A helmet

Abstract

The application discloses a helmet and relates to the technical field of human body safety protection devices. The helmet comprises a helmet body, a chin guard, two fork handles of the chin guard, the chin guard being installed on the helmet body through the fork handles and being capable of rotating relative to the helmet body, a shield assembly comprising a shield and a support, the shield assembly being movable between a lowered position and a lifted position relative to the helmet body, and a lifting mechanism comprising a trigger beside the support of the shield assembly, the trigger being driven by the fork handles of the chin guard, the trigger being capable of touching the support of the shield assembly in the lowered position and lifting the support from the lowered position. Furthermore, the lifting mechanism further comprises an elastic element, one end of the elastic element being connected to the support, and the elastic element being arranged to make the shield assembly continue to move to the lifted position after the shield assembly leaves the lowered position. According to the helmet, the moving path of the shield is fixed, the size of the chin guard can be reduced, and the helmet can be converted from a full helmet to a half helmet without being stuck.

Description

Technical Field

[0001] This invention relates to the field of human safety protection equipment technology, and in particular to a helmet. Background Technology

[0002] Workers in many special situations, such as painting workshops, firefighting and disaster relief, counter-terrorism and riot control, as well as underground tunnel operations in mining, coal mining, and tunneling, and piloting motor vehicles, racing cars, and aircraft, must wear helmets to protect their heads. A typical helmet generally includes a main shell, a visor, and a chin guard. The visor and chin guard are mounted on the main shell, and the visor can be adjusted to be open or closed relative to the main shell as needed. The visor is made of transparent material and its function is to prevent the intrusion of harmful particles and raindrops such as sand, rain, and smoke. In particular, it can protect the eyelids from branches, flying stones, and even explosives. The chin guard effectively protects the wearer's chin, mouth, nose, and cheeks in the event of a collision or other incident.

[0003] In practice, when wearing a helmet, it is often necessary to open the visor from time to time to communicate with the outside world or to dissipate the water vapor that accumulates inside the helmet due to the driver's breathing. For helmets with adjustable chin guards, opening the visor has another meaning: to prevent the visor from colliding with the chin guard. That is, the opening of the visor must match and be related to the operating state of the chin guard. In other words, when the chin guard is switching between a full-face helmet structure and a half-face helmet structure, the visor must be in the open position in time to avoid the chin guard colliding with the visor in the closed position when returning to the full-face helmet position and being damaged.

[0004] In related technologies, existing helmets can be converted between full-face and half-face helmets. However, most of them allow the visor and chin guard to rotate on a fixed axis. In order to ensure that the chin guard can rotate to the back of the helmet, there must be space between the chin guard and the visor. This makes the chin guard larger and the helmet as a whole appear bulky. When rotating, because the space between the chin guard and the visor is small, the chin guard and the visor are prone to getting stuck when converting between a full-face and half-face helmet. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a helmet that can reduce the size of the chin guard and better facilitate the conversion between full-face and half-face helmets.

[0006] The present invention also proposes another type of helmet.

[0007] A helmet according to a first aspect of the present invention includes:

[0008] Helmet body;

[0009] The chin guard is provided with two forks. The chin guard is mounted on the helmet body through the two forks and can rotate about a fixed axis relative to the helmet body. The chin guard can move between a closed position in front of the helmet body and an open position behind the helmet body, passing over the apex of the helmet body.

[0010] A visor assembly is movably mounted on the helmet body, the visor assembly being movable between a lowered position and an raised position relative to the helmet body, the visor assembly including a visor and brackets disposed on both sides of the visor;

[0011] The opening mechanism includes:

[0012] A guide plate is mounted on the helmet body, or the guide plate and the helmet body are integrally formed. The guide plate is used to guide and limit the movement of the protective shield assembly. The guide plate and the bracket are provided with mutually compatible guide components.

[0013] A large gear is mounted on the fork handle of the jaw guard, or the large gear and the fork handle on the jaw guard are made as a single unit, and the large gear rotates with the jaw guard;

[0014] The small gear meshes with the large gear. A trigger is provided on the small gear. When the guard is in the closed position or the open position, the trigger is located next to the support of the guard assembly in the lowered position.

[0015] In the initial stage of the movement of the jaw guard switching from the closed position to the open position and from the open position to the closed position, the large gear drives the small gear to rotate, and the trigger can touch the bracket of the guard assembly when it is in the descending position, and raise the guard assembly from the descending position.

