JP2000202085A - Net for peventing fly-out of ball - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a net for preventing fly-out of a ball which can be easily stored at another storage place by removing it from a ball playing place, and also, can be easily extended again. SOLUTION: This net is equipped with a flexible net 4 which is extended along a border line, and can be wound, and supporting posts 2 which can be detachably inserted in a casing 3 disposed on the ground, and each supporting post 2 is equipped with a short cross bar 8 having an end section oriented to the inside and the outside of the border line, which is fixed to the upper end of the supporting post 2, a pair of pulleys 9 and 10 which are rotatably supported by the end sections at both sides of the cross bar, a tow rope 11, a thin and long bobbin 13 having a pair of winding pins 14 being confronted with each other in the diametrical direction with a rotating shaft 12 as the center, and an operation handle 15, which takes up the tow rope, and rotation inhibiting means 15, 17 which inhibit the rotation of the thin and long bobbin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball net for preventing a ball from jumping out of a predetermined area of a ball field, such as a baseball field, a soccer field, and a tennis court.

[0002]

2. Description of the Related Art Conventional ball nets of this type include a wire mesh net fixed to the ground, a movable wire mesh net, or a flexible curtain net for partitioning from an adjacent tennis court. is there.

[0003]

Regardless of whether it is a fixed type or a mobile type, such a ball-proof net is conventionally left in a ballpark. However, the ball net must be removed from the ball court on the order of the river manager for the multipurpose use of the ball court or when there is a risk of increasing the water at the ball court on the riverbed. In such a case, it is desirable to be easily removed and stored in another storage place.

Accordingly, it is an object of the present invention to provide a ball-proof net which is easily removed from a ball stadium and stored in another storage area, and which can be easily redeployed.

[0005]

In order to achieve this object, a ball-proof net according to the present invention comprises a foldable flexible net extending along a boundary line, and this net is hung at predetermined intervals. At least two detachable support posts, each of which can be removably inserted into a casing provided on the ground, each support post having an end pointing inward and outward of the perimeter. A short crossbar fixed to the upper end of the support post, a pair of pulleys rotatably supported at both ends of the crossbar, and a pair of pulleys wound around these pulleys and disposed inside the boundary of the support post. A tow rope connecting one end to the upper edge of the net, and a rotation shaft rotatably supported orthogonally to the support post on a side of the intermediate portion of the support post facing the boundary line outside. Wind tow rope An elongated bobbin having a pair of wrapping pins and an operation handle diametrically opposed to each other about the rotation axis, and rotation preventing means for preventing rotation of the elongated bobbin. It is characterized by.

According to the ball-proof net of the present invention, the support post is inserted into the ground casing as required, and the tow rope connected to the upper edge of the net is elongated through the pair of pulleys at the upper end of the support post. The stretched flexible net is then stretched between adjacent support posts by winding the web.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows a state in which a support post 2 of a ball-proof net 1 according to the present invention is inserted into a casing 3 buried in the ground G, and is wound inside a boundary line with respect to the support post 2 (left side in FIG. 1). FIG. 4 shows a state in which a tow rope 5 is connected to an upper edge of a folded flexible net 4 (shown diagrammatically). The net 4 is used alone or in combination to extend along the boundary of the predetermined area. To cover. As clearly shown in FIG. 5, a projection 7 that engages with a notch 6 formed in the casing 3 is provided at the lower end of the cylindrical support post 2,
The support post 2 and the casing 3 are prevented from rotating relative to each other. Alternatively, the lower end of the support post 2 and the casing 3 itself may have a rectangular cross-sectional shape to prevent relative rotation.

Each support post 2 has a short cross bar 8 fixed to the upper end of the support post and having ends directed toward the inside and outside of the boundary line, and rotatably supported at both ends of the cross bar. A pair of pulleys 9 and 10, at least one rope guide 11 for guiding the tow rope 5, and a rotatable crosswise orthogonal to the support post 2 on a side surface of the intermediate portion of the support post 2 facing the boundary line outside. An elongated bobbin 13 having a supported rotating shaft 12 is provided. The other end 5B of the tow rope 5 having one end 5A connected to the upper end of the net 4 arranged inside the boundary of the support post is wound around pulleys 9 and 10 and passed through a rope guide 11 to form an elongated bobbin. The elongate bobbin 13 is wound around the rotation axis 12 to be wound and released by being hooked on a hook 13A provided on the elongate bobbin 13.

