A helmet airbag arrangement

Abstract

The utility model discloses a helmet air bag structure relates to the technical field of helmet's gasket or internal component, including side support part and middle support part, side support part connects reinforcing support part, and the reinforcing support part is distributed with several compaction strips on side support part and middle support part, and the compaction strip is staggered distribution, and the compaction strip center is the bag part, and the side support part is along the edge and is in the wavy shape, the utility model discloses in view of the few of existing helmet air bag covering surface, the high production cost problem, the utility model discloses the helmet air bag is plane before processing, and then is inserted into the helmet after the inflation is completed. This design makes the air bag more easily produce and manufacture, can better satisfy the demand of large -scale production.

Description

Technical Field

[0001] This utility model relates to the technical field of helmet pads or internal components, and in particular to a helmet airbag structure. Background Technology

[0002] Traditional helmets, in pursuit of lightweight design and ventilation, are often compact in shape, typically covering only the top and back of the head. This leaves critical areas such as the temples, above the ears, and back of the neck exposed and lacking effective protection. In the event of an accidental collision or lateral impact, these exposed areas are highly susceptible to serious injury. Therefore, there is a need for a helmet airbag that extends directly into the helmet to enhance both comfort and protection, and the airbag must also incorporate a leak-proof design.

[0003] In the prior art, patent publication number CN222509497U discloses a helmet with an earphone airbag, which includes a helmet. The inner side of the helmet is symmetrically bonded with inflatable bodies, and earphone bodies are bonded to the adjacent end faces of the two inflatable bodies. By adjusting the air intake of the inflatable bodies, the expansion amplitude of the inflatable bodies is changed, thereby adjusting the distance between the two earphone bodies to adjust the headband force after the earphone bodies are worn. The helmet of this patent has a small coverage area, poor head protection ability, and no anti-leakage structure. Utility Model Content

[0004] The purpose of this invention is to solve the problems of limited coverage and high production costs of existing helmet airbags. The airbag of this invention is flat before processing and is inserted into the helmet after inflation, which can meet the requirements of mass production.

[0005] Another objective of this invention is to solve the problem of air leakage in existing helmet airbags. The inflation port of this invention adopts a cross-shaped peak hole, which has a certain degree of elasticity and is not easy to leak air, resulting in a better overall sealing effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a helmet airbag structure, including a side support part and a middle support part, the side support part being connected to a reinforcing support part, and a plurality of compaction strips distributed on the side support part, the middle support part, and the reinforcing support part, the compaction strips being staggered, the center of the compaction strips being the airbag part, and the edge of the side support part being wavy.

[0007] Preferably, the side supports, the middle supports, and the reinforcing supports are located near each other, and the slots are triangular. The slots facilitate the folding of the entire helmet airbag structure.

[0008] Preferably, the helmet airbag structure is a symmetrical structure.

[0009] Preferably, one side of the side support is an air inlet, and the air inlet is circular.

[0010] Preferably, the inflation port includes a first support ring and a second support ring, with a hollow annular groove at the center of both the first and second support rings. The hollow annular groove increases the overall strength of the inflation port.

[0011] Preferably, the bottom of the inflation port is a base, and the center of the base has a bulge with a cross-shaped slit at its center. The cross-shaped slit has a certain degree of elasticity. When the inflation device enters, the cross-shaped slit is opened, and when the inflation device is removed, the cross-shaped slit closes, thereby reducing gas loss.

[0012] Preferably, the bottom of the inflation port has inner grooves on both sides. These inner grooves increase the overall strength of the inflation port. Preferably, the upper end of the inflation port is a ring-shaped closed ring, the center of which is a circular hole, and the inner edge of the closed ring is an arc-shaped protrusion that mates with the sealing part. When the sealing part is pressed into the circular hole, it seals the entire inflation port.

[0013] Preferably, the sealing part includes a connecting seat and a lifting opening, the lifting opening being an empty hole. The lifting opening seals the removal and insertion of the sealing part.

[0014] Preferably, the thickness of the connector gradually decreases towards both ends, and the outer edge of the connector is an arc-shaped groove that matches the arc-shaped protrusion on the inner edge of the closed ring.

[0015] Compared with existing technologies, the advantages of this invention are as follows: Addressing the problems of limited coverage and high production costs associated with existing helmet airbags, the airbag in this invention is flat before processing and is inserted into the helmet after inflation. This design makes the airbag easier to manufacture and better meets the needs of large-scale production.

