JPH0781582A - Bicycle with improved braking and steering performance on snowed, frozen or soft road surface - Google Patents

Abstract

PURPOSE:To realize the safe traveling performance by preventing embedding of wheels, deterioration of the steering performance associated with the reduction in the frictional resistance, and deterioration of the braking performance in a bad road. CONSTITUTION:A bicycle has a structure where a sled is mounted on the side of a front wheel of a bicycle, and a caterpillar belt 2 is mounted on a rear wheel as the driving wheel, and the structure consists of a guide gear 1 to keep the tensile strength of the caterpillar belt 2, a front stay 3 having a hinge mechanism to support the guide gear 1, and a rear stay 5 having the suspension to absorb the shock, and the structure is designed so as to prevent embedding of the tires in the traveling road surface and increase the contact area of the tires with the road surface.

Description

Detailed Description of the Invention

[0001]

2. Description of the Related Art From the viewpoint of safety, transportation for living in the severe cold of winter is often limited to automobiles, buses, etc.
In most cases, choosing a convenient transportation method such as a bicycle cannot be used at the time of freezing of the road surface, snowfall, or snowfall in terms of braking performance, steering performance, or safety. On the other hand, easy transportation such as bicycles is very convenient as a means of commuting to school for students and students, and commuting to school for those who have a work area in the neighborhood. In bad times, there was an unsafe side in maneuverability and safety.

[0002]

[Industrial field of application] This plan is a convenient transportation method that realizes braking and maneuverability with excellent maneuverability even on snowy roads, snow-covered roads, frozen roads, or unpaved roads where the road surface condition is poor due to gravel. It is intended to be used as a bicycle as a means.

[0003]

[Problems to be solved by the present invention] As a way to improve the maneuverability and running performance on snowy roads and soft roads, conventional conventional bicycles have tires that sink in the snow or on the road surface, causing excessive load. At the same time, it could lose stability and lead to inability to drive or control. Therefore, in the present plan, as a method of increasing the road surface contact area of the tire so that the tire does not sink even under such bad conditions, a link chain or a caterpillar belt functioning as an endless track on the outer periphery of the drive wheel is used. By installing it, the ground contact area of the road surface is increased to prevent the drive wheels from sinking, and at the front wheels, a sled to prevent sinking is attached to the side of the tire, or only the sled instead of the tire. By mounting the vehicle separately, it is possible to prevent the phenomenon of sinking on the road surface to improve the running performance, and to increase the ground contact area with the road surface to improve the braking performance and realize safe running performance.

[0004]

[Description of Embodiments of the Present Invention] FIG. 1 shows an embodiment of the present invention, showing a bicycle in which sleds are attached to front wheels and a caterpillar belt is attached to driving wheels. Reference numeral 1 is a guide gear for the caterpillar belt, and 2 is a caterpillar belt. By increasing the contact area with the road surface, the driving performance is ensured and the wheel is prevented from sliding unexpectedly. Reference numeral 3 denotes a front stay that supports the guide gear, which is fixed to the chain stay of the frame of the bicycle body, and has the hinge mechanism of 4 and functions for the purpose of accommodating unevenness of the road surface. 5 is a rear stay that supports the guide gear, and has a function of absorbing the shock by absorbing the shock in the middle part and absorbing the shock and maintaining the tension of the belt of the caterpillar belt. In addition, for the front wheels, an example of the present proposal is shown in which by mounting a sled 7 on the side of the tire, the function of preventing the wheel from being buried or unexpected sliding is fulfilled and also the function of the steering wheel.

[0005]

[Problems to be solved by this proposal] The function of the proposed bicycle is
A bad road where the wheels are buried on a soft road surface, a bad road where the wheels are likely to be buried in the snow due to snow, or a bad condition where the frictional resistance is extremely reduced, such as on ice or a frozen road surface. Even in this situation, it is possible to secure the operation performance of the bicycle, prevent the braking performance from interfering with the operation, and maintain the original characteristics of easy transportation.

[0006]

[Characteristics of the Present Invention] To explain based on an embodiment, in the present invention shown in FIG. 1, a sled is attached to a position corresponding to a front wheel at a level in contact with a road surface, in snow, in mud, or gravel. It is possible to improve the maneuverability even on a road surface under bad conditions by preventing it from being buried inside and by increasing the contact resistance with the ground surface on ice or on a frozen road surface. is there. For drive wheels, by attaching a caterpillar belt, the contact area with the road surface is increased to ensure drive performance on rough roads where frictional resistance has decreased due to worsening conditions, or It is characterized by functioning to prevent burial.

[Brief description of drawings]

FIG. 1 is a side view of a bicycle having improved braking performance and steering performance on snow-covered frozen road surfaces and soft road surfaces.

[Explanation of symbols]

 1 caterpillar belt guide gear 2 caterpillar belt 3 front stay 4 front stay hinge mechanism 5 rear stay 6 suspension mechanism 7 sled

Claims (3)

[Claims] 1. A bicycle has a caterpillar belt for increasing a road surface contact area of a driving wheel or a caterpillar belt guide gear for mounting a chain, while maintaining the tension strength of the caterpillar belt or the chain while traveling. A bicycle having a structure including a front and rear stays having a hinge mechanism for maintaining stable performance of the vehicle and a suspension mechanism for the purpose of absorbing shock. 2. A method for realizing stable running performance of a bicycle on soft ground, frozen road surface, ice, and snowy road surface, as a method for preventing wheel burial and unexpected sliding, as a method for preventing tire slippage. A bicycle with a structure that can be fitted with a cover belt or a tire chain to increase the area of contact with the road surface outside 3. A method for realizing stable driving performance on a soft ground, a frozen road surface, on ice, and a snowy road surface by a bicycle, as a mechanism for preventing the front wheels from being buried or unexpectedly sliding and realizing stable steering performance. , A bicycle having a structure for mounting a sled together with the front wheel on the lower side portion of the front wheel, or having a groove for mounting only the sled for the purpose of fulfilling the function of the front wheel.