JPH0961929A - Device capable of loading film cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a cartridge FC from undesirably dropping by providing a take-out inhibiting mechanism for inhibiting the taking out of the cartridge from a cartridge chamber, when a device main body is in a fixed attitude. SOLUTION: In a state where the bottom surface of a camera main body is turned upward, a lever 4 keeps the state shown by the figure by the gravity of an overlapped part 4a against the energizing force of a spring 5 and the engagement of the overlapped part 4a with the projection 2b of a moving member 2 is released. Therefore, the moving member 2 can be moved in the releasing direction of a lock by the operation of an operation part 2c, to release the engagement of hook parts 1a and 2a. After that, when the attitude of the camera is changed to turn its bottom surface downward, the position detecting lever 4 is turned by the gravity of the overlapped part 4a and it is engaged with the projection 2b of the moving member 2. Therefore, even if the operation part 2c is operated to move the moving member 2 in the releasing direction of the lock, the moving member 2 can not be moved. Thus, the opening of a cartridge cover 1 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus, such as a camera, into which a film cartridge can be loaded, and more particularly, to prevent undesired dropping of the cartridge.

[0002]

2. Description of the Related Art In an apparatus such as a camera having a cartridge chamber in which a film cartridge is loaded, if the lid of the cartridge chamber (cartridge lid) is inadvertently opened with the cartridge inlet / outlet facing downward, the cartridge Could fall from the cartridge chamber.

It is an object of the present invention to provide an apparatus capable of loading a film cartridge which prevents the cartridge from being dropped undesirably.

[0004]

FIG. 1 shows an embodiment of the present invention.
According to the present invention, the present invention prohibits the cartridge chamber 18 provided in the apparatus main body into which the film cartridge FC is inserted and removed, and the removal of the cartridge FC from the cartridge chamber 18 when the apparatus main body is in a predetermined posture. Ejection prohibition mechanisms 2 and 4 are provided. In this way, the film cartridge FC is prohibited from being taken out when the apparatus main body is in a predetermined posture (for example, a posture facing downward), so that the cartridge FC does not drop undesirably. Claim 2
According to the invention, the take-out prohibition mechanisms 2 and 4 are configured so that the take-out of the cartridge FC is prohibited when the apparatus body is in a posture in which the cartridge FC loaded in the cartridge chamber 18 can drop due to its own weight. According to the third aspect of the present invention, the take-out prohibition mechanism includes the member 4 that moves with a change in the posture of the apparatus body. According to a fourth aspect of the present invention, a part of the film cartridge FC in the cartridge chamber 18 is partially transferred to the cartridge chamber 18 as the cartridge is taken out.
It further comprises ejecting mechanisms 15 and 16 for projecting from. According to the invention of claim 5, the cartridge lid 1 for opening and closing the cartridge chamber 18 is provided, and as the take-out prohibiting mechanism, the cartridge lid opening preventing mechanisms 2 and 4 for preventing the opening of the cartridge lid 1 when the apparatus main body is in a predetermined posture are provided. Used. The invention of claim 6 provides a cartridge lid 1
Further, the cartridge lid opening preventing mechanism is configured to further include an operating member 2c for opening the cartridge, and to prevent the opening operation of the operating member 2c when the apparatus main body is in a predetermined posture.
According to a seventh aspect of the present invention, for example, as shown in FIG. 5, when the apparatus main body is in a predetermined posture, the insertion member 52 that is inserted between the cartridge FC and the cartridge ejection port to inhibit the ejection of the cartridge is the ejection inhibition mechanism. It was installed in. According to the invention of claim 8, when the film 30 is pulled out from the cartridge lid 1 that opens and closes the cartridge chamber 18, and the film FC is pulled out from the loaded cartridge FC, the safety that inhibits the opening of the cartridge lid 1 regardless of the state of the take-out inhibition mechanism is provided. The lock mechanism 200 is further provided.

In the section of the means for solving the above-mentioned problems for explaining the structure of the present invention, the drawings of the embodiments are used for the sake of easy understanding of the present invention. It is not limited to.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a camera will be described with reference to FIGS. FIG. 1 is a cross-sectional view of the camera according to the present embodiment as seen from the side surface, and FIG. 2 is a cross-sectional view taken along the line II-II of FIG. Reference numeral 100 denotes an outer cover forming an outer contour of the camera body, reference numeral 18 denotes a cartridge chamber formed in the camera body, and a film cartridge (hereinafter, simply referred to as a cartridge) FC is provided in the cartridge chamber 18 on a bottom surface side (upper side in the drawing) of the camera. It is axially inserted and removed from the cartridge entrance.

