JPS58500238A - Additional equipment for tennis net practice - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Additional device for tennis net practice The present invention is an additional device for tennis net practice, which is stretched horizontally between the side supports. The tennis net 1 is attached to the tennis net 1 which is stretched and held between the supports by the provided rope. , comprising vertical additional struts attached to the side struts of the tennis net; The additional struts project upwardly beyond the above struts, and at the tip of each additional strut there is an additional rod. This additional rope is stretched above the horizontal rope and At least one ball passage whose size and position can be adjusted arbitrarily above the snet. The present invention relates to an additional device for practice that forms a window.

For beginner tennis players, and even for top tennis players, there are certain Decide in advance where the ball will pass, and the ball will pass through that position and cross the net. It is often desired to hit the ball. In such cases, generally.

It is not enough to roughly determine the passing position above the net; It is necessary to mark the area.

According to U.S. Pat. No. 3,993,306, tennis net training of the type mentioned at the outset is provided. Additional devices are known.

In this device, an additional rope forms a through gap above the tennis net and 5. If necessary, it can be divided by vertical strips hanging from additional ropes. Create a ball passage gap that allows the ball to pass through. However, especially at high ball speeds If the ball passes through, does it pass through the gap formed or is there an additional load? If it is not possible to determine whether the vehicle has passed over the It is not possible to know with certainty the results of ・. Furthermore, with this known additional rope metering cannot form an asymmetrical ball jumping area above the tennis net. .

The object of the invention is to provide precisely set passages, including those of asymmetrical shape, above the net. When the gap can be formed in advance and the ball leaves the passing gap for.

A tennis net practice add-on that prevents the ball from passing over the net. It is about providing.

In order to achieve this objective, in the additional device according to the present invention, between the additional nets and/or ball passage windows and/or holes of various shapes and positions above the additional rope. To form a rope jumping area, add a small amount of additional rope (both 2 pieces).

Preferably, three or more additional nets are individually laid out like curtains, and both The additional rope attached to the side additional struts extends below the height of the rope, i.e. the strut. It is proposed that each side be individually height-adjustable so that it can be tilted. It is something that

By using such additional equipment, coaches can For this purpose, it is possible to create a predetermined ball passage gap above the net in advance. It is also possible to quickly adjust the size and position of this gap. be. When adjustment is required, place the additional net suspended from the additional rope in the appropriate position. 1. From the passing window preset by the coach The missed ball will be caught in the additional net, so you can be sure of the result.

By placing one end of the additional rope at a position lower than the tennis net, Adjustable tilt position creates an asymmetrical ball jumping area above the tennis net. can be formed. This allows you to, for example, divide the foreground side by an additional net. This area is shielded so that only balls with topspin can jump over it. On the other hand, on the bankhand side, the sliced ball cannot pass through as the height of the normal net. A more detailed description will appear from the accompanying drawings and the following description. be done.

The additional nets are hung side by side on the additional ropes by sliders or rings, and all When the additional net If is expanded, the combined width is approximately equal to the width of the tennis net, and each Each additional net has a height and length at least equal to the height of the tennis net. It has the advantage of being In such a configuration, - the pole passing window should be provided only on the side. In that case, one additional net can be completely pushed to one side. At the same time, other additional nets are continuously expanded to completely shield a predetermined area. With The length of the net should be at least twice the height of the normal net. In order to do this, the net must be longer than the normal height.

In another preferred embodiment of the invention, the lower end of the additional net is provided with a hook; This allows the additional net to be pulled downward and hooked onto the tennis net. . Furthermore, there are borders on both left and right ends of the additional net. One hook is arranged at the lower end of each handle, forming the border of the passage window. The edge of the additional net is tension-fixed by this hook, and is secured by the above-mentioned edging. The passage window can be clearly identified.

At this time, if necessary, the color of this border may be contrasted with the color of the auxiliary net.

