Device, in particular visor mechanism, for moving a visor on a helmet and head protection system

Description

[0001] The invention relates to a device, in particular a visor mechanism, for displacing a visor on a helmet. Furthermore, the invention relates to a head protection system with such a device.

[0002] EP 3 366 153 A1 and CA 2 767 266 C disclose head protection systems comprising a helmet, a visor, and a device for moving the visor on the helmet. The visor of these head protection systems can be manually moved between a closed and an open position. A disadvantage is that moving the visor between the closed and open positions requires practice, since the movement of the visor relative to the helmet, as determined by the device, is not visible to the user, and the movement of both sides of the visor relative to the helmet must also be synchronized.

[0003] Sighting mechanisms are also known from DE 10 2016 116 999 A1, which discloses the preamble of claim 1, US 2011 / 0154551 A1, US 2003 / 0051289 A1 and US 5,177,816 A.

[0004] It is therefore an object of the invention to improve a device, in particular a visor mechanism, for displacing a visor on a helmet, in particular to improve the operability and thereby increase the reliability of the protective function of the head protection system.

[0005] This object is achieved by a device having the features of claim 1. It has been recognized that a device for displacing a visor on a helmet can have a guide means for the guided displacement of a visor connection means relative to a helmet connection means between a closed position, via a transfer position into an open position, wherein at least one pretensioning means pretensions the visor connection means arranged in the transfer position both in the direction of the closed position and in the direction of the open position. As a result, the displacement of the visor connection means between the closed position and the open position, in particular via the transfer position, can be carried out particularly reliably and comfortably. The pretensioning force acting on the visor connection means and the visor, preferably in every position of the movement path, provides the user with feedback about the movement path specified by the guide means.In addition, the at least one pre-tensioning means secures the visor connection means in the closed position and / or in the open position. Furthermore, the user is assisted when moving the visor connection means from the transfer position to the closed position and / or open position. This avoids a force-free dead center in which the visor could be accidentally positioned, but in which it is neither fixed nor adequately protects and / or uncovers the user's face. Because the displacement movement of the visor connection means relative to the helmet connection means is predetermined and pre-tensioned towards an end position at every point along the displacement path, the displacement of the visor connection means can be carried out particularly reliably, comfortably, and safely.

[0006] Preloading the visor connection means arranged in the transfer position toward the closed position and toward the open position means that the at least one preloading means exerts a force on the visor connection means in the transfer position that is oriented in the direction of movement from the transfer position to the closed position or to the open position, respectively. In other words, the visor connection means is preloaded relative to the helmet connection means in the two displacement directions that lead out of the transfer position.

[0007] The drive forces and / or drive moments produced by the at least one pretensioning means in the transfer position between the visor connection means and the helmet connection means are preferably non-collinear and / or non-parallel. The force vector and / or moment vector resulting in the transfer position between the visor connection means and the helmet connection means is preferably non-zero in the direction of the closed position and in the direction of the open position.

[0008] According to one aspect of the invention, the visor connection means can be displaceable between the closed position and the transfer position along a first movement path and / or between the transfer position and the open position along a second movement path. The guide means can be designed such that it limits the displaceability of the visor connection means relative to the helmet connection means to the first and / or the second movement path. The guide means is preferably designed such that a displacement of the visor connection means relative to the helmet connection means along the first and second movement paths is possible only in the transfer position.The respective movement path can determine a linear, in particular a straight-line, displacement and / or a rotational displacement, in particular limiting the displaceability of the visor connection means relative to the helmet connection means to exclusively such degrees of freedom of movement. The first movement path and the second movement path preferably form the movement path of the visor connection means between the closed position and the open position. The first movement path and the second movement path can be adjacent to one another in the transfer position.

[0009] Preferably, the movement path, in particular the first movement path and the second movement path, cannot be continuously differentiated in the transfer position. There is preferably a kink between the first movement path and the second movement path. Preferably, the smallest angle between the first movement path and the second movement path is a maximum of 135°, in particular a maximum of 120°, in particular a maximum of 100°, in particular a maximum of 90°, in particular a maximum of 60°, and / or at least 30°, in particular at least 60°, in particular at least 90°, in particular at least 100°.

[0010] According to one aspect of the invention, the sighting mechanism, in particular the guide means and / or the pretensioning means, is designed such that, in the transfer position, a displacement movement of the sighting connection means in the direction of the closed position, in particular along the first movement path, can be blocked, while at the same time a displacement movement of the sighting connection means in the direction of the open position, in particular in the direction of the second movement path, is enabled. Preferably, this applies equally in the opposite direction for a displacement movement of the sighting connection means in the direction of the closed position, in particular in the direction of the first movement path, when blocking the second movement path. The displacement from the transfer position into the closed position and / or into the open position is preferably effected, in particular completely, by the at least one pretensioning means.This advantageously ensures that the user can displace the visor connection means along the respective movement path into the transfer position, in particular against a pre-tensioning force caused by the at least one pre-tensioning means, from which the visor connection means is automatically displaced into the new position by the pre-tensioning means.

