JPS62260128A - Miniature camera - Google Patents

Abstract

PURPOSE:To surely prevent double exposure, defective winding, or the like and attain a satisfactory picture quality by pulling back a slide plate by the elastic force of a sliding spring and hooking a shutter operating projection part at a part to be moved of a shutter piece to open an exposure hole for a prescribed time by the shutter piece. CONSTITUTION:Simultaneously with release of the elastic force of a push-back spring 17 due to a detaining projection part 13 of a slide plate 10, a shutter button body 15 is slided by the push-back spring 17 and a detaining block part 16 is detained by the detaining projection part 13 of the slide plate 10. When the shutter button body 15 is depressed against the elastic force of the push-back spring 17, the detection between the detaining block part 16 and the detaining projection part 13 is released. A shake plate 5 is shaken by a shake plate pressing piece 20 against the elastic force of a sliding spring 11, and a shutter operating projection part 3 is detained at a part 35a to be moved of a shutter piece 35, and the shutter piece 35 opens an exposure hole 37 for a prescribed time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a small camera for a so-called 110-inch film cartridge.

(Prior Art) Conventionally, in this type of small camera, the problem has been how to downsize the camera itself while maintaining sufficient image quality and preventing problems such as double exposure and poor winding. There are challenges.

(Problems to be Solved by the Invention) In other words, miniaturizing the camera itself increases the number of structural limitations such as the film winding structure and the shutter operating mechanism, leading to problems such as double exposure and poor winding. There were drawbacks such as the tendency for mechanical malfunctions to occur.

[Structure of the Invention] (Means for Solving the Problems) Therefore, the present invention provides a small camera using a film cartridge B, in which a film fixed to a perforation 41 of a film 40 of the film cartridge B is provided. A shutter operating piece 1 having a locking protrusion 2, a swinging plate 5 to which the shutter operating piece 1 is pivotally attached via a mounting pin 4, and a swinging plate 5 that swings via a shaft pin 6. A shutter button body 15 includes a sliding plate 10 that is pivotally attached to the camera body A, and a locking block 16 that is removable from a locking protrusion 13 of the sliding plate 10 that is slidably attached to the camera body A. , and a shutter piece 35 which is swung by the shutter actuating protrusion 3 of the shutter actuating piece 1 are provided. The shutter actuating piece 1 is caused to move as the film 40 is wound by locking the film locking protrusion 2 to the perforation 41 of the film 40, and the swinging plate 5 and the sliding plate 10 move the shutter actuating piece 1. It is also formed to slide against the elastic force of the sliding spring 11.

It is formed so that the elastic force of the push-back spring 17 can be released by the locking protrusion 13 when the sliding plate 10 slides. The shutter button body 15 is slid by a push-back spring 17, and a locking block portion 16 is formed to be locked to a locking protrusion 13 of the sliding plate 10. Further, by pressing the shutter button body 15 against the elastic force of the push-back spring 17, the locking state between the locking block portion 16 and the locking protrusion 13 is released, and the swinging plate 5 swings. The sliding plate 10 is swung by the oscillating plate pressing piece 20 against the elastic force of the moving spring 7, and the sliding plate 10 is pulled back by the elastic force of the sliding spring 11, and the shutter actuating protrusion 3 moves against the shutter piece. By latching onto the driven portion 35a of 35 and configuring the shutter piece 35 to open the exposure hole 37 for a predetermined period of time, the above-mentioned difficulties can be solved.

(Function) According to the above-described means, when the film 40 of the film cartridge B is wound up by the winding dial 30, the film locking protrusion 2 of the shutter actuating piece 1
is locked in the perforation 41 of the film 40, and the shutter actuating piece 1 moves to the right side together with the film 40, and as the shutter actuating piece 1 moves, the rocking plate 5 and the sliding plate 10 are moved by the elastic force of the sliding spring 11. It slides to the right against the force. The locking protrusion 13 of the sliding plate 10 and the locking block portion 16 of the shutter button body 15 contact surface 1.
When the contact state with 6a is released, the push-back spring 1
7 is released, the shutter button body 15 is slid backward, the locking block portion 16 is locked to the locking protrusion 13, and the sliding plate 10 is released by the resilient force of the sliding spring 11. At the same time, the stopper actuating protrusion 18 of the shutter button body 15 swings the dial stopper 25 and causes the locking pawl 26 to engage the locking teeth 31 of the winding dial 30. The shutter is set by locking and preventing rotation of the winding dial 30.

