6, be fixed with the end plate 23 that the sheet metal by corrosion resistant plate etc. forms.For example, end plate 23 is fixed on the rear end face of stator 6 through welding.Reverse pumping goes out side bearing 9 and is fixed on the stator 6 through this end plate 23.Particularly, utilize a part and the end plate 23 of the rear end face of external stator magnetic core 18 in the axial direction the part of flange part 9a to be clamped, thus reverse pumping is gone out side bearing 9 and be fixed on the stator 6.
(formation of framework, outlet side bearing and leaf spring)
Fig. 2 is the figure from the E-E direction indication motor 1 of Fig. 1.Fig. 3 is the figure from the E-E direction indication framework 7 of Fig. 1.Fig. 4 is the sketch map of outlet side bearing 8 shown in Figure 1, (A) is front view, (B) is the profile of the H-H section of (A), (C) is rearview, (D) is upward view.Fig. 5 is the sketch map of leaf spring 10 shown in Figure 1, (A) is front view, (B) is end view, (C) is the profile of the J-J section of (A).Fig. 6 is the enlarged drawing of the K part of Fig. 1, (A) is the figure of the state when high such as the parts precision of expression outlet side bearing 8 grades, (B) is the figure of the state when low such as the parts precision of expression outlet side bearing 8 grades.
The framework 7 of this mode forms through pressure processing.Particularly, form framework 7 through the Punching Technology (press blanking processing) and the processing of bending.For example, form the profile of bottom surface sections 7a and side surface part 7b, 7c, then, side surface part 7b, 7c are roughly 90 ° of ground bendings with respect to bottom surface sections 7a through the processing of bending through Punching Technology, thus formation framework 7.In addition, in this mode, the inserting hole 7d of side surface part 7b and the dead eye 7e of side surface part 7c, the Punching Technology when forming the profile of bottom surface sections 7a and side surface part 7b, 7c forms.
In the Punching Technology of framework 7, from the bending direction of framework 7 outside towards the inboard die cut frames 7 of bending direction.That is, when Punching Technology, side surface part 7c goes out side 7j from the output side 7h that is configured in outlet side towards the reverse pumping that is configured in anti-outlet side to carry out die-cut and form.Therefore, dead eye 7e goes out side 7j from output side 7h towards reverse pumping to carry out die-cut and form when Punching Technology.In addition, the end of output side 7h (being specially the edge part of upper end, right ends portion and dead eye 7e of the output side 7h) angle of collapsing (rollover) portion of forming when becoming Punching Technology.In addition, reverse pumping goes out the overlap portion (burr portion) that the end (being specially the edge part that reverse pumping goes out upper end, right ends portion and the dead eye 7e of side 7j) of side 7j forms when becoming Punching Technology.
As shown in Figure 4, on outlet side bearing 8, to be formed with the bearing recess 8a of the leading section 2a that inserts rotating shaft 2 towards the mode of front depression from the rear end face 8b of outlet side bearing 8.In addition, on outlet side bearing 8, to be formed with the configuration recess 8c of the part of configuration leaf spring 10 towards the mode of rear end side depression from front end face 8d.In addition, on outlet side bearing 8, be formed with and be used to suppress the crooked inhibition portion 8t of outlet side bearing 8 with respect to axially crooked (inclination) of rotating shaft 2.
Shown in Fig. 4 (C), the shape when bearing recess 8a is formed from end on observation is rounded, and the internal diameter of bearing recess 8a is a bit larger tham the external diameter of leading section 2a.In addition, the bottom surface 8e of bearing recess 8a is formed plane.In this mode, the inner peripheral surface 8f of bearing recess 8a is the leading section 2a of supporting rotating shaft 2 diametrically.In addition, in this mode, applied power towards rear end side through 10 pairs of outlet side bearings 8 of leaf spring, thereby by the bottom surface 8e leading section 2a of supporting rotating shaft 2 in the axial direction.
