JPH08286261A - Camera with film cartridge eject mechanism - Google Patents

Abstract

PURPOSE: To provide a camera provided with a film cartridge eject mechanism whose structure is simple and which can be constituted in a small space by constituting an interlocking mechanism so that its one end is fixed on an eject lever and the other end has a string member fixed on an opening/closing cover. CONSTITUTION: A cartridge chamber where a film cartridge 1 having a film take-up spool is loaded in the axial direction of the film take-up spool is provided inside the camera. The opening/closing cover 50 opens/closes one end of the cartridge chamber. The eject lever 70 is supported to be moved in a direction parallel with the axial direction of the cartridge chamber and a part of the lever 70 comes in contact with the film cartridge 1 in the cartridge chamber. When the cover 50 is opened, the interlocking mechanism interlockingly moves the lever 70 in a direction where the film cartridge 1 is pushed out. One end of the interlocking mechanism is fixed on the lever 70 and the other end has the string member 85 fixed on the cover 50, a projected arm part 56, a pin 58 and guiding pins 81 and 83.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera provided with a film cartridge eject mechanism for discharging a loaded film cartridge to the outside of the camera.

[0002]

2. Description of the Related Art US Pat. No. 5,122,
As known from JP-A No. 820 and JP-A No. 5,296,887, etc., in the unused state, even the leading end of the film is wound into the cartridge, and the light-shielding door provided in the cartridge is opened during use. There has been proposed a camera film cartridge having a structure in which a spool in the cartridge is rotated to discharge the film from the light shielding door.

In a camera using a film cartridge of this type, by inserting the film cartridge into a cartridge loading opening formed at the bottom or the top of the camera,
Generally, a camera has a structure for loading a film cartridge. In this general camera, a film cartridge eject mechanism that has a simple structure and does not hinder the downsizing of the camera has not been proposed.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a camera having a film cartridge eject mechanism which has a simple structure and can be constructed in a small space.

[0005]

SUMMARY OF THE INVENTION A camera provided with a film cartridge eject mechanism of the present invention is a camera having a cartridge chamber in which a film cartridge having a film take-up spool inside is loaded along the axial direction of the film take-up spool. An opening / closing lid for opening and closing one end of the chamber; an eject lever movably supported in a direction parallel to the axial direction of the cartridge chamber, a part of which contacts the film cartridge in the cartridge chamber; An interlocking mechanism for interlocking the eject lever in the direction of pushing out the film cartridge; and the interlocking mechanism has a string-like member whose one end is fixed to the eject lever and the other end is fixed to the opening / closing lid. It has a feature.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to illustrated embodiments. FIG. 3 shows a vertical sectional view of a camera 30 equipped with the film cartridge eject mechanism of the present invention.
The camera 30 uses a film cartridge of the type known in US Pat. Nos. 5,122,820 and 5,296,887 as a photographic film. First, the film cartridge will be described. 4 and 5 are perspective external views showing the film cartridge.

The film cartridge 1 has a cartridge outer frame 3 composed of a pair of outer frame halves 5 and 7. A spool (film winding spool) 1 around which a film (not shown) is wound is provided in the inner space of the cartridge outer frame 3.
1 is housed. Each end surface 13 of the cartridge outer frame 3
A hole 15 for exposing the corresponding fork engaging hole 11a formed at the shaft end of the spool 11 to the outside is formed in the central portion.

Further, the cartridge outer frame 3 is formed with a rectangular film discharging / injecting opening 17 along the longitudinal direction thereof, and light shielding for opening / closing the film discharging / injecting opening 17 is formed along the film discharging / injecting opening 17. A door 19 is provided. A shaft portion 19a coaxially positioned is integrally formed at each of both ends in the longitudinal direction of the light shielding door 19. Each shaft portion 19a is rotatably fitted in a hole 21 formed in the corresponding end surface 13 of the cartridge outer frame 3. A key groove 19b is formed on the end surface of each shaft portion 19a. The driver 51 provided on the camera 30 side engages with the one key groove 19b, and the turning of the driver 51 opens and closes the light shielding door 19. The film in the film cartridge 1 is rotated by the spool 11 with the light-shielding door 19 opened, so that the film discharge opening 1
The cartridge 7 is discharged to the outside of the cartridge outer frame 3 or stored inside.

Next, the camera 30 will be described in detail. Inside the camera 30, a spool chamber 31 and a cartridge chamber 32 are formed on the left and right. A spool 33 is rotatably provided in the spool chamber 31. A drive fork 34 that engages with the fork engagement hole 11 a of the film cartridge 1 is provided inside the cartridge chamber 32 in a state of protruding from the center of the upper end 32 a of the cartridge chamber 32 into the cartridge chamber 32.