Then, when the shutter button body 15 is pressed forward, the locking state between the locking block portion 16 and the locking protrusion 13 is released, and the swing plate pressing piece 20 provided on the shutter button body 15 is moved forward. While the tip is locked in the locking recess 9 of the rocking plate 5, the rocking plate 5 is swung forward to release the locked state between the film locking protrusion 2 and the perforation 41, and the shutter is operated. The piece 1 is moved forward, and the sliding plate 10, the rocking plate 5, and the shutter actuating piece 1 are pulled back to the left side by the elastic force of the sliding spring 11. At this time, the shutter actuating protrusion 3 of the shutter actuating piece 1 is latched onto the driven part 35a at the upper end of the shutter piece 35, and swings the shutter piece 35 against the elastic force of the spring 36. By opening the exposure hole 37 for a predetermined time at 35, the film 40 is exposed.

In addition, after the shutter piece 35 is swung (or during the oscillation), the shutter actuating piece 1 is swung backward together with the oscillating plate 5 by the elastic force of the oscillating spring 7, and returns to the initial position. do.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

A in the figure is a camera body for a film cartridge B, which is equipped with a shutter operating mechanism S.

The shutter actuating mechanism S includes a shutter actuating piece 1 having a film locking protrusion 2 at the rear end that is locked to a perforation 41 of a film 40 of a film cartridge B, and a shutter actuating piece 1 that is connected to a mounting bin 4 through a mounting bin 4. A rocking plate 5 is pivotally attached to the central portion, a sliding plate 10 is pivotally attached to the left end portion of the rocking plate 5 through a shaft pin 6, and The shutter button body 15 is provided with a locking block portion 16 at the front end that is removably locked to a locking projection portion 13 provided at the right end portion, and the shutter actuating projection portion 3 at the end of the shutter actuating piece 1rtJ is used to swing the shutter button body 15. A shutter piece 35 that can freely open the exposure hole 37 for a predetermined period of time, and a locking claw portion 26 that can be freely locked to the locking tooth portion 31 of the winding dial 30 by the stopper operation protrusion 18 of the shutter button body 15 are provided at the tip. It is composed of a dial stopper 25 and a dial stopper 25.

The shutter operating piece 1 has a film locking protrusion 2 at its rear end, a shutter operating protrusion 3 at its front end, and is attached to a swing plate 5 via a mounting pin 4 in the center.

The left end portion of the rocking plate 5 connects to the moving plate 1 via the shaft pin 6.
It is swingably attached to the left end portion of 0, and a swinging spring 7 applies an elastic force in a direction to swing the right end portion rearward. At the right end portion, a shaft 8 is provided to protrude downward, and a locking recess 9 in which the tip portion of the swing plate pressing piece 20 can be locked is provided.

The sliding plate 10 moves l! in the left and right direction. It is attached to the camera body A so as to be freely JvJ, and is biased by a sliding spring 11 in a direction to slide toward the left. Further, a shaft guide hole 12 for guiding the shaft 8 of the rocking plate 5 is provided in the right glass portion, and a locking protrusion 13 is provided protrudingly provided in the right end portion.

The shutter button body 15 is attached to the camera body A so as to be slidable in the front and rear directions, and is supported by a push-back spring 1.
7 applies a resilient force in the direction of sliding rearward, and a locking block portion 16 that is removably locked to the locking protrusion 13 of the sliding plate 10 is projected at the front end portion. The rear end surface of the locking block portion 16 becomes a contact surface 16a that prevents the shutter button body 15 from moving backward while it is in contact with the locking protrusion 13. A stopper operating protrusion 18 is provided protrudingly, and a swing plate pressing piece 20
is attached so that it can swing freely.

In addition, 15a is a pressing part of the shutter button body 15 that protrudes rearward from the camera body A, and 21 is a rocking plate pressing piece 2.
This is a spring that elastically biases the oscillator 0 toward the swing plate 5.

