JPH11338012A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film unit with a lens where the sliding operation of a protection cover is smoothly and stably performed while excellently maintaining the design of outside appearance without causing shavings when the sliding operation is performed. SOLUTION: Plural semispherical small projections 19a projecting toward the inner surface side of the protection cover 13 are formed at a position corresponding to the sliding range of the cover 13, which is covered when the cover 13 is at a shielding position and exposed when it is at a photographing position, on the front surface of a front cover 19 constituting an outside cover. The small projection 19a whose edge comes in contact with the inner surface side of the cover 13 at the time when the sliding operation of the cover 13 is performed supports the cover 13 by one point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a built-in photographic film cartridge, a simple photographic mechanism including a photographic lens and a shutter mechanism, and a lens unit with a built-in flash unit. The present invention relates to a film unit with a lens provided with a protective cover for protection.

[0002]

2. Description of the Related Art A simple exposure mechanism is provided so that anyone can easily enjoy taking a picture, and an unexposed photographic film and a cartridge are loaded in advance at the time of manufacture, so that cumbersome film loading and rewinding operations are not required. Film units with lenses are well known.

[0003] As a film unit with a lens, for example, "Sharp Run Super 800" (trade name) is manufactured and sold by the present applicant. This film unit with lens has a grip on the front of the cartridge storage chamber,
The shape around the taking lens other than the grip portion is reduced to reduce the thickness. Recently, the IX24, which is smaller than the 135-type photo film cartridge, has been developed.
A film unit with a lens loaded with a 0 film cartridge is also available as "Sharp Run Super Slim" (product name)
Etc. are manufactured and sold by the present applicant. In this film unit, the thickness and the profile are reduced by the size of the built-in small cartridge.

Although a small film unit with a lens is excellent in portability, it is difficult to hold the film unit with a lens for actual photographing, and the photographing lens may be caught by a finger and fail in photographing. is there. In order to solve this, an invention has been made in which a projection is provided around the photographing lens to warn the photographer of finger-holding, but the projection is provided around the photographing lens in a film unit with a lens or the like. It was not desirable in design and was not very effective.

Accordingly, for example, Japanese Patent Application No. 9-272661.
The protective cover for protecting the taking lens, such as the invention described in the specification of Japanese Patent Application No. 9-359055, is moved between a shielding position covering the taking lens and a taking position exposing the same. A freely provided film unit with a lens has been proposed by the present applicant.

[0006] As shown in FIG.
Is movably attached to the front surface of the outer cover 3 of the film unit 2 with lens. Further, a certain gap is formed between the inner surface of the protective cover 4 and the front surface of the outer cover 3. The gap is provided so that when the protective cover 4 slides, the inner surface of the protective cover 4 and the front surface of the outer cover 3 come into contact with each other and rub against each other, thereby preventing the generation of surface wear and shavings and performing a sliding operation smoothly.

[0007] In a region of the outer cover 3 corresponding to the sliding range of the protective cover 4, a pair of continuous ridges 5 extending in the sliding direction of the protective cover 4 are provided. This ridge 5 is used when the protective cover 4 is slid.
The gap between the protective cover 4 and the outer cover 3 prevents the protective cover 4 from flexing and coming off the outer cover 3 or being damaged, so that the protective cover 4 can be operated smoothly and stably. Things.

[0008]

However, if a pair of continuous ridges as described above is provided in the gap between the protective cover and the outer cover, the inner surface of the protective cover and the upper surface of the ridge are continuous. In this case, there is a problem that the contact area increases and the upper surface of the ridge rubs to generate shavings.

Further, when the protective cover is in the shielding position, the protruding ridge extending in the direction of the end of the outer cover is exposed and conspicuous, and there is a problem that the design is impaired. Furthermore, since the ridge extends toward the end of the outer cover, there is a problem that it is also difficult to provide a three-dimensionally raised logo or the like at the end of the outer cover that is in contact with the grip of the film unit with a lens. ing.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is possible to smoothly and stably slide a protective cover without generating shavings at the time of a slide operation and maintaining a good appearance design. It is an object to provide a film unit with a lens.

[0011]

In order to solve the above-mentioned problems, the present invention provides a photographing mechanism such as a photographing lens and a shutter device, a cartridge chamber for accommodating a photographic film cartridge, and a photographic film cartridge drawn out of the photographic film cartridge. A main body having a film roll chamber for accommodating the photographic film in a roll form, an outer cover formed with an opening for exposing the photographing lens and covering a front surface of the main body, and a sliding member slidably connected to the outer cover. In a state where a gap is formed between the lens unit and the front surface of the outer cover, a lens-fitted film unit including a shielding position that covers the photographing lens and a protective cover that is movable between a photographing position that exposes the shielding position. A plurality of small protrusions, which contact the inner surface of the protective cover when the protective cover is moved to the photographing position at least on the front surface of the outer cover. It is obtained by projecting.