Between the spool chamber 31 and the cartridge chamber 32, an aperture 39 is formed by the left and right aperture frames 35, 36 and the upper and lower aperture frames 37, 38 to determine the photographing range of one film frame. A film pressing leaf spring 41 is fixed to a side portion 35a of the aperture frame 35 on the spool chamber 31 side. At the tip of the film pressing plate spring 41, the film pressing roller 40 elastically contacted with the spool 33 by the film pressing plate spring 41.
Is provided. Note that reference numerals 43, 44, and 45 respectively indicate a finder, a taking lens, and a release button.

The camera 30 has a structure in which the film cartridge 1 is inserted into the cartridge chamber 32 via a loading port 47 formed in the camera bottom portion 46. The camera bottom 46 is provided with an opening / closing lid 50 pivotally attached by a shaft 49. The opening / closing lid 50 opens / closes the loading port 47, that is, the lower end of the cartridge chamber 32. Further, inside the camera 30, a driver 51 that is projected into the cartridge chamber 32 is provided. This driver 51
When the film cartridge 1 is inserted into the cartridge chamber 32 in a predetermined direction, is fitted into one of the key grooves 19b of the film cartridge 1. In the camera 30 of this embodiment, the driver 51 is fitted in the key groove 19b on the side shown in FIG. The driver 51 is rotated about a shaft 51a by a drive mechanism. This drive mechanism includes an interlocking arm 53, a relay lever 60, and a gear unit 5.
1b and the like.

1 and 2 show an embodiment of a film cartridge eject mechanism provided in the camera 30. 1 shows a state in which the opening / closing lid 50 is opened, and FIG.
Indicates a state in which the opening / closing lid 50 is closed. The driver 51 is provided so as to project into the inside of the cartridge chamber 32 through a hole (not shown) formed in the upper end 32a of the cartridge chamber 32, and is rotatable about an axis 51a of the camera 30. It is supported by an internal fixed portion (not shown).

Inside the camera 30, a cartridge chamber 32 is provided.
An interlocking arm 53 is arranged along the inner side wall. The interlocking arm 53 has a portion slightly below the center portion thereof supported by a fixed portion (not shown) inside the camera 30 so as to be rotatable about a shaft 54. At the lower end of the interlocking arm 53, an engaging portion 5 formed on the opening / closing lid 50 is provided.
0a is formed with a locking claw 53a, and the upper end is
A fork portion 53b that engages with the relay lever 60 is formed. An opening / closing knob 55 is provided on one side of the body of the camera 30.
By manually operating the opening / closing knob 55, the interlocking arm 53 rotates about the shaft 54. The interlocking arm 53, the opening / closing knob 55 and the like constitute an opening / closing lid lock mechanism.

A relay lever 60 is provided above the cartridge chamber 32 inside the camera 30 so as to be rotatable about a shaft 61 having the same rotation center as the drive fork 34. The relay lever 60 is formed with an engagement arm portion 60a that engages with the fork portion 53b of the interlocking arm 53, and a fan-shaped gear portion 60b that meshes with the gear portion 51b formed on the upper portion of the driver 51.

An eject lever 70 for ejecting the film cartridge 1 from the cartridge chamber 32 is provided near the cartridge chamber 32. The eject lever 70 is arranged along the side wall (not shown) of the cartridge chamber 32 and along the axial direction of the cartridge chamber 32 (vertical direction in FIG. 3) and extends in the longitudinal direction thereof. Has 71. A pair of guide pins 72 and 73, which are planted in a fixed portion (not shown) of the camera 30, are fitted into the elongated guide holes 71. The eject lever 70 is slidably supported in the vertical direction of the camera 30, that is, in the direction parallel to the axial direction of the cartridge chamber 32 by the relationship between the guide elongated hole 71 and the guide pins 72 and 73.

The eject lever 70 integrally has an engaging projection 74 formed by bending the upper end of the eject lever 70 toward the cartridge chamber 32 by 90 °. The engagement protrusion 74 allows the film cartridge 1 to be held in the cartridge chamber 32.
When it is inserted into the film cartridge 1, it is arranged at a position where it can abut the corresponding end surface 13 of the film cartridge 1. Further, the eject lever 70 has a pin 75 formed at the lower end thereof so as to project in the direction opposite to the engaging projection 74.