The dial stopper 25 is swingably attached to the camera body A via a shaft portion 25a, and its base end portion is formed in a substantially U-shape, and is arranged so as to sandwich the stopper actuating protrusion portion 18 from the front. As the stopper operation protrusion 18 moves, the locking pawl 26 at the tip is releasably locked to the locking teeth 31 of the winding dial 3o.

The winding dial 30 has a winding drive wheel 32 disposed below the locking teeth 31, which meshes with the winding driven gear 42 of the film cartridge B housed in the camera body A and enables winding of the film 40. The tip of the anti-reverse claw piece 33 is locked to the locking tooth portion 31.

The shutter piece 35 is provided with a movable part 35a at the upper end, and is swingably attached to the camera body via a shaft part 35b.
A resilient force is applied by a spring 36 so that the exposure hole 37 is always covered.

In the figure, A1 is a back cover that opens and closes the film cartridge accommodating portion of the camera body A, and A2 is a lens disposed in front of the exposure hole 37.

By the way, the shapes and sizes of the camera body A, shutter operating piece 1, rocking plate 5, sliding plate 10, shutter button body 15, dial stopper 25, winding dial 30, shutter piece 35, etc. are those of the illustrated example. It can be set freely as appropriate without being limited.

Further, the opening time of the exposure hole 37 due to the swinging of the shutter piece 35 is set to, for example, 1/120 seconds, but is not limited to this and can be set freely as appropriate.

[Effects of the Invention] Accordingly, the present invention provides, in a small camera using a film cartridge B, a shutter actuating piece 1 equipped with a film locking protrusion 2 that is locked to a perforation 41 of a film 40; A rocking plate 5 to which this shutter actuating piece 1 is pivotally attached, a sliding plate 10 to which this sliding plate 5 is pivotably pivotally attached, and a locking projection 13 of this sliding plate 10 that engages and disengages. Shutter button body 1 with a flexible locking block part 16
5 and a shutter piece 35 that is swung by the shutter actuating protrusion 3 of the shutter actuating piece 1. When the film locking protrusion 2 locks into the perforation 41 of the film 40, the shutter actuating piece 1 locks the film 40. The swing plate 5 and the sliding plate 10 move together with the winding, and the sliding spring 11 moves as the shutter actuating piece 1 moves.
The locking protrusion 13 of the sliding plate 10 slides against the elastic force of the sliding plate 10.
When the elastic force of the push-back spring 17 is released by
By pressing the shutter button body 15 against the elastic force of the push-back spring 17, the locking state between the locking block portion 16 and the locking protrusion 13 is released, and the locking state is released. The plate 5 is swung by the oscillating plate pressing piece 20 against the elastic force of the oscillating spring 7, the sliding plate 10 is pulled back by the elastic force of the sliding spring 11, and the shutter operating protrusion 3 is Since the shutter piece 35 is hooked to the driven part 35a of the shutter piece 35 and opens the exposure hole 37 for a predetermined period of time, each operation is performed reliably and accurately, and double exposure and defective winding are avoided. It can definitely be prevented. In addition, the shutter can be set automatically by simply rotating the winding dial 30, and the shutter can be released by simply pressing the shutter button body 15, making photography extremely easy.Furthermore, the camera itself can be made compact. Moreover, the configuration is simple.

Furthermore, due to the dial stopper 25, when the shutter is set, the winding dial 3o does not rotate at all, and it is possible to reliably prevent the film 40 from being wound too much, and the film 40 is not wasted, making it highly economical. becomes. Furthermore, since the pressing portion 15a of the shutter button body 15 largely protrudes in the direction of the camera body A, it becomes easy to determine that the shutter is set.

[Brief explanation of drawings]

