JPS60118831A - Camera provided with oscillating rewind shaft holder - Google Patents

Abstract

PURPOSE:To prevent a film from being damaged due to the take-up operation while a cartridge is not being supported, by preventing a shutter release operation, when a rear cover is closed and a rewind shaft holder is not at a set position. CONSTITUTION:A rewind shaft 112 engaged to a shaft of a cartridge PT is supported by a holder 115, and the holder 115 is rocked to the set position where the shaft 112 is engaged to the cartridge shaft, and a save position where its engagement is detached. An opened or closed state of a camera rear cover and the position of the holder 115 are detected by means 33-35. A release obstructing means 31 obstructs a shutter release operation, when it is detected that the rear cover of the camera is closed, and the holder 115 is not at a set position.

Description

TECHNICAL FIELD The present invention relates to a camera in which a rewind shaft holder supporting a rewind shaft that engages with a cartridge shaft of a film cartridge is swingably supported.

The camera of the above format is Publication No. 56-50508@i
This is known for this reason, and since the cartridge shaft and the rewind shaft can be disengaged from each other by swinging the rewind shaft holder, there is an advantage that the film roll can be easily taken in and out. However, after loading a new film cartridge into the camera, when closing the camera back cover and winding the film, if you forget to return the rewind shaft holder to the original position where the rewind shaft engages with the cartridge shaft, the Because the shaft is not supported, the winding operation is unstable and the film may be damaged.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a camera of the above type that can prevent damage to the film due to unstable winding operation due to the unsupported cartridge shaft.

Summary The camera of the present invention includes a detection means for detecting the open/closed state of the back cover and the position of the rewind shaft holder, and a detection means for detecting the opening/closing state of the back cover and the position of the rewind shaft holder, and the detection means enables the rewind shaft holder to be at the set position even when the front cover is closed. When it is detected that the shutter is not open, the winding operation or the shirt taller release operation is stopped at 13 times. When stopping the shirt release operation, the winding operation is also indirectly stopped.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings. First, as shown in Figures 1 to 9 (4) When the back cover is closed and the rewind shaft halter has not been returned to the set position, the shirt release operation is disabled, and the winding operation is thereby activated. 1 ((An example of stopping at 1 is shown.

Figure 1 shows the camera tcl viewed from the rear with the back cover opened.In the camera tq, the patrone chamber (pc) is formed to the right of the exposure aperture (AP) in the figure. The rewind shaft (112) is supported on a rewind shaft holder (115) rotatably supported on the bottom wall of the camera, and is located at a position protruding into the cartridge chamber (PC) and at a position where it protrudes into the cartridge chamber (PC). 1. The spool (10) can be moved to a position where it is evacuated from the patrone chamber as shown in Figure 1.
) is located on the left side in the figure, and a through claw (10a) that engages with the perforation of the film is formed on its outer periphery. The sprocket throat (12) has an exposure aperture (A
It is located below the 1st floor. On the inner wall surface of the back cover (Bl-), a lever (FL) which is biased toward the side of the film pressure plate (FP) in the needle direction by a spring (not shown) and stops at the position shown in FIG. When the back cover (BL) is closed, 1. Push the film so that the N6-Flation hangs on the claw (1, Oa) of the spool and brings it into elastic contact with the outer wall of the spool (10).

FIG. 2 is an exploded perspective view showing the internal mechanism and structure of the camera as viewed from the nIJ direction.

In FIG. 2, a drive motor t1. built in the spool (10). A motor gear (2) is attached to the output shaft (1a) of l.
Or it is fixed. Motor gear (2) is gear (3a)
, (3b).

(4a), (4b), (5a), (5b)
Gear (6a) R: Connected through. The gear (7) is rotated by an axis E on the gear holder (123) shown in FIG. 7, which is supported to rotate around the axis of the gear (6).
Supported by T-Noh, film winding 2 o'clock gear (6b)
and the gear (8) fixed to the spool (1o), and transmit the output direction of the motor (1) to the spool (1o). When rewinding the film, this gear (7) moves downward with the rotation of the gear boulder (123) to the lower part of the gear [9] that has moved to the upper position, and disconnects from the gear (8). The gear (9) is mounted on a rotating shaft (101) on which keys (1o, 1a) and keys (101b) are formed.
), and is supported so as to slide in the axial direction (vertical direction in the figure), and as shown in FIG. 7)
As will be described later, it slides between the lower positions where it separates from the camera back in conjunction with the presence or absence of the film cartridge and the opening and closing of the back cover.

A gear (IOIC) fixed to the shaft (iol) meshes with a gear (25a) on a lever (24) rotatably supported by the shaft (1ol). A notch (25b) at the tip of the shaft (25) that rotates integrally with the gear (25a) is connected to the gear (27b) fixed to the film counter (27) when the lever (24) rotates to a predetermined position. ), the rotation of the gear (9) is transmitted to the counter (27), and the counter is rotated by one scale.

The gear (11) meshes with the gear (9) regardless of whether the gear (9) is in the upper or lower position, and the gear (11) meshes with the gear (9) in both the upper and lower positions.
13). A gear (12b) integrated with the sprocket (12a) meshes with the gear (11), and transmits the rotation of the sprocket (12a) driven by the film to the gear (13) via the gear (11). On the other hand, when the gear (9) is in the downward position, the rotation of the motor (1) is as follows: gear (6a), +71, +9+ and (
11) to the gear (13).

In FIG. 3, times and p indicate the operating states of the engagement and disengagement mechanism that connects and disengages the gear (9) and gear (7) depending on the opening and closing of the camera back and the presence or absence of the film cartridge.

