JP3108910U - Net pulling equipment for ball games - Google Patents

Abstract

An object of the present invention is to provide a ball game net tensioning instrument which can obtain a sufficient net tension and which does not require a device for increasing tension on a pole.
SOLUTION: A rope fixing portion 2, a connecting member 3 for connecting the rope fixing portion and the tension instrument body 16, a holding member for holding the connecting member fixed to the two plate members 5, and the two plate members. And a rope tensioning instrument body consisting of a cylindrical member 6 between the two plate-like members and having both ends fixed to the two plate-like members, a pole engaging portion 7P at one end, and the other end The adjuster member is formed between a cylindrical member and an adjuster member 7 formed of a flexible long body that has a grip portion and passes between two plate-like members and is stretched over the holding portion side of the cylindrical member. A stopper 8 that is pivotally supported by the tensioning instrument main body so that the adjuster sandwiches the adjuster member from the gripping part side, and a stopper in a direction to press the sandwiching part against the cylindrical member. Characterized by comprising a biasing member That.
[Selection] Figure 2

Description

  The present invention relates to an apparatus for pulling a net to stretch a net for ball games between two poles.

  In ball games, such as volleyball, badminton, soft volleyball, and Indiana, which are held across the net, a competition is held with a net placed between two poles on the floor. Gymnasiums and other venues are designed for multiple purposes and do not always have an internet connection dedicated to certain types of competitions. Even in a dedicated stadium, if the net is always stretched, the wire or string passed through the top of the net will stretch and loosen. Therefore, it is necessary to set up a net every time you play. For example, in a net with high tension such as tennis or volleyball, a device that combines a drum wound with a wire and a crank that rotates the drum or a gear is used in order to obtain a tensile force for stretching the net. On the other hand, in table tennis and badminton, the distance between the two poles is narrow, the ball or shuttlecock used in the competition is light, and the net tension does not require a large force, so a device that increases the force to stretch the net is required. do not do.

  In contrast, soft volleyball requires a certain amount of net tension, but the pole spacing is not as large as volleyball and tennis and does not require that much tension, so the pole is not equipped with a device that increases the net tension. However, in soft volleyball, the ball that hit the net needs to rebound moderately, and women and children who are weak have insufficient power to stretch the net, and it was necessary to borrow the power of men to compete .

  In conventional soft volleyball equipment, there is no device for increasing the tension to stretch the net, and only a weak person cannot stretch the net with sufficient tension. Also, for example, if the pole is provided with a device for increasing tension, such as volleyball, the pole itself becomes heavier, which is inconvenient when playing with only weak people.

  An object of the present invention is to provide a ball game net tensioning instrument that can obtain a sufficient net tension and that does not require a device for increasing tension on a pole.

The ball pulling device for ball game of the present invention is a device for pulling a rope that stretches the net between two poles standing on the floor,
(A) a rope fixing part to which one end of the rope is fixed;
(B) a connecting member for connecting the rope fixing portion and the tension instrument body;
(C) two plate-like members,
A holding portion that is fixed to the two plate-like members and holds the connection member; and a cylindrical member that is between the two plate-like members and whose both ends are fixed to the two plate-like members, respectively. A rope tensioning instrument body,
(D) A pole engaging portion that engages with the pole is formed at one end;
A grip that can be gripped and pulled by a person at the other end
An adjuster member made of a flexible long body that passes between the two plate-like members and spans the holding portion side of the cylindrical member;
(E) having a sandwiching part that sandwiches the adjuster member with the cylindrical member;
A stopper pivotally supported by the tension instrument body so that the pinching portion pinches the adjuster member from the grip portion side;
(F) It is characterized by comprising a biasing member that biases the stopper so as to press the sandwiching portion of the stopper against the cylindrical member.

In addition, the ball game net tensioning device of the present invention is a device for pulling a rope that stretches a ball game net between two poles standing on the floor surface,
(A) two plate-like members,
A rope fixing portion fixed to the two plate-like members and one end of the rope is fixed, and between the two plate-like members, both ends of each of the two plate-like members A rope tensioner body composed of a cylindrical member fixed to
(B) a pole engaging portion that engages with the pole is formed at one end;
A grip that can be gripped and pulled by a person at the other end
An adjuster member made of a flexible long body that passes between the two plate-like members and is stretched over the holding portion side of the cylindrical member;
(C) having a sandwiching part that sandwiches the adjuster member with the cylindrical member;
(D) a stopper pivotally supported by the tension instrument body so that the pinching portion pinches the adjuster member from the grip portion side;
(E) It is characterized by comprising a biasing member that biases the stopper so as to press the sandwiching portion of the stopper against the cylindrical member.

  In the ball game net tensioning device of the present invention, the adjuster member is preferably a belt.

  The ball game net tensioning device of the present invention is particularly characterized in that it is used for a soft volleyball net, a badminton net or an Indiana net.

