EP2073653B1 - Protective headgear combination - Google Patents

Abstract

A protective headgear combination has a helmet and at least one ear defender secured on the helmet rotational position of the at least one ear defender relative to the helmet is adjustable about a first axis of rotation, wherein the first axis of rotation is positioned relative to the vertical at an angle of less than 45° for an upright head position of a user of the protective headgear combination.

Description

The invention relates to a head protection combination of the type specified in the preamble of claim 1.

From the EP 0 646 333 B1 is a head protection combination with two ear defenders known. The ear protection capsules are each fixed to a headband on the helmet of the head protection combination. The earmuffs can be pivoted outwardly away from the user's ear. In addition, the vertical position of the earmuffs on the headband in the longitudinal direction of the retaining clip is adjustable. In the operating position, the ear protection capsule is pressed by the headband, which is resilient, against the head of the user. With such a holder, depending on the head shape of the user, insufficient sound insulation results may result.

The EP 1 472 944 A2 shows a headgear combination, the earmuff is set via a two-part headband on the helmet. The two sections of the retaining clip are adjustable in their length, so that the position of the ear protection capsule relative to the helmet by length adjustment of the two sections of the retaining clip is adjustable.

The invention has for its object to provide a head protection combination of the generic type, which allows a good adaptation to the head shape of the user and can be achieved with the good sound damping properties.

This object is achieved by a head protection combination with the features of claim 1.

It has been shown that, especially in the area behind the ear, often only insufficient fitting of the hearing protection capsule to the user's head is achieved. Currently at In this area, however, a high sensitivity to sound is given.

The system of ear protection capsules to the head of the user in an area behind the ear can be achieved by the provided adjustable rotational position. It is achieved a good adaptation of the position of the earmuff to the respective head shape of the user. The axis of rotation about which the rotational position of the hearing protection capsule is adjustable, can lie parallel to the vertical or include an angle with the user in upright head posture, so if the user carries the helmet in a conventional manner on the head and keeps the head upright is less than 45 °. Accordingly, an adjustability is achieved about a substantially vertically oriented axis of rotation. Thus, a good conditioning of the hearing protection capsule can also be set in an area behind the ear.

The ear protection capsule is fixed to the helmet via a retaining bracket. The first axis of rotation extends in particular approximately parallel to the longitudinal direction of the retaining clip. With the longitudinal direction of the retaining clip, the imaginary connecting line between the attachment of the retaining clip to the helmet and the attachment of the ear protection capsule to the headband is meant. Advantageously, the rotational position of the ear protection capsule relative to the headband is adjustable. As a result, the function of folding down the retaining clip and the adjustment of the rotational position of the ear protection capsule on the headband can be formed spatially separated, so that sufficient space is available.

Advantageously, the hearing protection capsule is fixed to the helmet via a spherical bearing. About the spherical bearing not only the rotational position about the first axis of rotation, but also the rotational position can be adjusted about a perpendicular thereto axis of rotation. In addition, the position of the earmuff on the headband can be adjusted within predetermined limits forward and backward. As a result, a good adjustability can be achieved. It is envisaged that the spherical bearing comprises a bearing plate with a spherical portion and a releasable clamping device, wherein the spherical portion of the bearing plate can be fixed via the clamping device in different positions on the headband. The clamping device can be easily released and fixed again by the operator. As a result, the rotational position of the ear protection capsule relative to the headband must be set only once for a user. Since the relative position between hearing protection capsule and headband is maintained via the clamping device, no renewed adjustment is necessary when working again with the head protection combination. An adjustment of the retaining bracket to the side or to the rear does not affect the position of the ear protection capsule on the headband.

The ear defenders capsule is pivotally held on the headband about a substantially horizontally disposed pivot axis when the user is upright head posture. As a result, a good automatic adaptation of the position of the earmuff to the head shape of the user is achieved in this direction. The position of the retaining bracket relative to the helmet is adjustable in an upright head posture of the user approximately vertical direction. This also allows a further possibility of adapting the position of the hearing protection capsule relative to the helmet to the head shape of the user. The fact that the position of the ear protection capsule about the axis of rotation relative to the headband and the position of the retaining bracket in the vertical direction relative to the helmet is adjustable, the different adjustment options are spatially separated, so that there is a comparatively simple structural design. On the headband, an inner holder is arranged on the end facing away from the ear protection capsule, wherein the position of the inner holder relative to the helmet in approximately vertical direction is adjustable in upright head posture of the user. A toothing is advantageously arranged on the inner holder, which defines different positions of the inner holder relative to the helmet. The gearing specifies predetermined relative positions between the retaining bracket and the helmet. By counting the teeth, the same height of the hearing protection capsule on both sides of the helmet can be achieved. The toothing ensures at the same time a tight fit of the inner holder to the helmet.