Reference numeral 1 denotes a cartridge lid provided on the bottom surface of the camera body, which pivotally opens and closes the cartridge chamber via a hinge shaft X. The hinge axis X has a flat surface portion at a predetermined position as shown in FIG. 2, and is constantly urged upward by the leaf spring 20. A key portion 1 a (FIG. 1) is provided on the inner surface of the cartridge lid 1 so as to project.

A moving member 2 and a position detecting lever 4 are provided between the cartridge chamber 18 and the side surface of the outer cover 100. The moving member 2 is guided by a guide pin 100a engaged with the elongated hole 2d to be slidable in the left-right direction of FIG. 1 (camera front-back direction), and is always biased rightward in the drawing by a spring 3. The moving member 2 is integrally formed with a key portion 2a engageable with the key portion 1a of the cartridge lid 1 and an operation portion 2c for sliding operation (exposed to the outside of the cover 100), and the spring 3 described above. A projection 2b is supported which is supported at one end thereof. When the moving member 2 is operated to the left in the drawing (hereinafter referred to as the unlocking direction) by the operating portion 2c, the engagement of the key portions 1a and 2a is released. As shown in FIG. 3, the protrusion 2b engages with the weight portion 4a of the position detection lever 4 and blocks the movement of the moving member 2 in the unlocking direction.

The position detecting lever 4 is rotatable about the shaft 4b between the position shown in FIG. 1 and the position shown in FIG. 3, and is constantly urged by the spring 5 in the clockwise direction in FIG. The body of the lever 4 is made of a relatively light material such as synthetic resin, and the weight portion 14a is made of a relatively heavy member such as metal or rubber. Therefore, the position detection lever 4 is rotated by the weight of the weight portion 4a according to the change in the attitude of the camera. Reference numerals 100b and 100c are stoppers for restricting rotation of the lever 4 in each direction, and one stopper 100b also functions as a spring hook for the spring 3.

As shown in FIG. 2, between the cartridge chamber 18 and the back surface of the outer cover 100, there is a safety lock mechanism 200 for prohibiting the opening of the cartridge lid 1 when the film 30 is pulled out from the cartridge FC. , And an eject rod 15 for projecting the cartridge FC from the cartridge chamber 18. The safety lock mechanism 200 includes a film detection lever 11 that rotatably holds the film contact roller 10, an intermediate lever 13 that is engaged with this lever 11, and a safety lock rod 14 that is engaged with the intermediate lever 13. are doing. The film detection lever 11 is biased in the clockwise direction in FIG. 2 by the spring 12, and holds the state of FIG. 4 when the film 30 is not in contact with the film roller 10. Cartridge F
When the film 30 pulled out from C contacts the roller 10, the film detection lever 11 is rotated by the film 30 against the biasing force of the spring 12 to the position shown in FIG.

The protrusion 11a protruding from the lever 11 is
The intermediate lever 13 is engaged with an engagement hole 13a formed at one end thereof, and the other end 13b of the intermediate lever 13 is engageable with an engagement protrusion 14a formed at one end of the safety lock rod 14. The safety lock rod 14 is guided by a guide pin 100c that engages with the long hole 14b thereof to be slidable in the left-right direction (horizontal direction of the camera) in the drawing, and the spring 21.
Always urged to the right by. The stopper portion 14c formed at the other end of the safety lock rod 14 can be inserted into the moving path of the moving member 2 described above, and restricts the movement of the moving member 2 at the time of insertion.

The eject rod 15 is movable in the vertical direction in FIG. 2, and is urged by a spring 16 upward in the drawing (on the bottom side of the camera). A projecting portion 15a that projects into the cartridge chamber 18 is formed at one end of the eject rod 15, and the projecting portion 15a can be engaged with one end surface of the cartridge FC. The protrusion 15a comes into contact with the stopper 18a of the cartridge chamber 6 to restrict the upward movement of the eject rod 15 in the drawing. Also eject rod 15
The other end is a push-opening portion 15b for pushing open the cartridge lid 1. In addition, 17 in FIG. 4 is a cartridge F
The fork portion engages with a C spool shaft (not shown) to feed the film.

