JPH08211472A - Camera - Google Patents

Abstract

PURPOSE: To make a camera compact and inexpensive by simplifying a mechanism for opening/closing a cartridge light shielding window provided in a film cartridge. CONSTITUTION: This camera is provided with a light shielding window opening/ closing driving force transmitting means 15 which is displaced in accordance with the positional change of a photographic lens barrel by a photographic lens barrel driving motor and transduces the displacement to the opening/closing driving force of the cartridge light shielding window provided on the film cartridge loaded in the camera. The cartridge light shielding window is opened/ closed by using the positional change movement of the photographic lens barrel without providing an exclusive motor and a power dividing mechanism from a film feeding means, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a camera which uses a film cartridge having a cartridge light-shielding window and is provided with a cartridge light-shielding window opening / closing means for opening and closing the cartridge light-shielding window.

[0002]

2. Description of the Related Art Recently, as shown in US Pat. No. 5,357,303 and Japanese Patent Laid-Open No. 3-75637, a film cartridge having a cartridge light-shielding window (cartridge light-shielding lid) at the film entrance / exit has been proposed. FIG. 25 shows an example of this type of film cartridge.

In FIG. 25, 1a is a cartridge shell, 1b is a film entrance / exit, 1c is a cartridge light-shielding window, 1d is a driver engaging portion for opening / closing the cartridge light-shielding window,
Reference numeral 1e is a spool in the cartridge for winding the film, and 1f is a fork gear engaging portion for rotating the spool in the cartridge.

The cartridge light-shielding window 1c moves integrally with the cartridge light-shielding window opening / closing driver engaging portion 1d, and is in a closed position for shielding the film entrance / exit 1b when the film cartridge is not loaded in the camera. When a film cartridge is loaded in the cartridge and the film is to be fed out, the open position is determined by the stop position of the cartridge light-shielding window opening / closing engaging portion 1d.

Therefore, when a film cartridge of this kind is loaded in a camera, the phase of the driver member for driving the cartridge light-shielding window opening / closing on the camera side which is engaged with the driver engaging portion 1d for opening / closing the cartridge light-shielding window is set to the cartridge light-shielding window. The phase of the driver engaging portion 1d for opening / closing the cartridge light-shielding window in the state where 1c is closed is adjusted in advance,
It is necessary to reduce the engagement load. When the film is pushed out from the film cartridge, the cartridge light-shielding window 1c is accurately rotated from the closed position to the open position by a predetermined angle, and when the rewinding of the film to the film cartridge is completed, the cartridge is closed. Blackout window 1
It is also necessary to accurately rotate c back from the open position to the closed position.

In order to drive the driver engaging portion for opening and closing the cartridge light-shielding window as described above, it is driven by using a dedicated motor as shown in Japanese Patent Application No. 5-37306 filed by the present applicant. Or Japanese Patent Application No. 6-2 filed by the applicant of the present application
It is proposed that the movement of the film feeding gear train as shown in No. 44966 is power-divided by the movement of the photographing lens barrel to drive the cartridge light shielding window.

[0007]

However, the camera proposed above has the following problems a) to c).

A) In the camera shown in the embodiment of Japanese Patent Application No. 5-37306, if a dedicated motor for opening / closing the cartridge light-shielding window is used, the size and cost of the camera will be increased.

B) As shown in the embodiment of Japanese Patent Application No. 6-244966, the dedicated motor for opening / closing the cartridge light shielding window is stopped, and the power from the existing film feeding motor is used to open / close the cartridge light shielding window. When it is attempted to drive, a power splitting means for switching the power from the film feeding means to a means for opening / closing the cartridge light shielding window and a position control means for determining the position of the power splitting means (in conjunction with the photographing lens barrel) are required. As a result, the number of parts increases, leading to an increase in the size and cost of the camera.

C) When a film cartridge having a cartridge light-shielding window as disclosed in Japanese Patent Laid-Open No. 3-75637 is used, a conventional light-shielding method is used in which a film is sandwiched by a light-shielding material called a teremp material at the film entrance / exit. Compared to a film cartridge, the damage caused when the cartridge chamber lid is opened while the film is being pulled out is large. This is because there is a risk that even the part that is not pulled out from the film cartridge may be exposed to light.

As a safety measure against the above-mentioned photosensitivity problem, it is desirable to newly provide a cartridge chamber lid locking means that is interlocked with the cartridge light shielding window. That is, when the cartridge chamber lid locking means is provided and the film cartridge is loaded into the camera to close the cartridge chamber lid and the cartridge light-shielding window is opened, the cartridge chamber lid is prevented from being opened by an external force. It is desirable that the cartridge chamber lid is unlocked and the cartridge chamber lid is unlocked to allow its opening only when the cartridge light-shielding window is closed.

However, the above-mentioned Japanese Patent Application No. 6-24496.
In the camera shown in the embodiment of No. 6, when the timing of the cartridge light-shielding window drive section and the cartridge chamber lid locking means is set, the film cartridge loading end surface side (the surface opposite to the film cartridge loading port) Since the cartridge light-shielding window drive engaging portion is provided, the cartridge light-shielding window driving portion and the cartridge chamber lid locking means are located at both ends of the cartridge chamber and are separated from each other, and thus interlocking is difficult, and the two driving portions If a mechanism that secures a drive source for operating the camera is taken, the structure becomes complicated and the size of the camera is increased.

(Object of the Invention) A first object of the present invention is to provide a camera capable of simplifying the mechanism for opening and closing the light-shielding window of the cartridge provided in the film cartridge, and achieving downsizing and cost reduction. Is to provide.

A second object of the present invention is to reduce the size of the light-shielding window opening / closing driving force transmitting means by a single member, and to open / close the cartridge light-shielding window by changing the light-shielding window opening / closing driving force transmitting means. It is an object of the present invention to provide a camera that can improve the transmission balance of the respective driving forces for locking the cartridge chamber lid.

[0015]

In order to achieve the first object, the present invention according to claim 1 is changed in accordance with the position change of the photographing lens barrel by the photographing lens barrel driving motor, and the displacement is caused. Is provided with a light-shielding window opening / closing drive force transmitting means for converting the opening / closing drive force of the cartridge light-shielding window provided in the film cartridge loaded into the camera into the opening / closing of the cartridge light-shielding window from a dedicated motor or film feeding means. Instead of providing a power split mechanism or the like, the movement of the position of the photographing lens barrel is used to perform the movement.

Also in order to achieve the above-mentioned first object,
According to a second aspect of the present invention, the light-shielding window opening / closing driving force transmitting means is disposed at a position sandwiched between the cartridge chamber in which the film cartridge is loaded and the photographing lens barrel, and the light-shielding window opening / closing driving force transmitting means comprises: The transmitted portion that receives the position changing motion of the photographing lens barrel is engaged with the driving force transmitting portion provided in the photographing lens barrel, and the light shielding window opening / closing driving force is directly transmitted according to the position change of the photographing lens barrel. The means is moved (without a power transmission unit interposed between the light-shielding window opening / closing drive force transmission means and the photographing lens barrel), and the cartridge light-shielding window is opened / closed by using this transition as a driving force.

In order to achieve the second object,
The present invention according to claims 5 and 6 includes a cartridge chamber lid locking portion for locking the cartridge chamber lid to the light shielding window opening / closing driving force transmitting means, and more specifically, the light shielding window opening / closing driving force transmitting means. A drive force transmission unit that transmits the opening / closing drive force of the cartridge light-shielding window is provided at one end, and the cartridge chamber lid locking unit is provided at the other end, with the transmitted portion (the portion that receives the position change movement of the imaging lens barrel) being substantially at the center. And the cartridge chamber lid locking portion is moved to the locking position of the cartridge chamber lid (closed state) when the cartridge light shielding window is opened.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below based on the illustrated embodiments.

