TWI680727B - Hard hat capable of absorbing multi-directional impact - Google Patents

Abstract

The invention relates to a safety helmet, which includes a cap shell, an elastic support provided on the cap shell, and a sliding aid provided on the elastic support in sequence from outside to inside. When the cap shell is impacted by external force, the cap shell The characteristics of the sliding aid can slide relative to the user's head, so that the helmet of the present invention can absorb and convert the impact force it receives to other energy, thereby improving the protection effect on the head.

Description

Hard hat capable of absorbing multi-directional impact

The invention relates to a safety helmet, in particular to a safety helmet capable of absorbing multi-directional impact.

The current common safety helmet is mainly composed of a rigid outer cover and a buffer layer filled in the rigid outer cover. When impacted by an external force, the rigid cover first absorbs part of the energy, then the buffer layer absorbs part of the energy, and finally the rest is borne by the head and cervical spine. In terms of the type of external impact, it can be roughly divided into three types: radial impact, tangential impact and oblique impact. In the case of radial impact, the linear acceleration generated by the head may cause the skull to rupture or/and The compression injury of the brain, as a result of the tangential impact, the angular acceleration generated by the head can also cause damage to the brain or/and the cervical spine by shear forces. However, according to injury statistics, pure radial impact and tangential impact are rare. The most common type is the oblique impact composed of the aforementioned two impacts. In the case of oblique impact, the head will Simultaneously produces linear acceleration and rotational acceleration, so it is more likely to cause concussion, Traumatic brain injury (TBI), Subdural hematoma (SDH) or diffuse axonal injury (Diffuse Axonal Injury, DAI) And other serious injuries.

In order to ensure that the helmet has sufficient safety, the helmet will undergo some impact tests after the manufacturing is completed, but the general impact test is usually only for radial impact, which causes the helmet to have good absorbency in radial impact , But for Absorption capacity provided by external force impacts in other directions (especially oblique impacts) is not ideal.

The main object of the present invention is to provide a safety helmet which can absorb impacts of external forces in multiple directions, thereby improving the protection of the head.

In order to achieve the above main objective, the safety helmet of the present invention includes a cap shell, an elastic support and a sliding aid. The elastic bracket is provided on the inner circumferential surface of the cap shell, and the sliding aid is provided on the inner circumferential surface of the elastic bracket, wherein the elastic bracket is used to support the cap shell on the one hand and provide the sliding aid on the other hand The restraint effect makes the sliding aid produce a good covering comfort to the head, and the sliding aid is used to provide a sliding effect on the cap shell. In this way, when the cap shell is impacted by an external force, especially in the case of an oblique impact, the sliding aid allows the cap shell to slide relative to the user's head, so that the original cap can be transferred to the head The impact force is absorbed and converted into other energy, thereby greatly improving the protection effect on the head.

More preferably, the sliding aid has a sliding medium, and the sliding medium can have many different forms. For example, the sliding medium can be a fluid such as a gas or a liquid, or a plurality of balls that can roll freely. The sliding medium can be two opposing substrates, the two substrates are in contact with each other by a low friction surface, so that the two substrates can be relatively displaced; the sliding medium can be two opposing magnets, the two The opposite pole of the magnet has opposite polarity, which causes the two magnets to produce relative displacement under the action of magnetic repulsion force; the sliding medium may be a flexible substrate between two opposite substrates and a plurality of substrates disposed between the two substrates The wire rod, through the characteristics of the flexible wire rods, enables the two substrates to produce relative displacement; the sliding medium may be a plate body made of an elastic material, the plate body having a plurality of recesses and the multiple Two convex parts, two or two between the concave and convex parts Connected and staggered, so that the board uses its own elastic deformation to provide a sliding effect; the sliding medium has a base material and a plurality of flexible strip structures provided on the base material, through these flexible The deformation characteristics of the strip structure provide a sliding effect.

The detailed structure, characteristics, assembling or using manner of the safety helmet provided by the present invention will be described in the detailed description of the subsequent embodiments. However, those of ordinary knowledge in the field of the present invention should be able to understand that these detailed descriptions and specific embodiments listed for implementing the present invention are only used to illustrate the present invention, and are not intended to limit the scope of the patent application of the present invention.

10‧‧‧ helmet

12‧‧‧Head

20‧‧‧hat shell

21‧‧‧ Outer cover

22‧‧‧buffer layer

23‧‧‧Card hole

30‧‧‧Elastic support

32‧‧‧Top frame strip

34‧‧‧Side frame strip

36‧‧‧ Regulator

38‧‧‧Card connection department

40‧‧‧Sliding parts

41‧‧‧Table cloth

42‧‧‧Slip medium

43‧‧‧ Base material

44‧‧‧Flexible wire

46‧‧‧ball

48‧‧‧ Base material

50‧‧‧Low friction surface

52‧‧‧Magnet

54‧‧‧Magnetic pole

56‧‧‧recess

58‧‧‧Convex

60‧‧‧ Base material

62‧‧‧Flexible strip structure

Fig. 1 is a perspective view of the appearance of the helmet of the present invention.

