JP2009044847A - Motor and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a space for the installation of a motor and electronic equipment and makes it possible to also reduce the size of the motor body. <P>SOLUTION: The motor 1 is so constructed that the following is implemented: the motor body 3 including a rotor 2 and stators 4, 5 is formed substantially in the shape of a column extending along the rotating shaft of the rotor 2; and an axial end face 3a for anchoring to the fixing plate 40 of an object on which the motor is installed is formed on an axial end face of the motor body 3. The motor 1 is provided with installation bosses 6a protruded from the axial end face 3a in the direction of the axis of the motor body 3. The installation bosses are inserted into through holes 40c formed in the fixing plate 40 and are used for thermal caulking. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a motor and an electronic device. For example, the present invention relates to a motor suitable as a small motor for vibration and driving, and an electronic device using the motor, for example, an electronic device such as a mobile phone or a digital camera.

Conventionally, when a motor is fixed to a body to be mounted, a method is generally employed in which a mounting plate projecting in the radial direction is provided on the motor case, and the mounting plate and the body to be mounted are coupled by means such as screw fastening. Yes.
As such a motor, Patent Document 1 discloses that a stator is attached to an inner peripheral surface of a casing having a hollow cylindrical portion, a rotor is disposed inside the casing, and a rotor is provided by a bearing portion provided in the casing. In a small motor that rotatably supports the rotating shaft, a small motor is described in which a mounting plate for supporting the motor is fixed to the outer peripheral surface of the hollow cylindrical portion of the casing by laser beam welding. For this reason, the mounting plate is provided in the shape of a circular arc plate protruding outward in the radial direction of the casing.
In addition, as an example in which such a mounting plate or the like is attached to the mounted body without protruding radially outward, Patent Document 2 discloses an end portion on the output shaft side of the motor on the bottom surface of the mounted body. A boss is provided at a position corresponding to the hole provided in the motor, and the attached body is combined so that the boss is inserted into the hole on the output shaft side end of the motor. A small motor device is described in which the output shaft side end and the mounted body are fixed.
JP-A-10-146002 JP 2000-232750 A

However, the conventional motors and electronic devices as described above have the following problems.
In the technique described in Patent Document 1, since the mounting plate protrudes in an arc shape outward in the radial direction of the casing, the radial dimension of the motor including the mounting portion becomes large, and the electronic equipment and the like to which the motor is mounted are downsized. There is a problem that it cannot be thinned.
In the technique described in Patent Document 2, a hole is provided in the output side end portion of the motor, and the caulking is performed after inserting the boss of the attached body into the hole, so that without increasing the radial dimension of the motor, Although it can be attached to the mounted body, in order to heat caulk after inserting the boss from the mounted body into the hole in advance, the motor first attaches only the outer case to the mounted body, and then assembles the rotor, etc. There is a need. Therefore, there exists a problem that the assembly process of a motor and the attachment process of the motor with respect to a to-be-attached body cannot be isolate | separated. As a result, when a motor is supplied to a manufacturer of an electronic device, there is a problem that the motor cannot be supplied as a single assembly component with guaranteed performance during assembly.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a motor and an electronic apparatus that can reduce the space for mounting and can also reduce the size of the motor body. And

In order to solve the above-described problem, in the invention according to claim 1, the motor body including the rotor and the stator is formed in a substantially column shape extending along the rotation axis of the rotor, and is formed on the axial end surface of the motor body. A motor in which a locking surface for locking to a plate-like fixing portion of a mounted body is formed, and is inserted into a through-hole penetrating the plate-shaped fixing portion of the mounting body, In order to weld, it is set as the structure provided with the attachment boss | hub protruded in the axial direction of the said motor main body from the axial direction end surface in which the said locking surface was formed.
According to the present invention, the mounting boss protruding from the axial end surface on which the locking surface is formed is inserted into the through hole of the fixing portion of the mounted body, and the locking surface is engaged with the fixing portion of the mounting body. The motor main body can be fixed by engaging the mounting boss with the fixing surface and thermally caulking or welding the mounting boss to the fixed portion of the mounted body. Since the mounting boss projects in the axial direction from the axial end surface of the substantially columnar motor body, for example, the range of the cross section perpendicular to the axis of the motor body without using a mounting plate extending outward in the direction perpendicular to the axis Can be installed in.

