WO2016037845A1

WO2016037845A1 - Protective helmet, in particular motorcycle helmet, having a swivelable and removable chin part

Info

Publication number: WO2016037845A1
Application number: PCT/EP2015/069406
Authority: WO
Inventors: Bernhard Neuheuser; Udo Wattendorf
Original assignee: Bayerische Motoren Werke Aktiengesellschaft
Priority date: 2014-09-10
Filing date: 2015-08-25
Publication date: 2016-03-17
Also published as: DE102014218041A1; EP3190913B1; ES2728969T3; EP3190913A1

Abstract

The invention relates to a protective helmet, in particular motorcycle helmet, comprising a jet helmet part (1A, 1) and a chin part (2, 3) which are detachably connected to each other via a coupling part (3, 4) and which can be swiveled relative each other via an articulated connection that is designed as a multiple coupling mechanism (20, 21).

Description

Hard hat, especially motorcycle helmet, with swiveling and removable

chin

The invention relates to a protective helmet, especially motorcycle helmet, with repeatedly pivoting and repeatedly removable Barem chin part, the removal of the chin part can be done in particular without tools. The intended use of the protective helmet according to the invention is not limited to motorcycles but also extends to other passenger-guided land, air and water vehicles, such as e.g. open racing vehicles, snowmobiles, gliders, racing boats, hang gliders, etc.

In general, a distinction is made between integral helmets, open helmets, flip-flops and multi-helmets in the case of such protective helmets. "Integral helmets" have a fixed chin part and preferably a visor which can be completely closed. "Half-shell helmets", also known as open helmets, do not have a fixed chin part. There are variants with built-in visor or with sun visor, but also half shells with a deep-drawn visor and a little further forward drawn sides, which are generally referred to as 3/4 helmets.

Half-shell helmets have to protect the forehead, ears and neck. "Flip-up helmets" are a variation of the integral helmet that folds up the chin area, which is especially recommended for people who wear glasses and make it easier to remove the helmet after an accident From a lower integral helmet position located at the chin height, swivel it into an especially higher upper j-helm position raised by 90 °. "Multihelmets" are helmets with

Rebuilding options, usually the, to remove the chin part, so that they can be used either as a full face helmet or open face helmet. "Multihelme" with repeated

Detachable chin part allows the chin part to be removed from a lower integral helmet position at chin height to create a jet helmet or a 3/4 helmet. In the case of "multi-helmets", the chin part can, in addition to the solubility, also have a swiveling effect as with the "flip-up helmets".

The applicant's patent EP 6 851 177 B1 discloses a "multi-helmet" especially for motorcycles, the chin guard without tools

(de) is mountable. The helmet has a joint with a joint plate in which a

Locking disc is inserted v rotatable. The locking disc s itself can take a driving web of the chin guard. In a certain angular position of

Locking disc to the hinge plate can pull off the chin guard or postpone. Since the joint for the chin part is a swivel joint with only one axis of rotation, has the chin part in the upwardly pivoted Jethelm position due to the higher inflow surface for the wind an unfavorable aerodynamics and a high

Focus on, thereby increasing the load on the neck muscles of the driver.

"Multi-helmets" with non-pivoting, but removable chin part, such as known from EP 2 438 824 A1, can only be used either as full face helmet or as open face helmet or 3/4 helmet and may need to be rebuilt time consuming and laborious with tools In addition, the chin part removed from the jet helmet or 3/4 helmet must be stowed away on the motorcycle for further transport, which is not always possible, or else it is not carried along and therefore can not be reinstalled until it is returned to the storage location.

From EP 0 797 935 B1 is a "flip-up helmet" with swivel, but not

Detachable chin part known. He has a folding mechanism between Jethelmteil and chin instead of a simple swivel ks a four-bar linkage on each side of the linkage, whereby the problem of deteriorated aerodynamics and the higher center of gravity with folded chin part compared to the "flip-up helmets" or "multi-helmets" with simple Swivel joints is improved. The helmet is therefore more suitable as a full face helmet and less than open face helmet, especially at speeds above 50 km / h.

