Head mount with a visor and a headband

Abstract

A head support (1) for a visor, having a headband (2) which has a curved region (3) extending in an x axis direction and two branch regions (4, 5) extending perpendicularly thereto in a z axis direction, is characterized in that extended portions (7, 8) extend on the branch regions (4, 5) perpendicularly with respect to the plane (6) of the head support. These extended portions (7, 8) make it possible to fasten a planar visor (14) to the head support (1) when it is not yet bent, and they permit an airtight closure between the head of the wearer and the head support (1) and also allow different devices to be attached to the wider portion.

Description

[0001] The invention relates to a head mount with a visor and a headband, which has an arc extending in an x-axis direction and two leg regions extending perpendicular to it in a z-axis direction, such that the headband lies in an xz-plane, wherein extensions (7, 8) extend perpendicular to this xz-plane (6) on the leg regions (4, 5) in a y-axis direction and the visor is at least also attached to contact surfaces (16) of the extensions (7, 8).

[0002] A head mount for a visor is known from WO 2021 / 233488 A1. The headband allows technical infrastructure to be housed within the head mount and a visor to be attached to it. DE 102021001500 A1 discloses the preamble of claim 1.

[0003] These types of headgear are protective devices worn on or around the head and fall under the category of personal protective equipment and medical devices. They serve to protect people from airborne biological and chemical contaminants. However, they are also suitable for other applications.

[0004] Based on this state of the art, the invention aims to provide a head support for face protection with high wearing comfort for continuous use in order to increase the level of protection without requiring a complex construction that restricts freedom of movement.

[0005] This problem is solved with a head mount according to claim 1. Advantageous further developments are the subject of the dependent claims.

[0006] The extension described in claim 1 is particularly applicable with regard to the further embodiments described in the dependent claims, regardless of the type and shape of the headband and can be used for other visor holders.

[0007] The extension allows a face-curved visor to be attached. When using flat visors, these can be bent, and the extensions on both sides of the headband help to hold the visor in its curved shape.

[0008] The extensions are preferably hollow to accommodate insulating materials, electronic components, or air filters. Electronic components such as circuit boards, batteries, switches, or headphones can be integrated. This allows for simple designs and optimal weight distribution on the head mount.

[0009] The extension can also be designed so that it rests against the headrest when the head is leaned against it. Furthermore, the extensions shift the center of gravity of the head support downwards along the z-axis, towards the extension.

[0010] Furthermore, microphones or extraction systems may also be installed on the extensions.

[0011] Since fans are arranged in the headband, the extensions protect the wearer of the headband from noise and vibrations, especially when the fans are located on a rear side of the headband facing away from the curved front part of the headband.

[0012] An advantageous embodiment provides that the extension in the x-axis direction has a length between 3 cm and 20 cm, and preferably about 8 cm. In the z-axis direction, a width between 0.2 cm and 6 cm, and preferably about 2.5 cm, is advantageous. Furthermore, it is advantageous if at least one of the extensions in the x-axis direction has a depth between 0.5 cm and 8 cm, and preferably about 4 cm. A downwardly tapered conical shape is achieved if the form of at least one of the extensions tapers away from the headband in the y-axis direction. This results in an ergonomic and stable shape for the head support.

[0013] It is particularly advantageous if at least one of the extensions has a pad in the x-axis direction towards the opposite extension. The pad serves as a support against the head and should therefore be skin-friendly. The pad can also be sound-absorbing. On the one hand, it can be very soft to close any gap between the extension and the head without pressing on the head. On the other hand, it can also be plastically and preferably elastically deformable to ensure the extension is securely positioned on the head.

[0014] Furthermore, the extension, especially with a cushion, can dampen the transmission of forces from the head mount to the head.

[0015] It is particularly advantageous to achieve an airtight seal between opposing extensions and the head. This is also easily accomplished using specially designed cushions.

[0016] The head mount features a visor that is at least partially attached to the mounting surfaces of the extensions. The extensions thus form a form-defining support structure for the visor's attachment.

[0017] The shape of the visor can be determined by the extensions. Thus, depending on the design of the extension and, in particular, the contact surfaces of the extensions, a visor that can be supplied as a flat plate can take on a specific, predetermined shape during use.

