JP2688913B2 - Motorcycle windscreen device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a windscreen that is erected in front of a steering wheel in a motorcycle to protect the wind from the driver.

Conventional technology and its problems In the above windscreen, since the space behind the windscreen becomes a negative pressure area during traveling, the negative pressure is prevented from causing deformation such as bending and twisting in the windscreen. Since the wind pressure strength is secured, the size of the device tends to increase.

Further, not only the wind pressure strength of the windscreen itself but also the mounting strength of the windscreen to the vehicle body must be sufficiently secured, so that the mounting structure tends to be sturdy and complicated. Therefore, when trying to adjust the mounting height by moving the windscreen up and down, it is possible to easily adjust the windscreen, and to obtain a mounting structure that can be easily fixed to the vehicle body with sufficient mounting strength after adjustment. Was difficult.

Therefore, the present invention can easily adjust the mounting height of the windscreen and can adjust the windscreen very easily and sufficiently in order to solve the above problems. It is intended to provide a windscreen device for a motorcycle which can be fixed to a vehicle body with various mounting strengths.

Therefore, in the present invention, in a motorcycle windscreen device in which the mounting height of the windscreen is adjustable, the lower side portion of the windscreen having a ventilation opening is slid up and down on the upper edge of the vehicle body side member. A plate member fixed to the member on the vehicle body side is attached to the side of the lower side opposite to the upper edge, and an inflatable / contractible airbag is provided between the plate member and the lower side. Intervene.

According to the present invention, since the windscreen can be moved up and down and its mounting height can be adjusted, the physique of the driver (sitting height)
The optimum windshield effect can be obtained by setting the mounting height according to the above, but this windscreen is fixed to the vehicle body-side member via an inflatable / contractible airbag.

That is, when the airbag interposed between the plate member fixed with respect to the vehicle body side member and the lower side portion of the windscreen attached to the upper edge portion of the vehicle body side member is inflated, the lower side portion and the upper side of the airbag are It is fixed by being sandwiched between the edge part. Since the air bag is pressed against the lower part of the wind screen over a wide area, great mounting strength can be obtained.
Moreover, it is not necessary to reinforce the lower side portion. When the airbag is contracted, the windscreen can easily slide up and down, and thus the windscreen can be adjusted and fixed at an arbitrary height position extremely easily.

The windscreen is provided with a ventilation opening, and the air in the front is directly guided to the back of the windscreen through this opening, so that the negative pressure that tends to occur immediately after the windscreen is effectively suppressed. Therefore, the required wind pressure resistance of the windscreen is reduced,
Since the required mounting strength is also reduced, more reliable mounting of the windscreen is maintained.

If the air intake opening is provided with an air intake outlet that guides the air taken in from the front and sends it out to the back, the air on the front side of the windscreen is guided more smoothly to the back side, and the negative pressure suppression effect is improved. However, the rigidity of the windscreen is increased by further providing the air intake / exhaust port integrally with the windscreen, and combined with the decrease in the required wind pressure resistance strength due to the suppression of the negative pressure, a large reinforcing member or the like can be provided. It can be a simple lightweight windscreen that is not needed.

Examples Hereinafter, the present invention will be described with reference to illustrated examples. First
The figure is an overall side view of a motorcycle to which the present invention is applied, in which 1 is a front wheel and 2 is a rear wheel. The front upper part of the vehicle body is covered with a fairing 3 from the front to both sides, and a seat 4 is provided behind it. The driver 5 sits astride the seat 4 and operates while manipulating the steering wheel 6 by hand. In order to prevent the driver 5 from being directly hit by traveling wind, a windscreen 7 made of a transparent resin plate is connected to the vehicle body side member, that is, the upper edge of the fairing 3 and rises.

As shown in FIG. 3, the windscreen 7 has a vertically elongated long hole 8 provided at a lower side thereof fitted to a protrusion 9 provided on an upper edge piece 3a of the fairing 3, It is attached to the upper edge piece 3 so as to be vertically slidable. Then, as shown in FIG. 2, an outer plate (garnish) also serving as a decoration.
10 is provided so as to surround the lower side of the wind screen 7 from the outside. Skin 10 is fairing 3
Fixed against. In addition, as shown in FIG.
A cushion rubber 11 is inserted between the upper edge piece 3a and the windscreen 7.

