JPH02237878A - Auxiliary wheel for stabilizing bicycle - Google Patents

Abstract

PURPOSE:To stabilize the slow speed traveling and sharp stop of a vehicle by installing each auxiliary wheel which can be raised and lowered according to the car speed on the both sides of an axle and permitting free raising and lowering during traveling and permitting the automatic locking by the grounding of the auxiliary wheel on stop. CONSTITUTION:Each auxiliary wheel 42 is installed in vertically shiftable manners through a housing 20 having a hydraulic circuit (oil grooves 21 and 33, oil hole 23, and a main shaft 12) built in, onto the both sides of one wheel shaft 1 for front or rear wheel of a bicycle. With this constitution, the traveling speed of the bicycle, opening degree of a hydraulic circuit, and the vertical movement of the auxiliary wheel 42 are interlocked, and on stop, the hydraulic circuit is closed to lock the auxiliary wheel 42. Further, in acceleration from this stop state, the hydraulic circuit is gradually opened, and the vertical movement of the auxiliary wheel 42 is facilitated, and during the high speed traveling, the auxiliary wheel 42 can be freely raised and lowered with a small force.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a rotating ton with auxiliary wheels equipped with a mechanism that allows it to move up and down depending on the speed on both sides of the ton wheel shaft. When the bicycle starts moving, the auxiliary wheels can move up and down freely, and when the bicycle stops, the two auxiliary wheels automatically lock their vertical movement.

This causes the bicycle to stop. This is an auxiliary wheel that stabilizes the bicycle while you are riding it, without requiring you to place your feet on the ground to support the bicycle, or even getting off the bicycle.

(Prior art) Conventional bicycles are two-wheeled bicycles with wheels arranged in a straight line, one after the other, behind the rider. This vehicle can only be ridden by people who can maintain their balance well.

(Problems to be solved by the invention) (a) Elderly people and children with poor motor skills are at risk of losing balance and falling when driving at low speeds or making sudden stops.

(Mouth) Elderly women and children who cannot reach their legs while riding a bicycle. When riding, you push the bicycle and accelerate, which requires a great deal of balance.

Also. In the event of a sudden stop, most of these people jump down to support the bicycle. In Japan, where there are many traffic lights, this movement of going up and down inevitably occurs frequently and is highly dangerous. And it's also a hassle.

(c) In the case of women wearing tight skirts, etc., most of the time they get off the bicycle market even when the bicycle stops normally. This is because it is impossible to support the bicycle while riding in that position. and. Kick the ground with your foot again. Build momentum and ride while spinning.

It's very inconvenient.

Moreover, if you were to support your bicycle while riding like that, you would lose the atmosphere of riding a bicycle like a woman.

(2) On a rainy day, accelerating from a standstill while holding an umbrella in one hand is dangerous because it is difficult to maintain balance on a two-wheeled bicycle.

Especially for people whose feet can't touch the ground. Every time you stop, you will have to jump off your bicycle with your umbrella still attached, which is extremely dangerous.

(e) There are children's bicycles with auxiliary wheels on the market, but this is because the auxiliary wheels cannot be freely lowered by simply supporting the bicycle. I can't tilt my bike properly while riding, and I can't take curves smoothly.

This seems to have been born from the idea of being careful to prevent children from knocking over their bicycles, but in an emergency, they may not be able to make a good turn.

In other words, it is a vehicle that cannot be avoided from danger.

(Example) An example for solving the problem will be explained based on the figures.

Here, the auxiliary wheels of the present invention will be explained with the auxiliary wheels of the present invention attached to both sides of the rear wheel axle of the bicycle, but they may also be attached to both sides of the front wheel axle.

Figure 1 is. FIG. 2 is a perspective view of the auxiliary transport of the present invention, with a portion shown in cross section.

This subsidy cargo is... Bicycle wheel axle (1). Although it is attached using a seat stay (2), a chain stay or the like may also be used.

The inside of the tire (3). It has an internal tooth gear (4), but its shape is gear-like. Any shape with a friction coefficient of 1 or as close to 1 as possible may be used, such as a timing belt shape.

The spur gear (5) is. It meshes with the inner south gear (4).

The home gear (5) is the axis (6). Stay (7), Guide (8)
) supported by Slide with the shaft (10). Axis (1
0) is guided by the bottle (l l) that is driven in.