Shown in Fig. 4 (A), configuration recess 8c is formed roughly T shape.That is, on the outer peripheral portion of the front of outlet side bearing 8, be formed with towards front outstanding three jut 8g, 8h, 8j with the state of predetermined distance spaced apart in the circumferential direction.Particularly, be formed with three jut 8g～8j with 120 ° spacing roughly.In addition, between the jut 8g～8j on the circumferencial direction, the planar portions 8x that is formed with Yu axially intersects vertically, 8y, 8z.In addition, the outer peripheral face of jut 8g～8j constitutes the part of the outer peripheral face of outlet side bearing 8.
Shown in Fig. 4 (A), jut 8g is configured in the upper end side of outlet side bearing 8.Jut 8h is configured in the left side of the lower end side of outlet side bearing 8.Jut 8j is configured in the right side of the lower end side of outlet side bearing 8.Jut 8h and jut 8j are left and right symmetrically and form.In addition, planar portions 8x is formed between jut 8g and the jut 8h, and planar portions 8y is formed between jut 8g and the jut 8j, and planar portions 8z is formed between jut 8h and the jut 8j.
On the radial center position of configuration recess 8c, be formed with the spring abutting part 8r that connects with leaf spring 10.Spring abutting part 8r is formed towards protruding roughly coniform of the front of outlet side bearing 8.The projection amount of spring abutting part 8r is less than the overhang of jut 8g～8j.The front end 8s of spring abutting part 8r is formed smooth curved surface shape.In addition, front end 8s is configured in the center that the footpath of outlet side bearing 8 makes progress.In addition, in this mode, the space that is formed in the axial direction between the front end face 8d of planar portions 8x～8z and spring abutting part 8r and outlet side bearing 8 becomes configuration recess 8c.
The crooked inhibition 8t of portion be formed from the whole circumference of outlet side bearing 8 towards the radial outside of outlet side bearing 8 extend flange shape.The crooked inhibition 8t of portion of this mode forms circular.The external diameter of the crooked inhibition 8t of portion is greater than the internal diameter of the dead eye 7e of side surface part 7c.In addition, as shown in Figure 1, the crooked inhibition 8t of portion is formed on the rearward end of outlet side bearing 8, and is configured in the rear end side of side surface part 7c.Shown in Fig. 4 (B); The overhang t1 of the crooked inhibition 8t of portion; Less than between the inner peripheral surface 8f of the outer peripheral face of other parts except the crooked inhibition 8t of portion of outlet side bearing 8 and bearing recess 8a diametrically apart from t2; Wherein, the overhang t1 of the above-mentioned crooked inhibition 8t of the portion overhang that to be the crooked inhibition 8t of portion make progress in the footpath of outlet side bearing 8 at the outer peripheral face from other parts except the crooked inhibition 8t of portion of outlet side bearing 8.
In addition; Shown in Fig. 5 (C); Bearing abutting part 10b on position, two places by towards the rear end side bending, and by the bottom 10f that is configured in lower end side, be configured in the upper end 10g of upper end side and be configured in bottom 10f and upper end 10g between pars intermedia 10h constitute.In this mode, as shown in Figure 1, when being assembled into leaf spring 10 in the motor 1, bottom 10f is crooked, and the front end 8s of pars intermedia 10h and spring abutting part 8r connects.In addition, the upper end of upper end 10g in configuration recess 8c, be configured in specific output side bearing 8 the front end 8s of spring abutting part 8r more near the position of rear end side.
In this mode, as shown in Figure 6, at least a portion on the circumferencial direction of outlet side bearing 8, the reverse pumping of crooked inhibition 8t of portion and side surface part 7c goes out the gap S on being formed with axially between the 7j of side.Particularly; When the parts precision of outlet side bearing 8 grades is high when high (be specially geometric accuracy or the dimensional accuracy cylindricity or the external diameter of outlet side bearing 8 and the dimensional accuracy of internal diameter etc. of the outer peripheral face of outlet side bearing 8 and inner peripheral surface (more specifically for) of outlet side bearing 8 grades); Shown in Fig. 6 (A); In the gamut of the circumferencial direction of outlet side bearing 8, crooked inhibition 8t of portion and reverse pumping go out the gap S on being formed with axially between the 7j of side.
