Patent Application
20220039499
The disclosure relates to a skull mounting system for headgear, preferably a respirator hood, comprising a headband consisting of a material with limited elasticity, which consists of a front headband and a rear headband, wherein the front headband extends around at least around the front side of the head of a wearer and the rear headband is found on the back of the head of the wearer, and at least one upper headband is provided, which extends over the top of the head of the wearer.
The disclosure also relates to head gear with such a skull mounting system.
A skull mounting system according to the type mentioned above is disclosed in GB2098459B. The skull mounting system described there has a headband consisting of a front headband and a rear headband. A rubber-cushioned length compensation mechanism is provided between the front headband and the rear headband, which connects the front headband and the rear headband together and ensures that the headband is elastically expandable in length. An upper headband is also provided, which is connected by means of connection parts to the headgear, in this case a protective helmet. The upper headband consists of several individual straps and is intended to take up the force that develops during impact to the protective helmet.
One aspect of the disclosure relates to a skull mounting system with improved wearing comfort.
Preferred embodiments are also disclosed herein
In one embodiment, the skull mounting system according to the disclosure for headgear, preferably a respirator hood, includes a headband with a front headband and a rear headband, wherein the front headband extends around at least the front of the head of the wearer and the rear headband is found on the back of the head of the wearer, and at least one upper headband is provided that extends over the top of the head of the wearer, wherein the upper headband has higher elasticity than the front and rear headbands.
The upper headband preferably also has lower rigidity or higher flexibility than the front and/or rear headbands.
The wearing comfort of the skull mounting system is significantly increased with the disclosed system. Additionally, accompanying phenomena, such as the cutting-in of the edges of the banding and pressure spots or bruises, can be prevented or reduced.
A component of higher elasticity is understood to mean a component that has a multiple length increase relative to a component of lower elasticity in the direction of elongation during the application of a force. The direction of elongation is the direction of the corresponding component in which the component is mostly stressed during the intended use.
The direction of elongation in the front, rear and upper headbands correspond to the length direction of the bands. The elasticity of the bands is particularly dependent on the geometry (length, width, thickness, recesses, grooves, etc.) and on the employed material.
It is particularly advantageous if the upper headband consists of a rubbery material. The forces that occur, for example, by movement of the wearer's head, can be cushioned with particular comfort by a rubber-elastic headband.
The upper headband preferably consists of 71% PES and 29% elastodiene and preferably has an elongation above 10%, preferably above 50% and an elongation below 150%, especially an elongation of 95%. The material thickness of the upper headband is preferably between 1 millimeter and 3 millimeters, the width preferably between 20 millimeters and 40 millimeters. The upper headband is especially a textile rubber strap.
The rear band is preferably made from a material different from that of the front and upper headband, especially the rear headband is made from a more wear-resistant material than the front and/or upper headband. The material of the front headband preferably has a lower torsion and bending strength than the material of the rear headband.
It is particularly advantageous if the material from which the front headband is made is a fiber-reinforced plastic. The Shore hardness of the front headband is advantageously more than 5 Shore-D and less than 70 Shore-D, especially less than 60 Shore-D.
The material from which the front headband is made is preferably a thermoplastic elastomer, preferably with a surface resistance between 104 and 109Ω. The average material thickness of the front headband, for example, is between 2 millimeters and 4 millimeters, the width between 20 millimeters and 40 millimeters.
The material from which the rear headband is made is preferably a polyamide with a modulus of elasticity between 600 MPa and 2000 MPa. The Shore hardness of the rear headband is advantageously more than 80 Shore-D, particularly more than 83 Shore-D and less than 120 Shore-D. The surface of the cross section of the rear headband amounts to more than 1% of the cross-sectional surface of the front headband and no more than 50%, preferably no more than 30%.
It is particularly advantageous if several upper headband sections, particularly three upper headband sections, are guided over the top of the head of the wearer, wherein preferably the lengths of the upper headband sections overlap once and/or the upper headband sections form a coherent upper headband. It is particularly advantageous if the upper headband sections are connected to each other at the ends, preferably in one piece. A particularly simple and therefore cost-effective solution is provided by this configuration.
