Safety helmet capable of improving safety protection performance

Abstract

The utility model belongs to labor protection articles, and relates to a safety helmet, in particular to a safety helmet capable of improving safety protection performance. The problems that in order to improve the protection performance of an existing safety helmet, the structural design is complex, the weight is large, and the radial distance between a helmet hoop and a helmet shell does not meet the standard requirement are solved. According to the utility model, the top belt of the cap lining is designed into two layers, and the vertical impact kinetic energy can be absorbed to the greatest extent through gradual impact resistance of the two layers of the top belt of the cap lining, so that the injury to the head is relieved; the helmet hoop is designed to be of a two-section butt-joint combined whole-circle closed structure, the problem that due to the fact that an old-fashioned helmet adopts a rear hoop to adjust, the rear portion of the helmet lacks a protection buffering structure is solved, and the helmet hoop combined into the whole circle keeps a uniform and reasonable horizontal radial distance with the helmet shell through the rubber pipe pad. The capability of absorbing the transverse impact kinetic energy, namely the buffering performance of resisting the transverse impact, of the safety helmet is further improved; the inner diameter of the combined hat hoop can be adjusted, and it is ensured that the hat hoop can adapt to the head shapes of different users and is tightly attached.

Description

Technical Field

[0001] The utility model belongs to labor protection products, relates to a safety helmet, and specifically is a safety helmet with improved safety protection performance. Background Art

[0002] Safety helmets are essential labor protection equipment used to protect employees from head injuries. They are generally composed of a helmet shell, a lining, a chin strap, and accessories. The helmet shell is hemispherical and arched. This structure can effectively disperse impact force, that is, it turns the point of force into a surface of force. A certain space is left between the helmet shell and the lining. The plastic deformation, elastic deformation, and allowable structural destructive deformation of the lining fully absorb the impact kinetic energy, thereby avoiding or reducing direct damage to the head. Impact absorption performance, puncture resistance, lateral rigidity, electrical insulation, and flame retardancy are the basic technical performance requirements of safety helmets. Safety helmet designers and manufacturers must strictly follow the national standard GB2811-2019 for design and production.

[0003] In order to improve the protective performance of the helmet shell, the material of the helmet shell is selected to be carbon fiber, which is strong but not necessarily economical; it is practical to add top ribs to the helmet shell, but if the top ribs are designed to be parallel M-shaped or V-shaped with the front intersecting, when a sharp object hits the concave or dead corner formed by the combination of the two top ribs, the risk of the helmet being punctured will be greatly increased; in order to improve the impact absorption performance of the helmet, some adopt a multi-layer buffer structure, such as Chinese patent CN207269934U and Chinese patent CN108783716B, In the invention, an air cushion layer, an elastic liner or an air bag layer is installed in the cavity between the top band and the cap shell, such as Chinese patents CN211532902U, CN111887531A and CN221265340U. Some air bags are also designed to be inflatable, such as Chinese patent CN221104898U. These buffer designs for vertical impact have their own merits, but they all have the problems of complex structure, high difficulty in production and heavy weight, and there is still a distance for their popularization and use. When the object hits the side horizontally, the cushion layer is not easy to install. GB2811-2019 requires that the radial distance between the headband and the inner side of the helmet shell in the horizontal plane should be greater than or equal to 6mm when the helmet is worn. This is mainly to effectively cushion the lateral impact. The most criticized thing is that many headband designs are not annular integral structures, let alone radial spacing. The front of the helmet is generally designed with a brim (tongue) of about 50mm, while the side and rear brims of the helmet seem to be irrelevant and no professional discussion has been seen. For the visor and brim, GB2811-2019 only requires it to be less than or equal to 70mm. In fact, the brim and brim are equivalent to the reinforcement ribs of the arch structure of the lower edge of the helmet, which are the key elements of the helmet to resist lateral impact. Once the lower edge is broken or sunken, the overall impact resistance structure of the helmet will be destroyed. Therefore, in order to improve the lateral and rear protection performance of the helmet, the design of the headband and brim must be taken seriously. In addition, in order to adjust the size of the hat hoop, many safety helmets use the method of releasing the back hoop and installing an adjustment mechanism downward. Because the back hoop adjustment component exceeds the brim of the hat, the safety helmets cannot be stacked, and the problem of bulky packaging boxes and high storage and transportation costs also needs to be solved urgently. Utility Model Content

[0004] The utility model aims to solve the technical problems of complex structural design, heavy weight and lack of radial spacing between the cap hoop and the cap shell in order to improve the protection performance of the current safety helmet, and provides a safety helmet with improved safety protection performance.

