JPH08240846A - Locking mechanism for light shielding door of film cartridge and opening/closing cover of film cartridge loading port - Google Patents

Abstract

PURPOSE: To prevent film and a light shielding door from being damaged by making the manual operation of a locking mechanism for the opening/closing cover of a film cartridge loading port impossible in the case of detecting the film ejected from a film cartridge. CONSTITUTION: This locking mechanism for light shielding door for opening/ closing the film ejecting/inserting opening of the film cartridge 1 and the opening/closing cover 50 of the film cartridge loading port is constituted of a driver 51, a gear part 51b, an interlocking arm 53, a relay lever 60, a film detection pin 63, an interlocking rod 65 and a tension spring 70, and the cover 50 is locked by the manual operation. When the detection pin 63 detects the film ejected from the film cartridge 1, the rod 65 is moved interlocking with the movement of the detection pin 63, and one end 65d of the rod 65 is engaged with the back part 53c of the locking pawl 53a of the arm 53. In such a state, the locking pawl 53a is put between one end 65d of the rod 65 and the engaging part 50a of the cover 50, thereby, the locking of the cover 50 can not be manually released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film cartridge light-shielding door and a film cartridge loading port opening / closing lid locking mechanism.

[0002]

2. Description of the Related Art US Pat. No. 5,122,
As known from JP-A No. 820 and JP-A No. 5,296,887, etc., in the unused state, even the leading end of the film is wound into the cartridge, and the light-shielding door provided in the cartridge is opened during use. There has been proposed a camera film cartridge having a structure in which a spool in the cartridge is rotated to discharge the film from the light shielding door.

When the film cartridge is inserted into the cartridge chamber of the camera, the rotary shaft end of the light shielding door engages with the light shielding door opening / closing driver provided in the cartridge chamber, and then the film cartridge loading port of the camera. When locking the open / close lid (for example, the back lid) to close the
The structure is designed to open the light blocking door by rotating the light blocking door opening / closing driver. After the series of photographing operations, when the lock of the opening / closing lid is released to take out the film cartridge, the light shielding door opening / closing driver rotates in the opposite direction to close the light shielding door.

In a camera using this type of film cartridge, the user carelessly operates the camera before the film is completely wound into the film cartridge, that is, when the film is discharged from the film cartridge into the camera. If you unlock the lid, the film will be exposed. Further, since the light-blocking door of the film cartridge is closed in association with the release of the lock, there is a problem that the film is caught in the light-blocking door and is damaged, and the light-blocking door is also damaged.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. The film is formed by unlocking the lock of the opening / closing lid of the camera before the film is completely wound into the film cartridge. An object of the present invention is to provide a lock mechanism for a film cartridge light-shielding door and a film cartridge loading port opening / closing lid that can prevent the light-shielding door and the light-shielding door from being damaged.

[0006]

SUMMARY OF THE INVENTION A lock mechanism for a film cartridge light-shielding door and a film cartridge loading opening opening / closing lid of the present invention comprises a cartridge outer frame having a spool therein; a film discharge / inlet opening formed in the cartridge outer frame; A loading port for loading and unloading a film cartridge in a camera capable of loading a film cartridge, which is provided rotatably along the loading and unloading opening and which opens and closes the film loading and unloading opening; An open / close lid that opens and closes the mouth; an open / close lid lock mechanism that locks the open / close lid by manual operation; when the open / close lid is locked by the open / close lid lock mechanism, the light shielding door is opened and the lock is released. And a light-shielding door opening / closing mechanism that closes the light-shielding door; a detection that detects the presence or absence of film discharged from the film cartridge Stage and; when the detecting means detects the film is inoperable the lid locking mechanism, when not detected a regulating means for enabling operating the lid lock mechanism; is characterized by having a.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to illustrated embodiments. FIG. 28 shows a vertical sectional view of a camera 30 to which the present invention is applied. This camera 30 is used as a photographic film in US Pat.
A film cartridge of the type known from Japanese Patent No. 296,887 is used. First, the film cartridge will be described. FIG. 29 is a perspective external view showing this film cartridge.

