JPH0566568B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a camera using a cartridge film, and particularly to its aerial photographing mechanism.

"Prior art and its problems" Cameras using cartridge film, known as the 126 or 110 (One-Ten), are traditionally fool-proof cameras that automatically cue up to the first frame when the cartridge is inserted. There were a lot of things, and the aerial photography function without a cartridge inserted was neglected. In a manual winding camera, if the shutter is charged once by winding one frame, it is theoretically possible to have an aerial shooting function, but when a cartridge is installed, Since the cueing mechanism must be activated, a switching mechanism is required depending on whether or not a cartridge is present, and the structure becomes unavoidably complicated. Furthermore, a camera with a built-in motor for winding and shutter charging requires a switch mechanism depending on whether or not a cartridge is included, which complicates the structure and increases cost.

``Object of the Invention'' An object of the present invention is to enable aerial photography with a simple configuration when no film cartridge is inserted.

``Summary of the Invention'' The present invention includes a film detection lever that advances to a position where the film is inserted into the perforation in conjunction with the charging operation of the camera, and rotates as the film is wound, and a film cartridge. A cartridge camera comprising a cartridge ejecting lever that is pressed by the cartridge when inserted into the camera and rotates in one direction, and in its free state rotates by spring force in the other direction to eject the film cartridge, A locking lever that rotates in conjunction with the film detection lever, and a camera charge that stops the rotation of the film winding shaft and enables shutter release when the locking lever rotates in the film winding direction. When the stop mechanism and the film cartridge are not inserted, the locking lever is rotated in the winding direction by the cartridge ejection lever that rotates in the other direction, and the camera charge stop mechanism is brought into a state in which the shutter can be released. It is characterized by being equipped with an interlocking mechanism. When the locking lever rotates in the film winding direction, the camera charge stop mechanism is activated and the shutter release is enabled, allowing aerial photography.

"Embodiments of the Invention" The present invention will be described below with reference to illustrated embodiments. For convenience of illustration and explanation, FIGS. 1 and 2 show the device of the present invention divided into two parts, in which 10 is a cartridge ejection lever, 11 is a locking lever, and 12 is a locking lever.
is the film detection lever. The cartridge ejection lever 10 is rotatable around a pivot hole 10a, and its ejection arm 10b is attached to the film cartridge ejection lever 10.
comes into contact with the upper small diameter cylindrical part CC. This cylindrical part CC
protects the spool gear that meshes with the gear on the camera's winding shaft. A spring hanging portion 10d and an interlocking arm 10e of the interlocking arm 11a of the locking lever 11 are formed on both sides of the pivot hole 10a.
A tension spring 10c applied to the spring arm 10d biases the ejection arm 10b in the direction in which the film cartridge C is ejected from the camera.

The locking lever 11 is rotatable around a pivot hole 11b, has a locking portion 11c at the end opposite to the interlocking arm 11a, and has a locking release pin 11d implanted therein. . The locking lever 11 is biased to rotate in a direction in which the interlocking arm 11a comes into contact with the interlocking arm 10e by a tension spring 11f applied to the spring arm 11e.

The film detection lever 12 has a tip end that is inserted into and removed from the perforation of the film.
2a, and an elongated hole 12b into which a fixed shaft 13 fixed to the camera body is fitted is formed on the opposite side of the detection part 12a. The film loaded in the film cartridge C has one perforation per frame.
is the film detection lever 12 according to the long hole 12b.
When it moves to the film side, it can fit into this perforation, and when it moves to the opposite side, it can come out of the perforation. 14
The film detection lever 12 is connected to the detection section 12a.
This is a tension spring that rotates in a direction in which the film is fitted into the perforation and in a direction opposite to the film movement direction A. The film detection lever 12 has
An interlocking bent portion 12c extending vertically upward is formed, and a U-shaped interlocking groove 12d into which the unlocking pin 11d is fitted is formed at the upper end of this interlocking bent portion 12c.
is formed.

