JPH05124563A - Motorcycle - Google Patents

Abstract

PURPOSE:To tighten a bracket to mount a foot rest to a frame without increasing the thickness of the frame. CONSTITUTION:A clearance hole 22b to face the tips of bolts 60 to the inner side surface of a frame opposite to the tips of the bolts 60 is formed in order to prevent the interference of the tips of the bolts 60 with the frame 20 in a motorcycle where a bracket 10 for mounting a foot rest is tightened to the outer side wall of the frame 20 of hollow construction by means of the bolts 60.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a motorcycle in which a footrest mounting bracket is bolted to a hollow frame.

[0002]

2. Description of the Related Art In a motorcycle having a frame with a hollow structure, as shown in FIG. 4, bracket supporting portions 1a are provided at the rear end portions of the left and right body frame portions 1, 1 which are constituent elements of the frame. Are provided, and the front end portions of the footrest mounting brackets 2 are fastened to the outer walls of these bracket support portions 1a with bolts 3, respectively. Then, footrests 4 for mounting the feet of the driver are attached to the rear end portions of the left and right footrest mounting brackets 2 and 2, respectively.

The bolt 3 penetrates the outer wall of the bracket supporting portion 1a through a bolt hole 2a provided at the base end portion of the bracket 2 and is fixed to the back portion of the outer wall by a nut 5 by welding. It is screwed to.

[0004]

Conventionally, in order to prevent the tip of the bolt 3 from coming into contact with the inner wall of the bracket supporting portion 1a, the thickness β of the bracket supporting portion 1a is set large.

By the way, the pair of left and right body frame parts 1, 1 are restricted in the distance between their inner side walls due to the size of an engine (not shown) and the like. Now, when the distance between the inner side walls is set to L1 in consideration of this restriction, the thickness β of the bracket support portion 1 is set to be large in the conventional motorcycle, so that the tip ends of the left and right footrests 4 are The interval L2 formed becomes large, and as a result, a so-called bank angle, that is, a possible inclination angle in the left-right direction of the motorcycle becomes small.

[0006] In view of the above situation, an object of the present invention is to provide a motorcycle in which the footrest mounting bracket can be fastened to the frame without increasing the thickness of the frame.

[0007]

SUMMARY OF THE INVENTION In the present invention, a footrest mounting bracket is attached to a frame having a hollow structure by means of bolts.
For motorcycles that are fastened to the outer wall of the frame,
An escape hole for avoiding contact with the tip of the bolt is formed in a portion of the bolt facing the tip of the bolt.

[0008]

When the footrest mounting bracket is fastened to the frame with a bolt, the clearance hole prevents interference between the tip of the bolt and the frame.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention, and FIG. 2 shows a cross section taken along the line AA of FIG.

In this embodiment, the footrest mounting brackets 10 are mounted on the left and right body frame portions 20, which are components of the frame F, respectively. As shown in FIG. 3, which is an enlarged view of a main part of FIG. 1, the body frame portion 20 includes a pivot portion 2 at each of a front portion and a rear portion thereof.
1 and a bracket support portion 22, and a pivot portion 21.
The swing shaft of the swing arm 30 shown in FIG. 1 is supported by the bracket 10, and the bracket 10 is supported by the bracket support 22. As shown in FIG. 2, the body frame portion 20 has a hollow structure and is formed by, for example, pressing.

As shown in FIG. 2, footrests 50 on which the driver's feet are placed are provided at the rear ends of the left and right bracket support portions 22, respectively, toward the outside. Bolt holes 22a are formed in the outer walls of the bracket support portions 22, and bolt relief holes 22b having a diameter larger than that of a bolt 60, which will be described later, are formed in corresponding portions of the inner wall of the bracket support portions 22. Hole 2
A nut 40 is fixed by welding to a portion located at the back of 2a.

The footrest mounting bracket 10
Has a bolt hole 10a at its front end, and is fastened to the bracket support portion 22 by screwing a bolt 60 penetrating the bolt hole 10a and the bolt hole 22a into the nut 40.

When the bolt escape hole 22b provided in the inner wall of the bracket support portion 22 is located at the tip of the bolt 60 screwed into the nut 40, and therefore the thickness α of the bracket support portion 22 is small. But bolt 6
There is no possibility that the tip of 0 interferes with the inner wall.

As shown in FIG. 3, the bracket 10 is fastened to the bracket support portion 22 with two bolts 60. Therefore, the bracket support portion 22 has the bolt hole 22a and the bolt escape hole 22b. And nuts 40 are provided for each individual bolt 50.

In the case of the above embodiment, the bracket support portion 22
Since the bolt escape hole 22b is formed in the bracket, the thickness α of the bracket support portion 22 can be set small. Therefore, as shown in FIG. 2, the distance L3 formed by the tips of the left and right footrests 50 can be made smaller by 2 × (β−α) than the same distance L2 in the conventional motorcycle shown in FIG. As a result, the bank angle can be increased. The left and right footrests 50 are pivotally supported by the bracket 10 so that they can be folded upward when not in use.

[0016]

According to the present invention, when the footrest mounting bracket is fastened to the frame with a bolt, the tip of the bolt can be brought into the clearance hole formed in the frame. Therefore, the footrest mounting bracket can be fastened to the frame without increasing the thickness of the frame, which has the advantage of ensuring a large so-called bank angle.

[Brief description of drawings]

FIG. 1 is a side view conceptually showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

FIG. 3 is a partially enlarged view showing a manner of attaching a footrest mounting bracket to a body frame portion.

FIG. 4 is a cross-sectional view showing an attachment mode of a footrest mounting bracket in a conventional motorcycle.

[Explanation of symbols]

 10 Footrest mounting bracket 10a Bolt hole 20 Body frame 22 Bracket support 22a Bolt hole 22b Bolt escape hole 40 Nut 50 Footrest 60 Bolt

Claims (1)

[Claims] 1. A motorcycle in which a footrest mounting bracket is fastened to the outer wall of a frame having a hollow structure by bolts, and the tip of the frame is abutted against the portion of the frame facing the tip of the bolt. A motorcycle having an escape hole formed to avoid the motorcycle.