According to a second aspect of the present invention, in the motor according to the first aspect, the mounting boss is located at a peripheral edge portion of an end surface in the axial direction of the motor body.
According to the present invention, since the mounting boss is provided on the peripheral edge portion of the axial end surface of the motor body, even if the mounting boss has a small cross-sectional area or caulking strength, it can resist the rotational torque around the motor body in the axial direction. It becomes easy to do.

According to a third aspect of the present invention, in the motor according to the first or second aspect, the mounting boss is formed on a coil holding member of the stator.
According to the present invention, since the mounting boss can be integrated with the coil holding member, the number of parts can be reduced.

According to a fourth aspect of the present invention, in the motor according to any one of the first to third aspects, the mounting boss is formed on a casing portion of the motor body.
According to the present invention, the mounting boss can be integrated with the casing portion, so that the number of parts can be reduced. Further, by extending the mounting boss in the axial direction from the casing portion in the direction perpendicular to the axis of the motor body, it is easy to position the mounting boss at the peripheral edge portion of the end surface in the axial direction.

According to a fifth aspect of the present invention, in the electronic device, the motor according to any one of the first to fourth aspects, a locked surface to which the locking surface of the motor is locked to attach the motor, A plate-like fixing portion having a through hole through which the mounting boss of the motor is inserted. The mounting boss is inserted into the through hole, and the locking surface of the motor is engaged with the locked surface. In a stopped state, the mounting boss is thermally caulked or welded to the plate-like fixing portion, whereby the motor is fixed to the fixing portion.
According to this invention, since the motor according to any one of claims 1 to 4 is provided, the same effect as the invention according to any one of claims 1 to 4 is provided.

  According to the motor and the electronic apparatus of the present invention, the motor is mounted on the mounted body by heat caulking or welding the mounting boss protruding from the axial end surface of the substantially columnar motor body. Therefore, it is possible to reduce the space for mounting and to reduce the size of the motor body.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In all the drawings, even if the embodiments are different, the same or corresponding members are denoted by the same reference numerals, and common description is omitted.

[First Embodiment]
A motor according to a first embodiment of the present invention will be described.
FIGS. 1A and 1B are a schematic front view and a right side view of the motor according to the first embodiment of the present invention. FIG. 2 is a schematic perspective view showing an attachment mode of the motor according to the first embodiment of the present invention. FIG. 3A is a side view of FIG. FIG. 3B is a side view as viewed from B in FIG. 4 is a cross-sectional view taken along the line CC of FIG. FIG. 5 is a schematic perspective view of a coil holding member used in the motor according to the first embodiment of the present invention. FIG. 6 is a schematic perspective view of another coil holding member used in the motor according to the first embodiment of the present invention.

In the motor 1 of the present embodiment, as shown in FIGS. 1A and 1B, a motor body 3 including a rotor 2 and stators 4 and 5 extends along a motor shaft 2 a that is a rotation axis of the rotor 2. It has a substantially columnar shape extending, and includes two mounting bosses 6a for mounting to the mounted body by thermal caulking or welding on one axial end surface of the motor body 3. The columnar structure of the motor body 3 may be, for example, a prismatic shape such as a quadrangular prism shape, but will be described below as an example of a cylindrical shape.
The type of the motor 1 may adopt any known configuration, but in this embodiment, as an example, a case of a two-phase PM type motor that performs two-phase excitation drive using a coil block. I will explain it.

