JPH07261252A - Film unit with lens - Google Patents

Abstract

PURPOSE:To provide a film unit with a lens incorporating a motor in a wiring method capable of making assembling and recycling easy. CONSTITUTION:On the rear surface of a front cover 19, conductive surfaces 72, 74, 74a and 76 composed of a sheet metal are stuck. When the cover 19 is fitted to a main body base part, a contact part 44b projected forward from a winding unit and the contact part, 71c of a switch are press-fixed to the conductive surface 72, the contact part 73b of the switch is press-fixed to the conductive surface 74 and a positive contact part 80a formed on a positive armature for a battery is press-fixed to the conductive surface 74a as well. Then, the contact part 43b of the winding unit, the contact part 75b of the switch and a negative contact part 81a formed on a negative armature for the battery are press-fixed to the conductive surface 76, to wire a circuit for the winding unit.

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, and more particularly to a lens-fitted film unit in which a film is wound by a motor.

[0002]

2. Description of the Related Art Conventionally, a film unit with a lens (trade name "Sharp Run Flash", which is inexpensive and easily available so that a photograph can be taken even when the camera is not carried.
Etc.) are also provided by the applicant. This lens-fitted film unit is an international standard (ISO 1007-197) in addition to a photographing mechanism such as a photographing lens and a shutter mechanism.
It has a built-in film with a patrone specified in (9th edition), and users who purchased this can easily enjoy photography, and after shooting, without taking out the film already taken, The lens-fitted photo film unit can be sent to the photofinishing shop as it is, and there is no need to perform troublesome operations such as rewinding the film or taking out the cartridge.

The lens-fitted photo film unit after the photo film is taken out at the photofinishing shop is collected by the manufacturer, disassembled, and recycled in various forms. Some parts, such as the exposure unit and strobe unit, etc., in which the shutter mechanism and the film winding mechanism are incorporated,
Parts that cannot be reused after being subjected to various functional tests are melted, pelletized, and reused as raw materials.

By the way, in the lens-fitted film unit, the winding knob is rotated to feed the film one frame at a time, and the shutter is charged by moving the film during this time. Therefore, the winding knob is rotated for each photographing. Unless you operate it, you cannot take the next picture. Therefore, there is a case where the operator forgets the film winding operation after shooting and sometimes misses a photo opportunity. In order to prevent such a failure, a motor may be built in like a general compact camera so that the film is automatically wound up after shutter release. In such a compact camera, the motor is housed in the film take-up shaft in order to miniaturize the camera body, and the motor is not removed from the camera except during repair.

As described above, the lens-fitted photo film unit is characterized in that it is inexpensive, and therefore, when a motor is built in, it must be easy to assemble and have good manufacturing efficiency. Further, since the lens-fitted film unit is collected and recycled after the photographing is completed, it is desirable that the built-in motor can be reused. Therefore, it is also necessary that the motor can be easily and quickly removed for proper recycling.

[0006]

However, when the motor is built in the lens-fitted photo film unit, the power supply and the motor and the switch for controlling the operation timing of these must be wired, and this wiring is required. When using the lead wire and soldering, a compact lens-fitted film unit does not have enough room to draw the lead wire inside, and it also takes time to assemble and disassemble and deteriorates recyclability.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a lens-fitted film unit having a built-in motor by a wiring method that is easy to assemble and easy to recycle.

[0008]

In order to solve the above-mentioned problems, the invention according to claim 1 makes a pair of contact points for wiring project from a contact piece for a motor and a battery of a winding unit, respectively. The circuit for the winding unit is wired by bringing the contact portion into contact with a plurality of conductive surfaces formed on the back surface of the front cover.

According to a second aspect of the present invention, a switch which closes the circuit at the time of shutter release and opens the circuit at the end of one frame winding is incorporated in the front surface of the main body base, and this switch is provided through a contact portion projected to the front surface side. It is brought into contact with the conductive surface of the front cover.

Further, according to the third aspect of the present invention, elasticity is imparted to the contact portion projecting from the contact piece for the winding unit, the switch, and the battery toward the front side, and the contact portion is pressed against the conductive surface of the front cover. It was done.

[0011]

The lens-fitted film unit is assembled by a motor that rotates a spool to wind a film that has been photographed into a film cartridge, and a switch that rotates the motor at the time of shutter release and stops the rotation at the end of one frame. A pair of contact pieces for holding a battery serving as a power source of the motor are attached to the front side of the main body base, and a front cover is attached to the front side of the main body base so as to cover them. From the motor and switch of the hoisting unit, and the pair of contact pieces, contact points for wiring are projected toward the front side, and these contact points should contact a plurality of conductive surfaces formed on the back surface of the front cover. Wiring of the circuit of the winding unit is performed by. Note that elasticity is imparted to the contact portion and the contact surface is pressure-bonded to the conductive surface, so that wiring is surely performed and contact resistance is reduced.

