JP2002122927A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a camera constituted so that a cartridge is easily loaded and film is smoothly fed from the loaded film cassette, and the camera is miniaturized. SOLUTION: In this camera, the film cassette 95 is loaded in a film cassette chamber 2a in a direction going along a winding shaft 95f in a state where a film leader part 96b is wound. In loading the film cassette, the leader part 96b is inserted along the outer periphery of a film guide 13 arranged in the chamber 2a. After loading the film cassette, the leader part 96b is temporarily rewound in the film cassette. Thereafter, the leader part 96b which is fed toward a spool chamber 2b by the rotation of a sprocket 51 and reaches the chamber 2b is wound round a spool 14, whereby loading the film is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure and layout around a patrone room of a camera capable of loading a patrone with an exposed film leader.

[0002]

2. Description of the Related Art Hitherto, Japanese Patent Laid-Open No. 6-235 has proposed a structure around a patrone (cartridge) chamber of a camera.
Japanese Patent Application Publication No. 962 discloses a camera to which a type of cartridge in which a film reader portion is entirely housed in a cartridge body is applied. In the above camera, the film delivery surface at the film delivery outlet of the cartridge is inclined at a predetermined angle with respect to the film pressure plate surface. By arranging in this way, there is no useless space between the cartridge chamber and the side wall inside the camera main body surrounding the photographing optical path, and the lateral width of the camera can be reduced.

[0003]

However, the cartridge disclosed in the above-mentioned Japanese Patent Application Laid-Open No. 6-235962 does not apply to a cartridge (patrone) of the type to which the film leader portion of the present invention is exposed. However, the above-described conventional camera employs a structure in which the film is sent out in an inclined state as described above, and is directly introduced into the film rail surface. Therefore, there was a risk that the film would be damaged on the rail surface. In addition, the film may be loose near the rail surface introduction portion, and it may be difficult to maintain the flatness of the film. In order to prevent the film from being loosened in the vicinity of the rail surface introduction portion, it was necessary to separately incorporate a film regulating means.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and in a camera capable of loading a patrone having an exposed film leader, the patrone can be easily loaded, and the film from the loaded patrone can be easily loaded. It is an object of the present invention to provide a camera that can smoothly send out images and that can be downsized.

[0005]

According to a first aspect of the present invention, there is provided a camera, comprising: a lens barrel; and a camera disposed on a side of the lens barrel and in a plane perpendicular to the optical axis of the lens barrel. The axis is arranged in parallel, a patrone chamber for loading the film exposed from the patrone while being wound around the patrone, a film rail surface provided behind the lens barrel, a film pressure plate, the film rail surface, and An introduction port for introducing the film between the film pressure plate, a lens barrel, the patrone chamber, and provided in a space surrounded by a line connecting the film outlet of the patrone to the introduction port, the patrone; A feeding mechanism for feeding the film exposed from the inlet into the introduction port, and the film of the patrone loaded in the patrone chamber is provided. Via the feed mechanism from the film feed opening is fed to the inlet, is sent to the spool of the camera through the film rail surface.

According to a second aspect of the present invention, in the camera according to the first aspect, the space has a substantially triangular prism shape.

A camera according to a third aspect of the present invention is the camera according to the first aspect, wherein the position of the film outlet of the patrone is regulated in the space to set the position of the patrone in the rotation direction. A member is arranged.

According to a fourth aspect of the present invention, in the camera according to the first aspect, the delivery mechanism has a sprocket or a roller for delivering the film.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a camera showing an embodiment of the present invention as viewed from the bottom side, and shows a state in which a patrone chamber lid is opened and a patrone is being loaded. FIG. 2 is a bottom view of the camera, showing a state where the patrone chamber lid is opened, and showing a patrone loaded state by a two-dot chain line.

FIGS. 3A and 3B and FIGS.
FIG. 13B is a cross-sectional view taken along the line EE of FIG. 12, which will be described later. FIG. 3A shows an initial state of insertion of the film leader, FIG. 3B shows a state where the film leader abuts on the sprocket claw, and FIG.
FIG. 4B shows a state in which the sprocket pawl is pressed by the film leader section, and FIG. 4B shows a state in which the sprocket pawl is engaged with the perforation of the film leader section and the insertion of the film leader is completed.

FIG. 5 is an exploded perspective view of a film feeding sprocket unit incorporated in the camera. FIG.
FIG. 3 is a perspective view showing a part around a light shielding unit constituting a patrone display unit in a patrone room of the camera. FIG. 7 is an exploded perspective view of a light blocking portion of the patrone display unit of the camera. FIGS. 8 and 9 are cross-sectional views taken along the line CC in FIG. 15 or the cross section along the line DD in FIG. 16, which will be described later. FIG. FIG. 8 shows an initial state of patrone loading, and FIG. 9 shows a state of patrone loading completion.

FIGS. 10A, 10B, 11A,
FIGS. 10B and 10C are perspective views showing a process of loading a patrone into the patrone chamber in the camera, and FIG.
(A) shows the state before loading the patrone, and FIG. 10 (B)
11 (A) and 11 (B) show the state in which the cartridge is being loaded, and FIG. 11 (C) shows the state in which the cartridge has been loaded.

FIGS. 12 to 14 are partially enlarged cross-sectional views of the film guide section and the film leader section around the film introduction port after the patrone is loaded in the camera, as viewed from the top side of the camera. FIG. 13 shows a state in which the film leader is still exposed immediately after the cartridge is loaded, and FIG. 13 shows a state in which the tip of the film leader is rewound to a predetermined position in front of the L sensor.
Reference numeral 4 indicates a state in which the film reader has been fed into a gap (film feeding path) between the pressure plate and the mask plate.

FIGS. 15 to 17 are cross-sectional views showing the film feeding state before and after the patrone is loaded in the camera, as viewed from the top side of the camera. FIG. 15 shows the state before the patrone is loaded, and FIG. FIG. 17 shows a state in which the film leader is wound around, and FIG. 17 shows a state in which the leading end of the film leader reaches the spool chamber and is wound around the spool. FIG. 18 is a perspective view of the configuration of the film feed drive system of the camera, as viewed from the top side of the camera.