[0005] The utility model is realized by adopting the following technical scheme: a safety helmet with improved safety protection performance, comprising a helmet shell and a helmet lining located in the helmet shell; the helmet lining comprises two layers of top straps spaced apart from each other, the bottom layer top strap being closest to the top of the helmet shell, and the first layer top strap being farther away; the bottom layer top strap and the first layer top strap are respectively connected to connectors via bottom layer hanging straps and first layer hanging straps, and are connected to the inner wall of the helmet shell via the connectors.

[0006] Furthermore, the bottom layer top band and the first layer top band are both circular; the bottom layer hanging bands and the first layer hanging bands are multiple and are evenly spaced around the bottom layer top band and the first layer top band; the bottom layer hanging bands and the first layer hanging bands are staggered at a certain angle.

[0007] Furthermore, there are three bottom-layer hanging straps and three first-layer hanging straps, which are installed at a 60-degree interval.

[0008] Furthermore, a flexible sponge is filled between the bottom layer top belt and the first layer top belt.

[0009] Furthermore, the vertical spacing between the bottom layer top band and the first layer top band is 15 mm, and the vertical spacing between the bottom layer top band and the top of the cap shell is 30 mm.

[0010] Furthermore, the connectors are installed at anchor points evenly distributed along the inner edge of the cap shell.

[0011] Furthermore, it also includes a cap hoop, which is a combined annular integral structure, consisting of two hoop segments, each hoop segment is provided with a plug connector at both ends, each hoop segment is provided with a plurality of plug holes, and the two hoop segments are connected to the plug connector and the plug hole through the plug connector to form an annular structure; the connector is provided with a plug that can be inserted into the plug hole, and the cap hoop is connected to the connector through the plug hole and then hung on the anchor point on the inner edge of the cap shell.

[0012] Furthermore, rubber tube pads are symmetrically distributed on the outside of the cap hoop, and the length of the rubber tube pads is the same as the height of the cap hoop. Rubber tube plug joints are symmetrically arranged in the middle of the outer wall of the rubber tube pads, which can be evenly inserted into the plug holes of the cap hoop; the two ends of the two hoop sections are also connected with a lifting twist.

[0013] Furthermore, four top ribs are provided on the top of the cap shell, which are arranged vertically in the front, back, left and right directions, and are directed toward the center of the top of the cap shell but do not converge, and the high points of the top ribs gradually become flush with the center of the top of the cap shell.

[0014] Furthermore, the brim of the hat shell is a curled curved tubular structure; and a rear hoop hat band of adjustable length is installed on the rear side of the hat shell.

