Helmet

Abstract

The utility model discloses a helmet belongs to protective wearing articles. Among them, the helmet includes buffer layer and framework, and buffer layer is equipped with multiple ventilation holes along the thickness direction of buffer layer and is penetrated, and multiple ventilation holes are arranged at intervals, and buffer layer is divided into multiple buffer areas, and framework includes first rib part and second rib part, and first rib part extends along the arrangement direction of multiple buffer areas and passes through multiple buffer areas and multiple ventilation holes, and the partial structure of first rib part is embedded in each buffer area, and second rib part is connected with first rib part, and the whole of second rib part is embedded in buffer area. The utility model improves the overall carrying capacity and structural stability of buffer layer, ensures the safety of helmet when collision occurs, so that the helmet can be worn for a long time or in the scene of violent movement, can provide enough safety protection, and can bring cool and comfortable wearing experience.

Description

Technical Field

[0001] This utility model relates to protective wearables, and in particular to a helmet. Background Technology

[0002] To improve wearing comfort, especially during prolonged wear or use in sports, helmet designs are increasingly focusing on ventilation. Related technologies typically incorporate multiple ventilation holes in the cushioning layer; however, the installation of these holes removes some of the cushioning layer material, resulting in a reduction in the overall strength and impact resistance of the cushioning layer. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a helmet that improves the structural strength and impact resistance of the buffer layer while maintaining ventilation performance.

[0004] A helmet according to a first aspect of the present invention includes: a buffer layer and a frame. The buffer layer has a plurality of ventilation holes extending through the thickness direction of the buffer layer. The plurality of ventilation holes are spaced apart and divide the buffer layer into a plurality of buffer zones. The frame includes a first rib and a second rib. The first rib extends along the arrangement direction of the plurality of buffer zones and passes through the plurality of buffer zones and the plurality of ventilation holes. A portion of the structure of the first rib is embedded in each of the buffer zones. The second rib is connected to the first rib and is entirely embedded in the buffer zone.

[0005] The helmet according to the embodiments of the present invention has at least the following beneficial effects: The helmet of this utility model has ventilation holes in the buffer layer to maintain ventilation performance. Furthermore, a frame is installed in the buffer layer, including a first rib and a second rib. The first rib passes through the ventilation holes to connect multiple separated buffer zones, improving the overall structural integrity of the buffer layer and achieving uniform stress distribution. This avoids stress concentration in weak areas at the edges of the ventilation holes, which could damage the buffer zones, thereby improving the overall load-bearing capacity and structural stability of the buffer layer and ensuring the helmet's safety in the event of a collision. The second rib is completely embedded inside the buffer zone, forming an internal reinforcement structure that enhances the buffer zone's compressive and shear resistance, resolving the contradiction between ventilation and safety. This allows the helmet to provide sufficient safety protection while offering a cool and comfortable wearing experience during prolonged wear or strenuous exercise.

[0006] According to some embodiments of the present invention, along the thickness direction of the buffer layer, the skeleton is disposed between the outer surface and the inner surface of the buffer layer, and the buffer layer is a foamed part integrally foamed with the skeleton. According to some embodiments of the present invention, the first rib includes a first connecting part, a first reinforcing part, and a second reinforcing part. Along the thickness direction of the buffer layer, one end of the first connecting part is connected to the first reinforcing part, and the other end is connected to the second reinforcing part. Along the width direction of the first rib, the width of the first reinforcing part and the width of the second reinforcing part are greater than the width of the first connecting part.

[0007] According to some embodiments of the present invention, the width of the first reinforcing part is a, which satisfies: 2mm≤a≤10mm; And / or, the width of the second reinforcement is b, which satisfies: 2mm≤b≤10mm; And / or, the thickness of the first rib along the thickness direction of the buffer layer is c, satisfying: 2mm≤c≤10mm.

[0008] According to some embodiments of the present invention, the first rib includes a first reinforcing part and a first connecting part. Along the thickness direction of the buffer layer, the first reinforcing part is connected to the outside of the first connecting part, and the two ends of the first reinforcing part protrude from the first connecting part respectively.

