JP3052078B2 - Motor and rotating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor and a rotating device, and more particularly, to an axial air gap type motor and a rotating device which generate less vibration and noise during rotation.

[0002]

2. Description of the Related Art Conventionally, an axial air gap type motor has been widely known, and is used for a rotary polygon mirror device such as a laser printer, a copying machine, and an image setter for producing a block. This axial air gap type motor includes a stator to which an armature coil is fixed, and a rotor to which a rotor magnet energized by the armature coil is fixed. It is constituted so that it may face.

FIG. 4 is a sectional view showing a rotary polygon mirror device for rotating a rotary polygon mirror (polygon mirror) by such a conventional axial air gap type motor.
As shown in FIG. 4, a stator of a motor according to the prior art includes a base 112 on which a fixed shaft 111 is erected, and a resin printed board 11 screwed to the base 112.
4, a coreless armature coil 113 to which a current is supplied from a printed circuit board 114, a yoke 116 fixed to the base 112 to form a magnetic path of a magnetic force generated by the coreless armature coil 113, and between the armature coil 113 and the yoke 116. And an insulating sheet 115 interposed therebetween.

The rotor of the motor includes a support member 121 rotatably supported by a bearing 130 about a fixed shaft 111 as an axis, and a rotor magnet 122 fixed to the support member 121. A rotating polygon mirror 140 is fixed to an upper part of the member 121. The rotor magnet 122 is a coreless armature coil 1 of a stator.
13 is disposed so as to face the axial direction of the rotation of the rotor. And coreless amateur coil 1
The rotor magnet 122 is urged by the rotating magnetic field formed by the yoke 116 and the rotor 13, and the rotor rotates with respect to the stator.

Such a conventional motor includes, for example, an anti-folding mirror for reflecting light reflected from the rotary polygon mirror of the rotary polygon mirror device and an Fθ lens for adjusting the focal length in the rotary polygon mirror device described above. There is a case where a base is fitted to a fitting portion provided in a casing of a resinous unit and used as a part of a unit such as an optical unit in which members are integrally formed into a cassette. The axial air gap type motor can be formed to be thin in the axial direction, and is expected to be able to meet the recent demand for miniaturization of various devices and devices such as various OA devices.

[0006]

However, in the conventional axial air gap type motor as described above,
The coreless armature coil 113 vibrates due to a change in the magnetic field caused by the coreless armature coil 113 during rotation. This vibration propagates to the printed circuit board 114,
Noise is generated on the printed circuit board 114. Also,
The vibration of the printed circuit board 114 propagates to the base 112 directly or via a screw, and also generates noise in the base 112. When this motor is incorporated in a unit and used, the casing of the unit is made of a lightweight member such as plastic, so that noise is amplified more than when only the motor is used. In addition, when the casing vibrates, other members such as a folding mirror and an fθ lens supported by the casing together with the motor vibrate, which causes image disturbance and a decrease in image accuracy. As described above, regarding the motor used by being incorporated in the unit, vibration during rotation not only generates noise, but also adversely affects other members via the casing of the unit. Is desired.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a motor and a rotating body device that generate less vibration and noise during rotation.

[0008]

SUMMARY OF THE INVENTION The present invention provides a casing
A mounting flange to be mounted and a connection that absorbs vibration
A base fixed to the mounting flange by a coating ,
A support member rotatably supported with respect to the base, a printed circuit board arranged in the axial direction of the support member, and mounted on the base, and an armature coil fixed to a substrate surface of the printed circuit board. to achieve the above object by providing a motor having a rotor magnet which is supported by the support member so as to face in the axial direction as the armature coil.

In the motor of the present invention, the mounting
Since the vibration absorbing adhesive layer is interposed between the flange and the base, the vibration of the base is absorbed by the adhesive layer and is prevented from propagating to the outer frame. Further, since the base is fixed to the outer frame by this adhesive layer, it is not necessary to use a fastening member such as a screw to support the base on the mounting flange ,
The vibration of the base is prevented from being transmitted to the outer frame via the fastening member. Then, the vibration of the base is prevented from being propagated and the outer frame is prevented from vibrating, so that the mounting
Noise caused by vibration of the nozzle can be suppressed. In the motor of the present invention, it is preferable that the base is separated from the mounting flange by an adhesive layer and a separating member having vibration absorption.

