JP2014213626A - Auxiliary wheel leaving ground surface after raising bicycle from inclination - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a child to ride a bicycle while keeping auxiliary wheels from the ground surface for the child to ride without inclining the bicycle during its training.SOLUTION: Keeping an axle 3 of an auxiliary wheel off the center to serve as an eccentric wheel 1 makes a shortest radius 4 and a longest radius 5 appear in the radius from the axle 3 to the outer periphery of the eccentric wheel 1. When inclining, a bicycle is made to touch down on the ground from the side of the shortest radius 4 ahead, and the axle 3 is pushed up during the process where the auxiliary wheel swivels half to make the side of the longest radius 5 shift down, so that the bicycle is raised from inclination. Unless one side is loaded with the body weight, the auxiliary wheel leaves the ground surface. In order for the auxiliary wheel to touch down on the ground from the side of the shortest radius 4 ahead when the bicycle inclines, providing the side of the shortest radius 4 with a weight 6 is a simple low-cost method. In order to exhibit the effect of the weight 6, weight saving of the eccentric wheel 1 is needed: specifically, the weight saving of the eccentric wheel 1 is attained by making the bicycle land so that a force is applied in a vertical direction to the axle 3 of the eccentric wheel 1 upon landing on the ground when a largest force is applied.

Description

  The present invention relates to an auxiliary wheel for a bicycle practice for an infant, and relates to an auxiliary wheel which causes the bicycle to tilt in the left-right direction and further makes the wheel of the auxiliary wheel separate from the ground.

  The reason why a child can run without falling down in the practice of a bicycle is to capture the center of gravity of the bicycle and operate it with the handle so that it is perpendicular to the ground, but to capture the center of gravity perpendicular to the ground, the bicycle is It is important to be able to run in a straight posture with no inclination, and it is necessary that the wheels of the auxiliary wheels can run away from the ground.

However, in general auxiliary wheels, a circular wheel made of synthetic resin is attached to both sides of the rear wheel of the bicycle with an L-shaped support bracket with a width of about 40 cm, maintaining a gap from the ground, and assisting when the bicycle tilts. Although the wheel of the wheel is in contact with the ground, it prevents the fall of a child who cannot ride a bicycle, but since there is no function to cause tilting, only one wheel is always on the ground and running. Even if you tilt the bike and run with one auxiliary wheel on the ground, you will not be able to catch the center of gravity perpendicular to the ground, and you will not be able to run without falling down no matter how much you practice, the auxiliary wheel is attached It can be said that it is obstructing the practice of the bicycle rather than relying on it.

The fact that it is not possible to practice bicycles with auxiliary wheels that run with one side tilted to the ground has recently started to be noticed, there is no auxiliary wheel and there is no pedal, only wheels and handles are kicked with straddling feet Bicycles that just run are starting to sell. Although this bicycle can run in a straight posture, it can be practiced for a bicycle, but it becomes a new expense to consumers because it becomes unnecessary when you can ride.

  Inventor's patent No. 3670638 was conceived as the eccentric wheel 1 in which the axle 3 of the auxiliary wheel was slightly removed from the center position, so that the length from the axle 3 to the outer periphery of the auxiliary wheel, usually a radius. The length of the wheel is made shorter and longer, and the difference in the length is used to cause the bicycle to tilt, and the wheel of the eccentric wheel 1 is further separated from the ground. When the bicycle is tilted, it lands on the ground 10 from the shortest radius 4 side first, makes a half turn, and as the longest radius 5 side moves downward, the radius increases and the axle 3 of the eccentric wheel 1 is pushed upward. When the bicycle is tilted and the longest radius side 5 is half-turned from the lower position and the shortest radius 4 side is the lower side, the radius is shortened. It was thought to leave.

In order to cause the bicycle to tilt by using the difference in radius between the eccentric wheel 1 and the eccentric wheel 1 to be separated from the ground 10, when the bicycle is tilted, the ground 10 is moved from the shortest radius 4 side first. In the state where the eccentric wheel 1 is away from the ground 10, it is necessary to always stand still at a position where the shortest radius 4 side is directed downward.

In the invention of the patent, when the auxiliary wheel of the eccentric wheel 1 is away from the ground 10, it is kept stationary at the position where the short radius 5 side is directed downward, and when the bicycle is tilted, the ground 10 is moved from the short radius 4 side first. A weight 6 is provided on the short radius 4 side for landing on the surface. However, a general auxiliary wheel needs to be strong for safety and is strong and heavy, and the inertial force of the auxiliary wheel is large. The force is further increased, the effect of the weight 6 is reduced, and it takes time for the rotation to decelerate and come to rest without stopping when the minor radius 4 side is in the lower state. Simply increasing the weight 6 on the short radius 4 side in order to increase the static force also increases the overall inertial force of the rotation, which is counterproductive.

