JPH0934009A - Strap device for film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the removal of a strap in the midst of use and to improve operability by removing the strap without breaking a part of a paper package. SOLUTION: This strap device 21 is constituted of a strap part 29 and an engaging plate 22 connected to the strap part 29 and the engaging plate 22 is provided with an engaging pawl 22b which is inserted between a unit main body and an outside case 7 through an opening 18 and engaged with a restraining hole 6a provided on the surface of the unit main body, in a state where the pawl 22b is pushed by the inside surface of the outside case 7 and a thin release tape 23 which is stuck to the engaging plate 22 and pulled in the state where the engaging pawl 22b is engaged with the restraining hole 6a, to release their engagement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a strap device which can be attached to and detached from a lens-fitted film unit.

[0002]

2. Description of the Related Art A simple photographing mechanism is provided so that anyone can easily take a photograph, and the international standard ISO1007-
A lens-fitted film unit pre-loaded with a 135-type film with a cartridge defined in 1979 is well known. A film unit with a lens like this is also described by the applicant of the present invention, for example, "Sharp Run.
r800 "(trade name) and the like are manufactured at low cost and are widely offered to the public at low cost.

There is a demand to attach a strap to the film unit with a lens to prevent the film unit from dropping during photography and to improve portability. It is sold at. In this case, in order to attach the strap to the lens-fitted film unit, an adhesive tape having release paper is provided at the end of the strap and attached. The user first peels off the release paper provided at the end of the strap purchased with the lens-fitted film unit, and attaches it to an appropriate position of the lens-fitted film unit for use.

Further, for example, in Japanese Patent Application No. 7-98462, a unit main body is composed of a strap portion and an engagement plate connected to the strap portion, and is pressed against the engagement plate by the inner surface of the exterior body. There is described a strap device having a structure in which an engaging claw that engages with a locking hole provided in the engaging hole is provided, and the locking hole and the engaging claw engage with each other to engage the lens-fitted film unit.

[0005]

However, as described above, the strap fixed to the lens-fitted film unit by the sticking method is also collected when the lens-fitted film unit is subjected to the printing process. The strap will be used only once. As a result, the cost of the strap is considerably large for the user, and in the case of the lens-fitted photo film unit, which is originally one of the most important features to be provided at a low cost, such a cost increase is significant. It becomes a problem.

Further, even in the case of a strap which can be attached to the lens-fitted film unit by the engagement of the locking hole and the engagement claw, once the engagement plate of the strap device is engaged with the unit main body, the lens is again attached. When removing from the attached film unit, it cannot be removed unless a part of the paper box covering the lens-attached film unit is broken. Therefore, it is practically impossible to remove the strap during use of the lens-fitted photo film unit, and there is a problem that the usability is extremely poor.

The present invention has been made in consideration of the above problems of the prior art. A strap device which can be attached and detached to and from the lens-fitted photo film unit as many times as necessary and which can be repeatedly used is provided. The purpose is to provide at low cost.

[0008]

In order to achieve the above object, in the strap device of the present invention, a flexible strap portion that is held when the lens-fitted film unit is carried,
An engaging plate connected to the strap portion, the engaging plate being inserted between the unit main body and the outer body through an opening formed in the outer body, and being pressed by the inner surface of the outer body An engaging claw that engages with an engaging hole provided on the surface of the main body, and an engaging claw that is adhered to the engaging plate and is pulled while the engaging claw is engaged with the engaging hole. And a release tape in the form of a thin tape for releasing the engagement with.

According to a second aspect of the present invention, one end of the release tape is fixed to an end of the engagement plate, and
In claim 3, in the state where the engagement plate is engaged with the unit main body, a clip portion that is exposed to the outside of the exterior body and clamps the vicinity of the opening of the exterior body is provided integrally with the engagement plate. It is a thing.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view showing a strap device embodying the present invention and a lens-fitted film unit, and FIG. 2 is an external perspective view showing only the unit body of the lens-fitted film unit. The lens-fitted photo film unit 2 embodying the present invention is roughly divided into a unit main body 3 including a main body 4, a front cover 5 and a rear cover 6, and an outer box 7 which is an exterior body covering the unit main body 3. ing.

Most of the unit body 3 is mainly made of hard plastic, and the entire outer surface of the unit body 3 is covered with a paper-made outer box 7 made of resin. The outer case 7 keeps the external appearance of the lens-fitted film unit 2 clean, and displays instructions on how to use it to explain the handling to the user. The outer box 7 is provided with holes for exposing the taking lens 11, the shutter button 12, the winding knob 13, the finder 14, the remaining film number display window 15, the stroboscopic light emitting section 16, and the like.

