JP2000338583A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make distringuishable the turn-on state and turn-off state of a stroboscope device. SOLUTION: In the film unit with lens in which unexposed photographic film is assembled into a unit main body 1 and which is provided with a sliding operation piece 4 for the stroboscope device slidably attached by arrangement so as to be exposed from a front cover 2 attached to the front surface of the unit main body 1, the sliding direction of the sliding operation piece 4 and the peripheral surface of the sliding operation piece 3 of the front cover are varied so that the angle formed by them becomes θ.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lens-equipped film unit, and more particularly to a lens-equipped film unit with improved operability of a slide operation piece for turning on and off a strobe device.

[0002]

2. Description of the Related Art An example of a conventional film unit with a lens will be described with reference to FIG.

A film unit with a lens shown in FIG. 6 is assembled so as to surround a unit body on which various photographing functional parts are mounted by a front cover 101 and a rear cover (not shown).
02, the finder window 103 of the finder unit and the light emission window 104 of the stroboscope device are exposed. The unit body also has a release button 105.

Further, the front cover 101 of the film unit with a lens is provided with a slide operation piece 106 which is slid in the direction of the arrow shown in FIG. 6 to drive the strobe device on and off.

[0005]

However, in the case of the above-mentioned conventional film unit with a lens, the slide operation piece 106 is formed in the same direction as the front surface of the front cover 101 by using a simple slide mechanism for the front cover 101. It is only slidably mounted, and it is not clear whether or not there is a sliding state, so that it is not possible for the user of the film unit with the lens to clearly recognize the on state and the off state of the strobe device.

Further, in the case of a conventional film unit with a lens, when a large force is applied from the front of the slide operation piece 106, the slide mechanism of the slide operation piece 106 cannot reliably hold the slide operation piece 106. In some cases, the switch operation piece is deformed by the slide operation piece 106, and the strobe device cannot be stably and reliably turned on and off.

The present invention has been made in view of the above circumstances, and has mainly improved a slide mechanism of a slide operation piece.
An object of the present invention is to provide a lens-equipped film unit that clarifies an on state and an off state of a strobe device and ensures stable and reliable operability of a slide operation piece.

[0008]

According to the first aspect of the present invention,
A film unit with a lens having a slide operation piece for a strobe device slidably mounted in such a manner that an unexposed photographic film is incorporated in the unit body and is exposed from a front cover attached to the front surface of the unit body. The angle between the sliding direction of the piece and the peripheral surface of the sliding operation piece of the front cover is made different.

According to the present invention, the angle between the sliding direction of the slide operation piece and the peripheral surface of the slide operation piece of the front cover is made different from each other. The amount of exposure from the front cover surface increases, so that the on state of the strobe device can be clearly recognized.

According to a second aspect of the present invention, an unexposed photographic film is incorporated in a unit main body, and a slide operation piece for a strobe device which is slidably mounted so as to be exposed from a front cover mounted on a front surface of the unit main body. In the film unit with a lens provided, the slide operation piece is provided with a guide wall along the slide direction, and the unit main body is formed with a guide rail that engages with the guide wall along the slide direction of the slide operation piece. It is assumed that.

According to the present invention, the slide operation of the slide operation piece can be performed while the guide wall of the slide operation piece is engaged with the guide rail of the unit body, and stable and reliable operability of the slide operation piece can be secured. .

According to a third aspect of the present invention, an unexposed photographic film is incorporated in a unit main body, and a slide operation piece for a strobe device is slidably mounted so as to be exposed from a front cover mounted on a front surface of the unit main body. In the film unit with a lens provided, a slide guide piece having an engagement step portion extending along an extending direction from an end of the strobe device on the strobe switch side of the slide operation piece is extended, and a photographing lens hole of the front cover is provided. A guide rib is provided on the inside of the vicinity, with which the engaging step of the slide guide piece slides.

According to the present invention, the engaging step of the slide guide piece is brought into sliding contact with a guide rib provided inside the front cover in the vicinity of the taking lens hole to prevent the slide operation piece from swinging. The slide operation of the slide operation piece can be performed, whereby stable and reliable operability of the slide operation piece can be secured.