[0012]

FIG. 2 shows the external appearance of a lens-fitted film unit according to the present invention. The lens-fitted film unit 2 is composed of a unit main body 3 having a built-in photographing mechanism and the like and an outer case 4 accommodating the unit main body 3. On the surface of the outer case 4, a description such as how to use the lens-fitted film unit 2 is printed. The strobe light emitting section 5, the shutter button 6, the main switch 7, the number of shots display panel 8, the viewfinder 9, the shooting lens. 10, holes for exposing the strobe charging switch 11 and the like to the outside are provided. In addition, in the vicinity of the main switch 7 which is the power switch of the hoisting unit incorporated in the unit body 3, “ON” and “OFF” are shown to indicate the ON and OFF positions.
Is printed. Below the shutter button 6,
The grip portion 12 protruding to the front side is formed,
At the time of shooting, the user grips the grip portion 12 and shoots.

As shown in FIG. 3, the unit body 3 includes a body base 13, an exposure unit 14, a strobe unit 15,
Battery 16, winding unit 17, switch 18, front cover 19 and rear cover 20, and film 21 with patrone
And are detachably attached by claw engagement.

The main body base 13 has a cartridge storage chamber 24 for storing the cartridge 21a on both sides of the exposure opening 23 arranged on the optical axis 22, and a film roll 21c formed by winding the film 21b. A roll chamber 25 is formed. The front surface of the outer wall of the cartridge storage chamber 24 has a shape projecting forward from the front surface of the outer wall of the film roll chamber 25. An aperture that defines the exposure range of the film 21b is formed on the back side of the main body base 13.

As shown in FIG. 4, the cartridge storage room 24
A winding unit storage chamber 27 for storing the winding unit 17 is formed on the side of the. Hoisting unit 17
Is inserted into the winding unit storage chamber 27 from above or from the front and then pushed toward the cartridge storage chamber 24 side so that it is engaged with and attached to the engaging claws 28a to 28d provided on the side surface of the cartridge storage chamber 24. To be Also,
On the side surface of the cartridge storage room 24, in addition to the engaging claws, the projection 2
9a and a pin 29b are provided in a projecting manner, and as shown in FIG.
The hoisting unit 17 is positioned by being inserted into the groove 30a and the hole 30b formed in the.

As shown in FIG. 6, the winding unit 17 includes a motor 31 as a drive source for film winding, a gear train 32 for decelerating and transmitting the rotation of the motor 31, and a holding frame 33 for holding them. The top plate 34 supports the gear train 32 from above.

The holding frame 33 has an upper holding plate 35 on top.
However, a lower holding plate 36 is formed in the lower portion, and these holding plates 35, 36 are connected by a connecting portion 37 having elasticity. The motor 31 is a low-priced motor used as a power source for a model or the like, and as shown in the drawing, the holding frame 3
The rotating shaft 31a is inserted into the hole 38 formed in the upper holding plate 35 from below in a state where 3 is deformed. This allows
The head 39 of the motor 31 is inserted into a recess formed in the lower surface of the upper holding plate 35.

When the holding frame 33 is no longer deformed, the motor 31
The projection 41 (see FIG. 5) formed on the lower portion of the lower holding plate 36 is inserted into the hole 36 a of the same shape formed on the lower holding plate 36. In this way, the holding frame 33 is deformed by the connecting portion 37, and the motor 31 is sandwiched between the upper holding plate 35 and the lower holding plate 36. Therefore, the mounting and removal of the motor 31 can be performed easily and quickly. . In addition, the protrusion 41 of the motor 31
The motor 31 does not shift in the rotation direction due to the fitting of the hole 31a with the hole 36a.

As shown in FIG. 5, the lower holding plate 36 of the holding frame 33 has contact pieces 31b and 31c for wiring the motor 31.
Plate 4 for exposing the front side of the unit body 3
3,44 are attached. This extension plate 43,44
The contact portions 43a and 44a that come into contact with the contact pieces 31b and 31c of the motor 31 and the contact portions 43b and 44b that are integrally formed with the contact portions 43a and 44a and are exposed to the front surface side of the unit body 3 are formed on the front surface of the unit body 3. Has been done.

