SAFETY HELMET WITH AN ADAPTER AND PROCESS FOR DETACHABLY FASTENING A MODULE

Abstract

A safety helmet (100) includes a helmet shell (7), with a bearing support structure (2, 5, 9, 21), with a helmet-side coupling point and with a module adapter (1). The bearing support structure (2, 5, 9, 21) is fastened to the helmet shell (7) on an inside. A helmet-side adapter coupling point of the module adapter (1) can be connected detachably to the safety helmet-side adapter coupling point of the module adapter (1). The module adapter (1) holds a module at the safety helmet (100). A process for fastening a module detachably to a safety helmet (100).

Claims

1. A safety helmet comprising: an arched helmet shell; a bearing support structure fastened on an inside to the helmet shell; a helmet-side coupling point forming a part of the bearing support structure or of the helmet shell and located within an area enclosed by the helmet shell; and a module adapter comprising a helmet-side adapter coupling point and a module-side adapter coupling point, wherein: the helmet-side adapter coupling point is connected or detachably connectable to the helmet-side coupling point; the module-side adapter coupling point is configured to be detachably connected to a module; and the module adapter is configured to hold the module at the safety helmet with the module connected to the module-side adapter coupling point and the helmet shell-side adapter coupling point connected to the helmet-side coupling point.

2. A safety helmet in accordance with claim 1, further comprising an additional module adapter comprising an additional adapter helmet-side adapter coupling point and an additional adapter module-side adapter coupling point, wherein the helmet-side coupling point is selectively connectable to the helmet-side adapter coupling point of the module adapter or to the additional adapter helmet-side adapter coupling point of the additional module adapter.

3. A safety helmet in accordance with claim 2, wherein the module-side adapter coupling point of the module adapter differs from the additional adapter module-side adapter coupling point of the additional module adapter based on geometry thereof or at least one dimension thereof or based on geometry thereof and at least one dimension thereof.

4. A safety helmet in accordance with claim 1, further comprising an additional helmet-side coupling point, wherein: the additional helmet-side coupling point forms a part of the bearing support structure or of the helmet shell; the additional helmet-side coupling point is located within the area enclosed by the helmet shell; and a head of a user of the safety helmet is located between the helmet-side coupling point and the additional helmet-side coupling point.

5. A safety helmet in accordance with claim 1, wherein: the module adapter has a predetermined breaking point; and the predetermined breaking point is located between the helmet-side adapter coupling point and the module-side adapter coupling point.

6. A safety helmet in accordance with claim 5, wherein a segment of the module adapter that is located between the predetermined breaking point and the helmet shell-side adapter coupling point is arranged entirely within the area enclosed by the helmet shell.

7. A safety helmet in accordance with claim 1, wherein: the helmet-side adapter coupling point of the module adapter comprises a U-shaped fastening element; the helmet-side coupling point comprises an opening and a web adjoining the opening; and the U-shaped fastening element is configured to be passed through the opening and be moved after passing through the opening into a position in which the U-shaped fastening element encompasses the web from two sides.

8. A safety helmet in accordance with claim 7, wherein: the U-shaped fastening element has two first openings and the web has an additional opening; and a screw is passed or is passable through both the first openings and the additional opening.

9. A safety helmet in accordance with claim 1, wherein the module adapter is located entirely within the area enclosed by the helmet shell.

10. A safety helmet in accordance with claim 1, wherein the module adapter extends in a plane and has a spacer at right angles or in an oblique position relative to the plane.

11. A safety helmet in accordance with claim 1, wherein: the detachable connection between the helmet-side adapter coupling point and the helmet-side coupling point is establishable by a linear displacement of the module adapter in a direction of the helmet-side coupling point; or the detachable connection between the module-side adapter coupling point and a module is establishable by a linear displacement of the module in the direction of the module-side adapter coupling point; or the detachable connection between the helmet-side adapter coupling point and the helmet-side coupling point is establishable by a linear displacement of the module adapter in a direction of the helmet-side coupling point and the detachable connection between the module-side adapter coupling point and a module is establishable by a linear displacement of the module in the direction of the module-side adapter coupling point.

12. A safety helmet in accordance with claim 1, wherein: the bearing support structure comprises a bearing ring and a holding ring; the bearing ring encompasses a head of a user of the safety helmet; the holding ring is connected to the helmet shell and to the bearing ring; the holding ring is located at least partially between the bearing ring and the helmet shell; and the helmet-side coupling point forms a part of the holding ring such that the module adapter is connected or detachably connectable to the holding ring.