[0016] The helmet according to embodiments of the present invention has at least the following beneficial effects:

[0017] The helmet includes a helmet body, a chin guard, a visor assembly, and a flap mechanism. The chin guard has two forks mounted on either side of the helmet body. The chin guard is mounted to the helmet body via these forks and can rotate about a fixed axis relative to the helmet body, allowing it to move between a closed position at the front of the helmet body and an open position at the rear of the helmet body, beyond the apex of the helmet body. The visor assembly includes a visor and supports on both sides of the visor. The visor assembly is movably mounted to the helmet body and can move between a lowered position and a raised position relative to the helmet body. The flap mechanism includes a guide plate, a large gear, and a small gear. The guide plate is mounted on the helmet body, or it may be an integral part of the helmet body. The guide plate guides and limits the movement of the visor assembly. The guide plate and supports have mutually compatible guide components, ensuring the visor assembly moves smoothly and efficiently. The helmet can move along the design path of the guide plate. The large gear is mounted on the fork handle of the chin guard. The chin guard is fixedly connected to the large gear, or the large gear is integrally formed with the fork handle on the chin guard. The large gear rotates with the chin guard. The small gear meshes with the large gear, so that the rotation of the large gear drives the rotation of the small gear. The small gear is equipped with a trigger. When the chin guard is in the closed or open position, the trigger is located next to the support of the visor assembly in the lowered position. During the initial movement of the chin guard from the closed position to the open position, and from the open position to the closed position, the large gear drives the small gear to rotate. The trigger can touch the support of the visor assembly in the lowered position and lift the visor assembly from the lowered position. This allows the visor assembly to rotate along a fixed path and the chin guard to rotate on a fixed axis, avoiding interference between the visor assembly and the chin guard during rotation, and realizing the conversion of the helmet from a full-face helmet to a half-face helmet.

[0018] According to some embodiments of the present invention, the large gear and the small gear are internally meshed.

[0019] According to some embodiments of the present invention, the large gear and the small gear are externally meshed.

[0020] According to some embodiments of the present invention, the movement of the large gear and the small gear is a fixed-axis rotation relative to the helmet body.

[0021] According to some embodiments of the present invention, when the jaw guard is switched from the closed position to the open position, the pinion rotates forward at an angle greater than or equal to 270°; when the jaw guard is switched from the open position to the closed position, the pinion rotates backward at an angle greater than or equal to 270°.

[0022] According to some embodiments of the present invention, the trigger is at least one lever.

[0023] According to some embodiments of the present invention, the guiding assembly includes mutually matched guide posts and guide grooves, the guide posts and the guide grooves being respectively mounted on the guide plate and the bracket.

[0024] According to some embodiments of the present invention, two sets of the guide components are provided on the guide plate and the bracket located on the same side of the helmet body.

[0025] According to some embodiments of the present invention, the guide groove of at least one group of the guide components is configured as a V-shaped groove or an arc-shaped groove.

[0026] According to some embodiments of the present invention, the lifting mechanism further includes an elastic element, one end of which is connected to the bracket, and the elastic element is configured to cause the protective cover assembly to continue moving to the raised position after the protective cover assembly leaves the lowered position.

[0027] According to some embodiments of the present invention, the elastic element is a tension spring.

[0028] According to some embodiments of the present invention, the bracket is provided with a hook for hooking the tension spring.

[0029] According to some embodiments of the present invention, the large gear is disposed on a turntable, and the turntable is fixedly mounted on the fork handle.

[0030] According to some embodiments of the present invention, the lifting mechanism further includes a chassis cover for covering the lifting mechanism, the chassis cover being fixedly connected to the fork handle.

[0031] According to some embodiments of the present invention, the chin guard is provided with a first limiting part, and the helmet body is provided with a second limiting part, the second limiting part cooperating with the first limiting part to limit the rotational position of the chin guard relative to the helmet body.

[0032] According to some embodiments of the present invention, the first limiting portion is one of a protrusion and a groove, and the second limiting portion is the other of the protrusion and the groove.

[0033] A helmet according to a second aspect of the present invention includes:

[0034] Helmet body;

[0035] The chin guard is provided with two forks. The chin guard is mounted on the helmet body through the two forks and can rotate about a fixed axis relative to the helmet body. The chin guard can move between a closed position in front of the helmet body and an open position behind the helmet body, passing over the apex of the helmet body.