The switching lever (21) has an arm part (21a) that engages in the circumferential groove (9a) of the gear (9), and an arm part (21b), and is rotated counterclockwise by a spring (not shown). When the gear (9) rotates clockwise in the figure against the bias, the gear (9) slides to the upper position. The cartridge detection lever (18) is connected to an opening (1) formed in the wall of the cartridge chamber (1)C.
04) into the cartridge chamber (18a)
It is biased clockwise by a spring (18C) in the figure, and when the cartridge chamber (PC) is not loaded with a cartridge, it is stopped at the position shown in FIG. 3, 4.

The sliding plate (19) is supported to slide in the direction of the arrow (l) in the figure, and has a long hole (19a) formed at the right end.
It is engaged with a pin (18b) implanted in the detection lever (18). Therefore, the sliding plate (19) slides in the direction of arrow (i) as the detection lever (18) rotates.The plate spring (20) is fixed to the sliding plate (19). When the sliding plate (19) moves to the right as shown, the left end of the arm (21,
b) When the sliding plate (19) slides to the left in the figure, the arm (21b) of the switching lever (21)
move to the installation position where it engages. The protrusion (22) attached to the camera back (BL)
) pushes the plate (20) forward against its elasticity when the camera back is closed, and pushes the plate (20) forward when the camera back is opened.
0).

When the film cartridge is not loaded in the cartridge chamber, the detection part (18a) enters the cartridge chamber as shown in FIG. The plate (19) has moved to the right position. Therefore, the left end portion of the plate spring (20) is in a position where it does not engage with the arm portion (21b) of the switching lever (21). When the back cover is closed in this state, the plate spring (20) is elastically deformed forward by the protrusion (22), but the switching lever (21) does not rotate and the gear (9) is in the downward position. Retained. As a result, gear (9) and gear (7) are in mesh with each other.

When a film cartridge (PT) is loaded into the cartridge chamber (PC), the detection lever (18
) rotates counterclockwise against the force. As a result, the sliding plate (19) slides to the left in the figure, so the plate (
20) is the arm part (21b) of the switching lever (21).
move to the position where it engages. When the back cover is closed in this state, the protrusion (22) pushes the plate spring (2o) forward,
The left end of the plate spring (2o) is the arm of the switching lever (21) (
21b) forward, the switching lever (21) rotates clockwise. As a result, gear (9) is moved to the upper position and disengaged from gear (7). That is, the gear (
9) C. Film cartridge (
1) It is disconnected from the gear (7) only when 'l') is loaded and the back cover (BL) is closed, and is meshed with the gear (7) at other times.

In Fig. 2, the claw part #A (14) and the cam part E' (1
5) constitutes a one-way clutch, and the pawl member (14
) is transmitted to the cam member (15) only in the clockwise direction in the figure. The pawl member (14) is coupled to the gear (13) so as to rotate integrally therewith, and the cam member (15) is coupled to the cam gear (16) so as to rotate integrally therewith. - The wound cam gear (16) has a gear portion (16a) and a toothless portion (16b). The shutter charge plate (17) is equipped with a rack (17a) having a toothless portion (17b) and a charge protrusion (17d) that engages with a charge lever (99) of the shutter device, and is provided with a spring (17C) to the right in the figure. is energized by The cam gear (16) is the motor (1)
When the charge plate (17
) meshes with the gear part (X6a) or the rack (17a), so it slides to the left in the figure against the above bias and engages with the charge lever (99) by the charge protrusion (17d). Charge the shutter device to the left. Charge plate (
17), the cam gear (16) further rotates and the toothless part (1
6b) comes to face the rack (17a) and when the gear part (16a) and the rack (17a) are separated, a splash (
17C) returns to the right in the figure.

Below is the outer circumference of the margin cam part H (1s) and the switch lever (30)
constitutes a -1A+ feed detection mechanism.

The switch lever (30) has a pin (3oa) (3Uf
), a detection part (30b) that engages with the notch (15a) of the cam member (15), and a switch holder part (30C) that supports the sliding contact piece (32), and has a spring (30d). ), the detection portion (30b) is urged to come into elastic contact with the outer peripheral wall of the cam member (15).

The switch lever (30) is connected to the detection section (
30b) is at the motor stop position engaged with the notch (J5a) of the cam member (15), and the detection part (30b) is at the motor stop position where the cam member (15) is engaged.
The winding upper part that has come into contact with the outer circumferential surface of 5) or has moved near it is rotatably supported from the winding position to the unwinding position, which is further rotated counterclockwise in the figure, as will be described later. As shown, depending on the movement position of this switch lever (30),
The motor drive circuit switches to winding, rewinding and stopping states.

The release locking plate (31) has a projection (31) that engages with a pin (3Oa) planted on the lower surface of the switch lever (30).
a) and a protrusion (
31b), is supported so as to slide in the left-right direction in the figure, and is biased to the left in the figure by a spring (31C), and slides following the rotation of the switch lever (30). move.

When the switch lever (30) is in the winding position and the unwinding position, the locking plate (31) is slid to the right in the figure against the spring (31C) and is held by the protrusion (31b). IJ-
The shutter plate (100) moves downward to prevent a shutter device (not shown) from being released. On the other hand, when the switch lever (30) is at the motor stop position and the release plate (100)
) is pressed down, the locking plate (31) engages the protrusion (31
Since the right end surface of b) engages with the release lever (100), the sliding force to the right is stopped, and as a result, the protrusion (31a) moves the switch lever (1:1) through the pin (3Oa). 30) is prevented from moving from the motor stop position to the hoisting position. That is, at this time, the release plate (1
00) does not return upward, the hoisting operation will not be performed.

