Headgear suspension for headgear, respiratory protection mask, and method of securing headgear

Abstract

The invention relates to a head suspension (1) for a head covering device (2), preferably a respiratory protective mask. The head suspension (1) comprises a head strap (3) having a front head strap (4) and a rear head strap (5), the front head strap (4) encircling the front side of the head of a wearer and the rear head strap (5) being located at the rear side of the head of the wearer, wherein the rear head strap (5) is connected to the front head strap (4) via two rotary joints (6). The rotary joints (6) are at least locally freely rotatable in a respective adjustment position and are not rotatable in a respective locking position.

Description

Technical Field

[0001] The present invention relates to a head suspension for a head covering device, preferably a breathing shield, the head suspension comprising a headband having a front headband and a rear headband, the front headband surrounding the front side of the wearer's head and the rear headband located at the rear side of the wearer's head, wherein the rear headband is connected to the front headband via two rotating joints.

[0002] Furthermore, the present invention relates to a respirator having such a head suspension member and a method for securing a head shield using such a head suspension member. Background Technology

[0003] This type of head suspension is used to secure a head covering, such as a respirator, welding helmet, or protective helmet, to the wearer's head, thus forming a connection mechanism between the user's head and the head covering. This head suspension typically consists of multiple parts, among which, advantageous for fitting the wearer's head, the angle of the rear portion of the head suspension relative to the front portion of the headband or the wearer's head can be adjusted. To secure the head suspension, and thus the head covering, to the wearer's head, a length adjustment mechanism is usually provided, allowing adjustment of the inner circumference of the head suspension. By reducing the inner circumference, a force-fit connection is achieved between the wearer's head and the head suspension.

[0004] A head suspension of the type described in the switch section is disclosed, for example, in JP5899836B2. The described head suspension has a front headband and a rear headband. They are connected to each other on both sides via a rotating joint. The rear headband has teeth and opposing mating elements. The front headband has a pin located in the space between the teeth and the mating elements. The space between the teeth and the mating elements is smaller than the diameter of the pin in the region of the tips of the teeth. This region forms a contraction, and a greater force must be applied at the contraction when the rotating joint rotates to make the pin overcome the contraction. This configuration achieves a structure for maintaining the angle of the rear headband relative to the front headband in a set position. Summary of the Invention

[0005] The basic objective of this invention is to provide a head suspension device having an adjustable angle between the front headband and the rear headband, wherein the angle is determined with high functional safety.

[0006] According to the present invention, a head suspension for a head covering device, preferably a respirator, is provided. The head suspension includes a headband having a front headband and a rear headband. The front headband surrounds the front side of the wearer's head, and the rear headband is located at the rear side of the wearer's head. The rear headband is connected to the front headband via two rotating joints. The rotating joints are at least partially free to rotate in their respective adjustable positions and are not allowed to rotate in their respective locked positions.

[0007] Because the rotating joint differs from existing technology in that it cannot rotate in the locked position, it ensures that no undesirable angular positions are achieved. This is true both when wearing and when not wearing. When wearing, the non-adjustable angle between the front and back headbands ensures a particularly advantageous force distribution between them. This provides secure support to the wearer's head and improves wearing comfort. When not wearing, the angle remains set to match the wearer's preferences, thus eliminating the need for readjustment.

[0008] To secure the head strap to the wearer's head, it is advantageous for the force to act on the back of the wearer's head in the lower region of the back of the head, as the head strap is thus additionally pulled downwards. This is only feasible if the back head strap is angled downwards from the front head strap relative to the wearer's head, and this angle remains unchanged when the head strap is secured or tightened on the wearer's head. If the angle is not locked, the back head strap moves under force along a lateral plane that extends centrally through the front head strap, which hinders or prevents the advantageous force distribution described. Therefore, locking the angle between the front and back head straps prevents the back head strap from moving upwards under force.

[0009] By locking the angle between the front and back headbands, the headband can be made to fit various head shapes or sizes, thus ensuring a comfortable fit for extended periods.

[0010] These two rotary joints can be moved from the adjustable position to the locked position independently of each other.