This interlocking bent portion 12c engages with the locking arm 15a of the locking drive lever 15, as is clear from FIG. The locking drive lever 15 is rotatable around a pivot hole 15b, and is rotated by a tension spring 16 so that the locking arm 15a moves the film detection lever 12 back to a position in which it is not engaged with the perforation. It is dynamically energized. This locking drive lever 15 has
The locking lever 11 is located just below the locking arm 15a.
A locked portion 15c that engages with the locking portion 11c is provided.

This locking drive lever 15 is the reset lever 1
7 against the force of the tension spring 16. The reset lever 17 is rotatable around a pivot hole 17a and has a substantially V-shape, and one arm 17b is attached to an interlocking arm 15d of the lock drive lever 15.
A reset pin 17c that engages with is implanted. Further, the other arm 17d has a bent portion 17 that interlocks with the spring hook pin 18a of the shutter blade 18.
e is formed.

The shutter blade 18 has a spring hanging pin 18a.
It is pulled in the direction of arrow B by a tension spring 18b stretched between the camera body and the camera body. This direction B is the opposite direction to the shutter charging direction, and when the shutter is released, the force of this tension spring 18b causes the shutter blade 18 to travel and operate the shutter. When the shutter operates, the spring hook pin 18a pushes the bent portion 17e to rotate the reset lever 17 clockwise in FIG. Move the locking arm 15
a and the interlocking bending portion 12c are disengaged.

A driving pin 15e is implanted in the locking drive lever 15 and fits into a U-shaped interlocking groove 19b formed in one arm 19a of the mechanism stop lever 19. The mechanism stop lever 19 has a pivot hole 19c.
The tip of the other arm 19d is connected to the mechanical stop pin 20a of the stop gear 20.
A stopper portion 19e is formed to engage with the stopper portion 19e.

The hoisting stop lever 21 has a pivot hole 21a.
It is pivotally mounted coaxially with the mechanism stop lever 19. This winding stop lever 21 has a bent portion 21b that interlocks with the arm 19d of the mechanism stop lever 19, and a claw portion 21c that engages with the ratchet wheel 22. The ratchet wheel 22 rotates in conjunction with a motor drive system (not shown), and has a clutch mechanism configured inside the wheel, so that when the claw portion 21c is not engaged, the rotational force is transmitted to the film take-up shaft. , when the claw portion 21c is engaged, no rotational force is transmitted to the film take-up shaft. The stop gear 20 similarly rotates in conjunction with the motor drive system.
When this rotates once, charging of the shutter and film winding is completed. The mechanism stop lever 19 and the hoisting stop lever 21 are connected to the pivot hole 19.
c and the torsion spring 24 wound around the pivot hole 21a, the side surface of the arm 19d and the interlocking bending portion 2
1b is rotatably biased so as to be in constant contact.
24a and 24b are both legs of the torsion spring 24, which are hung on the arm 19d and the interlocking bending portion 21b.

This device having the above configuration operates as follows. 1st
FIG. 2 shows an intermediate state in which the film cartridge C is loaded and is being set again after the shutter is operated. The film cartridge C contacts the ejection arm 10b of the cartridge ejection lever 10 and rotates it against the force of the tension spring 10c.
The locking lever 11, which rotates clockwise in the figure by the force of 1f, locks the locking portion 11c of the locking lever 11 with the locking drive lever 1.
It is advanced to a position where it can engage with the locked portion 15c of No. 5.

Considering the state in which the shutter release has now been completed, the shutter blade 18 is
The spring-loaded pin 1 moves in the direction of arrow B due to the force of
8a is pushing the bent portion 17e of the reset lever 17 as shown in FIG. Then reset pin 17
The locking drive lever 1 is activated by the interlocking relationship between the linkage arm 15d and
5 rotates in the same direction, and its locking arm 15a
As shown by the chain line in the figure, the interlocking bending portion 12c of the film detection lever 12 is stopped at a slightly overrun position. Therefore, the film detection lever 12
can advance in the direction of the film F by the force of the tension spring 14, but when the perforation P of the detection part 12a and the film F do not match, the film F prevents the film F from advancing.