The extension plates 43 and 44 are attached to the lower holding plate 36 by inserting the contact portions 43a and 44a into the holes 45a and 45b formed in the lower surface of the lower holding plate 36. Then, as shown in FIG. 6, the contact portions 43a,
44a is exposed at the lower part of the connecting portion 37 and faces the contact pieces 31b and 31c of the motor 31, and the contact portions 43b and 44b.
Is arranged in front of the surface 36b of the lower holding plate 36. The contact portions 43a, 43b, 44a, 44b are bent in an arc shape to provide elasticity, and the contact piece 3 of the motor 31 is provided.
It is adapted to be pressure-bonded to 1b, 31c and a conductive surface described later.

The rotating shaft 31a of the motor 31 inserted into the hole 38 of the upper holding plate 35 is projected from the upper surface of the upper holding plate 35, and the gear 47 is attached. Further, gears 48, 49, 50, 51, 52 are rotatably attached to the upper surface of the upper holding plate 35 so as to mesh with each other. Each of these gears 48 to 52 has two spur gears formed on the upper and lower sides, and when these gears are meshed with each other, the rotation of the motor 31 is decelerated to increase the torque.

On the top plate 34, two engaging claws 53 projecting downward are formed, which are attached to the holding frame 33 by engaging with the upper holding plate 35. Further, at this time, since the upper parts of the gears 48 to 50 and the upper part of the shaft formed on the upper holding plate 35 are inserted into the five holes 54 formed in the top plate 34, the shafts of the gears 48 to 52 are formed. The distance can be maintained and the rotation of the motor 31 can be reliably transmitted.

As shown in FIG. 4, the cartridge storage room 24
A winding gear 56 is rotatably attached to the upper part of the. A bearing opening 57 is formed on the upper surface of the cartridge storage chamber 24, and the hoisting gear 56 is formed in the bearing opening 57.
The drive shaft 58 formed on the lower surface of the is inserted. Drive shaft 5
A tooth row 58a that meshes with the spool 21d (see FIG. 3) of the cartridge 21a is formed at the end of 8, and the spool 21d is rotated by the rotation of the winding gear 56 so that the film 21b already photographed in the cartridge 21a. Is rolled up.

A shaft 59 is formed on the upper surface of the winding gear 56. The shaft 59 is inserted into a hole 60 formed in the top plate 34 when the winding unit 17 is attached to the main body base 13. The winding gear 56 meshes with the lower gear 52a of the gear 52 of the winding unit 17,
The axial distance between the gear 52 and the winding gear 56 is kept constant.

A boss 61 is formed on the upper surface of the cartridge storage chamber 24 in addition to the bearing opening 57. This boss 6
A switching lever 62 is rotatably inserted into the device 1. The switching lever 62 is provided with a shaft portion 63 to be inserted into the boss 61, an elongated hole-shaped engaging portion 64 and a protruding portion 65, and the engaging portion 64 is assembled to the exposure unit 14. A pin 67 protruding downward from the locking lever 66 is inserted, and an engaging member 68 forming a part of the switch 18 is brought into contact with the protruding portion 65.

As shown in FIGS. 4 and 7, the switch 18
Is a resin holder 70 to which three metal contact pieces are attached while being insulated from each other. The holder 70 is engaged with an engaging claw 24a formed on a side wall of the cartridge storage chamber 24 to be attached to the main body. It is attached to the base 13.

Of the three contact pieces, the contact portion 71a bent in an arc shape is formed at the upper end of the first contact piece 71 arranged at the center.
Is formed, and a protruding piece 71b protruding upward from the side is formed. The above-mentioned engaging member 68 is attached to the tip of the protruding piece 71b. The engaging member 68 is made of resin and is formed into a cylindrical shape. When the switching lever 62 is rotated counterclockwise in FIG. 4, the engaging member 68 is pressed to the rear surface side. At this time, the first contact piece 71 is moved to the rear surface side. Transform it. Further, a contact portion 71c which is exposed on the front surface through the inside of the holder 70 is formed at the other end of the first contact piece 71. This contact part 71c
Has a circular arc shape and is provided with elasticity, and is pressed against the conductive surface 72 formed on the back surface of the front cover 19.

A second contact piece 73 is provided on the front side of the first contact piece 71.
Are arranged. From the side of the second contact piece 73, a protruding piece 73a protruding downward is formed, and the lower end is formed in an arc shape toward the first contact piece 71 side. Further, a contact portion 73b which is exposed on the front surface through the inside of the holder 70 is formed at the other end of the second contact piece 73.
The contact portion 73b is formed in an arc shape and is provided with elasticity, and is pressed against a conductive surface 74 formed on the back surface of the front cover 19.