It is therefore an object of the invention to develop a "multi-helmet" with pivoting and removable chin part such that it also at higher speeds both in a I ntegralhelmstellung with mounted and folded forward and down chin part, as well as in a Jethelmstellung with up or back The chin part should be easily and quickly pivoted both between the full face helmet position and the open face position, as well as completely removed. The (De) mounting of the chin part should be possible without tools.

This object is achieved by the subject of claim 1. The dependent claims and the further description and the drawings contain advantageous developments of the invention.

The object is achieved dadurc h, that the helmet has a Jethelmteil and a chin part, which are releasably connected to each other via a coupling part and are pivotable relative to each other via a joint formed as a multi-link coupling mechanism. By the protective helmet according to the invention, the advantages of a conventional flip-up helmet with 4-joint connection of a pivoting, but not removable chin part with the advantages of a conventional multi-helmets with a simple swivel joint of a swiveling and removable chin part can be combined. Thus, in the protective helmet according to the invention, the advantages of improved aerodynamics and a lower center of gravity in the Jethelm position and a simple and quick conversion of the helmet between a maximum enclosing full face helmet and a use as open face helmet or 3/4 helmet by completely disassembling the chin part combined.

The protective helmet according to the invention comprises a Jethelmteil and a chin part, wherein the Jethelmteil not only in classic Jethelm shape, but also smaller in the form of a Haibschalenhelms or larger in the style of a 3/4 helmet with further down and front protective parts for the cheek and jaw area can be executed. The chin part is then correspondingly with shorter or longer webs in the cheek and

Jaw area formed and can therefore be present in the minimal extreme case only in the chin area and in the maximum extreme case to the ear area out.

The chin part can according to the invention at least between a front lower

Integral helmet position in an up to about 180 ° to about 180 ° to this upward pivoted upper and / or rear Jethelm position relative to Jethelmteil

be pivoted and locked in these extreme positions, but also in intermediate positions or Überxtremsteilungen.

Multi-link coupling gears convert Drehbewe conditions in rectilinear or he curved movements. They consist of articulated gear members, one of which may be a housing or the helmet. They provide a coupling of at least two movable levers with a coupling ago, the chin part can form the coupling.

Basically, there are multi-link coupling gear with five, six, eight or even more links. In a particularly preferred embodiment of the invention, the multi-link coupling mechanism is a four-bar linkage or more particularly

Four-pivot joint formed, so with four levers and four hinges, the helmet can represent one of the lever and the chin part a coupling between the levers. The coupling gear can preferably be designed in the manner of the four-bar linkage of EP 0 797 935 B1. But it can also deviate from other forms, as long as the function of a four-bar mechanism is met, according to which the movement of the chin part when pivoting relative to Jethelmteil is a deviating from a pure orbit trajectory, which the chin part when pivoting from the integral helmet position in the open face position as close as possible to the outer surface of Jethelmteils approach leads. The four-bar linkage thus reduces air resistance and reduces the center of gravity of the helmet in the Jethelmstellung. The movement of the articulation between the Jethelmteil and the chin part is a superposition between one

Pivoting about a Drehpun kt approximately on a circular path around e.g. 45 °, 60 ° or 90 ° to 180 ° and a linear movement relative to this pivot point to the surface of the helmet.

Regularly, a coupling part, each with a coupling gear left and right of a face opening of the helmet and there in particular in an ear area of the protective helmet is arranged. The four joints on the two sides of the protective helmet are in particular the longitudinal center axis of the protective helmet, i. in the direction of travel mirrored, but otherwise identical.

The coupling member provides a releasable connection between the chin part and the Jethelmteil ago. Preferably, two coupling parts serve on the two sides of the

Protective helmets are arranged symmetrically with respect to its running in the direction of travel longitudinal central axis. Each coupling part comprises a first coupling element on the chin part, as well as a further or second coupling element cooperating therewith on the open face part, wherein both coupling elements form a corresponding coupling pair. They can each have at least one male or female coupling member which engage with each other for mutual releasable form-locking coupling of the coupling elements.

