JP-7857260-B2 - bracket

JP7857260B2JP 7857260 B2JP7857260 B2JP 7857260B2JP-7857260-B2

Inventors

網木裕一
野口寛洋
牧野公昭

Assignees

カヤバモーターサイクルサスペンション株式会社

Dates

Publication Date: 20260512
Application Date: 20230914

Claims (3)

A bracket that connects a pair of fork members supporting the front wheel of a saddle-type vehicle to the steering shaft of the saddle-type vehicle , and is connected only to the pair of fork members and the steering shaft , A shaft retaining ring that holds the steering shaft, A pair of left and right clamps that grip each of the upper ends of the fork member, A pair of arms connecting the shaft retaining ring and the clamp, It comprises a reinforcing part that connects the clamps together , The reinforcing portion connects the clamps independently of the shaft retaining ring and the arm. A bracket characterized by the following features.
A bracket for connecting a pair of fork members that support the front wheel of a saddle-type vehicle to the steering shaft of the saddle-type vehicle, A shaft retaining ring that holds the steering shaft, A pair of left and right clamps that grip each of the upper ends of the fork member, An arm connecting the shaft retaining ring and the clamp, It comprises a reinforcing part that connects the clamps together, The aforementioned arm is A first upper arm portion connecting the shaft retaining ring and the upper end of one of the clamps, A second upper arm portion connecting the shaft retaining ring and the upper end of the other clamp, A first lower arm portion connecting the shaft retaining ring and the lower end of one of the clamps, It has a second lower arm portion that connects the shaft retaining ring and the lower end of the other clamp, The aforementioned reinforcing portion is The retaining ring connecting portion is a part that extends outward from the side of the shaft retaining ring and is integrated with the shaft retaining ring, A first arm connection portion extending from the retaining ring connection portion and connected to the first lower arm portion, It has a second arm connection portion that extends from the retaining ring connection portion and connects to the second lower arm portion. A bracket characterized by the following features.
The bracket according to claim 2 , characterized in that the retaining ring connection portion integrated with the shaft retaining ring in the reinforcing portion has a groove along the outer circumference of the shaft retaining ring at its upper or lower end.

Description

This invention relates to a bracket used in saddle-type vehicles. Conventionally, the bracket grips the upper ends of a pair of fork members that support the front wheels, which are the steering wheels of a saddle-type vehicle, and is fitted onto the outer circumference of the lower end of the steering shaft, which is rotatably held inside a head pipe located at the front of the vehicle's body, thereby connecting the fork members and the steering shaft. The bracket comprises, for example, a shaft retaining ring fitted onto the outer circumference of the steering shaft connected to the handle, a pair of clamps gripping the upper ends of each fork member, and a pair of arms connecting the clamps positioned on either side of the central shaft retaining ring to the central shaft retaining ring (see, for example, Patent Document 1). Therefore, when a rider rotates the handlebars while the saddle-type vehicle is in motion, the fork member rotates around the steering shaft, causing the front wheel to rotate left or right, allowing the saddle-type vehicle to move in the direction intended by the rider. Japanese Patent Publication No. 2003-154984 This figure shows a saddle-type vehicle to which a bracket according to one embodiment of the present invention is applied.This is a front view of a bracket according to one embodiment of the present invention.This is a plan view of a bracket according to one embodiment of the present invention.This is a rear view of a bracket according to one embodiment of the present invention.This is a bottom view of a bracket according to one embodiment of the present invention.This is a perspective view of a bracket according to one embodiment of the present invention.This is a plan view of a bracket in one modified example of one embodiment of the present invention. The present invention will be described below based on the embodiments shown in the figures. As shown in Figures 1 and 2, the bracket 1 in one embodiment is a bracket 1 that connects a pair of fork members F, F supporting the front wheels W of a saddle-type vehicle V to the steering shaft S of the saddle-type vehicle V. It comprises a shaft holding ring 2 for holding the steering shaft S, a pair of left and right clamps 3, 4 for gripping the upper ends of each fork member F, F, a pair of arms 5, 6 connecting the shaft holding ring 2 to the clamps 3, 4, and a reinforcing portion 7 connecting the clamps 3, 4 to each other. In this document, unless otherwise specified, the front, rear, left, right, and up and down directions are described with the saddle-type vehicle V as the reference point. As shown in Figure 1, bracket 1 connects the steering shaft S, which is inserted into the head pipe P located at the front of the vehicle body B of the saddle-type vehicle V and rotatably held by the head pipe P, to the upper ends of a pair of fork members F, F, which are positioned on the left and right sides of the front wheel W of the saddle-type vehicle V and hold the axle of the front wheel W at their lower ends. In this embodiment, the fork members F, F comprise an outer tube f1 positioned on the vehicle body side and an inner tube f2 positioned on the axle side that moves in and out of the outer tube f1 from its lower end. The front fork generates damping force when the inner tube f2 moves axially relative to the outer tube f1. Note that the fork members F, F may be non-extendable rod-shaped members, as long as they rotatably support the front wheel W. The steering shaft S is inserted into the head pipe P of the saddle-type vehicle's body and fitted into a ball bearing mounted on the inner circumference of the head pipe P, allowing it to rotate around its axis relative to the head pipe P. The upper end of the steering shaft S protrudes upward from within the head pipe P, while its lower end protrudes downward from within the head pipe P. The upper end of the steering shaft S is connected to the steering wheel H, and when the steering wheel H is operated, the steering shaft S rotates around its axis within the head pipe P. As shown in Figures 2 to 4, the bracket 1 comprises a shaft holding ring 2 for holding the steering shaft S, a pair of left and right clamps 3 and 4 for gripping the upper ends of each fork member F, F, a pair of arms 5 and 6 for connecting the shaft holding ring 2 to each clamp 3 and 4, and a reinforcing portion 7 for connecting each clamp 3 and 4 to each other. The shaft retaining ring 2 is annular in shape, has an inner diameter slightly smaller than the outer diameter of the lower end of the steering shaft S, and is press-fitted onto the outer circumference of the lower end of the steering shaft S to grip the lower end of the steering shaft S. As shown in Figure 3, clamps 3 and 4 both have a split, annular C-shape when viewed from above, and are positioned on both the left and right sides of the shaft retaining ring 2, with the shaft retaining ring 2 at the center. Furthermore, the left clamp 3, located on th