JP2001215662A - Film unit with waterproof lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a waterproof structure almost for a weather-proof level at a low cost without using an extra waterproof case. SOLUTION: The film unit with a lens is so structured that a unit main body 12 which has a photographic film cartridge and a photographing mechanism inside is covered with a waterproof exterior label 11. External covers 22 to 24 for the unit main body 11 have openings for exposing a photographic lens, a finder lens, a counter, and a protector for an electronic flash and a hole 30 unnecessary for photography. The hole 30 is hidden behind the exterior label 11. A gasket is interposed in the gap between the photographic lens, finder lens, counter, and protector, and the respective openings.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a waterproof water-resistant film unit with a lens.

[0002]

2. Description of the Related Art A lens-equipped film unit which is sold in a state in which a film is loaded in advance is simple and inexpensive in that the film can be taken out to a developing dealer without taking out the film after photographing. , Is widely used in general. By the way, when shooting under bad conditions such as light rain, there is a gap between the joint surface of the outer cover, between the finder window and the outer cover, between the winding knob and the opening that exposes it, etc. Not only does water enter the film unit and hinders the photographing mechanism and the like, but if it penetrates the built-in photographic film, the photographic performance is significantly reduced.

[0003] Therefore, a lens-fitted film unit that realizes a waterproof structure of about a waterproof type (JIS protection class 4) is desired. An underwater waterproof type (equivalent to JIS protection class 8) structure in which a film unit with a lens is covered with a waterproof case so that images can be taken underwater has been proposed in Japanese Patent Application Laid-Open No. H11-174561. . However, in this structure, the waterproof case that is placed over the outer cover of the lens-fitted film unit has a large size and is made of hard plastic, so it is difficult to carry it on land and it is difficult to use it on a waterproof case. Since the size of the provided operation unit is increased so that it can be easily operated underwater, it is difficult to operate on land.

Japanese Patent Application Laid-Open No. H11-194415 proposes a film unit with a lens which realizes a waterproof structure without using a waterproof case. This film unit with a lens has a structure in which a film cartridge is housed and a main body unit having a photographing mechanism is covered from the front and rear with a front cover and a rear cover. The front cover is formed by two-color molding of an elastic elastomer forming the outer layer and a transparent and hard plastic forming the inner layer. In addition, a step-like connecting projection made of only the elastomer is formed in the joint of the front cover, and a groove is formed in the joint of the rear cover all around. The fitting of the connecting projection and the groove ensures waterproofness of the joint of the outer cover.

[0005]

However, in the film unit with a lens described in the above-mentioned publication, since the front cover is molded in two colors, the cost is high. Also,
Since two-color molded covers made of different materials are used, it is necessary to separate them from conventional ones when recycling for the purpose of recycling, which is conventionally performed, and the recycling cost is high.

The present invention has been made in view of such circumstances, and realizes a waterproof structure similar to a waterproof type of life without using a waterproof case, and has an optimal structure in terms of recyclability. The purpose is to provide units at low cost.

[0007]

According to a first aspect of the present invention, there is provided a film unit with a lens.
A main body in which the photographic film is stored and to which the photographing mechanism is attached; an opening for covering the main body and exposing an operation member and an optical member of the components constituting the photographing mechanism to the outside; An outer cover provided with a hole excluding a necessary opening; a waterproof outer label attached to an outer surface of the outer cover so as to cover the hole and not to cover the operation member and the optical member; Waterproof means for closing a gap between the optical member and the opening in a watertight manner is provided.

[0008] In the film unit with the lens according to the second aspect, the optical member includes a photographing lens, a finder lens,
One of the film counter window and the strobe light emission window may be provided, and the operating member may be a wind-up knob also serving as a shutter button.

According to a third aspect of the present invention, in the film unit with the lens, the waterproof means is constituted by the sliding portion of the operating member and the packing inserted between the optical member and the opening.
In the film unit with a lens according to the fourth aspect, the outer cover is constituted by a front cover, a rear cover, and a bottom cover, and a mating surface of these covers has a waterproof structure.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Film unit 10 with lens
Is composed of an exterior label 11 and a unit main body 12, as shown in FIG. The exterior label 11 is a waterproof label seal, and is affixed to the unit main body 12 in a nori roll shape.