The drawings illustrate the present invention, and FIGS. 1 to 3 are schematic plan views showing the operating state of the shutter operating mechanism, FIG. 4 is a cross-sectional plan view, and FIG. 5 is a partially cutaway front view. A... Camera body, A1... Back cover, A2... Lens, S... Shutter operating mechanism, 1... Shutter operating piece, 2... Film locking protrusion, 3... Shutter operating protrusion, 4... Mounting pin, 5... Rocking plate, 6... Shaft bottle, 7... Rocking spring, 8... Shaft, 9... Locking recess, 10...Sliding plate, 11...Sliding spring, 12
... Shaft guide hole, 13... Locking protrusion, 15... Shutter button body, 15a... Pressing part, 16... Locking block part, 16a... Contact surface, 17... ...Push-back spring, 18...Stopper operating protrusion, 20.
... Rocking plate pressing piece, 21... Spring, 25...
Dial stopper, 25a... Shaft portion, 26... Locking claw portion, 30... Winding dial, 31... Locking tooth portion, 32
... Winding drive m wheel, 33 ... Reversal prevention claw piece, 35
... Shutter piece, 35a... Driven part, 35b...
・Shaft part, 36... Spring, 37... Exposure hole, B
...Film cartridge, 40...Film, 4
1... Perforation, 42... Winding driven gear. Patent applicant: Suda Metal Manufacturing Co., Ltd. No. 5
Map required 1 map domain 2 map 3 map town 4 map procedure? Ho Zhenggen (spontaneous) November 20, 1985 1, Indication of the case, Patent Application No. 102898 of 1988 2, Name of the invention: Small camera 3, Person making the amendment Relationship with the case Special amendment applicant/Address
4-40-15 Higashimukojima, Sumida-ku, Tokyo Name: Co., Ltd.
Sudakin mtt factory representative Su 1) Katabe FAX G ff Iff 03 (616) 5708
5. Subject of amendment (1) Clear statement (2) Drawing 6. Contents of amendment (1) Clear III! shall be amended as per the attached amended statement. (2) Figures 6 and 7 will be added to the drawings as per the attached drawings. 7. List of attached documents (1) Amended statement
1 copy (2) drawings
One or more corrected details = 1. Title of the invention Small camera 2. Claim 1. Shutter operation in a small camera using a film cartridge, which is provided with a film locking protrusion that locks into a perforation of the film. The shutter actuating piece is pivotally attached to the 1st shift plate, and the swinging plate is slidably pivoted! ! ! ! The shutter button body includes a moving plate, a locking block portion that can be freely engaged and detached from a locking protrusion of the sliding plate, and a shutter piece that is swung by the shutter actuating protrusion of the shutter actuating piece. By locking the film locking protrusion to the perforation, the shutter actuating piece moves as the film is wound up, and the rocking plate and sliding plate slide against the elastic force of the sliding spring as the shutter actuating piece moves. The shutter button body slides due to the push-back spring as the elastic force of the push-back spring is released by the locking protrusion of the sliding plate, and the locking block portion is locked with the locking protrusion of the sliding plate. is,
By pressing the shutter button body against the elastic force of the push-back spring, the locking state between the locking block part and the locking protrusion is released, and the swing plate is moved by the elastic force of the swing spring. Conversely, the sliding plate is swung by the pressing piece of the oscillating plate, the sliding plate is pulled back by the elastic force of the sliding spring, the shutter actuating protrusion is latched onto the driven part of the shutter piece, and the shutter piece moves into the exposure hole. A small camera characterized in that the camera is configured to be opened for a predetermined time. 3. Detailed Description of the Invention [Object of the Invention] (Field of Industrial Application) The present invention relates to a small camera for a so-called 110-inch film cartridge. (Prior Art) Conventionally, with this type of small camera, the problem has been how to make the camera itself smaller while maintaining sufficient image quality and preventing double exposure and poor winding. There are challenges. (Problems to be Solved by the Invention) In other words, miniaturizing the camera itself means that there are many structural limitations such as the film winding mechanism and the shutter operating mechanism, which leads to problems such as double exposure and poor winding. There are disadvantages such as malfunctions on the tank are more likely to occur and it is difficult to maintain satisfactory image quality. [Structure of the Invention] (Means for Solving the Problems) Therefore, the present invention provides a small camera using a film cartridge B, in which a film fixed to a perforation 41 of a film 40 of the film cartridge B is provided. A shutter operating piece 1 having a locking protrusion 2, a swinging plate 5 to which the shutter operating piece 1 is pivotally attached via a mounting pin 4, and this swinging plate 5 swinging via a shaft pin 6. Can be freely pivoted! ll! A shutter button body 15 that includes a locking plate 10 and a locking block portion 16 that can be freely engaged and detached from a locking protrusion 13 of the sliding plate 10 that is slidably attached to the camera body A.
and a shutter piece 35 which is swung by the shutter actuating protrusion 3 of the shutter actuating piece 1. Then, the shutter actuating piece 1 is formed so as to move as the film 40 is wound by locking the film locking protrusion 2 to the perforation 41 of the film 40,
