• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    Abstract 5 Shown and described is a protective helmet comprising a helmet body, a respirator mask and a first and a second mask retaining device that are attached on opposite sides of the helmet body and are provided to connect with the first and second mask support arm of the respirator mask, 10 in which at least one mask retaining device is provided with a retaining device engagement section (1, 1') and where at least one mask support arm is provided with a support arm engagement section (21, 25), in which the retaining device engagement section (1, l') and the 15 support arm engagement section (21, 25) are able to engage along an engagement direction (31), in which the retaining device engagement section (1, 1') comprises a base plate (3), a U-shaped abutment wall (7) with a bottom section (11), where said U-shaped abutment wall 20 (7) extends perpendicular to base plate (3), two each other opposing side sections (9a, 9b) and a cover plate (5). The object to provide a protective helmet with a retaining device engagement section that can be connected not only with a rounded but also with a square-shaped 25 support arm engagement section of the support arm of a respirator mask in a secure and simple manner is achieved in that the each other facing inner surfaces (13a, 13b) of side sections (9a, 9b) initially extend in a curved path, where the distance between the each other facing 30 inner surfaces (13a, 13b) of side sections (9a, 9b) reduces in the direction towards the bottom section (11), and then assumes a straight path parallel to engagement direction (31), and that the inner surface (15) of bottom section (11) that faces opening (33) extends straight, perpendicular to engagement direction (31). [Fig. 4] o ) co C(2 %) j Co oco Co m) a) CO
    公开号:AU2013200267A1
    申请号:U2013200267
    申请日:2013-01-18
    公开日:2013-08-01
    发明作者:Stefan Effmann；Olga Gottfried；Jan Musow
    申请人:Draeger Safety AG and Co KGaA；
    IPC主号:A62B18-08
    专利说明:
    Protective helmet 5 The present invention concerns a protective helmet comprising a helmet body, which is designed to be worn on a human head and to protect said head, a respirator mask 10 comprising a mask body as well as a first and second mask support arm attached to opposite sides of the mask body, and a first and second mask retaining device, which are attached to opposite sides of the helmet body. The fist mask retaining device is designed to be connected to the 15 first mask support arm, and the second mask retaining device is designed to be connected to the second mask support arm. At least one of the first and second mask retaining devices is provided with a retaining device engagement section, and at least one of the first and 20 second mask support arms is provided with a support arm engagement section. The retaining device engagement section and the support arm engagement section are designed such that they engage when the support arm engagement section is moved in an engagement direction 25 with respect to the retaining device engagement section. The retaining device engagement section comprises a base plate, a U-shaped abutment wall with a bottom section, where said U-shaped abutment wall extends perpendicular to base plate, two opposing side sections, an opening 30 pointing into the engagement direction, and a cover plate that extends parallel to but offset from the base plate at least partially between the side sections and the U shaped abutment wall.
    2 Protective helmets in the sense of the present invention comprising a helmet body and a respirator mask are used, for example, by fire fighters as part of their protective 5 equipment, protecting against burns, smoke inhalation and falling debris in fire-fighting operations. Nevertheless, non-fire fighting applications may also be feasible, for example for ambulance services or technical support services. 10 For all applications mentioned it is desirable that the respirator mask can be easily and quickly attached to or removed from the helmet body. At the same time the respirator mask must sit tightly and securely against 15 varying face forms of users and be suitably retained by the helmet. To achieve this the respirator mask is provided with mask support arms that are attached flexibly on opposite sides of the mask body; said mask support arms are detachably connected to mask retaining 20 devices located on opposite sides of the helmet body. To ensure that the respirator mask sits tightly and securely against varying face forms of different users, the mask support arms are provided with an elastic 25 element with initial tension to connect the mask support arms to the mask retaining devices on the helmet body. Thus the initial tension of the elastic elements of the first and second mask support arm presses the mask body against the face of the user and thereby ensures that the 30 mask sits tightly. Nevertheless, it is also feasible that the respirator mask is permanently attached with one mask support arm to 3 one of the mask retaining devices of the protective helmet, and the other mask support arm is detachably connected to the other mask retaining device of the protective helmet. This way the mask would be permanently 5 attached to the protective helmet, and through one-sided attachment of the mask support arm to the mask retaining device of the protective helmet the mask could be placed against the user's face and retained in that position. 10 Each mask support arm, which can be detachably connected to a mask retaining device of the protective helmet, is provided with a support arm engagement section, and each mask retaining device, to which a mask support arm can be detachably connected, is provided with a retaining device 15 engagement section. The support arm engagement section and the retaining device engagement section are designed such that they can engage with each other and thus can form a detachable connection between mask support arm and mask retaining device. To achieve this the support arm 20 engagement section and the retaining device engagement section can be designed in different ways. From prior art, such as for example DE 10 2005 024 508 B3, a combination of support arm engagement section and 25 retaining device engagement section is known where the retaining device engagement section comprises a base plate, a cover plate extending parallel to the base plate, and a U-shaped abutment wall with a bottom section and two opposing side sections, in which said abutment 30 wall extends parallel to the base plate in one plane and is evenly curved so that there is a steady changeover between the side sections and the bottom section. The support arm engagement section is provided with a 4 protrusion with