The elongated bobbin 13 further includes a rotating shaft 12
A pair of wrapping pins 14 diametrically opposed to each other, a slender support plate 16 fixed to both ends of the wrapping pins 14 and attached to the rotating shaft 12, and an operation handle 15. In the illustrated embodiment, the wrapping pin 14 is a hollow pin, and the operating handle 15 is constituted by a handlebar fitted so as to protrude from one of the hollow pins (see FIG. 2).

As a rotation preventing means for preventing an unexpected rotation of the elongated bobbin 13, the supporting pin 2
Through hole 17 penetrating laterally at a position corresponding to position 4
When the handlebar 15 is pushed into the hollow wrapping pin 14 after the net 4 is stretched (see FIG. 3), the handlebar 15 fits into the through hole 17 and rotates the elongated bobbin 13. Try to block.

The holding means for holding the handlebar in both the protruding state and the pushing state includes, for example, a slide plate 19 having an elongated slot 18 as shown in FIG.
The handlebar 15 includes a notch 20 formed on the handlebar 15 to engage with an edge of the slide plate 19, and a head bolt 21 screwed to the elongated support plate 16 to fix the slide plate 19.

A handle 22 for attaching and detaching the support post is provided on a side surface of the support post, and a hook 23 for hooking a lower end of the expanded net 4 is provided.

[0014]

According to the ball-proof net of the present invention, when the ball-proof net is unnecessary, especially when receiving a removal order from the river manager when the water level is increased by using the riverbed, the traction roll wound on the slender bobbin. By releasing the rope, the ball-proof net can be removed from the support post and folded, the support post can be removed from the casing, and the net and post can be removed from the ball field and stored in a storage area. can do.

Furthermore, since the winch of the tow rope according to the present invention is constituted by an elongated bobbin which falls within the outline of the support post, it is compact and easy to store.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a state in which a ball-proof net according to a preferred embodiment of the present invention is inserted into a casing on the ground.

FIG. 2 is a partial side view showing a state in which a handle bar of a portion of an elongated bobbin of a support post of the ball-proof net of FIG. 1 takes a protruding position.

FIG. 3 is a partial side view of a state where a handlebar of an elongated bobbin portion of a support post of the ball-proof net of FIG. 1 is pushed in.

FIG. 4 is another partial side view showing a state where the handlebar of the elongated bobbin portion of the support post of the ball-proof net of FIG. 1 is held at a protruding position or a pushing position.

FIG. 5 is a partial explanatory view showing a relationship between a support post and a casing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ball-proof net 2 Support post 3 Casing 4 Net 5 Tow rope 5A, 5B Rope end 6 Notch 7 Projection 8 Crossbar 9,10 Pulley 11 Rope guide 12 Rotary shaft 13 Slender bobbin 13A Hook 14 Wrap pin 15 Operation handle (Handle bar) 16 Slender support plate 17 Through hole 18 Slot hole 19 Slide plate 20 Notch 21 Head bolt 22 Handle 23 Hook

Claims (4)

[Claims] A ball-proof net for preventing a ball from jumping out of a predetermined area of a ball field, a foldable flexible net extending along a boundary line, and this net is hung at predetermined intervals. And at least two support posts, each of which can be removably inserted into a casing provided on the ground, each support post having an end pointing inward and outward of the boundary. A short crossbar fixed to the upper end of the support post, a pair of pulleys rotatably supported at both ends of the crossbar, and the net wound around these pulleys and arranged inside the boundary of the support post. A tow rope connecting one end to the upper edge of the tow, and a rotating shaft rotatably supported orthogonally to the support post on a side of the intermediate portion of the support post facing the boundary line outside. Wind the rope A bobbin to be taken, comprising an elongated bobbin having a pair of wrapping pins and an operation handle diametrically opposed to each other about the rotation axis, and rotation preventing means for preventing rotation of the elongated bobbin. A ball-proof net. 2. An operation handle is constituted by a handlebar inserted so as to protrude from at least one of the pair of winding pins, and the handlebar is pushed into the hollow pin. When the rotation preventing means is constituted by being able to fit into a through hole which is laterally penetrated by the support post, a holding means for holding the handlebar in both the protruding state and the pushing state is provided. Item 2. The ball-proof net according to Item 1. 3. The ball-proof net according to claim 1, wherein the casing and the support post cannot be relatively rotated by a shape lock. 4. The ball-proof net according to claim 1, wherein a handle for attaching and detaching the support post is provided on a side surface of the support post.