JPH02176740A - Camera - Google Patents

Abstract

PURPOSE:To prevent the interval mechanism of a camera main body from being viewed and to prevent a user from feeling uneasy unnecessarily by performing the drop-in loading of a film only by the necessary irreducible opening operation of a cartridge chamber. CONSTITUTION:A 1st lid body 2 is opened and a film cartridge 14 is dropped in the cartridge chamber 8 so that the film leader part is applied onto a 2nd lid body 6. Then the 2nd lid body 6 is pressed and opened by the insertion extent of the film leader part, which is inserted into a guide opening. Then the 2nd lid body 6 closes the film guide opening and then parts other than necessary part in the camera main body 1 are never viewed during the period. Further, the 1st lid body 2 is closed to perform automatic loading operation. Thus, the inside of the camera main body 1 is prevented from being viewed as much as possible when the film is loaded and the user does not feel uneasy about whether the film is securely loaded or not.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a so-called drop-in loading (DL) type camera in which film is dropped into the camera and loaded.

[Prior Art] Generally, commercially available film has a film leader part of a predetermined length pulled out from a film cartridge, and the film is dropped into a predetermined position in the camera body and the film replacement lid is closed. Accordingly, cameras have been proposed in recent years that employ a drop-in loading method in which a portion of the film leader is automatically wound around a spool and the film is wound up to the first frame.

By adopting such a drop-in loading method, loading film can be dramatically simplified, allowing anyone, regardless of age or gender, to load the film without having to worry about it. There is.

Cameras that use this drop-in loading method have two methods: loading film by opening and closing the back cover of the camera body, loading film by opening and closing the bottom cover of the camera body, and loading film by opening and closing the side cover of the camera body. There is a known method in which the film is loaded using a back lid method, West German Patent (DP) No. 3151663, and a bottom lid method.
There is United States Patent (USP) No. 4,469,423, and Japanese Patent Application Laid-Open No. 59-218,433 as a horizontal lid type.

[Problems to be Solved by the Invention] Incidentally, in a camera that employs such a drop-in loading method, although the film loading operation itself is not difficult, the following points may cause concerns about film loading, and as a result, film loading may become difficult. Sometimes it felt like a hassle.

In other words, (1) For example, when you open the back cover of a camera to load film, you can see the inside of the camera body, and you are worried that you may damage the camera or that you may accidentally open another part. I'm worried about that.

(2): The operation for loading film is as simple as loading the film cartridge and part of the film leader into the designated positions on the camera body; for example, there is no need to insert part of the film leader into the spool. , part of the film leader remains loose until the back cover is closed. Therefore, it becomes a concern whether or not the film can be wound.

The purpose of the present invention is to provide a drop-in loading system that allows the interior of the camera body to be hidden as much as possible when loading film, eliminates the need to worry about whether or not the film is securely loaded, and allows for easy reloading of film. It is in the place where the camera of the system is provided.

[Means for Solving the Problems] The gist of the present invention is to provide a cartridge for storing the film cartridge along its length in the film cartridge chamber on the bottom side of the camera body. In addition to forming an opening, a film guiding opening is formed between the cartridge chamber and a spool chamber for winding the film and extends to the bottom of the camera body for supporting and guiding the film through the photographic exposure surface. Further, the cartridge opening is covered with a first lid body which can be opened and closed, and the film guiding opening is covered with a second lid body at the opening end thereof.
A camera equipped with an autoloading mechanism, which is coverd in an openable and closable manner by a lid body, and is configured to close the film guide opening at all times by means of a biasing means for the second lid body, the second lid body being , when the film piece is pressed from the front surface side, the film piece is inserted into the film guiding opening and pushed out against the biasing force of the biasing means, and the first lid body and the second lid body means that when the first lid body is opened beyond the opening degree necessary for loading the film cartridge, the second lid body resists the biasing force of the biasing means and closes the film cartridge. The camera is characterized in that it is configured to be interlocked with a lid driving means that opens a guide opening.

[Function] In the camera configured as described above, when the first lid is opened and the film cartridge is dropped into the cartridge chamber by placing a part of the film leader on the second lid, the film leader section opens the camera. The second lid is pushed open by the amount by which a part of the film leader is inserted, a part of the film leader is inserted into the film guiding opening, and the second lid closes the film guiding opening again. During this time, you will not be able to see any parts of the camera body that are not necessary. Then, by closing the first lid, an autoloading operation is performed. Also, if the autoloading operation fails, for example, if the first lid is opened wide,
Since the second lid opens the film guide opening, the film in the film guide opening can be easily taken out.

[Example] The present invention will be described in detail below based on an example shown in the drawings.

FIG. 1 shows an embodiment of the present invention, FIG. 1(a) is a plan view of the camera seen from the bottom, and FIG. 2(b) is a side view of the camera. The film is loaded by dropping the film in by opening and closing the lid.The film is wound onto the spool in reverse, and when a predetermined number of frames of film have been shot, the film is automatically unloaded. It is designed to be rewound into the film cartridge. Note that the spool mechanism, which winds the film around the spool by closing the bottom lid, is omitted.

