JPH0216972Y2 - - Google Patents

Description

[Detailed explanation of the invention] A. Purpose of the invention (1) Industrial application field The present invention relates to a bicycle helmet used by a bicycle rider, and particularly relates to a bicycle helmet that communicates the inside and outside of the helmet in the front-rear center area of the helmet. This invention relates to an improvement in a cap body in which multiple rows of ventilation holes are bored in the front and back direction of the cap body.

(2) Prior art This bicycle helmet was developed in U.S. Pat.
This is already known as disclosed in Japanese Patent No. 33724.

(3) Problems to be solved by the invention On the outer surface of the cap body, the part that receives the strongest dynamic pressure and negative pressure from the wind while driving is the center zone in the longitudinal direction, so multiple rows of ventilation holes are concentrated in this zone. By opening the cap body, the inside of the cap body can be effectively ventilated by the running wind.

However, in conventional helmets, the strength of the helmet body decreases to some extent between the plurality of rows of ventilation holes, so that there is a certain limit even when attempting to narrow the interval between the rows of ventilation holes.

The present invention has been developed in view of the above circumstances, and is designed to prevent the strength of the cap from decreasing even if a plurality of rows of ventilation holes are arranged close to each other in the center area of the cap in the front-rear direction. The purpose is to provide bicycle helmets.

B. Structure of the device (1) Means for solving the problems In order to achieve the above object, the present invention has a pair of left and right grooves extending in the front and back direction across the center zone in the front and rear direction on the outer surface of the cap body. and a large number of recesses extending in the left-right direction and having the ventilation holes opened in the bottom surface on the outer surface of the center zone in the front-rear direction, thereby forming a ladder-like land section in the center zone in the front-rear direction, and at least the front half of the cap body. The bottom surface of the side recess is formed as a slope such that the depth of the recess becomes deeper toward the front.

(2) Effect According to the above configuration, a ladder-like land portion extending in the front-back direction is formed in the center zone in the front-rear direction of the cap body, so this serves as a skeleton and strongly reinforces the center zone in the front-rear direction. Therefore, by providing a large or a plurality of ventilation holes in the bottom surface of each of the many recesses in the central zone in the longitudinal direction, ventilation inside the cap can be improved without sacrificing strength.

Moreover, the bottom surface of the recess on the front half of the cap body is formed into a slope such that the depth of the recess becomes deeper toward the front, so that when the bicycle operator leans forward, the bottom surface of the recess slopes downward. The slope is further strengthened to effectively catch the wind while driving, and to promote the flow of the wind into the vent opening in the bottom surface.

(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 5, a cap body 1 of a bicycle helmet includes a hemispherical shell 2 made of hard reinforced resin, and this shell. A cushion piece 4 made of urethane foam is bonded to a suitable position on the inner surface of the shock absorbing liner 3. Further, the upper ends of the chin belt 5 are fixed to the lower portions of both the left and right sides of the shell 2 by rivets 6.

In the center zone 1a of the cap body 1 in the front-rear direction, there are a large number of ventilation holes 7 ₁ to 7 ₆ in the front-rear direction, which communicate the inside and outside of the cap body 1 .
Two ventilation grooves 8 are provided on the inner surface of the shock absorbing liner 3 in rows and extending in the front-rear direction so as to communicate with the ventilation holes 7 ₁ to 7 ₆ in each row.

Each of the ventilation holes 7 ₁ to 7 ₆ has an oval shape with its major axis directed in the left-right direction of the cap body 1, and a reinforcing and decorative ring 9 is fitted into the opening edge on the shell 2 side.

As clearly shown in FIG. 3, the vents 7 ₁ to 7 ₃ on the front half of the cap body 1 face upward in the front and parallel to each other, and the vents 7 ₄ to 7 ₆ on the rear half face upward in the rear and parallel to each other. The ventilation holes 7 ₁ to 7 ₃ on the front half side and the ventilation holes 7 ₄ to 7 ₆ on the rear half side are formed at an angle.
and are arranged so that they form an obtuse angle of nearly 90°. Thus, the ventilation holes 7 ₁ to 7 ₃ on the front half side become approximately horizontal when the cap body 1 is used in a forwardly tilted manner (see FIG. 6).

Further, on the outer surface of the cap body 1, there are two rows of ventilation holes 7 ₁ -
A pair of left and _right concave grooves 10 are formed on both sides of the front-to-back center zone 1a in which the front-to-back center zone 1a is bored, and a large number of recesses 11, 11, . . . extending in the left-right direction are formed on the outer surface of the front-to-back center zone 1a. Recesses are formed so as to be arranged in the front-rear direction of the cap body 1. In this way, a ladder-like land portion 1 extending in the front-rear direction is provided in the front-rear center zone 1a.
4 is formed. and two rows of said ventilation holes 7 ₁ -
7 ₆ are arranged so as to open at the bottoms of the recesses 11, 11 . Moreover, the bottom surfaces of the recesses 11, 11...
On the front half side of the cap body 1, the depth of the recess is formed as a slope such that it becomes deeper toward the front, and on the rear side, the depth of the recess is formed as a slope that becomes deeper toward the rear.