In a further preferred embodiment of the invention, the additional rope is formed in the form of a flat strip. In particular, if the additional rope is strung at a steep slope, By making it into a band shape, the ring that suspends the additional net will not fall off. It has the advantage of being The additional rope is tensioned between the additional supports by a tensioning device. It may also be an inelastic belt-like rope that is passed. Furthermore, another implementation of the present invention In order to use the double hook utilized in the example, an additional load (in the form of a strip) is required. The strip may be elastic. This double hook adds flattened rope Engage the additional rope on one side and attach it on the other side to hold it in the shape of Engage with a portion of a tennis net or rope. You can use this double hook Therefore, the top of the tennis net is at the height of a normal net in the center, but on both sides. Since it is possible to form a higher jumping area with the additional net, A ball heading towards the side cannot go over the net unless topspin is applied. (naru)

This additional net has a finer mesh than a regular tennis net (and allows better light to pass through, making it more visible). The player is placed above the tennis net. It has the advantage of being a net that can clearly identify the area occluded by the additional net. It is something that

Further preferred embodiments of the invention are characterized in the dependent claims.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

FIG. 1 is a diagram of a tennis net using an additional device according to the present invention; Figure 2 shows the line 111IK? in Figure 1. Six cross-sectional views, Figure 3 is taken along line l-1 in Figure 1. 11, FIG. 4 is a partial sectional view of another embodiment of the structure of the additional strut, FIG. Figure 5 is a sectional view taken along line ■-■ in Figure 4.

6 to 9 are schematic representations of examples of various adjustment positions of the additional device according to the invention; FIG. .

A normal tennis net 1 is suspended from a rope 3 stretched between two side supports 20. It is spread out. A vertical additional support 5 is fixed to the above support 2 via a mounting bracket 4. A holding frame 6 is disposed on the additional support column 5 so that its height can be freely adjusted. It is formed in the shape of a shell surrounding the supporting post 5 and carries a ring 7 at its upper end.

The additional rope 8 is tightly attached to the ring 7 and stretched approximately parallel to the rope 3. Retention The frame 6 is fixed to the additional column 5 by, for example, fixing screws 9 so that the height can be adjusted by -2. . An additional net with a fine mesh is suspended from the additional rope 8 through the ring 12.13. ) 10 and 11 are horizontally slidable, and these additional nets) 10.11 have a husband. Depending on the position of these nets, there are Thus, a window 16 can be formed through which the ball passes. Additional Nets) 10 ．． Hooks 17 and 18 are provided on the lower edge of net 1, and these hooks are connected to net 1. The additional net can be pulled downward by hooking it.

The holding frame 6 surrounds the additional column 5 so that it can be pushed down completely below the mounting bracket 4. This allows an additional rope of 8f! : Low on one or both sides of the net 10. move it to a position lower than the height of net 3, that is, lower than the top of net 1. be able to.

An improved structure for easily adjusting the height of the additional rope 8 is shown in Figures 4 and 4. This is shown in Figure 5. In this, the additional strut 25 is shaped to have a rectangular hollow cross section. Done.

It is quite long and therefore consists of two parts 21 and 23, each about 1.5 m long. Ru. These two parts are connected to each other via a plug socket 22. to this 5. The additional device according to the present invention can be used in various tennis nets for various tennis courts. When doing so, the additional struts can be easily transported and moved. The additional support 25 holds It is inserted into the insertion hole 27 of the clamp 24 from above and is inserted into the use position.

These holding clamps 2 and 4 are fixed to the supports 2 of the net 1 at intervals vertically. . The additional support 25 is provided with a roller 28 that surrounds the additional support 25. A guide clamp 26 attached to the pillar 25 is provided so as to be height adjustable. This guide The lamp 26 carries a hole-opening fitting 29 for tightly attaching the (band-shaped) additional rope 8. hold The height of the guide clamp 26 on the additional column 25 can be adjusted using the upper guide roller 31. This is done by a circulating rope 30 disposed via a lower guide roller 32 and a lower guide roller 32.

The upper guide roller 31 is attached to the flange 33 at the upper end of the 5-additional column 25, and The guide roller 32 is attached to a flange 34 provided on the upper retaining clamp 24. It will be done. The circulation rope 30 has terminal rings 35 and 36 at both ends thereof. ．． 36 are both removably engaged with the guide clamp 2E1 via a holding pin 37. . As a result, the height of the guide clamp 26, that is, the height of the additional rope 8, is reduced by the circulation rope. Any position on each additional column 25 can be achieved by appropriately setting the position of the loop 30. can be adjusted to To fix this height adjusted position, use the flange. At 34, rope lamp devices 3 and 8 are provided. This rope clamp device 38 The rope clamp device 3 is rotated by a nondle 39 provided on the flange 34. The rotating rope 30 is pressed and fixed against the guide roller 32 by the protrusion 40 provided at the rotating rope 30. Set.

