JPH07128803A - Film unit with lens - Google Patents

Abstract

PURPOSE:To reduce scratch generated on the externally exposed part of a unit main body in the case of being carried. CONSTITUTION:A rising plane 10a which is externally exposed after an external body is packaged is formed on one part of the upper surface of the front cover of the unit main body on this film unit with a lens. Four projections 20 are formed on the rising plane 10a. On a process for inserting a battery 32 for a stroboscopic unit; the unit main body is carried by a belt conveyer 40 while making the bottom surface of the unit main body upward. The unit main body is supported by the point contact of the projections 20 and a carrying surface 40a. Consequently, even when the unit main body is rubbed with the carrying surface 40a, the rubbing thereof is suppressed only on the part where the projections 20 is in point-contact with the carrying surface 40a, so that the rising plane 10a externally exposed is prevented from largely scratched.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-fitted film unit.

[0002]

2. Description of the Related Art A lens-fitted photo film unit, in which a photo film is pre-loaded in a unit body incorporating a simple photo-taking mechanism, a winding mechanism, and a strobe unit, has been sold and widely used so that a photograph can be taken easily at any time. . The unit body is covered with a paper box that serves as an exterior body, and the winding knob, shutter button, shooting lens, strobe light-emitting part, etc. are exposed from the window in which the exterior body is opened so that you can perform shooting operations with the paper box covered. Has become.

The unit main body is assembled on each part and loaded with a film while being conveyed by a belt conveyor during the assembling process. Finally, after the battery for the power supply for the strobe unit is inserted, the outer body is covered. When transported on the belt conveyor, the unit body may rub against the belt conveyor and cause some scratches,
Since the unit body was covered with a paper box, no scratches were exposed to the outside.

By the way, a standard / panorama switching type in which an exposure screen switching mechanism is built in a film unit with a lens so that the exposure screen can be switched between the full size and the panorama size even during the shooting of one film. A film unit with a lens (hereinafter referred to as "panorama switching film unit") has been proposed (Japanese Patent Application No. 5-65522). In this panorama switching type camera, the viewfinder field range and the shooting range are switched between standard and panorama in conjunction with the sliding movement of the operation knob. In the panorama switching type film unit, the space issue and the member that limits the viewfinder field for panorama and the member that switches the shooting range need to be operated in conjunction with the operation knob, so these members are provided around the viewfinder. ing. For this reason, the upper surface of the unit body has a shape in which the upper part of the finder and its periphery are raised.

[0005]

When the upper surface of the unit main body is raised like the panorama switching type film unit described above, it is convenient for the design and the raised portion is covered with an exterior such as a paper box or a plastic sheet. Since covering with the body complicates the shape of the exterior body and the step of wrapping the product, the cost is increased, so that the exterior body is exposed to the outside through an opening formed in the exterior body. However, in the step of inserting the strobe battery, the bottom surface of the unit main body is directed upward, and the raised upper surface portion is brought into surface contact with the belt conveyer for conveyance. At this time, the raised upper surface portion may be rubbed against the belt conveyor to cause scratches. This abrasion has the drawback that it is exposed to the outside because it is not covered by the exterior body, which is not desirable as a product.

The present invention has been made to solve such a problem, and during the assembly of the unit main body, for example, when the unit main body is conveyed by a belt conveyor, the portion exposed to the outside through the opening of the exterior body is scratched. It is an object of the present invention to provide a film unit with a lens that does not generate.

[0007]

In order to achieve the above object, according to the present invention, a plurality of protrusions are formed on the outer surface of the unit body exposed from the opening, and the unit body is placed flatly by these protrusions. Be able to support on the surface.

[0008]

According to this, in the assembly process, when the unit main body is conveyed by bringing the outer surface exposed to the outside through the opening of the exterior body into contact with the conveying surface such as a belt conveyor, the unit main body is provided on the outer surface. Since the protrusions come in contact with the transport surface and support the unit main body, the scratches caused by rubbing with the transport surface can be suppressed to a very small area in contact with the protrusions.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 2 and 3 show a state in which a unit main body of a lens-fitted film unit capable of taking a picture by selecting the screen size of the film as either full size or panoramic size is disassembled. The unit body is the body base 2
A rear cover 3 is detachably attached to the back of the front cover, and a strobe unit 4 and a mechanical unit 5 are detachably attached to the front of the front cover unit 6.
Is detachably attached.

