JP2000162683A - Film unit with lens - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten winding operation time and the time taken from winding operation until photographing operation and to improve dustproof property and sandproof property by projecting the whole of a winding knob, except for the engaging shaft thereof from the upper surface or the lower surface of a unit main body. SOLUTION: A winding knob 16 is molded to be columnar, and the upper surface of the knob 16 is made a rugged surface so that a fingertip will not slide when photographer performs turning operation. Then, the side surface of the knob 16 is knurled so that the photographer can perform the turning operation by taking the knob with fingers, and gaps which dust or sand penetrates is reduced. Even if dust or sand penetrates, they are easily removed, because the knob 16 is detached from the unit main body. By knurling the circumference of the knob 16 and making the upper surface thereof the rugged surface, the turning operation of the knob 16 can be performed smoothly by using the flat part of the finger, so that a photographic film is wound for a long length by performing the turning operation once, and the windup time is made shorter than that in the conventional manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film unit with a lens, and more particularly to a winding mechanism.

[0002]

2. Description of the Related Art At present, a great number of types of cameras for photographing are sold according to their uses and functions. Recently, a film unit with a lens has been sold by the present applicant so that photographing can be easily enjoyed. A film unit with a lens is a unit body that incorporates a photographing mechanism such as a photographing lens and a shutter device, in which an unexposed photographic film is built in advance.
Photographs can be taken immediately on the spot where they are purchased, and they are generally used widely because they can be sent to a photo lab even after they have been taken.

FIG. 6 is a perspective view of a conventional film unit with a lens as viewed from the rear side. A counter window 3 for displaying the number of shots and a shutter button 4 are provided on the upper surface of the unit body 2, and a winding knob 5 for winding the film is provided on the back surface of the unit body 2 with a winding knob opening 5a.
The finder eyepiece window 6 is provided partially exposed from the
An opening 7 is provided near the finder eyepiece window.

At the time of photographing, the photographer first turns the winding knob 5
The photo film is wound up by repeating the rotating operation several times. When the photographic film is transported in the winding direction by this winding, the sprocket constituting the film winding stopping mechanism rotates following the movement of the photographic film. When the sprocket is rotated by a predetermined amount, the film winding stopping mechanism locks the rotation of the sprocket and the rotation of the winding knob 5. As a result, the photographic film is wound up by one frame, and an unexposed photographic frame is newly set. The photographer senses that the rotation of the winding knob 5 is locked, and can move on to the next photographing operation.

[0005]

However, since the winding knob 5 is partially exposed from the back to the side of the unit body 2, only a small number of photographic films can be wound by a single rotation operation of the winding knob 5. Thus, the photographer had to repeat the turning operation of the winding knob 5 many times. In addition, when photographing at the seaside or the like is intended, dust and sand are likely to enter through a gap such as the hoisting knob opening 5a of the unit body 2, and it is difficult to take measures against dust and sand from the structure, which hinders the film winding mechanism. There was something.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a new winding mechanism shortens the winding operation time and the time from the winding operation to the photographing operation.
It is an object of the present invention to provide a film unit with a lens having excellent dustproof and sandproof properties.

[0007]

In order to achieve the above object, an unexposed photographic film is loaded in advance, and an exposed photographing frame of the photographic film is turned into a cartridge by rotating a winding knob directly connected to a spool shaft of the cartridge. In the film unit with a lens equipped with a film winding mechanism for storing unexposed shooting frames
An engaging shaft formed on the lower surface of the winding knob is fitted through the opening formed through the upper surface or lower surface of the unit body with the spool shaft from the outside, and the engaging shaft of the winding knob is removed. The whole was arranged so as to protrude from the upper or lower surface of the unit main body.

Further, a knurl is formed on the circumference which is the side surface of the knurl so that the knurl can be wound up with the flat of a finger when the winding knob is turned, and the upper surface is made uneven. The position of the shutter button is provided on the upper surface of the unit body near the outside of the outer diameter of the winding knob so that the operation can be shifted from the winding operation to the shooting operation continuously.

[0009]

FIG. 1 is an external perspective view showing a film unit with a lens according to the present invention. The lens-fitted film unit 9 includes a unit main body 10 in which a film and a cartridge are pre-installed, and a built-in photographing mechanism including a shutter and the like, and a label 11 for exterior covering a central portion of the unit main body 10. A photographing lens 12, a finder objective window 13, a strobe light emitting unit 14, and a charging operation button 15 are provided on the front side of the unit body 10, and a winding knob 16 for winding up a film is exposed on the upper surface of the unit body 10, and a shutter is provided. A button 17 and a counter window 18 are provided. Further, on the back side of the unit body 10, a finder eyepiece window 19 is provided at a position facing the finder objective window 13, and an opening 20 is provided near the finder eyepiece window 19 (see FIG. 2).

