JP2610795B2 - Helmet ventilation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation device for a helmet worn by a driver to protect the head when riding a motorcycle or a four-wheeled vehicle.

[0002]

2. Description of the Related Art In general, as a helmet worn by a driver when riding a motorcycle or a four-wheeled vehicle, there are a full face type helmet, a jet type helmet, and the like.
Especially in the case of the former full-face type helmet, the head is slippery, and if the transparent shield that opens and closes the front window is closed, the head becomes stuffy due to the heat and it becomes extremely uncomfortable. doing. Therefore, in this type of helmet, various helmets equipped with a ventilation device for ventilating the inside of the helmet have been developed.

[0003] There are two types of ventilation methods: a method of eliminating the stuffiness and heat of the head by taking in the outside air (air) into the helmet; a method of ventilating by discharging the air inside the helmet; And ventilating by discharging the internal air. Japanese Utility Model Publication No. 6-406 discloses a ventilating device. According to the invention, an air passage is formed near the top of the outer surface of the cap of the helmet body, near the top of the cap, and penetrates the cap body and the buffer to open into the helmet body. Is fixed to the base plate, and a through-hole matching the communication hole is formed in the bottom of the base plate, and a guide duct that defines a flow path having a substantially L-shaped cross section is attached to the base plate. The communication hole is made openable and closable by sliding in the front-rear direction, and air supply into the helmet body (introduction of outside air) by rotating the guide duct with the communication hole aligned with the through hole. The exhaust of the air in the helmet body can be switched.

[0004]

Problems to be Solved by the Invention
The ventilation device proposed in Japanese Patent Publication No. 06 switches between air supply and exhaust by rotating the guide duct, and slides the guide duct in the front-rear direction in the state of the air supply and exhaust to supply air. Switching between air supply stop, exhaust, and exhaust stop is performed.
By the way, the operation of discharging the air inside the helmet with the opening side of the guide duct facing rearward is such that air flows through the outer surface of the helmet in the forwardly inclined posture due to running, and thereby, the shadow generated in the rearward opening portion of the duct. Since the air inside the helmet is sucked and exhausted by the pressure, it is hard to say that sufficient exhaustion (ventilation) is performed.

[0005] In addition, since the above-mentioned duct is closed on the opposite side of the opening, when set backward for exhaust, the airflow flowing on the outer surface of the helmet hits the duct protruding from the surface of the helmet, Since it flows along the outer surface, there is a problem that the flow of air is disturbed.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to prevent the air flow flowing on the outer surface of the helmet from being disturbed, and An object of the present invention is to provide a ventilator capable of efficiently performing air discharge ventilation.

[0007]

Means for Solving the Problems In order to achieve the above object, the technical means taken by the present invention is to open the inside of the helmet body through the cap body and the buffer on the outer surface of the helmet body. A ventilation path is opened, and a guide duct for defining a flow path from the front to the rear of the cap body is mounted on the ventilation path on the outer surface of the cap body, and the flow path inside the duct is left and right inside the guide duct. A rectifying piece that opens and closes the opening of the ventilation path is slidably mounted in the front-rear direction, and the rear end edge of the rectifying piece is located at the front edge of the opening when the rectifying piece is positioned at the position that opens the opening of the ventilation path. It is characterized by being located.

The above-mentioned guide duct is a molded article of synthetic resin, which is adhered and fixed to the outer surface of the cap with an adhesive so that when an external force acts on the duct, the duct is easily separated and separated from the cap. . Further, the front side of the straightening piece suspended and held in the guide duct is formed in a triangular or arc shape so that the air flow in the guide duct is divided into right and left. Further, the mounting position and the number of the above-mentioned guide ducts are one at a position that functions effectively in the forwardly inclined riding posture, for example, one at the center of the top or one at the left and right positions sandwiching the center of the top (two in total). ).

[0009]

According to the above-described means, when the airflow accompanying the traveling flows into the duct from the front opening of the guide duct, the airflow is divided into two parts by the rectifying piece, and the flow velocity is increased. As a result, the suction force acting on the ventilation path located on the rear side of the rectifying piece increases, and the air in the helmet is sucked and exhausted. Also, if the rectification piece suspended in the guide duct is slid backward to close the opening of the ventilation path, the suction and exhaust of the air in the helmet is stopped, and the air flow is divided into right and left by the rectification piece and guided. Go through the duct.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the appearance of a helmet equipped with a ventilating device according to the present invention, and a riding posture of a full-face type helmet body A leaning forward. The ventilator B is provided at a position facing the airflow caused by traveling. The ventilator B has a cap body 1 formed of a material such as FRP constituting a full face type helmet main body A, and a polyethylene foam fitted inside the cap body 1 or a shock absorbing performance equal to or more than this. Buffer 2 made of material having
A guide duct 5 on a tunnel whose front and rear ends are opened and fixed on an opening 4 on the cap 1 side of the vent path 3 is adhered and fixed to the inside of the guide duct 5. A rectifying piece 6 is slidably mounted in the front-rear direction.

