JPH1075545A - Mounting structure of miniature motor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately mount a miniature motor which can hardly be fastened with screws. SOLUTION: The external circumferential surface 130b of a motor 130 is fixed with a double sided adhesive tape 138 to the inside circumferential surface 145b of the motor mounting wall 144 of a motor holder 140 formed by combining a base part 142 with the motor mounting wall 144 in roughly 'L' shape. Then, the base part 142 of the motor holder 140 is screwed to the mounting surface 60a of a device body 60. This structure make possible the angle formed by the bottom surface 142a of the base part 142 and the inside circumferential surface 145b of the motor mounting wall 144 to become a right angle precisely so that the motor 130 is mounted accurately to the mounting surface 60a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a small motor mounting structure.

[0002]

2. Description of the Related Art In recent years, smaller motors have been developed and used for thin devices such as mobile phones and pagers. Such a small motor has an outer diameter of, for example, 6 mm.
Since it is as small as mm, it is difficult to provide a fixing screw hole on the end face on the output shaft side like a general motor and fix it by screwing. Therefore, in such a small motor,
A winding plate, which is a mounting member, is wound around the cylindrical outer peripheral surface, and the winding plate is fixed to the apparatus main body to be mounted. With such a mounting method, it is difficult to improve the accuracy of the mounting position and inclination of the motor, but the small motor of this example is used to generate vibration by rotating a weight eccentrically fixed to the output shaft. Mounting accuracy is not a major issue.

However, when a small motor is to be used as a drive source of a precision device such as a lens barrel, the conventional mounting method requires the mounting accuracy of the motor with respect to the drive transmission system, specifically, positioning. There is a problem that accuracy and inclination accuracy are not obtained. For this reason, it was not possible to use a small motor that is difficult to screw.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a small motor mounting structure which can accurately mount a small motor which is difficult to screw.

[0005]

In order to solve the above technical problems, the present invention provides a mounting structure for a small motor having the following configuration.

[0006] The motor mounting structure is a mounting structure for mounting the motor to the apparatus body. The motor mounting structure includes a motor mounting surface shaped along the outer peripheral surface of the motor, and a mounting reference surface extending in a direction perpendicular to the axial direction of the motor when the outer peripheral surface of the motor is aligned with the motor mounting surface. And a mounting member having: The outer peripheral surface of the motor is adhesively bonded to the motor mounting surface of the mounting member, and the mounting reference surface of the mounting member is pressure-fixed to the mounting surface of the apparatus body.

In the above configuration, the outer peripheral surface of the motor, generally a cylindrical surface or an oval cross-sectional outer surface, is bonded and fixed to the motor mounting surface of the mounting member by using an adhesive, an adhesive, a double-sided tape, or the like. . The mounting member to which the motor is adhered and fixed is attached to the mounting surface of the device body by screwing or press-fitting the mounting reference surface of the mounting member to the mounting surface of the device body, or by bonding using an adhesive or the like. It is fixed by crimping to the body. When the motor is bonded and fixed to the motor mounting surface of the mounting member, the mounting reference surface of the mounting member is orthogonal to the motor axial direction. The direction is perpendicular to the mounting surface of the apparatus main body. That is, the inclination of the motor is determined by the angle between the motor mounting surface of the mounting member and the mounting reference surface. It is easy to configure the mounting member so that the angle between the two surfaces is a right angle with high accuracy.

Therefore, a small motor, which is difficult to screw, can be mounted with a high degree of accuracy with respect to the inclination of the mounting surface of the apparatus body.

Preferably, the mounting member further has a motor contact surface for restricting the axial position of the motor by contacting the end surface of the motor when the outer peripheral surface of the motor is adhesively bonded to the motor mounting surface.

In the above configuration, the outer peripheral surface of the motor is bonded and fixed to the motor mounting surface of the mounting member in a state where the front end surface or the rear end surface is in contact with the motor abutting surface of the mounting member. As a result, the motor has high positional accuracy in the axial direction with respect to the mounting reference surface of the mounting member. Therefore, when the mounting reference surface of the mounting member is crimped and fixed to the mounting surface of the device main body, the motor is mounted on the mounting surface of the device body. Can be mounted with high accuracy in the axial direction.

Therefore, the small motor can be mounted with high accuracy in the direction perpendicular to the mounting surface of the apparatus body, that is, in the axial direction.

Preferably, the apparatus body has a motor positioning hole into which an outer peripheral surface of a bearing portion of the motor fits when the mounting member to which the motor is adhesively bonded is crimped and fixed to the apparatus body, and A rotation stop surface extending substantially radially with respect to the center. The mounting member further has a rotation-stopping engagement surface that comes into contact with the rotation-stopping surface of the device main body when it is crimped and fixed to the device main body.

In the above configuration, after the motor is bonded and fixed to the mounting member, the bearing of the motor is fitted into the motor positioning hole of the apparatus main body, and the mounting member is fixed to the apparatus main body by pressure bonding. The position of the motor within the mounting surface of the apparatus main body, that is, the position in the direction perpendicular to the axis is accurately determined by the motor positioning hole. Thus, for example, when a gear or the like is provided on the output shaft of the motor to transmit the driving force, the shaft interval, that is, a support shaft such as a gear meshing with the gear or the like provided on the output shaft of the motor and the output shaft of the motor are provided. It is easy to guarantee the accuracy of the distance between and. Further, the mounting member is prevented from rotating by the rotation-stopping engagement surface abutting against the rotation mounting surface of the apparatus main body, and does not rotate when, for example, the mounting member is screwed, so that the mounting member does not rotate in the rotation direction of the motor. Positioning becomes easy.

Therefore, the small motor can be mounted with high precision in positioning within the mounting surface of the apparatus main body, that is, in positioning in the direction perpendicular to the axis.

In each of the above-described configurations, the small motor is mounted at right angles to the mounting surface of the apparatus main body. However, the present invention includes a small motor mounting structure for mounting the motor parallel to the mounting surface of the apparatus main body.

The mounting structure of the small motor is a mounting structure for mounting the motor to the apparatus main body. The mounting structure of the small motor includes a motor mounting surface shaped along the outer peripheral surface of the motor, and a mounting reference surface extending parallel to the axial direction of the motor when the outer peripheral surface of the motor is aligned with the motor mounting surface. And a mounting member having: The outer peripheral surface of the motor is adhesively bonded to the motor mounting surface of the mounting member, and the mounting reference surface of the mounting member is pressure-fixed to the mounting surface of the apparatus body.

In the above construction, the outer peripheral surface of the motor, generally a cylindrical surface or an oval cross-sectional outer surface, is bonded and fixed to the motor mounting surface of the mounting member using an adhesive, a pressure-sensitive adhesive, a double-sided tape or the like. . The mounting member to which the motor is adhered and fixed is attached to the mounting surface of the device body by screwing or press-fitting the mounting reference surface of the mounting member to the mounting surface of the device body, or by bonding using an adhesive or the like. It is fixed by crimping to the body. When the motor is bonded and fixed to the motor mounting surface of the mounting member, the mounting reference surface of the mounting member is parallel to the axial direction of the motor, and the output shaft of the motor is parallel to the mounting surface of the apparatus body. In this way, it is easy to accurately configure the angle between the motor mounting surface of the mounting member and the mounting reference surface so that the motor can be mounted accurately and parallel to the mounting surface of the apparatus main body.