FIG. 1 is a perspective view of the camera 1 of the present embodiment.
As shown in the bottom view of FIG. 2, the camera has a camera body 2 and a camera exterior 3 that covers the camera body 2.

The camera body 2 mainly includes a photographing lens 5.
, A finder optical system (not shown), a film guide 13, which is a film guide member and a patrone rotation direction attitude setting member, and a feeding mechanism supported by the film guide 13. The sprocket portion 51 and the light shielding portion 16 of the patrone display portion (FIG. 6)
Rail) for guiding the film (not shown)
Also, a mask plate 61 (see FIG. 15) having an aperture opening 61a, a pressure plate 62 (see FIG. 15), a film feed drive system 20 (see FIG. 18), and the like are incorporated.

Further, the camera body 2 has a patrone chamber 2a in which a patrone 95 can be loaded, and a spool chamber 2b in which a spool 14 for winding up a film is installed.
In addition, a display hole 2h is provided at a position facing the patrone display window 11.

The camera exterior 3 mainly includes a finder eyepiece window 6, a release button (not shown), a rewind button (not shown), and a power switch button (not shown). Patrone chamber lid 7, patrone display opening 3b
Patrone display window 11 and lid opening knob 1
0 and the like are provided.

The patrone 95 includes a patrone winding shaft (winding shaft) 95f for winding and storing a 135 type film (JIS standard) 96, a patrone outer cylinder 95e,
It has an outlet 95a having a film outlet 95b, a long hub 95c, and a short hub 95d. The patrone 95 can be loaded from the long hub 95c side in a state where a film leader portion 96b (described later) is wound around the outer cylinder 95e with respect to the patrone chamber 2a. Note that the loading posture is such that the cartridge winding shaft 95f is along the Y0 direction (described later).

The film 96 is provided with a perforation 96a over its entire length.
It is wound around 5f and held. The film leader 96b, which is the end of the winding of the film 96, is exposed to the outside from the patrone outlet 95b when the patrone is loaded. The leading end of the film leader portion 96b is referred to as a leading end 96c, and the width end surface of the long hub side film is referred to as a width end surface 96d.

The patrone chamber 2a contains a patrone 95.
, A wall 2 d as a first outlet wall, and a wall 2 e as a second outlet wall.
It has a film guide slope 2c which is formed at the entrance of the patrone chamber 2a and serves as a first guide portion of the film leader 96a when the patrone is loaded, and a patrone chamber bottom face 2k. The patrone chamber 2a has a cylindrical inner wall surface 2a.
m and a triangular prism-shaped space composed of wall surfaces 2d and 2e. The wall surface 2d is a surface inclined toward the optical axis O, and the wall surface 2e is provided along the side surface of the lens barrel 4 and is substantially parallel to the optical axis O.

The cylindrical inner wall surface 2m is parallel to a plane perpendicular to the optical axis O of the photographing lens 5 (the camera body 2).
(Up-down direction) is a part of the cylindrical surface with the Y0 axis which is an axis parallel to the center axis as the center axis. The cylindrical surface is a patrone 9
5, the film insertion gap Sa is larger than the outer cylinder 95e.
(The space for the film reader) is a cylindrical surface that can be inserted while the film reader 96b is wound around the cartridge outer cylinder 95e.

The wall surfaces 2d and 2e are substantially V-shaped walls continuous with the inner wall surface 2m, and are surfaces parallel to the Y0 direction.

When the cartridge 95 is loaded, the film guide slope 2c is positioned at the width end 96d of the film leader 96a.
Is an inclined surface provided so as to be easily slid toward the cylindrical inner wall surface 2m and the wall surfaces 2d and 2e.
It is formed by a mortar-shaped curved surface (concave conical curved surface) that is inclined toward the cartridge center bottom surface 2k toward the 0 axis. The range in which the inclined surface 2c is provided starts approximately from the end of the cylindrical inner wall surface 2m on the front side of the camera body, reaches the wall surface 2e, and reaches the wall surface 2d.

On the bottom 2k of the patrone chamber, a fork 12 serving as a rewinding mechanism for rotating the patrone winding shaft 95f and a patrone take-out urging spring 19 for urging the loaded patrone 95 in the take-out direction are provided. It is arranged at the position on the Y0 axis. The fork 12 is provided with a long hub 95c of the loaded cartridge 95.
Can be engaged with the spline portion of

Further, a film guide 13 as a second film guide and a sprocket 51 as a film delivery mechanism are arranged on the patrone chamber bottom surface 2k and inside the wall surfaces 2d and 2m. .

The patrone chamber lid 7 is rotatably supported on the camera exterior 3 via a support shaft 8. On the patrone chamber side of the patrone chamber lid 7, a patrone hub supporting projection 7a that fits into the patrone short hub 95d and rotatably supports the patrone 95, and a lid closing claw 7b are provided.

The lid closing claw 7b is inserted into the claw opening 2f of the camera body in the closed state of the patrone chamber lid 7 and engages with the locking claw 9 in the camera body to maintain the closed state of the patrone chamber lid 7. I do. When the lid closing claw 7b engages with the locking claw 9, the CVSW (lid switch) 84 of the lid detecting means disposed near the locking claw is turned on (see FIG. 19). In the lid closed state, the outer periphery of the patrone chamber lid 7 is fitted into the lid opening 3a of the camera exterior 3, and the patrone chamber 2a is kept light-tight.

In order to open the patrone chamber lid 7, the engagement of the locking claws 9 is released by sliding the lid opening knob 10 provided on the side of the camera exterior 3, and the patrone chamber lid 7 is opened. be able to. When the lid is opened,
The loaded patrone 95 is moved upward by the urging spring 19 so that the patrone 95 can be easily taken out.

The film guide 13 and the film delivery sprocket portion 51 extend in a direction substantially parallel to the Y0 axis in a substantially triangular prism-shaped space surrounded by the outer periphery of the cylindrical inner wall surface 2m, the wall surface 2d, and the wall surface 2e. It is arranged in an upright posture. The film guide 13 has an inclined surface 13a which forms a substantially conical surface at the upper portion as described later, and its vertex 13b is positioned at an optical axis A with respect to a straight line A parallel to the optical axis O as shown in FIG. It is located on a straight line B forming an angle θ0 closer to O.