[0018] It is proposed that the contact surfaces lie in a plane which, pivoted about a z-axis in the x-axis direction, extends at an angle α of approximately 5 to 25 degrees towards the opposite extension, forming a plane in the y- and z-axis directions. A visor, curved in cross-section to resemble a curved headband, can thus be pulled towards the head at the extensions in a lower contact area away from the headband, and therefore not extend perpendicularly at the extensions in the contact area, but rather be bent inwards by the angle α.

[0019] The visor can also be slightly curved backwards from the curved mounting surface on the headband downwards, towards the wearer's face. This describes an angle β that results between the front visor surface in the middle of the headband and a lower portion of the visor angled downwards. It is proposed that the mounting surfaces lie in a plane that, pivoted about a y-axis and angled along the x-axis at an angle β of approximately 5 to 25 degrees towards the extensions, extends into a plane in the x- and z-axis directions.

[0020] The extensions thus absorb the forces arising from the forced shaping of the visor.

[0021] To achieve a good and secure fit between the visor and the extensions, it is proposed that the contact surfaces have a groove or step against which the visor rests. This allows for a particularly flush fit of the visor to the extension. This makes it easy to prevent lateral air leakage or ingress.

[0022] Specially shaped visors can be used for such head mounts. However, it is advantageous to use simple, flat visors that are only shaped when attached to the headband and extensions, and are held in shape by the attachment, particularly to the extensions.

[0023] Such extensions can also be attached to any headgear with a visor or face shield, independent of the headband. Examples include construction helmets, caps, welding helmets, and other headgear. The headband can be, for example, U-shaped, oval, or even part of a cap.

[0024] It is advantageous if the visor is flat when not attached to the headband and has a curved top surface where it rests against the headband. The curve on the top surface of the visor, which serves as a face shield, results in a downward-tapering shape when attached to the headband, even though the visor is flat in its straight state and therefore easy to manufacture.

[0025] The headband can have a top surface with a crescent-shaped air intake. This makes it possible to use almost the entire top surface of the headband as an intake area, providing the largest possible cross-section for airflow with minimal disruption to the airflow.

[0026] An embodiment of the invention is illustrated in the figures and is described in more detail below. It shows Fig. 1 a front view of a head mount with extensions on both sides, Fig. 2 a direct front view of the in Figure 1 The head mount shown in Fig. 3 is the orthogonal reference system used to explain the axis directions. Figures 1 and 2 , where the z-axis extends perpendicular to the plane of the sheet, Fig. 4 a side view of the in the Figures 1 and 2 head mount with visor shown, Fig. 5, which is in Figure 4The head mount shown with the section line along section AA, Fig. 6, is the reference system for the views according to the Figures 4 and 5 , where the x-axis extends perpendicular to the plane of the sheet, Fig. 7 a sectional view through the extension according to the in Figure 5 Section line AA shown, Fig. 8 a side view from above of a first alternative embodiment of a head mount, Fig. 9 a front view of the in Figure 8 head mount shown, Fig. 10 a side view of the in Figure 8 The head mount shown, Fig. 11 a side view of a second alternative embodiment of a head mount with a circumferential visor edge, Fig. 12 a front view of the in Figure 11 The embodiment shown, Fig. 13, is a section through the sighting edge along line AA. Figure 13 , Fig. 14 a side view of a third alternative embodiment of a head mount with a circumferential visor edge, Fig. 15 a front view of the in Figure 15 The embodiment shown, Fig. 16, is a section through the sighting edge along line AA. Figure 16 , Fig. 17 a side view of a fourth alternative embodiment of a head mount with a circumferential visor edge, Fig. 18 a front view of the in Figure 18 The embodiment shown, Fig. 19, is a section through the sighting edge along line AA. Figure 19 , Fig. 20 a side view of a fifth alternative embodiment of a head mount with a circumferential visor edge, Fig. 21 a front view of the in Figure 21 The embodiment shown, Fig. 22, shows a section through the sighting edge along line AA. Figure 22 , Fig. 23 a side view of a sixth alternative embodiment of a head mount with a circumferential visor edge, Fig. 24 a front view of the in Figure 24 The embodiment shown, Fig. 25, is a section through the sighting edge along line AA. Figure 24Fig. 26 a front view of a seventh alternative embodiment of a head mount with a circumferential visor edge, Fig. 27 a section along line AA in Figure 26 , Fig. 28 a section along line BB in Figure 26 , Fig. 29 a top view of a visor for a head mount according to the Figures 1 to 11 , Fig. 30 a top view of a visor for a head mount according to the Figures 12 to 28 , Fig. 31 a top view of a head mount, Fig. 32 a view of the in Figure 31 The head mount shown is shown from the front, Fig. 33 a view of the flow conditions at the head mount, Fig. 34 a top view of an alternative head mount, Fig. 35 a sectional view of the head mount shown in Fig. 35. Figure 34 The head mount shown, Fig. 36, is a front view of the head mount. Figure 34The head mount shown, Fig. 37 a view of a head mount with fans arranged side by side, Fig. 38 a view of a head mount with filter, Fig. 39 a rear view of a visor with silencers as a development, Fig. 40 a view of the in Figure 39 The visor shown from above in the mounted state, Fig. 41, is a view of the visor shown in Fig. 41. Figure 39 The visor shown from a slant below, Figs. 42 to 46 the airflow through the headband, Figs. 47 to 50 an advantageous design of the headband, Figs. 51 to 55 the attachment of a curved visor to the headband, Figs. 56 to 60 the process of hooking the visor onto the headband and Figs. 61 to 63 the interaction of the headband with electronic instruments.

