Visor head support

Abstract

A head support (1) for a visor having a headband (2) including a curved region (3) extending in the x-axis direction and two branch regions (4, 5) extending in the z-axis direction perpendicular to the x-axis direction, has extensions (7, 8) extending perpendicular to the face (6) of the head support at the branch regions (4, 5). These extensions (7, 8), when not yet bent, allow a flat visor (14) to be fastened to the head support (1), allowing an airtight closure between the wearer's head and the head support (1), and also allowing various devices to be worn over a wider area.

Description

[Technical Field]

[0001] The present invention relates to a head support with a visor and a headband, the headband having a curved region extending in the x-axis direction, two branch regions in the z-axis direction extending perpendicular to the x-axis direction, and , so that the headband rests in the xz-plane. The extensions (7, 8) extend perpendicular to the xz-plane (6) at the branch regions (4, 5), in each case in the y-direction. A visor is also attached to at least the contact surfaces (16) of the extensions (7, 8). [Background technology]

[0002] Visor head support , a technology known from WO 2021 / 233488. This headband allows the technical infrastructure to be housed in the head support and for the visor to be attached to this head support.

[0003] Such head supports are protective devices worn or wrapped around the head and fall into the category of personal protective equipment and medical devices. They serve to protect people from airborne biological and chemical contaminants, but they are also suitable for other uses. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2021 / 233488 Summary of the Invention [Problem to be solved by the invention]

[0005] Based on this prior art, the object of the present invention is based on providing a head support for a face shield that can be worn continuously with a high level of comfort to improve the level of protection, without the need for complex designs that restrict freedom of movement. [Means for solving the problem]

[0006] This goal is achieved with a head support according to patent claim 1. Advantageous developments are the subject of the dependent claims.

[0007] The extension portion as claimed in claim 1 can also be used independently of the type and shape of the headband and can be used with other visor supports, in particular with respect to the alternative configurations as claimed in the dependent claims.

[0008] This extension allows the visor to be worn curved towards the face. When flat visors are used, they can be curved and the extensions attached to either side of the headband can hold the visor in that curved shape.

[0009] The extension is preferably hollow, so that insulating materials, electronic components, or air filters can be placed in the hollow. Circuit boards, batteries, switches, or headphones can be integrated as electronic components, for example. This allows for a simple design and optimal weight distribution for the head support.

[0010] The extension can also be designed to rest against the headrest when the head is resting against it. The extension also shifts the center of gravity of the head support in the z-axis direction, downward toward the extension.

[0011] Additionally, a microphone or suction device may be located in the extension.

[0012] When the fan is placed on the headband, especially when the fan is placed on the rear surface of the headband facing away from the curved front of the headband, the extension insulates the wearer of the headband from sound and vibration.

[0013] In an advantageous embodiment, the extensions have a length in the x-axis direction of 3 to 20 cm, preferably about 8 cm. A width in the z-axis direction of 0.2 to 6 cm, preferably about 2.5 cm, is advantageous. It is also advantageous if at least one of the extensions has a depth in the x-axis direction of 0.5 to 8 cm, preferably about 4 cm. If at least one of the extensions tapers downward from the band in the y-axis direction, it will have a conical design that narrows downward. This provides an ergonomic and stable shape to the head support.

[0014] It is particularly advantageous if at least one of the extensions has a cushion facing the opposite extension in the x-axis direction. This cushion serves to provide contact with the head and should therefore be embodied in a skin-friendly manner. The cushion can also be sound-absorbing. On the one hand, it can be designed to be very flexible so as to close the space between the extension and the head without exerting pressure on the head. On the other hand, it can also be embodied in a plastic, preferably elastically deformable manner, so that the extension can also be positioned firmly on the head.

[0015] Additionally, the extension, especially with the cushion, can effect the transmission of forces from the head support to the head in a vibration-damping manner.

[0016] It is particularly advantageous if an airtight closure is achieved between the opposing extensions and the head, which can also be easily achieved by using cushions specially designed for this purpose.

[0017] It is advantageous if the head support also has at least a visor attached to the contact surface of the extension, so that the extension forms a shaped support structure for the attachment of the visor.