According to a fourth aspect of the present invention, there is provided a slide operation piece for a strobe device which is slidably mounted in such a manner that an unexposed photographic film is incorporated in a unit main body and is exposed from a front cover mounted on a front surface of the unit main body. In the film unit provided with a lens, a slide guide piece having an engagement step portion extending from a flash switch side end of the strobe device in the slide operation piece along an extending direction is provided between a main condenser located at a lower portion of the strobe device and a front side. A guide rib that extends into a wedge-shaped gap region formed by the cover and is provided inside the vicinity of the taking lens hole of the front cover with which the engaging step of the slide guide piece slides. is there.

According to the present invention, the operation of the third aspect of the present invention is exhibited, and the slide guide piece extends to the wedge-shaped gap region formed by the main condenser and the front cover located below the strobe device. As a result, the slide operation piece can be slid via the slide guide piece while preventing the slide operation piece from swinging and rattling, thereby ensuring stable and reliable operability of the slide operation piece. it can.

According to a fifth aspect of the present invention, in the film unit with the lens according to any one of the first to fourth aspects, a sliding direction of the slide operation piece intersects an optical axis of a photographing lens provided on the unit body. Direction.

According to the present invention, when the sliding direction of the slide operation piece is set to the direction intersecting with the optical axis of the photographing lens, the slide operation piece is linked with another component, for example, switching of the aperture. Operating force can be transmitted efficiently.

According to a sixth aspect of the present invention, in the film unit with a lens according to any one of the first to fifth aspects, the slide operation piece is engaged with the unit main body, and the slide operation piece is attached to the strobe. A slide operation piece restricting spring mechanism for forcibly restricting the apparatus to an ON position or an OFF position is provided.
According to the present invention, the slide operation piece restricting spring mechanism can forcibly restrict the position of the slide operation piece, whereby the slide operation piece stops at a halfway position between the ON position and the OFF position. Can be prevented, the operability of the slide operation piece can be improved, and unnecessary waste of battery due to erroneous operation of the slide operation piece can be avoided.

According to a seventh aspect of the present invention, in the film unit with the lens according to the sixth aspect, when the slide operation piece is at a position where the strobe device is turned on, the end of the slide operation piece is connected to the unit body. The slide operation piece restricting spring mechanism is configured so that the end of the slide operation piece that is moving from the position where the strobe device is turned on to the position where the strobe device is turned off is still in the unit body. The slide operation piece is moved to a position forcibly turned off from a position protruding from a side of the slide operation piece.

According to this invention, the slide operation piece regulating spring mechanism moves the slide operation piece in the middle from the ON position to the OFF position to the OFF position, so that the slide operation is more reliably performed. Unnecessary waste of battery due to erroneous operation of the piece can be avoided.

[0021]

Embodiments of the present invention will be described below in detail.

An embodiment of a film unit with a lens according to the present invention will be described with reference to FIGS.

FIG. 1 is an exploded perspective view of a film unit with a lens, FIG. 2 is a front view of a film unit with a lens without an external component when flash photography is not performed, and FIG. FIG. 4 is a cross-sectional view of the film unit with lens removed from below, and FIG. 5 is a longitudinal sectional view of the film unit with lens without the rear cover.

In FIG. 1, 1 is a unit body holding a film and mounted with various photographing mechanisms such as a shutter unit, a strobe unit and a winding mechanism, 2 is a front cover for covering the unit body 1 from the front, 3 is The rear cover covers the unit body 1 from behind.

Reference numeral 20 denotes a flash unit, and reference numeral 4 denotes a slide operation piece. By manually operating the slide operation piece 4, the strobe unit 20 is activated or the aperture is switched as described later.

The slide operation piece 4 is a strobe unit 2
The slide operation piece 4 is held together with the strobe unit 20 by being superimposed on the front cover 2 and further mounted on the front cover 2, and in the left-right direction (the length direction of the unit body 1)
It can slide freely.

As shown in FIG. 4, the surface of the peripheral area of the elongated hole 2a of the front cover 2 is formed so as to form an angle θ with the sliding direction of the slide operation piece 4.

The sliding direction of the slide operation piece 4 is determined by the photographing lenses L1 and L2 provided on the unit body 1.
The direction intersects the optical axis. Thus, when the slide operation piece 4 is interlocked with another component, for example, aperture switching, the operating force of the slide operation piece 4 can be efficiently transmitted to an aperture switching mechanism described later.