Therefore, a small motor, which is difficult to screw, can be accurately mounted parallel to the mounting surface of the apparatus body.

Preferably, the apparatus main body has an upright wall orthogonal to the mounting surface. The upright wall has a motor positioning hole into which the outer peripheral surface of a bearing portion of the motor fits when the mounting member to which the motor is adhesively bonded is press-fixed to the mounting surface of the apparatus body.

In the above configuration, after the motor is adhered and fixed to the mounting member, the bearing of the motor is fitted into the motor positioning hole of the upright wall of the apparatus main body, and the mounting member is fixed to the apparatus main body by crimping. By fitting with the motor positioning hole,
The position of the motor in the direction perpendicular to the axis is accurately determined.

Therefore, the small motor can be mounted with high accuracy in positioning in the direction perpendicular to the axis.

Preferably, when the outer peripheral surface of the motor is adhesively bonded to the motor mounting surface of the mounting member, the axis of the motor output shaft and the mounting reference surface of the mounting member are included in the same plane. It is. The center of the motor positioning hole of the upright wall of the apparatus main body and the mounting surface of the apparatus main body are included in the same plane.

In the above configuration, the joint surface between the mounting member and the apparatus main body is flush with the axis of the output shaft of the motor. Therefore, the moment acting on the joint surface between the mounting member and the apparatus main body by the force acting on the output shaft of the motor can be minimized. In other words, when the force acting on the output shaft of the motor is divided into a component in the joint surface direction and a component in the direction perpendicular to the joint surface, the component force in the joint surface acts in the same plane as the joint surface. Is because no moment acts on the joint surface.

Therefore, the small motor can be mounted more stably.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The lens barrel according to each embodiment of the present invention shown in FIGS. 1 to 21 will be described in detail below.

First, a lens barrel 10 according to a first embodiment of the present invention will be described with reference to FIGS.

As shown in the cross-sectional views of FIGS. 1 to 4, the lens barrel 10 generally has a fixed portion 20 in which first and second moving portions 30, 50 are nested. A collapsible zoom lens barrel adapted to protrude from the camera body, and comprises a main photographing optical system 12 comprising three components.
And an anti-shake optical system 14 for correcting camera shake.

That is, the lens barrel 10 basically includes the fixed section 20, the first moving section 30, and the second moving section 5
0, focus block 70, and third lens holder 8
0, from the collapsed state in FIG. 1 to the tele end state in FIGS. 3 and 4 from the collapsed state in FIG. 2 to the telephoto end state in FIGS. ing.

The fixing section 20 has a fixing cylinder 22 fixed in the body of the camera. A spiral lead 24 and three straight guide grooves 26 extending in the axial direction are formed on the inner peripheral surface of the fixed cylinder 22.

The first moving part 30 is a fixed cylinder 2 of the fixed part 20.
2 so that it can appear and disappear. The first moving part 30 includes a cam ring 32 and a rectilinear cylinder 40, which are a pair of plastic cylinders that are relatively non-movable and relatively rotatable in the axial direction.
Having. The rectilinear barrel 40 is arranged inside the cam ring 32. The outer peripheral surface of the cam ring 32 is covered by a first thin cylinder 39 which is a thin metal cylinder.

The cam ring 32 is provided with a lead engaging portion 34 which engages with the lead 24 of the fixed cylinder 22 at an end on the camera body side of the outer peripheral surface. When the cam ring 32 is rotated by a driving device (not shown), the fixed cylinder 22 of the fixed portion 20 is rotated.
Move in the axial direction along the lead 24. As shown in the development of FIG.
The first and second positions are divided into three equal parts in the circumferential direction as shown by 8.
And three third cams 36, 37, 38 are formed. The first cam 36 and the second cam 37 are arranged side by side in the optical axis direction indicated by the arrow 96, and the first cam 36 is located forward of the second cam 37, that is, on the subject side, and has a larger pressure angle. . The third cam 38 is disposed at an intermediate position between the pair of the first and second cams 36 and 37, that is, at a position shifted in the circumferential direction.
6 and larger than the pressure angle of the second cam 37. As will be described later, each of the cams 36, 37, and 38 has a forward barrel 52 of a second moving unit 50 that supports the first, second, and third lens groups 12a, 12b, and 12c of the main imaging optical system 12, and a focus. The cam followers 58, 76, 84 of the block 70 and the third lens holder 80 are engaged with each other, and the rotation of the cam ring 32 drives the lens barrel 10 to zoom.

Incidentally, the conventional cam ring 2 has first, second and third cams 6, 7, 8 as shown in the developed view of FIG.
Are arranged in the optical axis direction indicated by the arrow 96.
On the other hand, the cam ring 32 of the present embodiment has the same diameter as the conventional cam ring 2, but has basically the same shape as the cams 6, 7, 8 of the conventional cam ring 2, that is, the same pressure angle and the same length. Cam 3
By changing the arrangement of 6, 37, 38, the axial length is made shorter than that of the conventional cam ring 2. That is, FIG.
As shown in FIG. 2, when the rear end 32s of the cam ring 32 of the present embodiment on the camera body side and the rear end 2s of the conventional cam ring 2 are aligned, the front end 3 of the cam ring 32 of the present embodiment on the subject side is shown.
2t is retracted from the tip 2t of the conventional cam ring 2 on the subject side, and the axial length of the cam ring 32 of the present embodiment is reduced by X.

By the way, in order to make the length in the axial direction shorter than that of the conventional cam ring 2 with the same diameter, the first or second cams 6, 7 are displaced in the circumferential direction instead of the third cams 8. It is also possible. However, when the first cam 6 is displaced in the circumferential direction with respect to the second and third cams 7, 8, as shown in a developed view of FIG.
s approaches the first cam 6, the width between the two cams 6, 7 becomes too narrow, and the strength of the cam ring 2y becomes insufficient. Also, the second cam 7
In the cam ring 2x, which is arranged so as to be shifted in the circumferential direction with respect to the first and third cams 6 and 8, as shown in the developed view of FIG.
The tip 7 s of the second cam 7 interferes with the first cam 6. Further, when the first, second and third cams 6, 7, 8 are all displaced from each other in the circumferential direction, each cam 6, 7, 8
Will further interfere with each other. By changing the inclination of the cams so that the cams do not interfere with each other, the interference and approach between the cams can be eliminated.However, since the pressure angle increases, a large driving force is required, and the lens barrel can be smoothly moved. It becomes difficult to drive the zoom. Therefore, in order to shorten in the axial direction with the same diameter as the conventional cam ring 2, each cam 36,
The configuration in which 37 and 38 are arranged is optimal.

The rectilinear barrel 40 is arranged close to the inner peripheral surface of the cam ring 32. As shown in an exploded perspective view of the main part of FIG. 5, the rectilinear barrel 40 has three guide arms 46 extending from the cylindrical portion 44 on the camera body side toward the subject in the axial direction. On the outer peripheral surface of the cylindrical portion 44, a rectilinear engagement portion 42 slidably in contact with the rectilinear guide groove 26 of the fixed cylinder 22 is provided so as to protrude therefrom.
Are guided straight in the axial direction without rotating.