  Since the ball pulling device for ball game of the present invention reduces the force of pulling the net to about 1/2, even a weak person can stretch the ball game net with necessary tension. Further, since a device for increasing the net pulling force attached to the pole is not required, the pole does not become heavy and the handling is simple, and the conventional pole can be used as it is.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a front view showing a state in which a soft volleyball net is stretched using a ball game net tension device 1 (hereinafter referred to as a net tension device) according to an embodiment of the present invention. FIG. 2 is a perspective view showing the entire net tension device 1 according to an embodiment of the present invention. FIG. 3 is a perspective view of the main part of the net tension device 1 shown in FIG. 2 as viewed from the front side. FIG. 4 is a perspective view of the main part of the net tension device 1 shown in FIG. 2 as seen from the back side.

  As shown in FIG. 1, a ball game net N is stretched between two poles P standing on a floor surface (not shown). A rope R is passed through the cylindrical portion of the upper part of the ball game net N, the rope R is connected to the upper end of the pole, one end of the rope R is connected to the hook Ph of the pole P, and the other end is connected to the net of the present invention. The ball game net N is stretched by pulling with the pull device 1. A side rope S on the side of the ball game net N is tied to the pole P so that the entire ball game net N does not loosen.

  Next, the structure of the net tension device 1 according to an embodiment of the present invention will be described with reference to FIGS.

  The rope fixing part 2 to which one end of the rope P is fixed is folded back through a belt which is a connection member 3 to a D-shaped annular member, and the end of the folded belt is sewn in the middle of the belt and fixed to the connection member 3. Has been. The other end of the connecting member 3 is fixed to the holding portion 4 formed on the net pulling instrument main body 1b by folding back and sewing the end of the belt in the same manner as the rope fixing portion 2.

  The net tension device main body 1b is located between two plate-like members 5, a holding portion 4 fixed to the two plate-like members 5, and the two plate-like members 5, and both end portions are the two. The cylindrical member 6 is fixed to each of the plate-like members 5.

  An adjuster member 7 having a pole engaging portion 7p that engages with the pole in the same manner as the rope fixing portion 2 passes between the two plate-like members 5 of the net tensioning instrument body 1b. The cylindrical member 6 is suspended on the holding part 4 side. In the present embodiment, a flexible belt is used as the adjuster member 7. At the end where the pole engaging portion 7p of the adjuster member 7 is not formed, the end of the folded belt is stitched to the middle of the belt to form an annular grip portion 7g so that it can be easily gripped.

  A stopper 8 is supported on the net tension instrument body 1b so as to be swingable on a shaft 8a fixed to the two plate-like members 5. The stopper 8 has a sandwiching portion 8b that sandwiches the adjuster member 7 with the cylindrical member 6, and swings on the net tensioning instrument main body 1b so that the sandwiching portion 8b sandwiches the adjuster member 7 from the gripping portion 7g side. It is supported freely. A biasing member 9 that biases the stopper 8 is provided so as to press the sandwiching portion 8b of the stopper 8 against the cylindrical member 6 (see FIG. 4). In the present embodiment, a torsion coil spring is attached to the shaft 8 a that supports the stopper 8 as the biasing member 9.

  Next, the operation of the net tension device 1 according to the embodiment of the present invention will be described. FIG. 5 is a cross-sectional view showing the operation of the net tension device 1 shown in FIG.

  The end of the rope R is tied to the rope fixing part 2 formed at one end of the net tension device 1. The pole engaging portion 7p formed at one end of the adjuster member 7 of the net tension device 1 is engaged with the hook Ph formed at the pole P, and the grip portion 7g formed at the other end of the adjuster member 7 is pulled. As a result, the rope R is pulled and the ball game net N is stretched.

  When the grip portion 7g formed at the other end of the adjuster member 7 is pulled, the belt slides on the outer periphery of the cylindrical member 6 of the net tensioning device 1, and the space between the cylindrical member 6 and the pole engaging portion 7p is shortened. The connecting member 3 fixed to the end of the cable is pulled, and the rope is pulled. And since the adjuster member 7 is pinched | interposed from the grip part 7g side of the adjuster member 7 between the pinching part 8b of the stopper 8 from the cylindrical member 6, the pinch part 8b is drawn in by the adjuster member 7 which is going to return, and adjuster The movement of the member 7 to return by the tension of the rope is stopped, and the net tension device 1 is fixed in a state where the rope is pulled. At this time, the tension of the rope balances with the resultant tension of the two tensions on the pole engaging portion 7p side and the gripping portion 7g side of the adjuster member 7. That is, the tension of the rope is decomposed in two directions on the pole engaging portion 7p side and the gripping portion 7g side of the adjuster member 7. That is, the cylindrical member 6 works like a moving pulley, and the force pulling the grip portion 7g of the adjuster member 7 is about ½ of the rope tension.