[0018] The shaping of the visor can be determined by means of the extension: depending on the embodiment of the extension and in particular the contact surface of the extension, the visor, which is attached to the contact surface of the extension and which may be supplied as a flat panel, can adopt a particular predetermined shape during use.

[0019] For this purpose, it is proposed that the contact surface rests on a plane that pivots about the z-axis and extends in the x-axis direction towards the opposite extension at an angle α of approximately 5 to 25° and is angled towards the plane in the y-axis and z-axis directions. The visor, which is curved in a U-shape in cross section, can be pulled towards the head at the lower contact area of ​​the extension, following the curved headband, and away from the headband, so that at the contact area of ​​the extension it does not extend vertically but is curved inwards by the angle α.

[0020] The visor may also be curved slightly downward from the curved contact surface of the headband toward the wearer's face. This defines an angle β, formed between the front of the visor at the center of the headband and the downwardly angled lower region of the visor. To this end, it is proposed that when pivoted about the y-axis, the contact surface rests on a plane that extends in the x-axis direction at an angle β of approximately 5 to 25° toward the extension toward the plane of the x- and z-axes.

[0021] In this way, the extension absorbs the forces resulting from the shaping of the visor.

[0022] In order to achieve a good and firm contact between the visor and the extension, it is proposed that the contact surface has a bead or step against which the visor rests, which allows a particularly flush fit of the visor on the extension to be achieved, which makes it easier to prevent air from escaping or entering from the sides.

[0023] Specially shaped visors can be used for such head supports, but it is advantageous to use a simple, flat visor, which only takes on its shape when attached to the headband and extensions, and which is especially retained by being attached to the extensions.

[0024] Independent of the headband, such extensions can also be attached to any head support that accompanies a visor or face shield, including construction helmets, caps, welding helmets, and other headgear configurations, where, for example, the headband can be U-shaped, oval, or even designed as part of a cap.

[0025] Even if no extension is disposed on the headband, it is advantageous if the visor is flat when not attached to the headband and if the visor has a curved upper surface in the contact area with the headband. The curve in the upper surface of the visor, which serves as a face shield, provides a downwardly tapered shape when attached to the headband, even if the visor is flat when not in the curved state, which makes it easier to manufacture.

[0026] It is particularly important that large volumes of air can flow through the headband with minimal flow resistance so that the air can be filtered there. For this reason, it is also proposed that headbands without extensions have an upper surface with a crescent-shaped air intake surface. This makes it possible to use almost the entire upper surface of the headband as an intake surface, so as to have the largest possible cross section for the introduction of air, with minimal obstruction to the flow.