[0011] Preferably, the displacement of the visor connection means relative to the helmet connection means along the second movement path is enabled when the first movement path is completely blocked and / or enabled along the first movement path when the second movement path is completely blocked, in particular such that the enabled movement between the transfer position and the closed position and / or the open position can be fully executed. The displacement between the transfer position and the open position and / or the closed position is preferably completely effected by the at least one pretensioning means.Because the at least one pretensioning means is designed to pretension the sight connection means arranged in the transfer position in the direction of the closed position and in the direction of the open position, it can be achieved that in the transfer position no change in the force vector exerted, in particular by the user, on the sight connection means is required in order to move the sight connection means into the transfer position and from the transfer position into the closed position and / or open position, in particular opposite the transfer position.

[0012] According to one aspect of the invention, the sighting mechanism, in particular the guide means and / or the at least one pretensioning means, can be designed such that the sighting connection means locks from the transfer position into the open position and / or locks from the transfer position into the closed position.

[0013] According to a further aspect of the invention, the guide means is designed such that it has at least one end stop for limiting the displacement movement of the visor connection means relative to the helmet connection means along the first movement path and / or along the second movement path in the transfer position. Preferably, the guide means has at least one end stop for limiting the displacement movement of the visor connection means relative to the helmet connection means in the open position and / or in the closed position.

[0014] The visor connection means can be designed for permanent or reversibly detachable connection to the visor. The visor connection means can also be formed as a single piece, in particular integrally with the visor.

[0015] The helmet connection element can be permanently or reversibly connected to the helmet, in particular to a helmet shell. In particular, it can be firmly bonded to the helmet.

[0016] The terms "closed position," "open position," and "transfer position" refer equally to the arrangement of the device, the visor connection means relative to the helmet connection means, and the visor relative to the helmet. The fact that the visor is closed in the closed position and open in the open position can be deduced from the device connected to the helmet and visor, but possibly not from the device in its uninstalled state. The terms "closed position" and "open position" can be understood alternatively as a first position and a second position in connection with the device in its uninstalled state.

[0017] The device preferably has a cover which at least partially, in particular completely, covers the helmet connection means and / or the visor connection means and / or the guide means. The cover can preferably be attached to the helmet connection means, in particular in a reversibly detachable manner. The cover, together with the helmet connection means, can form a housing in which the visor connection means and / or the guide means and / or the at least one pretensioning means are at least partially, in particular completely, accommodated. This advantageously ensures that components of the device which are movable relative to one another are concealed, in particular protected from being accessed and / or from contamination.

[0018] The device can have at least one, in particular at least two, in particular at least three, in particular at least four of the pretensioning means. Preferably, the device has a maximum of four, in particular a maximum of two of the pretensioning means. The at least one pretensioning means can be designed as a tension spring and / or a compression spring and / or a torsion spring and / or a bending spring and / or as a rubber-elastic body. The at least one pretensioning means can comprise a metallic material, in particular a spring steel and / or a plastic, or a rubber-elastic material. The rubber-elastic material preferably has a modulus of elasticity in a range from 1 MPa to 200 MPa, in particular from 10 MPa to 100 MPa, and / or a Shore A hardness in a range from 10 to 100, in particular from 20 to 60. At least one pretensioning means is preferably located between the helmet connection means and the visor connection means.The at least one preloading means can exert a preload force and / or a preload moment on the visor connecting means.

[0019] Preferably, the guide means has at least one end stop for limiting the displaceability of the visor connection means relative to the helmet connection means, in particular in the closed position and / or in the open position. The pretensioning means can be designed to pretension the visor connection means into the open position and / or the closed position, in particular to the respective end stop. This allows the visor connection means to be reliably fixed in the open position and / or the closed position.

[0020] The guide means can have at least one guide resistance which is arranged between the closed position and the open position and which requires a force to overcome. The guide resistance can be formed, for example, by an elastic element which acts between the visor connection means and the helmet connection means. Preferably, the guide resistance comprises at least one, in particular two elastic or rigid elements, in particular locking lugs, which interact with an elastic or rigid counterpart, in particular a locking web. The elastic means can be arranged on the helmet connection means and the counterpart can be arranged on the visor connection means, or vice versa. Particularly preferably, the guide resistance is arranged adjacent to the transfer position along the displacement path of the visor connection means, in particular on the side of the closed position.This advantageously allows the user to detect a specific position along the shift path, particularly the transfer position. This allows the visor to be shifted particularly reliably and conveniently.

[0021] Preferably, the guide means is designed such that the visor connection means is moved at least partially, in particular exclusively, linearly between the closed position and the transfer position. This linear movement is preferably oriented such that the visor is displaced from the closed position to the transfer position along a forward viewing direction of the user, in particular in front of the helmet. The guide means can be designed such that the visor connection means is moved upward, in particular linearly and / or pivoted, with respect to the user's viewing direction when displaced from the transfer position to the open position.

