Helmet

Abstract

A helmet is provided including a helmet shell for spatially defining a head receiving space and an adjustable ventilation arrangement which is in flow-connection with the head receiving space. The ventilation arrangement includes at least one first ventilation device having at least one first ventilation channel running in the helmet shell and a first slider device, which is assigned to the at least one first ventilation channel and which for varying a flow cross section of the at least one first ventilation channel is displaceable between a ventilation channel opening position and a ventilation channel closing position along the helmet shell. The at least one first ventilation device moreover includes a first latching device for latching the first slider device to secure it in at least one predefined latched position.

Claims

1. A helmet, comprising a helmet shell for spatially defining a head receiving space, and an adjustable ventilation arrangement which is in flow-connection with the head receiving space, the adjustable ventilation arrangement comprising: at least one first ventilation device comprising: at least one first ventilation channel extending in the helmet shell, a first slider device assigned to the at least one first ventilation channel and displaceable between a ventilation channel opening position and a ventilation channel closing position along the helmet shell for at least zonally varying a flow cross section of the at least one first ventilation channel, at least one elongated first guide recess formed in the helmet shell for guiding the first slider device between the ventilation channel opening position and the ventilation channel closing position, and a first latching device for latching the first slider device to secure said first slider device in at least one predefined latched position in relation to the helmet shell, wherein the first latching device comprises at least one latch in connection with the first slider device, and at least one counter-latch in connection with the helmet shell for latching interaction with the at least one latch, wherein the at least one counter-latch is arranged facing the head receiving space, wherein the at least one latch is arranged facing away from the head receiving space on the first slider device, wherein the at least one latch and the at least one counter-latch must be disengaged from one another when the first slider device is shifted between the ventilation channel opening position and the ventilation channel closing position.

2. The helmet as claimed in claim 1, wherein said helmet is a protective safety helmet.

3. The helmet as claimed in claim 1, comprising a multiplicity of latched positions for latching the first slider device to secure the first slider device in various latched positions.

4. The helmet as claimed in claim 1, comprising a multiplicity of counter-latches arranged adjacently spaced from one another.

5. The helmet as claimed in claim 4, wherein the counter-latches are arranged adjacently spaced from one another to predefine the at least one predefined latched position.

6. The helmet as claimed in claim 1, wherein a first center plane of the first slider device coincides with a center plane of the helmet.

7. The helmet as claimed in claim 6, wherein the first slider device is displaceable in the center plane of the helmet.

8. The helmet as claimed in claim 1, wherein the first slider device is displaceable between a front latched position and a rear latched position in relation to the helmet.

9. The helmet as claimed in claim 1, wherein the at least one elongated first guide recess extends along the helmet shell.

10. The helmet as claimed in claim 1, wherein the first slider device comprises at least one coupling element arranged in the at least one elongated first guide recess, and which is shorter in a longitudinal direction of the helmet than the at least one elongated first guide recess.

11. The helmet as claimed in claim 1, wherein the first slider device comprises at least one block element for at least zonally varying the flow cross section of the at least one first ventilation channel.

12. The helmet as claimed in claim 11, comprising at least two block elements arranged spaced from one another for at least zonally varying the flow cross sections of the at least two first ventilation channels.

13. The helmet as claimed in claim 1, wherein the at least one first ventilation device comprises one of the group including an air admission device for feeding fresh air to the head receiving space, and a venting device for leading air out of the head receiving space.

14. The helmet as claimed in claim 1, wherein the adjustable ventilation arrangement further comprises at least one second ventilation device, which is arranged spaced from the at least one first ventilation device and which acts in functional opposition to at least the one first ventilation device.