The spring (9) presses the spur gear (5) against the internal gear (4), and the reaction force is received by the shaft (10).

The axis (10) is. It is fixed to the main shaft (12).

The main shaft (l2) has bearings (13) and (14) at both ends.
Supported by

The shaft of the tire (3) is attached to the sub-housing (l7) using a bearing (l5) and a thrust bearing (l6).
Attached to and also. Since there is a gap between the main shaft (12) and the main shaft (12), it can rotate freely.

Subhousing (17) is. It is supported by the sabot 1-(19) via the 21 dollar bearing (18).

The subhousing (17) is fixed and integrated with the housing (20).

The oil groove (2l) bored in the housing (20) and the shaft (
It is connected to the moving space of 22) and is filled with oil. This auxiliary wheel features a mechanism that utilizes this movement of oil.

The shape of the oil groove (21) is a circle, and the main axis (I2) crosses the axis perpendicularly, and the oil hole (23) is located on the main axis (l2) on the axis of the oil groove (2l). Penetrates in position.

This figure shows the bicycle in a stopped state.

In other words, since the spur gear (5) is in the position shown in Figure 1, the oil groove (2)
l) and the oil hole (23) are 90 degrees apart. Oil groove (2l)
is in a blocked state.

L: When the bicycle starts moving, the tires (3) rotate and the wings (5) also rotate.

As the speed increases, the spur gear (5) runs up the internal gear (4) and stops at a maximum of 90 degrees. At this position, the oil hole (23) and oil groove (21) overlap. The oil in the oil groove (2l) is in a state where it can pass through the water hole (23).

This allows the housing (20) to move up and down on the shaft (22). In other words. The tire (3) can be moved to the F position.

At this time, the boat (19) that supports the tire (3) is connected to the arm (25) extending from the shaft (24). The tire (3) will move along the arc -F drawn by the arm (25).

The arm (25) is connected to the shaft (2) via the bearing (26).
4), it can rotate around the shaft (24) as a fulcrum.

The shaft (24) is fixed to the base (27).

The shaft (22) on which the housing (20) moves is attached to the shaft (29) via a bearing (28). Axis (2
9) is fixed to the base (27).

The housing (20) is always pressed downward by the spring (30)
It is spelled out.

The positioning pin (31) is used to abut the stopper (32) to prevent the main shaft (l2) from turning more than 90 degrees.

The base (27) is attached directly to the bicycle.

Next, the overall operation will be explained.

The auxiliary tunnel wheel of the present invention is. The bicycle is attached to either one wheel or both sides of the rear wheel, but here it is attached to the left side of the rear wheel, and for the sake of clarity, it is shown in Figure 2 with some parts of Figure 1 omitted. explain.

(a) FIG. 2 is a perspective view of FIG. 1 with the assembled parts Ichiro omitted.

7) This diagram shows the bicycle in a stopped state.

(c) The tire (3) is structured to move downward at the same time as the housing (20), and is normally pressed against the road surface by a spring (30).

(2) When the bicycle starts running, the tires (3) start spinning.

(e) Spur gear (
5) tries to follow the internal gear (4), but due to the balance between the weight of the gear (5) and the strength of the spring (9), the spur gear (5) returns to its original position (A). try to

(f) As the speed increases, the wing gear (5) approaches the position (B) little by little from the position (A).

(1.) When the shaft (12) is rotated 90 degrees, the positioning bottle (3l) at the end hits the stopper (32). The spur gear (5) also stops at position (B), which is 90 degrees from position (A).

(d) At this time, the oil hole (23) is also rotated 90 degrees so that it overlaps with the oil groove (21).

Therefore, the oil groove (21) and the oil groove (33) are connected so that the oil inside can move freely.

(ri) Being able to move oil means that the housing (20
) is the same as the fact that the tire (3) integrated with the tire (3) can be lowered by 1-.

In other words, as the speed of the bicycle increases, the tire (3) can freely move 1-'F, and if the bicycle does not stop, the tire (3)
The vertical movement is locked.

(nu) Leakage of oil used for kneading, etc. 1 [Meha. O-rings (34), (35). (36). (37). (38
). (39). Perform (40).

The relationship of the above oil movement is shown in Figures 3 and 4. This will be explained with reference to FIG.