[0027] Examples of embodiments of the invention are illustrated in the figures and are described in more detail below. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 10 is a front view of a head support with extensions on either side. [Figure 2] FIG. 2 is a front view of the head support shown in FIG. 1. [Figure 3] FIG. 3 shows an orthogonal reference system for describing the axial directions in FIGS. 1 and 2, with the z-axis extending perpendicular to the plane of the page. [Figure 4] FIG. 3 is a side view of the head support with the visor shown in FIGS. 1 and 2. [Figure 5] 5 is the head support shown in FIG. 4 with a cross section taken along cut line AA. [Figure 6] FIG. 6 shows a reference system for what is shown in FIGS. 4 and 5, with the x-axis extending perpendicular to the plane of the page. [Figure 7] 6 is a diagram showing an example of a cross section through an extension portion according to cut line AA shown in FIG. 5. FIG. [Figure 8] 1 is a top side view of a first alternative shape embodiment of a head support. FIG. [Figure 9] FIG. 9 is a front view of the head support shown in FIG. 8. [Figure 10] FIG. 9 is a side view of the head support shown in FIG. 8. [Figure 11] FIG. 10 is a side view of a second alternative shape for an embodiment of a head support, along with the periphery of the visor. [Figure 12] FIG. 12 is a front view of the embodiment shape shown in FIG. 11. [Figure 13] 14 shows a cross section through the edge of the visor along line AA in FIG. 13. [Figure 14] FIG. 10 is a side view of a third alternative shape for an embodiment of a head support, along with the periphery of the visor. [Figure 15] FIG. 16 is a front view of the embodiment shape shown in FIG. 15. [Figure 16] 17 shows a cross section through the edge of the visor along line AA in FIG. 16. FIG. [Figure 17] FIG. 10 is a side view of a fourth alternative shape for an embodiment of a head support, along with the periphery of the visor. [Figure 18]FIG. 19 is a front view of the embodiment shape shown in FIG. 18. [Figure 19] FIG. 20 is a cross-sectional view through the edge of the visor along line AA in FIG. 19. [Figure 20] FIG. 10 is a side view of a fifth alternative shape for an embodiment of a head support, along with the periphery of the visor. [Figure 21] FIG. 22 is a front view of the embodiment shape shown in FIG. 21. [Figure 22] 23 is a cross-sectional view through the edge of the visor along line AA in FIG. 22. [Figure 23] FIG. 10 is a side view of a sixth alternative shape for an embodiment of a head support, along with the periphery of the visor. [Figure 24] FIG. 25 is a front view of the embodiment shape shown in FIG. 24. [Figure 25] 25 is a cross-sectional view through the edge of the visor along line AA in FIG. 24. [Figure 26] FIG. 10 is a front view of a seventh alternative embodiment of the head support, along with the peripheral portion of the visor. [Figure 27] FIG. 27 is a cross-sectional view taken along line AA in FIG. 26. [Figure 28] FIG. 27 is a cross-sectional view taken along line BB in FIG. 26. [Figure 29] FIG. 12 is a plan view of a visor for the head support according to FIGS. 1 to 11; [Figure 30] FIG. 29 is a plan view of a visor for the head support according to FIGS. 12 to 28. [Figure 31] FIG. [Figure 32] FIG. 32 is a front view of the head support shown in FIG. 31. [Figure 33] FIG. 10 is a diagram showing the state of flow in the head support. [Figure 34] FIG. 10 is a plan view of an alternative head support. [Figure 35] FIG. 35 is a cross-sectional view of the head support shown in FIG. 34. [Figure 36] FIG. 35 is a front view of the head support shown in FIG. 34. [Figure 37] FIG. 1 shows a head support with fans arranged side by side. [Figure 38] FIG. 1 shows a head support with a filter. [Figure 39] FIG. 10 is an exploded view of the visor with sound-absorbing material, seen from the rear. [Figure 40] FIG. 40 is an exploded view from above of the visor shown in FIG. 39 in an installed state. [Figure 41] FIG. 40 is a perspective view of the visor shown in FIG. 39, seen from below. [Figure 42] FIG. 10 illustrates the airflow through the headband. [Figure 43] FIG. 10 illustrates the airflow through the headband. [Figure 44] FIG. 10 illustrates the airflow through the headband. [Figure 45] FIG. 10 illustrates the airflow through the headband. [Figure 46] FIG. 10 illustrates the airflow through the headband. [Figure 47] 10A and 10B show advantageous configurations of the headband. [Figure 48] 10A and 10B show advantageous configurations of the headband. [Figure 49] 10A and 10B show advantageous configurations of the headband. [Figure 50] 10A and 10B show advantageous configurations of the headband. [Figure 51] FIG. 10 is a diagram showing how the curved visor is attached to the headband. [Figure 52] FIG. 10 is a diagram showing how the curved visor is attached to the headband. [Figure 53] FIG. 10 is a diagram showing how the curved visor is attached to the headband. [Figure 54] FIG. 10 is a diagram showing how the curved visor is attached to the headband. [Figure 55] FIG. 10 is a diagram showing how the curved visor is attached to the headband. [Figure 56] 10A-10D illustrate the process of hooking the visor onto the headband. [Figure 57] 10A-10D illustrate the process of hooking the visor onto the headband. [Figure 58] 10A-10D illustrate the process of hooking the visor onto the headband. [Figure 59] 10A-10D illustrate the process of hooking the visor onto the headband. [Figure 60] 10A-10D illustrate the process of hooking the visor onto the headband. [Figure 61] FIG. 1 illustrates the interaction of the headband with the electronics. [Figure 62] FIG. 1 illustrates the interaction of the headband with the electronics. [Figure 63] FIG. 1 illustrates the interaction of the headband with the electronics. DETAILED DESCRIPTION OF THE INVENTION

[0029] 1 has a headband 2 having a curved region 3 extending in the x-axis direction and branch regions 4 and 5 extending in the z-axis direction at right angles to the x-axis direction. The headband therefore rests in an xz-plane 6. Extensions 7 and 8 extend in the y-axis direction along branch regions 4 and 5 of headband 2 at right angles to this xz-plane 6.