In addition; When the parts precision of outlet side bearing 8 grades is hanged down; Shown in Fig. 6 (B), because going out side 7j with respect to the part of the axial crooked inhibition 8t of portion of crooked a little one-tenth of rotating shaft 2 and reverse pumping, outlet side bearing 8 connects, therefore; On the part of the circumferencial direction of outlet side bearing 8, crooked inhibition 8t of portion and reverse pumping go out the gap S on being formed with axially between the 7j of side.
In addition; At the low and outlet side bearing 8 of the parts precision of outlet side bearing 8 grades during with respect to rotating shaft 2 axially crooked a little; The part and the reverse pumping that are formed the outer circumference end side sections (Outboard Sections radially) of the circular crooked inhibition 8t of portion go out side 7j and connect, and interior all one end side portion of the crooked inhibition 8t of portion (inside part radially) do not go out side 7j butt with reverse pumping.That is, when the part of the outer circumference end side sections of the crooked inhibition 8t of portion and reverse pumping go out side 7j and connect, go out between the 7j of side to be formed with the gap in interior all one end side portion and the reverse pumping of the crooked inhibition 8t of portion.In addition, in this mode, even under the state that protuberance 10c and planar portions 8x, 8y connect, also at least a portion on the circumferencial direction of outlet side bearing 8, crooked inhibition 8t of portion and reverse pumping go out the gap S on being formed with axially between the 7j of side.
In addition, in this mode, shown in Fig. 6 (B), go out side 7j through crooked inhibition 8t of portion and reverse pumping and offset to fetch and suppress outlet side bearing 8 axially crooked with respect to rotating shaft 2.In addition, the axial length of the leading section 2a of rotating shaft 2 is greater than the axial depth of the bearing recess 8a of outlet side bearing 8.Particularly; The axial length of the leading section 2a of rotating shaft 2 is set between the rear end face 8b of cascaded surface 2e and outlet side bearing 8 in the axial direction gap S 1 greater than gap S; Wherein, above-mentioned cascaded surface 2e is protuberance 2c except that leading section 2a and the border of leading section 2a.Therefore, connect even crooked inhibition 8t of portion and reverse pumping go out side 7j, cascaded surface 2e also not can with rear end face 8b butt.In addition, in this mode, the position at the Off-Radial center of bearing abutting part 10b and outlet side bearing 8 connects.Particularly, bearing abutting part 10b connects with the position of being partial to upside than the center of the front end 8s of spring abutting part 8r a little, thereby on outlet side bearing 8, produces the clockwise moment (moment) along Fig. 6.Therefore, when the parts precision of outlet side bearing 8 grades was hanged down, shown in Fig. 6 (B), the lower end side of the crooked inhibition 8t of portion and reverse pumping went out side 7j and connect.
(the main effect of this mode)
As above illustrated, in this mode, on outlet side bearing 8, be formed with the crooked inhibition 8t of portion, and go out side 7j through crooked inhibition 8t of portion and reverse pumping and offset and fetch that to suppress outlet side bearing 8 crooked with respect to axially.Therefore, even the parts precision of outlet side bearing 8 grades is low, also can utilize the crooked inhibition 8t of portion to suppress outlet side bearing 8 axially crooked with respect to rotating shaft 2.That is, as shown in Figure 7, under the situation of the outlet side bearing 58 that is not formed with the crooked inhibition 8t of portion; When the parts precision of outlet side bearing 58 was hanged down, outlet side bearing 58 was significantly crooked, still; In this mode,,, crooked inhibition 8t of portion and reverse pumping connect because going out side 7j even the parts precision of outlet side bearing 8 grades is low; Therefore, shown in Fig. 6 (B), also can suppress the crooked of outlet side bearing 8.
Therefore, in this mode, the contact area of bearing recess 8a of leading section 2a and the outlet side bearing 8 of rotating shaft 2 can be dwindled, thereby the resistance to sliding of bearing recess 8a of leading section 2a and the outlet side bearing 8 of rotating shaft 2 can be reduced.In addition, can guarantee that outlet side bearing 8 and reverse pumping go out the axiality of side bearing 9.Consequently, in this mode, can suppress the reduction of the output torque of motor 1.