The small projection is a hemispherical small projection,
Alternatively, it is a semi-cylindrical small projection.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 2, a film unit 2 with a lens according to the present invention has a winding knob 3, a shutter button 4, a strobe light emitting section 5, a strobe charging switch 6, a photographing lens 7, a finder objective window. 8, a light guide 9 for charging completion display, a window 10 for displaying the number of shots, and the like are provided to be exposed to the outside. An openable and closable bottom cover 12 for taking out a photographed film is provided on the bottom of the right hand grip 11 side.

On the front surface of the lens-fitted film unit 2, a protective cover 13 for protecting the photographing lens 7 is provided movably in the horizontal direction. Protective cover 13
Is a bent portion 13a on the upper side and a bent portion 13b on the lower side formed by bending a part of the upper side and the lower side into a hook shape.
And rail portions 19 provided at the upper and lower ends of the front surface of the front cover 19 constituting the outer cover of the film unit 2 with lens.
By being sandwiched between the front cover 19a and the front cover 19b, the front cover 19 constituting the outer cover is movably engaged with the front cover 19 in a state where the separation is prevented.

Then, the slidable member is slid between a shielding position for closing the finder objective window 8 and the opening 7b exposing the photographing lens 7 shown in FIG. 3 and a photographing position exposing them (see FIG. 2). At an end of the protective cover 13, a knob 13c serving as a fingerhold during the slide operation is formed.

The protective cover 13 is engaged so as to form a predetermined gap between the inner surface of the protective cover 13 and the outer surface of the front cover 19. By providing a gap between the protective cover 13 and the front cover 19, when the protective cover 13 is slid, the inner surface of the protective cover 13 and the outer surface of the front cover 19 come into contact with each other, causing shavings and the like. In addition to this, it is possible to slide the protective cover 13 smoothly by reducing friction.

On the other hand, the charging completion display light guide 9 is
It protrudes in conjunction with the ON operation of the flash charging switch 6. When the strobe charging switch 6 is operated to the ON position, as shown in FIG. 2, the charging completion display light guide 9 moves to a protruding position which protrudes outside from the film unit 2 with the lens. When the is moved to the OFF position, as shown in FIG. 3, the light guide 9 for charging completion display is moved to a retreat position in which the light guide 9 retreats within the outer contour of the film unit 2 with the lens.

As shown in FIG. 4, the film unit 2
Has a configuration in which a main body base 15, an exposure unit 16, a photographic film cartridge 17, and a strobe unit 18 are built in a sandwich structure with a front cover 19 and a rear cover 20. The rear cover 20 and the front cover 19 constitute an outer cover of the film unit 2 with a lens.

The photographic film cartridge 17 is a cartridge 22 in which a cover member 22a is incorporated in a film delivery port.
And a photo film 23. When the cover member 22a is opened and the spool 21 is rotated in the film feeding direction, the photo film 23 stored in the cartridge 22 is sent out from the leading end of the photo film 23 to the outside of the cartridge 22. IX240 film cartridge.

The main body 15 has a cartridge chamber 24 for accommodating the cartridge 22 and a cartridge 22.
And a film roll chamber 25 for accommodating the unexposed photographic film 23 drawn out of the film roll in the form of a film roll 23a. These rooms 24, 25
An opening is formed on the back side of the photographic film cartridge 17. After the photographic film cartridge 17 is loaded, the opening is closed with a rear cover 20, so that the photographic film cartridge 17 is made light-tight.

Above the cartridge chamber 24, a winding knob 3 is rotatably arranged. A shaft that engages with the spool 21 is formed integrally with the winding knob 3. This shaft, together with the winding knob 3, constitutes a film winding mechanism. The winding knob 3 is partially exposed to the outside through the opening 26 of the rear cover 20, and the spool is driven and rotated by rotating the exposed portion in the film winding direction (the direction of the arrow shown in the figure). Then, the taken photo film 23 is wound up into the cartridge 22.

Below the hoist knob 3, the hoist knob 3
A lid closing mechanism for closing the lid member 22a by detecting that all of the photographed photo films 23 have been stored in the cartridge 22 from the number of rotations in the film winding direction.

The cartridge chamber 24 and the film roll chamber 2
The bottom of each of 5 has an opening, and after the photo film cartridge 17 is loaded, the bottom is closed by pull-top type bottom lids 12 and 27 provided on the rear cover 20 respectively.
Among these, the lid 12 on the side of the cartridge chamber 24 is a lid that is opened when the photographed cartridge 22 is taken out.