As shown in FIG. 2, a unit main body 10 includes a front cover 21 and a rear cover 22 which constitute the front and rear surfaces of the film unit 9 with a lens, a main body base 23, an exposure unit 24, and a strobe light which are covered by these covers. And a unit 25. The front cover 21 has openings 26a for exposing the photographing lens 12, the strobe light emitting portion 14, the winding knob 16, and the shutter button 17, respectively.
26d, charge operation button 15, finder objective window 13
Etc. are formed.

The rear cover 22 includes a finder eyepiece window 19.
Is formed, and a finder image can be observed through a finder optical system attached to the exposure unit 24. An opening 20 is provided in the vicinity of the finder eyepiece window 19, through which the photographer can visually recognize the charging display light.

A film roll chamber 27 and a cartridge chamber 28 are formed in the main body base 23, and a film roll 27a and a cartridge 28a are loaded into each of them at the time of manufacture. The engagement shaft 16a of the hoisting knob 16 together with the ratchet plate 41 penetrates through an opening 26c formed in the front cover 21 into a cylindrical penetration hole 28a formed to protrude above the cartridge chamber 28. The protruding winding shaft is the spool shaft 2 of the cartridge 28a.
8c.

The exposure unit 24 includes a base member 29,
Various mechanisms necessary for photographing, such as a photographing lens 12, a finder objective lens 30, a shutter mechanism, a film winding mechanism, and a counter mechanism, are assembled, and the upper part thereof is covered with a top plate 31. Assembled by

The strobe unit 25 includes a printed circuit board 3
2 that holds a battery 36 in addition to circuit components such as a strobe light emitting portion 14 including a strobe discharge tube and the like, a main capacitor 33, a neon tube 34, a synchro switch 35, and a charging operation of the front cover 21. When the button 15 is pressed, the contact piece 37 comes into contact with a predetermined contact to start charging the main capacitor 33, and the neon tube 34 is turned on. When the main capacitor 33 is charged to a specified level, the lit neon tube 34 blinks, and the photographer senses the completion of the charging by this blinking and performs a shutter release. 35 is turned on, and strobe light is emitted from the strobe light emitting section 14 toward the subject.

FIG. 3 is an exploded view showing a main part of the film winding mechanism. The main part of the film winding mechanism includes the winding knob 16, the ratchet plate 41, the front cover 21, the cartridge chamber 28, and the cartridge 28a.
The hoisting knob 16 is formed in a cylindrical shape, and the upper surface of the hoisting knob 16 has an uneven surface so that the fingertip does not slip when the photographer rotates. Also, the winding knob 16
The engagement shaft 16a projects from the lower surface of the engagement shaft 16a.
A protruding portion 16b is formed on the side surface of "a". further,
Winding knob 1 so that the photographer can pinch and rotate the finger
A knurl is provided on the side surface of 6.

On the upper surface of the front cover 21, a winding knob 16 is provided.
An opening 26c through which the engaging shaft 16a is inserted is formed. On the upper surface of the cartridge chamber 28, a hollow cylindrical projection 40 is formed. On the upper surface, an inner diameter opening 28b of the projection 40 is located at a position facing the opening 26c of the front cover 21. The engaging shaft 16a has the opening 2
6c.

Below the opening 26c of the front cover 21, there is provided a ratchet plate 41 having a large number of ratchet teeth 41a provided on the outer periphery. The ratchet plate 41 prevents the rotation of the hoisting knob 16 in the reverse direction by the abutment of the ratchet teeth 41a against the reverse rotation preventing claw (not shown). When 16 a penetrates, it rotates together with the hoisting knob 16.

Further, on the upper surface of the cartridge 28a,
When the cartridge 28a is stored in the cartridge chamber 28, the spool shaft 28c is positioned at a position facing the inner diameter opening 28b.
A notch 28 having the same shape as the protrusion 16b formed on the side surface of the engagement shaft 16a is formed on the circumferential wall thereof.
d is formed, and the engagement shaft 16a of the hoisting knob 16 is axially fitted to the spool shaft 28c via the opening 26c and the inner diameter opening 28b.

When the protrusion 16b is fitted into the notch 28d, the rotation of the winding knob 16 is transmitted to the spool shaft 28c of the cartridge 28a, and the spool shaft 28c is rotated.
8a.