In this mode, at least a portion on the circumferencial direction of outlet side bearing 8, crooked inhibition 8t of portion and reverse pumping go out the gap S on being formed with axially between the 7j of side, and the crooked inhibition 8t of portion goes out the complete butt of side 7j with reverse pumping.Therefore, even on outlet side bearing 8, be formed with the crooked inhibition 8t of portion, the distolateral forward masterpiece of present dynasty is used for 4 last times of rotor, and rotor 4 also together moves towards front with outlet side bearing 8.Therefore, in this mode, the active force of leaf spring 10 is acted on the outlet side bearing 8, consequently, the active force of leaf spring 10 is acted on the rotor 4.
In addition; In this mode; Even under the state that protuberance 10c and planar portions 8x, 8y connect; Also at least a portion on the circumferencial direction of outlet side bearing 8, crooked inhibition 8t of portion and reverse pumping go out the gap S on being formed with axially between the 7j of side, and the crooked inhibition 8t of portion goes out the complete butt of side 7j with reverse pumping.Therefore, in this mode, can prevent that outlet side bearing 8 from coming off towards front from dead eye 7e, and, the active force of leaf spring 10 is acted on the outlet side bearing 8, thereby the active force of leaf spring 10 is acted on the rotor 4.
In this mode, the crooked inhibition 8t of portion is formed on the rearward end of outlet side bearing 8.2 therefore, when assembling motor 1, can be mark and outlet side bearing 8 is configured among the dead eye 7e with the crooked inhibition 8t of portion.Therefore, in this mode,, also can prevent outlet side bearing 8 oppositely is assembled among the dead eye 7e even for example outlet side bearing 8 is very little.
(other execution modes)
Aforesaid way is an example of suitable way of the present invention, but is not limited to this, in the scope that does not change main idea of the present invention, can carry out various distortion and implement.
In aforesaid way, the crooked inhibition 8t of portion is formed on the rearward end of outlet side bearing 8, and is configured in the rear end side of side surface part 7c.In addition for example, the crooked inhibition 8t of portion also can be formed on the leading section of outlet side bearing 8, and is configured in the front of side surface part 7c.Under this situation, can the rear end side of outlet side bearing 8 be shortened and the corresponding length of the crooked inhibition 8t of portion part, thereby can increase the length of leading screw 2d.In addition, under this situation, at least a portion on the circumferencial direction of outlet side bearing 8, the gap S on being formed with axially between the output side 7h of crooked inhibition 8t of portion and side surface part 7c.
In aforesaid way, the crooked inhibition 8t of portion is formed circular, and still, the crooked inhibition 8t of portion both can form the polygonal ring-type of four square ring shapes or hexagonal ring-type etc., also can form oval ring-type.In addition; In aforesaid way; The crooked inhibition 8t of portion be formed from the whole circumference of outlet side bearing 8 towards the radial outside of outlet side bearing 8 extend flange shape; But, also can on outlet side bearing 8, form towards the outstanding a plurality of crooked inhibition 8t of portion of the radial outside of outlet side bearing 8 with the state that separates predetermined distance along the circumferencial direction of outlet side bearing 8.In addition, compare with the situation that the state that separates predetermined distance forms a plurality of crooked inhibition 8t of portion, the crooked inhibition 8t of portion is being formed when flange shape, can improve the intensity of the crooked inhibition 8t of portion with circumferencial direction along outlet side bearing 8.
In aforesaid way, outlet side bearing 8 is the sliding bearings that can move vertically, still, also can be to make reverse pumping go out the sliding bearing of side bearing 9 for moving vertically.Under this situation, reverse pumping goes out side bearing 9 and can be kept movably vertically through the bearing holding member cylindraceous (bearing maintaining part) that is for example formed by resin material etc., and outlet side bearing 8 is fixed on the side surface part 7c.In addition; Under this situation; Go out to be formed with on the side bearing 9 in reverse pumping and be used to suppress reverse pumping and go out the axial crooked crooked inhibition portion of side bearing 9, and offset to fetch through this crooked inhibition portion and bearing holding member and suppress reverse pumping and go out side bearing 9 axially crooked with respect to rotating shaft 2 with respect to rotating shaft 2.In addition, the crooked inhibition portion under this situation both can be formed on the rearward end that reverse pumping goes out side bearing 9, also can be formed on the leading section that reverse pumping goes out side bearing 9.
