FR2686230A1 - SAFETY HELMET EQUIPPED WITH ATTACHMENT PIECES OF AN ACCESSORY. - Google Patents

Abstract

A safety helmet is equipped with a holding device intended to attach an accessory 22 to the outer surface of the cap 14. The holding device comprises at least one elastic fastening part 30 mounted by clipping in an opening 31 of mating shape. , formed in the cap 14. The fastener 30 comprises a first outer wing 32 joined to a second internal wing 34 by connecting means 36, 38, a mechanical locking means 66 arranged on the second wing 34, and a means elastic 51 ensuring the tightening of the first wing 32 against the outer surface of the cap 14. Application: fixing a headlamp on a helmet.

Description

SAFETY HELMET EQUIPPED WITH FIXING COMPONENTS

AN ACCESSORY

  The invention relates to a cap safety helmet equipped with a holding system for attaching an accessory to the outer surface of the cap. The system for holding the straps of a headlamp comprises

  generally elastics fixed in predetermined locations of the cap.

  Each elastic cooperates with a fastening lug secured to the outer surface of the cap by means of a rivet through the wall of the cap Riveting operations complicate the manufacture of the helmet, and aging

  Premature elastics pose a maintenance problem.

  For standard helmets which are not equipped with elastics of fixation, it is known to use clips in the form of elastic hooks intended to be

  inserted from the bottom on the lower edge of the helmet to hold the straps.

  The clips are formed by separate plastic parts not integrated with the

  cap, and therefore easily lost.

  The object of the invention is to improve the system for maintaining a

  accessory on a safety helmet.

  The helmet according to the invention is characterized in that the holding system comprises at least one fastening piece mounted by clipping into a conjugate-shaped opening formed in the cap, said fastener being shaped as an elastic gripper comprising: a first wing external joined to a second inner wing by connecting means, arranged to allow a relative movement of spacing and approximation between the two wings, a mechanical locking means located on the second wing to ensure a positive locking of the piece in the opening, and an elastic means cooperating with the inner wall of the cap for

  apply the first outer wing against the outer surface of the helmet.

  After mounting in the openings of the cap, the fasteners are an integral part of the helmet The clipping avoids any additional riveting operation. According to one characteristic of the invention, the two wings extend substantially parallel to each other to form a semi-open notch intended to cover a first edge of the opening. The second inner wing has a lyre structure, having two lateral branches secured to the connecting bridges and

  an intermediate intermediate branch constituting said elastic means.

  A longitudinal space is provided between the two connecting means for

  allow the movement of the elastic middle branch of the second wing.

  A rectilinear bearing surface is provided on each connecting bridge opposite the notch, and is delimited by a first abutment and a second abutment respectively integral with the first outer wing, and the second inner wing, the spacing between the two stops being greater than the thickness of

the wall of the cap.

  The blocking of the fastener in the opening is effected, firstly by means of a redan of the end face of the second flange being engaged with a first edge of the opening when coming into position. engagement of the bearing surfaces against a second edge located opposite the first edge, and secondly by elasticity effect by the elastic pressure action of the free end of

  the intermediate branch of the second wing on the inner face of the cap.

  According to one embodiment, the accessory is formed by a headlamp

  associated with a cap with elastic straps.

  Other benefits and features will become more apparent from the

  following description of an embodiment of the invention, given as a

  non-limiting example, and shown in the accompanying drawings, wherein: Figure 1 is a schematic perspective view of a safety helmet equipped with a fastening part of an elastic strap of a headlamp; Figure 2 shows an elevational view of the fastener before its introduction into the corresponding opening of the helmet; Figure 3 is a side view of the inner part of the fastener according to Figure 2; Figure 4 is a plan view of Figure 3; Figures 5 to 7 show successive stages of mounting the fastener in the opening, respectively being introduced, and in the unlocked and locked position; FIG. 8 is an identical view of FIG. 7, and shows the fastener in

  locked position after insertion of the elastic strap.

  In FIG. 1, a safety helmet 10 is equipped at the front with a front lighting lamp 12 attached to the outer surface of the cap 14 by a holding system 16 shaped as an elastic cap. The lamp 12 comprises a base 18 hinged about a horizontal axis, and is permanently secured to the resilient cap of the holding system 16, comprising a pair of side straps 22, 24, one of which 22 is shown on the left side of the cap 14, the other 24 is shown dotted on the right side of the cap 14 and a third central strap 26 The three straps 22, 24, 26 follow the shape of the cap 14, and are made by means of an elastic band of material synthetic textile, having a predetermined width,

  especially between 1 and 7 centimeters.

  Each strap 22, 24 lateral of the elastic cap extends parallel along the lower edge 28 of the cap 14, and has a length

  substantially equal to half of the base perimeter of the cap 14.

  The orientation of the central strap 26 is performed along a generatrix located in the median plane of the cap 14 so as to contribute to the stability of the

elastic headgear on the helmet 10.

