JP3147325U - Swing type tricycle - Google Patents

Abstract

An object of the present invention is to eliminate a difference in left and right operation characteristics between swinging and erecting in a swinging three-wheeled bicycle having two front wheels and one rear wheel.
The center of the ball joint 7 on the steering shaft side of the tie rod 6 connecting the steering shaft 4 and the knuckle 5 is set on the center line of the swing shaft of the rear frame 2 swinging with respect to the front frame 1. Then, the center of the knuckle side ball joint 8 is installed so as to be the same height as the center line of the swing shaft. By installing in this way, the left and right movements of the tie rod that occur when swinging can be eliminated, and the same operating characteristics as when standing upright can be obtained.
[Selection] Figure 6

Description

  An object of the present invention is to eliminate the difference in left and right steering characteristics between swinging and upright in a swinging three-wheeled bicycle with one wheel at the front and one wheel at the rear.

  Conventional swing type tricycles were operated with one front wheel and two rear wheels, and the front one wheel was operated, and there was no difference in the left and right steering characteristics.

  However, if the rear two-wheeled three-wheeled bicycle has a structure in which the rear frame to which the rear wheel is attached is rocked, if the handle operation is transmitted to the front two wheels with the rod, the left and right movements that do not require the rod during rocking are performed. And a significant difference is created between the left and right steering characteristics when standing upright.

  In order to solve the above problem, the tie rod 6 connecting the steering shaft 4 and the knuckle 5 is arranged on the center line of the swing shaft 3 of the rear frame 2 swinging with respect to the front frame 1 to which the front two wheels are attached. The center of the steering shaft side ball joint 7 is installed in alignment, and the center of the knuckle side ball joint 8 is installed so as to be the same height as the center line of the swing shaft. In this way, by installing the swing shaft, the steering shaft side ball joint, and the knuckle side ball joint, the position of the steering side ball joint relative to the swing shaft does not change even if the rear frame is swung. Since the distance from the side ball joint does not change, the left and right movements of the tie rod do not occur due to swinging, and the same operating characteristics as when standing upright can be obtained during swinging.

  Therefore, by using the steering system of the present invention, the driver can operate the steering wheel smoothly while swinging the rear frame, which is useful for safe driving.

  The three-wheeled bicycle according to the present invention was developed for the purpose of safely riding a child, and the child seat 9 for carrying the child is always on the front frame to which the front two wheels that are in contact with the ground are attached. It is always stable, and the driver can perform a light driving operation while swinging like a normal bicycle. Further, by controlling the swinging speed with the hydraulic damper 10, it is possible to suppress the posture change due to excessive collapse during turning or unevenness of the road surface, and stable swinging can be obtained.

  1 is an overall side view of a tricycle according to the present invention.   1 is an overall plan view of a three-wheeled bicycle according to the present invention.   1 is an overall front view of a tricycle according to the present invention.   It is a whole front view which shows the rocking | fluctuation state at the time of the left turn of the three-wheeled bicycle which concerns on this invention.   It is a partial rear view of a three-wheeled bicycle according to the present invention.   It is a partial rear view which shows the rocking | fluctuation state at the time of the right turn of the three-wheeled bicycle which concerns on this invention.   It is a fragmentary top view from the front lower surface which shows the centerline of the rocking | fluctuation axis | shaft of the three-wheeled bicycle which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front frame 2 Rear frame 3 Oscillating shaft 4 Steering shaft 5 Knuckle 6 Tie rod 7 Steering side ball joint 8 Knuckle side ball joint 9 Child seat 10 Hydraulic damper

Claims (2)

  Install the tie rod that connects the steering shaft and the knuckle on the center line of the swing shaft so that the center of the ball joint on the steering shaft side is aligned with the center of the knuckle side ball joint at the same height as the center line of the swing shaft. A swing type three-wheeled bicycle with two wheels in the front and one rear.   The swing type three-wheel bicycle according to claim 1, wherein a swinging speed is controlled by a hydraulic damper.

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