In aforesaid way, protuberance 10c and jut 8g～8j performance prevents the effect of outlet side bearing 8 with respect to side surface part 7c rotation.In addition for example; Also can on the crooked inhibition 8t of portion, form towards axially outstanding projection; Go out on the 7j of side mode with depression in the reverse pumping of side surface part 7c and form the recess with this protrusions snap, and prevent that through this projection and recess outlet side bearing 8 from rotating with respect to side surface part 7c.
In aforesaid way, framework 7 is formed by sheet metal, and still, framework 7 also can be formed by resin.In addition; In aforesaid way; Outlet side bearing 8 is directly remained among the side surface part 7c of framework 7; But, also can on side surface part 7c, fix the bearing holding member cylindraceous (bearing maintaining part) that for example forms, and outlet side bearing 8 is remained in this bearing holding member with the mode that can move vertically by resin material etc.
In aforesaid way, apply power towards anti-outlet side through 10 pairs of outlet side bearings 8 of leaf spring.In addition for example, also can apply power to outlet side bearing 8 through compression helical spring or butterfly spring etc. towards anti-outlet side.Under this situation, compression helical spring or butterfly spring etc. is configured to connect with the front end 8s of spring abutting part 8r.In addition, in this case, for example on the 7h of the output side of framework 7, be fixed with the holding member that keeps compression helical spring or butterfly spring etc.
Claims (13)
1. motor is characterized in that possessing:
Rotor, it is provided with rotating shaft;
Stator, it is configured in the outer circumferential side of said rotor;
Sliding bearing, it supports the end of anti-outlet side of end or said rotating shaft of the outlet side of said rotating shaft, and can moving axially along said rotating shaft;
Force application part, it applies towards said axial power said sliding bearing; And
The bearing maintaining part, it can keep said sliding bearing along said with moving axially;
On said sliding bearing, to be formed with crooked inhibition portion towards the outstanding mode of the radial outside of said sliding bearing, wherein, it is axially crooked with respect to said that said crooked inhibition portion is used to suppress said sliding bearing;
On at least a portion on the circumferencial direction of said sliding bearing, be formed with said gap on axially between said crooked inhibition portion and the said bearing maintaining part;
Said crooked inhibition portion and said bearing maintaining part connect, and it is axially crooked with respect to said to suppress said sliding bearing thus.
2. motor as claimed in claim 1 is characterized in that,
The outlet side that is provided with at said rotating shaft is fixed on the framework on the said stator;
Said sliding bearing is the outlet side bearing of end of the outlet side of the said rotating shaft of supporting;
Said bearing maintaining part is formed on the said framework;
On said bearing maintaining part, be formed with the dead eye that connects said bearing maintaining part and dispose said sliding bearing;
Said force application part applies the power towards the anti-outlet side of said rotating shaft to said sliding bearing.
3. motor as claimed in claim 2 is characterized in that,
On said force application part, be formed with anti-shedding part, said anti-shedding part and said sliding bearing connect and prevent that said sliding bearing from coming off from the outlet side of said dead eye towards said rotating shaft;
Even under the state that said anti-shedding part and said sliding bearing connect, also at least a portion on the circumferencial direction of said sliding bearing, be formed with said gap on axially between said crooked inhibition portion and the said bearing maintaining part.
4. like claim 2 or 3 described motor, it is characterized in that,
The reverse pumping that said crooked inhibition portion is formed on said said sliding bearing on axially goes out distolateral, and is configured in the anti-outlet side of said said bearing maintaining part on axially.
5. like claim 2 or 3 described motor, it is characterized in that,
Said crooked inhibition portion is formed on the output end of said said sliding bearing on axially, and is configured in the outlet side of said said bearing maintaining part on axially.
6. like each described motor in the claim 1～3, it is characterized in that,
Said crooked inhibition portion be formed from the whole circumference of said sliding bearing extend towards the said outside radially flange shape.
