JPS61258004A - Back surface rectifier apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for reducing air resistance during high-speed operation of a motorcycle.

(Prior Art) It is generally known that air resistance is proportional to the square of speed. Particularly when running at high speeds such as in races, the proportion of air resistance in running resistance increases rapidly. .

Therefore, in conventional motorcycle racers, which focus on high-speed performance, it is common to use fairings to reduce air resistance, and the rider also takes a prone position when riding. The fairing and the rider's prone position were integrated to reduce air resistance.

(Problem to be solved by the invention) However, the rider needs to look ahead even when riding in a prone position, and therefore the helmet
A concave space is created between the helmet and the back of the helmet, and due to the viscosity of the air and the concave space, the airflow separates from above the rear of the helmet, creating a vortex that cannot be ignored when driving at high speeds. becomes the air resistance.

(Means for Solving the Problems) In order to solve the above technical problems, the present invention
and a fin having a crescent-shaped cross section with a substantially triangular shape in plan view (5b), and a fixing member (6) for fixing the fin to the rider's back.

(Function) By fixing the fins to the back of the rider, the space between the rear of the helmet and the back is filled and the flow of air is smoothed.

(Example) Examples will be described below based on the accompanying drawings.

FIG. 1 is a side view showing a rider wearing a rear rectification device according to the present invention riding on a motorcycle. A rear rectifying device (7) is attached to the back of a rider (4) riding a two-wheeled vehicle (1).

Next, this back rectifier (7) will be explained based on FIGS. 2 to 6. Here, Fig. 2 is a plan view of the entire rectifying device (7), Fig. 3 is a side view of the same, Fig. 4 is a side view of the fin, Fig. 5 is a plan view of the fin, and Fig. 6 is a plan view of the same fin. It is a sectional view taken along the line A-A of FIG.

The back rectifier (7) has a core (
5) and a fixing member (8) for attaching it to the rider, the core body (5) is made of a foamed resin molded product such as foamed urethane, the upper surface (51) is an outwardly convex curved surface, and the lower surface (52)
) is formed as an inwardly convex curved surface, and the front surface (53) is formed as an inwardly convex curved surface.

That is, as shown in FIG. 4, the side view (5a) of the core body (5) is a substantially triangular shape consisting of a right side (51a), a left side (53a), and a base (52a), and in the embodiment, the right side (
51a) and the base (52a) are both upwardly convex curves,
The curve on the right side (51a) is streamlined so as to be continuous with the fairing and the helmet, and the curve on the bottom side is shaped to fit the rider's back when in a prone position, so the right side (51a) and the bottom side (52a) form an acute angle. None, left side (5
3a) It has a dogleg shape.

In addition, the top side (51b) of the core (5) in plan view (5b)
, the lower side (52b), and the left side (53b).The upper side (51b) and the lower side (52b) are both outwardly convex curves, and are arranged along the upper outer surface of the fairing and helmet. The airflow is directed to the upper surface (5) of the core (5).
By flowing along 1), air resistance is reduced. Further, the left side (53b) is an inwardly concave curve, and the front surface (53) including the left side (53b) is a curved surface that follows the shape of the helmet (3). Further, by making the cross-sectional shape substantially crescent-shaped as shown in FIG. 6, which is a cross-sectional view taken along the line A--A in FIG. 4, air resistance against crosswinds and the like is reduced.

Further, the substantially triangular corner (R) in plan view (5b) and side view (5a), ... and crescent-shaped cross section (5C
) The outer peripheral surfaces of the core body (5) such as the ends (S) and (S) are all rounded and smooth.
The aim is to further reduce air resistance. Also, since it is molded from urethane foam, it is lightweight and flexible, so it does not put a burden on the rider when worn and reduces fatigue.

On the other hand, in this embodiment, the fixing member (8) is a foamed leather (B1) that wraps around the core body (5), and belts (82), (E13), (84) sewn to the foamed leather (81).
), and the left and right front ends (5
2L), a pair of shoulder bells (82) that pass from (52R) to the rear end of the lower surface (52B).

By sewing in (83), shoulder belt (82), (
83) and the foamed leather (B1), and furthermore, by inserting a lightweight hard material such as belt-width plastic as a core material between the shoulder belt and the foamed leather and sewing it together with the shoulder belt. Increases strength. In addition, the rear end (52B) of the core body (5) is attached at right angles to the length direction of the core body.
4) is fixed. Also, the free end of the belt (E12a
), (82b), (83a), (113b
), (84a), and (84b) are attached with Velcro to attach the rear rectifier to the rider.
It can be removed quickly and easily, and it can also be easily adjusted depending on the individual differences in the rider's physique. Foaming again? -(et
), the lower surface (lla) and the back surface of the joint corresponding to the lower surface (81a) are also covered with Velcro tape, which makes the fixation even stronger during installation and stable against wind pressure during high-speed operation.

The above-mentioned rear rectifier is carried with the front side facing the helmet, with both arms passed through the left and right type belts, and carried on the back like a rucksack.
Adjust with the waist belt and secure with the Velcro on the back.

For example, a Velcro tape consists of a surface having a large number of protrusions with bent tips on a plane, and a surface having a large number of ring-shaped locking parts that can be latched to the tips of the protrusions.

Next, as another example, as shown in FIGS. 7 and 8, a bag (5
0), and the core body (5) is stored in the bag.

It may be fixed with a zipper or the like.

(Effects of the Invention) As described above, according to the rectifying device of the present invention, it is possible to fill the gap that occurs between the rear of the helmet and the back when riding a racing motorcycle in a prone position, thereby reducing the risk of damage to the human body. It has a smooth shape that rectifies the air, greatly reducing air resistance when riding, and it does not put a burden on the rider wearing it.

[Brief explanation of the drawing]

Fig. 1 is a side view of a racing motorcycle when a rider is riding, Fig. 2 is a plan view of the rear rectifier of this embodiment, Fig. 3 is a side view of the rectifier, and Fig. 4 is a side view of the core. Fig. 5 is a plan view of the concentric body, Fig. 6 is a sectional view taken along the line A-A in Fig. 4,
FIG. 7 is a side view of another embodiment, and FIG. 8 is a front view of another embodiment. 5... Core body, 5a... Side view of core body,
5b... Planar view of the core, 6... Fixing member patent Applicant: Honda Motor Co., Ltd. Agent, Patent Attorney, Part 2 1) Part of the patent attorney, Kuni Ohashi, Part of the Department patent attorney
Udo Koyama Patent Attorney No 1)
Shigeru Figure 4 Figure 5 et al.

Claims (2)

[Claims] (1) A back flow rectifier consisting of a fin that is substantially triangular and has a crescent-shaped cross section in side view and plan view, and a fixing member for fixing the fin to the rider's back. (2) The back rectifier according to claim 1, wherein the fins include a core body made of a foamed resin molded product such as foamed urethane.