JP2002062571A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance space efficiency by housing electric parts such as a coil member in a spool while completely insulating a motor in the spool. SOLUTION: The coil member 1 is housed in the housing part 2a of a holding member 2 and inserted inside the spool 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera in which a motor for feeding a photographic film is housed in a film take-up spool.

[0002]

2. Description of the Related Art At present, a camera which uses a motor to automatically wind up and rewind a photographic film is mainly used, and its feed motor is generally housed inside a hollow spool. It is. Of course, the camera is equipped with not only this feed motor but also other electric components, that is, circuits for photometry, distance measurement, strobe light emission, etc., and an overall control circuit.

[0003] In particular, the strobe circuit has a high-voltage and large-current portion, and the electric components constituting the circuit must be of a large size. In particular, the coil member used for boosting is very large among electric components used for a camera.

FIG. 4 is a cross-sectional view showing a configuration near a motor of a camera proposed in Japanese Patent Application Laid-Open No. 8-62491. An oscillation transformer 31 for charging a capacitor 39 for storing strobe light emission energy with a voltage of several hundred volts is mounted on a circuit board 37, and a part thereof is accommodated in a spool 34. 35 is a feeding motor.

FIG. 5 is a perspective view showing the internal structure of a general compact camera. The strobe light emitting section 48 and the strobe circuit board 47 are both located above the spool 44 and are attached to the main body member 43 by a method not shown. 41 is a trigger coil mounted on the strobe circuit board.

[0006]

However, the above-mentioned prior art has the following disadvantages.

According to the conventional example shown in FIG. 4, the oscillation transformer 31 is mounted directly on the circuit board 37 and is housed directly in the spool 34. Is secured by the gap. For this reason,
Depending on the degree of soldering of a lead wire (not shown) to the motor 35, a trouble such as a short circuit may occur. In addition, when a coil member having a voltage of several kV is accommodated, even if a coil member is accommodated, Even if it is not done, there is a risk of sparking, so the gap must be further widened, resulting in poor space efficiency. In addition, since the upper end of the motor 35 is not held, vibration and noise are caused if the strength of attachment to a ground plate (not shown) below is insufficient.

On the other hand, according to the conventional example shown in FIG. 5, both the strobe light emitting section 48 and the strobe circuit board 47 are connected to the main body member 4.
3, the main body member 43 is a so-called skeleton of the camera, and has a complicated shape due to various requirements.
Conversely, the strobe light emitting section 48 and the strobe circuit board 43 are not always mounted in an ideal form because they are not easily formed into an arbitrary shape, and strength may be sacrificed or the structure may be complicated. Since the strobe circuit board 47 including the trigger coil 41 is located above the spool 44, the required space increases. Also,
The gap between the spool 44 and the main body member 43 is
In order to prevent light from leaking to the vicinity, light must be shielded in some way.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to improve the space efficiency by accommodating an electric component such as a coil member in a spool while sufficiently insulating the motor in the spool.

[0010]

In order to achieve this object, a camera according to the present invention has a hollow cylindrical film take-up spool, and a motor housed in the spool and driving the spool. At least a part of the electric component housed in the insulating electric component housing member is disposed in the spool. Accordingly, the space efficiency of the camera is improved by accommodating at least a part of the electric components in the spool, and the insulation between the electric components and the motor in the spool can be sufficiently maintained.

A hole is formed in a wall portion of the spool housing member that houses the spool, the wall portion facing one end of the spool, and the electric component housed in the electric component housing member is spooled through the hole. It is preferable that the electrical component housing member is fixed to the outer surface side of the wall surface portion. Thus, the electric component housing member can be easily attached to the wall surface of the spool housing member.

Further, the motor is fixedly held on the motor base plate member at the other end of the spool, and is fixedly held on the electric component accommodating member at one end of the spool. Vibration and noise can be effectively reduced.

[0013] Further, since the electric component accommodating member is formed so as to close the hole of the spool accommodating member when attached to the spool accommodating member, light can be shielded near the spool.

Further, since the hole portion rotatably supports one end portion of the spool, the spool can rotate about the rotation shaft.

Further, since the strobe base plate member for supporting the strobe unit is sandwiched at the connecting portion between the electric component housing member and the wall surface of the spool housing portion, the mounting structure of the strobe base plate member can be simplified. it can.

Further, since the electric component housing member fixedly holds the board connected to the electric component, the mounting structure of the board on which the electric component is mounted can be simplified.

Further, since the electric component is a trigger coil, the space of the strobe device can be reduced.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS (First Embodiment) FIGS. 1A and 1B are views showing a configuration around a spool of a camera according to a first embodiment of the present invention, wherein FIG. 1A is an assembled state, and FIG. FIG. 3C is a vertical cross-sectional view of FIG.

1 is a coil member (electric component), 2 is a holding member (electric component accommodating member), 3 is a main body member (spool accommodating member), 4 is a spool, 5 is a motor, and 6 is a motor base plate member.

The coil member 1 is a trigger coil for generating a trigger voltage (several kV) for strobe light emission. The trigger voltage is generated at the high voltage terminal 1a. The holding member 2 accommodates the coil member 1 in the accommodating portion 2a such that the high-voltage terminal 1a is located at the back, and the base 2b is fixed to the main body member 3. At this time, a lead wire (not shown) connected to the high-voltage terminal 1a is connected to an escape groove 2c
Guided up through.

The spool 4 is provided in the spool chamber 3 of the main body member 3.
The output of the motor 5 is transmitted and rotated to wind the photographic film. Spool 4
Has a hollow structure.