An airbag 12 is mounted between the windscreen 7 and the outer plate 10 as shown in FIGS. 2 and 4. In this embodiment, one airbag 12 is provided at the center,
Three airbags are provided, one on each of the left and right sides, and these airbags 12 are communicated with each other by ventilation pipes 13, 13. An air conduit 14 is connected to one of the ventilation pipes 13, and the air conduit 14 is adapted to selectively communicate with an air source such as an air pump and the atmosphere via a control valve on a control panel (not shown). ing. Therefore, the air conduit 14
Communicate with the air source, and compressed air is sent into the airbag 12 through the air conduit 14 and the ventilation pipe 13, the airbag 12
As shown in FIG. 4 (a), it swells and presses against the windscreen 7 and the outer plate 10, and this pressurizing force presses the windscreen 7 against the upper edge piece 3a of the fairing 3 via the cushion rubber 11. Attached and fixed. When the air conduit 14 communicates with the atmosphere, the air in the airbag 12 is exhausted, so that the airbag 12 contracts as shown in FIG.
Will be able to slide up and down freely.

An air intake / outlet port 15 is provided at the lower center of the wind screen 7 as shown in FIG. As shown in FIG. 5, the air intake / outlet port 15 comprises a rectangular opening 16 provided in the windscreen 7,
A frame piece 17 is additionally provided on the front surface of the wind screen 7 along the edge of 16. On the back side of the windscreen 7, a rectangular tubular air guide 18 connected to the opening 16 is connected.
Is fixed to the frame portion piece 17 by a screw 19 penetrating the windscreen 7. Ie frame piece
The windshield 7 is sandwiched from the front and the rear by the air guide 17 and the air guide 18, and is integrally fixed to the windscreen 7, and constitutes an air intake and outlet for blowing the air taken in from the front to the back. It also functions as a reinforcing member for the windscreen 7 and contributes to improving the bending rigidity of the windscreen 7. A fixed guide vane 20 is provided at the air intake port 18a facing the opening 16 of the air guide 18, and the air rectified by the guide vane 20 is passed from the air outlet port 18b at the rear end to the rear driver 5. It is blown out toward.

In the above embodiment, the windscreen 7 is simply provided with the opening 16 to form the air intake outlet 15. However, as shown in FIG. 6, air is introduced into the windscreen 7. If the recessed portion 21 is integrally formed with the opening 16 at the back, or as shown in FIG. 7, the projection 22 is integrally formed with the windscreen 7 and the opening 16 is formed at the front end thereof. Good. In this way, the concave portion 21 or the protruding portion 22 further reinforces the wind screen 7 to respect the bending rigidity. FIG. 8 shows the same concave portions 21 on both the left and right sides of the wind screen 7 as in FIG. An example in which the opening 16 is provided is shown.

At the air outlet 18b of the air guide 18, as shown in FIG. 9, a plurality of movable guide blades 23 interlocking with each other may be provided in a row. As is well known, these movable guide vanes 23 are uniformly rotated around their respective pivots 25 by operating a knob 24 fixedly provided at the tip of one of the movable guide vanes 23 up and down to change the air blowing direction. Regulated or outlet 18b
Open and close. FIG. 10 shows the air outlet 18b of the air guide 18.
An example in which an opening / closing piece 26 for opening / closing the outlet is provided in FIG. The opening / closing piece 26 is fixed to a lever 28 swingable around a pivot 27, and by swinging the lever 28, the air outlet 18b is opened / closed by the opening / closing piece 26. FIG. 11 shows an example in which an opening / closing valve 29 is further provided between the guide blade 20 and the movable guide blade 23 in the air intake / outlet port 15 similar to FIG.

