JPS6040521B2 - helmet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a helmet having a double structure including an outer wall member and an inner wall member and having a hollow portion.

Conventionally, as an example of a helmet, there is one in which the plastic outer and inner walls that make up the main body are folded back into an inverted bowl shape in one process using a special blow molding method.
In the case of using a parison, it is necessary to use a PP material or a PE material, which has the problem that sufficient strength against impact cannot be obtained, but safety is low.

Another conventional example is one in which a transparent plastic outer cover is placed over the cap body to form a gap between the outer cover and the cap body, and the outer cover and the lower green of the cap body are connected by a U-shaped ring. However, there was a problem in that the U-shaped ring easily came off when subjected to external impact. In view of this, the present invention molds the outer wall member and the inner wall member separately, provides a step at the lower part of the inner wall member to form an expanded iron joint part, and smuggles the joint part to the inner surface of the outer wall member. A rubber ring fixing part is provided on the lower edge of the outer wall member or the inner wall member, and an annular protrusion is formed on the outer peripheral edge of the rubber ring fixing part, and the outer wall member and the inner wall member are connected to each other. By attaching the rubber ring that wraps around both tightly attached lower ends to the rubber ring fixing part, the rubber ring is reliably prevented from falling off, improving impact resistance, and when molded, it has the highest strength and elasticity among thermoplastic materials. We provide a helmet that can be manufactured at low cost by arbitrarily selecting and using various materials with excellent properties, and by using the previously provided stackable mold of Tsubaki Kosho No. 50-5216, the outer wall surface can be molded at once. This is what I am trying to do. Furthermore, the objective is to provide a safety helmet that improves the cushioning effect in the event of a collision by forming protrusions and ventilation holes on the inner wall member, and also has a ventilation function when in use. be.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be described below with reference to the drawings.

(Example 1) As shown in FIGS. 1 and 2, reference numeral 1 designates the main body of an egg-shaped motorcycle helmet 2, which is composed of an outer wall member 3 and an inner wall member 4, and has a rubber ring around the lower end. 5 is wearing a pig.

Both the outer wall member 3 and the inner wall member 4 are made of plastic, and the outer wall member 3 has a thickness of approximately 3 mm.
The side and inner wall members 4 are made as thin as approximately one willow, and are formed into an inverted bowl shape by direct pressure molding or injection molding. As the material for the outer wall member 3 and the inner wall member 4, thermoplastic materials having particularly excellent strength and elasticity are used, such as aluminum alloy, polycarbonate, PP material, etc. The lower part 6 of the inner wall member 4 is expanded via a step 7 to become a competitive part 6a with the outer wall village 3, and the upper part of the lower part 6 has a certain gap with the outer wall member 3, forming a hollow part 8. Further, a flange 9 is formed at the lower end of the inner wall member 4 and projects outward at a substantially right angle. ing. The protruding step portion 10 engages with the lower end of the outer wall member 3.
An annular projection 12 is formed on the outer periphery of the rubber ring fixing portion 11, which is formed in a concave shape and projects upward. Furthermore, several convex portions 13 are formed on the upper part of the inner wall member 4 to protrude outward (into the hollow portion 8). Eggplant. Step 7
A plurality of ventilation holes 14 are formed in the vertical direction, and the hollow part 8 communicates with the outside. Therefore, after forming the outer wall member 3 and the inner wall member 4 separately, the lower end of the outer wall member 3 is iron-fitted into the recess of the protruding step portion 10, and a post-adhesive agent is applied to the iron-joint portion 6a, or a The inner and outer wall members 4 are welded using frequency, ultrasonic waves, etc.
．． 3 constitutes the main body 1, and a rubber ring 5 is elastically fixed from below to the rubber ring fixing part 11 and the annular projection 12, and the rubber ring 5 wraps both lower ends of the outer wall member 3 and the inner wall member 4. .

Therefore, in the helmet main body 1, the outer wall member 3 and the inner wall member 4 are firmly integrated at the lower end of the main body by the rubber ring 5. In this helmet 2, in the event of a collision, the impact force is dispersed to the surrounding area through the convex part 13 of the inner wall part 4, and the air in the hollow part 8 is not exhausted all at once from the ventilation hole 14, so that the outer wall part 3. The inner wall member 4 and the hollow part 8 have a three-layer cushioning effect, and during normal use, the air heated in the hollow part 8 by the outside temperature or body temperature is ventilated through the ventilation holes 14.

(Example 2) In this example, as shown in FIGS. 3 and 4, a flange 15 is formed at the lower end of the outer wall member 3, and the protruding step portion 16 constituting the flange 5 faces inward. The lower end of the inner wall member 4 is attached by iron using the protruding step portion 16 as a hanging step.

Further, the rubber ring fixing portion 17 protrudes outward, and an annular projection 18 is formed on the outer periphery to protrude upward. Note that the inner wall member 4 does not have any protrusions or ventilation holes, and the rest is the same as in the first embodiment. The rubber ring fixing parts 11 and 17 in Examples 1 and 2 are not limited to those in the embodiments, and can be changed into various shapes that can fix the rubber ring 5.