The sprocket portion 51 is rotatably supported inside the film guide 13 as described later, and is positioned with a film insertion gap Sc with respect to the surface of the pressure plate 62 on the cartridge chamber side.

As shown in the sectional view of FIG. 3A, the film guide 13 is fixed to the bottom 2k of the patrone chamber 2a, and has a substantially conical tip with a vertex 13b on the opening side of the patrone chamber 2a. It has a surface 13a. Further, as shown in the cross-sectional view of FIG. 12, the film insertion gap Sc () faces the wall surface 2d of the patrone chamber and the front end portion of the pressure plate 62 (a straight line connecting the film projecting port 95b of the loading patrone and the film introduction port Sd). Space for film reader)
And an outer wall surface 13h, which is a second side surface forming a film insertion gap Sb (space for a film reader) facing the wall surface 2e of the patrone chamber, and an outer wall surface 13g forming a film insertion gap Sb (space for a film reader). It has a cylindrical inner wall surface 13i facing the outer cylinder 95e, and a cutout portion (rotation restricting portion, posture setting portion) 13c facing the wall surface 2d of the patrone chamber.

The space portion (the space for the outlet) formed by the wall surface 2d of the patrone chamber and the cutout portion 13c includes:
Film feed port projection 95a of loaded patrone 95
The rotation of the cartridge 95 around the winding shaft 95f is restricted in the loaded state by the fitting of the protrusion 95a, and the loaded posture of the cartridge 95 is maintained. The film sending direction from the patrone sending port 95b is as follows.
Along the outer wall surface 13g of the film guide 13, it is inclined at a predetermined angle with respect to the pressure plate 62 toward the film introduction port Sd.

The patrone 95 has an outlet projection 95a.
The space defined by the patrone chamber wall surface 2d into which is inserted and the notch 13c is inclined by a predetermined angle with respect to a plane orthogonal to the optical axis O. Therefore, the occupied space in the left-right direction occupied by the patrone chamber 2a is reduced by the inclination.

The outer wall surface 13g of the film guide 13
13h side tip slope 13a is the patrone room slope 2
c and the film reader 96b of the patrone 95
It functions as a guide portion into the patrone chamber 2a at the time of insertion. Further, as shown in FIG. 13, the outer wall surface 13g guides the film leader portion 95b of the loading cartridge 95 from the film projecting port 95b to the film introducing port Sd (a gap formed by the pressure plate 62 and the mask plate 61). Function as

The cylindrical inner wall surface 1 of the film guide 13
The tip inclined surface 13a on the 3i side inserts the cartridge 95 into the space formed by the projection 95a of the cartridge 95, the outer cylinder 95e of the cartridge 95, and the film leader 96b wound around the outer cylinder. Patrone room 2a
It serves as a guide surface when loaded inside. Further, the cylindrical inner wall surface 13i functions as a positioning portion for the outer cylinder 95e of the loading cartridge 95.

On the other hand, as shown in FIG. 3A, a concave portion 13e for accommodating the sprocket portion 51 and a bearing portion 13 for supporting the sprocket shaft portion are provided inside the film guide 13.
d and an escape portion 13f for a sprocket claw are provided.

As shown in an exploded perspective view of FIG. 5, the sprocket portion 51 includes a sprocket drive shaft 53, a sprocket driven shaft 52, a sprocket cylinder 54, and a pawl spring 55.
And four sprocket claws 56.

The sprocket drive shaft 53 has a support shaft 53a fitted to the bearing 2h of the camera body 2, a sprocket gear 53d, and a sprocket cylinder projection 54b.
And a recess 53c of the claw spring 55
And a shaft portion 53e.

The sprocket driven shaft 52 has a support shaft 52 fitted to the bearing 13 d of the film guide 13.
a, a recess 52b fitted to the sprocket cylinder projection 54a
, A screw hole 52c, and a shaft portion 52d.

The sprocket cylinder 54 has an engagement projection 54b fitted into the recess 53b of the sprocket drive shaft and an engagement projection 54 fitted into the recess 52b of the sprocket driven shaft.
a, and a claw hole 5 into which the sprocket claw 56 is freely inserted and removed
4c.

The claw spring 55 has an arm portion 55c extending in the axial direction and having an elastically deformable spring function, a claw mounting hole 55b provided at the tip of the arm portion, and a screw insertion hole 55a. The claw spring 55 is fixed to the sprocket driven shaft 52 by a screw 57 in a screw hole 52c.

The sprocket claw 56 is provided with a pair of perforation engagement surfaces 56a on the left and right surfaces in the rotation direction, a pair of inclined surfaces 56b on the upper and lower surfaces in the axial direction, and a mounting pin portion 56c. This sprocket claw 56
Is fixed to the claw mounting hole 55b of the claw spring 55.

When the inclined surface 56b of the sprocket claw 56 is brought into contact with the film end surface or the axial direction by perforation and pressed, the claw spring 55 is elastically deformed via the claw 56. Due to the elastic deformation, the sprocket claw 56 retreats into the claw hole 54c of the sprocket cylinder, and the film end face or the perforation of the film can move on the sprocket cylinder. However, in a state in which the sprocket claw 56 is rotated around the axis while being fitted into the perforation 95a, the claw spring 55 is not deformed and the sprocket claw 56 does not retreat.

The sprocket drive shaft 53, the sprocket cylinder 54, and the sprocket driven shaft 52 to which the claw spring 55 is fixed are connected to the respective shaft portions 52d and 53e.
4 and press-fitted into each other or fixedly fitted with each other, or fitted with no gap and integrated. In the integrated state, the sprocket claw 56 is held in a state where the sprocket claw 56 projects from the claw hole 54c of the sprocket cylinder 54. The outer peripheral surface of the sprocket cylinder 54 is subjected to processing having a high light reflectance, and reflects the light from the L sensor 74 sufficiently.

The sprocket portion 51 having the above-described structure is rotatably supported and incorporated in the film guide 13 and the bearing portions 13d and 2h of the cartridge chamber bottom surface 2k as shown in the sectional view of FIG. In the assembled state, the outer periphery of the sprocket cylinder 54 is attached to the outer wall 1 of the film guide 13 as shown in the cross-sectional view of FIG.
It is arranged so that it may contact the extension surface of 3h and 13g.