a rounded contour that is designed such that it can be inserted between base plate and cover plate and between the side sections and the U-shaped abutment wall, and rests against the curved abutment wall 5 with the entire rounded contour. Nevertheless, alternative combinations between retaining device engagement section and support arm engagement section are also known from the prior art, such as for 10 example from US 4.734.940, where the U-shaped abutment wall of the retaining device engagement section is formed by two essentially parallel side sections and a bottom section that extends at right angles to the side sections and connects the same. In this instance the protrusion of 15 the support arm engagement section has an essentially rectangular contour so that it can be inserted between the parallel side sections of the U-shaped abutment wall of the retaining device engagement section up to the bottom section, so that the rectangular protrusion 20 presses against the entire inside of the bottom section. Moreover, the prior art includes a number of protective helmets that provide a retaining device engagement section with a curved, U-shaped abutment wall or a number 25 of respirator masks that provide a mask support arm with a support arm engagement section with a rounded protrusion. The prior art also includes protective helmets with a retaining device engagement section whose U-shaped abutment wall has a rectangular shape, that is, 30 two essentially parallel side sections and a bottom section that extends at right angles to the side sections. There are also respirator masks that are provided with a mask support arm with a support arm 5 engagement section that has an essentially rectangular shaped protrusion. The combination of a respiratory mask with support arm 5 engagement section with rounded protrusion and a helmet body with retaining device engagement section with a rectangular abutment wall, as well as a combination of a respiratory mask with support arm engagement section with a curved abutment wall is not possible or rather not 10 expedient since there is no full engagement between support arm engagement section and retaining device engagement section. In other words, due to the different shape the protrusion is not in full and close contact with the abutment wall. The support arm engagement 15 section and the retaining device engagement section can easily disengage, which can cause the respirator mask to detach from the protective helmet and from the user's face. 20 Nevertheless, for economic reasons, amongst others, it is still desirable that respiratory masks with different support arm engagement sections can alternatively be attached to the retaining device engagement sections of a protective helmet. This is the case, for example, where a 25 protective helmet must be exchanged. In this instance it would be sensible if the respective respiratory mask can also be attached to a different helmet. Based upon the prior art it is thus the object of the 30 present invention to provide a protective helmet with a retaining device engagement section that can be connected not only with a rounded but also with a rectangular 6 support arm engagement section of the support arm of a respiratory mask in a secure and simple manner. Said object is achieved in that the inner each other 5 facing surfaces of the side sections extend initially curved, where the distance between the inner, each other facing surfaces of the side sections reduces towards the bottom section, and where after the curved part follows a straight extension towards the bottom section parallel to 10 the engagement direction, and that the inner surface of the bottom section, which faces the opening, extends straight, perpendicular to the engagement direction, from the first side section to the second side section. 15 This achieves to combine the shapes of a retaining device engagement section with a curved U-shaped abutment wall on the one hand, and a retaining device engagement section with a rectangular U-shaped abutment wall on the other hand, which features two essentially parallel side 20 sections and a bottom section that extends perpendicular to the side sections, together into a single retaining device engagement section. A rounded protrusion of a support arm engagement section 25 can in this instance rest against the curved section of the inner surfaces of the side sections and also, in a preferable manner, simultaneously against one point of the straight inner surface of the bottom section, which results in a safe and secure seat of the support arm 30 engagement section in the retaining device engagement section according to the invention. On the other hand, a rectangular protrusion of a support arm engagement section can rest, via the entire inner surface of the 7 bottom section and via the straight parts of the side sections that extend in engagement direction, against the abutment wall, which results in a safe and secure seat of the support arm engagement section with rectangular 5 protrusion in the retaining device engagement section according to the invention. To avoid friction and to promote a smooth engagement and disengagement, the transitional section between the part 10 of the inner surfaces of the side sections that are curved and that part of the inner surfaces of the side sections that extends straight can be rounded off. Moreover, the distance between the inner surfaces of the side sections that extend straight can reduce slightly in 15 engagement direction, that is, towards the bottom section, which also makes the engaging and disengaging of the support arm engagement section with the retaining device engagement section easier. Said reduction in distance between the inner surfaces of the side sections, 20 which extend straight towards the bottom section, is so small that it does not contradict the essentially parallel extension of the straight inner surfaces of the side sections in engagement direction. 25 Thus both forms of the support arm engagement sections are retained by the abutment wall in the plane that extends parallel to the base plate in engagement direction as well as perpendicular to the engagement direction, so that a movement is only possible opposite 30 to the engagement direction. In a preferred embodiment the curved inner surfaces of the side sections that are facing each other are curved 8 in such a way that they follow - to a large extent - a circular path, which makes contact with the inner surface of the bottom section at one point. This way, a support arm engagement section, whose protrusion follows the 5 contour of a circular path, makes contact not only with the curved parts of the side sections but also at one point on the inner surface of the bottom section. This provides an even more secure and firmer seat of the protrusion of the support arm engagement section in the 10 retaining device engagement section. In a further preferred embodiment the retaining device engagement section is provided with a latching projection, which is formed on the base plate, points in 15 engagement direction and is elastically deformable perpendicular to the base plate. A latching projection of this kind has the purpose of preventing the support arm engagement section from slipping out of the retaining device engagement section. 