The rocking plate 5 and the sliding plate 10 are formed so as to slide against the elastic force of the sliding spring 11 as the shutter operating piece 1 moves. Further, as this sliding plate 10 slides, the elastic force of the push-back spring 17 caused by the locking protrusion 13 is released, and the shutter button body 15 is slid by the push-back spring 17, and the locking block The portion 16 is formed to be locked to the locking protrusion 13 of the sliding plate 10. Also, the spring 17 pushes back the shutter button body 15.
By pressing against the elastic force of the locking block portion 16
The locking state between the locking protrusion 13 and the locking protrusion 13 is released, and the rocking plate 5
The rocking plate pressing piece 2 moves against the elastic force of the rocking spring 7.
0, the M moving plate 10 is pulled back by the elastic force of the sliding spring 11, the shutter operating protrusion 3 is engaged with the driven part 35a of the shutter piece 35, and the shutter piece 35 is exposed. By configuring the hole 37 to be open for a predetermined period of time, the above-mentioned difficulties can be solved. (Function) According to the above-described means, when the film 40 of the film cartridge B is wound up by the winding dial 30, the film locking protrusion 2 of the shutter actuating piece 1
is locked to the perforation 41 of the film 4o, and the shutter actuating piece 1 moves to the right side together with the film 4o, and as the shutter actuating piece 1 moves, the swing plate 5
And the sliding plate 10 slides to the right against the elastic force of the sliding spring 11. When the contact between the locking projection 13 of the sliding plate 10 and the contact surface 16a of the locking block 16 of the shutter button body 15 is released, the elastic force of the push-back spring 17 is released. Shutter button body 15
slides backward, and the locking block portion 16 engages the locking protrusion 13.
This prevents the sliding plate 10 from being pulled back to the left side by the elastic force of the sliding spring 11, and also prevents the stopper operating protrusion 18 of the shutter button body 15 from being pulled back to the left side by the elastic force of the sliding spring 11.
swings the dial stopper 25, locks the locking pawl 26 with the locking teeth 31 of the winding dial 30, prevents rotation of the winding dial 3o, and sets the shutter. Then, when the pressing part 15a is pressed and the shutter button body 15 is slid forward, the locking state between the locking block part 16 and the locking protrusion 13 is released, and the locking state provided on the shutter button body 15 is released. The rocking plate pressing piece 2o swings the rocking plate 5 forward while keeping its tip locked in the locking recess 9 of the rocking plate 5, so that the film locking protrusion 2 and the perforation 41 are connected to each other. The locked state is released and the shutter actuating piece 1 moves forward, and the sliding plate 10, the rocking plate 5, and the shutter actuating piece 1 are pulled back to the left side by the elastic force of the sliding spring 11. At this time, the shutter actuating protrusion 3 of the shutter actuating piece 1 is latched onto the driven part 35a at the upper end of the shutter piece 35, and swings the shutter piece 35 against the elastic force of the spring 36. opens the exposure hole 37 for a predetermined period of time, and the film 40 is exposed. (Example) The present invention will be described below with reference to illustrated examples. A in the figure is a camera body for a film cartridge B, which is equipped with a shutter operating mechanism S. The shutter actuating mechanism S includes a shutter actuating piece 1 having a film locking protrusion 2 at its rear end that is locked to a perforation 41 of a film 40 of a film cartridge B, and a shutter actuating piece 1 that is connected to a mounting bin 4. a swinging plate 5 which is pivotally attached to the central portion of the swinging plate 5; a sliding plate 10 whose left end portion of the swinging plate 5 is pivotably pivoted to the left end portion thereof via a shaft pin 6; The shutter button body 15 has a locking block portion 16 at its front end that is removably locked to a locking projection portion 13 provided at the right end portion of the shutter button body 15, and the shutter actuating projection portion 3 at the front end of the shutter actuating piece 1 swings. A shutter piece 35 that can open the exposure hole 37 for a predetermined time when forced to do so.
and the stopper operating protrusion 1 of the shutter button body 15
8, a dial stopper 2 is provided with a locking claw portion 26 at its tip that can be freely locked to the locking tooth portion 31 of the winding dial 30.
It consists of 5. The shutter actuating piece 1 is provided with a film locking protrusion 2 at the rear end, and a shutter actuating protrusion 3 at the tti end,
It is attached to the sliding plate 5 via the attachment pin 4 in the central part. The left end portion of the rocking plate 5 connects to the sliding plate 1 through the shaft pin 6.
It is swingably attached to the left end portion of 0, and a swinging spring 7 applies an elastic force in a direction to swing the right end portion rearward. Further, at the right end portion, a shaft 8 is provided to protrude downward, and a locking recess 9 is provided. The sliding plate 10 is attached to the camera body A so as to be slidable in the left-right direction, and is biased by a sliding spring 11 so as to slide toward the left. Further, a shaft guide hole 12 for guiding the shaft 8 of the rocking plate 5 is provided in the right glass portion, and a locking protrusion 13 is provided protrudingly provided in the right end portion. The sliding spring 11 may be a torsion coil spring as shown in FIGS. 1 to 3, or may be a torsion coil spring as shown in FIGS.