[0030] The extensions 7 and 8 have in each case a cavity 9 in which electronic components and an air filter (not shown) are arranged.

[0031] Each extension has a length 10 of approximately 8 cm, a width 11 in the z-axis direction of approximately 2.5 cm, and a depth 12 in the x-axis direction of approximately 4 cm.

[0032] The width 11 and depth 12 taper in the y-axis direction away from the band and towards the lower end of the extension.

[0033] In each case, the two extensions have a cushion 13 or 14 towards the opposite extension in the x-axis direction, which is made of a resilient foam material and which fills the space between the extension and the head of the wearer of the head support.

[0034] 4, 5 and 7 show a visor 15 that is curved around the headband 2 and rests against contact surfaces 16 at the branch regions 4 and 5. FIG.

[0035] The contact area 16 curves such that the visor 15 curves towards the wearer's head at an angle α and rests against the contact surface 16 at a slight incline according to an angle β from the plane of the x and z axes.

[0036] A step 17 is provided in the contact area 16 of the extension 7. This makes it easier for the visor 15 to contact the contact surface 16 and ensures a seal that is as gas-tight as possible.

[0037] Other figures show alternative shapes of the embodiment with slightly different shapes of the visor, contact surfaces of the extension, contact surfaces of the headband and contact surfaces of the band holder. On the one hand, the band holder serves to direct the airflow from the visor to the visor wearer. On the other hand, the band holder can also hold the visor in a curved shape if the other contact surfaces are not already holding it in an optimally curved shape.

[0038] The band holder is preferably curved in the xz-plane and in the y-axis direction. It can be designed in a kind of spherical wedge shape, as shown in FIG. 8, or as a lip in other example embodiments. The band holder, and in particular the lip, can have a notch that allows the band holder to be attached to the visor. Depending on the application, the lip can be curved and shaped in different ways. Band holders with a Y-shaped cross section, as shown in FIG. 19, or a bifurcated cross section, as shown in FIG. 22, are advantageous.

[0039] Figure 27 shows how the visor can be inserted into the extension if the extension is provided with the appropriate slots.

[0040] Fluid dynamics tests have shown that air vortices are created by flow separation at the edge of the visor. As a result, outside air is attracted to the back of the visor and enters the space between the face and the visor. To prevent this, the purified airflow from the head support can be significantly increased. For this reason, particularly large filters and powerful and large fans are required for this shape of embodiment. This can endanger the eyes due to excessive airflow.

[0041] For this reason, in other examples of embodiments, and particularly in FIG. 13, the interior airflow is deflected toward the face by edges that curve inward toward the face. These flow-deflecting edges are also known as winglets. Deflecting the airflow by the winglets has the effect of slowing the airflow on the interior surface. This increases the static pressure of the purified air over the winglets in the area between the visor and the face. The resulting static pressure difference at the front and back of the visor (low at the front of the visor, high at the back of the visor) prevents unpurified air from flowing from the back of the visor and therefore in front of the mouth and nose.

[0042] Alternatively, on the outside, the contaminated airflow can be deflected outwardly and away from the face at the edge of the visor by winglets, as shown in Figure 16. This makes it more difficult for contaminated air to enter the gap between the visor and the face, because the dynamic airflow is thereby deflected away from the winglets.

[0043] The winglet combination described above combines both operating principles and optimizes the airflow at the edge of the visor as shown in Figure 19. In the case of laminar flow, the pressure difference and airflow deflection can prevent contaminated air from entering while at the same time maintaining purified air more efficiently in the space between the visor and the face.