The cartridge chamber 24 and the film roll chamber 2
5, an exposure opening (not shown) is formed in the main body base 15, and a photographing frame 23b corresponding to the size of the exposure opening is formed on the photographic film 23 as a latent image. An exposure unit 16 having a dark box is integrally provided in front of the exposure opening. On the right side of the exposure unit 16, a strobe unit 18 is attached. The strobe unit 18 is a unit component in which a strobe light emitting unit 5, a main capacitor 29, a strobe charge cutoff mechanism when not in use, a light guide moving mechanism, a power supply battery 30, and the like are integrally attached to a strobe board 28.

The light guide moving mechanism includes a switch plate 3
1, a support plate 32, and a light guide 9 for charging completion display. The switch plate 31 is provided integrally with the flash charging switch 6. The support plate 32 is fixed to the front surface of the strobe substrate 28, and the switch plate 31
Is supported to be able to move up and down freely. Light guide 9 for charging completion display
Is provided on the exposure unit 16 so as to be able to move up and down, and a pin 9 a protruding forward is connected to a connecting portion 31 a provided on the switch plate 31.

When the strobe charging switch 6 is operated to the ON position, the switch plate 31 moves together to move the charging completion display light guide 9 to the protruding position, and turns on the charging circuit of the strobe board 28. . When the switch is operated to the OFF position, the charging completion display light guide 9 is lowered to turn off the charging circuit.

The non-use strobe charging cutoff mechanism comprises a protruding piece 33 formed on the protective cover 13 and an engaging / disengaging portion 34 formed on the front surface of the switch plate 31. The protruding piece 33 enters the inner wall side of the front cover 19 and protrudes along the sliding direction of the protective cover 13.

If the protection cover 13 is operated to the shielding position when the strobe charging switch 6 is in the ON position, the projecting piece 33 engages with the engagement / disengagement portion 34 to push down the switch plate 31, thereby turning off the charging circuit. The light guide 9 for charging completion display is moved to the evacuation position. When the protective cover 13 is at the shielding position, the protruding piece 33 presses the engagement / disengagement portion 34 to prevent the strobe charging switch 6 from being operated to the ON position.

The exposure unit 16 includes a shutter charging mechanism, a shutter mechanism, a film winding mechanism, a film counter mechanism, a shutter button, a finder optical system, and the like in a dark box for forming a dark room between the taking lens 7 and the exposure opening. It is a unit that is integrally attached and unitized.

The shutter charging mechanism, the shutter mechanism, and the film winding mechanism include a well-known sprocket, shutter driving lever, locking lever, shutter blade, spring, and the like. The shutter button 4 is formed at one end of a single thin plate, and the other end is provided at the exposure unit 16.
Is fixed to the upper surface of the lens by a claw connection, so that it can be elastically moved by a pressing stroke necessary for shutter release. A push rod 35 is provided below the shutter button 4.
Are provided integrally.

The sprocket is arranged so as to engage with the perforations of the photographic film 23, and rotates as the film is transported by the film winding mechanism. The shutter drive lever is moved from the travel completion position to the charge position against the urging of the spring by utilizing the rotation of the sprocket, and is held at the charge position by the locking lever.

The locking lever detects the rotation of the sprocket when the photographic film 23 has been transferred by the length of one frame, and rotates the sprocket and the winding knob 3.
To prevent rotation. When the pressing force of the pressing rod accompanying the displacement of the shutter release is transmitted to the locking lever, the locking lever releases the holding of the shutter driving lever at the charged position, and prevents the rotation of the sprocket and the winding knob. Release the rotation stop of 3. When the shutter drive lever moves from the charge position to the release completion position by the bias of the spring, the shutter blade is kicked off during this movement. As a result, the shutter blade swings one reciprocation to perform exposure.

On the back surface of the protective cover 13, a release lock mechanism is incorporated. The release lock mechanism cooperates with the movement of the protective cover 13 to the shielding position, and moves the front cover 1.
The shutter release is prevented by preventing the displacement of the pressing rod 35 through the opening 9. Then, when the protective cover 13 is moved to the photographing position, the displacement prevention of the pressing rod 35 is released, and the operation of the shutter release is allowed.

As shown in FIG. 1, of the front surface of the front cover 19 constituting the outer cover, the protective cover 13 is covered when the protective cover 13 is in the shielding position and is exposed when in the photographing position. A hemispherical small projection 19a projecting toward the inner surface side of the protective cover 13 at a corresponding position.
Are formed. As shown in FIG.
9a, when the protective cover 13 is slid, the tip thereof comes into contact with the inner surface side to support the protective cover 13 at a point.

