A puncture-resistant hard hat structure

Abstract

This utility model relates to the field of safety helmet technology. A puncture-resistant safety helmet structure includes an outermost hard shell, an inner shell pressed inside the hard shell, and several side EPS panels on the inner side of the inner shell, which are connected as a whole structure by connectors. A top EPS panel is located on the top of the inner shell, and the top EPS and side EPS panels are assembled and connected to the inner shell by several buckles. After assembly, the inner shell, top EPS, and side EPS panels are pressed into the hard shell. This utility model provides a puncture-resistant safety helmet structure that significantly improves the puncture resistance of the helmet through multi-layered composite protection, meets higher testing requirements, is easy to assemble, and balances protection, lightweight, and comfort, thus meeting higher practical needs. It solves the technical problems of existing safety helmets having weak puncture and impact resistance, single protective focus, and inability to meet higher testing requirements or higher practical needs of users.

Description

Technical Field

[0001] This utility model relates to the field of safety helmet technology, and in particular to a puncture-resistant safety helmet structure. Background Technology

[0002] Safety helmets are crucial equipment for protecting the heads of workers in industrial sectors such as construction, mining, and power. They also have a wide range of applications in daily life, such as riding electric vehicles, motorcycles, and bicycles. Therefore, the safety performance of safety helmets is of paramount importance.

[0003] Current safety helmets still have weak side puncture and impact resistance. Most safety helmets focus on top protection, with simple side protection structures. When encountering puncture or impact from sharp objects, they are easily penetrated, resulting in limited cushioning. Furthermore, the internal cushioning structure of safety helmets is usually rigidly connected, which does not provide ideal cushioning performance. They cannot pass higher puncture tests or meet higher practical requirements, thus requiring improvement. Utility Model Content

[0004] This invention provides a puncture-resistant helmet structure that significantly improves the puncture resistance of a safety helmet through multi-layer composite protection, meets higher testing requirements, is easy to assemble, and balances protection, lightweight, and comfort, thus meeting higher practical needs. It solves the technical problems of existing safety helmets having weak puncture and impact resistance, single protection focus, and inability to meet higher testing requirements or higher practical needs of users.

[0005] The above-mentioned technical problem of this utility model is solved by the following technical solution: a puncture-resistant safety helmet structure, including an outermost hard shell, an inner shell pressed inside the hard shell, a plurality of side EPS pieces provided on the inner side of the inner shell, the side EPS pieces being connected into an integral structure by connectors; a top EPS piece provided on the top of the inner side of the inner shell, the top EPS and the side EPS pieces being assembled and connected to the inner shell by a plurality of buckles; after the inner shell, top EPS, and side EPS pieces are assembled, they are pressed into the hard shell as a whole, and the groove structure inside the hard shell is used to achieve limiting and positioning. During assembly, the side EPS and connecting foam are pre-embedded as a whole. Then, the top EPS and side EPS are fixed to the inner shell with buckles. Finally, the inner shell is pressed into the hard shell. The hard shell has an integrally formed groove and protrusion structure for installing other buckles or components, which achieves positioning and limiting. The hard shell mainly provides high-strength external protection, effectively resisting impacts and punctures. The inner shell, top EPS, and side EPS work together to absorb and disperse impact energy, improving the helmet's puncture resistance and cushioning performance. When the top of the helmet is impacted, the hard shell and reinforcing ribs first resist the puncture and disperse the impact force. The remaining impact energy is absorbed by the top EPS. When the side of the helmet is impacted, the impact force is transmitted through the hard shell to the side EPS at the point of impact, dispersing and cushioning the impact force, greatly reducing the risk of local punctures and head injuries, and can also meet the requirements of higher puncture tests.

[0006] Preferably, the connector includes a pre-embedded skeleton with a "ring" structure embedded in the side EPS during foaming. The pre-embedded skeleton is embedded during the side EPS foaming process, forming an integrated structure that enhances the mechanical strength and integrity of the side EPS, preventing it from shattering or deforming under impact. The ring design provides uniform circumferential support, effectively dispersing impact force and improving side protection while maintaining the lightweight characteristics of the EPS. When the side of the helmet is impacted, the impact force is transmitted through the hard shell to the side EPS at the point of impact. This EPS absorbs energy through deformation, with sufficient deformation gaps between adjacent side EPS. Simultaneously, the pre-embedded skeleton transmits part of the impact force to adjacent side EPS, utilizing the characteristics of a non-rigid connection to achieve shared buffering, greatly reducing the risk of localized punctures and head injuries.

