JPH0659860B2 - Motorcycle seats for trial - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a seat for a so-called trial motorcycle that travels in a rocky place or a wasteland, and can reduce the seat manufacturing cost and stand up. It is possible to improve the maneuverability and the stability of the posture during the trial driving in the state of being.

[Conventional technology]

A motorcycle for trial use stands on a step with the hips floating, the seats sandwiched between the knees, the body leans back and forth with respect to the vehicle body, and the weight is quickly moved back and forth and left and right while balancing. , Whose main purpose is to drive. The seats of conventional trial motorcycles are designed and manufactured based on the same design concept as the seats of ordinary motorcycles, that is, a design concept that emphasizes cushioning properties, maneuverability at high speeds, and stability. However, at present, it is not based on the design concept suitable for the driving posture and driving state of the trial motorcycle.

Unlike ordinary motorcycles, trial motorcycles do not mainly aim to drive on flat ground at high speed while sitting on the seat, so the seat cushion is large and long. It is not necessary, but rather, the cushion part should be as narrow and short as possible without hindering running on level ground, and making it short is suitable for its operating condition and posture, and it reduces seat manufacturing costs and seat mounting. , It is also desirable for easy and easy removal work.

However, if the seat length is shortened and narrowed, when the body is tilted back and forth with respect to the vehicle body while standing up and the weight is quickly moved back and forth, and left and right, the seat exceeds the longitudinal range of the seat and the Since the body is moved forward and backward, the movement of moving the body forward and backward is not smooth, and the driving posture at that time becomes unstable.

[Problems to be Solved by the Invention]

The present invention aims to address the above-mentioned problems, and after making the seat as small as possible, the rear part of the fuel tank and the front part of the rear fender are practically used as a part of the seat in a standing state without any discomfort. It is an object to devise the shape and structure of the sheet so that the sheet can be produced and is made as simple as possible without impairing its durability, and the production cost can be reduced.

[Means taken to solve the problem]

Means taken for solving the above-mentioned problems are constituted by the following elements (a) to (d). (B) A long recess is formed in the front-rear direction in the center upper surface of a plastic bottom plate having an inverted U-shaped cross section, and the front and rear of this recess are defined as a front rising slope and a rear rising slope, and an elastic seat is formed in the recess. Parts,
The upper surface of the elastic seat and the upper surface of the bottom plate are flush with each other, and (b) the front upper surface and the front side surface of the bottom plate are the rear upper surface of the fuel tank and the rear side surface is flush with the continuous surface. thing,
(C) The rear upper surface and the rear side surface of the bottom plate are the front upper surface of the rear fender and the continuous surface flush with the front side surface, and (d) the outer peripheral portion of the portion of the bottom plate facing the elastic seat portion. A projection-shaped wall plate and a groove along the wall plate are provided on the bottom surface, and a large number of water drain holes vertically penetrating the bottom surface of the groove.

[Action]

The width and length of the elastic seat of the seat are limited to the widths and lengths necessary for sitting down and traveling on level ground, and the length and width of the bottom plate are sufficient to mount the elastic seat. It is as small as possible. Therefore, when standing up, the seat is sandwiched between both knees while standing, and the body is swung back and forth while sliding the knees along the side plates of the inverted U-shaped bottom plate to quickly move the weight. It is possible to stabilize the body in a state where the body is greatly tilted with respect to the vehicle body.