An exposure frame 2a is integrally formed on the main body base 2, and a cartridge chamber 2b is provided on both sides of the exposure frame 2a.
And the film roll chamber 2c are integrally formed. Inside the cartridge chamber 2b and the film roll chamber 2c, a 135 type film with a cartridge defined by the international standard (ISO: 1007-1979 version) is loaded. The exposure frame 2a is formed in a size slightly larger than the full size. Above the Patrone chamber 2b,
Inside the cartridge chamber 2b, there is provided a winding knob 7 integrally formed with a fork that engages with the core of the cartridge, and by rotating the winding knob 7 in the direction of the arrow, the film already photographed can be transferred to the cartridge. Get caught in.

A film regulating surface 3a is formed on a portion of the rear cover 3 facing the exposure frame 2a. Rear cover 3
A lid 3b for closing the bottom surface of the cartridge chamber 2b and a lid 3c for closing the bottom surface of the film roll chamber 2c are formed on the lower side. The rear cover 3 is light-tightly attached to the rear surface of the main body base 2 after the film with the cartridge is housed in the cartridge chamber 2b and the film roll chamber 2c of the main body base 2, and the lids 3b and 3c are respectively attached to the cartridge chamber 2b. And the bottom surfaces of the film roll chamber 2c are light-tightly closed. A finder eyepiece window 8 is opened above the film regulating surface 3 a of the rear cover 3. An upper plate 9 extending in the main body base 2 direction is formed at the upper end of the rear cover 3 above the film regulation surface 3a. A U-shaped notch is provided at the tip of the upper plate 9, and the tip is a protruding wall 9a bent upward in an L shape.

The protruding wall 9a is adapted to enter below the rear end of the raised flat surface 10a on the upper surface of the front cover 10. Further, as shown in FIG. 4, the claw 11a provided on the paper box 11 is inserted into the rear surface side of the protruding wall 9a so that the paper box 1
1 is formed with an elongated concave portion 12 for preventing floating of the unit body 1.

The front cover unit 6 comprises a front cover 10, an operation plate 13, and a cover plate 14. A shutter button 17 and the like are integrally formed on the front cover 10 in addition to the finder objective window 15 and the stroboscopic light emission window 16. The upper surface of the front cover 10 is a raised flat surface 10a having a flat central portion for accommodating an intermediate lever 18 and a top plate 19 described later. This raised plane 10
Hemispherical projections 20 are provided at four corners on the upper surface of a. The projections 20 support the unit body so that it does not tilt or fall when the bottom surface of the unit body is placed upward. Further, a window 21 for displaying the number of shots is opened on the raised plane 10a.

An operation plate 13 is mounted on the front surface of the finder objective window 15 so as to be slidable along the film feeding direction. The operation plate 13 is integrally provided with a panoramic field frame 13a and an operation knob 13b. The panoramic visual field frame 13a is formed with a size that defines the visual field range of the finder to have the same aspect ratio as the panoramic size. In addition, the cover plate 14 is integrally provided with a full-size visual field frame 14a that defines the same aspect ratio as the full-size on the optical axis of the finder, and an elongated hole opening 14b for movably exposing the operation knob 13b to the outside. It is provided in.

The operation plate 13 is operated by sliding the operation knob 13b within the elongated hole opening 14b, so that a panoramic photographing position where the panoramic visual field frame 13a is located on the optical axis of the viewfinder and a full-size photographing position retracted from the panoramic photographing position. It is slid between. At these positions, the notches 13d and 13e integrally provided on the lower portions of both sides of the operation plate 13 and the click claws 10d and 10e integrally provided to the front cover 10 are provided.
And click join. In order to reduce the movement amount of the operation plate 13, the edge 13c at one end of the operation plate 13 is
The cross-sectional shape is cut out so as not to block the viewfinder field range at the full size position. A cam plate 22 protruding rearward is integrally formed with the operation plate 13. The cam plate 22 is a protrusion portion of the intermediate lever 18 attached to the mechanical unit 5 through the opening of the front cover 10.
Contact a.