7. like each described motor in the claim 1～3, it is characterized in that,
When the part of the Outboard Sections of the said crooked inhibition portion that makes progress in said footpath and said bearing maintaining part connect, be formed with said gap on axially between the inside part of the said crooked inhibition portion that makes progress in said footpath and the said bearing maintaining part.
8. motor as claimed in claim 7 is characterized in that,
On said bearing maintaining part, be formed with the dead eye that connects said bearing maintaining part and dispose said sliding bearing,
Said dead eye forms through carrying out die-cut Punching Technology towards said crooked inhibition portion side.
9. like each described motor in the claim 1～3, it is characterized in that,
On said force application part, be formed with and connect with said sliding bearing and said sliding bearing is applied the bearing abutting part towards said axial power,
The position of departing from said radial center of said bearing abutting part and said sliding bearing connects.
10. like each described motor in the claim 1～3, it is characterized in that,
On said sliding bearing; Mode with depression is formed with the bearing recess that configuration outlet side end or reverse pumping go out side end; Wherein, said outlet side end is the end of the outlet side of said rotating shaft, and said reverse pumping goes out the end that side end is the anti-outlet side of said rotating shaft;
Said outlet side end or said reverse pumping go out side end and upwards are supported in the said bearing recess in said axial and said footpath.
11. like each described motor in the claim 1～3, it is characterized in that,
Said sliding bearing is the outlet side bearing of supporting outlet side end, and wherein, said outlet side end is the end of the outlet side of said rotating shaft;
On said sliding bearing, to be formed with the bearing recess of the said outlet side of configuration end towards the mode of outlet side depression from the end face of the anti-outlet side of said sliding bearing;
The diameter of said outlet side end is less than the diameter of other parts except said outlet side end of the outlet side of said rotating shaft, is formed with cascaded surface at other portion boundary places except said outlet side end of the outlet side of said outlet side end and said rotating shaft;
Said gap on axially between the end face of the anti-outlet side of said cascaded surface and said sliding bearing is greater than the gap on said axial between said crooked inhibition portion and the said bearing maintaining part.
12. like each described motor in the claim 1～3, it is characterized in that,
Said sliding bearing is the outlet side bearing of supporting outlet side end, and wherein, said outlet side end is the end of the outlet side of said rotating shaft;
On said sliding bearing, to be formed with the bearing recess of the said outlet side of configuration end towards the mode of outlet side depression from the end face of the anti-outlet side of said sliding bearing;
Said crooked inhibition portion is formed from the outer peripheral face of other parts except said crooked inhibition portion of said sliding bearing extends towards the said outside radially;
The overhang of said crooked inhibition portion; The distance that makes progress in said footpath between the inner peripheral surface less than the outer peripheral face of other parts except said crooked inhibition portion of said sliding bearing and said bearing recess; Wherein, the overhang of the said crooked inhibition portion overhang that to be said crooked inhibition portion make progress in said footpath from the outer peripheral face of other parts except said crooked inhibition portion of said sliding bearing.