[0022] A device according to claim 2 is particularly economical to manufacture and reliable in operation. A single pretensioning means is understood to be a pretensioning means which has a single operating principle, for example is designed as a spiral spring or torsion spring or tension spring, and / or has a single functional section and / or is formed in one piece, in particular with a material fit. Preferably, the single pretensioning means causes the visor connection means arranged in the transfer position to be pretensioned both in the direction of the closed position and in the direction of the open position. For this purpose, the pretensioning means can be arranged, for example, eccentrically to a rotation axis about which the visor connection means can be pivoted from the transfer position. As a result, the pretensioning means can cause a drive torque from the transfer position between the visor connection means and the helmet connection means.The visor connection means can also be displaceable linearly relative to the helmet connection means, wherein the single preloading means also exerts a driving force between the visor connection means and the helmet connection means in the direction of this linear displacement movement. The single preloading means is preferably designed as a tension spring, in particular as a rubber-elastic spring, in particular as a rubber band and / or rubber ring. The number of components of the device is thus reduced, thereby reducing its assembly and manufacturing costs.

[0023] A device according to claim 3 ensures the displacement of the visor connecting means in a particularly reliable, comfortable and safe manner.

[0024] According to one aspect of the invention, a pretensioning force generated by the at least one pretensioning means and / or a pretensioning moment generated by the at least one pretensioning means can be maximum in the transfer position. Such a device can be displaced particularly reliably between the closed position and the open position, in particular from the transfer position. The pretensioning force and / or the pretensioning moment are to be understood as the force and / or moment generated by the at least one pretensioning means and / or the force applied to the at least one pretensioning means. Because the pretensioning force and / or the pretensioning moment are maximum in the transfer position, an unintentional retention of the visor connection means in the transfer position is reliably prevented.

[0025] A device according to claim 4 ensures the displacement of the visor on the helmet in a particularly reliable manner. The driving force and / or the driving torque are understood to mean the force and / or the torque exerted by the at least one pretensioning means between the visor connection means and the helmet connection means. The pretensioning force and / or the pretensioning torque, in particular their magnitude and orientation, and / or their force application points, in particular with respect to the visor connection means and / or the helmet connection means and / or the guide means, influence the exerted driving force and / or the driving torque. Preferably, the driving torque and the driving force are exerted by the at least one pretensioning means in the transfer position, in particular in every position between the closed position and the open position, on the visor connection means. For this purpose, the device can have a single pretensioning means.For example, the preload moment can cause the sight connection means to move from the transfer position to the open position and the preload force can cause the sight connection means to move from the transfer position to the closed position or vice versa.

[0026] A device according to claim 5 is particularly flexibly adjustable with regard to supporting the displacement movement of the visor on the helmet. The forces and / or torques caused by the first and second pretensioning means are preferably not collinear. For example, the two pretensioning means can be designed as two linear springs oriented obliquely to one another, in particular as tension springs and / or as two torsion springs arranged eccentrically to one another and / or as a torsion spring and a linear spring. The first and second pretensioning means can be formed as one piece, in particular by being integrally connected to one another. In this case, the respective pretensioning means forms an independent functional section of a combination spring.

[0027] A device according to claim 6 ensures the displacement of the visor on the helmet in a particularly comfortable and reliable manner. The kink in the movement path can be formed by a kink in a guide and / or by the movement path following a pivoting movement from the transfer position to the open position and a linear movement to the closed position, or vice versa. By forming the kink in the movement path, the pretensioning of the visor connection means in the transfer position is reliably ensured both in the direction of the open position and in the direction of the closed position.

[0028] A device according to claim 7 is particularly robust in operation and economical to manufacture. The slotted guide preferably comprises at least one, in particular at least two, in particular a maximum of three, in particular exactly two, slots. The at least one slotted guide can have a guide element, in particular a guide groove and / or a guide slot and / or a guide frame and / or a guide rail. The at least one slotted guide preferably has a guide body, in particular a sliding block. The guide element can be designed for straight-line and / or curved, in particular circular-arc, guidance of the guide body. Preferably, the guide element and the guide body are formed as one piece, in particular with a material fit, each with one of the two components formed by the helmet connection means and the visor connection means.For example, the helmet connection means and / or visor connection means and the respective component of the guide rail can be manufactured using an injection molding process. The guide rail, in particular at least one guide rail, can be designed as a linear guide.

[0029] A device according to claim 8 is particularly robust in operation and comfortable to use. The guide means can comprise exclusively joints for the guided displacement of the visor connection means relative to the helmet connection means. The guide means preferably comprises at least one, in particular at least two, and / or a maximum of four, in particular a maximum of three, in particular a maximum of two, preferably exactly two, joints. The joints ensure particularly low-friction displacement and are particularly robust against contamination.

