JPH07100463B2 - Unicycle - Google Patents

Description

TECHNICAL FIELD The present invention relates to a unicycle used for sports, entertainment and the like.

(Prior art) Recently, sports using unicycles have been attracting attention, and mainly for elementary school classes for the purpose of eliminating lack of stamina and obesity due to lack of exercise of children, training balance sense and reflexes, etc. They are actively incorporating unicycles into their club activities.

In a conventional unicycle, a saddle is provided on an upper portion of a hawk via a seat post, and a wheel is rotatably supported between a pair of left and right hawk legs on a lower portion of the hawk via a left and right crankshaft. However, a unicycle is not equipped with a stand that can stand on its own like a general bicycle.

(Problems to be Solved by the Invention) Conventionally, when a unicycle is displayed and displayed at a store, it is necessary to provide a separate stand because the unicycle itself does not have a self-standing stand, which is troublesome and very troublesome. It was

Also, when storing a unicycle after children have used it,
I can't lean because the wheels can't be locked in the hawk, so I've left the unicycle sideways,
It took a very large area and could not be stored and stored neatly, which was very inconvenient.

The present invention has been made in view of the above situation,
It is an object of the present invention to provide a unicycle in which wheels can be locked to a hawk, can be leaned against a wall surface and stored, and can be easily erected by a stand.

(Means for Solving the Problems) In order to achieve the above object, the present invention takes the following technical means.

That is, according to the present invention, the seat post 5 is provided on the upper portion of the hawk 1.
In a unicycle in which a saddle 4 is provided via a wheel, and a wheel 6 is rotatably supported between a pair of left and right hawk legs 3 below the hawk 1 via a crankshaft 7 in the left-right direction, a wheel lock member is provided on the hawk 1. 16 is rotatably attached to a wheel lock position where it contacts the wheel 6 and a lock release position where it disengages from the wheel 6.

(Operation) According to the present invention, the wheel lock member 16 is
The grip portion 16B is fixed to the hawk 1 via the locking member 23, and the lower end thereof is separated from the tire 15. Therefore, when the unicycle is parked or stowed, the grip 16B of the wheel lock member 16 is unlocked from the hawk 1, and the grip 16B is rotated in a direction away from the hawk 1. Element
The lower end of 16 abuts on the upper surface of the tire 15 and deforms the tire 15 so that the tire 15 is deformed.
Is locked to the hawk 1 via the wheel lock member 16.

When the lock is released, the grip 16B of the wheel lock member 16 is pulled toward the hawk 1 ',
The lower end of the wheel lock member 16 separates from the tire 15, the wheel 6 becomes rotatable, and the wheel lock member 16 is locked and fixed to the hawk 1 via the engaging member 23.

(Example) Hereinafter, the Example of this invention is described based on drawing.

In the drawings, reference numeral 1 denotes a hawk, which has a cylindrical hawk stem 2 in the upper portion and a pair of left and right hawk legs 3 in the lower portion. Reference numeral 4 denotes a saddle, which is provided above the hawk stem 2 via a seat post 5 so as to be vertically adjustable.

Reference numeral 6 denotes a wheel, which is rotatably mounted between the lower portions of the pair of left and right hawk legs 3 via a crankshaft 7. That is,
A hub cylinder 8 of a wheel 6 is fitted and fixed to a crankshaft 7, and both ends of the crankshaft 7 are rotatably supported by bearings 10 on a shaft support portion 9 projecting from the lower ends of a pair of left and right hawk legs 3. Has been done.

Reference numeral 11 is a pair of left and right cranks, the base ends of which are fixed to the protruding portions of both ends of the crankshaft 7, and the pedals 12 are attached to the outer ends of both cranks 11.

The wheel 6 includes a rim 13, spokes 14 and tires 15.

Reference numeral 16 is a wheel lock member, which is formed by bending a pipe material into a substantially V shape, and a central bending portion 16A is provided with a shaft hole 17 in a direction orthogonal to the bending direction. Mounting piece 18 fixed in a protruding shape in the direction orthogonal to the shaft 7.
Is rotatably attached via a bolt-shaped horizontal shaft 19 inserted into the shaft hole 17. In addition, 20 is a horizontal axis fixing nut.