It may also have more than one corresponding pair of coupling elements from

Coupling part comprises or each coupling element also have a plurality of coupling members, which are each arranged parallel and / or serial to the coupling direction, whereby the stability of the coupling can be increased.

The coupling part preferably provides a coupling that can only be released intentionally. For this purpose, it comprises a safeguard against unintentional release of the coupling elements in a direction opposite to the coupling direction. This can be achieved according to the invention via a spring-loaded snap-lock connection or a recessed connection (e.g.

Bayonet connection) happen, which preferably automatically when coupling positively engage each other and require a separate and therefore voluntary operation by a user for decoupling.

In principle, the coupling gear and the coupling part and thus the functions of pivoting and Koppeins of the chin part can be arranged spatially separated from each other on Jethelmteil. According to an advantageous embodiment of the invention, the coupling gear can be arranged on the coupling part and thus on the Kopplungsele element of the chin part or on the coupling element of Jethelmteils. Thus, both functions can be combined in one component, whereby the protective helmet can be made simpler, because reduce the number of functional parts for pivoting and coupling and their assembly costs.

The multi-link coupling gear can be on the Jethelmteil or on that

Coupling element of the coupling part are located, which is connected to the Jethelmteil. There it can be easily anchored to the chin part because of the larger dimensions of the Jethelmteils. Are there several different chin parts to the same Jethelmteil e.g. for different purposes (road, terrain), this arrangement requires only a single linkage on Jethelmteil. According to an advantageous embodiment of the invention, the coupling gear can be located on or on a coupling element which is connected to the chin part. Because the chin part is more manageable than the open face helmet part of the helmet, it can be easier to assemble, maintain, repair and clean, in particular of the linkage. In addition, then that remains

Coupling gear not useless on Jethelmteil when the chin part is removed.

After an alternative arrangement of the coupling mechanism to the undivided arrangement of the invention, the coupling mechanism as well as the coupling part can be formed divisible in at least two coupling transmission parts. The respective coupling gear parts can thus be arranged on different coupling elements, so that when

Decoupling the Kopplungsele elements from each other and the coupling gear is released. This variant may be due to better accessibility to the components of the

Coupling gear such as gear levers and lever bearings have advantages in manufacturing, cleaning, maintenance and repair.

When forming the linkage partly on the first and partly on the second

Coupling element are releasable positive and / or non-positive

Getriebeverbind ments between the components of the linkage, so for example between transmission shafts and / or gear levers required. The transmission connections provide at coupling of the two elements Kopplungsele a full coupling mechanism with a force-transmitting connection between the gear parts of the linkage ago. Friction surfaces between the gear shafts and / or gear levers, groove-engaging pins or webs, wedge-surface pairs, knurling and toothing, etc. can serve as interlocking or frictional transmission connections. Positive gear connections are preferred because they ensure a reliable function of the coupling of the gear parts to a full coupling mechanism.

According to a further advantageous embodiment of the invention, the first and the second coupling element of the coupling part may each be formed approximately disc-shaped. The flat design of the disk-shaped coupling elements space-saving installation of the coupling elements on a shell of Jethelmteils and the chin part is possible. In the shell of the Jethelmteils and the chin part, a respective indentation may be formed, in which the coupling element can be inserted and there preferably by inexpensive insoluble cohesive bonding methods, such. Welding, riveting, gluing, casting or molding, can be fastened.

According to a further advantageous embodiment of the invention, a first

Coupling element of a coupling member having a flat disc-shaped wall as a male coupling member and a second coupling element of the same coupling part a correspondingly shaped, open at least in the coupling direction pocket as a female coupling member, wherein the pocket of the second coupling element serves to receive the wall of the first coupling element. With the insertion of the wall in the pocket, the coupling of the coupling part is completed. The bag can largely overshadow the wall, so that the wall is completely fixed in the two spatial directions perpendicular to the direction of insertion and in the direction of insertion. In the

Insert direction opposite direction, it can be fixed by activating the above-mentioned fuse.