[0030] Preferably, the visor connection means is attached to the helmet connection by means of a coupling element. The coupling element can be attached to the helmet connection means via a first joint. The visor connection means can be attached to the coupling element via a second joint. Preferably, the axes of rotation of these two joints are oriented parallel to each other and / or positioned at a distance from each other. The distance between the axes of rotation of these joints is preferably in a range of 3 mm to 15 mm, in particular 5 mm to 10 mm.

[0031] A device according to claim 9 ensures the displacement of the visor on the helmet in a particularly user-friendly manner. By displacing the visor connection means between the closed position and the transfer position with the essentially linear displacement movement, the visor can initially be moved away from the user's head and away from the front of the helmet. A gap between the helmet and the visor can thus be avoided. The visor can rest as tightly as possible on the user's nose. Accordingly, the freedom of movement required to displace the visor from the closed position does not need to be maintained. The angle by which the visor connection means is pivoted relative to the helmet connection means when displacing between the closed position and the transfer position is preferably in a range of 0° to 10°, in particular in a range of 2° to 10°.

[0032] A device according to claim 10 ensures the displacement of the visor on the helmet in a particularly convenient manner. The displacement of the visor connection means between the closed position and the transfer position preferably occurs purely linearly, in particular in a straight line. The visor can thus be displaced in front of the helmet, i.e., into the transfer position, via the shortest possible path, and from this position can be guided over the helmet, i.e., into the open position.

[0033] A device according to claim 11 is particularly convenient to handle. Preferably, the guide means is designed to displace the visor connection means relative to the helmet connection means between the transfer position and the open position exclusively in a rotational manner, in particular in a circular arc. Preferably, at the transfer position, the displacement movement transitions from a translational movement, in particular a purely translational movement, to a rotational movement, in particular a purely rotational movement.

[0034] A device according to claim 12 ensures particularly high operating comfort. The angle through which the visor connection means can be pivoted relative to the helmet connection is preferably in a range from 15° to 180°, in particular from 20° to 90°, in particular from 30° to 60°, in particular from 40° to 50° and / or is a maximum of 180°. The guide means is preferably designed such that the visor is displaced relative to the helmet between the transfer position and the open position in the vertical direction by a distance in a range from 10 mm to 60 mm, in particular from 25 mm to 50 mm. The displacement in the vertical direction can also be effected at least partially by a translational movement component of the visor relative to the helmet.

[0035] A device according to claim 13 is particularly convenient to operate. The handle can be attached to the visor connection means and / or the coupling element. The handle can be attached to the helmet connection means so that it can be displaced translationally and / or rotationally. Preferably, the handle is attached to a cover, in particular formed integrally therewith. The handle and / or the guide means are preferably designed such that, by actuating the handle, the visor connection means can be displaced relative to the helmet connection means between the closed position and the transfer position and / or between the open position and the transfer position. This advantageously achieves that the visor itself does not have to be grasped to move the visor on the helmet, thus preventing any impairment of vision due to dirt.

[0036] A device according to claim 14 is particularly convenient to operate. Because the handle is movably mounted relative to the visor connection means, a force conversion is enabled between the movement of the handle and the movement of the visor connection means relative to the helmet connection means. This allows the displacement of the visor connection means relative to the helmet connection means to be particularly smooth and controlled. Preferably, the handle is connected, in particular rigidly, to a coupling element acting between the helmet connection means and the visor connection means.

[0037] A further object of the invention is to improve a head protection system, in particular to improve its usability and to ensure a particularly high level of safety during operation.

[0038] This object is achieved by a head protection system having the features of claim 15. The advantages of the head protection system correspond to the advantages of the device described above. In particular, the head protection system can be further developed with at least one of the features described above in connection with the device. The head protection system preferably has exactly two of the devices. One of the devices is preferably arranged on each side of the helmet and / or the visor. At least one, in particular all, axes of rotation of the devices are preferably arranged concentrically with one another.

[0039] In the closed position, the visor is preferably arranged flush with the helmet, in particular a helmet shell. In the open position, the visor is preferably arranged above its arrangement in the closed position and / or above an outer surface of the helmet, in particular the helmet shell.

[0040] Further features, details, and advantages of the invention will become apparent from the following description of several exemplary embodiments. They show: Fig. 1 a side view of a head protection system with a helmet, a visor and a device for displacing the visor on the helmet, wherein the device is arranged in a closed position and wherein a guide means of the device is covered by a cover, Fig. 2 a side view of the head protection system in Fig. 1 , wherein the cover is removed from the device, so that it can be seen that the guide means has a slotted guide for displacing the visor relative to the helmet, Fig. 3 a side view of the head protection system in Fig. 1 , wherein the device is arranged in a transfer position, between the closed position and an open position, Fig. 4 a side view of the head protection system in Fig. 1 , wherein the device is arranged in the open position, Fig. 5 a schematic representation of the energetic potential of driving forces and / or driving moments along a movement path of the visor relative to the helmet, which are caused by at least one pretensioning means of the device between a helmet connection means and a visor connection means of the device, Fig. 6 a side view of a head protection system according to a further embodiment, wherein the device is arranged in the closed position and wherein the guide means has two joints for rotationally displacing the visor relative to the helmet about two parallel and eccentrically arranged axes of rotation, Fig. 7 a rear view of the device in Fig. 6 , Fig. 8 an exploded view of the device in Fig. 6 , Fig. 9a side view of the head protection system in Fig. 6 , wherein the device is arranged in the transfer position, Fig. 10 a rear view of the device in Fig. 9 , Fig. 11a side view of the head protection system in Fig. 6 , wherein the device is arranged in the open position, Fig. 12 a rear view of the device in Fig. 11 , Fig. 13 a side view of a device for displacing a visor on a helmet according to a further embodiment, wherein the device is arranged in the closed position and wherein the guide means has a slotted guide for displacing the visor relative to the helmet and, Fig. 14 a side view of the device in Fig. 13 , wherein the device is arranged in the transfer position, and Fig. 15 a side view of the device in Fig. 13 , wherein the device is arranged in the open position.

