CN1111483C - The seat installation structure of two-wheeled motorcycle - Google Patents

Abstract

A seat installation structure for a two-wheeled motorcycle. The seat bottom plate is connected to the upper part of the body frame extending substantially horizontally through an elastic member, and the stays extending downward from the base plate and the body frame are connected by bolts penetrating at least one of them. Combination is characterized in that a tongue is formed on the front part of the seat floor, and a seat buckle is provided on the vehicle body frame. The tongue is combined by inserting the seat buckle from the rear to the front of the vehicle body. In the rear part of the base plate, the mounting holes through which the above-mentioned bolts pass are formed in oblong circles so as to form gaps with the bolts in the vertical direction in relation to the bolts. Since the junction of the vehicle body frame and the seat pan does not need elastic parts such as rubber bushings, the structure is simple, the junction is movable up and down, and vibration in the up and down direction can be suppressed.

Description

Seat installation structure of two-wheeled motorcycle

The invention relates to a mounting structure for a seat on which a rider of a two-wheeled motorcycle rides.

As the installation structure of the seat that the rider of the two-wheeled motorcycle rides, it has been publicly disclosed in the past with No. 54-49053.

In this technology, a number of elastic parts are arranged on the seat bottom to make them contact and support on the car body frame. The joint part of the seat bottom and the car body frame is to set a truncated cone-shaped rubber bush with a large capacity between the frame and the bottom plate on the left and right. Fasten and combine with bolts and nuts to prevent vibration between the car body frame and the seat.

In the above conventional technique, since the large-capacity truncated cone-shaped rubber bushes are arranged on the left and right sides between the vehicle body frame and the seat pan, there are the following disadvantages: the number of parts increases, and the bracket of the bush must be If it is installed on the vehicle body side, etc., it is necessary to bury and hang bolts from the bottom side of the seat, which complicates the structure.

The present invention is proposed in view of the above-mentioned shortcomings in the prior art, and its purpose is to provide a two-wheeler that simplifies the combination of the vehicle body frame and the seat floor, reduces the number of parts, and effectively ensures the anti-vibration effect of the seat. Seat mounting structure for motorcycles.

In order to solve the above-mentioned problems, the present invention proposes a seat installation structure of a two-wheeled motorcycle, so that the seat bottom is connected to the upper part of the body frame extending substantially horizontally through an elastic member, and the stay extending downward from the seat bottom is connected to the vehicle body frame. The body frame is joined by bolts penetrating at least one of them, and it is characterized in that a tongue is formed on the front of the seat floor, and a seat buckle is provided on the vehicle body frame, and the tongue is inserted into the seat buckle from the rear to the front of the vehicle body. And to be combined, the above-mentioned stay is provided at the rear portion of the base plate, and the mounting hole through which the above-mentioned bolt penetrates is formed in an oblong shape so that a gap is formed between the bolt and the bolt in the vertical direction in relation to the bolt.

According to the above means, there is no need to provide elastic members such as rubber bushes at the junction of the body frame and the seat pan, so the structure is simple, the junction is movable in the vertical direction, and transmission of vertical vibrations that are easily felt by the occupant can be suppressed.

The accompanying drawings represent embodiments of the invention in which:

Fig. 1 is the appearance side view of the two-wheel motorcycle involved in the present invention;

Fig. 2 is a longitudinal sectional side view of the seat involved in the present invention, showing the relationship with the vehicle body frame;

Fig. 3 is the bottom view of the seat involved in the present invention;

Fig. 4 is the 4-4 line sectional view of Fig. 2;

Fig. 5 is the 5-5 line sectional view of Fig. 2;

Fig. 6 is the 6-6 line sectional view of Fig. 2;

Fig. 7 is the 7-7 line sectional view of Fig. 2;

Fig. 8 is a partial side view showing the relationship between the slotted holes and the bolts for installing the seat bottom plate and the vehicle body frame, which is a sectional view along line 8-8 of Fig. 6;

Fig. 9 is a partial explanatory diagram of Fig. 5 in a state where the occupant of the seat rides and applies a load:

Fig. 10 is a partial explanatory view of Fig. 6 in a state where a seat occupant is seated and a load is applied;

Fig. 11 is a side sectional view of the slotted hole and the bolt portion in Fig. 10 .

