JP2718912B2 - 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 helmet used when riding a motorcycle or an automobile, and more particularly, to a helmet that incorporates a traveling wind into the helmet to ventilate the helmet.

[0002]

2. Description of the Related Art Conventionally, a helmet worn on a head when riding a motorcycle includes one or a plurality of helmets near a forehead portion of the helmet in order to prevent the inside of the helmet from getting damp especially in summertime. Some have opened pores. This ventilator is for ventilating the inside of the helmet by taking the outside air into the helmet by flowing the above-mentioned ventilation hole to the traveling wind during traveling, flowing the inside of the helmet and discharging the outside of the helmet.

[0003]

By the way, in the ventilating apparatus described above, a ventilation hole is opened near the forehead of the helmet through the cap body and the shock absorbing liner, and the helmet is put on the head and the motorcycle is mounted. By taking a forward leaning posture, the air hole faces the traveling wind, and outside air flows into the helmet from the air hole. However, the outside air seems to efficiently flow into the helmet because the ventilation holes face the traveling wind due to the forward leaning posture, but the amount of air actually flowing into the helmet is small, and the ventilation holes are opened. It is the fact that the traveling wind hitting the vicinity of the forehead passes directly over the opening of the ventilation hole and flows behind the helmet.

[0004] Of course, it is possible to increase the amount of air flowing into the vent hole by increasing the diameter of the vent hole. The pore diameter is naturally limited.

Accordingly, 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 efficiently discharge outside air into a helmet despite having a limited-diameter through-hole. To provide a helmet that can be incorporated into the helmet.

[0006]

The technical means taken by the present invention to achieve the above object is to provide a helmet with a through hole passing through the cap body and the shock absorbing liner on the outer surface,
On the other hand, a suction hole communicating with the through hole, a projection narrower than the diameter of the suction hole at a position forward of the suction hole on a center line passing through the center of the suction hole, and further connecting the projection and the suction hole. On the line, a duct having a wall higher than the protrusion is formed at a position behind the suction hole so as to stand up, and the duct is formed with a protrusion.
It is characterized in that it is attached to the through hole so that the center line passing through the wall is oriented in the running direction.

The above duct may be directly attached to the outer surface of the helmet with an adhesive, but the attachment strength of the adhesive is set to an adhesive strength that easily separates from the helmet when an external force is applied. Further, the duct is not limited to the form directly attached to the helmet, and may be attached with another object interposed therebetween, in which case the duct may be fixed at a predetermined position, but may be slidably attached to the other object. I can do it. As the mounting structure, the mounting base is bonded and fixed to the through hole on the outer surface of the helmet, the duct protrudes against the mounting base, and the center line passing through the wall is slidable in the front and rear direction so as to face the running direction So that the through hole is opened and closed by the slide of the duct. Further, the duct may be provided with a cover for covering above the suction hole. In this case, the cover may be provided so as to protrude from the upper end of the wall in the same manner, or may be provided separately from the cover.

According to the above configuration, air (running wind) flows rearward while avoiding the projection disposed in front of the suction hole.
At this time, a negative pressure is generated behind the protrusion, and the air is drawn to the air and tends to collect on the center line behind the protrusion. Then, a wall stands upright behind the suction hole, and collides with the wall just above the suction hole, so that the density of air increases. Part of the air having a high density climbs over the wall, but the air that has lost its escape space is turned by the wall in the direction of the suction hole and efficiently flows into the suction hole (through hole). And, when the above-mentioned duct is attached to the attachment base attached to the helmet so as to be able to slide back and forth, the duct can be opened and closed by sliding the duct back and forth, so that outside air can be introduced into the helmet. If there is no need to allow the inflow, the passage can be closed by sliding the duct.

The inflow of the air varies depending on the vertical angle of the duct (intake hole) facing the traveling wind.
The amount of air flowing in depends. Therefore, if the cover is protruded forward from the wall behind the suction hole so as to cover the suction hole, the air escaping beyond the wall is trapped, so that the angle of the duct (the inclination of the helmet depending on the riding posture) ) Does not easily occur, and the efficiency of air inflow can be further increased.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a helmet in which the device according to the present invention is arranged on the outer surface of a full-face type helmet in combination with an air discharging mechanism.
1 is a full face type helmet, 2 is a duct for allowing air to flow into the helmet, and 3 is a discharge mechanism for discharging air in the helmet to the outside of the helmet. The above-mentioned helmet 1 is formed of a cap body 1a having a well-known shape formed of a fiber-reinforced resin material so that the head can be easily inserted therein, and a polystyrene foam or the like fitted and fixed inside the cap body 1a. Shock absorbing liner 1b and an interior body 1c such as a ceiling pad, a cheek pad, an ear pad and the like constituted by a sponge cushion or the like provided inside the shock absorbing liner 1b.
It is composed of

