Swivel mechanism for a helmet's protective visor

Abstract

A pivoting arrangement for a helmet's protective visor, wherein a helmet body (1) is provided on both sides with at least one locking slot (11) into which a connecting seat (2) is movably inserted, wherein the connecting seat (2) has two connecting pins (21) on which a first connecting arm (3) and a second connecting arm (4) are pivotably mounted, and wherein a first engagement projection (31) and a second engagement projection (41) are arranged at one end of the first connecting arm (3) and the second connecting arm (4), and wherein the first engagement projection (31) and the second engagement projection (41) are rotatably connected to a protective visor (5), and wherein the first connecting arm (3) is provided on its inner side at the point in contact with the connecting pin (21) with a running groove (6) in which a spring detent (22) of the connecting seat (2) moves, and wherein the running groove (6) forms a first track (61),a second track (62) adjacent to the first track (61) and a guide wall (63) located between the first and second tracks (61, 62), wherein the first track (61) and the second track (62) overlap each other at their ends, such that the second track (62) is lower than the first track (61), and wherein one end of the guide wall (63) extends into the first track (61) so that the first track (61) forms a curve turning section (611), and wherein a concave curve groove (631) is formed at an end of the guide wall (63) corresponding to the curve turning section (611), and wherein an inclined section (612) extends from the end of the curve turning section (611) into the second track (62), and wherein a support wall (64) is arranged on the outside of the first rail (61), extending towards the first track (61) and into the outside of the second track (62). transitionsand wherein a stop projection (641) embedded in the first track (61) is arranged at a location on the support wall (64) corresponding to the concave arc groove (631), which is used to press the spring detent (22) into the concave arc groove (631).

Description

[Technical field]

[0001] The invention relates to a pivoting assembly for a protective screen of a helmet, in particular to an assembly for a helmet provided with the protective screen, wherein reliable operations for lifting and closing the protective screen are ensured by the protective screen moving along a track groove. [State of the art]

[0002] There are many types of helmets, such as car helmets, construction helmets, etc., to ensure head safety. To protect the user's eyes and face, a protective shield is attached to both sides of the helmet so that it can securely cover the human head, eyes, and face. The protective shield can be pivoted up and down. If the protective shield is pivoted all the way to the top of the helmet, it will protrude excessively above the top of the helmet. Since the conventional protective shield and the helmet are both connected by a single pivot point, the protective shield is opened by rotating the protective shield with the pivot point as the origin and the elongated distance of the protective shield as the radius. However, this may lead to the problem of insufficient safety because the protective shield is subject to excessive resistance caused by the wind when riding a motorcycle.

[0003] EP 0 668 029 A1 discloses a protective helmet with a visor. The side walls of the helmet are provided on the inside with two facing sliders that can accommodate two plates by sliding from bottom to top. The helmet and the plates are equipped with cooperating means to lock the plates in a predetermined operating position, so that this locking occurs automatically when the plates reach the operating position and can be unlocked by manual intervention of the operator. When the visor is in the raised position, a line is located to the left of the pivot point, while in the lowered position this line is located to the right of the pivot point. Transitioning from one position to the other requires stretching the spring, so the spring holds the visor in the high or low position. To lower the visor from the high position, it is sufficient to pull the visor slightly downward.To raise the visor, push it slightly upwards.

[0004] US 2009 / 313745 A1 discloses a face shield for a protective helmet that can be rotated up and down by a predetermined angle while the face shield is connected to the protective helmet. The face shield can be securely fastened in its upwardly rotated position with low wind resistance and negligible weight deflection, while simultaneously eliminating the risk of inadvertent lowering due to its weight. The face shield comprises a body for protecting the wearer's face, a pair of coupling units for fixed coupling with coupling pieces, each provided on opposite sides of the protective helmet, and a plurality of upper link pieces and lower link pieces for connecting the coupling units to opposite rear ends of the body to restrict rotation of the body.

[0005] JP 2003-82518 A discloses a helmet with a face shield. The face shield is attached to the helmet shell so that it can be freely opened and closed. The face shield can be freely opened and closed on the helmet body via a support shaft provided on both sides and can be held in a suitable position by a holding mechanism on one side of the helmet shell. A ratchet mechanism is provided as the holding mechanism. In another embodiment, two closing support mechanisms comprising a four-node rotary connection mechanism can be provided instead of the support shafts. A guide rail and a sliding member can be provided instead of the holding mechanism. The arcuate guide rail is located on the outer surface at the front of the shell body along the moving direction of the face shield, is formed integrally with the shell body portion, and has a stopper.The sliding element is located in a central section on the upper edge of the face shield and is guided by the guide rail. An engagement pin is attached to the sliding element and is pressed against one side of the guide rail by the spring. Holes are provided at several points there, into which the engagement pin engages, preventing the face shield from easy displacement. [Task of the invention]

[0006] The invention is based on the object of providing a pivoting arrangement for a protective screen of a helmet, in particular an arrangement for a helmet provided with the protective screen, wherein reliable lifting and closing operations are ensured by the protective screen moving along a track groove. [Technical solution]

[0007] This object is achieved according to the invention by a pivoting arrangement for a protective screen of a helmet, which has the features specified in claim 1. Further advantageous developments of the invention emerge from the subclaims.

[0008] According to the invention, a pivoting assembly for a protective visor of a helmet is provided, wherein a helmet body is provided on each side with at least one locking slot into which a connecting seat is inserted. The connecting seat is pivotally connected to a first connecting arm and a second connecting arm. The two connecting arms are pivotally connected to a protective visor on the other side. On the inside of the first connecting arm, a running groove is formed, into which a corresponding spring catch of the connecting seat engages. The spring catch moves in the running groove. In this way, the protective visor can be raised and closed more reliably, ensuring a step-like operation. [Brief description of the drawings]

[0009] The invention and its embodiments are explained in more detail below with reference to the drawings. The drawings show: Fig. 1 is an exploded perspective view of an embodiment according to the invention; Fig. 2 a perspective view of a first connecting arm according to the invention; Fig. 3 a schematic representation of the first connecting arm according to the invention; Fig. 4 is an overall perspective view of the embodiment according to the invention; Fig. 5 a side view of the protective screen according to the invention in the closed position; Fig. 6 shows the operation of the connecting arms according to the invention when closing the protective screen according to the invention; Fig. 7 a side view of the protective screen according to the invention in the half-raised position; Fig. 8 shows the operation of the connecting arms according to the invention in the semi-raised position of the protective screen according to the invention; Fig. 9 a side view of the protective screen according to the invention in the raised position; Fig. 10 the operation of the connecting arms according to the invention in the raised position of the protective screen according to the invention; and Fig. 11 a side view of the protective screen according to the invention with an angled connecting arm and a straight connecting arm. [Explanation of the preferred embodiment]

[0010] As can be seen from the Fig. 1 to Fig. 4, a pivoting arrangement according to the invention comprises a helmet body 1 which is provided on both sides with at least one locking slot 11 into which a connecting seat 2 is movably inserted. The connecting seat 2 has two connecting pins 21 on which a first connecting arm 3 and a second connecting arm 4 are pivotally mounted. A first engagement projection 31 and a second engagement projection 41 are arranged at one end of the first connecting arm 3 and the second connecting arm 4. The first engagement projection 31 and the second engagement projection 41 are rotatably connected to a protective screen 5. The first connecting arm 3 is provided on the inside, at the point connected to the connecting pin 21, with a running groove 6 in which a spring catch 22 of the connecting seat 2 moves.The track groove 6 has a first track 61, a second track 62 adjacent to the first track 61 and a guide wall 63 located between the first and second tracks 61, 62.

[0011] The first track 61 and the second track 62 overlap each other at their ends, such that the second track 62 is lower than the first track 61. One end of the guide wall 63 extends into the first track 61, so that the first track 61 forms an arc turning section 611. A concave arc groove 631 is formed at an end of the guide wall 63 corresponding to the arc turning section 611. Then, an inclined section 612 extends from the end of the arc turning section 611 into the second track 62. On the outer side of the first track 61, a support wall 64 is arranged, which extends to the first track 61 and merges into the outer side of the second track 62. At a position of the support wall 64 corresponding to the concave arcuate groove 631, a stop projection 641 is arranged which is embedded in the first track 61 and is used to press the spring catch 22 into the concave arcuate groove 631.

[0012] According to Fig. 1 to Fig. 10, the helmet according to the invention is a construction helmet, a motorcycle helmet, or other helmets that must be mounted with a protective visor. Assembly is carried out in such a way that the first connecting arm 3 and the second connecting arm 4 are pivotally connected to the connecting seat 2 such that the spring catch 22 engages in the groove 6 formed on the inside of the first connecting arm 3 and is movable therein. The connecting seat 2 is provided with locking elements 23 that engage in the respective locking slots 11 of the helmet body 1. By a simple engagement, the connecting seat 2 can be secured in the locking slots 11. Thereafter, the first engagement projection 31 of the first connecting arm 3 and the second engagement projection 41 of the second connecting arm 4 are inserted into a respective pivot hole 51 of the protective visor 5 such that a pivotal connection is established [see Fig. 1]. If the above-mentioned components are damaged or old, they can be replaced with new ones due to the removable design without having to dispose of the entire helmet body 1.

[0013] It will be Fig. 5 to Fig. 8. During use, the user wears the helmet body 1, with the protective visor 5 provided at the front for protection. At this time, the spring catch 22 is located at the front end of the first track 61 of the track groove 6. When the protective visor 5 is raised, the first link arm 3 and the second link arm 4 are driven in rotation. The spring catch 22 moves along the first track 61. The support wall 64 arranged on the outside of the first track 61 is provided with a plurality of projections 642 which are adapted to the spring catch 22. When the spring catch 22 moves to the projection 642, the spring catch 22 is prevented from moving. This limits the angle at which the protective visor 5 is opened or raised [see Fig. 6 and Fig. 8]. In this way, the protective disc 5 functions as a multi-stage angle selector when raised. Of course, the spring catch 22 can move freely over the projections 642, thereby generating clicking noises.

[0014] The following refers to Fig. 7 to Fig. 10. When the protective visor 5 is pivoted backward, the first connecting arm 3 and the second connecting arm 4 are pivotally carried along by the protective visor 5. When the first connecting arm 3 pivots, the spring catch 22 moves along the first track 61 against the guide wall 63 and then enters the arcuate turning section 611. Here, the protective visor 5 is pivoted over the position of the helmet rim. When the spring catch 22 is pivoted over the arcuate turning section 611 to the end, it is limited and guided by the stop projection 641 of the support wall 64, thereby preventing it from falling along the inclined section 612 into the second track 62. In addition, the spring catch 22 is guided into the concave arcuate groove 631. This completes the lifting process of the protective visor 5, with the protective visor 5 being positioned at the uppermost point [see Fig. 9 and Fig. 10].

[0015] When closing the protective screen 5, the protective screen 5 is moved slightly backwards. At the same time, the first connecting arm 3 and the second connecting arm 4 also move slightly backwards, which is caused by the Fig. 10. This process represents unlocking. With the elastic play limited by the space around the spring catch 22, the spring catch 22 can be released from the concave arcuate groove 631 if it is slightly displaced. In this case, the spring catch 22 falls through the inclined section 612 into the second track 62. This performs the closing process of the protective disc 5. During the closing process, the protective disc 5 moves on the second track 62 into the overlap point of the second track 62 and the first track 61, with the spring catch 22 being guided to the front end of the first track 61 until it returns to the closed position.

[0016] It should be noted that the first connecting arm 3 and the second connecting arm 4 are pivotally mounted on both sides of the helmet body 1 by the connecting seat 2. The angle of the protective screen 5 to the helmet body 1 can be continuously adjusted by the articulated connection of the two connecting arms 3, 4. This allows the angle of the protective screen 5 to be changed along the shape of the helmet body 1 when lifting, so that the protective screen 5 always borders the helmet body 1. In addition, the first connecting arm 3 and the second connecting arm 4 can be designed as two angled connecting arms or one angled and one straight connecting arm [see Fig. 11]. In this way, a margin for the adjustable angle is provided between the two connecting arms to achieve the above-mentioned effects.