Next, the operation will be described. Now, it is assumed that the cartridge FC is not loaded in the cartridge chamber 18 and the cartridge lid 1 is closed. When the bottom surface of the camera body faces upward (FIG. 1), the lever 4 is moved to the weight portion 4a.
The state shown in the drawing is held against the urging force of the spring 5 by its own weight, and the engagement between the weight portion 4a and the protrusion 2b of the moving member 2 is released. On the other hand, since the cartridge FC, that is, the film 30 does not exist, the safety lock mechanism 200 operates in the spring 12
4 by the urging force of, the stopper portion 14c of the safety lock rod 14 is retracted from the moving path of the moving member 2. Therefore, the moving member 2 can be moved in the unlocking direction by the operation of the operation portion 2c, and the engagement of the key portions 1a and 2a can be released. Key part 1a,
When the engagement of 2a is released, the eject rod 15 moves to the spring 1
The cartridge lid 1 is opened by projecting by the urging force of 6. When the hand is released from the operating portion 2c, the moving member 2 returns to the position shown in FIG. 1 by the urging force of the spring 3.

When the cartridge FC is loaded in the cartridge chamber 18, the spool shaft (not shown) of the cartridge FC
Is engaged with the fork member 17. Next, when the cartridge lid 1 is closed, the moving portion 2 is moved to the left in FIG. 1 while the key portion 1a slides on the slope of the key portion 2a, and when the cartridge lid 1 is completely closed, it is moved by the biasing force of the spring 3. The member returns to the right and the key portions 1a and 2a are engaged. At this time, the eject rod 15 is pushed by the cartridge lid 1 that moves in the closing direction and moves to the position shown in FIG.

After that, when the camera posture is changed so that the bottom surface of the camera, that is, the cartridge inlet / outlet is directed downward, the position detecting lever 4 is rotated to the position shown in FIG. 3 by the weight of the weight portion 4a, and the weight portion 4a is projected on the moving member 2. Engage with 2b.
Therefore, even if the operating member 2c is operated to move the moving member 2 in the unlocking direction, the moving member 2 cannot be moved, the opening of the cartridge lid 1 is blocked, and the cartridge FC can be prevented from being undesirably dropped. This effect will be described in detail later.

When the film 30 is delivered from the loaded cartridge FC, the film 30 comes into contact with the roller 10 to rotate the film detection lever 11 counterclockwise against the urging force of the spring 12. Lever 1 in conjunction with
3 rotates clockwise. Due to the rotation of the lever 13, the other end 13b has a protrusion 14a on the safety lock rod 14.
Since it retreats from the safety lock rod 14 spring 21
The stopper portion 14 moves to the right in the drawing by the urging force of
c is inserted into the moving path of the moving member 2. That is, FIG.
State.

At this time, since the movement of the moving member 2 in the unlocking direction is blocked by the stopper portion 14c, even if the weight portion 4a of the position detecting lever 4 and the projection 2b of the moving member 2 are disengaged ( Opening of the cartridge lid 1 is prohibited even in a camera posture in which the cartridge doorway faces upward. In this way, the film 30 is a cartridge FC
Since the opening of the cartridge lid 1 is prohibited in the state that the film is being sent from the cartridge, the cartridge lid 1 is not opened carelessly and the film 30 is not exposed undesirably. FIG.
In this posture, that is, in the normal lateral photographing posture of the camera, the position detection lever 4 is constantly pressed against the stopper 100b by the urging force of the spring 5, so that the position detection lever 4 caused by the vibration is generated.
It is possible to prevent play between the stopper and the stopper 100b.

When the film 30 is completely rewound into the cartridge, the film 30 retracts from the roller 10, so that the biasing force of the spring 12 causes the levers 11 and 13 to rotate in the opposite direction to the above, and the end of the lever 13 is rotated. The portion 13b is the spring 21
The safety lock rod 14 is slid to the position shown in FIG. 4 against the biasing force of. As a result, the stopper portion 14c retracts from the moving path of the moving member 2. However, as shown in FIG. 3, when the bottom surface of the camera, that is, the state where the cartridge inlet / outlet faces downward, the weight portion 4a of the position detection lever 4 is engaged with the protrusion 2b of the moving member 2, and thus the moving member 2 is unlocked. Movement in the direction is still blocked and the cartridge lid 1 cannot be opened.

When the posture of the camera body is changed so that the bottom surface of the camera faces upward in this state, the position detecting lever 4 is rotated against the biasing force of the spring 5 by the weight of the weight portion 4a as shown in FIG. The weight portion 4a and the protrusion 2b of the moving member 2 are disengaged from each other. Therefore, the moving member 2 can be operated in the unlocking direction by operating the operating portion 2c, and the engagement of the key portions 1a and 2a can be released. Here, whether the position detection lever 4 rotates when the camera body is in any of the postures between FIG. 1 and FIG.
It can be appropriately adjusted by the weight of a, the length of the lever 4, the sliding resistance of the rotating shaft of the lever 4, and the like. In the present embodiment, the lever 4 may be configured to rotate from the state of FIG. 1 to the state of FIG. 3 just before the cartridge FC is in the posture in which it can fall from the cartridge chamber 18.