It is envisaged that the headband with the earmuff against the helmet between an operating position in which the earmuff is placed on the head of the user, and a rest position in which the earmuff is arranged laterally spaced from the user's head, is adjustable. With a lateral distance is meant a distance from the head of the user to the outside, ie in the lateral direction of the user's head. Suitably, the head protection combination has a holding device, which holds the headband in the operating position and in the rest position. As a result, the earmuff in the rest position does not have to be held by the user. The distance of the ear protection capsule to the head of the operator is in the rest position as small as possible, so that the user can not hang with the ear protection capsule on branches or the like, for example, when walking through the undergrowth. Suitably, the holding device is arranged in the inner holder. This results in a compact design. In an adjustment of the vertical position of the retaining clip relative to the helmet, the inner holder may remain closed, so that unintentional disassembly of the holding device is avoided. Advantageously, the holding device comprises a spring which is designed as an open spring ring. This spring has a simple structure and can be easily assembled and disassembled. The spring ring can be made comparatively large, so that the assembly is simplified.

It is envisaged that the headband is adjustable from the rest position to a non-operational position, wherein the ear defender capsule is arranged in the inoperative position in the rear region of the helmet at a distance from the helmet. The rear area of the helmet is the area arranged in the region of the back of the head of a user. Because the hearing protection capsule is arranged in the inoperative position at a distance from the helmet, contamination of the hearing protection capsule is avoided by resting on the usually heavily soiled helmet. It is envisaged that the headband for the inoperative position is adjustably held about a second axis of rotation on the helmet, wherein the second axis of rotation in upright head posture of the user includes an angle of more than 45 ° with the vertical. Advantageously, the headband is fixed to the helmet via a mount, and the mount is adjustably fixed to the helmet relative to the helmet about the second axis of rotation. To ensure that the hearing protection capsule is held in different positions, it is provided that the holder has a first toothing, which cooperates with at least one latching nose and determines the detent positions of the holder relative to the helmet. About the locking positions is also possible to adjust the relative position of the ear protection capsule relative to the ear of the user in the operating position possible. Advantageously, the first toothing is formed on a base plate of the holder and the base plate has a second toothing, which cooperates with the inner holder. This achieves a compact construction with a small number of individual parts.

Advantageously, the headband is dimensionally stable.

It is envisaged that the headgear assembly comprises a face shield which can be placed in an operative position and in an inoperative position on the helmet. Advantageously, the face shield is located in the inoperative position outside the field of view of the user.

It is known to provide a face shield with a wire net or with a plastic disc. The plastic disc or wire mesh is bent in known face shields in a holder. The bracket prevents bending back. It has shown, that the bending of a flat plastic disc worsens the optical properties. To achieve a face shield with good optical properties, it is envisioned that the face shield has a face shield made of preformed plastic. A face shield made of preformed plastic has good optical properties. Even with partial damage of the holder in which the face shield is arranged, the face shield does not have a tendency to bend back, so to a flat disc. The formation of the face shield from preformed plastic represents an independent inventive idea.

Fig. 1

eine perspektivische Darstellung einer Kopfschutzkombination,

Fig. 2

eine schematische Seitenansicht einer Kopfschutz- kombination,

Fig. 3

eine schematische Draufsicht auf eine Kopfschutz- kombination,

Fig. 4

eine ausschnittsweise Schnittdarstellung durch die Kopfschutzkombination aus Fig. 1 im Bereich der Gehörschutzkapsel,

Fig. 5

eine schematische Vorderansicht einer Kopfschutz- kombination,

Fig. 6

eine perspektivische Darstellung einer Grund- platte einer Halterung der Kopfschutzkombination aus Fig. 1,

Fig. 7

eine perspektivische Darstellung einer Abdeck- platte der Kopfschutzkombination aus Fig. 1,

Fig. 8

eine Explosionsdarstellung einer Kopfschutzkombi- nation.