The sprocket gear portion 53d of the sprocket portion 51 is meshed with a gear 37 of a feed drive system of the film feed drive system 20, which will be described later. Further, as shown in the cross-sectional view of FIG. 3, the pressing plate 62 is provided with a cutout portion 62 a in which a portion corresponding to the rotation locus of the sprocket claw 56 is cut out at a position facing the sprocket claw 56. further,
An L sensor 74, which is a PR (photoreflector) for detecting the position of the leading end 96c of the film reader, is provided above the notch 62a, and an opening 62b therefor. The L sensor 74 is provided while being supported by a flexible printed board 74a.

As shown in FIGS. 6 and 7, the light-shielding portion 16 is disposed inside the display hole 2h of the patrone chamber 2a.
The light-shielding member 17 is formed of a sponge material capable of elastic compression deformation, and the flexible sheet member 18 is formed of a thin-film member having good sliding properties.

The light shielding member 17 has an opening 17a at the center.
And upper and lower inclined surfaces 17c and 17d. The sheet member 18 has an opening 18a at the center. Both the openings 17a and 18a have inclined sides so that the opening widths 17b and 18b gradually become narrower toward the cartridge chamber bottom surface 2k. By reducing the opening width in the insertion direction in this way, when the patrone is compressed by the outer cylinder 95e when the patrone is inserted, the patrone 95 is compressed.
Is prevented from catching with the openings 17b, 18b.

On the other hand, the patrone display window 11 of the camera body
At the opposing position, as shown in the cross-sectional view of FIG. 8, a display hole 2h penetrating through the patrone indoor wall surface 2d is provided.
A concave portion 2i for mounting a light shielding member is provided on a wall surface 2d of the patrone room in the display hole 2h.

The light-shielding member 17 is fitted and mounted in the recess 2i.
A gap between the recesses 2j is provided, and the gap is
Is a relief part when compressed.

The sheet member 18 has a patrone insertion side end 18c adhered and fixed to the patrone room inner wall surface 2d, a central portion adhered to the light shielding member 17, and a patrone room bottom 2k.
The tip portion 18d on the side is attached in a state of being inserted into a clearance groove portion 2j provided in the bottom portion 2k in a non-adhered state. The light shielding member 17 is slightly movable downward when the cartridge 95 compresses the light shielding member 17 via the sheet member 18 in a state where the light shielding member 17 is not in contact with the concave portion 2i.

The mask plate 61 and the pressure plate 62 are arranged on the image plane side of the taking lens barrel 4 as shown in the sectional view of FIG. The mask plate 61 is provided with an aperture opening 61a. The gap between the mask plate 61 and the pressure plate 62 serves as a film feed path from the cartridge chamber 2a to the spool chamber 2b. An end of the film feeding path on the patrone chamber side serves as a film introduction port Sd.

An L sensor 74 of a PR (photoreflector), which is a film leading end detecting means, is disposed at a position facing the sprocket portion 51 of the pressure plate 62, and a film perforation 9 is provided at an end of the pressure plate 62 on the spool chamber 2b side.
A P (photo-reflector) P sensor 75 for detecting passage of 6a is provided.

The aperture 61 of the mask plate 61
A movable block 15 is provided at an end of the spool a on the side of the spool chamber 2b as shown in the sectional view of FIG. The movable block 15 is provided with a film reader 96b that is fed.
This is a guide means for preventing the tip 96c of the camera lens from getting caught in the lens barrel side, and is linked to the forward and backward movement of the taking lens barrel 4.

That is, when the lens barrel 4 is in the storage position (or the non-photographing position), the movable block 15 is located inside the aperture opening 61a of the mask plate 61 as shown in FIG. When the lens barrel 4 is extended over the lens barrel openings 2p and 3c to a photographable position, the lens barrel 4 is retracted outside the photographing optical path in conjunction with the movement.

The cartridge chamber 2a of the camera body 2 has a DX contact piece 7 formed of an electrical contact piece elastically deformable in the radial direction on a cylindrical inner wall surface 2m as shown in the sectional view of FIG.
When the cartridge 95 is loaded, the DX contact piece 73 comes into contact with the cartridge outer cylinder 95e, and D
It becomes possible to read the X code. DX contact piece 7
The output of No. 3 is also used as a patrone loading detection signal.

In the spool chamber 2b of the camera body 2, a rotatable film guide plate 64 biased toward the spool 14 by a weak biasing force is disposed. When the film 96 is fed into the spool chamber 2b, the film guide plate 64
It has the function of winding. The spool 14 has a plurality of claws 14a, hooks the film perforation 96a, and winds the film around the spool.

As shown in the perspective view of FIG. 18, the film feed drive system 20 includes a drive source including a drive motor 72, a switching drive system (switching mechanism) including a planetary gear mechanism such as a sun gear 25, and a fork. A rewinding drive system (rewinding mechanism) including a gear 30 and the like, and a one-way clutch 3
4, a feed drive system (feeding mechanism) including a sprocket gear 53d and the like, and a winding drive system (winding mechanism) including the spool gear 31.

The drive motor 72 has a motor shaft 21 protruding from both ends thereof, and a motor pinion 22 and an encoder plate 4 are provided at each of the shaft ends of the motor shaft 21.
2 is fixed. The rotation of the motor pinion 22 includes a gear 23, a large two-stage gear 24a, and a small gear 24b.
Is transmitted to the sun gear 25. The rotation of the encoder plate 42 is detected by an M sensor 76 composed of a photo interrupter (PI).

The planetary gear mechanism includes a sun gear 25, a carrier 26, and a planetary gear 27. Carrier 26
Is rotatably supported by the shaft of the sun gear 25, and the planetary gear 27 meshes with the sun gear 25 while being rotatably supported by the carrier 26. Therefore, when the sun gear 25 rotates in the + D2 direction, the carrier 2
6 also rotates in the + D2 direction.
Mesh on two sides. When the sun gear 25 rotates in the -D2 direction, the carrier 26 also rotates in the -D2 direction, so that the planet gear 27 meshes with the gear 28 side.

