JPH0862787A - Film unit provided with lens - Google Patents

Abstract

PURPOSE: To use a main body again even though the screw of the main body is loosened in the case an external member is attached by a set screw by forming a spare through-hole for the set screw on the external member and also forming a lower spare hole for the set screw on the main body oppositely to the through-hole. CONSTITUTION: The film unit provided with lens which is a defective products is exchanged with a new unit and is reassembled. However, the main body screwed by the set screw 5 once is hard to be screwed again because the screw is loosened, as the case may be. The spare through-holes 7 and 8 are formed on a front cover 3, and the lower holes for the screw are formed on the main body opposed to the through-holes 7 and 8. Consequently, the screw holes function as the spare screw holes, and the unused screw holes are used in the case of re-assembling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-equipped film unit equipped with a simple camera mechanism and preloaded with unexposed film.

[0002]

2. Description of the Related Art As a structure of a conventional film unit with a lens, when an exterior member is attached to a main body, a means for locking by providing a locking claw on one side and a protrusion or a hole on the other side is widely used. As a more reliable means against vibration and impact, a locking means using a set screw is more preferable. However, in order to reuse the internal unit of the film unit with a lens, that is, for reuse, it is necessary to remove the exterior member when disassembling and inspecting. At this time, when the exterior member is locked by the locking claw, Since the locking claws are destroyed, the exterior member cannot be reused. Further, when the set screw is used, the exterior member can be reused if there is no scratch or the like, but the body once screwed becomes a screw idiot, and the body cannot be reused. Therefore, a large-sized exterior member or main body that cannot be reused is crushed and pelletized, and re-molded into a cassette of a video tape, a back cover of a television, or the like, which is so-called recycling. However, recycling is more costly and less productive than reuse.

As another structure of the conventional film unit with a lens, a cartridge containing an unexposed film is loaded into the film unit with a lens in the manufacturing process, and after the film is pulled out from the cartridge in a dark room, the film is spooled. The film is wound up as much as it can be wound up and shipped, but in winding up the film, the winding shaft of the winding device is inserted through the winding window of the spool and engaged with the spool. After the winding of the film is completed, it is necessary to shield the winding window from light. For example, in the invention filed by the applicant of the present application in Japanese Patent Application No. 5-83467, as shown in FIG. The light shielding cover C is inserted from the orthogonal direction to shield the light.

[0004]

SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a lens-equipped film unit in which the main body can be reused even if the outer body is attached by a set screw and the main body becomes screwed. Let's take the first challenge.

A second object of the present invention is to provide a film unit with a lens capable of shielding light without using a separate light shielding lid for shielding the spool winding window.

[0006]

A first object of the present invention is to provide a lens-equipped film unit in which an exterior member is screwed to a main body with a set screw according to the present invention, and a spare set screw through hole is formed in the exterior member. This is solved by providing a spare set screw pilot hole in the main body while facing the through hole.

A second object of the present invention is, in a lens-fitted film unit in which a cartridge containing an unexposed film is loaded, and the film is wound from the cartridge onto a spool for shipment in the present invention. And closing the end of the light shielding lid to the front cover to close the opening for the winding device for winding the film on a spool.

[0008]

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

This figure is a view before the paper cover 2 is attached to the lens-fitted film body 1. The lens-equipped film main body 1 protects the internal mechanism by a front cover 3 and a rear cover 4 which are exterior members, and holds the film in a light-tight state. The front cover 3 is screwed to a main body (not shown) with a set screw 5. Reference numeral 3a is an optical unit including a taking lens window and a finder window, 3b is a release button, and 6 is an exponent. By inserting the paper cover 2 into the lens-fitted film main body 1 from the direction of the arrow, the optical portion 3a projects from the hole 2a, the release button 3b projects from the hole 2b, and the exponent 6 can be viewed from the hole 2c. The other members including the set screw 5 are covered with the paper cover 2.
The paper cover 2 covers unsightly parts of the front cover 3 and the rear cover 4, and the product name and a simple handling method are described.

