JPH08334815A - Camera - Google Patents

Abstract

PURPOSE: To prevent the increase of size, while making the flatness of a film in an aperture surface excellent by curving a film traveling path reaching an aperture from a film cartridge chamber and arranging a battery chamber between the film cartridge chamber and the aperture. CONSTITUTION: The film traveling path is curved at an A-point, that is, a point held between a film feeding roller 2 and a first pinch roller 23. Further, a capacitor 100, a battery 101 and the battery chamber are arranged between an aperture chamber 1c as the optical path of a photographic lens 29 and the cartridge chamber 1a. When the distance L from the A-point to the aperture is not set long, the flatness of the film can not be secured in the aperture, because the film traveling path is curved at the A-point. Therefore, the dimension L is set large. Moreover, the capacitor 100, the battery 101 and the battery chamber are disposed in a space held between the aperture chamber 1c and the cartridge chamber 1a. Thus, the space is effectively used to obtain a compact camera.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera in which a film traveling path is bent at least at one place between a film cartridge chamber and an aperture.

[0002]

2. Description of the Related Art A camera in which a film running path is bent at least at one place between a film cartridge chamber and an aperture is disclosed by the present applicant in Japanese Patent Laid-Open Nos. 63-221330 and 63-221331. Has been proposed by.

On the other hand, a new type of film cartridge has been proposed in US Pat. No. 4,841,319, in which film is unwound and rewound by forcibly driving a film supply spool in the cartridge. It is configured. Hereinafter, this type of cartridge will be referred to as a thrust type cartridge.

With this thrust type cartridge,
The camera ejects the film from the cartridge by rotating the film supply spool in the cartridge, and drives the film as it is to feed the leading end of the film to the film take-up spool of the camera and wind the film.
After that, normal film feeding can be performed.

In order to maximize the propulsive force of the film discharged from the thrust type cartridge, it is necessary to match the traveling path of the film with the shape of the film wound around the film feeding spool in the cartridge. Therefore, it is necessary to incline the film discharge port of the thrust type cartridge with respect to the film surface of the aperture and form the film running path so that it gradually becomes flat from the shape wound on the film supply spool in the cartridge to the aperture position. There is. This results in the above-mentioned JP-A-6
Similar to the cameras disclosed in JP-A-3-221330 and JP-A-63-221331, the film running path is bent between the cartridge chamber and the aperture.

[0006]

However, in the above conventional example, the film running path is bent, and if the flatness of the film is to be improved on the aperture surface, a sufficient distance between the bent portion and the aperture is ensured. There is a drawback that the camera becomes large in size.

[0007]

It is an object of the present invention, as set forth in claims 1 to 3, to prevent a camera from becoming large while improving the flatness of the film on the aperture surface in a camera having a curved film traveling path. That is.

It is an object of the present invention as set forth in claims 3 to 6 to improve the flatness of a film on an aperture surface in a camera which can use a thrust type cartridge and has a curved film traveling path. It is to prevent the camera from becoming large.

[0009]

In order to achieve the above-mentioned object of the present invention, the present invention according to claim 1 provides that "the film running path from the film cartridge chamber to the aperture is bent at at least one place. By providing the battery chamber between the film cartridge chamber and the aperture, it is possible to improve the flatness of the film on the aperture surface and prevent the camera from increasing in size.

In order to achieve the above-mentioned object of the present invention, the present invention set forth in claim 2 is that "the film running path from the film cartridge chamber to the aperture is bent at least at one place, By providing a film feeding motor between the aperture and the aperture, it is possible to improve the flatness of the film on the aperture surface and prevent an increase in size.

In order to achieve the above-mentioned object of the present invention, the present invention set forth in claim 3 is that "the film running path from the film cartridge chamber to the aperture is bent at least at one place, and By providing a film feeding motor between the aperture and the aperture, it is possible to improve the flatness of the film on the aperture surface and prevent an increase in size.

In order to achieve the above-mentioned object of the present invention, the present invention as set forth in claim 4, "Uses a film cartridge in which a film can be discharged and taken in from the film cartridge by rotation of a film supply spool in the film cartridge. It is possible that the film running path from the film cartridge chamber into which the film cartridge can be loaded to the aperture is bent at least at one place, and the battery chamber is arranged between the film cartridge chamber and the aperture. As a result, it is possible to provide a camera capable of preventing the enlargement while improving the flatness of the film on the aperture surface. In order to achieve the above-mentioned object of the present invention,
According to the present invention as set forth in claim 5, "a film cartridge in which a film can be discharged and taken in from the film cartridge by rotation of a film supply spool in the film cartridge can be used, and the film cartridge can be loaded. The film running path from the chamber to the aperture is bent at at least one place, and the film feeding motor is arranged between the film cartridge chamber and the aperture,
We will provide a "camera that can improve the flatness of the film on the aperture side and prevent the size from increasing."

