JPH06337461A - Film camera - Google Patents

Abstract

(57) [Summary] [Object] To provide a film winding / rewinding device for a camera, which is suitable for making the camera compact. [Structure] Rewinding motor 5 and winding motor 10
Then, when the winding motor 5 rotates in the winding direction, the rewinding motor 10 is rotationally driven so that the film 3 cooperates in the winding direction and is fed, and the rewinding motor 1
The control circuit 15 drives the winding motor 5 to rotate so that the film 3 cooperates in the rewinding direction when 0 is rotated in the rewinding direction.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to improvements in film cameras.

[0002]

2. Description of the Related Art Conventionally, as a film winding / rewinding device of a film camera, there is known a film winding / rewinding device which switches between winding and rewinding by switching a clutch with a single motor.

[0003]

However, since the film winding / rewinding device of the conventional film camera has a structure for winding and rewinding by one motor, a large and powerful motor is required. However, there is a problem that it is difficult to make the camera compact.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a film camera suitable for achieving compactness.

[0005]

In order to solve the above problems, the present invention cooperates with a rewinding motor, a winding motor, and a film in the winding direction when the winding motor rotates in the winding direction. Control for rotatively driving the rewinding motor so as to feed the film, and rotationally driving the rewinding motor for cooperatively feeding the film in the rewinding direction when the rewinding motor rotates in the rewinding direction. And a circuit.

[0006]

According to the present invention, when the film is wound up,
When the winding motor is rotated in the winding direction, the control circuit rotationally drives the rewinding motor to cooperate to feed the film in the winding direction. When the rewinding motor is rotated in the rewinding direction when rewinding the film, the control circuit rotationally drives the winding motor so that the film is fed in the rewinding direction.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, reference numeral 1 is a film cartridge,
Reference numeral 2 is a rewinding shaft, 3 is a film, 4 is a take-up spool, 3a is a perforation, and 4a is an engaging projection that engages with the perforation 3a. A rewinding motor 5 is installed near the rewinding shaft 2 and its output shaft 5a
A gear 6 is fixed to the. This gear 6 is gear 7,
It is rotatably connected to the rewinding shaft 2 via 8 and 9. The gears 6 to 9 form a reduction gear train. The gears 7 and 8 are integrally configured and rotatably supported by a camera body (not shown). The gear 9 is fixed to the rewinding shaft 2, and the rewinding shaft 2 is rotatably supported by the camera body.

A winding motor 10 is provided inside the winding spool 4. The winding motor 10 is fixed to the camera body. This winding motor 10
A gear 11 is fixed to the output shaft 10a. Gear 1
1 is rotatably connected to the take-up spool 4 via a gear 12, a gear 13, and a gear 14. The gears 11 to 14 form a reduction gear train. The gear 12 and the gear 13 are rotatably supported by the camera body. The gear 14 is fixed to the take-up spool 4. The take-up spool 4 is rotatably supported by the camera body.

Rewinding motor 5 and winding motor 1
0 is controlled by the control circuit 15. Control circuit 15
At the time of winding, the winding motor 10 is rotated in the winding direction (direction of arrow C1) and the film 3
The rewinding motor 5 is rotated in the winding direction (arrow C1 direction) so as to cooperate with the winding direction. Further, the control circuit 15 rotates the rewinding motor 10 in the rewinding direction (arrow C2 direction) at the time of rewinding, and also winds the film 3 in cooperation with the rewinding direction (arrow C2 direction). The motor 10 is rotated.

At this time, in order to apply a slight tension to the film 3, the winding motor 10 is used at the time of winding.
The film feeding speed by the rewinding motor 5 is controlled to be slightly slower than the film feeding speed by the, and at the time of rewinding, the film feeding speed by the winding motor 10 is controlled to be slightly slower than the film feeding speed by the rewinding motor 5. Is desirable.

[0012]

Since the film camera according to the present invention is constructed as described above, the clutch mechanism for switching can be eliminated and a small motor can be used, so that the whole camera can be miniaturized. be able to.

In the embodiment, since the winding motor 10 is provided inside the take-up spool 4, even if two winding motors are provided, the occupied space does not increase.

[Brief description of drawings]

FIG. 1 is a diagram showing a main configuration of a film camera according to the present invention.

[Explanation of symbols]

 3 ... Film 4 ... Winding spool 5 ... Rewinding motor 10 ... Winding motor 10 15 ... Control circuit

Claims (1)

[Claims] 1. A rewinding motor and a rewinding motor, and when the rewinding motor rotates in the winding direction, the rewinding motor is rotated so as to cooperatively feed a film in the winding direction, and the rewinding is performed. And a control circuit for rotating the winding motor so that the film cooperates in the rewinding direction when the winding motor rotates in the rewinding direction.