The main body 4 of the unit main body 3 accommodates a photographing mechanism such as a photographing lens 11 and a finder 14 and an unexposed photographic film and cartridge. Further, a strobe device having a strobe light emitting section 16 and the like is built in on the left side of the front surface. Further, the front cover 5 is provided with an opening for exposing the above-mentioned taking lens 11, finder 14, etc., and a shutter button 12 is integrally formed. Further, the rear cover 6 covers the back surface of the main body portion 4 in a light-tight manner, and has a hole for exposing the winding knob 13. On the left side surface of the outer box 7, a strap device 21 described later is attached to the film unit 2 with lens.
An opening 18 is provided for mounting on.

As shown in FIG. 3, the strap device 21 comprises an engagement plate 22 and a strap portion 29 which is inserted into an opening 22a provided at the end of the engagement plate 22. The engaging plate 22 has a bent engaging claw 22 having a spring property.
b is integrally provided. Further, one end of a release tape 23 formed of a flexible resin tape is attached from the surface of the engagement claw 22b in the bending direction of the engagement claw 22b to the end of the engagement plate 22. The engaging plate 2
A concave portion 22d is formed at the end of the concave portion 22d.
By sticking the release tape 23 so that the end portion of the release tape 23 is inserted, the end portion of the release tape 23 is prevented from peeling off when the strap device 21 is repeatedly attached to and detached from the lens-fitted film unit 2. Further, the engagement plate 22 is provided with two stabilizers 22c integrally projecting.

The strap device 21 described above is shown in FIG.
As shown in (A), from the slit-shaped opening 18 provided on the left side surface of the outer box 7 of the lens-fitted film unit 2,
The engaging plate 22 is inserted into the gap between the unit body 3 and the outer box 7, and the engaging claw 22b engages with the engaging hole 6a of the rear cover 6 formed by the curved outer wall of the cartridge chamber provided in the body portion 4. By doing so, the film unit with lens 2 is attached. At this time, the engaging plate 22 is pressed against the unit body 3 by the outer box 7, and the engaging claw 22b is bent, so that the engaging claw 22b surely engages with the locking hole 6a.

At this time, the release tape 23 is pulled out of the lens-fitted film unit 2 through the opening 18 from the engaging claw 22b, which is a portion adhered to the engaging plate 22, and the other end. Further, the two stabilizer plates 22c projecting from the engaging plate 22 press the outer box 7 from the outer surface to prevent the engaging plate 22 from wobbling at the time of engagement, and the strap device 21 stabilizes the lens. Attached to the attached film unit 2.

As the strap portion 29, a flat woven strap portion is used from the viewpoints of portability and design, and both end portions are sewn in an annular shape. It is even more preferable to give the strap portion 29 a logo or a unique design.

The operation of the strap device configured as described above will be described. When purchasing the lens-fitted photo film unit 2, the user selectively purchases the strap device 21, which is sold separately as an option. In particular, a user who carries the lens-fitted film unit 2 around the outdoors and shoots it is desirable to purchase the strap device 21 in advance.

When attaching such a strap device 21 to the lens-fitted photo film unit 2, as shown in FIG.
The strap device 21 with the stabilizer 22c facing up.
Of the unit main body 3 from the opening 18 so that the outer box 7 is sandwiched between the stabilizing plate 22c and the engaging plate 22.
The engaging plate 22 is inserted into the gap between the outer case 7 and the outer box 7. Engagement plate 22
When more than half is pushed into the opening 18, the bent engaging claw 22b is bent to engage with the locking hole 6a. Then, the surface opposite to the surface on which the engaging claws 22b are provided comes into contact with the inner surface of the outer box 7, so that the engaging plate 22 is fixed to the unit main body 3.
Pressed to.

At this time, the release tape 23 is inserted into the gap between the unit main body 3 and the outer box 7 together with the engaging plate 22 through the opening 18, and at the time of engagement, through the engaging claw 22b through the opening 18.
The other end is pulled out to the outside of the lens-fitted film unit 2.

As described above, since the engaging plate 22 inserted from the opening 18 is pressed against the unit body 3 by the outer box 7, the engaging claw 22b is always engaged with the engaging hole 6a, as shown in FIG. As shown in B), the strap device 21
The attachment to the film unit with lens 2 is completed.

The lens-fitted photo film unit 2 having the strap device 21 attached thereto has a very good portability, and the lens-fitted photo film unit 2 is erroneously held by passing the strap device 21 through the hand during photographing. Even when the lens-fitted film unit 2 is released, the lens-fitted film unit 2 is prevented from falling to the ground.

Next, when the strap device 21 is detached from the lens-fitted film unit 2, the other end of the release tape 23 pulled out from the opening 18 to the outside of the lens-fitted film unit 2 is pulled in the detaching direction. Then, as shown in FIG. 4B, the release tape 23 bends the engaging claw 22b in the opposite direction of the bending direction against the spring property of the engaging claw 22b, and the engaging claw 22b and the locking hole 6a are formed. Disengage the. Then, if the release tape 23 is pulled as it is, the strap device 21 can be easily removed from the lens-fitted film unit 2.