(Le). In the case of Fig. 3, when the rotating tank stops 1 and 2,
In other words, the oil grooves (2l) and (33) are blocked by the main shaft of (12) and the oil cannot move, so the housing (20) and the shaft (
22) cannot be moved.

I have auxiliary tires attached to both sides of my bicycle (3)
The bicycle cannot be moved down t, and the situation is the same as when the bicycle is placed on a stand, and the bicycle cannot swing from side to side.

(wo). In the case of Figure 4, the bicycle is running at low speed. In other words, the oil in the oil groove (21) and oil groove (33) is
By rotating the shaft (22), the shaft (22) can be moved a little.
The housing (20) can be moved little by little if an external force is applied.

This indicates that when accelerating from a stopped state, the auxiliary wheels tend to move downwards as the speed increases.

(wa). In the case of Fig. 5, when the rotating shaft reaches a predetermined speed, that is, the main shaft (l2) rotates 90 degrees and the oil groove (21) and oil hole (23) completely overlap, making it easy for the ura to move sufficiently. To become. The housing (20) and the shaft (22) can be moved easily.

This occurs when the bicycle is traveling at a speed higher than the specified speed. Or when turning a curve. The auxiliary wheel of the present invention is an auxiliary wheel that utilizes a hydraulic circuit.

(Effects of the Invention) The auxiliary wheels of this invention are as shown in the examples. By attaching it to both sides of the front or rear axle of an ordinary two-wheel bicycle city, the vertical movement of the auxiliary wheels is locked when the bicycle city is stopped, resulting in the following effects.

(b) Even if an elderly person or child with poor motor skills suddenly stops while riding a bicycle, it is safe because the bicycle can be stopped without losing balance.

(Mouth) When a person who cannot reach his legs rides a bicycle, it is safe because the bicycle does not wobble and he can accelerate without losing his balance while riding the bicycle.

Also. It is safe because there is no need to jump out of the vehicle when it comes to a sudden stop.

(c) Women who wear tight skirts and people who cannot reach their feet. For waiting at traffic lights or stopping at intersections. Ijiimo is very convenient as there is no need to get off the bicycle. Especially for women wearing Tie 1 and Scar 1, there is no need to support the bicycle in an unreasonable position. Never lose your femininity.

(2) Generally speaking, it is not a good idea to carry an umbrella while riding a bicycle, but if you have no choice but to do so, or when accelerating from a stopped state, etc. It is very convenient because it allows you to accelerate without thinking about the balance of the bicycle.

Also, the two auxiliary wheels can be moved freely down the road while the vehicle is running. There is no sense of incongruity in having auxiliary wheels attached.

[Brief explanation of drawings]

Figure 1 shows a first embodiment of the auxiliary city wheel of the present invention attached to the left side of the rear wheel shaft of a bicycle. It is a perspective view with a part cut away. FIG. 2 is a perspective view with some parts of FIG. 1 omitted to make the explanation of the operation of the embodiment easier to understand. Figure 3. Figures 4 and 5 show the oil hole (23) of the main shaft (12).
and the oil filling (21) and (33) of the housing (20).
This is a cross-sectional diagram showing the relationship between the oil hole (
23) shows that the position is changing. Figure 6 is. Auxiliary wheel (42) of the present invention on a bicycle (41)
Attach. It is a diagram seen from the side. Figure 7 is. 7 is a view of the state shown in FIG. 6 viewed from the rear. FIG. Figure 8 is. The bicycle (41) in Figure 7 is running. It is a diagram showing a state in which the vehicle body is tilted to the left in an attempt to turn left, and the left auxiliary wheel (42) is pushed by the road surface and is moving upward. 3 is the tire. 4 is the inner south gear, 5 is the wing gear, 12 is the main shaft,
13, 14, 15, 26. 28 is a bearing J, 16 is a thrust bearing, l8 is a 21 dollar bearing, 20 is a housing, 2133 is an oil groove. 23 is an oil hole, 31 is a positioning bottle 32 is a stopper, 34, 35.36.37.3
8, 39.40 is 0 ring. 41 is a bicycle, and 42 is an auxiliary wheel.

Claims (1)

[Claims] By attaching auxiliary wheels on both sides of the bicycle's wheel axle that utilize a hydraulic circuit that can move up and down depending on the speed, the auxiliary wheels can move up and down freely when the bicycle starts moving, and when the bicycle is stopped. Auxiliary wheels that automatically lock vertical movement.