Embodiments of the invention are explained below with reference to the drawing. Show it:

Fig. 1

a perspective view of a head protection combination,

Fig. 2

a schematic side view of a head protection combination,

Fig. 3

a schematic plan view of a head protection combination,

Fig. 4

a partial sectional view through the head protection combination Fig. 1 in the field of hearing protection capsule,

Fig. 5

a schematic front view of a head protection combination,

Fig. 6

a perspective view of a base plate of a holder of the head protection combination Fig. 1 .

Fig. 7

a perspective view of a cover plate of the head protection combination Fig. 1 .

Fig. 8

an exploded view of a head protection combination.

In the Fig. 1 shown head protection combination 1 comprises a helmet 2, on which a face shield 3 and two ear defenders 20 are fixed. Of the hearing protection capsules 20 is in Fig. 1 only one shown. The face guard 3 is in Fig. 1 in an operating position 74 in which the face shield 3 obscures and shields the face of a user 38 wearing the headgear combination 1. The face shield 3 has a headband 4, on which a frame 18 is fixed. The frame 18 holds a face shield 17. The face shield 17 is made of preformed, transparent plastic. Instead of the face shield 17 may also be a wire mesh or the like. Be provided. The headband 4 is fixed to the helmet 2 via a hinge 5. The joint 5 is completely covered by a fixed to the headband 4 cover 16 and a fixed helmet 2 cover 15 to the outside and protected from dirt.

The hearing protection capsules 20 are fixed to the helmet 2 via a respective retaining bracket 21. The headband 21 consist of a dimensionally stable material, for example dimensionally stable plastic. Each hearing protection capsule 20 is fixed to a headband 21 via a spherical bearing 23. The spherical bearing 23 comprises a bearing plate 31, which rests against the retaining bracket 21, and a control wheel 28, via which a clamping device can be solved or established. About the spherical bearing 23, the bearing plate 31 can be set in different rotational positions about a first axis of rotation 30 on the headband 21. When a user 38 wears the head protection combination 1, the first axis of rotation 30 is substantially vertical when the user 38 is upright. With the vertical 37, the first axis of rotation 30 encloses an angle α, which is smaller than 45 °. Advantageously, the angle α is less than 30 °, in particular less than 15 °. The spherical bearing 23 allows a pivoting of the hearing protection capsule 20 about the first axis of rotation 30 and a determination of the hearing protection capsule 20 in different rotational positions on the headband 21st

The hearing protection capsule 20 is pivotable on the bearing plate 31 about a pivot axis 29 which is substantially horizontal when the user 38 is upright. For this purpose, the hearing protection capsule 20 has two bearing pins 34, which in receptacles 35 of the bearing plate 31 (FIG. Fig. 8 ) protrude. As Fig. 8 shows, the hearing protection capsule 20 has an outer shell 33, on which the bearing pins 34, of which only one is shown in the figures, are formed.

At the opposite end of the headband 21 is fixed by a bracket 22 on the helmet 2. The holder 22 is pivotable relative to the helmet 2 about a second axis of rotation 65. The second axis of rotation 65 is below the vertical 37 an angle β greater than 45 °. Advantageously, the angle β is about 90 °. In the exemplary embodiment, the angle β is slightly greater than 90 °. In particular, the angle β is 75 ° to 120 °.

In Fig. 2 For example, the face shield 3 is shown in an inoperative position 75. In this position, the face shield 3 is folded upwards into the area of the helmet 2. The joint 5 is designed so that the face protection 3 is not in the range of the field of view of the user 38. To the lower edge of the helmet 2, the face guard 3 has a projection s, which is so small that the lower edge of the face protector 3 does not project into the field of view of the user 38. The supernatant s is in particular about 0.

In the FIGS. 2 and 3 For example, the earmuffs 20 are shown in an inoperative position 72. In Fig. 3 is not shown to simplify the face protection 3. The ear defenders 20 are pivoted about the second axes of rotation 65 to the rear in the region of the back of the user 38 and are at a distance from the helmet 2. The earmuffs 20 can not work on the helmet 2 and so pollute. As a result, contamination of the hearing protection capsules 20 is avoided.

