JPH02302749A - Barrier for instant camera - Google Patents

Abstract

PURPOSE:To obtain the instant camera with satisfactory operability by providing a guide member which reciprocates while interlocking with an operation which is performed by means of motor power and by which a part of the camera is stored or it is drawn and moved to a photographing position. CONSTITUTION:A grip part 2 incorporates an electric motor 3 in its front; its output shaft projects into the front of a camera main body 1, and a pinion gear 21 is fitted to the projecting part. The storing and drawing operations are performed by a motor. The opening and closing of a barrier plate 91a interlock with the operations by which the part of the camera is stored and is drawn to a photographing position. Thus, the need to manually open and close the barrier plate 91a is eliminated, and the instant camera with sufficient operability can be obtained.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for protecting the photographing lens of a camera for taking instant photographs that can obtain color prints or black and white prints on the spot. Regarding barriers.

[Conventional technology]

With instant photos, you can get color or black and white prints on the spot, so you can check the print status on the spot, respond to urgent reports and press reports, or check the proper exposure using exposure test 1. The purpose of use is different from that of ordinary photographs, such as determining the

Therefore, this instant photographic film has 35
This film pack is a sheet film close to a normal type print size larger than a 1 m size negative film, and an appropriate number of films are stored in a pack, and this film pack is loaded into a camera for instant photography, that is, an instant camera. When the film is released, the top layer of film in the film pack is exposed, and a developing roller driven by an electric motor spreads and develops the film as it is sent out of the film pack to the outside of the camera, resulting in a print. will be obtained. Due to the above-mentioned circumstances, instant cameras generally have large film packs and use long focal length lenses, resulting in a bulky shape that is inconvenient to carry.

Therefore, in order to make an instant camera compact and not bulky when carried around, some cameras have a part of the camera body that can be folded.

As mentioned above, in the conventional instant camera in which the photographing lens can be stored by folding a part of the camera, the folding operation is performed manually. In this case, a barrier for the photographic lens is not provided, and the photographic lens is hidden in the main body case of the camera by the folding operation. Alternatively, the barrier can be opened and closed manually.

[Problem that the invention seeks to solve]

As described above, in conventional instant cameras, a part of the camera is folded manually, but it is conceivable that this could be done using an electric motor or the like. Moreover, since an instant camera has a built-in electric motor for feeding the film, the electric motor can be used to perform the folding operation, that is, the retracting operation, and the pulling operation to position a part of the camera at the shooting position. For example, there is no need to separately provide an electric motor for storage operation, and an instant camera with good operability can be obtained without sacrificing light weight or portability.

In a camera equipped with a barrier for the photographic lens, when a motor is used to partially retract the camera, it is desirable that the barrier also be opened and closed automatically.

Therefore, the present invention provides a barrier for an instant camera in which a motor is used to store and pull out a part of the camera, such as a photographic lens unit, and the barrier plate is opened and closed in conjunction with these operations. is intended to provide.

[Means for solving problems]

In order to achieve the above object, the barrier according to the present invention comprises:
An instant camera that has a mechanism that sends the film out of the camera body after release, and a mechanism that allows a part of the camera to be pulled out and placed at a shooting position for shooting when shooting, and to store it appropriately in the camera body when not shooting. The camera is provided with a guide member that reciprocates in conjunction with the storing operation and the pulling out operation of the camera to the photographing position, the operation of retracting and pulling out a part of the camera to the photographing position by the power of a motor; It is characterized in that the barrier plate is opened and closed by the reciprocating movement of the guide member.

[For production]

When a portion of the camera is pulled out to the photographing position, the guide member moves forward, and this movement causes the barrier plate to retreat from the front of the photographic lens and open. The guide member moves back in conjunction with the retracting operation, and this operation closes the barrier plate to protect the photographic lens.

〔Example〕

Hereinafter, the instant camera barrier according to the present invention will be specifically explained based on a preferred embodiment shown in FIGS. 1 to 1&.

As shown in FIGS. 5 to 11, this instant camera consists of a roughly rectangular camera body l and a grip part 2 attached to the side thereof.
The components constituting the photographic optical system, which is a part of the camera, are located at a storage position Pi for carrying and a photographing position P2 for photographing, as shown by solid lines and two-dot chain lines in the figure. .

As shown in FIG. 4, an electric motor 3 is built into the front part of the grip part 2, and its output shaft protrudes to the front part of the camera body 1 side, and a pinion gear 21 is fitted into the protruding part. be.

As shown in FIG. 4, FIG. 12, and FIG. A gear 23 is provided coaxially with this gear 22, and a gear 24 pivotally supported by the sub-plate 5 meshes with this gear 23. A gear 25 is provided coaxially with this gear 24, and a gear 26 pivotally supported by the sub-plate 5 meshes with this gear 25.
A gear 27 is provided coaxially with.

A gear 28 that is pivotally supported on the side plate 4a meshes with the gear 27, and the upper roller 6a of the pair of delivery rollers 6 is provided on the support shaft of the gear 28. is arranged to rotate in synchronization with the gear 28.

The lower roller 6b of the delivery roller 6 is provided below the upper roller 6a, and its support shaft is pushed upward by a leaf spring 7. The elastic force of the leaf spring 7 pushes the lower roller 6b toward the upper roller 6a, and the distance between the upper roller 6a and the lower roller 6b changes. Further, this feed roller 6 is disposed at a position facing the leading edge of the film, which will be described later.

The gear 28 includes a gear 29 pivotally supported by a support plate 8 disposed between the side plate 4a and the grip portion 2.
are in mesh with each other, and a gear 30 is provided coaxially with this gear 29. A gear 31 meshes with this gear 30, and a sun gear 33 of a planetary gear train 32 is provided coaxially with this gear 31. A substantially V-shaped swinging arm 34 is rotatably supported on the rotating shaft of the sun gear 33 through appropriate frictional force with the sun gear 33.
A planetary gear 35 is rotatably supported at one end of 4. Also, the rocking 111i! A stopper pin 9 is implanted at the other end of 34.

The planetary gear 35 is operated by the swinging of the swinging arm 34.

As shown by the solid line in FIG. 13, the first gear 41 of the retracting operation system
As shown by the two-dot chain line in the figure, it is designed to mesh with one of the feed gears 51 of the film feed operation system.

