JPH0423227Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Technical Field of the Invention) The present invention relates to a film winding device for a camera.

(Background of the invention) Conventionally, film winding devices for cameras were
For example, there is one shown in FIG. The film winding device for a camera shown in FIG. The film guide member 5 is provided with a film guide member 5 extending across the outer peripheral surface of the small diameter cylindrical portion 4b between the sprocket gears 4a formed in At the same time, the leader portion 2a is configured to be reliably guided toward the outer peripheral surface 3a of the spool 3.

However, in the conventional camera film winding device described above, the sprocket 4 has the function of feeding the film 2 by engaging its sprocket gear 4a with the perforation of the film 2. The space between the outer peripheral surface of the portion 4b and the film 2 is very narrow, and a thin plate must be used as the film guide member 5, and the film guide member 5 must be supported in a cantilevered manner. If there are large variations in the position of the free end 5b of the film guide member 5 due to installation errors and the free end 5b hits the emulsion surface of the film 2, the film 2
There was a problem that there was a risk of scratches on the surface.

(Purpose of the invention) The present invention has been made by focusing on these conventional problems, and improves the mounting accuracy of the film guide member and prevents the free end of the film guide member from scratching the film surface. It is an object of the present invention to provide a film winding device for a camera that does not cause the film to wind up.

(Summary of the invention) The gist of the invention to achieve this purpose is as follows:
A film winding device for a camera comprising a film guide member whose one end is supported by the camera body and whose free end extends across the outer circumference of a sprocket to guide a leader portion of the film toward the outer circumferential surface of the spool. A film for a camera, characterized in that a part of the film guide member is bent to a side opposite to the film guide surface to form a bent part, and the tip of the bent part is brought into contact with the camera body. Located in the winding device.

In the film winding device for the camera, since the tip of the bent portion is brought into contact with the camera body, the film guide member can be reliably positioned, and the free end of the film guide member It is designed so that it does not hit the film surface.

(Example) Hereinafter, an example of the present invention will be described based on the drawings. Note that the same parts as in the above-mentioned conventional example are given the same reference numerals.

1 and 2 show an embodiment of the present invention, and FIG. 2 is a perspective view of the camera shown in FIG. 1 when the back cover is opened and the camera is viewed from the outside.

In this embodiment, the film winding device for a camera according to the present invention is applied to an easy loading device for a camera.

The camera easy loading device shown in FIGS. 1 and 2 includes a film guide member 5 that is cantilevered at one end 5a on the camera body 1, and a pressing roller 6a that presses the film 2 against the outer peripheral surface 3a of the spool 3. , 7a at their tips.

One end 5a of the film guide member 5 is screwed to the camera body 1 near the ends of inner rails 12, 12 that extend along the film opening 11 and guide the film 2, and the free end 5b of the film guide member 5 are sprocket gears 4a formed on both sides of the sprocket 4 to guide the leader portion 2a of the film 2 toward the outer peripheral surface 3a of the spool 3;
4a, and extends toward the outer circumferential surface 3a of the spool 3.

The film guide member 5 has a bent portion 51 which is partially bent to the side opposite to the film guide surface 5c.
is formed, and the tip 51a of the cut and bent portion 51
is in contact with the locking portion 13 of the camera body 1.

The cut and bent portion 51 is cut and bent such that the shape of the opening 52 through which the cut and bent portion 51 passes is in the shape of an arrow pointing in the direction in which the film 2 is fed.

Further, the film guide member 5 itself has a tip 51a of the cut and bent portion 51 connected to the locking portion 13 of the camera body 1.
It is elastically deformed so as to be biased and brought into contact with.

The base 6b of the guide plate 6 is pivotally supported by a pivot 14 of the camera body 1, and the guide plate 6 is biased counterclockwise by a spring member 15.

Similarly, the base 7b of the guide plate 7 is supported by a pivot 16 fixed to the camera body 1, and the guide plate 7 is biased counterclockwise by a spring member 17.

Furthermore, in the figure, reference numeral 10 is a back cover pivotably supported on the camera body 1 so as to be openable and closable.

In the camera easy loading device having the above configuration, a film cartridge (not shown) is used.
The film 2 is loaded into the cartridge chamber (not shown) of the camera body 1, and the film 2 is pulled out from the cartridge.
is placed on the inner rail 11, the leader portion 2a of the film 2 is placed on the film guide surface 5c of the film guide member 5, and the perforation near the leader portion 2a is connected to the sprocket gears 4a, 4a of the sprocket 4. When the back cover 10 is closed and the film 2 is wound up in this state, the leader part 2a of the film 2 is guided toward the outer peripheral surface 3a of the spool 3 by the film guide member 5, and the leader part 2a is pressed. It is wound around the outer circumferential surface 3a of the spool 3 while being pressed by the rollers 6a and 7a (FIG. 1 shows a state in which one turn of the leader portion 2a is wound around the outer circumferential surface 3a of the spool 3).

According to the above embodiment, when the one end 5a of the film guide member 5 is screwed to the camera body 1, the tip 51a of the cut and bent portion 51 comes into contact with the locking portion 13 of the camera body 1, so that the film guide member 5
The free end 5b of the free end 5b is prevented from wobbling.
There is no risk that b will hit the emulsion side of the film 2 and scratch the surface of the film 2.

Further, in the above embodiment, the film guide member 5
Due to its own elastic force, the tip 51a of the cut and bent portion 51
Since the free end 5 of the film guide member 5 is biased and brought into contact with the locking portion 13 of the camera body 1, even if some external force is applied to the film guide member 5, the free end 5 of the film guide member 5
b is difficult to deform toward the film 2 side.

Further, the camera film winding device according to the present invention is not limited to the camera easy loading device shown in the above embodiment.

(Effect of the invention) According to the film winding device for a camera according to the invention, a part of the film guide member is bent on the opposite side to the film guide surface to form a bent part, and the tip of the bent part is Since the film guide member is brought into contact with the camera body, the film guide member can be positioned reliably, and the mounting accuracy of the film guide member can be improved. Therefore, the free end of the film guide member can be prevented from scratching the film surface. I never put it on.

[Brief explanation of drawings]

Figures 1 and 2 show an embodiment of the present invention. Figure 1 is a cross-sectional view of the camera showing the main parts, and Figure 2 is a cross-sectional view of the camera shown in Figure 1 with the camera back opened. FIG. 3 is a perspective view and a cross-sectional view of a conventional camera. 1...Camera body, 2...Film, 2a...
Leader part, 3... Spool, 3a... Outer circumferential surface of spool, 4... Sprocket, 5... Film guide member, 5a... One end of film guide member, 5b... Free end of film guide member, 5c
...Film guide surface of film guide member, 1...
...Bent part (bent part), 1a... Tip of the cut part (tip of the bent part).

Claims (1)

[Claims for Utility Model Registration] (1) One end supported by the camera body and the film leader portion cover the outer periphery of the sprocket to be guided toward the outer periphery of the film take-up spool and move toward the take-up spool. In a film winding device for a camera equipped with a film guide member having an extended free end, a part of the film guide member is cut off from the film guide member without cutting off the other part from the film guide member, and the separated part is cut off from the film guide member. A bent portion is formed by bending the portion toward the sprocket, and the film guide member is biased by the elastic force of the film guide member itself so that the tip of the bent portion separated from the film guide member comes into contact with the camera body. and that the shape of the bent portion is selected such that the shape of the opening formed in the film guide member after the bent portion is bent toward the sprocket side is a shape that indicates the film feeding direction. Features: Camera film winding device. (2) The film winding device according to claim 1, wherein the opening is in the shape of an arrow.