JPH0826481B2 - Ventilation device for riding helmet - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilator for a riding helmet in which an outlet port for communicating with the inside of the cap body and sucking the inside air of the cap body is opened on the outer surface of the top of the cap body.

[0002]

2. Description of the Related Art Ventilation devices for such riding helmets are
For example, it is already known as disclosed in Japanese Utility Model Laid-Open No. Sho 63-56218.

[0003]

In such a conventional ventilating device for a riding helmet, a cap body is provided with an outlet cover that covers the outer opening of the outlet port and opens only the rear end, and the running wind is The negative pressure generated at the rear end of the outlet cover by flowing on the outer surface of the outlet cover is utilized to suck out the inside air from the outlet port. However, even with such a device, a sufficient negative pressure cannot be applied to the outlet port, and the ventilation effect remarkably deteriorates especially at low speed running. It is considered that this is because the ceiling portion of the outlet cover serves as a resistance to the transmission of the negative pressure generated at the rear end of the outlet cover to the outlet port.

The present invention has been made in view of the above points, and a negative pressure can be effectively applied to an outlet port by utilizing the flow of traveling wind, and a good ventilation performance can be exhibited. It is intended to provide a ventilation device for a helmet.

[0005]

In order to achieve the above object, the present invention provides a cap body including an air flow dividing body composed of a pair of left and right guide walls connected to each other so as to open in a V shape toward the rear of the cap body. The outer surface of each guide wall
Is formed on a scooping surface inclined rearward and upward, the space between both guide walls is opened upward and rearward, and the outlet port is opened in the narrowed portion therebetween.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of the helmet of the present invention, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. 3 is a sectional view taken along line 3-3 of FIG. In these drawings, the cap body 1 is configured as a full-face type having a chin cover portion 1a immediately below the window hole 2 on the front surface thereof, and both ends of the shield plate 3 are opened and closed so as to open and close the window hole 2. It is pivotally supported on both left and right sides.

On the outer surface of the cap body 1, a pair of left and right inlet ports 4 and 4 opening directly above the window hole 2, a pair of left and right first outlet ports 5 and 5 opening to the top, and openings to the lower surface of the rear portion. Left and right pair of second outlet ports 6, 6
And a pair of left and right ventilation passages 7, 7 that connect the ports 4, 5, 6 on the same side are formed in the wall of the cap body 1.

The cap body 1 comprises a shell 10 made of FRP and a shock absorbing liner 11 made of foamed styrene fitted on the inner surface of the shell 10, and the inner surface of the liner 11 is made of urethane foam. A top pad 12 and a fit pad 13 which are made of air and have air permeability are attached.

FIG. 4 is an exploded perspective view of the shock absorbing liner. As shown in the figure, the shock absorbing liner 11 includes 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. Is divided into and Main liner 14
As shown in FIGS. 2 to 4, the liner body 14 ₁ has a groove-shaped recess 16 extending along the longitudinal centerline of the cap body 1 on the upper surface, and an outer layer 14 ₂ fitted into the recess 16. It is divided into, the liner body 14 _1, part 14 ₁ a constituting the recess 16 the bottom wall is the inner layer. And Thus, the outer layer 14 ₂ is the inner layer 14 ₁ a, i.e. than the liner body 14 ₁ is set to a small expansion ratio, thus becomes denser than the liner body 14 _1.

[0011] Between the inner layer 14 ₁ a and opposing surfaces of the outer layer 14 _2, grooves 17 and 17 constituting the ventilation passage 7, 7; 1
8 and 18 are formed respectively, and the inner layer 14 ₁ a,
A plurality of vent holes 19, 19 for communicating the respective air passage 7 to the inner surface of the liner main body 14 ₁ ... are provided. Then, each of the inlet port 4, so as to communicate with the front end of the corresponding air passage 7, a through hole 4a extending through the front wall of the shell 10, the notch provided in the recess 16 the front end wall of the liner body 14 ₁ 4b
(Fig. 4) and. Further, each of the first outlet ports 5 is formed of through holes 5a and 5b penetrating the shell 10 and the top of the outer layer 14 ₂ so as to communicate with the corresponding intermediate portion of the ventilation passage 7. Further, each of the second outlet ports 6 is composed of a groove formed in the lower portion of the rear surface of the liner body 14 ₁ so as to communicate with the rear end portion of the corresponding ventilation passage 7.

