JPH0798478A - Camera - Google Patents

Abstract

PURPOSE:To provide a camera which is constituted so that a film cartridge is easily taken out from a camera main body, is inexpensive and requires small space. CONSTITUTION:This camera is provided with a film cartridge housing chamber 5 housing a film cartridge 1 incorporating film wound round a take-up shaft, an R fork 2 projected to the inside of the housing chamber 5 and provided to be freely moved in an axial direction between a position where it is engaged with the take-up shaft of the cartridge 1 and a position where it is retreated therefrom, a cover member 3 forming, for example, the lower surface side of the housing chamber 5 and turned with respect to the camera main body to move the R fork 2 in the axial direction, and a restoring spring 4 energizing the cover member 3 with the R fork 2 in the axial direction. By pressing the cartridge 1 so that the cover member 3 may be turned, the R fork 2 is retreated in the axial direction and then the cartridge 1 is easily taken out.

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 removably housed in a film cartridge housing chamber of a camera body.

[0002]

2. Description of the Related Art As a camera having an eject mechanism for removing a film cartridge from a cartridge accommodating chamber, Japanese Patent Laid-Open No. 3-296029 discloses a cartridge ejecting means which operates in conjunction with opening / closing operation of a lid of the cartridge accommodating chamber. ing. According to the technical means described in the publication, when the film cartridge is inserted into the accommodation chamber, the cartridge enters the accommodation chamber earlier than the closing operation of the lid member, so that the closing operation of the lid member can be smoothly performed. Has become.

Further, Japanese Patent Application Laid-Open No. 4-80735 discloses that
A cartridge storage room that is movable with respect to the camera body,
And a take-up shaft drive member for driving the take-up shaft of the cartridge, which is retractable from the cartridge storage chamber before the movement of the cartridge storage chamber. A camera is described which moves the cartridge storage chamber with respect to the camera body while leaving it in the camera body, whereby the moving volume is reduced and light shielding is simplified.

Further, Japanese Utility Model Publication No. 52-23010 discloses a camera of a type in which a cartridge storage chamber does not move, in which a fork is moved up and down.

[0005]

However, in the one disclosed in the above-mentioned Japanese Patent Laid-Open No. 3-296029, since the injection mechanism is moved in conjunction with the opening / closing operation of the lid, the gear train for interlocking, etc. Many are required, and the mechanism becomes complicated. Also, in order to be able to inject a film cartridge without increasing the force required to open and close the lid, it is necessary to reduce the force required to push out the cartridge as much as possible. It has to move smoothly without much friction force and the like, and when the lid is arranged on the lower surface of the camera, there is a possibility of dropping the cartridge by the opening operation of the lid. For this reason, the lid must be placed on the upper surface of the camera, which not only imposes a restriction on the layout of each part of the camera, but also is not preferable in appearance.

Further, in the above-mentioned Japanese Patent Laid-Open No. 4-80735, a drive source such as a motor for moving the winding shaft is additionally required, which makes the mechanism complicated and expensive.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an inexpensive and small-space camera in which a film cartridge can be easily taken out from the camera body.

[0008]

In order to achieve the above object, a camera according to the present invention comprises a film cartridge storage chamber for storing a film cartridge containing a film wound around a winding shaft, and a storage chamber for the film cartridge. Forming a part of the film cartridge accommodating chamber, and a drive member that is provided so as to be movable in the axial direction between a position that engages with the winding shaft of the film cartridge and a position that retracts from this A lid member that moves the drive member along the axial direction by being rotated with respect to the camera body.

[0009]

The film cartridge accommodating chamber accommodates the film cartridge containing the film wound around the take-up shaft, and the drive member projects into the accommodating chamber and engages with the take-up shaft of the film cartridge. The drive member is moved in the axial direction by freely moving in the axial direction between the retracted position and the lid member forming a part of the film cartridge storage chamber being rotated with respect to the camera body. To move.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention.

When the rear lid of the camera 11 is opened, a cartridge storage chamber 5 is provided on the left side of the aperture 12, for example, as shown in FIG. A film cartridge 1 is loaded in the cartridge storage chamber 5, and an upper end portion 1a thereof is slightly exposed so that the photographer's finger or the like can contact it.

