JP2001045694A - Motor-fitting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve productivity of a motor-fitting apparatus in the apparatus comprising a motor. SOLUTION: A motor 3, having a recess 3f at the end surface, is provided. A displacing portion assuring deformation, including a projected portion 2h to be engaged with the recess 3f, is also provided, and a base portion 3a to which a motor 3 is fitted is also provided. An engaging portion (small screw with a stepped portion 55), that is provided to the motor to fix the motor 3 to the base portion 2a, is provided. Moreover, an engaging portion (hole 2b, guide hole 2d), that is provided at the base portion 2a for engagement with the engaging portion (55), is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motor mounting device, and more particularly to a motor mounting device for mounting a motor for supplying a driving force for driving a predetermined movable portion in a device such as a camera.

[0002]

2. Description of the Related Art Conventionally, various types of electronic devices and the like having a small motor and the like, and having a movable portion capable of performing a predetermined operation by using a driving force supplied by the small motor are generally used. Is widely spread. For example, in a small-sized camera for photographing and the like, a driving force is supplied to a film feeding mechanism for performing a rewinding operation or a winding operation of a photographing film in a film cartridge loaded in the camera body. In addition, small motors and the like are used.

A small motor provided in such a conventional device such as a camera needs to be securely fixed to a fixing member of the device to which the motor is applied. In a conventional general camera, efforts are being made to simplify the manufacturing process by, for example, designing various constituent members into units for each function. In a conventional camera, a small motor for feeding a film is integrated into a film feeding mechanism unit composed of a plurality of gear trains for transmitting the driving force, and is unitized. It is usually designed to be combined with other necessary units such as a camera and a finder unit to form one camera.

For example, Japanese Patent Application Laid-Open No. 4-340529 discloses a motor mounting device for mounting a motor for driving a film winding spool at a predetermined position of a camera. In this motor mounting device, the other end of the motor is fixed to a fixing member of the camera with a bolt or the like, and a spool shaft is disposed so as to be slidable with respect to the fixing member on the camera side. The motor, the spool shaft and the film feeding mechanism unit connected to the spool shaft are integrated.

In the means disclosed in Japanese Utility Model Laid-Open Publication No. Sho 60-141658, a flange is provided on an end face of a case member forming a motor, and the flange is mounted on a substrate serving as a fixing member inside the camera. The motor unit is formed so as to be detachable by being locked to a locking piece provided in the motor unit.

In recent years, there has been a strong demand for further miniaturization of various devices such as cameras equipped with a small motor and the like, and in response to this, further miniaturization design has been required. Is needed.

[0007]

However, as described above, a driving force transmission mechanism or the like composed of a gear train for transmitting the driving output of the small motor is disposed near the small motor or the like. However, in this case, as a result of the design of the entire device being miniaturized, individual components are made finer, and each component is arranged in a predetermined space inside the device with a margin. There is a tendency for it to be difficult.

[0008] Therefore, as described above, if each component including a motor is arranged in a narrow space and at the same time each component is reduced, there is a problem that the assembling work in the manufacturing process of the device becomes difficult. For example, when fixing a motor to a predetermined fixing member, fixing and assembling work using a screw member or the like is necessary for a space that is a narrow hole or the like and cannot be visually operated directly. In some cases,

In such a case, since extremely careful attention is required in performing the assembling work, the work efficiency is reduced and the number of assembling steps in manufacturing is required. There is a problem that the manufacturing cost of the device itself is increased.

In the means disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 4-340529, in order to fix the motor inside the spool shaft provided inside the camera body, the inside of the camera is directly visually inspected with a bolt or the like from outside. Since the motor to be installed in a place where it can not be fixed is fixed,
There is a problem that work efficiency is deteriorated.

In the means disclosed in Japanese Utility Model Laid-Open Publication No. 60-141658, since the shape of the case member of the motor is formed in a special form, the motor is dedicated to a specific device. Will be lost. Therefore, it becomes necessary to manufacture a dedicated case member, which leads to an increase in manufacturing cost.
Further, in this means, since a flange portion protruding from the case member toward the side surface is provided, it may be a factor that hinders space saving.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and an object of the present invention is to employ a general-purpose motor with general versatility in a small device or the like having a motor or the like. A motor mounting device that contributes to improving the work efficiency related to the assembling work and can ensure extremely good productivity can be realized with a simpler configuration.

[0013]

In order to achieve the above object, a motor mounting device according to a first aspect of the present invention comprises a motor having a concave portion on an end face and a deformable displacement portion having a convex portion fitted into the concave portion. A base portion to which the motor is attached, a locking portion provided on the motor, for fixing the motor to the base portion, and an engaging portion provided on the base portion and engaging with the locking portion. It is characterized by having.

According to a second aspect of the present invention, in the motor mounting device according to the first aspect, the protrusion is provided on an end face of the motor, and the recess is provided on an end face of the base. I do.

According to a third invention, in the motor mounting device according to the first invention or the second invention, the locking portion is formed of a stepped screw, and the engagement portion is provided on an end surface of the base. It is characterized by comprising a circular arc-shaped hole.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is an exploded perspective view schematically showing a device to which the motor mounting device according to the first embodiment of the present invention is applied. In the present embodiment, a small camera (hereinafter simply referred to as a camera) will be described as an example of a device to which the motor mounting device is applied.