The main parts of the constituent elements of the camera according to the embodiment of the present invention are the first cartridge chamber lid locking means, the second cartridge chamber lid locking means, the cartridge light shielding window driving means (the cartridge light shielding window opening / closing means). And a light-shielding window opening / closing driving force transmitting means).

FIG. 1 is a view showing the construction of the first cartridge chamber lid locking means and its vicinity. FIG. 1 (A) is an external view thereof, and FIGS. 1 (B) and 1 (C) are. The perspective views are respectively shown.

In FIG. 1 (A), 2 is a camera body, 2
a is a film cartridge insertion opening, 2b is a claw entrance into which a locking release claw 5a described later enters, 2c is a switch groove for restricting movement of an operation knob 6 described later, 2g is a cartridge chamber, 3 is a cartridge chamber cover, 3a. Is an engaging portion with a later-described engaging portion 9 which constitutes a first cartridge chamber lid engaging means provided on the end surface of the cartridge chamber lid, and 4 holds one end surface of the spool in the cartridge by pushing one end surface of the spool. Supporting ridges,
Reference numeral 5a is a locking claw 6b formed at the tip of an elastic portion 6a described later.
The lock releasing claws 5b for releasing the lock of the cartridge chamber cover 3 in conjunction with the opening or closing operation of the cartridge chamber cover 3 are engaging portions of the second cartridge chamber cover locking means described later.

Reference numeral 6 indicates the opening / closing operation of the cartridge light-shielding window provided in the film cartridge at the same time as moving the later-described locking portion 9 which is the first cartridge chamber lid locking means to the locked / unlocked position. It is an operation knob for selecting and forcibly rewinding the film. Reference numeral 12 is an eject rod for ejecting the film cartridge and opening the cartridge chamber cover 3 by pressing the cartridge chamber cover 3b.

In FIG. 1B, 6c is a switch pressing portion for turning on a forcible rewinding switch, which will be described later, provided at the tip of the operation knob, and 8 is a microcomputer for outputting a film rewinding instruction signal when the switch is turned on. To the rewinding switch, 9 is a locking portion that constitutes the first cartridge chamber lid locking means, 10 is a biasing spring that biases the locking portion 9 in the direction of pushing it out from the operating knob 6, and 6d is A spring hooking hook provided on the operation knob 6 and a spring hooking portion 2e integrally provided on the camera body 2. 11 is the operation knob 6 shown in FIG.
Pulling and urging to the CLOSE side shown in FIG.
Is a spring for biasing the cartridge chamber lid to the locking side (because the operation knob 6 includes the first locking portion 9).

In FIG. 1C, 6b is an operating knob 6.
Is a locking claw that is locked by an engaging portion provided in the main body (not shown) when pushed into the OPEN position against the biasing force of the spring 11, and 6a includes the locking claw 6b at the tip. The elastic portion is formed integrally with the operation knob 6. Reference numeral 7 denotes a cartridge chamber lid opening instruction switch, the operation knob 6 is at the OPEN position, and is pressed when the locking claw 6b enters an engaging portion (not shown).

2 to 6 show that the cartridge chamber lid 3 is moved from the closed position to the open position by the movement of the operation knob 6 provided with the first cartridge chamber lid locking means (locking portion 9). It is a figure which shows the process of.

In FIG. 2, the cartridge chamber lid 3 is locked by a locking portion 9 which is a first cartridge chamber lid locking means,
The operation knob 6 has a spring 11 for closing the cartridge chamber cover CLO.
This shows the state of being pulled in on the SE side [see FIG. 1 (A)].

2 to 6, (A) is a perspective view from the front, and (B) is a perspective view from the bottom.
Incidentally, it is shown in a partial cross section.

In FIG. 2, the engaging portion 9 which is the first cartridge chamber lid engaging means is in the projecting position by the biasing spring 10. Further, the locking portion 9 is provided on the operating knob 6, and the operating portion 6 is biased to the CLOSE position, so that the locking portion 9 is the engaging portion 3 a capable of locking the cartridge chamber lid 3. In position. At this time, since the cartridge chamber lid 3 is completely closed, the tip end of the locking release claw 5a penetrates to a position deeper than the elastic part 6a of the operation knob 6 as shown in FIG. 2 (A). There is. In the state of FIG. 2, the forced rewinding switch 8 and the cartridge chamber lid opening instruction switch 7 are open. The eject rod 12 has a cartridge pressing portion 13 at one end, and an urging spring for urging the film cartridge and the cartridge chamber lid 3 at the other end in a direction [downward in FIG. 2 (A)]. 1
4, the cartridge chamber cover 3 is provided in the state of FIG.
Is pushed because it is completely closed. Therefore, the cartridge pressing portion 13 is pushed to a position below the contact surface when the film cartridge is completely loaded, and the biasing spring 14 is charged.

In FIG. 3, the cartridge chamber lid 3 is locked by a locking portion 9 which is a first cartridge chamber lid locking means,
The operation knob 6 opposes the biasing force of the spring 11, and the REWIN
This shows a state in which the switch is operated to the D position [forced rewind position (see FIG. 1A)].

In FIG. 3, the locking portion 9 which is the first cartridge chamber lid locking means moves in accordance with the movement of the operating knob 6, but is still in the projecting position by the biasing spring 10, and the cartridge chamber is locked. The engaging portion 3a with the lid 3 is also in the engaged position. Therefore, the states of the eject rod 12 and the cartridge pressing portion 13 are the same as those in FIG. However, since the operation knob 6 is moved to the RWIND position against the biasing force of the spring 11, the switch pressing portion 6c of the operation knob 6 presses the forced rewind switch 8 to turn it on.

Further, the elastic portion 6a integral with the operation knob 6 moves so as to press the locking claw 6b at the tip against the side surface of the camera body shown by the broken line [see FIG. 3 (B)]. In this state, the operation knob 6 is not locked and the cartridge chamber lid open instruction switch 7 is open.

FIG. 4 shows a state immediately after the cartridge chamber lid 3 reaches the position where the locking by the locking portion 9 which is the first cartridge chamber lid locking means is released, and the operation knob 6 is provided with the spring 11.
In contrast to the urging force of No. 1, the OPEN position [see FIG. 1 (A)] is operated and locked.

In FIG. 4, the locking portion 9 as the first cartridge chamber lid locking means moves further than that in FIG. 3 in accordance with the movement of the operation knob 6, but the protruding position by the biasing spring 10 is still maintained. It is in. However, the cartridge chamber lid 3
As shown in FIG. 4 (A), the position of the engaging part 3a with the engaging notch becomes an engaging notch [see FIG. 1 (A)], and the cartridge chamber lid 3 and the first cartridge chamber lid locking means are physically arranged. Locking part 9
Will be disengaged.

Further, since the operating knob 6 is moved to the OPEN position against the biasing force of the spring 11, the locking claw 6b integral with the operating knob 6 is provided on the camera body as shown in FIG. 4 (B). The elastic portion 6a is pushed into and locked by the provided locking portion 2d. When the locking claw 6b enters the locking portion 2d, the cartridge chamber lid opening instruction switch 7
Press to turn it on. Since the locking claw 6b is located at a position shallower than the locking release claw 5a at the moment of entering the engaging portion 2d,
It is locked without being pushed back again. The forced rewinding switch 8 is pressed by the operation knob 6 and continues to be turned on without changing from the state of FIG.

On the other hand, in the eject mechanism, the locking of the cartridge chamber lid 3 other than the first cartridge chamber lid locking means (locking claw 15a which is the second cartridge chamber lid locking means of FIG. 9 described later) is provided. If it is released, the ejecting rod 12 starts the operation of opening the cartridge chamber lid 3 by utilizing the charged force of the biasing spring 14.

In FIG. 5, the cartridge chamber lid 3 is locked by the locking portion 9 which is the first cartridge chamber lid locking means and the locking which is the second cartridge chamber lid locking means although not shown. Both of the locks by the portion 15a (shown in FIG. 9 to be described later) are shown to be released and start to open. At that time, the lock release claws 5a push out the lock claws 6b, and the operation knob 6 causes the spring 11 to move. The position returned to the CLOSE position [see FIG. 1 (A)] by the urging force of.

