JPH07281289A - Camera - Google Patents

Abstract

PURPOSE:To provide an unloading mechanism surely actuated even if it is repeatedly used and less requiring an installation space, in a camera used in such a manner that a film cartridge is loaded in the axial direction of a spool. CONSTITUTION:A lifting member 25 moved along the loading direction of the film cartridge 10 is disposed in a housing chamber 22 and a turning arm 28 is turnably supported on the top end part of the lifting member 25. The turning arm 28 has the habit of returning to a reference position by a tension spring 29 and a stopper 30. An engaging member 31 is fixedly provided on the rear of a bottom cover 24 and engaged with the turning arm 28 to lift the lifting member 25, at the time of opening the bottom cover 24. When it is further opened, the engagement is released and the lifting member 25 is lowered. At the time of closing the bottom cover 24, the engaging member 31 rides across the turning arm 28 while turning it counterclockwise, to be engaged with the turning arm 28 again.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera, and more particularly to a camera in which a film cartridge is loaded in an axial direction of a spool in a storage chamber opened and closed by a light-shielding lid rotatably supported on the camera body. Relates to the improvement of the mechanism for taking out the film cartridge loaded in the storage chamber.

[0002]

2. Description of the Related Art In a camera of this type, that is, a camera in which a film cartridge is loaded in the accommodation chamber in the axial direction of the spool, the film cartridge loaded in the accommodation chamber is difficult to remove, so that the film cartridge can be easily removed. It is preferable to provide an ejection mechanism for Japanese Unexamined Patent Application Publication No. 4-1624 proposes a camera equipped with such an extraction mechanism.

This take-out mechanism is constructed as follows. That is, a member that moves from the inside to the outside of the storage chamber and lifts the film cartridge to a position where the film cartridge can be taken out during this movement (hereinafter, such a member is referred to as a "lift member") is provided. Further, a lid for opening and closing the storage chamber (hereinafter referred to as "light-shielding lid") is provided with an engaging member that engages with the lift member and moves the lift member outward when the light-shielding lid is opened. When the user of the camera opens the light shielding cover, the film cartridge is moved to a position where it can be taken out by the lift member in conjunction with the opening operation of the light shielding cover.

Since it is an obstacle if the lift member projects outside the storage chamber even after the film cartridge is taken out,
It is preferable that the lift member is configured to move to the outside of the storage chamber and then return to the storage chamber again. In the above take-out mechanism,
When the opening amount of the light shielding lid is increased, the lift member is flexibly deformed in the width direction of the camera, whereby the engagement member and the lift member are disengaged, and the lift member is configured to drop toward the accommodation chamber by its own weight. There is. Further, in this take-out mechanism, when the light-shielding lid is closed, the lift member is pressed by the engagement member and flexibly deforms in the front-rear direction of the camera, whereby the engagement member and the lift member are reengaged. There is.

[0005]

In this take-out mechanism, since the lift member is flexibly deformed to engage and disengage with the engaging member, if the engaging and disengaging with the engaging member is repeated, The elasticity of the flexurally deformed portion is impaired, and the lift member and the engaging member cannot be engaged or disengaged, which may cause the take-out mechanism to not operate reliably. In addition, since the space for the lift member to bend and deform in the front-rear direction of the camera must be provided in the accommodation chamber, there is also a problem that the camera becomes large accordingly.

Further, in this take-out mechanism, when the lift member and the engaging member are disengaged and the lift member falls into the accommodation chamber, the film cartridge falls into the accommodation chamber again together with the lift member. Has been done.
Therefore, it is necessary to take out the film cartridge before the lift member and the engaging member are disengaged from each other while paying attention to the opening amount of the light shielding lid. There is also the problem of not having it.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a camera provided with a take-out mechanism that operates reliably even if it is repeatedly used and does not require much installation space. .

Another object of the present invention is to provide a camera having a take-out mechanism which operates reliably even if it is repeatedly used, requires a small installation space, and can take out a film cartridge very easily. To do.