The unit main body 12 has a wind-up knob 13 also serving as a shutter button on the upper surface on the grip side, a film counter window 14 at approximately the center of the upper surface, a photographing window 15 at approximately the center of the front, and the photographing window 15 at the front and back. Viewfinder objective window 16
And a finder eyepiece window 17, a flash emission window 18 on the upper right side of the front, and a flash charging switch 19 provided below the flash emission window 18.

Winding knob 13 also serving as shutter button
Indicates that the entire contour of the dial portion 13a is
It is attached in a state where it is exposed on the upper surface of the. The film winding operation can be performed by rotating the winding knob 13 in the direction of arrow A shown in FIG. 1 around the rotating shaft 13b extending vertically, and the rotating shaft 13b is moved in the direction of arrow B shown in FIG. The release operation can be performed by pressing a portion 13b of the upper surface of the hoisting knob 13 close to the center of the unit main body 12 so as to fall down toward the center in the width direction.

As shown in FIG. 2, the outer cover of the unit body 12 includes a front cover 22, a rear cover 23, and a bottom cover 24. These covers 22 to 24
Molded with hard plastic material. Front cover 2
2 is provided with a protective wall 25 raised on the upper surface along the outer periphery of the winding knob 13. The protection wall 25 is cut away from the rear side to the right side so that the film winding operation and the film unit with lens leasing operation can be easily performed.

The exterior label 11 has a cosmetic print on its surface, and is attached in a band shape over the front, top, back, and bottom surfaces so that both ends overlap on the bottom surface of the unit body 12. The openings 26 are respectively formed at positions corresponding to the windows 14 to 17 arranged in the region where the exterior label 11 is stuck among the windows 14 to 18 by punching.
To 29 are formed. On the back of this exterior label 11,
Adhesive is applied.

The outer covers 22 to 24 are required for positioning in an automatic assembling machine, for inserting an inspection jig, and for molding and space, which are unavoidably required, and are used for lightening the unnecessary portions for photographing. Many holes 30 are provided. These holes 30 are closed by the exterior label 11.

The external appearance of the film unit with lens 10 is decorated by sticking the external label 11 thereon. At the same time, since a large number of holes 30 that do not need to be exposed to the outside are covered, it is possible to prevent foreign matters such as water, sand and dust from entering the inside of the unit body 12 from these. As a result, the used film unit with lens 10 is
Damage to components inside the unit body 12 is reduced, a good state is maintained, and recyclability is improved.

The unit body 12 is, as shown in FIG.
The front, top, left and right sides, and back of the main body 33 are covered with the front cover 22 and the rear cover 23, and the bottom is covered with the bottom cover 24.
It is a configuration covered with. A photo film is stored in the main body 33, and a photographing mechanism is attached to the photo film.

The front cover 22, the rear cover 23, and the bottom cover 24 are locked by detachable and waterproof locking means. The locking means includes a concave portion 35 and a convex portion 36. The recess 35 is provided in the front cover 22.
And a plurality of convex portions 36
Are provided so as to protrude in the joining direction from the joint between the rear cover 23 and the bottom cover 24. These recesses 35
The covers 22 to 24 are connected to each other by engaging the and the convex portions 36.

The recess 35 is formed in the front surface of the front cover 22 and the outer surface of the left and right side surfaces so as to be recessed one step, and the insertion side of the mating cover is open. The convex portion 36 is elastic and fits so as to overlap the concave portion 35 from the open side. As shown in FIGS. 4 and 5, locking claw 37 is formed in each of these recesses 35. Each projection 36 has an opening 38 that engages with the locking claw 37. The covers 22 to 24 are respectively connected by the engagement of the locking claws 37 with the edge of the opening 38. And
The opening 38 is closed from the inside by a one-step concave surface constituting the concave portion 35.

Conventionally, for example, the front cover has been provided with a locking claw on the inner wall at the front. This locking claw is undercut in mold molding. For this reason, a hole was required on the front surface of the front cover for releasing from the portion corresponding to the locking claw. However, in the present embodiment, the locking claws are not provided on the front surface of the front cover 22, and the other covers 23, 24 are not provided.
Since it is provided adjacent to the mating surface of the mold, a hole for releasing the mold is not required. For this reason, it is possible to prevent foreign substances such as water, sand, and dust from entering the inside of the unit main body 12.