13. An arrangement comprising: a module; and a safety helmet comprising: an arched helmet shell; a bearing support structure fastened to the helmet shell; a helmet-side coupling point forming a part of the bearing support structure or of the helmet shell and located within an area enclosed by the helmet shell; and a module adapter comprising a helmet-side adapter coupling point and a module-side adapter coupling point, wherein: the helmet-side adapter coupling point is detachably connected or connectable to the helmet-side coupling point; the module-side adapter coupling point is detachably connected or connected to the module; and the module adapter holds or is configured to hold the module at the safety helmet with the module detachably connected or connectable to the module-side adapter coupling point and the helmet shell-side adapter coupling point detachably connected or connectable to the helmet-side coupling point, wherein the module is detachably connected to connectable to the module adapter of the safety helmet.

14. An arrangement in accordance with claim 13, wherein the module comprises at least one of: an output unit for outputting acoustic messages to a user of the safety helmet; an input unit for receiving acoustic messages from a user of the safety helmet; a communication module for receiving and/or transmitting radio waves; an alarm unit for outputting an alarm perceptible acoustically and/or in a tactile manner and/or visually; a vital parameter sensor for measuring vital parameter of a user of the safety helmet; a geoposition sensor for measuring a geoposition of the module; a blower configured to generate an air stream in the space between the helmet shell and the head of the user of the safety helmet; a heater configured to heat the space between the helmet shell and the head of the user of the safety helmet; a light source; a power supply unit; and a data storage device.

15. A process for inserting a module into a safety helmet, the process comprising the steps of: providing a safety helmet comprising: an arched helmet shell; a bearing support structure; a module adapter; and a helmet-side coupling point, wherein the bearing support structure is fastened to the helmet shell on an inside thereof, the helmet-side coupling point forms a part of the bearing support structure or of the helmet shell and is located within an area enclosed by the helmet shell, and the module adapter comprises a helmet-side adapter coupling point and a module-side adapter coupling point; providing a module; detachably connecting the helmet-side adapter coupling point to the helmet-side coupling point with a movement of the module adapter towards the helmet-side coupling point, until the helmet-side adapter coupling point engages with the helmet-side coupling point; and detachably connecting the module to the module-side adapter coupling point with a movement of the module-side adapter coupling point until the module engages with the module-side adapter coupling point.

16. A process in accordance with claim 15, wherein: the helmet-side coupling point comprises: an opening; and a web adjoining the opening; the helmet-side adapter coupling point of the module adapter comprises a U-shaped fastening element; and the step of detachably connecting the helmet-side adapter coupling point to the helmet-side coupling point comprises the following steps: passing the fastening unit of the module adapter through the opening of the helmet-side coupling point; and moving the U-shaped fastening element passed through the opening into a position in which the U-shaped fastening element encompasses the web of the helmet-side coupling point from two sides.

17. A process in accordance with claim 16, wherein the U-shaped fastening element, which encompasses the web from two sides, is detachably fastened to the web.

18. A process in accordance with claim 15, further comprising providing a computer program which is executable on a computer, wherein the execution causes the computer to actuate a 3D printer such that the actuated 3D printer produces the at least one of a bearing support structure, the helmet-side coupling point and the module adapter.

19. A process according to claim 15, further comprising providing a 3D printer, which is configured to produce at least one of the bearing support structure, the helmet-side coupling point and the module adapter.

20. A safety helmet process comprising: providing a safety helmet comprising: an arched helmet shell; a bearing support structure fastened to the helmet shell; a helmet-side coupling point connected to the bearing support structure or to the helmet shell and located within an area enclosed by the helmet shell; and a module adapter comprising a helmet-side adapter coupling point and a module-side adapter coupling point, wherein: the helmet-side adapter coupling point is connected or detachably connectable to the helmet-side coupling point; the module-side adapter coupling point is configured to be detachably connected to a module; and the module adapter is configured to hold the module at the safety helmet with the module connected to the module-side adapter coupling point and the helmet shell-side adapter coupling point connected to the helmet-side coupling point; providing a 3D printer configured to produce of the bearing support structure, the helmet-side coupling point and the module adapter; and producing at least one of the bearing support structure, the helmet-side coupling point and the module adapter with the 3D printer.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In the drawings:

