JPH0525680Y2 - - Google Patents

Description

[Detailed description of the invention] 3.1 Purpose of the invention 3.1.1 Industrial application field The invention relates to hurdles for track and field events.

3.1.2 Prior Art Regarding this article, the inventor has already submitted a practical application in 1983.
−138680, Utility Application No. 157309 and Utility Application No. 1983
Although the invention of No. 173021 was successively developed, these devices were not always able to quickly and smoothly rotate the stationary legs when in use and when not in use.

3.1.3 Problems to be solved by the invention The invention eliminates the troublesome handling described above and creates a hurdle that allows the stationary legs to be easily opened and closed with a single rotational operation. This is what we intend to provide.

3.2 Structure of the invention 3.2.1 Means for solving the problem A horizontal hole is provided on one side of the standpipe provided in the left and right leg pipes fixed on the ground, and the horizontal hole is formed within a range of 90 degrees to the leg pipe.
On the other side of the standpipe facing this horizontal hole, a long hole is provided with a large-diameter opening with a tapered peripheral surface at both left and right ends, and one end has a tapered peripheral surface, a large-diameter convex part, and a flange. Insert the screw rod provided with the screw rod into the large opening provided in the branch pipe inserted into the standpipe, and insert it into the small opening provided in the branch pipe suspended in the elongated hole of the inner vertical pipe. A hurdle with a machine interposed and a screw at the other end.

3.2.2 Action When returning the left and right leg pipes from the used state where they protrude perpendicular to the bar to the non-used state where they are parallel to the bar, or vice versa, The gripped leg tube can be simply rotated in the desired direction.

When the leg pipe is fully opened or not used, it is inserted into the large diameter opening of one of the elongated holes of this standpipe between the large opening of the outer branch pipe and the small opening on the opposite side. The tapered part on the flange side of the spiral rod contacts and engages with the tapered surface of the large-diameter opening, and the large-diameter convex part contacts and engages with the large opening.

Therefore, when shifting the leg tube to an open state of use or a closed and unused state, the user rotates the leg tube in a predetermined right angle direction while holding the leg tube. Then, the tapered portion of the spiral rod separates from the tapered surface of the large diameter opening with which it was engaged, passes through the middle portion of the elongated hole, and eventually engages with the tapered surface of the other large diameter opening. Further, the large-diameter convex portion of the screw rod disengages from the main port with which it was engaged, and comes to engage with the main port again when the 90 degree rotation is completed. Therefore, it is sufficient to repeatedly perform such a rotation operation within a range of 90 degrees. Note that the ammunition is always pressed from the outside of the branch pipe, both when the branch pipe is rotating and when it is stopped.
(Please refer to Figures 7 to 12 for the above action.) 3.2.3 Embodiment 1 and 1 are left and right leg pipes fixed on the ground, and on the upper surface of one side of this leg pipe, Install short standpipes 2, 2 upright. Reference numeral 3 denotes a horizontal hole provided on one side of the upper end of the stand pipes 2, 2, and the length of this horizontal hole is within a range of 90 degrees with respect to the leg pipes 1, 1. On the other side facing the horizontal hole 3, there is a long hole 6 having large diameter openings 4, 4 with tapered peripheral surfaces 5, 5 at both left and right ends.
will be established. One side of one large-diameter opening 4 of this elongated hole 6 and one end side of one of the opposing horizontal holes 3 are located in the same position, and the other large-diameter opening 4 of the elongated hole 6 is located at the same position. and the other one end side of the horizontal hole 3 are in the same position. In other words, in the elongated hole 6, one large-diameter opening 4 is provided on a side surface perpendicular to the leg pipes 1, 1, and a portion of the other large-diameter opening 4 is provided on the side surface perpendicular to the leg pipes 1, 1.
It is provided in a position parallel to 1. Reference numeral 7 denotes a spiral rod having a spiral portion 8 at its tip, and a large-diameter convex portion 9 and a collar portion 10 on the outside thereof are formed at the other end of the screw rod.
A tapered portion 11 is formed around the tip of the large diameter convex portion 9. This tapered portion 11 comes to engage with the long hole 6 and the tapered surface 5 of the other large diameter opening 4. The spiral rod 7 is inserted from the large diameter opening 4 side perpendicular to the leg pipes 1, 1, and is suspended and fitted into the horizontal hole 3 located in a relative position, and the ammunition 12 is interposed at the outer end thereof. Then tighten with screw 13. Reference numerals 14, 14 are branch pipes that are inserted into the outside of the stand pipes 2, 2, and a connecting pipe 15 is connected between the lower ends of the left and right branch pipes. Further, at the lower end portions of the branch pipes 14, 14 into which the stand pipes 2, 2 are inserted, on the side surface in the same direction as the connecting pipe 15,
A small opening 16 into which the tip of the screw rod 7 is inserted, and a large diameter convex portion 9 of the screw rod 7 on the opposite side of the small hole.
A main opening 17 into which the opening is fitted is provided.