20 The projection of the support arm engagement section can be provided with a lip that extends perpendicular to the base plate and is arranged between abutment wall and latching projection when the support arm engagement 25 section and the retaining device engagement section are engaged. Here the latching projection retains the projection of the support arm engagement section in its resting position against the abutment wall. To disengage the support arm engagement section from the retaining 3.0 device engagement section, the lip of the projection can only be moved against the engagement direction past the latching projection, if the latching projection is deformed in the direction perpendicular to the base plate 9 and away from the protrusion so that the lip no longer catches on the latching projection if the projection is moved against the engagement direction. 5 The latching projection is attached to the base plate by a reduced neck-like section and extends from there in engagement direction, that is, in the direction towards the bottom section. Moreover, the neck-like section may be provided with a perforation. This design ensures that 10 the latching projection is easily deformable in the direction perpendicular to the base plate. The deformation of the latching projection for releasing the lip of the projection of the support arm engagement 15 section can be achieved by a pressure pin, which is attached to the support arm engagement section, is located above the latching projection when the support arm engagement section and the retaining device engagement section are engaged. Moreover, said pressure 20 pin can be moved perpendicular to the base plate up to the surface of the latching projection, for example by the user pressing on it with the thumb, which deforms the latching projection, moving it perpendicular to the base plate and away from the support arm engagement section. 25 In this instance it is particularly preferred if the latching projection extends flat in the plane of the base plate or parallel to it, and features a part-circular contour that extends at an even distance to the circular 30 path, on which the curved, each other facing inner surfaces of the side sections extend. This ensures that the contour of the latching projection follows the shape of the curved inner surfaces of the side sections, in 10 which an even gap is created between the inner surfaces of the side sections and the edge of the latching projection. The lip of the projection of the support arm engagement section locks positively into said gap so that 5 there is no play of the lip permitted between the latching projection and the insides of the side sections. In a preferred embodiment the cover plate features a rectangular cut-out in the direction towards the opening 10 of the abutment wall, that is, opposite to the engagement direction, in the plane of the cover plate. The dimensions of said cut-out in this plane in the direction perpendicular to the engagement direction are equivalent to the dimensions of the bottom section in this 15 direction. Minor deviations from the rectangular shape to a trapezoidal shape are also possible according to the invention. The cut-out has the purpose to make the engagement or disengagement of the support arm engagement section with the retaining device engagement section 20 easier. This prevents to a large extent that the protrusion of the support arm engagement section does not catch on the cover plate. The cover plate that surrounds the cut-out is sufficient so that the protrusion of the support arm engagement section cannot be removed in the 25 direction perpendicular to the base plate. A rectangular cut-out is in this instance particularly preferable since the engagement of rectangular as well as rounded protrusions of support arm engagement sections with the retaining device engagement section is made easier. 30 In a further preferred embodiment at least one mask retaining device is provided with an attachment plate, which is fastened to the helmet body, in which the 11 attachment plate is fitted with a guide rail with which the retaining device engagement section engages in such a way that the retaining device engagement section is fastened to the attachment plate in a manner so that it 5 is moveable and guided parallel to the engagement direction. The retaining device engagement section can be moved linearly in form of a slide on the guide rail that 10 extends out from the attachment plate. Moreover, said guide rail can be provided with two opposing protrusions that point away from each other, and the retaining device engagement section can be provided with two cut-outs that face each other, in which the cut-outs of the retaining 15 device engagement section engage with the protrusions of the guide rail, which makes a guided sliding movement along the guide rail possible. Furthermore, the retaining device engagement section can be moved, incrementally or infinitely variable, along the attachment plate, and thus 20 can be adjusted along a fixed path on the helmet. This method allows the adjustment of the position of the respirator mask with respect to the helmet and thus also with respect to the face of a user, and respectively also the adjustment of the contact pressure of the mask on the 25 face. Here it is particularly preferred if a threaded spindle is provided, which is fastened to the attachment plate so that it can rotate around its longitudinal axis parallel 30 to the engagement direction and fixed in the direction of the longitudinal axis. The thread of the threaded spindle then engages with the mating thread of a mating thread element of the retaining device engagement section in 12 such a manner that a rotation of the threaded spindle causes a linear movement of the retaining device engagement section along the guide rail. This method allows for an infinite adjustment of the retaining device 5 engagement section in linear direction along the guide rail by a rotational movement of the threaded spindle. It is furthermore particularly preferred if the threaded spindle has on one side, in the direction of the 10 longitudinal axis, an adjustment end with a simple slot, a cross recess or a bolt