[0036] A helmet shroud assembly, comprising a shroud and brackets disposed on both sides of the shroud, the ends of the brackets remote from the shroud being hinged to the helmet body, the shroud assembly being rotatable about the hinge points, and the shroud assembly being movable between a lowered position and an raised position relative to the helmet body;

[0037] The lifting mechanism includes a trigger, which is located beside the bracket of the guard assembly in the lowered position when the guard is in the closed position or the open position.

[0038] During the initial movement of the jaw guard switching from the closed position to the open position, and from the open position to the closed position, the trigger can touch the bracket of the guard assembly when it is in the lowered position, and raise the guard assembly from the lowered position.

[0039] The helmet according to embodiments of the present invention has at least the following beneficial effects:

[0040] The helmet includes a helmet body, a chin guard, a visor assembly, and a flap mechanism. The chin guard has two forks mounted on either side of the helmet body. The chin guard is mounted on the helmet body via the two forks and can rotate about a fixed axis relative to the helmet body, allowing it to move between a closed position at the front of the helmet body and an open position at the rear of the helmet body, passing over the apex of the helmet body. The visor assembly includes a visor and supports on both sides of the visor. The ends of the supports away from the visor are hinged to the helmet body, and the visor assembly can rotate about the hinge. The visor assembly moves between a lowered position and a raised position relative to the helmet body. The flap mechanism includes a trigger. When the chin guard is in the closed or open position, the trigger is located next to the support of the visor assembly in the lowered position. During the initial movement of the chin guard switching from the closed to the open position, and from the open to the closed position, the trigger can contact the support of the visor assembly in the lowered position, raising the visor assembly from the lowered position, thus converting the helmet from a full-face helmet to a half-face helmet.

[0041] According to some embodiments of the present invention, the trigger is a lever.

[0042] According to some embodiments of the present invention, the lifting mechanism further includes an elastic element, one end of which is connected to the bracket, and the elastic element is configured to cause the protective cover assembly to continue moving to the raised position after the protective cover assembly leaves the lowered position.

[0043] According to some embodiments of the present invention, the elastic element is a tension spring.

[0044] According to some embodiments of the present invention, the bracket is provided with a hook for hooking the tension spring.

[0045] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0046] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0047] Figure 1 This is a schematic diagram of the helmet structure according to an embodiment of the present invention;

[0048] Figure 2 for Figure 1 Partial exploded view of the helmet;

[0049] Figure 3 This is an exploded view of the helmet-opening mechanism according to an embodiment of the present invention;

[0050] Figure 4 This is a schematic diagram illustrating the cooperation of the bracket, pinion, and guide plate in an embodiment of the present invention.

[0051] Figure 5 for Figure 4 Exploded view of the bracket, pinion, and guide plate in operation;

[0052] Figure 6 This is a schematic diagram of the guide plate according to an embodiment of the present invention;

[0053] Figure 7 This is a schematic diagram of a pinion gear according to an embodiment of the present invention;

[0054] Figure 8 This is a schematic diagram of the bracket according to an embodiment of the present invention;

[0055] Figure 9 This is a schematic diagram of the jaw guard and the large gear in an embodiment of the present invention;

[0056] Figure 10 This is a schematic diagram illustrating the fit between the chin guard and the visor in the full-face helmet configuration according to an embodiment of the present invention.

[0057] Figure 11 This is a schematic diagram illustrating the relationship between the chin guard and the visor when the full-face helmet is converted to a half-face helmet according to an embodiment of the present invention.

[0058] Figure 12 This is a schematic diagram illustrating the relationship between the chin guard and the visor when the full-face helmet is converted to a half-face helmet according to an embodiment of the present invention.

[0059] Figure 13 This is a schematic diagram of the helmet in a half-helmet state according to an embodiment of the present invention;

[0060] Figure 14 for Figure 13 A magnified view of a section at point A;

[0061] Figure 15 This is a schematic diagram of the process of converting a full-face helmet to a half-face helmet according to an embodiment of the present invention;

[0062] Figure 16 This is a schematic diagram of the process of converting a half-helmet to a full-face helmet according to an embodiment of the present invention.

[0063] Icon labels:

[0064] Helmet 100;

[0065] Helmet body 110; chin guard 120; fork handle 121; visor assembly 130; visor 131; bracket 132; opening mechanism 140; guide plate 141; large gear 142; small gear 143; trigger element 1431; first guide post 1411; second guide post 1412; first guide groove 1413; second guide groove 1414; elastic element 144; hook 1441; turntable 1421; chassis cover 145; first limiting part 1201; second limiting part 1101. Detailed Implementation

[0066] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0067] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0068] In the description of this invention, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features or their sequential relationship.

[0069] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0070] Reference Figure 1 , Figure 2As shown, a first aspect of the present invention provides a helmet 100, including: a helmet body 110, a chin guard 120, a visor assembly 130, and an opening mechanism 140. The chin guard 120 is provided with two forks 121, which are respectively mounted on both sides of the helmet body 110. The chin guard 120 is mounted on the helmet body 110 via the two forks 121 and rotates about a fixed axis relative to the helmet body 110, so that the chin guard 120 can move between a closed position in front of the helmet body 110 and an open position behind the helmet body 110, passing over the apex of the helmet body 110. The visor assembly 130... The helmet 110 includes a visor 131 and supports 132 on both sides of the visor 131. It should be noted that the visor 131 is made of transparent material and its function is to prevent rainwater and sand from entering the helmet body 110 while driving. The visor assembly 130 is movably mounted on the helmet body 110 and can move between a lowered position and a raised position relative to the helmet body 110. The lifting mechanism 140 includes a guide plate 141, a large gear 142, and a small gear 143. The guide plate 141 is mounted on the helmet body 110 and is used for guiding the visor assembly 130... The movement is guided and limited. Guide plates 141 and brackets 132 are equipped with mutually compatible guide components, allowing the guard assembly 130 to move along the designed path of the guide plate 141. A large gear 142 is mounted on the fork handle 121 of the jaw guard 120, and the jaw guard 120 is fixedly connected to the large gear 142, which rotates with the jaw guard 120. A small gear 143 meshes with the large gear 142, causing the rotation of the large gear 142 to drive the rotation of the small gear 143. A trigger element 1431 is provided on the small gear 143, and the trigger element 1431 is in position when the jaw guard 120 is in the closed or open position. At the support 132 of the visor assembly 130 in the lowered position, during the initial movement of the chin guard 120 switching from the closed position to the open position and from the open position to the closed position, the large gear 142 drives the small gear 143 to rotate. The trigger 1431 can touch the support 132 of the visor assembly 130 in the lowered position, raising the visor assembly 130 from the lowered position. This allows the visor assembly 130 to rotate along a fixed path, and the chin guard 120 to rotate on a fixed axis, avoiding interference between the visor assembly 130 and the chin guard 120 during rotation, thus enabling the helmet 100 to switch from a full-face helmet to a half-face helmet.

[0071] The large gear 142 can also be integrally formed with the fork handle 121, so that when the fork handle 121 is rotated, the large gear 142 can rotate with the fork handle 121, ensuring that the rotation of the fork handle 121 can drive the large gear 142 to rotate in a timely manner. Similarly, the guide plate 141 can also be integrally formed with the helmet body 110, so that the guide plate 141 and the helmet body 110 are more securely fixed.

[0072] In one embodiment of the present invention, reference is made to... Figures 10 to 13 As shown, the large gear 142 and the small gear 143 are internally meshed. This toothed transmission provides more reliable motion transmission, a wider applicable load and speed range, high efficiency, long service life, compact structure, and small external dimensions. The internal meshing further reduces the size of the helmet 100, resulting in a compact transmission, less wear, and a longer service life. Alternatively, the large gear 142 and the small gear 143 can also be externally meshed to achieve the same transmission; this is not a limitation here.

[0073] In one embodiment of the present invention, reference is made to... Figures 10 to 12 As shown, when the jaw guard 120 switches from the closed position to the open position, the large gear 142 drives the small gear 143 to rotate forward by an angle greater than or equal to 270°; when the jaw guard 120 switches from the open position to the closed position, the large gear 142 drives the small gear 143 to rotate backward by an angle greater than or equal to 270°. Regardless of whether the switch is from the closed position to the open position or vice versa, the rotation angle of the small gear can be 270°, 300°, 330°, 360°, etc. For example, when the jaw guard 120 switches from the closed position to the open position, the large gear 142 drives the small gear 143 to rotate forward one full turn; when the jaw guard 120 switches from the open position to the closed position, the large gear 142 drives the small gear 143 to rotate backward one full turn. The transmission is simple, reliable, and easy to implement. The large gear 142 drives the small gear 143 to rotate, and the small gear 143 drives the bracket 132 to rotate. The bracket 132 is fixedly connected to the protective cover 131, so that the protective cover 131 can move along the path defined by the guide plate 141, avoiding collision between the jaw guard 120 and the protective cover 131.

[0074] In one embodiment of the present invention, reference is made to... Figure 7 As shown, the trigger element 1431 is at least one lever. The trigger element 1431 is provided on the pinion 143. The trigger element 1431 can be one lever or two levers; this is not limited here. The rotation of the pinion 143 drives the lever to rotate, and the lever contacts the bracket 132, causing the bracket 132 to move simultaneously with the rotation of the lever. The bracket 132 moves along the path specified by the guide plate 141 due to the constraint of the guide plate 141. The lever structure is simple and the force transmission is reliable.

[0075] In one embodiment of the present invention, reference is made to... Figures 4 to 8 As shown, the guide assembly includes mutually mating guide posts and guide grooves, which are respectively mounted on the guide plate 141 and the bracket 132. The guide posts and guide grooves cooperate with each other, allowing the bracket 132 to move along a predetermined path along the guide groove.

[0076] Two sets of guide components are provided on the guide plate 141 and the bracket 132 located on the same side of the helmet body 110. One set is used to limit the movement path of the shield 131, and the other set is used to prevent the bracket 132 from becoming unstable and shifting when the shield 131 moves. (Refer to...) Figures 4 to 8 As shown, the guide plate 141 is provided with a first guide groove 1413 and a first guide post 1411, and the bracket 132 is provided with a second guide groove 1414 and a second guide post 1412. The first guide groove 1413 is movably engaged with the second guide post 1412, and the second guide groove 1414 is movably engaged with the first guide post 1411. The movable engagement of the first guide groove 1413 and the second guide post 1412 ensures that the bracket 132 can move along the direction designed by the first guide groove 1413. It should be noted that the path designed by the first guide groove 1413 refers to the path taken by the helmet 131 from the lowered position to the raised position. That is to say, the path referred to in this embodiment is that relative to the helmet body 110, it first moves forward and upward to reach the highest point, and then moves backward and downward. This path is not limited here and can be changed according to different sizes of helmets 100 or various needs. The second guide groove 1414 moves in conjunction with the first guide post 1411 to ensure the stable movement of the bracket 132 and prevent deviation, thus ensuring that the bracket 132 can drive the protective cover 131 to move stably. The guide post slides in conjunction with the guide groove, allowing the guide post to move along the guide groove.

[0077] In this configuration, at least one set of guide components has guide grooves that are either V-shaped or arc-shaped. (Refer to...) Figures 10 to 12 , Figure 15 As shown, in the full-face helmet configuration, when the chin guard 120 is rotated backward, it drives the large gear 142 to rotate. The large gear 142 drives the small gear 143 to rotate forward. The small gear 143 causes the support 132 to move. The support 132 drives the visor 131 to move along the predetermined path of the first guide groove 1413, first moving upward and forward, and after reaching its highest point, moving downward and backward, close to the helmet body 110. This makes the visor 131 closer to the helmet body 110 and away from the chin guard 120, creating a certain gap between the visor 131 and the chin guard 120. The chin guard 120 rotates on a fixed axis, allowing it to smoothly pass over the visor 131, thus achieving the conversion from a full-face helmet to a half-face helmet. (Refer to...) Figures 10 to 12 , Figure 16 As shown, in the half-helmet state, when the drive visor 131 rotates forward, it drives the large gear 142 to rotate. The large gear 142 drives the small gear 143 to rotate in the opposite direction. The small gear 143 causes the bracket 132 to move. The bracket 132 drives the visor 131 to move upward and forward first. After reaching the highest point, it moves downward and backward, close to the helmet body 110. This makes the visor 131 close to the helmet body 110 and away from the chin guard 120, so that a certain gap is created between the visor 131 and the chin guard 120. The chin guard 120 rotates on a fixed axis and can smoothly rotate past the visor 131, realizing the conversion from half-helmet to full-helmet.

[0078] In one embodiment of the present invention, reference is made to... Figures 10 to 12 As shown, the lifting mechanism 140 also includes an elastic element 144. One end of the elastic element 144 is connected to the bracket 132. The elastic element 144 is configured to allow the protective cover assembly 130 to continue moving to the raised position after it leaves the lowered position. The elastic element 144 provides elastic force for the movement of the bracket 132, enabling the bracket 132 to rotate faster. It also allows the bracket 132 to continue moving along the guide plate 141 to the raised position after separating from the pinion 143, thus achieving the transition from the lowered position to the raised position. The elastic element can be a spring, tension spring, etc., resulting in a simple structure and high stability.

[0079] In one embodiment of the present invention, reference is made to... Figure 8 As shown, the bracket 132 is provided with a hook 1441 for hooking the tension spring. This facilitates the connection between the bracket 132 and the tension spring, and also allows for easy replacement or disassembly if the tension spring is damaged.

[0080] In one embodiment of the present invention, reference is made to... Figure 9 As shown, the large gear 142 is mounted on the turntable 1421, which is fixedly mounted on the fork handle 121. The large gear 142 is equipped with the turntable 1421, and the turntable 1421 is fixedly connected to the fork handle 121, making the large gear 142 and the turntable 1421 fixedly connected. The structure is easy to implement, simple and reasonable to manufacture, and also allows for the replacement or disassembly of the fork handle 121 or the large gear 142.

[0081] In one embodiment of the present invention, reference is made to... Figure 2 As shown, the lifting mechanism 140 also includes a chassis cover 145 for covering the lifting mechanism 140. The chassis cover 145 is fixedly connected to the fork handle 121 to prevent dust, rainwater and other pollutants from entering the helmet 100 and damaging the lifting mechanism 140. This better protects the lifting mechanism 140 and can extend the service life of the helmet 100.

[0082] In one embodiment of the present invention, reference is made to... Figure 13 and Figure 14 As shown, the chin guard 120 is provided with a first limiting part 1201, and the helmet body 110 is provided with a second limiting part 1101. The second limiting part 1101 cooperates with the first limiting part 1201 to limit the rotational position of the chin guard 120 relative to the helmet body 110. This better limits the rotation angle of the chin guard 120, preventing excessive force from causing the chin guard 120 to rotate too much and thus damaging the helmet 100. At the same time, it can also effectively fix the chin guard 120, so that in the half-helmet position, the chin guard 120 remains relatively stationary relative to the helmet body 110, thus improving safety.

[0083] The first limiting part 1201 is one of the protrusion and the groove, and the second limiting part 1101 is the other of the protrusion and the groove. The groove and the protrusion have a simple structure and are easy to manufacture. At the same time, the protrusion and the groove are engaged and fit together, which is convenient for users.

[0084] Reference Figures 1 to 3 As shown, a second aspect of the present invention also provides another helmet 100. The helmet 100 includes a helmet body 110, a chin guard 120, a visor assembly 130, and a flap mechanism 140. The chin guard 120 is provided with two forks 121, which are respectively mounted on both sides of the helmet body 110. The chin guard 120 is mounted on the helmet body 110 via the two forks 121 and can rotate about a fixed axis relative to the helmet body 110, so that the chin guard 120 can move between a closed position in front of the helmet body 110 and an open position where the chin guard 120 is located behind the helmet body 110 and beyond the apex of the helmet body 110. The visor assembly 130 includes a visor 131 and brackets 132 disposed on both sides of the visor 131. The brackets 132 are far from the visor 131. The end of the visor 131 is hinged to the helmet body 110. The visor assembly 130 can rotate around the hinge and move between a lowered position and an raised position relative to the helmet body 110. The lifting mechanism 140 includes a trigger 1431. When the chin guard 120 is in the closed or open position, the trigger 1431 is located next to the bracket 132 of the visor assembly 130 in the lowered position. During the initial movement of the chin guard 120 from the closed position to the open position and from the open position to the closed position, the trigger 1431 can touch the bracket 132 of the visor assembly 130 in the lowered position and lift the visor assembly 130 from the lowered position, thereby realizing the conversion of the helmet 100 from a full-face helmet to a half-face helmet.

[0085] In one embodiment of the present invention, reference is made to... Figure 4 , Figure 5 and Figure 7 As shown, the trigger 1431 is a lever. The lever has a simple structure. When the lifting mechanism 140 rotates, it drives the lever to rotate. The lever pushes the bracket 132 to move, so that the protective cover assembly 130 can move from the lowered position to the raised position.

[0086] In one embodiment of the present invention, reference is made to... Figures 10 to 12 As shown, the lifting mechanism 140 also includes an elastic element 144, one end of which is connected to the bracket 132. The elastic element 144 is configured to allow the cover assembly 130 to continue moving to the raised position after it leaves the lowered position. The elastic element 144 provides elastic force for the movement of the bracket 132, enabling the bracket 132 to rotate faster. It also allows the bracket 132 to continue moving along the guide plate 141 to the raised position after it separates from the pinion 143, thus realizing the transition from the lowered position to the raised position.

[0087] The elastic element can be a spring, tension spring, etc., which has a simple structure and high stability.

[0088] In one embodiment of the present invention, reference is made to... Figure 8 As shown, the bracket 132 is provided with a hook 1441 for hooking the tension spring. This facilitates the connection between the bracket 132 and the tension spring, and also allows for easy replacement or disassembly if the tension spring is damaged.

[0089] In one specific embodiment, reference is made to Figure 15 As shown, Figure 15 (a) to Figure 15 As shown in (b), the chin guard 120 is opened, and the chin guard 120 is started to rotate. Since the size of the pinion 143 is smaller than the size of the gear 142, it is ensured that the movement of the chin guard 120 does not exceed the movement of the visor 131 before it comes into close contact with the helmet body 110. In other words, the chin guard 120 is behind the visor 131. Figure 15 (b) to Figure 15 As shown in (c), the chin guard 120 rotates and is fixedly connected to the large gear 142. The large gear 142 rotates simultaneously with the chin guard 120. The rotation of the large gear 142 drives the small gear 143 to rotate according to the tooth transmission. The small gear 143 is equipped with a lever. The bracket 132, which is fixedly connected to the helmet cover 131, moves in cooperation with the small gear 143 and also cooperates with the lever. The rotation of the small gear 143 drives the lever to rotate, and the lever pushes the bracket 132 to move. However, since the second guide post 1412 of the bracket 132 moves in cooperation with the first guide groove 1413 of the guide plate 141, the bracket 132 will move along the direction designed by the first guide groove 1413. That is, it first moves upward and forward, and after rising to the highest point, it moves downward and backward until it is close to the helmet body 110. Figure 15 (c) to Figure 15 As shown in (d), the jaw guard 120 then rotates past the guard 131 and continues to rotate, as shown in the figure. Figure 7 As shown in (e), the chin guard 120 is fixed to the helmet body 110 until the first limiting part 1201 of the chin guard 120 connects with the second limiting part 1101 of the helmet body 110, thus achieving the conversion from a full-face helmet to a half-face helmet. If the visor 131 is needed at this time, it can be manually removed. (Refer to...) Figure 16 As shown, Figure 16 (a) to Figure 16 As shown in (b), in the half-helmet position, the first limiting part 1201 and the second limiting part 1101 are opened in the fixed connection state, and the chin guard 120 is driven to rotate. Figure 16 (b) to Figure 16As shown in (c), the chin guard 120 rotates and is fixedly connected to the large gear 142. The large gear 142 rotates simultaneously with the chin guard 120. The rotation of the large gear 142, according to the tooth transmission, drives the small gear 143 to rotate. The small gear 143 is equipped with a lever. The bracket 132, which is fixedly connected to the guard 131, moves in cooperation with the small gear 143 and also cooperates with the lever. The rotation of the small gear 143 drives the lever to rotate, and the lever pushes the bracket 132 to move. However, since the second guide post 1412 of the bracket 132 moves in cooperation with the first guide groove 1413 of the guide plate 141, and the guide plate 141 is fixed on the chassis cover 145, and the chassis cover 145 is fixed on the helmet body 110, the bracket 132 will move along the direction designed by the first guide groove 1413. That is, it first moves upward and forward, and after rising to the highest point, it moves downward and backward until it is close to the helmet body 110. Figure 16 (c) to Figure 16 As shown in (d), the shield 131 then rotates over the shield 131 and continues to rotate, returning to the position under the full-face helmet, and then the shield 131 is removed, realizing the conversion from a half-face helmet to a full-face helmet.

[0090] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A helmet, characterized in that, include: Helmet body; The chin guard is provided with two forks. The chin guard is mounted on the helmet body through the two forks and can rotate about a fixed axis relative to the helmet body. The chin guard can move between a closed position in front of the helmet body and an open position behind the helmet body, passing over the apex of the helmet body. A visor assembly is movably mounted on the helmet body, the visor assembly being movable between a lowered position and an raised position relative to the helmet body, the visor assembly including a visor and brackets disposed on both sides of the visor; The opening mechanism includes: A guide plate is mounted on the helmet body, or the guide plate and the helmet body are integrally formed. The guide plate is used to guide and limit the movement of the protective shield assembly. The guide plate and the bracket are provided with mutually compatible guide components. A large gear is mounted on the fork handle of the jaw guard, or the large gear and the fork handle on the jaw guard are made as a single unit, and the large gear rotates with the jaw guard; The small gear meshes with the large gear. A trigger is provided on the small gear. When the guard is in the closed position or the open position, the trigger is located next to the support of the guard assembly in the lowered position. In the initial stage of the movement of the jaw guard switching from the closed position to the open position and from the open position to the closed position, the large gear drives the small gear to rotate, and the trigger can touch the bracket of the guard assembly when it is in the lowered position, and raise the guard assembly from the lowered position; The guide plate is provided with a first guide groove and a first guide post, and the bracket is provided with a second guide groove and a second guide post. The first guide groove and the second guide post are movablely engaged so that the bracket can move along the path of the first guide groove. The first guide groove is a V-shaped groove or an arc-shaped groove, and the path is such that when the shield moves from the lowering position to the raising position, the shield moves forward and upward relative to the helmet body, reaches the highest point, and then moves backward and downward, so that the shield is close to the helmet body and has a certain gap with the chin guard, so that the chin guard can smoothly turn through the shield. The second guide groove and the first guide post are movablely engaged so that the bracket can drive the shield to move stably along the path of the first guide groove.