On each mating surface of each of the covers 22 to 24, a convex rib 40 protruding in the locking direction on one surface and a groove 41 into which the rib 40 enters on the other surface.
Are formed over the entire circumference. Since the mating surfaces have a labyrinth structure by fitting these ribs 40 and grooves 41, it is possible to reliably prevent foreign matters such as water, sand, dust and the like from entering the inside of the unit main body 12. Further, in the present embodiment, the string-shaped packing 4
2, 43 are inserted. Thus, the packing 42 is pressed between the rib 40 and the groove 41 by the locking force of the locking means. For this reason, the unit main body 12 can be made airtight and watertight. In the present invention, it is not always necessary to use packing.

At the portion where the three mating surfaces of the front cover 22, the rear cover 23 and the bottom cover 24 meet, as shown in FIGS. 6 and 7, one end of the packing 42 inserted into the groove 42 of the rear cover 23. 42a is the groove 42 of the bottom cover 24
It is a direction that intersects the packing 43 that has entered. The packing 42 has such a length that both ends protrude from the groove 41 of the rear cover 23. The groove 42 of the bottom cover 24 is provided with a pool groove 41a for accommodating the one end 42a such that the one end 42a of the packing 42 intersects with the packing 43 in an overlapping state. Thereby, three covers 2
Waterproofing and dustproofing can be enhanced at the portions where the mating surfaces 2 to 24 meet.

The packing 43 inserted into the groove 41 of the bottom cover 24 is longer than the entire circumference of the groove 41. For this reason, as shown in FIG. 8, the groove 41 of the bottom cover 24 has a portion corresponding to a portion where both ends of the packing 43 overlap, and another end 4 so as to overlap the one end 43 a of the packing 43.
A pool groove 43b for accommodating 3b is formed.

As shown in FIG. 9, the main body 33 comprises a main body base 44, a photographic film cartridge 45, a photographing mechanism, and the like. The photographing mechanism includes a well-known photographing lens 46, a film winding mechanism, a film winding stopping mechanism,
It comprises a film counter mechanism, a finder optical system, a strobe unit 47 and the like.

A cartridge chamber 51 for accommodating a cartridge 50 is provided on one side of an aperture provided on the back side of the main body base 44, and an unexposed photographic film 52 is drawn out of the cartridge 50 and rolled on the other side. A film storage chamber 53 for storing in a form is provided. The back and bottom sides of the cartridge chamber 51 and the film storage chamber 53 are open. The opening on the back side is closed inside the contour of the rear cover 23 by attaching the rear cover 23 after the photo film cartridge 45 is loaded, and the openings on the bottom side are the bottom lid members 54 and 5.
Blocked by each of the five. Thus, the photo film 52 is stored in a light-tight manner.

The cartridge chamber 51 and the film storage chamber 53
As shown in detail in FIG. 10, a dark box 56 and a strobe unit 47 are mounted between the two. Dark box 5
A photographing opening is formed on the front surface of 6, and a lens receiving portion is formed so as to surround the photographing opening. Dark box 5
Numeral 6 keeps the space from the shooting aperture to the aperture light-tight. The taking lens 46 is inserted into the lens receiving portion from the front. The photographing lens 46 is exposed from a photographing window 15 provided on the front cover 22. A ring-shaped packing 58 is interposed between the inner wall edge of the imaging window 15 and a flange provided on the outer periphery of the imaging lens 46 over the entire circumference. The packing 58 closes a gap between the imaging window 15 and the imaging lens 46.

In the strobe light emission window 18 of the front cover 22,
Protector 60 made of transparent plastic material
Is attached from the inside. The protector 60 is provided with a flange all around. The front cover 22
A double-sided tape 61 is adhered to a surface facing the inner wall of the device. The double-sided tape 61 is adhered to an edge of the inner wall of the strobe light emission window 18 to close a gap between the protector 60 and the strobe light emission window 18.

A magnifying lens 65 made of a plastic material is attached to the film counter window 14 of the front cover 22 from the inside. The magnifying lens 65 is formed so as to be a convex lens. The magnifying lens 65 magnifies the display of the number-of-photographs display plate, which will be described in detail later, to the outside so as to be visually recognized. A flange is provided on the entire circumference of the magnifying lens 65. The flange has a double-sided tape 62 on the surface facing the inner wall of the front cover 22.
Is affixed. This double-sided tape 62 is adhered to the edge of the inner wall of the film counter window 14 and closes the gap between the magnifying lens 65 and the film counter window 14.