The first gear 41 is rotatably supported by the side plate 4a, and a second gear 42, which is rotatably supported by the side plate 4a, meshes with the first gear 41. This second gear 42 is connected to a third gear 43 rotatably supported by the side plate 4a.
This third gear 43 meshes with an immediate gear 44 rotatably supported by the side plate 4a. and,
This driving gear 44 meshes with a sector-shaped first gear 45 rotatably supported by the side plate 4a.

The sector-shaped first gear 45 is combined with a sector-shaped second gear 46 as shown in FIGS. 17 and 18.

As shown in the figure, in the combination of these sector-shaped gears 45 and 46, the sector-shaped second gear 46 is inserted into a through hole 45b bored in the center of the sector-shaped first gear 45 so that the rotation axis 45a is common. A boss portion 46a protruding from the center of the gear is inserted loosely so that the fan-shaped first gear 45 and the fan-shaped second gear 46 can rotate freely relative to each other. A substantially V-shaped guide hole 45c is formed at an appropriate position of the sector-shaped first gear 45, with the bent portion of the V shape facing the rotating shaft 45a, and the bent portion has a rotating shaft. An arc-shaped recess 45d is formed on the 45a side. Furthermore, a release protrusion 45e is provided to protrude from one end of the outer periphery in the fan-shaped circumferential direction.

On the other hand, on the surface of the sector-shaped second gear 46 facing the sector-shaped first gear 45, a base end portion of a locking lever 46b is supported by a shaft 46c so as to be swingable in a plane orthogonal to the rotation shaft 45a. . The guide hole 4 is located in the middle part of this locking lever 46b.
An engagement pin 46d that is loosely inserted into the 5c is protruded, and this engagement pin 46d normally engages with the recess 45d to prevent rotation between the sector-shaped first gear 45 and the sector-shaped second gear 46. Transmission of motion is performed. In addition, the locking lever 46
A return spring 46e made of an elongated coil spring is hooked between the free end of b and the fan-shaped second gear 46, and the restoring force of the return spring 46e is applied to the engagement pin 46d of the locking lever 46b.
is biased so that it swings in the direction in which it engages with the recessed portion 45d.

In addition, as shown in FIGS. 17 and 18, the fan-shaped first
The teeth of the gear 45 and the sector-shaped second gear 46 are formed in portions required for the operations described below.

Note that the sector-shaped second gear 46 may be formed over the entire outer peripheral surface.

The fan-shaped second gear 46 meshes with a rack 10a formed on the lower end surface of the slider 10, as shown in FIGS. 4, 12, and 13. This slider 10 has guide pins 10b and loc installed,
The guide pins 10b and 10c are loosely inserted into long holes 4b formed in the side plate 4a, so that the slider (0) can freely slide in the left-right direction (direction parallel to the optical axis) in FIGS. 12 and 13. A locking portion 10d is provided at the top of the slider 10 and projects laterally from the rear to the middle portion, and a locking recess 10e is formed at an appropriate position on the lower surface of the locking portion 10d.

As shown in FIG. 4, there is also a long hole 4 in the other side plate 4a facing the long hole 4b into which the guide pin 10c is loosely inserted.
c is formed.

The guide pin 10c further projects inward from the side plate 4a, and the lower end of the drive link 11 is rotatably supported by this projecting portion. A substantially central portion of a driven link 12 is connected to a substantially central portion of the driving link 11 via a shaft 14 so that the driving link 11 and the driven link 12 are rotatable with respect to each other. 1. The upper end of this drive link 11 is rotatably connected to the front of a top plate 13 forming a dark box. On the other hand, the lower end of the driven link 12 is rotatably supported above the front part of the side plate 4a, and a pin 12a protrudes from its upper end. It is loosely inserted into the elongated hole 13a. Note that the guide pin 10c connected to the lower end of the sliding link 11 is located at the position where the long hole 13a is projected.
The elongated hole 4b into which is loosely inserted is located. Further, the above-mentioned drive link 11 and driven link 12 are also connected to the side plate 4a on the opposite side and the opposite side of the top plate 13, and the upper parts of the drive links 11 arranged on the side plate 4a are connected to each other. It is rotatably connected to the connecting rod 11a by a connecting rod 11a. Further 1 opposite drive link 11
A guide pin Ilb is provided at the lower end of the guide pin Ilb, and this guide pin Ilb is loosely inserted into the elongated hole 4c.

Further, the elongated hole 13 of the top plate 13 of the driven link 12
One end of an operation plate 15 is rotatably supported by a pin 12a loosely inserted into the pin 12a, and two elongated holes 15a and 15b are formed at appropriate positions on the operation plate 15 at an appropriate distance apart. has been done. A mirror cover 16 is provided at the rear end of the top plate 13 so as to be rotatable around a shaft 16a. A laterally protruding cover guide pin 16b is implanted at an appropriate position in the middle of the mirror cover 16, and the cover guide pin 16b is loosely inserted into the elongated hole 15a of the operation plate 15.

A mirror 17 is disposed on the lower surface of the mirror cover 16, and this mirror 17 is rotatably supported on the side plate 4a by a shaft 17a. A mirror guide pin 17b that protrudes laterally is implanted at an appropriate position in the middle of the mirror 17, and this mirror guide pin 17b is connected to the operation plate 1.
It is loosely inserted into the elongated hole 15b of No.5.

A lens frame portion 18 is provided on the front edge of the top plate 13, and a photographing lens unit 19 is attached to approximately the center of this lens frame portion 18.

Furthermore, a protrusion 18a having an appropriate shape and protruding outward from the side plate 4a is formed at an appropriate position on the side of the lens frame portion 18.