The rewinding drive system includes a gear 28, a gear 29, and a fork gear 30 supported by the fork 12. The rotation of the gear 28 is transmitted to the fork 12 via the gear 29.

The delivery drive system includes a one-way clutch drive side gear 33 meshing with the gear 32, a one-way clutch 34, a one-way clutch driven side gear 35,
It comprises a gear 36, a gear 37, and a sprocket gear 53d.

When the driving gear 33 rotates in the direction D5 (while the film is being fed by the sprocket portion 51), the one-way clutch 34 is engaged, and the rotation of the driving gear 33 is transmitted to the driven gear 35. The sprocket gear 53d is driven to rotate in the direction D6. If the sprocket gear 53d is driven to rotate at a higher speed and the driven gear 35 rotates relatively faster in the direction D5 than the drive gear 33 (the film is wound up by the spool 14), the one-way clutch 34 Are disconnected, and the driving gear 33 and the driven gear 3
5 rotate independently.

The hoisting drive system includes a gear 32, a two-stage large gear 39a and a small gear 39b, a gear 40, a gear 41, and a spool gear 31 provided on the spool 14.
Consists of The rotation of the gear 32 in the D4 direction is transmitted to the spool gear 31 via each gear.

In the above-described film feeding drive system 20, during the film rewind operation, the drive motor 72
It rotates clockwise (CW direction) to rotate the sun gear 25 of the planetary gear mechanism in the -D2 direction. Due to the rotation of the sun gear 25 in the -D2 direction, the planetary gear 27
And the fork gear 30 is rotationally driven in the direction D3 via the gear 28. The rotation of the fork gear 30 causes the winding shaft 95f of the loaded cartridge 95 to rotate.
Is rotated in the direction D3, and the film 96 is rewound into the cartridge.

During the film feeding operation, the drive motor 72 rotates in the counterclockwise direction (CCW direction) to rotate the sun gear 25 of the planetary gear mechanism in the + D2 direction. Due to the rotation of the sun gear 25 in the + D2 direction, the planetary gear 27 meshes with the gear 32 (second state), and the gear 3
2, the drive gear 33 is driven to rotate in the direction D5. The rotation is transmitted to the driven gear 35 via the one-way clutch 34, and the sprocket gear 53d
It is driven to rotate in the direction. The sprocket 51 is rotated in the direction D6 by the rotation of the sprocket gear 53d, and the film 96 is sent out to the spool 14 via the sprocket claw 56 and the perforation 96a. At this time, the spool gear 31 is simultaneously rotating in the direction D7.

During the film winding operation, the drive motor 72 rotates in the counterclockwise direction (CCW direction) to rotate the sun gear 25 of the planetary gear mechanism in the + D2 direction. Due to the rotation of the sun gear 25 in the + D2 direction, the planetary gear 27 meshes with the gear 32 (second state), and the gear 3
2 rotates in the D4 direction. The rotation of the gear 32 is transmitted to the spool gear 31, and the spool 14 is driven to rotate in the direction D7.

At this time, if the leader portion 96b of the film 96 reaches the spool 14 by the above-described film feeding operation, the film 96 is wound up by the spool 14 rotating in the D7 direction.

The gear driving system is set so that the speed at which the film 96 is wound by the spool 14 at the time of film winding is higher than the speed of the sprocket portion 51 driven via the one-way clutch 34. The sprocket portion 51 is driven to rotate in the direction D6 by the film 96 wound up through the perforations 96a.

At this time, the rotational speed of the one-way clutch driven gear 35 in the D5 direction is higher than the rotational speed of the one-way clutch driving gear 33 driven via the gear 32 in the D5 direction. Therefore, the connection of the one-way clutch 34 is released, and the delivery drive system including the sprocket portion 51 is driven via the film without any trouble.

Next, the configuration of the electric control system of the camera 1 of this embodiment will be described with reference to the block diagram of the electric control system shown in FIG. The camera 1 according to the present embodiment includes a CPU 71 which is a control circuit for controlling the entire camera, a drive motor 72 for driving film feed and for moving the lens barrel forward and backward, and detects a rotation amount of the drive motor 72. An M sensor 76 which is a PI (photo interrupter), an L sensor 74 which is a PR (photo reflector) of a film leading end detecting means for detecting the position of the leading end 96c of the film reader,
A DX contact 73 which is a sensor for reading the DX code of the loaded patrone 95 and also functions as a patrone loading detecting means, and a PR (photo reflector) for detecting the feed amount of the film 96 by passing through the perforation 96a. A motor rotation detection circuit 78 which takes in the outputs of the P sensor 75 and M sensor 76 and outputs a motor rotation amount signal to the CPU 71, and a patrone which takes in the output from the DX contact piece 73 and outputs a patrone loading signal to the CPU 71. The detection circuit 79 and the output of the L sensor 74 are fetched and the signal for detecting the position of the leading end of the film reader is sent to the CPU
1, a film reader detection circuit 80 for outputting to the CPU 1 and an output of the P sensor 75, and a film movement signal
A perforation detection circuit 81 for outputting to C
Drive motor 72 based on the film feed output of PU 71
And a film feeding circuit 77 for driving the same.

Further, the camera 1 includes a power switch (PWSW) 83 as a power switch, a CVSW (lid switch) 84 as lid detecting means for detecting a closed state of the patrone chamber lid, and a one-stage release button. 1RSW (release first-stage switch) 85 turned on by eye operation and 2RS for starting exposure turned on by second-stage operation of release button
W (second release switch) 86 and RWSW (rewind switch) 8 for instructing rewinding of the film halfway
7, a switch input circuit 82 for taking in the output of the switch group and outputting it to the CPU 71, a display circuit 88 for taking in display information by the CPU 71, a liquid crystal display 89 driven by the display circuit 88 and displaying the display information, An LED display unit 90 and a nonvolatile memory 91 are built in.

The CPU 71 has a ROM 71a for storing a processing program for controlling each control element in the camera, and an RA for storing data for photographing.
M71b, timer circuit 71c, counter circuit 71d
And an A / D converter circuit 71e.