The film cartridge 1 has a cartridge outer frame 3 composed of a pair of outer frame halves 5 and 7. A spool 11 around which a film (not shown) is wound is housed in the internal space of the cartridge outer frame 3. At the center of the end surface 13 of the cartridge outer frame 3, the spool 11
A hole 15 is formed to expose the fork engaging hole 11a formed at the shaft end of the shaft to the outside.

Further, the cartridge outer frame 3 is formed with a rectangular film discharging / injecting opening 17 along the longitudinal direction thereof, and along the film discharging / injecting opening 17, a light shielding door for opening / closing the film discharging / injecting opening. 19 are provided.
Shafts 19a are integrally formed at both ends in the longitudinal direction of the light shielding door 19, and the shafts 19a are rotatably fitted in holes 21 formed in the end surface 13 of the cartridge outer frame 3. ing. In FIG. 29, one shaft portion 19a is
Then, only one hole 21 corresponding to the shaft portion 19a is shown. A key groove 19b into which a driver 51 (FIG. 5) provided on the camera 30 side is fitted is provided on the end surface of the shaft portion 19a.
Are formed. The light shielding door 19 is opened and closed by the rotation of the driver 51 fitted in the key groove 19b.
When the light shielding door 19 is opened, the spool 11
By rotating, the film can be discharged from the film discharge / inlet opening 17 to the outside of the cartridge outer frame 3 or stored therein.

The camera 30 will be described in detail below. Inside the camera 30, a spool chamber 31 and a cartridge chamber 32 are formed on the left and right. A spool 33 is rotatably provided in the spool chamber 31. Cartridge chamber 3
A drive fork 34 that engages with the fork engaging hole 11a of the film cartridge 1 is provided inside the cartridge 2 in a state of protruding from the center of the upper end 32a of the cartridge chamber 32 into the cartridge chamber 32.

An aperture 39 is formed between the spool chamber 31 and the cartridge chamber 32 by the left and right aperture frames 35, 36 and the upper and lower aperture frames 37, 38 to determine the photographing range of one frame of film. Behind this aperture 39, there is a film F with respect to the aperture 39.
A pressure plate 48 that restricts the movement of the optical disc in the optical axis direction is fixedly provided inside the camera. The film F discharged from the film cartridge 1 passes between the pressure plate 48 and the aperture frames 35, 36, 37, 38, and the spool 33.
To be wound up.

A film pressing leaf spring 41 is fixed to a side portion 35a of the aperture frame 35 on the spool chamber 31 side. A film pressing roller 40 elastically contacted with the spool 33 by the film pressing plate spring 41 is provided at the tip of the film pressing plate spring 41. Note that reference numerals 43, 44, and 45 respectively indicate a finder, a taking lens, and a release button.

The camera 30 has a structure in which the film cartridge 1 is inserted into the cartridge chamber 32 via a loading port 47 formed in the camera bottom portion 46. The camera bottom 46 has a loading port 47 hinged to the shaft 49.
An opening / closing lid 50 for opening and closing is provided. Further, inside the camera 30, a driver 51 that is projected into the cartridge chamber 32 is provided.

FIG. 1 shows a main part according to the present invention when the opening / closing lid 50 is opened, and FIG. 2 shows the main part when the opening / closing lid 50 is closed. The driver 51 is provided so as to project into the inside of the cartridge chamber 32 through a hole (not shown) formed in the upper end 32a of the cartridge chamber 32, and is rotatable about an axis 51a of the camera 30. It is supported by an internal fixed portion (not shown).

Inside the camera 10, a cartridge chamber 32 is provided.
An interlocking arm 53 is arranged along the inner side wall. The interlocking arm 53 has a portion slightly below the center portion thereof supported by a fixed portion (not shown) inside the camera 30 so as to be rotatable about a shaft 54. At the lower end of the interlocking arm 53, an engaging portion 5 formed on the opening / closing lid 50 is provided.
0a is formed with a locking claw 53a, and the upper end is
A fork portion 53b that engages with the relay lever 60 is formed. An opening / closing knob 55 is provided on one side of the body of the camera 30.
By manually operating the opening / closing knob 55, the interlocking arm 53 rotates about the shaft 54. Engaging portion 50a, interlocking arm 53, opening / closing knob 5
An opening / closing lid lock mechanism is constituted by 5 and the like.