The rotor 2 comprises a motor shaft 2a and a permanent magnet 2b (see FIG. 4), and bearings 8 (FIG. 1 (a), FIG. 1 (a), 4), the permanent magnet 2b is disposed between the bearings 8 so as to be rotatable. In the present embodiment, the motor shaft 2a protrudes on the axial end surface 3a side of the end plate 3A.
The permanent magnet 2b is fixed and integrated on the outer peripheral portion of the motor shaft 2a with, for example, an adhesive, and is magnetized so that a plurality of magnetic poles having different polarities are alternately arranged in the circumferential direction.
And the axial direction end surface 3a comprises the locking surface for positioning the motor main body 3 to the axial direction of the motor shaft 2a, and locking to a to-be-attached body. The locking surface may be provided at a position and size necessary for positioning the motor body 3 in the axial direction, and therefore does not have to be provided on the entire axial end surface 3a.
A cylindrical fitting portion 3c provided on the outer peripheral side coaxial with the motor shaft 2a protrudes from the central portion of the axial end surface 3a, thereby positioning the motor body 3 in the direction perpendicular to the axis. It can be done.

Next, the mounting mode and internal structure of the motor 1 will be described with reference to FIGS.
The fixed plate 40 is an example of a fixed portion of the mounted body of the motor 1 and includes a locked surface 40a on which the axial end surface 3a of the motor 1 is locked on at least one plate surface. Further, in the plate thickness direction, corresponding to the positional relationship between the fitting portion 3c and the two mounting bosses 6a, a positioning hole 40b for fitting the fitting portion 3c of the motor 1 and the two mounting bosses 6a, respectively. A mounting boss through hole 40c is provided. In the present embodiment, the fixing plate 40 is assumed to be made of a metal or an insulating material having heat resistance, and the mounting boss 6a will be described as an example in which the fixing plate 40 is caulked to the fixing plate 40.

The stator 4 constitutes an A-phase stator. As shown in FIG. 4, the stator 4 is provided with an inner yoke portion 4b including magnetic pole teeth facing the permanent magnet 2b on the inner peripheral side, and on the outer peripheral side of the inner yoke portion 4b. A coil block having a coil 7 wound around a coil bobbin 6 (coil holding member) is disposed, and a casing portion 4a that covers the outer peripheral side of the coil block is provided.
The stator 5 constitutes a B-phase stator.As shown in FIG. 4, the stator 5 includes an inner yoke portion 5b including magnetic pole teeth facing the permanent magnet 2b on the inner circumferential side, and on the outer circumferential side of the inner yoke portion 5b. A coil block in which a coil 10 is wound around a coil bobbin 9 is arranged, and a casing portion 5a that covers the outer peripheral side of the coil block is provided.
Here, the winding terminals of the coils 7 and 10 are respectively fixed to the two terminal processing units 6c and 9c that protrude to the side of the motor body 3, and current is supplied from the terminal processing units 6c and 9c. It is possible.
Further, the magnetic pole teeth of the stators 4 and 5 are arranged with a phase shifted in the circumferential direction in order to perform two-phase excitation drive.

As shown in FIG. 5, the coil bobbin 6 includes a cylindrical portion 6d having an inner diameter through which the permanent magnet 2b can be inserted, and flange portions 6e and 6f extending radially outward from the axial end of the cylindrical portion 6d. Prepare.
Two columnar mounting bosses 6a are extended along the axial direction on the outer side in the axial direction of the cylindrical portion 6d at the peripheral edge of the flange portion 6e. Further, a terminal processing portion 6c is provided on the radially outer side of the flange portion 6e.
In order to allow the mounting boss 6a to be caulked with heat in a short time, the diameter of the mounting boss 6a is preferably narrow.
In the present embodiment, the radial position of the mounting boss 6 a is a position close to the outer shape of the motor body 3. Thus, when the diameter of the mounting boss 6a is close to the cross-sectional diameter of the motor body 3, the moment that can be applied to each mounting boss 6a when the cross-sectional area of the mounting boss 6a is constant. Therefore, a large rotational torque can be resisted against the cross-sectional area and strength of the mounting boss 6a in the direction perpendicular to the axis.
Therefore, the diameter of the mounting boss 6a can be reduced, and the strength of the material can be reduced. Thereby, material cost can be reduced or the efficiency of heat caulking can be improved.

