JPS6234877A - Motorcycle - 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 The present invention relates to a motorcycle having a low-floor footrest located between front and rear wheels.

Fumi Gen I On motorcycles that have a low-floor footrest between the front and rear wheels, such as scooter-type motorcycles, while straddling the seat, place your feet on the footrest located on the low-floor portion. Seats are provided so that people can place their seats on the table. The height of the seat is set above the straight line connecting the grip of the front wheel steering handle and the front peripheral surface of the rear wheel when viewed from the side of the vehicle as shown in Figure 1. , the seating surface 11 of the seat 01 is located at the end 02 of the seat 01.

[1 tries to ° μ − However, it is earlier than that shown in FIG.

When increasing the distance between the rear wheels and obtaining a lower center of gravity, the seat position will be moved to the rear of the vehicle body, and the footrest on the footrest plate will have more freedom, but if the seat position is moved to the rear of the vehicle body, , Q in the riding state! The center of the vehicle is biased toward the rear wheels (,'
, j L becomes easier, the front and rear wheels become more variable, the load type becomes more variable, and the installation of other parts equipped with a width cutter becomes more restrictive in terms of placement. In addition, when providing seats for both the driver and a passenger, this Φ
The restrictions on the configuration of the vehicle body 51 regarding the deviation of the vehicle center position become even greater.

The present invention was devised based on this technical background, and its purpose is to lower the center of gravity of the vehicle body, and to lower the center of gravity in the riding state. The purpose is to reduce fluctuations in the shared load on the rear axle and to improve the degree of freedom in vehicle distribution, parts arrangement positions, and riding style.

The purpose of this is to install the vehicle body frame that supports the footrest located one rank on the low floor part at a lower level than the centers of the front and rear center axles, and to make the front end of the seat seating surface located above the footrest This is achieved by providing the grip portion of the front wheel steering handle and the front circumferential surface of the rear wheel below and toward the front of the straight line connecting the front wheel steering handle when viewed from the side of the vehicle body.

Circle 1 Hereinafter, one embodiment of the present invention shown in FIGS. 2 to 7 will be described.

Figure 2 shows a motorcycle rJil moving to the right of the low-floor footrest.
It is a schematic left side view without showing Q, and FIG. 3 is a plan view of the main part thereof.

The steel pipe body frame of the motorcycle 10 has a head vibrator 12 that rotatably supports a rotating handle 411111 that supports the front wheel FW at its lower end, and a head vibrator 12 that is connected to the head vibrator 12 and has a cylindrical shape facing toward F toward the rear of the vehicle body. As shown in FIG. 5, the main body frame 14 is formed as a main shrine with a main body frame 14 extending in the opposite direction. It is formed by a lower main frame 16 and one upper main frame 18. The upper main frame 18 is located on the center line of the heavy body, and connects the left and right lower main frames 1G to the phase U1. : Horizontal connection frame 2 to be connected
0, the rear end of the -1- position frame 18 is welded and connected.

The left and right lower main frames 16 are mounted on the low floor footrest A at 04. It is located between the rear wheels [-9Ru, and when viewed from the side of the vehicle (Fig. 2), the front.

Straight lines passing through the rear axles Fa and Ra are located at the lower level of L-, (J: R), making it easy to mount the fuel tank 50 described later and making it possible to set the footrest at a sufficiently low level.

In addition, triangular steel plates 22.24 are welded and fixed by connecting the main frames 1 (i, 16.18) to each other at three locations in front and rear of the low-floor footrest, and are located in front of the triangular steel plates 22. A reinforcing frame 19A1 connects the upper main frame 18 and the left and right lower main frames 16, respectively, and a reinforcing frame 19B penetrates through the left and right lower main frames 16 and connects them to each other.

Furthermore, a U-shaped seat support frame 26 is welded to the rising portion 17 of the lower main frame 16 in a horizontal position, and a pair of reinforcing members 28 supporting the seat support frame 26 on the left and right sides are welded in an inclined position. A two-person seat S is placed ia on the rear end portions of the seat support frame 26 and the lower main frame 16. The driver's seat part Sa of this seat S is located above the low-floor footrest part A, and
The seating surface 1) 4 end Sb is the steering handle grip W (
grip) exists below (or in front of) the tangent line L2 between the rear wheels passing through G (Fig. 2).

Further, a support shaft 32 is attached to a pair of reinforcing plates 30 that are welded and fixed to the rising portions 17 of the left and right lower main frames 16,
A power unit (unit swing type) 3G is tiltably supported on the support shaft 32 via a pair of links 34, and a rear wheel RW and a muffler 38 are mounted on the output shaft of the power unit 36. A left shock absorber 40 is interposed between the power unit 36 and the horizontal connecting frame 16Δ which is supported and connects the left and right lower main frames 16 at <1llii portions, and the left side shock absorber 40 is interposed between the horizontal connecting frame 16A and the silencer 38. A right-side punching device 42 is interposed between them.