[0007] Preferably, the embedded skeleton has a "double-layer" structure, comprising two annular skeletons spaced apart vertically and several connecting skeletons connecting the two, together forming a three-dimensional frame. The two annular skeletons and the connecting skeletons work together to form a three-dimensional support structure, which can reliably connect the side EPS, achieving a non-rigid connection.

[0008] Preferably, a gap is provided between two adjacent side EPS units. The number of side EPS units can be adjusted according to actual needs. This invention is illustrated using four side EPS units as an example. The gap between two adjacent side EPS units allows the side EPS units to undergo elastic deformation when impacted, better absorbing and dispersing energy, reducing direct impact on the head, and also ensuring air circulation.

[0009] Preferably, the buckle is a rivet-press type buckle, including a rivet part and a claw part; several mounting grooves are provided on the top EPS and the side EPS, and several positioning holes corresponding to the mounting grooves are provided on the inner cap. The buckle passes through the positioning holes and is pressed into the mounting groove to lock. The rivet-press type buckle provides a firm mechanical connection, ensuring that the EPS assembly is stably fixed on the inner cap, preventing loosening or falling off. Since the rivet-press type buckle is an existing buckle structure, it will not be described redundantly in this utility model. The corresponding design of the mounting grooves and positioning holes simplifies the assembly process and improves production efficiency.

[0010] Preferably, both the top EPS and the side EPS have plastic bushings embedded in their mounting grooves, with the buckles locking into the plastic bushings. The plastic bushings mate with the buckle structure, preventing direct friction between the buckles and the EPS material. The plastic bushings also provide a more precise interface, ensuring the buckles are securely fixed, enhancing connection stability and safety, while facilitating disassembly and maintenance.

[0011] Preferably, the inner cap shell has perforated structures on the front and rear sides. These perforated structures significantly reduce the weight of the inner cap shell, improve wearing comfort and flexibility, while allowing free airflow, enhancing breathability, and reducing heat buildup on the head.

[0012] Preferably, the inner top of the hard cap shell is integrally formed with a mesh-like reinforcing rib. The mesh-like reinforcing rib is integrally formed on the inner side of the hard cap shell, which greatly improves the rigidity and puncture resistance of the hard cap shell, effectively disperses the impact force, and prevents local cracking or penetration.

[0013] Therefore, the puncture-resistant safety helmet structure of this utility model has the following advantages: through multi-layer composite protection, the puncture resistance of the safety helmet can be significantly improved, higher testing requirements can be met, assembly is convenient, and protection, lightweight and comfort can be balanced, thus meeting higher practical needs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a puncture-resistant safety helmet structure according to this utility model.

[0015] Figure 2 yes Figure 1 A schematic diagram of the explosion structure.

[0016] Figure 3 yes Figure 2 A schematic diagram of the structure of the medium-hard cap shell from below.

[0017] Figure 4 yes Figure 2 A three-dimensional structural diagram of the inner cap shell and the top EPS assembly.

[0018] Figure 5 yes Figure 4 A three-dimensional structural diagram of the inner cap shell.

[0019] Figure 6 yes Figure 4 A three-dimensional structural diagram of the top EPS.

[0020] Figure 7 yes Figure 2 A three-dimensional structural diagram of the assembly of the middle and side EPS with the pre-embedded skeleton.

[0021] Figure 8 yes Figure 7 A three-dimensional structural diagram of the middle and side EPS.

[0022] Figure 9 yes Figure 7 A three-dimensional structural diagram of the pre-embedded skeleton.

[0023] Figure 10 yes Figure 2 A three-dimensional structural diagram of the central buckle.

[0024] Figure 11 yes Figure 1 A three-dimensional structural diagram of the plastic bushing.

[0025] In the diagram, 1 is the hard cap shell, 2 is the inner cap shell, 3 is the side EPS, 4 is the embedded skeleton, 5 is the buckle, 6 is the positioning hole, 7 is the mounting groove, 8 is the plastic bushing, 9 is the reinforcing rib, and 10 is the top EPS. Detailed Implementation

[0026] The technical solution of the utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] Example: like Figure 1 and 2 As shown in 3 and 4 and 5 and 6 and 7 and 8 and 9 and 10 and 11, a puncture-resistant safety helmet structure includes an outermost hard shell 1, an integrally formed slot structure for assembling other accessories inside the hard shell 1, and an inner shell 2 pressed into the inner side of the hard shell 1. Both the hard shell 1 and the inner shell 2 are made of high-strength polymer materials.

