JPS61215183A - Car body frame for 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] [Industrial application field] The present invention relates to a body frame structure for a motorcycle.

[Conventional technology]

The body frame has a pair of main frames on both sides of the vehicle body, and the control cables for the operation levers and various lamps are connected to the handlebars, instrument panel, etc. at the front of the vehicle body.
Cables such as wire harnesses for switches were taken in between the two main frames from the mti near the head pipe, and fixed to the inside of the main frame with binding devices such as clamps, bands, or stays for wiring.

[Problem that the invention seeks to solve]

However, in the above-mentioned method, the wiring is bent to match the shape of the main frame, and the wiring is done while avoiding various parts installed between the two main frames, which requires a lot of work time and requires many types of binding depending on the binding location. I needed tools.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vehicle body frame that simplifies the wiring work and shortens the work time, and also reduces the weight of the main frame.

[Means for solving problems]

The present invention has been made to achieve the above objects,
In a motorcycle body frame including a pair of main frames having a hollow rectangular cross section extending symmetrically from a head pipe at the front of the vehicle body to the rear of the vehicle body, a plurality of openings are formed in the inner wall of the main frames. The present invention is characterized in that cables such as control cables and wire harnesses passing through the main frame are locked to the side walls between adjacent openings using binding tools.

[For production]

Therefore, cables such as control cables and wire harnesses are secured to the inner wall of the main frame by the binding devices.

〔Example〕

The present invention will be explained below based on the drawings.

Figures 1 to 3 show the body frame structure of a motorcycle.The main frame 2 of the body frame 1 consists of vertically elongated hollow square frames 3, 3, which are made of extruded aluminum and have a cross-section shaped like a dot, on both the left and right sides. A helad vibrator 4 is fixed to the front end, and a pair of pivot plates 5.5 are fixed to both rear ends inclined downward toward the rear of the vehicle body.

Lj- A steering stem 8 of a front fork 7 that supports the front wheel 6 is inserted into the head pipe 4, and a rear fork 10 that supports the rear wheel 9 is inserted between the pivot plays 1 to 5 and 5 in the vertical direction. A pivot shaft 11 is supported horizontally so as to be rotatable in the direction.

The front end portions of a pair of seat rails 12 are connected to the substantially central upper surface of both frames 3, 3 of the main frame 2, respectively, and the rear end side of the seat rails 12 is provided to the F portion of the pivot plate 5.5. Seat gusset plate 13.
A fuel tank 14 is supported on the upper surface extending from the front end of the main frame 2 to the middle part of the seat rail 12, and a fuel tank 14 is supported by the seat rail 12 at the rear of the tank 14.
A seat cowl 16 provided with a seat 15 is attached to the upper surface of each of the seats. A link machine 4M17 is provided between the pivot plate 5.5 and the lower part of the rear fork 10, and a rear suspension system @1 is provided between this link machine #117 and the seat gusset plate 13.13.
8 is provided.

An engine hanger bracket 19.19 is provided approximately at the center lower surface of both frames 3.3 of the main frame 2.
The engine 21 is suspended by an engine hanger 20.20 and a pivot plate 5.5 connected to the bracket 19.19.

Also, head pipe 4 and engine hanger bracket 1
A head pipe gusset 22.22 in which oval insertion holes 22a, 22a are arranged laterally is fixed at the lower part of the frame 3.3 between 9.19, and the head pipe gusset 22.22 and the engine 21 are connected to each other. The radiator 23 is suspended by.

The frame 3 of the main frame 2 has longitudinal horizontal ribs 3a, 3a arranged in upper and lower two stages inside, and is formed in a cross-sectional "eye" shape defining three partition passages 3b, 3b, 3b. At intermediate positions in the vertical direction of the inner wall 3C, a plurality of openings 24 are provided in the longitudinal direction of the frame 2, each communicating with the middle compartment passage 3b.

Then, cables OA such as control cables for operating levers connected to the handlebars at the front of the vehicle body and wire harnesses for various lamps and switches are inserted into the respective insertion holes 22a, 22a of the head pipe gussets 22.22. Insertion hole 22a.

Take it in between the main frames 2 and 2 from the front of 22a,
It is inserted through the opening 24° 24 at the frontmost part near the head vibrator 4 into the partitioned passage 3b in the middle of both frames 3.3. Then, by bundling the cables CA to the side W125 between the adjacent openings 24 and 24 with the clamp 26, the cables OA are wired to the inner side of the inner wall 3C of the frame 3. Further, when devices such as batteries are arranged between the frames 3, the wiring is performed by branching the cables CΔ in the frames 3 from the openings 24.

FIG. 4 shows another embodiment in which a hollow square frame with a vertically rectangular cross section is used, which does not have a partition in the internal space. A plurality of holes 28 are bored, and wires are connected to the inner side of the inner wall 27a using clamps 26 in the side wall 29 between adjacent holes.

In addition, in the above embodiment, the opening in the inner wall of the main frame is provided in the longitudinal direction of the frame! However, a pair of openings may be provided in the vertical direction, and the cross-sectional shape of the main frame is not limited to the above embodiments. It's okay.

〔Effect of the invention〕

As explained above, a plurality of openings are formed in the inner walls of a pair of rectangular main frames, and cables passing through the main frames are tied to the side walls between adjacent openings using binding tools. Since the cables inside the main frame are protected from the outside, there is no risk of kinking or damage, and there is no need to wrap a clamp around the outer circumference of the main frame or provide a separate stay as in the conventional case. It shortens the wiring work time, has an excellent external design, and also reduces the weight of the main frame by reducing the weight of the main frame.

[Brief explanation of drawings]

1 to 3 show one embodiment of the present invention, in which FIG. 1 is a sectional view showing an outline of a motorcycle, FIG. 2 is a perspective view of a vehicle body frame, and FIG. ■-■ Cross section, 4th
The figure is a sectional view of a main frame showing another embodiment. 1... Vehicle body frame 2... Main frame 3
...E-shaped hollow square frame 3a...Horizontal rib 3b...Divided passage 3C...Inner wall 24
...Aperture 25...Aperture 24, side wall 26 between 24
... Clamp 27 ... Hollow square frame 27a
...Inner wall 28...Opening hole 29...Opening hole 2
8. Side wall between 28

Claims (1)

[Claims] 1. In a body frame of a motorcycle equipped with a pair of main frames having a hollow rectangular cross section extending symmetrically from a head pipe at the front of the vehicle body to the rear of the vehicle body, a plurality of openings are provided in the inner wall of the main frames. A body frame for a motorcycle, characterized in that cables such as control cables and wire harnesses passing through the main frame are locked to side walls between adjacent openings using binding tools.