JPH071627Y2 - Cartridge ejection mechanism in camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mechanism for loading and unloading a film cartridge to and from a camera.

[Conventional technology]

With a conventional camera, when I tried to take out the patrone containing the exposed film from the camera after shooting, I dropped the patrone as soon as I opened the back cover depending on the attitude of the camera, and the film was It was often ruined. Therefore, it has been requested to provide a mechanism for preventing the fall of the cartridge.

However, because it was difficult to install a fall prevention mechanism on the camera side,
In the current patrone, for example, in the method of loading the patrone from the bottom of the camera in its axial direction, the friction force due to the contact pressure of the contact piece for reading the DX code helps prevent falling, while the patrone from the back of the camera. In the loading method, the cartridge is fixed in the loading chamber by pressing the cartridge with the leaf spring against the inner wall of the cartridge chamber.

[Problems to be solved by the device]

However, it was not possible to reliably fix the cartridge by using the above-mentioned DX cord contact piece or leaf spring. Further, with such a configuration, there is a problem that it becomes difficult to take out the cartridge.

[Purpose of device]

The present invention has been made in view of the above points, and at the time of loading, the film cartridge can be inserted into the cartridge loading chamber in the correct posture, and the loaded film cartridge can be securely fixed to the cartridge loading chamber.
An object of the present invention is to provide a cartridge take-out mechanism in a camera that allows a film cartridge to be taken out easily at the time of taking out.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a notch into which a protrusion provided on the outer surface of a film cartridge is fitted.
A cartridge loading chamber formed from the cartridge insertion opening along the insertion direction, and when a film cartridge is loaded in the cartridge loading chamber, the film cartridge is locked at the loading position by being locked to the protrusion so that the film cartridge is in the loading position. When is further pushed, a cartridge lock member that releases the locking with the protrusion, and when the film cartridge is inserted, the protrusion or the film cartridge is contacted to store energy, and when the lock of the film cartridge is released, An urging member for projecting a part of the film cartridge from the cartridge insertion opening is provided.

[Action]

Since the present invention is configured as described above, when the film cartridge is loaded, if the cartridge is pushed into the loading chamber of the camera, the cartridge is securely fixed by the locking member so that it will drop even when the lid of the camera is opened. There is nothing.

On the other hand, at the time of taking out the film cartridge, the fixing is released by pushing the cartridge again, and the film cartridge is pushed out.Therefore, it may be difficult to take out because the member provided inside the camera catches the cartridge. Disappear.

〔Example〕

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the configuration of the first embodiment of the present invention. In the figure, 1 is a film cartridge.
The film cartridge 1 is a novel one having a shape different from that of a conventional cartridge, and as shown in the drawing, the film is housed so that its tip does not protrude outside the port portion of the cartridge. Both ends of the spool are projected on both end surfaces of the film cartridge 1, and a center boss 1a and a gear portion 1c of the cartridge are formed at both ends of the spool. A posture control boss 1b is formed on at least one end surface of the film cartridge 1 in a direction orthogonal to the loading direction of the film cartridge.

Reference numeral 2 denotes a camera body, and a center slit 2a corresponding to the center boss 1a of the film cartridge 1 and a posture control slit 2b corresponding to the posture control boss 1b are formed on the side surface of the loading chamber in which the film cartridge 1 is loaded. ing.

Reference numeral 3 is a cartridge pushing member, and 4 is a cartridge pushing spring, which biases the film cartridge 1 in a direction to push it out of the loading chamber along a guide (not shown) provided in the main body 2.

Reference numeral 5 is a locking member, and as shown in FIG.
a, a temporary stop surface 5b, a locking surface 5c, a locking side surface 5f, and a digging slope 5d are formed.

The locking member 5 has the rotation center hole 5e formed in the camera body 2
Is loosely fitted to the locking member center boss 2c formed in the above and is urged clockwise by the locking member urging spring 6 in the drawing,
It is pressed against the outer wall surface of the camera body 2. Further, the camera body 2 is provided with a stopper portion 2d which comes into contact with the temporary stop surface 5b of the locking member 5 and receives the clockwise urging force of the stop member 5.

FIG. 3 shows the loading direction of the film cartridge 1 in this embodiment. When the lid 7 is opened and the camera is inserted in the lateral direction as shown in FIG. 3, the attitude control boss 1b is moved to the attitude control slit 2b. Further, the center boss 1a is fitted in the center slit 2a, and the film cartridge 1 is loaded in the correct posture.

Next, the operation of the embodiment having the above configuration will be described with reference to FIGS.

FIG. 4 is a view showing a state before the film cartridge 1 is loaded into the camera 2. In this state, the locking member 5 is urged clockwise by the urging spring 6, and the temporary stop surface 5b is in contact with the stopper portion 2d of the camera body 2. The cartridge push-out member 3 is pushed out to the outside (to the right) by the cartridge push-out spring 4 along a guide (not shown) to the full extent.