[0016] This invention addresses the problem of air leakage in existing helmet airbags by improving the inflation port with a flexible cross-shaped perforation structure. This structure effectively enhances sealing performance, reducing the likelihood of leakage and resulting in a better overall airtight seal for the airbag. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the inside of the air inlet of this utility model.

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Side support; 2. Slit hole; 3. Reinforcing support; 4. Inflation port; 41. First support ring column; 42. Second support ring column; 43. Hollow ring groove; 44. Inner groove; 45. Base; 46. Protrusion; 47. Cross-shaped slit hole; 48. Closing ring; 49. Arc-shaped protrusion; 5. Middle support; 6. Sealing part; 61. Lifting port; 62. Connecting seat; 63. Arc-shaped groove; 7. Compacting strip; 8. Bag part. Detailed Implementation

[0021] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings. The described embodiments are only some embodiments of this utility model, and not all embodiments.

[0022] Example 1: Refer to Figures 1 to 3 This invention relates to a helmet airbag structure, whose innovative design focuses on improving coverage, optimizing manufacturing processes, and enhancing airtightness. The airbag structure is planar in its uninflated state, greatly simplifying the manufacturing process and facilitating large-scale industrial production. After inflation, the planar structure can be easily inserted into specific cavities within the helmet, forming an effective cushioning and protective layer. The following detailed description, in conjunction with the accompanying drawings, of the various components of this helmet airbag structure, their connections, and specific implementation methods.

[0023] The core support frame of the helmet's airbag structure mainly consists of side support 1 and central support 5. After the airbag is inflated, the side support 1 primarily corresponds to the two sides of the user's head, and its design directly affects the coverage and fit of the sides. A key design detail is that the edges of the side support 1 are intentionally designed with a wavy profile. This non-linear edge shape not only increases the flexibility of contact between the airbag and the helmet liner and the user's head, helping to disperse impact force, but also better adapts to changes in head shape after inflation, reducing local pressure points and improving wearing comfort. Closely connected to the side support 1 is the reinforcing support 3. As a reinforcing extension of the side support 1, the reinforcing support 3 is mainly distributed in areas of the airbag structure that require additional stiffness and stability, such as connection points or structural bends that may bear significant tension. Its presence effectively prevents the airbag from over-expanding or deforming in these areas after inflation, ensuring the overall structural stability and support strength.

[0024] To optimize the internal pressure distribution of the airbag after inflation, prevent excessive local inflation that could create a balloon effect, and guide the airbag to unfold according to a pre-defined three-dimensional shape, the structure features several compaction strips 7 regularly distributed on the surfaces of the side support 1, the central support 5, and the reinforcing support 3. These compaction strips 7 are essentially linear adhesive or pressed areas formed through heat sealing, high-frequency welding, or other specific processes. They are not randomly arranged but rather in a staggered layout. This staggered distribution, similar to a mesh structure, creates a series of interconnected and strong constraint bands inside the airbag, thus dividing the entire airbag surface into multiple smaller, more controllable units. At the center of each area formed by the staggered compaction strips 7, there is a bladder 8. The bladder 8 is the main expansion space of the airbag during inflation. The staggered constraint of the compaction strips 7 ensures that each bladder 8 expands uniformly and orderly during inflation, collectively constructing a three-dimensional protective airbag that possesses both good cushioning performance and maintains overall structural stability.

[0025] In specific areas where the main components, such as the side support 1, the middle support 5, and the reinforcing support 3, are close to or connected to each other, slots 2 are provided. Specifically, the slots 2 are designed in a triangular shape. The triangular slots 2 have specific structural advantages: firstly, the stability of the triangle helps to disperse stress at the connection points, reducing the risk of tearing during repeated inflation and deflation or impact; secondly, this specific shape of the slots 2 acts like a hinge when the airbag is in an uninflated, flat state, greatly facilitating the folding of the entire helmet airbag structure. When folding, the structure can naturally bend along the edges of these triangular slots 2, allowing the flattened airbag to be folded into a smaller volume, facilitating packaging, transportation, and pre-placement inside the helmet. Furthermore, from the overall structural layout, the helmet airbag structure is designed as a symmetrical structure. This symmetry not only makes the production process, such as mold making, material cutting, and welding positioning, simpler and more uniform, reducing production costs and complexity, but also ensures that the airbag can evenly cover both sides of the user's head after inflation, providing a balanced protective effect.

