JPH0818592B2 - Unicycle - Google Patents

Description

TECHNICAL FIELD The present invention relates to unicycles for entertainment and sports.

(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.

By the way, the conventional unicycle does not have a stand on the bicycle itself like a general bicycle.

(Problems to be solved by the invention) Therefore, conventionally, when a unicycle is displayed and displayed at a store,
Since it was necessary to provide a stand separate from the unicycle, the display and exhibition of the unicycle was very troublesome. Further, when the unicycle is stored after being used by a child or the like, the unicycle is installed in a state of being laid down sideways, and the unicycle cannot be compactly stored and stored, which is very inconvenient.

In view of the above problems, it is an object of the present invention to provide a convenient unicycle in which the unicycle can be easily installed in an upright state and the stand member does not get in the way during use.

(Problems to be Solved by the Invention) A technical means of the present invention for solving this technical problem is that a saddle 4 is provided on an upper part of a hawk 1 via a seat post 5, and a pair of left and right hawk legs under the hawk 1 are provided. A stand member 17 having a base 18 and support legs 19 standing upright from the base 18 is provided between the three in a unicycle in which wheels 8 are rotatably supported via a crankshaft 9 in the left-right direction. The support leg 19 of the stand member 17 is rotated about the horizontal axis 20 around the horizontal axis 20 so that the stand member 17 changes its posture between the stand posture positioned below the wheel 8 and the storage posture where the base 18 is positioned above the wheel 8. The base 18 is rotatably pivotally supported, and the base 18 has a fixed body 26 fixed to a support leg 19.
The base 18 is provided with a sliding body 27 slidably held in and out of the fixed body 26 so that the base 18 can expand and contract, and the fixed body 26 holds the stand member 17 at the storage position. A U-shaped engaging member 30 that engages with the post 5 from both sides so as to be engageable and disengageable is provided.
Is provided with a cam body 35 that presses both sides of the engaging member 30 so as to shrink inwardly so that the engaging member 30 cannot be disengaged from the hawk 1 or the seat post 5, and the fixed body 26 and the sliding body 27 are provided. Between the sliding body 27 and the fixed body 26 so that the base 18 extends.
A spring 38 for urging the base 18 in a projecting direction is provided, and the base 18 is contracted against the spring 38 to reduce the sliding force.
Locking mechanism that locks 27 against fixed body 26 so that it cannot slide
40 is provided.

(Operation) When the stand member 17 is changed from the storage posture shown in FIGS. 6 and 7 to the stand posture shown in FIG. 1, first, when the lock mechanism 40 is unlocked, the sliding member is urged by the spring 38. 27 slides in the direction of the arrow a with respect to the fixed body 26, the pressure of the engagement member 30 of the cam body 35 is released, and both sides of the engagement member 30 spread in the width direction, and the engagement member 30 is separated from the hawk 1. The slide body 27 protrudes from the fixed body 26 and the base 18
Is in a stretched state. Next, when the stand member 17 is rotated downward about the horizontal shaft 20 as a fulcrum, the base 18 is grounded in an extended state,
The stand member 17 is in a stand posture as shown in FIG. 1, and the unicycle is installed upright by the stand member 17.

Next, when the stand member 17 is changed from the stand posture to the storage posture, when the stand member 17 is rotated upward with the horizontal shaft 20 as a fulcrum, the engaging member 30 is engaged so as to sandwich the hawk 1 from both sides. After that, the slide body 27 is pressed or pulled against the spring 38 to move the slide body 27 in the direction of arrow b so that the base 18 is contracted.
When slid in the direction, the cam body 35 presses both sides of the engaging member 30 so as to contract inward, so that the engaging member 30 cannot be removed from the hawk 1. Further, at this time, the lock mechanism 40 holds the sliding body 27 to the fixed body 26 so as to hold the base 18 in the contracted state.
Lock non-sliding against.

(Embodiment) Hereinafter, the present invention will be described in accordance with an embodiment of the drawings. Figs. 1 to 9 show an embodiment of the present invention, in which 1 is a hawk and an upper cylindrical hawk stem. 2 and a pair of left and right hawk legs 3 at the bottom. Reference numeral 4 denotes a saddle, which is provided on the upper portion of the hawk 1 via a seat post 5 so as to be vertically adjustable.