Three arms 61a, 61b, 61 are provided at the rear of the side plate 4a.
The locking member 61 having the shape c has the three arms 61a,
It is rotatably supported by a shaft 61d at a position where 61b and 61c are assembled. Arm 6 of this locking member 61
Reference numeral 1a denotes a release arm extending rearward and protruding beyond the back plate 4d of the main body case 4, and the tip of the release arm 61a is rotated by a shaft 62a (shown in the fourth figure) approximately in the center of the back plate 4d. The communication lever 62 is freely supported and both ends engage with the lower surface of one end of the communication lever 62 which protrudes laterally from each side plate 4a. The arm 61b is a locking arm that extends forward and has a locking pin 61e at its tip protruding toward the side plate 4a, and the tip of the locking arm 61b reaches the side of the slider 10. The locking pin 61e is designed to engage with the lock recess 10e formed in the lock portion 10d of the slider 10 and to smoothly rub against the lower surface of the lock portion 10d. Further, a return spring 61f made of a tension coil spring is hooked between the distal end of the locking arm 61b and the side plate 4a, and the restoring force of the return spring 61f is transferred to the locking pin 6]e. The lock member 61 is biased to rotate in the direction in which it engages with the lock member 61. The arm 61c is an input arm that extends downward and is located within the rotation range of the release protrusion 45e of the sector-shaped first gear 45, and the release protrusion 45e is rotated by the rotation of the sector-shaped first gear 45. When it comes into contact with this input arm 61c, this locking member 61 moves to the 12th position around the shaft 61d.
Rotates clockwise in the diagram.

As shown in FIG. 4, the opposite end of the communication lever 62 engages with the upper surface of the rear end of a locking lever 63 rotatably supported by a shaft 63a on the side plate 4a at the center of the lever. It matches. As shown in FIG. 4, a notch 63b is formed at the front end of the locking lever 63, and the drive link 11
When the guide pin Ilb implanted in the lower end of the hole 4c is positioned in front of the elongated hole 4c, the guide pin Ilb is inserted into the notch 6.
3b. Also.

A restoring force of a tension spring 63c made of a tension coil spring is applied to the rear end of the locking lever 63, and this restoring force causes the locking lever 63 to move in the direction in which the notch 63b engages with the guide pin llb. It is designed so that it rotates.

A delivery gear 51 with which the planetary gear 35 meshes is rotatably supported by the side plate 4a, and a cam drum 52 is mounted on the rotation axis of the delivery gear 51 as shown in FIGS. 4 and 13.
It is provided to rotate in synchronization with 1. A part of the outer circumferential surface of this cam drum 52 is cut out, and the four cam parts 52 are cut out.
A is formed, and a control lever 53 having an engaging end 53a that engages and disengages with the cam recess 52a is rotatably supported by the side plate 4a about a shaft 53b. The control lever 53 has a substantially L-shape as shown in FIG. 13, and is supported at its bent portion by the shaft 53b. Further, one end of the control lever 53 is provided as an operating end 53c, and when the control lever 53 is rotated, the operating end 53c
The switch 54 is turned on and off by engaging and disengaging the switch piece 54.11 of the switch 54. The engagement end 53a side of the control lever 53 is biased by the restoring force of a return spring 53d made of a tension coil spring.

This restoring force causes the control lever 53 to rotate in the direction in which its engagement end 53a engages with the cam recess 52a. Further, as shown in FIG. 13, an operating pin 51 pointing toward the side plate 4a is located on the side surface of the delivery gear 51 at a position in an appropriate relationship with the four cam parts 52a.
A is planted.

As shown in FIG. 13, a claw 55 is provided on the side plate 4a so as to be movable in the direction of the optical axis. It is guided by being loosely inserted into the hole 4e. As shown in FIGS. 13 and 16, the claw 55 is formed of a drive plate portion 55a parallel to the side plate 4a and an operation plate portion 55b bent at right angles to the drive plate portion 55a.
The drive plate portion 55a passes through a claw through hole 55c formed in the side plate 4a, and the operation plate portion 55b is attached to the outside of the side plate 4a.
is located inside the side plate 4a. As shown in FIG. 13, the rear end portion of the operation plate portion 55b is bent and formed into a pull-out claw portion 55cl.

Below the operation plate portion 55b of the claw 55 and below the mirror 17, a film pack 70 is housed in the camera body 1 so as to be freely removable and removable, as shown in FIGS. 13 and 16. This film pack 70 is loaded with a plurality of sheet films, and the film 71 located at the top is exposed. A box 72 filled with a developer is provided at the front end of the film, and a liquid reservoir 73 is provided at the rear end to absorb the developer diffused on the film surface.

The pull-out claw portion 55d of the claw 55 is adapted to engage with the edge of the liquid reservoir portion 73. Also.

As mentioned above, the bod 72 is arranged to face the delivery roller 6.

The front end of the drive plate portion 55a of the claw 55 is connected to the delivery gear 5.
1, and an engaging tongue piece 55e that engages with and disengages from the operating pin 51a implanted on the side surface of the delivery gear 51 is provided at the tip.

The engagement and disengagement between the operating pin 51a and the engaging tongue piece 55e is performed by rotation of the delivery gear 51. In addition, the drive plate portion 5
A return spring 55f made of a tension coil spring is hooked between the rear end portion of 5a and the side plate 4a, and the claw 55 uses the restoring force to bias the return spring 55f backward in FIG. 13 by 81J+. It is.

An operating lever 81 is provided on the side plate 4a and is movable in a direction parallel to the optical axis from the center end to the rear end of the main body case 4. The operating lever 81 is guided in its sliding direction by loosely inserting a guide pin 81a implanted in the side plate 4a into a long hole 81b formed in the operating lever 81. Further, a return spring 81c made of a tension coil spring is provided between the front part of the operating lever 81 and the side plate 4a.
The lever is extended, and its restoring force is biased in the direction in which the operating lever 81 moves forward. Further, the upper edge of the front end is appropriately chamfered to form an inclined surface 81d. Further, a locking protrusion 81e projecting upward is provided at an appropriate position on the front portion, and a locking pin 81f is implanted at the rear end. Note that, as shown in FIGS. 12, 13, and 15, the operating lever 81 is formed into an appropriately bent shape due to the arrangement of the power transmission gears described above.

Above the portion where the locking protrusion 81e is formed, a control member 82 is provided with a long hole 82a formed in the control member 82.
A guide pin 82b implanted in the side plate 4a is loosely inserted and provided slidably in a direction parallel to the optical axis. This control member 82 includes a return spring 82 made of a tension coil spring.
A hook is passed between the side plate 4a and the side plate 4a, and its restoring force is used to bias the control member 82 in the direction to move rearward.

Furthermore, a locking protrusion 82d that engages with and disengages from a locking protrusion 81g formed on the operating lever 81 is formed at an appropriate position on the lower edge of the control member 82. The engagement between the locking protrusion 81e and the locking protrusion 82d is achieved by the operation lever 8.
1 and is engaged when the actuating lever 81 moves forward. Further, a stopper protrusion 82e is formed at an appropriate position on the lower edge of the control member 82, and when the control member 82 moves forward, the stopper protrusion 82e
2e is positioned within the rotation range of the stopper pin 9 implanted in the swing arm 34 of the planetary gear train 32.