The above-described guide duct 5 is formed of a synthetic resin material into a substantially trapezoidal flat shape at one end (the side facing the traveling wind) and wide at the other end. The adhesive is fixed on the surface with an adhesive, and the adhesive strength is easily adjusted when an external force acts on the guide duct.
The guide duct protruding from the outer surface of the cap body 1 when it falls down, for example, is separated from the cap body 1 so as not to hinder the sliding of the helmet.

The straightening piece 6 attached to the inside of the guide duct 5 has a shape in which the front end is sharpened by a synthetic resin material and the rear end edge is cut straight, or FIG.
The shape of the isosceles triangle (see (a)), the shape of the shogi piece in plan (see (b)), and the shape in which the tip is an arc and the trailing edge is cut straight ((c) And the right and left corners of the rear end edge are angled, and such a rectifying piece 6 has a mounting groove 7 mounted on the upper surface thereof in a guide groove 8 formed in the upper surface of the guide duct 5 in the front-rear direction. The upper and lower openings 4 of the ventilation path 3 can be opened and closed by sliding back and forth, and the rectifying piece 6 moves left and right in the guide duct 5. The flow rate of the air passing between the flow straightening piece 6 and the guide duct 5 is increased.

When the front and rear sliding range of the rectifying piece 6 is located in front of the upper surface opening 4 of the ventilation path 3, the rear end edge of the rectifying piece 6 is substantially in contact with the front side of the hole edge of the opening 4. And the rear position is a position at which the opening 4 is closed.
In addition, the sliding mechanism for the rectifying piece 6 prevents the rectifying piece 6 from moving backward and closing the opening 4 by running wind hitting the rectifying piece 6 positioned at a position where the opening 4 is opened. , A lock mechanism or the like for maintaining each set state may be provided.

In the above-described ventilator, when the mounting rod 7 is operated to position the rectifying piece 6 in front of the guide groove 8, the upper opening 4 of the ventilation path 3 is opened. Therefore, the traveling wind accompanying the traveling enters from the front entrance of the guide duct 5, and the flow velocity is increased in the narrow passages 9 and 9 ′ divided into right and left by the rectifying piece 6, and exits from the rear exit. Negative pressure increases due to an increase in flow velocity at the opening 4 where the front side of the hole edge contacts the rear end of the rectifying piece 6, and the air in the helmet is sucked by the action of the negative pressure and the airflow flowing on both sides of the opening. Exhausted. When it is not necessary to discharge the air in the helmet, the rectifying piece 6 is slid backward along the guide groove 8 to close the opening 4.

In the above-described embodiment, the ventilation device is disposed on the left and right sides of the helmet, but the ventilation device may be provided only on the top of the helmet as shown in FIG. In addition, the ventilation device according to the present invention may be provided alone as shown, but it goes without saying that it may be provided in a helmet equipped with an air introduction mechanism. Further, the rear end edge of the rectifying piece 6 may be an arc surface slightly curved forward or backward instead of the straight surface shown in the figure.

[0016]

According to the ventilating device for a helmet of the present invention, the airflow flowing in the duct is rectified by the guide duct and the rectifying piece, and the flow velocity is divided into right and left by the rectifying piece. Therefore, the air in the helmet can be efficiently sucked and exhausted by the action of the negative pressure generated on the rear side of the rectifying piece and the above-described air flow.
Further, since the rectifying piece is made freely operable from the outside as described in claim 2, it is possible to easily perform switching of opening and closing of the ventilation path, that is, switching of ventilation.

[Brief description of the drawings]

FIG. 1 is a side view showing the appearance of a helmet equipped with a ventilation device according to the present invention.

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

FIG. 3 is a sectional view taken along the line (3)-(3) of FIG. 2;

FIG. 4 is a cross-sectional view showing another shape of the rectifying piece.

FIG. 5 is a perspective view of the helmet of FIG. 1 as viewed from the rear.

FIG. 6 is a perspective view showing a form in which a ventilation device is provided on the top of a helmet.

[Explanation of symbols]

 A: Helmet body B: Ventilation device 1: Cap body 2: Buffer body 3: Ventilation path 4: Opening 5: Guidance duct 6: Rectifying piece

Claims (2)

(57) [Claims] An air passage is formed on the outer surface of the cap of the helmet body, which penetrates the cap body and the buffer, and opens into the helmet body, and the air flows on the outer surface of the cap body from the front to the rear of the cap body. A guide duct that divides the road is mounted on the ventilation path, and a rectifying piece that opens and closes the opening of the ventilation path and divides the flow path inside the duct into two parts on the inside of the guide duct so as to be slidable in the front-rear direction, A ventilation device for a helmet, wherein a rear end edge of the rectifying piece is positioned at a front side edge of the opening when the rectifying piece is located at a position where the opening of the ventilation path is opened. 2. The helmet ventilation device according to claim 1, wherein the rectifying piece is supported by a guide duct so as to be slidable from outside.