[0011] Regarding improvements in wearing comfort, it is particularly advantageous that the front headband is made of a softer component than the back headband. Specifically, the front headband is made of a soft yet shape-stable material that conforms exceptionally well to the head. Conversely, the back headband is made of a less elastic and more abrasion-resistant material. This is especially advantageous when the back headband has a length adjustment mechanism, which is less prone to wear but ensures optimal wearing comfort. For this purpose, an even softer, preferably rubber-elastic, material is provided in the upper head area, forming the upper headband. This upper headband stabilizes the head covering perpendicularly to the wearer's head or provides support against downward forces generated by the weight of the head covering. Therefore, the head suspension is constructed of three different materials with varying hardness and / or elasticity. It is particularly advantageous that the front headband material has a Shore D hardness of less than 80, particularly less than 75, and especially preferably less than 60.

[0012] For example, this advantageous fixation can be achieved by the relative movement of the rotation axis of the corresponding rotary joint, particularly linear relative movement, preferably via sliding in the elongated hole and / or longitudinal groove, which allows the rotary joint to be moved from the adjusting position to the locked position and can be returned. In this relative movement, the rear headband joint component moves relative to the front headband joint component. The rear headband joint component is the portion of the rotary joint at the rear headband, and the front headband joint component is the portion of the rotary joint at the front headband. Preferably, in the relative movement, the position of the rotation axis relative to the front headband does not change, but rather the position of the rotation axis relative to the rear headband moves. Instead of linear relative movement, it can also be a translational movement, which is not linear. Through the described movement of the rotation axis, the majority of the rotary joint can be manufactured as a single piece with the front and rear headbands, thereby eliminating the need for additional components.

[0013] Apart from the two rotating joint components that are made as a single piece with the front or back headband, only one effective connecting element is needed. This effective connecting element extends through the rotating joint and is held at the connecting element by supports on both sides. The effective connecting element preferably consists of two separate components.

[0014] A particularly advantageous aspect is that the relative movement of the corresponding rotating joint at the back of the headband along the wearer's line of sight allows the rotating joint to be moved from the locked position to the adjustable position. If the headband moves back in the opposite direction, the rotating joint is guided back in the locked position, and the angle of the back headband relative to the front headband in the locked position can no longer change. The line of sight can be understood as the direction along which the wearer observes the headgear or head covering during use, depending on the application. Therefore, the line of sight points from the back headband to the front headband and preferably extends approximately parallel to the front headband. Locking the corresponding rotating joint relative to the line of sight ensures that the rotating joint does not automatically move to the adjustable position when the head covering is worn.

[0015] Preferably, the headband has a length adjustment mechanism, by which the length of the headband can be adjusted, thereby adjusting its inner circumference. By shortening the inner circumference, the headband can be secured to the wearer's head, wherein a force is applied from the headband to the wearer's head, causing a force fit between the headband and the head. This length adjustment mechanism also provides the advantage that the inner circumference of the headband can be matched to or set to the circumference of the wearer's head.

[0016] Furthermore, each rotary joint may have a stabilizing mechanism, particularly in the form of a constriction section in a longitudinal slot or elongated hole. This stabilizing mechanism utilizes a stabilizing force to react with the corresponding rotary joint during its transition from the adjustable position to the locked position. This stabilizing force must be applied to overcome the stabilizing mechanism and to move the rotary joint from the locked position to the adjustable position. This stabilizing mechanism ensures that the rotary joint automatically remains in the locked or adjustable position, even without a head suspension.

[0017] A particularly preferred embodiment is the one in which each rotating joint has an angle adjustment device, which fixes multiple angular positions, preferably three or two, of the rear headband relative to the front headband. Preferably, the angle adjustment device operates before the locking mechanism when the rotating joint moves from the adjusting position to the locking position. This design provides a simple mechanism for reproducibly setting the angle between the front and rear headbands. Particularly advantageous is that the angle between the front and rear headbands can be adjusted within a range of 30°, with three angular positions provided.

[0018] The angle adjustment device can be formed by an elongated pin extending from the front and rear headbands. Preferably, the front headband pin is offset relative to the rear headband pin in the adjusted position, and the front and rear headband pins engage with each other in the locked position. The front and rear headband pins can be manufactured as a single piece with the headband, which reduces the number of individual components and simplifies installation.