According to a further advantageous embodiment of the invention, the wall may have a U-shaped tab which projects transversely to the insertion direction or coupling direction of the wall and in turn engages around a portion of the bag in the coupling state. It is advantageously attached to a rear edge of the wall in the coupling direction and can embrace the pocket in the region of its open side for insertion. The tab can provide a clamping and thus a rattle-free recording of the wall in the pocket. In addition, it can accommodate at least a portion of the above-mentioned fuse, which holds the coupled elements against the coupling direction. In the coupled state surface pairs of each one coupling surface of the first coupling element on the one hand and the other coupling element on the other hand lie flat against each other. According to the invention, the coupling surfaces of cooperating surface pairs, which are in themselves in a plane parallel to the coupling direction, conically taper, so that they cause a centering of the coupling elements in the coupling direction during insertion. The conicity can also lead to a clamping action of the coupling elements, which brings a wear and noise-poorer connection of the coupling elements with it. Because lack of movement possibility of the two coupling elements relative to each other in the coupled state, they can be kept rattling. The conicity of the coupling surfaces can be in one or both

Spaces are present that are orthogonal to the coupling direction.

Basically, the chin part and the Jethelmteil in the integral helmet position and the Jethelmstellung and in any position or only in selected positions between be coupled or decoupled. In particular, in that embodiment in which the coupling part and the coupling mechanism are connected in one component, according to a further advantageous embodiment of the invention, the coupling member can be actuated only in a defined position or position and mechanically blocked in all other positions by the coupling mechanism. The coupling part and the coupling gear s ind to be designed such that the coupling part can be operated only in dependence on the position of the linkage. The coupling mechanism can for example permit a successful actuation of the coupling part exclusively in the integral helmet position. This can prevent the chin part from being accidentally removed

Jethelmteil can solve, especially when the chin part is pivoted while driving relative to the Jethelmteil.

As the material of the coupling part or the coupling elements, metal, e.g. Diecast aluminum, a metal-plastic compound or a fiberglass and / or carbon fiber composite (GRP, CFK) come into consideration.

The principle of the invention will be explained in more detail below with reference to a drawing by way of example. In the drawing show:

FIG. 1 shows a schematic 3D representation of a protective helmet,

FIG. 2 shows a schematic 3D illustration of the protective helmet according to FIG

Jethelmteil dismantled chin part, Figure 3 is a schematic 3D representation of an attached to Jethelmteil

Coupling element,

Figure 4 is a schematic 3D representation of a chin part attached

Coupling element,

Figure 5 is a schematic 3D representation of the coupling of the coupling elements of

FIGS. 3 and 4,

FIG. 6 shows a sectional view along the section line VI-VI of FIG. 3,

FIG. 7 shows a schematic sectional view of the coupling elements which are not yet completely coupled to one another,

Figure 8 is a schematic partial sectional view along the section line VIII-VIII of the figure

7th

Fig. 1 shows a protective helmet for a motorcyclist from a Jethelmteil 1 and a bow-shaped chin part 2. The chin part 2 is about a laterally mounted approximately in an ear portion of the Jethelmteils 1 coupling part 3 held removable and can be up and down in the direction of arrows 4 pivoting a later-described trajectory, rather than a pivot point as in a conventional hinge. The chin part 2 is shown in a lower fold-down full-face helmet position and can be pivoted upwards by about 90 ° in a Jethelm position.

The protective helmet has a visor 5 made of transparent plastic, which is mounted independently of the chin part 2 in the direction of arrow 6 pivotally on Jethelmteil 1. The visor 5 and the chin part 2 are cut in the region of the coupling part 3 and shown with dashed outline edges to illustrate their position on the protective helmet.