The interlocking plate (29) is connected to the charge lever (9) of the shutter device.
9), a projection (29b) that comes into contact with the pin (30a) of the switch lever (30) from the left in the figure, and a locking plate (28). Section (28b)
It has a protrusion (29C) that engages with, and is supported so as to slide in the left-right direction in the figure. When the shutter device is charged, the charge lever (99) stops at the charge position shown in Figure 2, and when the shutter device is activated, it moves to the right from the charge position and moves the protrusion (29a) to the right in the figure. move towards. Therefore, the pin (
3Oa) is pushed to the right, and the switch lever (30) rotates from the motor stop position to the lowering position (release plate (
100) is returning upward, the input 4 figure shows motor i.
The l+ drive circuit is shown. Switch lever (3o)
The contact pieces (32) fixed to are configured to be connected to the switching contacts (Sc), respectively. Contact piece (32)
When the contact (Sa) is connected to the contact point (Sa), both pole terminals of the motor (1) are short-circuited and the rotation of the motor (1) is stopped. The motor (1) has a switching transistor ('I's)
are connected in series, and when the contact piece (32) is connected to a contact (s'b) or (Sc) other than the contact (Sa), and the transistor (Ts) becomes conductive, the motor (1
) rotates.

One input terminal of the AND circuit (AND) is a contact (sb)
The other input terminal is connected to the timer circuit ('
IM) is connected to the output terminal of the IM.

When this AND circuit (AND) outputs a High signal, the High signal is input to the base of the switching transistor (Ts) via the OR circuit (OR), and the transistor (Ts) becomes conductive. The timer circuit ('y) outputs a High signal for a predetermined period of time when a High signal is input from the contact (sb) when the switch (SWl) is opened and a High11 signal is input to the reset terminal +R). Then outputs a low signal. This timer circuit (
The time during which the 1M) outputs the 1-1-1i signal is set to be longer than the time required to wind one frame of film. Therefore, during normal film winding, before the output signal of the timer circuit ('m) changes to a Low signal, the switch lever (30) rotates to the stop position and the contact piece (32) switches to the contact point (sb). to (Sa), and the rotation of motor (1) is stopped. On the other hand, because the film was wound to the end and stretched, the switch lever (3o)
%' does not rotate to the stop position i%', the transistor ('1 "S) is turned into a bad song, and the rotation of the motor (1) is stopped. The switch (Swl) is 1>;74
(13L) is closed in conjunction with the closing of the switch (
When Sw+) is closed, a Low signal is input to the reset terminal tR1 of the timer circuit (Th).
When this Low signal is input to the reset terminal (R1l), if a 11right signal is input from the contact (Sl), the IM) outputs the lligh signal, and even after a predetermined period of time has elapsed, it switches to the Low signal. I don't have it. by this,
The motor (moon) continues to rotate even in the initial winding, when the winding is higher than when the winding is on.

The contact (Sc) is connected to the base of the transistor (Ts) via a film detection switch (SW2) and an OR circuit (Ok). Film detection switch (5w
2), as shown in FIG. , opens when the film is not in contact with the detection part (5w2a).When the contact piece (32) is connected to the contact (Sc) and the film detection switch (Swz) is closed, the OR circuit (OR) is opened. Transistor (′1”
A high signal is input to the base of S) and the motor IL
+ rotates, the film is rewound, and when the film is rewound and leaves the detection unit (5w2a), the motor (1)
stops.

Referring again to FIG. 2, the locking plate (28) is connected to the lever (26).
) that engages with the upper end bent part (28 and interlocking & (29)
It is provided with a lower end locking part (28b) that engages with the lower end, is supported to move in the vertical direction, and is urged downward by a spring (28C). The lever (26) is rotatably supported around a horizontal axis, and has an arm portion (26b) that engages with a cam (27C) integrated with the counter plate (27), and a locking plate (28). The arm portion (2) engages with the upper end bent portion (28a).
6C) and a spring (28) that acts on the lock & (28).
C) and the contact piece of the switch (SWI) in the counterclockwise direction in the figure, but in the state shown in Figure 2 with the camera back open, the protrusion (24b) of the lever (24) or the arm The lever (26C) is engaged with the lower surface of the lever (26C), and the counterclockwise rotation of the lever (26) is stopped by 1:14.

The lever (23) includes a protrusion (23a) that is pushed clockwise in the figure by the back cover when the back cover (BL) is closed, and a pin that abuts against the arm (z4.a) of the lever (24). (
23b) and is biased counterclockwise by a spring (23C). When the back cover is opened, this lever (23) is in the position shown in Fig. 2, in contact with a knob (not shown).
When the back cover is closed, it is pushed by the back cover and rotates clockwise against the bias, and the pin (23b) pushes the coil spring (24C) on the lever (24) counterclockwise. . lever(
24) includes an arm (Z4a) that engages with the pin (23b) of the lever (23), a protrusion (24b) that engages with the lower surface of the arm (26C) of the lever (26), and a coil spring (24).
C), and in Fig. 2, it is rotated clockwise by being pushed by the pin (23b) of the lever (23),
The protrusion (24b) is in a position to prevent counterclockwise rotation of the lever (26). At this time, the tip notch (25b) of the shaft (25) is connected to the gear (25b) of the counter plate (27).
27b). On the other hand, when the fence lid is closed, the lever (24) is rotated counterclockwise by the lever (23), and the protrusion (24b) is rotated counterclockwise by the lever (23).
) of the arm (26C), and elastically contacts the gear (27b) of the counter plate (27) by the elastic force of the tip notch (251)) of the shaft (25) or the spring (24C), and the shaft (25) ) rotates the gear (27b) one tooth at a time.

The film counter plate (27) has letters and symbols on the top surface indicating the number of films.
34 and 36" are continuously marked, and are connected to a ratchet mechanism and a return mechanism (not shown). When the back cover is opened, the return mechanism returns to the initial position, and when the back cover is closed, the ratchet mechanism returns to the initial position. The mechanism causes the shaft (25) to stop at the position sent by the notch (25b) at the tip. The characters and symbols on the top of the film counter plate (27) are
Through the counter window (Cw) on the top of the camera shown in the figure,
It is configured so that multiple pieces can be observed, and depending on the index observed through the counter window (CW), ・Photographed □
, a letter or symbol corresponding to the number of films is indicated. When the counter plate (27) is at the initial position, the character direction is indicated.

