JP2011195077A - Auxiliary wheel for practicing monocycle riding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an auxiliary wheel for practicing monocycle riding allowing a person to master the monocycle riding in short time practice.SOLUTION: A holding device H and a sway-bracing support are fixed to a guide bar G provided with four wheels 3 and hanging from the center of a center pipe T of right and left pipe frames 1, 2 with their front side being open at the optimum position of any monocycle so that the height can be adjusted toward the forward center. The holding device H is pivotably supported by rotary shafts 6, 7 provided vertically on upper and lower base plates 4, 5, and at least one elastic roller 11 is attached to each of two roller shafts 10 of lock levers 8, 9 rotating in opposing directions to each other, realizing a lock system in which the elastic roller is not easily opened by a toggle mechanism connected to the lock levers 8, 9. A practicing person can arbitrarily open the holding device by an open handle K. Further, any saddle post P can be pressed and held by the adjustment of a toggle adjust bolt 18.

Description

  The present invention relates to a unicycle practice auxiliary vehicle for safely and quickly acquiring riding of a unicycle.

  The unicycles of Patent Document 1 and Patent Document 2 previously proposed by the applicant of the present invention have approximately the same post diameter. However, depending on the size of the unicycle (tire, size of the inch), the optimum grip position height of the post may be Since it changed, it was not possible to fix the gripping device by selecting an arbitrary gripping height.

  In the practice auxiliary vehicle of Patent Document 1 and Patent Document 2, the trainee grasps the upper frame of the plane U-shaped frame body, runs a certain distance, then releases the unicycle and moves forward to practice. However, looking at the practice situations of many children and beginners, the release of both hands from the frame frame is often delayed somewhat from the unicycle gripping operation due to anxiety. As a result, the lower body of the unicycle and the trainee tries to move forward, but the upper body and both hands remain on the side of the training auxiliary vehicle and are tilted backward, and there are many situations in which the detachment from the training auxiliary vehicle cannot be performed smoothly.

Japanese Patent No. 3819006

JP 2008-74120 A

  Therefore, the present applicant holds the unicycle saddle post P with the gripping device H provided in the unicycle practice assisting vehicle, and allows the practitioner to release the saddle post P from the gripping device H after a certain amount of traveling. Providing practice assistance vehicles.

  Further, according to the present invention, a training auxiliary vehicle with a gripping device that can be applied to a unicycle of any size (12 inches to 16 inches, etc.) is newly provided. And as long as the practitioner does not perform the opening operation, the unicycle saddle post is not easily gripped at any time, and the practice auxiliary vehicle is equipped with a gripping device H that can set the height corresponding to any size and type of unicycle. I will provide a.

  The practice assisting vehicle of the present invention starts from the stage where the trainer is running on the practice assisting vehicle so that the practitioner does not hold the both hands while straddling the unicycle and practice both hands free from the beginning. Practice assistance in a self-driving manner, with four wheels attached to the tip of an inverted U-shaped pipe frame so that you can quickly transition to a self-sustained posture immediately after leaving the practice assistance vehicle. It constitutes a car frame.

  Further, an anti-sway support F is provided at the lower part of the guide bar G hanging from the center of the center pipe T so as to stop the lateral shake of the traveling unicycle and the rotation and backward tilt of the saddle post P.

  The guide bar G is pushed forward and given a predetermined angle α °, the saddle post of the gripped unicycle is also angled parallel to this, and the wheels are held forward with the saddle tilted back by an angle and practiced. The center of gravity of the person and the wheel axle of the unicycle were viewed from the side so that they were behind the ground point of the unicycle tire. This is to prevent the training auxiliary vehicle and the unicycle from leaning forward and the two wheels to lift up when the trainee runs when the axle of the unicycle and the body center of gravity of the trainer are located in front of the ground point of the unicycle. .

  Further, the right side of each of the lock levers 8 and 9 of the gripping device H is closed at the right end by a tension spring 13, but the pin portion 14 b at the bottom of the toggle center 14 is loosely engaged with a long hole 5 a provided in the lower base plate 5. Then, it closed to the right end of the long hole 5a to stop the closing angle, so that each of the left elastic rollers 11 can have the maximum opening angle.

  Further, a toggle pin 22 provided between the lock levers 8 and 9 of the gripping device H, a toggle link 16 and a toggle center 14 are connected, and a toggle adjust bolt 18 screwed to the toggle adjuster 17 is connected to the toggle center 14. The extended toggle lever 19 is rotated counterclockwise and the release lever 21 between the left side portion 14a of the toggle center 14 and the stopper bolt 20 is pressed and locked. This is a lock operation using a toggle mechanism.

  At the same time, the lock nut 23 screwed to the toggle adjustment bolt 18 is loosened, and the toggle adjuster 17 is moved backward by rotating the knob 27 at the tip to the right to increase the axial distance G1 with the toggle center 14, thereby moving the lock levers 8 and 9 together. The saddle post P can be pressed and gripped by the elastic roller 11 mounted on the roller shaft 10 by rotating in the opposite direction. In this case, even with the saddle post P having a different diameter D, the elastic roller 11 is brought into contact with the saddle post P by the displacement of the torque adjuster 17 by the rotation of the toggle adjuster bolt 18, and the pressure contact gripping can be adjusted.