A switching operation lever 8 is located near the rear end of the operating lever 81.
3 is rotatably supported on the side plate 4a about a shaft 83a. As shown in FIGS. 12 and 13, this switching operation lever 83 is composed of three levers: an operation lever part 83b, an input lever part 83c, and a switching lever part 83d. The shaft 83a
are arranged. At an appropriate position on the operating lever part 83b,
As shown in FIG. 15, a positioning protrusion 83e that can be freely retracted and retracted by the restoring force of a push spring 83g is provided, and cooperates with a positioning recess 83f formed in the side plate 4a to move the switching operation lever 83 to a predetermined position. Stop at the position. Also,
The rear surface of the input lever portion 83c engages with the front side surface of a locking pin 81f implanted in the operating lever 81. Furthermore, the tip of the switching lever part 83d is connected to the switching operation lever 8.
The switch piece 84 of the main switch 84 is
a, and turn the main switch 84 on and off.

Further, a brush 85a is attached to the inner surface of the fan-shaped second gear 46, as shown in FIGS. 12 and 13, and the brush 85a is always in contact with a contact point of an encoder 85b provided on the side plate 4B. are doing. Then, the on/off change of the main switch 84 and the encoder 8
As will be described later, the electric motor 3 is driven and stopped, and the direction of rotation thereof is changed by the output signal of the electric motor 5b.

The photographing lens unit 19 includes a photographing lens 19a as shown in FIG.
In front of 9a, a barrier 91 according to the present invention as shown in FIGS. 1 to 3 is provided so as to be openable and closable. As shown in FIGS. 1 and 2, this barrier 91 consists of two substantially arc-shaped barrier plates 91a that are divided into upper and lower parts.
An operating rod 91b as a guide member extends from the side end of each barrier plate 91a,
91c extends toward the inner surface 92 of the grip portion 2. The tip of the operating rod 91b provided on the lower barrier plate 91a is loosely inserted into a guide groove 91d formed on the inner surface 92 of the grip part 2, and this guide groove 91d is shown in FIG. It is formed so that the lower end is at the forefront and the upper end is at the rear.

The distal ends of actuating arms 91e are rotatably connected to the distal ends of the operating rods 91b and 91c, respectively, and the base end of the actuating arms 91e is rotatably supported around a shaft 91f. . and.

A drive gear 91g is fitted onto each shaft 91f so as to rotate in synchronization with the shaft 91f, and these drive gears 91g mesh with each other. Each operating arm 91e also has a return spring 91h made of a tension coil spring.
The restoring force is provided by barrier plate 9.
It is biased so that the inner edges of 1a and 91a are brought into close contact with each other. Although not shown, the lens board 93 is provided with a guide that guides the turning movement of the barrier plate 91a.

As shown in FIGS. 4, 6, 10, and 14, the grip portion 2 accommodates an electric battery 95, a strobe capacitor 96, and the like. Further, as shown in FIGS. 5 and 7, a strobe light emitting window 9 is provided at the front end of the grip portion 2.
7 and a finder 98 are arranged. In addition, in FIG. 6, FIG. 1O, and FIG. 14, 97a is a strobe discharge tube, and 97b is a reflector.

The operation of the barrier of the instant camera according to the present invention constructed as described above will be explained below, together with the storage and other operations of this instant camera.

The state shown by the solid line in Fig. 5, Fig. 6, Fig. 8, Fig. 10,
FIG. 12 shows a state in which the photographing lens unit 19 is stored in the main body case 4. In this state, the instant camera cannot be used for photographing, and is compact for convenient carrying.

In this state, as shown in FIG.
The distal end of the lens frame 18 is located in front of the lens frame 18, and the lower surface of the distal end engages with the upper surface of the protrusion 18a of the lens frame 18.
Even if I tried to pull up 19, I couldn't. In addition, since the operating lever 81 is located at the very front,
The locking protrusion 82d of the control member 82 is pushed by the locking protrusion 81e of the operating lever 81, so that the control member 82 is also at the forefront. At this time, the stopper protrusion 82e of the control member 82 is connected to the stopper pin 9 implanted in the swing arm 34 of the planetary gear train 32.
The swing arm 34 is prevented from rotating counterclockwise from the position shown in FIG. 12.

Further, the sector-shaped first gear 45 and the sector-shaped second gear 46 are in the position when the slider IO is positioned at the rearmost position, and the encoder 85b outputs the position of the sector-shaped gears 45 and 46.

Further, the mirror 17 is tilted to a nearly horizontal position as shown by the solid line in FIG.

In order to change the camera from the storage state at the storage position ip□ to the standby state, which is the photography position P2, where the camera is used for photography, operate the operation lever part 83b of the switching operation lever 83 as shown in FIG. The switching operation lever 83 is rotated from the position shown in FIG. 13. Therefore, the input lever 83c of the switching operation lever 83, which is engaged with the locking pin 81f of the first actuation lever 81, turns counterclockwise in FIG. 12 to move the actuation lever 81 to the position shown in FIG. make them retreat. This retreat disengages the distal end of the operating lever 81 from the protrusion 18a of the lens frame 18, allowing the photographing lens unit 19 to move upward.

Further, when the first actuation lever 81 is moved backward, the actuation lever 81
The control member 8 that was restrained by the locking protrusion 81e of
2 becomes free, and the control member 82 also retreats due to the restoring force of the return spring 82c. Therefore, the stopper protrusion 82e of the control member 82 retreats from the rotation range of the stopper pin 9 implanted in the swing arm 34, so that the swing arm 34
Rotation in the counterclockwise direction in Figure 3 is allowed.

Simultaneously with the retraction of the operating lever 81, the switching operation lever 8
The switching lever 83d of No. 3 is the switch piece 84 of the switch 84.
a to turn on the switch 84.