Further, the vibration absorbing member may take a base
It is preferable to be provided over the entire circumference of the portion facing the mounting flange . Thus, full vibration of the base is attached
It is possible to reliably prevent from propagating back flange, facing portions of the base and the mounting flange are sealed, it is possible to prevent the noise from leaking due to the vibration of the base and the printed circuit board from the opposite unit.

[0011] The present invention achieves the above object by providing a rotating body device provided with the motor of the present invention.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an axial sectional view showing a rotary polygon mirror device as one embodiment of a rotary body device of the present invention, FIG. 2 is a plan view of the rotary polygon mirror device, and FIG. FIG. 3 is a sectional view taken along line BB.

In the rotary polygon mirror device of the present embodiment, together with the rotary polygon mirror device, members such as an anti-folding mirror for reflecting the reflected light from the rotary polygon mirror and an Fθ lens for adjusting the focal length are integrated into a cassette. The optical unit is used by being fitted to a fitting portion provided in a casing of the optical unit.

As shown in FIG. 1, the rotary polygon mirror device of the present embodiment includes a motor as one embodiment of the present invention, and a rotary polygon mirror 40 rotated by the motor. The motor includes a stator 1 having a fixed shaft bolt 11.
0, a rotor 20, and a bearing 30. The rotor 20 is supported by the bearing 30 so as to be rotatable with respect to the stator 10 with the fixed shaft bolt 11 as an axis.

The stator 10 includes a mounting flange 19 fitted to the casing of the optical unit, a base 12 supported by the mounting flange 19, an annular printed circuit board 14 fixed to the base 12, A coreless armature coil 13 fixed to a printed circuit board 14 and supplied with current from the printed circuit board 14;
And a yoke 16 which forms a circuit of magnetic flux according to the present invention.

The mounting flange 19 has a box shape with an open bottom surface, and a fitting hole is formed in the center of the top surface 19a. The base 1 is mounted in the mounting flange 19.
2 is fitted, and one end edge of the base 12 is exposed upward from the fitting hole of the top surface 10a. The inner peripheral surface of the fitting hole, the lower surface of the top surface 19a, and the inner peripheral surface of the side wall 19b of the mounting flange 19 face the base 12.

A spacer 51 made of silicone rubber, which is a vibration absorbing member, is interposed between the lower surface of the top surface 19a of the mounting flange 19 and the base 12. The spacer 51 is used to prevent the mounting flange 19 and the base 12 from directly contacting each other by functioning as an interval maintaining means for maintaining a predetermined interval between the mounting flange 19 and the base 12. The mounting flange 19
Positioning (fixing height) when adhesively fixing the base and the base 12
Also used for Therefore, in the present embodiment, the spacer 51 is annularly disposed over the entire circumference between the top surface 19a and the base 12, but need not necessarily be disposed over the entire circumference. Small pieces of the spacer 51 may be arranged at a plurality of locations. By arranging the small pieces in this manner, the vibration-absorbing adhesives 52a and 52b flow between the small pieces so as to be continuous, and it is possible to increase the bonding area.

The inner peripheral surface 19c of the fitting hole of the top surface 19a and the inner peripheral surface 19c of the side wall 19b and the base 12 are fixed by vibration absorbing adhesives 52a and 52b, as shown in FIGS. As shown in FIG. 3, the vibration-absorbing adhesives 52a, 52
By 2b, the periphery of the base 12 is fixed to the mounting flange 19 over the entire circumference. Thus, the base 12
Is a vibration absorbing adhesive 52
It is fixed and supported via a, b or a spacer 51 so that there is no portion where the base 12 and the mounting flange 19 directly contact. Thereby, the base 12 and the mounting flange 19 are isolated from each other against vibration.

The vibration absorbing adhesives 52a and 52b are
When the rotor 20 rotates, the mounting flange 1 is attached from the base 12.
Any adhesive may be used as long as the adhesive has elasticity capable of absorbing the vibration transmitted to the base 9. One-part RT mixed with flame-retardant material such as aluminum powder in view of good durability
Silicone adhesives such as Y rubber adhesives are preferred.
Further, a material having a low viscosity is preferable in that it easily enters between the mounting flange 19 and the base 12, and a stronger adhesiveness is exhibited. Further, since it is difficult to corrode metal, a deacetone type or a dealcohol type is preferable. Are preferred. In this embodiment, KE-3494 (manufactured by Shin-Etsu Chemical Co., Ltd.) is used from these points. This base 12
After placing the spacer 51 on the outer peripheral edge of the base 12,
Covering the mounting flange 19 from above, exposing one end edge of the base 12 from the fitting hole of the mounting flange 19,
The vibration absorbing adhesives 52a and 52b are poured from above and below between the base 12 and the mounting flange 19 and dried to be fixed to the mounting flange 19.