A retraction coil spring as shown in FIG. 7 may also be used. The shutter button body 15 is attached to the camera body A so as to be slidable in the front and rear directions, and is supported by a push-back spring 1.
7 applies an elastic force in the direction of sliding rearward, and a locking block portion 16 that is removably locked to the locking protrusion 13 of the sliding plate 10 is protruded from the front end portion. The rear end surface of the locking block portion 16 becomes a contact surface 16a that prevents the shutter button body 15 from moving rearward while the front end of the locking projection portion 13 is in contact with the rear end surface. Moreover, when it comes to invasion,
A stopper operating protrusion 18 is provided in a protruding manner, and a swing plate pressing piece 20 is swingably mounted so that the swing plate 5 is elastically biased via a spring 21. This rocking plate pressing piece 20 is formed so that its tip portion can be locked in the locking recess 9 of the rocking plate 5. Reference numeral 15a in the figure indicates a pressing part that is pressed when the shutter button body 15 is slid. For example, in FIGS. 1 to 3, the rear end of the shutter button body 1 is located behind the camera body A. This protruding portion is defined as a pressing portion 15a. In addition, in FIG. 7, a pressing piece 19 is formed whose rear end is pivoted so that it can freely swing up and down, and the upper part of this pressing piece 19 projects upward from the camera body A. Form it like this,
This protruding portion is defined as a pressing portion 15a. That is, by pressing the pressing portion 15a downward, the shutter can be released without taking a picture by hand. Specifically, when the pressing portion 15a is pressed downward, the front end portion of the pressing piece 19 presses from above the inclined surface 19b of the engaging piece 19a whose right glass portion is pivotally supported on the camera body A. , the engagement piece 19a is swung forward against the elastic force (pullback elastic force) of the push-back spring 17, and is inserted into an engagement hole formed on the left side of the engagement piece 19a. The shutter button body 15 is configured to slide forward via the engaging protrusion 15b. The dial stopper 25 is swingably attached to the camera body via a shaft portion 25a, and its base end portion is formed in a substantially U-shape. The locking claw portion 26 at the tip is configured to removably lock onto the locking tooth portion 31 of the winding dial 30 as the operating protrusion 18 moves. The winding dial 30 has a winding drive gear 32 disposed below the locking teeth 31, which meshes with the winding gear 42 of the film cartridge B housed in the camera body A and enables winding of the film 40. The tip of the anti-reverse claw piece 33 is locked to the locking tooth portion 31. The shutter piece 35 has a driven part 35a at the upper end, and is swingably attached to the camera body A via a shaft part 35b.
A resilient force is applied by the spring 36 so as to place it in a position covering the constant exposure 7L37. In the figure, 38 indicates that the long side of the ml edge is the abutting surface 38.
A guide projection 38 is shown as a substantially oblong rectangular shape in plan view, and is formed on the camera body A so that the lower part of the shaft 8 of the rocking plate 5 moves along its peripheral edge. That is, as shown in FIG. 6, the relationship between the guide protrusion 38 and the shaft 8 of the rocking plate 5 is such that the sliding plate 10 is positioned on the left side by the sliding spring 11, and the rocking plate 5 is positioned on the left side due to the sliding spring 11. When the shaft 8 is in the rearwardly swung position by the swiveling spring 7 (see FIG. 1), the shaft 8 is located at the lower left corner of the guide protrusion 38. Then, the film 40 is wound up by the winding dial 30, and the rocking plate 5 and the sliding plate 10 slide to the right through the shutter operating piece 1 against the elastic force of the sliding spring 11, and are pushed. When the elastic force of the return spring 17 is released and the locking block portion 16 is locked to the locking protrusion 13 (so-called shutter set state, see FIG. 2), the shaft is 8 is located at the lower right corner of the guide protrusion 38. Furthermore, the shutter button body 15 is pressed by pressing the pressing part 15a.
At the same time, the swing vJ temporary pressing piece 20 swings the swing plate 5 forward, and the shutter actuating piece 1 moves forward, causing the locking block part 16 and the locking protrusion 13 to move forward. When the locked state is about to be released (see FIG. 3), the shaft 8 is located at the lower left corner of the guide protrusion 38. Further, the locking state between the locking block portion 16 and the locking protrusion 13 is released, and the sliding plate 10, the swing plate 5, and the shutter actuating piece 1 are moved to the left by the elastic force of the sliding spring 11. , the shutter actuating protrusion 3 engages the driven part 35a, causing the shutter piece 35 to swing against the elastic force of the spring 36, and as the shutter actuating protrusion 3 moves, the exposure hole 37 is gradually opened. When it is fully opened (see the dashed line in Fig. 5), the shaft 8 is aligned with the guide protrusion 3.
8 is located at the upper left corner of the screen. Moreover, while the shaft 8 moves from the upper left corner of the guide protrusion 38 to just before the lower left corner of the guide protrusion 38, the exposure hole 3
7 is maintained in the fully open state and when the shaft 8 reaches the lower left corner of the guide protrusion 38, the engagement between the shutter operating protrusion 3 and the driven part 35a is released and the shutter piece 35 closes the exposure hole 37. . That is, the shaft 8 is connected to the guide protrusion 38