In the above-described embodiment of the present invention, if the air inside the airbag 12 is released, the windscreen 7 will be the fairing 3.
The height of the windscreen 7 can be freely slid up and down along the upper edge piece 3a and fixed at a proper sliding position by pressurizing air into the airbag 12. Can be arbitrarily and extremely easily adjusted to a height at which an optimum windshield effect can be obtained according to the physique of the driver 5. However, since the air intake / outlet port 15 is formed integrally with the wind screen 7 and moves up and down together with the wind screen 7, the height of the air intake / outlet port 15 is adjusted at the same time according to the adjustment of the height of the wind screen 7, and The air blown rearward from the intake outlet 15 is always correctly directed to the upper body of the driver 5 regardless of the difference in the physique of the driver 5, as indicated by the arrow in FIG. In FIG. 2, the solid line 7a indicates the upper edge of the wind screen 7 when the mounting height of the wind screen 7 is increased.
The upper edge when lowered is shown by a chain line 7b, and the position of the air intake outlet 15 corresponding to each is shown by a solid line 15a and a chain line 15b.

The air that has passed through the air intake / outlet port 15 is blown out from a position close to the back surface of the windscreen 7, so that the negative pressure that tends to occur immediately after the windscreen 7 is effectively suppressed, and the windscreen 7 is resistant to wind pressure. Of the windscreen 7 can be prevented, and this air blows straight from the air intake portion on the front of the windscreen 7 to the air outlet portion on the rear surface, and the distance from the intake portion to the outlet portion is short, so that the passage resistance is reduced. Small and efficient ventilation.

As described above, according to the present invention, when the airbag is inflated, the airbag comes into pressure contact with the lower portion of the windscreen over a wide area. Therefore, the windscreen is fixed to the vehicle body with a large mounting strength, and There is no need to reinforce the part. On the other hand, if the air bag is contracted, the wind screen can easily slide up and down, so that the wind screen can be extremely easily adjusted to an arbitrary height position and securely fixed.

Also, the air on the front of the windscreen is guided directly behind the windscreen through the ventilation openings.
The negative pressure that tends to occur immediately after the windscreen is effectively suppressed, which reduces the mounting strength required for fixing the windscreen to the vehicle body, and ensures more reliable mounting of the windscreen.

[Brief description of the drawings]

FIG. 1 is an overall side view of a motorcycle to which the present invention is applied, FIG. 2 is a front view of an upper portion of the motorcycle, and FIG. 3 is a perspective view showing a fairing and a windscreen without an outer plate, 4 is a sectional view taken along the line IV-IV in FIG. 2, FIG. 5 is an exploded perspective view of the air intake / outlet portion, and FIGS. 6 to 8 are perspective views showing modified examples of the air intake / outlet portion. FIGS. 9 and 11 are vertical sectional views showing modified examples of the air guide. 1 …… front wheel, 2 …… rear wheel, 3 …… fairing, 4 ……
Seat, 5 ... Driver, 6 ... Steering wheel, 7 ... Windscreen, 8 ... Long hole, 9 ... Projector, 10 ... Skin,
11 …… Cushion rubber, 12 …… Airbag, 13 …… Ventilation pipe, 14 …… Air conduit, 15 …… Air intake outlet, 16
…… Aperture, 17 …… Frame part, 18 …… Air guide, 19 …… Screw, 20 …… Guide blade, 21 …… Recessed part, 22 …… Projected part, 23
...... Movable guide vane, 24 ...... Knob, 25 …… Axis, 26 ……
Opening / closing piece, 27 …… Axis, 28 …… Lever, 29 …… Opening / closing valve.

Claims (2)

(57) [Claims] 1. A windscreen device for a motorcycle, wherein the mounting height of the windscreen is adjustable.
The lower side of the wind screen having a ventilation opening is slidably attached to the upper edge of the vehicle body side member,
A plate member fixed with respect to the vehicle-body-side member is added to a side of the lower side opposite to the upper edge, and an inflatable / contractible airbag is interposed between the plate member and the lower side. A windscreen device for motorcycles. 2. The windscreen device according to claim 1, wherein an air intake outlet for guiding the air taken in from the front and sending it out to the back is integrally provided with the windscreen in the ventilation opening.