As mentioned above, the output of the encoder 85b is transmitted to the actuating lever 8.
1 indicates that it is at the rearmost position, and the electric motor 3 rotates in the forward direction based on this information and the change of the switch 84 from off to on. By the forward rotation of this electric motor 3,
The pinion gear 21 rotates clockwise in FIG. 12. When the rotation of this pinion gear 21 is transmitted to the sun gear 33 via the gears 22 to 31, the sun gear 33
It will rotate clockwise in Figure 2. Since an appropriate frictional force acts between the sun gear 33 and the swinging arm 34, the swinging arm 34 also rotates in the same direction, and the planetary gear 35 pivotally supported by it meshes with the first gear 41. I will do it. Therefore, the rotation of the electric motor 3 is transmitted from the planetary gear 35 to the fan-shaped first gear 45 via the first gear 41, second gear 42, third gear 43, and movement gear 44. The sector-shaped first gear 45 rotates in a clockwise direction in FIG. 12.

As shown in FIGS. 17 and 18, a sector-shaped second gear 46 is attached to the sector-shaped first gear 45, and a recess 45d of the sector-shaped first gear 45 and an engagement pin 46d of the sector-shaped second gear 46 are engaged with each other. Since they are combined in the same state, the fan-shaped first gear 4
12, the fan-shaped second gear 46 also rotates in the clockwise direction in FIG.

Since the fan-shaped second gear 46 is engaged with the rack 10a of the slider 10, the slider 10 moves forward from the position shown in FIG. 12 to the position shown in FIG. 13.

Since the lower end of the drive link 11 is connected to the guide pin 10c installed on the slider 10, the lower end of the drive link 11 moves forward as the slider 10 moves forward. On the other hand, since the lower end of the driven link 12 is rotatably supported by the side plate 4a, the distance between the lower end of the driving link 11 and the lower end of the driven link 12 becomes shorter as the driving link 11 moves forward. It turns out. Therefore, the upper ends of the driving link 11 and the driven link 12 are pushed upward. At this time, the pin 12a at the upper end of the driven link 12 slides inside the long hole 13a formed in the top plate 13, and becomes immovable as it is pivotally supported by the upper end of the driven link 12 and the top plate 13. driving link 11
The distance to the upper end is shortened as well as the distance between the lower ends of the respective links 11.12.

Since the top plate 13 is attached to the upper end of the link 11.12, the top plate 13 is also pushed upward, and the lens frame 18 provided at the front end of the top plate 13 rises. become. Since the lens frame portion 18 is provided with the photographing lens unit 19, the photographing lens unit 19 is raised to the photographing position UP2 where it can be used for photographing.

Furthermore, since the mirror cover 16 is supported at the rear end of the top plate 13, the mirror cover 16 also rises as the top plate 13 rises. At this time, since the operating plate 15 is pivotally supported at the upper end of the driven link 12, the operating plate 15 also rises, and the long hole 15a of the operating plate 15 is provided with a cover guide implanted in the mirror cover 16. Since the pin 16b is loosely inserted, the mirror cover 16 is lifted up by being guided by the operation plate 15. Therefore, after being raised, it is in an appropriately inclined state as shown in FIG. 13.

Since a mirror guide pin 17b implanted in the mirror 17 is loosely inserted into the elongated hole 15b of the operation plate 15, the mirror 17 rotates around its rotation axis 17a as the operation plate 15 rises. It rotates around the center counterclockwise in FIG. 12 and is positioned at an appropriately inclined position as shown in FIG. 13. In this case, the rotation angle of the mirror 17 is guided by the rise of the operation plate 15. If the mirror 17 is in this state, the light is reflected by the mirror 17 through the photographing lens 19a, and the film 71 becomes in a standby state in which it can be exposed, that is, in a standby state in which it can be used for photographing.

Further, when the slider 10 is moved to the frontmost position to put the camera in a standby state, the locking arm of the locking member 61 is inserted into the locking recess 10e formed in the locking portion 10d of the slider 10, as shown in FIG. A locking pin 61e implanted in 61b is engaged with the locking pin 61e. This is because when the slider 10 moves forward, the locking pin 61e scrapes the lower surface of the locking portion 10d due to the restoring force of the return spring 61f, and when the locking pin 61e is located in the locking recess 10e, the locking member 61 moves around the shaft 61d as shown in FIG. This is because the locking pin 61e falls into the lock recess 10e by rotating counterclockwise.

Furthermore, when the locking member 61 rotates, the release arm 61a also rotates counterclockwise in FIG.
The communication lever 62, one end of which is engaged with the distal end of the release arm 61a, becomes free. The rear end of a locking lever 63 is engaged with the other end of the connection lever 62, and since the communication lever 62 becomes free, the locking lever 63 is released from its restraint. Moreover, since the restoring force of the tension spring 63c is applied to the locking lever 63, the locking lever 63 rotates in the direction of arrow P in FIG. 4 about the shaft 63a in response to this restoring force. -It will move. A notch 63b formed at the front end of the locking lever 63 by this rotation.
is engaged with the guide pin llb of the drive link 11.

That is, the locking pin 61e of the lock member 61 engages with the lock recess 10e of the slider 10, thereby preventing the slider 10 from sliding, and the guide pin llb of the drive link 11 engages with the notch of the locking lever 63. 63b is engaged, movement of the drive link 11 is prevented. Therefore, even if you try to push down the top plate 13 in the standby state, you will not be able to push it down.

Also, the barrier, which was closed in the retracted state, will open. When in the retracted state, the photographic lens unit 1
9 is stored in the main body case 4, so the first
In the figure, the tip of the operating rod 91b of the barrier 91 is connected to a guide groove 91 formed on the inner surface 92 of the grip part 2.
It is located almost at the lower end of d. That is,
In the retracted state, the photographing lens unit 19 and the barrier 91 are located at the lower position in FIG.
It is in a closed position covering the front of a. Then, when the photographing lens unit 19 rises as described above, the barrier 91
The operating rod 91b similarly rises while being guided by the guide groove 91d. Since the guide groove 91d is formed to be inclined as shown in FIG. 1, the tip of the operating rod 91b will retreat as the rod 91b moves upward. Therefore, the operating arm 91 connected to the operating rod 91b
e rotates counterclockwise about the shaft 91f from the position shown by the dotted chain line in FIG. 1 to the position shown by the solid line.

Since this shaft 91f is provided with a drive gear 91g, the actuation arm 91e connected to the operating rod 91c via these drive gears 91g rotates clockwise from the position shown by the dotted chain line in Figure 1 to the position shown by the solid line. It will rotate in the direction. These operating arms 91e have barrier plates 9
1a, the barrier plate 91a is opened as shown by the solid line in FIG.