A relay lever 60 is provided above the cartridge chamber 32 inside the camera 30 so as to be rotatable about a shaft 61 having the same rotation center as the drive fork 34. The relay lever 60 is formed with an engagement arm portion 60a that engages with the fork portion 53b of the interlocking arm 53, and a fan-shaped gear portion 60b that meshes with the gear portion 51b formed on the upper portion of the driver 51. Driver 51,
The gear portion 51b, the interlocking arm 53, the relay lever 60, and the like constitute a light blocking door opening / closing mechanism.

Inside the camera 30, there are provided a film detection pin 63 located near the cartridge chamber 32 and an interlocking rod 65 that engages with the film detection pin 63. The film detection pin 63 has two guide elongated holes 63a formed along the longitudinal direction thereof, and each of the guide elongated holes 63a is provided in a fixed portion (not shown) inside the camera 30. A guide pin 67 is attached. The film detection pin 63 is provided with these guide long holes 6
It is supported by 3a and the guide pin 67 so as to be movable in a direction substantially perpendicular to the surface of the film F located on the pressure plate 48. Film detection pin 63 facing the pressure plate 48
One end 63b of the hole 3 is formed in the hole 3 formed in the aperture frame 38.
A predetermined amount can be projected to the pressure plate 48 side through 8a. The end surface of the one end portion 63b gradually slopes toward the front of the camera 30 (downward in FIG. 3) as it goes to the right side of the camera 30 (the side toward the cartridge chamber 32).
e. The film detection pin 63 is provided on the pressure plate 48.
A receiving recess 48a that engages with the end 63b is formed at a position facing the end 63b.

The interlocking rod 65 is a film detecting pin 63.
And is provided along a direction substantially orthogonal to the moving direction of the film detection pin 63 and coinciding with the substantially left-right direction of the camera 30. The interlocking rod 65 is formed with two guide elongated holes 65a along the longitudinal direction thereof, and each guide elongated hole 65a is provided with a corresponding fixing portion (not shown) inside the camera 30. A guide pin 68 is attached. The guide elongated hole 65a and the guide pin 68 allow the interlocking rod 65 to move within a predetermined range in a direction substantially orthogonal to the moving direction of the film detection pin 63 and substantially in the left-right direction of the camera 30. In addition, the interlocking rod 65 is provided with a tension spring 70 having a relatively weak urging force, which is provided in the vicinity of the interlocking rod 65, so that the camera 30
Is always urged in the left direction, that is, in the direction toward the film detection pin 63.

The other end 63c of the film detection pin 63
Is formed with an inclined hole 63d extending in a direction inclined with respect to the longitudinal direction of the film detection pin 63, and a pin 65c planted at one end portion 65b of the interlocking rod 65 is fitted into the inclined hole 63d. ing. The inclined hole 63d has a shape that gradually inclines rearward of the camera 30 (upward in FIG. 3) toward the right side of the camera 30. When the film detection pin 63 moves to the pressure plate 48 side by the inclined hole 63d and the pin 65c, the interlocking rod 65 moves to the left of the camera 30 in conjunction with this movement, and conversely the film detection pin 63 moves. When moving in a direction away from the pressure plate 48, the camera 30 moves to the right in conjunction with this movement. Therefore, the film detection pin 6
As shown in FIG. 3, 3 is constantly urged toward the pressure plate 48 by the action of the tension spring 70.

The interlocking rod 65 is interlocked with the movement of the film detection pin 63 when the locking claw 53a of the interlocking arm 53 is engaged with the engaging portion 50a of the opening / closing lid 50, and the interlocking rod 65 is on the right side of the camera 30. When it is moved to, the other end portion 65d of the interlocking rod 65 protrudes on the movement (rotation) locus of the interlocking arm 53 and the locking claw 5 of the interlocking arm 53.
It is arranged so as to engage with the back portion 53c of 3a. The lock mechanism of the film cartridge light-shielding door and the film cartridge loading opening opening / closing lid of the present invention in this embodiment includes a driver 51, a gear portion 51b, an interlocking arm 53, a relay lever 60, a film detecting pin 63, an interlocking rod 65, and a tension spring 70. Etc.