The opening / closing lid 50 is formed with a protruding arm portion 56 located near one end of the shaft 49 on the side closer to the eject lever 70. This protruding arm portion 56 is provided with the opening / closing lid 5.
0 extends vertically, and is located at a position extending upward of the camera 30 when the opening / closing lid 50 is in the closed position shown in FIG. 2, and when the opening / closing lid 50 is in the open position shown in FIG. It is located at a position extending toward the right direction of 30 (right direction of FIG. 3). That is, the protruding arm portion 56 has the opening / closing lid 5
Along with the opening / closing movement of 0, the shaft 49 is pivoted between the position extending upward of the camera 30 and the position extending rightward of the camera 30 (rightward in FIG. 3).

A pin 58 is integrally formed at the tip of the protruding arm portion 56. Between the pin 58 and the pin 75 of the eject lever 70, two guide pins 81 and 83 implanted in a fixed portion (not shown) of the camera 30 are provided. The guide pins 81 and 83 are planted along the front-rear direction of the camera 30 in parallel with each other. Each of the pins 58 and 75 is also formed along the front-back direction of the camera 30, and all of the pins 58 and 75 and the guide pins 81 and 83 are located in the same plane extending in the vertical and horizontal directions of the camera 30. Is formed.

More precisely, the guide pin 81 and the pin 75
Are arranged substantially on the same straight line extending in the vertical direction of the camera 30, and the guide pin 83 is shifted leftward with respect to the guide pin 81 by a predetermined distance in the left-right direction of the camera 30. It is arranged in a position. Further, the pin 58 is located at substantially the same position with respect to the guide pin 83 in the left-right direction of the camera 30 when the opening / closing lid 50 is at the open position shown in FIG. 1, while the opening / closing lid 50 is closed as shown in FIG. When in the position, the camera 30 is located at a position shifted leftward with respect to the left-right direction by a predetermined distance.
Further, the pin 58 is different from the guide pin 83 in the opening / closing lid 5
When 0 is in the open position shown in FIG. 1, it is located at a position separated by a distance L _{1 in} the vertical direction of the camera 30, while when 0 is in the closed position shown in FIG. Distance less than ₁ L ₂
It is located at a separated position.

The pins 58 and 75 are connected by a string (string-like member) 85 made of nylon or the like. The string 85 has one end fixed to the pin 75 and the other end fixed to the pin 5
8 and is provided in a state where the intermediate portion is passed between the guide pins 83 and 81. This string 85
The length of the film cartridge 1 is the cartridge chamber 3
2 and the opening / closing lid 50 is closed, the engaging projections 7 are formed on the corresponding end surfaces 13 of the film cartridge 1.
4 is set to such a length as to make a light contact, that is, the engaging protrusion 74 abuts the corresponding end face 13 in the same state, but the film cartridge 1 is not pushed out of the cartridge chamber 32. There is. That is, the string 85
And the positional relationship among the pins 58 and 75 and the guide pins 81 and 83 are set strictly. The interlocking mechanism that interlocks the eject lever 70 in the direction of pushing out the film cartridge 1 when the opening / closing lid 50 is opened is composed of the protruding arm portion 56, the pin 58, the guide pins 81 and 83, the string 85 and the like.

The camera 30 having the film cartridge eject mechanism having the above structure operates as follows. The film cartridge 1 has an opening / closing lid 5 shown in FIG.
It is inserted into the cartridge chamber 32 when 0 is open. At this time, first, the film cartridge 1 is manually inserted into the cartridge chamber 32 until the corresponding end surface 13 of the film cartridge 1 comes into contact with the engaging protrusion 74 of the eject lever 70, and then the opening / closing lid 50 is manually inserted. While closing, the film cartridge 1 is pushed into the cartridge chamber 32. Film cartridge 1
As is pushed into the cartridge chamber 32, the eject lever 70 moves upward from the camera 30 from the position shown in FIG. 1 to the position shown in FIG. At the same time, the driver 51 is fitted into the one key groove 19b of the film cartridge 1.

Thereafter, in order to lock the opening / closing lid 50,
Manually lock the opening / closing knob 55 with the locking claw 53a
Turn in the direction to engage a. Then, the interlocking arm 53 also rotates in the same direction, so that the fork portion 53b moves toward the engaging arm portion 60.
a is moved from left to right in FIG. 1, and as a result, the relay lever 60 rotates counterclockwise in FIG. The rotation of the relay lever 60 is transmitted to the driver 51 via the fan-shaped gear portion 60b and the gear portion 51b.
1 rotates clockwise in FIG. By this rotation, the driver 51 opens the light blocking door 19 of the film cartridge 1. The film in the film cartridge 1 is fed toward the spool chamber 33 by a film feeding mechanism (not shown) when the light shielding door 19 is opened, and the loading of the film is completed.