  As a result, the length of pulling the grip portion 7g of the adjuster member 7 is approximately twice the length of pulling the rope P. 2 so that even a weak person can pull the rope with the tension necessary to stretch the net N.

  In the present embodiment, the connection member 3 for connecting the net tension instrument body 1b and the rope fixing portion 2 is provided. However, the connection member 3 and the rope fixing portion 2 are omitted, and the holding portion 4 is used as the rope fixing portion 2. The rope P may be tied directly. In that case, the width of the holding part 4 is set to about the thickness of the rope P so that the direction of the net pulling instrument body 1b does not tilt with respect to the direction in which the rope P is pulled, or the rope is formed with a corner at the center of the holding member P should be fixed in the center.

  In the present embodiment, the cylindrical member 6 is fixed to the net tension instrument body 1b. However, the cylindrical member 6 may be supported so as to rotate only in the direction in which the adjuster member 7 is pulled toward the grip portion 7g. Good. For example, the cylindrical member 6 may be configured to rotate together with the adjuster member 7 when the adjuster member 7 is pulled toward the grip portion 7g using a ratchet mechanism or a one-way clutch. Even in this case, since the cylindrical member 6 does not rotate in the direction in which the adjuster member 7 is loosened, the adjuster member 7 is held between the stopper 8 and the cylindrical member 6 and the state where the rope P is pulled is held. By doing so, the sliding friction between the adjuster member 7 and the cylindrical member 6 is reduced to the rolling resistance of the cylindrical member 6, so the tensile force is reduced accordingly.

  Furthermore, in the present embodiment, a belt is used as the adjuster member 7, but the adjuster member 7 is not limited to a belt, and a rope, a chain, or the like may be used.

  In this embodiment, a soft volleyball net is assumed as a ball game net. However, the net pulling device 1 of the present invention is not limited to a soft volleyball net, but also a badminton net or an Indiana net. It can be applied in the same way.

It is a front view which shows the state which stretched the ball game net | network using the net tension device concerning embodiment of this invention. It is a perspective view showing the whole net tension instrument concerning an embodiment of the invention. It is a front side perspective view which shows the principal part of the net tension instrument shown in FIG. It is a back side perspective view which shows the principal part of the net tension instrument shown in FIG. It is sectional drawing of the net tension instrument shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Ball game net tension device 1b Net tension device main body 2 Rope fixing part 3 Connection member 4 Holding part 5 Plate-like member 6 Cylindrical member 7 Adjuster member 7p Pole engaging part 7g Grip part 8 Stopper 8a Shaft 8b Clamping part 9 Energizing member N net P pole Ph hook R rope S side rope

Claims (4)

An instrument for pulling a rope that stretches a ball game net between two poles standing on the floor,
(A) a rope fixing part to which one end of the rope is fixed;
(B) a connecting member for connecting the rope fixing portion and the tension instrument body;
(C) two plate-like members,
A holding portion that is fixed to the two plate-like members and holds the connection member; and a cylindrical member that is between the two plate-like members and whose both ends are fixed to the two plate-like members, respectively. A rope tensioning instrument body,
(D) A pole engaging portion that engages with the pole is formed at one end;
A grip that can be gripped and pulled by a person at the other end
An adjuster member made of a flexible long body that passes between the two plate-like members and is stretched over the holding portion side of the cylindrical member;
(E) having a sandwiching part that sandwiches the adjuster member with the cylindrical member;
A stopper pivotally supported by the tension instrument body so that the pinching portion pinches the adjuster member from the grip portion side;
(F) A ball game net tensioning instrument comprising an urging member that urges the stopper so as to press the sandwiching portion of the stopper against the cylindrical member. An instrument for pulling a rope that stretches a ball game net between two poles standing on the floor,
(A) two plate-like members,
A rope fixing portion fixed to the two plate-like members and one end of the rope is fixed, and between the two plate-like members, both ends of each of the two plate-like members A rope tensioner body composed of a cylindrical member fixed to
(B) a pole engaging portion that engages with the pole is formed at one end;
A grip that can be gripped and pulled by a person at the other end
An adjuster member made of a flexible long body that passes between the two plate-like members and spans the holding portion side of the cylindrical member;
(C) having a sandwiching part that sandwiches the adjuster member with the cylindrical member;
(D) a stopper pivotally supported by the tension instrument body so that the pinching portion pinches the adjuster member from the grip portion side;
(E) A ball game net tensioning device comprising an urging member that urges the stopper so as to press the sandwiching portion of the stopper against the cylindrical member. 3. The ball game net tensioning device according to claim 1, wherein the adjuster member is a belt. 3. The ball game net tensioning device according to claim 1, wherein the ball game net is a soft volleyball net, a badminton net, or an Indiana net.

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