head, which is designed to engage with a spanner or screwdriver. The threaded spindle can take the form of a grub screw, which can be turned at the adjustment end by means of a flat blade 15 screwdriver or a Phillips screwdriver, and so adjust the retaining device engagement section with respect to the guide rail, which alters the contact pressure of the mask on the face of the user. However, the threaded spindle can also take the form of a screw with a screw head, 20 which also has one or more slots, a circumference shaped with flat sides, a socket recess or other means for engagement with a spanner or a screwdriver, so as to turn the threaded spindle and so adjust the retaining device engagement section with respect to the guide rail. 25 In a further also particularly preferred embodiment the threaded spindle is provided on one side in longitudinal direction with a wingnut-shaped head. This type of head allows the threaded spindle to be turned by hand without 30 the necessity for tools, and thus the retaining device engagement section, or the position of the respiratory mask respectively, can be adjusted. It is furthermore particularly preferred if the wingnut-shaped head is 13 retained on the threaded spindle elastically moveable in the direction of the longitudinal axis, and where the wingnut-shaped head is provided with a latching protrusion extending parallel to the longitudinal axis of 5 the threaded spindle, and where the attachment plate or the guide rail respectively is provided with a latching perforation, which is designed to engage with the latching protrusion. 10 A spring element, for example a helical spring, may be provided between the wingnut-shaped head and the threaded spindle, so that the wingnut-shaped head must first be pulled away from the threaded spindle in the direction of the spindle's longitudinal axis to be able to disengage 15 the latching protrusion from the latching perforation and to be able to turn the wingnut-shaped head, which is non rotatably attached to the threaded spindle. If the latching protrusion is now turned together with the latching perforation, the force of the spring pushes the 20 latching protrusion back into the latching perforation and thus prevents an unintended turning of the wingnut shaped head or the attached threaded spindle respectively. Moreover, this allows the wingnut-shaped head to be turned only by a pre-set angle, and the 25 retaining device engagement section can thus be adjusted with respect to the guide rail by an accurately predetermined adjustment step. The more latching perforations are provided the smaller are the adjustment steps that can be set. 30 In a preferred embodiment the guide rail is provided with a scale, and the retaining device engagement section is provided with a pointer means, which is designed so as to 14 indicate on the scale an adjustment position of the retaining device engagement section with respect to the attachment plate. The increments on such a scale are preferably adapted to the adjustment steps of the 5 retaining device engagement section with respect to the guide rail, which are determined by the distances between the perforations. For example, the linear displacement of the retaining device engagement section compared to the guide rail, which - in the instance of a single 10 perforation - is the equivalent of one turn of the wingnut-shaped head or the threaded spindle respectively, is also the exact equivalent of one adjustment step on the scale. 15 In this instance it is particularly preferred if the pointer means is provided in form of a perforation in the retaining device engagement section, through which a section of the scale of the guide rail below is visible that indicates the current displacement position. 20 Nevertheless, it is also feasible to provide, for example, an arrow, a line or a point on the retaining device engagement section, which can be aligned with an exact position on the scale. 25 The present invention is now described by way of a drawing depicting an exemplary embodiment. Shown are in: Fig. 1 a perspective representation of a retaining device engagement section according to the 30 prior art with a curved inner surface of the abutment wall, 15 Fig. 2 a perspective representation of a retaining device engagement section according to the prior art with a square abutment wall, in which the inner surfaces of the side sections extend 5 parallel to each other, and where the inner surface of the bottom section extends perpendicular to the inner surfaces of the side sections, 10 Fig. 3 an exemplary embodiment of a retaining device engagement section of the mask retaining device of a protective helmet according to the invention, 15 Fig. 4 a cross-section parallel to the base plate through the retaining device engagement section of Fig. 3, Fig. 5 a cross-section perpendicular to the base plate 20- and parallel to the engagement direction through the retaining device engagement section of Fig. 3 during engagement with a support arm engagement section with rounded protrusion and a lip that engages with the latching 25 projection, Fig. 6 a cross-section perpendicular to the base plate and parallel to the engagement direction through the retaining device engagement section 30 of Fig. 3 during engagement with a support arm engagement section with rectangular protrusion, 16 Fig. 7 a plan view of the mask retaining device of a further exemplary embodiment of a protective helmet according to the invention, with an attachment plate with a guide rail and a 5 retaining device engagement section, Fig. 8 a section along the longitudinal axis of the threaded spindle and perpendicular to the base plate through the mask retaining device of the 10 exemplary embodiment of Fig. 7, and Fig. 9 a rear view of the mask retaining device of the exemplary embodiment of Fig. 7 towards the wingnut-shaped head of the threaded spindle. 15 Fig. 1 depicts a retaining device engagement section 1'' of a protective helmet known from prior art. The retaining device engagement section 1'' comprises a base plate 3, a cover plate 5 extending parallel to base plate 20 3 located at a distance from it, and a U-shaped abutment wall 7 that is attached to said base plate 3 and extends perpendicular to it, and where said abutment wall 7 features two opposing side sections 9a, 9b and a bottom section 11, which connects the two side sections 9a, 9b. 25 The inner surfaces of the side sections 9a, 9b and the inner surface of the bottom section 11 merge into each other in a bend with a continuous curvature. That means that the entire inner surface of the U-shaped abutment wall is curved. Moreover, base plate 3 is provided with a 30 latching projection 17 that points towards the bottom section 11 of abutment wall 7.