[0026] To enable the airbag to inflate, a dedicated inflation port 4 is provided on one side of the side support 1. The inflation port 4 is circular in shape, which facilitates the even distribution of stress and the installation of sealing components. The inflation port 4 itself is a multi-layered, composite structure designed to ensure ease of inflation, structural robustness, and long-term airtightness. Its structure mainly includes: a first support ring column 41 and a second support ring column 42. These two ring columns are arranged concentrically, and the area between them forms a hollow annular groove 43. The hollow annular groove 43 is not simply a blank space; it actually acts as a reinforcing rib, significantly increasing the deformation resistance and overall structural strength of the entire inflation port 4 area under inflation pressure, preventing collapse or damage around the inflation port.

[0027] The bottom of the inflation port 4 is the base 45, which forms the basis for connecting the inflation port to the airbag body. At the center of the base 45, there is a raised bump 46. At the center of the bump 46 is the key component for achieving airtightness—the cross-shaped slit hole 47. The cross-shaped slit hole 47 is made of a highly elastic material such as a specific type of silicone or thermoplastic polyurethane, and its shape resembles an elastic valve cut into a cross shape. In the non-inflated state, the four valves of the cross-shaped slit hole 47 close tightly under their own elasticity, forming an effective seal. When the inflation head of an external inflation device is inserted, the cross-shaped slit hole 47 is opened, allowing gas to flow into the airbag. Once the inflation device is removed, the elastic memory of the cross-shaped slit hole 47 causes it to quickly return to its closed state, thereby greatly reducing gas leakage and improving the airbag's pressure-holding capacity and long-term reliability. To further enhance the structural stability of the bottom of the inflation port 4, inner grooves 44 are also machined on both sides of the bottom of the base 45. These inner grooves 44 can be regarded as a structural reinforcement design, which effectively resists the torsion or pressure that may be generated during inflation and use by increasing the material stiffness and bending section modulus of this area.

[0028] At the upper end of the inflation port 4, there is an annular sealing ring 48. The center of the sealing ring 48 is a circular hole, which is used to accommodate the independent sealing part 6 after inflation. The inner edge of the sealing ring 48 is designed as a special arc-shaped protrusion 49. This arc-shaped protrusion 49 fits precisely with the corresponding structure on the sealing part 6 to form a mechanically sealed pair that can be repeatedly opened and closed.

[0029] The sealing part 6, as an independent sealing plug, is also meticulously designed. It includes a connecting seat 62 and a pull-out port 61 located at the top of the connecting seat. The pull-out port 61 is a through-hole, its primary function being to provide a user-friendly operating point. Users can easily remove the sealing part 6 from the inflation port 4 for inflation by hooking or pinching the pull-out port 61 with their fingers or simple tools, or accurately press it into the sealing position after inflation. The connecting seat 62 is also carefully designed, with the greatest thickness at its center, gradually narrowing towards both ends to form a near-streamlined profile. This gradual thickness design facilitates a smooth transition when the sealing part 6 is pressed in and pulled out, reducing resistance. An arc-shaped groove 63 is formed on the outer edge of the connecting seat 62. The size and shape of this arc-shaped groove 63 precisely match the arc-shaped protrusion 49 on the inner edge of the sealing ring 48. When the sealing part 6 is pressed into the circular hole at the upper end of the inflation port 4, the arc-shaped groove 63 and the arc-shaped protrusion 49 engage with each other to form a tight interference fit or snap-fit ​​seal. This mechanical interlocking structure becomes even tighter under the pressure of the internal gas, thus providing an extremely reliable double seal at the top of the inflation port 4, which, together with the cross-shaped slit hole 47 at the bottom, constitutes a multi-layered leak-proof guarantee.

[0030] Example 2: Refer to Figures 1 to 3 A helmet airbag structure is disclosed, the core support frame of which is mainly composed of side support parts 1 and central support parts 5. After the airbag is inflated, the side support parts 1 mainly correspond to the two sides of the user's head, and their design directly affects the coverage and fit of the sides. A key design detail is that the edges of the side support parts 1 are intentionally designed with a wavy profile. This non-linear edge shape not only increases the flexibility of the contact between the airbag and the helmet liner and the user's head, helping to disperse impact force, but also better adapts to changes in head shape after inflation, reducing local pressure points and improving wearing comfort. Closely connected to the side support parts 1 is a reinforcing support part 3. As a reinforcing extension of the side support parts 1, the reinforcing support parts 3 are mainly distributed in areas of the airbag structure that require additional stiffness and stability, such as connection points or structural bends that may bear significant tension. Its presence effectively prevents the airbag from over-expanding or deforming in these areas after inflation, ensuring the overall structural stability and support strength.

