JP2003175140A - Ball game practicing apparatus for pingpong, or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ball game practicing apparatus for pingpong, or the like which achieves not only excellent durability but also inexpensive production with a simple structure while accomplishing effective practicing capable of obtaining real touch of hitting balls along with virtual experiences of practicing for continuous shots and wide-angle shots. <P>SOLUTION: This ball game practicing apparatus for pingpong, or the like comprises a table 1, a post 6 mounted at least vertically movably on the table, an oscillation spring bar 9 which is mounted on the post with the tip thereof protruding by a specified length from the end face of the post, a support 14 which is mounted on the tip of the oscillation spring bar and has a mounting part of a ball fastening device 15 disposed on the end face thereof, the ball fastening device 15 made of a soft material on which a spherical fastening surface is mounted corresponding to a support surface of the mounting part and a hitting ball 8 fastened on the spherical surface of the ball fastening device. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ball-practice training device such as table tennis, and more particularly to a training device for cultivating form and hitting sensation.

[0002]

2. Description of the Related Art Conventionally, when practicing table tennis or the like, practicing a batting form with a racket has been the main practice. However, in practicing swing, since the ball is not hit directly, it is not possible to acquire the feeling of hitting the ball.In recent years, a support rod that swings by hitting is attached to the top of the stand whose height can be adjusted, and a ball is attached to this tip. By fixing the
A sports exerciser with improved practice efficiency has been proposed, and the application has been published as Japanese Utility Model No. 3-24169.

In this sport practice device, when practicing swinging while striking a ball, it is possible to get a real feeling in hitting sensation as well as the timing at which the ball hit by the opponent is continuously hit as well as the ball hitting practice. It has an effect.

However, when practicing batting in practice, particularly in the case of table tennis, the batting interval exceeds 60 to 70 times per minute, so the batting interval is not only very short,
Although it requires practice that the number of hits becomes very large, the configuration proposed so far has the drawback that the swing support rod sways after hitting and the hitting ball does not stop, or that it takes a long time to stop. In addition, there is nothing that can be practically used in terms of durability such that the impact ball is destroyed by frequent impacts and the rocking support portion is broken.

That is, 60 to 70 times per minute means hitting at a speed of once or more per second. If this is continued for 30 minutes, the ball will be hit 2000 times. In order to practice continuous hitting or to hit a stationary ball, it is necessary to stop the ball immediately after hitting. It was necessary for the practice device not to break down easily even with practice.

The present invention has been made by paying attention to the above points, and it is possible to obtain a realistic feel at impact and to practice effectively, and also to practice practically at continuous hits and wide-angle hits. It is to provide a table tennis practice device such as table tennis which is not only excellent in durability but also has a simple structure and can be manufactured at low cost.

[0007]

In order to solve the above-mentioned problems, the invention of a ball-practice practice apparatus such as table tennis according to claim 1 is
A base, a pillar attached so that it can move at least vertically with respect to the base, a swinging spring rod attached to the pillar and having its tip protruding a predetermined length from the end face of the pillar, and attached to the tip of the swinging spring rod. A support having an end face provided with an attachment portion for a ball fixture, a ball fixture made of a soft material attached with a spherical attachment surface corresponding to the support surface of the attachment part, and a spherical surface of the ball fixture. It is characterized in that it comprises a hitting ball fixed to the.

With this structure, since the ball fixing device is located on the back surface of the hitting ball, the user feels like hitting only the ball, and the interaction with the rocking spring rod provides a realistic hitting feeling. , You can practice comfortable hitting. Further, since the ball fixing device covers the hitting ball with a wide spherical surface and is made of a soft material, the impact absorbing power at the time of hitting the ball is large, and the service life of the hitting ball can be remarkably extended. .

According to a second aspect of the present invention, the rocking spring rod is formed of a leaf spring, and the plate surface of the leaf spring is oriented in the same direction as the support surface of the ball fixing tool of the support tool. By the shape and action of the leaf spring, the hit ball returns to a stationary state in an extremely short time, and since it does not take a long time until the ball hits a rest after hitting, a comfortable hitting practice can be performed.

The invention according to claim 3 is characterized in that the swing spring rod is formed by a bundle of a plurality of rod-shaped coil springs. With this configuration, due to the extension and pulling action of two or more coil springs arranged side by side, the time from rocking after striking to static stabilization, which was difficult with a single coil spring as in the past, is drastically reduced. In addition, it is possible to improve durability by stable rocking even with an angled impact.