The details of the cartridge storage chamber 5 are shown in FIG.
Will be described with reference to. A lid member 3 that supports the lower end surface of the film cartridge 1 is disposed on the lower surface side of the cartridge storage chamber 5, and is rotated around a lid rotation shaft 3a provided at the end of the lid member 3. It is configured to be possible.

The lid member 3 is made of, for example, a substantially disk-shaped plate member, and a fork hole 3b is formed in the substantially central portion thereof. Through the fork hole 3b, the R fork 2, which is a drive member engageable with the film winding shaft of the film cartridge 1, can be inserted into and taken out of the film cartridge storage chamber 5. As described above, the R fork 2 has an engaging portion for engaging with the film cartridge 1, and an R fork gear 2a is integrally provided on the lower portion coaxially with the engaging portion.

A return spring 4 is provided on the lower end surface side of the R fork 2 and urges the R fork 2 in a direction to engage with the film cartridge 1.

The R fork gear 2a meshes with a gear train 9 provided on the camera body, whereby the R fork gear 2a is rotated.
The fork 2 is adapted to be given a rotational force from a drive source such as a motor (not shown).

Next, with reference to FIG. 2, the operation of inserting and removing the film cartridge 1 will be described. When the rear lid (not shown) is opened after shooting is finished, the film cartridge 1 is removed from the upper wall of the cartridge storage chamber 5 of the camera 11.
The upper end 1a of the is slightly exposed (see FIG. 3),
This part is pushed in the direction of arrow F in FIG. 2 with a finger or the like.

Then, the film cartridge 1 pushes down the R fork 2 biased by the return spring 4 together with the lid member 3.

The R fork 2 is disengaged from the gear train 9, and the film cartridge 1 is further pushed to a position indicated by reference numeral 1 ', so that the lid member 3 is rotated by the lid rotating shaft 3a.
It rotates to the position shown by the code | symbol 3'around. At this time R
The fork 2 includes a lower end surface of the lid member 3 and the R fork gear 2
By engaging with the edge of the peripheral edge of the upper end surface of a, it moves to a position retracted from the upper end surface of the lid member 3 as shown by reference numeral 2'and retracts.

In this state, the film cartridge 1 can be easily pulled out. That is, when the R fork 2 is protruding, it is difficult to take out the film cartridge 1 due to catching on the film winding shaft of the film cartridge 1, but in the present embodiment, as described above, the film cartridge 1 The R fork 2 is retracted by skillfully utilizing the force of pushing the cartridge 1 to take out the cartridge 1. Therefore, the cartridge 1 can be smoothly taken out without using a special drive mechanism. .

When the film cartridge 1 is inserted, the side engaging with the R fork 2 is inserted downward and pressed in the direction of arrow F in FIG. And the R fork 2 is retracted to a position retracted from the upper end surface of the lid member 3 and the upper end side of the film cartridge 1 is sufficiently inserted, and then the pressing force indicated by the arrow F is removed. Then, the lid member 3 is returned to the original position by the urging force of the return spring 4, and the R fork 2 is engaged with the film winding shaft of the film cartridge 1. afterwards,
Upon receiving a signal such as an operation of closing the rear lid, a control means (not shown) feeds the film or the like.

According to the first embodiment as described above, the winding shaft driving member can be retracted from the cartridge accommodating chamber when the film cartridge is inserted and removed with a simple and inexpensive structure, so that the film cartridge can be attached and detached in a small space. The mechanism can be realized, and the camera can be downsized.

Next, FIG. 4 shows a second embodiment of the present invention. In the second embodiment, description of the same parts as those of the first embodiment described above will be omitted, and mainly different points will be described. An arm 3c is projected downward from the lid rotation shaft 3a integrally with the lid member 3. A locking claw 6 is provided at a position where it can be engaged with the arm 3c. The locking claw 6 is a lever member having two substantially vertically protruding arms that are configured to be rotatable around a shaft 6c, and the arm on the side facing the lid member 3 has a claw portion 6a. The other arm is provided as an engaging portion 6b with a release lever 8 which will be described later. The locking claw 6 is biased in a direction in which the lid member 3 is locked by a locking spring 7 having one end engaged with a pin 7a protruding from the camera body.

