JPH0159143B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for attaching and detaching an auxiliary wheel for a unicycle.

In general, riding a unicycle is difficult, and not everyone can ride it easily; it requires a long period of practice before one can master it, and it tends to be treated as a special bicycle that only specially trained people can ride. Ta.

In other words, for beginners, the motor diameter is slow and the sense of balance is poor, so it is difficult to ride immediately and it is dangerous to fall, so it requires an assistant, auxiliary equipment, etc., and if small children are riding, it is dangerous to ride. person,
Although there are many people who try to learn how to ride a unicycle because they must be accompanied by an instructor, only a few actually learn how to ride a unicycle, and it is treated as a special vehicle and is difficult to popularize. Ta.

However, once anyone learns to ride a unicycle, it is safe and fun to ride just like a regular bicycle, and if you ride it in a way that suits your physical strength, you will not only have fun riding it, but you will also improve your motor skills, sense of balance, and physical strength. It is effective for promoting physical fitness, building basic physical strength for sports, etc., and is useful for creating a healthy and well-balanced person, both mentally and physically.

The present invention was made in view of the above-mentioned circumstances, and in order to make it possible for anyone to ride a unicycle safely and easily, an auxiliary wheel for preventing falls is detachably attached to the hawk of the unicycle, and the unicycle is provided with sufficient practice. After children are able to ride, the auxiliary wheel can be easily removed from the unicycle using a trigger device while the vehicle is running, and the saddle of the unicycle is removed, a handle is attached, and the saddle is attached to the frame of the auxiliary wheel. It is an object of the present invention to provide a device for attaching and detaching an auxiliary wheel for a unicycle, which is constructed so that it can be used for various purposes as a child's two-wheeled vehicle or tricycle.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a side view showing a unicycle attached to the attachment/detachment device 5 according to the present invention. In the figure, 1 is the wheel of the unicycle, 2 is the hawk, 3 is the saddle, and 3a is the saddle 3.
The post 4 is a clamp fitting for adjusting the height of the saddle 3. The attachment/detachment device 5 includes the A support portion 18 and the B
It has a support part 19 and is rotatably attached above the hawk 2. Further details will be explained with reference to FIG. 2.

FIG. 2A is a longitudinal sectional view showing the attachment/detachment device 5,
FIG. 2B is a sectional view taken along the line CC in FIG. 2A. The B support portion 19 of the attachment/detachment device 5 has a claw portion 20a.
The boss portion 20b of the stopper 20 and the frame clamp fitting 21 are rotatably supported at one end by a B support pin 22a via a distance collar 22. Reference numeral 24 denotes a joint extrusion metal fitting, and the joint extrusion metal fitting 24 is rotatably supported approximately in the center by a pin 24d protruding from the stopper 20, and one end 24a of the wire 23 is connected to the stopper 20. It is configured to be latched onto a fixed retaining metal fitting 23a, and to have the other end 24b abut against an abutment portion 18a provided inside the A support portion 18. Furthermore, the other end 24b of the joint fitting 24 is always urged in the direction of being pressed against the abutting portion 18a by a tension spring 25 attached to the other end of the stopper.
Note that the wire 23 passes through the wire guide tube 28 and further passes through the stopper 20 and the joint extrusion fitting 2.
The wires pass through the wire passage portions 20c and 24c of No. 4 and are fixed by a retaining fitting 23a.

The auxiliary wheel detachably attached to the attachment/detachment device 5 configured as above will be explained in detail with reference to FIG. 3.

In the figure, 6 is an auxiliary wheel, which may be one wheel or two wheels. 7 is a frame of the auxiliary wheel 6, 7a is a B support receiving part of the frame 7, 8 is a stand, 9 is a saddle 11 mounting part fixed to the frame 7, 11a
12 is a post of the saddle 11, 12 is a clamp fitting for adjusting the height of the saddle 11, and 10 is a joint part of an auxiliary wheel, and the auxiliary wheel joint part 10 is shown in FIG. ), a frame joint 14 is provided at the tip of the frame 7, side plates 13a and 13b are attached with pins 15, and a frame clamp part 16 of the B support receiving part 7a is attached with a pin 17. Frame clamp fitting engaging portions 16a and 16'a that engage with the frame clamp fitting 21 are provided at both ends of the frame clamp shaft 16.

FIG. 5 is a sectional view showing a trigger device for remote detachment operation attached to the other end of the wire 23 in the attachment/detachment device 5 explained in FIG. 23 is inserted through the wire guide tube 28 and the fitting 28b, and is hooked to pins 30a and 30b protruding from the upper part of a trigger 30 which is rotatably supported by the bracket 27 via a pin 29. As a result, when the trigger 30 is pulled toward the holder 26, the wire 23 is pulled in the direction shown by the arrow, so that the joint extrusion fitting 24 and the stopper 20 in the attachment/detachment device 5 are pulled against the tension spring 25.
be lifted up against the

Next, the operation of attaching and detaching the joint portion 10 of the auxiliary wheel to the detaching device 5 configured as described above will be explained with reference to FIG.

FIG. 7 shows the state in which the joint portion 10 of the auxiliary wheel is attached to the attachment/detachment device 5, and the joint portion 10 of the frame 7 is attached to the
8 and the B support part 19, the side plates 13a and 13b (13a is not shown) insert the A support part 18 from both sides. At this time, the joint 14 of the joint part 10 By pushing up the claw portion 20a of the stopper 20, the joint portion 10 is rotatably mounted in the recess between the A support portion 18 and the B support portion 19.