The display circuit 88 fetches an information display signal such as shooting mode information, film counter information, date information and the like and a strobe state information display signal by the CPU 71, and supplies the information display signal to the liquid crystal display section 89 and the LED display section 90. Display information.

The nonvolatile memory 91 stores various photographing conditions and setting information for setting photographing conditions. For example, even when batteries are replaced, the original photographing conditions can be reset.

Next, in the camera of the present embodiment having the above-described configuration, the patrone 95 with the film leader 96b exposed is loaded into the patrone chamber 2a. After the loading, the film is automatically loaded. That is, the film leader 96b is once rewound into the patrone, leaving only the leading end thereof. And
The film leader 96b is sent out toward the spool chamber 2b and wound up by the spool 14, and the loading of the film is completed. Note that these auto-loading processing operations are all controlled by the CPU 71 as a control circuit.

In the following, the loading operation and the film loading operation will be described with reference to the flow chart of the auto loading process shown in FIG. 20 and the time chart shown in FIG. 21.
The film loading process will be described with reference to the partial perspective views of FIGS. 12 to 14 and the sectional views of FIGS. 15 to 17.

When the patrone 95 is loaded, the power switch PWSW83 is turned on, and the patrone chamber cover 7 of the camera exterior 3 is opened by operating the cover opening knob 10 with the camera bottom side facing upward. At this time, the L sensor 74 projects light to the sprocket cylinder 54 and receives the reflected light, and becomes H. As shown in FIGS. 10A and 10B, the cartridge is inserted into the cartridge chamber 2a from the long hub 95 side along the Y0 axis. The cartridge 95 is inserted toward the cartridge chamber 2a while sliding the film width end 96d of the film reader 96b on the inclined film guide surface 2c as shown in FIG. 10B. Note that the leading end 96c of the film leader 96b on the patrone outer cylinder needs to be positioned within the range of the allowable range mark 2g on the camera body 2 (see FIG. 2).

Further, the patrone 95 is placed in the patrone room 2
11B, the film leader 96b is moved by the film guide inclined surface 2c and / or the inclined surface 13 of the film guide 13 as shown in FIGS.
a, the gap Sc between the pressure plate 62 and the outer wall surface 13g of the film guide 13 and the patrone room wall surface 2
e and the gap Sb between the outer wall surface 13h of the film outer casing 13 and the inner wall surface 2m of the patrone chamber cylinder and the patrone outer cylinder 9
5e is inserted into the gap Sa. The film reader 95 is inserted into the gap Sc between the pressure plate 62 and the outer wall surface 13g of the film guide 13.
The state where b is inserted is shown in the cross-sectional view of FIG.

At the same time, the outlet 95a of the patrone 95
Is inserted while being guided between the patrone chamber wall surface 2d and the notch portion 13c of the film guide portion 13.

When the patrone chamber lid 7 is closed, the pawl 7b is locked by the locking member 9, and the lid is closed. The patrone 95 is positioned on the short hub 95d side of the patrone with the hub supporting projection 7a of the patrone chamber lid, and is simultaneously inserted to a predetermined loading position on the bottom of the patrone chamber.

When the patrone chamber lid 7 is in the closed state as described above, a lid closed signal is output from the lid closed state detecting CVSW 84, and the automatic loading process of FIG. 20 to be described later is started.

In the above-described patrone insertion process, FIG.
(B) As shown in FIG.
When 6d comes into contact with the inclined surface 56b of the sprocket claw 56 of the sprocket portion 51, the claw spring 55 is elastically deformed, and the sprocket claw 56 is retracted into the sprocket cylinder 54 as shown in FIG. The portion 96b can move on the sprocket cylinder 54.

Then, the patrone 95 is placed in the patrone room 2
4A, the perforations 96a of the film 96 are fitted into the patrone claws 56 as shown in FIGS. 4B, 11C, 12 and the like. The patrone long hub 95c engages with the fork 12.

However, if the perforation 96a and the sprocket claw 56 are displaced depending on the position of the film 96 in the feeding direction, the sprocket claw 56 will not be fitted. Of course, in this case, the film leader 96b will be fitted during the initial rewinding process. Then, it is engaged. Similarly fork 1
Depending on the rotational position of 2, the cartridge length hub 95c and the fork 12 are not necessarily engaged, but in this case, they are engaged during the initial rewinding process of the film leader 96b, which will be described later, and are engaged.

In the above-described loaded state, the patrone 95 has its delivery port projection 95a fitted between the patrone chamber wall surface 2d and the cut-out portion 13c of the film guide portion 13, so that rotation around the winding shaft 95f is regulated. The film leader 96b is held in a state of being inserted into the gap Sc between the pressure plate 62, the gap Sb between the cartridge chamber wall 2e, and the gap Sa between the cartridge chamber cylinder inner wall 2m.

In the course of loading the patrone 95, as shown in the sectional views of FIGS.
e moves toward the patrone chamber bottom surface 2k while sliding on the sheet 18 of the light shielding unit 16, and compresses and deforms the light shielding member 17 via the sheet 18. Therefore, the light from the patrone display window 11 is completely blocked by the light blocking member 17, so that no outside light leaks into the patrone chamber 2.

Since the light shielding member 17 moves on the sheet 18 attached to the slope of the light shielding member 17 in the compression process while compressing the light shielding member 17, the leading end 18d of the sheet 18 is moved along the direction of the bottom of the cartridge chamber into the sheet escape groove. 2j will be guided and moved.

As described above, when the patrone chamber lid 7 is closed after the patrone 95 is inserted, the CVS for detecting the lid closed state is detected.
A cover closing signal is output from W84, and the signal is
The interrupt is taken in 1 and the interrupt is applied, and the auto-loading process of FIG. 20 is started.

First, in step S1, the loaded state of the cartridge is checked. That is, the signal from the DX contact piece 73 is taken in by the patrone detection circuit 79, and the loading detection output is taken into the CPU 71 to confirm the loading of the patrone 95. If the patrone chamber lid 7 is closed with no patrone loaded, for example, if the patrone chamber is not completely loaded yet, the process jumps to step 2 and the HALT state, that is, the CP
U71 is maintained in a stopped power saving state as a process of entering a sleep state.