In order to achieve the above-mentioned object of the present invention, the present invention as defined in claim 6 uses a film cartridge in which a film can be ejected and taken in from the film cartridge by rotation of a film supply spool in the film cartridge. It is possible that the film traveling path from the film cartridge chamber into which the film cartridge can be loaded to the aperture is bent at least at one place, and a strobe device condenser is arranged between the film cartridge chamber and the aperture. Therefore, a camera capable of preventing the size from increasing while improving the flatness of the film on the aperture surface is provided.

[0014]

【Example】

(First Embodiment) FIG. 1 is a sectional view showing a first embodiment of the present invention.

Reference numerals 1 to 31 refer to JP-A-63-22133.
No. 0 has the same operation and configuration.

Reference numeral 1 is a camera body, 1a is a cartridge room, 1
Reference numeral b is a spool chamber and 1c is an aperture chamber, which serves as an optical path of a photographing lens 2a described later. 2 is a film feeding roller,
3 is a front cover, 4 is a protective glass, 5 is a film detection switch, 6 is a rear cover, 7 is a glass plate, 8 is a spool, 9
Is a motor, 10 is a roller supporting plate, 11 is a spring, 12 is a film winding roller, 13 is a roller supporting plate, 14 is a film winding roller, 15 is a front plate unit, 16 is a pressure plate, 17 is a pressure plate spring, 19 Is a back lid, 20 is a pin, 21
Is a pinch roller support plate, 22 is a spring, 23 is a first pinch roller, 24 is a pin, 25 is a second pinch roller, 26 is a patrone pressing spring, 27 is a back lid opening / closing operation knob, 28
Is a back lid opening / closing lever, 29 is a taking lens, 30 is a splot, 31 is a light shielding material, F is a film, and P is a film cartridge. Reference numeral 100 denotes a main condenser, which is a known condenser for accumulating energy when a flash tube of a built-in strobe device (not shown) emits light. Reference numeral 101 is a battery which is a power source for supplying electricity to the motor 9 which is the driving means of the camera and the main condenser. Reference numeral 102 denotes a battery chamber that houses the battery 101, which is provided integrally with the camera body 1.

The film running path is bent as shown in the figure at the point A, that is, at the point between the film feeding roller 2 and the first pinch roller 23.

The main condenser 100, the battery 101,
The battery room is the aperture room 1c which is the optical path of the taking lens 29.
And the cartridge chamber 1a.

Since the film running path is bent at the point A, the flatness of the film cannot be ensured at the aperture unless the distance L from the point A to the aperture is sufficiently large. In the present invention, the L dimension in FIG. 1 is made sufficiently large to ensure the flatness of the film, but the main capacitor, the battery, and the battery chamber are placed in the space sandwiched between the aperture chamber 1c and the cartridge chamber 1a. Since it is arranged, the space can be used without waste, making it a compact camera.

(Second Embodiment) FIGS. 2 and 3 show a second embodiment of the present invention. The film cartridge used in this embodiment is the thrust type cartridge described above. A camera that uses this thrust cartridge differs from a camera that uses a conventional type film cartridge in that the fork that engages the film supply spool in the cartridge and the spool that winds the film discharged from the cartridge move. Therefore, there is provided a motor for driving a fork and a motor for driving a film take-up spool separately, which simplifies a film feeding mechanism.
It is disclosed in Japanese Patent No. 174525 and is particularly suitable for such a camera.