On the rear surface side of the first contact piece 71, a third contact piece 75 having an arc-shaped contact portion 75a formed at its tip is arranged. Further, a contact portion 75b which is exposed on the front surface through the inside of the holder 70 is formed at the other end of the third contact piece 75. The contact portion 75b is formed in an arc shape and is given elasticity, and the conductive surface 7 formed on the back surface of the front cover 19 is formed.
It is crimped to 6.

The conductive surfaces 72, 74, 76 are thin iron plates adhered to the back surface of the front cover 19, and are arranged as shown by the broken lines in FIG. The conductive surface 72 is L-shaped, and the contact portion 71c of the switch 18 and the contact portion 44b of the winding unit 17 are crimped to both ends thereof. The contact portion 73b of the switch 18 is crimped to one end of the conductive surface 74, and the other end is provided up to an opening 78 formed in the lower front surface of the front cover 19. Further, the positive side contact portion 80a (FIG. 3) formed on the positive side contact piece 80 for the battery 16 attached to the strobe unit 15 with the opening 78 interposed therebetween.
A conductive surface 74a is formed by crimping (see reference numeral), and the main switch 7 is arranged between the conductive surfaces 74 and 74a by utilizing the opening 78. On the conductive surface 76, the contact portion 75b of the switch 18, the negative contact portion 81a formed on the negative contact piece 81 attached to the strobe unit 15, and the contact portion 75b of the winding unit 17 are pressure-bonded.

As shown in FIG. 3, a contact plate 83 constituting the main switch 7 is attached to the opening 78 of the front cover 19 from the rear side, and an operating member 84 is attached from the front side. In FIG. 8 showing a cross section of the main switch 7, a contact plate 83 is a plate member 83 made of resin.
The cross section is T-shaped by a and a pin 83b protruding from the plate member 83a, and a metal contact piece 85 having a hole into which the pin 83b is inserted is attached to the plate member 83a. . The front cover 19 is inserted into the opening 78.
An operation member 84 that is actually operated by the user is locked to the pin 83b that protrudes from the front surface of the.

The main switch 7 is in the off state in FIG.
As shown in (A), when the main switch 7 is set to the “OFF” side (see FIG. 2), the contact plate 83
Pin 83b of the contact plate 83 is in contact with the left side wall of the opening 78, and the metal contact piece 85 of the contact plate 83 is contacted only with the conductive surface 74. Further, as shown in FIG. 7B, when the main switch 7 is in the ON state, the pin 83b of the contact plate 83
Is in contact with the right side wall of the opening 78, and the metal contact piece 85 is in contact with the conductive surfaces 74 and 74a.

As described above, the contact unit, the conductive surface, and the main switch are wired to form a winding unit circuit 87 as shown in FIG. According to this circuit, when the contact portion 71a of the first contact piece 71 and the second contact piece 73 come into contact with each other while the main switch 7 is turned on, the hoisting unit circuit 87 is closed and the motor 31 is turned off. Is rotated. Further, the contact portion 75a of the first contact piece 71 and the third contact piece 75
When and are brought into contact with each other, the motor 31 is short-circuited and the rotation is braked. Further, when the main switch 7 is off, the motor 31 is not rotated even if the first contact piece 71 and the second contact piece 73 come into contact with each other.

In FIG. 9 showing the exposure unit 14 in an exploded view, the optical axis 22 is provided on the base portion 90 of the exposure unit 14.
The exposure opening 91 provided in the upper front is formed,
On the upper part, a known shutter mechanism, a film number display plate 8, which constitutes a film winding mechanism, a locking lever 66, a shutter drive lever 92, a spring 93, and a rotating member 94 are rotatably attached.

A driven sprocket 95 arranged in the base portion 90 is engaged with the lower end of the rotating member 94, and the rotation of the driven sprocket 95 is transmitted. The driven sprocket 95 is meshed with a perforation formed outside the effective photographing range of the film 21b (see FIG. 3), and the winding gear 56 rotates to rotate the spool 21 of the cartridge 21a.
When d is rotated and the film 21b is transferred by the length of one frame, it is rotated once.

The end of the spring 93 is the shutter drive lever 9
2 is engaged with the locking lever 66, and biases the shutter drive lever 92 counterclockwise and the locking lever 66 clockwise. The shutter driving lever 92 and the locking lever 66 are in contact with the outer periphery of the rotating member 94, and one rotation of the rotating member 94 causes the shutter driving lever 92 to rotate clockwise and move to the shutter charge position. .
The locking lever 66 bites into the rotating member 94 to lock the rotation of the driven sprocket 95. Further, at this time, the locking lever 66 is slightly rotated clockwise, and the shutter drive lever 92 is engaged and locked at the charge position. Furthermore,
The rotating member 94 meshes with the outer circumference of the number-of-photos display plate 8 and advances the number-of-shoots display plate 8 by one scale when it makes one rotation.