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In Fig. 1, 1 represents a two-wheeled motorcycle, through the head tube 2a at the front end of the body frame 2, the front fork 4 is freely steerable, and the front fork 4 supports the front wheel 3, and the front wheel 3 is provided with The front fender 5 is provided with a headlight 6 and an instrument 7 at the top front of the front fork 4 , and a handle 8 is set at the upper end surface of the front fork 4 .

The frame 2 includes a main frame 2b with its upper portion inclined rearward and downward, a downpipe 2c, a lower pipe 2d, and a central pipe 2e, etc., and carries and supports an engine 9, and a fuel tank 10 is provided above the engine 9.

Two seat rails 11, 11 extend rearwardly from the rear end of the vehicle body frame 2, and the rear frame 2f supports the seat rails 11, 11 at the middle rear, respectively, so as to incline toward the rear and upward from the center pipe 2e.

A bracket 2g is provided at the bottom front of the central pipe 2e, pivotally supporting the rear fork 12, and the rear wheel 13 is installed and supported on the rear fork 12. Among Fig. 1, 14 is a fuel supply device such as a gasifier, and 15 is an air filter. 16 is a muffler, and 17 is a rear fender.

In the above structure, the seat 20 is arranged between the rear part of the main frame 2b and the seat rails 11, 11. As shown in FIG.

The detailed structure of seat 20 is as shown in Figure 2-Figure 7, and as shown in Figure 2, seat 20 is made up of seat bottom plate 21, seat cushion 22, dough 23 etc. on it, and seat bottom plate 21 is made of synthetic resin with high rigidity and strength. form.

In such a seat 20, the tongue piece 21b formed on the seat bottom plate 21 is inserted into the seat buckle 2h from the rear of the vehicle body to the front, and one end thereof is fastened. Specifically, as shown in FIG. 4 , the seat buckle 2h is a T-shaped component welded on the side of the vehicle body frame 2, and the tongue piece 21b is inserted therein.

An elastic member 24 formed with rubber or the like is attached to the front middle part of the seat bottom plate 21, and is arranged to hang down. Also, an elastic member 25 separated from the front and rear is arranged on the left and right sides of the middle part, and it is hung down. The bottom of the constant volume is regarded as a rectangular structure (referring to FIG. 3 ), and several mounting holes 21a (referring to FIG. 5 ) provided on the base plate 21 are fitted and locked with the protruding stop portion 25a.

In addition, the rear portion of the seat bottom plate 21 is provided with ring-shaped or bifilar elastic members 26, 26 on the left and right. As shown in FIG. Mounting hole 21a. The purpose of the elastic member 26 is to prevent the seat 20 from sloshing when the vehicle is empty, and there is some interference with the seat rail 11 .

When the seat 20 of the above structure is placed on the seat rails 11 and 11, the elastic member 24 in the middle of the front part of the seat bottom plate 21 is placed in contact with the rear part of the main frame 2b, and the elastic member 25 is shown in FIG. 5 . Placed in contact with the front and rear of the left and right seat rails 11, 11, in addition, the rear left and right elastic members 26, 26 are placed in contact with the rear of the left and right seat rails 11, 11 as shown in Figure 7, and the seat 20 is supported on the seat. on track 11, 11.

As described above, the seat 20 is elastically supported on the seat rails 11 , 11 via the elastic members 24 , 25 , 26 .

Plate-shaped stays 27, 27 (referring to Fig. 2, Fig. 3 and Fig. 6 ) are integrally hung down from the center of the base plate 21 to the rear.

As shown in FIG. 2, the stays 27, 27 have a predetermined length in the front-rear direction, and the ribs 28 (see FIG. 6) that connect the inner sides of the two sides at the top hang down laterally below the seat bottom plate 21. On the sides of the stays 27, 27, as shown in FIG. As shown in FIG. 2 , there is provided a mounting hole 29 constituted by an elongated hole in an oblong shape in the vertical direction.