In FIG. 5, the unlocked cartridge chamber lid 3 starts to open upon receiving the pressure of the eject rod 12 by the charged biasing spring 14. At this time, the lock release claw 5a that is integral with the cartridge chamber cover 3 is interlocked with the opening of the cartridge chamber cover 3 and the lock claw 6 of the operation knob 6 is interlocked.
abut b. As a result, the locking claw 6b is attached to the main body engaging portion 2
It is ejected from d, and the cartridge chamber lid open instruction switch 7 is simultaneously opened and turned off. The operation knob 6 that has lost the lock is moved from the OPEN position to the R position by the biasing force of the spring 11.
After passing through EWIND, the position is shifted to the CLOSE position [see FIG. 5 (B)], and at the same time, the forced rewind switch 8 is opened and turned off.

Further, the locking portion 9 which is the first cartridge chamber lid locking means is always kept projecting by the biasing spring 10, and the operation knob 6 returns to the CLOSE position as described above, so that the cartridge is again locked. The chamber lid 3 is returned to the lockable state. That is, as is clear from the comparison between FIG. 4A and FIG. 5A, the engagement portion 9 is notched in the engaging portion 3 a of the cartridge chamber lid 3 when the cartridge chamber lid 3 is opened. Since it comes to the position where it does not exist, the cartridge chamber lid 3 can be surely locked again by the first cartridge chamber lid locking means.

Needless to say, even if the first cartridge chamber lid locking means is in the process of returning to the position where the cartridge chamber lid 3 can be locked, as shown in FIG.
As shown in (B), since the cartridge chamber lid 3 has been pushed by the eject mechanism and has already started to be opened, the cartridge chamber lid 3 is re-engaged by this returning operation.
Will not be locked. That is, the tip of the locking portion 9 which is the first cartridge chamber lid locking means is shown in FIG.
As shown in FIG. 3, the inclined portion 9a has an inclined portion 9a, and if the inclined portion 9 is being returned (moving from the open position to the closed position), the engaging portion 3a of the cartridge chamber lid 3 to be opened is formed. This is because even if it comes into contact with the end surface of the protruding portion, it rides up.

FIG. 6 shows that the cartridge chamber lid 3 is completely pushed out to the pressing limit of the eject rod 12.

In FIG. 6, the cartridge pressing portion 13 integrated with the eject rod 12 is a film cartridge,
The urging spring 14 pushes the fork gear engagement portion 18a and the engagement portion 16d of the cartridge light-shielding window opening / closing driver member 16 to a position sufficient to separate them from each other. The ejecting operation of the cartridge pressing portion 13 is stopped by the contact portion provided on the main body (not shown) (pressing limit). If the film cartridge is loaded, the end surface of the film cartridge is pushed out to the extent that it can be picked up by the finger from the film cartridge insertion opening 2a.

On the contrary, when the film cartridge is inserted from the state shown in FIG. 6 in which the cartridge chamber cover 3 is completely opened, only the cartridge pressing portion 13 can be inserted, and the rest is pushed by the finger to push the cartridge chamber cover 3 with an eject stick. 12
Push it to the charge position again to fully load it. When the cartridge chamber lid 3 is completely closed and locked by the locking portion 9 which is the first locking means, locking by the second cartridge chamber lid locking means described later and opening of the cartridge light shielding window, Film winding is performed.

2 to 6, the process of moving the cartridge chamber lid 3 from the closed position to the open position by the movement of the operation knob 6 provided with the first cartridge chamber lid locking means (locking portion 9). I explained.

In the above-described embodiment, the cartridge chamber lid 3 which is within the operable range of the operating knob 6 is opened (OPEN).
And rewind (CLOSE) between the forced rewind area (REWI
ND), for example, only the forced rewinding shown in FIG. 3 is performed and the state returns to the state of FIG. 2 again (in both FIGS. 2 and 3, the first cartridge chamber lid locking means and a second cartridge chamber described later). The cartridge chamber lid locking means is working).

Further, even when the operation knob 6 is fed to the OPEN position where the locking by the first cartridge chamber lid locking means of the cartridge chamber lid 3 is released, regardless of whether the film is rewound or not. By always passing through the forced rewind area, the film can be reliably rewound.

In FIGS. 7 and 8, when the cartridge chamber lid 3 is opened, the operation knob 6 is accidentally moved from the CLOSE position to the OPE position.
FIG. 11 is a diagram showing a movement until the operation knob 6 returns to the CLOSE position when the operation knob 6 has been sent to the N position.

FIG. 7 shows that the operating knob 6 is at the OPEN position even though the cartridge chamber cover 3 is open.
(See (A)).

In FIG. 7, when the operating knob 6 is moved against the urging force of the spring 11 from the state of FIG. 6, the locking claw 6b engages with the main body engaging portion 2d, and the operating knob 6 becomes O.
It is locked in the PEN position. At that time, the forced rewinding switch 8 and the cartridge chamber lid opening instruction switch 7 are both pressed to be in the ON state. However, the microcomputer to be described later is provided with a cartridge chamber lid closing detection switch and a cartridge shown in FIG. Since the sequence control is also performed by using the loading completion detection switch (described in the sequence of FIGS. 20 to 24 described later), erroneous film winding and the opening operation of the cartridge light shielding window are not performed.

FIG. 8 shows the position where the cartridge chamber lid 3 is closed from the state shown in FIG. 7, in which the locking claw 6b is unlocked by the insertion of the locking release claw 5a, and the operation knob 6 is moved from the OPEN position. This shows a state in which the position is offset to the CLOSE position.

In FIG. 8, the cartridge chamber lid 3 which is closed from the state of FIG.
It enters into b and reaches the locking portion 2d. The locking release claw 5a that has entered repels the locking claw 6b, and the operation knob 6 is opened.
The cartridge chamber lid opening instruction switch 7 and the forced rewinding switch 8 are opened by shifting from the EN position to the CLOSE position. Then, when the cartridge chamber lid 3 is further closed, the engaging portion 3a of the cartridge chamber lid 3 contacts the slope of the locking portion 9 and presses the slope to charge the biasing spring 10. Then, when further closed, the engaging portion 9 which is the first cartridge chamber lid engaging means catches the engaging portion 3a of the cartridge chamber lid 3 and is pushed by the biasing spring 10 to engage. As a result, the cartridge chamber lid 3 is locked and becomes the same as the state shown in FIG.

As shown in FIGS. 7 and 8, the operation knob 6 is mistakenly operated when the cartridge chamber lid 3 is opened.
Even when is set to the OPEN position, when the cartridge chamber lid 3 is closed again, the cartridge chamber lid 3 is locked without any problem in the mechanical sequence.

As described above, the operation knob 6 having the first cartridge chamber lid locking means is provided with the locking claw 6b, so that the camera user operates the operation knob 6 from the CLOSE position to the OPEN position. Thus, it becomes possible to continue to latch the locking portion 9 which is the first cartridge chamber lid locking means at the non-locking position of the engaging portion 3a of the cartridge chamber lid 3, and the cartridge chamber lid 3 By the opening / closing operation, the latch of the first cartridge chamber lid locking means at the non-locking position is released, and the cartridge chamber lid 3 can be locked again.

FIG. 9 is a perspective view showing the second cartridge chamber lid locking means and the cartridge light-shielding window driving means.

In FIG. 9, reference numeral 15 is a cartridge light-shielding window operating means, which has a cam follower 15d engaged with the center portion for interlocking with a photographing lens barrel shown in FIG. 10, which will be described later, and a second cartridge chamber lid locking portion at the lower end. A locking portion 15a which is a means, an opening operation portion 15b and a closing operation portion 15c which are cartridge light-shielding window operation portions, and a guide groove 15e which regulates the forward / backward movement are vertically provided at the upper end.