15. The helmet as claimed in claim 1, wherein the at least one counter-latch is formed on an inside of the helmet shell.

16. The helmet as claimed in claim 1, wherein the at least one latch is a latching projection.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) FIG. 1 shows a perspective, exploded view of a helmet according to the invention,

(2) FIG. 2 shows a perspective view of the helmet shown in FIG. 1 in the assembled state,

(3) FIG. 3 shows the detail III identified in FIG. 2, which shows a first ventilation device of the helmet illustrated in FIGS. 1 and 2,

(4) FIG. 4 shows a longitudinal section through the helmet shown in FIGS. 1 and 2,

(5) FIG. 5 shows the detail V identified in FIG. 4,

(6) FIG. 6 shows a top view of the assembled helmet shown in FIG. 2, and

(7) FIG. 7 shows a further perspective, exploded view of the helmet shown in FIG. 1, which in particular illustrates a rear part of the helmet.

DESCRIPTION OF THE PREFERRED EMBODIMENT

(8) A helmet represented in the figures is designed as an industrial safety helmet. The helmet is symmetrical about a center plane EH, which extends in a longitudinal direction 1 of the helmet between its front end 2 and its rear end 3.

(9) The helmet comprises a stable helmet shell 4, which externally spatially defines a head receiving space 5 designed to accommodate the head of a helmet wearer (not shown).

(10) The climate of the helmet shell 4 or the head receiving space 5 can be controlled. For this purpose, the helmet comprises a ventilation arrangement having three independent ventilation devices 6, 7, 8 arranged spaced from one another. The first ventilation device 6 is arranged adjacent to the front end 2 of the helmet shell 4 and is designed as an air admission device. The second ventilation device 7 and the third ventilation device 8 are arranged adjacent to one another and adjacent to the rear end 3 in the helmet shell 4. They are designed as venting devices.

(11) The ventilation devices 6, 7, 8 are basically of identical design construction, but differ in their shape and/or dimensions.

(12) The first ventilation device 6 comprises two elongated first ventilation channels 9, which are arranged spaced from the center plane EH of the helmet and converge in the direction of the front end 2. The first ventilation channels 9 pass right through the thickness of the helmet shell 4. They form air admission channels.

(13) Adjacent to the first ventilation channels 9, the first ventilation device 6 comprises a first elongated guide depression 10, which is formed in the helmet shell 4 and is outwardly open. The first guide depression 10 is inwardly defined by a first guide plate 11 of the helmet shell 4. The first guide plate 11 is recessed in relation to an outer surface 12 of the helmet shell 4 and flush with an adjacent inner surface 13 of the helmet shell 4. The center plane EH of the helmet passes centrally through the first guide depression 10.

(14) An elongated first guide aperture 14, which passes right through the first guide plate 11 in a thickness direction of the helmet shell 4 and opens out towards the head receiving space 5, is formed in the first guide depression 10. The first guide aperture 14 is arranged in a central area of the first guide plate 11. It is arranged spaced from longitudinal edges 15 and longitudinal ends 16 of the first guide depression 10. The first guide aperture 14 has a length in the longitudinal direction 1 of the helmet which is substantially greater than its width perpendicular to the longitudinal direction 1.

(15) Adjacent to the first guide aperture 14 the first ventilation device 6 comprises a multiplicity of separate counter-latches 17, which are formed on the inside of the helmet shell 4 and arranged adjacent to one another. The counter-latches 17 are arranged adjacent to the longitudinal edge 15 of the first guide depression 10 facing the rear end 3 of the helmet. The counter-latches 17 are at different distances from the front end 2 of the helmet and are designed as latching depressions, which in cross section are of triangular or circular segmental shape, for example. They face and are open towards the head receiving space 5. The counter-latches are advantageously spatially defined by latching teeth.

(16) The first ventilation device 6 moreover comprises a first slider device 18, which is symmetrical about a center plane ES and comprises an integral first carrier 19. A latching projection (or latch) 20 protrudes outwards from the end of the first carrier 19. The first carrier 19 and the latching projection 20 are integrally connected to one another.

(17) A first fitting aperture 21 is formed in the first carrier 19.