    17 Fig. 2 depicts a further retaining device engagement section 1''' of a protective helmet according to prior art, which is also provided, like the retaining device engagement section 1'' of Fig. 1, with an offset, 5 parallel cover plate 5 and a U-shaped abutment wall 7 extending perpendicular to base plate 3. Nevertheless, in deviation from retaining device engagement section 1'' of Fig. 1, the U-shaped abutment wall 7 of the retaining device engagement section 1''' of Fig. 2 is provided with 10 two opposing side sections 9a, 9b whose inner surfaces extend essentially parallel to each other, and a bottom section 11 whose inner surface extends essentially perpendicular to the inner surfaces of the side sections 9a, 9b. Since the retaining device engagement sections 15 1'', l''' according to Fig. 1 and 2 have a similar design, similar characteristics are designated with the same reference numbers. Thus the retaining device engagement section 1'' of Fig. 20 1 is designed such that it engages with a support arm engagement section 21 (shown in Fig. 5), which has a rounded protrusion 23 (Fig. 5) provided to make contact with abutment wall 7. In contrast, the retaining device engagement section 1' of Fig. 2 is designed so as to 25 engage with a support arm engagement section 25 (shown in Fig. 6), which has a square protrusion 27 (Fig. 6) to make contact with the abutment wall 7. To ensure that not only a support arm engagement section 21 with round protrusion 23, but also a support arm engagement section 30 25 with square protrusion 27 can engage and also provide a secure and solid connection, a protective helmet with a retaining device engagement section 1, 1' according to the invention is provided, which is shown in Fig. 3 to 9.
    18 Again, similar characteristics are designated with the same reference numbers. Fig. 3 depicts a retaining device engagement section 1 of 5 an exemplary embodiment of a protective helmet according to the invention. Protective helmets of this kind comprise a helmet body, which is designed to be worn on a human head and to protect said head, a respirator mask comprising a mask body as well as a first and second mask 10 support arm attached to opposite sides of the mask body, and a first and second mask retaining device, which are each attached to opposite sides of the helmet body and are provided for connection to the first and second mask support arm. To achieve this, at least one mask support 15 arm 29 (shown in Fig. 5 and 6) is provided with a support arm engagement section 21 or 25 respectively, and at least one mask retaining device is provided with a retaining device engagement section 1. Support arm engagement section 21 or 25 respectively and retaining 20 device engagement section 1 are designed such that they engage with each other through a relative movement to each other or through a movement of the support arm engagement section 21 or 25 respectively in an engagement direction 31 with respect to the retaining device 25 engagement section 1, and thus form a detachable connection between the mask retaining device and the mask support arm 29. The retaining device engagement section 1, as shown in 30 Fig. 1, includes a base plate 3, a U-shaped abutment wall 7 with bottom section 11, where said U-shaped abutment wall extends perpendicular to base plate 3 and is connected with said base plate, two opposing side 19 sections 9a, 9b and an opening 33 that is located opposite to bottom section 11 and points opposite to the engagement direction 31. The base plate extends parallel, and the bottom section 11 extends perpendicular to the 5 engagement direction 31. Moreover, the retaining device engagement section 1 is provided, parallel to base plate 3, with a cover plate 5, which extends offset from base plate 3 between the side sections 9a, 9b and the bottom section 11. This forms a hollow section between base 10 plate 3, the cover plate 5 and the U-shaped abutment wall 7, which comprises both side sections 9a, 9b and the bottom section 11, into which the protrusion 23 or 27 respectively of a support arm engagement section 25 or 29 respectively engages with the retaining device engagement 15 section 1. As is apparent from Fig. 4, the each other facing inner surfaces 13a, 13b of side sections 9a, 9b, viewed in engagement direction 31, extend initially in a curved 20 path where the distance between the each other facing inner surfaces 13a, 13b of side sections 9a, 9b in engagement direction 31, that is, towards the bottom section 11, decreases. The amount by which the distance decreases becomes larger in engagement direction 31. 25 Following the curved path, the inner surfaces 13a, 13b of side sections 9a, 9b in engagement direction 31 up to the bottom section 11 provide a straight path, where the distance between the inner surfaces 13a, 13b of side sections 9a, 9b remains constant in this section and the 30 inner surfaces 13a, 13b extend parallel to engagement direction 31. Parallel to bottom plate 3, the inner surface 15 of bottom section 11 extends straight, perpendicular to engagement direction 31. The curved 20 sections of the each other facing inner surfaces 13a, 13b of side sections 9a, 9b are preferably curved in such a way that they extend over a significant length along a common circular path, which makes contact at one point 5 with the inner surface 15 of bottom section 11. As shown in Fig. 4, to achieve a smooth engagement of the support arm engagement section 21 or 25 respectively with the retaining device engagement section 1, the transition 10 between the curved path and the straight path of the inner surfaces 13a, 13b of side sections 9a, 9b is rounded off on the one hand, but also a small reduction of the distance between the inner surfaces 13a, 13b of side sections 9a, 9b from each other in the straight path 15 towards bottom section 11 is provided. A very small reduction of the distance between the inner surfaces 13a, 13b of side sections 9a, 9b to each other, viewed in engagement direction 31, is therefore expressly permitted according to the invention and is not in contradiction to 20 the essentially parallel to the engagement direction 31 extending part of the inner surfaces 13a, 13b of side sections 9a, 9b. Furthermore, the retaining device engagement section 1 is 25 provided with a latching projection 17, which points in engagement direction 31 at the plane of base plate 3 and beginning at base plate 3. At the location where the latching projection 17 is attached to base plate 3, the latching projection 17 is provided with a reduced neck 30 section 35 and a perforation 37, which makes the deformation or bending of the latching projection 17 with respect to base plate 3 easier. The latching projection 17 is, furthermore, provided in the plane of base plate 3 21 with a rounded, preferably circular contour 39, which is located opposite the curved sections of the inner surfaces 13a, 13b of side sections 9a, 9b at an even distance. 5 As is apparent from Fig. 3, the cover plate 5 is provided with a cut-out 41 opposite to the engagement direction 31, that is, in the direction of opening 33 of the abutment wall 7, which has a rectangular or trapezoidal 10 shape in the plane of cover plate 5. In other words, cover plate 5 extends U-shaped in a plane parallel to the base plate 3, where the opening of the U-shape points against the engagement direction. 15 Fig. 5 and 6 depict a support arm engagement section 21 with a rounded protrusion 23 (Fig. 5) as well as a support arm engagement section 25 with a square protrusion 27 (Fig. 6). 20 The present exemplary embodiment of the protective helmet according to the invention can be used as follows. In order to attach the respirator mask to the helmet body and press it against the face of a user, the support arm engagement section 21 or 25 respectively of a mask 25 support arm 29 of the respirator mask is engaged with retaining device engagement section 1 of the mask retaining device that is attached to the body of the helmet. Depending on the shape of protrusion 23 or 27 respectively of the support arm engagement section 21 or 30 25 respectively, either a round protrusion 23 (see Fig. 5) or a square, preferably rectangular, protrusion 27 (see Fig. 6) is inserted into the hollow section between base plate 3, cover plate 5 and U-shaped abutment wall 7.