Reference numeral 32 is a guide pin, which fits in the guide groove 15e of the cartridge light-shielding window operating means 15 and has a fall-preventing function. Reference numeral 16 denotes a cartridge light-shielding window opening / closing driving driver member for engaging with the cartridge light-shielding window opening / closing driver engagement portion 1d (see FIG. 25) of the film cartridge to open / close the cartridge light-shielding window, and has a toggle spring 17 at one end. It is provided with a spring engaging portion 16a that is engaged, an open arm 16b that abuts the opening operation portion 15b, a closing arm 16c that abuts the closing operation portion 15c, and a driver portion 16d that engages a film cartridge. There is. Open operation part (15b, 16b), Close operation part (15c,
16c) are engaged with each other at positions having different heights in the vertical direction, and the respective operating parts are never engaged at the same time.

Reference numeral 17 denotes a toggle spring for positioning the driver member 16 for driving the opening / closing of the light-shielding window of the cartridge at two positions, an open end and a closed end. One end is the projection 2f provided on the camera body and the other end is as described above. Is engaged with the spring engaging portion 16a. The driver member 16 for opening / closing the cartridge light-shielding window absorbs the rotational force of the toggle spring 17 by bringing the spring engaging portion 16a into contact with the locking groove 21a provided in the pressing plate 21, thereby performing accurate positioning. ing.

Numeral 18 is a fork gear for rotating the spool in the cartridge by receiving power from the film feeding means described later, and engages with the gear portion 18b and the spool engaging portion 1f in the cartridge (see FIG. 25). It consists of a fork portion 18a. 19, the cartridge chamber lid 3 is completely closed, and the lock release claw 5a is completely engaged portion 2d.
It is a cartridge chamber lid close detection switch that is pressed and turned on when entering (specified in FIG. 4). Reference numeral 20 denotes a loading completion detection switch which is provided at the insertion end of the cartridge chamber and is turned on when the film cartridge is completely loaded. 5b is a second unit integrally provided on the cartridge chamber lid 3.
It is an engaging portion of the engaging portion 15a which is the cartridge chamber lid engaging means.

When the cartridge chamber lid 3 is completely closed, the cartridge light-shielding window operating means 15 receives the power from the photographing lens barrel from the cam follower 15d, and the engaging portion 15a which is the second cartridge chamber lid engaging means moves forward. The cartridge chamber lid 3 is in a locked state.

FIG. 10 is a perspective view showing the photographic lens barrel and the photographic lens barrel driving motor, which are drive sources of the cartridge light-shielding operating means 15.

In FIG. 10, reference numeral 22 is a cam barrel forming a part of the photographing lens barrel, and a lens barrel driving motor 29 described later is provided outside.
To detect the position of the gear 22b that receives power from the outside, the outer cam 22a with which the cam follower 15d (see FIG. 9) for interlocking with the cartridge light-shielding window operating means 15 engages, and the cam barrel 22 of the photographing lens barrel. The flexible substrate part 22c is provided.

A brush switch 30 for position detection is pressed on the flexible board portion 22c, and a signal detected by the brush switch 30 is transmitted to a microcomputer, which is a camera control unit, which will be described later. It is used as one signal for detection. 29 is a lens barrel drive motor,
28 is a pinion worm gear provided in the lens barrel driving motor 29, 25 is a transmission gear, and a worm wheel 25a and a gear portion 25b are integrated.

The gear portion 25b is the gear portion 2 of the cam barrel 22.
It meshes with 2b and transmits the power from the pinion gear 28 to the cam barrel 22.

Reference numeral 26 is a pulse plate which rotates integrally with the transmission gear 25, and 27 is a photo interrupter for detecting the pulse of the pulse plate 26, which enables finer position detection of the photographing lens barrel together with the brush switch 30. Signal is being generated. Reference numeral 23 is a cam barrel 22 retaining ring integrally provided on the front cover of the camera, and 24 is a straight advance barrel having a shutter photographing lens and the like therein.

11A to 11C are perspective views in which a part of the photographing lens barrel shown in FIG. 10 is divided. The same parts as those in FIG. 10 are designated by the same reference numerals, and the description thereof will be omitted. To do.

The cam cylinder 22 has three inner cams 22d, which are female helicoids, having the same shape.
The inner cam 22d is fitted with three cam followers 24a, which are male helicoids, provided on the outer circumference of the rectilinear barrel 24. Reference numeral 31 is a lens barrel support portion that is fitted inside the straight-moving barrel 24 and includes a straight-moving bar 31a that suppresses rotation of the straight-moving barrel 24.

As shown in FIG. 11B, in the photographing lens barrel, the rectilinear barrel 24 is located at a position where the rectilinear barrel 24 does not project from the camera. There is a "shooting position and focus adjustment section" for obtaining the focus position.

In the outer cam 22a, the cam follower 15
If d is in the “second collapsed position” of the initial outer cam 22a, the cam barrel 22 receives power from the lens barrel driving motor 29 and rotates in the direction of arrow a in FIG. Move forward to L "first position of collapse" [Fig. 1
1 (C)]. This L movement section is a section in which the cartridge light-shielding window operating means 15 opens and closes the cartridge light-shielding window to lock or unlock the locking portion 15a which is the second cartridge chamber lid locking means. When the cam barrel 22 is further rotated in the direction of the arrow a from the “first retracted position”, the photographing position and the focus adjustment section, which are the photographing possible regions of the photographing lens barrel, are entered.
In this section after the "first position of collapse", the cam follower 15d does not advance. That is, the cartridge light-shielding window operating means 15 does not move.

As described above, the inner surface of the cam barrel 22 is provided with three inner cams 22d which are female helicoids of the same shape, and the cam followers 24a which are male helicoids are fitted therein. Cam follower 24 provided in the straight-moving barrel 24
If “a” is initially in the “collapsed second position”, the cam barrel 22 rotates in the direction of the arrow “a” to cause the cam follower 24a.
Comes to the "retracted first position". During this time, the follower 24a
Does not move forward. That is, the rectilinear barrel 24 forming a part of the photographing lens barrel does not come out from the inside of the camera body, and the appearance is not noticed by the camera user at all, and the “second collapsed position” and the “collapsed second position” of the photographing lens barrel are not seen. It is possible to make a round trip to and from one position.

When the cam barrel 22 is further rotated in the direction of arrow "a" from the "first retracted position", the cam follower 24a begins to move forward, and signals from the photo interrupter 27 and the brush switch 30 which are the photographing lens barrel position detecting means will be described later. Judging by the microcomputer, stop at the desired shooting position. "Collapse first position"
For the first time in this section thereafter, the rectilinear barrel 24 is extended from the camera body.

FIG. 12 to FIG. 19 show an engaging portion 15a which is a second cartridge chamber lid engaging means, a cartridge light-shielding window operating means 15 and a "retracting second" of a photographing lens barrel which is a power source of the above two means. It is a figure showing the movement at the time of reciprocating motion from a "position" to a "collapse 1st position".

12 to 19, (A) is a perspective view seen from the upper surface of the camera, and (B) is seen from the right side only near the engaging portion 15a which is the second cartridge chamber lid engaging means. It is a perspective view.

FIG. 12 shows a state immediately after the cartridge chamber lid 3 is locked by the locking portion 9 which is the first cartridge chamber cover locking means.

In FIG. 12 (A), "the second position of the collapsible cylinder"
The cartridge light-shielding window operating means 15 is retracted to a position where it does not contact the driver member 16 for opening and closing the cartridge light-shielding lid. The driver member 16 is a toggle spring 1.
It is held at the "cartridge light-shielding window closed position" in which the engaging portion 16a is brought into contact with one end of the restriction groove 21a by the biasing force of 7.

In FIG. 12B, the locking portion 15 which is the second cartridge chamber lid locking means provided at the lower end of the cartridge light-shielding window operating means 15 at the most retracted position.
a is in a position where it is not engaged with the engaging portion 5b. Therefore,
The cartridge chamber lid 3 can be opened as long as the locking portion 9 which is the first cartridge chamber lid locking means described above is released.