The lock mechanism of the present invention having the above structure operates as follows. The film cartridge 1 is
When the opening / closing lid 50 shown in FIG. 1 is in the opened state, it is inserted into the cartridge chamber 32. When the film cartridge 1 is properly inserted into the cartridge chamber 32, the driver 51 causes the key groove 19b of the film cartridge 1 to move.
Fit in. At this time, the light-shielding door 19 of the film cartridge 1 has not been opened yet (FIGS. 3 and 4).

Next, the opening / closing lid 50 is manually closed, and subsequently, in order to lock the opening / closing lid 50, the opening / closing knob 55 is manually pushed.
Is rotated in a direction in which the lock claw 53a engages with the engaging portion 50b (clockwise direction in FIG. 4). Then, the interlocking arm 53
Also rotates in the same direction, so that the fork portion 53b moves the engaging arm portion 60a from left to right in FIG. 4, and as a result, the relay lever 60 rotates counterclockwise in FIG. The rotation of the relay lever 60 is performed by the fan-shaped gear portion 60b and the gear portion 51b.
To the driver 51, which causes the driver 51 to rotate in the clockwise direction in FIG. By this rotation, the driver 51 opens the light blocking door 19 of the film cartridge 1 (FIGS. 5 and 6).

After opening the light-shielding door 19, the film F in the film cartridge 1 is sent to the spool chamber 33. At this time, the film F becomes the film detection pin 6
It goes toward the spool chamber 33 by passing over the slope 63e of No. 3. The urging force of the tension spring 70 is set to be weaker than the force with which the film F pushes the film detection pin 63 toward the rear of the camera 30. Therefore, the film F has the tension spring 70.
The film detection pin 63 is pushed toward the rear of the camera 30 against the urging force of. The interlocking rod 65 moves toward the right side of the camera 30 in conjunction with the movement of the film detection pin 63, and as a result, the other end portion 65d of the interlocking rod 65 becomes
It engages with the back portion 53c of the lock claw 53a of the interlocking arm 53 (FIGS. 2, 7, and 8). That is, the other end 65d of the interlocking rod 65 is moved to a position where it interferes with the opening / closing lid lock mechanism. In this state, the lock claw 53a is locked by the interlocking rod 6
Since it is sandwiched between the other end portion 65d of 5 and the engaging portion 50a of the opening / closing lid 50, the opening / closing lid 50 cannot be unlocked.

When the film F is wound into the film cartridge 1 after a series of photographing operations or during midway rewinding, the restriction of the end 63b of the film detection pin 63 by the film F is released, so that the interlocking rod 65 is moved. It moves toward the left side of the camera 30 by the urging force of the tension spring 70, and in conjunction with this movement, the film detection pin 63 moves toward the pressure plate 48 to receive the end 63b in the receiving recess 48.
engage a.

According to the above structure, when the film F is discharged from the film cartridge 1, the opening / closing lid 50 cannot be unlocked and the light-shielding door 19 of the film cartridge 1 is also locked in the open position. ,
The opening / closing lid 50 is not inadvertently opened in a state in which the film F is discharged from the film cartridge 1, and the film F is not pinched by the light shielding door 19.

9 to 16 show a second embodiment of the lock mechanism for the film cartridge light-shielding door and the film cartridge loading port opening / closing lid of the present invention. In the second embodiment, the same members as those in the above-described embodiment (first embodiment) are designated by the same reference numerals. In the second embodiment, a relay arm 81 that connects the film detection pin 75 and the interlocking rod 83 is provided between the film detection pin 75 and the interlocking rod 83. These film detection pins 75,
The structure is the same as that of the first embodiment except for the configurations of the interlocking rod 83 and the relay arm 81.