Figures 5 to 0 are controls for switching the machining switch movement circuit during initial winding, from when the film cartridge is loaded until the film is wound so as to face the first frame of the film or both optical apertures (not shown). It shows the operation of the mechanism.

Figure 5 shows the camera back when it is opened, and the cam part (27C) of the counter (27) which has returned to its initial position has four parts (27a), lever (26), and no arm part (26b).
Located opposite the tip. The lever (26) is biased counterclockwise in the figure by the switch (SsνJ) and the locking plate (28), or by the protrusion (24) of the lever (24).
b) prevents counterclockwise rotation. The switch lever (3o) in the motor stop position is connected to the detection part (3o).
0b) into the notch (X5a) of the cam member (15), and the pin (3Ua) engages the interlocking plate (29).
The protrusion (29b) is moved to the left against the bias. Therefore, the right end protrusion (29C) of the interlocking plate (29) is
It faces the downward movement path of the locking plate (28).

When the back cover is closed from this state, the state shown in Figure 5 is reached. That is, when the lever (24) is rotated counterclockwise in FIG.
6C), use the lever (26) or switch (S
w], ), rotate it counterclockwise in the figure using the elastic force of the contact piece 1. As a result, the switch (SWI) is closed, and the output signal to the timer circuit ('I8) of the motor drive circuit cannot be switched from High to Low as described above.

Further, the locking plate (28) is lowered by the urging force of the spring (28C) and comes into elastic contact with the protrusion (29C) of the interlocking plate (29).

When the shirt release operation is performed from the open state in Figure 5, the shutter device (not shown) operates and the charge lever (
99) moves to the right in FIG. 2, the interlocking plate (29) is pushed to the right by the protrusion (29a) as shown in FIG.

As a result, the switch lever (30) is rotated to the hoisting position via the protrusion (29b) and pin (3Oa),
The detection part (30b) or the notch part (XS) of the cam part 1' (15)
a), and the hoisting operation by the motor (1) is started. On the other hand, as the interlocking plate (29) moves to the right, the protrusion (29C) retreats from the downward movement path of the locking plate (28), so the lower end of the locking plate (28) touches the protrusion (29C). It further descends from there and is located to the left of the protrusion (29C), stopping the leftward movement of the interlocking plate (29) by 1 it-1. As a result, the switch lever (30) is held at the winding position, and the winding can be continued continuously without being stopped after winding each frame, regardless of the rotational position of the cam member (15). or will be done.

Along with this winding operation, the sprocket (12) is driven by the perforation of the film and rotates, and the rotation causes the gears (12b), (13), (11), (9), shaft (101), gear (+0tC), (25a), axis (25
) is transmitted to the counter plate (27) via the gear (27b), and the counter (27) rotates to a position corresponding to the amount of film winding. When the $1 frame of film reaches both optical apertures (not shown), the counter plate (
The protrusion (27C) of the cam (27C) of the lever (27)
6) to move the lever (26),
It is rotated clockwise in the figure against the urging force of the locking section (28) and the switch (Swl).

As a result, the switch (SWI) is opened and the timer device (-111i4) is activated so that the output signal is switched from 1-1-1i to Low after a predetermined period of time, and the locking plate (28) is moved to the lever. (26), and the interlocking plate (29) is released from its lower step.

When the interlocking plate (29) is allowed to move to the left, the switch lever (30) snaps the detection part (30b) onto the outer periphery of the cam member (15) according to the urging force of the locking lever (31). They will come into contact with each other. After that, when winding is continued within the predetermined time, the detection part (30b) detects the cam member (15).
), the switch lever (30) rotates to the motor stop position and stops the hoisting operation.

Gear (105), (106), (107), (108)
, (109), (11,0) and (111) drive the motor fi+ from the gear (6) to the rewind shaft (112).
It constitutes a rewinding gear train that transmits the information to the

The gear (106) is a gear (10) that always meshes with the gear (6).
The lever (11) is supported to rotate about the axis of the lever (11).
4) It is supported by the upper shaft and moves between the rewinding position where it meshes with the gear (107) and transmits the rotation of the gear (105) to the gear (107), and the retracted position where it separates from the gear (1o7). It is supported to do so.

Gears (108), (]09), (110) and (11
, ] ) to Figure 6 and [! '', the rewind shaft holder (11, 5) is installed together with the rewind shaft (112) in the rewind shaft holder (11, 5), J:. The shaft boulder (115) is rotatably supported around the shaft (116) on the lower wall of the camera body. That is, as shown in FIG.
n7a) into the cartridge chamber, and as shown in Figure 6, the rewinding shaft (112) is retracted from the cartridge chamber, and the stopper part (115a)
17), and is supported so as to move together between the retracted positions in contact with the retracted position 1w, and is urged toward the retracted position 1w by a spring (not shown). In order to push away the locking lever (] 1.9) which is biased to the locking position shown in the illustration, the hook part (115b) is the locking part of the locking part 1/par (119). (119a). On the other hand, when the back cover is opened, the interlocking mechanism shown in Fig. 8 moves the locking lever (119) to the left in Fig. 6 and leaves the locking position, so that the shaft holder (1, 15) is moved by the biasing force. , move to the evacuation position.

In order to return the shaft holder (115) to the set position, the shaft holder (115) may be pushed to the set position after closing the back cover and returning the locking lever (119) to the locking position.