Fig. 2 is an exploded perspective view of the helmet of the present invention.

FIG. 3 is a schematic cross-sectional view of the helmet of the present invention.

Figure 4 is similar to Figure 3, and mainly shows the state of the cap shell subjected to external force impact.

Figures 5a~5g are schematic diagrams of different sliding media provided by the helmet of the present invention.

The applicant first explains here that in the embodiments and drawings to be described below, the same reference numbers indicate the same or similar elements or their structural features.

Please refer to FIGS. 1 and 2 first. The safety helmet 10 of the present invention includes a cap shell 20, an elastic support 30, and a sliding aid 40.

The cap shell 20 has an outer cover 21 and a buffer layer 22, and the buffer layer 22 is fixed on the inner peripheral surface of the outer cover 21 using an adhesive, wherein the outer cover 21 uses a rigid material such as hard plastic It is mainly used as the first layer of protection. As for the buffer layer 22, it is made of a shock-absorbing material such as foam material, which is mainly used to provide a shock-absorbing cushion effect.

The elastic support 30 is made of an elastic material such as plastic. As shown in FIG. 2, the elastic bracket 30 has two opposing top frame strips 32 and one side frame strip 34, one end of the two top frame strips 32 is integrally connected to the front end of the side frame strip 34, as for the side frame strip 34 After that, an adjuster 36 is connected to the end, and the tightness of the side frame strip 34 is adjusted by the adjuster 36, so that the side frame strip 34 can be adapted to users with different head circumference sizes to adjust the covering area. In addition, the top frame strips 32 and the side frame strips 34 are detachably provided on the inner circumferential surface of the buffer layer 22 of the cap shell 20, for example, they are adhered to using a fastener (not shown) such as a devil felt The inner peripheral surface of the buffer layer 22 of the cap shell 20, further, as shown in FIG. 3, a plurality of engaging portions 38 may be added to the outer peripheral surface of each top frame strip 32 and the side frame strip 34, except Using the above-mentioned adhesive fastener to stick to the inner peripheral surface of the buffer layer 22 of the cap shell 20, these clamping portions 38 can be used to buckle in one of the clamping holes 23 of the buffer layer 22 in a one-to-one manner. In this way, the bonding strength between the two can be increased, and the elastic bracket 30 can be removed at any time to adjust the tightness.

The sliding member 40 has a surface cloth 41 made of a low-friction material such as flannel. One side of the table cloth 41 is adhered to the inner peripheral surface of the elastic support 30 using a fastener (not shown) such as a devil felt, so that the sliding aid 40 can be used as a watch through the restraint effect generated by the elastic support 30 The other side of the cloth 41 makes direct contact with the head 12 of the user, and can also be easily removed for cleaning when the surface is dirty. In addition, the sliding member 40 further has a sliding medium 42 covered by the surface cloth 41. In this embodiment, the sliding medium 42 has two opposite substrates 43 and a plurality of flexible wires 44. The second substrate 43 is fixed to the surface cloth 41 using an adhesive. The flexible wires 44 are disposed between the two substrates 43 and are not limited to regular or irregular The arrangement of the two substrates 43 can be easily displaced relative to each other due to the characteristics of the flexible wires 44. In addition, it should be added that the sliding member 40 in Figure 2 takes two units as an example, one of which is located at the top of the head and the other is located around the head. However, in fact, the two units can be integrated into one unit It can even be divided into more than two units to meet different usage requirements.

As can be seen from the above, when the cap shell 20 is impacted by an external force, part of the energy is first absorbed by the cap shell 20 and the outer cover 21, and then a part of the energy is absorbed by the buffer layer 22 of the cap shell 20, and then transferred to the sliding aid 40, As shown in FIGS. 3 and 4, the sliding aid 40 allows the cap shell 20 to slide relative to the head 12 through the sliding aid 42, so that the impact force received by the sliding aid 40 is converted into a position caused by the relative movement of the two. Yes, even the sliding member 40 may slip with the head 12 due to the low friction characteristics of the surface cloth 41, so that the impact force received by the sliding member 40 is further converted into heat energy due to mutual friction, and finally The rest is borne by the head 12 and the cervical spine. In other words, in the process of the safety helmet 10 of the present invention being subjected to an external force, multiple methods such as the deformation of the cap shell 20 itself, the sliding of the cap shell 20 relative to the head 12 and the friction between the cloth 41 and the head 12 will be used The impact force transmitted to the head 12 is absorbed and converted into other energy, so that the damage to the head 12 caused by external force impacts from different directions can be greatly reduced, especially in the case of an oblique impact, thereby improving the The protective effect of the head 12.