    22 In the instance of a rounded protrusion 23 (Fig. 5), the protrusion 23 is not only in contact with the curved sections of the inner surfaces 13a, 13b of side sections 5 9a, 9b but, furthermore, preferably also with a point at the inner surface 15 of bottom section 11. The protrusion 23 can in this instance also be provided with a lip 43, which extends perpendicular to the plane in which protrusion 23 extends. In the engagement position of 10 support arm engagement section 21 and retaining device engagement section 1 the lip 43 is arranged between latching projection 17 and abutment wall 7, so that the latching projection 17 prevents a movement of protrusion 23 against the engagement direction 31. To be able to 15 disengage support arm engagement section 21 from the retaining device engagement section 1, the latching projection 17 must be elastically deformed, i.e., bent, perpendicular to base plate 3 and away from protrusion 23. This can be achieved through a pressure pin arranged 20 on mask support arm 29, which, for example, a user presses with a finger, and where said pressure pin presses against the surface of the latching projection 17 and deforms the same perpendicular to base plate 3. 25 In the instance of a square-shaped protrusion 27 (Fig. 6), the protrusion 27 is in contact preferably over the entire length of inner surface 15 of bottom section 11, and also at least partially with the sections of the inner surfaces 13a, 13b of side sections 9a, 9b that 30 extend straight. In both instances, where the support arm engagement section 21 has a round protrusion 23 as well as where the 23 support arm engagement section 25 has a rectangular protrusion 27, a secure and solid connection between the mask support arm 29 and the mask retaining device of the retaining device engagement section 1 according to the 5 invention, and thus a secure and solid attachment of the respirator mask on the body of the helmet and on the face of a user, is achieved. Fig. 7 to 9 depict the mask retaining device 45 of a 10 further exemplary embodiment of a protective helmet according to the invention, comprising a helmet body, a respirator mask and a mask retaining device 45. Similar characteristics are also in this exemplary embodiment designated with the same reference numbers. 15 As shown in Fig. 7, the mask retaining device 45 comprises an attachment plate 47 with a guide rail 49 and a retaining device engagement section 1'. Said attachment plate 47 can be mounted on the helmet body of a 20 protective helmet. The guide rail 49 is designed to protrude from the attachment plate 47 and is provided on two parallel edges with protrusions 51a, 51b that point away from each other. The retaining device engagement section 1' is provided on its side that faces away from 25 cover plate 5 with two parallel, each other facing recesses 53a, 53b that are shaped such that they engage with the protrusions 51a, 51b of guide rail 49. This way the retaining device engagement section 1' is slidably attached along guide rail 49 parallel to protrusions 51a, 30 51b of guide rail 49 to attachment plate 47. In the present exemplary embodiment the retaining device engagement section 1' is adjustable in engagement direction 31 along guide rail 49. Nevertheless, it is 24 also feasible that the parallel cut-outs 53a, 53b of the retaining device engagement section 1' are provided in a location that is rotated by a certain angle with respect to the engagement direction. 5 The side of the retaining device engagement section 1' that faces away from guide rail 49 is provided, similar to the description of the first exemplary embodiment, with a base plate 3 with a latching projection 17, a 10 cover plate 5, offset and parallel to base plate 3, with a cut-out 41, and a U-shaped abutment wall 7 with two each other facing side sections 9a, 9b and a bottom section 11. The inner surfaces 13a, 13b of the abutment wall 9a, 9b are, as described in connection with the 15 first exemplary embodiment, at first curved in engagement direction 31 and then straight, essentially parallel to engagement direction 31. Moreover, the mask retaining device 45 is provided with a 20 threaded spindle 55, which is able to rotate around its longitudinal axis 57 and is retained parallel to protrusions 51a, 51b of guide rail 49 while at the same time it is unmovably fixed in the direction of protrusions 51a, 51b of guide rail 49 and connected to 25 attachment plate 47. Here the thread 59 of threaded spindle 55 engages with the mating thread 61 of a mating thread element 63, which is provided on the retaining device engagement section 1'. A rotational movement of threaded spindle 55 causes a linear movement of the 30 retaining device engagement section 1' along the guide rail 49. Through a rotation of the threaded spindle 55 it is therefore possible to adjust the linear position of 25 the retaining device engagement section 1' with respect to the guide rail 49. The turning of the threaded spindle 55 for the linear 5 adjustment of the retaining device engagement section 1' is achieved in this instance with a wingnut-shaped head 65, which is non-rotatably attached to threaded spindle 55 but elastically moveable in the direction of the longitudinal axis 57 of threaded spindle 55, and can thus 10 be operated by hand by the user or a helper. Nevertheless, it is also conceivable that the threaded spindle 55 features on one end in the direction of the longitudinal axis 57 an adjustment end with a slot, a cross recess or a bolt head, which is designed to engage 15 with a spanner or a screwdriver, and which also provides for a turning of threaded spindle 55 and consequently a linear adjustment of the retaining device engagement section l'. 