DE1885136U - FILM CASSETTE MADE OF PLASTIC. - Google Patents

Description

P./U70 967 * 26. 1

AGfA AKTIENGESELLSCHAfT - July 25, 1961

in '1 Ό / Brt / Ba

Leverkusen-Bayerwerk

PK 2H / MK 413

film cassette made of plastic

The invention relates to a film cassette, especially for cinema films Made of plastic, the beeches of which are attached to the lower part of the cassette by means of pedals connected is. ".

With cinema cassettes, the cover is regularly screwed on Lower part attached. It is also known to work on both! Healing approaches to be injected through a raised wedge clamp be held together. So far, however, this has only been used as an additional light protection in connection with screws and does not appear to be completely reliable, as the wedge clamps can be easily loosened by vibrations. It is also known, instead of screws to provide spring pins, which in one. Teü). are out and reach behind Ansehläge on the other part, lie. . Spring pins again require special manufacturing tools and additional assembly work. ,

According to the invention it is proposed that the spring clips on one Cassette part (cover) and lider bearing approaches cooperating with this to be molded onto the other cassette part (lower part).

• ■ ■ '- 2 -

PK 2H / 1K 413

Special fasteners are not required here, and for closing and opening the cassette it is of secondary importance how many spring clips are provided. Even the arrangement and design of the spring clips only has an influence on the manufacture of the injection molding tools, according to the invention's proposal a particularly reliable and light-proof connection is therefore obtained between the two cassette parts.

According to a further invention, the. Clamping devices attached to all longitudinal and front sides of the cassette and to the perpendicular to the main plane of the cassette Flanges molded on, lan then comes with relatively few connecting surfaces and still has very strong mechanical connections. On the long sides of the cassette, the flanges in the area of the Clamp devices to be moved to the inside of the cassette.

It is particularly advantageous to use the spring clips in the shape of a hammer to form a crosshead seated on a spring bar ,. that engages behind two lateral abutment approaches. This connection can be produced without sliding tools and requires therefore practically no rework. At the abutment an .. Sentences and / or the crosshead of the bolt are as close as possible provide through which the spring bar when the Lid is deflected outward, so that he then his Hammer approaches can snap into place behind the abutment with relatively large forces. The locking surfaces of the crossbar. main should be formed undercut if possible in such a way that they are only close to the cassette in the closed position

■■ '-.3 -

PK 2H / MK 413

ten flanges are in contact with the abutment lugs »Die Eiegelkraft can then transfer practically directly in the flange plane will. ■

As is also proposed according to the invention, the

.1

Sehlußstellen the spring clips provided on the long sides of the camera connected by a web, thus sufficient strength, is achieved especially in the area of the relatively low cover at the connection point. If necessary, the footbridges .. in Recesses of the flange of the lower part are pulled down, since this point is covered to the outside by the spring clips and can therefore be designed to be sufficiently light-proof.

The pressure lug can then be attached directly to the receiving side Form the provided spring clip. The material attached there is therefore used for a dual purpose.

Finally, according to the invention, it is also proposed on the lower part of the cassette and / or lid special when opening or closing the clamping devices directly or indirectly by hand. to form capturing projections. If necessary, special devices are provided that allow easy opening of the cassettes in the Enable darkness.

In the drawing, which shows an example embodiment of the Invention reproduces show

Fig. 1 is a spatial representation of the closed Cassette,. ν

.— 4 - \ / PK 214 / MK 413

Ed. 2 an arrangement for opening the cassette,

Fig. 3 shows an enlarged three-dimensional representation of a hammer lock and

Pig. 4 shows a similar bar position of the associated opening element.

In the drawing, 1 denotes the lower part and 2 denotes the cover of a cinema cassette. 3 is the take-up reel and 4 is the bearing for a supply reel, not shown here. The film 21 running off the take-up reel is guided via an injection-molded segment-shaped deflector 5 to a first cassette mouth 6, then exposed and runs through a further cassette mouth 7 over a second segment-shaped deflector 8 to the take-up reel 3. The two cassette parts essentially consist of flat plates with lateral splashes 1a and 2a 'running all around. These are reinforced in the middle part of the cassette by webs 1b, 2b and Tc, 2e. Clamp devices 9 serve to connect the two cassette parts, of which in Pig. 3 is drawn out enlarged. While the clip devices are attached to the outside of the narrow cassette sides, they are drawn inwards on the long sides. There the paddles 1a, 2a are set back at 20 towards the interior of the cassette.