Although it is a simple and suitable method to provide the weight 6 to keep the minor radius 4 side facing downward, the weight of the eccentric wheel 1 is reduced in order to exert the effect of the weight 6. It is necessary to reduce the inertial force. However, although it is necessary to reduce the weight and reduce the inertial force, the necessary strength as the eccentric wheel 1 must be maintained.

When the eccentric wheel 1 is away from the ground 10, the bicycle tilts slightly even when turning if the shortest radius 4 side of the short radius is not stationary and the bicycle is tilted, but the eccentric wheel 1 is grounded and tilted. It can be a hindrance to turn to work to wake up. This did not give enough confidence to children's safety, and did not reach the point of commercialization. When in a state away from the ground 10, it is necessary to keep the weight of the eccentric wheel 1 stationary at a position where the shortest radius 4 side is directed downward while reducing the influence of the inertial force and the like for the sake of safety. .

The eccentric wheel 1 with the axle 3 removed from the center is heavier on the longest radius 5 side than on the shortest radius 4 side. However, to cause the bicycle to tilt, the eccentric wheel 1 must be landed first from the shortest radius 4 side. In the state where it is away from the ground, it is necessary to always keep the shortest radius 4 side at the lower position. Therefore, it is necessary to apply a physical force to the shortest radius 4 side. However, the eccentric wheel 1 is a part of a children's bicycle and is difficult to put into practical use if it becomes complicated and expensive. There are a method of attracting the shortest radius 4 side to the lower position by the magnet's attracting force and a method of applying a force so that the roller is pressed against the cam by a force such as a spring so that the shortest radius 4 side is at the lower position. After all it becomes complicated and expensive. If the technical problem of reducing the inertial force can be solved, a method of providing a weight 6 on the shortest radius 4 side and keeping the shortest radius 4 side in the lower position is a simple and efficient means and has few failures. It can be made inexpensively.

Japanese Patent No. 3670638

Auxiliary wheels are generally made by molding synthetic resin, but they are made strong to maintain the required strength, and the resin is thick and relatively heavy. In the present invention, the weight 6 is further increased. Since the overall weight further increases, the effect of the weight 6 is reduced and the time until the eccentric wheel 1 stops is lengthened. The effect of the weight 6 can be exhibited only by reducing the weight of the eccentric wheel 1 and reducing the inertial force while maintaining the required strength.

The greatest force is exerted on the eccentric wheel 1 when the bicycle is tilted and landed, but the eccentric wheel 1 of the present invention is structurally strong on the short radius 4 side because the axle 3 is off center, and the short radius The strength can be further enhanced by the weight 6 provided on the side 4. Since the bicycle is tilted when the major radius 5 side moves downward, the force applied to the eccentric wheel 1 is small. It is possible to reduce the weight of the eccentric wheel 1 to some extent, and also to increase the effect of the weight 6 provided on the short radius 4 side to some extent, depending on the selection of the material, etc. in consideration of strength maintenance. I can do it.

  The auxiliary wheel is generally an L-shaped bracket bent at 90 degrees, and is attached to the both sides of the rear wheel of the bicycle vertically with a gap between it and the ground. When the bicycle is tilted, both the auxiliary wheels are tilted and land on the ground 10 at an angle. Since the eccentric wheel 1 has a large strength against the force in the direction perpendicular to the axle 3, if the eccentric wheel 1 is landed perpendicularly to the ground 10, the load applied in the thrust direction can be reduced, so the load can be reduced and the eccentricity can be reduced. The weight of the wheel 1 can be reduced.

If the position of the axle 3 of the auxiliary wheel is the eccentric wheel 1 removed from the center of the wheel, the length of the radius from the axle 3 to the outer periphery of the wheel can be increased or decreased. In order to push the axle 3 upward and cause the bicycle to tilt, it is necessary to land on the ground 10 from the short radius 4 side first. In order to make the short radius 4 side heavier than the long radius 5 side as this means, a method of providing a weight 6 on the short radius 4 side is simple and suitable. Need to be made lightweight.

A large force acts on the auxiliary wheel at the time of landing, but the auxiliary wheel has a large strength against a load in a direction perpendicular to the axle 3, so that it can be thrust in the thrust direction by landing perpendicular to the ground 10. The working load can be reduced and the load on the auxiliary wheel can be reduced to significantly reduce the auxiliary wheel.

In order to cause the bicycle to tilt, the length of the radius from the axle 3 to the outer periphery of the wheel can be increased or decreased by using the eccentric wheel 1 with the axle 3 of the auxiliary wheel removed from the center. Thus, it can be used as a method of causing inclination by rotation and releasing the auxiliary wheel from the ground 10.