Since the front upper surface and front side surface of the bottom plate are flush with the rear upper surface and rear side surface of the fuel tank, the knees should slide smoothly toward the rear of the fuel tank when leaning forward. Therefore, it is possible to grip the rear part of the fuel tank with both knees, as if the front part of the conventional long seat is sandwiched with both knees. Also, since the rear upper surface and the rear side surface of the bottom plate are flush with the front upper surface and the front side surface of the rear fender, when the body is tilted backward, slide the knee smoothly to the front of the rear fender. It is possible to grip the front part of the rear fender with both knees without feeling discomfort, as in the conventional case where the rear part of a long rear seat is sandwiched with both knees. That is, the rear part of the fuel tank and the front part of the rear fender can be used substantially as a part of the seat, and the upper and side surfaces of the seat bottom plate,
Since the rear upper surface and rear side surface of the fuel tank and the front upper surface and front side surface of the rear fender are flush with each other and have no step, both knees are moved to the rear portion of the fuel tank and the front portion of the rear fender. Can be done smoothly.

Since a dish-shaped recess is formed on the upper surface of a plastic bottom plate having an inverted U-shaped cross section, and an elastic seat portion of the same shape is fitted and fixed in this recess, the shape, structure, and elasticity of the bottom plate are determined. The shape and structure of the seat is extremely simple, and its manufacture and assembly are simple and easy. Therefore, the manufacturing cost of the sheet can be significantly reduced.

Also, if rainwater enters the mating surface of the bottom plate and the elastic seat from its surroundings, the elastic seat will be moistened from below, and the adhesion of the joint surface will be peeled off, impairing its lightness and durability. Of the portion where the bottom plate faces the elastic seat portion, a projecting wall plate and a groove along the wall plate are provided on the outer peripheral portion thereof, and a large number of water drain holes that penetrate vertically are provided on the bottom surface of the groove. By doing so, the invading rainwater is blocked by the wall plate,
The dammed rainwater is discharged under the bottom plate from the drain hole, so that rainwater penetrates deeply between the elastic seat portion and the bottom surface of the recess of the bottom plate to wet the elastic seat portion from below, Further, it is possible to prevent the joining of the joining surface between the bottom surface of the recess and the elastic seat portion of the bottom plate from being impaired.

Furthermore, by moving the body back and forth and left and right as described above in the riding state, even if the front and rear and right and left forces are applied to the elastic seat portion, since the projecting wall plate is provided on the outer peripheral portion of the bottom plate, It is possible to prevent the elastic seat portion mounted in the recess of the bottom plate from being displaced with respect to the bottom plate.

〔Example〕

Next, an embodiment of the present invention will be described with reference to the drawings.

There is a fuel tank 4 above the engine 3, and the fuel tank 4
There is a seat 5 behind.

The bottom plate 6 of the seat 5 is a plastic molded product such as polypropylene having a reverse U-shaped cross section, and has a dish-shaped recess in the central upper surface. The overall length and width are made as small as possible within the limit that there is no hindrance when traveling on a flat ground. The front part of the bottom plate 6 overlaps with a part of the rear part of the fuel tank 4, and also overlaps with a part of the front part of the rear fender 22 at the rear part. Left and right side hem portions of the bottom plate 6 are formed as side portions 7 which are bent downward.

An elastic seat 11 made of an elastic member such as polyurethane containing closed cells is fitted and fixed in the recess of the bottom plate, and the upper surface thereof and the front and rear upper surfaces of the bottom plate form a continuous surface flush with each other. There is.

A V-shaped upper edge portion 23 is formed on the outer surface side of the portion where the outer surface and the inner surface of the elastic seat portion intersect. The front and rear portions of the bottom plate are inclined obliquely upward so as to be flush with the upper edge portion 23 of the outer periphery of the elastic seat portion 11, and the lower ends of both sides of the elastic seat portion 11 and both sides of the bottom plate are inclined. It is a continuous surface flush with the upper end.

The front upper surface of the bottom plate 6 and the rear upper surface of the fuel tank 4 are flush and continuous with each other. Similarly, the rear upper surface of the bottom plate 6 and the rear fender 2
The upper surface of the front part of 2 is a flush continuous surface. Similarly, the front and rear surfaces of both side portions 7 of the bottom plate 6 are flush with the rear side surface of the fuel tank and the front side surface of the rear fender 22.