The left and right inlet ports 4 and 4 are provided with a common inlet shutter 2 attached to the shell 10.
The distance between the two is set to be relatively small so that it can be opened and closed at 0. Therefore, although the distance between the front end portions of the left and right ventilation passages 7, 7 communicating with both the inlet ports 4, 4 is set to be narrow as described above, the both ventilation passages 7, 7 are rearward from both the inlet ports 4, 4. The distance is increased as the distance increases, so that ventilation is generated in a wide range within the cap body 1.

FIG. 5 is an enlarged view of part 5 in FIG. 3, and FIG. 6 is 6 in FIG.
FIG. 7 is a sectional view taken along line 7-7 of FIG. These drawings and as shown in FIG. 2, the top outer surface of the cap body 1, a pair of left and right air current split bodies 25, 25 are butt set to correspond to the first outlet port 5 and 5 of the left and right. Each air flow division 2
5 is a pair of left and right guide walls 2 whose front ends are integrally connected to each other.
6 and 26, the two guide walls 26, 26 are arranged so as to form a V-shape toward the rear at an acute angle, and the space between the two guide walls 26, 26 is opened upward and rearward. .
The outer surface of each guide wall 26 is formed as a scooping surface 26a that is inclined rearward and upward. And this airflow division 25
The corresponding first outlet port 5 has two guide walls 2
It is arranged so as to come to the narrowed portion between 6, 26.

Further, the airflow splitting body 25 is formed with a thin bottom wall 27 for integrally connecting the guide walls 26, 26 in the substantially front half thereof, and the bottom wall 27 has the first outlet port 5 of the first outlet port 5. A through hole 28 facing the opening and an elongated hole 29 located behind the through hole 28 are provided. Also the bottom wall 27
A guide groove 30 extending between the through hole 28 and the long hole 29 is formed on the lower surface of the guide groove 30, and a plate-shaped outlet shutter 31 that opens and closes between the first outlet port 5 and the through hole 28 is formed in the guide groove 30. As shown in FIG. 5, the knob 3 is slidably fitted and is continuously provided on the rear upper surface of the shutter 31.
The fully closed position C of the outlet shutter 31 is regulated by the front end of 2 contacting the front end wall of the elongated hole 29, and the rear end of the outlet shutter 31 contacts the rear end wall of the elongated hole 29. The fully open position O is restricted.

The airflow divider 25 is integrally molded of synthetic resin and fixed to the shell 10 with a double-sided adhesive tape (not shown) and a screw 33. At that time, the screw 33 is attached to the bottom wall 27.
Of the knob 3 when the outlet shutter 31 is moved to the fully open position O.
It is supposed to be covered by 2.

Next, the operation of this embodiment will be described.

For example, when a motorcycle operator operates the vehicle with the hat body 1 mounted and the inlet ports 4 and 4 and the first outlet ports 5 and 5 open, the traveling wind is directed to the inlet ports 4 and 4. Dynamic pressure is exerted, and other traveling wind flows on the outer surface of the cap body 1 to generate negative pressure in the first and second outlet ports 5 and 6. Due to the action of such dynamic pressure and negative pressure, the inlet ports 4, 4
The traveling wind flows through the ventilation paths 7, 7 from the first to the second outlet ports 5, 6. Then, as shown by the arrow in FIG. 3, traveling air is introduced from the ventilation passage 7 into the shock absorbing liner 11 through the ventilation hole 19 near the inlet port 4, and the warm inside air of the liner 11 is discharged through the other ventilation holes 19. Since the air is sucked up into the ventilation passage 7, the inside of the cap body 1 is ventilated.