The mechanical unit 5 has a construction in which an exposure screen switching mechanism, an exposure imparting mechanism and the like are incorporated in a dark box 24 for guiding only the subject light transmitted through the taking lens 23 to the exposure frame 2a. A film winding stopping mechanism, a film counter mechanism, and the like of the exposure imparting mechanism are incorporated on the upper surface of the dark box 24, and shutter blades, a taking lens 23, and the like are attached to the front surface of the dark box 24.

A pair of concave holding frames 25 are integrally formed on the upper right side of the dark box 24. Two inverted Galilean type finder lenses 27, each of which is composed of an objective lens and an eyepiece lens, are detachably inserted into the holding frame 25.
9 is draped over. And on the top of the top plate 19,
An intermediate lever 18 that rotates in conjunction with the operation knob 13b is attached. The top plate 19 is for pressing the objective lens and the eyepiece lens against the holding frame 25. The viewfinder lenses 27 are arranged between the viewfinder objective window 15 of the front cover 10 and the viewfinder eyepiece window 8 of the rear cover 3. The top plate 19 is made of a transparent plastic material, and a portion facing the number-of-photographed image display window 21 is a convex lens, so that the number-of-image display recognized from the number-of-photographed image display window 21 is enlarged and visually recognized.

A crank lever that interlocks with the rotation of the intermediate lever 18 of the exposure screen switching mechanism is attached to the right side surface of the dark box 24, and a movable type interlocked with the crank lever that changes the exposure screen size inside the dark box 24. Is provided (not shown). As a result, operation knob 1
When 3b is slid to the right in FIG. 6, a full-size viewfinder field is obtained, and in the dark box 24 the light-shielding plate is retracted to set a full-size exposure screen frame, and the operation knob 13b is slid to the left. In addition to a panoramic size finder field of view, a light shielding plate projects vertically in the dark box 24 to set a panoramic size exposure screen frame.

The mechanical unit 5 includes the exposure frame 2 of the main body base 2.
It is detachably attached to the front surface with a claw coupling or the like. At the time of assembling, the top plate 19, the rotating lever 18, etc. are attached to the front cover 10.
Is housed in a space below the raised flat surface 10a, and the projecting wall 9a of the rear cover 3 enters below the rear end of the raised flat surface 10a from the back side so that these members are not exposed to the outside. .

The strobe unit 4 includes a strobe light emitting section 2
9, X contacts 30 and the like are provided. The strobe unit 4 is attached to the front surface of the main body base 2 and has an electrode terminal 31.
The a and 31 b are arranged below the mechanical unit 5. When the rear cover 3 and the front cover unit 6 are attached to the main body base 2, an opening exposing the electrode terminals 31a and 31b is formed on the bottom surface of the unit main body.
Is inserted. In the strobe unit 4, the elastic strobe switch 33 integrally formed on the front cover 10 is pressed to operate the strobe substrate 3 via the contact plate 34.
The circuit of 5 is closed, and charging of the main capacitor 36 is started. When the charging of the main capacitor 36 is completed, the charging completion lamp 37 blinks, and when the X contact 30 is turned on in association with the operation of the shutter blades, a trigger signal is sent out. When this trigger signal is obtained, strobe light is emitted from the strobe light emission unit 29 through the strobe light emission window 16.

FIG. 5 shows the paper box, which is an exterior body of the unit main body, in an unfolded state. In order to expose the shutter button 17, the winding knob 7, the stroboscopic light emitting section 29 and the like to the outside of the paper box 11. The opening is provided. An opening 37 for exposing the raised flat surface 10a protruding from the unit body and the cover plate 14 to the outside is opened in the central portion of the paper box 11. A claw 11a is formed on the edge of the opening 37 that contacts the protruding wall 9a of the rear cover 3. After assembly, the unit body is covered so that the raised flat surface 10a and the cover plate 14 project from the paper box 11 as shown in FIG.