Further, when the lock drive lever 15 is rotated to the state shown in FIG. 4, the mechanism stop lever 19 is rotated counterclockwise in FIG. 2 due to the coupling relationship between the drive pin 15e and the interlocking groove 19b. The stopper portion 19e has escaped from being engaged with the mechanical stop pin 20a of the stop gear 20. Since the rotation of the mechanism stop lever 19 is transmitted to the hoisting stop lever 21 via the interlocking bending portion 21b, the rotation of the mechanism stop lever 19 is
is separated from the ratchet wheel 22, so that the ratchet wheel 22 is in a state where rotation can be transmitted to the film take-up shaft.

The shutter blade 18 turns on a motor starting switch (not shown) just before the end of travel, that is, just before the shutter release is completed, and as a result, charging of the camera starts at the same time as the shutter release is completed.

When the motor is driven, the shutter blade 18 is moved by the charge member driven by the motor.
is being pulled in the direction opposite to the direction of arrow B. Then, the spring hook pin 18a escapes from the bent portion 17e, so the reset lever 17 becomes free, and the lock drive lever 15 is pulled by the tension spring 16 and rotates counterclockwise. However, at this time, the locking portion 11c of the locking lever 11 is
Since it is in a position where it can engage with the locked part 15c shown in the figure, the rotational position of the locking drive lever 15 is the position where the locked part 15c comes into contact with the locked part 11c (see the chain line in FIG. 4). regulated by. Therefore, the stopper portion 19e of the mechanism stop lever 19 maintains a state in which it escapes from the mechanism stop pin 20a of the stop gear 20, and the claw portion 21 of the hoisting stop lever 21
c is maintained apart from the ratchet wheel 22, the camera charge stop mechanism does not work, and the film winding force from the motor is applied to the ratchet foil 2.
2 to the film winding shaft, and the film is wound.

When the film is wound, the detection part 12a of the film detection lever 12 is caught on the perforation P of the film F, and the film detection lever 12
rotates around a fixed shaft 13. In the process of this rotation, the interlocking groove 12d of the film detection lever 12
The locking release pin 11d is pulled, so that the locking lever 11 moves to the first position against the force of the tension spring 11f.
It rotates counterclockwise as shown in Figures 4 and 4. Then, the locking portion 11c and the locked portion 15c are disengaged, and the locking drive lever 15 is rotated counterclockwise by the force of the tension spring 16. Therefore, due to the engagement relationship between the drive pin 15e and the interlocking groove 19b, the mechanism stop lever 19 rotates clockwise, and at the same time, the locking arm 15a pushes the interlocking bending portion 12c to close the film detection lever 1.
2 and remove the detection part 12a from the perforation. FIG. 5 shows this state.

When the mechanism stop lever 19 rotates clockwise, the stopper portion 19e advances to a position where it can engage with the mechanism stop pin 20a of the stop gear 20. Further, the winding stop lever 21 is similarly rotated clockwise by being pulled by the torsion spring 24, and its claw portion 21c is brought into contact with the ratchet wheel 22. Therefore, the rotation of the film winding shaft is stopped.

All shutter charging and film winding operations are completed by one rotation of the stop gear 20, and when the mechanical stop pin 20a of the stop gear 20 comes into contact with the stopper portion 19e, the motor is stopped by a mechanism (not shown). That is, the camera charge stop mechanism operates in conjunction with the rotational movement of the film detection lever 12 in conjunction with the winding of the film.

What is important in the above mechanism is that when the lock drive lever 15 is rotated to the state shown in FIG. 5, charging of the camera is completed and the shutter can be released.

On the other hand, when the film cartridge C is not loaded in the camera, the ejection arm 10b is not pushed by the film cartridge C, so the cartridge ejection lever 10 is moved by the tension spring 1.
It is in a position rotated clockwise by 0c. That is, since the tension spring 11f is set to be weaker than the force of the tension spring 10c, the lock lever 11 is rotated counterclockwise by the force of the tension spring 10c. has moved to a non-engaging position with the locked portion 15c. In this state, when the film cartridge C is loaded, the film detection lever 12 rotates counterclockwise around the fixed shaft 13 as the film advances, and as a result, the locking lever 11 rotates in the same direction. It is equivalent to the rotated state, that is, the state shown in FIG. Therefore, empty photography can be performed without the film cartridge C being loaded.