A center hole is formed in the center of the base 12, into which a fixed shaft bolt 11 is fitted with the bolt head upward, and the screw portion 11a at the tip is directed downward. It is erected from 12.

On the top surface of the base 12, fins 18 for heat radiation are provided.
Are set up upward. This fin 18
Is substantially rod-shaped, and regardless of the structure of the optical unit to which the rotating polygon mirror device is attached or the direction of attachment of the rotating polygon mirror device, a lateral wind blows well between the fins 18 to efficiently radiate heat. It has become. Further, as shown in FIG. 1, the base 12 has an annular concave portion 12a which is depressed toward the top surface centering on the center hole. Further, a lead wire 61 and a connector 62 for supplying a current from a power supply to the printed circuit board 14 are provided on the base 12.
Is formed through the recess 12a to the outside during assembly, and a lead wire 61 is inserted into the communication hole 12d. The portion other than the lead wire 61 of the communication hole 12d is sealed with a stopper 63 made of silicone rubber as a vibration absorbing member and a vibration absorbing adhesive 52e.

The printed circuit board 14 has an insertion hole 14a at the center.
And is bridged between the inner peripheral edge and the outer peripheral edge of the concave portion 12 a of the base 12. The inner peripheral edge of the printed circuit board 14 (the peripheral edge of the insertion hole 14a) faces the inner peripheral edge of the concave portion 12a of the base 12, and is fixed to the inner peripheral edge of the concave portion 12a of the base 12 by vibration absorbing adhesive 52d. Have been.

The outer peripheral edge of the printed circuit board 14 is
Of the recess 12a. A sheet (silicone rubber sheet) 53 made of a vibration absorbing member is sandwiched between the upper surface of the outer peripheral edge of the printed board 14 and the base 12. The silicone rubber sheet 53 functions as an interval holding unit that holds a predetermined interval between the base 12 and the printed circuit board 14, and thereby the base 1
2 is used to prevent direct contact with the printed circuit board 14. It is also used for positioning (height determination) when the base 12 and the printed board 14 are bonded and fixed. Accordingly, in the present embodiment, the silicone rubber sheet 53 is arranged in a ring shape over the entire periphery of the outer peripheral edge of the printed circuit board 14. However, the silicone rubber sheet 53 is not necessarily arranged over the entire periphery. The small pieces of the rubber sheet 53 may be arranged at a plurality of locations. By arranging the small pieces in this manner, the vibration-absorbing adhesives 52c and 52d flow between the small pieces so as to be continuous, and it is possible to increase the bonding area.

As shown in FIG. 3, the outer peripheral surface of the printed circuit board 14 is fixed to the base 12 with a vibration absorbing adhesive 52c. Thus, the printed circuit board 14 is mounted on the base 12.
Be sure to use the vibration-absorbing adhesive 52c or 52d or silicon
The printed circuit board 14 and the base 12 are not directly in contact with each other, and are fixed and supported via a rubber sheet 53. Therefore, the printed circuit board 14 and the base 12 are isolated from each other with respect to vibration. The printed circuit board 14 is formed by disposing the base 12 upside down so that the recess 12
b After placing the silicone rubber sheet 53 on the peripheral edge and placing the printed circuit board 14 thereon, the vibration absorbing adhesives 52c and 52d are inserted between the printed circuit board 14 and the base 12, It is fixed to the base 12.

The vibration absorbing adhesives 52c and 52d are:
Any adhesive may be used as long as the adhesive has elasticity capable of absorbing the vibration of the printed circuit board 14 generated when the rotor 20 rotates, but it absorbs the vibration well, maintains the position accuracy of the printed circuit board relative to the base, and A silicone adhesive such as a one-component RTY rubber adhesive mixed with a flame-retardant material such as aluminum powder is preferable from the viewpoint of exhibiting good durability against heat generation in the inside. The base 12 and the printed circuit board 1
A low-viscosity adhesive is preferable in that it easily penetrates into the gap with No. 4 and exhibits higher adhesiveness, and a deacetone-type or dealcohol-type adhesive is more preferable in that it does not easily corrode metal. In the present embodiment, from these points, KE
-3494 (Shin-Etsu Chemical Co., Ltd.) is used. In the present embodiment, a dynamic pressure bearing is used, and in order to prevent dust from being generated due to deterioration and entering the bearing 30, an adhesive having high heat resistance as described above is particularly preferably used.