In practice, as soon as the patrone chamber lid 7 is closed, the patrone 95 is fully loaded and a loading detection output is output, so that the process immediately proceeds to step S3. On the time chart of FIG.
It is assumed that the loading detection signal is output substantially simultaneously at the elapsed time t1 when the drive motor 7 is closed.
2 is started in the CW direction. In addition,
Elapsed time t before time t1 on the time chart
At 0, since the L sensor 74 detects the film reader section 96b with the insertion of the cartridge 95, the detection output is an L (low level) signal.

At step S3, the reverse rotation (CW direction rotation) of the drive motor 72 is started. With this rotation, the planetary gear 27 of the planetary gear mechanism meshes with the gear 28 and drives the fork gear 30 to rotate in the direction D3. The rotation shaft 9 of the patrone 95 is rotated by the rotation of the fork gear 30 in the direction D3.
5f rotates in the rewinding direction, and starts rewinding the exposed film leader portion 96b in the inside of the cartridge 95. During the rewinding, the sprocket portion 51 is freely rotatable, and is driven to rotate by the film perforation 96a. Therefore, the movements of these drive systems are not hindered, and the stop of the movement of the film and the interruption of the perforation do not occur.

In the above-mentioned rewinding process, the leading end 96c of the film reader portion is shown at the elapsed time t2 on the time chart of FIG.
Indicates that an H (high level) signal is output from the L sensor 74 when the signal reaches the L sensor 74 position.

In step S4, the change in the output of the L sensor 74 causes the film edge (film leading end 96
c) When the arrival is detected, the process proceeds to step S5, where the counter 71d starts counting the number of output pulses of the M sensor 76, and checks that the output is equal to the predetermined number Pa of pulses.

If the output of the predetermined output pulse number Pa is detected in step S5, the process proceeds to step S6. That is, after reaching the film edge, the film is wrapped by a predetermined amount.
When the film leader 96b is exposed substantially straight from the film outlet 95b as shown in the cross-sectional view of FIG. 7 (the sprocket claw 56 maintains the engaged state with the perforation 96a even in this state). S6
To change the rotation direction of the drive motor 72 to the normal rotation direction (CCW
Direction).

In the time chart of FIG. 21, the output pulse number Pa is detected at the elapsed time t3, and the rotation direction of the drive motor 72 is switched to the CCW direction as described later.

In step S6, the drive motor 72
Is forward rotation (CC) as shown in the time chart of FIG.
(W direction rotation). That C
The planetary gear 27 of the planetary gear mechanism with the rotation in the CW direction
Is switched to a state of meshing with the gear 32 side. Gear 32
Rotates in the direction D4, and the sprocket gear 53d is rotationally driven in the direction D6 via the one-way clutch 34.
The rotation of the gear 32 in the direction D4 is also transmitted to the spool gear 31, and the spool 14 is simultaneously driven to rotate in the direction D7.

When the sprocket gear 53d rotates in the direction D6, the sprocket portion 51 rotates in the same direction, and the film leader 96b exposed from the film feed port 95b is moved from the state shown in FIG. The film is fed toward the intervening film inlet Sd. On the way, the output of the L sensor 74 is switched from H to L as shown in the time chart of FIG. 21 because the leading end 96c of the film passes.

As the rotation of the drive motor 72 continues in the CCW direction, the leading end 96c of the film leader 96b passes through the film feeding path between the pressure plate 62 and the mask plate 61 as shown in the sectional view of FIG.

Thereafter, when the leading end 96c of the film leader reaches the spool chamber 2b, the film 96 is wound around the spool 14 as shown in the sectional view of FIG. become. The film feeding speed by the spool 14 is set faster than the speed at which the sprocket 51 is driven via the one-way clutch 32 as described above. Therefore, the film is wound up with the one-way clutch 32 disconnected.

After the film leader 96b reaches the position of the P sensor 75 on the spool chamber side in the film feeding process, a perforation passing pulse signal is output from the P sensor 75, and the counter 71d starts counting the number of pulses. Is done.

In step S7, the number of perforation passing pulses is checked. When the film 96 is wound around the spool 14 by a predetermined amount and the number of pulses passing through the perforation reaches the predetermined number of pulses Pb, the first frame of the film 96 is set and the automatic loading of the film 96 is terminated. And the drive motor 72
Is stopped, and this routine ends.

The time chart of FIG. 21 shows that the predetermined number of pulses Pb is reached at the elapsed time t4, and the autoloading is completed.

When the photographing of all the frames of the loaded patrone 95 is completed, or when the RWSW 87 instructs the midway rewinding, the driving motor 72 is driven to rotate in the CW direction, and the above-described rewinding state is obtained.
6 is rewound into the cartridge 95.

When the patrone chamber lid 7 is opened by operating the lid release button 10, the patrone take-out urging spring 1 is opened.
With the urging force of No. 9, the patrone 95 jumps out to a position where it can be taken out to the patrone chamber opening side, so that it can be easily taken out. At this time, the film reader section 96b
Are completely entangled in the patrone 95, and the sprocket claws 56 and the perforations 96a are disengaged from each other. Therefore, there is no problem in taking out the patrone 95 from the patrone chamber 2a.

For example, when the patrone 95 before use is once loaded into the patrone chamber 2a and is taken out before performing auto-loading, even if the perforation 96a is engaged with the sprocket claw 56 at the time of taking out, the perforation When 96a moves in the axial direction, the inclined surface 56b of the sprocket claw is pressed to retract the sprocket claw 56 inward, and the engaged state is released, so that the cartridge 95 can be taken out without any problem.

According to the camera of the present embodiment described above, when the patrone 95 is loaded, the patrone chamber 2 is wound with the film reader section 96b wound around the patrone.
It can be loaded simply by dropping it into a. When the cartridge is loaded, the film leader portion 96b is securely inserted into the inner wall of the cartridge chamber through the wall of the film guide 13. The film guide 13 is provided with a sprocket portion 51 of a feeding mechanism.
After the patrone is loaded, the rotation of the sprocket 51 allows the film leader 96b to be smoothly fed from the film feed port to the film inlet.