[0031] To optimize the internal pressure distribution of the airbag after inflation, prevent excessive local inflation that could create a balloon effect, and guide the airbag to unfold according to a pre-defined three-dimensional shape, the structure features several compaction strips 7 regularly distributed on the surfaces of the side support 1, the central support 5, and the reinforcing support 3. These compaction strips 7 are essentially linear adhesive or pressed areas formed through heat sealing, high-frequency welding, or other specific processes. They are not randomly arranged but rather in a staggered layout. This staggered distribution, similar to a mesh structure, creates a series of interconnected and strong constraint bands inside the airbag, thus dividing the entire airbag surface into multiple smaller, more controllable units. At the center of each area formed by the staggered compaction strips 7, there is a bladder 8. The bladder 8 is the main expansion space of the airbag during inflation. The staggered constraint of the compaction strips 7 ensures that each bladder 8 expands uniformly and orderly during inflation, collectively constructing a three-dimensional protective airbag that possesses both good cushioning performance and maintains overall structural stability.

[0032] In specific areas where the main components, such as the side support 1, the middle support 5, and the reinforcing support 3, are close to or connected to each other, slots 2 are provided. Specifically, the slots 2 are designed in a triangular shape. The triangular slots 2 have specific structural advantages: firstly, the stability of the triangle helps to disperse stress at the connection points, reducing the risk of tearing during repeated inflation and deflation or impact; secondly, this specific shape of the slots 2 acts like a hinge when the airbag is in an uninflated, flat state, greatly facilitating the folding of the entire helmet airbag structure. When folding, the structure can naturally bend along the edges of these triangular slots 2, allowing the flattened airbag to be folded into a smaller volume, facilitating packaging, transportation, and pre-placement inside the helmet. Furthermore, from the overall structural layout, the helmet airbag structure is designed as a symmetrical structure. This symmetry not only makes the production process, such as mold making, material cutting, and welding positioning, simpler and more uniform, reducing production costs and complexity, but also ensures that the airbag can evenly cover both sides of the user's head after inflation, providing a balanced protective effect.

[0033] To enable the airbag to inflate, a dedicated inflation port 4 is provided on one side of the side support 1. The inflation port 4 is circular in shape, which facilitates the even distribution of stress and the installation of sealing components. The inflation port 4 itself is a multi-layered, composite structure designed to ensure ease of inflation, structural robustness, and long-term airtightness. Its structure mainly includes: a first support ring column 41 and a second support ring column 42. These two ring columns are arranged concentrically, and the area between them forms a hollow annular groove 43. The hollow annular groove 43 is not simply a blank space; it actually acts as a reinforcing rib, significantly increasing the deformation resistance and overall structural strength of the entire inflation port 4 area under inflation pressure, preventing collapse or damage around the inflation port.

[0034] The bottom of the inflation port 4 is the base 45, which forms the basis for connecting the inflation port to the airbag body. At the center of the base 45, there is a raised bump 46. At the center of the bump 46 is the key component for achieving airtightness—the cross-shaped slit hole 47. The cross-shaped slit hole 47 is made of a highly elastic material such as a specific type of silicone or thermoplastic polyurethane, and its shape resembles an elastic valve cut into a cross shape. In the non-inflated state, the four valves of the cross-shaped slit hole 47 close tightly under their own elasticity, forming an effective seal. When the inflation head of an external inflation device is inserted, the cross-shaped slit hole 47 is opened, allowing gas to flow into the airbag. Once the inflation device is removed, the elastic memory of the cross-shaped slit hole 47 causes it to quickly return to its closed state, thereby greatly reducing gas leakage and improving the airbag's pressure-holding capacity and long-term reliability. To further enhance the structural stability of the bottom of the inflation port 4, inner grooves 44 are also machined on both sides of the bottom of the base 45. These inner grooves 44 can be regarded as a structural reinforcement design, which effectively resists the torsion or pressure that may be generated during inflation and use by increasing the material stiffness and bending section modulus of this area.

[0035] At the upper end of the inflation port 4, there is an annular sealing ring 48. The center of the sealing ring 48 is a circular hole, which is used to accommodate the independent sealing part 6 after inflation. The inner edge of the sealing ring 48 is designed as a special arc-shaped protrusion 49. This arc-shaped protrusion 49 fits precisely with the corresponding structure on the sealing part 6 to form a mechanically sealed pair that can be repeatedly opened and closed.

