FR2717047A1 - Safety glasses retractable into safety helmet - Google Patents

Abstract

The glasses (3) are fixed to a safety helmet (1) which is retractable into a recess (2) in front. Each arm (4) of the glasses has an axle on its end (4a) which engages in an oblong hole (6) in the lateral wall of the helmet. The glasses pivot downwards on the axle, and the axle moves horizontally in the hole to position the glasses in front of the eyes. The glasses are moved by pulling on feet (7) on each arm. The arms can be telescopic or have articulated rods forming a knuckle joint.

Description

Sunscreen. retractable inside a safety helmet. with two degrees of freedom.

 The present invention relates to a retractable protective eyeglass inside a safety helmet and compatible with the wearing of corrective glasses.

 The object of the invention is to have a protective lens which can be tilted easily by hand, as required: in the service position, in front of the eyes against the face. and in the raised position, in a housing provided for this purpose in the helmet or under the visor.

 Another object of the invention is to use means of articulation and translation combined with the protective glasses in order to allow the wearing of corrective glasses without impairing good protection.

 The description which follows with reference to the drawings attached by way of example, without limitation, will make it possible to understand how the invention can be put into practice.

 Figure 1 shows a longitudinal section of a device and the front of a helmet.

 Figure 2 shows a section A seen from above.

 Figure 3 shows a variant of the device.

 Figure 4 shows another variant.

 Figure 5 shows another version.

 Figure 6 shows a bottom view along arrow B.

 Figure 1 shows the front part of a construction helmet (1) and the housing (2) provided therein for receiving a protective lens (3) shown, here, in the raised position.

 The protective screen (3) has, on the right and on the left, two branches (4) on the end (4a) of which two pins (5) are formed in relief.

 These pins (5) can simultaneously pivot and move longitudinally in oblong holes (6) located. on both sides, on the side walls of the helmet (1) so that the protective glasses (3) can go up or down according to arrow Y and also move forwards and backwards according to arrow X and thus come to the correct position in front the eyes.

 This arrangement can possibly be reversed: the pins (5) located on the walls of the helmet (1) and the oblong holes on the end of the branches (4a).

 Generally the movement of the protective screen (3) describes an arc of a circle, which requires to receive it, a large housing. Due to the two simultaneous movements, the vertical displacement of the telescope (3) is practically rectilinear. This allows for a more discreet and therefore lighter housing (2) at the front of the helmet (1).

 All the movements of the assembly (3-4-5) are frictionless so that the bezel (3) remains stationary as soon as we stop acting on the tabs (7) located, right and left , of the helmet (1) and protruding therefrom to facilitate gripping.

 Figure 3 shows a possible variant of this device. In this case, the upward and downward movement of the protective screen (3) is ensured by the rotation of the pins (5) in the holes (8) provided. on both sides, on the side walls of the helmet (1). The branches (4) which are, here, telescopic thereby ensure the translational movement, front rear and vice versa, of the protective screen (3). For this, the branches (4) are made up of two parts: one male (4b) which comes to flow in the other female part (4c) and thus allow the glasses (3) to be moved away or closer to the face.

 Figure 4 shows another variant of the device. Here, the forward and backward movement of the protective screen (3), along arrow X. is ensured, to the right and to the left, of the helmet (1) by the oscillation, according to arrow Z, of levers (10) which rotate at one end (10a) in the holes (8) of the helmet (1) and at the other end (10b) which are articulated on the termination (4a) of the branches (4) of the protective glasses (3) to form a kneepad and ensure horizontal guidance.

 The up and down movement of the protective screen (3), according to arrow Y, is carried out, in this case, by the rotation of the pins (5) in the holes (8).

 Figure 5 shows a different device since it has only one degree of freedom.

 In this figure, the position of the center of articulation (12) of the protective glasses (3) is situated substantially vertically with the lenses of corrective glasses, so that the translational movement along arrow X is unnecessary.

 The visor (13) of the helmet (1) therefore has, on the right and on the left of its lower face, two bosses (14) on which the pins (15) which are integral with the protective glasses (3) are articulated.

To bring the glasses (3) to the service position before the eyes or the corrective glasses, it is necessary to act on the tabs (16) and fold the telescope (3) against the face.

 In the raised position, the protective glasses (3) are held in place, pressed under the visor (13) of the helmet (1) by an elastic lug (17).

 As goes without saying and as it already follows from the foregoing, the invention is in no way limited to those of its embodiments and of application which have been more especially envisaged, it embraces it, on the contrary , all variants.

Claims (6)

Claims  1 - Protective glasses (3) which can be integrated inside a safety helmet (1) in a housing (2) provided for this purpose. These protective glasses (3) comprise, on both sides, two branches (4) arranged in such a way that they allow the conjugation of two simultaneous movements: one in rotation following the arrow Y, the other in translation according to arrow X which thus make it possible, in the service position, before the eyes, to correctly place the protective screen (3).  2 - Casqut: according to claim 1 with regard to the protective glasses (3) provided at the ends (4a) of its two branches (4) with oblong holes (6) which simultaneously allow the rotation and translation of said lens (3) on pins (5) integral with the side walls of the helmet (1).  3 - Helmet according to claim 1 with regard to the branches (4) of the protective glasses (3) made telescopic to obtain a translational movement, front rear and vice versa, of the telescope (3).  4 - A helmet according to claim 1 with regard to the branches (4) of protective glasses (3) terminated at their ends (4a) by articulated links (10) forming a kneepad and ensuring the guiding of the translational movements according to the arrow X and the rotational movement along arrow Y.  5 - Helmet according to any one of the claims with regard to articulation bosses (12) located under the visor or on the helmet (1) and placed vertically in the lenses of corrective glasses, so that by a simple rotation the protective glasses (3) are folded down in front of the eyes or corrective glasses.  6 - A helmet according to claim 5 with regard to the folding of the protective lens (3) which is held pressed under the visor (13) in the out-of-service position.