From the upper left corner to the lower left corner, the exposure hole 37 is kept fully open by the shutter piece 35, so that the film 40 is evenly exposed. By the way, the contact surface portion 38a is I! f! The locking state between the locking protrusion 13 of the moving plate 10 and the locking block 16 of the shutter button body 15 is released, and the locking recess 9 of the swing plate 5 and the tip of the swing plate pressing piece 20 are released. When the locked state is released, the resilient force of the swinging spring 7 prevents the swinging plate 5 from swinging backwards, and the driven part 35a of the shutter piece 35 and the shutter Operating protrusion 3
This ensures that the latched state can be maintained. In the figure, A1 is an H lid that opens and closes the film cartridge storage portion of the camera body A, and A2 is a lens disposed in front of the exposure hole 37. Note that the camera body A1 has a shutter operating piece 1, a rocking plate 5, a sliding plate 10. Shutter button body 15, dial stopper 25, winding dial 30. The specific shape, size, arrangement position, etc. of the shutter piece 35, guide protrusion 38, etc. are not limited to the illustrated example and can be freely set as appropriate. Further, the opening time of the exposure hole 37 due to the swinging of the shutter piece 35 is set to, for example, 1/120 seconds, but is not limited to this and can be set freely as appropriate. [Effects of the Invention] Therefore, the present invention provides a small camera using a film cartridge B, which includes a shutter actuating piece 1 having a film locking protrusion 2 that is locked to a perforation 41 of a film 4o; A swing plate 5 on which the shutter operating piece 1 is pivoted, a sliding plate 10 on which the swing plate 5 is swingably pivoted, and a locking protrusion 13 of the activation plate 10 that can be freely engaged and detached. Shutter button body 1 equipped with a locking block portion 16
5 and a shutter piece 35 that is swung by the shutter actuating protrusion 3 of the shutter actuating piece 1. When the film locking protrusion 2 locks into the perforation 41 of the film 40, the shutter actuating piece 1 locks the film 40. The swing plate 5 and the sliding plate 10 move together with the winding, and the sliding spring 11 moves as the shutter actuating piece 1 moves.
The locking protrusion 13 of the sliding plate 1o slides against the elastic force of the sliding plate 1o.
When the elastic force of the push-back spring 17 is released by
By pressing the shutter button body 15 against the elastic force of the push-back spring 17, the locking state between the locking block portion 16 and the locking protrusion 13 is released, and the locking state is released. The plate 5 is swung by the oscillating plate pressing piece 20 against the elastic force of the oscillating spring 7, the sliding plate 10 is pulled back by the elastic force of the sliding spring 11, and the shutter operating protrusion 3 is Since the shutter piece 35 is hooked to the driven part 35a of the shutter piece 35 and opens the exposure hole 37 for a predetermined period of time, each operation is performed reliably and accurately, and double exposure and defective winding are avoided. Not only can this be reliably prevented, but also the image quality that can be maintained can be obtained. In addition, the shutter can be set automatically by simply rotating the winding dial 30, and the shutter can be released by simply pressing the shutter button body 15, making photography extremely easy.Furthermore, the camera itself can be made compact. Moreover, the configuration is simple. Furthermore, due to the dial stopper 25, when the shutter is set, the winding dial 30 does not rotate at all, and it is possible to reliably prevent the film 40 from being wound too much, and the film 40 is not wasted, which is also highly economical. becomes. Moreover, since the pressing portion 15a of the shutter button body 15 largely protrudes outward from the camera body A, it becomes easy to determine that the shutter is set. 4. Brief description of the drawings The drawings illustrate the present invention, and FIGS. 1 to 3 are schematic plan views showing the operating state of the shutter operation mechanism, FIG. 4 is a cross-sectional plan view, and FIG. 5 is a partial view. FIG. 6 is a schematic plan view showing the state of movement of the axis of the rocking plate, and FIG. 7 is a schematic plan view of a shutter operating mechanism in another embodiment. A... Camera body, A1... Back cover, A2... Lens, S... Shutter operating mechanism, 1... Shutter operating piece, 2... Film locking protrusion, 3... Shutter operating protrusion, 4... Mounting pin, 5... Rocking plate, 6... Shaft bottle, 7... Rocking spring, 8... Shaft, 9... Locking recess, 10...Sliding plate, 11...Sliding spring, 12
... Shaft guide hole, 13... Locking protrusion, 15... Shutter button body, 15a... Pressing part, 15b...
Engagement protrusion, 16... Locking block portion, 16a... Contact surface, 17... Push back spring, 18... Stopper operating protrusion, 19... Pressing piece, 19a... Engagement Joining piece, 19b... Inclined surface, 20... Rocking plate pressing piece, 2
1...Spring, 25...Dial stopper, 25a...Shaft portion, 2
6... Locking claw portion, 30... Winding dial, 31... Locking tooth portion, 32
... Winding drive gear, 33 ... Reversal prevention claw piece, 35
... Shutter piece, 35a... Driven part, 35b...
・Shaft portion, 36... Spring, 37... Exposure hole, 3
8... Guide protrusion, 38a... Contact surface portion, B...
Film cartridge, 40... Film, 41...
・Perforation, 42... Winding driven gear. Patent applicant Suda Metal Manufacturing Co., Ltd. Figure 6 Figure 7