The film detection pin 75 is shorter than the film detection pin 63 of the first embodiment, and substantially the same as the film detection pin 63 of the first embodiment with respect to the surface of the film F positioned on the pressure plate 48. It is movably supported in the vertical direction. The film detection pin 75 is the film detection pin 7
The guide protrusions 77 are located on both sides of the film 5 and are implanted in a fixed portion (not shown) inside the camera 30 to guide the film F on the pressure plate 48 in a substantially vertical direction. An end surface of one end portion 75 a of the film detection pin 75 facing the pressure plate 48 has a slope 75 b that gradually inclines toward the front of the camera 30 toward the right side of the camera 30. This slope 75b is the slope 63 of the first embodiment.
It has the same function as e.

In the vicinity of the film detection pin 75, the camera 3
A relay arm 81 pivotally attached to a pin 79 planted in a fixed portion (not shown) inside the 0 is provided. The relay arm 81 is a "V" -shaped member whose pivotally-attached portion is bent, and has a short arm portion 81a and a long arm portion 81b.
A guide long hole 81c is formed at the end of the short arm portion 81a, and a pin 75c formed at the other end of the film detection pin 75 is fitted in the guide long hole. On the other hand,
A guide elongated hole 81d is formed at an end of the long arm portion 81b, and a pin 83b planted at one end portion 83a of the interlocking rod 83 is fitted into the guide elongated hole 81d.

The interlocking rod 83 is positioned at both sides of the interlocking rod 83 and is guided substantially perpendicularly to the moving direction of the film detecting pin 75 by the guide projections 85 which are planted in a fixed portion (not shown) inside the camera 30. In addition, the camera 30 is supported so as to be movable in a direction substantially matching the left-right direction of the camera 30. The interlocking rod 83 moves to the right side of the camera 30 in conjunction with the movement of the film detection pin 75 when the lock claw 53a of the interlocking arm 53 is engaged with the engaging portion 50a of the opening / closing lid 50. At this time, the other end portion 83c of the interlocking rod 83 is arranged so as to project on the locus of movement (rotation) of the interlocking arm 53 and engage with the back portion 53c of the lock claw 53a of the interlocking arm 53.

The lock mechanism of the second embodiment of the present invention having the above structure operates as follows. The film cartridge 1 is inserted into the cartridge chamber 32 when the opening / closing lid 50 shown in FIG. 9 is open. When the film cartridge 1 is properly inserted into the cartridge chamber 32, the driver 51 fits into the key groove 19b of the film cartridge 1. At this time, the light blocking door 19 of the film cartridge 1 is not yet opened (FIG. 11,
(FIG. 12).

Next, the opening / closing lid 50 is manually closed, and subsequently, in order to lock the opening / closing lid 50, the opening / closing knob 55 is manually pushed.
Is rotated in a direction in which the lock claw 53a engages with the engaging portion 50b (clockwise direction in FIG. 12). Then, the interlocking arm 5
3 also rotates in the same direction, so that the fork portion 53b moves the engaging arm portion 60a from left to right in FIG. 4, and as a result, the relay lever 60 rotates in the counterclockwise direction in FIG. The rotation of the relay lever 60 is caused by the fan-shaped gear portion 60b and the gear portion 51.
It is transmitted to the driver 51 via b, so that the driver 51 rotates in the clockwise direction in FIG. This rotation causes the driver 51 to move the film cartridge 1
The light shielding door 19 of is opened (FIGS. 13 and 14).

After opening the light-shielding door 19, the film F in the film cartridge 1 is sent to the spool chamber 33. At this time, the film F becomes the film detection pin 7
Since it goes toward the spool chamber 33 on the slope 75b of No. 5, the film detection pin 75 is pushed rearward of the camera 30 against the biasing force of the tension spring 70. In conjunction with the movement of the film detection pin 75, the relay arm 81 is moved to the position shown in FIG.
Rotates in the counterclockwise direction, and this rotation moves the interlocking rod 83 toward the right side of the camera 30. As a result, the other end 83c of the interlocking rod 83 moves the other end 83c.
Engages with the back portion 53c of the lock claw 53a (FIG. 10, FIG. 15, FIG. 16). That is, the other end portion 83c of the interlocking rod 83
Is moved to a position where it interferes with the open / close lid lock mechanism. In this state, since the lock claw 53a is sandwiched between the other end portion 83c of the interlocking rod 83 and the engaging portion 50a of the opening / closing lid 50, the opening / closing lid 50 cannot be unlocked.

