JPS5868730A - Easy loading camera having improved film leader guide - Google Patents

Abstract

PURPOSE:To facilitate loading of a patrone by chamfering the edge of a camera body and providing a perforation engaged claw which is not protruded from the outer surface of a film leader guide member. CONSTITUTION:A patrone P is inserted with its hollow part engaged with a projection 5b of the loading chamber 5 and a film leader F is dropped into the gap of inner and outer guide members 14, 15. The edge 14a of the member 14 is chamfered, and the perforation engaged claw 19a of a film feeding device 19 is formed not to protrude to rear side of the camera from the outer surface alpha of the member 14 to prevent catching of the film leader. When the film leader is pulled out so long that it crosses the winding chamber 10, the part beyond the chamber is cut by film cutters 12, 13 when the rear cover 4 is closed.

Description

[Detailed description of the invention] At present, the film is widely used (35m/m
This invention relates to a simple loading camera that is improved so that it is easy to load a batrone for size film.

Conventionally, various cameras have been provided that simplify cartridge loading and film winding operations. For example, Japanese Patent Application Laid-Open No. 55-14.3549 discloses a simple loading camera in which one bottom surface of a cartridge loading chamber is opened and a cartridge is loaded in the axial direction through this opening.

In this easily loaded camera, the cartridge is loaded into a batrone storage body that is formed to protrude from the camera body, and when the cartridge is integrated with the camera body after loading the cartridge, the film leader The tip is cut by a cutter.

However, as mentioned above, if the part that accommodates the cartridge is not fixed within the camera body but is formed to move relative to the camera body, of course, in addition to the cartridge storage body, there will also be an opening/closing cover that locks the cartridge. The number of moving parts increases, making the camera structure more complex.

In view of the above circumstances, the applicant has already obtained a ML brown-loaded camera with a simple structure and has filed a patent application (the applicant's
Patent application (5)).

Kono's easy-to-load camera is the perfect companion for your Patrone! In a camera configured to be loaded in the 11 direction, a member for guiding the cartridge loading chamber and the film leader is formed within the camera body, and a cutter means is provided on the opposite side of the loading chamber across the exposure opening. The cartridge is installed from the bottom of the camera.

SUMMARY OF THE INVENTION An object of the present invention is to improve the film league guide section in the above-mentioned simple loading camera so that the film league can be smoothly set at a predetermined feeding position when loading a cartridge.

The 111j easy-loading camera of the present invention, which has an improved film leader design section, has the following features in the above-mentioned easy-loading camera:
At least 181≦ of the edge portion on the camera body side facing the b+KW− side surface of the film league that is moved toward the top surface of the camera body is chamfered in a cross section perpendicular to the longitudinal direction of the camera body, and It is characterized in that the perforation engaging claw of the film feeding means provided on the back [rn] is formed so as not to protrude beyond the outer surface of the film league guide member provided on the back side to the rear of the camera. be.

In the simple loading camera of the present invention, the edge of the rear side of the camera body is connected to 11V as described above, so that when the cartridge is loaded, the perforations of the film are removed. The cartridge will not get caught on these edges, and cartridge loading and unloading will be carried out smoothly. Also, 3 of the camera body
- The film feeding means provided on the back side is formed so that its perforation engaging claws do not protrude beyond the outer surface of the film league guide member provided on the back side, so when loading or unloading the cartridge, this The film is also prevented from being caught by the perforation engaging claws.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a simple loading camera l according to an embodiment of the present invention.
It is a perspective view showing the view from the bottom side of the camera with the back cover open, and Fig. 2 is a partially cutaway view of the same simple loading camera to show details of the back of the camera body near the exposure opening. It is something. In FIG. 1, the symbol P indicates a conventional 35 m/m size batrone loaded into the camera 1. This cartridge P includes a cylindrical cartridge main body P1, a cartridge shaft P2. and patrone body L
'Protrudes slightly in the tangential direction or approximately tangential direction from +
4- Consists of a film outlet P3. A film leader F is drawn out in advance from a drawer opening P3 of the cartridge P (the length varies depending on the film manufacturer).

Camera 1, lens ■, the center of the camera (the structure is 11
It consists of a camera body 2 with a closed position, and a back cover 4 which is pivoted near one corner of the camera body 2 by means of a hinge 3 so as to be able to open and close in the direction of the arrow. camera body 2
A cartridge loading chamber 5 consisting of a roughly cylindrical space is provided on the right side in the figure, that is, at a position that is on the left side of the photographer when the camera 1 is supported in the shooting posture. There is. This B) Rone loading chamber 5 is open to one side 6 of the camera body 2. Further, its circumferential surface is not completely closed, but is provided with a slit 8 that opens toward the rear surface of the camera body 2 in 7 directions. An exposure opening 9 is provided on the back surface 7 of the camera body 2, and a winding chamber 10 is formed on the opposite side of the exposure opening 9 from the cartridge loading chamber. In the winding chamber 0, there is provided a film winding shaft 11 equipped with a known automatic film winding mechanism (not shown). In addition, at the position covering this drinking chamber 10, there is a winding
A fixed blade 12 extending over the entire height of 10 is provided on the inner surface of the back cover 4, and when the back cover 4 is closed, the fixed blade 1 shown in h is provided.
A movable blade 13 that rubs against the blade 2 to form a cutter is fixed. A portion of the back surface 7 of the camera body 2 that is continuous with the bottom surface 6 is an inner guide member 14 whose upper and lower portions are chamfered as shown in the cross-sectional shape in FIG. A slight gap is provided between the inner guide member 14 and the exposure dose [
19) is located at the bottom edge of the camera (tm 1).
5 a is -4-oriented (1111'% edge 1 of inner material 14
．． An outer guide member 15 is provided which is substantially aligned with 4a. This outer guide member 15 has an opening 151) in the center.
In this opening 15b, a film pressure plate 17 supported by three resilient support pieces 16a, 1.6b, and 16c integrally formed with the outer (1411''4 inner member 15) is disposed. The film pressure plate 17 has a recess 1.7a in the center on the top side of the camera (lower side in the figure).
The protrusion 18 provided below the exposure opening 9 on the back surface 7 of the camera body 2 in the figure should fit into this recess 17a. On the right-L side of the exposure opening 9 in the figure, a film feeding device 19 having a barfontion engaging claw 19a is provided. 1 on the back 7 near the cartridge loading chamber 5
'*,'' - Near the center in the lower direction, there is a tongue upper edge defining member 20, and below the tongue upper edge defining member 20 in the figure, a position defining release member 21 protrudes toward the outer guide member 15. There is. The functions of these members will be described in detail below.

,'-g: In addition to the above-mentioned white movable blade 13 on the inward side of the 4, there is an elastic part (2) made of spring steel etc. at a position ii which comes into contact with the film pressure plate 17 when the back cover 4 is closed. The pressure plate pressing member 22 consisting of A, and the position regulation release member 21 marked 11
A protrusion 2; 3 is provided at a position where it abuts. Further, at a position closer to the bottom surface of the camera than the protrusion 23, an arm-shaped filter lower edge defining member 24 made of a rigid material is fixed. The back cover 11 protects the back surface of the camera body 2 by engaging a retaining portion (not shown) with a lock claw 26 operated by a slide button 25 provided on the bottom surface 6 of the camera body 2. Maintain a closed state and track.

Hereinafter, the operation of the simple camera according to the present embodiment having the above structure will be explained in detail. Patrone loading chamber 5
The slit 8 extends substantially tangentially to the cylindrical contour of the loading chamber and is provided so as to be continuous with the gap between the inner guide member 14 and the outer guide member 150, thus forming the cartridge loading chamber 5. A protrusion 17i (5b) is formed on the peripheral wall. Therefore, the diagonal portion formed by the film outlet P3 of the batten 1-P and the main body P1 is the protrusion 51 formed by the slit 8. ), the cartridge is loaded only when it is engaged with the
Therefore, the opening of the cartridge P is maintained in the correct direction.

An inner guide member 14 extending half a line from the film focal plane at the time of starvation extends in the direction of the chamber 10 from the projection part 5b, and this inner guide member 14 is connected to the outer guide member 15. A gap extending in the longitudinal direction of the camera is formed between them. When the cartridge P is loaded, even if the film leader F is wrapped around the outer circumferential surface of the cartridge P due to the sono-curling characteristic, the recessed portion of the cartridge P engages with the protrusion 51). Since the film leader F is inserted into the cartridge loading chamber 5 in the state shown in FIG. The core portion is successively extended in the longitudinal direction of the camera and dropped into the gap between the two guide members. (Thus, the inspection of Patrone P's device can be carried out easily.

Here, as shown in the figure, the bottom surface 6 of the portion forming the protrusion 5b is formed so as to gradually become higher toward the tip side of the protrusion 51). The edge 14a of the inner guide member 14, which is continuous with the edge 5a on the slit 8 side, is formed almost horizontally and gradually becomes lower toward the left in the figure. It can be smoothly extended along the edges 5a, 14a. Moreover, as the cross-sectional shape of this edge 14a is shown in FIG. However, since it is located above when the camera is in use, the perforation p (so-called) and the perforation p will not get caught. Furthermore, since the lower side edge 141) of the inner guide member 140 is rounded, the film leader F
The lower gf2 and perforation p are the side edges], 4
There is no chance of getting caught by b. As shown in FIG. 3, the above-described removal process is also performed on the perforation engaging claw 19a of the film feeding device 19, and the film leader F is pulled to the perforation engaging claw 19a. It is designed to be prevented from getting caught. Such chamfering is limited to the inner guide member 14 and the barflation engaging claw 19a described above.
Film Lee p-I” when loading and unloading the cartridge.
It is effective if it is applied to all edge portions facing each other. Note that, in addition to rounding as described above, this cutting process may also be a process of cutting the edge 813 linearly so as to shave it off.

In addition, the film feeding device w] 9 has its perforation engaging claw] 9 a, inner (Ullft inner
Since it is formed so that it does not protrude to the rear of the camera beyond the internal and external surfaces (6th surface in Fig. 3), the perforation p of the film leader F is protected when loading or unloading the cartridge.
The upper 0I11 edge f+ and the lower edge f2 are not caught by the half olation engaging claw 19a.

On the other hand, the film pressure plate 17 disposed inside the outer guide member 15 on the back side of the film leader has an inner surface that is connected to the outer guide member 15.
Since the film leader F is arranged so as to be aligned with the inner surface of the outer guide member 151+il, the film leader F will not be caught by this outer guide member 151+il.

The lower surface 18a (upper surface in the figure) of the protrusion 18 that has entered the recess 17a of the film pressure plate 17 is connected to the upper surface of the film (
Since the film leader F inserted between the inner guide member 14 and the outer guide member 15 is set in a position where it comes into contact with gf+ to keep the film in the correct feeding position, even if the film leader F is inserted between the inner guide member 14 and the outer guide member 15, Even if the protruding portion 18 is pulled out from the outlet P3 at an angle downward in the drawing, the protruding portion 18 will not fall above the lower surface 18a of the camera. Note that this protrusion 18
, the tip surface 181 facing the outer III M inner member 15)
is extended beyond the inner surface of the film pressure plate 17 or to a position that is aligned with the inner surface of the film pressure plate 17, so that the film leader F will not pass through either of the protrusion 18 or the film pressure plate 17, and the above-mentioned The upper edge f+ of the film leader F, which is pushed in from the north in the figure while tilted as shown in FIG. As explained above, the self-protruding portion 18 is
It acts as a defining member that defines the upper side position of the camera of the film leader F.
In addition to the protruding portion 18 as described above, the I-edge defining member can also be formed from, for example, a bottle planted on the back surface 7 of the camera body 2.

After the cartridge P is loaded into the cartridge loading chamber 5 as described above and the film leader F is extended, the front cover 4 is closed. Here, film leader F for general film
has been pulled out from the cartridge P to such an extent that the tip is located between the inner member 14 and the outer guide member 15, so when the film is fed as will be explained later, the tip of the film leader F The film enters the winding chamber 10 due to its own curling behavior, and is wound around the upper film shaft 11 by an automatic film winding mechanism. However, as mentioned above, the films of one film manufacturer are
Film leader F has been pulled out for quite a long time, so
The tip of the film leader F extends outward beyond the winding chamber 10. However, the tip of the film leader beyond the winding chamber 10 is cut by the fixed blade 12 and the movable blade 13 that rub against each other when the back cover 4 is closed. The tip of F enters into volume 1'-rK10 in the same way as in general film,
It can now be captured by the automatic winding mechanism described above. The fixed blade 12 and movable blade 13, which function in this manner, do not cut the high-quality film IJ-dat when a general film is used. Note that in this embodiment, the fixed blade 1
Although the movable blade 2 and the movable blade 13 are fixed completely independently of each other, they may be pivoted to each other like scissors, for example, so that they also function as support means for the back cover 4.

As mentioned above, the upper side 4df1 of the film leader F is the protrusion 1.
8, even if the film leader or the cartridge P is tilted downward in the drawing, the film leader 1)s can be maintained in its normal feeding position.
Opposite (The film leader 1 is removed from the drawer port P3 as shown in the figure.)
- If the film leader lower edge defining member 24 is fixed to the inner surface of the back cover 4 and passes through the gap 27 when the back cover 4 is closed, the lower edge defining member 24 of the film leader
This film leader F is pushed down in the figure by hitting the regular edge f2, and set to the feeding position. The film leader lower edge defining portion (A24) is provided at a position such that it contacts the lower edge f2 of the film leader F near the outlet P3 of the cartridge P, so that the waist of the film leader P is not bent. The film leader lower edge defining member 24 is pushed down completely without any problem.
15- is formed into a long arm shape as shown in the figure, so that the film leader F can still move freely before it is pressed by the film pressure plate 17 (described later) or by the cutter described above. When it is in the easy state, it comes into contact with the film leader Fl, and the film leader 12 can be easily moved.

Among the films currently on the market, the amount by which the film leader is pulled out is so small that almost the tongue at the tip of the film leader is pulled out from the cartridge. When such a film is used, the upper edge f+ of the film leader F does not reach the aforementioned protrusion 18. Therefore, when the film leader F is tilted downward in the figure, this tilt cannot be corrected by the projection 18. However, in this embodiment, the above-mentioned tongue upper edge defining member 20 allows the above-mentioned short film leader F
The downward tilt in the figure has been corrected. The tongue upper edge defining portion 16--(20) and its surrounding mechanism will be explained below.
The figure shows the mechanism around the tongue upper edge defining member 20. The tongue upper edge defining part A20 and the position defining release member 21 are provided on a single 1-shaped movable arm 28. This movable arm 28 has a slide hole 29 extending in the left-right direction in the figure, and the two
It is supported by a book pin 30 and is movable in the left and right directions in the figure. A protrusion 31 is provided on the upper part of the movable arm 28, and a spring 32 is hung on the protrusion HB 31 for biasing the movable arm 28 to the right in the figure, that is, to the back of the camera. A cartridge position detection member 3 is located on the right side of the downward protrusion 33 provided at the left end of the movable arm 28 in the figure.
A contact portion 35 provided at one end of 4 can make contact. The cartridge position detection member 34 is connected to the pin 36 by the pin 36.
It is rotatably supported with 1 lill, and is hung on a pin 37 at the base of the abutment part 35.
8 in the clockwise direction in the figure, centering on the pin 13G.
It is crowded. The biasing force of this spring 38 is the same as that of the spring 3
thicker than the biasing force of No. 2 (in the state where the protrusion 33 is in contact with the contact portion 35, the above-mentioned movable arm),
28 cannot move to the right in the figure. The lower part of the cartridge position detection member 34 is obliquely inserted into the cartridge loading chamber 5 as shown in the figure. When a cartridge is loaded into the cartridge loading chamber 5, the cartridge position detection member 34
is pushed by the end of the cartridge and rotates clockwise in the figure against the biasing force of the spring 38. Then, the contact portion 35 of the cartridge position detection member 34 separates from the protrusion 33 to the right in the figure, and the movable arm 28 moves to the right in the figure by the biasing force of the spring 32. Therefore, the tongue upper edge defining member 20 comes to protrude VCC between the back surface 7 of the camera body 2 and the outer guide member 15, as shown by the dotted line in the figure. This tongue upper edge defining member 20 is set at a position where its upper end surface 20a is aligned with the notch side edge h (see FIG. 1) of the tongue at the tip of the film leader F in the normal feeding position.
If the short film leader extended through the slit 8 is tilted downward in the figure from the outlet P3, the upper end surface 20a abuts against the notch (I111 edge f3) to correct this tilt. After that, when the back cover 4 of the camera is closed, the protrusion 2 provided on the inner surface of the back cover 4 will open.
3 pushes the position defining 1F removing member 21 to the left in FIG.

Therefore, the movable arm 28 moves to the left in the figure against the biasing force of the spring 32, and the tongue upper edge defining member 20 also withdraws from the position where it contacts the tongue of the film leader. Therefore, from this point on, the film leader will
The film can be fed without getting caught. Furthermore, as shown in FIG. 4, the cartridge position detection section H
'A' 34 is the upper end surface 20 of the tongue hIS upper line defining member 20
a slightly lower position (i.e. the top surface of the camera 11111
), and when a cartridge with a long film leader pulled out is loaded, the tongue upper line defining member 20 protrudes from the back surface 7 after the upper edge f1 of the film leader F has passed. I come to do it. Therefore, in such a case, the upper edge f1 of the film leader F is aligned with the upper end surface 20a of the tongue upper edge defining member 20.
There is no possibility that loading the cartridge will become impossible due to contact with the cartridge.

- When the back cover 4 is closed, the film leader F, which has been set in the normal feeding posture by the various position regulating means described above, is pushed by the pressure plate pressing member 22 fixed to the inner surface of the back cover 4. The film pressure plate 17 is pressed against the travel rails 39 above and below the exposure opening 9. Therefore, the perforation p of the film leader
is engaged with the perforation engaging claw 19a of the film feeding device t19. In this state, the film feed device #19 is activated by turning on the power switch of the camera or pressing the shutter button to feed the film. When the back cover 4 is opened, the film pressure plate 17 is
Elastic support pieces 16a, 16b, 1
6c returns to the position where the outer guide member 15 and the inner surface are aligned.

In the configuration described above, if the film leader F is long and its tip protrudes outside the camera when the back cover 4 is turned i; (2) It is necessary to pull out the tip of i from the camera body 2 so that the light between the camera body 2 and the back cover 4 can be sufficiently blocked. In order to achieve sufficient light shielding, for example, the overlapping portion of the camera body 2 and back cover 4 can be shielded from light using a telescope or a malt blend for light shielding, or a labyrinth seal as described in Japanese Patent Publication No. 44-23785. Use to block light.

Note that the opening/closing direction of the back cover is not limited to that in the above embodiments; for example, a back cover that swings about an axis between the top and bottom of the camera may be used, as is used in general cameras. .

As explained in detail above, the simple loading camera of the present invention has the following features:
Loading the cartridge can be done quite easily, and there is no possibility that the film will get caught on the protrusion on the back of the camera body when loading or unloading the cartridge, making it extremely convenient for practical use.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a camera according to an embodiment of the present invention, FIG. 2 is a partially cutaway perspective view of FIG. 1, and FIG. 3 is a side cross-section showing a part of the camera shown in FIG. FIG. 4 is a side sectional view showing a part of the camera of FIG. 1. 1.....Ran Yisou Maki camera 2..Camera body 4............Awe lid 5..
...Patrone loading chamber 6...Bottom
Surface 7...Back surface 8...Slit 9...Exposure opening 12...
...Fixed blade 13...Movable blade】4
...Inner guide member 15...Outer guide member 19...Film feeding device

Claims (1)

[Claims] A member for guiding a cartridge loading chamber and a film leader is formed in the camera body, and a cutter means is provided on the opposite side of the loading chamber across the exposure opening, and the cartridge is moved from the bottom surface of the camera in the cartridge axis direction. In a camera that is designed to be loaded while rolling, the exposure of the film leader that is moved toward the top of the camera when loading the barrel is
There are few edges on the camera body side facing the surface (
A portion of each is chamfered in a cross section perpendicular to the longitudinal direction of the camera body, and the perforation engaging claw of the film feeding means provided on the back side of the camera is positioned further rearward of the camera than the outer surface of the film leader guide member provided on the back side. This is a simple loading camera with an improved film leader guide section, where I[a means that it is formed so as not to protrude to the side.