(18) The first carrier 19 carries two first block plates 22, which run spaced from and obliquely to one another. The first block plates 22 are arranged at an end of the first carrier 19 opposite the latching projection 20. They face towards the front end 2 of the helmet. In its profile each first block plate 22 matches an aperture cross section of a first ventilation channel 9.

(19) The first slider device 18 moreover comprises a first operating grip 23, which is coupled to the first carrier 19 by means of a coupling element 24. The coupling element 24 has a width perpendicular to the center plane EH of the helmet which corresponds to the width of the first guide aperture 14. The first guide aperture 14 is of a length in the longitudinal direction 1 of the helmet which is substantially greater than a length of the first coupling element 24 in the longitudinal direction 1 of the helmet. The coupling element 24 passes through the fitting aperture 21, so that the first operating grip 23 and the first carrier 19 are fixedly connected to one another.

(20) In the assembled state of the helmet the first operating grip 23 is situated in the first guide depression 10. A bottom surface 25 of the first operating grip 23 here faces the first guide plate 11 and externally rests thereon. The coupling element 24 passes through the first guide aperture 14 and the first fitting aperture 21, so that on the inner side the first carrier 19 is held on the helmet shell 4 and the first operating grip 23 is held externally on the first carrier 19. The first block plates 22 are situated adjacent to the first ventilation channels 9, whilst the latching projection 20 is in latched connection with a counter-latch 17, forming a first latching device.

(21) When the first slider device 18 is shifted or displaced through the application, by a helmet wearer, of a corresponding slide force to the first slider device 18 via the first operating grip 23, the bottom surface 25 of the first operating grip 23 slides externally along the first guide plate 11, whilst the first carrier 19 on the inside slides along the helmet shell 4 and shifts in relation to the helmet shell 4. In so doing the first block plates 22 are also shifted in relation to the first ventilation channels 9, which has an influence on their adjacent, open, effective flow cross section. A displacement is preferably possible over a displacement travel of 10 mm to 18 mm.

(22) For shifting the first slider device 18, the latching projection 20 and the respective active counter-latch 17 must be disengaged. A corresponding latch resistance must be overcome. This allows a graduated adjustment. Five to nine latched positions are advantageously provided. The displacement of the first slider device 18 is limited by the first longitudinal edges 16 of the first guide plate 11.

(23) Shifting the first slider device 18 towards the front end 2 of the helmet leads to a zonal reduction in the effective flow cross sections of the first ventilation channels 9. When the first slider device 18 assumes a minimum distance from the front end 2, the first ventilation channels 9 are fully closed by the first block plates 22. When the first slider device 18 is at a maximum distance from the front end 2 of the helmet, the first block plates 22 are preferably located spaced from the first ventilation channels 9, so there is no closure of the first ventilation channels 9. In intermediate positions the first ventilation channels 9 are partially closed.

(24) The second ventilation device 7 and the third ventilation device 8 are of a corresponding design to the first ventilation device 6. For the sake of brevity, reference is made with regard to the construction and operating principle of the ventilation devices 7, 8 to the design of the first ventilation device 6. In the case of the second and third ventilation device 7 and 8 there are in each case preferably between three and seven latched positions. The sliding travel of the respective slider device is preferably between 7 mm and 16 mm.

(25) In the opened state of the first slider devices 18 air is able to flow into the head receiving space 5 from the front via the ventilation channels 9. Cooler ambient air can thus be introduced into the helmet shell 4.

(26) Air from the head receiving space 5 can leave the head receiving space 5 again at the rear via the ventilation devices 7, 8, when the latter are at least partially open. The air warmed by the head of the helmet wearer can be led back out of the helmet shell 4 via the ventilation device 7, 8.

(27) The helmet can thus be easily adjusted, for example, to prevailing external climatic conditions. Furthermore, the helmet can also be individually adjusted to the heat balance of the body of the helmet wearer.