[0009]

In order to achieve the above object, the camera of the present invention is provided so as to be movable between the inside and the outside of the storage chamber along the loading direction of the film cartridge in the storage chamber. A lift member that engages with a film cartridge in the storage chamber when moving toward the outside of the storage chamber and moves the film cartridge to the outside of the storage chamber, and a lift member rotatably supported by the lift member and a reference position. And a turning member that has a habit of returning to the accommodation chamber and is limited in rotation in a direction in which the engaging portion moves to the outside of the accommodation chamber, and the outside of the accommodation chamber provided on the back surface of the light shielding lid. When moving toward one side, the lift member is moved to the outside of the storage chamber by engaging the engaging portion of the rotating member from the inside of the storage chamber, and the engagement is released by the further opening operation, and the lift member is moved to the inside of the storage chamber. Allow to return to In both cases, when the light shielding lid is moved inward of the storage chamber due to the closing operation, the rotary member of the lift member, which has returned to the storage chamber, comes into contact with the engagement portion from the outside of the storage chamber, and the engagement portion. Is disengaged from the engaging portion after being rotated and pushed away toward the accommodation chamber, and the rotating member is allowed to return to the reference position.

Further, in order to achieve the above-mentioned other object, another camera of the present invention, together with the above-mentioned constitution, projects into the accommodation chamber on the inner side of the accommodation chamber of the film cartridge moved to the outside of the accommodation chamber, It is characterized in that a re-drop prevention member for preventing the film cartridge from re-dropping after the lift member has returned to the inside of the storage chamber is provided.

The returning behavior of the rotating member is as follows.
A stopper provided on the lift member so as to prevent rotation of the engaging portion of the rotating member from the reference position toward the outside of the storage chamber, and a biasing member for biasing the rotating member toward the stopper. Can be given by.

In this case, this urging member can be a tension spring as follows. That is, one end of the lift member is locked to a portion of the rotation member opposite to the engaging portion with the rotation shaft of the rotation member interposed therebetween, and the other end is locked to a part of the camera body. A tension spring that biases the member toward the accommodation chamber can be used.

[0013]

In the camera of the present invention, the rotating member pivotally supported by the lift member is rotated to engage and disengage the rotating member and the engaging member. The engagement and disengagement of the member and the engaging member is performed. Unlike the prior art in which the lift member is configured to flex and deform when being disengaged from the engaging member, even if the engaging and disengaging the rotating member and the engaging member are repeated, Can be engaged and disengaged. Therefore, the film cartridge can be reliably taken out of the storage chamber even if it is repeatedly used.

Further, unlike the prior art, it is not necessary to secure a space for the lift member to be flexibly deformed, so that the space can be saved and the camera can be downsized.

According to the camera of the present invention equipped with the re-drop prevention member, even if the lift member moves the film cartridge outside the storage chamber and then returns to the inside again, the re-drop prevention member enters the storage chamber. Since the film cartridge is configured to project so as to prevent the film cartridge from falling, it is not necessary for the camera user to panic when the film cartridge is moved to a position where it can be taken out, so that the film cartridge can be taken out very easily.

If the habit of returning the rotating member to the reference position is given by the stopper and the biasing member such as the spring, the take-out mechanism can be simplified and the manufacturing cost can be reduced.

Further, if the biasing member is the tension spring as described above, the lift member can be surely returned to the inside of the storage chamber. Further, since the member for urging the lift member to the inside of the accommodation chamber and the member for giving the habit of returning to the rotating member are also used, the number of parts can be reduced as compared with the case where these members are provided separately, which makes it possible to reduce the number of parts. The manufacturing cost can be further reduced.

[0018]

Embodiments of the camera of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is an external perspective view showing an example of a film cartridge used in the camera of the present invention, and FIG. 2 is a horizontal sectional view showing the internal structure of the film cartridge shown in FIG. 1. FIG. (B) in the state where is closed
Shows the state where the light shielding door is open.

As shown, the film cartridge 10 is
A cartridge main body 11 and a spool 12 extending in the main body 11 in the axial direction of the film cartridge 10 (vertical direction in FIG. 1) and rotatably supported by the main body 11 are provided.
It has a built-in film 13 wound around it. A slit-shaped film drawing opening 14 extending in the axial direction of the film cartridge 10 is formed on the side surface 11a of the cartridge main body 11, and the film drawing opening is provided inside the cartridge main body 11.
A light shielding door 15 that shields and opens 14 is rotatably supported.

