JPH06340279A - Seat of motorcycle for trial - Google Patents

Abstract

PURPOSE:To improve maneuverability and stability of attitude in trial running under the condition of standing on a motor-cycle while the production cost of a seat of the motor-cycle for trial can be reduced. CONSTITUTION:A plastic bottom plate 6 having an inverted U-shaped cross section is formed on the central upper surface with a recess extending long back and forth. An elastic seat part 11 is attached to the recess and the upper surface of the elastic seat part 11 is continuously flush with the upper surface of the bottom plate 6. The front upper surface and front sides 7 of the bottom plate 6 are continuously flush with the rear upper surface and rear sides of a fuel tank respectively and the rear upper surface and rear sides of the bottom plate 6 are constituted to be continuously flush with the front upper surface and front sides 7 of a rear fender respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat for a so-called trial motorcycle, which runs on a rocky place or a wasteland, and can reduce the manufacturing cost of the seat and at the time of trial operation in a standing state. It is possible to improve the maneuverability and stability of the posture.

[0002]

2. Description of the Related Art Motorcycles for trial use stand on a step with their hips floating and their seats sandwiched between their knees.
The main purpose is to lean the body back and forth with respect to the vehicle body, move the weight quickly forward and backward, and left and right to drive while maintaining balance. The seats of conventional motorcycles for trial use are designed and manufactured based on the same design concept as that of ordinary motorcycle seats, 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 desirable to make the removal work easy and easy. However, if the seat length is shortened and narrowed, when you lean down your body significantly while standing and move your weight quickly back and forth, left and right,
Since the body is moved back and forth with respect to the vehicle body beyond the range in the front-back direction of the seat, there is a problem that the movement of moving the body back and forth is not smooth and the driving posture becomes unstable at that time. Remain.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above problems by making the seat as small as possible, and in the standing state, the rear portion of the fuel tank and the front portion of the rear fender can be made comfortable. The problem is to devise the shape and structure of the sheet so that it can be practically used as a part of the sheet.

[0004]

Means for solving the above-mentioned problems are constituted by the following elements (a) to (c). (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 an elastic seat portion is attached to this recess, and the upper surface of the elastic seat portion and the upper surface of the bottom plate are attached to each other. It should be a flush continuous surface, (b) the front upper surface of the bottom plate,
The front side surface should be flush with the rear upper surface and rear side surface of the fuel tank. (C) The rear upper surface of the bottom plate and the rear side surface should be flush with the front upper surface and front side of the rear fender. And that.

[0005]

[Operation] 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 above-mentioned elastic seat is attached to the length and width of the bottom plate. It is as small as it can be. Therefore, when standing up, the seat is sandwiched between both knees, the knees are slid along the side plates of the inverted U-shaped bottom plate, and the body is tilted back and forth to quickly move the body weight. It is possible to stabilize the body in a state in which the body is greatly tilted. 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, respectively, when the body is tilted far forward with respect to the vehicle body, the knees of the fuel tank can be smoothly moved. It can be slid to the rear part, and the rear part of the fuel tank can be clamped with both knees without feeling uncomfortable, as when the front part of a conventional long seat is clamped with both knees. In addition, 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 a large amount, the knees should be smoothly slid onto the front portion of the rear fender. It is possible to grip the front part of the rear fender with both knees without feeling any discomfort as when the seat is clamped with both knees. That is, the rear portion of the fuel tank and the front portion of the rear fender can be used 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 upper rear 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.

[0006]