The slide operation piece 4 has a knob 4a, and this knob 4a is projected from an elongated hole 2a provided in the front cover 2, and the knob 4a is moved in the direction of the arrow with a fingertip to move the slide operation piece 4a. The off position shown in FIGS. 2 and 3,
It is displaced to two positions of the ON position.

The unit main body 1 has ribs 1a and 1a as two parallel guide rails, and guide walls provided on the upper and lower sides of the back surface of the slide operation piece 4 are provided with the ribs 1a and 1a.
And the slide operation piece 4 is slid.

As shown in FIGS. 1, 2 and 6, the slide operation piece 4 is provided with an engaging step 4f extending from the end on the side of the main switch piece 22 constituting the strobe switch along the extending direction thereof. Extends in the wedge-shaped gap region 30 formed by the outer periphery of the main condenser C located at the lower portion of the strobe unit and the front cover 2, and the photographing lens hole 2 b of the front cover 2 A guide rib 2c slidably contacting the engagement step 4f of the slide guide piece 4e is provided inside the vicinity.

On the printed circuit board 21 of the strobe unit 20, a main switch piece 22 for turning on the power of the strobe circuit and activating the strobe circuit is arranged. The main switch piece 22 is formed from a conductive metal plate, and has a forked portion at the tip.

Then, as shown in FIG. 4, the main switch piece 22 is pressed by a pressing rib 4b provided on the back surface of the slide operation piece 4, whereby the main switch piece 22 is pressed.
The two bifurcated portions at the ends contact the two conductive patterns on the printed circuit board 21 to turn on the power of the strobe circuit.

That is, when the slide operation piece 4 is slid to the left as shown in FIG. 2, the main switch piece 22 separates from the conductive pattern and the power supply of the strobe circuit is turned off. When the main switch piece 22 is slid to the right and the right end is protruded to the side of the unit body 1 and the side of the front cover 2 as shown in FIG. 3, the main switch piece 22 comes into contact with the conductive pattern and the power of the strobe circuit is turned on. .

Next, the internal structure of the film unit with a lens will be described with reference to FIGS. A reel 5 for winding a film is disposed in a roll film chamber 1c provided at one end of the unit body 1, and a patrone P is loaded in a patrone chamber 1d provided at the other end.

Before the photographing, the unexposed film F pulled out from the cartridge P is all wound around the reel 5, and at the time of photographing, the exposed film F is wound by winding the winding knob 6 shown in FIG. Is wound into the patrone P one frame at a time.

L1 and L2 are photographing lenses, and 1e is an exposure section for exposing a subject image on the film F by the photographing lenses L1 and L2 to form a photographing screen. A photographic image frame 1f having a predetermined opening in a frame shape is formed on the photographic lenses L1 and L2 side from the exposure unit 1e.

A shutter unit 10 is provided in the photographing frame 1f.
Is to be attached.

The shutter unit 10 includes the shutter base plate 1
1, shutter blades 12, two-photographing lenses L1 and L2 having a relatively bright F value, and two aperture holes 13a and 1
An aperture switching member 13 having 3b is held.

The photographing lenses L1 and L2 are inserted into the photographing lens holding frame 15, and the lens presser 16 is engaged with the photographing lens holding frame 15, whereby the photographing lenses L1 and L2 are
2 is held by the taking lens holding frame 15.

2 and 3, reference numeral 14 denotes an aperture 1 of the aperture switching member 13 with respect to the optical axes of the taking lenses L1 and L2.
A torsion coil spring (tumbler spring) that urges in two opposite directions to switch between 3a and 13b, one end 14a of which is engaged with a spring hook pin 13d of the aperture switching member 13 and the other end 14b Are engaged with the shaft 11c of the shutter base plate 11.

A projecting end 4g of a slide guide piece 4e extending from the slide operation piece 4 is engaged with an engagement pin 13e projecting below the aperture switching member 13.

Therefore, when the slide operation piece 4 is slid rightward from the state shown in FIG. 2, the aperture switching member 13 rotates counterclockwise against the urging force of the torsion coil spring 14, and rotates substantially in the center. The biasing direction is reversed at the moving position, and thereafter, it rotates counterclockwise by the biasing force of the torsion coil spring 14 and switches to the large aperture 13a as shown in FIG. At the same time, the position of the slide operation piece 4 is forcibly restricted to the ON position shown in FIG. 3 by the urging force of the torsion coil spring 14.