The operation of the above configuration will be described. When the photographer intends to take a picture, the photographer holds the film unit 9 with a lens in a position as shown in FIG. 4 and turns the winding knob 16 projecting from the upper surface of the film unit 9 with the lens with his index finger to rotate the photographic film. Roll up. In the present invention, since the entire winding knob 16 is exposed from the upper surface of the film unit 9 with the lens, the rotation knob is rotated one time as compared with the conventional winding knob 16 which is only partially exposed from the back of the film unit with the lens. You can wind up long-distance photographic film by operation.

When the photographic film is transported in the winding direction by this winding, the sprocket of the film winding mechanism provided in the exposure unit 24 rotates following the movement of the photographic film. When the sprocket is rotated by a predetermined amount, the film winding mechanism locks the rotation of the sprocket and the rotation of the winding knob. As a result, one photo film
The frame is wound up by the frame and an unexposed shooting frame is set. Further, the shutter mechanism is charged while the sprocket is rotating.

After charging the shutter, the photographer shifts the finger on the winding knob 16 to the shutter button 17 and
One photographing operation is completed by pressing the shutter button to release the shutter. When taking a picture continuously, the film is wound up by turning the winding knob 16, but the time required for shutter charge is short because the photo film wound up by one turning operation is long, and the second shot is immediately taken. Can be done.

Also, when photographing at the seaside or the like is intended,
Since there is no conventional wind-up knob opening 5a on the rear side, the intrusion of sand and dust is reduced, and even if dust and sand enter, the dust and sand can be easily opened by removing the wind-up knob from the film unit with the lens. 26c and the like.

Note that, as shown in FIG.
May be arranged below the lens-fitted film unit 52. Then, the photographer presses the shutter button 53 with the index finger.
Is operated, and the thumb is used to put a finger on the winding knob 51 provided on the lower surface.

[0025]

According to the present invention, the engaging shaft formed on the lower surface of the winding knob is fitted through the opening formed through the upper or lower surface of the unit body with the spool shaft from the outside, and the engaging shaft of the winding knob is removed. By arranging the entire unit so as to protrude from the upper or lower surface of the unit body, the gap into which dust or sand enters is reduced, and even if dust or sand enters, the hoisting knob can be removed from the unit body, making it easy to remove dust and sand. Sand can be removed.

Also, the knurling is formed on the circumference which is the side surface of the hoisting knob protruding from the unit body, and the upper surface is made uneven so that the turning operation of the hoisting knob can be smoothly performed with the flat of a finger. Since the photographic film over a long distance can be wound up by one rotation operation, the winding time is reduced. In addition, since the position of the shutter button is provided near the outer diameter of the winding knob on the upper surface of the unit main body, the operation can be shifted from the film winding operation to the shutter operation continuously, and the necessary time from the winding operation to the photographing can be obtained. Time is reduced.

[Brief description of the drawings]

FIG. 1 is an external perspective view of a film unit with a lens according to the present invention.

FIG. 2 is an exploded perspective view of the lens-fitted film unit of the present invention.

FIG. 3 is an explanatory view of a main part of a film winding mechanism.

FIG. 4 is a diagram illustrating the use of the film unit with a lens according to the present invention.

FIG. 5 is an explanatory diagram showing another embodiment of the present invention.

FIG. 6 is an external perspective view of the back side of a conventional film unit with a lens.

[Explanation of symbols]

 10 Unit body 17 Shutter button 16 Winding knob 26c Opening 28 Cartridge chamber 28a Cartridge 28c Spool shaft

Claims (3)

[Claims] An unexposed photographic film is pre-loaded into a unit body provided with various photographing mechanisms, and an exposed photographic frame of the photographic film is stored in the cartridge by rotating a winding knob directly connected to a spool shaft of the cartridge. In the film unit with a lens provided with a film winding mechanism for setting an unexposed photographing frame, an engaging shaft formed on the lower surface of the winding knob is formed to penetrate the upper surface or the lower surface of the unit main body. A film unit with a lens, wherein the spool shaft is fitted to the spool shaft from the outside through an opening, and the hoisting knob excluding the engagement shaft is entirely protruded from an upper surface or a lower surface of the unit main body. 2. The roll-up knob according to claim 1, wherein a knurl is provided on a circumference which is a side surface of the knob and an unevenness is provided on an upper surface so that the roll-up knob can be wound up with a flat finger during a rotation operation. Film unit with lens. 3. The position of the shutter button is located near the outer diameter of the wind-up knob protruding from the upper surface of the unit main body so as to be able to continuously shift from the wind-up operation to the photographing operation. The film unit with a lens according to claim 1, wherein: