JPS5828726A - Film guiding device - Google Patents

Abstract

PURPOSE:To facilitate the take-out of a film terminal, by forming a guide part with two members and supporting one of the two members rotatably to a shaft. CONSTITUTION:A guide part 20 includes the 1st guide member 20a fixed at the main body of a projector and the 2nd guide member 20b which can freely turn around a shaft 30. The member 20b is usually energized along the position shown by a solid line. Under such conditions, the members 20a and 20b serve as a coupled guide member and form a film path 36. The member 20b is manually turned to the position shown by the 1-dot chain line when the film is taken out after projection. Thus the member 20a is held as it is by means of a hooking mechanism which is not shown in the diagram. Under such conditions, the member 20b goes apart from the member 20a. Thus the terminal 4a of the film can be easily removed out of the film path 36.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a film guide device, and more particularly to a film guide device for guiding a film supplied from a supply IJ to a take-up reel.

Such film guide devices are used in, for example, movie projectors. Various inventions have been made to stop winding before the film is completely wound from the supply reel to the take-up reel, making it easier to remove the end of the film, but the film path is fixed. In many cases, especially when the end of the film is inside the film path, it is very difficult to take out the end of the film, which has been a problem. In particular, when the supply reel and take-up reel are coaxially arranged, the end of the film is taken out at the end of winding.
In a projector that performs projection by rewinding the film onto a supply reel, there is a need for a means to easily remove the trailing end of the film.

Therefore, the present invention overcomes the conventional drawbacks as mentioned above,
To provide a film guide device which easily removes the end of a film wound on a take-up reel from a film path and makes it easy to take out the end of the film.

According to the present invention, in order to achieve this purpose, the guide member that guides the film to the take-up reel is composed of two guide members, and when the film is wound, these guide members are connected as one guide member (3). , one of the guide members is rotatably supported around the take-up reel side path end f-J, and when taking out the film, by rotating it, the trailing end of the film can be removed from the film path. The configuration was adopted.

The present invention will be described in detail below based on embodiments shown in the drawings.

1 and 2 show a projector to which the present invention is applied, in which a film supply reel 2 is placed on a main body 1 of the projector in the first slot. A take-up reel 3 for winding the film is arranged coaxially with the supply reel 2. The film 4 pulled out from the supply reel 2 is detected by a first sensor 5 for detecting film provided at the top of the projector, and the projector 1 is thereby started. Thereby, the film is passed through the film guide section 7 by the feed roller 6, the film supply sprocket 8 and the gate section 9. The spout is supported by an 8-piece loop setter 10, and when the passage of the film is detected by the first sensor 5 (4), the loop setter 10 is set from the upper position to the position shown in FIG. It forms a loop to facilitate the passage of the film.

A projection lamp 11 and a scraping claw 12 are arranged behind the gate section 9, and the film 4 passing through the gate section 9 is intermittently fed to the projection lens 13 and a screen 21.
projected on top. The film thus fed passes through the recording and reproducing section 14, passes through the constant speed feed section 15, passes through the sound sprocket 16, and is sent along the film guide 17 to the feed roller 18. A second sensor 19 for detecting the end of the film is arranged between the film guide 17 and the feed roller 18, and when the second sensor 19 detects the end of the film, the running of the film is stopped. The film sent by the feed roller 18 is further wound onto the take-up reel 3 via the film guide section 20.

In FIG. 1, reference numeral 22 denotes a power switch, by which the power of the projector 1 can be turned on and off. This projector is equipped with an operation panel 23 and operation buttons 24 and 25 on the side of the screen 21, which are used to control various functions associated with projection, such as forward forwarding, reverse forwarding, switching the film forwarding speed, etc. Various functions such as recording and playback can be performed.

In order to facilitate the winding up of the leading edge of the film to be wound up in FIG. The other end is in contact with the additional winding reel 3 via a friction member such as rubber. Therefore, for example, when winding a film, the take-up reel rotates clockwise in FIG. , making it easy to take out the film.

3 and 4 show the film guide device according to the present invention in detail, and as is clear from the figures, the film guide section 20 has a first guide member 20a and a second guide member 20b. The first guide member 2
0a is fixed to the projector body, while the second guide member 20b is rotatable around an axis 3o, and is implanted below the guide member as is clear from FIG. A spring 32, one end of which is fixed to a pin 31, normally biases it to the position shown by the solid line in FIGS. 3 and 4. In this state, the first and second guide members 20a, 20
b serves as a connected guide member and forms a film path 36. Reference numerals 33, 34, and 35 are guide rollers provided on the second film guide member 20b, respectively, to facilitate the travel of the film along the film path 36. 1. As is clear from FIG. 4, an arm 37 on which a pin 38 is implanted is attached to the LoopSec 10, and this pin 38 has a rotating piece that can rotate around a shaft 39b. The notch at 39 is part 39a.
are mated. The rotating piece 39 is provided with an upwardly inclined inclined portion 39C on the film path side.
9C, when the second guide part 20b is rotated around the shaft 30 to the position shown by the dashed line, it engages with the tip 20c of the guide member, and moves the second (7) guide member 20b to the position shown by the dashed line. It is constructed so that it can be held in the position shown in the figure.

When the passage of the film is detected by the first sensor 5, the Loopsec lO moves downward, thereby causing the rotation piece 39 to move downward.
rotates downward about the shaft 39b, and therefore the twelfth guide member 201] moves to the position shown by the solid line. When the passage of the trench film is detected by the second sensor 19, the Loopsec 1o moves to the upper position, making it possible to hold the guide member 20b in the position shown by the dashed line. In FIG. 3, 40 is a film guide for guiding the film supplied from the supply reel into the projector, and 41 is a guide roller therefor.

Reference numerals 42, 43, and 44 are guide rollers for guiding the end of the film back to the supply reel during rewinding.

Next, the present invention configured as described above will be explained in detail.

When the film 4 is supplied from the supply reel 2 and the passage of the film is detected by the first sensor 5, loop sec 1 is started.
0 moves downward, the rotation J439 moves downward (8), the guide member 20b moves to the position shown by the solid line in FIGS. 3 and 4, and the film path 36 connected with the guide member 20a moves It is formed.

In this state, when the film passes through the gate section 9, its image is projected onto the screen 21 via the projection lens 13, and the recording and reproducing section 14, constant speed feed section 15, sound booth rocket 16, feed roller 1
8. It passes through the guide section 20 and is wound onto the take-up reel 3.

As the winding progresses in this manner, when the end of the film 4 is detected by the second sensor 19, the loop sec 10
is released, the rotating piece 39 moves upward, and at the same time, the film stops running. In this state, when the second guide member 20b is manually rotated to the position shown by the dashed line in FIGS. When engaged, the guide member 20b is held in the position shown by the dashed line. In this condition, the guide member 20b separates from the guide member 20a), making it easy to remove the trailing end 4a of the film from the film path; You will be able to rewind.

In the embodiment described above, the guide member 20b is manually moved to the positions 1j and 2 shown by the dashed-dotted line.
Loopsec when the end of Philno is detected by
After 0 moves upward, the guide member 20b may be automatically moved to the holding position 1 by, for example, a solenoid.

As explained above, according to the present invention, the guide section disposed near the take-up reel is composed of two guide members, one of which is rotatably supported on an axis, and when the film is wound, the other guide member is rotatably supported. The guide member is connected to the guide member, and when rewinding the film, it is rotated so that the end of the film can be removed from the film path, so the end of the film can be easily removed.
Moreover, it is possible to reliably move the film from the film path and to easily take out the end of the film.

[Brief explanation of drawings]

Each figure shows an embodiment of the present invention.
FIG. 2 is a schematic perspective view and layout configuration diagram of a projector in which the device of the present invention is used, and FIGS. 3 and 4 are a partial plan view and a schematic perspective view showing the configuration of the device of the present invention, respectively. ■...Movie projector, 2...Supply reel, 3...Take-up reel, 4...Film, 5...First sensor, 1
0... Loop setter, 13... Projection lens, 14.
...Recording/playback section, 15...Constant speed feed section, 19...Second sensor, 20...Guide section, 20a, 20b--
・Guide member, 39...Rotating piece, 42, 43.44・
・Guide roller. Patent applicant Yamawa Denki Co., Ltd. (1 other person) (11)

Claims (6)

[Claims] (1) In a film guide device that guides the film supplied from the supply reel to the take-up reel, the first and second parts are connected to form a film path when the film is taken up.
A guide member is provided, and the second guide member is rotatably supported around the take-up reel side road end U, and when taking out the film, the second guide member is rotated to remove the end of the film from the film path. A film guide device characterized in that it is removable. (2) The film guide device according to claim 1, further comprising means for holding the second guide member outside the film path. (3) Means for detecting the end of the film and stopping the running of the film is provided, and the end of the film is stopped at the first guide member. The film guide device described in . (4) When the end of the film is detected, the second
4. The film guide device according to claim 3, wherein the guide portion A' is automatically moved out of the film path. (5) Any one of claims 1 to 4, characterized in that means is provided for releasing the holding of the second guide member in order to return the second guide member to the film path. The film guide device according to item 1. (6) The film guide device according to claim 5, wherein the releasing means is performed in conjunction with film loading from a supply reel.