In FIG. 3, reference numeral 11f denotes an aperture switching member 13.
Is a stopper with which the base of the spring hook pin 13d abuts.

At this time, since the slide operation piece 4 is sliding to the right, the main switch piece 22 is turned to the ON position, and the flash unit 20 starts charging.

On the other hand, when the slide operation piece 4 is slid leftward from the state shown in FIG. 3, the aperture switching member 13 rotates clockwise against the urging force of the torsion coil spring 14,
The right end of the slide operation piece 4 substantially at the center is still the unit body 1
The biasing direction is reversed at the rotational position where the front cover 2 and the lateral side of the front cover 2 protrude, and thereafter, the bias is rotated clockwise by the biasing force of the torsion coil spring 14, and as shown in FIG. It switches to the other aperture 13b. At the same time, the position of the slide operation piece 4 is forcibly restricted to the off position shown in FIG. 2 by the urging force of the torsion coil spring 14.

That is, the torsion coil spring 14 and the aperture switching member 13 constitute a slide operation piece position control mechanism for forcibly controlling the position of the slide operation piece 4. In FIG. 2, reference numeral 11g denotes a stopper with which the base of the spring hook pin 13d of the aperture switching member 13 contacts.

At this time, since the slide operation piece 4 has been slid to the off position, the strobe unit 20 stops charging.

As described above, the base of the spring hook pin 13d, that is, the spring hook is brought into contact with the stopper 11g, so that the swing of the aperture switching member 13 is reduced and positioning is performed with high accuracy.

Next, the operation of the lens-fitted film unit having the above-described structure will be described.

According to the film unit with the lens, the angle between the sliding direction of the slide operation piece 4 and the peripheral surface of the slide operation piece 4 of the front cover 2 is made different by the angle θ as shown in FIG. Therefore, when the slide operation piece 4 is operated to the ON position, the amount of exposure of the slide operation piece 4 from the surface of the front cover 2 increases, thereby making it clear to the user especially the ON state of the strobe unit 20. Can be recognized.

Further, since the inner wall of the guide wall of the slide operation piece 4 is engaged with the ribs 1a, 1a provided on the unit body 1, the slide operation piece 4 is slid. It is possible to smoothly slide between the off position and the on position in a stable state, thereby improving operability.

Further, even if a strong force is applied from the front of the slide operation piece 4, the unit body 1 directly receives the force.
The main switch piece 22 is not deformed.

The engaging step 4 of the slide guide piece 4e
f is slidably brought into contact with a guide rib 2c provided inside the front cover 2 near the taking lens hole 2b, and the main condenser C and the front cover 2 located at the lower part of the strobe unit 20 are connected to the slide guide piece 4e. Since it extends into the wedge-shaped gap region 30 to be formed, the slide operation of the slide operation piece 4 can be performed through the slide guide piece 4e while preventing the swing and play of the slide operation piece 4, Thereby, it is possible to secure stable and reliable operability of the slide operation piece 4.

Further, the slide operation piece position control mechanism using the torsion coil spring 14 and the aperture switching member 13 can prevent the slide operation piece 4 from stopping at a halfway position between the ON position and the OFF position. Thus, the operability of the slide operation piece 4 can be improved, and unnecessary waste of operation batteries due to erroneous operation of the slide operation piece 4 can be avoided.

[0056]

According to the first aspect of the present invention, since the slide direction of the slide operation piece is devised, it is possible to provide a film unit with a lens which can clearly recognize the ON state of the strobe device. Can be.

According to the second aspect of the present invention, the slide operation of the slide operation piece can be performed while the guide wall of the slide operation piece is engaged with the guide rail of the unit main body, and the stable and reliable operation of the slide operation piece can be performed. It is possible to provide a film unit with a lens that can ensure the properties.

According to the third aspect of the present invention, there is provided a film unit with a lens capable of performing a slide operation while preventing the slide operation piece from swinging, thereby ensuring stable and reliable operability. Can be.

According to the fourth aspect of the present invention, in addition to the effects of the third aspect of the present invention, there is provided a film unit with a lens which can prevent the slide operation piece from swinging and rattling through a slide guide piece. Can be.

According to the fifth aspect of the present invention, it is possible to provide a film unit with a lens capable of efficiently transmitting the operation force of the slide operation piece to another mechanism.