  Since the mounting boss 6a is made of a thermoplastic resin, it can be easily cut with an appropriate tool. Therefore, the length of the mounting boss 6a is, for example, a length that can correspond to the maximum value of the mounting thickness of the mounted body that can be considered, and if the mounting plate thickness of the actual mounted body is short, the extra tip You may make it assemble after cutting a part.

  As the material of the coil bobbin 6, an appropriate thermoplastic resin that can be caulked by heat can be adopted. In this embodiment, each part is integrally molded by injection molding using such a thermoplastic resin. Thereby, for example, the mounting boss 6a can be manufactured at a lower cost than when the mounting boss 6a is formed separately and then embedded in the flange portion 6e.

For this reason, after fixing a winding terminal to one terminal processing part 6c, winding is wound around the outer peripheral surface of the cylindrical part 6d between the flange parts 6e and 6f, and the coil 7 is formed. A coil block is formed by fixing the terminal to the other terminal processing unit 6c.
As shown in FIG. 4, the coil block formed by the coil bobbin 6 and the coil 7 is assembled in a groove formed between the inner yoke portion and the casing portion of the stator 4, and then the axial end surface 3a. Each mounting boss 6a is inserted into a hole 3d provided at the peripheral edge of the member forming the member, so that the motor body 3 is assembled.
In such an assembled state, the length of each mounting boss 6a is set so as to protrude from the axial end surface 3a by a predetermined length including the plate thickness of the coil 10 and the caulking allowance of heat caulking.

Further, as shown in FIG. 6, the coil bobbin 9 is obtained by removing the two mounting bosses 6a from the coil bobbin 6, and corresponds to the cylindrical part 6d, the flange parts 6e and 6f, and the terminal processing part 6c. A cylindrical portion 9d having a shape, flange portions 9e and 9f, and a terminal processing portion 9c are provided. The coil 10 is assembled to the coil bobbin 9 in the same manner as the coil 7.
A coil block formed by the coil bobbin 9 and the coil 10 is incorporated in a groove between the inner yoke portion 5b of the stator 5 and the casing portion 5a.
Such stators 4 and 5 constitute a cylindrical body joined at axial ends with the magnetic circuits separated. In this cylindrical body, the permanent magnet 2b of the rotor 2 is housed, and both ends of the cylindrical body are closed by end plates 3A and 3B that hold bearings 8 that rotatably support the motor shaft 2a. It is assembled.

In order to attach the motor 1 in the assembled state to the fixed plate 40, first, the motor shaft 2a is inserted into the positioning hole 40b from the locked surface 40a side of the fixed plate 40. Then, each mounting boss 6a is inserted through the mounting boss through hole 40c of the fixing plate 40 and moved in the axial direction, and the fitting portion 3c is fitted into the positioning hole 40b for positioning. Then, the axial end surface 3a is locked to the locked surface 40a.
In this state, the motor 1 is positioned at the axial position by the locked surface 40a, and the radial position is positioned at the axial center of the positioning hole 40b. And the front-end | tip part of the attachment boss | hub 6a is heat-crimped with respect to the fixing plate 40 by a suitable heat caulking means.

Thus, the motor 1 can be attached to the fixed plate 40 in the state of an assembly in which the motor body 3 including the rotor 2 and the stators 4 and 5 is rotatably assembled.
Depending on the application of the motor 1, components such as a gear and an eccentric weight may be assembled at the tip of the motor shaft 2a. In this case, when these have a size that can be inserted into the positioning hole 40 b, it is preferable to assemble them before attaching to the fixing plate 40.

  According to the motor 1 of the present embodiment, each mounting boss 6a protrudes in the axial direction from the axial end surface 3a of the substantially columnar motor body 3, so that, for example, the mounting plate is extended outward in the direction perpendicular to the axis. It is possible to attach the motor body 3 within a range perpendicular to the axis of the motor body 3 without using the above. As a result, the size of the motor 1 in the direction perpendicular to the axis can be reduced as compared with the case where a mounting plate or the like is provided on the side.