A steel plate 8 for mounting and reinforcing is embedded in the elastic seat portion 12,
The nut 9 welded to the lower surface of the steel plate 8 is attached to the mounting bolt 10
The elastic seat portion 11 is fixed to the bottom of the recess of the bottom plate 6 by screwing. In practice, it is desirable that the elastic seat portion be adhered to the inner surface of the recess of the bottom plate 6 with an adhesive in order to strengthen the fixing to the bottom plate.

Further, in a portion of the bottom plate 6 facing the elastic seat portion 11, a projecting wall plate 12 and a groove 13 along the wall plate 12 are provided on an outer peripheral portion thereof, and a bottom surface of the groove 13 is provided. Is provided with a large number of water drain holes 14 penetrating vertically. Rainwater that has entered between the bottom surface of the recessed portion of the bottom plate and the elastic seat portion 11 is dammed by the wall plate 12, and the dammed rainwater is discharged from the drain hole 14 to the bottom of the bottom plate 6. This prevents rainwater from penetrating deeply between the elastic seat portion and the bottom surface of the recess of the bottom plate to wet the elastic seat portion from below.

At the center of the front part of the bottom plate 6, there is provided an insertion port 15 that opens to the front side, and at both sides 7 there are provided protrusions 16,
The seat 5 is detachably attached to the vehicle body frame by using the insertion port 15 and the protrusion 16. That is, the seat 5 is pushed forward and the frame 1 is inserted into the insertion port 15.
The end of the bracket 18 protruding from 7 is inserted, then the side part 7 is expanded to both outer sides against its elasticity, the seat is returned to the rear, and the inner protrusion 16 is fixed to the grommet 20 fixed to the frame 19. Insert and fix the seat to the frame. In this state, the air cleaner 21 is covered by the both side portions 7, 7 of the bottom plate 6.

When the both sides 7, 7 of the bottom plate 6 are opened outwardly against the resilience, the protrusion 16 comes off the grommet 20, so that the seat 5 is pulled backward and the insertion port 15 is removed from the bracket 18 so that the seat 5 is framed. Removed from. Since the seat can be easily and easily attached and detached, the maintenance of the air cleaner 21 is facilitated.

In this example, the elastic seat portion 11 manufactured in advance is attached to the bottom plate 6, but the elastic seat portion may be attached to the bottom plate at the same time when the elastic seat portion 11 is formed of the foamed resin.

In that case, an integrally molded product of the bottom plate 6 and its front, rear, and side portions 7 together with the middle mold 62 is incorporated into the molding space formed by the upper mold 60 and the lower mold 61, and the molding space is introduced from the injection pipe 63 into the molding space. A method of injecting a resin into the resin may be adopted.

In the above trial motorcycle, the bottom plate 6 of the seat 5 is used.
And its front portion, rear portion, and side portion 7 are integrally molded, and the front portion and the rear portion of the bottom plate 6 are inclined and extended upward so as to be flush with the upper edge portion 23 of the outer periphery of the elastic seat portion 11. Also, both sides of the bottom plate are inclined outwardly so that they are flush with both sides of the elastic seat, and the top and side surfaces of the front part of the bottom plate are flush with those of the rear part of the fuel tank. In addition, since the top and side surfaces of the rear part of the bottom plate are flush with the front part of the rear fender, the seat stands with the knees sandwiched between the body and the body in front of and behind the vehicle. When inclining, the knee moves smoothly from the seat to the rear part of the fuel tank or the front part of the rear fender without any discomfort. Reference numeral 1 is a front wheel and 2 is a rear wheel.

〔The invention's effect〕

The invention which solves the above-mentioned problems of the present invention is not yet known.
Therefore, it is an effect peculiar to the present invention that this new problem is solved and the above-mentioned problems of the prior art are completely solved.