13. like each described motor in the claim 1～3, it is characterized in that,
The reverse pumping that is provided with the end of the anti-outlet side that supports said rotating shaft goes out side bearing;
Said sliding bearing is the outlet side bearing of end of the outlet side of the said rotating shaft of supporting;
Said force application part applies the power towards the anti-outlet side of said rotating shaft to said sliding bearing;
Go out on the side bearing in said reverse pumping, the reverse pumping of end that is formed with the anti-outlet side of the said rotating shaft of configuration with the end face of the outlet side that goes out side bearing from said reverse pumping towards the mode of anti-outlet side depression goes out the side bearing recess;
The bottom surface that said reverse pumping goes out the anti-outlet side of side bearing recess is formed coniform or pyramidal.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011104304A JP2012235662A (en) | 2011-05-09 | 2011-05-09 | Motor |
| JP2011-104304 | 2011-05-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102780307A true CN102780307A (en) | 2012-11-14 |
Family
ID=47125108
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201879953U Expired - Fee Related CN202565081U (en) | 2011-05-09 | 2012-04-27 | Motor |
| CN2012101289607A Pending CN102780307A (en) | 2011-05-09 | 2012-04-27 | Electromotor |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201879953U Expired - Fee Related CN202565081U (en) | 2011-05-09 | 2012-04-27 | Motor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2012235662A (en) |
| CN (2) | CN202565081U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012235662A (en) * | 2011-05-09 | 2012-11-29 | Nidec Sankyo Corp | Motor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200527402A (en) * | 2004-02-10 | 2005-08-16 | Delta Electronics Inc | Guiding mechanism |
| CN1713493A (en) * | 2004-06-25 | 2005-12-28 | 株式会社三协精机制作所 | Motor |
| CN1767326A (en) * | 2004-10-29 | 2006-05-03 | 日本电产三协株式会社 | Motor |
| US20070085433A1 (en) * | 2005-10-13 | 2007-04-19 | Ikuo Agematsu | Motor |
| CN101621240A (en) * | 2008-07-01 | 2010-01-06 | 日本电产三协株式会社 | Motor |
| CN202565081U (en) * | 2011-05-09 | 2012-11-28 | 日本电产三协株式会社 | Motor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3399368B2 (en) * | 1998-06-29 | 2003-04-21 | セイコーエプソン株式会社 | Motor with screw |
| JP4545043B2 (en) * | 2005-05-27 | 2010-09-15 | 京セラミタ株式会社 | Bearing device |
| JP2009124867A (en) * | 2007-11-15 | 2009-06-04 | Nidec Sankyo Corp | Motor |
| JP5264322B2 (en) * | 2008-07-01 | 2013-08-14 | 日本電産サンキョー株式会社 | motor |
-
2011
- 2011-05-09 JP JP2011104304A patent/JP2012235662A/en active Pending
-
2012
- 2012-04-27 CN CN2012201879953U patent/CN202565081U/en not_active Expired - Fee Related
- 2012-04-27 CN CN2012101289607A patent/CN102780307A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200527402A (en) * | 2004-02-10 | 2005-08-16 | Delta Electronics Inc | Guiding mechanism |
| CN1713493A (en) * | 2004-06-25 | 2005-12-28 | 株式会社三协精机制作所 | Motor |
| CN1767326A (en) * | 2004-10-29 | 2006-05-03 | 日本电产三协株式会社 | Motor |
| US20070085433A1 (en) * | 2005-10-13 | 2007-04-19 | Ikuo Agematsu | Motor |
| CN101621240A (en) * | 2008-07-01 | 2010-01-06 | 日本电产三协株式会社 | Motor |
| CN202565081U (en) * | 2011-05-09 | 2012-11-28 | 日本电产三协株式会社 | Motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN202565081U (en) | 2012-11-28 |
| JP2012235662A (en) | 2012-11-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101064445B (en) | Motor | |
| CN101621240B (en) | Motor | |
| CN100525023C (en) | Small motor | |
| CN102044920A (en) | Rotor for motor and motor | |
| JP2007166799A (en) | Inner rotor type brushless motor | |
| US20060085807A1 (en) | Spindle motor and disk drive device | |
| CN101682217A (en) | Small motor of quadrangular external shape | |
| KR100832633B1 (en) | Ultra slim spindle motor | |
| CN101621241B (en) | Motor | |
| JP2006046604A (en) | Hydrodynamic bearing device, motor and disc driving device | |
| CN202565081U (en) | Motor | |
| US20030168923A1 (en) | Motor with magnetic attraction member | |
| CN101009452A (en) | Motor and manufacturing method therefor | |
| CN202565048U (en) | Motor | |
| JP5487020B2 (en) | Rotating electric machine | |
| KR20090086308A (en) | Motor apparatus | |
| US20190356186A1 (en) | Rotor and motor | |
| JP2001084684A (en) | Disk driving device | |
| CN102315752A (en) | Stepping motor | |
| JP2011114975A (en) | Compact coreless motor | |
| KR101761335B1 (en) | Spindle motor | |
| KR20130073386A (en) | Spindle motor | |
| JP5185385B2 (en) | Stepping motor | |
| JP2015033215A (en) | Motor | |
| JP2004289881A (en) | Motor and recording medium driving gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121114 |