An objective lens 63 made of a plastic material is attached to the finder objective window 16 from the inside. The objective lens 63 forms a finder optical system, and a flange is provided around the entire periphery of the lens 63. A double-sided tape 64 is attached to the flange on the surface facing the inner wall of the front cover 22. The double-sided tape 64 is adhered to the edge of the inner wall of the finder objective window 16 and the objective lens 6
The gap between 3 and the finder objective window 16 is closed.

In the flash charging switch 19, a rotary shaft 66 is formed on the back side of the lever 19a exposed to the outside. The rotation shaft 66 is rotatably supported by a hole 67 provided in the front cover 22. The lever 19a rotates between a strobe charging position and a non-charging position. This lever 19a
A ring-shaped packing 68 is interposed between the hole 67 and the hole 67. The packing 68 closes a gap between the hole 67 and the rotating shaft 66. A retaining plate 69 is fixed to the rotating shaft 66 from behind the front cover 22. Lever 1 is attached to retaining plate 69.
A projection 69a for turning on the charging switch of the flash unit 47 when the flash unit 9a is rotated to the flash charging position is formed.

As shown in FIG. 11, an eyepiece 70 made of a plastic material is attached to the finder eyepiece window 17 provided in the rear cover 23 from the inside. The eyepiece 70 constitutes a finder optical system together with the objective lens 63. A flange is provided on the outer periphery of the eyepiece 70. A double-sided tape 71 is attached to the flange on the surface facing the inner wall of the rear cover 23. The double-sided tape 71 is attached to the edge of the inner wall of the finder eyepiece window 17 and closes the gap between the eyepiece lens 70 and the finder eyepiece window 17.

Above the cartridge chamber 30, a film winding mechanism is provided. As shown in FIG. 12, the film winding mechanism includes a winding knob 13 and a rotating plate 72 for stopping winding. Rotating plate 7 for stopping winding
2, a shaft 73 is formed on the lower surface. Its axis 73
Is inserted into an insertion hole provided on the upper surface of the cartridge chamber 30 and is engaged with the spool 50a of the cartridge 50. A hole 72b is formed on the upper surface of the rotating plate 72 for stopping the winding.
Are formed. In the hole 72b, the unit body 12
Is engaged with the rotating shaft 74 of the hoisting knob 13 that has entered the inside of the shaft. The hole 72 b has a tapered shape whose cross section in the depth direction expands toward the opening side so as to allow the rotation shaft 74 to tilt during the release operation.
B is engaged with the hoisting knob 13 in the rotation direction near the bottom of b.

On the outer periphery of the rotation stopping plate 72, a tooth row 7 is provided.
2a is formed. The check pawl 75 is engaged with the tooth row 72a. The check pawl 75 prevents rotation in the direction opposite to the film winding direction. Further, when the photo film is wound up by one frame length, the locking lever 7 constituting the film unwinding mechanism is provided on the tooth row 72a.
The 6 locking claws 76a are engaged. The locking claw 76 is provided with
a, the rotation in the film winding direction is prevented.

A thin disk 79 is fitted into the shaft 74 of the hoisting knob 13 at a portion that enters the inside of the unit body 12. The disc 79 has a cutout 79 a formed by cutting out a part of a donut shape.
a is pressed in a direction perpendicular to the shaft 74.
The shaft 74 has a groove 74a into which the disk 79 enters. The disk 79 presses the release plate 77 inside the unit main body 12 when the rotation shaft 74 of the hoist knob 13 falls down by the release operation. The notch 79a is provided so that the release plate 7
7 is formed with a width capable of pressing the same.

In the hoisting knob 13, a ring-shaped packing 78 is inserted into a shaft 74 between the dial portion 13a and the disk 79. The packing 78 is fitted into the notch 22a (see FIG. 10) of the front cover 22. Thereby, the winding knob 13 is rotatably supported between the front cover 22 and the rear cover 23. Therefore, gaps between the shaft 74 and the front cover 22 and the rear cover 23 can be closed in a watertight manner.