[0015] The present invention can solve some practical problems of the safety helmet mentioned in the background technology. Some manufacturers design the top ribs of the safety helmet into a parallel M shape or a V shape that intersects at the front. When a sharp object hits the concave or blind spot where the two top ribs are combined, the risk of the safety helmet being penetrated will be greatly increased. The present invention sets the top ribs of the safety helmet as four top ribs, which are arranged vertically in the front, back, left and right directions, facing the center of the top of the helmet but do not intersect. The high point of the top ribs is flush with the center of the top of the helmet, eliminating the risk of the safety helmet being penetrated due to improper arrangement of the top ribs. The utility model designs the buffer structure of the helmet lining into a double-layer top strap type. The top strap is hung upside down on the precast anchor point on the inner edge of the helmet through a connecting component. When the helmet is subjected to a vertical impact, the top strap and hanging strap of the first layer (the layer close to the head) of the helmet lining are first subjected to force. The hanging strap and the connecting parts can absorb part of the impact kinetic energy from deformation to breaking. The hanging straps and connecting parts in different directions will have different breaking times due to inconsistent forces, which will inevitably cause angular displacement of the helmet, that is, it will cause the helmet to roll and produce a rolling unloading effect. After the top strap of the first layer of helmet lining breaks and completes its energy absorption and unloading mission, the top strap of the bottom layer of helmet lining will immediately fill its place. Through the gradual resistance of the double-layer top strap, the vertical impact kinetic energy can be absorbed to the greatest extent, and through The rolling unloading force reduces the impact damage to the operator's head and meets the requirements of GB2811-2019, that is, the impact force transmitted to the head is not more than 4900N; Chinese patents CN211532902U, CN111887531A and CN221265340U are to install an air cushion layer, an elastic liner or an airbag layer in the cavity between the top strap and the hat shell. Chinese patent CN221104898U is also designed with an inflatable airbag. These are all hard-impact resistant types. The innovative design of the utility model is reflected in the use of an inverted double-layer top strap buffer structure, which has a simple and lightweight structure and is easy and quick to manufacture and install. The first-layer top strap not only has breaking and impact absorption performance, but also has a rolling unloading effect. The present invention designs the headband of the safety helmet as a two-section butt-jointed combined annular integral structure, which is hung on the inner edge anchor point of the helmet shell through a connector. Rubber tube pads with an inner diameter of 10mm and a wall thickness of 3mm are evenly distributed and inserted on the outside of the headband to control the distance between the headband and the inner side of the helmet shell so that it meets the requirements of GB2811-2019, that is, the radial distance between the headband and the inner side of the helmet shell on the horizontal plane should be greater than or equal to 6mm when the safety helmet is worn. The installation of a rubber tube pad between the headband and the helmet shell is similar to some structures in the above-mentioned patents, but the rubber tube pad is designed in the present invention mainly to control the distance between the headband and the helmet shell. When the diameter of the headband is adjusted to the maximum, that is, when the inside of the rubber tube pad is compressed to the minimum, it can still ensure that the distance is greater than the national standard requirement of 6mm.The cap hoop is designed as two sections of equal length, and plug-in joints are designed at both ends of the cap hoop assembly. After bending, they are connected to form a circular integral cap hoop. The operator can adjust the length of the cap hoop joints on the left and right sides according to personal needs to make the safety helmet adapt to his or her head shape and fit tightly; the cap hoop combined into a closed ring is an integral structure, which is connected to the anchor point on the inner wall of the safety helmet through evenly distributed connecting pieces (the existing patented product: safety helmet lining fixing piece CN211882451U can be utilized and improved), and the rubber tube pads evenly distributed and plugged into the outside of the cap hoop can ensure that the buffer spacing meets the national standard requirements. In this way, the performance of the safety helmet in resisting lateral side impacts is further improved, solving the problem that the old safety helmet lacks protection against lateral impacts, especially the rear part of the safety helmet; after the rear hoop tightening structure is eliminated, the safety helmet can be stacked, solving the problem of packaging, storage and transportation; the utility model designs the brim of the safety helmet as a curled curved tube structure, which is equivalent to adding an arched protective ring, which can further enhance the lateral rigidity of the safety helmet. In general, the utility model has the advantages of simple structure, easy manufacture, quick assembly, low cost and good protection performance.

[0016] The top band of the cap lining of the utility model is designed as a double-layer, and the gradual impact resistance of the double-layer top band of the cap lining can maximize the absorption of vertical impact kinetic energy, slowing down and reducing the damage to the head; the cap hoop is designed as a combined full-circle closed structure of two sections butted together, eliminating the problem that the old-style safety helmet adopts rear hoop adjustment, resulting in a lack of protective buffer structure at the rear of the safety helmet. The cap hoop combined into a full circle maintains a symmetrical and reasonable horizontal spacing with the cap shell through a rubber tube pad, and the ability of the safety helmet to absorb lateral impact kinetic energy, that is, the buffering performance against lateral impact, is further improved; the combined cap hoop can adjust the inner diameter to ensure that the cap hoop can adapt to different uses The utility model can adapt to the user's head shape and fit tightly; after removing the rear hoop tightening adjustment component of the safety helmet hoop, the safety helmets can be stacked, eliminating the disadvantage of bulky packaging boxes and high storage and transportation costs; some manufacturers design the top ribs of the safety helmet to be parallel concave and convex or intersecting. When a sharp object hits the concave or dead corner of the combination of two top ribs vertically, the risk of the safety helmet being penetrated will be greatly increased. The utility model sets the top ribs of the safety helmet to four top ribs, which are arranged vertically in the front, back, left and right directions, facing the center of the top of the helmet but not converging. The high point of the top ribs gradually becomes flush with the center of the top of the helmet. When the top of the safety helmet is placed downward, it can keep the safety helmet in a stable position. The brim of the safety helmet is designed to be a curled curved pipe structure, which can further strengthen the overall rigidity of the safety helmet and further improve the protective performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model when viewed from above.

[0018] Figure 2 A perspective structural diagram of the utility model (the cap shell is inverted).

[0019] Figure 3Schematic diagram of the installation structure of the cap hoop and rubber pipe gasket.

[0020] Figure 4 Schematic diagram of the structure of a sub-hoop segment of the cap hoop.

[0021] Figure 5 for Figure 4 Top view of .

[0022] Figure 6 Schematic diagram of the structure of the rubber tube pad.

[0023] Figure 7 for Figure 6 Schematic diagram of the top view structure.

[0024] Figure 8 This is a schematic diagram of the structure of the utility model from a top view.