20 The wingnut-shaped head 65 in the current exemplary embodiment is provided with a latching protrusion 67 that extends and protrudes parallel to the longitudinal axis 57 of threaded spindle 55, and the attachment plate 47, in particular guide rail 49, is provided with a latching 25 perforation 69, where latching protrusion 67 and latching perforation 69 are designed such that they engage with each other. The wingnut-shaped head 65 is elastically attached by way of a helical spring 71 in the direction of threaded spindle 55, so that the initial tension of 30 helical spring 71 presses the latching protrusion 67 of the wingnut-shaped head 65 into the latching perforation 69. To be able to turn the threaded spindle 55 via wingnut-shaped head 65, said wingnut-shaped head 65 must 26 first be pulled away against the initial tension of the helical spring 71 in the direction of the threaded spindle 55 to disengage the latching protrusion 67 from the latching perforation 69. 5 Moreover, a scale 73 is provided on guide rail 49 in adjustment direction of the retaining device engagement section 1', and a pointer means is provided on retaining device engagement section 1' so that the adjustment 10 position of retaining device engagement section 1' with respect to guide rail 49 is recognisable. A perforation 75 is provided as pointer means on the retaining device engagement section, through which a section of scale 73 on guide rail 49 becomes visible. 15 The second exemplary embodiment of a protective helmet according to the invention can be used as follows. As described in connection with the first exemplary embodiment, first the support arm engagement section 21 20 or 25 respectively of a mask support arm 29 of the respirator mask is engaged with the retaining device engagement section 1' of the mask retaining device 45 that is attached to the helmet body. 25 The seat of the respirator mask on the face of a user can then be adjusted by turning the threaded spindle 55, which adjusts the position of the retaining device engagement section 1' with respect to guide rail 49 through the engagement of thread 59 with the mating 30 thread 61 of mating thread element 63. In order to turn the threaded spindle 55, the wingnut-shaped head 65 is first pulled parallel to longitudinal axis 57 of threaded spindle 55 away from threaded spindle 55 against the 27 initial tension of helical spring 71, which causes the latching protrusion 67 to disengage from latching perforation 69. Said wingnut-shaped head 65, and consequently the threaded spindle 55 to which the 5 wingnut-shaped head 65 is non-rotatably attached, can now be turned by hand, which causes the retaining device engagement section 1' to be moved along the scale 73 on guide rail 49. The currently selected adjustment position on scale 73 can be read through a perforation 75 in 10 retaining device engagement section 1'. One turn of the wingnut-shaped head 65 corresponds to one adjustment step on scale 73. The adjustment of the mask support arm 29 with respect to the helmet body can so be achieved in predetermined, even adjustment steps. 15
    权利要求:
    Claims (12)
    [1] 1. Protective helmet with a helmet body designed to be worn on a human 5 head and to protect the same, comprising a respirator mask that has a mask body as well as a first and a second mask support arm that are attached on opposite sides of the mask body, and comprising a first and second mask retaining device 10 that are attached on opposite sides of the helmet body, where the first mask retaining device is provided to connect with the first mask support arm, and the second mask retaining device is provided to connect with the second mask support arm, 15 in which at least one of the first or second mask retaining devices is provided with a retaining device engagement section (1, 1') and at least one of the first or second mask support arms is provided with a support arm engagement section (21, 25), 20 in which the retaining device engagement section (1, 1') and the support arm engagement section (21, 25) are designed such that they engage with each other when the support arm engagement section (21, 25) is moved in an engagement direction (31) with respect to the retaining 25 device engagement section (1, 1), and in which the retaining device engagement section (1, 1') comprises a base plate (3), a U-shaped abutment wall (7) with bottom section (11) extending perpendicular to base plate (3), two opposing side sections (9a, 9b) and 30 an opening (33), that faces away from the engagement direction (31) and comprises a cover plate (5), which extends parallel and offset to base plate (3) at least 29 partially between the side sections (9a, 9b) of the U shaped abutment wall (7), characterised in that the each other facing inner surfaces (13a, 13b) of 5 side sections (9a, 9b) follow initially a curved path, where the distance between the each other facing inner surfaces (13a, 13b) of side sections (9a, 9b) becomes less in the direction towards the bottom section (11), and, following the curved path in the direction towards 10 the bottom section (11), a straight path is provided parallel to the engagement direction (31), and that the inner surface (15) of bottom section (11), which faces opening (33), follows a straight path perpendicular to the engagement direction (31) in the 15 direction from the first side section (9a) to the second side section (9b).