When the locking lever 66 is rotated clockwise, the pin 67 of the locking lever 66 causes the switching lever 62 to rotate counterclockwise in FIG. As a result, the engaging member 68 of the first contact piece 71 is pressed toward the back side, and the first contact piece 71 is brought into contact with the third contact piece 75 as shown in FIG. 7.

When the shutter button 6 is pressed, the vertical piece 66a of the locking lever 66 is pressed, and the locking lever 66 is slightly rotated counterclockwise. By this rotation, the engagement between the locking lever 66 and the shutter drive lever 92 is released, the shutter drive lever 92 is rotated counterclockwise by the bias of the spring 93, and the kicking arm 92a of the shutter drive lever 92 will be described later. The shutter blade 97 to be kicked is kicked off.

When the locking lever 66 is rotated counterclockwise, the pressing of the switching lever 62 by the pin 67 is released, and the first contact piece 71 is elastically moved to the second position.
Return to the contact piece 73 side. At this time, if the shutter button 6 is not pressed, the first contact piece 71 and the second contact piece 7
3 are brought into contact with each other and the motor 31 is rotated.

A shutter blade 97 having a crank-shaped cross section is rotatably attached to the front surface of the base portion 90, and the exposure opening 91 provided on the optical axis 22 is shielded by the bias of a spring 98. And a position retracted from the exposure opening 91 by the kicking of the shutter drive lever 92. A shutter cover 99 having a diaphragm aperture 99a and a lens barrel 99b formed on the optical axis 22 is attached to the front surface of the shutter blade 97. In the lens barrel 99b, a front lens 86a and a rear lens 8 which compose the taking lens 10 are provided.
6b and the spacer 86c are inserted, and finally the lens cover 100 is covered.

A concave holding frame 101 is integrally formed on the upper right side of the base portion 90. An objective lens 102 and an eyepiece lens 103 are inserted into the holding frame 101,
The reverse Galileo type finder 9 is configured. The finder 9 is arranged between the finder objective window 9a of the front cover 19 and the finder eyepiece window 9b of the rear cover 20 shown in FIG.

A film supporting surface 105 is formed on the rear cover 20 at a position facing the aperture. An eyepiece side finder window 9b is provided on the upper portion of the film supporting surface 105.
Is formed, and framing is performed through this window at the time of shooting. Further, pull-top type lids 20a and 20b for covering the bottom surfaces of the cartridge storage chamber 24 and the film roll chamber 25 are provided on the bottom surface side of the rear cover 20, respectively. The lid 20a serves as a take-out lid when taking out the cartridge 21a containing the exposed film 21b.

The front cover 19 has an opening 10a for exposing the taking lens 10 to the outside on the optical axis 22, a strobe opening 107 for exposing the light emitting portion 5 of the strobe unit 15 to the outside, and an objective side finder. Strobe charging switch 1 for charging window 9a and strobe unit 15
1 and an opening 108 exposing the number-of-photographed display plate 8 are formed. When the strobe charge switch 11 is pressed,
The charging contact piece 110 arranged at the back is brought into contact with the substrate 15a of the strobe unit 15, and the contact 15 on the substrate 15a is contacted.
The b and 15c are short-circuited to charge the strobe circuit.

The shutter button 6 has a cylindrical shape as shown in FIG. 10, and a flange 6a and a pressing pin 6b protruding downward are formed on the lower portion. Front cover 1
The upper plate 111 of 9 has an opening 112 for a shutter button.
The projection 113 surrounding the opening 112 is formed on the lower surface, and the shutter button 6 is inserted into the opening 112 from below. However, since the projection 113 and the flange 6a come into contact with each other, the shutter button 6 moves upward. It does not fall out.

Below the shutter button 6, the front cover 1
An intermediate lever 115, which is rotatably attached to a pin 114 protruding toward the back side, is arranged on the back surface of the plate 9. The intermediate lever 115 is integrally formed with a pressing lever 116 protruding downward on the tip side, and an engaging portion 117 protruding upward is formed in the intermediate portion. A pressing piece 116a is formed at the tip of the pressing lever 116 toward the rear side, and the pressing piece 116a abuts on the protruding piece 73a formed on the second contact piece 73 of the switch 18 described above and the rear side. It has been transformed into.

Further, the front cover 19 has a lock release lever 1
18 is integrally formed. This lock release lever 11
8 is given elasticity by a connecting portion 118a integrated with the upper plate 111, and the vertical piece 66a of the locking lever 66 is provided.
A pressing portion 118b that presses and a claw portion 118c that engages with the engaging portion 117 are formed.