Claims (1)

[Claims] 1. In a small camera using a film cartridge, a shutter actuating piece is provided with a film locking protrusion that is locked to a perforation of the film, a rocking plate to which this shutter actuating piece is pivotally mounted, and this rocking plate. A sliding plate to which the moving plate is pivotably attached, a shutter button body including a locking block portion that can be freely engaged and detached from a locking protrusion of the sliding plate, and a shutter actuation protrusion of the shutter actuation piece. The shutter actuating piece moves as the film is wound by locking the film locking protrusion to the perforation of the film, and the rocking plate and the sliding plate move as the shutter actuating piece moves. The shutter button body slides against the elastic force of the sliding spring, and as the elastic force of the push-back spring is released by the locking protrusion of the sliding plate, the shutter button body slides by the push-back spring, and the locking block portion is locked to the locking protrusion of the sliding plate, and by pressing the shutter button body against the elastic force of the push-back spring, the locking state between the locking block and the locking protrusion is released. The oscillating plate is swung by the oscillating plate pressing piece against the elastic force of the oscillating spring, the sliding plate is pulled back by the elastic force of the sliding spring, and the shutter operating protrusion is moved against the shutter piece. A small camera characterized in that the shutter piece is latched to a driven part of the camera to open an exposure hole for a predetermined period of time.