[0009] According to some embodiments of the present invention, the first rib includes a first reinforcing part and two second connecting parts, and along the thickness direction of the buffer layer, the two ends of the first reinforcing part are respectively connected to the outer sides of the two second connecting parts.

[0010] According to some embodiments of the present invention, the cross-section of the second rib is rectangular.

[0011] According to some embodiments of the present invention, the ventilation holes extend along a first direction, and the first ribs are provided at intervals along the first direction, with at least two first ribs passing through each ventilation hole.

[0012] According to some embodiments of the present invention, the second rib is provided in multiple ways, and at least one second rib is embedded inside each buffer zone. According to some embodiments of the present invention, a plurality of ventilation holes are spaced apart along a second direction, and the frame includes a plurality of first ribs and a plurality of second ribs. The plurality of first ribs are spaced apart along a first direction, and the first direction and the second direction are arranged at an angle. The first ribs extend along the second direction, and the plurality of second ribs are spaced apart along the second direction. The second ribs extend along the first direction.

[0013] Additional aspects and advantages of this 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

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the structure of a helmet according to an embodiment of the present invention; Figure 2 This is a partial cross-sectional view of a helmet according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the skeleton structure of an embodiment of the present invention; Figure 4 This is a partial cross-sectional view of the first rib embedded in the buffer zone according to an embodiment of the present invention; Figure 5 for Figure 2 A magnified view of a section at point A in the middle; Figure 6 This is a cross-sectional schematic diagram of the first rib according to an embodiment of the present invention; Figure 7 This is a cross-sectional schematic diagram of the first rib of another embodiment of the present invention.

[0015] Icon labels: Buffer layer 100; Ventilation hole 110; Buffer zone 120; Frame 200; first rib 210; first connecting part 211; first reinforcing part 212; second reinforcing part 213; second connecting part 214; second rib 220; third rib 230. Detailed Implementation

[0016] The embodiments of this utility model 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 this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, 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. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0019] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0020] In related technologies, helmet structures typically include a rigid outer shell and a buffer layer for absorbing impact energy. The buffer layer is the core component for energy absorption and is usually made of lightweight, high-energy-efficiency foam plastics such as expanded polystyrene and expanded polypropylene. When the helmet is impacted, the buffer layer absorbs and disperses the impact energy through its own deformation, thereby slowing down the transmission of external force to the head and achieving a protective effect.

[0021] To improve wearing comfort, existing helmets often incorporate multiple ventilation holes in the cushioning layer. However, the installation of these holes inevitably removes some of the cushioning material, causing the overall structure of the cushioning layer to break down. The larger and more numerous the ventilation holes, the lower the helmet's structural integrity and impact resistance. In the event of a severe impact, the helmet can easily crack along the edges of the ventilation holes, or even shatter into several pieces, thus losing its ability to continuously protect the head.

[0022] To address the aforementioned problems, some embodiments of this utility model propose a helmet that improves the structural strength and impact resistance of the buffer layer 100 while maintaining ventilation performance. See details below. Figures 1 to 7 The helmet is shown in the illustration.

[0023] Reference Figure 1 As shown, in this embodiment of the invention, the helmet includes a buffer layer 100 and a frame 200. The buffer layer 100 is an energy-absorbing layer covering the inner side of the helmet shell, specifically made of foamed polyurethane material, used to disperse energy through deformation during impact. In this embodiment, to maintain ventilation performance, the buffer layer 100 has multiple ventilation holes 110 extending along its thickness direction. The ventilation holes 110 serve as airflow channels connecting the external space and the interior of the helmet, promoting air circulation. The multiple ventilation holes 110 are spaced apart, dividing the buffer layer 100 into multiple buffer zones 120. In other words, the buffer layer 100 is divided into multiple independent deformation regions by the ventilation holes 110.

[0024] Combination Figure 2 and Figure 3It is understood that, in this embodiment of the invention, the frame 200 includes a first rib 210 and a second rib 220, wherein the first rib 210 extends along the arrangement direction of the plurality of buffer zones 120 and passes through the plurality of buffer zones 120 and the plurality of ventilation holes 110, thereby forming a continuous support through the plurality of buffer zones 120. In this embodiment, a portion of the structure of the first rib 210 is embedded in each buffer zone 120.