When the shutter button 6 is pressed, the pressing pin 6b formed under the shutter button 6 presses the intermediate lever 115 downward. The intermediate lever 115 pressed by the shutter button 6 is rotated clockwise around the pin 114. As a result, the claw portion 118c engaged with the engaging portion 117 is pushed downward, and the locking release lever 118 is pushed down counterclockwise around the connecting portion 118a with the front cover 19. When the lock release lever 118 is pushed down, the pressing portion 118b pushes the vertical piece 66a of the lock lever 66 to rotate the lock lever 66 slightly counterclockwise.
As a result, the shutter release by the shutter drive lever 92 is performed as described above.

Since the pressing lever 116 formed on the intermediate lever 115 is also moved downward while the shutter button 6 is being pressed, the pressing piece 116a of the pressing lever 116 and the protruding piece of the second contact piece 73. The contact with 73a is released, and the second contact piece 73 returns in a direction away from the first contact piece 71 by its elasticity. As a result, the first contact piece 71 and the second contact piece 73 do not come into contact with each other while the shutter button 6 is being pressed, so that the film is not wound. Further, when the pressing of the shutter button 6 is released, the pressing lever 116 moves upward, but the second contact piece 73
Since the lower end of the protruding piece 73a is arcuate, the contact between the pressing lever 116 and the protruding piece 73a is smoothly performed.

As shown in FIG. 3, the strobe unit 15
As described above, the battery contact piece 80 with which the positive terminal 16a of the battery 16 abuts and the battery contact piece 81 with which the negative terminal 16b abuts are attached to the lower portion of the substrate 15a. Each of these battery contact pieces 80, 81 is formed with a positive side contact portion 80a that abuts on the conductive surface 74a and a negative side contact portion 81a that abuts on the conductive surface 76. Since the plus side contact portion 80a and the minus contact portion 81a are bent in an arc shape and have elasticity, the conductive surfaces 74a and 76 are crimped by utilizing this elasticity.

Next, the operation of the above embodiment will be described.
In the lens-fitted film unit 2, the main body base 13 made of plastic is conveyed on the assembly line, and during the conveyance, the winding gear 56, the exposure unit 14 and the winding unit 1 assembled on another assembly line.
7, internal mechanisms such as the switch 18, the flash unit 15 and the like are assembled.

Thereafter, the front cover 19 is attached to the front surface side of the main body base 13, and the conductive surfaces 72, 74, 74a, 76 formed on the back surface of the front cover 19 are crimped to the respective contact portions. The conductive surface 72 is crimped to the contact portion 44b of the winding unit 17 and the contact portion 71c of the switch 18. The conductive surface 74 is crimped to the contact portion 73b of the switch 18. The conductive surface 74a is crimped to the positive side contact portion 80a of the strobe unit 15. The conductive surface 76 has a contact portion 43b of the winding unit 17, a contact portion 75b of the switch 18, and a minus side contact portion 81 of the strobe unit 15.
It is crimped to a. Then, a film 21 with a cartridge is loaded from the back side to the main body base 13 in the dark room, and the rear cover 20 is assembled.

Thereafter, the unit main body 3 in which the battery 16 is loaded and completed is subjected to the inspection of the shutter mechanism and the film winding inspection. The passed unit body 3 is covered with the paper box 4 to form the lens-fitted film unit 2.

The lens-fitted film unit 2 completed as shown in FIG. 2 is sold in a moisture-proof bag that shields light and moisture, and the shutter button 6 is pressed from above the moisture-proof bag during transportation. Then, the shutter is released and the film is wasted. In order to prevent this, the shutter button 6 is pressed with the main switch 7 set to the "OFF" side in FIG. In this state, as shown in FIG. 8A, the pin 83 b of the contact plate 83 that constitutes the main switch 7 has the opening 7 of the front cover 19.
8, the metal piece 85 of the contact plate 83 is in contact with only the conductive surface 74.
The circuit 87 for the winding unit shown in FIG.
The rotation of 1 is prevented.

A user who has purchased the lens-fitted film unit 2 can remove the lens-fitted film unit 2 from the moisture-proof bag.
The main switch 7 is taken out, and the main switch 7 is slid to the “ON” side in accordance with the explanation written on the moisture-proof bag or outer cover. Then, as shown in FIG. 8B, since the metal piece 85 of the contact plate 83 is brought into contact with the conductive surface 74 and the conductive sound 74a,
The winding unit circuit 87 shown in FIG. 7 is closed.