The upper holding clamp 24 is fixed at a high position on the support column 2 of the IT 1, If you want to move the additional rope 8 to a position sufficiently lower than the rope 3 for net 1, please guide it. If the clamp 26 cannot be lowered sufficiently below the additional column 25, The inner clamp 26 may be moved between the holding clamps 240. In this case, the circulation Remove the end ring 35 of the rope 30 from the retaining pin 37 of the guide clamp 26 and attach it to the additional support. Pull out the column 25 upward from the insertion hole 27, move the guide clamp 26 downward, and attach it. Remove the additional support post 25 and insert the additional support post 25 into the insertion hole 2 of the upper holding clamp 24 again. 7 and place the guide clamp 26 below the retaining clamp 24 above the additional column 25. and finally insert the additional support 25 into the insertion hole 27 of the lower holding clamp 24. It's crowded. The guide clamp 26 is thus located between the two retaining clamps 240, By locking the end ring 36 of the circulation rope 30 to this guide clamp 26, the circulation The guide clamp 26 can be adjusted to a desired height by the ring rope 30. Ru.

6 to 9 schematically show examples of different adjustment positions of the additional device according to the invention. are doing. In the figures, parts explained in relation to Figures 1 to 5 are designated by the same reference numerals. These parts will not be particularly explained.

The structure for adjusting the height of the additional rope 8 on the additional support 5 will not be particularly explained. . Guide clamp 26 and holding clamp having the structure shown in FIGS. 4 and 5 Only 24 are shown schematically. Figure 6 shows - As an example, four additional nets 4 1, 42, 43, and 44, and these additional nets are not particularly shown. It is hung on the additional rope 8 by rings corresponding to rings 12 and 13 in Figure 1. It is. The border 1415 of the net shown in FIG. 1 is the same as that of the additional net shown in FIG. Not specifically shown.

The hook 45 used to tension the additional nets 41, 42, 43, and 44 is , only a part of which is shown on both sides of the lower end of the additional net. In Figures 7 to 9 , additional nets are not shown in detail. An additional net is a combination of multiple additional nets, For example, as one net surface consisting of 10 and 11 or 41, 42, 43 and 44. , it is like closing a curtain.

In the arrangement of FIG. 6, three ball passing windows 46, 4 having different contour shapes are provided. 7.48 is formed.

If a right-handed tennis player stands facing net 1, the forehand side Since the height of the ball passing window 48 is very limited, the direction must be accurate and the net The ball must be hit flat and close to the edge of the ball. On the other hand, since the ball passing window 46 on the backhand side is wide, However, in theory, the ball will fly exactly in the direction of gap 46. I have to go. By lowering the position of the additional rope 8 on the Fuoano-do side, You can also hit a dog spin ball that exceeds the additional rope 8 on the forehand side. .

In the arrangement shown in Figure 7, the topspin ball is spread across the entire width of the net. You can practice hitting.

The ball has to fly high enough above the rim of the net.

additional netsu) k cannot be exceeded.

In the arrangement shown in FIG. 8, the ball jumping area 49 is asymmetrical. Ba On the Tsukuno/Ndo side, you can hit a flat ball that just touches the edge of the net. However, on the forehand side, unless you hit a topspin ball, it will go over the net. I can't.

In the arrangement shown in Fig. 9, as a further modified example, a substantially flat ■-shaped board is used. A le jumping region 50 is shown. Furthermore, a double hook 51 is provided.

Pull down the additional rope 8 to the desired position and hook it to the net 1 with the double hook 51. Let's go. In this way, the center of the ball jumping area 50 is at the same height as the normal net. The net becomes higher (becomes higher) as it approaches both ends. Only spin balls go over the net, and all balls that have never had top spin It gets caught in the additional net.