From this state, when the film cartridge 1 is pushed to the left in the drawing, the state shown in FIG. 5 is obtained. That is, the film cartridge 1 advances while pushing the cartridge push-out member 3 in the opposite direction to the cartridge push-out spring 4, whereby the turning slope 5a of the locking member 5 is pushed by the attitude control boss 1b of the film cartridge 1. The locking member 5 turns counterclockwise against the force of the biasing spring 6.

When the film cartridge 1 is pushed further in, when the attitude control boss 1b gets over the turning slope 5a of the locking member 5, the locking member 5 is rotated clockwise by the force of the locking member urging spring 6. As shown in FIG. 6, when the temporary stop surface 5b hits the attitude control boss 1b, it is temporarily stopped.

Here, when the person who is loading the cartridge releases the hand that pushes in the film cartridge 1, the film cartridge 1 is pushed back by the cartridge pushing member 3, and the attitude control boss 1b of the cartridge is released from the temporary stop surface 5b. When it hits the locking surface 5c of the locking member 5 which starts turning clockwise again, it stops in the state as shown in FIG. Then, the lid 7 shown in FIG. 3 is closed and the loading of the film cartridge 1 into the camera 2 is completed.

Next, when the film cartridge 1 is taken out of the camera 2 after a series of photographing and rewinding is finished, the camera lid 7 is opened and the film cartridge 1 in the state shown in FIG. 7 is pushed to the left again. When the attitude control boss 1b is disengaged from the locking side surface 5f of the locking member 5, the locking member 5 pivots clockwise, and the state shown in FIG. 8 is obtained.

Here, when the hand for pushing the film cartridge 1 is released, the cartridge pushing member 3 pushes the cartridge 1 to the right. Then, the attitude control boss 1b of the cartridge 1 flips up the locking member 5 in the front direction on the paper surface as shown in FIG. 9 along the recessed slope 5d of the locking member 5, so that the film cartridge 1 As it is, it is pushed by the cartridge pushing member 3 and pushed out from the loading chamber of the camera 2.

Next, a second embodiment of the present invention will be briefly described.

FIG. 10 is a perspective view showing the configuration of the second embodiment. The difference between this embodiment and the above-described first embodiment is that the cartridge is loaded from the side of the camera body 2 in the first embodiment, whereas the cartridge is loaded in the axial direction in this embodiment. is there.

In the figure, 11 is a film cartridge. The difference from the film cartridge 1 of the first embodiment is that the attitude control boss 11b is formed not on the end surface of the cartridge but on the circumferential surface. It has the same structure as that of the first embodiment. That is, 12 is a camera body, 12b is a posture control slit, 12d is a stopper portion, 13 is a cartridge pushing member, 14 is a cartridge pushing spring, and 15 is a locking member.

This locking member 15 is, like the first embodiment, a slope for turning.
15a, temporary stop surface 15b, locking surface 15c (not shown), beveled slope 15d (not shown), rotation center hole 15e, locking side surface 15f
And is biased by the locking member biasing spring 16 in the same manner as in the first embodiment.

The role of each member of the 0th embodiment is exactly the same as that of the member of the same name in the first embodiment, and the description of the operation is omitted.

In the above-mentioned two embodiments, the film cartridges of both the film cartridges do not project from the port portion, but when the cartridges are axially loaded as in the second embodiment, the film cartridge is particularly Not sticking out is not essential.

[Effect of device]

In the present invention, when the cartridge is loaded, the cartridge is pushed into the loading chamber of the camera, and the projection and a predetermined locking member fix the cartridge in the loading chamber. When the cartridge is taken out, the fixed film cartridge is pushed again from the loading chamber. Because it is configured to be extruded,
There is an effect that the cartridge can be surely loaded and the cartridge can be easily taken out. Further, when the cartridge is inserted into the loading chamber, the protrusion is fitted into the notch, so that the cartridge loaded in the loading chamber has the correct posture.

[Brief description of drawings]

FIG. 1 is a perspective view showing the configuration of the first embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of the main part of the embodiment. FIG. 3 is a simplified side view for explaining the operation of the embodiment. 4 to 9 are action diagrams for explaining the operation and action of the embodiment. FIG. 10 is a perspective view showing the configuration of the second embodiment of the present invention. 1 ... Film cartridge 1b ... Posture control boss 2 ... Camera body 2b ... Posture control slit 3 ... Cartridge pushing member 4 ... Cartridge pushing spring 5 ... Locking member 6 ... Spring. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] 1. A camera for loading a film cartridge by pushing the film cartridge through a cartridge insertion opening formed in a camera body, wherein a projection provided on an outer surface of the film cartridge is inserted so as to be orthogonal to an inserting direction of the film cartridge. A notch is formed in the cartridge loading chamber along the insertion direction, and when a film cartridge is loaded in the cartridge loading chamber, the notch is locked to the projection to lock the film cartridge in the loading position. When the film cartridge in is further pushed, a locking member that releases the locking with the projection and when the film cartridge is inserted, the projection cartridge or the film cartridge is contacted to store energy, and the lock of the film cartridge is released. When you fill Cartridge ejection mechanism in the camera, characterized by comprising a part of the cartridge and a biasing member to protrude from the cartridge insertion port.