At this time, in FIG. 4, the switching lever 62 is released from the pressing of the locking lever 66 by the pin 67, so that the first contact piece 71 is returned to the second contact piece 73 side. Since the second contact piece 73 is pressed to the back side by the pressing lever 116 shown in FIG.
The contact piece 71 and the second contact piece 73 are brought into contact with each other to rotate the motor 31.

As shown in FIG. 6, the rotary shaft 3 of the motor 31.
1a is rotated counterclockwise, and this rotation is decelerated by the gear train 32 to increase the torque. As shown in FIG. 4, the reduced rotation of the motor 31 is transmitted to the hoisting gear 56 by the lower gear 52a of the gear 52, and the hoisting gear 56 is rotated counterclockwise. The spool 21d (see FIG. 3) of the cartridge 21a meshed with the tooth row 58a of the drive shaft 58 is also rotated counterclockwise by the rotation of the winding gear 56. By rotating the spool 21d, the film 2
1b is wound up in the cartridge 21a, but at this time, the driven sprocket 95 shown in FIG. 9 is rotated counterclockwise by meshing with the perforation of the film 21b.

The rotation of the driven sprocket 95 causes the rotating member 94 attached to the driven sprocket 95 to rotate in the same direction. The rotation of the rotating member 94 causes the shutter drive lever 92 to rotate clockwise against the bias of the spring 93 and move to the charge position. Also, the locking lever 6
6 bites into the rotating member 94 to lock the rotation of the driven sprocket 95. At this time, the locking lever 66
Is slightly rotated in the clockwise direction, the locking lever 66 and the shutter drive lever 92 are engaged, and the shutter is charged.

Further, as shown in FIG. 4, the switching lever 62 whose engaging portion 64 is pushed by the pin 67 by the clockwise rotation of the locking lever 66 is rotated counterclockwise. As a result, the projecting portion 65 presses the engaging member 68 of the first contact piece 71 to the back side, deforms the first contact piece 71, and contacts the contact portion 75a of the third contact piece 75 as shown in FIG. Contact. As a result, the motor 31 is short-circuited, the rotation of the motor 31 is stopped, and the preparation for photographing is completed.

The user looks into the viewfinder window 9b (see FIG. 3) on the eyepiece side to check the subject, determines the composition, and then presses the shutter button 6. When the shutter button 6 is pressed, as shown in FIG. 10, the pressing pin 6b formed under the shutter button 6 presses the intermediate lever 115 downward. The intermediate lever 115 is rotated clockwise around a pin 114 formed on the front cover 19 and is engaged with the engaging portion 117.
Press down 18c. The locking release lever 118 with the claw 118c pushed down is connected to the front cover 19 by the connecting portion 11
8a is a fulcrum and is pushed down in the counterclockwise direction.
The vertical piece 66a of the locking lever 66 is pushed by b to rotate the locking lever 66 slightly counterclockwise.

When the locking lever 66 is rotated counterclockwise, the engagement between the locking lever 66 and the shutter drive lever 92 is released as shown in FIG. 9, and the shutter drive lever 92 is released.
Is rotated counterclockwise by the bias of the spring 93. At this time, the kick-off arm 92a kicks off the shutter blade 97, and the shutter blade 97 rotates against the bias of the spring 98 to open the exposure opening 91. As a result, the subject light that has passed through the taking lens 10 reaches the film 21b and is exposed.

At the same time, the locking lever 66 shown in FIG.
When is rotated in the counterclockwise direction, the counterclockwise pressing of the switching lever 62 by the pin 67 is released. As a result, the first contact piece 71 returns to its original shape due to its elasticity, and moves to the second contact piece 73 side.
However, while the shutter button 6 is being pressed, the pressing piece 116a formed on the pressing lever 116,
Since the second contact piece 73 is not in contact with the protruding piece 73a of the second contact piece 73, the second contact piece 73 is displaced in the direction away from the first contact piece 71 by its own elasticity, and the contact portion of the first contact piece 71 is displaced. 71
The a and the second contact piece 73 are not in contact with each other, and the motor 31 is not rotated.

After that, when the shutter button 6 is released, the second contact piece 73 is again pressed by the pressing piece 116a toward the first contact piece 71, so that the contact portion 71 of the first contact piece 71 is pressed.
The a and the second contact piece 73 are brought into contact with each other. As a result, the winding unit circuit 87 is closed, so that the motor 31 is rotated, and as described above, the film is wound by the rotation of the motor 31, and the shutter charging and the film winding are stopped.

When the photographing is performed as described above and the photographing of all the frames of the film is completed, the film 21b is entirely wound up in the cartridge 21a, and the motor 31 is continuously rotated. After confirming this, the user slides the main switch 7 to the "OFF" side to turn off the power, hands over the lens-fitted photo film unit 2 to the developing dealer, and requests simultaneous printing. At the developing shop, a part of the paper box 4 is broken, the lid 20a is opened, and the cartridge 21a is taken out.