[0025] Continue to refer to Figure 2 and Figure 3 As shown, in this embodiment of the invention, the second rib 220 is connected to the first rib 210, and the second rib 220 is entirely embedded within the buffer zone 120. In this embodiment, the second rib 220 and the first rib 210 are arranged at an angle, thereby providing reinforcement to the buffer zone 120 in different directions.

[0026] Specifically, in this embodiment of the invention, a second rib 220 is embedded inside each buffer zone 120 to form local reinforcement. A first rib 210 extends laterally through each buffer zone 120, and its embedded portion mechanically interlocks with the buffer layer 100 material. Upon impact, the rib structure transfers the load to adjacent buffer zones 120. While retaining airflow channels, the ventilation hole 110 has an annular reinforcing rib formed by the structure through which the first rib 210 passes, effectively preventing cracking at the hole edge. The grid distribution of the skeleton 200 allows impact energy to diffuse evenly along the network formed by the first rib 210 and the second rib 220, avoiding stress concentration around the ventilation hole 110. It can be understood that this embodiment of the invention transforms the ventilation hole 110 into a mechanical transmission node through the skeleton 200, maintaining ventilation efficiency while utilizing the first rib 210 and the second rib 220 to compensate for the strength of areas lacking material.

[0027] The helmet of this embodiment maintains ventilation performance by opening ventilation holes 110 in the buffer layer 100. Furthermore, a frame 200 is provided within the buffer layer 100, comprising a first rib 210 and a second rib 220. The first rib 210 penetrates the ventilation holes 110, connecting the multiple separated buffer zones 120, thus improving the overall structural integrity of the buffer layer 100 and achieving uniform stress distribution. This prevents stress concentration in the weak areas at the edges of the ventilation holes 110, which could damage the buffer zones 120, thereby improving the overall load-bearing capacity and structural stability of the buffer layer 100 and ensuring helmet safety in the event of a collision. The second rib 220 is fully embedded inside the buffer zones 120, forming an internal reinforcement structure for the buffer zones 120, thereby enhancing their compressive and shear resistance. This resolves the conflict between ventilation and safety, allowing the helmet to provide sufficient safety protection while offering a cool and comfortable wearing experience during prolonged wear or strenuous exercise.

[0028] Reference Figure 1 and Figure 2 As shown in this embodiment of the invention, along the thickness direction of the buffer layer 100, the skeleton 200 is disposed between the outer and inner surfaces of the buffer layer 100, and the buffer layer 100 is a foamed component integrally foamed with the skeleton 200. Specifically, the skeleton 200 being disposed between the outer and inner surfaces of the buffer layer 100 means that the skeleton 200 is centrally arranged inside the buffer layer 100 along the thickness direction. This can be achieved by pre-embedding the skeleton 200 in the foaming mold using injection molding, so that the skeleton 200 is encased inside the buffer layer 100. This arrangement avoids the skeleton 200 being exposed, which could affect the surface flatness of the buffer layer 100, while simultaneously improving the overall resistance to deformation through internal support.

[0029] Reference Figure 4 As shown in the embodiment of this utility model, the first rib 210 includes a first connecting part 211, a first reinforcing part 212, and a second reinforcing part 213. Along the thickness direction of the buffer layer 100, one end of the first connecting part 211 is connected to the first reinforcing part 212, and the other end is connected to the second reinforcing part 213. Along the width direction of the first rib 210, the width of the first reinforcing part 212 and the width of the second reinforcing part 213 are greater than the width of the first connecting part 211.

[0030] Specifically, in this embodiment of the invention, the first connecting portion 211 is the middle part connecting the first reinforcing portion 212 and the second reinforcing portion 213, and can be implemented using a narrow plate-like structure. The first reinforcing portion 212 refers to the widened portion located outside the first connecting portion 211, used to enhance the bending resistance of the rib under lateral loads. The second reinforcing portion 213 refers to the widened portion located inside the first connecting portion 211, and its construction can be symmetrical with the first reinforcing portion 212 to form a double-sided support structure.