The outer peripheral surface of the first thin-walled cylinder 39 is exposed when the first moving section 30 is extended from the fixed section 20.

Inside the first moving section 30, a second moving section 50, a focus block 70 and a third lens holder 80 are housed in order from the object side to the camera body side.

The second moving part 50 is disposed so as to be able to protrude and retract with respect to the first moving part 30, and is a plastic cylinder and a second thin-walled metal cylinder which covers the outer circumferential surface of the cylinder 52. A tube 59;

The forward barrel 52 is, as shown in FIGS.
It is substantially cylindrical, and a part of the peripheral wall 54 is curved radially inward to form a guide groove 56 extending in the axial direction. The guide groove 56 is provided with the straight moving cylinder 4 of the first moving portion 30.
The zero guide arm 46 enters, and is guided linearly in the axial direction without rotating relative to the rectilinear barrel 40. The guide arm 46 of the rectilinear barrel 40 is sandwiched between a peripheral wall 54 that forms the guide groove 56 of the forward barrel 52 and a second thin-walled cylinder 59 that covers the outer peripheral surface of the forward barrel 52, and its circumference is covered. And movement in the circumferential direction is restricted. Therefore, even if the guide arm 46 receives a force in the circumferential direction, the guide arm 46 does not come off the guide groove 56 because its periphery is surrounded. Therefore, the radial dimension of the guide arm 46 can be reduced to make it thinner.

As shown in FIGS. 1 and 4, a cam follower 58 protruding radially outward and engaging with the first cam 36 of the cam ring 32 is provided on the outer peripheral surface of the forward barrel 52 on the camera body side.
Is provided. Since the relative rotation of the forward barrel 52 is prevented by the guide arm 46 of the straight barrel 40, when the cam ring 32 is rotated, the cam follower 58 is moved in the axial direction by the first cam 36 of the cam ring 32. That is, the second
The moving unit 50 is extended from the cam ring 32, that is, the first moving unit 30.

An intermediate wall 60 extending in the circumferential direction is provided inside the forward barrel 52 on the subject side.
2a. A front wall 66 is provided at the subject side end of the forward barrel 52. Between the front wall 66 and the intermediate wall 60, the first and second lenses 14a and 14b of the anti-vibration optical system 14 are rotatable by the first and second lens frames 110a and 110b, which will be described in detail later. Supported.

The outer peripheral surface of the second thin cylinder 59 is
When “0” is fed out from the first moving unit 30, it is exposed to the outside similarly to the first thin cylinder 39.

The focus block 70 supports the second lens group 12b of the main photographing optical system 12 inside the substantially cylindrical body 72 on the subject side. The second lens group 12b includes the focus unit 1 fixed to the main body 72.
6 (see FIG. 1) moves in the axial direction to adjust the focus. The second inside of the main body 72
A shutter unit 18 is housed closer to the camera body than the lens group 12b. The main body 72 has three rectilinear guide grooves 74 that penetrate the peripheral wall of the main body 72 and extend in the axial direction on the camera body side with respect to the shutter unit 18.

On the camera body side of the main body 72, a flange portion 73 is provided. Although not shown in FIG. 5, three cam followers 76 project from the flange portion 73 radially outward as shown in FIG. 1.
The cam follower 76 engages with the second cam 37 of the cam ring 32. Further, as shown in FIG. 5, a straight guide groove 75 penetrating in the axial direction is formed in the flange portion 73.
The straight running cylinder 40 is guided straight by engagement with the guide arm 46. Therefore, when the cam ring 32 rotates relative to the rectilinear barrel 40, the cam follower 76 is moved by the second cam 37 of the cam ring 32, and the focus block 70 is fed by the cam.

The third lens holder 80 is disposed closer to the camera body than the focus block 70 is. The third lens holder 80 has a substantially cylindrical main body 82 that supports the third lens group 12c, and three cam followers 84 that protrude radially outward from the outer peripheral surface of the main body 82. Each cam follower 84 penetrates while slidingly contacting the straight guide groove 74 of the focus block 70 and is engaged with the third cam 38 of the cam ring 32. The cam ring 32 is a straight cylinder 40
, The cam follower 84 is moved by the third cam 38 of the cam ring 32 while being guided straight by the straight guide groove 74 of the focus block 70,
The third lens holder 80 is fed by a cam. A straight guide groove for guiding the cam follower 84 of the third lens holder 80 in a straight line is formed in the focus block 7.
Instead of being provided at 0, it may be provided at the forward barrel 52. Also,
A straight guide groove for guiding the cam follower 84 of the third lens holder 80 in a straight direction may be provided, and a straight guide groove may be provided for both the forward barrel 52 and the focus block 70.
In this case, the relative rotation of the third lens holder 80 in one direction is regulated by the rectilinear guide groove of the forward barrel 52, and the relative rotation of the third lens holder 80 in the other direction is regulated by the rectilinear guide groove of the focus block 70. The third lens holder 80 can be configured to be guided in a straight line by both the straight guide grooves.

As described above, this lens barrel 10
When the cam ring 32 is rotated by a driving device (not shown), the first and second moving portions 30 and 50 are extended, and the three components of the main photographing optical system 12 housed inside the lens barrel 10. The lens groups 12a, 12b, and 12c are cam-fed in the axial direction and are driven to zoom. That is, when the cam ring 32 is rotated, the lens barrel 10 is extended from the retracted state (see FIG. 1), and enters the wide end state (see FIG. 2). That is, the cam followers 58, 76, and 84 of the advance barrel 52, the focus block 70, and the third lens holder 80 of the second moving unit 50 are at the wide end positions 36a, 37a, and 38a indicated by the dashed line in FIG. When the cam ring 32 is further rotated from the wide end state, each of the cam followers 58, 76, 84
Tele end position 3 indicated by a dashed line along 6, 37, 38
The lens barrel 10 moves to 6b, 37b, and 38b, and enters the telephoto end state (see FIGS. 3 and 4).

Next, the anti-vibration optical system 1 of the lens barrel 10
4 will be described with reference to FIGS. 9 to 15.

As described above, the anti-vibration optical system 14 includes the first and second lenses 14a and 14b, and is located at the object side end of the advance barrel 52 of the second moving unit 50, that is, the main photographing optical system 12 Is located closer to the subject side.

The first and second lenses 14a and 14b are afocal lenses, and cancel each other's power so that the anti-vibration optical system 14 as a whole has no power. The first and second lenses 14a and 14b of the image stabilizing optical system 14 are substantially orthogonal to each other in a direction perpendicular to the optical axis without moving in the optical axis direction in order to correct a shift of an imaging position due to camera shake. It is designed to be rotated in the direction. That is, when a camera shake, that is, vibration is detected by a detection unit (not shown) such as a gyro sensor, a shift of an image forming position due to the camera shake, that is, a position change is predicted, and the position change is canceled out, that is, there is a camera shake. The first and / or second lenses 14a, 14b so that
, The fluctuation of the imaging position during exposure is kept within a certain range that can be accepted as a photograph without causing a focus shift, and the influence of camera shake can be reduced. .