In FIG. 13, the cam barrel 22 receives power from the lens barrel driving motor 29 and rotates in the direction of arrow a, and the opening operation portion 15b of the cartridge light-shielding window operating means 15 opens the open arm 16.
It is a figure showing the place which contacted b.

In FIG. 13, when the cam barrel 22 is rotated in the direction "a" from the "first retracted position" to the "second retracted position", the follower 15d interlocking with the photographing lens barrel is attached to the outer cam 22a. When pushed and moved forward, the cartridge light-shielding window operating means 15 integrated with the follower 15d also moves forward in the direction of arrow c. When the opening operation portion 15b comes into contact with the opening arm 16b that operates the driver member 16 for opening and closing the cartridge light-shielding lid that opens and closes the cartridge light-shielding window [FIG.
(A)], as shown in FIG. 13 (B), the engaging portion 15a which is the second cartridge chamber lid engaging means engages with the engaging portion 5b which is integral with the cartridge chamber lid 3, and Even if the locking portion 9 as the cartridge chamber lid locking means is released, it does not open.

In FIG. 14, the cam barrel 22 receives the power from the lens barrel driving motor 29 and continues to rotate in the direction of arrow a, and the opening operation portion 15b of the cartridge light-shielding window operating means 15 presses the driver opening arm 16b. FIG. 6 is a diagram showing that the toggle spring 17 is being charged.

In FIG. 14A, the follower 15d is further pushed by the outer cam 22a by the cam barrel 22 which continues to rotate in the direction of arrow a, and the cartridge light-shielding window operating means 15 advances in the direction of arrow c. The opening operation portion 15b that is in contact with the opening arm 16b continues to press the opening arm 16b against the pressing force of the toggle spring 17. A driver member 16 for driving the opening / closing of the cartridge light-shielding lid, which receives a rotational force that exceeds the biasing force of the toggle spring 17 to the regulation groove 21a.
Starts rotating right from the closed position to the open position of the cartridge light-shielding window, the toggle spring 17 is charged by the engaging portion 16a, and the cartridge spring light shielding window comes to a position where it is not biased to either side of the mechanically neutral restriction groove 21a.

In FIG. 14B, the cartridge light-shielding window operating means 15 which continues to advance further deepens the engagement between the engaging portion 15a and the engaging portion 5b which are the second cartridge chamber lid engaging means.

In FIG. 15, the cam barrel 22 is in the "second collapsed position".
FIG. 9 is a diagram showing a state immediately before reaching the “first collapsed position” by continuing the rotation direction in the direction of arrow a.

The toggle spring 17, which has been charged to the mechanical neutral position, rotates slightly to the right [direction of arrow d in FIG. 14 (A)] due to the cartridge light-shielding window operating means 15 being advanced further than in FIG. The balance is lost, and the driver member 16 for driving the cartridge light-shielding lid opening / closing drive is biased while the toggle spring 17 is opened to the regulation position opposite to that in FIG. The cartridge shading window will now be accurately retained in the open position. Since the driving of the driver member 16 for driving the opening / closing of the cartridge light-shielding lid is finally performed by the force of the toggle spring 17, it is in the “retracted first position”.
Immediately before arrival and at the photographing position after the "first retracted position", the contact between the opening operation portion 15b and the opening arm 16b is released, and the cartridge light-shielding window operation means 15 receives the load of the driver member 16 for opening and closing the cartridge light-shielding lid. It doesn't take anything at all.

Therefore, while the photographing lens barrel is in the "retracted first position" to the "photographing position", the cartridge light-shielding window can be accurately kept open without receiving the load from the outer cam 22a on the photographing lens barrel. Become.

In FIG. 15B, the engaging portion 15a, which is the second cartridge chamber lid engaging means, is engaged with the engaging portion 5b from the position shown in FIG. 14B to the "retracted first position". 15B, the engagement in FIG. 15B is continued to be maintained even at the photographing positions after the “first retracted position”.

As described above, FIGS. 12 to 15 show the “second position of the collapsed state”.
Through the locking by the second cartridge chamber cover locking means, the opening operation of the cartridge light-shielding window and the "first retracted position" are a series of mechanical sequences.

FIG. 16 is a view of the cam barrel 22 in the “retracted first position”, and since the state is the same as that of FIG. 15, the description thereof will be omitted.

In FIG. 17, the cam barrel 22 is in the "retracted first position".
FIG. 11 is a diagram showing immediately after the closing operation portion 15c comes into contact with the closing arm 16c in the process of rotating from the direction to the arrow b direction to reach the “collapsed second position”.

In FIG. 17 (A), the opening actuating portions (15b, 16b), which were in contact with each other in FIG. 14, are not in contact with each other when they are closed. Since the cam barrel 22 starts to rotate in the direction of the arrow b from the “collapsed first position”, the cam follower 15d moves in the backward direction shown by the arrow e in the outer cam 22a.
Is pushed in by. When the cartridge light-shielding window operating means 15 retracts without contact between the cartridge light-shielding window operating means 15 and the driver member 16 for a short period, the closing operation portion 15c and the closing arm 16c eventually come into contact with each other.

As shown in FIG. 17B, at this time, the engaging portion 15a which is the second cartridge chamber lid locking means is still present.
Has not been disengaged from the cartridge chamber lid 3.

In FIG. 18, the cam barrel 22 receives the power from the lens barrel driving motor 29 and continues to rotate in the direction of arrow b, and the closing operation portion 15c of the cartridge light-shielding window operating means 15 presses the closing arm 16c. It is a figure showing the place where the toggle spring 17 is charged.

In FIG. 18A, the follower 15d is further pushed back by the outer cam 22a by the cam barrel 22 which continues to rotate in the direction of arrow b, and the cartridge light-shielding window operating means 15 retracts in the direction of arrow e. The closing operation portion 15c that is in contact with the closing arm 16c continues to push the closing arm 16c in the direction of the arrow f against the pressing force of the toggle spring 17. The driver member 16 for driving the cartridge light-shielding lid opening / closing drive, which receives a rotational force exceeding the biasing of the toggle spring 17 to the regulation groove 21a, starts to rotate the cartridge light-shielding window leftward from the open position to the closed position, and the toggle spring engaging portion 16a causes the toggle spring to engage. 17 is charged to a position where it is not biased to either side of the mechanically neutral restriction groove 21a.

In FIG. 18B, the cartridge light-shielding window operating means 15 which continues to retreat makes the engagement between the engaging portion 15a and the engaging portion 5b, which are the second cartridge chamber lid engaging means, shallower. , Still locked.

In FIG. 19, the cam barrel 22 is in the "retracted first position".
FIG. 11 is a diagram illustrating a state immediately before reaching the “second collapsed position” by continuing the rotation in the direction of the arrow b.

The toggle spring 17, which has been charged to the mechanical neutral position, rotates counterclockwise (in the direction of arrow f in the figure) and loses the balance due to the cartridge light-shielding window operating means 15 being slightly retracted from FIG. The driver member 16 for opening / closing the cartridge light-shielding lid is biased while the toggle spring 17 is opened to the regulation position opposite to that shown in FIG. The cartridge shading window is now correctly held in the closed position. The closing drive of the driver member 16 for driving the opening / closing of the cartridge light-shielding lid is finally performed by the toggle spring 17, so that the closing operation is performed at the "second collapsed position" in which the rotation of the cam barrel 22 is further advanced in the direction of arrow b from FIG. The contact between the portion 15c and the closing arm 16c is released, and the cartridge light-shielding window operating means 15 is prevented from being loaded by the driver member 16 for opening and closing the cartridge light-shielding lid.