In Fig. 5 the hearing protection capsules 20 are shown schematically in an operating position 70. In this position, the earmuffs-20 are sprung to the head of the user 38 out and press against the head of the user, so that a dense system is ensured.

Fig. 4 shows the hearing protection capsule 20 in a rest position 71. In this position, the earmuff 20 has to the in Fig. 4 schematically indicated head of the user 38 a distance. In this position, the earmuffs 20 shield the ears of the user 38 only insignificantly, so that the user 38 can hear well.

As the Fig. 4 and 8th show, the spherical bearing 23 comprises a clamping plate 25 with an edge 26, which seen from the user 38 projects outwardly to the bearing plate 31. The edge 26 abuts against a spherical portion 66 of the bearing plate 31. The spherical section 66 of the spherical bearing 23 may, for example, be a section of a spherical surface. The spherical portion 66 has an opening 32 whose diameter is slightly smaller than the inner diameter of the edge 26 of the clamping plate 25. The clamping plate 25 has a threaded connector 27 with an internal thread, which projects through the opening 32 to the outside. The threaded connector 27 extends through an opening 24 of the retaining clip 21. The threaded connector 27 and the opening 24 are provided with a non-circular contour, so that the clamping plate 25 relative to the headband 21 is not rotatable. On the retaining bracket 21, the operating wheel 28 is arranged, which has a threaded bolt 36 which is screwed into the internal thread of the threaded connector 27. The threaded bolt 36 and the threaded connector 27 may be formed by a pressed-in thread or a pressed-in or injected screw.

Also, the headband 21 is formed spherically in the region of the spherical portion 66, so that the spherical portion 66 rests against the headband 21. To the rotational position the hearing protection capsule 20 relative to the headband 21 to change about the first axis of rotation 30, the operating wheel 28 is rotated and so the clamping between the operating wheel 28, the headband 21, the bearing plate 31 and the clamping plate 25 is released. When the clamping is released, the bearing plate 31 can be moved relative to the retaining bracket 21. The maximum displacement is limited by the inner periphery of the opening 32 to which the threaded connector 27 may rest. In this case, an adjustment in the longitudinal direction of the retaining clip 21 is possible. The shift possibility exists in all directions given by the sphere.

The ear protection capsule 20 facing away from the end of the retaining clip 21 is mounted on an inner holder 41. The inner holder 41 comprises an inner plate 42 and an outer plate 43, which are screwed together by two screws 45. At the opposite side of the screws 45 inner plate 42 and outer plate 43 may be positively connected to each other. For this purpose, the outer plate 43 has a hook 63, which projects behind an edge 64 of the inner plate 42 and so inner plate 42 and outer plate 43 in the direction of the second axis of rotation 65 connects to each other. However, it can also be provided a further screw. The inner plate 42 and the outer plate 43 form a largely closed housing. Between the inner plate 42 and the outer plate 43, a spring ring 44 is arranged, which is formed open on its side facing away from the headband 21. The spring ring 44 is supported on the side walls of the inner plate 42. On the inner plate 42, a receptacle 46 is provided for bearing pin 40 of the retaining clip 21, with which the headband 42 to the in Fig. 4 shown pivot axis 69 between the operating position 70 and the rest position 71 can be pivoted.

As Fig. 4 shows, the spring ring 44 is applied to the headband 21. In the in Fig. 4 shown rest position 71 of the spring ring 44 is disposed with its voltage applied to the bracket 21 on the inner panel 42. The spring ring 44 is in the rest position 71 in a recess 39 of the retaining clip 21. If the headband 21 is pivoted inwardly toward the user 38, the spring ring 44 is pressed perpendicular to the pivot axis 69 until the spring ring 44 with its voltage applied to the bracket 21 outside area the pivot axis 69 is located. In the operating position 70 of the spring ring 44 is located in a recess 73 which is disposed adjacent to the recess 39. In the operating position 70 of the spring ring 44 acts in the opposite direction about the pivot axis 69 and presses the earmuff 20 to the user 38th

The inner holder 41 is held between a base plate 51 and a cover plate 59 of the holder 22. In order to allow an adjustability of the retaining clip 21 in the direction of the vertical 37, the inner plate 42 has a slot 49 and the outer plate 43 has a slot 50. The slots 49 and 50 extend in the longitudinal direction of the retaining clip 21. Through the slots 49 and 50 protrudes a Fixing screw 61, which fixes the bracket 22 on the helmet 2 and in an in Fig. 4 shown sleeve 58 is screwed. The sleeve 58 has a head 62 which rests against the inside of the helmet 2.