According to a fourth aspect of the present invention, the support column and the rocking spring rod are overlapped over a predetermined length, and the upper end of the overlapped portion is connected and locked by an elastic expansion and contraction member, and the lower portion thereof is rocked. It is characterized in that the spring rod is fixed to the column, and due to the interaction between the swinging spring rod and the elastic stretchable body, it excels in hitting feeling,
The vibration absorbing force of the elastic elastic body reduces the displacement of the rocking spring rod at the time of hitting the ball so that it can quickly return to the original position and stop, and it also increases the impact load on the leaf spring when hitting the ball. It can be reduced, and it can maintain durability for a long time.

According to a fifth aspect of the present invention, the lower end fixing portion of the swinging spring rod to the column is connected to the elastic spring member fixed to the column so that the swinging rod can be moved by the impact force at the time of hitting the ball. With this configuration, even if the ball is hit at an angle such as wide-angle ball practice, the fixed part can move outward against the spring force and can follow the rotation. The durability can be improved in combination with the elasticity of the ball fixing device with respect to the hit ball.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with respect to a table tennis practice device. As shown in FIG. 1 which is a perspective view showing the entire structure and FIG. 2 which is a side view thereof, a table tennis practice device (1) is provided with a cylindrical stand (3) provided on a base (2). A horizontal column (4) is provided at the upper end so as to be vertically movable and rotatable by a through hole (4a) provided so that the upper end of the stand can be slidably fitted therein. Similarly, the arm (5) is provided by the through hole (4b) so as to be movable left and right and rotatable.

(6) is a through hole (5) formed at the end of the arm.
According to a), the stanchions are slidably installed so as to be vertically movable and rotatable. The stanchions (6), the arms (5), and the lateral stanchions (4) are provided in the through-holes of the mother body which are slidably rotated. By rotating the thumbscrew (7) provided, the sliding length and direction can be adjusted and fixed at an arbitrary position.

A swing spring rod (9) having a striking ball (8) fixed to the tip thereof is attached to the column (6). The oscillating spring rod (9) is formed of a leaf spring having a thickness of 0.6 mm, a width of 5 mm and a length of about 20 mm. The rocking spring rod (9) which is erected by superimposing a part of the rocking spring along the above means that the lower part of the rocking spring rod (9) is attached to the supporting column (6) with the fixing band (10) and the supporting column (6) is attached. The upper end of the rocking spring rod (9) is locked by an elastic expansion / contraction body (11) such as rubber so that the rocking spring rod (9) can be moved in a predetermined manner at the time of impact by a hit ball.

An arcuate locking guide (12) is attached below the locking portion of the elastic spring and contraction body (11) of the swing spring rod (9). The locking guide (12) is formed of a wire having an inner diameter of about 10 mm, and the rocking spring rod (9) is positioned inside the wire to regulate the movement of the rocking spring rod to the outside of the wire during striking. In addition, as shown in the detailed configuration of FIG. 3, the swing spring rod (9) is covered with a vinyl tube (13) over the upper and lower positions including the mounting positions of the elastic stretchable body and the locking guide. Therefore, the vibration sound generated when the spring rod swings by impact is silenced.

At the tip of the rocking spring rod (9), there is attached a support tool (14) which is removable by sandwiching the rocking spring rod with a screw or the like, and the support tool (14) is fixed with a screw. A support surface (14
A cylindrical fixed protrusion (14b) is projected from a) in the horizontal direction.

On the fixed protrusion (14b), a ball fixing tool (15) made of a soft material and made of a suction cup having a spherical fixing surface (15a) in the horizontal direction on the front surface is formed at the rear portion thereof to have a cylindrical shape. Fit the part (15b) and fix it.

Then, the spherical hitting ball fixing surface (15a) of the ball fixing tool (15) attached to the tip of the rocking spring rod (9) and corresponding to the supporting surface (14a) of the supporting tool serving as a vertical surface. ), A hitting ball (8) which is a table tennis ball is fixed. At this time, the fixing surface (15a) is spherical and the ball fixing device (1
Since 5) is made of soft material, the impact ball (8)
The adhesive is applied to the side surface of the adhesive to adhere the adhesive to the adhesive surface (15a) so that the adhesive adheres completely to the adhesive surface (15a).

Next, the mounting structure of the swing spring rod (9) to the column (6) will be described in more detail. The rocking spring rod may be attached to the column by fixing with a fixing band (10) as shown in FIGS. 1 and 2, but FIG. 3 and a sectional view of the main part taken along the line AA. As shown in the further improved fixing configuration in 4, the rocking spring rod fixture (17) is connected to the elastic spring (18) which is inserted through the column (6) and applies a pulling force from the opposite side, and is locked. By doing so, it will move slightly with an impact force above a predetermined level, and
You may make it rotatable about 30 degrees.