FIG. 2 is an enlarged exploded perspective view of a main part of the camera, showing a detailed configuration inside a film winding chamber (spool chamber) including a motor. FIG. 3 is an enlarged perspective view of an essential part showing only a motor of the present camera taken out and partially enlarged, showing a surface on which a rotating shaft is arranged, and partially omitted. . And FIG.
FIG. 2 is an enlarged vertical sectional view of a main part showing the vicinity of a film winding chamber (spool chamber) of the present camera, and shows a cross section when viewed from the front side of the present camera.

A camera as a device to which the motor mounting device of the present embodiment is applied has a form in which a plurality of units having functions required for taking a picture are integrally assembled as shown in FIG. And a camera body 1 disposed to cover the camera body 1 from the front side and the back side.
Front cover 1 serving as an exterior member protecting camera body 1
1 and a rear cover 12 and the like.

The camera body 1 is provided with a lens barrel unit 9 for holding a photographing lens and the like near a substantially central portion on the front side, and a photo film roll film is wound inside one end portion. A film cartridge chamber 1A in which a film cartridge (not shown) housed in the above-described form is detachably disposed, and an exposed portion of a roll-shaped film led out from the inside of the film cartridge to the outside at the other end. A film winding chamber for winding and storing the film, that is, a spool chamber 1B, is arranged so as to sandwich the lens barrel unit 9 therebetween.

At a predetermined position in the vicinity of the lens barrel unit 9, a power supply battery 10 for supplying electric power for driving a driving mechanism and the like of the camera is arranged. An opening (not shown) for inserting and removing the power supply battery 10 is formed at a predetermined position of the front cover 11 facing the power supply battery 10. A cover member 11a is provided on the front side of the cover 11 so as to be detachable.

A finder unit 6 formed by an optical system for forming an observation image, a distance measuring unit, and the like and having a frame-shaped opening in the front-rear direction of the camera is disposed at a predetermined position above the lens barrel unit 9. Have been. The finder unit 6 is provided with three windows on the front side. The central window is a finder window constituting a part of a finder optical system for forming an observation image. A pair of windows arranged side by side on the two sides of the window are two distance measuring windows that form part of a distance measuring unit that acquires data for calculating information on the distance to the subject.

A flash light emitting unit formed with a flash light emitting portion (not shown) such as a xenon tube is provided above the film cartridge chamber 1A disposed at one end of the camera. 7 are arranged, and the flash light emitting unit 7
Are arranged side by side in the finder unit 6. And
At a predetermined position on the back side of the flash light emitting unit 7, a flash circuit board 8 for handling a predetermined electric signal for driving the flash light emission is disposed.

On the other hand, a film feeding unit 2 is disposed on the bottom side of the camera body 1 so as to transmit a driving force from a driving means such as a motor 3 when the film is fed. The film feeding unit 2 is composed of various components such as a driving force transmission mechanism including various gears and the like, and a cylindrical motor 3 for transmitting a driving force to the driving force transmission mechanism. I have.

The film feeding unit 2 has an exterior part formed by a frame 2A and a bottom plate 2B.
In a space formed between the two, a power transmission means or the like comprising the above-described plurality of gear trains is disposed (not shown in FIG. 1; see FIG. 4; details will be described later).

The motor 3 is connected to the film feeding unit 2 by a stepped screw 55 shown in FIG. In this case, the rotating shaft 3c of the motor 3 is arranged toward the film feeding unit 2 and is arranged so as to be substantially perpendicular to the upper surface of the underframe 2A. An outer diameter portion on one end side (upper side in FIGS. 1 and 4; hereinafter, referred to as an upper end side) of the motor 3 is formed on a cylindrical wall portion 1c (second fixing member) protruding from the upper surface of the spool chamber 1B. The motor 3 is disposed so as to be fitted inside, so that the upper end surface of the motor 3 is exposed to the upper part of the spool chamber 1B.

The other end of the motor 3 (the lower end in FIGS. 2 and 4) is a take-up spool shaft 13 rotatably housed in the spool chamber 1B (see FIGS. 2 and 4). Hereinafter, it is arranged so as to be housed inside a spool shaft (not shown in FIG. 1; details will be described later).

On the other hand, a power battery 1
Two terminals 3a and 3b provided to receive power supply from 0 are provided. These two terminals 3a
3b is formed of an elastically deformable member having a conductivity and a substantially inverted L-shape. This allows two terminals 3
In a and 3b, the respective arm portions on the distal end side are freely displaceable in a direction along the rotation axis 3c of the motor 3.

Further, a second notch 3e is formed at a part of the upper end surface of the motor 3, and a part of the second notch 3e is further extended from the cylindrical wall 1c. The locking claw at the tip of the arm 1g abuts to prevent rotation of the motor 3 itself and also prevent the motor 3 from dropping off. That is, the arm portion 1g of the cylindrical wall portion 1c and the second cutout portion 3e constitute a second motor drop prevention means.

Then, the above-mentioned film cartridge chamber 1
A, a spool chamber 1B, a film feeding unit 2, a finder unit 6, a flash light emitting unit 7, a flash circuit board 8, a lens barrel unit 9, and other units are integrated to constitute the camera body 1.