At the time of this removal, the engagement claw 22b is released from the engagement with the engagement hole 6a only by pulling the release tape 23, so that the outer box 7 and the unit body 3 are not damaged. Absent. Further, the strap device 21 can be easily attached to and detached from the lens-fitted film unit 2 any number of times. Since the recess 22d is provided at the end of the engaging plate 22 and the end of the release tape 23 is adhered to the recess 22d, the friction generated during such repeated attachment and detachment causes
The release tape 23 is prevented from peeling from the end.

The strap device 21 can be used again when a new lens-fitted film unit is purchased. By repeatedly using the strap device 21 as described above, the cost of the film device with lens of the strap device 21 can be reduced.

In the above-described embodiment, the release tape 23 is attached from the concave portion 22d of the engaging plate 22 to the surface of the engaging claw 22b in the bending direction, but other than this,
For example, as shown in FIG. 5, a recess 32a may be provided at the end of the engagement plate 32 of the strap device 31, and the release tape 33 may be welded to the recess 32a. When the lens-fitted film unit is attached, the bent engaging claw 32b is attached.
As in the above-described embodiment, the strap device 31 can be easily attached to and detached from the lens-fitted film unit without damaging the outer-box unit body, by attaching the strap device 31 to the lens-fitted film unit. Become.

Further, in the above-mentioned embodiments, the engaging plate and the strap portion are different from each other in the strap device, but it is of course possible to integrally form the engaging plate and the strap portion. . For example, by using a flexible plastic material such as polypropylene to integrally form the engaging plate and the strap portion, the strap device can be manufactured at an extremely low cost.
Further, the strap device can be manufactured at a lower cost by integrally forming the engagement plate and the release tape using the plastic material such as polypropylene.

Further, in the above-mentioned embodiments, a box body is used as the exterior body for covering the unit body and pressing the engagement plate of the strap device, but other than this, for example, a band-shaped sheet material. The unit main body may be partially covered by using the above as an exterior body.

[0028]

As described above, according to the strap device of the present invention, the flexible strap portion that is held when the lens-fitted photo film unit is carried and the engaging plate that is connected to the strap portion are provided. The plywood is inserted between the unit body and the outer body through an opening formed in the outer body, and is engaged with a locking hole provided on the surface of the unit body while being pressed by the inner surface of the outer body. A thin tape-shaped release tape that is adhered to the engagement plate and that is released from the engagement hole and the engagement claw by being pulled to the engagement plate while the engagement claw is engaged with the engagement plate; Since it is provided, it is possible to provide a strap device that can be attached / detached to / from the lens-fitted film unit with one touch and can be repeatedly used at low cost.

Further, the strap device of the present invention enables the strap device to be easily removed from the lens-fitted film unit when the used lens-equipped film unit with the strap device is collected for reuse in the factory. As a result, the efficiency of the reuse work process can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory view of an engaging portion between a strap device of the present invention and a lens-fitted film unit.

FIG. 2 is a partially cutaway view showing a lens-fitted film unit to which the strap device embodying the present invention is attached.

FIG. 3 is an external perspective view of a strap device embodying the present invention.

FIG. 4 is a cross-sectional view of an engaging portion in a state in which the strap device of the present invention and the lens-fitted film unit are engaged with each other.

FIG. 5 is a second embodiment of the present invention.

[Explanation of symbols]

 2 Film unit with lens 3 Unit body 6a Locking hole 7 Outer box 18 Opening 21 Strap device 22 Engaging plate 22b Engaging claw 23 Release tape 29 Strap part

Claims (3)

[Claims] 1. A strap device to be attached to a lens-fitted film unit, comprising a unit main body having a shutter mechanism incorporated therein and preliminarily loaded with a photographic film, and an exterior body covering the surface of the unit main body. Of a flexible strap portion that is held when being carried, and an engagement plate that is connected to the strap portion. The engagement plate is inserted between the unit body and the exterior body through an opening formed in the exterior body. , An engaging claw that engages with a locking hole provided on the surface of the unit body while being pressed by the inner surface of the exterior body, and is fixed to the engaging plate, and the engaging claw engages with the locking hole A strap device, comprising: a thin tape-shaped release tape for releasing the engagement between the engagement hole and the engagement claw by pulling in the state. 2. The strap device according to claim 1, wherein one end of the release tape is fixed to an end portion of the engagement plate. 3. A clip portion, which is exposed to the outside of the exterior body and holds the vicinity of the opening of the exterior body, is integrally provided on the engagement plate in a state where the engagement plate is engaged with the unit body. The strap device according to claim 1 or 2, characterized in that