The lens-fitted film unit 2 from which the cartridge 21a is taken out is collected by the manufacturer. In the film unit with lens 2 thus collected, the paper box 4 is peeled off and the front cover 19 is removed by the disassembly line. From the main body base 13, the strobe unit 1
5, the exposure unit 14 and the winding unit 17 are removed. Since the winding unit 17 is not wired by a lead wire or the like, the engaging claw 2 of the main body base 13 shown in FIG.
It can be easily removed by bending 8c and 28d.

The removed exposure unit 14, strobe unit 15, and winding unit 17 are conveyed to their respective function inspection lines. The function check of the hoisting unit 17 includes the presence or absence of a failure of the motor 31 and the gear train 32.
The rotation state of is confirmed. When the motor 31 is out of order, the holding frame 33 is deformed by the connecting portion 37 to remove the motor 31, and a new motor 31 is attached. If the gear train 32 is defective, the gear train 32 is removed and a newly molded gear train 32 is attached.

The exposure unit 14, the strobe unit 15, and the winding unit 17, which have passed the function inspection, are conveyed to the assembly line. Then, the main body base 13 is assembled again, the front cover 19 is attached to the front surface of the main body base 13, and the wiring of the circuit for the winding unit is performed. After that, the film loading and the mounting of the rear cover 20 are performed in the dark room. The completed unit body 3 is loaded with the battery 16 and the outer cover 4 is packaged to complete the lens-fitted film unit 2.

In the above embodiment, a thin plate-shaped iron plate is attached to the back surface of the front cover as a conductive surface, but a conductive film may be formed as a conductive surface.

[0068]

As described above, in the lens-fitted film unit of the present invention, the wiring contact portion is projected toward the front side from the motor and switch of the winding unit and the pair of contact pieces for holding the battery, A conductive surface is formed on the back surface of the front cover that contacts the contact points to wire the circuit for the winding unit, so it is easier to assemble and disassemble than the wiring using lead wires and soldering, and recycling is possible. The suitability also improves.

Further, since elasticity is imparted to the contact portion, the contact portion is pressure-bonded to the conductive surface, and wiring is surely performed. Further, the contact resistance between the contact portion and the conductive surface is also reduced, and more reliable film winding is possible.

[Brief description of drawings]

FIG. 1 is a front view of a front cover showing an arrangement of conductive surfaces.

FIG. 2 is a perspective view showing an appearance of a lens-fitted film unit of the present invention.

FIG. 3 is an exploded perspective view showing a configuration of a unit main body.

FIG. 4 is an explanatory view showing a method of attaching the winding unit to the main body base.

FIG. 5 is an explanatory diagram showing a wiring method of a motor.

FIG. 6 is an exploded perspective view showing the structure of a winding unit.

FIG. 7 is an explanatory diagram of a switch and a winding unit circuit.

FIG. 8 is a cross-sectional view of main parts showing the configuration and action of a main switch.

FIG. 9 is an exploded perspective view showing a configuration of an exposure unit.

FIG. 10 is an exploded perspective view showing a configuration of a shutter button.

[Explanation of symbols]

 2 Film unit with lens 13 Main body base 16 Battery 17 Winding unit 19 Front cover 31 Motors 43b, 44b Contact point 71c, 73b, 75b Switch contact point 72, 74, 74a, 76 Conductive surface 80a Positive contact point 81a Negative contact part

Claims (3)

[Claims] 1. A lens-fitted film unit in which a shutter mechanism and a photographing mechanism such as a photographing lens are incorporated, and a front cover is attached to the front side of a main body base in which a film and a cartridge are stored in advance. The motor has a built-in motor with its contact point protruding toward the front side.The motor holds the winding unit that winds up the photographed film into the cartridge and the battery that will be the power source for the motor. A pair of contact pieces having protruding parts are attached to the front surface of the main body base portion, and a plurality of conductive surfaces formed on the back surface of the front cover are in contact with the respective contact portions to form a circuit for a winding unit. A film unit with a lens, which is characterized by being wired. 2. A switch for closing the circuit at the time of shutter release and opening the circuit at the end of winding one frame is incorporated in the front surface of the main body base, and this switch is provided on the front cover through a contact portion protruding toward the front side. The film unit with a lens according to claim 1, wherein the film unit is in contact with a conductive surface. 3. The lens-fitted film unit according to claim 1, wherein the contact portion has elasticity and is pressed against a conductive surface.