That is, the fixing tool (17) locked by the elastic spring (18) has a pinching part (19) for pinching the rocking spring rod (9) and tightening and fixing it with the thumbscrew (7). A downwardly projecting shaft (20) is provided between the sandwiching portion (19) and the wall of the column (6). The convex shaft (20) penetrates the cylindrical collar (21) attached to the side wall of the column, and the downward protruding end is locked with a pin to prevent it from coming off. With this structure, the fixture (17) Is always attracted to the column wall by the elastic spring (18), and when the swinging spring rod (9) is applied with a striking force or a twisting load of a predetermined amount or more, it resists the spring force and is a cylindrical collar. The rotation of the convex shaft (20) by the (21) is so formed as to be able to follow the rotation of the swing spring rod (9) about 30 degrees in the left-right direction.

The operation of the training device in the above embodiment will be described below. When practicing table tennis,
The horizontal pillar (4), the arm (5), and the stand (3)
The height, direction, and angle of the support column (6) are set by the thumbscrew (7) according to the height of the user and the desired purpose of practice, and the striking ball (8) held in place by the racket.
Hit the ball.

At this time, the position of the hitting ball (8) can be set at a plurality of positions, as shown in FIG. 1, at two positions in this example, and the arms (5) (5 ') and the columns (6) ( By adjusting the height of both sides or adjusting the interval width by adjusting 6 '), it is possible to change the mutual height and interval position of the striking balls (8) (8'), and shoot, drive, You can practice a variety of ball hits such as curve driving and footwork.

When the striking ball (8) is hit, the impact force is received from the front by a ball fixing device (15) consisting of a suction cup which widely covers the back surface of the striking ball (8), The back support tool (14) absorbs and damps the rocking spring rod (9) fixed in close proximity to the support tool and returns to the stationary state to prepare for the next impact.

At the time of hitting the ball, the hitting ball (8) and the rocking spring rod (9) are in the state shown by the chain double-dashed line in FIG. 3, and the rocking spring (9) is largely displaced rearward, but the elasticity of the spring rod itself. Along with the force, the amount of displacement is reduced by the vibration absorbing force of the rubber elastic stretchable body and the locking force of the wire locking guide (12), and it quickly returns to its original position and stands still.

According to the results of experiments conducted by the present inventor, the time required for the ball to come to rest after hitting is about 3.5 seconds, which is a very short time to recover. Since the time to play is short, you can practice comfortable hitting. Further, the player can hit the ball without completely resting, and can practice continuous hitting ball 60 to 70 times per minute without any problem.

Further, as described above, when the structure of the fixing tool (17) shown in FIG. 3 is adopted, the fixing tool (17) itself is also rotated by striking. Especially, as in wide angle ball practice, the front team , About 70 ~ that you can aim at the opponent's corner from the middle team
When a ball is hit at an angle of 80 degrees, torsional stress is generated in the rocking spring rod (9) formed of a leaf spring, and the load becomes large, but a load larger than a predetermined value is applied. At this time, the fixing tool (17) moves outward against the spring force and, as shown by the arrow in FIG. 4, the cylindrical collar (21).
By rotating the convex shaft (20) in the inside, it is possible to follow a certain degree of rotation of the swing spring rod (9), and the sucker surface of the ball fixing device (15) against the striking ball (8) is formed. Combined with elasticity, durability is increased.

As described above, according to the ball-practice practice apparatus according to the above embodiment, the batting ball (8) is an actual table tennis celluloid ball, and the ball fixing device (15) is located on the back surface of the batting ball (8). Then, the fixed protrusion (14b) of the support tool (14) is fitted into the cylindrical portion (15b) to receive the impact of the impact on the support surface (14b) and close to the swing spring rod (9). Since it is fixed, the user feels like hitting only the ball, and the rocking spring rod (9), elastic elastic body (11), and fixture (1
By the interaction of 7), a realistic feel at impact can be obtained.

Moreover, regarding the durability, which is the most important requirement, the positional relationship between the impact ball (8) and the ball fixing device (15),
And since the ball fixing device (15) is a suction cup, covers the striking ball (8) with a wide spherical surface, and is formed of a soft material and attached to the support device (14) as described above, The impact absorbing power at the time of hitting the ball becomes large, so that the service life of the hitting ball can be remarkably extended.

The rocking spring rod (9) is also made of a leaf spring, and the upper part of the fixed part is locked by the elastic expansion / contraction body (11). In addition to having the effect of returning to, the impact load on the leaf spring portion at the time of hitting the ball can be greatly reduced, and the durability can be maintained for a long time.