Reference numeral 1 denotes a camera body, which has a cartridge chamber 8 for storing a film cartridge 14 on the back side, and a groove 2 for partially dropping a film leader, which communicates with the cartridge chamber 8 and opens to the bottom of the camera body. The groove 2 extends to a spool chamber (not shown), and an aperture (not shown) for exposing the film is formed around the optical axis 12 of the taking lens 11, so that the film can be passed through the taking lens 11. An image is focused onto the film. The bottom opening of the cartridge chamber 8 is closed with a light-shielding property by a bottom lid 6 that can be opened and closed around hinges 6a and 6b.
It is released by opening it. The bottom cover 6 is opened at a first open position for film exchange, and further opened from the first open position to forcibly evacuate a flap 3, which will be described later, from above the opening of the groove 2 due to a failure in autoloading or the like. It is adapted to open into two open positions, a second open position.

When the bottom cover 6 is in the closed state, when the bottom cover opening/closing knob 9 provided on the camera body is slid, the bottom cover 6 is biased in the opening direction by a spring 7 with a weak spring force so that it automatically opens, and it can also be closed manually. When the bottom cover is closed in the direction shown in FIG. be done.

Reference numeral 3 denotes a light-shielding flap attached to the camera body that covers the opening of the groove 2. The flap 3 extends to the cartridge chamber 8 side, and as shown in Fig. 4, one side of the bottom side faces the inner side. A sloped surface 3b is formed up to a position substantially corresponding to the groove portion 2. And film leader part 15
When pressed against this inclined surface 3b from the bottom side in the direction of the arrow, a component of the force of the film leader part 15 applied to the inclined surface 3b,
The flap 3 rotates counterclockwise in FIG. 1(a), and retreats into a space lb formed at the back of the camera body, as shown in FIG. This flap 3 is the support shaft 4
For the flap, which is rotatably supported by a shaft, and has a relatively strong spring force in order to reliably close the groove 2 (however, the spring force is such that the pressing force of the film leader part 15 allows the flap 3 to rotate). It is biased clockwise by a spring 5.

In this embodiment, the flap 3 rotates during photographing to open the groove and prevent the film from being exposed to light, and when replacing the film, the flap 3 rotates more than necessary in the direction of the half-hour hand, opening the groove.
In addition, the flap 3 can be forcibly retracted completely from the groove 2 in order to prevent the inside from being seen and to pull out a part of the film leader from the groove in the event of a failure such as autoloading. This structure will be explained.

A driven lever portion 3a serving as a cam follower is integrally formed at one end of the flap 3, and a cam portion 60 is formed in sliding contact with the driven lever portion 3a on the inner surface of the bottom lid 6.
A stopper protrusion 6d is integrally formed on the inner surface of the bottom cover 6, facing the cam part 60, which contacts the driven lever part 3a and prevents the flap 3 from rotating counterclockwise in the closed state. There is.

Therefore, when the bottom cover 6 is closed, the stopper protrusion 6d comes into contact with the driven lever portion 3a and is forcibly prevented from rotating counterclockwise, causing the flap 3 to inadvertently rotate. This will prevent you from doing so.

The cam portion 60 is formed integrally with the bottom cover 6 around the rotation axis of the hinge 6a of the bottom cover 6, as shown in FIG. 1(b), and is integrally formed with the bottom cover 6 as shown in FIGS. (When the bottom cover 6 is opened to the extent necessary for loading the film, the flap 3 comes into contact with the driven lever part 3a, and the film leader part pushes the flap 3 and rotates the flap 3 counterclockwise. FIG. 2(a) shows a first cam surface 6e that prevents the flap 3 from retracting from the opening of the groove 2 while allowing movement.

3(a), (
Open as shown in b) and open the driven lever part 3a of the flap 3.
A second cam surface 6f is formed that pushes the driven lever portion 3a against the spring force of the flap spring 5 while making contact with the second cam surface 6f, thereby completely retracting the flap 3 from the opening of the groove portion 2.

That is, when the cover opening/closing knob 9 is slid when changing the film, the bottom cover 6 opens due to the biasing force of the spring 7, which has a weak spring force, but when the first cam surface 6e comes into contact with the driven lever part 3a, the flap closes. Since the spring force of the spring 5 is strong, the first cam surface 6
e serves as a stopper and the bottom cover 6 is closed as shown in Fig. 2(a), (
b) is held in the first open position. The flap 3 can only be rotated clockwise until the first cam surface 6e contacts the driven lever portion 3a, but as shown in FIG. Since the flap 3 is allowed to rotate in the direction of the half-hour hand, the film can be dropped and loaded, and once the film has been loaded, the opening of the groove 2 is closed again by the spring force of the flap spring 5, and the groove is closed again. The inside of 2 will no longer be visible.