[0062] FIG. 1 is a perspective view showing a safety helmet with an inside shown;

[0063] FIG. 2 is a perspective detail view showing the detachable fastening of the module adapter to the holding ring in a viewing direction from below;

[0064] FIG. 3 is a perspective view showing the holding ring of the safety helmet from FIG. 1 with an inserted module adapter;

[0065] FIG. 4 is a perspective view showing the holding ring of the safety helmet from FIG. 1 without the module adapter;

[0066] FIG. 5 is a perspective view showing a module adapter from a first viewing direction;

[0067] FIG. 6 is a perspective view showing the module adapter from FIG. 5 from a second viewing direction;

[0068] FIG. 7 is a perspective view showing the module adapter from FIG. 5 from a third viewing direction; and

[0069] FIG. 8 are perspective and sectional views showing three steps during the insertion of the module adapter.

DESCRIPTION OF PREFERRED EMBODIMENTS

[0070] Referring to the drawings, the present invention pertains to a safety helmet, which is used by firefighters, police, rescue workers and other rescue team members in order to better protect the head from mechanical, chemical and thermal effects. The person who is using the safety helmet will hereinafter be called “the user.” As usual, the safety helmet comprises an arched helmet shell made of a hard material as well as a bearing support structure, which holds the safety helmet on the head of the user. An inner lining is preferably located between the head of the user and the inner side of the helmet shell.

[0071] The present invention shows a way of detachably connecting a module to the safety helmet. Examples of such a module, which is connected to the safety helmet and is therefore available to the user of the safety helmet, are [0072] a speaker to output messages in an acoustic form to the user, [0073] an alarm unit, which outputs an alarm perceptible acoustically or in a tactile manner to the user, [0074] a microphone, by means of which the user can enter acoustic messages, [0075] a communication module (receiver and/or transmitter) to transmit messages to the safety helmet and/or from the safety helmet by means of radio waves, [0076] a vital parameter sensor, which measures a vital parameter of the user, for example, the heart rate or the respiration rate or the blood pressure thereof, [0077] a geoposition sensor, which measures its own current geoposition and hence the geoposition of the user, [0078] a removable eye protection, for example, a visor or sunglasses, [0079] a removable particle mask, which protects the user from particles, [0080] a blower, which generates an air stream in the space between the safety helmet and the head of the user and thereby cools the head, [0081] a heater, which heats air in the space between the safety helmet and the head of the user, [0082] a power supply unit, [0083] a light source, [0084] a data storage device, and [0085] a sensor for harmful substances, especially a gas sensor.

[0086] Since the module is fastened to the safety helmet, the module is located at a defined position relative to the head of the user. The module can be fastened to the safety helmet in the exemplary embodiment such that no components of the safety helmet are located between the head of the user and the module. In particular, a damping or other attenuation or distortion of radio waves is caused thereby. The helmet shell of the safety helmet protects the module to a certain extent from environmental effects, especially the effect of mechanical forces in the vertical direction or obliquely from above.

[0087] In one embodiment, a camera is fastened to the helmet on the outside. A line, e.g., a glass fiber line, leads to the data storage device in the interior of the safety helmet. In another embodiment, a light is fastened to the safety helmet on the outside. An electrical line leads from the power supply unit to the light.

[0088] FIG. 1 shows a safety helmet 100 in a perspective view. This safety helmet 100 comprises the following components: [0089] an arched helmet shell 7 made of a hard material, [0090] an arched shock-absorbing shell 6 in the interior of the helmet shell 7, which absorbs kinetic energy, [0091] a horseshoe-shaped front holding ring part 2 under a front area of the shock-absorbing shell 6, which is connected to the helmet shell 7, [0092] a rear holding ring part under a rear area of the shock-absorbing shell 6, which is connected to the helmet shell 7, [0093] a visor 4 between the helmet shell 7 and the front holding ring part 2, which is pivotably fastened to the front holding ring part 2, [0094] sunglasses in the form of an additional visor 22, wherein the visor 22 is fastened pivotably to the holding ring part 2, [0095] a front bearing ring part 5, which is in contact with the forehead of the user, [0096] two rear bearing ring parts 9, both of which are connected to the front bearing ring part 5 in an articulated manner and are in contact with the back of the head of the user, [0097] a handwheel 8 at the rear end of the helmet shell 7, by means of which a user can displace the two rear bearing ring parts 9 relative to one another and thereby adapt the length of the bearing ring 5, 9 to the circumference of the head of the user, and [0098] a left module adapter 1, which is fastened detachably to the front holding ring part 2 and in the vicinity of the left ear of the user and is capable of holding a module 30 (see FIGS. 1 and 3).