The examples shown in FIGS. 5 and 6 are not directly related to the present invention, but are disclosed as an example of a helmet.

That is, 19 is a main body of the work helmet 20, and is composed of an outer wall member 21 and an inner wall member 22.
The outer wall member 21 and the inner wall member 22 are both made of a thermoplastic material with excellent strength and elasticity (for example, polycarbonate, ABS, or PP material that is particularly resistant to impact), and are made separately from each other, with the outer wall member 21 being thicker and the inner wall member being thicker than the inner wall member. 22 is formed into a thin inverted bowl shape by injection molding or the like. The lower part 23 of the inner wall village 22 is expanded via a step 24 and becomes a lateral joint part 23a with the outer wall member 21, and the upper part of the lower part 23 is the outer wall village 21.
A hollow portion 25 is formed with a certain gap. Further, the front lower edges of the outer wall and inner wall members 21 and 22 are largely curved and protruded forward to form an eave portion 26, and the rear lower edges are slightly curved and protruded rearward to form a small protrusion 27. A protruding step portion 28 is provided to protrude inward, the lower end of the inner wall member 22 is iron-bonded or bonded, and both members 21 and 22 are bonded or welded together at a portion of the lower side of the inner wall surface. . Inside the main body 19, an interior material 29 that acts as a cushion is suspended by a cord part 30, and includes an overhead twill ring 31, a cloth band 32 connected to the overhead twill ring 31, and a chin slit. 33, a sponge cushion 34, and a tightened thin strip 35 of the cloth band 32.

The detail material 30 has a large number of small holes 36 passing through the inside and outside of the main body 19.
and the base of the cloth band 32 alternately to hold the abutment ring 31 below the step 24. As described above, according to the helmet of the present invention, the outer wall member and the inner wall member are formed separately, and their lower ends are bonded or welded together to integrate them, so that thermoplastic materials have particularly high strength and strength.
Since any elastic material such as ABS or polycarbonate material can be used, it can be made to have sufficient rigidity against impact, and the steel part at the bottom of the inner wall member can be connected to the outer wall member. Because of the tight seal, the rigidity of the lower part of the main body is high, and even if the lower part of the main body is slightly deformed due to impact, the thickness of the lower part of the main body where the outer wall member and inner wall member are tightly pressed remains constant, and the lower part of the main body has an annular protrusion. By providing a rubber ring fixing part, the rubber ring attached to the bottom of the main body does not fall off, and the user's head can be reliably protected, significantly improving safety. It is possible to fully demonstrate the effectiveness of various types of helmets.

In addition, by providing a protrusion on the inner wall member, the rigidity of the inner wall member is increased, and the force applied to the outer wall member can be dispersed to the inner wall member, and the impact on the user during use can be significantly reduced. Providing ventilation holes allows ventilation within the main body, prevents high temperatures above the head, and improves quality.

[Brief Description of the Drawings] Figures 1 to 4 illustrate embodiments of the present invention, Figures 1 and 2 illustrate Embodiment 1, and Figure 1 is a partial cross section of a helmet. A side view, FIG. 2 is an enlarged sectional view of the main parts, FIGS. 3 and 4 show Example 2, FIG. 3 is a partially sectional side view of the helmet, and FIG. 4 is an enlarged sectional view of the main parts. , 5 and 6 show another embodiment of the present invention, in which FIG. 5 is a partially sectional side view of the helmet, and FIG. 6 is a bottom view thereof. 1,19...Body, 2,20...Helmet, 3,21
...Outer wall member, 4, 22...Inner wall member, 5...Rubber ring, 6,23...Lower, 6a, 23a...・Iron joint part, 7, 24...
...Step, 8,25...Hollow part, 9,15.
...Flange, 10, 16, 28...Protruding step part, 11, 17...Rubber ring fixing part, 12,
18...Annular projection, 13...Protrusion, 1
4...Vent hole, 29...Interior material, 30
...Detail materials. *Figure 2 Figure 3 Compiled Figure Figure 6

Claims (1)

[Scope of Claims] 1. The plastic outer wall member and inner wall member that constitute the main body are separately molded into an inverted bowl shape, with the outer wall member being thick and the inner wall member being thin, and the lower part of the inner wall member being formed with a step. A protruding step part that is expanded to form a fitting part that tightly fits with the outer wall member, and the lower end of the other engages with the lower end periphery of either the outer wall member or the inner wall member, and a rubber ring fixing part that protrudes outward. An annular projection projecting upward is formed on the outer peripheral edge of the rubber ring fixing part, the lower ends of the outer wall member and the inner wall member are glued or welded, and a fixed part is formed upwardly extending from the fitting part. 1. A helmet, characterized in that a hollow portion is formed, and a rubber ring that wraps both lower end portions of an outer wall member and an inner wall member is fitted into the rubber ring fixing portion. 2. The inner wall member is provided with a plurality of convex portions that protrude outward and come into contact with the inner surface of the outer wall member, and the step is provided with a plurality of downward ventilation holes. helmet.