In order to cause the bicycle to tilt using the difference in length from the axle 3 of the eccentric wheel 1 to the outer periphery of the wheel, when the bicycle is tilted, the ground is first grounded from the short radius 4 side of the eccentric wheel 1. In this process, the bicycle is tilted by pushing the axle 3 of the eccentric wheel 1 upward in the process of half rotation and the major radius 5 side shifting to the lower side of the wheel.

In the process in which the major radius 5 side is rotated halfway from the lower side and the minor radius 4 side is shifted downward, the radius is shortened. Therefore, the eccentric wheel 1 is naturally separated from the ground unless the weight is applied to only one side.

In order to cause the bicycle to tilt due to the difference in radius between the eccentric wheel 1 and the short radius 4 side, it is necessary to make contact with the ground first from the short radius 4 side. It is necessary to keep the side stationary at the lower position.

As a method of keeping the minor radius 4 side stationary at the lower position, a method of providing the weight 6 on the minor radius 4 side in order to make it heavier than the major radius 5 side may be simple, but in order to exert the effect of the weight 6 It is necessary to reduce the weight of the eccentric wheel 1 while maintaining the necessary strength.

As a method for this, since the wheel is strong and strong in the direction perpendicular to the axle 3, if the bicycle is inclined to land the eccentric wheel 1 perpendicularly to the ground 10, a load applied in the thrust direction of the axle 3 is applied. By reducing the wheel load, the eccentric wheel 1 can be reduced in weight, and the required strength can be maintained.

Although the auxiliary wheel receives the greatest force when the bicycle is tilted and landing, the auxiliary wheel of the eccentric wheel 1 is off the axle 3 so that the strength is structurally strong on the minor radius 4 side but a weight 6 is attached. Since it is landed from the short radius side, it is structurally suitable for reducing the weight of the auxiliary wheel.

In addition, since the weight can be reduced by selecting the material for making the auxiliary wheel, it is possible to reduce the weight of the auxiliary wheel and maintain the strength, and to reduce the weight while maintaining the necessary strength of the auxiliary wheel of the eccentric wheel 1. Is fully possible.

It is necessary to land on the ground 10 first from the short radius 4 side of the eccentric wheel 1 in order to cause the bicycle to tilt by using the difference in radius of the auxiliary wheel of the eccentric wheel 1 to separate the auxiliary wheel from the ground. Although the method of providing the weight 6 on the short radius 4 side is simple and suitable, the weight 6 can be sufficiently exerted by merely providing the weight 6 without reducing the weight of the eccentric wheel 1. Is not enough,
It was necessary to reduce the inertia force and increase the effect of the weight 6 by reducing the weight of the eccentric wheel 1 while maintaining the strength.

Although the weight of the material for making the eccentric wheel 1 can be reduced to some extent by the method, structure and weight 6 of reducing the weight, the eccentric wheel 1 has a high strength in the direction perpendicular to the axle. Therefore, the required weight can be reduced because the force applied in the thrust direction can be reduced by landing the landing where the greatest force is applied perpendicularly to the ground 10.

Since the eccentric wheel 1 can be reduced in weight, the effect of the weight 6 provided on the short radius 4 side can be enhanced and the short radius 4 side can be rested at the lower position. It is now possible to provide a safe auxiliary wheel for the eccentric wheel 1 with a simple structure and few failures.

An embodiment of the present invention will be described with reference to FIGS.
FIG. 1 shows the structure of an eccentric wheel 1 in which an axle 3 is deviated from the center 2 of the eccentric wheel 1 by an eccentric value, and the length from the axle 3 of the eccentric wheel to the outer periphery of the eccentric wheel 1 is increased or decreased. The shortest radius 4 and the longest radius 5 are possible. A weight 6 is provided so that the shortest radius 4 side stops at a lower position when the auxiliary wheel is away from the ground 10. The eccentric wheel 1 is lightened in order to increase the effect of the weight 6 provided on the shortest radius 4 side, the inertial force is reduced, and the weight can be reduced to some extent by considering the strength of the material to be produced.

Figure 2 shows the eccentric wheel 1 and its mounting bracket 7 attached to both sides of the rear wheel of the bicycle with a width of about 40 cm, with the shortest radius 4 facing down and a clearance of about 10 mm from the ground. When the child bicycle is tilted by about 3 °, it is attached so as to land on the ground 10 and prevent rollover.