When the film F is wound into the film cartridge 1 after the end of a series of photographing or rewinding on the way, the regulation of the end portion 75a of the film detection pin 75 by the film F is released, so that the interlocking rod 83 moves. It moves toward the left side of the camera 30 by the urging force of the tension spring 70, and the relay arm 81 interlocks with this movement, as shown in FIG.
In the clockwise direction, and this rotation causes the film detection pin 75 to move toward the pressure plate 48 to engage the end 75a with the receiving recess 48a.

According to the above structure, like the first embodiment, when the film F is being discharged from the film cartridge 1, the unlocking of the opening / closing lid 50 is not possible, and the light shielding door 19 of the film cartridge 1 is also not possible. Since the film F is locked in the open position, the opening / closing lid 50 is not accidentally opened while the film F is discharged from the film cartridge 1, and the film F is not pinched by the light shielding door 19.

17 to 27 show a third embodiment of the lock mechanism of the film cartridge light-shielding door and the film cartridge loading opening opening / closing lid of the present invention. In this third embodiment, the same members as those in the first embodiment are designated by the same reference numerals.

The film detection pin 90 in this third embodiment
Also, the film detection pin 63 of the first and second embodiments,
Like 75, it is supported movably in a direction substantially perpendicular to the surface of the film F located on the pressure plate 48. Two elongated guide holes 90a are formed in the film detection pin 90 along the longitudinal direction thereof, and a corresponding guide pin 67 is fitted in each elongated guide hole 90a. Further, the film detection pin 90 is attached to the pressure plate 48 by the tension spring 94.
Always urged in the direction toward. An inclined surface 90c, which is similar to the above-described inclined surfaces 63e and 75b, is formed on one end portion 90b of the film detection pin 90 that faces the pressure plate 48.

A cartridge chamber 32 is provided inside the camera 10.
Place it on the opposite side of the interlocking arm 53 with the
An interlocking rod 96 is provided. This interlocking rod 96
Is connected to the film detection pin 90 and extends in a vertical direction substantially orthogonal to the moving direction of the detection pin. Inside the camera 30, a portion slightly below the central portion is rotatable about a shaft 98. Is supported by a fixed part (not shown). A hole 96a is formed at the lower end of the interlocking rod 96, and a pin 90 which is planted on one side of the film detection pin 90 and extends to the right of the camera 30 is formed in the hole 96a.
d is fitted. An engaging pin 96b extending rightward of the camera 30 is formed on the upper end of the interlocking rod 96.

The gear portion 51b is formed with an engaging arm portion 100 which is horizontally projected by a predetermined length from a predetermined position in the circumferential direction of the gear portion 51b. This engaging arm 10
0 and the engaging pin 96b are arranged so as to be substantially located on the same horizontal plane.

The lock mechanism of the third embodiment of the present invention having the above structure operates as follows. The film cartridge 1 is inserted into the cartridge chamber 32 when the opening / closing lid 50 shown in FIG. 17 is open. When the film cartridge 1 is properly inserted into the cartridge chamber 32, the driver 51 fits into the key groove 19b of the film cartridge 1. At this time, the light-shielding door 19 of the film cartridge 1 has not been opened yet, and the engagement arm portion 100 is located at a position extending substantially to the left of the camera 30 (FIGS. 19, 20, and 21). .

Next, the opening / closing lid 50 is manually closed, and subsequently, in order to lock the opening / closing lid 50, the opening / closing knob 55 is manually pushed.
Is rotated in the direction in which the lock claw 53a engages with the engaging portion 50b (clockwise direction in FIG. 20). Then, the interlocking arm 5
3 also rotates in the same direction, so that the fork portion 53b moves the engaging arm portion 60a from left to right in FIG. 20, and as a result, the relay lever 60 rotates counterclockwise in FIG. The rotation of the relay lever 60 is transmitted to the driver 51 via the fan-shaped gear portion 60b and the gear portion 51b, so that the driver 51 rotates clockwise in FIG. By this rotation, the driver 51 opens the light shielding door 19 of the film cartridge 1 (see FIGS. 22, 23, 2).
4). Further, the rotation of the driver 51 moves the position of the engagement arm portion 100 to a position extending substantially in front of the camera 30. At this time, the engaging arm portion 100 has the engaging pin 96b.
It is located in the vicinity.

