JP3220701B2 - Athletics lifting bar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an up-and-down obstacle bar for athletics, which is installed in an obstacle pond (water moat) or the like of an athletics stadium.

[0002]

2. Description of the Related Art In obstacle competition in an athletic stadium, the height and position of obstacle bars installed in obstacle ponds (water moats) are limited.
The rules are different for boys and girls. Conventional obstacle bars are available for men and women,
The pillar part was attached to and detached from the concrete wall surface of the obstacle pond via bolts or the like, and was appropriately replaced.

[0003]

If separate obstacle bars are used for men and women as in the prior art, replacement work is complicated, and a large space for storing the removed obstacle bars is required. And other problems.

The present invention has been made in view of such a conventional problem,
It is intended to provide an athletics lifting obstacle bar that can be used in both men's and women's disability competitions.

[0005]

SUMMARY OF THE INVENTION The features of the present invention for solving the conventional problems as described above and achieving the intended purpose are as follows.
A plurality of support members movably mounted in the front and rear directions, and a horizontally long bar body supported on the support portions, and having a fixed member and a vertically moving member which are relatively moved vertically by the rotation of the horizontal rotation input shaft. The screw jack or the rack jack is fixed to the support member with the fixing member, the elevating member is fixed to the bar body, and the bar body is supported on the support part so that the height can be adjusted. And a horizontally long rotary connecting shaft is provided so as to connect the rotary input shafts of the screw jacks or rack jacks to each other and to raise and lower the respective lifting members in a synchronized manner. .

It is preferable that the support portion is formed in a horizontally long girder shape that straddles the obstacle pond . In addition, a plurality of vertically elongated hollow columns are provided above the support portion or below the bar body,
It is preferable that a hollow horizontally long connecting portion is provided between the support portions, a screw jack or a rack jack is stored inside the support portion, and the rotary connection shaft is stored inside the connection portion.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 and 2, an obstacle pond 100 (water moat) of an athletics stadium has a predetermined width on the left and right sides, and concrete walls on the left and right sides of the obstacle pond 100. Part 1
On both outer sides of the guide grooves 01 and 101, there are provided guide grooves 109, 109 made of concrete that are long before and after opening upward, and as shown in FIG.
A rail 109a made of a channel steel which is long in front and rear is fixed so as to open laterally.

As shown in FIGS. 1 and 2, the bar body 1 is made of wood and is formed to be long on the left and right.
3, lower support portions 5, 5, 5, connecting portions 6, 6, supporting portions 7,
The installation parts 9 and 9 are made of stainless steel and are assembled in a frame shape, and these constitute a lifting obstruction bar.

The support portion 7 is formed in a long girder shape extending right and left so as to straddle the obstacle pond 100. At both ends of the support portion 7, as shown in FIGS. 9,
9 are fixed, and wheels 9a, 9a,... Made of synthetic resin are rotatably mounted on the outer surfaces of the installation portions 9, 9. Then, as shown in FIG.
are inserted inside the rails 109a, 109a, and can be moved back and forth along the guide grooves 109, 109 (obstacle pond 100) in a manner that the movement in the vertical direction is restricted.

As shown in FIG. 1, lower pillars 5, 5, 5 formed in a vertically long hollow cylindrical shape are opened at the upper end of the center of the support portion 7 and above the both end portions. At the center of the bar body 1 and at the lower side of both ends, upper columns 3, 3, 3 formed in a vertically long hollow cylindrical shape are fixed with their lower ends opened. The lower support portions 5, 5 and 5 are slidably fitted up and down, respectively, so that the inside of the upper support portion 3 and the inside of the lower support portion 5 communicate with each other.

[0011] Further, connecting portions 6, 6 formed in a hollow cylindrical shape that is long in the left and right direction are provided between upper end portions of the lower supporting portions 5, 5, 5.
Has been fixed. The left and right ends of the connecting portion 6 are opened, and through holes are provided on the side surfaces of the lower support portion 5 so as to match the ends of the connecting portion 6. 6 communicates with the inside. In addition, upper support 3
In order to prevent interference with the connecting portion 6 or the operation handle 19 at the time of elevating and lowering, as shown in FIG.

[0012] Then, as shown in FIG.
Inside, screw jacks are stored, respectively.
The screw jack includes a main body 11 (fixing member) having a horizontal rotation input shaft exposed to the left and right, and a vertically long screw shaft 12 (elevating member) projecting vertically from the main body 11.
When the one rotation input shaft is rotated, the main body 11 and the screw shaft 12 move relatively up and down via a worm gear or the like in the main body 11. And the main body 11
Fixed to the upper end of the lower support 5 (with respect to the support 7),
The screw shaft 12 is fixed to the lower side of the bar main body 1.