Reference numeral 201 is a camera body, 201a is a cartridge chamber into which a film cartridge P2 described later can be loaded,
201b is a spool chamber in which a spool 211 described later is housed, 201c is an aperture chamber which is an optical path of a photographing lens 202 described later, 202 is a known photographing lens, and 203 is a back cover. 204 is a pin, and the back cover 2 is fixed by the pin 204.
Reference numeral 03 is rotatably attached to the camera body 201. The back cover 203 has a structure that can be opened and closed by a known mechanism. Reference numeral 205 is a film pressure plate, and 206 is a pressure plate spring. The film pressure plate 205 is attached to the back cover 203 via the pressure plate spring 206. When the back cover 203 is closed, a predetermined clearance is provided between the film pressure plate 205 and the camera body. To form a film running path. 207 is a roller plate made of an elastic material and attached to the back cover 203,
The film is pressed against a spool 211 described below and the film is wound around the spool. Reference numeral 208 denotes a spool motor that drives a spool 211 via a known gear train G1 described below, and 209 is a fork motor that drives a fork 210 described below via a known gear train G2 described below, and a fork motor 209. Is the cartridge chamber 201
It is arranged in a space sandwiched between a and the aperture chamber 201c. Reference numeral 210 is a fork that engages with and drives the film supply spool in the film cartridge.

Reference numeral 211 denotes a known film winding nest pool, which is driven by a spool motor 208 via a gear train G1. The spool 211 has a claw around which a film can be engaged with a perforation for winding the film, or a rubber or the like is wound around the spool 211, which is a known one capable of automatically loading the film.

In FIG. 3, G1 is a known gear train, which decelerates the output of the spool motor 208 and outputs it. 212
Is a gear that transmits the output of the gear train G1 to the spool.

G2 is a known gear train for decelerating the output of the fork motor 209 and transmitting it to the fork.
P2 is the above-mentioned thrust type film cartridge,
When the film supply spool in the cartridge is rotated, the film is discharged from the discharge port P2a.

At this time, due to the curling of the film wound on the film supply spool in the cartridge and the direction of the driving force of the film, the film outlet P2a is located in the running path of the film formed by the film pressure plate 205 and the camera body. On the other hand, the maximum film driving force is obtained by inclining the angle α from the vertical. The distance L2 from the position (indicated by the point B in FIG. 2) from the position where the film discharged from the cartridge runs along the plane parallel to the film pressure plate 205 to the aperture is sufficient to ensure the flatness of the film. It needs to be set large.

The fork motor 209 is used in the aperture chamber 2
01c and the cartridge chamber 201a, the compactness of the camera is not impaired even if the distance L2 is set sufficiently large. Further, the fork motor 209 is the fork 210 of the aperture chamber 201c.
The gear train for transmitting the driving force from the fork motor 209 to the fork 210 can be made short because it can be arranged in the vicinity of.

Of course, in the space between the aperture chamber 201c and the cartridge chamber 201a, in addition to the fork motor 209, a battery as a power source and a main condenser for stroboscopic light emission can be arranged, but the camera is not compact. That is, the advantage that the flatness of the film can be ensured is obtained.

The present invention is not limited to the configuration of the above-described embodiment, but may have any configuration as long as it can achieve the function shown in the claims or the function of the configuration of the embodiment. Needless to say.

Further, the respective embodiments may be combined as necessary, or the constituent elements of each embodiment may be combined as necessary.

The present invention may be constructed in such a manner that all or a part of the structure of the claims or the embodiments forms one device or is combined with another device. It may be an element that does.

The present invention is used in various forms of cameras such as single-lens reflex cameras, lens shutter cameras, video cameras, etc., as well as optical equipment and other devices in addition to cameras, and those cameras, optical equipment and other devices. Equipment,
Alternatively, it can also be applied to the elements constituting these.

[0032]

According to the invention of claim 1, the film running path from the film cartridge chamber to the aperture is bent at least at one place, and the battery chamber is arranged between the film cartridge chamber and the aperture. By doing so, it is possible to provide a camera that can prevent the size from increasing while improving the flatness of the film on the aperture surface.

According to the second aspect of the present invention, the film running path from the film cartridge chamber to the aperture is bent at at least one point, and the film feeding motor is arranged between the film cartridge chamber and the aperture. By doing so, it is possible to provide a camera that can improve the flatness of the film on the aperture surface and prevent the size from increasing.

According to the third aspect of the invention, the film running path from the film cartridge chamber to the aperture is bent at at least one place, and the film feeding motor is arranged between the film cartridge chamber and the aperture. By doing so, it is possible to provide a camera that can improve the flatness of the film on the aperture surface and prevent the size from increasing.

According to the invention of claim 4, a film cartridge can be used in which the film can be discharged and taken in from the film cartridge by rotation of the film supply spool in the film cartridge, and the film cartridge can be loaded. The film running path from the cartridge chamber to the aperture is bent at least at one place, and the battery chamber is arranged between the film cartridge chamber and the aperture, so that the flatness of the film on the aperture surface is improved. It is possible to provide a camera that can prevent the size from increasing.