After opening the light shielding door 19, the film F in the film cartridge 1 is sent out toward the spool chamber 33. At this time, the film F is detected by the film detection pin 9
Since it goes toward the spool chamber 33 through the zero slope 90c, the film detection pin 90 is pushed rearward of the camera 30 against the biasing force of the tension spring 94. In conjunction with the movement of the film detection pin 90, the interlocking rod 96 is moved to the position shown in FIG.
4 rotates clockwise, and as a result, the interlocking rod 96
The tip end portion of the engaging pin 96b is engaged with the engaging arm portion 100 (FIGS. 25, 26, 27). That is, the engagement pin 96b of the interlocking rod 96 is moved to a position where it interferes with the light blocking door opening / closing mechanism. At this time, the tip of the engagement pin 96b is positioned on the movement (rotation) locus of the engagement arm 100, and the camera 30
Since it engages with the side portion 100a of the engaging arm portion 100 facing leftward, the engaging arm portion 100 is prevented from rotating about the shaft 51a in the counterclockwise direction in FIG. Therefore,
Since the driver 51 and the relay lever 60 are prevented from rotating, the light-shielding lid 19 is not closed and is locked in its open position, and the opening / closing lid 50 cannot be unlocked.

When the film F is wound into the film cartridge 1 after a series of photographing operations or during rewinding, the regulation of the end portion 90b of the film detection pin 90 by the film F is released.
0 moves toward the rear of the camera 30 by the urging force of the tension spring 94, and the end 90b is engaged with the receiving recess 48a. At the same time, the interlocking rod 96 rotates counterclockwise in FIG. 27, and as a result, the engagement pin 96b and the engagement arm 10
The engagement of 0 is released. At this time, since the engagement arm portion 100 is rotated about the shaft 51a in the counterclockwise direction in FIG. 18, the lock of the opening / closing lid 50 can be released.

According to the above structure, like the first and second embodiments, when the film F is being discharged from the film cartridge 1, the opening / closing lid 50 cannot be unlocked and the film cartridge 1 is shielded from light. Since the door 19 is also locked in the open position, the opening / closing lid 50 is not opened carelessly when the film F is discharged from the film cartridge 1, and the film F is not pinched by the light shielding door 19.

[0044]

As described above, according to the film cartridge light-shielding door and the film cartridge loading opening opening / closing lid locking mechanism of the present invention, the opening / closing lid of the camera is locked before the film is completely wound into the film cartridge. Is not released and the light-shielding door of the film cartridge is not closed, so damage to the film by the light-shielding door and damage to the light-shielding door itself can be prevented. The film will not be exposed because it is easily opened.

[Brief description of drawings]

FIG. 1 is a perspective view showing an essential part of a first embodiment of a lock mechanism for a film cartridge light-shielding door and a film cartridge loading opening opening / closing lid of the present invention in a state where the opening / closing lid is opened.

FIG. 2 is a perspective view showing an essential part of the figure with the opening / closing lid locked and a film detection pin detecting a film.

FIG. 3 is a cross-sectional view showing a main part of FIG.

FIG. 4 is a vertical cross-sectional view of the main part of FIG.

5 is a transverse cross-sectional view showing the main part of the same figure in the process of transition from the state shown in FIG. 1 to the state shown in FIG.

FIG. 6 is a vertical cross-sectional view of the main part of FIG.

7 is a cross-sectional view showing the main parts of FIG.

FIG. 8 is a vertical cross-sectional view of the main part of FIG.

FIG. 9 is a perspective view showing a main part of a second embodiment of the lock mechanism of the film cartridge light-shielding door and the film cartridge loading opening opening / closing lid of the present invention with the opening / closing lid opened.

FIG. 10 is a perspective view showing the essential part of the same figure with the opening / closing lid locked and the film detection pin detecting a film.

