DE1459023A1 - Joint design of a plastic film hinge - Google Patents

Description

Pa. Bolta-Werk GmbH., Fftirnberg H 5 9 0 2

Branch at Schönberg / Hdby.

Joint formation is a “plastic joint hinge”

Ss are plastic for a wide variety of purposes Pilm hinge in use, molded from one piece or are extruded »

The puncture of the joint formation of these pilm hinge stands in that at the transition from one hinge half to the other so-hinge half a thin, straight one Joint groove is attached. In the area of this thin, straight joint groove, the kink occurs during the angular movement of the two thicker so-hinge halves · Especially when using of the plastic polypropylene, it was found that this plastic has an almost shows unlimited life. Tests have shown that After 1 million kinks, there is still no break at the joint groove. Bs is explained by the fact that at the kink of the so-hinge halves on the thin joint groove a stretching and orientation of the molecules takes place, which • in a · significant · increase in tensile strength and thus tear resistance, Longing and persistence that remain “ine high” against stress corrosion cracking on this thin joint groove.

All these pilm hinge with a straight joint groove, however, have the property that they want to share the injected or extruded original position back again. Accordingly, if such a pilm hinge with its two sohami halves was made in the plane of 180 degrees, the two soh hinge halves, naoh kneeling, again sound themselves in dl ·

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BATH

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180 ° level back. For example, if a plastic container has a plastic cover connected to a Filmsoharaier «together in the open state of the Deokels is injected with a straight joint groove, then the lid will always open by itself and stay open in the original greenish state be locked · Or if, for example, an extruded film hinge is used for a closed furniture door in the angled position, then the door is always try to open, there sioh the film hinge wants to restore it to its original straight extruded state.

In order to eliminate this Naohteil, according to the invention the formation of the oil groove of a film hinge not carried out in a straight line, but rather easily curved floht executed. This creates a jam in the curved flute during the knee process the joint groove. Vaoh a certain degree of deflection of the two halves of the hinges from the original plane of the two halves of the hinges the so-hinge halves remain in the angled position by themselves

A plastic container with Kunstetoffdeckel _t connected by a fllmscharnier with a curved groove joint therefore remains by itself without any special locking by dit curved joint groove in either the closed or open state. In the case of a furniture plastic film hinge with a curved joint groove, the furniture door therefore remains closed by itself or open by itself due to the curved joint groove

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This effect only works if the curved joint groove is in the same plane as the two halves of the hinge lies, but also when the joint groove is outside the Level of the two so-hinge halves near the top or bottom is duron bent. This effect can be applied to all devices and facilities in which a conventional hinge with a vertical hinge eye and hinge pin or with an articulated connection has been used up to now.

In Figure 1, all of the application examples are in one Look up and in a cut the application of a Film hinge with a curved joint groove a plastic container with a molded lid.

In Figure 2 is an application example in the Front view, top view and in the figure shows the design of the joint groove of the pilma hinge with a sun hat cover.

In Figure 1, the plastic container is denoted by 1 and the molded plastic cover is denoted by 2. The container 1 and the lid 2 are connected by the lilmsoharnier 3 · The thin joint groove 4 runs in curved alignment in the same plane as the film hook 3 from point 5 to 6 and back to 7 · When the bottom of the cover 2 is poured onto the container 1, the joint groove 4 is created within the area at the point 5 and 7 opposite the Funct 6 a deadlock. Due to this effect, the cover 2 remains closed on the container 1 tone itself.

In Figure 2 a sun visor is off Plastic for a car labeled 1. It consists of a half-hinge 2 and a half-hinge 3 connected by a curved joint groove 4. The upper one

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Claims (1)

- sheet 4 - Hinge half 2 is attached to the curved post 6 at the top of the windshield with line screws 5 Cars screwed on. The joint groove 4 between the two so-hinge halves 2 and 3 is from point 7 to bent at point 8 and goes back again la same Bend after point 9 If the hinge half is now bent upwards, points 7 # jam. 8 and 9 of the Qelenkrille against each other and remains the Half of the hinge 3 is in the vertically bent state by itself. PAtEHJ AHSPHUOHE Plastic pilme hinge with molded joint groove · characterized in that the joint groove · of the film · »hinge ·· is not in a straight line (point 5» 6 »7 Figure 1 and point 7, Q ₉ 9 Figure 2) but in a curved design and as a result, near the bending process of the two halves of the hinge, there is an effect that either holds the hinge in the open state or holds it in place in the closed state. BATH ORIGINAL 909811 / G223