Claims (1)

[Claims] 1. A rope 3 stretched horizontally between the side supports 20 is used to maintain the tension between the supports. It is added to the tennis net 1 held and attached to the above-mentioned side supports 2 of the tennis net 1. Provided for the vertical additional struts 5.25 to be attached, which additional struts extend upwardly beyond said struts 2. The tip of each additional support strut protrudes toward the direction and carries an additional rope 8. is stretched above the horizontal rope 3, and is sized and stretched above the tennis net. Practice such as forming at least one ball passing window whose position can be adjusted arbitrarily An additional device for use, The additional rope 8 has at least two, preferably three or more additional ropes) 10 , 11; 41 to 44 are individually arranged like curtains (movably extended and supported by the additional supports). The additional ropes 8 on the pillars 5, 25 are each attached separately on both sides, i.e. on top of the ropes 3. The height can be freely adjusted to a position lower than the height of the column 2, and it is possible to take an inclined position. 10, 11; between 41 and 44 and/or the above additional rope 8 Above the ball passing window 16; 46-48 and/or the ball jumping area are provided. A practice addition to a tennis net, characterized in that it is formed with the shape and position of Device. 2. Said additional net) 10, 11; 41 to 44 are sliders or rings 12.13 are hung side by side on the additional ropes 8 through the And. Its width is approximately equal to the width of said tennis net, and each said additional net has a The tennis net also has a height and length equal to the height of the tennis net. Additional training equipment as described in scope 1. is provided with hooks 17, 18, which pull the additional net downwardly to Claim 1, characterized in that it can be hung on the varnish net 1, or Additional device for practice according to paragraph 2. 4. The vertical edge of the additional net 10, 110 has a border 14°15, with a small ( In both cases, hooks 17 and 18 are attached to the lower edge of the border. Additional equipment as set forth in item 3 of the scope of demand. 5. The additional nets 10, 11; 41 to 44 are different from the normal tennis net 1. The claimed invention is characterized in that the mesh is fine and allows light to pass through. Any one of the ranges 1 to 4 is the additional training device according to item 1. 6. Claim 1, wherein the additional rope 8 is formed into a flat band shape. Any one of items 6 to 6 is the additional training device according to item 1. 7. One side engages the additional rope 8 and the other side engages the tennis net 1 or is provided with a double hook 51 that engages a portion of the rope 3, whereby the attachment The claim is characterized in that the support rope 8 is held in a flat, square shape. Additional training equipment as described in scope 1. 8. The additional support column is formed to be freely divisible, easy to transport, and fixable, and The additional rope 8 is connected to the upper end of the upper divided part of each additional support. An additional device for training according to claim 1. 9. The additional support 5 is provided with a shell-shaped holding frame 6 that surrounds the additional support 5. The additional rope 8 is connected to the holding frame 6, and the holding frame 6 is connected to the additional support column 6. Claim 1, characterized in that the device is movable up and down on the 5 and can be fixed. Additional equipment for practice as described. 10. The support clamp 2 of the tennis net 1 has an insertion hole 27. 4 is fixed, additional struts 25 are inserted into the insertion holes, and each additional strut 25 has a One guide clamp 26 is attached to the guide clamp 26 in a height-adjustable manner. is attached to the additional support column 25 via the roller 28, and is attached to the K (band-shaped) additional roller. Through the hole fittings 29 for connecting the pulleys 8 and the upper and lower guide rollers 31, 32'' The end rings 35 and 36 of the circulation rope 30 are arranged parallel to the additional support 25. Exercise according to claim 1, characterized in that it has a fixed bin 37 for Additional equipment for use. 11. The upper guide roller 31 is connected to a flange 3 provided at the upper end of the additional support column 25. 3, and the lower guide roller 3'2 is located inside the holding clamp 24. The training attachment according to claim 16, characterized in that the training attachment is disposed in one of the Processing equipment. 12. One of the upper and lower guide rollers 31, 32, preferably the lower guide roller. A rope clamping device 38 is provided nearby, and the rope clamping device 38 By fixing the rope 30 in any circulating position, the additional rope (in the form of a band) 8(!-Characterized by fixing the supporting guide clamp 26 at a predetermined height position. An additional device for practice according to claims 10 and 11.