Further, on the upper surface side of the camera body 1,
An electric wiring printed circuit board 4 (hereinafter, simply referred to as a printed circuit board) having mounted thereon electric parts such as a CPU 4c and provided with wiring patterns on both front and back sides is mounted and fixed to the camera body 1 by a plurality of screws 5. It has become. On the back side (the lower side in FIG. 1) of this printed circuit board 4,
A plurality of conductor patterns and the like are formed for supplying electric power to the motor 3 and the like. At predetermined positions facing the two terminals 3 a and 3 b of the motor 3, predetermined electric contacts ( (Not shown).

Therefore, when the printed circuit board 4 is mounted on the upper surface of the camera body 1, the electric contacts on the printed circuit board 4 are connected to the two terminals 3a and 3b of the motor 3.
, Whereby an electrical connection between the two is ensured. At this time, the two terminals 3a and 3
Since b is formed by the elastic deformation member as described above, b is slightly bent by its own elastic force. Thus, a predetermined contact pressure is always generated between the electric contact on the printed circuit board 4 and the two terminals 3a and 3b on the motor 3 by the elastic force of the two terminals 3a and 3b. I have.

The printed circuit board 4 has screw holes 4d, 4e and 4f at predetermined positions.
In response, the mounting bosses 1a
1b and 1d are provided, and each is fastened by a plurality of screws 5. This makes the printed circuit board 4
Are securely fixed at the upper part of the camera body 1.

In this manner, for the unit in which the camera body 1 and the printed circuit board 4 are integrated, the front cover 11 from the front side and the rear cover 12 from the back side.
The camera is configured so as to cover each of the cameras.

Next, in the present camera, a detailed configuration near the mounting portion of the motor 3 to the film feeding unit 2 will be described below mainly with reference to FIGS.

The motor 3 is formed in a cylindrical shape, and has two terminals 3a and 3a on its upper end face as described above.
b and a second notch 3e is formed. A rotating shaft 3c is rotatably provided at the other end, and a pinion gear 3d is provided on the rotating shaft 3c.
Is fixed. Then, two screw holes 3g are provided on the surface (lower end surface) on which the rotating shaft 3c is provided, as shown in FIG. A stepped screw 55 having a step having a predetermined length is screwed into the screw hole 3g.

When the stepped screw 55 is mounted on the motor 3, the stepped screw 55
As shown in FIG. 3, the motor 3 is set to protrude from the lower end surface by a predetermined length.

That is, when the stepped screw 55 is screwed in until the step end surface 55a (see FIG. 2) abuts on the lower end surface of the motor 3, the rotation of the stepped screw 55 in the fastening direction is restricted. The screw 55 with the same step
It is in a state of being fixed integrally with the. At this time, the stepped screw 55 is fixed so as to protrude from the lower end surface of the motor 3 by a predetermined length, that is, by the length of the stepped portion.

Further, a spring portion 51a (see FIG. 2) of a leaf spring 51 to be described later is fitted into a predetermined position on the outer peripheral edge of the lower end surface of the motor 3 when the motor 3 is mounted.
The first notch 3f (see FIGS. 2 and 3), which is a locked portion that prevents the motor 3 from falling off while being locked by this, and also prevents the motor 3 from falling off. )
Are formed. That is, the spring portion 51a of the leaf spring 51
The first notch 3f and the first notch 3f constitute a motor drop prevention means.

On the other hand, the underframe 2A of the film feeding unit 2
The spool shaft 1B is formed so as to protrude substantially at the center of the floor surface of the spool chamber 1B, and is located at a predetermined position on the outer peripheral surface.
A cylindrical portion 2a (fixing member) having a second engaging portion 2e into which an inner wall surface of one end of the third member 3 is fitted is integrally provided. At the upper end surface of the cylindrical portion 2a, a motor 3
A circular center hole 2c through which the rotary shaft 3c and the pinion gear 3d penetrate, and two holes 2b are formed at predetermined positions on a concentric circle centered on the center hole 2c. From 2b, a guide hole 2d extending in a direction along the circumference and having a predetermined length is continuously provided.

That is, the two perforations 2b penetrate the head of the stepped screw 55 attached to the motor 3, and from this state, when the motor 3 itself is rotated with respect to the cylindrical portion 2a, The holes 2d guide the movement of the step portions of the stepped screws 55, respectively.

When the stepped portion of the stepped screw 55 is at a position penetrating the guide hole 2d, the motor 3 to which the two stepped screws 55 are attached can be pulled upward in the same state. It is configured so that it cannot be done.

Accordingly, the diameter of the perforation 2b is set to have a size that can penetrate the head of the stepped screw 55, while the width of each guide hole 2d is set to the body of the stepped screw 55. Is set to be slightly larger than the diameter of the body part and smaller than the diameter of the head of the screw 55.

As described above, the stepped screw 55 as a locking portion attached to the motor 3 for fixing the motor 3 to the cylindrical portion 2a (base portion), and the stepped screw provided on the upper end surface of the cylindrical portion 2a. Perforation 2b as an engaging portion engaging with 55
And the guide hole 2d, the film feeding unit 2
And the motor 3 are connected.

Incidentally, the film feeding unit 2 and the motor 3
Further, a leaf spring 51 which is a spring member for urging the motor 3 and the cylindrical portion 2a in a direction for separating the motor 3 and the cylindrical portion 2a from each other is sandwiched between them.

The leaf spring 51 has the same shape and the same size as the center hole 2c, two holes 2b and the guide hole 2d formed in the upper end surface of the cylindrical portion 2a. Center perforation 51 for penetrating pinion gear 3d
c and two perforations 51 for penetrating the head of the stepped screw 55
A guide hole 51d that penetrates the step portion of the stepped screw 55 and the head of the stepped screw 55 is formed. Further, the leaf spring 51 is further provided with two spring portions 51a which function as elastic springs by being displaced in the thickness direction of the leaf spring 51 at the outer peripheral edge.