As shown in FIG. 1, the printed circuit board 14
The coreless amateur coil 13 is provided on the base 12 side.
Are fixed, and a yoke 16 is fixed to the armature coil 13. The armature coil 13 and the yoke 16 are formed in a concave portion 12 formed in the base 12.
a, and the yoke 16 faces the base 12. A silicone-based adhesive layer 17 is formed on the base 12 side of the yoke 16, and the yoke 16 and the base 12 are bonded and fixed by the silicone-based adhesive layer 17, and the heat from the armature coil 13 is generated. Is radiated from the silicone-based adhesive layer 17 via the yoke 16. The silicone-based adhesive forming the silicone-based adhesive layer 17 preferably has good vibration absorption, heat dissipation, and heat resistance, and is a one-component RTY rubber-based rubber kneaded with a flame-retardant material such as aluminum powder. An adhesive is preferably used.

The bearing 30 includes an inner cylindrical member 31 and two disk plates 32 as a bearing on the stator 10 side, an outer cylindrical member 33 as a bearing on the rotor 20 side, and air dynamic pressure generating means (not shown). Contains. The inner cylinder member 31, the disk plate 32, and the outer cylinder member 33 are made of ceramic. The fixed shaft bolt 11 is inserted through the hollow portion of the inner cylinder member 31. The disc plate 32 has a fitting hole in the center, and the fixed shaft bolt 11 is inserted into the fitting hole at the upper and lower edges of the inner cylindrical member 31 in the axial direction from the fixed shaft bolt 11. It has spread. The outer cylinder member 33 is coaxial with the fixed shaft bolt 11 and the inner cylinder member 3.
1 and is rotatably held by two disk plates 32. And the outer cylinder member 33
The support member 21 of the rotor 20 is fixed to the
The support member 21 rotates with the rotation of.

The air dynamic pressure generating means generates the air dynamic pressure between the bearing on the stator 10 side and the bearing on the rotor 20 when the rotor 20 rotates, thereby supporting the rotor 20. The air dynamic pressure generating means may support the rotor 20 in the radial direction by providing a groove on the outer peripheral surface of the inner cylindrical member 31 or the inner peripheral surface of the outer cylindrical member 33, Conventionally known means such as forming the inner peripheral surface of the outer cylindrical member 33 into a non-circular cross section in the radial direction or disposing a segment on the outer peripheral surface of the inner cylindrical member 31 or the inner peripheral surface of the outer cylindrical member 33 are not particularly limited. Can be used. In addition, as a means for supporting the rotor 20 in the axial direction, a conventionally known method such as providing a groove on the outer cylindrical member 33 facing surface of the disk plate 32 or an end surface of the outer cylindrical member 33 can be used without limitation. .

A counter plate 35 having an insertion hole is provided on the disk plate 32 on the lower side in the drawing.
1 is contacted from above with the insertion hole being inserted. A nut 55 is screwed into the screw portion 11a of the fixed shaft bolt 11 from below the counter plate 35, and the counter plate 35, the lower disk plate 32, the inner cylindrical member 31, the upper disk plate 32, and The bases 12 are fastened and fixed to each other. A counter magnet 34 is fixed to a surface of the counter plate 35 on the support member 21 side.

The rotor 20 includes an outer cylindrical member 33 of the bearing 30.
, A rotor magnet 22 fixedly supported by the support member 21, and a counter yoke 36
And a holding spring 37 for supporting the rotary polygon mirror 40 on the support member 21. The support member 21 includes a rotor magnet support 21a that extends in the radial direction, and the rotor magnet 22 is supported above the rotor magnet support 21. The rotor magnet 22 is a radially anisotropic cylindrical magnet, and the armature coil 1 is arranged in the axial direction via the printed circuit board 14.
3, the rotor magnet 22 is urged by a magnetic field formed by the armature coil 13, and the rotor 20 and the bearing on the rotor 20 side rotate.