By releasing the engagement of the key portions 1a and 2a, the eject rod 15 is moved upward in FIG. 2 by the urging force of the spring 16 as shown in FIG. 4, and the pushing open portion 15b on one end side pushes the cartridge lid 1. At the same time as the opening, the protrusion 15a moves the cartridge FC upward in the drawing. When the opening angle of the cartridge lid 1 reaches about 45 degrees, the flat portion of the hinge axis X comes into surface contact with the leaf spring 20, and further opening of the cartridge lid 1 is prevented. The eject rod 15 is stopped by the protruding portion 15a coming into contact with the stopper portion 18a of the cartridge chamber 18, but the cartridge FC further rises by inertia, and a part of the cartridge FC protrudes from the cartridge chamber 18 and hits the cartridge lid 1. Contact. This prevents undesired ejection of the cartridge FC. And
Due to the frictional force with the wall of the cartridge chamber, the cartridge FC
Is held in that position. Here, it is assumed that the spring 16 for biasing the eject rod 15 has sufficient force to disengage the spool shaft of the cartridge FC from the fork member 17 and cause the cartridge to project from the cartridge chamber 18.

In order to take out the cartridge FC, the cartridge lid 1 can be opened further by hand against the biasing force of the leaf spring 20, and the cartridge FC partially protruding from the cartridge chamber 18 can be pulled out.

By the way, in the one having the eject mechanism as described above, if the lock of the cartridge lid 1 is released in the camera posture in which the cartridge inlet / outlet faces downward,
For the operating force of the eject rod 15 (spring force of the spring 16),
Since the ejecting rod 15 and the weight of the cartridge 18 are added and the ejecting force of the cartridge becomes excessively large, even if the cartridge lid 1 has a mechanism for preventing the ejecting of the cartridge FC, the ejecting (falling) of the cartridge FC occurs.
May not be blocked. In the present embodiment, unlocking or opening of the cartridge lid is prohibited in the camera posture in which the cartridge inlet / outlet faces downward. Therefore, even if the cartridge has an eject mechanism, the cartridge FC can be reliably prevented from falling.

In the above structure, the moving member 2 and the position detection lever 4 function as an eject prohibiting mechanism for the eject rod 15.
The spring 16 and the spring 16 form an eject mechanism.

FIG. 5 shows another embodiment of the present invention, in which components having the same functions as those in FIGS. 1 to 4 are designated by the same reference numerals. In FIG. 5A, reference numeral 51 denotes a cartridge drop prevention member that is movable in the left-right direction in the drawing (horizontal direction in the camera), and is biased to the left side in the drawing by a spring 52.
Reference numeral 53 is a weight that can move in the vertical direction of the camera, and the spring 5
4 is urged upward in the figure (on the bottom side of the camera).
In the present embodiment, the position detection lever 4 as shown in FIG. 1 is not provided, and therefore the cartridge lid 1 can be opened regardless of the posture of the camera body. Other configurations are similar to those of the previous embodiment.

In the above structure, when the cartridge inlet / outlet of the cartridge chamber 18 is directed upward as shown in FIG. 5 (a), the weight 53 is retracted below the fall prevention member 51 by its own weight to prevent the fall. One end of the member 51 is retracted from between the cartridge FC and the cartridge lid 1. Therefore, when the lock of the cartridge lid 1 is released by the operation member, the cartridge lid 1 is opened by the eject mechanism as described above, and at the same time, a part of the cartridge FC projects from the inlet / outlet, and the cartridge FC can be taken out. On the other hand, as shown in FIG. 5B, when the cartridge inlet / outlet is oriented downward, the weight 5
3 moves downward in the figure (camera bottom side) by its own weight and presses the slope on the other end side of the fall prevention member 51. As a result, the fall prevention member 51 moves laterally and one end thereof is inserted between the cartridge FC and the cartridge lid 1. When the lock of the cartridge lid 1 is released in this state, the ejecting mechanism drives the cartridge FC in the take-out direction, but the cartridge FC is not blocked by the fall prevention member 51 and does not project from the cartridge entrance / exit. Therefore,
Even if the cartridge lid 1 is open, the cartridge FC does not drop.