In the flat portion of the leaf spring 51, small through holes 51e are further provided at two predetermined positions. The small through-holes 51e fit into two small-diameter cylindrical projections 2f provided on the upper end surface of the cylindrical portion 2a, respectively, and serve to determine a relative position between the leaf spring 51 and the cylindrical portion 2a. At the same time, when the motor 3 is assembled to the cylindrical portion 2a via the leaf spring 51, it also serves to prevent the leaf spring 51 from shifting from a predetermined position.

Further, a spool shaft 13 is rotatably mounted so as to cover the outer peripheral portion of the motor 3. The spool shaft 13 has a substantially cylindrical shape having an opening at one end as shown in FIG. 2, and a spool gear 13a is formed on an outer peripheral surface of a flange provided at one end.

On the inner wall surface at the lower end of the spool shaft 13, a second engaging portion (fitting portion) 2e provided at a predetermined position on the outer peripheral surface of the cylindrical portion 2a of the film feeding unit 2 is provided. The spool shaft 13 is engaged (fitted), whereby the spool shaft 13 is rotatably supported.

On the other hand, as shown in FIG. 4, on the inner wall surface at the upper end of the spool shaft 13, a spool chamber 1B on the camera body 1 side is provided.
The spool shaft 13 is turned around a substantially cylindrical first engagement portion (fitting portion) 1f which is formed integrally with the inside of the spool chamber 1B and is provided so as to slightly project inward from the upper wall surface of the spool chamber 1B. It is movably engaged.

Therefore, the spool shaft 13 is connected to the motor 3
Is accommodated in the spool chamber 1B at the upper end side by a first engaging portion 1f, and at the lower end side by a second engaging portion 2e of a cylindrical portion 2a of an underframe 2A of the film feeding unit 2 in a rotatable manner. Will be supported.

On the other hand, as shown in FIG. 4, inside the cylindrical portion 2a of the film feeding unit 2, the rotational driving force output from the motor 3 is transmitted to the spool shaft 13 and other driving units (not shown). Power transmission means such as a plurality of gear trains are provided to transmit the power. This power transmission means is configured as follows.

That is, the inside of the cylindrical portion 2a has a plurality of first
The first consisting of the planetary gear 14 and the first carrier 19, etc.
Two sets of planetary gear trains, a planetary gear train and a second planetary gear train including a plurality of second planetary gears 15 and second carriers 16 and the like, are provided. An internal gear 2Aa is formed on the inner wall surface of the cylindrical portion 2a.

The first planetary gear train meshes with the internal gear 2Aa of the cylindrical portion 2a, and at the same time, meshes with the pinion gear 3d of the motor 3, and a plurality of first planetary gears 14, and the plurality of first planetary gears. A substantially circular first carrier 19 which rotatably supports the gear 14;
The first sun gear 19a is formed integrally with the first sun gear 19a.

The plurality of first planetary gears 14 are rotatably supported by a plurality of support shafts provided on the upper surface side of the first carrier 19, whereby the first carrier 1 is rotated.
9 at a predetermined position. The first sun gear 19 a is formed integrally with the first carrier 19 at a substantially central portion on the lower surface side of the first carrier 19.

The second planetary gear train meshes with the internal gear 2Aa of the cylindrical portion 2a, and at the same time, a plurality of second planetary gears 15 mesh with the first sun gear 19a.
And a plurality of second planetary gears 1
Carrier 16 that rotatably supports the second carrier 5, and a second sun gear 1 that is formed integrally with the second carrier 16.
6a.

The plurality of second planetary gears 15 are rotatably supported by a plurality of support shafts provided on the upper surface side of the second carrier 16.
6 at a predetermined position. The second sun gear 16 a is formed integrally with the second carrier 16 at a substantially central portion on the lower surface side of the second carrier 16. The rotation shaft of the second carrier 16 is integrally formed with a rotation shaft so as to protrude downward. The rotating shaft is fitted into a hole provided at a predetermined position of the bottom plate 2B of the film feeding unit 2. Thus, the second carrier 16 is rotatably supported by the shaft.

The second sun gear 16 of the second carrier 16
The spur gear 17 rotatably supported by a shaft provided at a predetermined position of the bottom plate 2B meshes with a. Further, the spur gear 17 has both end shafts at predetermined positions on the ceiling surface of the underframe 2A and the floor surface of the bottom plate 2B, respectively.
Lower gear portion 18 of a two-stage gear 18 rotatably supported by a pair of holes provided at positions facing each other
a is engaged.

The two-stage gear 18 is formed by integrally forming two gear portions formed concentrically, that is, an upper gear portion 18b and a lower gear portion 18a. The upper gear portion 18b of the two-stage gear 18
Are engaged with the spool gear 13a of the spool shaft 13 described above. Thus, the rotational driving force of the motor 3 is transmitted to the spool shaft 13 so that the spool shaft 13 can be rotated.

The rotational driving force of the motor 3 is not only transmitted to the spool shaft 13 as described above, but also for rotating other driving parts such as a film cartridge housed in the film cartridge chamber 1A. The driving force is also transmitted to a power transmission unit or the like including a plurality of gear trains including the driving shaft member. However, since these components are not directly related to the present invention, their illustration and detailed description are omitted.