The vinyl tube (13) coated on the rocking spring rod (9) has a striking sound generated by the rocking spring rod coming into contact with the column (6) and the wire locking guide (12) at the time of striking, and a leaf spring. Not only is it effective in canceling the chattering noise generated when oscillates, but also has a buffering effect on the displacement of the swing spring rod (9), which contributes to the promotion of durability.

A large load is continuously applied to the rocking spring rod (9) at the time of practice, and although the durability can be maintained for a long time by the above-described structural action, the stressed portion is broken due to long-term use. Is inevitable. According to the results of experiments by the inventor, the leaf spring has a durability to withstand about 10,000 hits, and in many cases, the rubber elastic stretchable body (11) is broken due to fatigue. However, according to the above configuration, the rocking spring rod (9) can be removed very easily by removing the fixing screws at the upper end and the lower part, and the replacement work with a new leaf spring is also easy.

The durability of the striking ball (8) is as described above, and it has a sufficient life. However, if the striking ball is broken due to long-term use and is broken, a ball fixing device is provided. It is sufficient that the table tennis ball (8) is adhered to the suction cup (15) by making the spherical surface in close contact with each other. This integrated product is formed by swinging the cylindrical portion (15b) at the rear of the suction cup with the spring bar (9).
By fitting it into the fixed protrusion (14b) of the support tool (14) attached to the tip of the, it can be replaced easily and at low cost.

Next, another embodiment of the present invention will be described with reference to FIG. 5, in which the same parts as those in the above-mentioned embodiment are designated by the same reference numerals. In this embodiment, the swing spring rod (29) is not a leaf spring having a unit length but a long length, for example, a length of 3 m, and the surplus portion (29a) is wound in a coil shape and placed below the device. It is stored.

When the rocking spring rod (29) is broken due to fatigue or the like, the broken portion is generally slightly above the elastic stretchable body (11). Therefore, the upper portion of the broken portion is removed and A new leaf spring is pulled up about 10 cm from the lower surplus portion (29a) and inserted into the vinyl tube (13), and the upper portion is screwed to the support tool (14) and the tip overlapping portion with the support (6) is elastically expanded and contracted. Lock with the body (11),
The lower part may be screwed to the fixture (17).

The leaf spring (29) can be easily replaced when it is broken, for example, by supplying a new one as needed and installing and fixing it. It can be continued without interruption for a long time by replacement.

Although not shown, notches are made at intervals of, for example, 20 cm on the leaf spring surface of a long rocking spring rod.
If the leaf spring breaks due to long-term practice, you can cut it at the notch to remove the broken portion, and raise the new leaf spring portion by 20 cm to use it, making the replacement work even easier. Become.

FIG. 6 is a rear view of the upper part of the batting practice device, which is similar to the above-described one, and shows a further embodiment of the present invention. In this embodiment, the striking ball (8) and the ball fixing tool (15) are the same as those in the above-mentioned embodiment, but a cylindrical fixing protrusion for inserting and fixing the cylindrical portion of the ball fixing tool (15) is provided. The shape of the support tool (34) is different.

The support tool (34) has two locking portions (34c) below the fixed projection (34b) together with the fixed projection (34b).
Are provided side by side in a direction perpendicular to the projecting direction, and the locking portion (34c) has a diameter of 2. instead of the leaf spring.
Swing spring rod (39) consisting of two coil springs of 5 to 3 m
(39) is attached.

The rocking spring rods (39) and (39) are locked at the tip end overlapping portion with the support column (6) by the elastic expansion and contraction body (11) as in the above embodiment, and the lower end is fixed by the fixing band (30). Although not shown in the drawing, the two coil springs are fixed to the column (6) while maintaining the adjoining state, but if the vinyl springs are covered with the coil springs as in the above-described embodiment, the sound deadening effect at the time of impact is obtained. At the same time, it is possible to obtain a cushioning effect against the displacement due to the impact of the coil spring.

According to the above-mentioned embodiment, by the extension and the pulling action of the two or several coil springs (39) (39) juxtaposed to each other, the same action and effect on the hit ball as the leaf spring can be obtained. The time from rocking after hitting, which was extremely difficult with a single coil spring, to returning to the original position and stable resting can be significantly shortened, and it is durable due to stable rocking even against angled hits. It is possible to improve the sex.

In the above embodiment, the swing spring rod (39)
In the above description, the side-by-side configuration of the two coil springs is described. However, one bundle may be added to the rear surface of the two side-coupling portions to form a bundle of three or more bundles.