On the upper surface of the dark box 56, a shutter drive lever 81, a spring 84, a counter display plate 87, a spring 83, a locking lever 76, a cam member 86, etc., constituting a shutter mechanism, a film unwinding mechanism, a film counter mechanism and the like. And a sprocket 80 is installed on the back surface through the shaft 86a of the cam member 86. Each part is held by a top plate 88 incorporated in the upper part of the dark box 56. The top plate 88 closes the top of the frame member provided in the dark box 56. The objective lens 63 and the eyepiece 70 are held by the frame member and the top plate 88. The cam member 86 has, in order from the top,
A one-tooth gear 89, a stop cam 90, and a shutter charge cam 91 for moving the display board are provided integrally.

When the winding knob 13 is rotated in the film winding direction, the spool 50a is rotated to wind the photographed film 52 having been photographed into the cartridge 50. When the photo film 52 is wound up, the cam member 86 is rotated together with the sprocket 80 engaged with the perforation 52a. The claw portion 76b of the locking lever 76 slides on the stop cam 91 of the cam member 86. The stop cam 91 rotates the locking lever 76 from the stop position to the stop position against the urging of the spring 83 in conjunction with the film winding. When the photo film 52 is wound up by one frame length, the stop cam 90 rotates by a predetermined amount, and the groove 90a provided on the stop cam 90 faces the claw portion 76b. At this time, the claw 7
6b enters the groove 90a, and the locking lever 76
Rotates to the winding stop position by the urging of. Thus, rotation of the sprocket 80 is prevented. At the same time, the locking pawl 76a of the locking lever 76 is turned up
The rotation of the winding knob 13 in the film winding direction is prevented by meshing with the second tooth row 72a. The sprocket 8
By the rotation corresponding to one frame of 0, the one-tooth gear 89 advances the number-of-photographs display plate 87 by one step.

A projection 81a of a shutter drive lever 81 slides on the shutter charge cam 91. The shutter drive lever 81 is rotated by the rotation of the cam member 86 so that the projection 81a is pushed by the shutter charge cam 91, and rotates from the travel completion position toward the charge position against the urging force of the spring 84. Then, the shutter drive lever 81 is attached to the engagement protrusion 76 c protruding downward from the locking lever 76.
The engaging projection 81b protruding upward from above engages, and the shutter driving lever 81 is held at the charging position by the locking lever 76 at the winding stop position.

The release plate 77 is formed of an elastic material, and one end 77a is fixed on the top plate 88.
The other end 77b jumps out of the top plate 88 and enters under the disk 79. A pressing rod 77c is provided integrally on the lower surface of the other end 77b. Press rod 7
7c, when the other end 77b is pressed by the disk 79, presses the locking lever 76 at the locking position toward the winding completion position against the bias of the spring 83, and is at the charging position. The holding of the shutter drive lever 81 is released.
As a result, the shutter drive lever 81 is instantaneously rotated toward the travel completion position by the bias of the spring, and kicks off one end 82a of the shutter blade 82 during the rotation. As a result, the shutter blade 82 rotates about the axis 82b, and the opening / closing section 82d rotates behind the photographic lens so as to cross the photographic optical axis 46a to open the shutter opening. When the kicking of the shutter drive lever 81 is completed, the shutter blade 82 is returned by the bias of the spring 85 to close the shutter opening.

After the completion of the exposure, the locking lever 76 is held at the anti-winding position by the shutter drive lever 81 located at the traveling completion position. Thereby, the winding knob 13
Lock and sprocket 8 in the film winding direction
The rotation lock of 0 is released, and the next film winding operation is allowed. When the cam member 86 rotates in association with the winding of the photographic film 52, the projection 81a is pushed by the shutter charge cam 91, and the shutter drive lever 81 rotates toward the charge position. As a result, the holding of the locking lever 76 is released, and the locking lever 76 is released.
Is rotated toward the stop position by the bias of the spring 83. At this time, since the sprocket 80 is slightly rotating, the groove 90a of the stop cam 91 of the cam member 86 is also rotating, and therefore, the locking lever 76 is
b does not enter the groove 90 a but is held at the rotational position where it slides on the stop cam 91.

Hereinafter, the operation of the present embodiment having the above configuration will be described. First, a protector 60 is attached to the stroboscopic light emission window 18 of the front cover 22 from the back side with a double-sided tape 61. A magnifying lens 65 is attached to the film counter window 14 from the back surface of the front cover 22 with a double-sided tape 62 in a watertight manner. Further, a finder objective lens 63 is attached to the finder objective window 16 from the back surface by a double-sided tape 64. The strobe charging switch 19 passes the packing 68 through the rotary shaft 66, inserts the shaft 66 into the hole 67 of the front cover 22 from the front, and inserts the front cover 2 into the shaft 66 after insertion.
By attaching the retaining plate 69 from the back surface of the second 2, the front cover 22 is rotatably supported by the front cover 22.