As shown in FIG. 3, each clamping device has a hammer-shaped one Spring clip 10 with an integrally formed on the plan 2a resilient web 11 and a cross head 12 provided at its free end with two lateral hammer lugs 13, "

- 5 - ■ '. -. · ■ · ■ - .. 'PK 214 / MK 413.

which lock behind on both sides of the web 11 on the flange 1a provided abutment lugs 14. These abutment approaches have lead-in bevels 14a and the hammer approaches lead-in bevels. 13a on. It is therefore sufficient to insert the cover onto the lower part to press, whereby the web 11 is bent outward by means of the bevels 13a, 14a and the hammer lugs 13 slide along the abutment lugs 14 and with their locking edge .15 Snap behind the lower surfaces of the approaches 14. The surfaces 13b of the hammer lugs 13 are slightly behind in the closed position inclined downward-outward, so that only the edges 15 are in engagement and therefore the force directly on the outside surface of the puddle 1a, 2a is transmitted.

To open it, the cassette is placed on a wedge plate 16 according to Pig which is provided with wedge lugs 17. 2 placed, aligned between the wedge lugs and then pressed down, the wedge lugs grip between the plan 1 a and the webs 11 and press this outward, so that the hammer lugs 13 of the Abutment approaches i4 come free. Now you can by hand or with a special tool molded onto the lower part of the cassette Press projections 18 and thus the lower part of the cover pull off. It is useful if the entire pressure to open the cassette is only exerted on these approaches, i.e. one aligns the cassette between the sets of wedges 17 and pushes then over a bracket on the provided on both sides of the cassette Approaches 18. At the web 11 of the receiving side Clamping device is a pressure lug 12 directly, integrally formed. The training and puncture of the pressure nose are known.

Claims (9)

- ft - PK 214 / MK 413 claims 1. Film cassette, especially cinema cassette made of plastic, the cover of which is connected to the lower part of the cassette by leather clips, characterized in that the spring clips (10) on one cassette part (cover 2) and cooperating abutments with these (14 ") on the other Cassette plate (lower part 1) are formed. 2.. ■■ "'film cassette according to claim 1, characterized in that .that Clamping devices on all longest and front sides of the Cassette attached and perpendicular to the main plane of the cassette protruding flanges (la, 2a) are molded » 3. Film cassette according to claim 2, characterized in that the paddles provided on the long sides of the cassette (Ta, 2a) are set back towards the inside of the cash register in the area of the clamping devices (20). 4. film cassette according to claim 1, 2, or 3, characterized in that: indicates that 'the spring clips are hammer-shaped with a a spring bar (1Ί) seated Eiegelq.uerhaupt (12) is formed that engages behind two lateral lids (14). ■■■: '■ ...'. - 7th - 7 PK 214 / lK 413 5. Film cassette according to claim 4 »characterized by to the Abutment approaches and / or the Riegelguerhaupt vorgesehne Lead-in bevels (14a, 13a) through which the spring bar (11) is deflected outwards when the cover is attached. 6. Film cassette according to claim 4, characterized in that the locking surface (13b) of the locking crosshead is undercut in such a way that in the closed position it is only tight the cassette flanges (la) on the abutment lugs (14) is applied. 7. film cassette according to at least one of the preceding claims, characterized in that the connection points the spring clips provided on the long sides of the camera? n / (10) are connected by a web (2b) .. 8. Film cassette according to at least one of the preceding claims, characterized. That a, pressure nose {ϊ $) provided on the receiving side. Spring clip (10) is formed. ., .- .. ■. 9. The film cassette of ⁷ to at least one of the preceding claims, characterized in that there are particular to the cassette bottom part and / or lid are formed during opening or closing of the clamp devices directly or indirectly by hand to be detected Torsprünge (.18). For this purpose 2 sheets of drawings