Since the anti-vibration optical system 14 is an afocal lens arranged closer to the subject than the main photographing optical system 12,
The first and / or second lenses 14a and 14b are different from the case where a part of the lens of the main photographing optical system 12 is moved or the case where an afocal anti-vibration optical system is arranged at an intermediate position of the main photographing optical system 12. The effect of movement on the optical performance is small,
Lens design is easy. In addition, since the amount of movement of the first and second lenses 14a and 14b, that is, the amount of control, does not become too small, position control of the first and second lenses 14a and 14b is also easy.

Hereinafter, a specific configuration of the image stabilizing optical system 14 will be described.

First and second lenses 1 of anti-vibration optical system 14
4a and 14b show FIG. 1 when viewed from the subject side in the optical axis direction.
As shown in the front view of the assembly 0 (showing the front wall 66 of the forward barrel 52 in perspective) and the front views of the main parts of FIGS.
It is supported by the first and second lens frames 110a, 110b, respectively. As shown in the main part sectional views of FIGS. 10 and 13, the first lens frame 110a is disposed closer to the subject than the second lens frame 110b. First and second lens frames 110a,
110b is arranged between the front wall 66 and the intermediate wall 60 of the advance barrel 52 extending in the direction perpendicular to the optical axis, and is rotatably supported by support shafts 120a and 120b arranged in parallel with the optical axis.

First and second lens frames 110a, 110b
As shown in FIGS. 11 and 12, the first and second lenses 14a and 14b surrounding the first and second lenses 14a and 14b are provided at positions substantially opposed to the first and second lenses 14a and 14b, that is, the optical axes. Shaft supports 114a, 114b
And input units 116a and 116b.

The frame main bodies 112a and 112b are configured to have a certain width or more along the outer shapes of the first and second lenses 14a and 14b. First and second lenses 14a,
14b is originally circular, but as shown in FIGS. 10 to 12, the first lens 14a has an upper portion and the second lens 14b has an upper portion, as shown in FIGS. And the lower part are each cut in a substantially D-shape, and the string 1
It has a shape having 4s, 14t, and 14u. Correspondingly, the first and second lens frames 110a and 110b also have a substantially D-shaped outer shape, and the cross section perpendicular to the optical axis has chords 112s and 112t in a part of the substantially circular outer shape. It has become. A slit (not shown) penetrating in the optical axis direction is formed at an appropriate position of the frame main bodies 112a and 112b, and a light emitting element, that is, an LED 102 is fixed to the subject side facing the slit. On the other hand, lens barrel 1
The position detection element 104 that receives the slit transmitted light from the LED 102 is fixed to the position of the forward cylinder 52 that is zero, opposite to the slits of the frame bodies 112a and 112b.

First and second lens frames 110a, 110b
As shown in FIG. 13, the shaft support portions 114a, 114b
The first and second support shafts 120 are provided in shaft holes 115a and 115b of
a and 120b are respectively inserted and rotatably supported. As shown in FIGS. 10 and 11, when viewed from the subject side in the optical axis direction, the first lens frame 110a is fixed to the first support shaft 12a because the first support shaft 120a is fixed to the right side of the optical axis.
It swings in an arc shape about 0a in a direction substantially perpendicular to the body of the camera, that is, in a vertical direction. Further, as shown in FIGS. 10 and 12, the second support shaft 120b is fixed above the optical axis, so that the second lens frame 110b
Is configured to swing in an arc shape in a substantially horizontal direction, that is, a left-right direction with respect to the camera body about the second support shaft 120b.

First and second lens frames 110a, 110b
Although it is possible to configure the combination of the swing directions that are substantially orthogonal to each other in the opposite manner, as can be seen from the schematic diagram of the lens frame in FIG. The lens frame 110b can be minimized.

FIG. 9A is a schematic view of the first lens frame 92a on the object side swinging in the left-right direction and the second lens frame 94a on the camera body swinging up and down as viewed from the optical axis direction. FIG. 9B is a schematic diagram viewed from the optical axis direction when the first lens frame 92b swings up and down and the second lens frame 94b swings left and right. Here, FIGS. 9A and 9B both show the first lens frame 92a,
The size of the effective light beam range 90s at the position 92b is the same, and the size of the effective light beam range 90t at the position of the second lens frames 94a and 94b on the camera body side is the same. The effective light flux ranges 90s and 90t are cross sections of the effective light path through which the light flux reaching the image frame passes, and the subject side 90s is larger than the camera body side 90t. Further, the distances and swing angles of the rotation centers 91x, 91y of the first and second lens frames 92a, 92b, 94a, 94b from the optical axis 91c, and the lens aperture 93
lens frames 92a, 92b, 94 from a, 93b, 95a, 95b
The widths of a and 94b are the same. FIG. 9 shows that under the above conditions,
Within a certain swing range, the lens openings 93a, 93b, 95a, 9
5b covers the effective luminous flux range 90s, 90t.
And the case where the second lens frames 92a, 92b, 94a, and 94b are configured.

9 (A) and 9 (B) are compared.
Since the second lens frame 94b shown in FIG. 9B is smaller than the second lens frame 94a shown in FIG. 9A, in order to make the lens frame smallest, the second lens frame 94b having the smaller effective light flux range 90t is required. It can be seen that it is the time when the second lens frame 94b swings in the long side direction of the effective light beam range 90t with respect to the lens frame 94b. This is schematically explained as follows.

That is, the lens frame needs to be made larger than the area S required to cover the effective light beam range in a stationary state by an amount corresponding to the swing. The area S of the lens frame required to cover the effective light beam in the stationary state becomes smaller as the effective light beam range itself is smaller. The area △ S of the lens frame that needs to be extra large is roughly equal to the product W × L of the one-amplitude distance W in the swing direction and the length L of the effective light beam range in the direction perpendicular to the swing direction. equal. However, the one-amplitude distance W in the swing direction is substantially constant if the swing angle is the same, and the length L of the effective light beam range has the shortest shortest side. Therefore, when both S and ΔS are the smallest, that is, when the lens frame having the smaller effective light beam range swings in the long side direction of the effective light beam, the area of the lens frame becomes the smallest.

As described above, if the second lens frame 110b is configured to be the smallest, the space around the second lens frame 110b for disposing the drive system and the detection system of the first lens frame 110a is secured. The size of the lens barrel 10 can be reduced as a whole.

The input sections 116a and 116b are provided in FIG.
As shown in FIG. 3, it partially protrudes radially outward from the frame main bodies 112a and 112b. Radial side surfaces 118a, 119a on both sides in the circumferential direction of the input portions 116a, 116b;
9b, the forward barrel 52 has contact surfaces 68a,
69a; 68b, 69b are formed, and the first and second
The swing range of the lens frames 110a and 110b is regulated. Input unit 116a of first lens frame 110a
Has an internal gear 117a on its camera body side,
The input section 116b of the lens frame 110b has an external gear 117b on its outer peripheral surface. Each gear 1 of the input units 116a and 116b
Drive gears 136 mesh with 17a and 117b, respectively, and rotate the first and second lens frames 110a and 110b about the first and second support shafts 120a and 120b.

