JPH06240508A - Helmet headgear - Google Patents

Abstract

PURPOSE:To provide a helmet headgear so designed that the impact-absorbing liner inside a shell is divided into inside and outside liners and a reinforcing textile fabric is put in between them to improve resistance to penetration without the need for increasing shell thickness. CONSTITUTION:An impact-absorbing liner 11 engagedly fitted inside a shell 10 is divided into liner 140 outside the headgear and liner 141 inside the headgear. Air-permeable reinforcing textile fabric 18 is then put in between these outside and inside liners and jointed monolithically using e.g. an adhesive.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention is mainly applied to motorcycles,
The present invention relates to a hat body of a helmet used by occupants of a vehicle such as a competition car, and more particularly to an improvement in which a shock absorbing liner is fitted in a shell.

[0002]

2. Description of the Related Art It is generally said that the penetration resistance of a cap body depends largely on the strength of the shell as compared with the impact absorption performance.
Therefore, conventionally, in order to improve the penetration resistance of the cap body, the amount of reinforcing fibers to be combined with the synthetic resin of the shell has been increased.

[0003]

However, when increasing the amount of the reinforcing fiber, it is inevitably necessary to increase the amount of the synthetic resin impregnated in the fiber, which increases the thickness of the shell and increases the thickness of the shell. This will lead to an increase in body weight.

The present invention has been made in view of such circumstances, and an object thereof is to provide the above-mentioned cap body which can exhibit high penetration resistance without increasing the thickness of the shell.

[0005]

In order to achieve the above object, the present invention divides a shock absorbing liner into an outer liner outside the cap body and an inner liner inside the cap body, and between the outer liner and the inner liner. The first feature is that a reinforcing cloth made of reinforcing fibers is interposed and fixed.

A second feature of the present invention is that a reinforcing cloth made of reinforcing fibers is interposed and fixed between the shell and the impact absorbing liner.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, the cap body 1 is of a full-face type having a chin cover portion 1a immediately below the window hole 2 on the front surface thereof. Both ends of the shield plate 3 are pivotally supported by the left and right side walls of the cap body 1 so as to open and close the window hole 2.

On the outer surface of the cap body 1, there are provided a pair of left and right inlet ports 4 that open directly above the window hole 2 and a pair of left and right outlet ports 5 that open at the lower end of the rear portion. An air passage 6 that connects between the outlet port 5 and the outlet port 5 is formed in the cap body 1. A single shutter 7 that can simultaneously open and close the left and right inlet ports 4 is provided on the outer surface of the cap body 1.

As shown in FIG. 2 and FIG. 3, the cap body 1 is made of a composite resin F made of carbon fiber or glass fiber.
It is composed of a shell 10 made of RP and a shock absorbing liner 11 made of foamed styrene fitted on the inner surface of the shell 10. The inner surface of the liner 11 is made of urethane foam and has a breathable top pad 12 and Fit pad 13
Is attached.

As shown in FIG. 4, the shock absorbing liner 11
Is divided into a main part liner 14 fitted to the main part of the shell 10 excluding the chin cover part 1 a and a chin cover part liner 15 fitted to the chin cover part 1 a of the shell 10. Further, the main part liner 14 is divided into an outer liner 14o on the outside of the cap body 1 and an inner liner 14i on the inside of the cap body 1 at a central portion along the longitudinal centerline of the cap body 1. The air passage 6 is formed on the facing surfaces of the outer and inner liners 14o and 14i.
The concave grooves 6a and 6b forming the inner liner 14i are formed in the inner liner 14i.
A plurality of ventilation holes 17 (see FIG. 3) communicating with the inner surface are provided.

A reinforcing woven fabric 18 as a breathable reinforcing fabric composed of reinforcing fibers such as carbon fibers and aramid fibers is provided between the facing surfaces of the outer and inner liners 14o and 14i.
And is fixed to one of the facing surfaces with an adhesive or an adhesive tape.

The outer liner 14o is the inner liner 14o.
The foaming multiple is set smaller than i. For example, the outer liner 14o is 20 and the inner liner 14i is 25. Therefore, the outer liner 14o has a higher density than the inner liner 14i.

Next, the operation of this embodiment will be described.

Even if an angular impact body hits the crown of the cap body 1 and penetrates the shell 10, most of the energy is consumed for the destruction of the shell 10 at that time. Even if an attempt is made to penetrate the absorption liner 11, the reinforcing woven fabric 18 interposed and joined between the outer and inner liners 14o and 14i resists and the penetration of the impact body into the impact absorption liner 11 can be prevented. Thus, the penetration resistance performance of the cap body 1 can be significantly improved without increasing the synthetic resin of the shell 10, that is, without increasing the wall thickness of the shell 10.