[0031] Understandably, referring to Figure 4 As shown in this embodiment of the invention, the cross-section of the first rib 210 is I-shaped. Specifically, when the buffer layer 100 is subjected to an impact load, the first rib 210 of the I-shaped structure disperses stress through its widened first reinforcing portion 212 and second reinforcing portion 213, while the first connecting portion 211 maintains structural continuity in the thickness direction. This construction method allows the rib to provide effective support through the widened portion when subjected to impacts from different directions, while maintaining the through space of the ventilation hole 110 through the narrow first connecting portion 211.

[0032] Continue to refer to Figure 4As shown, in this embodiment of the invention, the width of the first reinforcing part 212 is 'a', satisfying: 2mm ≤ a ≤ 10mm; and / or, the width of the second reinforcing part 213 is 'b', satisfying: 2mm ≤ b ≤ 10mm; and / or, the thickness of the first rib 210 along the thickness direction of the buffer layer 100 is 'c', satisfying: 2mm ≤ c ≤ 10mm. It can be understood that both the first reinforcing part 212 and the second reinforcing part 213 extend along the arrangement direction of the plurality of ventilation holes 110; therefore, the length direction of the first reinforcing part 212 and the second reinforcing part 213 is the arrangement direction of the plurality of ventilation holes 110. In one example, the length direction of the first reinforcing part 212 and the second reinforcing part 213 is along the left-right direction of the helmet, and the width direction of the first reinforcing part 212 and the second reinforcing part 213 is along the front-back direction of the helmet.

[0033] It should be noted that the width of the first reinforcing part 212 and the width of the second reinforcing part 213 may be the same or different; this embodiment does not impose any limitation on this. In this embodiment, by reasonably limiting the range of values ​​for a and b, it is ensured that the first rib 210 has sufficient strength without weakening the strength of the buffer zone 120 due to excessive width. Furthermore, by reasonably limiting the range of values ​​for c, the structural stability of the first rib 210 is ensured, and the weakening of the buffer zone 120 due to excessive length is also avoided.

[0034] Reference Figure 6 As shown, in another example, the first rib 210 includes a first reinforcing portion 212 and a first connecting portion 211. Along the thickness direction of the buffer layer 100, the first reinforcing portion 212 is connected to the outside of the first connecting portion 211, and both ends of the first reinforcing portion 212 protrude from the first connecting portion 211. Specifically, in this embodiment, the cross-section of the first rib 210 is T-shaped, so as to... Figure 6 Taking the cross-section of the buffer layer 100 as an example, the first reinforcing part 212 extends along the first direction, and the first connecting part 211 extends along the thickness direction of the buffer layer 100.

[0035] Reference Figure 7 As shown, in another example, the first rib 210 includes a first reinforcing portion 212 and two second connecting portions 214. Along the thickness direction of the buffer layer 100, the two ends of the first reinforcing portion 212 are respectively connected to the outer sides of the two second connecting portions 214, and the two second connecting portions 214 are spaced apart along a first direction. Specifically, in this embodiment, the cross-section of the first rib 210 is a downward-opening C-shape, so as to... Figure 7 Taking the cross-section as an example, the first reinforcing part 212 extends along the first direction, and the second connecting part 214 extends along the thickness direction of the buffer layer 100.

[0036] Reference Figure 5As shown, in this embodiment of the invention, the cross-section of the second rib 220 is rectangular. It should be noted that a rectangular cross-section means that the second rib 220 has a geometric shape where all four sides are straight lines and adjacent sides are perpendicular on a plane perpendicular to the thickness direction of the buffer layer 100. It is understood that a rectangular cross-section can provide a uniform stress distribution and improve bending resistance.

[0037] Specifically, when the second rib 220 is embedded inside the buffer zone 120, its rectangular cross-section allows the four right-angled sides of the rib to form a stable support surface when subjected to impact loads, thereby uniformly transmitting the impact force along the thickness and transverse direction of the buffer layer 100 to adjacent areas. The long side of the rectangular cross-section can be arranged along the force direction of the buffer zone 120 to resist deformation in different directions, while avoiding local stress concentration caused by irregular cross-sectional shape.