In the above-mentioned patrone chamber 2a, a space portion into which the delivery port projection 95a of the patrone 95 fits is:
It is inclined by a predetermined angle with respect to a plane orthogonal to the optical axis O. Therefore, the space occupied by the patrone chamber 2a in the left-right direction (the camera width direction) is reduced by the amount of the inclination, and the camera can be downsized.

In the camera of the above-described embodiment, the sprocket portion 51 using the sprocket claw 56 is incorporated as a delivery mechanism. However, a mechanism incorporating a pressure roller may be incorporated in place of the delivery mechanism. is there. In this case, it is necessary to retract the pressing roller at the width end face of the film reader when the film reader is inserted, or to retract the pressing roller by opening the patrone chamber lid.

[0111]

As described above, according to the present invention, in a camera capable of loading a patrone having an exposed film leader portion, the patrone can be easily loaded, and the film can be smoothly fed from the loaded patrone. Further, it is possible to provide a camera that can be downsized.

[Brief description of the drawings]

FIG. 1 is a perspective view of a camera according to an embodiment of the present invention as viewed from a bottom surface side.

FIG. 2 is a bottom view of the camera of the embodiment, showing a state where a patrone chamber lid is opened.

FIG. 3 is a cross-sectional view around a film guide portion and a film feeding sprocket portion of the camera according to the embodiment, showing a process of inserting a film leader portion when a patrone is loaded, and FIG. FIG. 3B shows an initial state of insertion, and FIG. 3B shows a state in which the film leader abuts on a sprocket claw.

FIG. 4 is a cross-sectional view around a film guide portion and a film feeding sprocket portion of the camera according to the embodiment, showing a process of inserting a film leader portion when a patrone is loaded, and FIG. 4B shows a state where the sprocket claw is pressed, and FIG. 4B shows a state where the sprocket claw is engaged with the perforation of the film leader portion and the insertion of the film leader is completed.

FIG. 5 is an exploded perspective view of a film sending sprocket unit incorporated in the camera of the embodiment.

FIG. 6 is an exemplary perspective view showing the vicinity of a light shielding unit constituting a patrone display unit in the patrone room of the camera according to the embodiment;

FIG. 7 is an exploded perspective view of a light blocking portion of the patrone display unit of the camera according to the embodiment.

FIG. 8 is a longitudinal sectional view of the camera according to the embodiment,
The loading initial state at the time of loading a patrone into a patrone chamber is shown.

FIG. 9 is a longitudinal sectional view of the camera according to the embodiment,
The state where the patrone is loaded in the patrone chamber is shown.

10 is a perspective view showing a process of loading a patrone into the patrone chamber in the camera according to the embodiment, FIG. 10 (A) shows a state before the patrone is loaded, and FIG. 10 (B) shows a state before the patrone is loaded. The state in the middle of is shown.

11A and 11B are perspective views showing a process of loading a patrone into the patrone chamber in the camera of the embodiment, and FIGS. 11A and 11B show a state in which the patrone is being loaded; FIG. C) shows the state of loading the patrone.

FIG. 12 is a partially enlarged cross-sectional view of the film guide portion and the film introduction opening around the film introduction port as viewed from the top of the camera in the camera according to the embodiment, and the film leader portion is still exposed immediately after the patrone is loaded. Indicates a state in which

FIG. 13 is a partially enlarged cross-sectional view of the camera of the above-described embodiment, as viewed from the top side of the camera around the film guide portion and the film introduction port after the patrone is loaded, and the tip of the film leader portion is a predetermined position in front of the L sensor This shows a state in which it has been rewound to the position.

FIG. 14 is a partially enlarged cross-sectional view of the camera of the above-described embodiment viewed from the top side of the camera around the film guide portion and the film introduction port after the patrone is loaded, and the film leader is provided with a gap between the pressure plate and the mask plate. (Feeding path).

FIG. 15 is a cross-sectional view of the camera of the embodiment as viewed from the top side of the camera, and shows a state before loading a patrone.

FIG. 16 is a cross-sectional view of the camera according to the embodiment as viewed from the top side of the camera, and shows a state in which a film reader is wound after a patrone is loaded.

FIG. 17 is a cross-sectional view of the camera according to the embodiment as viewed from the top side of the camera, and shows a state in which a film reader unit is sent out and wound around a spool after a patrone is loaded.

FIG. 18 is a perspective view of the configuration of a film feeding drive system of the camera according to the embodiment, as viewed from the top side of the camera.

FIG. 19 is a block diagram of an electric control system of the camera according to the embodiment.

FIG. 20 is a flowchart of a film loading process in the camera of the embodiment.

FIG. 21 is a time chart in a film loading process in the camera of the embodiment.

[Explanation of symbols]

 2a: patrone chamber 4: lens barrel 13: film guide (posture setting member) 51: sprocket portion (delivery mechanism) 61: mask plate (film rail surface) 62: pressure plate (film pressure plate) Sd: … Film inlet

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G03B 17/28 G03B 17/28 Z 17/30 17/30 (72) Inventor Shogo Katagiri Shibuya-ku, Tokyo 2-43-2 Hatagaya F-term (reference) in Olympus Optical Co., Ltd. 2H020 AA07 AB03 CA07 DB01 DD06 DD08 EA03 EA04 2H100 AA26 AA71

Claims (4)

[Claims] 1. A lens barrel, and a film disposed on a side of the lens barrel and having its axis parallel to a plane perpendicular to the optical axis of the lens barrel. A patrone chamber to be loaded while being wound around the patrone, a film rail surface provided behind the lens barrel, a film pressure plate, and an introduction port for introducing the film between the film rail surface and the film pressure plate; The lens barrel, the patrone chamber, and a film that is provided in a space surrounded by a line connecting the film feed port of the patrone to the inlet, and feeds the film exposed from the patrone to the inlet. And a delivery mechanism for the camera. 2. The camera according to claim 1, wherein the space has a substantially triangular prism shape. 3. The camera according to claim 1, wherein a posture setting member for restricting a position of a film feed port of the patrone and setting a posture of the patrone in a rotation direction is disposed in the space. . 4. The camera according to claim 1, wherein the feeding mechanism has a sprocket or a roller for feeding the film.