The motor 5 is fixed to a motor base plate member 6 mounted below the spool chamber 3a, and is then housed inside the hollow spool 4. At this time, the lead wire (not shown) connected to the terminal of the motor 5 is led upward through the clearance groove 2d formed on the outer wall surface of the housing. The output of the motor 5 is transmitted to a power transmission system (not shown) such as a gear attached to the motor base plate member 6.

The holding member 2 is inserted into the spool 4 while accommodating the coil member 1 in the accommodating portion 2a in the assembled state. Therefore, the high voltage terminal 1a is located in the back of the accommodating portion 2a of the holding member 2, so that not only is it completely insulated from the motor 5, but also a creepage distance sufficient to prevent sparking is secured.

Further, since the base 2b of the holding member 2 is attached so as to substantially cover the gap between the spool 4 and the main body member 3, light entering the spool chamber 3a from this gap can be blocked. Of course, since a part of the coil member 1 is housed inside the spool 4,
Since the space for accommodating the camera is unnecessary, the space efficiency of the entire camera is improved.

(Second Embodiment) FIG. 2 is similar to FIG.
It is a figure showing composition of a spool circumference of a camera which is a 2nd embodiment. In the second embodiment, a strobe circuit board (flexible printed board) is added to the configuration of the first embodiment.

The strobe circuit board 17 has a positioning hole 17
a has a positioning pin 12 on a base 12b of the holding member 12.
e and a locking portion 12f are provided, respectively, and the holding member 12 holds the strobe circuit board 17 using these.

Therefore, in addition to the same effects as in the first embodiment, the strobe circuit board 17 on which the coil member 11 is mounted is provided.
Mounting structure can be simplified. Further, since the coil member 11 is housed inside the spool 14, the space for the strobe circuit board 17 is small.

(Third Embodiment) FIG. 3 is similar to FIG.
It is a figure showing composition of a spool circumference of a camera which is a 3rd embodiment. In the second embodiment, a stroboscopic base plate member 28 is added to the configuration of the first embodiment.

Holding member 22 and strobing base plate member 28
Are provided with positioning holes 22g and 28a, respectively, while the main body member 23 is provided with positioning pins 23c, which are used to position the flash base plate member 28 with respect to the main body member 23, and then the holding member 22 is performed. Here, if the holding member 22 is fixed to the main body member 23, the stroboscopic base plate member 28 supporting the strobe unit 29 is sandwiched between the holding member 22 and the main body member 23.

Further, a cylindrical motor holding portion 22h is provided on the lower surface of the accommodation portion of the holding member 22, and enters the spool chamber with the holding member 22 being attached to the main body member 23, and is mounted. Then, the protrusion (terminal) 25a on the upper part of the motor 25 is substantially held. As a result, the motor 25 is in a substantially double-supported state. Therefore, even if the strength of the motor base plate member 26 is not sufficiently obtained, vibration and noise are less likely to occur.

Therefore, in addition to the same effects as those of the first conventional example, the mounting structure of the flash base plate member 28 can be simplified. Further, vibration and noise of the motor in the spool can be reduced.

[0032]

As is apparent from the above description, according to the camera of the present invention, there is provided a hollow cylindrical film take-up spool, and a motor housed in the spool and driving the spool. Since at least a part of the electric components accommodated in the insulating electric component accommodating member is arranged in the spool, the space efficiency of the camera is improved by accommodating at least a part of the electric components in the spool, and the spool is provided. Inside, insulation between the electric components and the motor can be sufficiently maintained.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a configuration around a spool of a camera according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration around a spool of a camera according to a second embodiment of the present invention.

FIG. 3 is a diagram showing a configuration around a spool of a camera according to a third embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a configuration near a motor of a conventional camera.

FIG. 5 is a perspective view showing an internal configuration of a conventional general compact camera.

[Explanation of symbols]

 1, 11, 21: Coil member 1a: High voltage terminal 2, 12, 22: Holding member 2a: Housing portion 2b, 12b: Base portion 2c, 2d: Escape portion 3, 13, 23: Main body member 3a: Spool chamber 4, 14 , 24: spool 5, 15: motor 6, 16, 26: motor base plate member 12e, 23c: positioning pin 12f: locking portion 17: strobe circuit board 17a, 22g, 28a: positioning hole 22h: motor holding portion 25: convex Part 28: Strobe base plate member 29: Strobe unit

Claims (8)

[Claims] 1. A hollow cylindrical film take-up spool, and a motor housed in the spool and driving the spool, wherein at least a part of the electric components housed in the insulating electric component housing member is provided. A camera disposed in the spool. 2. A hole is formed in a wall portion of a spool housing member that houses the spool, the wall portion facing one end of the spool, and the electric component housed in the electric component housing member is provided with the hole. The camera according to claim 1, wherein the spool is housed in the one end of the spool via an air outlet, and the electric component housing member is fixed to an outer surface of the wall. 3. The motor according to claim 1, wherein the motor is fixedly held on a motor base plate member on the other end side of the spool, and is substantially held on the electric component housing member on the one end side of the spool. The camera according to claim 2, wherein 4. The camera according to claim 2, wherein the electric component housing member is formed in a shape that closes the hole of the spool housing member when attached to the spool housing member. . 5. The camera according to claim 2, wherein the hole portion rotatably supports the one end portion of the spool. 6. The camera according to claim 2, wherein a strobe base plate member for supporting a strobe unit is held at a connection portion between the electric component housing member and the wall portion of the spool housing portion. . 7. The camera according to claim 1, wherein the electric component housing member fixedly holds a board connected to the electric component. 8. The camera according to claim 1, wherein the electric component is a trigger coil.