JPH09244113A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the dimension in a longitudinal direction of a camera smaller. SOLUTION: A gear fitting part 45 is formed in the space surrounded by a cartridge chamber 17 in which a film cartridge 15 is loaded in an axial direction, a bearing part 19 for pivotally supporting a bottom cover 9 and a lens barrel 8. A part of reduction gears for transmitting the rotation of a motor up to a driving shaft for driving a spool, in such a manner that speed is reduced is incorporated in the gear fitting part 45. Thus, the bearing part 19 and a required number of speed reduction gears are provided in the camera 2, without making the dimension in the longitudinal direction of the camera larger.

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 having a reduced longitudinal dimension.

[0002]

2. Description of the Related Art In a camera having a built-in winder for automatically winding up a photographic film every time one frame is taken, a motor for the winder is incorporated in a winding shaft of a film winding chamber to miniaturize the camera. The motor arranged in the winding shaft drives not only the winding shaft but also the drive shaft for rotating the spool of the cartridge. This drive shaft is provided in the patrone chamber where the patrone is loaded,
Rotation is decelerated and transmitted between the motor and the cartridge chamber by a plurality of reduction gears. Further, these gears are arranged on the bottom surface of the camera body in which various devices are incorporated and an exterior plate is attached to the outside in order to miniaturize the camera.

By the way, a new photo film and a cartridge, and an Advanced Photo System including a camera and various processing devices using them.
em (APS) has been proposed and announced. This APS compatible film cartridge stores all the photographic film in the cartridge body when not in use, and when loaded in a camera or the like, the tip of the photographic film is sent out from the film entrance / exit by the rotation of the spool. In this way, since the leader portion is not pulled out at the time of loading unlike the conventional 135 size cartridge, loading of the film cartridge into the camera is performed, for example, by inserting the film cartridge in the axial direction from the opening formed on the bottom side of the camera. The method is suitable.

[0004]

When the film cartridge is loaded into the camera from the bottom side in the axial direction, the lid member for opening and closing the opening of the cartridge chamber is provided on the bottom portion of the camera. Further, the bearing portion that pivotally supports the lid member needs to be provided in the camera body because of a problem in strength.
However, if the bearing portion of the lid member is provided on the bottom surface of the camera body, the space for providing the reduction gear is reduced. Therefore, in order to provide the required number of gears, the dimension of the camera in the longitudinal direction is set. There was a problem that it had to be large.

An object of the present invention is to solve the above problems, and an object thereof is to provide a camera into which a necessary reduction gear can be incorporated without increasing the size of the camera in the longitudinal direction.

[0006]

In order to solve the above-mentioned problems, the present invention provides a space defined by a cartridge chamber, a bearing for axially supporting a lid member, and a lens barrel. A part of the reduction gear is arranged.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows an example of a camera embodying the present invention. The camera 2 has a lens barrel 8 in which a taking lens 3 is incorporated in the center of the front surface.
Above the lens barrel 8, there is a finder 4, a sensor section 5 incorporating a distance measuring sensor and a photometric sensor,
The strobe light emitting section 6 is arranged. Also, camera 2
A shutter button 7 is arranged on the upper surface of the camera, and a power switch, a mode changeover switch, a zoom changeover switch and the like are provided on the rear surface of the camera 2 although not shown. The lens barrel 8 is retracted inside the camera 2 when the power switch is off, is extended to the front surface of the camera 2 when the power switch is turned on, and the extension amount is changed by operating the zoom changeover switch.

A bottom lid 9 which is a lid member for opening and closing the cartridge chamber in which the film cartridge is loaded is openably and closably attached to the bottom surface of the camera 2 for unlocking and opening the bottom lid 9. The operation switch 10 is provided on the side surface of the camera 2. In this camera 2, various mechanisms and devices such as a bottom cover 9 are incorporated in a camera body (not shown) and a film cartridge is loaded, and a front exterior plate 12 and a rear exterior plate 13 are provided on the front side and the back side of the camera body. Covered with.

FIG. 3 shows the camera body 14 from the bottom side. The camera body 14 has a cartridge chamber 17 having an opening 16 into which the film cartridge 15 is inserted in the axial direction, a lens barrel mounting portion 18 to which the lens barrel 8 is attached, and a bearing portion 19 that pivotally supports the bottom cover 9. And are integrally formed.

In the film cartridge 15, a spool 22 is rotatably housed in a cartridge body 21 made of plastic and having a substantially columnar shape, and the photographic film 24 is housed around the spool 22. A port portion 23 is projected from the cartridge main body 21, and a film door (not shown) through which the photographic film 24 comes in and goes out is formed in the port portion 23, and a light shielding lid 25 for opening and closing the film door is provided at the back of the film door. It is freely assembled. The film cartridge 15 is a spool 2
It has a function of sending out the photographic film 24 from the film entrance / exit by rotating 2 times.

A film receiving port 27 into which the photographic film 24 sent out from the film cartridge 15 is inserted is formed on the side wall of the cartridge chamber 17 facing the port portion 23. An aperture 28 for determining the exposure range of the photographic film 24 is arranged at a position facing the taking lens 3 at the back of the film receiving port 27, and at the back of the aperture 28, an exposed photographic film is not shown. A film winding chamber and the like for winding the film 24 into a roll are provided.

