JP2007069884A - Twin wheels with two independent driving systems for engine assisted bicycle and motorcycle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To employ twin rear wheels instead of a single rear wheel to realize stable traveling performance without being influenced by road conditions for solving the problem that the rear wheel of an engine assisted bicycle and a motorcycle is affected by the traveling conditions (weather/road surface). <P>SOLUTION: The twin rear wheels instead of the single rear wheel are employed for the engine assisted bicycle and motorcycle. Power from an internal-combustion engine is transmitted to the rear wheel via a drive shaft and chain drive or a belt drive mechanism in the two-wheeled structure, as in the single wheel structure. In the two-wheeled structure, however, different from the single wheel structure, power from the internal-combustion engine is transmitted from a primary drive to secondary drives in power distribution. Left/right wheels composing the twing wheels are suspended by mutually independent swing arms (axle bearing) to have drive capability. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、原動機付自転車及び自動二輪車の後輪部を二車輪化することにより、接地面積を倍増させ走行安定性を向上させるものである。  According to the present invention, the ground contact area is doubled and the running stability is improved by making the rear wheels of the motorbike and motorcycle two wheels.

従来の二輪車の技術は、内燃機関からの動力をドライブシャフト及びチェーンドライブ又はベルトドライブによる伝達方式で後輪を駆動している。原動機付自転車及び自動二輪車の場合、後輪は前輪同様一車輪であるが大型自動二輪車のような大排気量・高出力でも伝達できる動力は一車輪であり、路面状況（特に雨天時）に大きく左右され安全性に乏しい。また原動機付自転車に三輪仕様があるが、これは乗車部から前輪部の車体と動力搭載後輪部の車体の二つで構成されており、これらの車体は回転軸により連結されている。二輪車が旋回時に車体を傾ける特徴を乗車部から前の車体が有し、後輪部の二車輪は前輪部とは異なり旋回時に車体は傾斜しない。そして内燃機関から後輪への動力伝達は、左右の車輪に独立した駆動方式ではなく一系統の伝達方式である。また左右の車輪も独立した懸架方式ではない。他に自動二輪車を三輪に改造したサイドカー登録の車型もあるが、サイドカーの特徴は旋回時に二輪車の特徴である車体を傾斜させ曲がる動作ができない。  In the conventional motorcycle technology, power from an internal combustion engine is driven to a rear wheel by a transmission system using a drive shaft and a chain drive or a belt drive. In the case of motorbikes and motorcycles, the rear wheel is one wheel like the front wheel, but the power that can be transmitted even with large displacement and high output like a large motorcycle is one wheel, and it is greatly affected by road conditions (especially in rainy weather) It is affected and poor safety. In addition, the motorbike has a three-wheel specification, which is composed of two parts, a vehicle body of the front wheel part and a vehicle body of the power-mounted rear wheel part, which are connected by a rotating shaft. The two-wheeled vehicle has a feature in which the vehicle body tilts when turning, and the vehicle body in front of the riding portion has a characteristic that the two wheels of the rear wheel portion do not lean when turning, unlike the front wheel portion. The power transmission from the internal combustion engine to the rear wheels is not a drive system independent of the left and right wheels, but a single transmission system. Also, the left and right wheels are not independent suspension systems. There are other types of sidecars that have been modified from motorcycles to threewheels, but the sidecars are not capable of tilting and turning when the vehicle is turning.

従来の二輪車の場合、後輪へ伝えられる動力は一車輪である。また一部の三輪車は、動力をニ車輪へ伝達できるが二輪車の特徴である旋回時に車体を傾斜させ曲がる動作ができない。本発明は後輪をニ車輪化するにもかかわらず、二輪車と変わらぬ旋回時に車体を傾斜させ軽快に曲がる動作ができる。  In the case of a conventional motorcycle, the power transmitted to the rear wheels is one wheel. In addition, some tricycles can transmit power to the two wheels, but they cannot tilt and turn the vehicle body, which is a characteristic of two-wheeled vehicles. In the present invention, although the rear wheel is made of two wheels, the vehicle body can be tilted and lightly bent when turning, which is the same as a two-wheeled vehicle.

本発明は、原動機付自転車及び自動二輪車の後輪を二車輪に変えることであり内燃機関からの駆動伝達を一系統から二系統に振り分け、また左右の車輪を独立懸架方式とする。今までの原動機付三輪車及びサイドカーは、旋回時に車体を傾斜させ曲がる動作が不可能であったが、後輪を独立した駆動方式及び独立懸架方式により乗車員を含め車体全体を傾斜させ曲がることが可能となる。  In the present invention, the rear wheel of the motorbike and the motorcycle is changed to two wheels, the drive transmission from the internal combustion engine is distributed from one system to two systems, and the left and right wheels are independently suspended. Conventional motor-equipped tricycles and sidecars have been unable to bend and turn when turning, but the rear wheels can be bent by tilting the entire body, including the crew, using an independent drive system and independent suspension system. It becomes possible.