Next, a modification of this embodiment will be described.
FIG. 7 is a cross-sectional view taken along the line C-C of FIG. 2 showing a motor attachment mode according to a modification of the first embodiment of the present invention. FIG. 8 is a schematic perspective view of a casing portion used in a motor according to a modification of the first embodiment of the present invention.

  As shown in FIGS. 1 to 3 of the motor 1 of the first embodiment, the motor 20 of the present modification has substantially the same appearance as the motor 1, and instead of the stators 4 and 5, a stator 4A 5A. Below, it demonstrates centering on a different point from the said 1st Embodiment.

The stator 4A constitutes an A-phase stator, and a coil block 7A is housed in a stator case 21 as shown in FIG.
As shown in FIGS. 7 and 8, the stator case 21 includes an inner yoke portion 21b including magnetic pole teeth facing the permanent magnet 2b on the inner peripheral side, and radially outward from the axial end of the inner yoke portion 21b. A bottom surface portion 21d that locks the coil block 7A in the axial direction is formed. A cylindrical casing portion 21a that surrounds the inner yoke portion 21b on the outer peripheral side of the bottom surface portion 21d and that forms the side surface of the motor body 3 is formed. The formed cross section along the axial direction is a substantially double cylindrical member having a U-shaped cross section.
A cutout for pulling out the winding terminal of the coil block 7A to the outside is provided in a part of the side surface of the axial end opposite to the bottom portion 21d, and the coil block 7A is provided above the cutout. A terminal processing member 21c for fixing the winding terminal is projected outward in the radial direction.
In addition, two mounting bosses 6a are erected in the axial direction at the axial end of the casing portion 21a opposite to the bottom surface portion 21d.

In this modification, the inner yoke portion 21b has at least magnetic pole teeth made of a metal such as pure iron, and the casing portion 21a and the bottom surface portion 21d are made of an appropriate metal. That is, the casing portion 21a and the bottom surface portion 21d also serve as a yoke surrounding the coil block 7A.
The mounting boss 6a of this modification is insert-molded at the end of the casing portion 21a with the same thermoplastic resin as in the above embodiment. The shape of the mounting boss 6a at the protruding portion from the casing portion 21a is a bar-like shape similar to that of the above embodiment.

  The stator 5A uses a stator case 22 in which the mounting boss 6a is removed from the stator case 21 in place of the stator case 21 in the stator 4A, and only the point that a coil block 10A similar to the coil block 7A is attached to the stator case 22 is used. Different. That is, the stator case 22 includes a casing portion 22a, an inner yoke portion 22b, and a terminal processing portion 22c having the same configuration instead of the casing portion 21a, the inner yoke portion 21b, and the terminal processing member 21c of the stator case 21.

The stators 4A and 5B are joined in the axial direction with the bottom surface portions 21d and 22d facing each other, and constitute a cylindrical portion of the motor body 3.
For this reason, in the same manner as in the above embodiment, the rotor 2 is inserted into the cylindrical portion composed of the stators 4A, 5A, and fixed with the end plates 3A, 3B provided with the bearings 8 covered with both ends. The motor 20 can be assembled.
As shown in FIGS. 1 to 3, the motor 20 is configured so that two mounting bosses 6 a protrude in the axial direction from the axial end surface 3 a, as in the above embodiment. In exactly the same manner, the mounting boss 6a can be attached to the fixing plate 40 by heat caulking.

  According to this modification, the mounting boss 6a is extended in the axial direction from the axial end of the casing portion 21a constituting the side surface of the motor body 3, so that the position of the mounting boss 6a is the outermost end of the axial end surface 3a. Located at the periphery. For this reason, since it is not necessary to provide a flange part etc. in order to form the attachment boss | hub 6a, the shape of the stator case 21 and the shape of a shaping die can be simplified.