Further, the main body 11, 11, 1 of the screw jack is provided.
The rotation input shaft 1 is a rotary connection shaft 1 that is formed long in the left and right directions.
The rotating connection shafts 15 are connected to each other via the connecting members 5 and 15, and are stored inside the connecting portion 6. An operation handle 19 is mounted on the rotation input shaft of the main body 11 of the screw jack at one end so as to protrude outside the columns 3 and 5.

The athletics elevating obstruction bar constructed as described above, when the whole is pushed back and forth, the wheels 9 of the installation sections 9 and 9 are moved.
Since the a and 9a roll and smoothly move back and forth, the bar main body 1 can be suitably moved to a predetermined installation position. When the rotation input shaft of the main body 11 of the screw jack is rotated via the operation handle 19, the rotation connection shaft 1 is rotated.
All screw jack bodies 11, 1 through 5, 15
The rotation input shafts 1 and 11 rotate simultaneously by the same amount, and the screw shafts 12, 12 and 12 of all the screw jacks move up and down by the same amount at the same time. It can be raised and lowered suitably to the height.

Therefore, the height and the installation position of the bar body 9 are
It can be easily adjusted to a predetermined height and installation position so as to conform to the different regulations of the men's disability competition and the women's disability competition, eliminating the need for a replacement work like a conventional obstacle bar.

Further, the screw jack body 11, the screw shaft 1
2. The rotating connection shaft 15 is stored inside the support portions 3, 5 and the connection portion 6, and the wheel 9a is inserted inside the rail 109a so that the movable portion is not exposed to the outside. At the same time, the safety at the time of movement can be improved, and the screw jack and the rotary connection shaft 15 can be prevented from being stained.

In the above-described embodiment, the screw jack body 11 is used as a fixing member, and the screw shaft 1 of the screw jack is used.
Although the case where 2 is a lifting member has been described, the screw shaft 12 of the screw jack may be fixed to the supporting portion as a fixing member, and the body of the screw jack may be fixed to the bar body as a lifting member.

[0018]

As described above, in the athletics elevating obstacle bar according to the present invention, the support portion is installed so as to be movable back and forth ,
Between the support part and the horizontally long bar body supported on it,
A plurality of screw jacks or rack jacks having a fixed member and a vertically moving member that relatively move in the vertical direction by rotation of the horizontal rotation input shaft, the fixed member is fixed to the support portion,
The elevating member is fixed to the bar body so that the bar body is supported on the support part so that the height can be adjusted. The horizontal rotation connection shaft is connected to the rotation input shaft of each screw jack or rack jack. The height of the bar body and the installation position can be changed to the height of the bar body, the height of the bar, the height of the bar, the height of the bar, and the height of the bar. Can be easily adjusted, and a complicated replacement work like a conventional obstacle bar is not required.

Further, by forming the support portion in a horizontally long girder shape over the obstacle pond , a plurality of screw jacks or rack jacks can be suitably arranged between the support portion and the bar body.

A plurality of hollow vertical columns are provided above the support portion or below the bar body, a hollow horizontal connecting portion is provided between the columns, and a screw jack or a rack jack is stored inside the column. By storing the rotary connecting shaft inside the connecting portion, it is possible to improve the safety at the time of the elevating operation and prevent the screw jack or the rack jack, the rotary connecting shaft, and the like from being soiled.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of an athletics elevating obstacle bar according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged side view of FIG. 1;

FIG. 4 is a partially enlarged view of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bar main body 3 Upper support part 5 Lower support part 6 Connecting part 7 Support part 9 Installation part 9a Wheel 11 Main body (screw jack, fixed member) 12 Screw shaft (screw jack, elevating member) 15 Rotation connection shaft 19 Operation handle 100 Obstacle pond 101 Side wall 109 Guide groove 109a Rail

────────────────────────────────────────────────── (5) References JP-A-8-299615 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A63K 3/04

Claims (3)

(57) [Claims] 1. A support portion movably installed in a back and forth direction,
A plurality of screw jacks or rack jacks having a horizontally elongated bar main body supported on the support portion, and having a fixed member and a vertically moving member that relatively move vertically in accordance with the rotation of the horizontal rotation input shaft; Fixed to the support portion, the lifting member is fixed to the bar body,
The bar main body is provided so as to be height-adjustable on the support portion, and a horizontally long rotary connecting shaft connects the rotary input shafts of the screw jacks or rack jacks to each other, and the vertical An athletics elevating obstruction bar provided to raise and lower members in synchronization. 2. The up-and-down obstruction bar for athletics according to claim 1, wherein the support portion is formed in a horizontally long girder shape over the obstruction pond . 3. A plurality of hollow vertical columns are provided above the support portion or below the bar main body, and a hollow horizontal connecting portion is provided between the columns, and the screw jack or the rack jack comprises: The lifting bar for athletics according to claim 1, wherein the rotating connection shaft is stored inside the support portion, and the rotating connection shaft is stored inside the connection portion.