As described above, the small projections 19 are located on the front cover 19 at positions corresponding to the sliding range of the protective cover 13.
By forming a plurality of the small protrusions a, even when the protective cover 13 is attached to the front cover 19 with a certain gap therebetween, when the protective cover 13 slides, the small protrusions 1 are formed.
Since the tip of 9a is in contact with and supports the inner surface side of the protective cover 13, the protective cover 13 is not bent by being pressed and detached from the outer cover 3 or damaged.

The small projections 19a supporting the inner surface of the protective cover 13 do not come into wide contact with the surface as in the case of the conventional ridge, but come into contact with the inner surface of the protective cover 13 in a very small area. No debris is generated and the inner surface of the protective cover 13 is not significantly worn, so that the protective cover 13 can be smoothly and stably slid.

Further, since the small projections 19a supporting the inner surface of the protective cover 13 are fine hemispheres, they do not stand out in appearance and can maintain a good design of the film unit with lens 2. Further, unlike the conventional ridge, the protruding portion does not extend long in the direction of the end of the outer cover. Therefore, the logo protruding in a three-dimensional shape is provided at the end of the front cover 19 which corresponds to the grip portion of the film unit 2 with the lens. Can be provided, and the degree of freedom in design can be greatly improved.

In the above-described embodiment, four small projections 19a are provided. However, the number of small projections is not limited to four. It may be provided at any position corresponding to the movement range.

The small projections for supporting the inner surface of the protective cover are not limited to the above-described hemispherical shape, and a small semi-cylindrical small projection 51 corresponding to the moving range of the protective cover 52 as shown in FIG. May be provided on the outer surface of the outer cover 53.

Further, in the above-described embodiment, IX
Although the 240-film cartridge 17 is used, the present invention is not limited to this, and a well-known 135-type photographic film cartridge may be used. Alternatively, a 135-type photographic film is used and a dedicated cartridge having a smaller diameter than the cartridge is used. It may be something.

[0041]

As described above, according to the present invention, a photographing mechanism such as a photographing lens and a shutter device, a cartridge chamber for accommodating a photographing film cartridge, and a photographing film drawn from the photographing film cartridge are rolled. A main body provided with a film roll chamber for accommodating the main body, an outer cover formed with an opening for exposing the photographing lens and covering a front surface of the main body, and slidably engaged with the outer cover; In a film unit with a lens comprising a shielding position covering the taking lens and a protective cover movable between a taking position exposing the taking position, with a gap formed between the outer cover and the front surface of the outer cover, Since a plurality of small projections projecting from at least the inner surface of the protective cover when the protective cover is moved to the photographing position are projected, Shavings is not generated at the time of work, while external design also maintained good, it is possible to provide a film unit that is to smoothly and stably slide operation the protective cover.

[Brief description of the drawings]

FIG. 1 is a perspective view of an essential part showing the vicinity of a protective cover of a film unit with a lens according to the present invention.

FIG. 2 is a perspective view showing a film unit with a lens in a state where a protective cover is at a photographing position.

FIG. 3 is a perspective view showing the lens-equipped film unit in a state where a protective cover is at a shielding position.

FIG. 4 is an exploded perspective view of the film unit with a lens.

FIG. 5 is a horizontal sectional view of the film unit with a lens.

FIG. 6 is a perspective view of a main part showing a second embodiment.

FIG. 7 is a perspective view of a main part showing the vicinity of a protective cover of a conventional film unit with a lens.

[Explanation of symbols]

 2 Film unit with lens 3 Winding knob 4 Shutter button 13 Protective cover 19 Front cover 19a Small protrusion

Claims (2)

[Claims] 1. A main body comprising: a photographing mechanism such as a photographing lens and a shutter device; a cartridge chamber for storing a photo film cartridge; and a film roll chamber for storing a photo film drawn from the photo film cartridge in a roll shape. And an outer cover formed with an opening for exposing the photographing lens and covering the front surface of the main body, and a state in which the outer cover is slidably engaged with the outer cover to form a gap between the outer cover and the front surface. A film unit with a lens comprising a protective cover movable between a shielding position covering the photographing lens and a photographing position exposing the photographing lens, wherein at least the protective cover is moved to a photographing position in front of the outer cover. Abuts the inner surface of the protective cover when
A film unit with a lens, comprising a plurality of small projections. 2. The lens-fitted film unit according to claim 1, wherein the small projection is a hemispherical or semi-cylindrical small projection.