In the above embodiment, the stand type construction from the floor as shown in FIG. 1 has been described.
Not limited to this, a base is directly provided on the lower end portion of the column to which the swing spring rod is attached, and a predetermined height can be adjusted. By installing this on the surface of a table, for example, a compact and simple type can be achieved. It may be used as a table tennis practice device.

Further, the ball game to be practiced is not limited to table tennis,
It goes without saying that it can be widely applied to those who practice batting such as tennis and baseball batting without impairing the purpose.

[0045]

According to the first aspect of the present invention, it is possible to obtain a realistic shot feeling, to practice a comfortable hitting ball, and the ball fixing device is formed of a soft material by covering the hitting ball with a wide spherical surface. As a result, the impact absorbing power at the time of hitting the ball becomes large, and the service life of the hitting ball can be remarkably extended.

According to the second aspect of the present invention, the hitting ball is returned to the stationary state in an extremely short time, and since it does not take a long time until the hitting ball comes to rest after the hitting ball, comfortable hitting ball practice can be carried out. According to the invention of claim 3, the extension and the pulling action of two or more coil springs juxtaposed to each other stabilize and stabilize the swaying motion after hitting, which is difficult with the conventional one coil spring. It is possible to significantly shorten the time until, and it is possible to improve the durability by stable swinging even at an angled impact.

According to the fourth aspect of the present invention, the feeling of hitting the ball is excellent, and the amount of displacement of the rocking spring rod at the time of hitting the ball is reduced by the vibration absorbing force of the elastic expansion and contraction body, and it quickly returns to the original position and stands still. Not only can this be done, but the impact load on the leaf spring portion at the time of hitting the ball can be greatly reduced, and durability can be maintained for a long time.

According to the fifth aspect of the present invention, even when the ball is hit at an angle as in wide-angle ball practice, the fixed part can move outward against the spring force and can follow the rotation. Therefore, the durability can be improved in combination with the elasticity of the ball fixing device with respect to the striking ball.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing an embodiment of a ball game training device of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a side sectional view showing a detailed configuration of a main part of FIG.

4 is a sectional view taken along the line AA of FIG.

FIG. 5 is a side sectional view of an essential part showing another embodiment of the present invention.

FIG. 6 is a rear view of an essential part showing still another embodiment of the present invention.

[Explanation of symbols]

1 ... Practice device 2 ... Base 3 ... Stand 4 ... Horizontal support 5 ... Arm 6 ... Support 7 ... Thumbscrew 8 ... Impact ball 9, 29, 39 ... Oscillating spring rod 10 ... Fixed band 11 ... Elastic expansion body 12 ... Locking guide 13 ... Vinyl tubes 14, 34 ... Supporting tool 14a ... Supporting surfaces 14b, 34b ...
Fixed protrusion 15 ... Ball fixing device 15a ... Fixing surface 15b ... Cylindrical part 17 ... Fixing device 18 ... Elastic spring 19 ... Clamping part 20 ... Convex shaft 21 ... Cylindrical collar 30 ... Fixing band 34c ... Locking part

Claims (5)

[Claims] 1. A pedestal, a stanchion attached to the pedestal so as to be movable up and down, a oscillating spring rod attached to the stanchion and having a tip protruding a predetermined length from the end surface of the stanchion, and an oscillating spring rod. A support member attached to the tip of the support member provided with an attachment portion of a sphere fixing device on the end surface, and a sphere fixing device made of a soft material attached with a spherical fixing surface corresponding to the support surface of the attachment portion, A ball-practice practice device such as table tennis, which is composed of a hitting ball fixed to the spherical surface of a ball-fixing device. 2. A ball game for table tennis or the like according to claim 1, wherein the rocking spring rod is formed of a leaf spring, and the plate surface of the leaf spring is oriented in the same direction as the support surface of the ball fixing tool of the support tool. Practice equipment. 3. The ball-practice practice device for table tennis or the like according to claim 1, wherein the swinging spring rod is formed by a bundle of a plurality of rod-shaped coil springs. 4. The strut and the rocking spring rod are overlapped over a predetermined length, and the upper end of the overlapped portion is connected and locked by an elastic stretchable body, and the rocking spring rod at the lower portion is fixed to the strut. The ball-practice exercise device such as table tennis according to claim 1 or 2, characterized in that. 5. The movable portion can be moved by an impact force at the time of hitting a ball by connecting a lower end fixing portion of the swing spring rod to the column to an elastic spring body fixed to the column.
4. A ball-practice practice device such as table tennis according to any one of 4 to 4.