Therefore, the joint portion 10 attached to the attachment/detachment device 5 as described above is shown in FIGS. When the unicycle falls backwards, the B support receiving portion 7a of the frame 7 comes into contact with the B support contact portion 20b' of the boss portion 20b of the stopper 20 and is supported, preventing the rotation of the joint 14. This prevents the unicycle from falling backwards. In addition, if the unicycle falls sideways, please refer to the A support part 18 as shown in Figure 8B.
The side plates 13a and 13b are mounted so as to sandwich the recessed portion between and the B support portion 19 (not shown).
This is prevented by

As explained above, by attaching the joint part 10 of the auxiliary wheel to the attachment/detachment device 5, falling backward and sideways is prevented, but falling forward is possible, and the unicycle hawk 2 is held upright (unicycle riding position). When the state is set, the B support receiving portion 7a is in the B state.
The auxiliary wheel no longer supports the unicycle by moving away from the support abutment portion 20b'. This makes it possible to practice riding a unicycle, and the auxiliary wheel is towed by the unicycle, but when the unicycle's upright position is unstable, it returns to the support position of the auxiliary wheel.

Furthermore, when the frame clamp fitting 21 in FIG. It becomes impossible to practice and can be used as a general two-wheeled vehicle and tricycle.

Further, when detaching the joint portion 10 of the auxiliary wheel from the detachment device 5, first remove the frame clamp portion 16 of the frame clamp fitting 21 and store it inside the detachment device 5, as shown in FIG. Next, the wire 23 is pulled up in the direction of the arrow in FIG. 9 by pulling the trigger 30 of the trigger device for remote release operation explained in FIG. be lifted up. As a result, the claw portion 20a of the stopper 20 is removed from the frame joint 14, and at the same time the frame joint 14 is pushed out by the joint extrusion fitting 24.

Here, a unicycle training method using the unicycle auxiliary wheel attachment/detachment device according to the present invention will be described.

First, the unicycle and auxiliary wheels are completely integrated,
(See Figure 8) Practice until you can ride a unicycle with balance while preventing falls in the longitudinal and lateral directions.

Next, the frame clamp fitting 21 is removed from the frame clamp part 16 and stored in the attachment/detachment device 5, and while the backward and lateral falls are prevented, a balance riding exercise for riding a unicycle is performed, and the above-mentioned auxiliary wheel is Once you have sufficiently mastered balance running with the wheels attached, you can detach the auxiliary wheels while running the balance.

As explained in detail above, the unicycle auxiliary wheel attachment/detachment device according to the present invention has discovered the possibility of learning to ride a unicycle while having fun by making it possible to practice riding a unicycle without an assistant.

Further, the device for attaching and detaching an auxiliary wheel for a unicycle according to the present invention has a simple structure, and the auxiliary wheel can be attached and detached from the unicycle with a single touch operation, so even beginners can easily use it.

Furthermore, by attaching a handle to the unicycle's saddle and attaching a saddle to the auxiliary wheel frame, it can be used for many purposes, such as a children's bicycle or a tricycle for infants with two auxiliary wheels. be.

[Brief explanation of drawings]

FIG. 1 is a side view showing a state in which the attachment/detachment device according to the present invention is attached to the upper part of the hawk of a unicycle, FIG. 2A is a longitudinal sectional view of the attachment and detachment device according to the present invention, and FIG. A sectional view taken along the line C; FIG. 3 is a side view of an auxiliary wheel that can be freely attached to and detached from the attachment/detachment device according to the present invention;
FIG. 4 is a sectional view taken along the line B-B in FIG. 3, FIG. 5 is a sectional view of the trigger device for remote release operation according to the present invention, and FIG. 6 is a sectional view of the trigger device according to the present invention when the trigger is pulled. FIG. 3 is a cross-sectional view showing the operating state of the attachment/detachment device. FIG. 7 to FIG. 9 are explanations showing the operating state of the attachment/detachment device according to the present invention when an auxiliary wheel is detached from the attachment/detachment device. 5... Detachment device, 10... Joint part, 13a,
13b...Side plate, 14...Frame joint, 16
...Frame clamp shaft, 18...A support part, 19...
B support part, 20...stopper, 20a...claw part, 21
...Frame clamp fitting, 23...Wire, 25...
Spring, 26... holder, 30... trigger.

Claims (1)

[Claims] 1 A detachment device having an A support portion and a B support portion swingably attached to the hawk of a unicycle, and an auxiliary wheel that can be attached to and detached from the detachment device, and the detachment device has one end pivoted to the B support portion. A stopper and a frame clamp metal fitting that are freely pivotally supported, a joint extrusion metal fitting that is rotatably supported approximately at the center by a pin protruding from the other end of the stopper, and one end of which is rotatably supported by a pin protruding from the other end of the stopper; A wire which is inserted through the upper end of the extrusion fitting and whose other end is fixed to the stopper is fixed to the trigger for remote release operation, and the other end of the stopper and the lower end of the extrusion fitting are connected to the A
The auxiliary wheel is provided with a joint portion and a B support receiving portion that can be freely attached to and detached from the attachment/detachment device at the tip of the frame of the auxiliary wheel. Unicycle auxiliary wheel attachment/detachment device.