Next, the operation of the above embodiment will be briefly described. On the front surface of the molded main body base 2, the mechanical unit 5 in which each member is assembled and the strobe unit 4 excluding the battery 32 are mounted. After that, in the dark room, after the unexposed film with the cartridge is inserted into the cartridge chamber 2b and the film roll chamber 2c, the rear cover 3 is attached, and the bottoms of the cartridge chamber 2b and the film roll chamber 2c are closed by the lids 3b and 3c. The film with a cartridge is stored in a light-tight manner. A front cover 10, an operation plate 13, and a cover plate 14 are sequentially mounted from the front surface of the main body base 2 in which the film with a cartridge is stored. This unit body is a battery 3
2 is sent to the step of inserting.

In the step of inserting the battery 32, as shown schematically in FIG. 1, the unit main body has a bottom surface so that the battery 32 is inserted through an opening formed in the bottom surface of the unit main body. Then, it is carried on the belt conveyor 40. The unit body is temporarily stopped under the device for inserting the battery 32, and the battery 32 is inserted between the electrode terminals 31a and 31b through the opening on the bottom surface of the unit body.

At the time of this conveyance, the four protrusions 20 provided on the raised flat surface 10a form the conveyance surface 40 of the belt conveyor 40.
The unit body is supported by making point contact with a. Therefore, when the unit body is repeatedly stopped and restarted, even if the conveyance surface 40a of the belt conveyor 40 is slipped and rubbed, only a very small area at the apex of the protrusion 20 is in contact. Therefore, the scratches can be suppressed to be small and inconspicuous.

When the battery 32 is completely inserted, the paper box 11 is sent to the packaging step, and the paper box 11 is packaged as shown in FIG. At this time, the claw 11a provided in the opening 37 is put in the recess 12 of the protruding wall 9a of the rear cover 3, so that the edge does not rise even if the size of the opening 37 is large. In addition,
The claw 11a and the concave portion 12 for preventing such lifting.
May be provided at a plurality of locations with respect to the opening 37, and similar claws and recesses may be provided at other openings of the paper box 11 and the unit main body. By doing this, the paper box 11
It is possible to surely suppress the floating of each of the openings.

In the above embodiment, the number of projections for supporting the unit main body is four, but three may be sufficient for supporting the unit main body without tilting. A ridge may be provided on the entire circumference of the raised plane exposed from the opening of the exterior body, but since the ridge is easily noticeable, at least two protrusions should be provided so that elongated protrusions are provided on opposite sides. It is better to install in The film unit with a lens that can switch between full-size shooting and panorama-size shooting has been described, but it does not have to be a switchable type. Furthermore, when a portion exposed to the outside comes into contact with the transport surface other than when the battery is inserted, a projection for supporting the unit body by contact may be provided at this portion.

[0027]

As described in detail above, according to the present invention, the unit main body can be supported on the flat mounting surface on the outer surface of the unit main body which comes into contact with the transport surface and is exposed from the opening of the exterior body. Since a plurality of protrusions are provided, scratches generated by rubbing against the transport surface can be suppressed to a very small area at the tip of the protrusions to make the scratches inconspicuous, and the unit body exposed from the opening of the exterior body It becomes possible to provide a good product as a product without causing a large abrasion due to the surface contact of the outer surface portion of the product.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing a state in which a unit main body is conveyed in point contact with a conveyance surface by a protrusion.

FIG. 2 is an exploded perspective view showing a main part of a lens-fitted film unit.

FIG. 3 is an exploded perspective view showing a front cover unit of the lens-fitted film unit.

FIG. 4 is a perspective view showing a claw for preventing the exterior body from rising and a recess in the rear cover.

FIG. 5 is a plan view showing the paper box in a developed state.

FIG. 6 is a perspective view showing an external appearance of a lens-fitted film unit in a state where a paper box is wrapped.

[Explanation of symbols]

 2 main body base 3 back cover 4 strobe unit 10 front cover 10a raised flat surface 11 paper box 20 protrusion 32 battery

Claims (1)

[Claims] 1. A lens-fitted film unit in which a unit main body incorporating a film and a cartridge is covered with an exterior body, and an outer surface of the unit main body is partially exposed from an opening formed in the exterior body. The lens-fitted film unit is characterized in that a plurality of protrusions are formed on the outer surface of the unit body, and the unit body can be supported on a flat mounting surface by these protrusions.