JPH04334687A - Suspension forming method for two wheeler with motor - Google Patents

Abstract

PURPOSE:To secure safe travel owing to excellent buffer performance and balance holding by disposing a fulcrum shaft, set as the absolute origin of a swing arm, at an upper part, and the fulcrum shaft of a shock absorber at a lower part respectively so as to provide the suspension of a rear wheel reverse to the existing one. CONSTITUTION:There are provided the fulcrum shaft E of a front wheel 3', the fulcrum shaft C of a rear wheel 3 and numerous fulcrum shafts A, D', B'. A swing arm 1' is erected between the fulcrum shaft D' as an absolute origin and the fulcrum shaft C of the rear wheel 3, and a shock absorber 2' is provided between the fulcrum shaft B' and the fulcrum shaft C of the rear wheel 3. The swing arm 1' is operated around the fulcrum shaft D' by the expansion of the shock absorber 2'. The expansion angle (a) of the shock absorber 2' is thereby made larger than the existing one, and the longitudinal motion of the rear wheel 3 is performed within this angle range. The absolute origin D' is thereby positioned high from the road surface. Accordingly, when the rear wheel 3 performs longitudinal motion, the action of pendulum motion works to ease shock.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction method for modifying the suspension of a motorized two-wheeled vehicle in order to soften shock absorption and run safely.

0002

2. Description of the Related Art Conventionally, the fulcrum shaft, which is the absolute origin of the swing arm, was attached to the lower part, and the fulcrum shaft of the shock absorber was attached to the upper part.

0003

[Problems to be Solved by the Invention] This has the following drawbacks. (b) In the past, there was no other way to use a conventional suspension as the basic structure for a two-wheeled vehicle. (b) When driving on rough roads, the angle at which the shock is absorbed is shallow;
Because the fulcrum shaft (C), which is used as a support shaft, would jump up, there were many accidents resulting in injuries such as rollovers. The present invention is configured to solve the above-mentioned drawbacks and enable safe driving.

0004

[Means for solving the problem] (a) Fulcrum shaft (A)
, a fulcrum shaft (D'), a fulcrum shaft (C), and a fulcrum shaft (B') are provided, which basically constitute four fulcrums. (b) Fulcrum shaft (A), fulcrum shaft (D'), fulcrum shaft (B
′) constitutes and fixes a triangle. (c) A swing arm (1') is provided on the fulcrum shaft (D') and the fulcrum shaft (C). (d) A shock absorber (2') is provided between the fulcrum shaft (B') and the fulcrum shaft (C). (E) In addition, the fulcrum shaft (B') and the fulcrum shaft (F)
A shock absorber (2') is provided between the two. (F) The basic configuration of four points is the fulcrum shaft (A), the fulcrum shaft (D
'), a fulcrum shaft (F), and a fulcrum shaft (B'), the fulcrum shaft (F) located in the middle of the swing arm (1') is used as a lever when the rear lift (3) works. Provide a fulcrum shaft (F).

[0005]

[Operation] The fulcrum shaft (D') of the swing arm (1'), the fulcrum shaft (B') of the shock absorber (2'), and the fulcrum shaft (C) are basically triangular. The shock absorber (2'), which is attached between the fulcrum shaft (B') and the fulcrum shaft (C), expands and contracts around the fulcrum shaft (D') of the swing arm (1'). The swing arm (1') moves back and forth.

In addition to action 1, the fulcrum shaft (D'), the fulcrum shaft (
B'), the fulcrum axis (F) forms a triangle, and the swing arm (1') can move back and forth in the same way.

[0007]

[Examples] Examples of the present invention will be described below. (a) In Fig. 2, a fulcrum shaft (A), a fulcrum shaft (D'), a fulcrum shaft (C), and a fulcrum shaft (B') are provided, each basically consisting of four fulcrum shafts. (b) Fulcrum shaft (A), fulcrum shaft (B'), fulcrum shaft (D
′) constitutes and fixes a triangle. (c) In FIG. 2, a swing arm (1') is provided between the fulcrum shaft (D') and the fulcrum shaft (C). (d) A shock absorber (2') is provided between the fulcrum shaft (B') and the fulcrum shaft (C). (e) A shock absorber (2') is provided between the fulcrum shaft (B') and the fulcrum shaft (F). (F) The fulcrum shaft (E) is provided with a front shaft (3'). (g) A rear shaft (3) is provided on the fulcrum shaft (C). The present invention has the above-described configuration, and the fulcrum shaft (D) shown in FIG.
However, the fulcrum axis (D') in FIG. 2 is set as the absolute origin, which is beyond the conventional structure. The expansion/contraction angle (A) of the shock absorber (2') is greater than the angle (A) in FIG. Its working angle (
In (a), the rear shaft (3), which becomes the fulcrum shaft (C), moves back and forth. In addition, as shown in Fig. 3, the shock absorber (
At the position 2'), when moving back and forth around the fulcrum shaft (D'), the rear shaft (3), which becomes the fulcrum shaft (C), moves using a lever. Then, when the transport (3) is activated, the shock absorber (2') can be moved to the fulcrum shaft (F
).

[0008]

[Effects of the Invention] The present invention resides in a method of operating a structure in which the conventional structure of a swing arm and a shock absorber is reversed. An even better method is to provide the shock absorber near the fulcrum shaft of the swing arm. When each trailer moves, the absolute origin of the swing arm is located high above the road surface, creating a pendulum motion that softens the impact. The force then changes from working in the vertical direction to working in the front-back direction, and when the maximum impact is absorbed, the force moves backwards due to the pendulum movement, and as it works to return to its original position, it moves forward and maintains balance while riding. So you can drive safely.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating a conventional configuration method of the present invention.

FIG. 2 is a diagram showing a configuration method of the present invention.

FIG. 3 is a diagram showing another configuration method of the present invention.

[Explanation of symbols]

A, B, Swing arm maintenance angle A, C, B, B', E, F, Fulcrum axis D, D',
Absolute origin axis 1, 1', swing arm 2, 2', shock absorber 3, rear 3', front 3'

Claims (2)

[Claims] [Claim 1] A fulcrum shaft (A) and a fulcrum shaft (
D'), a fulcrum shaft (C), and a fulcrum shaft (B') are provided, and a swing arm (1') is provided between the fulcrum shaft (D'), which serves as the absolute origin, and the fulcrum shaft (C), A shock absorber (2') is provided between the fulcrum shaft (B') and the fulcrum shaft (C), and the swing arm (1') moves around the fulcrum shaft (D') by expanding and contracting the shock absorber (2'). A method of configuring a two-wheeled motorized vehicle that is different from the conventional one. [Claim 2] The shock absorber (2') located between the fulcrum shaft (B') and the fulcrum shaft (F) is connected to the fulcrum shaft (C).
The method for configuring a two-motor vehicle according to claim 1, further comprising providing a fulcrum shaft (F).