  At this time, the locking state of the previous toggle mechanism is adjusted by the stopper bolt 20, but at the same time, the pressure contact strength between the elastic roller 11 and the saddle post P is adjusted by the toggle adjustment bolt 18. The optimum gripping condition of the gripping device H is determined by adjustment.

  The practitioner can sit on a unicycle that holds the saddle post P with the gripping device H, and can practice running over a free distance without falling even when both hands are released, and develop a sense of balance. Also, if you get used to it, if you push the release handle K near you at any time at the discretion of the practitioner, the grip of the saddle post P is released instantly and you can practice running on your own. By repeating the above exercises, there is an effect that the acquisition of self-driving is greatly accelerated.

FIG. 1 is an explanatory view showing a state in which a saddle post P of a unicycle is held by a holding device H and a unicycle is mounted. FIG. 2 is a state diagram in which the left and right pipe frames of the unicycle are folded. FIG. 3 is a plan view showing an open / closed state of the left and right pipe frames. FIG. 4 is a side view showing a state in which the hinge is fastened with a non-rotating bolt. FIG. 5 is a plan view of the gripping device with the saddle post of the unicycle opened. FIG. 6 is a state diagram in which the lock lever locks the saddle post in FIG. 7 is a cross-sectional view taken along the line B-B ′ of FIG. 5. 8 is a cross-sectional view taken along the line A-A 'of FIG. FIG. 9 is a cross-sectional view taken along arrow C-C ′ in FIG. 6. 10 is a cross-sectional view taken along the line D-D ′ of FIG. 9.

  A gripping device is attached to a guide bar suspended from the upper center of a pipe frame with four wheels, and the saddle post of the unicycle is pressed and gripped with a lock lever of the gripping device, and this gripping is optionally released with an opening lever. A practice auxiliary vehicle for unicycles.

  FIG. 1 shows a unicycle practice auxiliary vehicle according to the present invention. The left and right pipe frames 1 and 2 with wheels are made of stainless or aluminum pipes in an inverted U shape and are formed at the lower ends of the pipe frames 1 and 2. Four wheels 3 are provided, and the front wheels 3 are slightly opened (β °) from the rear wheels 3 to form a pipe frame frame.

  The saddle post P of the unicycle is gripped by the gripping device H, the back of the H-shaped frame 1 is turned from the front opening direction, and the unicycle is practiced while straddling the unicycle. Also, when familiarized to some extent, the release handle K was pushed backward, the unicycle saddle post P was released from the gripping device H, and the H-shaped frame 1 was released in the forward opening direction so that self-running could be practiced.

FIG. 2 shows a state in which the left and right pipe frames 1, 2 are folded inward by 90 °.
FIG. 3 is a plan view of FIG. FIG. 4 shows a sectional view of the hinge J in a side view of FIG. When the left and right pipe frames 1 and 2 are open, the anti-rotation bolt 30 is inserted and fastened to the anti-rotation hole 32 when the left and right pipe frames 1 and 2 are closed, thereby fixing the pipe frames 1 and 2.

  FIG. 5 is a state diagram in which the upper base plate 4 is removed, and shows a state where the saddle post P of the unicycle is opened. A tension spring 13 is hung on the hook pin 12 at the right end of the lock lever 8 and the lock lever 9, and the spring lever force causes the lock lever 8 and 9 to have a long hole 5a provided at the lower pin portion 14b of the toggle center 14 below the base plate. The closing angle is stopped by contacting the right end of the lens, and the left side has the maximum opening angle (S °). At this time, the toggle link 16 rotates to the left, the toggle center 14 moves to the right, and the toggle adjustment bolt 18 screwed into the toggle adjuster 17 rotates to the right, and these are refracted.

In FIG. 6, the gripping ball 19a at the tip of the toggle lever 19 is held and rotated counterclockwise around the toggle center 14, so that the toggle link 16 and the toggle adjustment bolt 18 are in a straight line. Is closed and the saddle post P is pressed by the elastic roller 11. At the same time, the release lever 21 is pressed between the left side portion 14 a of the toggle center 14 and the stopper bolt 20. This is a lock operation by a toggle mechanism.
More specifically, by turning the toggle adjust bolt 18 and moving the toggle adjuster 17 to increase the distance G1 between the axes with the toggle center 14 and adjusting the position of the stopper bolt 20, the distance G1 between the axes, the toggle pin 22 and the toggle center are adjusted. 14 is made larger than the inter-axis distance G between the toggle pin 22 and the toggle adjuster 17, so that the axis of the toggle center 14 is e to the left of the axis of the toggle pin 22 and the toggle adjuster 17. The right side of the lock levers 8 and 9 is pushed open and the saddle post P is strongly pressed and locked by the elastic roller 11.

  Further, by moving the toggle adjuster 17 with the toggle adjust bolt 18, the left and right sides of the lock levers 8 and 9 can be opened and closed, and the saddle post P having a different diameter D can be pressed and gripped.