A drive shaft 30 for rotating the spool 22 of the film cartridge 15 in the film feeding direction and the winding direction is rotatably mounted on the upper portion of the cartridge chamber 17. A large-diameter drive gear 31 is integrally formed. Further, although not shown, a light-shielding lid drive mechanism for rotating the light-shielding lid 25 between open and closed positions is also incorporated in the upper surface of the cartridge chamber 17. The drive shaft 30 and the drive shaft of the light-shielding lid drive mechanism project into the cartridge chamber 17 and engage with the spool 22 and the light-shielding lid 25 of the loaded film cartridge 15.

The bearing portion 19 formed at one end of the opening 16 is inserted with the pin 34 in a state that the bearing portion 33 of the bottom lid 9 is sandwiched between the bearing portion 19 and the film cartridge 1.
The bottom lid 9 is rotatably held between an open position in which the opening 16 is opened so that 0 can be loaded and unloaded and a closed position in which the opening 16 is light-tightly closed. On the inner surface side of the bottom lid 22,
A light-shielding groove 35 is formed to cover the projecting opening 16 and a support protrusion 36 is provided at the center of the light-shielding groove 35 to enter and support the spool 22 of the film cartridge 15. A hook-shaped engaged projection 37 is provided on the inner surface side of the other side of the bottom lid 9. The engaged projection 37 is engaged with an engaging claw integrally formed with the operation switch 10 when the bottom lid 9 is closed, and locks the bottom lid 9 in the closed position.

A motor serving as a drive source for the winder of the camera 2 is incorporated in the winding shaft of the film winding chamber, and a drive switching mechanism 38 for switching the rotation of the motor between the winding shaft side and the driving shaft 30 side. It is incorporated in the bottom surface of the camera body 14. Reference numeral 39 is an output gear for the drive switching mechanism 38 to output the rotation of the motor toward the drive shaft 30,
The driving force of the output gear 39 is generated by the four reduction gears 41, 42, 43, 44 mounted on the bottom surface of the camera body 14.
And two reduction gears 4 incorporated in the gear mounting portion 45.
6 and 47, and two reduction gears 48 and 49 mounted on the upper surface of the cartridge chamber 17 are transmitted to the drive gear 31.

As shown in FIGS. 1A and 1B, the gear mounting portion 45 includes a bearing portion 19 that pivotally supports the bottom cover 9, a lens barrel mounting portion 18 to which the lens barrel 8 is mounted, It is formed in a space surrounded by the cartridge chamber 17. The gear mounting portion 45 is a wasteful space in which no parts are originally incorporated, but by incorporating the reduction gears 46 and 47, a space for installing the bearing portion 19 of the bottom lid 9 can be secured, Further, therefore, it is not necessary to increase the size of the camera 2 in the longitudinal direction.

The two reduction gears 46 and 47 that are rotatably accommodated in the gear mounting portion 45 are such that the reduction gear 46 meshes with the reduction gear 44 in the gear mounting portion 45, and the reduction gear 47 includes the shaft 5.
0 is integrated with the reduction gear 48 on the upper surface of the cartridge chamber 17. When the output gear 39 is rotated counterclockwise in the drawing, the drive gear 31 is also rotated in the film feeding direction counterclockwise in the drawing, and the photographic film 24 is removed from the cartridge main body 21 from the film entrance / exit of the port 23. Send out. When the output gear 39 is rotated clockwise in the figure, the drive gear 31 is rotated clockwise to rewind the photographic film 24 into the cartridge body 21.

The gear mounting portion 45 includes a reduction gear 46,
The cover 52 is attached to the gear mounting portion 45 after the 47 is assembled.
The support piece 53, which is attached so as to close the cover 52 and is integrally formed with the cover 52, enters the gear mounting portion 45 and supports the reduction gears 46 and 47.
There is no possibility that the gear shifts in the gear mounting portion 45 and the mesh is disengaged.

In the above embodiment, the camera in which the film cartridge is loaded from the bottom side has been described as an example.
The present invention can also be used in a camera in which a film cartridge is axially loaded from the upper surface side. In this case,
The lid member is arranged on the upper surface of the camera, and a part of the reduction gear is arranged in a space surrounded by the bearing portion of the lid member, the lens barrel, and the cartridge chamber. Further, although the camera in which the film cartridge is used has been described, it can be used in a camera in which a 135-size photographic film cartridge is loaded.

[0019]

As described above, the camera of the present invention is
Since a part of the reduction gear is arranged in a space formed by the lens barrel and the bearing portion that pivotally supports the cartridge chamber and the lid member, which is an wasted space originally,
A space for forming the bearing portion of the lid member can be formed on the bottom surface of the camera body without increasing the size of the camera in the longitudinal direction.

[Brief description of drawings]

FIG. 1 is a front view and a bottom view of a camera showing a position of a gear mounting portion.

FIG. 2 is a perspective view showing the appearance of a camera embodying the present invention.

FIG. 3 is a perspective view showing a bottom surface side of the camera body.

[Explanation of symbols]

 2 camera 8 lens barrel 9 bottom lid 15 film cartridge 17 cartridge chamber 18 lens barrel mounting portion 19 bearing portion 30 drive shaft 45 gear mounting portion 46, 47 reduction gear

Claims (1)

[Claims] 1. A cartridge chamber having an opening into which a film cartridge containing all of the photographic film up to the leading end is loaded in the axial direction, and a lid member axially attached to the edge of the opening so as to open and close the cartridge chamber, A drive shaft that engages with a spool of a film cartridge loaded in the cartridge chamber, a motor that drives the drive shaft, a plurality of reduction gears that reduce the rotation of the motor and transmit the rotation to the drive shaft, and a lens barrel. A camera including: a cartridge chamber; and a bearing portion that pivotally supports the lid member,
A camera in which a part of a reduction gear is arranged in a space surrounded by a lens barrel.