The gear (107) has a spur tooth portion (107a) that meshes with the gear (108) during driving force transmission, and a bevel tooth portion (107b) that has bevel teeth that are continuous to each of the spur teeth. Ori,
When the shaft holter (115) is in the set position, the spur tooth (1
07a) meshes with the gear (108), and the shaft holder (
115) is in the retracted position, the bevel tooth portion (107b) meshes with the gear (108). Therefore, regardless of the position of the shaft holder (115), the gear (107)
and (1,08), so the shaft holder (115)
When the gears (107) and (108) are moved to the retracted position,
) has disengaged and when rotating the shaft holder (115) from the retracted position to the center position again, the gear (107
) and (108) will not collide with each other and interfere with their rotation.

The unwinding shaft (112) is a gear (111) formed in a cylindrical shape.
It slides vertically into the boss (n1a) of the boss (n1a).
1, 1a) so as to rotate in one direction (a vertical groove (not shown) is formed on the inner wall of the boss (111, 1), and a protrusion (not shown) that fits therein is formed on the shaft (11, 2). ) and is urged upward by a spring (118). For this reason, after loading the cartridge, the shaft holder (11
5) If the concave part of the cartridge shaft and the fork part of the rewinding shaft do not engage when the cartridge is rotated to the set position, the rewinding shaft (]
, I1) resists the bias of the spring (1, 18) and rotates the gear (1, I1).
1]), but when the rewinding shaft and the P/Rone shaft rotate relative to each other, the spring (1)
18) causes the rewinding shaft (], I1) to rise by 1", causing the recess and the fork to engage.

When the rewind setting member (1, 24) in FIG. 7 is operated to the rewind setting position 1H as described later, the switch lever (3o)
At the same time, the gear (7) moves under the gear (9) in the "1" position and separates from the gear (8), and the rotation of the motor (1) is transmitted to the sprocket (1o). Meanwhile, the lever (114) rotates to a position where the gear (106) meshes with the gear (107).

The locking lever (11,9) has a locking portion (1t9a) and an arm portion (119b) for locking the rewinding shaft holder (1,], 5) as shown in FIG. 119C), and its arm (119b) is in elastic contact with a back cover opening/closing detection lever (33) having an arm (33b) that is pushed by the back cover (13L). When the back cover is opened, the lever (33) is rotated clockwise by the biasing force of the splash (34a) via the sliding plate (34), so the lever (33) is rotated clockwise against the splash (1), 9C). Locking lever (11, 9)
is rotated counterclockwise, and the locking portion (1), 9a) or the shaft holder (115) is retracted from the position where the shaft holder (115) is locked in the set position. When the camera back is closed, the lever (33) moves to the arm (33b).
) is pushed and rotates counterclockwise, so the locking lever (
1, 19) The shaft holder (115) is moved to the locking position by the biasing force of the cover spring (11, 9C). In addition, the lever (33) and the sliding plate (34) are the pin (33a) planted in the lever (33) or the branch part (34C) of the sliding plate (34).
) are connected to each other by fitting into the grooves (34d) formed in the grooves (34d).

Figure 7 shows a rewind setting mechanism for rewinding.

In Fig. 7, the rewind setting plate (124) has a bent portion (
1z4. a), (1, 24b), (124C) and an engagement hole (124, d), is supported to move in the left-right direction in the figure, and is biased leftward by a spring (124e). It comes into contact with a stopper (not shown) and is stopped at the position shown. The gear halter (1, 23) has a pin (1, 23) that engages with the bent portion (124a) of the rewind setting plate (124).
232), supports the gear (7), and is supported to swing around the rotation axis of the gear (6),
In the figure, it is urged clockwise by a spring ( ], 23b) and is stopped at the illustrated position by the engagement of the pin (123a) and the bent portion (124a).

The pin (30f) of the switch lever (30) has a bent part (
124c).The cartridge detection lever (18) has an additional part on its arm (], 8C) that can be hooked into the engagement hole (1, 24d) of the setting plate (124). (18d).

In Fig. 7, the lever (11, 4) has a bent portion (I
241)) Engaging pin/(1]4a) and gear (1
It has a shaft that supports the gear (105) and is supported to swing around the rotating shaft of the gear (105).
14b) in the counterclockwise direction, and the pins (1, 14
a) is in elastic contact with the bent portion (] 24 b).

Figure 7 shows a normal photographing state in which winding operation is possible, in which the gear (7) meshes with the spool gear (8) and the gear (
] I06 or gear (It) 7). From this state, operate the coaling setting operation member (not shown) connected to the rewind setting plate (124), and flip the setting plate (124) (1
24e), the engagement hole (1, 24d) is closed). As a result, the pin (I23a) of the gear holder (123) is pushed toward the bent portion (124a), so that
Rotate counterclockwise against the bias of the spring (123b) to separate the gear (7) from the spool gear (8).
Move the above-mentioned gear (9) located at one position below.

On the other hand, since the pin (114a) follows the bent part (124,b) due to the biasing force of the spring (114b), the lever (1, 14) rotates in the counterclockwise direction 81 in the figure and the gear ( 10
6) into mesh with the gear (107). Further, the switch lever (30) has a pin (30f) at a bent portion (124a).
), it rotates counterclockwise in the figure and stops at the rewind position. Rewind setting switch (film detection switch)
After SW2) is opened and the motor il+ is stopped, the motor il+ also stops at the position moved to the right.

After that, place the film cartridge in the cartridge room or on the setting board (
124) Gahane (], 24e)'? 7) Due to the bias, it moves to the left in the figure and returns to the state shown in FIG.

8 and 9, when the back cover is closed or the shaft holder (1, 15) is in the retracted position,
Release 1 to prevent shirt release operation; 1! The locking mechanism is shown.