[0041] Based on the Fig. 1 bis Fig. 5 A head protection system 1 according to a first embodiment is described. The head protection system 1 comprises a helmet 2 for protecting the head and a visor 3 for protecting the face, in particular the eyes. The visor 3 is displaceably attached to the helmet by means of two devices 4. The two devices 4 are arranged symmetrically on the helmet 2, in particular symmetrically to a vertical plane oriented parallel to the user's line of sight, preferably on both sides.

[0042] The helmet 2 comprises a helmet shell 5, a shock absorber (not shown) and a chin strap (not shown).

[0043] The visor 3 has a viewing glass 6 extending continuously over both eyes. The viewing glass 6 is held in a visor frame 7. In the closed position, in which the visor 3 is closed, the outer contour of the visor 3 is arranged flush with the outer contour of the helmet 2, in particular the helmet shell 5.

[0044] The two devices 4 each have a helmet connection means 8, a visor connection means 9, a guide means 10, and a single preloading means 11. The helmet connection means 8 is firmly, in particular permanently, connected to the helmet 2, in particular to the helmet shell 5. The visor connection means 9 is firmly, in particular permanently, connected to the visor frame 7. A cover 12 of the device 4 covers the helmet connection means 8 and the visor connection means 9 at least partially and the guide means 10 completely.

[0045] The guide means 10, which is in the Fig. 2 bis Fig. 4 is shown in further detail, is designed for the guided displacement of the visor connection means 9 relative to the helmet connection means 8. The guide means 10 comprises a slotted guide with a first guide slot 13 and a second guide slot 14. The two guide slots 13, 14 each have a guide element 15, 16 and a guide body 17, 18 displaceably mounted therein or thereon. The first guide element 15 is designed as a rectilinear guide slot, in particular in the form of an elongated hole, in the helmet connection means 8. The first guide body 17 is designed as a bolt, in particular as a pin, on the visor connection means 9. The second guide element 16 is designed as a guide frame with a linear and a circular sector-shaped section on the helmet connection means 8. The second guide body 18 is designed as a bar-shaped section of the visor connection means 9, to which the first guide body 17 is also attached.

[0046] The guide means 10, in particular the two guide slots 13, 14, are designed such that the visor connection means 9 can be displaced linearly relative to the helmet connection means 8 between the closed position and a transfer position. Furthermore, the guide means 10, in particular the guide slots 13, 14, are designed such that the visor connection means 9 is rotatably mounted relative to the helmet connection means 8 between the transfer position and an open position in which the visor 3 is open. The transfer position is arranged between the open position and the closed position. From the transfer position, the visor connection means 9 can be displaced relative to the helmet connection means 8 both linearly toward the closed position and rotationally toward the open position.

[0047] Between the closed position and the transfer position, the visor connection means 9 is displaceable relative to the helmet connection means 8 along a viewing direction of the user by a guide length d in a range from 5 mm to 30 mm, in particular from 15 mm to 25 mm. Between the transfer position and the open position, the visor connection means 9 is pivotable relative to the helmet connection means 8 by a guide angle α in a range from 25° to 90°, in particular from 35° to 60°.

[0048] The guide means 10 has a guide resistance 19, which is designed, in particular, for the user to detect the transfer position by touch. The guide resistance 19 comprises two locking lugs 20, which are arranged on the helmet connection means 8, in particular on the second guide element 16, and are in particular elastically designed or mounted, and which interact with a locking web 21 formed on the visor connection means 9. The guide resistance 19 is designed such that a resistance force must be overcome to displace the visor connection means 9 relative to the helmet connection means 8 between the closed position and the transfer position, in particular directly adjacent to the transfer position. This indicates the transfer position in a tactile manner for the user.

[0049] To limit the displacement of the visor connection means 9 relative to the helmet connection means 8 in the closed position, the guide means 10 has a first end stop 22. To limit the displacement in the open position, the guide means 10 has a second end stop 23. Both end stops 22, 23 are formed by the second guide slot 14.