When assembling a camera as a device to which the motor mounting device of the first embodiment having the above configuration is applied, the following procedure is performed. First, a film cartridge chamber 1A or the like in which a lens barrel unit 9, a finder unit 6, a flash light emitting unit 7, a flash circuit board 8, and the like are mounted on a predetermined position with respect to the film feeding unit 2, is provided with predetermined means. For example, the connection is made using a fastening means such as a screw.

Next, the cylindrical portion 2 of the film feeding unit 2
The motor 3 to which the two stepped screws 55 are attached in advance is attached to the upper part of a. In this case, first, the motor 3
The rotation shaft 3c and the pinion gear 3d are inserted through the center hole 51c of the leaf spring 51 into the center hole 2c of the cylindrical portion 2a. At the same time, the heads of the two stepped screws 55 are also connected to the cylindrical portion 2a through the two perforations 51b of the leaf spring 51.
Through the two perforations 2b.

In this state, the motor 3 is
While pressing downward (in the direction of arrow Y1 shown in FIG. 2) against the biasing force of the two spring portions 51a, the main body of the motor 3 is viewed clockwise as viewed from above (in the direction of arrow X shown in FIG. 2). To rotate. When the motor 3 is disposed at a position where one of the two spring portions 51a is locked by the first cutout 3f, the motor 3 is positioned at this position.
As a result, the rotation in the direction opposite to the arrow X direction in FIG. 2 is restricted. At the same time, since the urging force of the spring portion 51a also acts in the direction of the arrow X of the motor 3,
Unless a predetermined amount of force against the urging force of the spring portion 51a is applied, its rotation is restricted.

At this time, since the leaf spring 51 is sandwiched between the lower end surface of the motor 3 and the upper end surface of the cylindrical portion 2a, the motor 3 and the cylindrical portion are biased by the urging force of the spring portion 51a of the leaf spring 51. 2a is urged in a direction away from each other by a predetermined contact pressure.

That is, the leaf spring 51 is connected to the motor 3 and the cylindrical portion 2.
a in the state sandwiched between the leaf spring 51 and the spring portion 5 of the leaf spring 51.
1a is slightly contracted, and is biased by its own biasing force in a direction to separate the lower end surface of the motor 3 from the upper end surface of the cylindrical portion 2a. At this time, the length of the step portion of the stepped screw 55 is set slightly longer than the total size of the plate thickness of the upper end surface of the cylindrical portion 2a and the plate thickness of the leaf spring 51.

Therefore, in this state, the urging force of the leaf spring 51 is applied to the motor 3 in the direction along the rotating shaft 3c and in the direction of the arrow Y2 in FIG. Here, for example, when a force in the direction of arrow Y1 in FIG. 2 is applied to the motor 3, the motor 3 is fixed in a state where it can be slightly displaced in the same direction against the urging force of the spring portion 51a of the leaf spring 51. Will be done.

In such a state, the spool chamber 1B in which the spool shaft 13 is previously mounted is mounted from above the film feeding unit 2. At this time, the spool shaft 13
Is fitted to the outer peripheral portion of the second engaging portion 2e of the cylindrical portion 2a. As a result, the motor 3 is housed inside the spool shaft 13 and the spool chamber 1B is integrated with the film feeding unit 2. At this time, the second notch 3e of the motor 3 is locked by the locking claw at the tip of the arm 1g of the cylindrical wall 1c of the spool chamber 1B. This prevents the motor 3 itself from rotating, and the motor 3 is fixed so as not to rotate inside the spool shaft 13.

Further, at the same time, the spool gear 13 a of the spool shaft 13 is connected to the upper gear 1 of the two-stage gear 18.
8b and the pinion gear 3d of the motor 3
Mesh with the plurality of first planetary gears 14. As a result, the motor 3 is connected to the driving force transmission mechanism of the film feeding unit 2.

Then, on the upper surface side of the camera body 1,
The printed circuit board 4 (see FIGS. 1 and 4) is placed. In this case, the screw holes 4d and 4e of the printed circuit board 4
4f and the mounting bosses 1a, 1b, 1d
Each is fastened by a plurality of screws 5. In this way, the printed circuit board 4 is fixed to the camera body 1. In this case, the two terminals 3a and 3b of the motor 3 contact a predetermined contact (not shown) provided at a predetermined position on the lower surface side of the printed circuit board 4. As a result, the motor 3 and the printed circuit board 4 are electrically connected.

At this time, the motor 3 is urged in the direction of arrow Y2 in FIG. 2 by the urging force of the spring portion 51a of the leaf spring 51 as described above, but the printed circuit board 4 is mounted above the motor 3. Thus, the motor 3 is slightly pressed in the direction of the arrow Y1 in FIG. 2 while ensuring the contact between the two terminals 3a and 3b of the motor 3 and the printed circuit board 4. Therefore, the two terminals 3a
3b is in a state in which it comes into contact with a predetermined contact on the printed circuit board 4 side with a predetermined contact pressure. At the same time, the motor 3 is securely fixed between the printed board 4 and the leaf spring 51 and the cylindrical portion 2a of the film feeding unit 2. Thus, the assembling of the camera body 1 composed of various units is completed.

Finally, the front cover 11 is attached to the camera body 1 so as to cover the front cover 11 from the front side and the rear cover 12 from the back side. As a result, an exterior member for protecting the camera body 1 is formed, and the assembly of the camera is completed.