[0038] Reference Figure 2 and Figure 3 As shown in this embodiment of the invention, the ventilation holes 110 extend along a first direction, and multiple first ribs 210 are spaced apart along the first direction. At least two first ribs 210 pass through each ventilation hole 110. The first direction refers to the length direction of the ventilation holes 110, which can be achieved by extending the ventilation holes 110 along the front-to-back direction of the helmet, which is consistent with the airflow direction when the helmet is worn.

[0039] Specifically, the ventilation opening 110 is configured to extend along a first direction to form an elongated channel, with multiple first ribs 210 arranged parallel to this extension direction. Each ventilation opening 110 is transversely penetrated by at least two first ribs 210, which contact and support the opening wall as they pass through the ventilation opening 110. After passing through the ventilation opening 110, the first ribs 210 continue to extend to an adjacent buffer zone 120, forming a continuous support frame. This arrangement allows the ventilation opening 110 to maintain its airflow channel function while compensating for material loss due to the opening through its internal intersecting rib structure.

[0040] Reference Figure 3 and Figure 5 As shown, in this embodiment of the present invention, multiple second ribs 220 are provided, and at least one second rib 220 is embedded inside each buffer zone 120. Specifically, in this embodiment, the second ribs 220 and the buffer zone 120 extend in the same direction, both extending along the second direction. It can be understood that the second ribs 220 extend inside the buffer layer 100, forming a cross-support structure with the first ribs 210. When subjected to impact, the rigidity of the ribs transmits and disperses stress, preventing the buffer zone 120 from collapsing locally due to the weakening of the ventilation holes 110. At the same time, the design of the second ribs 220 embedded inside the buffer layer 100 does not affect the airflow path of the ventilation holes 110.

[0041] Reference Figure 2 and Figure 3 As shown in the embodiment of this utility model, a plurality of ventilation holes 110 are spaced apart along the second direction, and the frame 200 includes a plurality of first ribs 210 and a plurality of second ribs 220. The plurality of first ribs 210 are spaced apart along the first direction, and the first direction and the second direction are arranged at an angle. The first ribs 210 extend along the second direction, and the plurality of second ribs 220 are spaced apart along the second direction. The second ribs 220 extend along the first direction.

[0042] Specifically, ventilation holes 110 are arranged at intervals along the second direction to form longitudinal channels. First ribs 210 extend along the second direction and pass through multiple ventilation holes 110, while multiple first ribs 210 are also spaced at intervals along the first direction. Second ribs 220 extend along the first direction and are spaced at intervals along the second direction, forming a cross-grid with the first ribs 210. The extension directions of the first ribs 210 and the second ribs 220 form an angle, for example, they can be perpendicular, so that the skeleton 200 forms a two-way support network within the buffer layer 100. When an impact force is applied to the buffer layer 100, the cross-arranged first ribs 210 and second ribs 220 can work together to disperse stress, compensating for the strength loss caused by the openings through the multi-directional skeleton 200 structure while maintaining the number of ventilation holes 110.

[0043] Reference Figure 2 and Figure 3 As shown, in this embodiment of the invention, the frame 200 further includes a third rib 230, which is arranged circumferentially along the buffer layer 100. The third rib 230 is connected to the ends of the first rib 210 and the second rib 220, respectively. The third rib 230 is a support structure surrounding the outer edge of the buffer layer 100, and can be connected to the first rib 210 and the second rib 220 by injection molding or hot-press welding to enhance the overall structural stability of the frame 200. In this embodiment, the third rib 230 is distributed in a ring along the edge of the buffer layer 100, and the third rib 230 can constrain the deformation range of the buffer layer 100 under impact.