The two coupling parts 3 of the helmet allow repeated disassembly and assembly of the chin part 2 with the Jethelmteil 1. For disassembly unlocks and opens a user, the coupling part 3 and pulls the chin part 2 in a decoupling 8 from the Jethelmteil 1 from. For assembly, the chin part 2 is pushed in a coupling direction 9 on the Jethelmteil 1, wherein the coupling part 3 closes automatically and either locked automatically or must be locked by the user. The disassembled from Jethelmteil 1 state of the chin part 2, Figure 2, wherein the chin part 2 after unlocking and opening of the coupling part 3 by the user in

Uncoupling 8 was deducted. In this case, it is not absolutely necessary for the chin part 2 to be pulled off the open face part 1 in the folded-up upper open-face helmet position. In principle, the chin part 2 can also be withdrawn from the full-face helmet part 1 in the full-face helmet position shown in FIG. 1, or in any intermediate position between full-face helmet position and full-face helmet position.

Each coupling part 3 consists of a first coupling element 10, which on

Jethelmteil 1 is fixed, and a second coupling element 11, which is fixed to the chin part 2. The structural design and the functions of the Kopplungstei ls 3 are explained below with reference to Figures 3 to 8, wherein like reference numerals in Figures 1 to 7 denote the same items.

According to FIG. 3, the coupling element 10 consists essentially of a flat plate-shaped section or a wall 1 with a pentagonal outline. The wall 14 is composed of a rectangular section 141 and a triangular section or a swept wall 16 adjoining a narrow side 142 of the section 141. At the long-side edges 143 of the rectangular portion 141 and at the free wheels 144 of the swept wall 16, the coupling element 10 is flanged in a C-shape and thus forms a pocket 12. In a sectional view orthogonal to

Coupling direction 9 thus also has the pocket 12 has a C-shaped cross-section. It is open on the narrow side 145 and framed by its edges 143, 144 a lying in a plane parallel to the wall 14 opening 146th

On the side 145 of the wall 14 and thus at the entrance of the pocket 12 is an in

Coupling direction 9 seen open-edge L-shaped notch 27 introduced. It is composed of a leg 27a extending in the coupling direction 9 and a leg 27c extending at right angles thereto and thus transversely to the coupling direction 9. The leg 27c is surrounded by vertical abutment surfaces 27b, 27d and a horizontal abutment surface 27e.

In the lower region of the coupling element 10 is still an opening 29 for receiving a chin strap (not shown) available. According to FIG. 4, the coupling element 11 also essentially consists of a flat plate-shaped section or a wall 15 with a pentagonal outline. The wall 15 is also composed of a rectangular section 151 with longitudinal edges 36 and a triangular section or a triangular-shaped tip 35. At the opposite edge of the tip 35, the coupling element 11 has a U-shaped envelope or a tab 17 with a transverse leg or a middle wall 171 and a free leg 172. The leg 172 includes with the wall 15 a longitudinally open shaft 13 a.

The coupling element 11 carries on its free leg 172 opposite side of the wall 15, a coupling gear 20 to which the chin part 2 is attached. The

Coupling element 11 thus serves both the coupling and the pivoting of the chin part 2 to the or opposite the Jethelmteil 1. The coupling gear 20 is as

Four-joint with two pivotally mounted gear levers 18, 19 formed. The gear lever 19 is received in a recess 26 in the wall 15. The respective ends of the transmission levers 18, 19 are connected to transmission shafts 21, 22, 23, 24. The transmission shafts 21, 24 form pivot points of the pivotable gear lever 18, 19 with respect to the coupling element 11. The gear shafts 22, 23 are connected to the chin part 2, not shown. The gear lever 18 can be pivoted by almost 180 °, the other gear lever 19 kan n to pivot with the upper end 23 of the transmission shaft by a maximum angle α of about 30 ° about the center of the lower end 24 of the transmission shaft within the recess 26. As a result, the chin part 2 connected thereto receives a path or movement curve deviating from a circular path, as described in more detail in EP 0 797 935.