[0050] The single pretensioning means 11 is in the form of a tension spring made of a rubber-elastic material, in particular in the form of a rubber band. The pretensioning means 11 acts between the visor connection means 9 and the helmet connection means 8, in particular between two anchor elements 24, 25 arranged thereon. The pretensioning force F exerted by the pretensioning means 11 acts between the first anchor element 24 and the second anchor element 25.

[0051] Between the transfer position and the open position, the visor connection means 9 is pivotable relative to the helmet connection means 8 about a rotation axis 26. The rotation axis 26 is arranged concentrically to the first guide body 17, in particular the guide pin, and to the circular sector-shaped section of the second guide element 16. The prestressing force F acts eccentrically to the rotation axis 26 on the visor connection means 9. A distance b between the vector of the prestressing force F and the rotation axis 26 lies in a range from 2 mm to 20 mm, in particular this is 5 mm.

[0052] In the transfer position, the pretensioning force F causes a driving force FA between the helmet connection means 8 and the visor connection means 9, which pretensions the visor connection means 9 into the closed position, i.e., aims to transfer it into the closed position. The driving force FA has a force component oriented parallel to the movement path between the closed position and the transfer position. Furthermore, the pretensioning force F in the transfer position causes a driving torque MA between the helmet connection means 8 and the visor connection means 9, which pretensions the visor connection means 9 into the open position, i.e., aims to transfer it into the open position. The driving torque MA promotes a rotational movement from the transfer position into the open position. As a result, the visor connection means 9 arranged in the transfer position is pretensioned both in the direction of the closed position and in the direction of the open position.In the transfer position, the preload force F, in particular the drive force FA and the drive torque MA, are maximum.

[0053] The head protection system 1 and the device 4 function as follows: The head protection system 1 is attached to the user's head, and the visor 3 and the visor connection means 9 are in the closed position. The preloading means 11 is tensioned and generates the preload force F.

[0054] To move the visor 3 into the open position, the visor 3 can be grasped by hand at the visor frame 7 and moved forward, particularly in the direction of view of the user. In doing so, the visor connection means 9 is moved linearly in the direction of the transfer position against the driving force FA caused by the pretensioning means 11 between the helmet connection means 8 and the visor connection means 9. In doing so, the visor 3, in particular the visor connection means 9, is guided in a straight line on the guide means 10, in particular along the guide slots 13, 14, between the closed position and the transfer position. Before reaching the transfer position, the resistance force caused by the guide resistance 19 must be overcome. In doing so, the locking lugs 20 are elastically deformed until the locking web 21 can slide past the locking lugs 20. The visor 3, in particular the visor connection means 9, is in the transfer position.The driving force FK, which preloads the sight connection means 9 into the closed position, is maximum. In the transfer position, the driving force FK is preferably in a range of 5 N to 20 N.

[0055] In the transfer position, the guide means 10 enables a pivoting movement of the visor connection means 9 relative to the helmet connection means 8 about the rotation axis 26. The drive torque MA generated by the pretensioning means 11 between the helmet connection means 8 and the visor connection means 9 pretensions the visor connection means 9 into the open position. In the transfer position, the drive torque MA is at its maximum. Preferably, the drive torque MA in the transfer position is in a range from 0.01 Nm to 1 Nm, in particular from 0.05 Nm to 0.2 Nm.

[0056] The guide resistance 19 ensures that the position of the visor 3 in the transfer position can be reliably detected by the user, especially when operating with gloves. The fact that the visor connection means 9 is preloaded in the transfer position, particularly simultaneously, into both the closed position and the open position further improves operating comfort. In particular, the displacement of the visor connection means 9 between the closed position and the open position beyond the transfer position can be carried out particularly reliably and continuously.

[0057] In the Fig. 5 The energetic potential Φ is shown over the position x along the movement path of the visor connection means 9 relative to the helmet connection means 8 for the driving force FA and the driving torque MA. The closed position is indicated by the number I, the transfer position by the number II, and the open position by the number III.

[0058] In the closed and open positions, the visor connection means 9 rests against the end stops 22, 23, whereby the energetic potential Φ of both the driving force FA and the driving torque MA is zero there. Between the closed position and the transfer position, no rotational movement of the visor connection means 9 relative to the helmet connection means 8 in the direction of the driving torque MA can occur, whereby the associated energetic potential Φ remains zero. The same applies equally to the energetic potential due to the driving force FA between the transfer position and the open position.

[0059] Due to the tensioning of the preloading means 11 when the sight connection means 9 is moved from the closed position to the transfer position, the energetic potential Φ initially increases abruptly and then steadily increases until the transfer position is reached. Between the transfer position and the open position, the linear movement in the direction of the drive force FA is blocked. The maximum drive torque MA in the transfer position decreases steadily from the transfer position to the open position. The same applies to the energetic potential Φ due to the drive torque MA , whereby this energetic potential becomes zero in the open position due to the end stop 23.

[0060] From the Fig. 5 It can be seen that the pretensioning means 11 pretensions the sight connection means 9 arranged in the transfer position both in the direction of the open position and in the direction of the closed position.