The film unit with a lens thus completed is shipped and photographed by the user, and then returns to the laboratory through a photo shop for development and printing, but the maker uses the film unit for reuse. Collect the film unit with lens that you took out. For the collected film unit with lens, the paper cover 2 is removed, the set screw 5 is removed, the front cover 3 is removed, the internal unit is removed, and an inspection is performed to select a reusable unit. In this way, the non-defective unit is reused, and the defective unit is replaced with a new unit for reassembly. However, the main body screwed once with the set screw 5 becomes a screw stupid, and it becomes difficult to perform the screw fixing again. For this reason, other through holes 7 and 8 are formed in the front cover 3, and a screw pilot hole is formed in a main body (not shown) facing the through holes 7 and 8. Therefore, they serve as spare screw holes and use these unused screw holes during reassembly. Although the screw hole used at the beginning is not necessary, there is no problem because the completed film unit with lens is covered with the paper cover 2.

Further, additional spare screw holes may be prepared for the third and subsequent assembly.

A second embodiment of the present invention will be described with reference to FIGS. 3 and 4.

FIG. 3 is a longitudinal sectional view of the spool of the film unit with lens. Front cover of a cartridge (not shown) that contains unexposed film during the manufacturing process
The main body 22 having the exterior 21 is loaded, the film F is pulled out from the cartridge in a dark room, the leader portion is wound around the spool S, and then the rear cover 23 is exteriorized. Subsequently, the winding shaft of a winding device (not shown) for winding the film is inserted from the winding window 24 of the spool S, and the engaging portion S of the spool S is inserted.
The film F is wound on the spool S as much as possible by engaging with a. Then, the front cover 21 is closed by a light-shielding lid 21a formed integrally with the front cover 21 to make the winding window 24 light-tight. In addition, 21
In the state of b, the light shielding lid 21a is opened.

FIG. 4A is a plan view of the light shielding lid 21a, FIG.
FIG. 4B is a sectional view taken along line CC of FIG. Shade lid 21a
Locking portions 21c are provided at both ends of the light blocking lid 21a. When the light blocking lid 21a is closed, the locking portions 21c lock the lower portion of the front cover 21 to keep the light blocking lid 21a closed.

[0015]

According to the first aspect of the present invention, since the spare pilot hole can be reused even if the body is screwed by screwing, it is possible to realize a film unit with a lens that not only reduces the cost but also wastes resources. it can.

According to the second aspect, since the screw pilot hole before and after use is covered with the paper cover, the exterior does not become unsightly.

According to the third aspect, since the spool is closed by the light-shielding lid formed integrally with the front cover, the number of parts is reduced, and the same parts are engaged with each other, so that the accuracy is improved and the light-shielding is surely performed. It can be carried out.

[Brief description of drawings]

FIG. 1 is a view of a light-shielding lid that shields a spool of the related art.

FIG. 2 is a diagram of a first embodiment of the present invention.

FIG. 3 is a diagram of a second embodiment of the present invention.

FIG. 4 is a diagram of a second embodiment of the present invention.

[Explanation of symbols]

 S Spool F Film 1 Film main body with lens 2 Paper cover 3,21 Front cover 4,23 Rear cover 5 Set screw 7,8 Through hole 21a Light-shielding lid

Claims (3)

[Claims] 1. A lens-equipped film unit in which an exterior member is screwed to a main body with a setscrew, and a spare through hole for a set screw is formed in the exterior member, and the main body is opposed to the through hole. A film unit with a lens, which is provided with a preliminary hole for a set screw. 2. The lens-equipped film unit according to claim 1, wherein the set screw through hole of the exterior member is covered with a paper cover. 3. In a lens-equipped film unit in which a cartridge containing an unexposed film is loaded, and the film is wound on a spool from the cartridge and shipped, a light-shielding lid is formed integrally with a front cover, and A lens-equipped film unit, characterized in that an opening for a winding device for winding the film on a spool is closed by locking an end portion to the front cover.