JPS63271328A - Camera - Google Patents

Abstract

PURPOSE:To miniaturize a camera body by directly connecting the center shaft of a winding knob to a spool of a film container loaded into a winding room through a through hole formed on the upper face of the camera body, and arranging a light shielding means between the through hole and the winding knob. CONSTITUTION:Prior to combining the camera body, a 1st film container 12 storing a 35mm film is loaded to a rewinding room (b) and a 2nd empty film container 13 capable of winding up the film is built in a winding room (c). In such a case, the shaft part 16a of a winding knob 16 is previously and directly connected to the spool 14 of the 2nd film container 13, and when the camera body 11 is combined, the head part 16b of the winding knob 16 is exposed to the outside of the camera body 11 through the through hole 19 formed on a dividing line of an upper face. On the other hand, the light shielding means 20 for the camera body 11 and the winding knob 16 forms a light maze by raising circular ribs 21, 22 around the through hole 19 formed on the upper face of the camera body 11, and forming recessed grooves 23, 24 to be engaged with the circular ribs 21, 22 like nests on the lower face of the winding knob 16. Thus, the camera body can be miniaturized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to cameras, such as disposable cameras, which are loaded with film by the manufacturer.

[Background of the invention]

Generally, this type of camera uses a film cartridge containing 110 type or 126 type film. This is to make the camera body more compact, but since the area of one frame of this type of film is small, the full size screen of 351 film (24 x 3
When comparing the image photographed in step 6) with the printed image after enlarging, it was inevitable that the image would be inferior in terms of sharpness, graininess, etc. For this reason, there has been a desire for a simple camera that can use 35m film (roll film J135 (JrSK 7519) stored in a dedicated Nohatrone (JISK 7528) in a light-tight manner).

However, since such a simple camera and format must be equipped with the minimum mechanism necessary for taking photographs,
The external appearance of the camera body itself is similar to that of a normal film interchangeable camera, and therefore, as long as a cartridge containing 35 mm film is used, there is a limit to miniaturization. That is, in order to use a cartridge containing 351 film in this type of camera, the cartridge must be loaded into the film storage chamber, and a light-tight empty film container (an empty cartridge may also be used) that can store the same film must be loaded into the winding chamber. It is necessary to load the photographed film into the empty film container in the winding chamber and wind the photographed film into the empty film container in the winding chamber, so that when the camera is finally broken, the photographed film can be taken out along with the film container and processed for development. However, as long as such a film container is used, a winding mechanism for the film container loaded in the winding chamber is required, and this winding mechanism requires a large installation space, and the installation space is taken up by the camera body. This caused the vertical dimension to increase.

[Purpose of the invention]

In view of the above-mentioned points, this invention is a novel camera body that uses a cartridge containing 351 film and can be made smaller by omitting the installation space for the coupling mechanism between the spool of the film container and the winding knob. The aim is to provide a camera that

[Structure of the invention]

In order to achieve the above object, the present invention directly connects the central axis of a winding knob to the spool of a film container loaded in a winding chamber in a camera body through a through hole provided on the top surface of the camera body, and By providing a light shielding means between the hole and the winding knob, the spool of the film container and the winding knob can be directly connected while maintaining light shielding performance.

〔Example〕

Next, the present invention will be described based on embodiments shown in the accompanying drawings.

11 is a camera body, and the camera body 11 is a front frame body 11.
A and a back frame 11b are independently molded and combined, and inside thereof there is provided an exposure chamber a, and a winding chamber C with the exposure chamber a sandwiched therebetween. Before assembling the camera body 11, the first film container 12 containing 3511 films is loaded into the rewind chamber, and
An empty second film container 13 in which the same film can be wound is installed in the winding chamber C. In this case, the drawn end of the film 15 drawn out from the first film container 12 is connected to the spool 14 in the second film container 13 in advance and wound therein. Further, the shaft portion 16a of the winding knob 16 is directly connected to the spool 14 of the second film container 13, and the camera body 11
When combining the camera body 1, the head 16b of the winding knob 16 is inserted through the through hole 19 provided on the dividing line on the top surface of the camera body 1.
1 to be exposed to the outside.