The rear cover 23 has a viewfinder eyepiece window 17.
Finder objective lens 70 is double-sided tape 7
Attach by 1. Further, a packing 42 is inserted into the groove 41 on the joint surface joined to the front cover 22.

A strobe unit 47 and a photographing mechanism such as a shutter mechanism and a film winding stopping mechanism are mounted on a dark box 56 on the main body base 44.

The main body base 44 is then transported to a dark room where the photographic film cartridge 45 is loaded with its back side up. In this operation, the cartridge 50 is loaded into the cartridge chamber 45, and the roll film 52 drawn out of the cartridge 50 and wound into a roll is loaded into the film storage chamber 53, and then the bottom cover members 54 and 55 and the rear cover 23 are loaded. And attach. afterwards,
The anti-winding rotating plate 72 is mounted on the cartridge chamber 45. As a result, the shaft 73 of the rotation stopping plate 72
Engages with the spool 50a. As a result, the photo film cartridge 45 is light-tightly stored in the main body 33 and the rear cover 23.

After the loading operation of the photographic film cartridge 45 is completed, the photographic film cartridge 45 is transported to a bright room where the orientation of the main body base portion 44 is changed so that the front surface thereof faces upward. Thereafter, the photographing lens 46 and the packing 58 are sequentially attached from above the main body base 44.

Next, the work of mounting the winding knob 13 is performed. Before this operation, packing 78 is inserted into shaft 74 of hoisting knob 13 first, and then disk 79 is fitted into shaft 74 with packing 78 interposed between dial portion 13b. . The winding knob 13 having such a configuration is incorporated into the main body base 44 by inserting the rotating shaft 74 into the hole 72b of the rotating plate 72. Thereby, the assembly of the main body 33 is completed.

Next, the work of mounting the front cover 22 is performed.
In this operation, the front cover 22 is inserted from above the main body 33. Thereby, the concave portion 35 of the front cover 22 is fitted to the convex portion 36 of the rear cover 23, and the opening 38 of the convex portion 36 is engaged with the locking claw 37 of the concave portion 35. Thereby, the rear cover 23
The front cover 22 is connected to the front. At this time, the packing 42 is pressed between the groove 41 and the rib 40. Therefore, the mating surfaces of the covers 22 and 23 are made watertight. The packing 78 inserted into the shaft 74 of the hoisting knob 13
Fits into the notch 22a of the front cover 23 (see FIG. 10). Therefore, the shaft 74 of the hoisting knob 13 is supported in a watertight and rotatable manner because the gap between the notch 22a and the mating surface of the rear cover 23 is closed by the packing 78. Further, the gap between the photographing window 15 and the photographing lens 46 is made watertight by the packing 58.

Finally, the bottom cover 24 is attached. The packing 43 is inserted into the groove 41 in advance on the bottom cover 24 as well. The bottom cover 24 includes the front cover 22 and the rear cover 23.
And attached to the bottom. As a result, the convex portions 36 of the bottom cover 23 are fitted into the concave portions 35 of the front and rear covers 22 and 23, and the openings 38 of the convex portions 36 are engaged with the locking claws 37 of the concave portions 35, so that these covers 22 to 24 are joined together.
At this time, the rib 40 on the mating surface of the front and rear covers 22 and 23 enters the groove 41 of the bottom cover 24 and presses the packing 42 between the groove 41 and the rib 40, so that the front and rear covers 22, 23 and the bottom cover The joining surface with the joining member 24 is also joined in a watertight manner.

Further, in a portion where the mating surfaces of the covers 22 to 24 come close to each other, one end 42 a of the packing 42 inserted into the groove 41 of the rear cover 23 is attached to the groove 4 of the bottom cover 24.
1 is housed in the pool groove 44 formed. Thereby, one end 42a of the packing 42 is inserted into the groove 41 of the bottom cover 24.
And overlaps with the packing 43 accommodated in the cover, the portions where the mating surfaces of the covers 22 to 24 come close to each other are also joined in a watertight manner.