The L-shaped mounting bracket 7 tilts the bicycle 3 approximately 3 ° so that the axle 3 and the eccentric wheel 1 are inwardly approximately 3 ° inward so that the bicycle can land vertically from the shortest radius 4 side of the eccentric wheel 1 toward the ground 10. The angle of the inclined L-shaped mounting bracket 7 is approximately 87 °. Since the eccentric wheel 1 is strong and strong in the direction perpendicular to the axle 3, the eccentric wheel 1 is caused to land perpendicularly to the ground 10 to reduce the load in the thrust direction of the eccentric wheel 1. This is effective in reducing the weight of the eccentric wheel 1, and by reducing the inertia force by reducing the weight, the effect of the weight 6 can be increased and the shortest radius 4 side can be stopped at the lower position.

Since the axle 3 of the auxiliary wheel according to the present invention is slightly deviated from the center 2 of the wheel (about 3 to 5 mm) and is eccentric, the length from the axle 3 of the eccentric wheel 1 to the outer periphery of the wheel is normal. What is called a radius can be long or short. Accordingly, the length from the axle 3 of the eccentric wheel 1 to the outer periphery of the eccentric wheel 1 has a shortest radius 4 that is shortest by an eccentric value and a longest radius 5 that is long by an eccentric value. The length from the axle 3 to the outer circumference increases from the shortest radius 4 to the longest radius 5 and decreases from the longest radius 5 to the shortest radius 4. The optimum eccentricity (approximately 2 to 5 mm) deviated from the center of the wheel is determined by a test ride test in consideration of the inch size of the bicycle and the collapse of the tire. The slope will be raised twice as much as the eccentric value.

When the bicycle is tilted, the weight 6 contacts the ground from the shortest radius 4 side of the eccentric wheel 1 first, and the axle 3 of the eccentric wheel 1 moves upward in the process of half rotation and the longest radius 5 side moving downward. The bicycle is tilted when pushed up.

In the process in which the longest radius 5 side makes a half turn from the lower side and the shortest radius 4 shifts to the lower side, the eccentric wheel 1 moves away from the ground 10 unless weight is applied to one side.

Although the weight of the eccentric wheel 1 can be reduced, it is possible to reduce the weight of the eccentric wheel 1 even though it depends on the material of the eccentric wheel 1 and the structure of the eccentric wheel 1 in which the short radius 4 side is strong. By reducing the weight applied in the thrust direction by landing in the direction perpendicular to the ground 10 which is strong and durable, the weight can be reduced and the effect of the weight 6 can be fully exerted. Can be kept still at the lower position with the shortest radius 4 while away from the ground.

The eccentric wheel 1 leaves room for practice to raise the inclination moderately and then to rebuild it vertically by operating the steering wheel. The bicycle can be practiced by raising the bicycle to near vertical and moving the eccentric wheel 1 away from the ground.

The present invention relates to an auxiliary wheel for bicycle practice for children, and more particularly to an auxiliary wheel in which the auxiliary wheel leaves the ground 10 after the bicycle is tilted. By reducing the weight of the eccentric wheel 1, the effect of the weight 6 can be sufficiently exhibited, and a simple and inexpensive auxiliary wheel for the eccentric wheel 1 can be provided.

Plan view of the auxiliary wheel of the present invention (from the back of the wheel) Wheel sectional view and mounting bracket of auxiliary wheel of the present invention

1 Eccentric Wheel 2 Eccentric Wheel Center 3 Axle Center 4 Shortest Radius 5 Longest Radius 6 Weight 7 Mounting Bracket 8 Mounting Hole 9 Axle Angle 10 Ground

Claims (1)

  The length from the axle (3) to the outer periphery of the eccentric wheel (1) is usually the length called the radius by making the eccentric wheel (1) off the center of the axle (3) of the auxiliary wheel. However, in order to cause the bicycle to tilt using this difference in length, when the bicycle is tilted, land on the ground (10) from the shortest radius (4) side and make a half turn to bring the longest radius (5) downward. The axle (3) is pushed up in the process of transition, causing the bicycle to tilt, and the longest radius (5) is shortened from the lower side to the shortest radius (4). The eccentric wheel (1) can be separated from the ground if the weight is not hung on one side. For this purpose, it is necessary to land on the ground (10) from the shortest radius (4) side, and the shortest radius ( 4) Although it is a simple method to provide the weight (6) on the side, the effect of the weight (6) is sufficient. Since the eccentric wheel (1) has a large strength in the direction perpendicular to the axle (3), the eccentric wheel (1) is tilted inward by approximately 3 ° in advance and attached in advance. The weight of the eccentric wheel (1) is reduced by landing in the direction perpendicular to the axle (3) of the eccentric wheel (1) which is strong in strength when landing on the ground where the greatest force is applied. Bicycle with enhanced weight (6) effect, and increased weight (6) effect on the short radius (4) side of the auxiliary wheel of the eccentric wheel (1) by reducing the weight of the eccentric wheel (1). An auxiliary wheel for the eccentric wheel (1), which is caused to land on the ground (10) from the side of the shortest radius (4) when tilted.

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