[0019] A particularly advantageous feature is the inclusion of a locking mechanism formed by teeth, preferably positioned opposite the rotation axis of the rotary joint to the angle adjustment device. The teeth offer the advantage of effectively absorbing rotational forces.

[0020] In a particularly preferred embodiment, the rotating joint is positioned substantially centrally between the upper and lower edges of the headband. This design allows for an optimal fit for different head sizes and shapes.

[0021] Advantageously, each of the rotating joints has a rotating body and two intersecting recesses, the rotating body preferably extending relative to the front headband, and the recesses preferably located at the rear headband. This rotating body or these recesses can be manufactured as a single piece with the front or rear headband, thus requiring fewer individual components.

[0022] In this advantageous embodiment, the substantially cylindrical rotating body is located within a first recess of the intersecting recesses in the locked position and within a second recess of the intersecting recesses in the adjusting position. In the adjusting position, the second recess serves as a rotation guide for the rotating body. In a particularly preferred design, the rotating body has two recesses extending along a curved line in the form of elongated holes, which extends along the outer circumference within the rotating body. The recesses serve to create an elastic region between the recesses and the outer circumference of the rotating body, over which the elastic region yields if the rotating joint shifts from the locked position to the adjusting position when the stabilizing mechanism moves over this region.

[0023] Furthermore, each of the rotating joints may have a rotating body, the rotating body having an external toothed portion on the side opposite to the back headband. Additionally, the recessed portion has an internal toothed portion on the side facing the back headband, the internal toothed portion engaging with the external toothed portion in the locked position and together forming a locking mechanism. The teeth allow for particularly advantageous force transmission between the front and back headbands.

[0024] Each rotating joint may have a rotating body, and the rotating body has a rotating body recess on the side facing the rear headband. The rotating body recess can accommodate a portion of an angle adjustment device that extends from the rear headband joint component and moves into the rotating body recess when the rotating joint moves from the locked position to the adjustable position. Here, when the corresponding rotating joint rotates in the adjustable position, at least one side of the rotating body recess forms an end stop for the rotational movement of the corresponding rotating joint. This rotating body recess provides a particularly simple and space-saving way to limit the angle between the front and rear headbands.

[0025] Particularly preferred is the use of the described head suspension in a respiratory shield. Using the described head suspension in this field provides improved wearing comfort while maximally accommodating different head shapes and sizes.

[0026] Also advantageous is the method for securing the described head covering. Here, the wearer sets the angular position of the rear headband relative to the front headband according to their head shape and / or head size, and the rotary joint then moves from the adjustable position to the locked position via the relative movement of the rotary joint, especially the linear relative movement. In particular, this method is used to secure a respirator. The described method particularly simplifies the adjustable angle between the front and rear headbands.

[0027] A particular advantage of this method is that the wearer reduces the inner circumference by decreasing the length of the headband via the length adjustment mechanism, thereby shifting the rotating joint from the adjusting position to the locked position. Therefore, when the head covering is placed on the wearer's head, the back headband can be set, making it easier for the wearer to find the optimal position. Attached Figure Description

[0028] The present invention will now be described with reference to exemplary embodiments. The accompanying drawings show: Figure 1 A three-dimensional view of the head suspension component is shown. Figure 2 A partial view of the rotary joint in the adjusted position is shown. Figure 3 A partial cross-sectional view of the rotary joint in the adjusted position is shown. Figure 4 A partial view of the rotary joint in the locked position is shown. Figure 5 A partial cross-sectional view of the rotary joint in the locked position is shown. Figure 6 A partial view of the posterior headband joint components is shown. Figure 7 A side view of the head suspension device on the wearer's head is shown. Figure 8 A three-dimensional view of the respirator is shown. Detailed Implementation

[0029] exist Figure 1 and Figure 7 The text is a mix of seemingly unrelated phrases and sentences, making it impossible to translate coherently. It appears to be a collection of fragments from various sources, possibly related to a document or program. Figure 8 The head-mounted device 2 in the head-mounted device 2 has a head-mounted suspension component 1. The head-mounted device 2 is preferably as shown in the image. Figure 8 The respiratory protective shield shown is described. The head suspension 1 includes a headband 3 having a front headband 4 and a rear headband 5. The front headband surrounds the front of the wearer's head, and the rear headband is located at the rear of the wearer's head. The rear headband 5 is connected to the front headband 4 via two rotating joints 6. The rotating joints 6 are located at... Figure 2 and Figure 3 The adjustment position 7 shown can rotate freely at least locally and Figure 4 and Figure 5 It cannot be rotated in the locked position 8 shown.