EXAMPLES Next, examples of the present invention will be described with reference to the drawings. A fuel tank 4 is provided above the engine 3, and a seat 5 is provided behind the fuel tank 4. The bottom plate 6 of the seat 5 is a plastic molded product such as polypropylene having a reverse U-shaped cross section, and a dish-shaped recess is provided in the central upper surface thereof. 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 6, and the rear part overlaps with a part of the front part of the rear fender 22. Left and right side hem portions of the bottom plate 6 are formed as side portions 7 which are bent downward. An elastic seat portion 1 made of an elastic member such as polyurethane that encloses closed cells in the recess of the bottom plate.
1 is fitted and fixed, and the upper surface thereof and the upper surfaces of the front and rear portions of the bottom plate are flush with each other. 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 coplanar continuous surfaces, and similarly, the rear upper surface of the bottom plate 6 and the front upper surface of the rear fender 22 are coplanar continuous surfaces. 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 assisting the mounting is embedded in the elastic seat portion 11, and the mounting bolt 10 is screwed into a nut 9 welded to the lower surface of the steel plate 8 to form the elastic seat portion 11.
Is fixed to the bottom of the recess of the bottom plate 6. 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. In addition, among the portions where the bottom plate 6 faces the elastic seat portion 11,
A projecting wall plate 12 and a groove 13 along the wall plate 12 are provided on the outer peripheral portion thereof, and a large number of water drain holes 14 penetrating vertically are provided on the bottom surface of the groove 13. Rainwater that has entered between the inner surface of the recess of the bottom plate and the elastic seat portion 11 is blocked by the wall plate 12, and the blocked rainwater is discharged from the drain hole 14 to below the bottom plate 6. This prevents rainwater from penetrating deeply between the elastic seat portion and the inner 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 using the insertion port 15 and the protrusion 16. That is,
Push the seat 5 forward and insert the end of the bracket 18 projecting from the frame 17 into the insertion port 15, then spread the sides 7 outwards against the resilience and return the seat to the rear. The inner protrusion 16 is inserted into the grommet 20 fixed to the frame 19 to fix the sheet 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 prefabricated elastic seat portion 11 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 molded of foamed resin. In that case, the upper mold 60
In the molding space formed by the lower mold 61 and the middle mold 62, an integrally molded product of the bottom plate 6 and its front, rear and side parts 7 is incorporated, and a resin is injected into the molding space from the injection pipe 63. You can use it. In the above-described trial motorcycle, the bottom plate 6 of the seat 5 and the front, rear, and side portions 7 thereof are integrally formed, and the bottom plate 6 is flush with the upper edge portion 23 of the outer periphery of the elastic seat portion 11. The front and rear parts of the base plate are extended upward and extended, and both sides of the bottom plate are inclined outward so that they are flush with the both sides of the elastic seat part. And the side surfaces are flush with the rear of the fuel tank, and the top and side surfaces of the rear portion of the bottom plate are flush with those of the front portion of the rear fender. When the body is tilted largely forward or backward with respect to the vehicle body, 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.

[0007]

[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 the 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 should be limited to the limit necessary to sit on the seat and run on level ground.
The seat manufacturing cost can be reduced, and the mounting and dismounting of the seat can be performed easily and easily, and the front upper surface and the front side surface of the bottom plate are a rear upper surface of the fuel tank and a continuous surface flush with the rear side surface. Therefore, when you lean forward, you can smoothly slide your knees to the rear of the fuel tank, and you can slide the rear of the fuel tank with both knees with the same feeling as when you are seated with both knees. be able to. Also, the upper rear surface of the bottom plate,
The rear side surface is a continuous surface that is flush with the front upper surface of the rear fender and the front side surface, so when you lean back, you can smoothly slide your knees to the front of the rear fender, You can pinch the front part of the rear fender with both knees as if you were pinching 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 front part of the rear fender. Since the upper surface and the front side surface are flush continuous surfaces without steps, both knees can be smoothly moved to the rear portion of the fuel tank and the front portion 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.

[Brief description of drawings]

FIG. 1 is a side view of a trial motorcycle equipped with a seat of the present invention.

2 is a vertical cross-sectional view of the sheet of FIG.

FIG. 3 is a plan view of a half of the bottom plate with the elastic seat portion of the seat removed.

FIG. 4 is a side view of an essential part with a seat attached to a vehicle body.

5 is a cross-sectional view taken along line YY of FIG.

FIG. 6 is a schematic view showing another example of the method for forming the elastic seat portion of the seat.

[Explanation of symbols]

 4 ... Fuel tank 5 ... Seat 6 ... Bottom plate 7 ... Side 11 ... Elastic seat 21 ... Air purifier 22 ... Rear fender 23 ... Outer periphery of elastic seat Upper edge of

Claims (1)

[Claims] Claims: 1. A plastic bottom plate having an inverted U-shaped cross section is formed with a longitudinally long recess in the central upper surface thereof, and an elastic seat portion is mounted in the recess, and the upper surface of the elastic seat portion and the upper surface of the bottom plate. Are the flush continuous surfaces, the front upper surface of the bottom plate and the front side surfaces are flush continuous surfaces with the rear upper surface and the rear side surface of the fuel tank, respectively, and the rear upper surface and the rear side surface of the bottom plate are the front upper surface of the rear fender,
Seats for motorcycles for trials, which are flush with the front side.