The first and second film containers 12 and 13 are each of a light-tight structure, and a film-filled cartridge or an empty cartridge of the same shape may be used as is. In this case, the film in the cartridge containing film is pulled out to the maximum limit in a dark room or in a light-tight device, and its entire length is wound in an unexposed state in an empty cartridge, so that the side of the wound cartridge is exposed to the first film. It is preferable to use it as the container 12 and use the empty cartridge side as the second film container 13. That is, it is preferable that the inner end of the film cartridge used as the first film container 12 is not fixed to the core (spool) so that the entire film can be transferred into the empty cartridge during winding. It is from.

Although not clearly shown in the drawings, it goes without saying that the first film container 12 and the second film container 13 may be integrally molded as a cartridge.

When the shaft portion 16a of the winding knob 16 is directly connected to the spool 14 of the second film container 13 through a through hole 19 provided on the upper surface of the camera body 11, the outer periphery of the lower end portion of the shaft portion 16a of the winding knob 16 The spool 14 is attached to the surface.
Ribs 17 are provided in the axial direction that can engage with protrusions 14a and 14b provided oppositely on the inner circumferential surface of the rotor, and just by inserting the ribs 17, the ribs 17 engage as shown in Figure 5 to prevent slipping in the rotational direction. ing. Further, a ratchet gear (the ratchet pawl is not shown) 18 for preventing reverse winding is fixed to the shaft portion 16a of the winding knob 16 so as not to slip in the rotational direction.

Note that there are two possible methods for directly connecting the shaft portion 16a of the winding knob 16 to the second film container 13. One method is to connect the shaft portion 16a of the winding knob 16 to the spool 14 of the second film container 13, and then incorporate the container into the camera body 11.The other method is to attach the second film container 13 to the camera body 11. After being assembled into the camera body 11, the winding knob 16 is attached to the spool of the second film container 13 from the outside of the camera body 11.
This is a method of connecting the shaft portions 16a of the two. These two direct connection methods are the same in terms of the form after direct connection, and may be selected in consideration of the flow of the entire manufacturing process.

Reference numeral 20 denotes a light shielding means between the camera body 11 and the winding knob 16, and the light shielding means 20 has various modes.
An example is shown in FIG. 3, FIG. 4, and FIG. In the case of FIG. 1, annular ribs 21 and 22 are raised around a through hole 19 provided on the upper surface of the camera body 11, and the annular ribs 21,
The concave grooves 23 and 24 that engage with the winding knob 1
6, forming a labyrinth of light.

In the case shown in FIG.
An elastic light shielding plate 2 having a through hole 25 that can be brought into close contact with the outer peripheral surface of a.
6 is attached as shown in A in the same figure, so as to be able to block light as shown in B in the same figure.

In the case of FIG. 4, the shaft portion 16 of the winding knob 16 is attached to the inner peripheral surface of the annular rib 21 raised around the through hole 19 of the camera body 11.
Light can be shielded by attaching a light shielding member (light shielding cloth or light shielding sponge) 27 in close contact with the outer peripheral surface of a.

The camera body 11 has built-in mechanisms necessary for photographing, as shown in the first figure. Below, these mechanisms will be briefly explained.

Reference numeral 28 indicates a perforation P of the film 15 that is transferred by rotating the winding knob 16 in the winding direction.
29 is a cam plate fixed to the shaft of the sprocket 28, and 30 is a shutter charge plate.