[0061] Based on the Fig. 6 bis Fig. 12 A further exemplary embodiment of the head protection 1, in particular of the device 4, is described. In contrast to the exemplary embodiment described above, the visor 3 is formed as a single piece, in particular as a single piece. The visor 3 is reversibly detachably connected to the visor connection means 9. In particular, the visor connection means 9 is inserted directly into a recess in the visor 3. The device 4 has two pretensioning means 11a, 11b, which are designed as torsion springs, in particular made of spring steel. The pretensioning means 11a, 11b are designed as spiral springs. The guide means 10 is designed for the purely articulated connection of the visor connection means 9 to the helmet connection means 8. The guide means 10 therefore does not comprise a slotted guide.Furthermore, the device 4 has a handle 27 for moving the device 4, in particular the visor connection means 9, from the closed position to the transfer position, in particular to the open position. The handle 27 is formed as a single piece, in particular integrally with the cover 12.

[0062] The visor connection means 9 is connected to the helmet connection means 8 via a coupling element 28. The cover 12 with the handle 27 is rigidly connected to the coupling element 28 by means of a fastening bolt 29 and an axle bolt 30. The cover 12 and the coupling element 28 are mounted on the helmet connection means 8 via the axle bolt 30, rotatable about a first axis of rotation 26a. The annular visor connection means 9 is mounted on the coupling element 28, rotatable about a second axis of rotation 26b. The second axis of rotation 26b is oriented parallel to the first axis of rotation 26a. An axial distance c between the two axes of rotation 26a, 26b lies in a range from 3 mm to 15 mm, in particular this is 5 mm.

[0063] The guide means 10 comprises two joints 31a, 31b with the two rotation axes 26a, 26b and a guide unit 32. The guide unit 32 comprises a guide edge 33 and a guide body 34. The guide edge 33 is formed by the helmet connection means 8 and is designed to guide the guide body 34 on one side. The guide body 34 is integrally connected, in particular, with the visor connection means 9. End stops 22, 23 are formed at the two ends of the guide edge 33.

[0064] The first pretensioning means 11a effects a pretensioning moment M 1 and thus a corresponding drive torque MA,1 about the first axis of rotation 26a between the helmet connection means 8 and the visor connection means 9, in particular the coupling element 28. The second pretensioning means 11b effects a pretensioning moment M 2 and thus a corresponding drive torque MA,2 about the second axis of rotation 26b between the visor connection means 9 and the helmet connection means 8, in particular the coupling element 28. The first pretensioning moment M 1 and the second pretensioning moment M 2 are oriented such that the coupling element 28 is pretensioned into the closed position by both drive torques MA,1 , MA,2.

[0065] The operation of the head protection system 1 and the device 4 according to the embodiment described above is as follows: The visor 3 and the device 4, in particular the visor connection means 9, are initially in the closed position, in which the guide body 34 rests against the first end stop 22. The handle 27 extends from the second rotation axis 26b in the horizontal direction.

[0066] To move the visor connection means 9 into the transfer position, the user pivots the handle 27 downwards by hand, in particular into an approximately vertical orientation. As a result, the coupling element 28, which is rigidly connected to the handle 27, is pivoted about the first axis of rotation 26a against the preload force of the first preloading means 11a, in particular also of the second preloading means 11b. The visor connection means 9, which is articulated to the coupling element 28, is carried along by the coupling element 28. The guide body 34 attached to the visor connection means 9 is preloaded onto the guide edge 33 by the second preloading means 11b. The guide body 34 slides along the guide edge 33 into the transfer position.

[0067] In the transfer position, the first preloading means 11a generates the drive torque MA,1 , which preloads the sight connection means 9 into the closed position via the coupling element 28. Furthermore, the second preloading means 11b generates the drive torque MA,2 , which preloads the sight connection means 9 into the open position.

[0068] Because the handle 27 is still held by the user in the transfer position, the visor connection means 9 is prevented from returning to the closed position. The second pretensioning means 11b causes the visor connection means 9 to be moved into the open position. In the open position, the guide body 34 rests against the second end stop 23.

[0069] In the transfer position, the energetic potential Φ of a displacement movement into the closed position or into the open position is nonzero due to the two drive torques MA,1 , MA,2 . In the closed position and in the open position, the respective energetic potential is zero.

[0070] Based on the Fig. 13 bis Fig. 15 A further exemplary embodiment is described. In contrast to the first described embodiment, the pretensioning means 11 is not designed as a tension spring, but as a spiral spring. The single pretensioning means 11 is formed in one piece, in particular without any material separation, and comprises two functional sections 35a, 35b. The first functional section 35a, in the manner of a compression spring, exerts a pretensioning force F via two legs 36a, 36b and thereby a corresponding driving force FA between the helmet connection means 8 and the visor connection means 9 for displacing the visor connection means 9 into the closed position.