[0044] Because a combination of laminar and turbulent flow typically prevails at the leading edge of the visor, it may be necessary to enhance the two operating principles described above. By arranging two or more winglets in a row, one inside and one outside, a type of "collection chamber" for the flow is created (see Figure 22). In these chambers, the kinetic energy of the turbulent flow is relaxed. This ensures that the higher static pressure at the back of the visor plus the kinetic energy of the outgoing cleaned air is greater than the kinetic energy of the contaminated air entering from the outside environment.

[0045] However, due to the design, a gap exists in the jaw area. Another winglet design, shown in Figures 23-25, provides for the winglet to expand by forming a recessed configuration in the jaw area to reduce the gap in the jaw. The internal and external winglets shown in Figures 13, 16, 19, and 22 can also be retained in this configuration.

[0046] Here, the attachment of the visor is preferably embodied in the form of a bead. The bead is preferably located both on the head support and also on the periphery and chin piece. The periphery of the visor can also be connected to the head support via a click or bayonet fastening, and the originally flat visor is attached in a way that integrates and shapes it into the overall design. This shape can be influenced by the periphery of the visor, allowing not only the specific shape shown in Figure 29 but also simple visor shapes such as those shown in Figure 30.

[0047] Figures 31-33 show how the direction of rotation of the fan determines the flow pattern after the air leaves the fan, and how this results in associated air vortices.

[0048] The area where fresh air is most needed is in front of the mouth and nose, i.e. under the center of the head support. If a counterclockwise rotating fan (2) and a clockwise rotating fan (3) are set on the head support (1), the flow behavior in the front of the face can be improved. Due to the vortex and rotation direction, the main direction of the airflow (4) is towards the center of the visor and therefore towards the front of the mouth and nose.

[0049] The excess air can keep contaminated ambient air away from the lower area of ​​the visor. The vortex creates further small flow separations, both of which are directed inwards (5), thereby providing purified air to the nose and mouth area, which also flow outwards (6).

[0050] In particular, the outwardly directed flow (6) prevents contaminated air from entering from the sides, an effect that can be produced on the one hand by different directions of rotation of the fans or in other ways, such as by air guidance structures at the fan outlet.

[0051] As already explained, the area where fresh air is most needed is the center, in front of the mouth and nose. This area must therefore be supplied with a directed airflow. If fans with different rotation directions are not set up, a directed airflow (4) can be achieved by positioning the fan (2) in the head support (1) at an angle alpha (3) between 0 and 20°. This is shown in Figures 34 to 36.

[0052] The basic air path is from top to bottom through the headband as shown in Figures 37 and 38. The fan (2) is set horizontally on the DesCap (1). Air is sucked in from above (3), purified by the filter membrane (2), and blown out below (4).

[0053] Attaching the visor (3) to the head support (1) results in a natural curvature of the visor as shown in Figures 39 to 41. This curvature improves the airflow conditions, but it also contributes to the fan noise level and the airflow being directed outwards towards the ears.

[0054] The seal (2) is shown in Figures 39-41 as a sound barrier and as a barrier to air from the outside environment. It is attached to the inside of the visor and prevents sound transmission and any cross contamination from contaminated air entering from the back.

[0055] Figures 42 to 46 show the same parts with the same reference symbols. A crescent-shaped filter 2 is provided on top of the headband 1 through which air flows. This is designated as air inlet 3 and outlet 4. This air flows at right angles to the filter 3 and is only slightly deflected by the visor.

[0056] Figures 47 to 50 also show the same parts with the same reference symbols. The headband already shown in Figures 42 to 46 consists of a lower part 1, a filter 2 and an upper part 3. The filter 3 is clamped between the lower part 1 and the upper part 3, and the upper part is hooked onto the lower part to hold these parts together.

[0057] A specially shaped visor is shown in Figures 51-55. This visor is manufactured as a flat surface with a curved upper surface with a curved edge R. When the visor is then placed against the curved line of the U-shape of the headband, the visor is shaped to create an angle δ between the center of the visor and a line perpendicular to the headband. On both sides of the visor, an angle ε is created between the visor and a line perpendicular to the headband. The angles δ and ε are between 5 and 15 degrees, preferably about 10 degrees, thereby directing air to flow from above downward toward the wearer's face. In all of the embodiments, the visor is simply attached to the headband, allowing air entering from above to exit the lower area of ​​the visor without resistance.