The fuel tank 50 includes front and rear triangular steel plates 22,
24 and each of the main frames 16, 16, and 18, a full horizontal member 4/ is welded to the lower main frame 16 in a form that connects the left and right lower main frames 16. I, 46, with a pair of screws 48 at the front and rear.

The body cover 52 of the motorcycle 10 has a low-floor footrest A.
As shown in FIG. 5, it has a cap-shaped cross section and covers the fuel tank 50 and the main body frame 14 from above, and its left and right parts are formed as footrest plates 54, which meet the legal requirements for mounting. The plate 54 is screwed and fixed to a member on the vehicle body frame side at two points B and C at the front and rear.

This fixed relationship is illustrated in FIGS. 4, 6, and 7. 1, the reinforcing frame 79B whose both ends protrude outward through the left and right lower main frames 16 through t4, and the protrusions 25 protruding from both sides of the triangular steel plate 24, are attached to the vehicle body 6rt side. A connecting plate 66 that maintains the distance between the body cover support vibro 4 and the body cover support vibro 4, which is a U-shaped bent tube that rises at a gentle slope.
, 68 is fixed using screws, and the footrest plate 54 is fixed to the assembly. A passenger footrest protrusion 55 is protruded from the footrest plate 54 in the vicinity of the triangular steel plate 24 .

Further, an m5G that covers the inlet 51 of the fuel tank 50 in an openable and closable manner is attached to a window formed in the vehicle body cover 52 via a hinge 58, and in the open state, an m5G is attached to the free end of the inlet 51 of the fuel tank 50. It is designed to be locked with 60 pieces of locking devices.

This embodiment is constructed as described above.

The distance between the rear axles has become longer, and as a result
・Swing-type power・-] The knit 36 is sufficiently far away from the front wheel [-, but the straight line L connecting the front and rear center axles is
A fuel tank 50 is installed in the low-floor footrest △ along the left and right main flares Ls1G in the water table below I.

The rear wheel is in the proper position.

Further, the front end Sb of the seating surface is arranged such that the footrest is above the plate 54 and is located below (or in front of) the tangent line L2 of the rear wheel 1tW that passes through the grip G of the steering handle.
A seat S is provided, and in this embodiment, there is no seat 1 for two people, ρS, and a seat 16- for a passenger is provided in front of the vertical FA L s passing through the rear axle Ra. Not only when only the driver is on board, but even when a passenger and other passengers are on board, the middle wheel Φ center does not encourage the rear vehicle's RW side by an excessive Fα, and the front and rear wheels FW and RW share the load. Less variation in load,
The center of gravity of the middle wheel in @car condition is also sufficiently low.

As is clear from the above description, in the present invention, the vehicle body frame supporting the footrest located in the low floor portion is provided at a lower level than the center of the model axis at the front, and the footrest is placed at a lower level than the center of the model axis. The front end of the seat seating surface located above the mounting plate is viewed from the side of the vehicle, from line a connecting the grip of the front wheel steering handle and the front peripheral surface of the rear wheel. By facing the front of the lower part, the center of gravity of the vehicle can be lowered, and fluctuations in the center of gravity when riding are reduced, which not only increases the degree of freedom in riding configuration, but also increases the freedom in the placement of functional parts regarding heavy oil distribution. It also improves.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a known scooter type motorcycle;
FIG. 2 is a schematic left side view of a motorcycle employing a heavy frame according to an embodiment of the present invention, FIG. 3 is a plan view of the main parts thereof, and FIG. 4 is an enlarged right side view of the main parts of the motorcycle. Figures 5, 6, and 7 are the v-v lines in Figure 4, respectively;
FIG. 3 is a schematic cross-sectional view taken along the Vl-Vl line and the ■-■ line. 10... Motorcycle, 11... Handle rotation shaft, 1
2...Head pipe, 14...Main body frame, 1
6...Lower main frame, 17...Rising part, 18.
...Upper main frame, 20...Horizontal connection frame, 22
... Triangular steel plate, 24... Triangular steel plate, 25...
Projection piece, 26... Seat support frame, 28... Reinforcement material, 30... Reinforcement plate, 32... Support shaft, 34... Link, 36... Power unit 1-138...・Exhaust pipe, 40... Left side shock absorber, 42... Right side loose WJ device, 44... Unusual horizontal member, 46: Unusual horizontal member, 48
... Screw, 50 ... Fuel tank, 51 ... Inlet, 52 ... Body cover, 54 ... Footrest U plate, 55.
...Passenger's foot rest protrusion, 56...Item, 60...Lock stop, 62...Protrusion piece, 64...Vehicle cover support pipe, 6G...Connecting plate, 68, Connecting plate , S... Seat.

Claims (1)

[Scope of Claims] In a motorcycle having a low-floor footrest located between the front and rear wheels, the body frame supporting the footrest located at the low-floor portion is compared to the center of the front and rear single axles. The front end of the seat seating surface located above the footrest plate is located between the grip of the front wheel steering handle and the front peripheral surface of the rear wheel when viewed from the side of the vehicle. A motorcycle characterized in that the motorcycle is provided so as to face lower forward than a straight line connecting the two.