According to the invention of claim 5, a film cartridge can be used in which the film can be discharged and taken in from the film cartridge by rotation of the film supply spool in the film cartridge, and the film cartridge can be loaded. The film traveling path from the cartridge chamber to the aperture is bent at least at one place, and the film feeding motor is arranged between the film cartridge chamber and the aperture, so that the flat surface of the film on the aperture surface. It is possible to provide a camera that can be prevented from increasing in size while improving its performance.

According to the invention of claim 6, a film cartridge can be used in which the film can be ejected and taken in from the film cartridge by rotation of the film supply spool in the film cartridge, and the film cartridge can be loaded. The film running path from the cartridge chamber to the aperture is bent at least at one place, and the condenser for the stroboscopic device is arranged between the film cartridge chamber and the aperture, so that the flatness of the film on the aperture surface can be improved. It is possible to provide a camera that can improve the size and prevent the size from increasing.

[Brief description of drawings]

FIG. 1 is a horizontal sectional view of a camera according to a first embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the camera of the second embodiment of the present invention with the front cover removed.

3 is a schematic view of a film feeding mechanism of the camera of FIG.

[Explanation of symbols]

1 ... Camera body 1a ... Cartridge chamber 1b ... Spool chamber 1c ... Aperture chamber 2 ... Film feeding roller 3 ... Front cover 4 ... Protective glass 5 ... Film detection switch 6 ... Rear cover 7 ... Glass plate 8 ... Spool 9 ... Motor 10, 13 ... Roller support plate 11, 22 ... Spring 12, 14 ... Film winding roller 15 ... Front plate unit 16 ... Pressure plate 17 ... Pressure plate spring 19 ... Back lid 20 ... Pin 21 ... Pinch roller support plate 23 ... First Pinch roller 24 ... Pin 25 ... Second pinch roller 26 ... Patrone pressing spring 27 ... Back lid opening / closing knob 28 ... Back lid opening / closing lever 29 ... Shooting lens 30 ... Sprocket 31 ... Shading material 101 ... Battery 102 ... Battery chamber 100 ... Strobe Device main condenser 201 ... Camera body 201a ... Film cartridge chamber 201b Spool chamber 201c ... Aperture chamber 202 ... Shooting lens 203 ... Back cover 204 ... Pin 205 ... Pressure plate 206 ... Pressure plate spring 207 ... Roller support plate 208 ... Spool drive motor 209 ... Fork drive motor 210 ... Fork 211 ... Spool P2 ... Thrust Type film cartridge G1, G2 ... Gear train 212 ... Gear

Claims (6)

[Claims] 1. A camera in which a film running path from a film cartridge chamber to an aperture is bent at least at one place, a battery chamber is arranged between the film cartridge chamber and the aperture. camera. 2. A camera in which a film running path from a film cartridge chamber to an aperture is bent at least at one place, a film feeding motor is arranged between the film cartridge chamber and the aperture. Characteristic camera. 3. A camera in which a film traveling path from a film cartridge chamber to an aperture is bent at least at one location and which has a built-in strobe device, wherein the strobe device is provided between the film cartridge chamber and the aperture. A camera characterized in that a condenser for use is arranged. 4. In a camera capable of using a film cartridge in which a film can be discharged and taken in from the film cartridge by rotation of a film supply spool in the film cartridge, a film from a film cartridge chamber in which the film cartridge can be loaded to an aperture. A camera characterized in that a traveling path is bent at least at one place, and a battery chamber is arranged between the film cartridge chamber and the aperture. 5. In a camera capable of using a film cartridge in which a film can be discharged and taken in from the film cartridge by rotation of a film supply spool in the film cartridge, a film from a film cartridge chamber in which the film cartridge can be loaded to an aperture. A camera characterized in that a traveling path is bent at at least one place, and a film feeding motor is arranged between the film cartridge chamber and the aperture. 6. A camera having a built-in strobe device in which a film cartridge capable of ejecting and winding film from the film cartridge by rotation of a film supply spool in the film cartridge is used, and the film cartridge is loaded. A camera characterized in that a possible film running path from a film cartridge chamber to an aperture is bent at least at one place, and a strobe device condenser is arranged between the film cartridge chamber and the aperture.