  The locking of the two lateral straps 22, 24 of the cap on the outer surface of the cap 14 is effected by means of fasteners 30 of identical structures mounted by clipping into openings 31 of conjugate shapes, formed in the wall of the cap 14 above the lower edge 28 Each opening 31 advantageously has a shape

  rectangular, but it is clear that any other form can be used.

  In FIGS. 2 to 4, each fastener 30 is shaped as a clip or elastic clip, having a first outer flange 32, one end of which is joined to a second inner flange 34 by connection means comprising two bridges 36 The two flanges 32, 34 are substantially parallel, so as to form a U-shaped semi-open slot 40 intended to cap the lower edge 42 of the opening 31 during the

  placing the attachment piece 30 on the cap 14.

  The inner flange 34 of the fastener 30 has a lyre structure, having two integral branches 44, 46 integral with the connecting bridges 36, 38, and an intermediate branch 48 serving as a pressure spring for the stable holding of the fastening piece 30 in the corresponding opening 31 Opposite the connecting bridges 36, 38, the three elementary branches 44, 46, 48 are joined together by the end face 50 extending over the entire width of the internal wing 34, while the free end 51 of the middle branch 48 is projecting relative to the substantially flat bearing surface 52, 54 of the

two connecting bridges 36, 38.

  A longitudinal gap 56 separates the two connecting bridges 36, 38 allowing the pivoting movement of the elastic middle branch 48 of the inner flange 34 in a direction Fl - (FIG. 4) substantially perpendicular to the outer flange 32. Each branch 44 46 of the second inner flange 34 is provided with a protuberance 58, 60 arranged facing a plane extension 62 of the first outer flange 32. The extension 62 extends over the entire width of the outer flange 32 and is equipped with a first stop 63 formed by the flat inner surface oriented in a direction perpendicular to the bearing surfaces

  52, 54 of the two connecting bridges 36,38.

  Each protuberance 58, 60 similarly comprises a second abutment 64 formed by the plane inner surface perpendicular to the bearing surfaces 52, 54. The transverse distance 65 between the two abutments 63, 64 corresponds to the length of the surfaces of support 52, 54 rectilinear bridges 36, 38 and is greater than the thickness 67 of the notch 40, and that of the wall of the cap 14 The inner end face 50 of the second flange 34 comprises a redan 66 locking member extending parallel to the bearing surfaces 52, 54 The free end of the first flange 32 is provided with an oblique entrance edge 68 facilitating the introduction of the straps 22, 24 on the side fasteners 30 mounted

on the headphones 10.

  The distance 70 between the locking step 62 and the bearing surfaces 52, 54 of the attachment piece 30 substantially corresponds to the height 72 of

  the corresponding opening 31 of the cap 14 (see FIG. 2).

  The fasteners 30 are advantageously obtained by molding a plastic material of high mechanical strength, allowing the deformation

  elastic during insertion into the openings 31 of the cap 14.

  The mounting of a fastener 30 on the cap 14, and the insertion of the strap 22 of the elastic cap is carried out as follows (see Figures 5 to 8): Figure 5 shows the engagement according to the F 2 arrow of the fastener in the aperture 31 of the cap 14 This engagement movement operates at an angle from the outside of the helmet 10, by overlapping the U-notch 40 of the piece 30 on the lower edge 42 of the opening 31 A thrust action on the extension 62 causes the two flanges 32, 34 to move apart, until the protuberances 58, 60 of the upper edge 76 of the opening 31 reach the outer surface. protuberances 58, 60 is advantageously curved to facilitate the insertion of the fastener 30 into the opening 31 During the spacing of the flanges 32, 34, the end 51 of the middle branch 48 of the second flange 34 is urged to extension 62 of

the first wing 32.

  In FIG. 6, the fastening piece 30 is inserted and centered in the opening 31 by covering the lower edge 42 with a small gap between the two flanges 32, 34. There remains a slight clearance between the extension 62 and the edge

upper 76 of the opening 31.

  To ensure the positive locking of the fastener 30 in the opening 31, simply slide the piece 30 in the direction of the arrow F 3 (Figure 6) until the end of the engagement course surfaces 52, 54 with the upper edge 76 of the opening 31 (Figure 7) In this end position, the redan 66 reaches the lower edge 42, followed by its hooking under the elastic return action of the second wing 34 This results in a lock

  positive of the fixing piece 30 in the opening 31.

  The fixing piece 30 is embedded in the opening 31 and is an integral part of the cap 14. The first stop 63 is in stable support against the outer wall of the cap 14 by the action of the elastic return force, resulting the support end of the end 51 of the middle branch 48 against the inner wall of the cap 14 above the upper edge 76 The second stop 64 is separated from the inner wall of the cap 14 by a

predetermined interval.