[Second Embodiment]
Next, an electronic apparatus according to a second embodiment of the present invention will be described.
FIG. 9 is a cross-sectional view showing a schematic configuration of an electronic apparatus according to the second embodiment of the present invention.

  As shown in FIG. 9, the camera-equipped cellular phone 100 (electronic device) of the present embodiment includes the motor 1 of the first embodiment and a lens body 101 movably disposed along the optical axis L <b> 1. And a camera module 104 having a lens driving means 102 for moving the lens body 101 along the optical axis L1 in accordance with the rotation of the rotor 2 of the motor 1 and an image sensor 103 arranged on the optical axis L1. ing.

The motor 1 is fixed to the fixing plate 40 provided on the motor support member 111 fixed to the first support plate 110 by caulking the mounting boss 6a. The upper surface of the first support plate 110 is covered with a cover 112, and the first support plate 110 and the cover 112 constitute a casing 113 of the camera module 104.
A circuit board 114 on which a control unit, a motor driver and a signal processing unit (not shown), and the image sensor 103 are mounted is attached to the back surface of the first support plate 110. Among these, the installation position of the image sensor 103 is adjusted so as to be accommodated in the opening 110 a formed in the first support plate 110. The image sensor 103 is a semiconductor device such as a CCD or CMOS.

The control unit includes a CPU, a memory, and the like, and controls the operation of the image sensor 103 and controls the camera module 104 in general. The motor driver supplies current to the winding terminals of the coils 7 and 10 of the motor 1.
The signal processing unit processes the signal output from the image sensor 103 and outputs the processed signal to the control unit.

  A lens body 101 is disposed above the image sensor 103. The lens body 101 includes a cylindrical lens holder portion 115 and a plurality of lenses R fixed to the inner peripheral surface of the lens holder portion 115. As described above, the installation position of the image sensor 103 is adjusted so as to be disposed on the optical axis L1 of the lens R. Further, the cover 112 is formed with a daylighting hole 112a at a position located on the optical axis L1 of the lens R.

The lens holder portion 115 is moved to the moving holders 116 and 117 that are linearly movable in the direction along the optical axis L1 (the vertical direction in the figure) by the feed screw shaft 120 that is rotationally driven by the output gear 126a of the lens driving means 102. Is retained.
A driving gear 122 that meshes with the input gear 123 a of the lens driving means 102 is provided at the tip of the motor shaft 2 a of the motor 1.
The moving holders 116 and 117 constitute a moving mechanism that realizes the position of the lens body 101 and the zoom operation by the rotation of the feed screw shaft 120.

  With such a configuration, by operating the motor 1, the rotation of the motor shaft 2 a is appropriately decelerated by the gear transmission unit 130 and transmitted to the feed screw shaft 120, and the moving holder 116 is linearly moved. For this reason, the lens body 101 can be moved on the optical axis L1, and a focus operation and a zoom operation can be performed.

In the above description, the example in which the motor mounting boss is provided on the axial end surface on the side from which the motor shaft is projected has been described. However, if the stator configuration is changed, the motor shaft is not projected. It can also be provided on the axial end face.
In this case, when a gear or an eccentric weight attached to the motor shaft 2a has a large size that is close to or exceeds the outer diameter of the motor body, for example, it cannot be inserted into the positioning hole 40b of the fixed plate 40. However, since they can be attached in a state where they are pre-assembled to the motor shaft, the assembly can be performed efficiently.

  In the above description, the example in which the mounting boss is provided on the peripheral edge portion in the radial direction of the motor body has been described. However, when the mounting boss can appropriately select the radial installation position of the flange portion, etc. You may provide in the part inside the direction. In this case, in consideration of the expansion of the heat caulking portion, the mounting boss can be installed on the inner side in the radial direction so that the mounting can be performed within the range of the axis perpendicular to the motor body including the heat caulking portion. For this reason, when components are densely arranged in the radial direction of the motor, the assembly space can be saved.