[0071] The second functional section 35b creates a preload torque M and thereby a corresponding drive torque MA between the helmet connection means 8 and the visor connection means 9 for preloading the visor connection means 9 into the open position. In the transfer position, the visor connection means 9 is preloaded by the preload means 11 into both the closed position and the open position.

[0072] Because the pre-tensioning means 11 is designed in one piece, but pre-tensions the previous connecting means 9 both in the closed position and in the open position and for this purpose exerts the pre-tensioning force F and the pre-tensioning moment M on the sight connecting means 9, the device 4 is structurally particularly simple in construction and can be manufactured economically.

[0073] The functioning of the head protection system 1 and the device 4 corresponds to the functioning of the head protection system 1 and the device 4 according to the embodiments described above.

[0074] What the above embodiments have in common, in particular, is that their guide means 10 ensures a movement path of the visor connection means 9 relative to the helmet connection means 8, which has a bend 37 in the transfer position. In particular, this ensures that the visor connection means 9 can be pretensioned in the transfer position both in the direction of the closed position and in the direction of the open position.

[0075] The head protection system 1 and the device 4 advantageously ensure that the visor 3 or the respective visor connection means 9 can be moved particularly reliably, continuously, and comfortably between the closed position and the open position relative to the helmet 2 or the helmet connection means 8. The guide means 10 and the pretensioning means 11 are also particularly simple in construction, which allows the device 4 and the head protection system 1 to be manufactured particularly economically.

Claims

1. Device (4), in particular a visor mechanism, for displacing a visor (3) on a helmet (2), having 1.

1. a helmet connection means (8) for connecting the device (4) to the helmet (2), 1.

2. a visor connection means (9) for connecting the device (4) to the visor (3), and 1.

3. a guidance means (10) for the guided displacement of the visor connection means (9) relative to the helmet connection means (8) between 1.3.

1. a closed position in which the visor (3) is closed, 1.3.

2. an open position in which the visor (3) is open, 1.3.

3. a transfer position between the closed position and the open position, characterised by 1.

4. at least one biasing means (11, 11a, 11b) for biasing the visor connection means (9) arranged in the transfer position in the direction of the closed position and in the direction of the open position.

2. Device according to claim 1, characterised by a single biasing means (11).

3. Device (4) according to claim 1 or 2, characterised in that a resulting force vector and / or moment vector between the visor connection means (9) and the helmet connection means (8) in the direction of the closed position and in the direction of the open position, which is effected by the at least one biasing means (11, 11a, 11b) in the transfer position, is not equal to zero.

4. Device (4) according to one of the preceding claims, characterised in that in the transfer position, the at least one biasing means (11, 11a, 11b) produces a driving force (FA) and a driving torque (MA) between the helmet connection means (8) and the visor connection means (9).

5. Device (4) according to one of the preceding claims, characterised in that in the transfer position, a first biasing means (11a) produces a first driving force (FA) and / or a first driving torque (MA, MA,1) between the helmet connection means (8) and the visor connection means (9) in the direct of the closed position and a second biasing means (11b) produces a second driving force (FA) and / or a second driving torque (MA,2) between the helmet connection means (8) and the visor connection means (9) in the direction of the open position.

6. Device (4) according to one of the preceding claims, characterised by a movement path of the visor connection means (9) relative to the helmet connection means (8) in the transfer position having a kink (37).

7. Device (4) according to one of the preceding claims, characterised in that the guidance means (10) has at least one slide guide (13, 14) for the guided displacement of the visor connection means (9) relative to the helmet connection means (8).

8. Device (4) according to one of the preceding claims, characterised in that the guidance means (10) has at least one joint (31a, 31b) for the guided displacement of the visor connection means (9) relative to the helmet connection means (8).

9. Device (4) according to one of the preceding claims, characterised in that the guidance means (10) is designed in such a way that the visor connection means (9) is pivoted by an angle (α) of no more than 5° relative to the helmet connection means (8) when displaced between the closed position and the transfer position.

10. Device (4) according to one of the preceding claims, characterised in that the guidance means (10) is designed for purely translatory, straight-line displacement of the visor connection means (9) relative to the helmet connection means (8) between the closed position and the transfer position.

11. Device (4) according to one of the preceding claims, characterised in that the guidance means (10) is designed for pivoting the visor connection means (9) relative to the helmet connection means (8) between the closed position and the transfer position.

12. Device (4) according to one of the preceding claims, characterised in that the guidance means (10) is designed for pivoting the visor connection means (9) relative to the helmet connection means (8) between the transfer position and the open position by an angle (α) of at least 15°.

13. Device (4) according to one of the preceding claims, characterised by a handle (27) for displacing the visor (3) between the closed position and the open position.

14. Device (4) according to claim 13, characterised in that the handle (27) is mounted so as to be moveable relative to the visor connection means (9).

15. Head protection system (1), having 15.

1. a helmet (2) and / or a visor (3), and 15.

2. at least one device (4) according to one of claims 1 to 14, which is connected to the helmet (2) by means of the helmet connection means (8) and / or connected to the visor (3) by means of the visor connection means (9).