The unit body 1 thus assembled
2, after performing each function test, the exterior label 11 is attached. As a result, the holes 30 formed on the outer covers 22 to 24 and not required for photographing are closed.

In the above embodiment, the outer cover is constituted by the front, rear and bottom covers 22 to 24, but the present invention is not limited to this, and the outer cover may be constituted only by the front and rear covers. Good. In addition, although packing is inserted into the groove provided on one side of the joining surface with each cover, in the present invention, water-tight joining can be achieved only by uneven fitting,
The packing may be omitted. As the photo film cartridge 45, a well-known 135 type or IX240 type photo film cartridge having a film feeding function can be used.

The photographing window 15 and the finder window 1 of the above embodiment.
6, 17, the film counter window 14, and the strobe light emission window 19 correspond to the openings provided in the outer covers 22 to 24, respectively. In the above embodiment, a packing is inserted into the gap between the window and the opening to constitute the waterproofing means. However, the present invention is not limited to this. A labyrinth structure may be used. In the above embodiment, the photographing lens 46, the finder lenses 63 and 70, and the protector 60 are optical members that need to be exposed to the outside. As a waterproofing means for these optical members, a transparent sheet is provided in the openings 26 to 29 of the outer label 11 instead of forming a labyrinth structure between the optical member and the waterproofing means, and the waterproofing means is also constituted by covering with these transparent sheets. Can be.

[0053]

As described above, in the film unit with the waterproof lens according to the present invention, the waterproof exterior label covering the hole excluding the opening required for photographing, the operation member and the optical member not covered with the exterior label, are provided. Since there is provided a waterproof means for making the gap between the opening and the opening exposed watertight, a waterproof structure can be achieved at low cost without providing a separate waterproof case. In addition, in the aspect of recycling, there is no need to newly sort each material as compared with those described in the related art, so that the recycling cost is reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the appearance of a film unit with a lens according to the present invention.

FIG. 2 is a perspective view showing the appearance of a waterproof label and a unit main body.

FIG. 3 is an exploded perspective view illustrating a configuration of an outer cover of the unit body.

FIG. 4 is a cross-sectional view of a main part showing a joint surface between a front cover and a rear cover.

FIG. 5 is a cross-sectional view of a main part showing a joint surface between a rear cover and a bottom cover.

FIG. 6 is a perspective view showing a main part of a joining surface where seams of a front cover, a rear cover, and a bottom cover come close to each other;

FIG. 7 is a cross-sectional view of a main part showing a joint surface where joints between the front cover, the rear cover, and the bottom cover come close to each other.

FIG. 8 is a perspective view of an essential part showing a pool groove provided in a groove of a bottom cover.

FIG. 9 is an exploded perspective view of a unit main body.

FIG. 10 is an exploded perspective view of the unit main body, showing a main part in an enlarged manner.

FIG. 11 is a perspective view showing a rear cover.

FIG. 12 is an explanatory view showing main parts such as a film winding mechanism, a film winding stopping mechanism, and a shutter mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Film unit with a lens 11 Exterior label 12 Unit main body 22 Front cover 23 Rear cover 24 Bottom cover 40 Rib 41 Groove 41a Reservoir groove 42, 43 Packing

Claims (4)

[Claims] 1. A main body to which a photo film is stored and to which a photographing mechanism is attached, and an opening for covering the main body and exposing an operation member and an optical member of components constituting the photographing mechanism to the outside. An outer cover provided with a hole excluding an opening necessary for photographing; and a waterproof exterior label attached to an outer surface of the outer cover so as to cover the hole and not to cover the operation member and the optical member. And a waterproof unit for closing a gap between the operation member and the optical member and the opening in a watertight manner. 2. The optical device according to claim 1, wherein the optical member is any one of a photographing lens, a finder lens, a film counter window, and a strobe light emitting window, and the operating member is a winding knob also serving as a shutter button. The lens-fitted film unit according to claim 1. 3. The lens-fitted film unit according to claim 1, wherein the waterproofing means is a packing inserted between the sliding portion of the operating member and the optical member and the opening. 4. The outer cover includes a front cover and a rear cover that cover the main body from front and rear, and a bottom cover that covers the bottom of the main body, and a mating surface between the covers has a waterproof structure. The lens-fitted film unit according to any one of claims 1 to 3, wherein: