Helmet

Abstract

Disclosed in the present invention is a helmet, comprising a helmet shell, a visor, and visor mounting assemblies, wherein the visor mounting assemblies each comprise a base and a locking cover, the base is provided with at least one first constraint body, the locking cover comprises a cover body and a button unit, the cover body comprises an insertion part, and a second constraint body is arranged on the insertion part. According to the helmet of the present invention, the visor is fixed to the helmet shell by means of the visor mounting assemblies, and during mounting of the visor, mounting is completed simply by passing the insertion part of the locking cover through the visor to be inserted into the base, then rotating the locking cover to engage the first constraint body and the second constraint body, and finally pressing the button unit to switch the button unit to a pressed state; during dismounting, a reverse operation is performed and comprises: first pressing the button unit to switch to a pop-out state to release locking, then rotating the cover body, and finally pulling out the locking cover. According to the helmet of the present invention, the visor can be mounted or dismounted using one hand, and a wearer can even carry out the operation when wearing the helmet. The helmet is convenient and practical.

Description

A helmet Technical Field

[0001] The present invention relates to the technical field of helmets, and in particular to a helmet. Background Art

[0002] Helmets are head protection devices widely used in various fields, including transportation. For example, people should wear helmets to protect their heads when riding motorcycles, racing cars, racing boats, self-balancing scooters, aircraft, and electric bikes or bicycles. Furthermore, people also need to wear helmets to protect their heads in situations such as paint shops, firefighting, anti-terrorism and riot control, and in harsh environments such as mining, coal mining, and excavation. This helps prevent unexpected injuries. Helmets have lenses on the front for eye protection. Existing helmets typically have lenses attached to both sides of the helmet body using bolts or clips. Assembly and disassembly require both hands, making the process cumbersome and sometimes requiring external tools, making quick, one-handed assembly and disassembly impossible.

[0003] Summary of the Invention

[0004] In order to solve one of the technical problems existing in the prior art, the present invention provides a helmet, wherein goggles are assembled to the helmet shell through a lens mounting assembly and can be assembled and disassembled with one hand, which is very convenient.

[0005] A helmet according to an embodiment of the first aspect of the present invention comprises:

[0006] Helmet shell;

[0007] Goggles, the goggles are movably arranged in front of the helmet shell, and mounting handles are provided on both sides of the goggles, and the mounting handles are provided with a first hole;

[0008] The lens mounting assembly is provided with two lens mounting assemblies, and the two lens mounting assemblies are respectively arranged on both sides of the helmet shell, and the lens mounting assemblies correspond to the mounting handle one by one; the lens mounting assembly includes a base and a locking cover, the base is fixedly provided on the helmet shell, a second hole is provided in the middle of the base, at least one first constraint body is provided around the second hole, an entry port is provided at the end of the first constraint body, and at least one limiting protrusion is provided on the base; the locking cover includes a cover body and a button unit, the cover body includes an umbrella cover part and an insertion part, the insertion part is used to pass through the first hole and be inserted into the second hole, the insertion part is provided with a second constraint body cooperating with the first constraint body, the insertion part is provided with a first limiting block cooperating with the limiting protrusion, the button unit is movably provided on the locking cover, the button unit has a pressed state and a pop-up state, the button unit is provided with a second limiting block, when the button unit is in the pressed state, the second limiting block cooperates with the limiting protrusion to limit the rotation of the cover body;

[0009] During installation, the button unit is in a pop-up state, the insertion portion of the locking cover passes through the first hole along the axial direction of the second hole and is inserted into the second hole, and the second constraint body is inserted into the rear part of the first constraint body facing the entrance; the cover body is rotated until the first limit block touches the limit protrusion, and the second constraint body moves from the entrance to the back of the first constraint body, and the first constraint body and the second constraint body cooperate to prevent the locking cover from falling out in the axial direction; the button unit is pressed to switch the button unit to the pressed state, and the second limit block cooperates with the limit protrusion to limit the rotation of the cover body, locking the position of the second constraint body to the back of the first constraint body; during disassembly, the button unit is pressed to switch the button unit to the pop-up state, release the lock, and then rotate the cover body until the second constraint body faces the entrance, and finally pull out the locking cover.

[0010] The helmet according to the embodiment of the first aspect of the present invention has at least the following beneficial effects: the helmet of the present invention fixes the goggles to the helmet shell through the lens mounting assembly. When installing the goggles, it is only necessary to insert the insertion portion of the locking cover through the first hole of the goggles and into the base, then rotate the locking cover to make the first constraint body and the second constraint body cooperate, and finally press the button unit to switch the button unit to the pressed state, thus completing the installation. When removing, the operation is reversed, first pressing the button unit to switch the button unit to the pop-up state to release the lock, then rotating the cover until the second constraint body is facing the entrance, and finally pulling out the locking cover. Whether installing or removing the goggles, the helmet of the present invention can be operated with one hand, and the wearer can even perform the above operations while wearing the helmet, which is convenient and practical.

[0011] In some embodiments of the helmet according to the first aspect of the present invention, the limiting protrusion includes a first limiting protrusion and a second limiting protrusion, the first limiting protrusion cooperates with the first limiting block, and the second limiting protrusion cooperates with the second limiting block.

[0012] In some embodiments provided by the helmet according to the first aspect of the present invention, the first limiting protrusion is arranged on the first constraint body, the first limiting protrusion extends along the axial direction of the second hole, and the first limiting block is arranged below the umbrella cover.

[0013] In some embodiments of the helmet according to the first aspect of the present invention, the second limiting protrusion is provided on the first constraint body, and the second limiting protrusion extends toward the inside of the second hole.

[0014] In some embodiments of the helmet according to the first aspect of the present invention, a locking structure is provided between the insertion portion and the button unit, and the locking structure is used to keep the button unit in the pressed state after switching to the pressed state.

[0015] According to some embodiments provided by the helmet of the first aspect of the present invention, the locking structure includes a positioning bar and a locking block, the positioning bar is movably arranged on the button unit, the locking block is arranged on the insertion part, the locking block is provided with a slide for the unidirectional movement of the positioning bar, the slide is provided with a first bayonet and a second bayonet, pressing the button unit to move the positioning bar along the slide, the positioning bar switches between the first bayonet and the second bayonet, when the positioning bar is in the first bayonet, the button unit is in a pop-up state, and when the positioning bar is in the second bayonet, the button unit is in a pressed state.

[0016] In some embodiments of the helmet according to the first aspect of the present invention, the locking block is provided with multiple slides, and the multiple slides are interconnected to form a closed loop.

[0017] In some embodiments of the helmet according to the first aspect of the present invention, steps are provided at the connection points of the multiple slideways along the moving direction of the positioning bar to prevent the positioning bar from moving in the opposite direction.

[0018] In some embodiments of the helmet according to the first aspect of the present invention, the cover body and the button unit are provided with corresponding guide structures, and the guide structures include a plurality of guide blocks and guide grooves that cooperate with each other.

[0019] In some embodiments provided by the helmet according to the first aspect of the present invention, a mask cover plate is provided between the base and the locking cover, the mask cover plate covers the base, and a third hole is provided on the mask cover plate, and the third hole corresponds to the first hole and the second hole.

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purposes and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation to the technical solution of the present invention.

[0022] FIG1 is a schematic structural diagram of a helmet provided by the present invention.

[0023] FIG2 is a front view of the helmet in FIG1 after some components are exploded.

[0024] FIG3 is an axonometric diagram of the helmet in FIG2 .

[0025] FIG4 is a schematic diagram of the lens mounting structure in FIG3 .

[0026] FIG5 is a schematic structural diagram of the base in FIG4 .

[0027] FIG6 is a schematic structural diagram of the locking cover in FIG4 after being disassembled.

[0028] FIG. 7 is an enlarged schematic diagram of point A in FIG. 6 .

[0029] FIG8 is a schematic structural diagram of the locking cover in FIG6 after assembly.

[0030] FIG9 is a schematic diagram of the base and the locking cover in FIG4 after being assembled.

[0031] Explanation of the accompanying figures: Helmet shell 100; mounting area 110; goggles 200; mounting handle 210; first hole 211; lens mounting assembly 300; locking cover 310; button unit 311; pressing portion 3111; second limit block 3112; positioning bar 3113; avoidance groove 3114; guide groove 3115; cover body 312; insertion portion 3121; second constraint body 3122; constraint groove 3123; locking block 3124; first slide 3124a; second slide 3124b; third slide 3124c; guide block 3125; mask cover 320; third hole 321; support protrusion 322; base 330; second hole 331; first constraint body 332; entrance 333; first limit protrusion 334; second limit protrusion 335. DETAILED DESCRIPTION

[0032] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0034] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0036] The helmet of the present invention will be further described below with reference to Figures 1 to 9 and specific embodiments.

[0037] As shown in Figure 1, the present invention provides an embodiment of a helmet, comprising a helmet shell 100, goggles 200, and a lens mounting assembly 300. The goggles 200 are rotatably mounted on the helmet shell 100 via the lens mounting assembly 300.

[0038] It is easy to understand that the helmet shell 100 mentioned in the present invention is a general term, which includes not only the shell cover body of the helmet, but also includes but is not limited to various other parts and accessories fastened to or attached to the shell cover body, such as windshields, covers, hangers, seals, fasteners and other functional parts or decorative parts.

[0039] As shown in Figures 1 to 3, mounting areas 110 are provided on both sides of the helmet shell 100. The goggles 200 are movably mounted in front of the helmet shell 100. Mounting handles 210 are provided on both sides of the goggles 200. The two mounting handles 210 are located on either side of the helmet shell 100 and correspond to the mounting areas 110 on the helmet shell 100. Two lens mounting assemblies 300 are provided, one on each side of the mounting areas 110 of the helmet shell 100. The two lens mounting assemblies 300 respectively secure the corresponding mounting handles 210 to the mounting areas 110 of the helmet shell 100, preventing the mounting handles 210 from falling off due to translational movements such as forward, backward, upward, downward, or left-right expansion.

[0040] Furthermore, as shown in FIG3 , the mounting handle 210 is provided with a first hole 211. The lens mounting assembly 300 passes through each of the first holes 211 to mount the mounting handle 210 on the mounting area 110 of the helmet shell 100. Once mounted, the mounting handle 210 can rotate about the center of the first hole 211, thereby driving the goggles 200, allowing the goggles 200 to be lowered in front of the helmet shell 100 to protect the wearer's eyes, or raised above the helmet shell 100 to release the protection.

[0041] As shown in FIG. 2 to FIG. 4 , in this embodiment, each lens mounting assembly 300 includes a locking cover 310 , a mask cover plate 320 and a base 330 .

[0042] As shown in Figures 2 and 3, the base 330 is fixedly mounted on the helmet shell 100. It is easy to understand that the "base 330 is fixedly mounted on the helmet shell 100" in the present invention can mean that the base 330 and the helmet shell 100 are integrally formed, or the base 330 is assembled to the mounting area 110 of the helmet shell 100 by adhesion, bolt locking, clamping, etc., and the base 330 cannot move relative to the helmet shell 100 after assembly.

[0043] As shown in Figures 4 and 5, a second hole 331 is provided in the middle of the base 330. At least one first constraint body 332 is provided around the second hole 331. An entrance 333 is provided at the end of the first constraint body 332. At least one limiting protrusion is provided on the base 330. In this embodiment, the limiting protrusions include a first limiting protrusion 334 and a second limiting protrusion 335. The first limiting protrusion 334 is provided on the upper portion of the first constraint body 332 and extends along the axial direction of the second hole 331. The second limiting protrusion 335 is provided on the sidewall of the first constraint body 332 and extends into the interior of the second hole 331.

[0044] As shown in FIG6 , the locking cover 310 includes a cover body 312 and a key unit 311 . The key unit 311 is movably provided on the locking cover 310 . The key unit 311 has a pressed state and a popped-up state.

[0045] Specifically, as shown in FIG6 , the cover body 312 includes an umbrella cover portion (not shown) and an insertion portion 3121. The umbrella cover portion provides a cover body that the wearer can operate by hand, facilitating the wearer's rotation of the locking cover. In this embodiment, the umbrella cover portion is a circular cover body with a mounting slot in the middle for assembling the button unit 311. It is readily apparent that in other embodiments, the umbrella cover portion can also be configured as a triangle, ellipse, polygon, or other shape. The insertion portion 3121 is provided on the side of the umbrella cover portion facing the helmet shell 100. The insertion portion 3121 is configured to pass through the first hole 211 and be inserted into the second hole 331. Among them, the insertion part 3121 is provided with a second constraint body 3122 that cooperates with the first constraint body 332, and a first limit block (not marked in the figure) that cooperates with the limit protrusion. The first limit block is arranged under the umbrella cover part, and a constraint groove 3123 is formed between the first limit block and the second constraint body 3122. The size of the constraint groove 3123 corresponds to the first constraint body 332. During assembly, the constraint groove 3123 is used to accommodate the first constraint body 332 and constrain the first constraint body 332.

[0046] As shown in Figure 6, in this embodiment, the button unit 311 is generally cylindrical in shape. The button unit 311 is movably assembled to the mounting slot in the middle of the cover body 312. The button unit 311 can be switched to a pressed state by pressing toward the helmet shell 100, or switched to a pop-up state by moving away from the helmet shell 100. Specifically, the outward side of the button unit 311 is provided with a pressing portion 3111, which is the specific part that the wearer presses. At least one second limit block 3112 is provided on the side of the button unit 311. When the button unit 311 is in the pressed state, the second limit block 3112 cooperates with the limit protrusion to limit the rotation of the cover body 312.

[0047] Furthermore, as shown in FIG6 , in order to limit the movement path of the key unit 311, corresponding guide structures are provided on the cover 312 and the key unit 311. The guide structure includes a plurality of guide blocks 3125 and guide grooves 3115 that cooperate with each other. In this embodiment, the guide blocks 3125 are provided on the locking cover 310, and the corresponding guide grooves 3115 are provided on the key unit 311. It is easy to imagine that in other embodiments, the guide blocks 3125 and the guide grooves 3115 can also be interchanged, and the same guiding effect can also be achieved. In addition, an avoidance groove 3114 is provided on the key unit 311. The avoidance groove 3114 corresponds to the second constraint body 3122, preventing the key unit 311 from interfering with the second constraint body 3122 during the movement process. At the same time, the avoidance groove 3114 and the second constraint body 3122 cooperate to further enhance the guiding effect.

[0048] As shown in Figures 6 and 7, a locking structure is further provided between the insertion portion 3121 and the key unit 311, and the locking structure is used to keep the key unit 311 in the pressed state after switching to the pressed state. Specifically, the locking structure includes a positioning bar 3113 and a locking block 3124. The positioning bar 3113 is movably provided on the key unit 311, and the locking block 3124 is provided on the insertion portion 3121. Referring to Figure 7, the locking block 3124 is provided with a plurality of slides for the unidirectional movement of the positioning bar 3113. In this embodiment, the locking block 3124 is provided with three slides, namely a first slide 3124a, a second slide 3124b and a third slide 3124c, and the first slide 3124a, the second slide 3124b and the third slide 3124c are connected to each other to form a closed loop. The positioning bar 3113 can move unidirectionally along the first slide 3124a, the second slide 3124b and the third slide 3124c in sequence. Along the moving direction of the positioning bar 3113, the connection between the multiple slides is provided with a step to prevent the positioning bar 3113 from moving in the reverse direction. Specifically, at the connection between the first slide 3124a and the second slide 3124b, the first slide 3124a is higher than the second slide 3124b, forming a first step, and the positioning bar 3113 can enter the second slide 3124b from the first slide 3124a. When the positioning bar 3113 moves in the opposite direction, the step will block the positioning bar 3113 from the second slide 3124b to enter the first slide 3124a, thereby preventing the positioning bar 3113 from moving in the opposite direction; at the connection between the second slide 3124b and the third slide 3124c, the second slide 3124b is higher than the third slide 3124c, forming a second step; at the connection between the first slide 3124a and the third slide 3124c, the third slide 3124c is higher than the first slide 3124a, forming a third step. Furthermore, a first latch is provided on the first slide 3124a, and a second latch is provided on the second slide 3124b. The positioning bar 3113 switches between the first and second latches. When the key unit 311 is in the pop-up state, the positioning bar 3113 stops at the first latch. At this time, if a pressing force is applied to the pressing portion 3111 of the key unit 311, the positioning bar 3113 moves along the first slide 3124a to the second slide 3124b under the action of the pressing force and stops at the second latch. At this time, the key unit 311 is in the pressed state. If a pressing force is applied to the pressing portion 3111 of the key unit 311 again, the positioning bar 3113 moves away from the second latch and enters the third slide 3124c under the action of the pressing force. When the user releases the user's hand, the positioning bar 3113 moves along the third slide 3124c to the first slide 3124a and stops at the first latch. At this time, the key unit 311 returns to the pop-up state.

[0049] Furthermore, a return spring is provided inside the button unit 311. The return spring is preferably a compression spring, and the two ends of the return spring respectively contact the cover body 312 and the button unit 311. The force provided by the return spring causes the locking cover 310 and the button unit 311 to move away from each other. When the positioning bar 3113 leaves the second bayonet and enters the third slide 3124c, the button unit 311 is reset to the pop-up state under the action of the return spring.

[0050] The steps for installing the goggles 200 using the lens mounting assembly 300 of the present invention are as follows:

[0051] S1. Place the goggles 200 in place, with the first hole 211 corresponding to the second hole 331 on the base 330;

[0052] S2. Insert the insertion portion 3121 of the locking cover 310 through the first hole 211 into the second hole 331 along the axial direction of the second hole 331. Simultaneously, insert the second restraining body 3122 into the rear portion of the first restraining body 332 facing the entry opening 333. At this time, the key unit 311 is in the pop-up state.

[0053] S3. Rotate the cover 312 until the first limiting block contacts the first limiting protrusion 334. Then, the second restraining body 3122 moves from the entrance 333 to the back of the first restraining body 332. That is, the second restraining body 3122 enters the restraining groove 3123. The first restraining body 332 and the second restraining body 3122 cooperate to prevent the locking cover 310 from falling out along the axial direction of the second hole 331.

[0054] S4. Press the button unit 311 to switch the button unit 311 to the pressed state. The second limit block 3112 cooperates with the second limit protrusion 335 to limit the rotation of the cover body 312, and locks the position of the second constraint body 3122 on the back of the first constraint body 332. As shown in Figures 8 and 9, the state of the locking cover 310 and the base 330 after the installation is completed.

[0055] The steps for disassembling the goggles 200 are opposite to the above-mentioned installation steps, specifically: first, press the button unit 311 to switch the button unit 311 to the pop-up state and release the lock; then, rotate the cover body 312 until the second restraint body 3122 is facing the entrance 333; finally, pull out the locking cover 310 to remove the goggles 200.

[0056] Furthermore, as shown in Figures 2 to 4, the mask cover 320 is arranged between the base 330 and the locking cover 310. The mask cover 320 can be used to cover the base 330 and the mounting handle 210, thereby ensuring the beauty of the helmet and protecting the base 330 and the mounting handle 210.

[0057] Furthermore, the mask cover plate 320 is provided with a third hole 321, which corresponds to the first hole 211 and the second hole 331. In addition, the mask cover plate 320 is also provided with a support protrusion 322, which supports the umbrella cover portion of the locking cover 310, so that the cover body 312 is slightly away from the mask cover plate 320, making it easier for the wearer to operate the cover body 312 for rotation.

[0058] The helmet of the present invention secures the goggles 200 to the helmet shell 100 via the lens mounting assembly 300. To install the goggles 200, one only needs to insert the insertion portion 3121 of the locking cover 310 through the first hole 211 of the goggles 200 and into the base 330. Then, the locking cover 310 is rotated to mate the first and second restraining bodies 332 and 3122. Finally, the button unit 311 is pressed to switch the button unit 311 to a pressed state, completing the installation. To remove the goggles, the reverse operation is performed: first, the button unit 311 is pressed to switch the button unit 311 to a pop-up state to release the lock. Then, the cover 312 is rotated until the second restraining body 3122 faces the entry opening 333, and finally, the locking cover 310 is removed. Whether installing or removing the goggles 200, the helmet of the present invention can be operated with one hand. The wearer can even perform the aforementioned operations while wearing the helmet, making the operation convenient and practical.

[0059] The above is a specific description of the preferred implementation of the present invention, but the present invention is not limited to the above implementation. Those skilled in the art can also make various equivalent modifications or substitutions under the shared conditions that do not violate the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present invention.

Claims

1. A helmet, characterized in that: include: Helmet shell; Goggles, the goggles are movably arranged in front of the helmet shell, mounting handles are arranged on both sides of the goggles, and the mounting handles are provided with a first hole; A lens mounting assembly, wherein two lens mounting assemblies are provided, and the two lens mounting assemblies are respectively arranged on both sides of the helmet shell, and the lens mounting assemblies correspond to the mounting handle one by one; the lens mounting assembly comprises a base and a locking cover, the base is fixedly arranged on the helmet shell, a second hole is arranged in the middle of the base, at least one first constraint body is arranged around the second hole, an entry port is arranged at the end of the first constraint body, and at least one limiting protrusion is arranged on the base; the locking cover comprises a cover body and a button unit, the cover body comprises an umbrella cover part and an insertion part, the insertion part is used to pass through the first hole and be inserted into the second hole, the insertion part is provided with a second constraint body matched with the first constraint body, the insertion part is provided with a first limiting block matched with the limiting protrusion, the button unit is movably arranged on the locking cover, the button unit has a pressed state and a pop-up state, the button unit is provided with a second limiting block, and when the button unit is in the pressed state, the second limiting block cooperates with the limiting protrusion to limit the rotation of the cover body; During installation, the key unit is in a pop-up state, the insertion portion of the locking cover passes through the first hole along the axial direction of the second hole and is inserted into the second hole, and the second constraint body is inserted into the rear of the first constraint body facing the entry port; Rotate the cover body until the first limit block touches the limit protrusion, and the second constraint body moves from the entrance to the back of the first constraint body, and the first constraint body and the second constraint body cooperate to prevent the locking cover from falling out in the axial direction; press the button unit to switch the button unit to the pressed state, and the second limit block cooperates with the limit protrusion to limit the rotation of the cover body, and lock the position of the second constraint body on the back of the first constraint body; when disassembling, press the button unit to switch the button unit to the pop-up state, release the lock, and then rotate the cover body until the second constraint body is opposite to the entrance, and finally pull out the locking cover.

2. The helmet according to claim 1, characterized in that The limiting protrusion includes a first limiting protrusion and a second limiting protrusion, the first limiting protrusion cooperates with the first limiting block, and the second limiting protrusion cooperates with the second limiting block.

3. The helmet according to claim 2, characterized in that: The first limiting block is arranged on the first restraining body, the first limiting block extends along the axial direction of the second hole, and the first limiting block is arranged below the umbrella cover portion.

4. The helmet according to claim 2, characterized in that: The second limiting protrusion is arranged on the first restraining body, and the second limiting protrusion extends toward the inside of the second hole.

5. The helmet according to claim 1, characterized in that: A locking structure is provided between the insertion portion and the key unit, and the locking structure is used to keep the key unit in the pressed state after being switched to the pressed state.

6. The helmet according to claim 5, characterized in that The locking structure includes a positioning bar and a locking block, the positioning bar is movably arranged on the button unit, the locking block is arranged on the insertion portion, the locking block is provided with a slide for unidirectional movement of the positioning bar, the slide is provided with a first bayonet and a second bayonet, the button unit is pressed to move the positioning bar along the slide, the positioning bar switches between the first bayonet and the second bayonet, when the positioning bar is in the first bayonet, the button unit is in a pop-up state, and when the positioning bar is in the second bayonet, the button unit is in a pressed state.

7. The helmet according to claim 6, characterized in that The locking block is provided with a plurality of slideways, and the plurality of slideways are interconnected to form a closed loop.

8. The helmet according to claim 7, characterized in that Along the moving direction of the positioning bar, the connection between the multiple sections of the slideway is provided with a step to prevent the positioning bar from moving in the reverse direction.

9. A helmet according to any one of claims 1 or 5 to 8, characterized in that: The cover body and the key unit are provided with corresponding guide structures, and the guide structures include a plurality of guide blocks and guide grooves that cooperate with each other.

10. The helmet according to claim 1, characterized in that A mask cover plate is arranged between the base and the locking cover, and the mask cover plate covers the base. A third hole is arranged on the mask cover plate, and the third hole corresponds to the first hole and the second hole.

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