FIG. 3 is a perspective view of a camera according to an embodiment of the present invention viewed from the bottom side and the back side. Illustrated camera
Reference numeral 20 includes a housing chamber 22 that extends inside the camera body 21 in the vertical direction of the camera 20, and a loading port 23 formed on the bottom surface of the camera body 21 for loading the film cartridge 10 into the housing chamber 22. Further, a bottom lid 24 as a light-shielding lid for opening and closing the accommodation chamber 22 is rotatably supported on the camera body 21. The film cartridge 10 is loaded from the loading port 23 to the accommodation chamber 22.
It is loaded inside along the axial direction of the spool 12.

FIG. 4 is a perspective view showing the structure of the film cartridge take-out mechanism of the camera shown in FIG. 3, showing a state in which the film cartridge is moved to the outside of the accommodation chamber 22.

As shown in the drawing, the accommodating chamber 22 has a plate-shaped base portion 25a extending in the loading direction of the film cartridge 10 and a base portion.
A lift member 25 including a bent claw portion 25b is arranged at the lower end of the 25a. A guide groove 26 extending in the vertical direction is formed in the base portion 25a, and two guide pins 27 projecting on the camera body 21 side are inserted into the guide groove 26. With this guide groove 26 and guide pin 27,
The lift member 25 is configured so as to be movable between the inside and the outside of the storage chamber 22 along the loading direction of the film cartridge 10, and when moving from the inside to the outside of the storage chamber 22, the lift member 25 is provided. The portion 25b is engaged with the bottom surface of the film cartridge 10 to move the film cartridge 10 to a position where it can be taken out.

At the upper end of the base portion 25a of the lift member 25, a rotating arm 28 as a rotating member is supported so as to be rotatable around a rotating shaft 28a. The rotating arm 28 includes an engaging portion 28b extending from the rotating shaft 28a to the left side in the drawing, and a fastening portion 28c extending from the rotating shaft 28a to the right side in the drawing. One end of a tension spring 29, the other end of which is fastened to the camera body 21 side, is fastened to the end of the fastening part 28c, and the turning arm 28 is always turned clockwise by the tension spring 29. It is energized. The lift member 25 is constantly urged by the tension spring 29 toward the inside of the accommodation chamber 22.

The rotating arm 28 of the base portion 25a of the lift member 25
A bent stopper 30 is provided at a portion immediately below the fastening portion 28c to prevent the turning arm 28 from turning clockwise from the illustrated state. As shown in FIG. 4, when the lower end of the fastening portion 28c of the rotating arm 28 is in contact with the stopper 30 by the urging force of the tension spring 29, the reference position of the rotating arm 28 is used. The arm 28 is provided with a habit of returning to the reference position by a tension spring 29 and a stopper 30.

A substantially triangular plate 31 is provided on the back surface of the bottom lid 24.
An engaging member 31 composed of a and an engaging pin 31b protruding from the plate 31a is fixed. As will be described later, the engaging member 31 is configured to engage the rotating arm 28 and move the lift member 25 to the outside of the housing chamber 22 when the bottom cover 24 is opened.

A support arm 32 as a receding prevention member is rotatably supported on the camera body 22 side inside the accommodation chamber 22. A torsion spring 33 is attached to the support arm 32, and the torsion spring 33 constantly urges the support arm 32 to rotate clockwise. As will be described later, the support arm 32 is configured to project into the storage chamber 22 when the film cartridge 10 moves to the outside of the storage chamber 22 and prevent the film cartridge 10 from falling again.

Next, the operation of the take-out mechanism having the above construction will be described. First, a case of taking out the loaded film cartridge 10 will be described with reference to FIGS.

In FIG. 5, the film cartridge 10 is a storage chamber.
It is shown loaded to 22 and the bottom lid 24 closed. At this time, the lift member 25 and the rotating arm 26 are integrally pulled toward the inside of the storage chamber 22 by the urging force of the tension spring 29. Further, the support arm 22 rotates clockwise by the urging force of the torsion spring 33 and tries to project into the accommodation chamber 22, but it comes into contact with the outer wall of the loaded film cartridge 10 and prevents further rotation. Has been done.