In addition, it should be added that the sliding medium 42 can have many different implementations. For example: as shown in Figures 5a~5b, the sliding medium 42 is a fluid such as air or colloid, and the deformation characteristics of the fluid allow the cap shell 20 to produce a sliding effect; as shown in Figure 5c, The sliding medium 42 is composed of a plurality of balls 46, and the arbitrary rolling of the balls 46 allows The cap shell 20 produces a sliding effect; as shown in FIG. 5d, the sliding medium 42 is two opposing substrates 48, each of which has a low friction surface 50, and the low friction surface 50 of the two substrates 48 Facing each other and abutting each other, the relative displacement between the two substrates 48 is easy to allow the cap 20 to produce a sliding effect. Furthermore, the substrate 48 can be made of a low friction material, such as polyoxymethylene resin (Polyoxymethylene) , POM), Fluororesin, Aramid, plastics with chemical lubricant added, graphite-filled polyimide (Polyimide, PI), ultra-high molecular weight polyethylene , UHMWPE), etc.; as shown in FIG. 5e, the sliding medium 42 is two opposing magnets 52, and a magnetic pole 54 (not limited to N pole or S pole) opposite to the two magnets 50 has the same polarity, so that The two magnets 50 are easily displaced relative to each other under the action of magnetic repulsion, thereby causing the sliding effect of the cap shell 20; as shown in FIG. 5f, the sliding medium 42 is a plate made of elastic material and has a plurality of recesses 56 With a plurality of convex portions 58, the concave and convex portions 56, 58 are connected in twos and are staggered, through the elastic deformation of the sliding medium 42 itself, the cap shell 20 produces a sliding effect; finally, as shown in FIG. 5g As shown, the sliding medium 42 has a base material 60 and a plurality of flexible strip structures 62 connected to the base material 60. The characteristics of the flexible strip structure 62 allow the cap shell 20 to produce a sliding effect.

The buffer layer 21 cover 22 cap 20 housing 30 housing the resilient support 32 bar 36 bar 34 of the side frame 38 snap-actuator portion 40 the slider 41 co table cloth

Claims (13)

A safety helmet, comprising: a cap shell; an elastic support provided on the inner circumferential surface of the cap shell; and a sliding aid having a surface cloth and a sliding auxiliary medium, the surface cloth being provided on the internal circumferential surface of the elastic support The sliding medium is covered by the table cloth to allow the cap shell to slide relative to a head of the cap shell when impacted by an external force. The safety helmet according to claim 1, wherein the gliding medium is a fluid. The hard hat according to claim 1, wherein the sliding medium is a plurality of balls. The safety helmet according to claim 1, wherein the gliding medium is two opposing substrates, the two substrates each have a low friction surface, and the low friction surfaces of the two substrates abut each other. The safety helmet according to claim 1, wherein the sliding medium is two opposite magnets, and a magnetic pole opposite to the two magnets has opposite polarity. The safety helmet according to claim 1, wherein the gliding medium has two opposing substrates and a plurality of flexible wires disposed between the two substrates. The safety helmet according to claim 1, wherein the sliding medium is a plate made of an elastic material and has a plurality of concave portions and a plurality of convex portions, and there are two or two between the concave portions and the convex portions Connected and staggered. The safety helmet according to claim 1, wherein the gliding medium has a base material and a plurality of flexible strip structures provided on the base material. The safety helmet according to any one of claims 1 to 8, wherein the cap shell has an outer cover and a buffer layer, the outer peripheral surface of the buffer layer is provided on the inner peripheral surface of the outer cover, and the elastic bracket is detachably provided On the inner peripheral surface of the buffer layer. The safety helmet according to claim 9, wherein the elastic support is provided on the inner circumferential surface of the buffer layer using a fastener. The safety helmet according to claim 10, wherein the elastic bracket has two opposing top frame strips and one side frame strip, the front ends of the two top frame strips are integrally connected to the front end of the side frame strip, and the rear end of the side frame strip An adjuster is connected to adjust the tightness of the side frame strip. The safety helmet according to claim 9, wherein the inner circumferential surface of the buffer layer has a plurality of engaging holes, the outer peripheral surface of the elastic bracket has a plurality of engaging portions, and the engaging portions of the elastic bracket are buckled one by one It is arranged in the clamping hole of the buffer layer. The safety helmet according to claim 12, wherein the elastic bracket has two opposite top frame strips and one side frame strip, the front ends of the two top frame strips are integrally connected to the front end of the side frame strip, and the rear end of the side frame strip An adjuster is connected to adjust the tightness of the side frame strip.

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