[0017] In summary, the swivel arrangement according to the invention for a protective screen of a helmet can achieve the following advantages: 1. In the pivot assembly for a helmet visor according to the invention, the connecting seat is detachably connected to the helmet body and the visor through a simple insertion process. This means that when the above-mentioned components become damaged or old, they can be replaced with new ones without having to dispose of the entire helmet body. This achieves the excellent effects of convenient installation, increased applicability, and desired cost savings. 2. In the pivoting assembly for a helmet visor according to the invention, the first connecting arm and the second connecting arm are designed as two angled connecting arms or one angled and one straight connecting arm. This allows the angle of the visor to be adjusted along the shape of the helmet body when lifting, so that the visor always adheres to the helmet body. This effectively eliminates the problem and lack of wind resistance of the conventional visor. 3. In the pivoting arrangement for a protective screen of a helmet according to the invention, the opening and closing of the protective screen can be carried out reliably by moving the spring catch along the groove formed on the connecting arm. 4. The pivoting assembly for a helmet visor according to the invention features projections that allow the spring catch to be optimally positioned. This means that the opening angle of the visor is limited in such a way that the process of raising the visor functions as a multi-stage angle selection.

Claims

[1] Pivoting arrangement for a protective screen of a helmet, wherein a helmet body (1) is provided on both sides with at least one locking slot (11) into which a connecting seat (2) is movably inserted, wherein the connecting seat (2) has two connecting pins (21) on which a first connecting arm (3) and a second connecting arm (4) are pivotally mounted, and wherein a first engagement projection (31) and a second engagement projection (41) are arranged at one end of the first connecting arm (3) and the second connecting arm (4), and wherein the first engagement projection (31) and the second engagement projection (41) are rotatably connected to a protective screen (5), and wherein the first connecting arm (3) is provided on the inside at the point connected to the connecting pin (21) with a running groove (6) in which a spring catch (22) of the connecting seat (2) moves, and wherein the running groove (6) has a first track (61),a second track (62) adjacent to the first track (61) and a guide wall (63) located between the first and second tracks (61, 62), and wherein the first track (61) and the second track (62) overlap each other at their ends such that the second track (62) is lower than the first track (61), and wherein one end of the guide wall (63) extends into the first track (61) so that the first track (61) forms a curved turning section (611), and wherein a concave curved groove (631) is formed at an end of the guide wall (63) corresponding to the curved turning section (611), and wherein an inclined section (612) extends from the end of the curved turning section (611) into the second track (62), and wherein a support wall (64) is arranged on the outside of the first rail (61), which support wall extends to the first track (61) and into the outside of the second track (62) passes,and wherein at a location of the support wall (64) corresponding to the concave arcuate groove (631) there is arranged a stop projection (641) which is recessed into the first track (61) and is used to press the spring catch (22) into the concave arcuate groove (631). [2] Pivoting arrangement for a protective screen of a helmet according to claim 1, characterized by that the connecting seat (2) is provided with locking elements (23) which engage in the respective locking slots (11) of the helmet body (1). [3] Pivoting arrangement for a protective screen of a helmet according to claim 1, characterized by in that the support wall (64) arranged on the outside of the first track (61) is provided with a plurality of projections (642) which are adapted to the spring catch (22), the projections (642) being used to limit the rotational and moving position of the spring catch (22) on the first track (61). [4] Pivoting arrangement for a protective screen of a helmet according to claim 1, characterized by that the first connecting arm (3) and the second connecting arm (4) are designed as two angled connecting arms or one angled and one straight connecting arm. [5] Pivoting arrangement for a protective screen of a helmet according to claim 2, characterized by in that the support wall (64) arranged on the outside of the first track (61) is provided with a plurality of projections (642) which are adapted to the spring catch (22), the projections (642) being used to limit the rotational and moving position of the spring catch (22) on the first track (61). [6] Pivoting arrangement for a protective screen of a helmet according to claim 2, characterized by that the first connecting arm (3) and the second connecting arm (4) are designed as two angled connecting arms or one angled and one straight connecting arm. [7] Pivoting arrangement for a protective screen of a helmet according to claim 5, characterized by that the first connecting arm (3) and the second connecting arm (4) are designed as two angled connecting arms or one angled and one straight connecting arm.

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