A window hole 4 is opened in the front of the cap 1a constituting the helmet 1, and the window hole 4 is closed by a shield 5 which is attached to the outside of the cap 1a in a vertically rotatable manner.
Or it is open. Then, the cap 1a and the shock absorbing liner 1b penetrate through the cap 1a and the shock absorbing liner 1b at an intermediate position between the upper hole edge and the top of the window hole 4 of the cap 1a in the helmet 1 at a position equidistant from the center in the width direction. A through hole 6 is formed to communicate the inside and outside of the helmet, and a mounting base 7 is fixed to the outer surface of the cap 1a of the through hole 6 with an adhesive, and the duct 2 is slidable in the front and rear direction on the mounting base 7. Installed.

As shown in FIG. 3, a mounting base 7 mounted on the outer surface of the cap 1a is a thin plate 701 made of synthetic resin.
A cylindrical body 702 that fits into the through hole 6 protrudes from the center of one surface (the lower side in the drawing) of the surface of the cylindrical body, and the inside of the cylindrical body 702 is opened.
Further, on the surface (upper side in the drawing) opposite to the surface on which the cylindrical body 702 is protruded, a duct 2 to be described later is slidably engaged and supported on both sides in the width direction across the opening of the cylindrical body. Piece 7
03 is protruded, and a stopper piece 704 for restricting the sliding amount of the duct 2 is extended and protruded from the rear side of the opening of the cylindrical body. Such a mounting base 7 is inserted into the through hole 6 of the cap body 1a. 702 are fitted and fixed with an adhesive. The width (dimension in the front-rear direction) of the flat portion of the mounting base 7 in front of the opening of the cylindrical body 702 is such that when the duct 2 described later is slid forward by a predetermined amount, the suction hole 201 of the duct 2 is closed. And only the size.

The duct 2 attached to the mounting base 7 has a suction hole 201 communicating with the through hole 6 (the cylindrical body 702) made of a synthetic resin material having flexibility, and a suction hole 2
A protrusion 202 having a width smaller than the diameter of the suction hole 201 at a position forward of the suction hole 201 on a center line passing through the center of 01, and a suction hole 201 on a line connecting the protrusion 202 and the suction hole 201.
A wall 203, which is higher than the projection 202, is integrally provided at a more rearward position, and the duct 2 is formed in a streamlined shape toward the rear in order to reduce air resistance as much as possible. . Further, as shown in FIG. 4, the duct 2 has, on its inner side, engaging projections 204 which engage with the engaging pieces 703 of the mounting base 7 and are formed parallel to both sides in the width direction with the suction hole 201 interposed therebetween. And a mounting base 7 on the front edge of the duct 2.
There is an engaging step 205 which abuts on the front end of the duct 2 to regulate the slide backward and align the suction hole 201 of the duct 2 with the through hole 6 (the cylindrical body 702). Engagement steps 206 are provided, which respectively abut against stopper pieces 704 provided on the rear side to restrict forward sliding and close the suction holes 201 of the duct 2.

As shown in FIG. 7, the engaging projections 204 formed on the duct 2 are engaged with the engaging pieces 703 formed on the mounting base 7 by being pressed from above. The engagement piece 703 is formed to slide in the longitudinal direction while maintaining the engagement state, and the degree of engagement is such that the duct 2 is easily separated when an external force acts on the duct 2. Further, a moderation spring piece 705 is attached to the mounting base 7 between the mounting base 7 and the duct 2 so that the duct 2 can slide in the front-rear direction with good control.
On the other hand, two convex portions 207 are provided on the other side of the duct 2 along the sliding direction at predetermined intervals, and when the duct 2 is slid in the front-rear direction, the convex portion 207 is located at a position before the end of the slide. 207 passes over the ridge at the rear end of the moderating spring piece 705, and the sliding operation is performed with good moderation.

The amount of air flowing into the suction hole 201 of the duct 2 varies depending on the vertical angle with respect to the traveling wind.
That is, in the present invention, it is possible to set the angle characteristic of the inflow efficiently by the balance between the protrusion 202 and the wall 203. However, when the opening surface of the suction hole 201 is generally parallel to the traveling wind, the wall 203 is When the riding posture is inclined forward and the opening surface of the suction hole 201 faces the traveling wind, the amount of air flowing over the wall 203 decreases, and the amount of air flowing in the rear of the duct 2 decreases. There is a tendency that the amount of air flowing into the intake hole 201 tends to increase, and the amount of air flowing in depends on the angle of the suction hole 201 facing forward (angle of forward inclination). Therefore, as shown in FIGS. 10 and 11, the duct 2 is used to catch air that escapes backwards beyond the wall 203 described above.
By extending the cover 208 forward so as to cover the opening surface of the suction hole 201 from the wall 203, it is possible to make it difficult for a difference due to the forward inclination angle of the riding posture to occur, and to further increase the efficiency of air inflow. . The protrusion 2 in FIG.
02 ′ extends from the upper surface of the front end of the duct 2 toward the front end of the cover 208, and divides the traveling wind into two parts to the left and right to form the projection 202 ′.
, A negative pressure is generated at the rear side, and the inflow of air as described above is efficiently performed.