In FIG. 19B, at the moment when the toggle spring 17 loses balance and the cartridge light-shielding window is completely closed by its own charging force, the engagement portion 15a which is the second cartridge chamber lid engagement means is still a little. Engagement part 5b
Is engaged with. However, when the cam barrel 22 further rotates in the direction of the arrow b and the cam barrel 22 is completely in the “second collapsed position”, the same relationship as in FIG. The engagement of the lid locking means is released.

As described above, FIGS. 16 to 19 show the "first retracted position".
It is a series of mechanical sequences starting from "1" to "closing second position" of the second cartridge chamber cover locking means through the closing drive of the cartridge light shielding window.

In the mechanism shown in FIGS. 9 to 19, the toggle spring 17 is not necessary. However, toggle spring 17
In the above mechanism, is the cam follower 15d and the outer cam 22.
Even when there is looseness in fitting with a, the opening / closing position of the driver member 16 for opening / closing the cartridge light-shielding window is accurately brought out of alignment by the opening force of the spring itself. If the toggle spring 17 is not provided, the accuracy of the outer cam of the cam barrel 22 and the accuracy of the stop will be severe. If the toggle spring 17 is not provided, the driver member 16 for opening / closing the cartridge light-shielding window can be rotationally driven only by the pressing relationship between the opening operation parts (15b, 16c) and the closing operation parts (15c, 16c). Therefore, the cartridge chamber lid 3 is attached to the locking portion 15
After locking with a, open the cartridge shading window, or
If an attempt is made to release the locking of the locking portion 15a after closing the cartridge light-shielding window, the operating means 15
According to the above-described embodiment, the camera has to be moved back and forth for a long time, and the size of the camera becomes large.

As described above, the first cartridge chamber lid locking means, the second cartridge chamber lid locking means, the cartridge light-shielding window driving means, and the photographing lens barrel described in FIGS. 1 to 19 are incorporated in one camera. And is controlled by a microcomputer described later.

FIG. 20 is an electric block diagram showing the minimum electric circuit configuration required to realize this embodiment.

In FIG. 20, 201 is a control unit for controlling the camera, for example, a microcomputer, 202 is a main power switch for turning ON / OFF the main power supply, and 203 is a cartridge chamber lid close detection switch (the cartridge in FIG. 9). The chamber lid closing detection switch 19), 204 is a forced rewinding switch (corresponding to the forced rewinding switch 8 of FIG. 1), and 205 is a cartridge chamber lid opening instruction switch (FIG. 1).
(Corresponding to the cartridge chamber lid opening instruction switch 7)
Reference numeral 06 denotes a cartridge loading completion switch (corresponding to the cartridge loading completion switch 20 in FIG. 9).

Reference numeral 207a is a photographing lens barrel driving circuit for driving the lens barrel driving motor 207b (corresponding to the lens barrel driving motor 29 in FIG. 10) to drive the photographing lens barrel, and 208 is the photo interrupter 27 or the brush described above. It is a photographing lens barrel position detecting means including a switch 30. Reference numeral 209a denotes a film feeding drive circuit for driving the film feeding motor 209b to wind and rewind the film, and 210 denotes, for example, a photo interrupter for detecting the perforation of the film and a counter for counting the number of film frames according to the perforation number. It is the combined film position detecting means.

FIG. 21 is a flowchart showing a part of the main operation of the camera having the above structure.

In FIG. 21, when the microcomputer 201, which is the control unit of the camera, is loaded with a battery or the like having a voltage and current sufficient to enter the standby state (step 2101), power is supplied from the active power source (step 210).
2) The microcomputer 201 enters the standby state and performs switch acceptance processing (step 2103). If any switch is changed and pressed (step 2
104, YES) to detect which switch has been changed and pressed.

If the forced rewind switch 204 has changed state (step 2105, YES), the forced rewind flow (FIG. 22 described later) is entered (step 210).
8). When the cartridge chamber lid close detection switch 203 changes state (step 2105 → 2106,
YES), the cartridge chamber lid closing flow (FIG. 2 described later)
3) is entered (step 2109). When the state of the main power switch 202 changes (step 2106 →
2107, YES), and the main power switch flow (FIG. 24 described later) is entered (step 2110). Even when the states of a plurality of switches are changed, one of the switches is selected and other switch changes are not accepted while the unique flow is being performed.

If the battery is removed or is no longer considered to be an effective power source due to power reduction (step 2102, NO), the microcomputer 201 stops its operation (step 2111).

FIG. 22 is a flowchart showing the forced rewinding operation when the forced rewinding switch 204 in this embodiment changes its state.

When the forced rewinding flow is entered (see step 2108 in FIG. 21), it is detected whether or not the cartridge chamber lid open detection switch 205 is pressed, and if it is not pressed (ON). (Step 220
6, NO), in order to detect whether or not the film has already been rewound, the film position detecting means 210 and the cartridge loading completion detecting means (corresponding to the cartridge loading completion detecting switches 20 and 206) are used. It is determined whether or not the rewinding is possible (step 220).
1). Already rewound by a film counter, etc.,
Alternatively, when it is determined that the film cartridge is not loaded (step 2201, NO), the forced rewinding operation is canceled and the process exits from this flow.

On the contrary, when the film can be rewound (step 2201, YES), the film feeding motor 209
Rewinding current is applied to b (step 2202), and if the film position detecting means 210 determines that the film has been completely rewound into the film cartridge (step 2202).
203, YES), the power supply to the film feeding motor 209b is finished (step 2204), and the process is exited.

On the other hand, as shown in FIG. 4, the forced rewind switch 204 is pushed and the cartridge chamber lid open switch 2
If 05 is also pressed (YES in step 2200),
Next, it is determined whether the film can be rewound (step 2206), and if it can be rewound (step 2206, YES), the film feeding motor 209b.
When the film is completely rewound (step 2208, YE
S), the rewinding energization to the film feeding motor 209b is stopped (step 2209).

Next, it can be judged that the cartridge light-shielding window is open because the film cartridge is loaded, that is, the photographing lens barrel is considered to be in the "retracted first position" or "photographable position". Therefore, the lens barrel driving motor 207 is moved in the direction in which the photographing lens barrel is moved to the “collapsed second position”.
b is rotated (in the direction of arrow b in FIG. 11, etc.) (step 22
10) "Second collapsed position" in which the second cartridge chamber lid locking means is released and the cartridge light-shielding window closing drive is completed
If it is judged by the photographing lens barrel position detection means 208 (step 2211, YES), the driving of the lens barrel driving motor 207b is stopped (step 2212),
Get out of this flow.

If the film cannot be rewound in step 2206 (step 2206, NO), the cartridge loading completion detection switch 206 for detecting whether or not the film cartridge is loaded is used. Judge (step 220)
5) If the film cartridge is not loaded, the flow directly exits (step 2205, NO).
On the other hand, if the film cartridge is loaded, it can be determined that the film is in the rewound state (step 2205, YES), and the process advances to step 2210.

The above is the forced rewinding operation.

FIG. 23 is a flow chart showing the operation when the state of the cartridge chamber lid close detection switch 203 in this embodiment changes.

When the flow for closing the cartridge chamber lid is entered (see step 2109 in FIG. 21), the cartridge loading completion detection switch 206 first determines whether or not a film cartridge is loaded (step 2).
300). If the film cartridge is loaded (step 2300, YES), the microcomputer 20 which is the control unit determines the position of the photographing lens barrel after the automatic film feeding.
It is judged whether 1 is completely raised (step 23).
01). If the microcomputer 201 is completely started up (step 2301, YES), the cartridge barrel lid 3 is closed and immediately after the cartridge chamber lid close detection switch 203 is pressed, the photographing barrel in the "collapsed second position" is indicated by the arrow. It is rotated in the a direction, the cartridge chamber lid 3 is locked by the second cartridge chamber lid locking means, the cartridge light-shielding window is opened, and the lens barrel drive motor 207b is driven in order to send it out to the photographic possible position ( Step 2303).