FIG. 7 is a cross-sectional view taken along the line B-B in FIG. The rotation operation of the bolt 18 is made smooth. After adjusting the lock state, the lock nut 23 is used for fastening.
As shown in FIG. 8, the gripping device H is inserted with a guide bar G through a rear insertion hole and fastened with a fixing bolt 24.

9 is a cross-sectional view taken along the line CC of FIG. FIG. 10 is a cross-sectional view taken along line DD in FIG.
A release shaft 26 is pivotally supported at the lower part of the lower base plate 5 on the lower side of the gripping device H so that the release shaft 26 can be rotated by two bearings 25 facing each other. When an L-shaped release handle K fastened to the right end of the release shaft 26 is pulled forward (FIG. 10), the release lever 21 pushes the toggle center 14 to the right by the rotation of the release shaft 26 to release the locked state. (Fig. 9)

  When the gripping device H is used, the practitioner introduces the saddle post P from the opening angle portion between the elastic rollers 11 while holding the unicycle in the state of FIG. Then, holding the grip ball 19 a and rotating it counterclockwise, the left side of the lock levers 8 and 9 is closed, and the saddle post P is pressed and held by the elastic roller 11.

H Holding device P Saddle post of unicycle K Open handle D Straight saddle post F Stabilization support G Guide bar J Hinge T Center pipe 1 U-shaped right pipe frame 2 U-shaped left pipe frame 3 Wheel 4 Upper base plate 5 Lower base plate 5a Long hole at the bottom of the lower base plate 6 Rotating shaft 7 Rotating shaft 8 Lock lever 9 Lock lever 10 Roller shaft 11 Elastic roller 12 Hook pin 13 Tension spring 14 Toggle center 14a Toggle center left side 14b Toggle center round pin 15 Compression spring 16 Toggle link 17 Toggle Adjuster 18 Toggle adjustment bolt 19 Toggle lever 19a Grip ball 20 Stopper bolt 21 Release lever 22 Toggle pin 23 Lock nut 24 Fixing bolt 25 Bearing 26 Release shaft 7 knob 28 Color (1)
29 colors (2)
30 Non-rotating bolt 31 Non-rotating hole (for opening)
32 Detent hole (for closing)
33 Hinge shaft 34 Center pipe fixing bolt

Claims (7)

At the lower end of the left pipe frame (2) facing the inverted U-shaped right pipe frame (1), two free wheels or fixed wheels are attached to the left and right pipe frames (1),
The hinge (J) at the tip of the pipe projecting at a right angle from the center of the upper part of (2) and the hinges (J) at both ends of the center pipe (T) are fixed with detent bolts, and below the center of the center pipe (T). A training auxiliary vehicle for a unicycle that grips the saddle post (P) of a unicycle with a gripping device (H) that is fixed toward the front center on a guide bar (G) that is attached to the front with an angle α °. . Left and right pipe frames (1) at the hinges (J) at both ends of the center pipe (T),
In (2), each of them turns forward 90 ° toward the center to make it foldable, and hinge (J)
The practice auxiliary vehicle for a unicycle according to claim 1, wherein the rotation lock bolt (30) is used to fix the vehicle. A lock lever (8) pivotally supported by two rotating shafts (6) and (7) provided vertically on the upper and lower base plates (4) and (5) of the gripping device (H) and rotating in opposite directions,
At least one elastic roller (11) is mounted on two front and rear roller shafts (10) provided upright in (9), and the saddle post (P) of the unicycle is gripped by the elastic roller. The training auxiliary vehicle for unicycle described in 1. The right side of each of the lock levers (8) and (9) of the gripping device (H) is closed at the right end to close the left elastic rollers (11) and (11a) to the maximum. The unicycle practice assistance vehicle according to claim 3, wherein the unicycle is made to open at an angle. A toggle pin (22) and a toggle toggle center (14) provided on the lock lever (8) of the gripping device (H) are connected to each other, and a toggle adjuster (17) is provided on the lock lever (9). 17) The toggle adjustment bolt (18) screwed to the toggle adjuster (14) is rotatably connected to the toggle adjuster (14), and the toggle lever (19) extending from the toggle adjuster (17) is turned counterclockwise. The practice auxiliary vehicle for a unicycle according to claim 4, wherein a release lever (21) between the left side (14a) of the toggle center (14) and the stopper bolt (20) is pressed and locked. By rotating the knob (27) at the tip of the toggle adjust bolt (18), the toggle adjuster (17) is moved forward and backward to increase / decrease the axial distance (G1) with the toggle center (14). The unicycle practice auxiliary vehicle according to claim 5, wherein 9) is rotated in the opposite direction, and the saddle post (P) having a different diameter (D) can be adjusted in pressure contact with the elastic rollers (11), (11a). Set the release handle (K) to the rear, turn the release shaft (26) and release lever (21) to the right, push the toggle center (14) to the right, rotate the toggle link (16) counterclockwise, and turn the toggle adjustment bolt ( The unicycle practice auxiliary vehicle according to claim 5, wherein 18) turns right and releases the locked state of the previous item.

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