When the film cartridge 1 is taken out from the cartridge chamber 32 after the film has been completely wound up in the film cartridge 1 after a series of photographing is finished, first, the opening / closing knob 55 is manually locked.
3a is rotated in a direction to release the engagement with the engaging portion 50a. Then, the interlocking arm 53 also rotates in the same direction, whereby the fork portion 53b moves the engaging arm portion 60a from right to left in FIG. 2, and as a result, the relay lever 60 rotates in the clockwise direction in FIG. The rotation of the relay lever 60 is performed by the fan-shaped gear portion 6
0b and the gear portion 51b are transmitted to the driver 51, which causes the driver 51 to rotate in the clockwise direction in FIG. By this rotation, the driver 51 closes the light blocking door 19 of the film cartridge 1.

When the engagement between the lock claw 53a and the engaging portion 50a is released, the opening / closing lid 50 is ready to be opened.
The opening / closing lid 50 is opened manually. As the opening / closing lid 50 is opened, the protruding arm portion 56 rotates about the shaft 49, and the distance between the guide pin 83 and the pin 58 changes from L ₂ to L ₁ . Since L ₂ <L ₁ , the string 85 is pulled downward,
As a result, the eject lever 70 is moved downward.
Simultaneously with this movement, the engaging protrusions 74 move downward, so that the film cartridge 1 is discharged from the cartridge chamber 32 to the outside with the engaging protrusions 74 abutting the corresponding end faces 13.

As described above, the camera 3 to which the present invention is applied
The film cartridge eject mechanism of No. 0 includes the protruding arm portion 56, the pin 58, the eject lever 70, and the guide pin 8
Since it is realized by a simple configuration in which only 1, 83, a string 85, etc. are provided, the space in the camera 30 required for the mechanism can be small and the manufacturing cost is low.

The string 85 can be made of not only nylon but also a material having low elasticity such as synthetic resin material, carbon material and metal material. The shape of the string 85 is not limited to the thin thread shape shown in FIGS. 1 and 2, and may be a tape shape.

In the above embodiment, the film cartridge is used as a film cartridge in US Pat.
Although the film cartridge of the type known from Japanese Patent No. 296,887 has been described, it goes without saying that the present invention can be applied to a camera using a film cartridge of another type.

[0028]

As described above, according to the camera having the film cartridge ejecting mechanism of the present invention, the interlocking mechanism having the cord-like member whose one end is fixed to the eject lever and the other end is fixed to the opening / closing lid. Since the structure is provided, it is possible to provide a camera having a simple structure and a film cartridge ejecting mechanism that can be configured in a small space.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a camera provided with a film cartridge eject mechanism of the present invention.

FIG. 2 is a perspective view showing the main part in a state different from the state shown in FIG.

FIG. 3 is a vertical cross-sectional view of a camera including the film cartridge light-shielding door open / close detection device of the present invention.

FIG. 4 is a perspective external view of a film cartridge.

FIG. 5 is a perspective external view of the film cartridge of the same figure viewed from different angles.

[Explanation of symbols]

 1 Film Cartridge 3 Cartridge Outer Frame 11 Spool (Film Winding Spool) 17 Film Ejection / Inlet Opening 19 Light-shielding Door 19a Shaft 19b Key Groove 21 Hole 30 Camera 31 Spool Chamber 32 Cartridge Chamber 47 Loading Port 49 Shaft 50 Open / Close Lid 51 Driver 53 Interlocking arm 55 Opening / closing knob 56 Projecting arm portion 58 Pin 60 Relay lever 70 Eject lever 71 Guide elongated hole 72 73 Guide pin 75 pin 81 83 Guide pin 85 String (string-like member)

Claims (1)

[Claims] 1. A camera having a cartridge chamber in which a film cartridge having a film take-up spool inside is loaded along the axial direction of the film take-up spool, and an opening / closing lid for opening and closing one end of the cartridge chamber; An eject lever that is movably supported in a direction parallel to the axial direction of the chamber, and a part of the eject lever contacts the film cartridge in the cartridge chamber; when the opening / closing lid is opened, the eject lever is interlocked in the direction to push the film cartridge This interlocking mechanism has a cord-like member having one end fixed to the eject lever and the other end fixed to the opening / closing lid. Equipped camera.