本発明は、原動機付自転車及び自動二輪車の後輪を従来の一車輪から二車輪へ変更することにより路面接地力を倍増させる。後輪が二車輪でも旋回時に車体全体を傾斜させることが可能であり、一車輪に比べより安全な走行性能を確保できる。さらに左右独立した車輪は、路面状況に応じた駆動能力を発揮できる。片方の車輪が接地能力を失った場合でも、もう一方の車輪が内燃機関からの駆動を路面に伝達でき安定した走行が可能である。  The present invention doubles the road contact force by changing the rear wheel of the motorbike and motorcycle from one conventional wheel to two wheels. Even if there are two rear wheels, the entire vehicle body can be tilted when turning, and safer driving performance can be ensured compared to one wheel. Furthermore, the left and right independent wheels can exhibit driving ability according to the road surface condition. Even when one of the wheels loses the ground contact ability, the other wheel can transmit the drive from the internal combustion engine to the road surface, and stable running is possible.

以下、本発明の実施の形態を説明する。
（イ）内燃機関からの後輪への動力伝達は、一次駆動から二次駆動へ振り分ける方式とする。
（ロ）左右独立したスイングアーム（車軸受け）を設置する。
（ハ）左右の車輪は、スイングアーム（車軸受け）の外側に装着し、車輪交換時も自動車と同じように容易に作業できるようにする。
本発明は以上の構成による。
本発明を原動機付自転車及び自動二輪車へ適用する場合と設計製造段階から本発明の後輪二車輪化を組み込んだ新型車として二通りの方式ができる。Embodiments of the present invention will be described below.
(A) The power transmission from the internal combustion engine to the rear wheels is a system that distributes from the primary drive to the secondary drive.
(B) Install independent left and right swing arms (axle bearings).
(C) The left and right wheels are mounted on the outside of the swing arm (vehicle bearing) so that they can be easily operated in the same way as an automobile when replacing the wheels.
The present invention has the above configuration.
When the present invention is applied to a motorbike and a motorcycle, and from the design and manufacturing stage, two types of systems can be used as a new model vehicle incorporating the rear-wheel two-wheel configuration of the present invention.

本発明の斜視図Perspective view of the present invention 本発明の上面図Top view of the present invention 本発明の側面図Side view of the present invention 本発明の正面図Front view of the present invention

符号の説明Explanation of symbols

（１）内燃機関出力歯車、（２）一次駆動チェーンドライブ、（３）回転軸（スイングアーム）、（４）二次駆動歯車、（５）二次駆動チェーンドライブ、（６）スイングアーム（車軸受け）、（７）タイヤ（車輪）、（８）制動機、（９）駆動伝達最終歯車  (1) Internal combustion engine output gear, (2) Primary drive chain drive, (3) Rotating shaft (swing arm), (4) Secondary drive gear, (5) Secondary drive chain drive, (6) Swing arm (vehicle) Bearing), (7) tire (wheel), (8) brake, (9) drive transmission final gear

Claims (4)

原動機付自転車及び自動二輪車の後輪は、一車輪を一本及び二本のスイングアーム（車軸受け）に装着されているが、各二本のスイングアーム（車軸受け）に一車輪ずつ装着し２車輪とする方式を考案する。  Motorbikes and rear wheels of motorcycles have one wheel mounted on one and two swing arms (vehicle bearings), but one wheel is mounted on each two swing arms (vehicle bearings). Devise a method of using wheels. 左右二本のスイングアーム（車軸受け）に装着る二車輪は、一車輪より路面の接地面積を倍増させ走行安定性を確保する。  The two wheels attached to the two left and right swing arms (axle bearings) double the ground contact area of the road surface from one wheel to ensure running stability. 原動機付自転車及び自動二輪車の駆動方式は、フレーム（骨格）に支えられている内燃機関から後輪へドライブシャフト方式かチェーンドライブ方式又はベルトドライブ方式により動力を伝達しているが、後二車輪への動力伝達方式はドライブシャフト及びチェーンドライブ方式叉はベルトドライブ方式に対応できる動力伝達方式を考案する。  The driving system for motorbikes and motorcycles transmits power from the internal combustion engine supported by the frame (frame) to the rear wheels by the drive shaft system, chain drive system or belt drive system, but to the rear two wheels As for the power transmission system, a power transmission system that can correspond to the drive shaft and chain drive system or the belt drive system is devised. 二車輪を装着するスイングアームは、独立した懸架方式を有し内燃機関からの駆動方式も独立させる。  The swing arm on which the two wheels are mounted has an independent suspension system and the drive system from the internal combustion engine is also independent.

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