DE1862554U - COMBINED PROTECTIVE HELMET WITH VISOR SHIELD FOR HIGH VOLTAGE ELECTRICIANS - Google Patents

Description

491294 * 20 7.6?

Utility model ^{registration * fc}

Combined safety helmet with privacy shield for high voltage

electrician

During your work on high-voltage lines and facilities and apparatus, switching personnel, control and repair fitters must expect electrical arcs can occur, which blind or flash the eyes, and that this is associated with strong heat effects, which Burn eyes and face, as well as parts of the metal conductors and contacts in the event of faulty connections melt and literally splash or drip downwards, causing dangerous burns on the head and face to the bottom may have.

To face each of the dangers outlined, protective helmets, protective goggles and signs are already in use. The work helmets used are mostly mechanically very strong and consist of flame retardant and electrically insulating plastics, so that they offer adequate protection against falling heavy and glowing metal parts. Furthermore, "Yerblitzer protective goggles" or protective shields made of transparent, flame-retardant and electrically insulating thermoplastic film or plate material are known, on the outer or front side of which a wafer-thin gold layer is vapor-deposited. The latter gold vapor deposition combines two important properties, namely to dampen the glare extraordinarily and still be sufficiently transparent and also to reflect the radiant heat. However, this thin metal layer is electrically conductive. Such vision shields? / Common ground on adjustable head support bands attached and are often folded up about axes of rotation xvelche at the two upper corners signs are and what _r the T ägergurten or attached to the work helmets. As is well known, this folding up of the shield obviates the need to remove the shield from the head,

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if a clear view for the eye is desired. To have sufficient dimensional stability of the thermoplastic and semicircular The edges of the signs are to ensure a profiled viewing window and a firm hold of the mentioned axes of rotation mainly framed with metallic reinforcement frames.

In the following description and in the accompanying examples Drawings are further developments and improvements to protective helmets, combined with privacy shields, shown, which over the described, known to this day technical state of the protection devices for the respective detailed functions go out5 and which the applicant succeeded on the basis of his thorough experiments and many years of experience are.

The basic knowledge is that the greatest protective effect only with a combination of hard hat and privacy shield can be reached. In addition, the Hein must according to the example Fig. 1 / a made of a high-performance plastic, such as G-UP thermoset, called glass fiber, of excellent shock and impact resistance, adequate flame retardancy and good surface

13th

Resistance values of the order of magnitude of 10 ohms exist, while the display plate according to Fig. 1 / b is made of transparent, flame-retardant plastic film or plate material, such as, for example, a dielectric strength of over 20 kV / mm. The outside of the latter is provided with a wafer-thin gold vapor deposition according to known methods.

The edges of the viewing shield are advantageously completely or partially reinforced or bordered with insulating plastic, as indicated in FIG. 1 / c. These reinforcement edges are either made with deoa Jmämmimmäch $ ld. Allow art to screw off, Fig. 1 / d, or plastic rivets, or they are intimately connected by welding. If the protective edges come into contact with live parts, dangerous voltage transmission to the metal coating of the shield or the helmet is prevented.

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if

In a consistent manner the goal is sought to limit each power line on the protective helmet and visor-on to a minimum. For sera reasons, the upper shield frame is also equipped with a special hinge part such as lig. 1 / e and Pig. 2 / c made of insulating plastic and, if necessary, even made of one piece with the band edging, Pig. 2 / a, pressed or injected in a tried and tested manner. The hinge counterpart, Pig. 3, also consists of an injection-molded or pressed plastic part, which is attached to the circumferential edge of the helmet or the helmet peak by means of plastic screws, Fig. 1 / f, or plastic rivets. The hinge axes through the holes, Pig. 2 / b and Pig. 3 / a, as well as the fastening screws and rivets for the viewing plate in the symbiotic bar according to Pig. 1 / d are basically made of plastic.

As shown in the exemplary illustrations Pig. 2 and 3 can be seen is, the two hinge parts are designed and attached in such a way that the greatest possible folding angle of almost 90 ° is achieved v / can earth. In addition, the two hinge parts are closed at the front and at the top, see Pig examples. 2 / c and 3 / b so that no falling material can settle.

The round contour of the upper shield frame including the hinge base is chosen in such a way that it rests inside the outer edge of the helmet in the working position, i.e., when viewed from above, there is no gap between the helmet and the faceplate through which falling parts can penetrate between the faceplate and the face it is possible.

The applicant achieves a considerable improvement in that the sign according to Pig. 2 is no longer provided with gold vapor deposition on its entire front or outer surface. Rather, this electrically conductive metal layer is only partially applied, in such a way that laterally and Bottom completely transparent and non-metallized shield edges according to Pig. 2 / e stop. When using astralone shields with sufficient dimensional stability is

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This partial coating has the same effect in the simplest possible way as achieved with complete plastic framing, namely that a contact of the shield edges with live Sharing does not have any voltage transmission to the metal coating and the helmet to the pole.

All of the innovations described above are in the field of protective helmets and privacy shields for high-voltage electricians represent considerable improvements and innovations and should therefore both individually and in their combination under Protection will be provided. The applicant accordingly makes the following

Protection claims
valid:

Claims (3)

Protection claims 1) Plastic hard hat and privacy shield made of transparent plastic material with light-damping, radiation-reflecting gold vapor deposition on the outside, characterized in that the work helmet, which is preferably made of impact-resistant GrTJP material, has a flame-repellent and creepage-current-resistant surface of at least 10 ^ ohms with a curved visor made of, for example, transparentesa - mämmmlmmfmm ^ mmßmm Ou.p .. of sufficient dimensional stability, rigidity,! KLanmwidrigkeit and at least 20 kY dielectric strength combined and connected by means of an insulating plastic hinge, the two parts of which are designed in such a way that the opening angle between working and open view positions has a maximum value of up to Can reach 90 ° and the two Sck ^ B-ie ^ sile have to the front and top surfaces, whereby the settling of falling molten metal is avoided, and the shield-side hinge part together with the Schildeinfaßrahmen from a There is a single plastic injection-molded or molded part, and finally the connection of the two interlocking hinge parts so? / ie the shield-side hinge-bearing border strip with demieiieieapcMild and furthermore the helmet-side hinge part with the helmet edge or -shield exclusively by means of insulating bolts, rivets and screws Plastic nuts are made. 2) According to 1), characterized in that the privacy shield from Astralon is only equipped with a partial gold vapor deposition is designed in such a way that the side and bottom edges of the curved shield have wide, insulating edge strips, Virelche when touching the edges of the shield with live conductors do not allow dangerous voltage transmission to the gold-coated shield surface or to the helmet. -Bl. 6- 3) According to 1) and 2), characterized in that the upper edge of the shield is shaped such that it lies completely within the protective helmet edge in the working position and, seen from above, there is no gap between the faceplate and the helmet edge through which falling skin material can get between the faceplate and the face can.