[0099] The front holding ring part 2 as well as the rear holding ring part, not shown, are in contact on the inside with the helmet shell 7 and are mechanically connected to the helmet shell 7. The two parts together form a circular holding ring. A distance develops between the front holding ring part 2, on the one hand, and the bearing ring parts 5 and 9, on the other hand. A rigid intermediate piece 21 bridges over the distance between the front holding ring part 2 and the front bearing ring part 5.

[0100] A right module adapter 1.1 (schematically in FIG. 1 with dotted lines, behind the helmet shell 7) may be fastened to the front holding ring part 2 close to the right ear of the user and is preferably mirror-symmetrical to the left module adapter 1. The right module adapter 1.1 can carry a further module 30.1 (in FIG. 1 also behind the helmet shell 7).

[0101] The designations “left,”, “right,” “front,” “rear,” “above” and “under” pertain to the orientation of the safety helmet 100 when the user uses this safety helmet 100 and is looking straight forward. This viewing direction BR of the user looking straight forward is shown in some figures.

[0102] The module adapter 1 or each module adapter 1, 1.1 provides a respective detachable mechanical connection between the interior of the safety helmet 100 and a module 30, 30.1. A helmet-side adapter coupling point of the module adapter 1 is adapted to a corresponding helmet-side coupling point in the interior of the safety helmet 100, which will be described in more detail below. A holding arm of the module adapter 1 is adapted to the module 30 to be received. Different modules with the same coupling point can be connected one after another with the same module adapter 1 to the front holding ring part 2. Only the module adapter needs to be replaced to replace a module by another module with a different coupling point, while the rest of the safety helmet 100 can remain unchanged. The geometry of the module adapter 1 can be configured such that the module 30 is held and carried at a desired point relative to the bearing ring 5, 9.

[0103] In addition, the module adapter 1 preferably provides a predetermined breaking point. If a higher mechanical load is applied to the interior of the safety helmet 100, the module adapter 1 will be the first to break, before the module 30 being held or the front holding ring part 2 being damaged. After the module adapter 1 has broken at the predetermined breaking point, the module 30 is preferably not connected mechanically to the safety helmet 100 any more. This reduces the risk of damage to the module 30.

[0104] FIG. 2 shows a detail of the safety helmet 100 from a nearly vertical viewing direction from below. It can be seen how the left module adapter 1 is fastened to the front holding ring part 2.

[0105] FIG. 3 and FIG. 4 show the front holding ring part 2 of the safety helmet 100 from FIG. 1. The left module adapter 1 (in FIG. 3 only) as well as the following components of two helmet-side coupling points, which belong to the horseshoe-shaped front holding ring part 2 in the exemplary embodiment, can be seen: [0106] a rectangular left opening 3.l and a rectangular right opening 3.r close to the two free ends of the front holding ring part 2, [0107] a left web 10.l and a right web 10.r at two ends of the front holding ring part 2, which adjoin the opening 3.l and 3.r, respectively, as well as - a left through hole 11.l and a right through hole 11.r in the web 10.l and 10.r, respectively.

[0108] The left helmet-side coupling point comprises the parts 3.l, 10.l and 11.l. The right helmet-side coupling point comprises the parts 3.r, 10.r and 11.r. If a respective module adapter 1, 1.l with a module 30, 30.l is fastened at both helmet-side coupling points, the head of the user is located between these two modules 30 and 30.l.

[0109] To connect a module adapter 1 to the front holding ring part 2, a U-shaped fastening unit 12 of the adapter 1 is passed through an opening 3.l, 3.r and inserted (pushed) over the adjacent web 10.l, 10.r, doing so such that the two legs of the U enclose the web 10.l, 10.r from two sides. A snap connection is established hereby. A screw 20 is then inserted and is now passed through two holes in the two legs as well as through the through hole 11.l, 11.r, cf. FIG. 8c). These holes may be threaded holes. It is also possible that the screw 20 cuts a thread into the two legs of the fastening unit 12 and/or into the web 10.l, 10.r while it is being screwed in. The module adapter 1 is connected to the front holding ring part 2 even without a screw thanks to the snap connection.