FIG. 13 shows the standby state in which the photographing lens unit 19 is raised and the barrier 91 is opened as described above.
At this time, the encoder 85b outputs a signal indicating that the fan-shaped second gear 46 is in the standby state position T, so that the electric motor 3 is stopped even if the main switch 84 is turned on.

When the standby state is established as described above, the lock recess 1 of the lock portion 10d of the slider 10 is opened as shown in FIG.
Since the locking pin 61e of the locking member 61 engages with the locking pin 61e, the slider 10 does not move back from then on, and therefore the second fan-shaped
Rotation of gear 46 is stopped. When the fan-shaped second gear 46 stops in this way, the encoder 85b
The electric motor 3 is stopped by the output of A situation may arise. However, in this case, since the sector-shaped first gear 45 rotates slightly with respect to the sector-shaped second gear 46, the rotation of the sector-shaped first gear 45 is not transmitted to the sector-shaped second gear 46. That is, the sector-shaped first gear 45 and the sector-shaped second gear 46 are linked as shown in FIGS. 17 and 18, and the rotation of the sector-shaped first gear 45 is performed through the recess 45d and the engagement pin 46d. fan-shaped second
The signal is transmitted to gear 46. When the fan-shaped first gear 45 rotates when the fan-shaped second gear 46 stops rotating, the locking lever 46b moves clockwise in FIG. 18 about the shaft 46c against the restoring force of the return spring 46e. Slight rotation causes the recessed portion 45d to disengage from the engagement pin 46d and guide hole 45c.
The engagement pin 46d is located inside. Thereafter, only the sector-shaped first gear 45 rotates while the guide hole 45c is displaced with respect to the engagement pin 46d due to the rotation of the sector-shaped first gear 45.

The above-mentioned operation may occur if the taking lens unit 19 is raised from the retracted state to the standby state when the taking lens unit 19 is prevented from rising due to, for example, being inadvertently pressed by the operator or for other reasons. Fan-shaped second gear 4
Even if the rotation of the electric motor 3 is stopped, the rotation of the fan-shaped first gear 45 by the electric motor 3 is allowed, so that no failure occurs in the storage operation system or the like.

The state shown in FIG. 13 is a standby state that can be used for photographing, and when a release button (not shown) is operated in this state, the shutter opens and the light is reflected by the mirror 17 and exposed onto the film 71.

When the release ends, the electric motor 3 receives the end signal.
rotates in the opposite direction. The reverse rotation of the electric motor 3 causes the pinion gear 21 to rotate counterclockwise in FIG. 13. When the rotation of pinion gear 21 is transmitted to sun gear 33 via gears 22 to 31, sun gear 33 rotates counterclockwise in FIG. 13. Also, since the gear 28 is rotated counterclockwise in FIG. 13 during transmission to the sun gear 33, the upper roller 6 of the delivery roller 6
A will be rotated in the same direction.

When the sun gear 33 rotates in the counterclockwise direction in FIG.
The second S I-flange protrusion 82e is retracted, and
Since an appropriate frictional force acts between the sun gear 33 and the swinging arm 34, the swinging arm 34 rotates counterclockwise as shown by the two-dot chain line in the figure, and the planetary gear 35 is delivery gear 5
It will mesh with 1. Therefore, the delivery gear 51 rotates counterclockwise in FIG. 13. When the delivery gear 51 rotates, the operating pin 51a installed therein pivots in the same direction, so when it pivots to an appropriate position, it comes into contact with the engagement tongue 55e of the claw 55, and the subsequent rotation of the operating pin 51a As a result, the claw 55 is pushed to the right in FIG. 13 and moves forward.

Since the rear end of the operating plate portion 55b of the claw 55 is provided with a pull-out claw portion 55d facing the rear end portion of the film 71,
As the claw 55 moves forward, the pull-out claw 55d engages with the rear end of the film 71, and the film 71 is pulled forward from the film pack 70. The upper roller 6a of the feed roller 6 rotates counterclockwise in FIG. 13, and the lower roller 6b rotates clockwise due to the meshing of the gears 28 and 28'.
When the leading end of the film 71 reaches the delivery roller 6, the film 71 is fed forward by the rotation of the delivery roller 6. At this time.

Since the upper portion of the lower roller 6b is pressed against the roller 6a by the leaf spring 7, the bod 72 at the front of the film 71 is crushed. Since the developer is stored in the bot 72, when it is crushed, the developer flows out onto the surface of the film 71, passes through the delivery roller 6, and is diffused onto the surface of the film 71. is developed. Further, excess developer adheres to the upper roller 6a and is absorbed into a liquid reservoir 73 at the rear end of the film 71. Then, the developed and printed film 71 is sent out to the front of the main body case 4, and the undeveloped film 71 is positioned at the top of the film pack 70 to wait for the next photographing.

On the other hand, when the delivery gear 51 starts rotating, the delivery gear 5
The cam recess 52a of the cam drum 52 rotates in synchronization with the
The engaging end 53a of the control lever 53 that is engaged with the first
It rides on the outer peripheral surface of the cam drum 52 from the position shown in FIG. Therefore, the control lever 53 rotates counterclockwise in FIG. 13 about the shaft 53b against the restoring force of the return spring 53d.
3c contacts the switch piece 54a and turns on the switch 54.

After the switch 54 is turned on, the delivery gear 51 further rotates, and the operating pin 51a of the delivery gear 51 is moved to the claw 55.
When the claw 55 is turned to a position higher than the engagement tongue 55e, the actuation pin 51a is disengaged from the engagement tongue 55e.
becomes free. At this time, the film 71 has already been fed into the delivery roller 6 as described above and is drawn into the delivery roller 6. When the claw 55 is free, the return spring 55
Due to the restoring force of f, the claw 55 retreats to the original position shown in FIG. 13 and waits to feed the next film 71.

When the delivery gear 51 rotates once and the cam recess 52a of the cam drum 52 engages the engagement end 53a of the control lever 53, the control lever
3 rotates clockwise in FIG. 13 to reach the position shown in the figure and turns off the switch 54. sand.

That is, when the delivery gear 51 rotates, the switch 54 is turned on and then turned off. The electric motor 3 is stopped by this changed information from ON to OFF, and thereafter the rotation of the delivery gear 51 is stopped and the camera waits for the next photographing.