The operation of the driving force transmitting mechanism of the motor 3 and the film feeding unit 2 in the camera, which is an apparatus to which the motor mounting apparatus of the present embodiment thus configured is applied, will be briefly described as follows. become. First, a predetermined electric circuit (not shown) provided inside the camera body 1
On the other hand, when a predetermined control signal for driving the motor 3 is generated from a predetermined electric circuit in a state where power is supplied from the power supply battery 10, this signal is transmitted to the printed circuit board 4 and the two terminals 3a. It is transmitted to the motor 3 via 3b. In response to this, the rotation shaft 3c of the motor 3 starts rotating in a predetermined direction. Rotary shaft 3 at this time
With the rotation of c, the pinion gear 3d also starts to rotate in the same direction.

Then, the plurality of first planetary gears 14 meshed with the pinion gear 3d respectively start rotating. At the same time, these first planetary gears 14
Since each is engaged with the internal gear 2Aa of the cylindrical portion 2a, the first carrier 19 is rotated by revolving on its own. Thereby, the first carrier 19
The first sun gear 19a also rotates in the same direction, so that the plurality of second planetary gears 15 meshing with the first sun gear 19a start rotating. At the same time, since each of the second planetary gears 15 meshes with the internal gear 2Aa of the cylindrical portion 2a similarly to the first planetary gear 14, each of the second planetary gears 15 revolves to revolve the second carrier 16. Rotate. Thereby, the second sun gear 16a of the second carrier 16 also rotates in the same direction.

The rotational driving force of the second sun gear 16a is transmitted via the spur gear 17 to the lower gear portion 18a of the two-stage gear 18.
To the spool gear 13a of the spool shaft 13 meshing with the upper gear portion 18b of the two-stage gear 18. Thereby, the spool shaft 13 rotates in a predetermined direction. In this way, the rotational driving force of the motor 3 is transmitted to the spool shaft 13, and the film winding operation is performed.

As described above, according to the first embodiment, in order to attach the motor 3 to the film feeding unit 2, the rotation shaft 3 c of the motor 3 and the stepped screw 55 previously attached are attached to the film 3. Cylindrical part 2 of feeding unit 2
After passing through the predetermined holes (2c and 2b) on the side a, the operation is completed only by rotating the motor 3 in the direction along the guide hole 2d. Since there is no need to handle parts, it is possible to contribute to improvement in workability.

In this case, a leaf spring 51 for urging the motor 3 and the cylindrical portion 2a of the film feeding unit 2 in a direction for separating them is held between the motor 3 and the cylindrical portion 2a. It can be fixed more reliably.

Further, without adding any particular members,
The mounting of the motor 3 can be easily realized by a simple mechanism.
This is advantageous.

Note that in the above-described first embodiment,
The motor drop-off prevention means (rotation prevention means) is provided in the spool chamber 1
A pair of the arm portion 1g of the cylindrical wall portion 1c of B and the second notch 3e of the motor 3 and a pair of the spring portion 51a of the leaf spring 51 and the first notch 3f of the motor 3 are constituted. However, it is sufficient if there is only one pair.

Next, a second embodiment of the present invention will be described.
This will be described below. Also in the second embodiment, a case where the motor mounting device of the present invention is applied to a small camera will be described as an example, as in the first embodiment.

A camera as a device to which the motor mounting device of the present embodiment is applied has substantially the same configuration as that of the first embodiment described above, and includes a motor and a cylindrical portion of a film feeding unit. The only difference is the configuration in the vicinity of the connection portion with the base. Therefore, the same components as those in the above-described first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Only different configurations will be described below.

FIG. 5 is an enlarged exploded perspective view of a main part of a camera to which a motor mounting device according to a second embodiment of the present invention is applied, and shows a detailed configuration inside a film winding chamber (spool chamber) including a motor. It shows. FIG. 6 is an enlarged perspective view of an essential part showing only a motor of the present camera taken out and partially enlarged, showing a surface on which a rotating shaft is arranged, and partially omitted. is there. FIG. 7 is an essential part enlarged perspective view showing only a cylindrical portion (base portion) of the film feeding unit connected to the motor, and enlarging a part thereof. FIG. 8 is a developed view showing a part of a cylindrical portion (base) of the film feeding unit. FIG. 9 is an enlarged longitudinal sectional view of a main part showing the vicinity of a film winding chamber (spool chamber) of the present camera, and shows a cross section when viewed from the front side of the present camera.

When the motor 3 is mounted, a film feed unit 2 (described later) is mounted at a predetermined position on the outer peripheral edge of one end (lower side, lower end in FIG. 5) of the motor 3 used in the present camera. Convex portion 2h of cylindrical portion 2AA
(Displacement portion; see FIGS. 5 and 7) is engaged and locked to prevent rotation of the motor 3 itself and prevent the motor 3 from falling off. A plurality of first notches 3f (see FIGS. 5 and 6), which are portions, are formed at predetermined intervals (three are provided in the present embodiment). That is, the protrusion 2h of the cylindrical portion 2AA of the film feeding unit 2 and the first notch 3f constitute a motor drop prevention means.