Reference numeral 8 denotes a wheel, which is rotatably supported between the lower portions of the pair of left and right hawk legs 3 via a crankshaft 9. That is, the wheel cylinder 8 is fitted and fixed to the crankshaft 9, and the mounting plates 11 projecting from the lower ends of the pair of hawk legs 3 are fitted on both sides of the crankshaft 9 in the axial direction through bearings. There is. A pair of left and right cranks 13 are projectingly provided at both axial ends of the crankshaft 9, and pedals 14 are attached to the outer ends of each crank 13.

A stand member 17 has a base 18 and support legs 19 standing upright from the base 18. The support legs 19 are made of a metal plate or the like, and a pair of left and right support legs 19 are provided so as to be located on both sides of the wheel 8. A horizontal shaft 20 is projected on a mounting piece 21 projecting forward from the mounting plate 11 under each hawk foot 3, and each supporting leg 19 is mounted on each horizontal shaft 20.
Is inserted and held through the elongated hole 22, whereby one end of each support leg 19 is pivotally supported on the lower portion of each hawk leg 3 so as to be rotatable around the horizontal shaft 20, and the stand member 17 is shown in FIG. As described above, the base 18 is configured to be capable of changing its posture between a stand posture in which it is located below the wheel 8 and a storage posture in which the base 18 is located above the wheel 8 as shown in FIGS. 6 and 7. Each support leg 19 is vertically movable with respect to the hawk 1 within the range of the long hole 22. The other end (free end side) of the support leg 19 is integrally connected.

The base 18 is made of plastic or the like, and has a fixed body 26 connected and fixed to the other end of each support leg 19 and a base 18.
And a sliding body (27) held so as to slide in and out of a fixed body (26) so as to expand and contract. The fixed body 26 has a pair of left and right mounting portions 28 fixed to the support legs 19 by pins 25, a pair of left and right supporting portions 29, and a U-shaped engaging member 30, and the supporting portion 29 has a longitudinal length. A hole 31 and a large diameter portion 32 are formed. The sliding body 27 has a pair of left and right slide portions 33, and each slide portion 33
Are fitted to the supporting portions 29 via the large-diameter portion 32 so as to be slidable back and forth, and the long holes are formed at the front end portions of the sliding portions 33.
The sliding pin 34, which is slidably inserted back and forth in 31, is attached to
As a result, the sliding body 27 is held slidably with respect to the fixed body 26 in the range of the long hole 31 in the longitudinal direction.

When the stand member 17 is rotated to the storage posture, the engaging member 30 of the fixed body 26 engages and disengages so as to sandwich the hawk 1 from the left and right sides, and holds the stand member 17 in the storage position. . A cam body is provided at both ends of each slide portion 33 of the slide body 27.
35, each of which is provided with the cam body 35.When the sliding body 27 is slid forward and the base 18 is contracted, both sides of the engaging member 30 are pressed so as to contract inward. The hawk 1
It cannot be pulled out.

Reference numeral 38 denotes a pair of left and right coil springs provided between the fixed body 26 and the sliding body 27. The coil springs 38 are housed in the sliding structure of the slide portion 33 and project the sliding body 27 with respect to the fixed body 26 so that the base 18 extends. It is urged toward. 40 is a lock mechanism provided between the fixed body 26 and the sliding body 27, which has a pair of left and right locking pieces 41 provided on the rear portion of the fixed body 26 and an operation piece 42 provided on the sliding body 27,
When the sliding body 27 is slid forward so that the base 18 contracts, the locking piece 41 engages with the engaging edge portion 43 of the sliding body 27, thereby contracting the base 18 against the spring 38. The sliding body 27 is locked so as not to be slidable with respect to the fixed body 26 so as to be held in the state, and the operation piece 42 is pressed downward in this locked state to elastically deform the locking piece 41 downward, The engagement piece 41 is disengaged from the engagement edge portion 43, whereby the locked state can be released.

45 is an engagement mechanism provided between the hawk 1 and the support leg 19,
The pair of left and right mounting pieces 21 has engaging recesses 46 provided at the lower ends thereof, and each supporting leg 19 has engaging projections 47 protruding outward in the left-right direction. When the support leg 19 moves upward in the range of the long hole 22 with respect to the hawk 1 when the stand member 17 is in the stand posture, the engagement protrusion 47 engages with the engagement recess 46, and the stand member 17 moves upward in the stand posture. When the support leg 19 becomes unrotatable and moves downward with respect to the hawk 1 within the range of the elongated hole 22, the engagement between the engagement protrusion 47 and the engagement recess 46 is released.