Next, the operation of storing the photographing lens unit 19 in the standby state in the main body case 4 will be explained.

In order to store the photographic lens unit 19.

The switching lever 83 is rotated from the position shown in FIG. 13 to the position shown in FIG. 12. As a result, the input lever 83
c releases the locking pin 81f of the operating lever 81, and the operating lever 81 moves forward to the position shown in FIG. 12 by the restoring force of the return spring 81c. Therefore, the control member 82 whose locking projection 82d is engaged with the locking projection 81e of the operating lever 81 is moved forward to the position shown in FIG. 12 against the restoration direction of the return spring 82c. As the control member 82 moves forward, the stopper protrusion 82 of the control member 82
e engages with the stopper pin 9 of the swinging arm 34 as shown in FIG. 12, and the swinging arm 34 is rotated from the position shown by the earthwork dotted line in FIG. , the planetary gear 35 is brought into mesh with the first gear 41.

Further, when the switching operation lever 83 is operated, the operation lever part 83d is separated from the switch piece 84a.

Switch 84 is switched from on to off. At this time,
Since the encoder 85b sends a signal indicating that the camera is in standby mode, this signal and the switch 84
This change causes the electric motor 3 to rotate in the opposite direction.

This reverse rotation of the electric motor 3 causes the pinion gear 21 to rotate counterclockwise in FIG. 13. When the rotation of pinion gear 21 is transmitted to sun gear 33 via gears 22 to 31, sun gear 33 rotates counterclockwise in FIG. 13. At this time, since the swinging arm 34 is restrained by the stopper protrusion 82e of the control member 82, the planetary gear 35 and the first gear 41 do not mesh even though the sun gear 33 rotates counterclockwise. Not canceled. Therefore, the rotation of the electric motor 3 is transmitted from the planetary gear 35 to the sector-shaped first gear 45 via the drive gear 44, and the sector-shaped first gear 45 rotates counterclockwise in FIG. 13. At this time, the locking pin 6 of the locking member 61
1e is engaged with the lock recess 10e of the slider 10, and the sector-shaped second gear 46 is engaged with the rack 10a of the slider 10, so that the sector-shaped second gear 46 is engaged with the sector-shaped first gear
It is stopped regardless of the rotation of the gear 45.

At this time, as described above, the recess 45d of the sector-shaped first gear 45 is disengaged from the engagement pin 46d of the sector-shaped second gear 46, and only the sector-shaped first gear 45 rotates.

Then, when the sector-shaped first gear 45 rotates to the appropriate position,
The release protrusion 45e of the fan-shaped first gear 45 is connected to the lock member 6.
1 input arm 61c, the lock member 61
12 from the position shown in FIG. 13 centering on the axis 61d.
Rotate clockwise to the position shown in the figure. Due to this rotation, the engagement between the lock pin 61e and the lock recess 10e is released, so that the sector-shaped second gear 46 is then moved in the counterclockwise direction in FIG. 13 in conjunction with the sector-shaped first gear 45. It will rotate.

Further, when the lock member 61 rotates clockwise in FIG. 13, its release arm 61a lifts one end of the communication lever 62 upward in FIG. 13. At the other end of this communication lever 62, there is a locking lever 6 as shown in FIG.
3 is engaged, and the operation of the communication lever 62 causes the locking lever 63 to rotate in the opposite direction of arrow P about the upper shaft 63a in FIG. 4 against the restoring force of the tension spring 63c.

This rotation of the locking lever 63 causes the notch 63b to come off the guide pin 11b of the drive link 11.
! ! The constraint on the i-section link 11 is released.

Then, when the sector-shaped second gear 46 rotates counterclockwise in FIG.
It will move backward to the left from the position shown in Figure 3. Since the lower end of the drive link 11 is connected to the slider 10, the lower end of the drive link 11 also moves backward. Therefore, the lower end of the opening link 11 is separated from the lower end of the driven link 12, and as the top plate 13 is lowered, the lens frame 18 is also lowered, and the photographic lens unit 19 is also lowered.

During the descent of the lens frame 18, the lens frame 18 comes into contact with the tip of the operating lever 81, which has been advanced to the position shown in FIG. 12 for the retracting operation. The operating lever 81
Since the top surface of the distal end thereof is formed as an inclined surface 81d, the actuating lever 8
1 is pushed backward against the restoring force of the return spring 81c. At this time, the locking protrusion 81e of the operating lever 81 slightly releases the restraint of the time control member 82, but the planetary gear 35
Since the first gear 41 and the first gear 41 are in a securely engaged state, the frictional force between the stopper pin 9 of the swing arm 34 and the stopper protrusion 82e of the control member 82 does not easily release their engagement. Then, when the protrusion I8a passes,
Due to the restoring force of the return spring 81c, the operating lever 81 is moved to the position shown in FIG. 12.

As the top plate 13 descends, the operation panel 15 also descends, and the mirror cover 16 also descends. As the mirror cover 16 is lowered, the mirror 17 located below the mirror cover 16 rotates clockwise in FIG. 13 about the shaft 17a. At this time, the mirror cover 16 is
It descends while rotating clockwise in FIG. 13 about the shaft 16a, and reaches the position shown in FIG. 12 at the lowest end.

FIG. 12 shows the retracted state, and when the slider 10 is retracted to this state, the encoder 85b outputs a signal to that effect, and the electric motor 3 is stopped by this signal. In the retracted state, the protrusion 18a of the lens frame 18 is located below the tip of the actuating lever 81, so even if an attempt is made to pull up the top plate 13 or the like from the outside, it will not be possible.

In addition, the open barrier 91 is removed from the photographing lens unit 1.
It will close as the number 9 descends. That is, when the photographing lens unit 19 is in the standby state, the operating rod 91b is located almost at the upper end of the guide groove 91d, as shown by the solid line in FIG.
, 91a are open. When the photographic lens unit 19 descends from this position, the tip of the operating rod 91b is guided by the guide groove 91d and descends while rotating clockwise in the top of FIG. 1 about the shaft 91f. Therefore, the barrier plate 91a is pivoted and closed from the position shown by the solid line in the figure to the position shown by the two-dot chain line. In the closed state, the edges of the barrier plates 91a, 91a are brought into close contact with each other by the restoring force of the return spring 91h, and these are reliably closed.