[0030] The rotating joint 6 of the head suspension 1 is positioned substantially centered between the upper edge 21 and the lower edge 22 of the front headband 4.

[0031] The headband 5 has a length adjustment mechanism 15, through which the length and inner circumference of the headband 3 can be adjusted.

[0032] exist Figure 2 and Figure 3 The image shows adjustment position 7, in which the rotating joint 6 is at least partially free to rotate. Figure 4 and Figure 5 The rotating joint 6 is shown in the locked position 8.

[0033] As from Figures 2 to 5 It can be concluded that by the relative movement 30 of the rotation axis 10 of the rotation joint 6, particularly the linear relative movement 30, preferably via sliding in the elongated hole 9 and / or longitudinal groove, the rotation joint 6 can be moved from the adjusting position 7 to the locking position 8 and can return accordingly. In this relative movement 30, the rear headband joint member 21 moves relative to the front headband joint member 31. Here, it is preferable that the relative movement occurs approximately along a plane perpendicular to the rotation axis 10.

[0034] Therefore, by rotating the corresponding joint 6 at the back headband 5 along the wearer 14 Figure 7 The relative movement 30 in the direction of the line of sight shown can move the rotating joint 6 from the locked position 8 to the adjusted position 7 accordingly.

[0035] If the head covering device 2, in particular the breathing shield 29, and the head suspension 1 are fixed to the head of the wearer 32, this is done accordingly in such a way that the wearer sets the angular position of the rear headband 5 relative to the front headband 4 according to the shape and / or size of his head, and the rotating joint 6 is then moved from the adjusting position 7 to the locking position 8 via the relative movement 30, in particular the linear relative movement 30, of the rotating shaft 10.

[0036] The wearer can manually move the rotating joint 6 from the adjusting position 7 to the locking position 8. However, this can also be done by the wearer reducing the length and inner circumference of the headband 3 via the length adjustment mechanism 15. In this case, the rotating joint 6 is automatically pulled to the locking position 8 by a force generated by shortening the headband 3 using the length adjustment mechanism 15.

[0037] To secure the rotating joint 6, the back strap 5, along with the back strap joint component 12, moves toward the back of the wearer's head. The locking position is... Figure 4 and Figure 5 As shown in the image.

[0038] Figure 3 and Figure 5 A cross-sectional view is shown of the rotating joint 6 along a plane perpendicular to the rotation axis 10 and centrally guided through the rear headband joint component 12. It can be seen that each of the rotating joints 6 has a stabilizing mechanism 16, which is particularly in the form of a constriction in a longitudinal slot or elongated hole. The stabilizing mechanism reacts with a stabilizing force on the transfer of the corresponding rotating joint 6 from the adjusting position 7 to the locked position 8. This stabilizing force must be applied to overcome the stabilizing mechanism 16 and to transfer the rotating joint 6 from the locked position 8 to the adjusting position 7.

[0039] As from Figure 3 and Figure 5It can also be seen that each of the rotating joints 6 in this embodiment has a rotating body 23, which preferably extends relative to the front headband 4. Additionally, two intersecting recesses 24 are provided at the rear headband 5. The intersecting recesses 24 are generally circular in this case, and they intersect such that there is a region between the two circular recesses 24 that is narrower than the diameter of the circular recesses. This region forms the proposed contraction, and the intersection of the circumferences of the circular recesses 24 forms the stabilizing mechanism 16.

[0040] The rotating body 23 has two recesses 31 extending along a line in the form of elongated holes, which extends concentrically within the rotating body 23. The recesses 31 are used to create an elastic region between the outer circumference of the rotating body 23 and the recesses 31, which yields when the stabilizing mechanism 16 moves over this region.