[0027] The details according to the invention are particularly the Figures 31 to 36 to be taken.

[0028] The one in Figure 1The head support 1 shown has a headband 2, which has an arc-shaped section 3 extending in an x-axis direction and two leg sections 4 and 5 extending perpendicular to it in a z-axis direction. The headband thus lies in an xz-plane 6. Perpendicular to this xz-plane 6, extensions 7 and 8 extend along the leg sections 4 and 5 of the headband 2 in a y-axis direction.

[0029] Extensions 7 and 8 each have a cavity 9 in which electronic components and air filters (not shown) are arranged.

[0030] 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.

[0031] In the y-axis direction away from the bracket towards the lower end of the extension, the width 11 and the depth 12 taper.

[0032] Both extensions have a pad 13 or 14 respectively in the x-axis direction towards the opposite extension. This pad is made of an elastic foam material that fills the space between the extension and the head of the wearer of the head support.

[0033] The Figures 4 , 5 and 7 show the visor 15, which is bent around the headband 2 and rests on contact surfaces 16 at the thigh areas 4 and 5.

[0034] The contact surfaces 16 are curved such that the sight 15 is bent at an angle α towards the head of the wearer and rests against the contact surface 16 at an angle β from a plane in the xz-axis direction.

[0035] At extension 7, a step 17 is provided in the facility area 16, which facilitates the installation of the sight 15 on the facility surface 16 and ensures the most airtight seal possible.

[0036] The other figures show alternative embodiments with a slightly differently shaped sight, contact surfaces on the extensions, a contact surface on the headband, and a contact surface on a bow holder. The bow holder serves, on the one hand, to direct the airflow from the sight to the sight holder. On the other hand, the bow holder can also hold the sight in a curved shape if it is not already held in an optimally curved shape by the other contact surfaces.

[0037] The arc bracket is preferably curved in the xz-plane and in the y-axis direction. It can be configured as shown in Figure 8The bow holder can be shaped approximately like a spherical wedge or, as in the further embodiments, as a lip. The bow holder, and in particular the lip, can have a notch that allows the bow holder to be attached to the sight. Depending on the application, the lip can be curved and shaped differently. A bow holder with a Y-shaped cross-section, as shown in [reference to illustration], is advantageous. Figure 19 shown or a branched cross-section, as in Figure 22 shown.

[0038] The Figure 27 shows how the visor can be inserted into an extension if a corresponding slot is provided in the extension for this purpose.

[0039] Fluid mechanics tests have shown that air vortices are created by flow separation at the visor edge. This draws in outside air behind the visor, into the space between the face and the visor. To prevent this, the cleaned airflow from the headgear can be significantly increased. Therefore, such designs require particularly large filters and powerful, large fans. This can lead to eye strain due to excessive airflow.

[0040] For this reason, in the further exemplary embodiments and in particular in Figure 13The image shows the inner airflow being deflected towards the face by an inward-curving edge. These flow-redirecting edges are also known as winglets. The deflection of the airflow by the winglet results in the airflow being slowed down on the inside. This increases the static pressure of the filtered air at the winglet in the area between the visor and the face. The resulting difference in static pressure in front of and behind the visor (low in front of the visor, high behind the visor) prevents unfiltered air from flowing behind the visor and thus in front of the mouth and nose.