[0058] 56 to 60 show how the visor can be attached to the headband using only a few hooks, three hooks in the example embodiment. For this purpose, the lower part of the headband is made from two injection moldings that are joined together. One of these is the central hook of the lower element of the lower part of the headband, which is inserted into the opening of the visor. The visor is then bent so that it can be inserted under the contact surface of the upper element of the lower part of the headband. Finally, the visor is bent to such an extent that the openings on the sides of the visor can be hooked into the hooks on the lower element of the lower part of the headband on both sides of the headband. In this way, the visor is firmly fastened between the contact surface of the upper element of the lower part of the headband and the hooks of the lower element of the lower part of the headband.

[0059] Figures 61 to 63 show how a transmitter 1, which can preferably also serve as a receiver, can be connected to a fixed or mobile device 2, an electronic watch, a mobile phone, a laptop or even directly or indirectly to the cloud 3. This allows data on the use of the head support to be recorded and evaluated directly at the head support and / or to be collected and evaluated in a control center.

Claims

1. A head support (1) with a visor (15) and a headband (2), the headband (2) having a curved region (3) extending in the x-axis direction and two separated regions (4, 5) extending in the z-axis direction perpendicular to the x-axis direction, whereby the headband rests on an x-z ​​plane (6), the extensions (7, 8) extending in the branch regions (4, 5) perpendicular to the x-z plane (6) in each case in the y-axis direction, the visor also being attached to the contact surfaces (16) of at least the extensions (7, 8), The head support (1) is characterized in that a counterclockwise rotating fan (2) and a clockwise rotating fan (3) are set on the headband. Head support (1).

2. 2. Head support according to claim 1, characterized in that at least one of said extensions (7, 8) delimits a cavity (9).

3. 3. Head support according to claim 1 or 2, characterized in that electronic components and / or air filters are arranged in at least one of the extensions (7, 8).

4. A head support according to any one of claims 1 to 3, characterized in that at least one of the extensions (7, 8) has a length (10) in the y-direction of 3 to 20 cm, preferably a length (10) of about 8 cm.

5. A head support according to any one of claims 1 to 4, characterized in that at least one of the extensions (7, 8) has a width (11) in the z-axis direction of 0.2 to 6 cm, preferably a width (11) of about 2.5 cm.

6. A head support according to any one of claims 1 to 5, characterized in that at least one of the extensions (7, 8) has a depth (12) in the x-direction of 0.5 to 8 cm, preferably a depth (12) of about 4 cm.

7. A head support according to any one of claims 1 to 6, characterized in that at least one of the extension portions (7, 8) has a cushion (13, 14) towards the opposite extension portion (7, 8) in the x-axis direction.

8. A head support as described in claim 7, characterized in that both opposing pads are made of elastic foam material and fill the space between the extension portion and the head of the wearer of the head support.

9. A head support according to any one of claims 1 to 8, characterized in that the contact surface (16) rests on a surface that pivots about the z-axis and extends in the x-axis direction at an angle α of approximately 5 to 25° relative to the opposite extension part (7, 8) and at an angle directed towards the plane of the y-axis and z-axis directions.

10. 10. A head support according to any one of claims 1 to 9, characterized in that the contact surface (16) rests on a surface that pivots about the y-axis and extends in the x-axis direction at an angle β of approximately 5 to 25° relative to the extensions (7, 8) and at an angle directed towards the planes of the y-axis and z-axis.

11. A head support described in any one of claims 1 to 10, characterized in that the visor has a contact surface (16) on the extension portion (7, 8), a contact surface (16) on the headband, and a contact surface on the band holder, and the band holder is curved in the x-z plane and the y-axis direction.

12. A head support according to any one of claims 1 to 11, characterized in that the visor (15) is flat when not attached to the headband (2) and has a curved upper surface in the contact area of ​​the headband.

13. A head support according to any one of claims 1 to 12, characterized in that the headband has an upper surface with a crescent-shaped air intake surface.

14. An extension (7, 8) for a head support (1) according to any one of claims 1 to 13.

Images