[0044] Specifically, the third rib 230 forms a continuous support ring along the outer edge of the buffer layer 100, connecting the dispersed first ribs 210 and second ribs 220 into an integral frame. When an external impact acts on the buffer layer 100, the third rib 230, through its ring structure, evenly distributes the load to the adjacent first ribs 210 and second ribs 220, avoiding localized stress concentration. Simultaneously, the circumferentially arranged third rib 230 restricts the outward expansion of the buffer layer 100 under compression, preventing excessive deformation of the ventilation holes 110 from affecting the stability of the airflow channel.

[0045] In this embodiment of the utility model, the skeleton 200 is a one-piece molded plastic part. The one-piece molded plastic part refers to the skeleton 200 being made into a single continuous structure by injection molding or 3D printing. Specifically, it can be made of materials such as polycarbonate and nylon through mold injection molding. This manufacturing method can eliminate connection gaps and enhance structural integrity.

[0046] Specifically, the skeleton 200 is formed into a continuous integral structure through a one-piece molding process, with no seams formed by splicing or assembly inside. During the assembly process of the buffer layer 100 and the skeleton 200, the skeleton 200 is completely embedded inside the foamed buffer layer 100, and the first rib 210 and the second rib 220 are evenly distributed within the multiple buffer zones 120 formed by the ventilation holes 110. Because the skeleton 200 is continuously molded from a single material, its mechanical properties remain uniform in spatial distribution, thereby effectively dispersing stress when subjected to external impact. Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A helmet, characterized in that, include: A buffer layer is provided with a plurality of ventilation holes that penetrate along the thickness direction of the buffer layer. The plurality of ventilation holes are spaced apart and divide the buffer layer into a plurality of buffer zones. The skeleton includes a first rib and a second rib. The first rib extends along the arrangement direction of the plurality of buffers and passes through the plurality of buffers and the plurality of ventilation holes. A portion of the structure of the first rib is embedded in each of the buffers. The second rib is connected to the first rib and is entirely embedded in the buffer.

2. The helmet according to claim 1, characterized in that, Along the thickness direction of the buffer layer, the skeleton is disposed between the outer surface and the inner surface of the buffer layer, and the buffer layer is a foamed part integrally foamed with the skeleton.

3. The helmet according to claim 1, characterized in that, The first rib includes a first connecting part, a first reinforcing part, and a second reinforcing part. Along the thickness direction of the buffer layer, one end of the first connecting part is connected to the first reinforcing part, and the other end is connected to the second reinforcing part. Along the width direction of the first rib, the width of the first reinforcing part and the width of the second reinforcing part are greater than the width of the first connecting part.

4. The helmet according to claim 3, characterized in that, The width of the first reinforcing part is 'a', which satisfies: 2mm ≤ a ≤ 10mm; And / or, the width of the second reinforcement is b, which satisfies: 2mm≤b≤10mm; And / or, the thickness of the first rib along the thickness direction of the buffer layer is c, satisfying: 2mm≤c≤10mm.

5. The helmet according to claim 1, characterized in that, The first rib includes a first reinforcing part and a first connecting part. Along the thickness direction of the buffer layer, the first reinforcing part is connected to the outside of the first connecting part, and the two ends of the first reinforcing part protrude from the first connecting part respectively.

6. The helmet according to claim 1, characterized in that, The first rib includes a first reinforcing part and two second connecting parts. Along the thickness direction of the buffer layer, the two ends of the first reinforcing part are respectively connected to the outside of the two second connecting parts.

7. The helmet according to claim 1, characterized in that, The cross-section of the second rib is rectangular.

8. The helmet according to claim 1, characterized in that, The ventilation holes extend along a first direction, and the first ribs are provided at intervals along the first direction, with at least two first ribs passing through each ventilation hole.

9. The helmet according to claim 1, characterized in that, The second rib is provided in multiple parts, and at least one second rib is embedded inside each of the buffer zones.

10. The helmet according to claim 1, characterized in that, The plurality of ventilation holes are spaced apart along a second direction. The frame includes a plurality of first ribs and a plurality of second ribs. The plurality of first ribs are spaced apart along a first direction. The first direction and the second direction are arranged at an angle. The first ribs extend along the second direction. The plurality of second ribs are spaced apart along the second direction. The second ribs extend along the first direction.

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