[0041] Alternatively, the external, contaminated airflow can be used as in Figure 16The airflow is directed outwards, away from the face, by a winglet at the visor edge. This also makes it more difficult for contaminated air to penetrate towards the gap between the visor and the face, as the dynamic airflow is thus directed away from the winglet.

[0042] The combination of the previously described winglets unites both operating principles and optimizes the airflow at the visor edge – as in the Figure 19 As demonstrated, the pressure difference and redirection of the airflow can thus prevent the ingress of contaminated air in laminar flow and at the same time better retain the purified air in the space between the visor and the face.

[0043] Since a combination of laminar and turbulent flow will usually prevail at the visor edge, it may be necessary to further enhance the two described principles of operation. A series of two or more winglets arranged one behind the other, both inside and out, should create a kind of "capture chamber" for the flow (see Fig. 22 In these chambers, the kinetic energy of the turbulent flow is slowed down. This is intended to ensure that the higher static pressure behind the visor plus the kinetic energy of the outgoing, purified air is greater than the kinetic energy of the incoming, contaminated air.

[0044] However, due to the design, an air gap occurs in the chin area. Another version of the winglet, which is found in the Figures 23 to 25The design shows that the winglet is extended by a trough-like shape in the chin area to reduce the gap at the chin. The inner and outer wings, which are located in the Figure 13 , 16 , 19 and 22 The features shown can also be retained in this form.

[0045] The visor is preferably attached in a groove. This groove is preferably located in the head mount, the surrounding edge, and the chin bar. Since the surrounding visor edge can also be connected to the head mount via a click or bayonet fitting, the originally flat visor is integrated and secured within the overall construction. The shape can also be influenced by the surrounding visor edge, allowing not only the [missing information - likely a specific feature or design element] Figure 29 not only the special form shown, but also a simple form of visor, as seen in the Figure 30shown.

[0046] The Figures 31 to 33 show how the airflow pattern after exiting the fan is determined by the direction of rotation of the fan and how this leads to an associated swirl of the air.

[0047] The greatest need for fresh air is in front of the mouth and nose, therefore in the center under the head mount 1. If a counterclockwise rotating fan 20 and a clockwise rotating fan 21 are installed in the head mount 1, the airflow in front of the face can be improved. Due to the swirl and the direction of rotation, the main airflow direction 22 points towards the center of the visor and thus in front of the mouth and nose.

[0048] The excess air helps to keep contaminated ambient air away from the lower part of the visor. The swirl creates further, smaller flow separations, which are directed both inwards 23, thus supplying the nose and mouth area with purified air, and outwards 24.

[0049] In particular, the outward airflow (24°) prevents the lateral ingress of contaminated air. This effect can be achieved either by the different rotation directions of the fans or in other ways, such as air guide structures at the fan outlet.

[0050] As already described, the greatest need for fresh air is in the center in front of the mouth and nose. This area must therefore be targeted with a specific airflow. If differently rotating fans are not installed, a directed airflow 22 can be achieved by setting the fans 20, 2126 in the head mount 1 to an angle alpha between 0° and 20°. This is in the Figures 34 to 36 shown.

[0051] The basic path of the air is from top to bottom through the head mount, as in the Figure 37 and 38 shown. The fans 27 are installed horizontally in the head mount 1. Air is drawn in from above 28, cleaned by a filter membrane 29 and blown out downwards 30.

[0052] The mounting of the visor 31 on the head mount 1 proceeds as described in the Figures 39 to 41This is shown to result in a natural curvature of the visor. While the curvature improves the airflow, it also contributes to the noise level of the fans and the airflow being directed outwards towards the ears.

[0053] As a barrier against sound and also against air penetrating from the outside, it is used in the Figures 39 to 41 A seal (2) is shown. This is mounted inside the visor, it interrupts sound transmission and prevents cross-contamination from contaminated air penetrating from the rear.

[0054] The Figures 42 to 46 Reference numerals denote identical parts. A crescent-shaped filter 32 is provided on the upper side of the headband 1, through which air flows, designated as incoming air 33 and outgoing air 34. This air flows perpendicular to the filter 32 and is only slightly deflected by the visor.

[0055] Even the Figures 47 to 50Show identical parts with the same reference symbols. The one already in the Figures 42 to 46 The headband shown consists of a lower part 51, a filter 52 and an upper part 53. The filter 2 is clamped between the lower part 51 and the upper part 53 and the upper part is hooked to the lower part to hold the parts together.