The sliding plate (34) is supported so as to slide in the left-right direction in the figure, and is urged leftward by the spring (34a). A lever turn (35) is movably supported on the protrusion (34b) of the sliding plate (34). Lever (35)
The arm (35a) engages with the locking lever (31), the arm (351) engages with the protrusion (11C) of the shaft holder (115), and the lower wall (1, 20) of the camera. ), and is urged clockwise by the spring (35C) in the figure, and in the case of Figure 9, the arm (35b) or the lower wall (
120) and stopped. The lever (33) is
The tip of the arm (33b) faces the movement path of the camera back, and when the camera back is closed as described above, it rotates counterclockwise in FIGS. 2 and 8 and slides out. Slide the moving plate (34) to the right. When the camera back is opened and the shutter device is charged, the locking lever (31) slides to the left position in FIG. 2, as shown in FIG. 9, and the release plate (
100) is allowed to move downward, making it possible to perform a shirt release operation.

In addition, in this state, the locking lever (119) rotates counterclockwise in FIGS. 2 and 8 and retreats from the locking position in conjunction with the opening operation of the camera back. Holder (1
, 15) are always in the retracted position (even if they are rotated to the set position, they are not locked, so they return to the retracted position by the biasing force). When the back cover is closed, the lever (33) in Figures 2 and 8
is pushed counterclockwise by the back cover, so the sliding plate (34) moves to the right in the figure against the spring (34a), as shown in FIG. 9. Along with this, the lever (35) also moves to the right, and the locking lever (31
) is moved to the right in the figure against the force of the spring (31C). Therefore, the protrusion (3l b ) of the locking lever (31) faces the movement path of the release plate (100) and stops the release change. In this case, the take-up shaft bolt (1, 1, 5) is in the retracted position. When the shaft bolt (1, 15) is rotated to the center position from the state shown in FIG. 9, the shaft holder (], I 5
)'s protrusion (1,],,5 C) pushes the arm (35b) against the bias of the spring (35C) 1+i L, lever (35
) in the counterclockwise direction in the figure, move the arm (35a) or protrusion (3N) + from the engaging position and lock 4.
1.1! (31) allows the old force of Hane (31C) to move to the left in the diagram. As a result, the protrusion (311))
Then, the release plate (100) is retracted from the movement path and the release 1 is released.This release prevention mechanism allows the shaft holder (115) to be closed after closing the back cover when loading the fill cartridge. Avoid turning it to the set position 1
In this case, the shutter release operation is not performed because the release operation is blocked (I), and as shown in Figure 2, the interlocking plate (29) is pushed by the charge lever (99) and the switch lever (30)
Since the motor is not rotated from the stop position to the winding position, in the end the fill l, cartridge or rewind shaft (1, 12)
This prevents the winding operation from being performed without being supported by the winding mechanism.

In addition, the camera user can know that the shaft holder (115) is in the retracted position because the release operation is marked with I'l, and can immediately rotate it to the center position. can.

Hereinafter, in the lower margin, the effects of this embodiment will be explained in various cases.

(b) When no film is loaded In this case, the film detection lever (18) rotates clockwise due to the force of the spring (18) as shown to the third prisoner, and even if the back cover (BL) is closed, The plate spring (20) acts on the switching lever (21), so that the gear (9) is placed in a meshed state with the gear (8) (11).

If the rewinding shaft holder (115) is left in the retracted position after the back cover is closed, the state shown in FIG. be done. From this state, press the back cover (BI-) + open (
Alternatively, if the rewinding shaft holder (115) is rotated to the set position, the state shown in FIG.

Therefore, when the shirt release is activated, the interlocking plate (29) is pushed by the charge lever (99) and moves to the right in Figure 2, moving the switch lever (30) from the motor stop position to the winding position. Because it rotates, the motor (1) rotates, and its rotation is controlled by the gear (21 (31+4+ +51 +6+
(transmitted to the spool gear (8) via gear (71), and further transmitted to the gear (13) via gear (91 (11), pawl member (14) constituting a one-way clutch,
The shutter device is charged via the cam member (15), the cam gear (16), the charge plate (17), and the charge lever (99). In this case, the sprocket gear (1211) is also rotated by the rotation of the motor (1) through meshing with the gear (11).

(b) When loading film To load film in this camera, open the back cover (BL) as shown in Figure 1, then open the film cartridge * (Pl) all cartridge chambers ( P
C), place the tip of the film on the outer wall of the spool (10), close the back cover, and then insert the film into the rewind shaft holder C1.
15) to the set position.

When a film cartridge is loaded and the back cover is closed, the mechanism shown in Fig. 3 moves the gear (9) to the upper position, so the gears (7) and (9) are separated and the motor (
The rotation of 1) is transmitted to the spool gear (8), but is no longer transmitted to the gear (13) via the gears (9) and (11). When the shirt release operation is performed,
After the shutter device is activated by the mechanism shown in Fig. 5, continuous film winding is performed until the first frame of the film reaches the exposure aperture (AP). Sprocket (12
) is rotationally driven, the rotation is caused by the gears (13),
(11), (9), is transmitted to the film counter (27) via the shaft (101), gear (24a), gear (25a) and shaft (25) to perform counter feeding, and the gear (13) , claw member (14), cam member (15)
), the gear (16), and the charge plate (1υ) to transmit the charge to the shutter device to perform nyatta charge.

In this case, once the shutter device is charged, the charging plate (17) repeats reciprocating motion without pushing the charging lever (99).

e\) Film end normal winding ``2'', the film is wound frame by frame by actuation of the switch lever (30), and the shutter device is charged via the film perforations and sprocket. If the film is wound up to the final end and is stretched midway through the winding, the switch lever (30) will not move from the winding position to the stop position, so in the drive circuit shown in Figure 4, the contact piece (32) will not work as a contact. (sb), but at this time, the lever (26) is rotated clockwise by the part (27C) of the counter plate (27) as shown in Figure 5, and the switch (SWl) is opened. Therefore, the timer circuit (-IM) starts after a predetermined time.
The output signal switches from High to LOW, and the motor (1
) is stopped.