11 is a cross-sectional view showing the main parts of FIG.

FIG. 12 is a vertical cross-sectional view of the main part of FIG.

FIG. 13 is a transverse cross-sectional view showing the main parts of the same figure in the process of transition from the state shown in FIG. 9 to the state shown in FIG.

FIG. 14 is a vertical cross-sectional view of the main part of FIG.

15 is a cross-sectional view showing the main parts of FIG.

FIG. 16 is a vertical cross-sectional view of the main part of FIG.

FIG. 17 is a perspective view showing an essential part of a third embodiment of the lock mechanism of the film cartridge light-shielding door and the film cartridge loading opening opening / closing lid of the present invention.

FIG. 18 is a perspective view showing the main part of the same figure with the opening / closing lid locked and the film detection pin detecting a film.

19 is a cross-sectional view showing the main parts of FIG.

FIG. 20 is a vertical cross-sectional view of the main part of the same figure.

21 is a vertical cross-sectional view of the main part shown in FIG.

22 is a transverse cross-sectional view showing the main parts of the same figure in the process of shifting from the state shown in FIG. 17 to the state shown in FIG.

FIG. 23 is a vertical cross-sectional view of the main part of FIG.

24 is a vertical cross-sectional view of the main part of FIG.

25 is a cross-sectional view showing the main parts of FIG.

FIG. 26 is a vertical cross-sectional view of the main part of FIG.

27 is a vertical cross-sectional view of the main part of FIG. 25.

FIG. 28 is a vertical cross-sectional view of a camera to which the film cartridge light-shielding door and the film cartridge loading opening opening / closing lid locking mechanism of the present invention are applied.

FIG. 29 is a perspective external view of a film cartridge.

[Explanation of symbols]

 1 Film Cartridge 3 Cartridge Outer Frame 11 Spool 17 Film Ejection / Inlet Opening 19 Light-Shielding Door 19a Shaft 19b Key Groove 21 Hole 30 Camera 31 Spool Chamber 32 Cartridge Chamber 47 Loading Port 50 Open / Close Lid 51 Driver 51b Gear Unit 53 Interlocking Arm 60 Relay Lever 60b fan gear 63 film detection pin 65 interlocking rod 70 tension spring

Claims (4)

[Claims] 1. A cartridge outer frame having a spool therein; a film ejection opening formed in the cartridge outer frame; and a film ejection opening provided rotatably along the film ejection opening. A light-blocking door that opens and closes;
A camera capable of loading a film cartridge provided with: a loading port for loading and unloading a film cartridge;
An opening / closing lid for opening / closing the loading port; an opening / closing lid locking mechanism for manually locking the opening / closing lid; when the opening / closing lid is locked by the opening / closing lid locking mechanism, the light shielding door is opened and the lock is released. A light-blocking door opening / closing mechanism that closes the light-blocking door when detected; a detection means that detects the presence or absence of a film discharged from the film cartridge; and a lock-lock mechanism that cannot operate when the detection means detects a film. A lock mechanism for restricting the opening / closing lid lock mechanism when not detected; 2. The film detecting pin according to claim 1, wherein the detecting means includes a film detecting pin that is movably supported in a direction perpendicular to the film surface, and an end portion facing the film surface is abuttable to the film surface. A lock mechanism for the film cartridge light-shielding door and the film cartridge loading port opening / closing lid; and a biasing unit that constantly biases the film detection pin in the direction in which the film detection pin contacts the film. 3. The regulating means according to claim 2, further comprising an interlocking rod that is connected to the film detecting pin and extends in a direction substantially orthogonal to a moving direction of the film detecting pin. When the film is detected, the lock mechanism for the film cartridge light-shielding door and the film cartridge loading port open / close lid is moved to a position where it interferes with the open / close lid lock mechanism. 4. The regulating means according to claim 2, further comprising an interlocking rod that is connected to the film detecting pin and extends in a direction substantially orthogonal to a moving direction of the film detecting pin. Is moved to a position where it interferes with the light blocking door opening / closing mechanism when it detects a film,
Locking mechanism for the film cartridge light-shielding door and the film cartridge loading port opening / closing lid.