[0056] A specially shaped visor is included in the Figures 51 to 55The visor has a top surface with a curved edge R and is manufactured as a flat surface. When this visor is placed against the U-shaped curve of the headband, the visor takes shape, creating an angle δ between a perpendicular to the headband and the visor in the center of the visor. At the sides of the visor, an angle ε is created between a perpendicular to the headband and the visor. The angles δ and ε are between 5 and 15 degrees, preferably around 10 degrees, to direct the air flowing downwards towards the wearer's face. In all embodiments, the visor is attached only to the headband, allowing the air entering from above to escape without resistance in the lower part of the visor.

[0057] The Figures 56 to 60This demonstrates how the visor can be attached to the headband with just a few hooks, and in this example, even with only three. For this purpose, the lower part of the headband is made from two injection-molded parts joined together. A central hook on the lower part of the headband's lower section is inserted into an opening on the visor. The visor can then be bent and placed under the contact surfaces of the upper part of the lower headband's lower section. Finally, the visor is bent until openings on the side of the visor engage with hooks on the lower part of the headband's lower section. The visor is thus securely attached between the contact surfaces of the upper part of the headband's lower section and the hooks on the lower part of the headband's lower section.

[0058] The Figures 61 to 63The diagram shows how a transmitter 61, which can preferably also serve as a receiver, can be connected to fixed or mobile devices 62, such as electronic watches, mobile phones, laptops, or directly or indirectly to a cloud 63. This makes it possible to record and evaluate the usage data of the head mount directly in the head mount and / or to collect and evaluate it at a central location.

Claims

1. A head mount (1) with a visor (15) and a headband (2) that has an curved region (3) extending in an x-axis direction and two leg regions (4, 5) extending perpendicularly thereto in a z-axis direction, so that the headband lies in an x-z plane (6), wherein, at each leg section (4, 5), extensions respectively extend, perpendicular to this x-z plane (6), in a y-axis direction, and the visor is also attached at least to contact surfaces (16) of the extensions (7, 8), characterized in that a counterclockwise rotating fan (20) and a clockwise rotating fan (21) are built into the headband, and the main flow direction of the air (22) is directed toward the center of the visor (15) and thus in front of the mouth and nose due to the angular momentum and the direction of rotation.

2. The head mount according to claim 1, characterized in that at least one of the extensions (7, 8) defines a cavity (9).

3. The head mount according to one of the preceding claims, characterized in that an electronic component and / or an air filter is arranged in at least one of the extensions (7, 8).

4. The head mount according to one of the preceding claims, characterized in that at least one of the extensions (7, 8) has a length (10) between 3 cm and 20 cm, and preferably of about 8 cm, in the y-axis direction.

5. The head mount according to one of the preceding claims, characterized in that at least one of the extensions (7, 8) has a width (11) between 0.2 cm and 6 cm, and preferably of about 2.5 cm, in the z-axis direction.

6. The head mount according to one of the preceding claims, characterized in that at least one of the extensions (7, 8) has a depth (12) of between 0.5 and 8 cm, and preferably of about 4 cm, in the x-axis direction.

7. The head mount according to one of the preceding claims, characterized in that at least one of the extensions (7, 8) has a pad (13, 14) in the x-axis direction facing the opposite extension (7, 8).

8. The head mount according to claim 7, characterized in that both opposing pads consist of an elastic foam material that fills a space between the extension and a head of a wearer of the head mount.

9. The head mount according to one of the preceding claims, characterized in that the contact surfaces (16) lie in a plane which extends, pivoted about a z-axis, in the x-axis direction at an angle α of approximately 5 to 25 degrees towards the opposite extension (7, 8) toward a plane in the y- and z-axis direction.

10. The head mount according to one of the preceding claims, characterized in that the contact surfaces (16) lie in a plane which extends, pivoted about a y-axis, in the x-axis direction at an angle β of approximately 5 to 25 degrees toward the extensions (7, 8), angled towards a plane in the y- and z-axis direction.

11. The head mount according to one of the preceding claims, characterized in that the visor has contact surfaces (16) on the extensions (7, 8), a contact surface (16) on the headband, and a contact surface on a curved mount, and the curved mount is curved in the x-z plane and in the y-axis direction.

12. The head mount according to one of the preceding claims, characterized in that the visor (15) is flat in a state in which it is not attached to the headband (2) and has a curved upper surface in the contact area on the head mount.

13. The head mount according to one of the preceding claims, characterized in that the headband has an upper side that has a crescent-shaped air intake surface.

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