That is, the width and length of the seat are limited to the limits necessary for sitting on the seat and traveling on flat ground, the manufacturing cost of the seat is reduced, and its attachment and detachment can be easily and easily performed. Since the front upper surface and the front side surface of the bottom plate are flush with the rear upper surface and the rear side surface of the fuel tank, it is possible to smoothly slide the knee to the rear portion of the fuel tank when leaning forward. As a result, the rear part of the fuel tank can be gripped with both knees, as if the seat were clamped with both knees. Also, since the rear upper surface and the rear side surface of the bottom plate are flush with the front upper surface and the front side surface of the rear fender, when the body is tilted backward, slide the knee smoothly to the front portion of the rear fender. This allows the front part of the rear fender to be gripped with both knees, as if the seat were clamped with both knees. Therefore, the rear part of the fuel tank and the front part of the rear fender can be utilized substantially as a part of the seat, and the upper surface of the seat bottom plate, the side surface of the seat bottom plate, the rear upper surface of the fuel tank, the rear side surface, and the rear fender. Since the front upper surface and the front side surface are flush and continuous without steps, both knees can be smoothly moved to the rear of the fuel tank and the front of the rear fender. Therefore, since the rear part of the fuel tank and the front part of the rear fender can be used as a part of the seat during the trial competition, there is no inconvenience in practical use even if the seat length is shortened as described above.

Further, of the bottom surface of the recess where the bottom plate faces the elastic seat portion, a projecting wall plate and a groove along the wall plate are provided on the outer peripheral portion thereof, and the bottom surface of the groove has a vertical shape. There are a large number of water drainage holes penetrating through. Therefore, rainwater penetrates deep into the mating surface between the bottom surface of the recess of the bottom plate and the elastic seat portion to wet the elastic seat portion from below, and the joining surface between the bottom surface of the recess portion of the bottom plate and the elastic seat portion is joined. Can be prevented from being damaged.

Furthermore, by moving the body back and forth and left and right as described above in the riding state, even if the front and rear and right and left forces are applied to the elastic seat portion, since the projecting wall plate is provided on the outer peripheral portion of the bottom plate, Since it is possible to prevent the elastic seat portion mounted in the recess of the bottom plate from shifting with respect to the bottom plate, lightness and durability are not impaired.

[Brief description of drawings]

FIG. 1 is a side view of a trial motorcycle equipped with the seat of the present invention, FIG. 2 is a vertical cross-sectional view of the seat, and FIG. 3 is a plan view of a half of a bottom plate from which the elastic seat portion of the seat is removed.
FIG. 4 is a side view of the main part of the seat with the seat attached to the vehicle body,
FIG. 5 is a cross-sectional view taken along line VV of FIG. 4, and FIG. 6 is a schematic view showing another example of the method of forming the elastic seat portion of the seat. 4 ... Fuel tank, 5 ... Seat, 6 ... Bottom plate, 7 ... Side part, 11 ... Elastic seat part, 12 ... Wall plate, 13 ... Groove, 14 ... Drainage hole, 21 ... Air Purifier, 22 ... Rear fender 23 ... Upper edge of outer periphery of elastic seat.

Claims (1)

[Claims] Claims: 1. A plastic bottom plate having a reverse U-shaped cross section is formed with a long recess in the front-rear direction on the central upper surface thereof, and the front and rear of the recess are defined as a front rising slope and a rear rising slope, and the recess is formed in the recess. The elastic seat is attached, and the upper surface of the elastic seat and the upper surface of the bottom plate are flush with each other, and the front upper surface and front side of the bottom plate are flush with the rear upper surface and rear side of the fuel tank, respectively. Surface, the upper rear surface of the bottom plate, the rear side surface is the front upper surface of the rear fender,
Of the part where the bottom plate faces the elastic seat part, a protruding wall plate and a groove along the wall plate are provided on the outer periphery of the part where the bottom plate faces the elastic seat, A motorcycle seat for trial use with a number of water drain holes that penetrate vertically through the bottom surface.