The inner plate 42 has a toothing 47. On the outer plate 43 are two lugs 48 on both sides of the slot 50 arranged. The toothing 47 cooperates with a second toothing 52 of the base plate 51. The base plate 51 has an opening 53 for the fastening screw 61. The teeth 52 and 47 describe an arc which extends upwardly and outwardly. As a result, the retaining bracket 21 is simultaneously adjusted in an adjustment down to the inside. In order to keep the distance between the base plate 51 and the cover plate 59 constant, the outer plate 43 has the two outwardly projecting lugs 48, with the in Fig. 7 shown transverse grooves 68 of the cover plate 59 cooperate. The transverse grooves 68 also describe an upward and outward arc. The distances of the transverse grooves 68 correspond to those of the teeth of the teeth 52 and 47. In an adjustment of the inner holder 41 down the inner holder 41 is thereby pressed closer to the base plate 51, while increasing the distance to the cover plate 59.

As Fig. 6 shows, the base plate 51 has on its side facing the helmet 2, a toothing 67 which extends annularly around the opening 53. Between the helmet 2 and the base plate 51, a sheet metal ring 54 is arranged, which has two oppositely arranged locking lugs 55 which cooperate with the toothing 67 of the base plate 51 and define detent positions of the bracket 22 relative to the helmet 2, when the holder 22 about the second axis of rotation 65 is pivoted. The metal ring 54 has recesses 57, protrude into the lugs 56 of the helmet 2, so that the metal ring 54 is held against rotation on the helmet 2. The cover 59 has an opening 60 through which the fastening screw 61 protrudes. To adjust the vertical position of the retaining clip 21 on the helmet 2, the fastening screw 61st solved. Once the connection between the base plate 51 and the cover plate 59 is loosened, the inner holder 41 can be moved relative to the helmet 2 in the longitudinal direction of the holding bracket 21. Once the headband 21 is in the desired position, the mounting screw 61 is tightened again. In order to pivot the retaining bracket 21 about the rotation axis 65, no loosening of the fastening screw 61 is necessary. Due to the elasticity of the sheet-metal ring 54, the holder 22 can be rotated when the fastening screw 61 is tightened.

In Fig. 8 the joint 5 is shown in detail. The joint 5 has a first lever 6 and a second lever 7, which are respectively fixed to the helmet 2 and the headband 4 of the face guard 3. The first lever 6 is fixed at an attachment point 9 on the helmet 2 and at an attachment point 10 on the headband 4. The second lever 7, which is formed longer than the first lever 6, is fixed to an attachment point 11 on the helmet 2 and at an attachment point 12 on the headband 4. The attachment point 11 is seen by a user 38 from the attachment point 9 of the first lever 6 arranged. The attachment point 12 is arranged in front of and below the attachment point 10 of the first lever 6. On the second lever 7, a helical tension spring 8 is fixed to an attachment point 13. The other end of the coil spring 8 is arranged at an attachment point 14 on the helmet 2. The spring 8 defines the two positions of the face shield 3, namely the operating position 74 and the inoperative position 75. On the headband 4, a fixing 19 is arranged on each side, on which the frame 18 of the face shield 17 is fixed.

The design of the holder 22 and the inner holder 41, in particular the structural design, as well as the formation of the face shield 17 from a preformed plastic independent inventive ideas, which may be provided regardless of adjustability of the rotational position of the earmuff 20 on the headband 21 can.