The unloaded front headband preferably has a convex arch at least in areas, extending along the length of the front headband in an area that can come into direct or indirect contact with the forehead of the wearer when worn. The cutting-in of the edges of the front headband is prevented by such arching.
It is also particularly advantageous if the unloaded front headband has a concave arch at least in areas that can come into direct or indirect contact with the lateral sides of the head of the wearer while worn, in which case the arch extends along the length of the front headband. It is particularly advantageous if the convex arch changes to an opposite arch toward the top and bottom of the front headband. Contact on the head of the wearer is improved by this embodiment.
It is also advantageous if the convex arch and/or the concave arch deforms with a reduction in arching or opposite the arching, when forces act on the front headband in the longitudinal direction, and/or recesses are provided on the headband in the longitudinal direction that are preferably suitable for increasing the elasticity or flexibility of the headband in the vertical direction. Such forces occur, in particular, when the headband is worn by the wearer, the headband being fastened on the wearer's head by a reduction of the inner circumference. A particularly good fit on the wearer's head is achieved by changing the cross-sectional geometry of the front headband.
The front headband is preferably configured so that in the area arranged on the temples of the wearer when worn, partly does not come in contact with the head of the wearer. The term temples does not refer to the anatomical region of the temporal bone, but the area commonly designated as the temples and which is particularly pressure-sensitive. It therefore means an area that lies cranially above the transversal plane at eye level roughly in the area at which the frontal bone contacts the parietal bone. The inside of the front headband can be at least partially back-set in this area (back offset area). The front headband in this area can also have less flexibility than in the adjacent areas. The pressure on the sensitive area of the temples is reduced by this embodiment, which improves wearing comfort.
It is particularly preferred that the rear headband is connected to the front headband by means of swivel joints, preferably in which the swivel joints can be firmly locked in several rotary positions. It is also preferred if the rear headband has a length adjustment by means of which the length of the rear headband can be adjusted. Optimal fit of the headband on the head of the wearer is achieved by such an embodiment.
For fastening of the skull mounting system on the head of the wearer, it is advantageous if the force on the back of the head of the wearer acts in the lower area of the back of the head, since the skull mounting system is thereby pulled further downward. For this purpose, the locking of the swivel joints is necessary. In this connection, it is also particularly advantageous if the rear headband has high rigidity in order to keep the rear headbands in the correct position even during the application of a force. The length adjustment serves to change the inner circumference so that the skull mounting system can be fastened on the head of the wearer. The wearing comfort and fastening of the skull mounting system are therefore improved by the described embodiment.
The front headband can have end sections that extend in the direction of the back of the head when the skull mounting system is worn after a connection point at which the front headband and the rear headband are connected to each other. Fastening to the head gear and to the upper headband is created by such end sections, by means of which the applied forces can be particularly well distributed.
It is advantageous that the upper head band is guided by connection slits in the front headband, preferably in which the ends of the upper headband are loosely clamped into the connection slits on the front headband, so that the length of the upper headband can be adjusted by loosening the clamping. By adjusting the length of the upper headband, the distance between the headgear and skull mounting system can be changed particularly simply and adapted to the shape and size of the head.
The upper headband can be configured wherein it is guided by front connection slits in the front headband in the area arranged on the temples of the wearer when worn and/or wherein the upper headband is guided by rear connection slits on the front headband. The rear connection slits are preferably situated in the end sections of the front headband, which extend in the direction of the back of the head when the skull mounting system is worn after a connection point at which the front headband and the rear headband are connected to each other. A particularly advantageous force distribution can thus be achieved.
The front headband can be configured wherein it has front connection devices for connection to the headgear in the area arranged on the temples of the wearer when worn, which extend upward, and/or wherein two rear connection devices are provided for connection to the headgear. The rear connection devices are preferably situated in the end sections of the front headband that extend in the direction of the back of the head when the skull mounting system is worn after a connection point at which the front headband and the rear headband are connected to each other. A particularly good force transfer between the skull mounting system and headgear is achieved by the corresponding connection devices.