The counter yoke 36 is opposed to the counter magnet 34 fixed to the counter plate 35, generates a magnetic attractive force between the counter magnet 24 and the counter yoke 26, and when no air dynamic pressure is generated ( At a low rotation speed), the outer cylinder member 33 is pulled back downward against the magnetic attraction force between the armature coil 13 and the rotor magnet 22 to avoid contact between the outer cylinder member 33 and the disk plate 32 to thereby reduce friction. And so on to prevent damage.

The pressing spring 37 includes an annular portion 37a and a mirror pressing piece 37b extending radially from the annular portion 37a.
The annular portion 37a is screwed to the support member 21 from below, and the mirror pressing piece 37b is
Each corner of the rotor magnet support portion 21a of the support member 21
To rotate the polygon mirror 40 to the rotor magnet support 2.
1a.

As shown in FIG. 3, the rotating polygon mirror 40 is a polygonal mirror having a plurality of mirror surfaces formed on its outer peripheral surface, such as a regular polygon having a regular cross section in the radial direction, for example, a regular hexagon or regular octagon. ), And a support member 2 is provided at the center thereof.
1 is provided with a fitting hole. The rotary polygon mirror 40 is fixedly supported by the support member 21 by the mirror pressing piece 37b with the fitting hole fitted in the support member 21, and rotates with the support member 21.

The top surface 19 of the mounting flange 19
a is provided with cover screw holes 19e at four corners.
A cover 18 having a transparent window 18a is screwed to the mounting flange 19 from below so as to cover the rotor 20 and the rotary polygon mirror 40. The laser beam emitted from the outside passes through the window 18a and is reflected by the rotating polygon mirror and is reflected by the reflecting mirror.

As described above, in the present embodiment, the base 12 always attaches the vibration absorbing adhesive 52 a to the mounting flange 19.
Since the base 12 is fixedly supported via the spacer 52b or the spacer 51 and there is no portion where the base 12 and the mounting flange 19 are in direct contact with each other, the vibration of the base 12 is
It is possible to avoid being absorbed by the 2a, 52b and the spacer 51 and being propagated to the mounting flange 19.
According to the present embodiment, the base 12 and the mounting flange 19
Are separated from each other, the base 12 can be commonly used for various optical units only by changing the shape of the mounting flange 19, and the lead wire 61 and the connector 62 can be used.
It is possible to easily cope with a change in the position and other design changes.

In this embodiment, the base 12 is fixed to the mounting flange 19 with vibration absorbing adhesives 52a and 52b, and a mounting member such as a screw is used to mount the base 12 to the mounting flange 19. Therefore, it is possible to prevent the vibration of the base 12 from being transmitted to the mounting flange 19 via the mounting member. In this embodiment, the base 12 and the mounting flange 19
Since the vibration absorbing adhesives 52a and 52b or the spacers 51 at the opposite portion of the base 1 are arranged over the entire circumference, the base 1
Vibration is absorbed in the entire circumference of the mounting flange 1 and the mounting flange 1
9 can be better avoided.
Then, by preventing the vibration from being propagated from the base 12 to the mounting flange 19, the vibration of the casing is suppressed, and the vibration of another member such as a folding mirror or an fθ lens supported by the casing is avoided. it can. In addition, it is possible to prevent generation of loud noise due to vibration of the casing.

Further, since the space between the outer peripheral edge of the base 12 and the mounting flange 19 is sealed, noise generated in the base 12 and the printed circuit board 14 is removed from between the base 12 and the mounting flange 19. It is prevented from leaking out.

According to this embodiment, the printed circuit board 14 is fixedly supported on the base 12 without fail through the vibration absorbing adhesives 52c and 52d or the vibration absorbing silicone rubber sheet 53. 12, the vibration of the printed circuit board 14 is reduced by the vibration absorbing adhesives 52c and 52d and the silicone rubber sheet 53.
, And can be prevented from being transmitted to the base 12. In the present embodiment, the printed board 14 is fixed to the base 12 with the vibration absorbing adhesives 52c and 52d, and no fastening member such as a screw is used to attach the printed board 14 to the base 12. Therefore, the vibration of the printed circuit board 14 is transmitted to the base 1 via the fastening member.
2 can be avoided.

In this embodiment, the vibration-absorbing adhesives 52c and 52d at the opposing portions of the printed circuit board 14 and the base 12 are used.
Since the silicone rubber sheet 53 is disposed over the entire circumference, the vibration of the printed board 14 is caused by the vibration absorbing adhesives 52 c and 52 d over the entire circumference of the printed board 14.
And the silicone rubber sheet 53 to be absorbed and propagated to the base 12 can be better avoided. Further, since the space between the outer peripheral edge of the printed circuit board 14 and the base 12 is sealed, noise generated in the printed circuit board 14 is prevented from leaking outward from between the printed circuit board 14 and the base 12. Is done. Further, it is possible to prevent dust and the like from the amateur coil 13 and the like from scattering and adhering to the rotary polygon mirror 40 and the like.