Claims (14)

1. Protective headgear combination with a helmet (2) and with at least one hearing protection capsule (20) fixed onto the helmet (2) in such manner that the rotation position of the hearing protection capsule (20) relative to the helmet (2) can be adjusted around a first pivot axis (30), such that when a user (38) holds his head upright the protective headgear combination (1) makes an angle (α) with the vertical direction of less than 45°, such that the hearing protection capsule (20) is fixed onto the helmet (2) by means of a holding bracket (21),
   characterised in that the position of the holding bracket (21) relative to the helmet (2) when the head of the user (38) is upright can be adjusted approximately in the vertical direction, an inner holder (41) being arranged on the holding bracket (21) at its end remote from the hearing protection capsule (20), such that the position of the said inner holder (41) can be adjusted relative to the helmet (2).
2. Protective headgear combination according to Claim 1,
   characterised in that the hearing protection capsule (20) is held onto the helmet (2) by a holding bracket (21), and the first pivot axis (30) extends in particular approximately parallel to the long direction of the holding bracket (21).
3. Protective headgear combination according to Claim 2,
   characterised in that the rotation position of the hearing protection capsule (20) relative to the holding bracket (21) is adjustable.
4. Protective headgear combination according to any of Claims 1 to 3, characterised in that the hearing protection capsule (20) is fixed on the helmet (2) by means of a spherical mounting (23), the spherical mounting (23) comprising in particular a mounting plate (31) with a spherical section (66) and a releasable clamping device, such that the spherical section (66) of the mounting plate (31) can advantageously be fixed in various positions on the holding bracket (21) by means of the said clamping device.
5. Protective headgear combination according to any of Claims 2 to 4, characterised in that the hearing protection capsule (20) is held on the holding bracket (21) in such manner that it can pivot about a pivot axis (29) which is substantially horizontal when the head of the user (38) is held upright.
6. Protective headgear combination according to any of Claims 2 to 5, characterised in that gearteeth (47) are arranged on the inner holder (41), by means of which various positions of the inner holder (41) relative to the helmet (2) are defined.
7. Protective headgear combination according to any of Claims 2 to 6, characterised in that the holding bracket (21) with the hearing protection capsule (20) can be adjusted relative to the helmet (2) between an operating position (70) in which the hearing protection capsule (20) rests against the head of the user (38), and a rest position (71) in which the hearing protection capsule (20) is a lateral distance away from the head of the user, and in particular the protective headgear combination (1) comprises a holding device which holds the holding bracket (21) in the said operating position (70) and in the said rest position (71), the said holding device advantageously being arranged in the inner holder (41) and comprising a spring designed as an open ring spring (44).
8. Protective headgear combination according to Claim 7,
   characterised in that the holding bracket (21) can be moved from the rest position (71) to an out-of-the-way position (72) such that in the said out-of-the-way position (72) the hearing protection capsule (20) is arranged in the rear area of the helmet (2) a distance away from the helmet (2).
9. Protective headgear combination according to Claim 8,
   characterised in that for the out-of-the-way position (72) the holding bracket (21) is held on the helmet (2) in such manner that it can be moved about a second pivot axis (65), such that when the head of the user (38) is held upright the said second pivot axis (65) makes an angle (β) of more than 45° with the vertical direction (37), the holding bracket (21) being in particular fixed on the helmet (2) by means of a holder (22), and the holder (22) advantageously being fixed on the helmet (2) so that it can be adjusted relative to the helmet (2) around the said second pivot axis (65).
10. Protective headgear combination according to Claim 9,
    characterised in that the holder (22) comprises a first set of teeth (67) which co-operate with at least one detent catch (55) and determines fixed positions of the holder (22) relative to the helmet (2), the said first set of teeth (67) advantageously being formed in a baseplate (51) of the holder (22) and the baseplate (51) advantageously having in particular a second set of teeth (52) which co-operate with the inner holder (41).
11. Protective headgear combination according to any of Claims 2 to 10,
    characterised in that the holding bracket (21) is of inherently stable shape.
12. Protective headgear combination according to any of Claims 1 to 11,
    characterised in that the protective headgear combination (1) comprises a visor (3) which can be arranged in an operating position (74) and in an out-of-the-way position (75) on the helmet (2).
13. Protective headgear combination according to Claim 12,
    characterised in that in its out-of-the-way position (75) the visor (3) is outside the field of vision of the user (38).
14. Protective headgear combination according to Claims 12 or 13,
    characterised in that the visor (3) comprises a visual protection pane (17) made from pre-formed plastic.

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