At this time, the release locking lever (31) pushed by the pin (30a) of the switch lever (30) moves to the release plate (
100), so it is in a position to prevent the descent of
Because you can't repeat the film, you only know when the film is finished.

)) Film rewinding To rewind the film, operate the rewind setting operation member located on the bottom of the camera and use the interlocking mechanism shown in Figure 7 to move the switch lever (30) to rewind. While moving the gear (106) to the gear (107),
Further, the gear (7) is moved below the gear (9) located at the upper position. As a result, the contact piece (32) is connected to the contact point (Sc) in the motor drive circuit, and rotation of the motor (1) is started. ), (107), (10
8), (109), (110) and (111) from the rewinding shaft (112) to the film cartridge shaft, and the film is rewinded. At this time, the spool (10) is rotatable because the gear (7) is retracted and disconnected from the gear (8). Sprocket (12
) is rotated by the film perforation in the opposite direction to that during winding, so the reverse rotation is transmitted to the film counter (27) via the shaft (25), and the film counter (27) adjusts the film rewind amount. Return to the initial position accordingly. The reverse rotation is from the gear (13) to the pawl vJ (14).
), but the information is transmitted to the pawl member (
Because slippage occurs between 14) and cam part +J (15),
The reverse rotation is not transmitted to the gear (16).

When film rewinding is complete, press the film detection switch (S
Since W2) is released from the pressure of the film and opens, the rotation of the motor (1) stops.

FIG. 10 shows another embodiment of the invention.

In this embodiment, when the back cover is closed and the rewind shaft holder (115) is in the retracted position, the switch lever (30) is prevented from moving directly from the stop position to the winding position, and the film winding Prevents the operation from occurring.

The sliding plate (34) and release plate (100) in Fig. 10
) Release lock lever (31), and rewind shaft holder (
The protrusion (115) and members not shown in FIG. 10 are the same as those in the embodiment shown in FIGS. 1 to 9.

The winding prevention lever (135) has a hook portion (1
35, and an arm portion (135) having a protrusion (135b).
It is pivoted on the bent part (34b) of the sliding plate (34) and biased clockwise by a spring (135d) in the figure. Department (
120). Release locking lever (31)
The protrusion (31d) has an engagement hole (31e) into which the hook (135a) can engage.

When the back cover is opened and the rewinding shaft holder (115) is in the retracted position, the sliding plate (34) is in a position moved to the left by the force of the spring (34a), and the protrusion (115) is Lever (1
Since the arm part (135J of
located far away from. For this reason, the locking lever (31)
The switch lever (3o) can be moved between the position shown by the solid line and the position shown by the chain line, and the switch lever (3o) can also be rotated to the hoisting position.

When the back cover is closed or the rewind shaft boulder (115) is in the retracted position, the lever (33) is pushed by the back cover and rotates, so the sliding plate (34) moves to the right against the splash (34) and rides on the protrusion (31d) by the inclined surface, and then the hook (135a
) engages with the engagement hole (31e), and the locking lever (31)
prevent movement to the right. Therefore, even if the shutter release operation is performed and the shutter device operates and the interlocking plate (29) shown in FIG. Since it is engaged with the protrusion (31b) of the stop lever (31), it does not rotate from the stop position to the winding position and film winding operation is not performed.When the back cover is opened from this state, the sliding Moving plate (34)
slides to the left, the inclined surface of the protrusion (135) is pushed by the protrusion (120a) of the lower wall (120), and
35d) and rotates counterclockwise against the bias of the hook (
135 releases the locking plate (31) and allows the switch lever (30) to rotate from the stop position to the hoisting position.
Film winding operation is performed. On the other hand, Figure 10 (to)
When the rewinding shaft holder (115) is returned to the set position from the state shown in FIG. , the lever (135) resists the bias of the spring (135d).
Since the hook portion (135) releases the locking plate (31), the film winding operation is performed in the same manner.

Although the illustrated embodiments have been described above, the present invention is not limited to the above-described embodiments. The blocking means that prevents the shirt release or winding operation when the detection means detects that the back cover (BL) is closed but the rewinding shaft holder (115) is not in the set position can be modified in various ways. It is possible. For example, in the circuit shown in Figure 4, a normally closed switch is provided in series with the contact (Sb), while in Figure 9, the arm (35) closes the switch only when the lever (35) reaches the position shown in 4. It is also possible to prevent the film winding operation by opening the film.This is an example of incorporating a switch into the blocking means for preventing the film winding operation, but if the camera is of an electromagnetic release type, a similar method may be used. By providing a switch in the electromagnetic release circuit, shirt release operation can be prevented.

Effects As explained above, when the back cover is closed and the seven rewind shaft holder is not in the set position, the camera of the present invention detects this and prevents the shirt release from operating, thereby indirectly Alternatively, the winding operation is directly controlled, so that the winding operation is not performed without the film cartridge being supported by the rewinding shaft, and the film is not damaged. Additionally, if the shirt release operation is blocked, the camera user will thereby know to move the rewind shaft holder to the set position. Note that when the back cover is opened, the above-mentioned blocking of the shutter release or winding operation is released, so it is also possible to check the camera's operation in this state.