The drive gear 136 is, as shown in FIG.
It is directly fixed to an output shaft 134 of a drive motor 130 disposed in parallel with the optical axis at a substantially equal distance from the optical axis, and is driven without passing through a reduction gear. Therefore, there is no delay in rotation transmission due to backlash of the reduction gear.

Next, the first and second lens frames 110a, 110
The support structure 10b will be described.

As shown in FIG. 13, the support shafts 120a and 120b are provided on the shafts 114a and 110b of the lens frames 110a and 110b.
114b, the torsion coil spring 12
4 and the washer 122 are inserted, and the lens frames 110a, 1
10b is attached in a state of being biased toward the camera body.

The torsion coil spring 124 is shown in FIGS.
As shown in (1), it is composed of a cylindrical coil portion 120c and hooks 124a and 124b projecting radially outward from both ends thereof. The coil portion 120c is mounted in a compressed state and urges the first and second lens frames 110a and 110b toward the camera body side, that is, toward the intermediate wall 60, so that the first and second lens frames 110a and 110b are in the optical axis direction. There is no backlash. Therefore, a focus shift due to the movement of the first and second lenses 14a and 14b in the optical axis direction is prevented.

The torsion coil spring 124 is the same as that shown in FIG.
As shown in FIGS. 1 and 12, one of the hooks 124a is attached to the forward barrel 52, and the other hook 124b is attached to the shaft supports 114a and 114b of the lens frames 110a and 110b. Thereby, the torsion coil spring 124 is connected to the first and second lens frames 110a and 110a.
b is torsionally urged clockwise as shown by arrows 128a and 128b in the figure, so that the first and second lens frames 110a and 110b
Gears 117a, 117 of input units 116a, 116b of 110b
The tooth surface on the same side always contacts b and the drive gear 136 irrespective of the rotation direction of the drive gear 136. Therefore,
A delay in rotation transmission due to backlash between the gears 117a, 117b, 136 at the time of meshing, that is, at the time of reverse rotation of the drive gear 136, etc., is prevented.

Further, the torsion coil spring 124 always urges the shaft supports 114a and 114b of the lens frames 110a and 110b in one direction with respect to the support shafts 120a and 120b. Therefore, the shafts are not fitted, that is, the support shafts 120a, 120
Fluctuation of the inclination of the lens frames 110a and 110b with respect to b is prevented.

As described above, the first and second lens frames 1
10a and 110b use a torsion coil spring 124,
It is designed to be attached to the support shafts 120a and 120b so as to prevent rattling.

Next, the mounting structure of the drive motor 130 will be described.

The drive motor 130 used in this embodiment
Is a cylindrical DC motor.
The outer diameter is smaller than that of a general motor, and the front end surface 130a (see FIGS. 14 and 15) on the output shaft 134 side is not provided with a fixing screw hole. Therefore, the exploded perspective view of FIG.
5, the drive motor 130 is temporarily attached to the motor holder 140, and the motor holder 140 to which the drive motor 130 is attached is fixed to the intermediate wall 60 of the forward barrel 52 of the lens barrel 10.

More specifically, the motor holder 140 has a motor mounting wall 144 and a base portion 142 joined in a substantially L-shape.

The motor mounting wall 144 is
, Ie, a half-walled cylindrical wall curved along the outer peripheral surface 130b. Lower inner peripheral surface 145b of motor mounting wall 144
Is a curved surface substantially equal to the outer peripheral surface 130b of the drive motor 130. Upper inner peripheral surface 145a of motor mounting wall 144
Project radially inward in a step-like manner to form positioning projections 146.
Is formed. At the lower part of the motor mounting wall 144, a rotation stopping projection 148 protruding downward is provided.

The base portion 142 protrudes radially outward from the lower portion of the motor mounting wall 144, and has an elongated hole 143 that penetrates vertically. Lower surface 142a of base portion 142
The lower inner peripheral surface 145b of the motor mounting wall 144 is formed so as to be exactly at right angles.

A motor mounting hole 62 is provided in the intermediate wall 60 of the forward barrel 52. The motor mounting hole 62 has a motor insertion hole 62a slightly larger than the outer diameter of the drive motor 130.
A positioning hole 62b having an inner diameter substantially equal to the outer diameter of the bearing portion 132 of the drive motor 130 is formed coaxially in a stepped cross section, and a part of the outer peripheral surface of the motor insertion hole 62a has
A notch groove 62c cut out in the axial direction from the motor insertion hole 62a side is formed. Intermediate wall 60 of moving cylinder 52
Is provided with a screw hole 64 at an appropriate distance from the motor mounting hole 62.

The drive motor 130 is mounted on the intermediate wall 60 of the forward barrel 52 using the motor holder 140 having the above-described structure, as described below.

First, using an adhesive 138, for example, a double-sided adhesive tape 138, the outer peripheral surface 130 of the drive motor 130 is used.
b and the lower inner peripheral surface 145b of the motor mounting wall 144 of the motor holder 140 are bonded. At this time, the drive motor 13
0 on the rear end face 130c opposite to the output shaft 134, and the positioning protrusion 1 on the motor mounting wall 144 of the motor holder 140.
The shoulder 46 abuts on the shoulder 146a. As a result, the drive motor 130 is positioned and fixed in a direction perpendicular to the lower surface 142a of the base portion 142 of the motor holder 140 and in an axial direction based on the lower surface 142a. The double-sided adhesive tape 138 is attached to the motor mounting wall 14 of the motor holder 140.
4 and the outer peripheral surface 1 of the drive motor 130
30b can be absorbed to some extent by a change in thickness, so that even if there is some variation in the outer diameter of the drive motor 130, the drive motor
It can be fixed firmly to 40. Drive motor 1
When the motor 30 is fixed to the motor holder 140, the output shaft 134 and the bearing 132 of the drive motor 130 project below the lower surface 142 a of the base 142 of the motor holder 140.

Next, the motor holder 140 to which the drive motor 130 is fixed is fixed to the intermediate wall 60. That is, the output shaft 134 side of the drive motor 130 is inserted into the motor mounting hole 62 of the intermediate wall 60, and the base portion 14 of the motor holder 140 is inserted.
The fixing screw 149 is inserted through the long hole 143 of the second
Screwed into the screw hole 64 of the motor holder 1
40 is fixed to the intermediate wall 60. At this time, the rotation stop projection 148 of the motor holder 140 is engaged with the notch groove 62 c of the motor mounting hole 62 of the intermediate wall 60, so that the positioning of the motor holder 140 is facilitated and the motor holder 140 is screwed. When the motor holder 14
0 is prevented from rotating. That is, the surface extending in the radial direction of the notch groove 62 c of the motor mounting hole 62 of the intermediate wall 60, that is, the rotation stopping surface, and the surface extending in the radial direction of the rotation stopping projection 148 of the motor holder 140, that is, the rotation stopping engagement The surfaces come into contact with each other to facilitate positioning of the motor holder 140 and prevent rotation of the motor holder 140.