That is, due to the above-described rise and fall of the photographing lens unit 19, the operating rod 91b is guided by the guide groove 91d and performs a reciprocating linear movement. This reciprocating movement opens and closes the barrier plate 91a.

In this embodiment, the operating rod 91b is shown to perform a reciprocating linear motion, but the reciprocating motion may be a circular motion or other motion.

〔Effect of the invention〕

As explained above, according to the instant camera barrier according to the present invention, since the barrier plate is opened and closed in conjunction with the operation of retracting a part of the camera and the operation of pulling it out to the shooting position, the barrier plate can be opened and closed manually. There is no need to open and close the plate, and an instant camera with good operability can be provided. Moreover, when a part of the camera such as a photographic lens unit is pulled out to the photographing position, the barrier is reliably opened and ready for photographing, and when it is retracted, the barrier is reliably closed.

Therefore, for example, the photographer does not need to confirm that the barrier is open when taking a picture, and does not miss a photo opportunity.

What's more, since the retracting and withdrawing operations are performed by motors, all you have to do is operate the main switch, etc.
There is no need to manually pull out the photographic lens unit etc. to the photographing position.

[Brief explanation of drawings]

The drawings show preferred embodiments of the instant camera according to the invention. Figure 1 is a partially omitted cross-sectional view of the right side of the photographing lens unit to explain the opening and closing of the barrier, showing the state in which it is used for photographing, and the barrier in the closed state is also shown as an imaginary line. be. FIG. 2 is a schematic perspective view for explaining the structure of the barrier. FIG. 3 is a front view showing the photographing lens unit section in a state in which it is used for photographing. FIG. 4 is a partially exploded perspective view showing the outline of the internal structure of this instant camera. FIG. 5 is a perspective view showing the external appearance, with solid lines showing the stored state and imaginary lines showing the state used for photographing. FIG. 6 is a front view of the stored state, and FIG. 7 is a front view of the state ready for photographing. Figure 8 is a right side view in the stored state, Figure 9 is a right side view in the state ready for photographing, Figure 10 is a left side view in the stored state, and Figure 11 is a right side view in the stored state.
The figure is a left side view in a state ready for photographing. FIG. 12 is a sectional view of the left side surface in the retracted state for explaining the power transmission system of the retracting operation. FIG. 13 is a sectional view of the left side for explaining the power transmission system for the storing operation and the film feeding operation, and shows the state used for photographing. 1st
FIG. 4 is a schematic plan cross-sectional view. FIG. 15 is a partially omitted plan view showing the power transmission system for the storage operation, and FIG. 16 is a partially omitted plan view showing the power transmission system for the film feeding operation. Fig. 17 and Fig. 18 show the loose in structure in the power transmission system for retracting operation, Fig. 17 is an exploded perspective view, and Fig. 1
Figure 8 is a left side view. 1 - Camera body 2... Grip part 3... Electric motor 4... Main body case 4a... Side plate
6... Delivery roller 9... Stopper pin
lO...Slider 10a...Rack 1
0d...Lock part 10e...Lock recessed part 11...
・Drive link 11a...Connecting rod 11b...
Guide pin 12...Followed link 13...Top plate 15...Operation plate 16...Mirror cover 1
7... Mirror 18... Lens frame 18a.
...Protrusion part 19...Photographing lens unit 19
a...Photographing lens 21...Pinion gear 22.
23, 24, 25, 26. 27, 28, 29, 30.3
1... Gear 32... Planetary gear train 33... Sun gear 34... Rocking arm 35... Planetary gear 41... First gear 42... Second gear 43...
... Third gear 44... Drive gear 45... Fan-shaped first gear 46... Fan-shaped second gear 51... Delivery gear 51a... Operating pin 52... Cam drum 53... Control lever 54...Switch
55...Claw 61...Lock member 61
e...Lock pin 70...Film pack 71...
- Film 81... Actuation lever 81e... Locking protrusion 81f... Locking pin 82... Control member 83... Switching operation lever 84... Main switch 8
5a...Brush 85b...Encoder 91
...Barrier 91a...Barrier plate 9
1b... Operating rod (guide member) Pl... Storing position P2... Shooting position Figure 5 Figure 7 Figure 8 Figure 9 Figure 11 Figure 18 Procedure amendment document 1. Display of the case 1999 Patent Application No. 123891 2, Name of the invention Instant camera barrier 3, Person making the amendment Relationship to the case Patent applicant 6, Subject of the amendment "Column for detailed explanation of the invention in the specification" , "Drawings" 7. Contents of the amendment ° ゛As per the attached sheet 6 Contents of the amendment (1) From line 8 to line 15 of page 25 of the specification, it is stated that ``1 actuation lever 81...'' . . . is allowed."
The control member 82, which has been restrained by the locking protrusion 81e of 1, is allowed to move to the left in FIG. Due to the force of the movement, the stopper pin 9 and the stopper protrusion 8
2e, so the control member 82 does not operate.'' (2) Similarly, from line 7 to line 10 on page 26, it says, “This sun gear 33...
"Since an appropriate frictional force acts between the sun gear 33 and the swinging arm 34, the swinging arm 34 also tries to rotate in the same direction. Therefore, the above-mentioned stopper bin 9 and the stopper protrusion 82e is eliminated.Therefore, the control member 82 also retreats due to the restoring force of the return spring 82c.Therefore, the stopper protrusion 82e of the control member 82 is attached to the swing arm 34. Since the swing arm 34 is retracted from the rotation range of the provided stopper pin 9, the swing arm 34 is allowed to rotate counterclockwise in FIG.
5 is meshed with the first gear 41, so the correction is made as follows. (3) Figures 12 and 13 of the drawings shall be corrected as shown in the attached sheet. that's all

Claims (1)

[Scope of Claims] It has a mechanism that sends the film out from the camera body after the release, and a part of the camera is pulled out and placed at a shooting position for shooting when shooting, and is appropriately stored in the camera body when not shooting. In an instant camera having a mechanism, the operation of retracting and pulling out a part of the camera to the photographing position is performed by the power of a motor, and the reciprocating movement is performed in conjunction with the retracting operation and the operation of pulling out and moving the part to the photographing position. A barrier for an instant camera, characterized in that a guide member is provided, and the barrier plate is opened and closed by reciprocating movement of the guide member.