On the middle wall 171, a handle 28 is attached. It is designed as a U-shaped carriage which engages around the likewise U-shaped tab 17 and is vertically displaceable on her vertical down against a spring, not shown. A concealed in Figure 4 horizontal pin 281 inside the handle 28 connects the free legs and thus passes through the wall 151, the shaft 13 and the free leg 172nd

When inserting the coupling element 11 in the coupling direction 9 in the

Coupling element 10, the wall 15 of the coupling member 11 slides into the pocket 12 of the coupling element 10. At the same time, the U-shaped lug 17 of the coupling member 11 surrounds the wall 14 of the coupling element 10 in the region of their

Narrow side 145, which enters the shaft 13. The edges 144 of the swept in the direction of coupling 9 wall 16 of the coupling element 10 act as a stop for the Coupling element 11 in the coupling direction 9, to which the also swept tip 35 conforms identical shape in the completely completed coupling position. Now the bag 12 encloses the wall 15 of the coupling element 11 apart from the

Decoupling 8 form fit in all other directions. The long-side edges 143 are used during the coupling or decoupling process, ie in coupling 9 or decoupling 8 as a linear guide the wall 15 of the coupling element eleventh

At the same time, the horizontal pin of the handle 28, which the user has pulled down against the spring force, is inserted into the L-shaped notch 27. With the

Dipping the tip 35 in the edges 144 and the abutment of the edge 145 on the inside of the central wall 171, the bolt 281 abuts against the stop surface 27b. Now the user releases the handle 28 so that the spring force drives the handle 28 and thus the pin 281 upwards, into the leg 27c until it abuts against the stop face 27e. For a complete and no longer unintentionally releasable coupling of the coupling elements 10, 11 is achieved. The spring force holds the bolt 281 in this position within the notch 27, so that he and the handle 28 is not moved unintentionally downward and thus the bolt 281 is extended from the leg 27c of the notch 27. The spring force rather ensures that the

Coupling element 11 not without conscious intervention of the user in the

Decoupling direction relative to the Kopplungsele element 10 can be moved.

If the coupling element 11 according to FIG. 4 is completely inserted into the coupling element 10 according to FIG. 3 in the coupling direction 9, then the completely completed coupling position of the two coupling elements 10, 11 according to FIG. 5 arises. FIG. 5 schematically shows the coupling elements 10, 11 with respect to FIGS. 4 simplified dar.

The coupling part 3 is in the direction of its transverse axis 41 as low as possible, in the direction of its vertical axis 40 and its longitudinal axis 42 and thus in the decoupling direction 8 and in the coupling direction 9, however, the requirements of its stability correspondingly larger. The coupling part 3 is thus formed as flat as possible in order not to unnecessarily broaden the protective helmet in his ear area in which the coupling part 3 is arranged.

The coupling element 10 is assigned to the Jethelmteil 1. It is attached thereto with its wall 15 opposite side of the wall 14. In the coupled state, therefore, the U-shaped tab 17 with its free leg 172 does not only surround the edge 145, but for stabilization purposes also a (not shown) wall of the Jethelmteils first

The coupling element 11, however, is associated with the chin part 2. It carries on its side facing away from the wall 14 of the wall 15, the coupling gear 20 shown in more detail in Figure 4, which extends through the opening 146 and connects to the chin part 2.

6 shows the coupling element 10 of the coupling part 3 in a section of the line Vl-Vl in Figure 3. In contrast, the coupling element 10 is attached to the Jethelmteil 1, for which purpose it is embedded in a flat cup-shaped recess 1a in the ear area of the Jethelmteils 1. On the side of the wall 14, which an outside 32 of the

Jethelmteils 1 faces, holding pins 30 are mounted, which are passed through through holes 31 through the upper of the Jethelmteils 1 and fixed on an inner side 33 of the Jethelmteils 1 by welding.

At the lower edge 143 of the coupling element 10 towards the outside, a so-called cheek gripper 34 for positive engagement with a cheek portion 1 b of the Jethelmteils 1 is attached.

FIG. 7 shows schematically simplified the coupling part 3 of FIG. 5 in a lateral sectional view. The coupling element 10 can therefore be equipped with a certain conicity of its longitudinal edges 36 and in a direction converging towards the tip 35. The longitudinal edges 143 of the coupling element 11 may also have a corresponding conical shape. The taper leads to the fact that the coupling element 11 can be easily inserted into the pocket 12 of the coupling element 10 without tilting. The conicity may additionally cause a certain clamping effect, which provides for an additional coupling force between the coupling elements 10, 11.