FIG. 6 shows the opening operation of the bottom cover 24 after the lock (not shown) of the bottom cover 24 is released. When the bottom lid 24 is opened, the engagement pin 31b of the engagement member 31 that moves outward of the accommodation chamber 22 in accordance with this opening operation causes the engagement portion 31 of the rotation arm 28 to move.
28b is engaged from the inside of the accommodation chamber 22. After the engagement, when the bottom lid 24 is gradually opened, the engagement pin 31b moves to the rotation arm 28.
However, since the rotation arm 28 is prevented from rotating in the clockwise direction by the stopper 30, the rotation arm 28 remains in the reference position and the engagement pin 28 is rotated.
It is lifted up integrally with the lift member 25 by 31b. At this time, the film cartridge 10 is simultaneously lifted by the claw portions 25b of the lift member 25. Although the engaging pin 31b makes a rotational movement about the pivot axis of the bottom lid 24, the engaging pin 31b makes a sliding movement to the left in the figure while slidingly contacting the lower end of the engaging portion 28b with respect to the pivot arm 28. is doing.

FIG. 7 shows a state immediately before the engagement pin 31b is disengaged from the engagement portion 28b of the rotary arm 28, that is, the lift member 25 is raised to the uppermost point. When the film cartridge 10 rises to this state, the support arm 32, which has been prevented from rotating by the outer wall of the film cartridge 10 until then, rotates to the position shown by the biasing force of the torsion spring 33 and projects into the accommodation chamber 22. To do. However, the pin 34 is provided on the camera body 21 side so as not to rotate further.

When the bottom lid 24 is further opened further than this, as shown in FIG. 8, the engaging pin 31b and the engaging portion 28 of the rotating arm 28 are shown.
The engagement with b is released. When the engagement is released, the rotating arm 28 and the lift member 25 are lowered to their original positions by the urging force of the tension spring 29. On the other hand, the film cartridge 10 has a support arm that projects into the accommodation chamber 22 even if the lift member 25 descends.
It is supported by 32 and is prevented from falling again. in this way,
The amount of force of the torsion spring 33 that urges the support arm 32 to rotate is set to such an extent that the weight of the film cartridge 10 can be supported. In this state, the upper end of the film cartridge 10 projects to the outside of the accommodation chamber 22, so that the camera user can take out the film cartridge 10 from the accommodation chamber 22 very easily without panic.

Next, the case where the film cartridge 10 is loaded and the bottom lid 24 is closed will be described with reference to FIGS. 9 to 12. FIG. 9 shows the film cartridge 10 being loaded. Film cartridge 10 when loading
Although it is inserted from the loading port 23, the film cartridge 10 does not enter the inside of the accommodation chamber 22 because the support arm 32 projects into the accommodation chamber 22 by merely inserting it. However, as described above, the force of the torsion spring 33 depends on the film cartridge 10.
Since it is weak enough to support the weight of the film cartridge 10, the film cartridge 10 can easily enter the interior of the accommodation chamber 22 if the upper end of the film cartridge 10 is lightly pushed.

After pushing in the film cartridge 10,
As shown in FIG. 10, when the bottom lid 24 is closed, the engagement pin 31b of the engagement member 31 which moves from the outside to the inside of the accommodation chamber 22 in accordance with this closing operation causes the engagement pin 31b of the rotation arm 28 to move. The slanted upper end of the joining portion 28b abuts from the outside of the accommodation chamber 22.

When the bottom lid 24 is further closed, as shown in FIG. 11, the rotating arm 28 whose pressing portion 28b is pressed by the engaging pin 31b is rotated while resisting the urging force of the tension spring 29. It rotates counterclockwise about the shaft 28a, which causes the engaging portion
28b moves inward of the accommodation chamber 22.

As the bottom cover 24 is further closed, as shown in FIG. 12, the engaging pin 31b moves to the outside of the rotating area of the engaging portion 28b of the rotating arm 28, so that the engaging pin 31b is rotated together with the engaging pin 31b. Arm 28
Is disengaged from the engaging portion 28b. When the engagement is released, the rotating arm 28 is rotated clockwise by the urging force of the tension spring 29, and the stopper 30 is prevented from rotating more than a predetermined amount, thereby returning to the reference position. When the bottom lid 24 is then completely closed, the bottom lid 24 is locked and held in the closed position, which completes the loading operation.