[0110] FIG. 5 through FIG. 7 show the left module adapter 1 in perspective views from three different viewing directions. The module adapter 1 extends in a plane and comprises the following components: [0111] The U-shaped fastening unit 12 with two legs 12.1, 12.2, [0112] two webs 17.1, 17.2 at the leg 12.1, which point towards the other leg 12.2, [0113] two holes 14.1, 14.2 in the two legs 12.1, 12.2, optionally configured as threaded holes, [0114] a cylindrical border 18 at the leg 12.1, which has the form of a circular ring (torus) and encloses the hole 14.1, [0115] an elongated holding arm 13, which is connected to the fastening unit 12 on one side and continues in the leg 12.1, [0116] a holding element 15 at the free end of the holding arm 13, into which a corresponding holding element of a module can be inserted, [0117] a spacer 16 on the holding arm 13 in the form of a web, wherein the spacer 16 is at right angles to the plane in which the module adapter 1 extends, and [0118] a groove 19 over the entire width of the holding arm 13 in parallel to the spacer 16.

[0119] The fastening element 12 with the legs 12.l, 12.r and the two holes 14.l, 14.r belong to the helmet-side adapter coupling point of the module adapter 1. The holding element 15 belongs to the module-side adapter coupling point.

[0120] A module can be connected to the module adapter 1 by a coupling point of the module being inserted (pushed) into the holding element 15. The connection can consequently be established by a simply linear movement.

[0121] The two webs 17.1, 17.2 divert a force acting on the fastening element 12 to the front holding ring part 2 and therefore reduce the risk that a pressure acting from the outside on the U-shaped fastening unit 12 causes a leg 12.1, 12.2 to break. The spacer 16 reduces the risk of the holding arm 13 breaking off from the fastening unit 12.

[0122] The groove 19 provides a predetermined breaking point. In case of a sufficiently high mechanical load, the module adapter 1 breaks at this predetermined breaking point 19 in itself. At least the segment of the module adapter 1 that is located between the predetermined breaking point 19 and the fastening element 12 is located in the exemplary embodiment entirely within the area that is enclosed by the arched helmet shell 7. The module 30 itself may project/protrude over this area. If the safety helmet 100 is placed on the ground with the opening pointing downward, the module adapter 1 breaks, as a rule, at the predetermined breaking point 19, and the module 30 and the helmet-side coupling point 3.l, 10.l and 3.r, 10.r, respectively, remain undamaged in many cases.

[0123] The left module adapter 1 is preferably fastened at the front holding ring part 2 as follows: [0124] The fastening unit 12 of the module adapter 1 is inserted into the left opening 3.1 in the front holding ring part 2. The bevel at the leg 12.2 makes it easier to insert the fastening unit 12 into the left opening 3.1. [0125] The fastening unit 12 is then pushed over the left web 10.1 at the front holding ring part 2. The two legs 12.1, 12.2 as well as the border 18 enclose the left web 10.1 from two sides. In one embodiment, the distance between the legs 12.1, 12.2 is greater than is the thickness of the left web 10.1, so that only a relatively weak force must be applied during the pushing. It is also possible that the two legs 12.1, 12.2 clamp the web 10.1 between themselves after the placement. [0126] A screw 20, not shown in FIG. 5 through FIG. 7, is screwed in and is passed in the process through the two holes 14.1, 14.2 as well as through the through hole 11.1.

[0127] Since the thread of the screw 20 does not come into contact with the through hole 11.1, this through hole 11.1 is also not worn off during several assembly operations. In one embodiment, the screw 20 cuts a thread into the two legs 12.1, 12.2. The two legs 12.1, 12 and the web 11.l, 1.r prevent the inserted and fastened module adapter 1 from being able to rotate relative to the front holding ring part 2.

[0128] FIG. 8 shows three steps during the insertion of the left module adapter 1.

[0129] The module adapter 1 is brought in the situation designated by a) into a position above the left through hole 11.l. The leg 12.2 points towards the front holding ring part 2. The leg 12.2 is passed through the through hole 11.l by a movement in the direction of arrow P1.