According to the present embodiment, the vibration absorbing adhesive 52d is also disposed between the inner peripheral edge of the printed circuit board 14 and the base 12 over the entire circumference. It is possible to avoid being absorbed by the vibration absorbing adhesive 52d and being propagated from the inner peripheral edge to the base 12.
Further, noise generated on the printed circuit board 14 is prevented from leaking outward from between the printed circuit board 14 and the base 12,
Further, it is possible to prevent dust or the like from the amateur coil 13 or the like from scattering and adhering to the rotary polygon mirror 40 or the like. Also,
Both edges of the inner peripheral edge and the outer peripheral edge of the printed circuit board are the base 12.
, A strong adhesive force can be obtained.

According to the present embodiment, the fins 18 are formed on the top surface of the base 12 and the fins 18 are substantially rod-shaped, so that heat can be efficiently dissipated irrespective of the direction of attachment to the optical unit and the structure. Done. According to the present embodiment, the yoke 16 is fixed to the armature coil 13, and the silicone-based adhesive layer 17 is formed between the armature coil 13 and the base 12, so that the vibration of the armature coil 13 is applied to the base 12. The heat is hardly propagated, and the heat of the amateur coil 13 is radiated from the silicone-based adhesive layer 17 to the outside via the base 12 in a good condition.

The present invention is not limited to the above-described embodiment, and the shape, size, material, etc. of each member can be appropriately changed without departing from the spirit of the present invention. For example, in the above-described embodiment, the printed circuit board 14 is supported below the base 12 and the rotary polygon mirror 40 is supported below the printed circuit board 14, but the printed circuit board 14 is supported above the base 12, Further, the rotating polygon mirror 40 may be supported above.

In the above embodiment, the amateur coil 1
Although a coreless coil 3 is used, an amateur coil with a core can also be used. In the above embodiment, the rotor magnet 22 are used those cylindrical multipolar, it is also possible to use a plurality of a two-pole.

In the above embodiment, the rotating device is a rotary polygon mirror device. However, the rotating device of the present invention using the motor of the present invention is not limited to this, and may be a hard disk drive or a CD-ROM drive. The present invention can be suitably applied to a rotary device of various devices used in various direct drives such as, for example, and in an environment where noise is not preferred.

[0045]

As described above, according to the motor according to the present invention, it is possible to suppress vibration during rotation and reduce noise. Further, according to the rotating body device according to the present invention, by using the motor according to the present invention, vibration and noise can be reduced, and downsizing can be achieved.

[Brief description of the drawings]

FIG. 1 is an axial sectional view showing a rotary polygon mirror device as one embodiment of a rotating body device of the present invention.

FIG. 2 is a plan view of the rotary polygon mirror device of FIG. 1;

FIG. 3 is a sectional view of the rotary polygon mirror device of FIG. 1 taken along line BB.

FIG. 4 is an axial sectional view showing a conventional motor.

[Explanation of symbols]

 Reference Signs List 10 Stator 11 Fixed shaft bolt 12 Base 13 Amateur coil 14 Printed circuit board 16 Yoke 17 Silicone adhesive layer 19 Mounting flange 20 Rotor 21 Support member 22 Rotor magnet 30 Bearing 40 Rotating polygon mirror 51 Spacer 52a to 52e Vibration absorbing adhesive Agent 53 Silicone Rubber Sheet

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H02K 5/00-5/24 H02K 11/00 H02K 21/24

Claims (3)

(57) [Claims] 1. A mounting flan attached to a casing.
A base fixed to the mounting flange by an adhesive layer having a vibration absorbing property; a support member rotatably supported with respect to the base; and a support member arranged in an axial direction of the support member; wherein the printed circuit board attached to the base, an armature coil fixed to the substrate surface of the printed circuit board, that includes a rotor magnet which is supported by the support member so as to face in the axial direction as the armature coil And the motor. 2. The motor according to claim 1, wherein the base is separated from the mounting flange by the adhesive layer and a vibration absorbing absorbing member. 3. A rotating body device comprising the motor according to claim 1.