The present invention can also be applied to the case where the cartridge inlet / outlet is provided on the upper surface of the camera. Further, the configurations of the cartridge removal prohibiting mechanism and the safety lock mechanism are not limited to those described above. Furthermore, although a camera has been described above, the present invention can be similarly applied to a device other than a camera in which a film cartridge can be loaded, such as a device for displaying a filmed image of a film on a TV screen or the like.

[0027]

According to the present invention, the taking out of the film cartridge is prohibited when the main body of the apparatus is in a predetermined posture, so that the undesired dropping of the cartridge can be prevented. In particular, in a device provided with an eject mechanism that causes a part of the film cartridge to project from the cartridge chamber when the cartridge is taken out, the cartridge is likely to drop, so that the effect of applying the present invention is great. Also,
In the case where the cartridge inlet / outlet is provided on the bottom surface of the apparatus main body, the cartridge inlet / outlet often faces downward, so that the effect of the present invention is great in this case as well. If the opening of the cartridge lid is prohibited when the apparatus main body is in the predetermined posture, the cartridge lid can be prevented from being accidentally opened and the cartridge can be prevented from dropping. If the member is inserted between the cartridge and the ejection port when the apparatus main body is in a predetermined posture, the cartridge can be prevented from falling even if the cartridge lid is accidentally opened. If a member that moves according to a change in the posture of the apparatus main body is used as a component of the cartridge removal prohibition mechanism, the cartridge drop prevention function can be achieved with a simple configuration. When the film is pulled out from the loaded cartridge, undesired exposure of the film can be prevented by prohibiting the removal of the cartridge even when the apparatus main body is in a posture other than the predetermined posture.

[Brief description of drawings]

FIG. 1 is a side sectional view of a camera according to an embodiment of the present invention, showing a posture in which a cartridge inlet / outlet faces upward.

FIG. 2 is a sectional view taken along line II-II in FIG. 1, showing a state when the cartridge lid is closed.

FIG. 3 is a view similar to FIG. 1, showing a posture in which the cartridge inlet / outlet faces downward.

FIG. 4 is a view similar to FIG. 2, showing a state when the cartridge lid is opened.

FIG. 5 is a sectional view of a main part of a camera according to another embodiment.

[Explanation of symbols]

 1 Cartridge Lid 2 Moving Member 3, 5, 12, 16, 21 Spring 4 Position Detection Lever 10 Roller 11, 13 Lever 14 Safety Lock Rod 15 Eject Rod 18 Cartridge Chamber 30 Film 100 Outer Cover 200 Safety Lock Mechanism FC Film Cartridge X Hinge axis

Claims (8)

[Claims] 1. A cartridge chamber provided in the apparatus main body, into which a film cartridge is inserted and removed, and a take-out prohibiting mechanism for prohibiting taking out of the cartridge from the cartridge chamber when the apparatus main body is in a predetermined posture. A device that can be loaded with a film cartridge. 2. The take-out prohibiting mechanism prohibits taking-out of the cartridge when the apparatus main body is in a posture in which the cartridge loaded in the cartridge chamber can drop due to its own weight. An apparatus which can be loaded with the film cartridge according to item 1. 3. The apparatus according to claim 1, wherein the take-out prohibiting mechanism includes a member that moves with a change in the posture of the apparatus body. 4. The film cartridge according to claim 1, further comprising an eject mechanism for causing a part of the film cartridge in the cartridge chamber to protrude from the cartridge chamber when the cartridge is taken out. A device that can be loaded. 5. A cartridge lid opening and closing mechanism for blocking the opening of the cartridge lid when the apparatus body is in the predetermined posture, comprising a cartridge lid for opening and closing the cartridge chamber. An apparatus which can be loaded with the film cartridge according to any one of claims 1 to 4. 6. The cartridge lid opening blocking mechanism further comprises an operating member for opening the cartridge lid.
The apparatus according to claim 5, wherein the opening operation of the operation member is blocked when the apparatus main body is in the predetermined posture. 7. The ejection prohibiting mechanism includes an insertion member that is inserted between the cartridge and the cartridge ejection port to prohibit ejection of the cartridge when the apparatus main body is in the predetermined posture. An apparatus in which the film cartridge according to any one of Items 1 to 4 can be loaded. 8. A cartridge lid that opens and closes the cartridge chamber, and a safety lock mechanism that inhibits opening of the cartridge lid regardless of the state of the take-out inhibition mechanism when a film is pulled out from the loaded cartridge. The method according to claim 1, further comprising:
An apparatus capable of loading the film cartridge according to any one of 7).