This aerial photography function will be explained in more detail. After the shutter release is operated, when the spring hook pin 18a pushes the bent portion 17e of the reset lever 17 just before the shutter blade 18 finishes traveling, the reset lever 17 rotates clockwise.
The rotation of 7 is transmitted to the lock drive lever 15, so that the mechanism stop lever 19 and the hoisting stop lever 21 rotate counterclockwise, and the stop gear 2
0 mechanism stop pin 20a and stopper part 19e
and the claw portion 21c and the ratchet foil 2.
2 is disengaged. The operations after the release operation up to this point are independent of whether or not the film cartridge C is loaded in the camera.

Just before the shutter blade 18 finishes running, the motor start switch is turned on and the motor is driven, and the shutter blade 18 is pulled in the direction opposite to arrow B against the force of the tension spring 18b. As a result, the reset lever 17 becomes free, and the lock drive lever 15 rotates counterclockwise by the force of the tension spring 16. This rotation of the lock drive lever 15 indicates that the film cartridge C is loaded. Different from the state. That is, when the film cartridge C is loaded, the rotation of the locking drive lever 15 is restricted by the locking portion 11c, but when the film cartridge C is not loaded, the rotation of the locking drive lever 15 is restricted as described above. Since the lever 11 is rotated to the non-engaging position with the locking drive lever 15, the locking drive lever 15 rotates counterclockwise simultaneously with the shutter winding, and the mechanism stop lever 19 and the winding stop lever 21 Rotate clockwise. Therefore, the stopper portion 19e advances to a position where it can engage with the mechanical stop pin 20a of the stop gear 20, and the claw portion 21
c engages with the ratchet wheel 22 to stop the rotation of the film take-up shaft. Thereafter, when the stop gear 20 rotates once and the mechanism stop pin 20a is locked with the stopper portion 19e, the shutter charge is completed and the shutter becomes ready for release. In other words, you can take aerial photographs.

In the above embodiments, the shutter and camera charge for winding the film are performed by a motor, but the driving force for the charge is not limited. The present invention can be similarly applied to a cartridge camera equipped with a manual charging mechanism or a spring-based charging mechanism.

[Effects of the Invention] As described above, according to the present invention, with a simple configuration, it is possible to easily perform aerial photography without inserting a film cartridge into the camera. Moreover, the cartridge ejection lever and the film detection lever are normally provided in cameras that load a film cartridge, and therefore, according to the present invention that utilizes these existing levers, a special mechanism is not required. It is possible to realize an aerial photographing function without causing a cost increase.

[Brief explanation of drawings]

1 and 2 are perspective views of essential parts showing an embodiment of the cartridge camera of the present invention, FIG. 3 is a plan view showing the relationship between the film detection lever and the locking drive lever, and FIGS. 4 and 5 The figures are plan views in different states showing the relationship between the locking lever and the locking drive lever. C... Film cartridge, F... Film, P... Perflation, 10... Cartridge ejection lever, 11... Locking lever, 12...
...Film detection lever, 13...Fixed shaft, 15...
...Locking drive lever, 17...Reset lever, 1
8... Shutter blade, 19... Mechanism stop lever, 20... Stop gear, 21... Hoisting stop lever, 22... Ratchet wheel.

Claims (1)

[Claims] 1. A film detection lever that advances to a position where the film is inserted into the perforation in conjunction with the charging operation of the camera and rotates as the film is wound; A cartridge camera equipped with a cartridge ejecting lever that rotates in one direction when pressed by the film cartridge when inserted, and in its free state rotates by spring force in the other direction to eject the film cartridge, A locking lever that rotates in conjunction with the detection lever; and a camera charge stop mechanism that stops the rotation of the film take-up shaft and enables shutter release when the locking lever rotates in the film winding direction. and; When the film cartridge is not inserted, the locking lever is rotated in the winding direction by the cartridge ejection lever that rotates in the other direction, and the camera charge stop mechanism is brought into a state in which the shutter can be released. An aerial photographing mechanism for a cartridge camera, characterized by comprising a mechanism;