During this time, it continues to detect whether or not the forced rewinding switch 204 interlocked with the first cartridge chamber lid locking means of the cartridge chamber lid 3 is pushed (step 23).
04), if the forced rewind switch 204 is pressed before the photographing lens barrel reaches the photographing position (step 2304).
Yes), jump to step 2210 in FIG. 22 and perform the film rewinding operation. When the photographing lens barrel position detecting means 208 detects that the photographing lens barrel has come to the photographing possible position without pressing the forced rewind switch 204 (step 2).
303, YES), the driving of the lens barrel driving motor 207b is stopped (step 2305), and then the film feeding motor 209b is energized in the winding direction (step 2).
306), if it is judged by the film position detecting means 210 that the photographable frame has been sent (step 2307, Y).
ES), and the power supply to the lens barrel drive motor 209b is terminated (step 2308).

On the other hand, when the microcomputer 201 which is the control unit is in the standby state (step 2301, NO),
After YES in step 2301, the stop position of the photographing lens barrel is operated from the “retractable second position” to the “imageable position”, whereas it is operated only to the “retractable first position” (step 2303). Since only the predetermined position in step 2310 changes), the description up to step 2315 will be omitted.

If it is determined in step 2300 that the film cartridge is not loaded (step 2300, NO), the microcomputer 201 is not started (step 2316, NO), the first cartridge chamber cover In order to allow the cartridge chamber lid 3 to be immediately opened again by the locking means, the locking by the second cartridge chamber lid locking means (that is, the operation of moving the photographing lens barrel from the "collapsed second position") is performed. Stop and leave the flow.

On the contrary, if the microcomputer 201 is up (step 2316, YES), it is desired to drive the photographing lens barrel even if the film cartridge is not loaded. Therefore, as in steps 2302 to 2305, step 2 is performed.
Also in step 317 to step 2320, after the photographing lens barrel is manipulated from the “collapsed second position” to the photographing possible position, the flow is exited.

The above is the operation when the cartridge chamber lid 3 is closed.

FIG. 24 is a flow chart showing the operation when the state of the main power switch 202 in this embodiment changes.

When the main power switch flow is entered (see step 2110 in FIG. 21), the microcomputer 2 which is the control unit determines the final stop position of the photographing lens barrel.
It is determined whether 01 has completely risen (step 2400). If the microcomputer 201 has already risen from the standby state, the camera user can
It is considered that 01 is being returned to the standby state. Therefore, first, the presence / absence of loading of the film cartridge is detected by the cartridge loading completion detection switch 206 (step 2401). When the film cartridge is loaded (YES in step 2401), the cartridge chamber lid close detection switch 203 detects that the cartridge chamber lid 3 is closed (step 240).
2, YES), the lens barrel drive motor 207b is driven to move from the "imaging position" to the "retraction first position" (step 2403). When the "first collapsed position" is detected by the photographing lens barrel position detecting means (step 2404),
The energization of the lens barrel drive motor 207b is stopped (step 24
05), the microcomputer 201 is put into a standby state (a power saving state in which switches other than the block diagram shown in FIG. 20, such as a release switch, an AF switch, and a flash, are not accepted) (step 2410), and this flow is exited.

On the other hand, when it is detected in step 2401 that the film cartridge is not loaded (step 2401, NO), it is determined that the cartridge chamber lid 3 is closed.
3 (YES in step 2406), and the lens barrel drive motor 207b is moved from the image-capturing position to the "retracted second position".
The drive to move to is performed (step 2407). This is a driver for opening / closing a cartridge light-shielding window that opens the cartridge chamber lid 3 and waits at a position in phase even if the microcomputer 201 is in the standby state as long as the first cartridge chamber lid locking means is released. This is so that the film cartridge can be engaged with the member 16.

When the "second retracted position" is detected by the photographing lens barrel position detecting means 208 (step 2408, YE).
S), the energization of the lens barrel drive motor 207b is stopped (step 2409), the microcomputer 201 is dropped to the standby state (step 2410), and the flow exits.

Whether or not the cartridge is present (step 2402, NO or step 2406, NO),
When the closing detection of the cartridge chamber lid 3 is not detected, it is considered that the photographing lens barrel is already in the "collapsed second position".
As it is, the microcomputer 201 is dropped to the standby state (step 2410) and the process is exited.

In step 2400, when the microcomputer 201, which is the control unit, is in the standby state, it is considered that the camera user is trying to start up from the standby state. Therefore, after the closing of the cartridge chamber cover 3 is detected by the cartridge chamber cover close detection switch 203 (step 2411, YES), the lens barrel drive motor 20 is detected.
7b is driven to move from the "retracted second position" to the "photographable position" (step 2412). When the "photographable position" is detected by the photographing lens barrel position detection means 208 (step 2413), the lens barrel driving motor 207b is deenergized (step 2414), and the microcomputer 201 can receive all the switches. The flow is raised (step 2415), and this flow is exited.

If it is determined in step 2411 that the cartridge chamber cover 3 is open, the photographing lens barrel must remain in the "second retracted position".
Only start up the microcomputer 201 as it is (Step 2
415), exit from this flow.

The above is the operation when the state of the main power switch changes.

As described with reference to FIGS. 20 to 24, by executing the above control, if the film cartridge is loaded and the film is ejected from the film cartridge, the cartridge chamber lid 3 is carelessly opened. You can prevent it from opening or closing the cartridge shading window to scratch the film.

Further, even when the film cartridge is not loaded, if the cartridge chamber lid 3 is closed, the photographing lens barrel can be operated to the photographing position when the main power switch is turned on so that the operation check can be performed. became.

By providing the above-mentioned first and second cartridge chamber lid locking means, only one operation from the closed position to the open position of the operation knob 6 interlocking with the first cartridge chamber lid locking means is required. , The film is rewound, the cartridge light-shielding window is closed, the second cartridge chamber lid locking means is released, and the film cartridge can be pushed out from the camera until the engagement of the driver member for opening / closing the cartridge light-shielding window is released. became.

As described in this embodiment, the power is transmitted from the photographing lens barrel to the cartridge light-shielding window operating means by the cam mechanism. However, a worm mechanism or a gear mechanism may be used to drive the lens barrel drive motor. There is no problem as long as it is a mechanism capable of transmitting power from. Further, even if the output is not directly obtained from the photographing lens barrel, there is no problem even if a cam mechanism dedicated to the cartridge light-shielding window branched from the lens barrel driving motor is used. Further, although the cartridge light-shielding window operation member can directly drive the cartridge light-shielding window opening / closing driver member,
There is no problem even if some kind of transmission mechanism is interposed.

(Correspondence between Invention and Embodiment) The operation knob 6 in this embodiment corresponds to the cartridge chamber lid opening / closing operation member of the present invention, and the cartridge light-shielding window operation means 15 functions as the light-shielding window opening / closing drive force transmission means of the present invention. Correspondingly, the locking portion 15a corresponds to the cartridge chamber lid locking means of the present invention.

The above is the correspondence relationship between each configuration of the embodiments and each configuration of the present invention, but the present invention is not limited to the configurations of these embodiments, and the functions or embodiments shown in the claims or the embodiments It goes without saying that any structure may be used as long as it can achieve the function of.

(Modification) In this embodiment, the power is transmitted from the photographing lens barrel to the cartridge light-shielding window operating means 15 by the cam mechanism. However, a worm mechanism or a gear mechanism is used, and the lens barrel driving motor 29 is used. There is no problem as long as it is a mechanism capable of transmitting power from. Further, even if the output is not directly obtained from the photographing lens barrel, there is no problem even if a cam mechanism or the like dedicated to the cartridge light shielding window branched from the lens barrel driving motor 29 is used. Further, although the cartridge light-shielding window operating means 15 can directly drive the cartridge light-shielding window opening / closing driver member 16, there is no problem even if some transmission mechanism is interposed.

The present invention has been described as applied to a camera such as a single-lens reflex camera, a lens shutter camera and a video camera, but it can also be applied to other optical devices and other devices, and further as a constituent unit. It is a thing.