[0028] Four side EPS3 pieces are installed on the inner side of the inner cap shell 2. An movable gap is reserved between two adjacent side EPS3 pieces. The side EPS3 pieces are connected into an integral structure by connectors.

[0029] The connector includes a pre-embedded skeleton 4 with a "ring" structure that is embedded in the side EPS3 during foaming. The pre-embedded skeleton 4 has a "double-layer" structure and includes two ring skeletons spaced apart at the top and bottom and several connecting skeletons that connect the two, together forming a three-dimensional frame.

[0030] The top EPS10 is installed on the inner side of the top of the inner cap shell 2. The top EPS10 and the side EPS3 are assembled and connected to the inner cap shell 2 by several buckles 5.

[0031] The buckle 5 is a rivet-press type buckle 5, including a rivet part and a claw part; several mounting grooves 7 are opened on the top EPS10 and the side EPS3, and several positioning holes 6 corresponding to the mounting grooves 7 are opened on the inner cap 2. The buckle 5 passes through the positioning holes 6 and is pressed into the mounting groove 7 to lock.

[0032] Plastic bushings 8 are embedded in the mounting grooves 7 of the top EPS10 and the side EPS3. The plastic bushings 8 have a single hole or double hole structure, and the buckle 5 locks with the plastic bushings 8.

[0033] After the inner cap shell 2, top EPS10, and side EPS3 are assembled by buckles 5, they are pressed into the hard cap shell 1 as a whole, and the groove structure inside the hard cap shell 1 is used to achieve limiting and positioning.

[0034] The inner cap shell 2 has a hollow structure on the front and back sides.

[0035] The inner top of the hard cap shell 1 is integrally formed with a mesh-like reinforcing rib 9.

[0036] When the top of the helmet is impacted, the hard shell 1 and the reinforcing rib 9 first resist the puncture and disperse the impact force, while the remaining impact energy is absorbed by the top EPS10.

[0037] When the side of the helmet is impacted, the impact force is transmitted through the hard shell 1 to the side EPS3 at the point of impact. The EPS sheet absorbs energy through deformation, and there is a sufficient deformation gap between adjacent side EPS3. At the same time, part of the impact force is transmitted to the adjacent side EPS3 through the pre-embedded skeleton 4. The non-rigid connection characteristic is used to achieve common buffering, which greatly reduces the risk of local puncture and head injury.

[0038] Throughout the process, the buckle 5 and the plastic bushing 8 ensured the reliability of the connection, while the hollowed-out area and the movable gap ensured the comfort of wearing.

[0039] The specific embodiments described herein are merely illustrative examples of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A puncture-resistant hard hat structure, characterized by: The system includes an outermost hard cap shell, inside which an inner cap shell is pressed. The inner cap shell has several side EPS pieces on its inner side, which are connected to form an integral structure by connectors. The top of the inner cap shell has a top EPS piece, which, along with the side EPS pieces, is assembled and connected to the inner cap shell by several buckles. After the inner cap shell, top EPS, and side EPS pieces are assembled, they are pressed into the hard cap shell as a whole, and the groove structure inside the hard cap shell is used to achieve limiting and positioning.

2. A puncture-resistant helmet structure according to claim 1, characterized in that: The connector includes a pre-embedded skeleton with an "annular" structure that is embedded in the side EPS during foaming.

3. A puncture-resistant helmet structure according to claim 2, wherein: The pre-embedded skeleton has a "double-layer" structure, which includes two annular skeletons spaced apart at the top and bottom and several connecting skeletons connecting the two, together forming a three-dimensional frame.

4. A puncture-resistant helmet structure according to claim 1, wherein: An adjustable gap is provided between two adjacent side EPS units.

5. A puncture-resistant helmet structure according to claim 1, wherein: The buckle is a rivet-press type buckle, including a rivet part and a claw part; several mounting grooves are opened on the top EPS and the side EPS, and several positioning holes corresponding to the mounting grooves are opened on the inner cap. The buckle passes through the positioning holes and is pressed into the mounting groove to lock.

6. A puncture-resistant helmet structure according to claim 1, wherein: Plastic bushings are embedded in the mounting grooves of both the top EPS and the side EPS, and the buckles are locked in place with the plastic bushings.

7. A puncture-resistant helmet structure according to claim 1, wherein: The inner cap shell has a hollow structure on the front and rear sides.

8. A puncture-resistant helmet structure according to claim 1, wherein: The inner top of the hard cap shell is integrally formed with a mesh-like reinforcing rib.

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