When the motor holder 140 is mounted on the intermediate wall 60, the bearing 132 of the drive motor 130 fits into the positioning hole 62 b of the intermediate wall 60 and the drive motor 13
Position 0. Since the bearing 132 of the drive motor 130 has a small variation in the outer diameter, the output shaft 134 of the drive motor 130 can be accurately positioned. Further, since the lower surface 142a of the base portion 142 of the motor holder 140 abuts on the mounting surface 60a of the intermediate wall 60, the drive motor 130 fixed to the motor holder 140 is perpendicular to the mounting surface 60a of the intermediate wall 60. Supported.

That is, the output shaft 134 of the drive motor 130
Is determined by the fitting of the bearing 132 of the drive motor 130 with the positioning hole 62b of the intermediate wall 60. Also, the output shaft 1 of the drive motor 130
34 with respect to the mounting surface 60a, the drive motor 130
Mounting wall 144 of motor holder 140 for mounting
Is determined by the perpendicularity between the lower inner peripheral surface 145b of the base member 142 and the lower surface 142a of the base portion 142.

The motor insertion hole 6 of the motor mounting hole 62
The inner diameter of 2a is made slightly larger than the outer diameter of the drive motor 130, and a radial gap is provided between the rotation stopping projection 148 of the motor holder 140 and the cutout groove 62c of the motor mounting hole 62. Slot 142 in part 142
By providing 3, the variation in the outer diameter of the drive motor 130 can be absorbed.

In the first embodiment, the motor holder 14
0, the drive motor 130 is mounted at a right angle on the mounting surface 60a of the intermediate wall 60 extending in the direction perpendicular to the optical axis. Next, the horizontal wall is perpendicular to the vertical wall 180 corresponding to the intermediate wall 60. 184, and the lateral wall 1 extending in the optical axis direction.
A second embodiment in which the drive motor 130 is mounted in parallel to the mounting surface 184a of 84 will be described with reference to FIGS. In the following, a description will be given mainly of points different from the first embodiment, and the same reference numerals will be used for portions configured similarly to the first embodiment.

As shown in an exploded perspective view of FIG. 16 and an assembled cross-sectional view of FIG. 17, the motor holder 150 of the second embodiment has a motor mounting wall 154 and a base 152 joined in a substantially T-shape.

The motor mounting wall 154 is
Of the drive motor 130, the inner peripheral surface 154a of which is a curved surface substantially equal to the outer peripheral surface 130b of the drive motor 130.

The base 152 has a long hole 153 projecting radially outward from the center of the outer peripheral surface 154b of the motor mounting wall 154 and penetrating substantially in the circumferential direction. Base part 152
A surface on one side extending in the circumferential direction, that is, a lower surface 152a;
The curved center axis of the inner peripheral surface 154a of the motor mounting wall 154 is included in the same plane.

The motor holder 150 is mounted on the vertical
It is designed to be attached to the intersection between the zero and the horizontal wall 184. That is, the motor mounting hole 18 is formed in the vertical wall 180.
2 are provided. The motor mounting hole 182 has an inner diameter substantially equal to the outer diameter of the bearing 132 of the drive motor 130.
Mounting surface 1 of side wall 184 for mounting motor holder 150
84a is the same height as the center of the motor mounting hole 182 of the vertical wall 180. The side wall 184 has a motor mounting hole 182.
A groove 186 is formed by curving downward in the vicinity of. The mounting surface 184a of the side wall 184 is provided with a screw hole 189 at an appropriate position.

As in the first embodiment, the drive motor 130 uses a double-sided adhesive tape 138 to drive the drive motor 130.
Is bonded to the inner peripheral surface 154a of the motor mounting wall 154 of the motor holder 150. The double-sided adhesive tape 138 can firmly fix the drive motor 130 to the motor holder 150 even if the outer diameter of the drive motor 130 varies due to the thickness change. 132 and output shaft 1
The central axis of 34 and the lower surface 152a of the base 152 are included in the same plane.

The motor holder 150 to which the drive motor 130 is fixed is fixed to the mounting surface 184a of the lateral wall 184. That is, the output shaft 134 and the bearing 132 of the drive motor 130 are inserted into the motor mounting holes 182 of the vertical wall 180, and the elongated holes 153 of the base 152 of the motor holder 150 are inserted.
The fixing screw 159 is inserted through the screw hole 189 of the side wall 184.
And the lower surface 152a of the base 152 of the motor holder 150 and the mounting surface 184a of the lateral wall 184 are crimped to fix the motor holder 150 to the lateral wall 184.

The drive motor 130 thus mounted is connected to the vertical wall 18 as shown in the front view of FIG.
The position in the vertical wall 180 direction is accurately determined by the zero motor mounting hole 182. The vertical wall 1 of the drive motor 130
The inclination with respect to 80 is determined by the mounting surface 184a of the lateral wall 184. That is, as shown in the side view of FIG. 17B, the central axis of the drive motor 130 is included in the same plane as the mounting surface 184a of the horizontal wall 184, and in a plane perpendicular to the vertical wall 180 and the horizontal wall 184, It is perpendicular to the vertical wall 180 and parallel to the mounting surface 184a of the horizontal wall 184. Note that, similarly to the first embodiment, the motor holder 1
A positioning protrusion may be provided on the inner peripheral surface 154a of the 50 motor mounting wall 154 to position the drive motor 130 in the axial direction.

Next, a third embodiment in which the mounting structure of the lens support frames 110x and 110y of the anti-vibration optical system 14 is different from the first embodiment will be described with reference to FIGS. In the following, a description will be given mainly of points different from the first embodiment, and the same reference numerals will be used for portions configured similarly to the first embodiment.

First and Second Lens Frames 1 of Third Embodiment
10x and 110y are exploded perspective views of main parts of the second lens support frame 110y in FIG. 18 and a part of a cylindrical wall 162 of the shaft support 160 is continuously cut in the axial direction as shown in an assembly view of FIG. It has a chipped half-split shape, and the shaft hole 1
61 has an opening 163 communicating therewith. This opening 1
A pair of upper contact surfaces 164a and 164b extending in the axial direction and forming an angle of about 120 degrees with each other are formed on the upper side of the inner peripheral surface of the cylindrical wall 162 so as to face the tube 63. The bisector of the pair of upper contact surfaces 164a and 164b passes through the center of the shaft hole 161 of the shaft support 160 and the center of the opening 163. Similarly, a pair of lower contact surfaces 165a and 165b are formed below the inner peripheral surface of the cylindrical wall 162. In addition, spring engagement protrusions 166a and 166b that protrude in the axial direction are formed on the upper and lower end surfaces of the cylindrical wall 162 of the shaft support 160, respectively.

The leaf spring member 170 is engaged with the upper and lower spring engaging projections 166a and 166b. The leaf spring member 170 is, as shown in FIG.
It is made of one plate-like member, and has a center connecting portion 174 and engaging ring portions 172a and 172b at both ends bent at substantially right angles to the connecting portion 174.