Further, when the bottom cover 6 is opened wide, the driven lever part 3a of the flap 3 climbs over the first cam surface 6e and reaches the flat second cam surface 6e.
The flap 3 is pushed by the cam surface 6f and rotates to the position where it is completely retracted from the opening of the groove 2, so that the opening of the groove 2 is completely opened. A certain film 13 can be easily taken out without being obstructed by the flap 3. At this time, the flap 3 is held in the second open position shown in FIGS. 3(a) and 3(b) by the locking action of the second cam surface 6f and the frictional force.

Then, drop and load the film again, and then
When closed, the contact between the cam part 60 and the driven lever part 3a is released, and the flap 3 is rotated clockwise by the flap spring 5 to close the opening of the groove part 2, as shown in FIG. .

When a predetermined number of frames of film are photographed, a part of the film league is automatically rewound into the film cartridge, so that the film cartridge can be taken out from the cartridge chamber without being obstructed by the flap 3.

FIG. 5 is a sectional view of a main part showing another embodiment of the present invention.

In the embodiment described above, the biasing force in the closing direction of the flap 3 is obtained by the spring 5, but in this embodiment, a magnet 17 is attached to one end of the flap 3, and a magnet 17 is attached to the camera body opposite to the magnet 17. An iron piece 18 is attached to the side so that a biasing force is applied to the flap 3 by magnetic force instead of the spring 5.

In this case, as in the above embodiment, the flap 3 is moved clockwise (the flap is moved toward the opening of the groove 2) by the spring 5 having a strong spring force.
For example, in Figure 1 (a)
), the stopper protrusion 6d of the bottom cover 6 has an inclined tip on the side that comes into contact with the driven lever part 3a, so that it can easily engage with the driven lever part 3a. When the bottom cover 6 is closed, the stopper projection 6d pushes the driven lever portion 3a to move the flap 3 toward the closed position.

Furthermore, when the bottom cover 6 is opened, in the above embodiment, the flap 3 is forcibly rotated clockwise by the spring 5 to the position where the driven lever portion 3a abuts the first cam surface 6e, but in this embodiment In the example, since the flap 3 is held in the closed position covering the opening of the groove 2 by magnetic force, there is no need to provide a biasing means for bringing the driven lever portion 3a into contact with the first cam surface 6e.

Therefore, the force that separates the iron piece 18 and the magnet 17 needs only to be enough to allow the flap 3 to open when a part of the film leader is inserted, and the magnet has a small magnetic force that can tightly hold the flap 3 in the closed position. It is sufficient if it has a large permeance coefficient.

In this embodiment, the magnet 17 is attached to the flap 3 and the iron piece 18 is attached to the camera body side, but the reverse may be used.

[Effects of the Invention] As explained above, according to the present invention, when changing a film, the film can be dropped and loaded by simply opening the minimum required cartridge chamber. The opening only opens to the extent that the film is inserted, and closes when the film is inserted, so you won't be able to see the internal mechanisms of the camera body, and you won't have to worry about it because you can't see part of the film leader. There will be nothing left to give to others.

Even if autoloading fails due to some kind of malfunction or inconvenience, for example, by opening the first lid that covers the film cartridge chamber wide, the second lid opens the film guide opening and guides the film. The film inserted into the opening can be easily taken out.
Film can be reloaded.

In addition, by closing the first lid, the second lid is fixed in the position where the film guide opening is closed, so if the camera is dropped, for example, the second lid will be inadvertently damaged due to impact. This also prevents the film from being exposed due to the opening of the film guide opening.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the camera according to the present invention, and FIGS. 1(a) and 4(b) are a bottom view and a side view showing a state in which the bottom cover is closed, and FIG. 2(a) , (b) is a bottom view and a side view showing the state in which the bottom lid is opened for film loading, FIGS. 3(a) and (b) are a bottom view and a side view showing the state in which the bottom lid is wide open, FIG. 4 is a sectional view showing how the flap is attached, and FIG. 5 is a sectional view showing another embodiment. 1: Camera body 2: Groove 3: Flap 4: Support shaft 5: Flap spring 6: Bottom cover 7: Spring 8: Batrone chamber 9: Bottom cover opening/closing knob 10: Knob biasing spring 11: Photographing lens
12; Optical axis 14: Film cartridge.

Claims (1)

[Claims] 1. A cartridge opening is formed on the bottom side of the camera body for storing the film cartridge in the film cartridge chamber along its length, and a cartridge opening for storing the film cartridge in the film cartridge chamber and for winding the film is formed. A film guide opening is formed between the spool chamber and the bottom of the camera body to support and guide the film through the photographic exposure surface, and a first lid body that can open and close the cartridge opening. In addition, the film guiding opening is covered in an openable and closable manner by a second lid at the opening end thereof, and the second lid is biased to always close the film guiding opening. The second lid body resists the urging force of the urging means so that when a piece of film is pressed from the front side of the second lid body, the piece of film can be inserted into the film guiding opening. The first lid body and the second lid body are configured such that when the first lid body is opened beyond the opening degree necessary for loading the film cartridge, the second lid body A camera characterized in that the lid is configured to be interlocked with lid driving means for opening the film guide opening against the urging force of the urging means. 2. The lid driving means is configured to prevent the second lid from moving in the opening direction when the first lid is closed. Camera listed.