When an impact force is applied to a relatively wide area of the crown of the cap body 1, the impact absorbing liner 11 absorbs a relatively small impact energy by the low-density inner liner 14i, so that the impact absorbing liner 11 has a high density. Since the outer liner 14o absorbs a relatively large impact energy, the transmission of the impact force to the user's head can be effectively mitigated.

Next, for example, if the operator of the motorcycle wears the cap body 1 on the head and opens the shutter 7 to open the inlet port 4 during traveling, the traveling wind generated by traveling of the vehicle is generated. Negative pressure generated in the rear part of the cap body 1 acts on the outlet port 5 by exerting dynamic pressure on the inlet port 4 and running wind flowing on the outer surface of the cap body 1. Due to such dynamic pressure and negative pressure, traveling wind flows from the inlet port 4 toward the outlet port 5 through the ventilation passage 6, and according to this flow, as shown in FIG. 3, the vent holes 17 close to the inlet port 4 are provided. Then, the traveling wind is introduced from the ventilation passage 6 into the shock absorbing liner 11, and the warm air in the liner 11 is sucked into the ventilation passage 6 through the other ventilation holes 17.
The inside is ventilated. At that time, since the reinforcing woven fabric 18 arranged so as to cross the ventilation passage 6 has air permeability, it does not hinder the air flow as described above.

FIG. 5 shows a second embodiment of the present invention, in which a reinforcing woven fabric 18 similar to that of the previous embodiment is interposed between the facing surfaces of the shell 10 and the shock absorbing liner 11, and the facing surfaces thereof are It is joined to one side. Shock absorption liner 11
An air passage 6 connecting between the inlet port 4 on the front surface of the cap body 1 and the outlet port 5 on the lower rear end of the cap body 1 is formed as a concave groove on the inner surface of the.

In the figure, parts corresponding to those of the previous embodiment are
The same reference numerals are given.

The test results regarding the penetration resistance of the second embodiment are shown below.

<Test Method> 1) Testing machine: Testing machine specified in JIS T8133-82 2) Striker (impact body) drop height: 2.5 to 3.5 m 3) Test site: Top of sample cap body

[0022]

[Table 1]

[0023]

[Table 2]

As is apparent from the above test, the second embodiment also improves the penetration resistance of the cap body 1 without increasing the wall thickness of the shell 10. Further, this embodiment can be easily applied to the hat body 1 of the existing helmet.

[0025]

As described above, according to the first feature of the present invention, the shock absorbing liner is divided into the outer liner outside the hat body and the inner liner inside the hat body, and is strengthened between the outer liner and the inner liner. Since the reinforcing cloth made of the fibers for use is interposed and fixed, the reinforcing cloth greatly contributes to the improvement of the penetration resistance performance of the cap body without combining the reinforcing cloth with the shell. Therefore, since it is not necessary to increase the thickness of the shell, only the weight of the reinforcing cloth is added to the weight of the cap body, and the increase in weight is negligible. Further, since the shock absorbing liner is divided into the outer liner and the inner liner, it is possible to improve the shock absorbing performance by making the foaming multiples different from each other.

Further, according to the second aspect of the present invention, since the reinforcing cloth made of the reinforcing fiber is interposed and fixed between the shell and the impact absorbing liner, the penetration resistance of the cap body is improved as in the first aspect. It has the advantage that it can bring about an improvement and can also be easily applied to existing hats.

[Brief description of drawings]

FIG. 1 is a side view of a helmet cap body that is a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line 2-2 of FIG.

3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is an exploded perspective view of a shock absorbing liner in the cap body.

FIG. 5 is a vertical sectional side view of a hat body of a helmet which is a second embodiment of the present invention.

[Explanation of symbols]

 1 ... Hat body 10 ... Shell 11 ... Impact absorption liner 14o ... Outer liner 14i ... Inner liner 18 ... Reinforcing cloth

Claims (2)

[Claims] 1. A shock absorbing liner (1) in a shell (10).
In a helmet cap body in which 1) is fitted, a shock absorbing liner (11) is provided outside the cap body (14).
o) and an inner liner (14i) inside the cap, and a reinforcing cloth (18) made of reinforcing fibers is interposed and fixed between the outer liner (14o) and the inner liner (14i). , Helmet cap. 2. A shock absorbing liner (1) in the shell (10).
A helmet cap body in which 1) is fitted, characterized in that a reinforcing cloth (18) made of reinforcing fibers is interposed and fixed between the shell (10) and the shock absorbing liner (11). Hat body.