[0025] Figure 9 Schematic diagram of the side structure of the utility model (the cap shell is inverted).

[0026] 1-bottom layer top strap, 2-first layer top strap, 3-bottom layer hanging strap, 4-first layer hanging strap, 5-connector, 6-anchor point, 7-hat hoop, 8-rubber tube pad, 9-top reinforcement, 10-hat brim;

[0027] 71-plug connector, 72-plug hole, 73-knob, 81-rubber tube plug connector. DETAILED DESCRIPTION

[0028] The utility model has the following specific embodiments: The center portion of the top strap of the helmet lining is circular, extending in three directions at 120 degrees. A buckle is sewn at the end to form a sling, which is attached to the inner edge of the helmet shell via a connector 5 at anchor points 6 evenly distributed along the inner edge. The top strap is made of pure cotton and a flexible, high-strength, tear-resistant synthetic fiber. The components connected to the top strap are designed as elastic, consumable parts that absorb impact kinetic energy. The top strap of the helmet lining is designed as a two-layered design. The first-layer sling 4 of the first-layer top strap 2 (the layer closest to the head) and the bottom-layer sling 3 of the bottom-layer top strap 1 are of the same width. The slings of the two layers of top straps are staggered 60 degrees. The vertical spacing between the two layers of the lining top straps is 15 mm, and the space between them is filled with flexible sponge. The vertical distance between the bottom top strap and the top of the helmet shell is 30mm. When the helmet is impacted, the straps of the first top strap are subjected to different forces. When the connectors of the straps in different directions are broken, the helmet will produce angular displacement, that is, the rolling unloading phenomenon will occur. After the impact causes the connecting component of the first top strap 2 of the helmet to break, the bottom top strap 1 will immediately fill in the position and form a buffer layer to absorb the impact kinetic energy again. Through the gradual resistance of the double-layer top strap of the hat lining, the vertical impact kinetic energy can be absorbed to the maximum extent, reducing the damage to the head. The first top strap is made of pure cotton material and can also prevent the generation of static electricity. Figure 1 、 2The cap hoop 7 of the helmet liner is designed as a combined annular integral structure, and is made of high-strength elastic plastic. Both ends of the two sections of the cap hoop are equipped with plug connectors 71, which are connected to form an annular structure. After being connected to the connector 5 through the plug hole 72, it is hung on the anchor hanging point on the inner edge of the cap shell (the connector can be the connector between the top strap and the inner wall of the cap shell used in existing conventional helmets, which is provided with a plug connector and can be inserted into the plug hole of the cap hoop). Rubber tube pads 8 are symmetrically distributed on the outside of the cap hoop. The length of the rubber tube is the same as the height of the cap hoop. Rubber tube plug connectors 81 are symmetrically provided in the middle of the outer wall of the rubber tube pad, which can be evenly inserted into the plug hole 72 of the cap hoop to ensure that the cap hoop and the cap shell maintain a uniform and reasonable horizontal spacing. When subjected to a lateral impact, the entire circle of the cap hoop can form a combined force to jointly absorb the impact kinetic energy. After the cap hoop diameter is adjusted appropriately, the plug of the connecting piece is selected to insert into the plug hole 72 of the cap hoop. After adjusting the cap hoop diameter, the consistency of the rubber tube gasket contraction should be maintained as much as possible to ensure that the cap hoop is neatly formed and can adapt to the user's head shape and fit tightly and securely. Figure 3-Figure 7 . Although the safety helmets can be stacked after the rear hoop tightening adjustment component is removed, eliminating the disadvantages of bulky packaging boxes and high storage and transportation costs, but without the rear hoop, it is inconvenient for female employees with long hair to control their hair. For this reason, a hat strap with adjustable length is installed, which is pushed to the rear hoop when wearing the safety helmet and can be used to wrap the long hair. Four top ribs 9 are set on the top of the safety helmet, which are arranged vertically in the front, back, left and right directions, facing the center of the top of the helmet but not converging. The high point of the top ribs gradually becomes flush with the center of the top of the helmet. When the top of the safety helmet is placed face down, the safety helmet can be kept in a stable position. The brim 10 of the safety helmet is designed as a curled tubular structure, which can further enhance the overall rigidity of the safety helmet. Figure 8 、 9 .

[0029] The technical features of the utility model are as follows: 1. The top band of the hat lining is designed to be a double-layer structure. Through the gradual resistance of the double-layer top band of the hat lining, the vertical impact kinetic energy can be absorbed to the maximum extent, and the damage to the head can be reduced.