In addition, as in the above-mentioned embodiment, the release operation blocking flat membrane engages with the release member that operates in response to the shirt release operation and prevents the release member from operating, and the blocking position is retracted from the blocking position. a release blocking member that moves to a released position, and an interlocking mechanism in which the force detection means moves the release blocking member to a blocking position in conjunction with closing of the back cover and movement of the rewinding shaft holder to a retracted position; If equipped, a switch member is provided, which is at the stop position where the winding operation is stopped when the winding operation is completed, and moves to the winding position where the winding operation is started after the shutter operation is completed, and this switch member is provided. Even by moving to 1st place 1η, the release inhibition is 11
When a part of the shrine is configured to be moved to the blocking position, the release operation is prohibited during the winding operation, eliminating the possibility of erroneous photography. Further, if the switch member is configured to be further moved to the rewind position by the rewind setting, and the release blocking member is also configured to be moved to the ejection position by moving the switch member to the rewind position. Furthermore, it is possible to prevent erroneous shooting during rewinding. Further, a locking means is provided which urges the rewinding shaft holder to the retracted position and resists the urging and locks the rewinding shaft holder at the set position only when the back cover is closed. If the back cover is closed, the rewind shaft holder will automatically move to the retracted position, making it easier to load the film cartridge.2.If the rewind shaft holder is inadvertently moved to the retracted position with the back cover closed. Since there is no movement, there is no possibility that the film will be erroneously exposed by light entering the film cartridge chamber through the opening L1 formed by the movement of the rewind shaft holder to the retracted position.

[Brief explanation of the drawing]

1 to 9 show an embodiment of the present invention. Fig. 1 is a perspective view of the camera according to the embodiment with the back cover open, Fig. 2 is an exploded perspective view of the internal mechanism of the camera, and Fig. 3 shows whether or not a film cartridge is loaded and the back cover. This is a perspective view of a mechanism that engages and disengages a gear train in conjunction with opening and closing, and (A) is a film/s. Figure [B] shows a state in which a film cartridge is not loaded in the camera and the back cover is open. Figure [B] shows a state in which a film cartridge is loaded in the camera but the back cover is open.
C] shows a state in which a film cartridge is loaded into the camera and the back cover is closed. Figure 4 is a circuit diagram of the motor drive circuit of the camera, and Figure 5 is an explanatory diagram of the initial winding control mechanism. Figure (B) shows the state immediately after the camera back has been closed, figure CC] shows the state after the shirt release has been activated after the camera back has been closed, and figure [D] shows the state after the initial winding]. Indicates the state when finished. Figure 6 is a fl+ side view of the rewinding shaft and the winding vertical shaft holder that supports it, CA) in the same figure shows when the rewinding shaft holder is in the set position, and [13] in the same figure shows whether the rewinding shaft holder is retracted or not. Indicates the case in position. Fig. 7 is a plan view of the rewind setting mechanism, and (A) of the mechanism shows the configuration for separating the spool gear from the gear train, the configuration for rotating the switch lever to the rewind position, and the assembly of the rewind setting section. Figure CB) shows a configuration in which the rewinding gear train is engaged with the drive gear train. Fig. 8 Hiruyuki≠ is a perspective view of the detection means for detecting the open/closed state of the camera back and the position of the rewind shaft holder, and Fig. 9 is a partially sectional side view of the main part of the detection means and the main part of the release prevention means. In the figure, (A) shows a state in which the back cover is opened and the rewind shaft holder is in the retracted position;
] shows a state in which the back cover is closed but the rewinding shaft holder is in the retracted position, and (C) of the same figure shows a state in which the back cover is closed and the rewinding shaft holder is in the set position. No. i. The figure is a partially sectional side view 1 of the main part of the detection means and the main part of the hoisting operation prevention means in another embodiment of the present invention, and FIG.
(112) shows the state in which the back cover is open and the rewinding shaft holder is in the retracted position, and the figure (stand) shows the state in which the back cover is closed and the rewinding shaft holder is in the retracted position. ... Rewinding shaft, (pT) ... Film cartridge (115) ... Rewinding shaft holder, (33) (3
4) (35) (135)... detection means (interlocking mechanism),
(31)...Release operation blocking means (release blocking member), (100)...Release member, (31)...Release blocking member, (30)(32)...Sui-Sochi part shrine, ( 1, 19)... Rewinding shaft holder locking means, (]
, 35 a) (31) ... Hoisting operation prevention means Applicant: Minolta Camera Co., Ltd. Figure 3 LA)

Claims (1)

[Scope of Claims] 1. A rewinding shaft that engages with the cartridge shaft of a film cartridge, a set position in which the rewinding shaft is supported, the rewinding shaft engages with the cartridge shaft, and a setting position where the rewinding shaft engages with the cartridge shaft, and a state where the engagement is released. a rewind shaft holder supported to swing to a retracted position; a detection means for detecting the open/closed state of the camera back cover and the position of the rewind shaft holder; 2. A camera characterized in that the camera is provided with a release 1; and 2. stop means for preventing the shirt release from operating when it is detected that the rewind shaft holder is not in the set position. 2. The release blocking means moves between a blocking position in which it engages with the release member activated in response to the shirt release operation and prevents its operation, and a release position in which it is evacuated from the blocking position. 2. The camera according to claim 1, further comprising a locking member, and said detecting means having an interlocking mechanism for closing and closing the back cover. 3. The hoisting operation means is provided with a switch member that is in a stop position where the hoisting operation is stopped when the hoisting operation is completed, and moves to a hoisting position where the hoisting operation is started after the shutter is activated, and the above-mentioned release 3. The camera according to claim 2, wherein the camera is constructed by blocking. 4. The switch member is further movable to a rewinding position for performing a rewinding operation, and the movement of the release locking member to the blocking position is also linked to the movement of the switch member to the rewinding position. The camera according to claim 6, characterized in that the camera is configured to perform the following operations. 5. A locking means for resisting the urging and locking the rewinding shaft holder in the set position only when the rewinding shaft holder is urged to the retracted position and the back cover is closed. A camera according to claim 1, characterized in that: 6. A rewind shaft that engages with the cartridge shaft of the film cartridge, and a rewind shaft that supports this rewind shaft and swings between a set position where the rewind shaft engages with the cartridge shaft and a retracted position where the engagement is released. a rewind shaft holder supported to move; a detection means for detecting the open/closed state of the camera back cover and the position of the rewind shaft holder; 1. A camera comprising: winding operation blocking means for blocking film winding operation when it is detected that the rewinding shaft holder is not in the set position.