By the way, when the air flow of the traveling wind flowing from the front to the rear on the outer surface of the top of the cap body 1 hits the air flow dividing body 25,
It is divided into right and left in Rukoto accelerate the flow rate by both the guide walls 26, 26 as indicated by an arrow A in FIG. 6, both the guide walls 26,2
Moves on both sides of the V-shaped space formed between 6 at high speed
And also with scooped as indicated by arrow B some of the airflow in FIG. 5 by rake face 26a of the guide wall 26, the V
It moves just above the letter space at high speed . Therefore, a large negative pressure is generated in the V-shaped space between the guide walls 26, 26 , particularly in the narrowed portion, which directly and strongly acts on the first outlet port 5 opening in the narrowed portion. because ing to act on, the ventilation effect is effectively promoted.

The first and second outlet ports 5, 5
Since 6 is provided on the top and the lower end of the rear of the cap body 1, no matter how the forward tilt angle of the cap body 1 changes due to the change in the posture of the operator, the first and second outlet ports 5, 6 are provided.
A strong negative pressure can always be applied to either one of the six members 6, so that the inside of the cap body 1 can be constantly ventilated.

Thus, the degree of ventilation in the cap body 1 is determined by the inlet shutter 20 and the outlet shutters 31 and 3.
It is possible to make fine adjustments by closing any one or two of 1, or closing all of them.

In the above embodiment, various design changes can be made without departing from the gist of the present invention. For example, it may be provided grooves 17 or 18 on only one of the opposing surfaces of the inner layer 14 ₁ a and the outer layer 14 ₂ as the ventilation passage 7. A shutter for opening and closing the second outlet port 6 may also be provided. It is also applicable to helmets of other types such as jet type.

[0022]

According to the present invention as described above, according to the present invention, projecting an air flow split body made of a pair of left and right guide walls linked together to open in a V-shape toward the cap body behind the top outer surface of the cap body Do
In addition, the outer side surface of each guide wall was inclined rearward and upward.
It was formed on the scooping surface, and the space between both guide walls was opened upward and backward, and the outlet port was opened in the narrowed part between them, so the outer surface of the top of the cap body was moved from the front to the rear when running.
The air flow of the traveling wind to the left and right guide walls of the air flow divider is
Between the guide walls by increasing the flow velocity by dividing the
Move at both sides of the V-shaped space formed at high speed,
Also, part of the airflow is scooped up by the scooping surface outside each guide wall.
While being struck, just above the V-shaped space again at high speed
The resulting movement between the two guide walls
A large negative pressure is generated in the V-shaped space, especially in the narrowed portion,
Directly and strongly to the first outlet port that opens to the stenosis
Ventilation of the port because it can be applied to force
Is effectively promoted, the inside air of the cap body can be sucked out even when the vehicle is traveling at a relatively low speed, and the ventilation performance can be improved.

[Brief description of drawings]

FIG. 1 is a side view of a riding helmet equipped with the ventilation device 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 of the helmet.

FIG. 5 is an enlarged view of part 5 in FIG.

6 is a view on arrow 6 of FIG.

7 is a sectional view taken along line 7-7 of FIG.

[Explanation of symbols]

 1 ... Hat body 5 ... Outlet port 25 ... Airflow divider 26 ... Guide wall

Claims (1)

[Claims] 1. Ventilation of a riding helmet, wherein an outlet port (5) communicating with the inside of the cap body (1) and sucking the inside air of the cap body (1) is opened on the outer surface of the top of the cap body (1). In the device, an airflow divider (2) including a pair of left and right guide walls (26) connected to each other so as to open in a V shape toward the rear of the cap body (1).
5) project on the outer surface of the top of the cap body (1) and
A scooping surface in which the outer surface of the guide wall (26) is inclined rearward and upward.
(26a), the guide wall (26) is opened between the guide walls (26) upward and backward, and the outlet port (5) is opened in the narrowed portion between the guide walls (26). .