FIG. 8 shows a horizontal partial sectional view through the arrow-shaped wall 16 or through the tip 35. The latter is chamfered on one side so that a contact surface 38 is created which cooperates with a correspondingly inclined contact surface 39 in the edge 144 of the wall 16. The conicity of the contact surfaces 38, 39 of the coupling elements 10, 11 extends transversely to the conicity according to Figure 7, so that thereby an insertion of the coupling element 11 is facilitated in the coupling element 10 and both kla pperfrei gegeneina countries held. It is finally pointed out once again that the invention shown in the figures is only an exemplary embodiment which can be modified in many respects. In addition, the use of indefinite articles "on", "an" does not exclude that the characteristics in question may also be present several or more times. Likewise, the term "entity" does not exclude that as well

Subunits can exist.

LIST OF REFERENCE NUMBERS

1 jet helmet part

1 a dent

1 b cheek area

2 chin part

3 coupling part

4 swivel directions

5 visor

6 folding directions

8 decoupling direction

9 coupling direction

10 coupling element

11 coupling element

12 bag

13 shaft

14 wall

15 wall

16 arrow-shaped wall

17 tab

18 gear lever

19 gear lever

20 coupling gear

21 gear shaft

22 gear shaft

23 gear shaft

24 gear shaft

26 recess

27 notch 27a thighs

27b stop surface 27c leg 27d stop surface 27e stop surface

28 handle

29 Breakthrough

30 retaining pins Through holes r outside

inside

Cheek-gripping tip

longitudinal edge

conical surface conical surface vertical axis

transverse axis

longitudinal axis

1 rectangular section narrow side

3 long-side edge free edge

5 narrow side

6 opening

1 middle wall2 free leg1 bolt

Claims

claims

1. Protective helmet, especially motorcycle home, with a Jethelmteil (1) and a chin part (2) which via a coupling part (3) releasably connected to each other and via a multi-link coupling mechanism (20) formed articulated connection (20) relative to each other in Verschwenkrichtungen ( 4) are pivotable.

2. Protective helmet according to claim 1, wherein the multi-link coupling gear (20) a

Four-bar linkage (20) is.

3. A protective helmet according to claim 1 or 2, wherein the coupling part (3) a first

Coupling element (10) which is connected to the Jethelmteil (1), and a second coupling element (11) which is connected to the chin part (2), which are positively coupled via cooperating coupling members.

4. Protective helmet according to claim 3, wherein the multi-link coupling mechanism (20) is located on a coupling element (11) of the coupling part (3).

5. Protective helmet according to claim 1 to 3, wherein the coupling gear (20) is formed divisible into at least two coupling gear parts, which in each case on different

Coupling elements (10, 11) are arranged.

6. Protective helmet according to one of claims 1 to 5, wherein the coupling elements (10, 11) of the coupling part (3) are each disc-shaped.

7. Protective helmet according to one of claims 1 to 6, wherein one of the coupling elements (11) has a wall (15) and another of the coupling elements (10) one at least in

Coupling direction (9) open pocket (12), wherein the pocket (12) of the one coupling element (10) for receiving the wall (15) of the other coupling element (11) is used.

8. Protective helmet according to claim 7, wherein the wall (15) has a U-shaped tab (17) which projects transversely to the coupling direction (9) from the wall (15) and in turn engages around a part of the pocket (12) in the coupling state.

9. A protective helmet according to any one of claims 1 to 8, wherein mutually cooperating coupling surfaces (36, 37, 38, 39) of the coupling elements (10, 11) are designed conical so that they to a centering of the coupling elements (10, 11) in one or both to the coupling direction (9) vertical spatial directions.

10. Protective helmet according to one of claims 1 to 9, wherein the coupling part (3) only in a defined position of the linkage (20) is operable and blocked in all other positions by the coupling gear (20).