Furthermore, the present invention may be constructed by appropriately combining the above embodiments or their techniques.

[0136]

As described above, according to the present invention,
A light-shielding window opening / closing driving force transmission that changes with a change in the position of the photographing lens barrel by the motor for driving the photographing lens barrel, and converts the displacement into the opening / closing driving force of the cartridge light-shielding window provided in the film cartridge loaded in the camera. The cartridge light shielding window is opened and closed by using the position changing motion of the photographing lens barrel without providing a dedicated motor or a power splitting mechanism from the film feeding means.

Further, according to the present invention, the light-shielding window opening / closing driving force transmitting means is arranged at a position sandwiched between the cartridge chamber in which the film cartridge is loaded and the photographing lens barrel, and the light-shielding window opening / closing driving force transmitting means. The structure in which the transmitted portion that receives the position change motion of the photographing lens barrel is engaged with the driving force transmitting portion provided in the photographing lens barrel, and the light-shielding window opening / closing drive is directly performed according to the position change of the photographing lens barrel. The force transmission means is changed (without any power transmission section between the light-shielding window opening / closing drive force transmission means and the photographing lens barrel), and the cartridge light-shielding window is opened / closed by using this change as a driving force.

Therefore, the mechanism for opening and closing the cartridge light-shielding window provided in the film cartridge can be simplified, and downsizing and cost reduction can be achieved.

Further, according to the present invention, the light shielding window opening / closing driving force transmitting means is provided with a cartridge chamber lid locking portion for locking the cartridge chamber lid. A portion (a portion that receives the position change motion of the photographing lens barrel) is substantially centered, and a driving force transmission portion that transmits the opening / closing driving force of the cartridge light-shielding window is provided at one end side, and a cartridge chamber lid locking portion is provided at the other end side. Each of them is provided so that the cartridge chamber lid locking portion is moved to the locking position of the cartridge chamber lid (closed state) when the cartridge light shielding window is opened.

Therefore, the light-shielding window opening / closing driving force transmitting means is constituted by one member to achieve downsizing, and the cartridge light-shielding window is opened / closed and the cartridge chamber lid is locked by the shift of the light-shielding window opening / closing driving force transmitting means. Therefore, it is possible to improve the transmission balance of each driving force.

[Brief description of drawings]

FIG. 1 is a mechanism diagram showing a first cartridge chamber lid locking means of a camera and its vicinity according to an embodiment of the present invention.

FIG. 2 is a diagram showing a state of the first cartridge chamber lid locking means and its vicinity when the operation knob is at the CLOSE position.

[FIG. 3] First position when the operation knob is in the REWIND position
FIG. 3 is a view showing the cartridge chamber lid locking means and its appearance.

FIG. 4 is a diagram showing a state of the first cartridge chamber lid locking means and its vicinity immediately before the operation knob reaches the OPEN position.

[Fig. 5] The cartridge chamber lid is opened and the operation knob is CLO.
FIG. 9 is a diagram showing a state of the first cartridge chamber lid locking means and its vicinity when returned to the SE position.

6 is a view showing a state where the cartridge chamber cover is pushed out to a limit position by an eject rod from the state of FIG.

FIG. 7 is a diagram showing a state where the operating knob is erroneously operated from the CLOSE position to the OPEN position when the cartridge chamber lid is opened.

FIG. 8 is a diagram showing a state when the operation knob is returned to the CLOSE position from the state of FIG. 7.

FIG. 9 is a mechanism diagram showing a second cartridge chamber lid locking means, a cartridge light-shielding window driving means and its vicinity in one embodiment of the present invention.

FIG. 10 is a perspective view showing a photographing lens barrel and a lens barrel drive motor according to an embodiment of the present invention.

11 is an exploded view of the photographing lens barrel of FIG.

FIG. 12 is a view showing a state of second cartridge chamber lid locking means and the like at the second retracted position.

13 is a diagram showing a state of the second cartridge chamber lid locking means and the like at the time of starting the movement from the state of FIG. 12 to the retracted first position.

FIG. 14 is a view showing a state of the second cartridge chamber lid locking means and the like at an intermediate position between the retracted first position and the retracted second position.

FIG. 15 is a view showing a state of the second cartridge chamber lid locking means and the like immediately before reaching the retracted second position from the state of FIG. 14;

FIG. 16 is a view showing a state of second cartridge chamber lid locking means and the like at the retracted first position.

17 is a diagram showing a state of the second cartridge chamber lid locking means and the like at the time of starting the movement from the state of FIG. 16 to the retracted second position.

FIG. 18 is a view showing a state of second cartridge chamber lid locking means and the like at an intermediate position between the retracted first position and the retracted second position.

FIG. 19 is a diagram showing a state of the second cartridge chamber lid locking means and the like immediately before reaching the retracted second position from the state of FIG. 18;

FIG. 20 is a block diagram showing a main configuration of a camera according to an embodiment of the present invention.

21 is a flowchart showing a main operation of the microcomputer shown in FIG.

22 is a flowchart showing the forced rewinding operation of FIG. 21. FIG.

FIG. 23 is a flowchart showing a cartridge chamber lid closing operation of FIG. 21.

FIG. 24 is a flowchart showing an operation associated with a change in the main power switch of FIG. 21.

FIG. 25 is a perspective view showing a general film cartridge having a cartridge light shielding window.

[Explanation of symbols]

2b Claw entrance 3 Cartridge chamber lid 5a Engagement part 6 Operation knob 6b Engagement part of operation knob 7 Cartridge chamber lid open instruction switch 8 Forced rewind switch 9 Engagement part forming first cartridge chamber lid engagement means 12 Eject rod 13 Cartridge pressing portion 14 Energizing spring 15 Cartridge light-shielding window operating means 15a Locking portion forming first cartridge chamber lid locking means 15b Cartridge light-shielding window opening operation portion 15c Cartridge light-shielding window closing operation portion 16 Cartridge light-shielding Window open / close driver member 17 Toggle spring 29 Lens barrel drive motor 201 Microcomputer 203 Cartridge chamber lid close detection switch 204 Forced rewind switch 205 Cartridge chamber lid open switch 206 Cartridge loading completion detection switch

Claims (6)

[Claims] 1. A camera comprising: a photographing lens barrel driving motor for driving a photographing lens barrel; and a cartridge light shielding window opening / closing means for opening / closing a cartridge light shielding window provided in a film cartridge loaded in the camera, wherein: A light-shielding window opening / closing drive force that changes with the position change of the image-taking lens barrel by a motor for driving the image-taking lens barrel, and converts the change into the opening / closing drive force of the cartridge light-shielding window included in the film cartridge loaded in the camera. A camera provided with a transmission means. 2. The light-shielding window opening / closing driving force transmitting means is arranged at a position sandwiched between a cartridge chamber in which a film cartridge is loaded and the photographing lens barrel, and the light-shielding window opening / closing driving force transmitting means transmits the image. 2. The camera according to claim 1, wherein a transmitted portion that receives a position change movement of the lens barrel is engaged with a driving force transmitting portion provided in the photographing lens barrel. 3. The camera according to claim 1, wherein opening / closing of the cartridge light-shielding window via the light-shielding window opening / closing drive force transmitting means is performed during position change movement of the photographing lens barrel in a non-photographing region. . 4. The opening / closing of the cartridge light-shielding window via the light-shielding window opening / closing drive force transmitting means is performed at the time of position change movement of the photographing lens barrel at the end of the photographing area. camera. 5. The light-shielding window opening / closing drive force transmitting means includes a cartridge chamber lid locking portion that locks the cartridge chamber lid in the closed state.
The camera described in 2, 3, or 4. 6. The light-shielding window opening / closing driving force transmitting means has a driving force transmitting portion for transmitting the opening / closing driving force of the cartridge light-shielding window at one end with the transmitted portion substantially at the center, and the other end side. 6. The camera according to claim 5, wherein the cartridge chamber lid locking portion is provided in the.