FIG. 10 shows another embodiment, in which the supporting leg of the stand member 17 is
When 19 is rotatably pivoted around the horizontal shaft 20 through the attachment piece 11 in the middle of the hawk leg 3 and the stand member 17 is in a storage posture in which it is rotated upward, the base 18 is placed on the lower surface of the saddle 4. The seat post 5 is engaged and disengaged so as to pinch the seat post 5 from both left and right sides by the engagement member 30 of the base 18 so as to keep the stand member 17 in the storage position while being close to each other. The other points are the same as those of the above-mentioned embodiment.

(Effect of the Invention) According to the present invention, by rotating the stand member 17 downward about the horizontal shaft 20, the stand member 17 can be placed in a stand posture, and the unicycle can be easily installed in an upright state. Very convenient for storing and storing. Moreover, by rotating the stand member 17 upward about the horizontal axis 20, the stand member 17 can be easily held in the storage posture. At this time, the base member 18 is positioned above the wheel 8 and the support leg 19 is provided. Can be placed along the hawk 1 or the seat post 5, so that the stand member 18 does not interfere when riding a unicycle, and its practical effect is remarkable.

Moreover, when the stand member 17 is in the stand posture,
Since the base 18 is in the extended state, the base 18 can be grounded in the widest possible range and the unicycle can be stably installed. Further, since the base 18 can be held in the contracted state when the stand member 17 is in the retracted posture, the base 18 of the stand member 17 can be made compact to more reliably prevent the base 18 from being an obstacle when riding a unicycle. Further, the engaging member 30 is detachably engaged so that the fork 1 and / or the seat post 5 is sandwiched by the engaging member 30 from both sides, and both sides of the engaging member 30 are inwardly moved by the cam bodies 35. Since the engaging member 30 cannot be removed from the fork 1 and the seat post 5 by pressing so that the stand member 17 unexpectedly rotates while riding on a unicycle,
There is no fear of causing an accident.

[Brief description of drawings]

1 to 9 show an embodiment of the present invention, FIG. 1 is an overall perspective view, FIG. 2 is a plan sectional view showing an expanded state of a base, and FIG. 3 is a plan view showing a contracted state of the base. Fig. 4 is a sectional view taken along the line AA of Fig. 3, Fig. 5 is a sectional view taken along the line BB of Fig. 3, Fig. 6 is a side sectional view of the base portion, and Fig. 7 is a side view of the same. FIG. 8 is a back cross-sectional view of the lower portion of the hawk, and FIG. 9 is a side view of the lower portion of the hawk. FIG. 10 is a side view showing another embodiment. 1 ... Hawk, 3 ... Hawk foot, 4 ... Saddle, 5 ...
Seatpost, 8 ... Wheels, 9 ... Crankshaft, 17 ...
Stand member, 18 ... Base, 19 ... Support leg, 20 ... Horizontal axis, 26 ... Fixed body, 27 ... Sliding body, 30 ... Engaging member, 35
...... Cam body, 38 ...... Coil spring, 40 ...... Lock mechanism.

Claims (1)

[Claims] 1. A seatpost (5) on top of a hawk (1).
A saddle (4) is provided via a wheel, and a wheel (8) is rotatably supported between a pair of left and right hawk legs (3) below the hawk (1) via a horizontal crankshaft (9). In a unicycle, a base (18) and a supporting leg (1 standing upright from the base (18)
9) is provided with a stand member (17) having a base (18) positioned below the wheel 8 and a base.
The stand member (17) is arranged so that the stand member (17) changes its posture to the storage posture in which 18 is located above the wheel (8).
Support leg (19) is pivotally supported by the hawk (1) about a horizontal axis (20), and the base (18) includes a fixed body (26) fixed to the support leg (19). Fixed body (26) so that the base (18) can expand and contract
A slide body (27) slidably held in and out of the fork, and a fork (1) and / or a seat post () for holding the stand member (17) in the storage position on the fixed body (26). 5)
A U-shaped engaging member (30) is provided so as to engage with and disengage from the both sides so that the base (18) is attached to the sliding body (27).
A cam body (35) for pressing the both sides of the engaging member (30) so as to shrink inward when the contraction is made so that the engaging member (30) cannot be disengaged from the fork (1) or the seat post (5). Is provided,
Between the fixed body (26) and the sliding body (27), a spring (38) for urging the sliding body (27) in a protruding direction with respect to the fixed body (26) so that the base (18) extends. Is provided,
A lock mechanism (40) is provided to lock the sliding body (27) against the fixed body (26) in a non-sliding manner while the base (18) is contracted against the spring (38). And a unicycle.