Further, in the left and right concave grooves 10, 10, auxiliary ventilation holes 12, 12 that open forward are bored in the cap body 1 in line with the ventilation holes 7 ₁ , 7 ₁ at the forefront. A reinforcing and decorative ring 9 is also fitted to the outer opening end of the auxiliary ventilation holes 12, 12.
The inner ends of the shock absorbing liner 3 are communicated with the rearmost ventilation holes 7 ₆ and 7 ₆ through grooves 13 and 13 defined by the cushion pieces 4 on the inner surfaces of both left and right sides of the shock absorbing liner 3 .

Next, the operation of this embodiment will be explained. Now, bicycle operator M is riding the 6th bicycle in order to ride at high speed.
When a forward leaning posture is taken as shown in the figure, the sloping bottom surfaces of the recesses 11, 11... on the front half side of the cap body 1 further increase the forward downward slope, and the ventilation holes 7 ₁ to 7 ₃ on the front half side become even more inclined. is almost horizontal, and the ventilation hole 7 on the rear half side
₄ to 7 ₆ are in a state where they are tilted upward and slightly backward. Therefore, the running wind that hits the front of the cap body 1 flows through the recesses 11, 11...bottom surface and the ventilation hole ₇₁ on the front half side.
7 ₃ , and the pressure increases particularly in the recesses, prompting the flow of running air into the ventilation holes 7 ₁ to 7 ₃ ,
In addition, since the running wind flowing through the rear surface of the cap body 1 effectively applies negative pressure to the ventilation holes 7 ₄ to 7 ₆ on the rear half side, a large amount of the running wind flows into the ventilation holes 7 ₁ to 7 ₃ on the front half side. Through the ventilation groove 8 on the inner surface of the center part of the cap body 1, the ventilation hole 7 on the rear half side
₄ to 7 ₆ to the outside, thereby causing the cap body 1
The interior is well ventilated.

At the same time, running wind also flows in from the auxiliary ventilation hole 12, passes through the groove 13 on the inner surface of the side of the cap body 1, and is discharged to the outside from the ventilation hole ₇₆ at the rear end, thereby improving ventilation inside the cap body 1. It can be carried out.

When pilot M raises his body from a forward-leaning position, cap body 1
becomes horizontal as shown in Figure 3, and the ventilation holes 7 ₁ to 7 ₃ on the front half return to their forward and upward sloping state, so the movement of the traveling wind acting on these ventilation holes 7 ₁ to 7 ₃ is reduced. As a result, from the ventilation holes 7 ₁ to 7 ₃ the cap body 1
The amount of air flowing into the cap body 1 is reduced, and the ventilation of the cap body 1 is moderately weakened.

By the way, since a ladder-shaped land portion 14 extending in the front-back direction is formed in the center zone 1a in the front-back direction of the cap body 1, this serves as a skeleton and strongly reinforces the zone 1a. Therefore, by providing large or plural ventilation holes 7 ₁ to 7 ₆ in the bottom surface of each of the many recesses 11, 11 in the zone 1a, ventilation inside the cap body 1 can be improved without sacrificing strength. be able to.

C. Effect of the invention As described above, according to the invention, on the outer surface of the cap body,
By forming a pair of left and right grooves extending in the front-rear direction across the front-rear center zone and a number of recesses extending in the left-right direction on the outer surface of the front-rear center zone, a ladder-like land portion is formed in the front-rear center zone. As a result, this ladder-like land functions as a skeleton and effectively reinforces the center zone in the front and back direction.This makes the cap body thinner and lighter, making it easier for cyclists to operate. It is possible to provide a helmet suitable for various purposes.

In addition, since ventilation holes are opened in the bottoms of the many recesses in the reinforced front-rear center zone, the strength can be maintained even if the ventilation holes are made large or in multiple numbers. You can satisfy both.

Furthermore, since the bottom surface of the concave portion on the front half of the cap body is formed into a slope such that the depth of the concave portion becomes deeper toward the front, the bottom surface becomes more inclined toward the front as the operator leans forward. It is possible to effectively catch the wind and promote the inflow of running wind into the ventilation hole, which can contribute to improving the ventilation inside the cap body.

[Brief explanation of drawings]

The drawings show one embodiment of the helmet according to the present invention, and FIG. 1 is a perspective view, FIG. 2 is a front view, FIG.
5 and 5 are sectional views taken along lines - and - of FIG. 3, and FIG. 6 is a side view of the device in a forward-inclined state of use. 1...cap body, 1a...front-rear direction center zone, 2...
...Ciel, 3...Shock absorbing liner, 7 ₁ to 7 ₆ ...
Ventilation hole, 10... groove, 11... recess, 14...
land department.

Claims (1)

[Scope of Claim for Utility Model Registration] A bicycle helmet in which multiple rows of ventilation holes 7 ₁ to 7 ₆ are provided in the center zone 1a of the cap body 1 in the front-rear direction to communicate the inside and outside of the cap body 1. , a pair of left and right grooves 10 extending in the front-rear direction across the center zone 1a in the front-rear direction on the outer surface of the cap body 1;
A large number of recesses 1 extend in the left-right direction on the outer surface of the central zone 1a in the front-rear direction and have the ventilation holes 7 ₁ to 7 ₆ opened at the bottom surface.
1, the central zone 1 in the longitudinal direction is formed.
A ladder-like land portion 14 is formed in the cap body 1, and the bottom surface of the recessed portion on at least the front half side of the cap body 1 is formed into a slope such that the depth of the recessed portion becomes deeper toward the front. Bicycle helmet.