  The insertion of the strap 22 or 24 into the part 30 takes place on the side of the oblique edge 68 in the direction of the arrow F 4 (FIG. 7). The strap 22 slides to the bottom of the notch 40, and causes the projecting piece 30 to move in translation, which moves in translation in a direction substantially perpendicular to the cap 14 (arrow F 5, FIG. 8). As a function of the thickness of the strap 22, the second stop 64 closer or less to the inner wall of the cap 14, and can come into contact with it The first stop 63 is then separated from the outer wall of the cap 14 by a predetermined interval, but the bearing surfaces 52, 54 remain in engagement against the upper edge 76 of the opening 31 The first outer flange 32 tightens the strap 22 against the outer surface of the cap 14 thanks to the pressure force exerted by the end 51 on the inner wall of the helmet 10 The redan 66 is still engaged with the lower edge 42 so as to retain the locking effect

of the fastener 30.

  In the inactive mounted position of FIG. 7, the fixing piece 30 can be disassembled by exerting an unlocking force on the lower end of the end face 50, followed by a sliding movement in the direction of the lower edge 42, and a release to the left, causing the removal of the part

  fixing 30 outside the opening 31.

  According to one variant, the end of the end face 50 of the second inner flange 34 is arranged to prevent any unlocking of the step 66 after mounting of the fastening piece 30 in the opening 31. The dismounting of the fastening piece 30 is then made impossible The orientation of the fasteners 30 on the cap 14 can be reversed by cooperating the bearing surfaces 52, 54 with the lower edge 42, and the

  locking redan with the upper edge 76 of the openings 31.

  The use of fasteners 30 on the cap 14 can be reserved for any other

  accessory to be attached to the helmet 10.

  Mounting of the fasteners 30 can be done at the factory, or by

  the user himself according to the nature of the accessory.

Claims (9)

  1 safety helmet with cap 14 equipped with a holding system 16 for attaching an accessory to the outer surface of the cap 14, characterized in that the holding system 16 comprises at least one fastener 30 mounted by clipping into an opening 31 of conjugate shape formed in the cap 14, said fastener 30 being shaped as an elastic clamp comprising: a first outer flange 32 joined to a second inner flange 34 by connecting means 36, 38 arranged to allow relative movement spacing and approximation between the two flanges 32, 34, a mechanical locking means 66 located on the second flange 34 to ensure a positive locking of the piece 30 in the opening 31, and an elastic means cooperating with the inner wall of the cap 14 for   urging the first outer flange 32 against the outer surface of the helmet 10.   2 safety helmet according to claim 1, characterized in that the connecting means 36, 38 of the two wings 32, 34 comprise a pair of bridges acting as hinges, and that the two wings 32, 34 extend   substantially parallel to each other to form a notch 40 half-way   open intended to cap a first song 42 of the opening 31.   Safety helmet according to claim 2, characterized in that the second inner wing 34 has a lyre structure, having two lateral branches 44, 46 integral with the connecting bridges 36, 38, and a central branch   Interlayer constituting said elastic means.   4 Safety helmet according to claim 3, characterized in that the two connecting bridges 36, 38 are separated by a longitudinal gap 56 allowing the deflection, by pivoting the elastic middle branch 48 of the second flange 34, and that the three elementary branches 44, 46, 48 are located opposite the connecting bridges 36, 38 by a terminal face   extending the entire width of the second wing 34.   Safety helmet according to claim 4, characterized in that each connecting bridge 36, 38 has outside the notch 40 a bearing surface 52, 54 substantially flat cooperating opposite the first edge 42 with a second edge 76 of the opening 31, and that the bearing surface 52, 54 is delimited by a first stop 63 and a second stop 64 secured respectively to the first outer flange 32 and the second inner flange 34, 65 between the two stops 63, 64 being greater than   the thickness of the wall of the cap 14.   6 Safety helmet according to claim 5, characterized in that the free end 51 of the elastic middle branch 48 of the second flange 34 is projecting from the bearing surfaces 52, 54, and cooperates with the inner wall of the cap 14 during the establishment of the fastener 30 in the opening 31.   7 Safety helmet according to claim 5 or 6, characterized in that the locking means of the second flange 34 is formed by a notch 66 formed in the inner end face 50, and separated from the bearing surfaces 52, 54 by a distance 70 corresponding substantially to the height of the opening 31   measured between the first and second edges 42, 76.   Safety helmet according to one of Claims 5 to 7, characterized in   that the first stop 63 is formed by an extension 62 extending over the entire width of the first outer flange 32, and the second stop 64 has a protuberance 58, 60 arranged on each lateral branch 44, 46   of the second inner wing 34, opposite said extension 62.   Safety helmet according to one of Claims 5 to 8, characterized in   that the opening 31 of the cap 14 has a rectangular shape, and that the locking means 66 of the second flange 34 is engaged with the first edge 42 when the engagement surfaces 52, 54 come into engagement against the second song 76.   Safety helmet according to one of claims 1 to 9, wherein   the accessory is constituted by a frontal lighting lamp 12 associated with an elastic headdress with straps 22, 24, 26 made by means of an elastic band of synthetic textile material, characterized in that a plurality of openings 31 is 2686230   arranged along the lower edge 28 of the cap 14 and cooperates with corresponding fasteners 30, capable of receiving lateral straps 22, 24 of the elastic cap, inserted between the first flange 32   outside, and the outer surface of the cap 14.