  Further, in the modified example of the first embodiment, the case where the mounting boss 6a is provided in the casing portion 21a of the metal stator case 21 that also serves as the outer yoke has been described. When a plastic resin case is provided, the mounting boss 6a may be integrally formed at the end of the outer case as a configuration without the mounting boss 6a as in the stator case 22. Further, the terminal processing member 21c can be integrally formed in the outer case. In this case, since the stator case 22 covered with the case has only a function as a yoke, the stator case 22 can be formed of a material that does not have an appearance necessary for the case.

In the above description, the mounting boss has been described as an example of a columnar shape, but the shape of the mounting boss is not limited to this as long as the mounting boss can be caulked. For example, an appropriate protrusion shape such as a cylindrical shape, a prismatic shape, a protruding piece shape, a conical shape, or a hemispherical shape can be employed.
In addition, when welding the mounting boss, a shape suitable for welding is adopted.

  In the above description, the number of mounting bosses is two. However, the number is not limited to this, and one or more mounting bosses can be provided as necessary.

  In the description of the second embodiment, the camera-equipped mobile phone has been described as an example of the electronic device. However, the present invention is not limited to this case. For example, a digital camera or the like may be used.

  Further, the constituent elements described in the above embodiments and modifications can be implemented in appropriate combination within the scope of the technical idea of the present invention, if technically possible. For example, in the mobile phone with camera 100 of the second embodiment, the motor 20 may be used instead of the motor 1.

It is the typical front view and right view of the motor which concern on the 1st Embodiment of this invention. It is a typical perspective view showing the mode of attachment of the motor concerning a 1st embodiment of the present invention. It is the A view side view and B view side view of FIG. It is CC sectional drawing of FIG. It is a typical perspective view of the coil holding member used for the motor concerning a 1st embodiment of the present invention. It is a typical perspective view of the other coil holding member used for the motor concerning a 1st embodiment of the present invention. It is CC sectional drawing of FIG. 2 which shows the attachment aspect of the motor which concerns on the modification of the 1st Embodiment of this invention. It is a typical perspective view of a casing part used for a motor concerning a modification of a 1st embodiment of the present invention. It is sectional drawing which shows schematic structure of the electronic device which concerns on the 2nd Embodiment of this invention.

Explanation of symbols

1, 20 Motor 2 Rotor 2a Motor shaft 3 Motor body 3A, 3B End plate 3a Axial end face (locking face)
4, 4A, 5, 5A Stator 6 Coil bobbin (coil holding member)
6a Mounting boss 6b Heat caulking part 7, 10 Coil 7A, 10A Coil block 9 Coil bobbin 21, 22 Stator case 21a Casing part 40 Fixing plate (fixing part)
40a Locked surface 40b Positioning hole 40c Mounting boss through-hole 100 Mobile phone with camera (electronic device)

Claims (5)

A motor main body including a rotor and a stator has a substantially columnar shape extending along the rotation axis of the rotor, and a locking surface for locking to a plate-like fixing portion of the mounted body on an axial end surface of the motor main body Is a formed motor,
Mounting that protrudes in the axial direction of the motor body from the axial end surface on which the locking surface is formed in order to be inserted into a through-hole penetrating the plate-like fixing portion of the mounted body and thermally crimped or welded A motor comprising a boss.   The motor according to claim 1, wherein the mounting boss is located at a peripheral edge portion of an end surface in the axial direction of the motor body.   The motor according to claim 1, wherein the mounting boss is formed on a coil holding member of the stator.   The motor according to claim 1, wherein the mounting boss is formed in a casing portion of the motor body. A motor according to any one of claims 1 to 4,
In order to attach the motor, it includes a locked surface to which the locking surface of the motor is locked, and a plate-like fixing portion having a through hole through which the mounting boss of the motor is inserted,
The mounting boss is inserted into the through hole, and the mounting boss is thermally caulked or welded to the plate-like fixing portion in a state where the locking surface of the motor is locked to the locked surface. Accordingly, the electronic device is characterized in that the motor is fixed to the fixing portion.

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