Caps made of synthetic resin are attached to the upper and lower ends of the wheel lock member 16.
21,22 are fitted.

The upper half of the wheel lock member 16 from the horizontal axis 19 is the grip portion.
16B, and the center of the substantially U-shaped locking member 23 on the outer projecting side is fixed to the hawk stem 2 side so that it can be held in the hawk stem 2 in a sandwiched manner. That is, the grip portion 16B
The locking member 23 holds the hawk stem in a sandwiched manner when the hawk stem is parallel to the hawk stem 2 (see FIG. 4).

In this way, the wheel lock member 16 is shown in FIG.
As shown by 6, since it is firmly fixed to the hawk stem 2, there is no possibility that the locking member 23 will come off the hawk stem 2 and the wheels 6 will be locked abruptly during operation of the unicycle.

Therefore, when parking or storing the bicycle, the wheel lock member
When the grip portion 16B of 16 is pushed in the direction of pulling away from the hawk stem 2 and rotated about the horizontal shaft 19, the locking member 23 is disengaged from the hawk stem 2, the locking is released, and the grip 16B is further rotated. Allows the cap 22 at the bottom to
The tire 6 is deformed so as to be depressed while coming into contact with the upper surface of the wheel 15, and the elasticity of the tire 15 causes the wheel 6 to be locked.
Locked in Hawk 1 through 16. Incidentally, at this time, the portion below the horizontal axis 19 of the wheel lock member 16 is substantially parallel to the hawk 1.

In this way, when the wheels 6 are in the locked state, the unicycle can be parked or stowed so that the saddle 4 contacts the wall surface along the wall surface, and the air in the tire 15 naturally escapes. As long as it is not locked, it will not fall down naturally because it remains locked.

The locking member 23 in the above embodiment may be fixed to the hawk stem 2 so as to sandwich and hold the grip portion 16b of the wheel lock member 16.

Further, as shown in FIGS. 5 and 6, the locking member 23 is in the shape of a spectacle ring, and one ring 23A is vertically and rotatably fitted to the seat post 5 (or the hawk stem 2). And the other ring 23B is the wheel lock member 1
The gripping portion 16B of 6 can be externally fitted.

(Effects of the Invention) As described above, the present invention provides that the wheel lock member 16 is rotatably attached to the hawk 1 of the unicycle, and the wheel lock member 16 is
Since the wheels 6 can be locked by using, the unicycle can be leaned against the wall surface without laying it down at the time of parking or storing the bicycle, and the bicycle can be parked, stored and stored neatly with a small suppose, and stand up using a stand. Even in the case, the work is easy, and the display and storage of the unicycle are extremely easy to handle.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is an overall perspective view, Fig. 2 is a partially omitted enlarged front view, Fig. 3 is a left side view of Fig. 2, and Fig. 4 is Fig. 3. 5 is an enlarged view taken along the line AA of FIG. 5, FIG. 5 is a front view showing another example of the locking member, and FIG. 6 is a plan view of FIG. 1 ... Hawk, 3 ... Hawk foot, 4 ... Saddle, 5 ...
Seatpost, 6 ... Wheels, 7 ... Crankshaft, 16 ...
Wheel lock member, 16A ... Bent part, 16B ... Grip part, 18 ...
… Mounting piece, 19 …… Horizontal axis, 23 …… Locking member.

Claims (1)

[Claims] 1. A seatpost (5) on top of a hawk (1).
A saddle (4) is provided via a wheel, and a wheel (6) is rotatably supported between a pair of left and right hawk legs (3) below the hawk (1) via a left and right crankshaft (7). In a unicycle, a wheel lock member (16) is rotatably attached to a hawk (1) at a wheel lock position where it comes into contact with the wheel (6) and an unlock position where it is disengaged from the wheel (6). A unicycle to do.