The connecting portion 174 is provided with an engaging ring portion 172a, 1
On the same side as the bent side of 72b, it is curved in the shape of a letter, and its central portion 175 projects most. A substantially circular opening 173 is formed in each of the pair of engagement ring portions 172a and 172b.
The spring engaging projections 166a, 16 of the shaft support 160 of x, 110y
6b. The pair of engagement ring portions 172a and 172b are parallel to each other, and the distance therebetween is determined by the upper and lower step surfaces 168a and 168 of the cylindrical wall 162 of the shaft support portion 160.
68b.

The lens frames 110x and 110y are
The leaf spring members 170 are attached to the 0 spring engagement projections 166a and 166b.
After being attached, they are attached to the support shafts 120a and 120b.

That is, first, the interval between the pair of engagement ring portions 172a and 172b of the leaf spring member 170 is increased, and the spring engagement protrusion 16 of the shaft support portion 160 of the lens frames 110x and 110y is enlarged.
The engagement ring portion 172 of the leaf spring member 170 is provided on 6a and 166b.
a, 172b are fitted. Inset leaf spring member 170
Since the distance between the engagement ring portions 172a and 172b returns to the original position, the spring does not come off from the spring engagement projections 166a and 166b of the shaft support portion 160. At this time, the connecting portion 174 of the leaf spring member 170 faces the opening 163 of the shaft supporting portion 160, and the central portion 175 of the connecting portion 174 projects toward the shaft hole 161 of the shaft supporting portion 160.

Next, as shown in FIG. 19B, the support shafts 120a and 120b are passed through the shaft holes 161 of the shaft support 160 with which the leaf spring members 170 are engaged, and the coil spring 178 is connected to the support shafts 120a and 120a. 120b, the front wall 6 of the forward barrel 52
The lens frames 110x and 110y are mounted between the intermediate wall 6 and the intermediate wall 60.

The leaf spring member 170 attached in this manner has a central portion 175 of the connecting portion 174 in which the support shaft 12 is mounted.
Since the engagement ring portions 172a and 172b pull the shaft support 160 toward the support shafts 120a and 120b, a pair of upper and lower contact surfaces 164a of the shaft support 160 of the lens support frames 110x and 110y are urged. 164b, 165a, 165b
Are brought into contact with the support shafts 120a and 120b. And
As shown in FIG. 19A, when viewed from the axial direction, one point between a pair of abutting surfaces 164a, 164b or 165a, 165b and a central portion 175 of the connecting portion 174 of the leaf spring member 170 In addition, when viewed from the direction perpendicular to the axis as shown in FIG. 19B, two points of the upper and lower contact surfaces 164a, 165a or 164b, 165b of the shaft support 160 and the leaf spring member More specifically, at a total of three points, one point at the center part 175 of the connection part 174 of the joint 170, and more precisely, four points at a pair of upper and lower contact surfaces 164a, 164b, 165a, 165b of the shaft support part 160.
The point and the central portion 175 of the connecting portion 174 of the leaf spring member 170
The lens support frames 110x, 110y
The leaf spring member 170 contacts the support shafts 120a and 120b.

Therefore, the lens frames 110x, 110y
Are supported without being fitted to the support shafts 120a and 120b.

18 and 19, the second lens 1
Although only the main part of 10y is illustrated, the pivot 160 of the first and second lens support frames 110x, 110y is
As shown in plan views of the main parts in FIGS. That is, as shown in FIG. 20, the first lens frame 110x is configured such that the opening 163 of the shaft support 160 is located on the input unit 116a side of the first lens frame 110x, that is, on the optical axis side. On the other hand, regarding the second lens frame 110y, as shown in FIG.
63 is configured to be on the side opposite to the input section 116b of the second lens frame 110y, that is, on the side opposite to the optical axis.

[0098] The driving gear 136 is constructed in this manner.
The force acting on the first and second lens frames 110x and 110y by meshing with the gears 117a and 117b of the input portions 116a and 116b is applied to the pair of upper and lower contact surfaces 16 of the shaft support 160.
4a, 164b, 165a, and 165b.

That is, as shown in FIG. 20, when the internal gear 117a of the input portion 116a meshes with the drive gear 136, the first lens frame 110x moves from the support shaft 120a to the drive gear 136 as indicated by an arrow 190a. Receive a force in the direction to. If the force is received by the leaf spring member 170, that is, unlike the structure shown in FIG. 20, the opening 163 of the shaft support 160 is connected to the input portion 116a.
If the spring biasing force of the leaf spring member 170 is not increased, the first lens frame 110x moves in the direction of the drive gear 136a, and the first lens 14a moves in a direction substantially perpendicular to the control direction. , And the problem that the imaging position cannot be controlled may occur.

The second lens frame 110y is connected to the input unit 1
As the external gear 117b of 16b meshes with the drive gear 136, the external gear 117b receives a force in the direction from the drive gear 136b to the support shaft 120b as shown by an arrow 190b in FIG. If this force is received by the leaf spring member 170, that is, if the opening 163 of the shaft support 160 is provided on the input portion 116b side, a similar problem occurs, unlike the configuration shown in FIG.

20 and 21, the force acting on the first and second lens frames 110x and 110y by meshing with the drive gear 136 is applied to the shaft support 160.
Upper and lower contact surfaces 164a, 164b, 165a, 165
It is made to receive in b.

Therefore, the first and second lens frames 110 can be provided without increasing the spring biasing force of the leaf spring member 170.
x, 110y can be configured to be stably driven to rotate.

The present invention is not limited to the above embodiments, but can be implemented in other various modes.

[Brief description of the drawings]

FIG. 1 is a sectional view of a lens barrel according to a first embodiment of the present invention. This shows the retracted state.

FIG. 2 is a sectional view of the lens barrel in FIG. 1 in a wide end state.

FIG. 3 is a sectional view of the lens barrel in FIG. 1 in a tele end state.

FIG. 4 is a sectional view of a lens barrel similar to FIG. The sectional position is different from that of FIG.

FIG. 5 is an exploded perspective view of a main part of the lens barrel of FIG. 1;

FIG. 6 is a development view of a cam ring of the lens barrel in FIG. 1;

7 is a development view of a cam ring having a configuration different from that of FIG. 6;

FIG. 8 is a development view of a cam ring having another configuration different from that of FIG. 6;

FIG. 9 is a schematic view of a lens frame of an image stabilizing optical system.

FIG. 10 is an assembly front view of a vibration-proof optical system of the lens barrel in FIG. 1;

FIG. 11 is a front view of a main part of the first lens of FIG. 10;

FIG. 12 is a front view of a main part of the second lens of FIG. 10;

13A is a cross-sectional view of a main part along line AA of FIG. FIG. 13B is a cross-sectional view of a main part along line BB in FIG.

FIG. 14 is an exploded perspective view of a mounting structure of a drive motor of the vibration proof optical system.

15 is an assembled sectional view of FIG.

FIG. 16 is an exploded perspective view of a drive motor mounting structure of an image stabilizing optical system of a lens barrel according to a second embodiment of the present invention.

FIG. 17 is an assembled sectional view of FIG. 16;

FIG. 18 is an exploded perspective view of a main part of a lens frame of a vibration-proof optical system of a lens barrel according to a third embodiment of the present invention.