Rear connection devices for connection to the headgear can preferably be provided, which are formed by longitudinal slits into which a fastening part of the headgear can engage, wherein preferably the fastening part can be arranged to be movable along the longitudinal slits. A length compensation between the headband and the headgear can occur through the longitudinal slits so that adjustment to different head sizes and head shapes is made possible.
A headgear, especially a respirator hood with a described skull mounting system, is particularly advantageous, since it is generally worn continuously over long periods of time and the wearing comfort is improved by such a skull mounting system.
A more complete understanding of the present disclosure, and the attendant advantages and features thereof, will be more readily understood by reference to the following description of embodiment examples when considered in conjunction with the accompanying drawings wherein:
Several upper headband sections 9, specifically three upper headband sections 9 are shown, which are guided over the top of the head 7 of the wearer. The lengths of the upper headband sections 9 intersect once and form a coherent one-piece upper headband 8.
It is also shown that the rear headband 6 is connected by means of swivel joints 15 to the front headband 5. The swivel joints 15 can be firmly locked in several rotational positions. The rear headband 6 has a length adjustment 16, by means of which the length of the rear headband 6 can be adjusted.
The front headband 5 has end section 17 that extend in the direction of the back of the head after a connection point 18 at which the front headband 5 and the rear headband 6 are connected to each other.
It is also shown that the upper headband 8 is guided by connection slits 19 in the front headband 5. The ends of the upper headbands 20 are loosely clamped into the connection slits 19 on the front headband 5, so that the length of the upper headband 8 can be adjusted by loosening the clamping.
A front headband 5 is shown in
It is also shown in
The upper headband 8 is configured so that it is guided by front connection slits 21 in the front headband 5 in the area arranged on the temples 26 of the wearer when worn. The upper headband 8 is also guided by rear connection slits 22 in the front headband 5. The rear connection slits 22 are situated in the end sections 17 of the front headband 5, wherein the end sections 17 extend in the direction of the back of the head after the connection point 18 depicted in
The front headband 5 is configured so that it has front connection devices 23 for connection to headgear 2, which extend upward in the area arranged on the temples 26 of the wearer when worn. Two rear connection devices 24 for connection to the headgear 2 are also shown, which are found in the area of the end section 17, in which case the end sections extend in the direction of the back of the head after the connection point 18 depicted in
As is apparent from
It is apparent from
The front headband 5 here is configured so that the convex arch 10 and/or the concave arch 12 is deformed relative to arch 10, 12 when forces are applied in the longitudinal direction on the front headband 5. In order to facilitate this, the headband 4 has the recesses 13 in the longitudinal direction depicted in
It is further shown that a corresponding respirator hood 3 preferably has a visor 27, the visor 27 being clear and transparent in the visual field. The visor 27 is connected to the skull mounting system 1 by means of two additional swivel joints 30, directly or indirectly, and can be tilted upward by means of the additional swivel joints 30. Here, it is advantageous if the transparent part of the visor 27 can be easily changed in order to replace it with a new part when it becomes soiled. The transparent part is made from a clear, transparent plastic part.
The respirator hood 3 also has a hood cover 28, which delimits the respirator hood 3 at least in areas in the form of an enclosure, so that an overpressure develops in the respirator hood 3, preventing particles or pollutants from penetrating into the internal area of the respirator hood 3 from the outside. For this purpose, the respirator hood 3 is supplied compressed air by means of a compressed air connection 29.
It should be understood that the present invention has a plurality of different features which may be utilized separately or in various combinations. It is also contemplated that the various features of the invention may be utilized with known features from the prior art. Although specific combination of features have been described herein, it is contemplated that other combinations of features will be apparent to those skilled in the art and will be formed.
Furthermore, although certain applications are described herein, those of ordinary skill in the art will appreciate other applications for the present invention.
In view of the foregoing, it should be understood that variations and modifications within the spirit and scope of the invention might occur to those skilled in the art to which the invention pertains. Accordingly, all expedient modifications readily attainable by one versed in the art from the disclosure set forth herein that are within the scope and spirit of the present invention are to be included as further embodiments of the present invention. The scope of the present invention is accordingly defined as set forth in the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 20 2020 104596.2 | Aug 2020 | DE | national |