[0030] The cap hoop is designed as a full-circle closed structure composed of two sections connected together. The inner diameter of the cap hoop can be adjusted to adapt to the head shapes of different people and fit tightly.

[0031] 2. A high-strength elastic rubber tube pad is installed on the outside of the hat hoop. The entire circle of the hat hoop can maintain a uniform and reasonable horizontal distance with the hat shell, further improving the lateral impact resistance of the helmet.

[0032] 3. Four top reinforcements are set on the top of the helmet, which are arranged vertically in the front, back, left and right directions, facing the center of the helmet but not converging, eliminating the risk of the helmet being penetrated at the intersection of the top reinforcements. The high point of the top reinforcement is flush with the top of the helmet, which can keep the helmet facing up and placed stably.

[0033] 4. After the rear hoop component is removed from the safety helmet, it can be stacked, eliminating the disadvantages of bulky packaging boxes and high storage and transportation costs. In order to meet the needs of female employees with long hair to fix their hair in a bun, an adjustable rear hoop strap is installed. When wearing the safety helmet, it is pushed to the rear hoop and adjusted to fit.

[0034] 5. The brim of the helmet is designed as a curled curved tube structure, which can prevent the brim from breaking and further improve the protective performance of the helmet.

Claims

1. A helmet with improved safety protection performance, comprising a helmet shell and a helmet lining located inside the helmet shell; characterized in that: The cap lining comprises two layers of top straps spaced apart from each other, the bottom layer top strap (1) being closest to the top of the cap shell, and the first layer top strap (2) being farther away; the bottom layer top strap (1) and the first layer top strap (2) are respectively connected to a connector (5) via a bottom layer hanging strap (3) and a first layer hanging strap (4), and are connected to the inner wall of the cap shell via the connector (5).

2. A helmet with improved safety protection performance as claimed in claim 1, characterized in that: The bottom layer top belt (1) and the first layer top belt (2) are both circular; the bottom layer hanging belt (3) and the first layer hanging belt (4) are both multiple and are evenly spaced around the bottom layer top belt (1) and the first layer top belt (2); the bottom layer hanging belt (3) and the first layer hanging belt (4) are staggered at a certain angle.

3. A helmet with improved safety protection performance as claimed in claim 2, characterized in that: The bottom layer hanging belt (3) and the first layer hanging belt (4) are both three and are installed at a 60-degree staggered angle.

4. A helmet with improved safety protection performance as claimed in claim 3, characterized in that: The middle of the bottom layer top belt (1) and the first layer top belt (2) is filled with flexible sponge.

5. A helmet with improved safety protection performance as claimed in claim 4, characterized in that: The vertical spacing between the bottom layer top band (1) and the first layer top band (2) is 15 mm, and the vertical spacing between the bottom layer top band (1) and the top of the cap shell is 30 mm.

6. A helmet with improved safety protection performance according to any one of claims 1 to 5, characterized in that: The connecting piece (5) is installed at anchor points (6) evenly distributed on the inner edge of the cap shell.

7. A helmet with improved safety protection performance as claimed in claim 6, characterized in that: The cap hoop (7) is a combined annular integral structure consisting of two hoop segments, each hoop segment is provided with a plug connector (71) at both ends, and each hoop segment is provided with a plurality of plug holes (72), and the two hoop segments are connected to the plug holes (72) through the plug connector (71) and the plug holes (72) to form an annular structure; the connector (5) is provided with a plug that can be inserted into the plug hole (72), and the cap hoop (7) is connected to the connector (5) through the plug hole (72) and then hung on the anchor point (6) on the inner edge of the cap shell.

8. A helmet with improved safety protection performance as claimed in claim 7, characterized in that: The outer side of the cap hoop (7) is symmetrically and evenly distributed with a rubber tube pad (8), the length of the rubber tube pad (8) is the same as the height of the cap hoop (7), and the middle part of the outer wall of the rubber tube pad (8) is symmetrically provided with a rubber tube plug connector (81), which can be evenly inserted into the plug hole (72) of the cap hoop (7); the two ends of the two hoop sections are also connected with a lifting twist (73).

9. A helmet with improved safety protection performance according to any one of claims 1 to 5, characterized in that: Four top ribs (9) are arranged on the top of the cap shell. The top ribs (9) are arranged vertically in the front, back, left and right directions, and are directed toward the center of the top of the cap shell but do not converge. The high points of the top ribs (9) gradually become flush with the center of the top of the cap shell.

10. A helmet with improved safety protection performance according to any one of claims 1 to 5, characterized in that: The brim (10) around the cap shell is a curled curved tubular structure; a rear hoop cap band with adjustable length is installed on the rear side of the cap shell.

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