    [2] 2. Protective helmet according to claim 1, characterised in that the curved, each other facing inner 20 surfaces (13a, 13b) of side sections (9a, 9b) are curved in such a way that they follow a circular path that makes contact at one point with the inner surface (15) of bottom section (11). 25
    [3] 3. Protective helmet according to claim 1 or 2, characterised in that the retaining device engagement section (1, 1') is provided with a latching projection (17) that is formed on the base plate (3), that it points in engagement direction (31) and that it can be 30 elastically deformed in the direction perpendicular to base plate (3). 30
    [4] 4. Protective helmet according to claim 2 and 3, characterised in that the latching projection (17) extends flat in the plane of base plate (3) or parallel to the same, and features in its extension plane a part 5 circular contour (39) that follows, at a constant distance, the circular path along which the curved, each other facing inner surfaces (13a, 13b) of side sections (9a, 9b) extend. 10
    [5] 5. Protective helmet according to one of claims 1 to 4, characterised in that the cover plate (5) has, in the direction towards the opening (33) of abutment wall (7), a rectangular cut-out (41) in the plane of cover plate (5), where the dimensions of said rectangular cut-out 15 (41) in this plane in the direction perpendicular to engagement direction (31) conform to the dimensions of the bottom section (11) perpendicular to the engagement direction (31). 20
    [6] 6. Protective helmet according to one of claims 1 to 5, characterised in that at least one mask retaining device (45) is provided with an attachment plate (47) that is mounted on the helmet body, that the attachment plate (47) is provided with a guide rail (49) with which the 25 retaining device engagement section (1, 1') engages in such a way that the retaining device engagement section (1, 1') is guided parallel to the engagement direction (31) and is connected to the attachment plate (47) in an adjustable manner. 30
    [7] 7. Protective helmet according to claim 6, characterised in that a threaded spindle (55) is provided, which is able to rotate around its longitudinal 31 axis (57) and is attached to attachment plate (47) parallel to the engagement direction (31) and fixed in the direction of the longitudinal axis (57), and that the thread (59) of threaded spindle (55) engages with the 5 mating thread (61) of a mating thread element (63) of the retaining device engagement section (1, 1') in such a way that the rotation of threaded spindle (55) causes a linear movement of the retaining device engagement section (1, l') along guide rail (49). 10
    [8] 8. Protective helmet according to claim 7, characterised in that the threaded spindle (55) is provided on one end, viewed along its longitudinal axis (57), with a simple slot, a cross recess or a bolt head, 15 which is designed to engage with a spanner or screwdriver.
    [9] 9. Protective helmet according to claim 7, characterised in that the threaded spindle (55) is 20 provided on one end, viewed along its longitudinal axis (57), with a wingnut-shaped head (65).
    [10] 10. Protective helmet according to claim 9, characterised in that the wingnut-shaped head (65) is 25 retained elastically moveable on threaded spindle (55) in the direction of the longitudinal axis (57) of threaded spindle (55), that the wingnut-shaped head (65) is provided with a latching protrusion (67) parallel to longitudinal axis (57), and that the attachment plate 30 (47) is provided with a latching perforation (69) that is shaped to engage with latching protrusion (67). 32
    [11] 11. Protective helmet according to one of claims 6 to 10, characterised in that the guide rail (49) is provided with a scale (73) and that the retaining device engagement section (1, 1') is provided with a pointer 5 means that is designed to indicate an adjustment position of retaining device engagement section (1, 1') on scale (73) with respect to attachment plate (47).
    [12] 12. Protective helmet according to claim 11, 10 characterised in that the pointer means is a perforation (75) in retaining device engagement section (1, 1') through which a section of the scale (73) of the guide rail (49) below is visible.
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    同族专利:
    公开号 | 公开日
    AU2013200267B2|2014-04-10|
    EP2617307A1|2013-07-24|
    EP2617307B1|2014-04-30|
    DE102012000920A1|2013-07-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2594699B1|1986-02-25|1988-05-13|Gallet Sa|DEVICE FOR FIXING A RESPIRATORY MASK ON A PROTECTIVE HELMET|
    FR2676652B1|1991-05-23|1993-08-20|Gallet Sa|MOORING ARM OF A RESPIRATORY MASK ON A PROTECTIVE HELMET.|
    FR2707141B1|1993-07-07|1995-09-22|Peron Jean Yves|Connection device between a helmet and a mask.|
    FR2784588B1|1998-10-20|2000-12-29|Gallet Sa|PROTECTIVE HELMET AND ITS RESPIRATORY MASK HANGING DEVICE|
    DE102005024508B3|2005-05-27|2006-10-26|Dräger Safety AG & Co. KGaA|Gas mask fitting for security helmet has holder engaging receiver on gas mask to compensate for angular differences between mask and helmet|CN114028666A|2015-03-31|2022-02-11|费雪派克医疗保健有限公司|User interface and system for supplying gas to an airway|
    法律状态:
    2014-08-07| FGA| Letters patent sealed or granted (standard patent)|
    优先权:
    申请号 | 申请日 | 专利标题
    DE102012000920.8||2012-01-18||
    DE102012000920A|DE102012000920A1|2012-01-18|2012-01-18|helmet|
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