A pin 29a is provided at a symmetrical position on the upper surface of the cam plate 29, and the pin 29a is fixed when the cam plate 29 rotates half a turn (film
5), it engages with the protruding portion 30a of the shutter charge plate 30, and moves the shutter charge plate 30 to the right against the tension spring 31. Due to this movement, the notch 30b provided at the end of the shutter charge plate 30 is inserted into the protrusion 32 of the release plate 32.
’. This locking is done by the cam plate 29.
The pin 29a is removed from the projecting portion 30a of the shutter charge plate 30 after this point. Therefore, a force is applied to the shutter charge plate 30 in the direction of its return due to the action of the tension spring 31, but it will remain in that state (shutter charge state) unless the release plate 32 is pushed and the above-mentioned lock is released. Become. At this time, steps (not shown) provided at symmetrical positions on the outer circumference of the cam plate 29 are engaged with stoppers (not shown),
The winding knob 16 is prevented from turning any further.

Note that this stopper is designed to come off the stepped portion in the process when the release plate 32 is pressed and the shutter charge plate 30 returns to its initial position.

Further, the shutter charge plate 30 is provided with a shutter striking piece 30c in a hanging manner, which is pivotally supported so as to be able to rotate only in a clockwise direction.
When the shutter blade 30c hits a pin on the head of the shutter blade 34 that blocks the optical path of the photographing lens 33 while moving to the right, the shutter blade 30c rotates along the pin and overcomes the pin. Therefore, when the release plate 32 is pushed and the shutter charge plate 30 returns vigorously from the charge position by the action of the tension spring 31, the shutter striking piece 30c strikes the pin on the head of the shutter blade 34 in the process. As a result, the shutter blade 34 rotates around the support shaft 35 to open the optical path of the photographing lens 33, and then rapidly returns to its original state by the action of the return spring 36.

37 is a counter window that displays the number of film shots (or remaining number). The counter window 37 exposes the scale of an index board (not shown) that rotates by one scale every half rotation of a gear (not shown) connected to and rotated by the sprocket 28. 38 is a simple direct-view finder.

In the above embodiment, when the shooting of a predetermined number of frames is completed, all the film is stored in the light-tight second film container 13, so the film container is placed in a bright room and the camera body 11 is moved by an appropriate method. It can be broken and taken out.

〔Effect of the invention〕

As explained above, the present invention directly connects the shaft of the winding knob to the spool of the film container loaded in the winding chamber of the camera body through the through hole provided on the top surface of the camera body, and Since a light shielding means is provided between the film container and the knob, the spool of the film container and the winding knob can be directly connected while maintaining light shielding performance. Therefore,
The installation space for the coupling mechanism between the spool of the film container and the winding knob can be largely omitted, and this has the excellent effect of reducing the vertical dimension of the camera body even when using a cartridge containing 35 Dragon film. It is.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a partially cutaway front view showing one embodiment of the present invention;
The figure is a partially cutaway perspective view of the same, Figures 3 and 4 are partial sectional views showing the light shielding means between the camera body and the winding knob, and Figure 5 is the means for connecting the winding knob and the spool of the film container. FIG. 11--Camera body 12--First film container 13--Second film container 14-Spool 15--Film 16--Hoisting knob 17--Shaft of winding knob Co., Ltd. Figure 2 Figure 3

Claims (4)

[Claims] (1) The shaft of the winding knob is directly connected to the spool of the film container loaded in the winding chamber of the camera body through a through hole provided on the top surface of the camera body, and the shaft portion of the winding knob is directly connected to the spool of the film container loaded in the winding chamber in the camera body, and the shaft portion of the winding knob is directly connected to the spool of the film container loaded in the winding chamber in the camera body. A camera characterized in that a light shielding means is provided on the camera. (2) The light shielding means has an annular rib raised around the through hole, and a concave groove that engages with the annular rib in a diagonal shape is provided on the lower surface of the winding knob. camera. (3) The light shielding means is a patent claim in which an elastic light shielding plate having a through hole that can be brought into close contact with the outer peripheral surface of the shaft portion of the winding knob is attached to the upper surface of an annular rib raised around the through hole. Range 1
Camera mentioned in section. (4) The light shielding means is characterized in that a light shielding member is attached to the inner circumferential surface of an annular rib raised around the through hole so as to be in close contact with the outer circumferential surface of the shaft portion of the winding knob. The camera described in item 1.