The discharging mechanism 3 shown in FIGS. 1 and 2
A ventilation hole 301 penetrating the helmet 1 in and out is opened, and a tunnel-shaped ventilation cover 302 is attached so as to cover the opening of the outer surface of the helmet in the ventilation hole 301, and is introduced into the cover from the front opening of the ventilation cover 302. The air thus accelerated flows along the outer surface of the helmet 1 and flows out from the rear opening of the ventilation cover 302. As a result, during traveling, the air introduced from the front opening of the ventilation cover 302 passes through the inside of the cover, so that the inside of the cover becomes a negative pressure due to the flow velocity, and the negative pressure causes hot air trapped in the upper part of the helmet to vent. It is sucked out of the helmet from 301. Along with this, fresh outside air flows into the helmet 1 from the duct 2 described above, and effective ventilation is performed. It should be noted that the discharge mechanism is shown as an embodiment, and it goes without saying that it is possible to use only the air inflow mechanism according to the present invention, as well as a combination with another discharge mechanism.

[0017]

According to the first aspect of the present invention, air (running wind) flows backward avoiding the projection disposed in front of the suction hole, and at this time, a negative pressure is generated behind the projection, so that air is generated. Is attracted to it and tends to gather on the center line behind the protrusion. And a wall stands upright behind the suction hole,
The air collides with the wall just above the suction hole, increasing the density of air. Part of the air having a high density climbs over the wall, but the air that has lost its escape space is turned by the wall in the direction of the suction hole and efficiently flows into the suction hole (through hole). Therefore, air can efficiently flow into the helmet.
Further, in the case of the configuration of claim 2, the through hole can be opened and closed by sliding the duct in the front-rear direction. Therefore, when it is not necessary to allow the outside air to flow into the helmet, the through hole is opened by sliding the duct. Can be closed.
And since the duct is attached so that it can be easily separated from the attachment base when it receives an external force, there is no danger that a serious accident may be caused by that.

According to the third aspect of the present invention, since the air escaping beyond the wall is trapped, there is little difference in the amount of air flowing in due to the angle of the duct (the inclination of the helmet depending on the riding posture). The efficiency of the inflow can be increased.

[Brief description of the drawings]

FIG. 1 is an external view of a helmet showing an example of an embodiment of the present invention.

FIG. 2 is a longitudinal sectional side view taken along line (A)-(A) of FIG.

FIG. 3 is an exploded perspective view showing an air inflow mechanism of the present invention.

FIG. 4 is a perspective view showing an inner surface structure of the duct.

FIG. 5 is an enlarged sectional view of an inflow mechanism portion.

FIG. 6 is a partial plan view of FIG. 5;

FIG. 7 is a sectional view taken along the line (B)-(B) of FIG.

FIG. 8 is a sectional view taken along lines (C)-(C) of FIG.

FIG. 9 is a cross-sectional view of a state in which a duct is slid forward from the state of FIG. 5 to close an intake hole.

FIG. 10 is a cross-sectional view illustrating a modified example in which a cover is provided on a duct.

FIG. 11 is a perspective view showing another modification in which a cover is provided on a duct.

FIG. 12 is a sectional view taken along lines (D)-(D) of FIG. 11;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Helmet 2 ... Duct 6 ... Through hole 7 ... Mounting base 201 ... Suction hole 202 ... Projection 203 ... Wall 208 ... Cover

Claims (3)

(57) [Claims] 1. A through hole is formed in an outer surface of a helmet to penetrate a cap body and an impact absorbing liner. On the other hand, a suction hole communicating with the through hole and a center line passing through the center of the suction hole. A protrusion having a width narrower than the diameter of the suction hole at a more forward position, and a duct having a wall higher than the protrusion standing and protruding at a position rearward from the suction hole on a line connecting the protrusion and the suction hole is further formed. A helmet wherein a duct is attached to the through-hole such that a center line passing through a wall of the duct is oriented in a running direction. 2. A mounting base is adhesively fixed to a through-hole portion on an outer surface of the helmet, and the duct is protruded from the mounting base, and a center line passing through a wall is directed in a running direction so as to be slidable in the front-rear direction. 2. A helmet according to claim 1, wherein the through hole is opened and closed by sliding the duct when the helmet is mounted. 3. The helmet according to claim 1, wherein the duct has a cover that covers an upper portion of the suction hole.