The release lever 8 is a lever member which is rotatable around a rotary shaft 8c, and the lower arm 8a is adapted to engage with the engaging portion 6b of the locking claw 6, and
A pressing end portion 8b is provided at a position where the upper end portion can come into contact with the upper end portion of the peripheral surface of the film cartridge 1.

Next, the operation of the second embodiment will be described. First, the case where the film cartridge 1 is taken out will be described. When the film cartridge 1 is stored in the cartridge storage chamber 5, the arm 3c of the lid member 3 and the claw portion 6a of the locking claw 6 are not engaged with each other. When the film cartridge 1 is pushed with a finger, the lid member 3 rotates clockwise in FIG. 4, and at the same time, the R fork 2 also descends downward. When the R fork 2 is completely retracted with respect to the lid member 3, the arm 3c rides on and engages with the claw portion 6a of the locking claw 6, so that the lid member 3 does not need to apply a finger force. The film cartridge 1 can be easily taken out while being held in the lowered state.

Next, when the film cartridge 1 is loaded, when the film cartridge 1 is inserted into the cartridge storage chamber 5 and pushed all the way in, the pressing end 8b of the release lever 8 is pushed and the arm of the release lever 8 is pushed. 8a rotates counterclockwise in FIG. 4 and pushes the engaging portion 6b of the locking claw 6 to release the locking of the lid member 3. Then, the lid member 3 and the R fork 2 are both raised by the urging force of the return spring 4, the R fork 2 comes into engagement with the film winding shaft of the film cartridge 1, and thereafter, the operation of closing the rear lid is performed. Upon receiving the signal, the control means (not shown) feeds the film or the like.

According to such a second embodiment, the first
It has almost the same effect as the embodiment, and since the lid member is engaged when the film cartridge is taken out, it is not necessary to continue pressing the film cartridge with a finger or the like, and the lid member is engaged at one end. If so, the film cartridge can be easily taken out.

[0027]

As described above, according to the present invention, it is possible to provide an inexpensive and small space camera in which the film cartridge can be easily taken out from the camera body.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a cartridge storage chamber of a camera according to a first embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view of the vicinity of a lid member showing an operation when taking out the film cartridge of the first embodiment.

FIG. 3 is a perspective view showing a cartridge storage chamber and a film cartridge loaded therein when the rear cover of the camera of the first embodiment is opened.

FIG. 4 is a vertical sectional view of a cartridge storage chamber of a camera according to a second embodiment of the present invention.

[Explanation of symbols]

 1 ... Film cartridge 2 ... R fork (driving member) 2a ... R fork gear 3 ... Lid member 4 ... Return spring 5 ... Film cartridge storage chamber 6 ... Locking claw 7 ... Locking spring 8 ... Release lever

[Procedure amendment]

[Submission date] October 15, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0005

[Correction method] Change

[Correction content]

[0005]

However, in the one disclosed in Japanese Patent Laid-Open No. 3-296029, since the eject mechanism is moved in association with the opening / closing operation of the lid, the gear train or the like for interlocking is provided. Many are required and the mechanism becomes complicated. Also, in order to be able to eject the film cartridge without increasing the force required to open and close the lid, it is necessary to reduce the force required to push out the cartridge as much as possible. It must move smoothly without much frictional force, etc., and if the lid is placed on the lower surface of the camera, there is a possibility that the cartridge will drop when the lid is opened. For this reason, the lid must be placed on the upper surface of the camera, which not only imposes a restriction on the layout of each part of the camera, but also is not preferable in appearance.

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

Claims (1)

[Claims] 1. A film cartridge housing chamber for housing a film cartridge containing a film wound on a winding shaft, a position for protruding into the housing chamber and engaging with the winding shaft of the film cartridge, and a retracting position therefrom. And a drive member that is provided so as to be movable in the axial direction between the drive position and the position where A camera comprising: a lid member that moves along the camera.