[0130] The leg 12.2 is passed completely through the through hole 11.l in the situation shown in b). The module adapter 1 is displaced now in the direction of arrow P2. The direction P2 is at right angles to the direction P1. The legs 12.1 and 12.2 enclose the web 10.l in the holding ring 2 from both sides after the displacement and clamp it in one embodiment between themselves. A snap connection is established hereby.

[0131] As is shown in c), a screw 20 is now screwed in through the two holes 14.1 and 14.2 in the two legs 12.1 and 12.2. This screw 20 is also passed through the through hole 11.l. The screw 20 engages (meshes) with the hole 14.2 in the example shown, without projecting over the leg 12.2.

[0132] A right module adapter can be inserted in the same manner into the right helmet-side coupling point 3.l, 10.r.

[0133] In the embodiment described so far, the module adapter 1 can be fastened at the front holding ring part 2. It is also possible to fasten the module adapter 1 at the front bearing ring part 5 at the rear bearing ring part 9. An equivalent of the web 10.l, 10.r is fastened in this case at a distance from the bearing ring 5, 9, so that an intermediate space, into which the leg 12.2 can be inserted (pushed), is formed between the corresponding web 10.l, 10.r and the bearing ring 5,9.

[0134] While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.

List of Reference Characters

[0135] 1 Left module adapter; it holds the module 30 at the front holding ring part 2

[0136] 1.1 Right module adapter

[0137] 2 Front holding ring part, fastened on the inside to the helmet shell 7; it holds the left module adapter 1 and a mirror-symmetrical right module adapter

[0138] 3.l Opening in the front holding ring part 2, through which the fastening unit 12 of the left module adapter 1 is passed

[0139] 3.r Opening in the front holding ring part 2, through which the fastening unit of the right module adapter is passed

[0140] 4 Pivotable visor, fastened to the front holding ring part 2

[0141] 5 Front bearing ring part; it is in contact with the forehead of a user; it is connected to the two-part rear bearing ring part 9 in an articulated manner

[0142] 6 Arched shock-absorbing shell in the interior of the helmet shell 7

[0143] 7 Arched helmet shell; it encloses the shock-absorbing shell 6; holds the front holding ring part 2 and the bearing ring 5, 9

[0144] 8 Handwheel for adjusting the head size; it acts on the rear bearing ring part 9

[0145] 9 Two-part rear bearing ring part; connected to the front bearing ring part 5 in an articulated manner

[0146] 10.l Left web at the front holding ring part 2; it holds the left module adapter 1

[0147] 10.r Right web at the front holding ring part 2; it holds the right module adapter

[0148] 11.l Left through hole in the left web 10.l, through which a screw is passed for fastening the left module adapter 1

[0149] 11.r Right through hole in the right web 10.r, through which a screw is passed for fastening the right module adapter

[0150] 12 U-shaped fastening unit of the module adapter 1; it comprises the two legs 12.1, 12.2; belongs to the helmet-side adapter coupling point

[0151] 12.1 Leg of the fastening unit 12; it extends the holding arm 13; has the hole 14.1; carries the border 18

[0152] 12.2 Leg of the fastening unit 12; it has the hole 14.2

[0153] 13 Elongated holding arm of the module adapter 1

[0154] 14.1 Hole in the leg 12.1, extended through the border 18; optionally configured as a threaded hole; belongs to the helmet-side adapter coupling point

[0155] 14.2 Hole in the leg 12.2; optionally configured as a threaded hole; belongs to the helmet-side coupling point

[0156] 15 Holding element at the free end of the holding arm 13; it belongs to the module-side adapter coupling point

[0157] 16 Spacer on the holding arm 13

[0158] 17.1,

[0159] 17.2 Webs at the leg 12.1

[0160] 18 Cylindrical border 18 at the leg 12.1

[0161] 19 Groove in the holding arm 13; it provides a predetermined breaking point of the module adapter 1

[0162] 20 Screw; it holds the module adapter 1 at the front holding ring part 2; passed through the two holes 14.1 and 14.2 as well as through the through hole 11.l

[0163] 21 Rigid intermediate piece between the front holding ring part 2 and the front bearing ring part 5

[0164] 22 Sunglasses in the form of an additional visor; fastened pivotably to the front holding ring part 2

[0165] 30 Module at the left module adapter 1

[0166] 30.1 Module at the right module adapter 1.1

[0167] BR Viewing direction of a user of the safety helmet 100, who is looking straight forward