2. The helmet according to claim 1, characterized in that, The large gear and the small gear are internally meshed.

3. The helmet according to claim 1, characterized in that, The large gear and the small gear are externally meshed.

4. The helmet according to claim 2 or 3, characterized in that, The movement of both the large gear and the small gear is a fixed-axis rotation relative to the helmet body.

5. The helmet according to claim 4, characterized in that, When the jaw guard switches from the closed position to the open position, the pinion rotates forward at an angle greater than or equal to 270°; when the jaw guard switches from the open position to the closed position, the pinion rotates backward at an angle greater than or equal to 270°.

6. The helmet according to claim 1, characterized in that, The trigger is at least one lever.

7. The helmet according to claim 1, characterized in that, The lifting mechanism also includes an elastic element, one end of which is connected to the bracket. The elastic element is configured to cause the protective cover assembly to continue moving to the raised position after the protective cover assembly leaves the lowered position.

8. The helmet according to claim 7, characterized in that, The elastic element is a tension spring.

9. The helmet according to claim 8, characterized in that, The bracket is provided with hooks for hooking the tension spring.

10. The helmet according to claim 2 or 3, characterized in that, The large gear is mounted on the turntable, which is fixedly mounted on the fork handle.

11. The helmet according to claim 1, characterized in that, The lifting mechanism also includes a chassis cover for covering the lifting mechanism, the chassis cover being fixedly connected to the fork handle.

12. The helmet according to claim 1, characterized in that, The chin guard is provided with a first limiting part, and the helmet body is provided with a second limiting part. The second limiting part cooperates with the first limiting part to limit the rotational position of the chin guard relative to the helmet body.

13. The helmet according to claim 12, characterized in that, The first limiting part is one of the protrusion and the groove, and the second limiting part is the other of the protrusion and the groove.

14. A helmet, characterized in that, include: Helmet body; The chin guard is provided with two forks. The chin guard is mounted on the helmet body through the two forks and can rotate about a fixed axis relative to the helmet body. The chin guard can move between a closed position in front of the helmet body and an open position behind the helmet body, passing over the apex of the helmet body. A helmet shroud assembly, comprising a shroud and supports disposed on both sides of the shroud, the ends of the supports remote from the shroud being hinged to the helmet body, the shroud assembly being rotatable about the hinge points, and the shroud assembly being movable between a lowered position and an raised position relative to the helmet body; The lifting mechanism includes a trigger, which is located beside the support of the guard assembly in the lowered position when the guard is in the closed position or the open position. In the initial stage of the movement of the jaw guard switching from the closed position to the open position and from the open position to the closed position, the trigger can touch the bracket of the guard assembly when it is in the lowered position and raise the guard assembly from the lowered position. The lifting mechanism also includes a guide plate. The second guide post of the bracket moves in conjunction with the first guide groove of the guide plate. The bracket moves along the direction of the first guide groove so that the visor moves upward and forward first. When it reaches the highest point, it moves downward and backward until it is close to the helmet body so that the chin guard can turn over the visor.

15. The helmet according to claim 14, characterized in that, The trigger is a lever.

16. The helmet according to claim 14, characterized in that, The lifting mechanism also includes an elastic element, one end of which is connected to the bracket. The elastic element is configured to cause the protective cover assembly to continue moving to the raised position after the protective cover assembly leaves the lowered position.

17. The helmet according to claim 16, characterized in that, The elastic element is a tension spring.

18. The helmet according to claim 17, characterized in that, The bracket is provided with hooks for hooking the tension spring.

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