In each mounting hole 29, as shown in Fig. 6 and Fig. 8, a metal oblong bush 30 is provided for the purpose of preventing wear.

On the other hand, as shown in FIG. 6 , between the left and right seat rails 11 and the rear frame 2f, plate-shaped support brackets 18 and 18 are vertically erected, and each bracket 18 and each stay 27 are installed on the seat rails when the seat 20 is set. 11. The inside and outside overlap in the state of the set position on 11.

Each above-mentioned support bracket 18 has a perfect circle mounting hole 19, and the mounting hole 19 is aligned with the mounting hole 29 formed by the elongated long hole on the above-mentioned stay 27, and the bolt 31 is passed through from the outside. Mounting holes 19, 29, bolt periphery insert sleeve 32, tighten with nut 33 from stay 27 sides.

As described above, the seat 20 is mounted and held on the seat rails 11, 11 of the vehicle body. However, under the elastic action of the elastic parts 24, 25..., 26, 26, when the seat 20 is in the no-load state where the occupant does not ride, as shown in Figures 5 and 7, the elastic parts 24, 25, 26 are not deformed. Or even if there is deformation, it is very small. In this state, as shown in FIGS.

Once the occupant sits on the seat 20, due to the load, the elastic members 24, 25..., 26, 26 deflect, as shown in Figure 9. On the other hand, the seat 20 moves downward slightly due to the load, so in The part of the stay 27 of the installation hole 29 moves to the bottom, as shown in FIGS. As a result, the bolt 31 is not restricted in the mounting hole 29 and can move up and down. Afterwards, the elastic member can move upward with the same long stroke as the deflected stroke, and the vehicle body side joint portion of the seat moves with the elastic effect of the elastic member.

As a result, the up-and-down vibration of the seat 20 is absorbed and eased by the elastic action of the elastic members 24, 25..., 26, 26, and the seat 20 and the car body junction are absorbed in the long oblong mounting hole in the up-down direction on the one hand, and the seat 20 and the car body are absorbed on the one hand. body firmly bonded.

Although the elongated hole is provided on the seat side in the above embodiment, it may also be provided on the vehicle body side.

In the elastic members 24, 25, and 26 of this embodiment, the elastic member 24 is placed on the vehicle body frame 2, and the elastic members 25, 26 are placed on the seat rail 11. However, the seat rail 11 can be regarded as the vehicle body frame 2. Therefore, it can be said that the elastic members 24 , 25 and 26 are placed on the vehicle body frame 2 in a broad sense including the seat rail 11 .

As can be seen above, according to the present invention, the combination between the seat and the vehicle body does not require parts such as rubber bushes to ease and absorb the up and down vibrations. It only needs to set up the mounting holes that are oblong in the up and down direction, and connect the seat and the vehicle body with bolts. Therefore, there are advantages in that the number of parts is reduced, the structure is simple, and the installation is also simple.

In addition, at the junction of the seat and the vehicle body, the bolts are slidably connected with the elongated circle in the up and down direction, and the seat can move up and down under the action of the elastic member. Differently, the joint part slides up and down, therefore, the vibration in the up and down direction that is most likely to be felt by the occupant can be suppressed as much as possible, and the riding comfort can be improved.

Claims (1)

1. the seat installation structure of a two-wheeled motorcycle, the seat base plate joins by the top of the body framework that elastomeric element and approximate horizontal are extended, and will use the bolt that connects one side at least to combine with body framework from the stay that the seat base plate extends toward the below;

It is characterized in that, the front portion of present base plate is formed with tongue piece, body framework is provided with the seat button, above-mentioned tongue piece is combined by forwards insert above-mentioned seat button from the rear of car body, above-mentioned stay is arranged at the rear portion of a base plate, the mounting hole that above-mentioned bolt connects forms oval, so that aspect the relation of bolt, form the gap between above-below direction and this bolt.

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