On the other hand, the cylindrical portion 2 of the film feeding unit 2
The cylindrical portion 2a of the first embodiment described above is provided on the upper end surface of the AA.
Similarly, a center hole 2c is provided substantially at the center, and two holes 2b are formed at predetermined positions on a concentric circle centered on the center hole 2c. And these two perforations 2b
Guide hole 2 of a predetermined length extending in the direction along the circumference from
d are connected in series.

The outer peripheral edge of the upper end surface of the cylindrical portion 2AA has a predetermined interval so as to be at a position corresponding to the three first notches 3f of the motor 3 when the motor 3 is mounted. Thus, a plurality (three) of convex portions 2h are provided. The projection 2h has a substantially trapezoidal cross section as shown in FIGS. 7 and 8, and the contact surface 2 abuts against the inner wall surface 3i of the first cutout 3f.
i, and a slope 2j that is in contact with the upper inner wall surface 3j of the first cutout 3f.

In the vicinity of the positions where the three protrusions 2h are arranged, and at predetermined positions on the upper end face side, there are formed long holes 2k, respectively. In the vicinity where the convex portion 2h is disposed, the cylindrical portion 2
At a predetermined position on the outer peripheral surface of the AA, a long hole-shaped perforation 2g is provided.
Are drilled respectively.

That is, by forming these perforations 2g and 2k at predetermined positions of the cylindrical portion 2AA, the motor 3
When attaching to the upper end surface side of the cylindrical portion 2AA,
h and its vicinity can be slightly deformed, and the motor 3
In a state where the motor 3 is mounted at a predetermined position, the elastic force of the cylindrical portion 2AA itself returns the convex portion 2h and the deformed state in the vicinity thereof to the first position of the motor 3. The notch 3f is locked by the protrusion 2h.

As described above, in the present embodiment, the leaf spring 51 which is the spring member in the first embodiment is omitted. Accordingly, the cylindrical portion 2AA of the present embodiment is not provided with the small-diameter cylindrical projection 2f provided on the upper end surface of the cylindrical portion 2a of the first embodiment. Other configurations are exactly the same as those of the first embodiment.

The procedure for assembling a camera to which the motor mounting device of the present embodiment configured as described above is applied is as follows.
This is substantially the same as the above-described first embodiment. In the present embodiment, as described above, the leaf spring 51 in the first embodiment is eliminated. Therefore, when the motor 3 to which the two stepped screws 55 are attached in advance is mounted on the upper part of the cylindrical portion 2AA of the film feeding unit 2, the following is performed.

That is, the rotary shaft 3c and the pinion gear 3d of the motor 3 are inserted through the center hole 2c of the cylindrical portion 2a, and at the same time, the heads of the two stepped screws 55 are inserted into the two holes 2b of the cylindrical portion 2a. Insert it.

In this state, the motor 3 is moved downward (FIG. 5).
While pressing in the direction of arrow Y1 shown in FIG. 5, the main body of the motor 3 is viewed clockwise as seen from above (direction of arrow X shown in FIG. 5).
To rotate. At this time, the convex portion 2h of the cylindrical portion 2AA is deformed by being provided with the perforations 2g and 2k and is pushed slightly downward.

When the three convex portions 2h enter the three first notches 3f, respectively, the slope 2j of the convex portions becomes the first notch 3f.
A state in which it can slide along the upper inner wall surface 3j of the notch 3f is obtained. When the motor 3 is rotated in this state, the contact surface 2i of the projection 2h comes into contact with the inner wall surface 3i of the first cutout 3f. The motor 3 is positioned at this position by the arrow X in FIG.
Rotation in the direction opposite to the direction is restricted.

At this time, since the convex portion 2h is interposed between the lower end surface of the motor 3 and the upper end surface of the cylindrical portion 2a,
The motor 3 and the cylindrical portion 2a are urged in a direction in which the motor 3 and the cylindrical portion 2a are separated from each other by a predetermined contact pressure by the return force of the protrusion 2h (the urging force in the direction of the arrow Y2 in FIG. 5).

That is, in a state where the motor 3 is mounted on the cylindrical portion 2a and arranged at predetermined positions, the convex portion 2
h is pressed slightly downward so that a restoring force is always applied. Therefore, the state in which the lower end surface of the motor 3 is urged in the direction of separating from the upper end surface of the cylindrical portion 2a by the return force of the convex portion 2h is maintained.

At this time, the length of the step portion of the stepped screw 55 is set to be slightly longer than the sum of the thickness of the upper end surface of the cylindrical portion 2a and the thickness in the height direction of the projection 2h. I have. Accordingly, in this state, the returning force of the convex portion 2h is applied to the motor 3 in the direction along the rotation axis 3c and in the direction of the arrow Y2 in FIG. When a force in the direction of arrow Y1 in FIG. 2 is applied to the motor 3, the motor 3 is fixed in a state in which the motor 3 can slightly move in the same direction against the restoring force of the projection 2h. For other assembling procedures, refer to the first
This is exactly the same as the embodiment. Further, the operation of the driving force transmitting mechanism of the motor 3 and the film feeding unit 2 in the present embodiment is exactly the same as in the above-described first embodiment.

As described above, according to the second embodiment, the same effects as those of the first embodiment can be obtained, and the spring member (leaf spring 51) in the first embodiment can be used. Discarded, cylindrical part 2 of film feeding unit 2
Since the AA is configured to have the same function as the spring member (leaf spring 51) in the above-described first embodiment, the number of components can be easily reduced. Therefore, it is possible to contribute to further simplifying the assembling process and reducing the manufacturing cost.