[0036] The sealing part 6, as an independent sealing plug, is also meticulously designed. It includes a connecting seat 62 and a pull-out port 61 located at the top of the connecting seat. The pull-out port 61 is a through-hole, its primary function being to provide a user-friendly operating point. Users can easily remove the sealing part 6 from the inflation port 4 for inflation by hooking or pinching the pull-out port 61 with their fingers or simple tools, or accurately press it into the sealing position after inflation. The connecting seat 62 is also carefully designed, with the greatest thickness at its center, gradually narrowing towards both ends to form a near-streamlined profile. This gradual thickness design facilitates a smooth transition when the sealing part 6 is pressed in and pulled out, reducing resistance. An arc-shaped groove 63 is formed on the outer edge of the connecting seat 62. The size and shape of this arc-shaped groove 63 precisely match the arc-shaped protrusion 49 on the inner edge of the sealing ring 48. When the sealing part 6 is pressed into the circular hole at the upper end of the inflation port 4, the arc-shaped groove 63 and the arc-shaped protrusion 49 engage with each other to form a tight interference fit or snap-fit ​​seal. This mechanical interlocking structure becomes even tighter under the pressure of the internal gas, thus providing an extremely reliable double seal at the top of the inflation port 4, which, together with the cross-shaped slit hole 47 at the bottom, constitutes a multi-layered leak-proof guarantee.

[0037] Compared with the prior art, the present invention has the following significant advantages: To address the issues of limited coverage and high production costs associated with existing helmet airbags, this invention offers a systematic optimization. First, through the coordinated design of the side support 1, the central support 5, and the reinforcing support 3, combined with wavy edges and staggered compaction strips 7, a three-dimensional covering structure is constructed that fully adapts to the curvature of the head, effectively increasing the protective area. Second, and most importantly, the airbag is planar before processing, simplifying all manufacturing steps such as material cutting, layering, and welding. It eliminates the need for complex three-dimensional molding molds or processes, significantly reducing production costs and reliance on precision equipment, thus better meeting the demands of large-scale, high-efficiency production. The process of inflating the airbag before inserting it into the helmet also simplifies installation and replacement.

[0038] To address the issue of air leakage in existing helmet airbags, this invention improves the inflation port 4, constructing a multi-layered, highly reliable sealing system. The core feature is the use of a flexible cross-shaped slit 47 as the first automatic sealing line, which responds quickly to the insertion and removal of the inflation device, achieving instant opening and closing and effectively preventing gas escape. Simultaneously, the innovative sealing part 6 and the sealing ring 48, through a precise mechanical interlock between the arc-shaped protrusion 49 and the arc-shaped groove 63, provide a powerful and durable second mechanical seal. This dual sealing mechanism significantly enhances the overall sealing performance, making the airbag less prone to leakage, thus ensuring that the airbag maintains sufficient internal pressure when needed, achieving the expected protective effect, and resulting in better overall sealing performance and service life.

[0039] For those skilled in the art, the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

Claims

1. A helmet airbag structure, characterized in that, It includes a side support section and a middle support section. The side support section is connected to the reinforcing support section. Several compaction strips are distributed on the side support section, the middle support section, and the reinforcing support section. The compaction strips are distributed in an alternating manner. The center of the compaction strip is a pocket. The edge of the side support section is wavy.

2. The helmet airbag structure according to claim 1, characterized in that, The side support, the middle support, and the reinforcing support are close to each other, and the slots are triangular.

3. A helmet airbag structure according to claim 1 or 2, characterized in that, The helmet airbag structure is symmetrical.

4. A helmet airbag structure according to claim 1 or 2, characterized in that, One side of the side support has an air inlet, which is circular.

5. A helmet airbag structure according to claim 1, characterized in that, The inflation port includes a first support ring and a second support ring, with a hollow annular groove at the center of the first and second support rings.

6. A helmet airbag structure according to claim 5, characterized in that, The bottom of the inflation port is a base, and the center of the base has a bulge with a cross-shaped slit hole at the center.

7. A helmet airbag structure according to claim 5 or 6, characterized in that, The bottom of the air inlet has inner grooves on both sides.

8. A helmet airbag structure according to claim 5, characterized in that, The upper end of the inflation port is a ring-shaped closed ring with a circular hole at the center. The inner edge of the closed ring is an arc-shaped protrusion that fits into the sealing part.

9. A helmet airbag structure according to claim 8, characterized in that, The sealing part includes a connecting seat and a pull-out opening, which is an empty hole.

10. A helmet airbag structure according to claim 9, characterized in that, The thickness of the connector gradually decreases towards both ends, and the outer edge of the connector is an arc-shaped groove that matches the arc-shaped protrusion on the inner edge of the closed ring.

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