The embodiment in which the present invention is applied to a camera using a new type film cartridge having a film drawing opening which is opened and closed by a light-shielding door has been described above. The present invention uses such a film cartridge. The invention is not limited to the camera, but can be applied to various cameras in which the film cartridge is loaded in the axial direction of the spool for use.

[Brief description of drawings]

FIG. 1 is a view showing an example of a film cartridge used by a camera of the present invention.

FIG. 2 is a horizontal sectional view showing the outline of the internal structure of the film cartridge shown in FIG.

FIG. 3 is an external perspective view of a camera according to an embodiment of the present invention.

FIG. 4 is a perspective view showing an extraction mechanism of the camera shown in FIG.

FIG. 5 is a view showing an operation of taking out a loaded film cartridge.

FIG. 6 is a view showing an operation of taking out a loaded film cartridge.

FIG. 7 is a view showing an operation of taking out a loaded film cartridge.

FIG. 8 is a view showing an operation of taking out a loaded film cartridge.

FIG. 9 is a view showing an operation of loading a film cartridge.

FIG. 10 is a view showing an operation of loading a film cartridge.

FIG. 11 is a view showing an operation of loading a film cartridge.

FIG. 12 is a view showing an operation of loading a film cartridge.

[Explanation of symbols]

 10 Film Cartridge 11 Cartridge Body 12 Spool 13 Film 14 Film Drawout Opening 15 Light-shielding Door 20 Camera 21 Camera Body 22 Storage Room 23 Loading Port 24 Bottom Lid 25 Lifting Member 25a Base 25b Claw 26 Guide Groove 27 Guide Pin 28 Rotating Arm 28a Rotating shaft 28b Engagement part 28c Fastening part 29 Tension spring 30 Stopper 31 Engagement member 31a Plate 31b Engagement pin 32 Support arm 33 Torsion spring 34 pin

Claims (4)

[Claims] 1. A camera in which a film cartridge is loaded in an axial direction of a spool in a storage chamber that is opened and closed by a light-shielding lid rotatably supported by a camera body, and the film cartridge is loaded in the storage chamber. The film cartridge is provided so as to be movable between the inside and the outside of the containing chamber along a direction, and engages with the film cartridge in the containing chamber when moving toward the outside of the containing chamber. A lift member for moving the outside of the storage chamber, and a lift member rotatably supported by the lift member, which has a tendency to return to a reference position, and has a restricted rotation in a direction in which the engaging portion moves outside the storage chamber. Is provided on the back surface of the light shielding lid, and is housed in the engaging portion of the rotating member when moving toward the outside of the housing chamber with the opening operation of the light shielding lid. Indoors Are engaged to move the lift member to the outside of the storage chamber, the engagement is released by a further opening operation, and the lift member is allowed to return to the inside of the storage chamber. When moving toward the inside of the storage chamber, the engaging portion of the rotating member of the lift member that has returned to the inside of the storage chamber comes into contact with the outside of the storage chamber to rotate the engagement portion toward the inside of the storage chamber. The camera is further provided with an engaging member which is disengaged from the engaging portion after being pushed away and is allowed to return to the reference position. 2. The film cartridge after the lift member has returned to the inside of the storage chamber on the inner side of the storage chamber of the film cartridge moved to the outside of the storage chamber and protruding into the storage chamber. The camera according to claim 1, further comprising a re-drop prevention member for preventing the re-drop. 3. The lift member is provided with a habit of returning to the lift member so as to prevent the pivot member from pivoting in a direction in which the engaging portion moves outward from the reference position. 3. The camera according to claim 1, wherein the camera is provided by a stopper and a biasing member that biases the rotating member toward the stopper. 4. The urging member has one end locked to a portion of the rotating member opposite to the engaging portion with the rotating shaft of the rotating member interposed therebetween, and the other end thereof to the camera body. 4. The camera according to claim 3, wherein the tension member is a tension spring that is locked to a part of the urging member and urges the lift member toward the accommodation chamber.