FIG. 19 is an assembly view of a main part of FIG. 18; (A) is a main part assembly plan view, (B) is a main part assembly sectional view.

FIG. 20 is a plan view of a main part of a first lens of the image stabilizing optical system of FIGS. 18 and 19;

FIG. 21 is a plan view of a main part of a second lens of the image stabilizing optical system of FIGS.

FIG. 22 is a development view of a conventional cam ring.

[Explanation of symbols]

 Reference Signs List 10 lens barrel 12 main photographing optical system 12a first lens group 12b second lens group 12c third lens group 14 anti-vibration optical system 14a first lens 14b second lens 16 focus unit 18 shutter unit 20 fixing unit 22 fixing cylinder 24 Lead 26 Straight guide groove 30 First moving portion 32 Cam ring 32s Rear end 32t Tip 34 Lead engaging portion 36 First cam 36a Wide end position 36b Tele end position 37 Second cam 37a Wide end position 37b Tele end position 38 Third Cam 38a Wide end position 38b Tele end position 39 First thin cylinder 40 Straight advance cylinder 42 Straight advance engagement part 44 Cylindrical part 46 Guide arm 50 Second movement part 52 Advance cylinder 54 Peripheral wall 56 Guide groove 58 Cam follower 59 Second thin cylinder 60 Middle Wall (device body) 60a Mounting surface (mounting surface) 62 Motor mounting hole 62a Motor insertion Insertion hole 62b Positioning hole (motor positioning hole) 62c Notch groove (rotation stop surface) 64 Screw hole 66 Front wall 68a, 68b, 69a, 69b Contact surface 70 Focus block 72 Main body 73 Flange part 74 Straight guide groove 75 Straight guide Groove 76 Cam follower 80 Third lens holder 82 Main body 84 Cam follower 90s, 90t Effective light flux range 91x, 91y Rotation center 91c Optical axis 92a, 92b First lens frame 93a, 93b Lens opening 94a, 94b Second lens frame 95a, 95b Lens opening 96 Optical axis direction 98 Circumferential direction 99 Forward 102 Light emitting element 104 Position detecting element 110a, 110b, 110x, 110y Lens frame 112a, 112b Frame body 114a, 114b Shaft support 115a, 115b Shaft hole 116a, 116b Input 117a, 117b Gear 118a , 118b, 119a, 119b Side 120a, 120b Support Shaft 122 Washer 124 Torsion coil spring 124a, 124b Hook 124c Coil portion 130 Drive motor 130a Front end surface 130b Outer peripheral surface 130c Rear end surface (end surface) 132 Bearing portion 134 Output shaft 136 Drive gear 138 Adhesive 140 Motor holder (attachment member) 142 Base Portion 142a Lower surface (mounting reference surface) 143 Slot hole 144 Motor mounting wall 145a Inner peripheral surface 145b Inner peripheral surface (motor mounting surface) 146 Positioning protrusion 146a Shoulder (motor contact surface) 148 Rotation stop protrusion (rotation stop engagement surface) ) 149 Fixing screw 150 Motor holder (mounting member) 152 Base part 152a Lower surface (mounting reference surface) 153 Long hole 154 Motor mounting wall 154a Inner circumferential surface (motor mounting surface) 154b Outer circumferential surface 159 Fixing screw 160 Shaft support 161 Shaft hole 162 Tube 163 Opening 164a, 164b Upper contact surface 165a, 165b Lower contact surface 166a, 166b Spring engaging projection 168a, 168b Stepped surface 170 Leaf spring member 172a, 172b Engagement ring 173 Opening 174 Connection 175 Central portion 178 Coil Spring 180 Vertical wall (device main body, upright wall) 182 Motor mounting hole (motor positioning hole) 184 Side wall (device main body) 184a Mounting surface (mounting surface) 186 Groove 186a Inner peripheral surface 189 Screw hole

Claims (6)

[Claims] 1. A mounting structure for mounting a motor (130) to an apparatus main body (60), comprising: a motor mounting surface (145b) shaped along an outer peripheral surface (130b) of the motor (130); (145b)
A mounting member (14) having a mounting reference surface (142a) extending in a direction orthogonal to the axial direction of the motor (130) when the outer peripheral surface (130b) of the motor (130) is moved along
0), and the motor mounting surface (14) of the mounting member (140).
5b), the outer peripheral surface (130b) of the motor (130) is adhesively bonded, and the mounting reference surface of the mounting member (140) is mounted.
A mounting structure for a small motor, wherein (142a) is crimped and fixed to a mounting surface (60a) of an apparatus body (60). 2. The mounting member (140) is provided on the outer peripheral surface (13) of the motor (130) on the motor mounting surface (145b).
0b) is adhesively bonded to the end face (1) of the motor (130).
The mounting structure for a small motor according to claim 1, further comprising a motor contact surface (146a) for restricting an axial position of the motor (130) by contacting the motor (30c). 3. The apparatus main body (60) includes a mounting member (140) having a motor (130) adhesively bonded thereto.
0) when being fixed by crimping to the bearing (1) of the motor (130).
32) a motor positioning hole (62b) into which the outer peripheral surface fits;
A rotation stop surface (62c) extending substantially radially with respect to the center of the motor positioning hole (62b), wherein the mounting member (140) is fixed by crimping to the apparatus main body (60). The rotation stop surface (62) of the device body (60)
The small motor mounting structure according to claim 1, further comprising a detent engagement surface (148) abutting against (c). 4. A motor (130) is connected to an apparatus main body (180, 18).
4) The mounting structure for mounting on the motor (130), the motor mounting surface (154a) along the outer peripheral surface (130b) of the motor (130), and the motor mounting surface (154a)
A mounting member (150) having a mounting reference surface (152a) extending parallel to the axial direction of the motor (130) when the outer peripheral surface (130b) of the motor (130) is moved along the mounting member (150). The motor mounting surface (15) of the mounting member (150)
4a), the outer peripheral surface (130b) of the motor (130) is adhesively bonded, and the mounting reference surface of the mounting member (150) is mounted.
(152a) is attached to the mounting surface (1) of the device body (180, 184).
84a) A mounting structure for a small motor, which is fixed by crimping. 5. The apparatus main body (180, 184) has an upright wall (180) orthogonal to the mounting surface (184a), and the upright wall (180) has a motor (130) adhesively bonded thereto. When the member (150) is crimped and fixed to the mounting surface (184a) of the apparatus main body (180, 184), a motor positioning hole (182) into which the outer peripheral surface of the bearing (132) of the motor (130) fits. The mounting structure for a small motor according to claim 4, wherein the mounting structure is provided. 6. An outer peripheral surface (130) of the motor (130) is provided on the motor mounting surface (154a) of the mounting member (150).
When b) is adhesively bonded, the axis of the output shaft (134) of the motor (130) and the mounting reference plane (152a) of the mounting member (150) are included in the same plane, (180, 184), the center of the motor positioning hole (182) of the upright wall (180), and the device body (180, 184).
The mounting structure for a small motor according to claim 5, wherein the mounting surface (184a) of the small motor (184) is included in the same plane.