Reference numerals 18, 18 are through holes provided on the side surfaces of the upper ends of the branch pipes 14, 14, and the frame plates 19,
19 is fixed to the branch pipes 14, 14. This frame board 19
A guide tube 20, 20 is provided at one end of the frame plate, opening into the frame plate and protruding horizontally. This guide tube 20,2
An operating shaft whose base end is fixed to the inside of an external triangular lever 21 is inserted into the inside of the lever 21, and the end surface of the raised portion formed at the tip of this operating shaft is an inclined surface. The direction of this inclined surface is set so that the triangular lever 21 faces upward, downward, and sideways as necessary.
It is determined by rotating the . One corner of the triangular lever 21 becomes a direction indicating part 21',
This directional support portion only needs to be provided at one location on the lever, and its shape is arbitrary. Said guide tube 2
A bullet is interposed around the operating shaft inside the 0. 2
Reference numerals 2 and 22 indicate altitude adjustment tubes that are inserted into the branch tubes 14 and 14, and there are a number of through holes 2 on the sides of the adjustment tubes.
3, 23, . . . are provided, and by selecting one of the through holes, the tip of the raised portion of the actuating shaft is engaged. During this engagement, the inclined surface of the raised portion faces in the opposite direction from the tip. Reference numeral 24 denotes a bar installed between the upper ends of the left and right altitude adjustment tubes 22, 22.

To use the hurdle of this invention, the bar 24
When raising the height to a predetermined height, first turn the direction indicating parts 21',
Rotate 1' directly upward. Then, the inclined surface of the raised end of the actuating shaft faces downward and the altitude adjustment tube 2
It engages with the through holes 23, 23 of 2, 22. Therefore,
If you try to pull the bar 24 upward, the corner of the through hole of the altitude adjustment tube comes into contact with the inclined surface and presses that part, so the operating shaft moves against the bullet and pushes the guide tube. Pushed inward. Therefore, the altitude adjustment tube can be pulled up to a predetermined height without encountering resistance, and when the user releases the bar, the altitude adjustment tube will be fixed at that height. At this time, the tip of the raised portion of the actuating shaft is engaged with another hole on the altitude adjustment tube, but the tip of the raised portion of the actuating shaft does not receive any pressure from above. Maintain a fixed state without making any slight movements.

To lower the height of the bar, first rotate the direction indicators on the left and right levers directly downward. Then, the inclined surface of the raised end of the actuating shaft faces upward and engages with the through hole of the altitude adjustment tube. Next, when the bar is pushed down by hand, the corner of the through hole of the altitude adjustment tube comes into contact with the inclined surface and presses that part, so the operating shaft is pushed down into the guide tube against the bullet. Ru. Therefore, the altitude adjustment tube moves downward without any resistance, so at an appropriate height, rotate the direction indicating parts of the left and right levers directly upwards and align the operating shaft with the through hole of the altitude adjustment tube. Insert the tip of the ridge. Then, the bar's own weight is transferred to the tip of the protrusion in the through hole through the height adjustment tube, and remains fixed without moving at all.

Also, when the hurdle is not in use, the altitude adjustment tube should be fixed without moving upward or downward, so the direction indicating parts of the left and right levers should be rotated in the horizontal direction. Then, since the inclined surface of the end of the raised portion of the actuating shaft is oriented laterally, the corner of the through hole of the altitude adjustment tube does not come into contact with the inclined surface of the raised portion of the actuating shaft from either the upper or lower direction. Therefore, the tip of the protruding portion remains in a fixed state in which it remains engaged with the through hole.

3.3 Effects of the invention Since the present invention is a hurdle consisting of the above-mentioned configuration, it is possible to easily rotate the stationary leg tube during use and when not in use by simply holding it and rotating it in the desired direction. This makes it possible to always quickly and smoothly handle stationary legs, which was a time-consuming task in the past, and has great practical effects.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the whole before assembly, Fig. 2 is a perspective view of the whole after assembly, Fig. 3 is a perspective view of main parts before assembly, and Fig. 4. is a front view of the section viewed from A in FIG. 3, FIG. 5 is a front view of the section viewed from B in FIG.
The figure is a plan sectional view of the main part during use, Fig. 8 is a longitudinal sectional view of the central part of the same as above, Fig. 9 is a plan sectional view of the main part during rotation, and Fig. 10 is a longitudinal sectional view of the central part of the same as above. , FIG. 11 is a plan sectional view of the main part when not in use, and FIG. 12 is a longitudinal sectional view of the central part of the same.

Claims (1)

[Scope of utility model registration request] A horizontal hole is provided on one side of the standpipe installed on the left and right leg pipes that are fixed on the ground, making a 90-degree angle to the leg pipe.
On the other side of the standpipe facing this horizontal hole, a long hole is provided with a large-diameter opening with a tapered peripheral surface at both left and right ends, and one end has a tapered peripheral surface, a large-diameter convex part, and a flange. Insert the screw rod equipped with the screw rod into the large opening provided in the branch pipe inserted into the standpipe, and insert the screw rod into the small opening provided in the branch pipe by suspending it from the long hole of the inner vertical pipe. A hurdle with a machine interposed and a screw at the other end.