[Supplementary Note] According to the above-described embodiment, an invention having the following configuration can be obtained.

(1) A motor, a concave portion provided on an end face of the motor, a base to which the motor is attached,
A deformable displacement portion provided on the base portion and having a convex portion fitted into the concave portion, a locking member for fixing the motor to the base portion, and a locking member provided on the base portion, wherein the locking member is engaged. A motor mounting device comprising:

(2) a motor having a concave portion or a convex portion provided on an end face, and a deformable displacement portion having a convex portion or a concave portion fitted into the concave portion or the convex portion;
A motor mounting device, comprising: a base on which the motor is mounted; and a locking portion provided on the motor for fixing the motor to the base.

(3) A motor having a concave portion or a convex portion, a deformable displacement portion having a convex portion or a concave portion fitted into the concave portion or the convex portion, and a base to which the motor is attached; A motor mounting device, comprising: a locking portion provided for fixing the motor to the base portion; and an engaging portion provided on the base portion and engaging with the locking portion.

(4) In the motor mounting device according to Supplementary Note 2 or 3, the concave portion or the convex portion is provided on an end face of the motor.

(5) In the motor mounting device according to Supplementary Note 1, 2, or 3, the locking portion is a stepped screw, and the engaging portion is an arc-shaped hole.

(6) A motor having a motor for supplying a driving force for driving equipment and a fixed member to which the motor is mounted, wherein the motor is mounted by rotating the motor with respect to the fixed member. Mounting device.

(7) In the motor mounting device according to appendix 6, the motor mounting device is sandwiched between the motor and the fixing member.
A spring member for urging the motor and the fixing member to separate from each other is further provided.

(8) In the motor mounting device according to attachment 7, the fixing member includes a motor drop-off preventing means for preventing the mounted motor from falling off.

(9) The motor mounting device according to attachment 7 or 8, further comprising a second fixing member different from the fixing member, wherein the motor is fixed by the fixing member and the second fixing member. The second fixing member is provided with a second motor falling-off preventing means for preventing the motor from falling off.

[0105]

As described above, according to the present invention, it is possible to improve the working efficiency with a simple structure while adopting a general-purpose motor having general versatility in a small device having a motor or the like. It is possible to provide a motor mounting device that contributes and can ensure extremely good productivity.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view schematically showing a device to which a motor mounting device according to a first embodiment of the present invention is applied.

FIG. 2 is an enlarged exploded perspective view of a main part showing a detailed configuration inside a film winding chamber (spool chamber) including a motor in the camera of FIG.

FIG. 3 is an enlarged perspective view of a main part showing only a motor of the camera shown in FIG.

4 is a film winding chamber (spool chamber) of the camera of FIG.
The principal part enlarged longitudinal cross-sectional view which shows the vicinity.

FIG. 5 is an enlarged exploded perspective view of a main part showing a detailed configuration inside a film winding chamber (spool chamber) including a motor in a camera to which a motor mounting device according to a second embodiment of the present invention is applied.

FIG. 6 is an enlarged perspective view of a main part showing only the motor shown in FIG. 5 and enlarging a part thereof;

7 is an enlarged perspective view of a main part of the film feeding unit connected to the motor shown in FIG. 6, in which only a cylindrical part (base part) is taken out and a part is enlarged.

FIG. 8 is a development view showing a part of a cylindrical portion (base) of the film feeding unit shown in FIG.

FIG. 9 is an enlarged longitudinal sectional view of a main part showing the vicinity of a film winding chamber (spool chamber) shown in FIG. 5;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Camera main body (device main body) 1A ... Film cartridge chamber 1B ... Spool chamber 1c ... Cylindrical wall part 1g ... Arm part (2nd motor falling-off prevention means, 2nd motor rotation prevention means) 2. ... Film feeding unit 2a, 2AA ... Cylindrical part (fixing member, base) 2b ... Perforation (engaging part) 2c ... Center perforation 2d ... Guide hole (engaging part) 2e ... Second engaging part 2f ... Small-diameter cylindrical projections 2g and 2k... Perforations 2h... Projections (displacements) 2i... Contact surfaces 2j... Slopes 3... Motors 3e. Means, second
3f... First notch (concave portion; motor drop-off preventing means, motor rotation preventing means) 3i... Inner wall surface 3j... Upper inner wall surface 6... Finder unit 7. ... Flash circuit board 9 ... Lens barrel unit 10 ... Power battery 11 ... Front cover 12 ... Rear cover 13 ... Spool shaft (winding spool shaft) 13a ... Spool gear 51 ... Leaf spring (spring) 51a ... Perforation (spring member) 51c ... Center perforation (spring member) 51d ... Guide hole (spring member) 51e ... Small through hole (Spring member) 55 Stepped screw (locking member, locking portion)

Claims (3)

[Claims] 1. A motor having a concave portion on an end face, a deformable displacement portion having a convex portion fitted into the concave portion, a base portion to which the motor is attached, and a motor provided on the motor, wherein the motor is mounted on the base portion. A motor mounting device comprising: a locking portion for fixing; and an engaging portion provided on the base portion and engaged with the locking portion. 2. The motor mounting device according to claim 1, wherein the protrusion is provided on an end face of the motor, and the recess is provided on an end face of the base. 3. The motor according to claim 1, wherein the engaging portion comprises a stepped screw, and the engaging portion comprises an arc-shaped hole provided on an end face of the base. Mounting device.