DE1955729U - BELLOWS MADE OF ELASTIC MATERIAL. - Google Patents

Description

Möller Werke GmbH., 4812 Brackwede (¥ estf.), Auf dem Kupferhammer

Bellows made of elastic material

The innovation relates to a bellows made of elastic material, which is preferably used to protect against each other movable Machine parts is intended to protect against contamination or contact. The requirement is made on such bellows, that the middle part, ie the actual bellows body, consumes as little energy as possible to move into the two end positions .

The previously known bellows of this type have the same wall thickness everywhere except for the cuff provided at one end. As a result, if the ratio of the pleat diameter is very large compared to the telescopic length knife, the relatively small one When the bellows is compressed, the cuff is pressed into it and thus the bellows at the transition from the outer half-fold to the cuff is overused and damaged. In addition, the gauntlets are often opened by means of metal band clamps

the "machine part concerned are attached and these Band clamps also damage the outer half folds when compressing the bellows.

The present firing is based on the task to fix the aforementioned tibelstand. After. ! That is price increases achieved in that rib-like webs are arranged in the half-fold of the bellows adjacent to the cuff. These Bars preferably run in the radial direction and prevent excessive stress when the bellows is compressed the material at the transition from the outer half fold to the cuff,

In 'the drawing are two Ausfünrungsbeispiele' the hiring Shown · It show:

Fig. 1 shows a longitudinal section through a bellows outward facing cuff,

Fig.

;. 2 a.Cross section according to the line A-B of Fig. 1,

Fig. 3 is a longitudinal section through a bellows with after • - * inside facing cuff,

Fig. 4 is a cross-section along the line G-D in Fig. J.

In the embodiment of Fig. 1 and 2 are inside the outer Ealbfalte a of the bellows five radially extending rib-like Bars b arranged in an even distribution on the circumference, together with your. One-piece bellows in the injection

Dipping, pressing or casting processes are made. The inside edges the webs b lie with the inside diameter of the outside of the actual bellows cuff c "is flush, while its end face extends at right angles to the longitudinal axis of the bellows".

The AIdTd. 3 and 4 show an embodiment "in which between the cuff c ¹ protruding into the bellows and the outer half-fold a of the bellows four radially extending flat webs ft are arranged at intervals of 90 °.

In both embodiments, the webs b prevent an undesired one Buckling of the ÜPaltenbalges at the "transition from the outer half fold a to cuff e or c '. This will make the The lifespan of the bellows is increased considerably. Furthermore, the webs b have the effect that the I-shape of the bellows even when they are rotated preserved.

Claims (6)

A G92 595 * 31.1268 eye protection claims 1. Bellows made of elastic material, characterized in that in the cuff (e Td between. E ¹ ) "adjacent half fold (a) of the bellows rib-like webs (b) are arranged. 2. bellows according to claim 1, characterized in that the Web (b) run in the radial direction ". 3 bellows according to claim 1 and 2, characterized in that that the webs (b) are arranged at regular intervals from one another are. 4. Bellows according to claim Λ and 2, characterized in that the inner edges of the webs (b) are flush with the inner diameter of the cuff (c) lying outside the actual bellows. 5. Bellows according to claim 1 and 2, characterized in that that the end faces of the webs (b) are right-angled to the longitudinal axis of the bellows run. 6. Bellows according to claim 1 and 2, in which the cuff protrudes into the bellows, characterized in that the webs (b) are arranged between the outer half-fold (a) and the cuff (c ¹ ).