According to the sixth aspect of the present invention, the operability of the slide operation piece is improved by the slide operation piece restriction spring mechanism, and the lens-equipped film can avoid unnecessary waste of battery due to erroneous operation of the slide operation piece. Units can be provided.

According to the seventh aspect of the present invention, it is possible to provide a lens-equipped film unit that can more reliably avoid wasting battery power due to erroneous operation of the slide operation piece.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a film unit with a lens according to an embodiment of the present invention.

FIG. 2 is a front view of a film unit with a lens without external parts when flash photography is not performed.

FIG. 3 is a film unit with a lens from which exterior parts have been removed when performing flash photography.

FIG. 4 is a cross-sectional view of the film unit with a lens as viewed from below.

FIG. 5 is a longitudinal sectional view of a state where a rear cover of a film unit with a lens is removed.

FIG. 6 is a front view showing an example of a conventional film unit with a lens.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit main body 1a Rib 1c Roll film room 1d Patrone room 1e Exposure part 1f Image frame 2a Slot 2b Photo lens hole 2c Guide rib 4 Slide operation piece 4b Press rib 4e Slide guide piece 4f Engagement step 5 Reel 6 Knob 10 Shutter unit 11 Shutter base plate 11g Stopper 12 Shutter blade 13 Aperture switching member 13d Spring hook pin 13e Engagement pin 14 Torsion coil spring 15 Shooting lens holding frame 16 Lens holder 20 Strobe unit 21 Printed circuit board 22 Main switch piece 30 Gap area F Film L1 Shooting lens L2 Shooting lens P Patrone

Claims (7)

[Claims] An unexposed photographic film is incorporated in a unit body, and a film unit with a lens is provided with a slide operation piece for a strobe device which is slidably mounted so as to be exposed from a front cover attached to a front surface of the unit body. The film unit with a lens according to any one of claims 1 to 3, wherein an angle between the sliding direction of the slide operation piece and a peripheral surface of the slide operation piece of the front cover is different. 2. A lens-equipped film unit having a slide operation piece for a strobe device, wherein an unexposed photographic film is incorporated in the unit main body and the slide operation piece is slidably mounted so as to be exposed from a front cover mounted on a front surface of the unit main body. The film unit with a lens, wherein a guide wall is provided on the slide operation piece along the slide direction, and a guide rail is formed on the unit body to engage with the guide wall along the slide direction of the slide operation piece. . 3. A film unit with a lens having a slide operation piece for a strobe device, wherein an unexposed photographic film is incorporated in the unit main body, and the slide operation piece is slidably mounted so as to be exposed from a front cover mounted on the front surface of the unit main body. In the slide operation piece, a slide guide piece having an engagement step portion extending along an extending direction from an end of the strobe switch side of the strobe device in the slide operation piece extends, and the inside of the front cover near an imaging lens hole is provided. A film unit with a lens, comprising a guide rib with which an engaging step of a slide guide piece slides. 4. A lens-equipped film unit having a slide operation piece for a strobe device, wherein an unexposed photographic film is incorporated in the unit main body, and the slide operation piece is slidably mounted so as to be exposed from a front cover mounted on the front surface of the unit main body. A gap formed by a main condenser located at a lower portion of the strobe device and a front cover, wherein a slide guide piece having an engagement step portion extending in a direction extending from a strobe switch side of the strobe device in the slide operation piece. A film unit with a lens, wherein a guide rib is provided inside the vicinity of a photographic lens hole of the front cover, and a guide rib with which an engagement step portion of the slide guide piece slides is provided. 5. The sliding direction of the slide operation piece is:
The lens-fitted film unit according to any one of claims 1 to 4, wherein the direction is a direction intersecting with an optical axis of a photographing lens provided in the unit main body. 6. A slide operation piece restricting spring mechanism which engages with the slide operation piece and forcibly restricts the slide operation piece to a position where the strobe device is turned on or off is provided on the unit main body. The film unit with a lens according to any one of claims 1 to 5, wherein 7. The slide operation piece is configured such that an end of the slide operation piece protrudes from a side of the unit body when the slide operation piece is at a position where the strobe device is turned on. The one-side regulating spring mechanism is forcibly turned off from a position where the end of the slide operation piece is still protruding from the side of the unit main body while moving the strobe device from the on position to the off position. 7. The film unit with a lens according to claim 6, wherein the slide operation piece is moved.