[0041] As also shown, the rotating body 23 has an external toothed portion 25 on the side opposite to the headband 5. In addition, a recessed portion 24 is provided on the side facing the headband 5, which has an internal toothed portion 26. The internal toothed portion engages with the external toothed portion 25 in the locked position 8 and together they form a locking mechanism 18.

[0042] from Figure 3 and Figure 5 It is also found that: the rotating body 23 has a rotating body recess 27 on the side facing the headband 5, the rotating body recess accommodating a part of the angle adjustment device 17 in the adjustment position 7, wherein at least one side of the rotating body recess 27 forms an end stop 28 for the rotational movement of the corresponding rotating joint 6.

[0043] The angle adjustment device 17 fixes the angle setting of the rear headband 5 relative to the front headband 4. In the example shown, the angle is set to three discrete angular positions. Here, the angle adjustment device 17 operates before the locking mechanism 18 when the rotating joint 6 moves from the adjusting position 7 to the locking position 8.

[0044] As shown, the angle adjustment device 17 is formed by an elongated pin that extends from the front headband 4 and the rear headband 5, wherein the front headband pin 19 is offset from the rear headband pin 20 in the adjustment position 7, and wherein the front headband pin 19 and the rear headband pin 20 are engaged with each other in the locking position 8.

[0045] A locking mechanism 18 is also provided, which is formed by teeth, wherein the teeth are opposite to the rotation axis 10 of the rotating joint 6 and the angle adjustment device 17.

[0046] Figure 6 The aforementioned back headband joint component 12 is shown at the end of the back headband (5) starting from one side of the front headband 4.

[0047] Figure 8 A respirator 29 is shown, which is secured to the head of the wearer 32 by a head suspension 1, as described previously. For this purpose, the head suspension 1 is connected to the respirator 29 via a connecting mechanism 33. The connecting mechanism 33 is formed by a groove in the rear head region, in which the connecting mechanism engages with the respirator 29 and is supported in a manner that allows movement in the longitudinal direction. Figure 7 The corresponding connecting mechanism 33 is shown in the figure.

[0048] It is also shown that the corresponding respiratory shield 29 preferably has a face shield 34, wherein the face shield 34 is clear and transparent in the field of vision. The face shield 34 is directly or indirectly connected to the head suspension 1 via two additional swivel joints 37, and can be folded upward via the additional swivel joints 37. Advantageously, the transparent part of the face shield 34 can be easily replaced so that it can be replaced with a new part when it gets dirty. For this purpose, the transparent part is preferably made of clear, transparent plastic.

[0049] Furthermore, the respirator 29 has a cover 35 that isolates the respirator 29 from the environment, at least partially, by creating an overpressure within the cover to prevent particles or contaminants from penetrating into the interior areas of the respirator 29 from the outside. For this purpose, the respirator 29 is supplied with compressed air via a compressed air interface 36.

Claims

1. A head suspension (1) for a head covering device (2), the head suspension comprising a headband (3) having a front headband (4) and a rear headband (5), the front headband encircling a front side of a wearer's head, the rear headband being located at a rear side of the wearer's head, wherein, The back headband (5) is connected to the front headband (4) via two rotating joints (6), characterized in that the rotating joints (6) are at least partially free to rotate in the corresponding adjustment position (7) and cannot rotate in the corresponding locking position (8), and the rotating joints (6) can be moved from the locking position (8) to the adjustment position (7) by the relative movement (30) of the portion of the corresponding rotating joint (6) at the back headband (5) along the line of sight of the wearer (14).

2. Head hanger (1) for a head covering device (2) according to claim 1, characterized in that The head covering device is a respiratory protective mask (29).

3. Head hanger (1) for a head covering device (2) according to claim 1 or 2, characterized in that By means of the relative movement (30) of the rotation axis (10) of the corresponding rotation joint (6), the rotation joint (6) can be moved from the adjustment position (7) to the locking position (8) and can be returned from the locking position to the adjustment position.

4. Head hanger (1) for a head covering device (2) according to claim 3, characterized in that The relative motion (30) of the rotation axis (10) of the rotation joint (6) is a linear relative motion.

5. Head hanger (1) for a head covering device (2) according to claim 3, characterized in that Through the relative movement (30) of the rotation axis (10) of the corresponding rotation joint (6), the rotation joint (6) can be moved from the adjustment position (7) to the locking position (8) via sliding in the elongated hole (9) and / or longitudinal groove, and can be returned from the locking position to the adjustment position.

6. Head hanger (1) for a head covering device (2) according to claim 1 or 2, characterized in that The headband (5) has a length adjustment mechanism (15) by means of which the length and inner circumference of the headband (3) can be adjusted.

7. Head hanger (1) for a head covering device (2) according to claim 1 or 2, characterized in that Each of the rotating joints (6) has a stabilizing mechanism (16) in the form of a constriction in a longitudinal groove or elongated hole. The stabilizing mechanism reacts with a stabilizing force to the corresponding rotating joint (6) from the adjusting position (7) to the locking position (8). The stabilizing force must be applied to overcome the stabilizing mechanism (16) and to move the rotating joint (6) from the locking position (8) to the adjusting position (7).

8. Head hanger (1) for a head covering device (2) according to claim 1 or 2, characterized in that Each of the rotating joints (6) has an angle adjustment device (17) which fixes multiple angular positions of the rear headband (5) relative to the front headband (4).

9. Head hanger (1) for a hood device (2) according to claim 8, characterized in that Each of the rotating joints (6) has an angle adjustment device (17) which fixes three or two angular positions of the rear headband (5) relative to the front headband (4), wherein the angle adjustment device (17) acts before the locking mechanism (18) when the rotating joint (6) moves from the adjustment position (7) to the locking position (8).

10. Head hanger (1) for a hood device (2) according to claim 8, characterized in that The angle adjustment device (17) is formed by an elongated pin extending from the front headband (4) and the rear headband (5), wherein the front headband pin (19) is offset relative to the rear headband pin (20) in the adjustment position (7), and wherein the front headband pin (19) and the rear headband pin (20) are engaged with each other in the locking position (8).

11. The head suspension member (1) for the head covering device (2) according to claim 8, characterized in that, A locking mechanism (18) is provided, which is formed by teeth, wherein the teeth are opposite to the angle adjustment device (17) relative to the rotation axis (10) of the rotating joint (6).

12. The head suspension member (1) for the head covering device (2) according to claim 1 or 2, characterized in that, The rotating joint (6) is centrally located between the upper edge (21) and the lower edge (22) of the headband (4).

13. The head suspension member (1) for the head covering device (2) according to claim 1 or 2, characterized in that, Each of the rotating joints (6) has a rotating body (23) and two intersecting recesses (24), the rotating body extending relative to the front headband (4) and the recesses located at the rear headband (5).

14. The head suspension member (1) for the head covering device (2) according to claim 13, characterized in that, Each of the rotating joints (6) has a rotating body (23), which has an external tooth (25) on the side opposite to the back headband (5), and the recess (24) has an internal tooth (26) on the side facing the back headband (5). The internal tooth engages with the external tooth (25) in the locked position (8) and together form a locking mechanism (18).

15. The head suspension member (1) for the head covering device (2) according to claim 8, characterized in that, Each of the rotating joints (6) has a rotating body (23) with a rotating body recess (27) on the side facing the headband (5). The rotating body recess accommodates a portion of the angle adjustment device (17) in the adjustment position (7). At least one side of the rotating body recess (27) forms an end stop (28) for the rotational movement of the corresponding rotating joint (6).

16. A respiratory protective shield (29) having a head suspension (1) according to any one of claims 1 to 15.

17. A method for securing a head-covering device (2) using a head suspension member (1) according to any one of claims 1 to 15, wherein, The wearer sets the angular position of the back headband (5) relative to the front headband (4) according to the wearer's head shape and / or head size, and the rotation joint (6) is then moved from the adjusted position (7) to the locked position (8) via the relative movement (30) of the rotation joint (6).

18. The method according to claim 17, characterized in that, The relative motion (30) of the rotating joint (6) is a linear relative motion.

19. The method according to claim 17, characterized in that, By reducing the length and inner circumference of the headband (3) via the length adjustment mechanism (15), the wearer moves the rotating joint (6) from the adjustment position (7) to the locking position (8).

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