JP3193694U - Table tennis ball hitting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a table tennis ball striking tool capable of striking a table tennis ball from all directions and easily replacing the table tennis ball. SOLUTION: A cylindrical strut 3 is erected in a central portion of a base 2, a height adjusting cylindrical body 4 is inserted into the cylinder of the cylindrical strut 3, and the height adjusting cylindrical body 4 is inserted. A plastic product in which a high-elasticity cylinder 5 is inserted, a high-elasticity linear body 6 which is inserted into the high-elasticity cylinder 5 and projects upward is provided, and a table tennis ball 7 is vertically penetrated and held at an upper end portion. A support rod 8 is provided, and the lower end portion of the support rod 8 and the upper end portion of the highly elastic linear body 6 are detachably connected via a joint 9. [Selection diagram] Fig. 1

Description

  The present invention relates to a table tennis ball hitting tool that allows a table tennis ball to be easily struck by one person.

  Conventionally, as a table tennis training device that can be performed by one person, a ball is provided at the tip of the leaf spring, and a ball striking structure in which the lower portion of the leaf spring is fixed by a leaf spring lower holder is fixed to the post of the table. There is one in which the ball is placed in front of the body and practiced to hit the ball and practice footwork (Patent Document 1).

  In this case, a leaf spring is used, and the swinging direction of the leaf spring is limited to a certain direction. For this reason, the direction in which the ball can be hit is limited, and the ball cannot be hit in any direction.

JP 2013-9934 A

  Accordingly, an object of the present invention is to provide a table tennis ball hitting tool that can hit a table tennis ball from any direction and can easily replace the table tennis ball.

In order to solve the above-mentioned problem, the device according to claim 1 is characterized in that a cylindrical column is erected in the center of the base, a height adjusting cylinder is inserted into the cylinder of the cylindrical column, A plastic in which a high-elasticity cylindrical body is inserted into a height-adjusting cylindrical body, a high-elasticity linear body that is inserted into the high-elasticity cylinder and protrudes upward is provided, and a table tennis ball is vertically penetrated and held at the upper end. A support rod made of metal is provided, and the lower end portion of the support rod and the upper end portion of the highly elastic linear body are detachably connected via a joint.
The invention according to claim 2 is such that a highly elastic linear body has its lower end penetrated to the lower end of the highly elastic cylindrical body.
The invention according to claim 3 uses a plastic support rod as a urethane rod having a rubber hardness of 70 to 90 degrees.
The device according to claim 4 is provided with means for preventing the joint from coming off.

According to the first aspect of the present invention, a cylindrical column is erected at the center of the base, a height adjusting cylinder is inserted into the cylinder of the cylindrical column, and a high elasticity is inserted into the height adjusting cylinder. A cylindrical body is inserted, a high-elastic linear body that is inserted into the high-elasticity cylinder and protrudes upward is provided, and a plastic support bar that holds a table tennis ball penetrating in the vertical direction is provided at the upper end portion. Since the lower end of the bar and the upper end of the highly elastic linear body are detachably connected via a joint, the table tennis ball can swing in any direction and can be hit from any direction. Also, since the support bar that holds the table tennis ball is connected via a joint, if the support bar that holds the table tennis ball is removed from the joint, the table tennis ball is replaced from the support bar, and the support bar is connected to the joint again. Can easily replace table tennis balls.
Since the lower end part of the highly elastic linear body is penetrated to the lower end part of the highly elastic cylindrical body, the rigidity of the highly elastic cylindrical body is increased.
In the invention according to claim 3, since the plastic bar is a urethane bar having a rubber hardness of 70 to 90 degrees, the plastic bar has an appropriate elasticity and a good degree of bending.
The invention according to claim 4 is provided with means for preventing the joint from coming off, so that when the table tennis ball is hit, there is no possibility that the support bar will fall off carelessly.

It is a front view of the table tennis ball hitting tool by the Example of this invention. It is the A section expanded sectional view of FIG. It is the B section expanded sectional view of FIG. It is the C section expanded sectional view of FIG. It is an expanded sectional view of the joint part of FIG. It is an enlarged front view of the support bar holding the table tennis ball.

  Embodiments of the present invention will be specifically described below with reference to the drawings. A table tennis ball hitting tool 1 according to an embodiment of the present invention includes a base 2, a cylindrical support 3 standing at the center of the base 2, and a height adjusting cylindrical body inserted into the cylindrical support 3. 4. A high-elasticity cylindrical body 5 inserted into the height-adjusting cylindrical body 4, a high-elasticity linear body 6 projecting upward through the high-elasticity cylindrical body 5, and a table tennis ball 7 at the upper end The main member is a plastic support rod 8 that is held through and a joint 9 that removably connects the lower end portion of the support rod 8 and the upper end portion of the highly elastic linear body 6.

A female screw 10 is formed at the center of the base 2, and a male screw 11 formed on the outer peripheral surface of the lower end of the cylindrical support 3 is screwed into the female screw 10, so that the cylindrical support 3 is attached to and detached from the center of the base 2. Stand up as possible. At this time, the nut 12 is tightened to firmly fix the cylindrical support 3 to the base 2 (FIG. 2). A thumbscrew 13 is provided on the upper portion of the cylindrical column 3 to adjust the vertical position of the height adjusting cylinder 4 inserted into the cylinder so that the height of the table tennis ball 7 becomes a desired height. It is.
A non-slip rubber plate 14 is attached to the bottom surface of the base 2. A stopper 15 for preventing the height adjusting cylinder 4 from falling downward is fitted to the lower end of the cylindrical support column 3 in the cylinder.

A highly elastic cylinder 5 is inserted and fixed to the upper part of the height adjusting cylinder 4. A highly elastic linear body 6 is inserted and fixed in the highly elastic cylindrical body 5. The highly elastic linear body 6 is inserted to the lower end portion of the highly elastic cylindrical body 5 and increases the rigidity of the highly elastic cylindrical body 5.
A short adapter 16 having the same diameter and the same material as the plastic support rod 8 is fixed to the upper end portion of the high elastic linear body 6, and the high elastic linear body 6 is connected via the adapter 16. The upper end is connected to the joint 9.

  A plastic support rod 8 holding the table tennis ball 7 penetrating in the vertical direction is provided at the upper end portion, and the lower end portion of the support rod 8 and the upper end portion of the highly elastic linear body 6 are connected via a joint 9. It is detachably connected.

  Retaining stoppers 17 and 18 are attached to the upper and lower portions of the table tennis ball 7 of the support bar 8 so that the table tennis ball 7 does not fall out of the support bar 8 by hitting. The stopper 17 on the upper end side may be formed integrally with the support bar 8. The plastic support bar 8 has a suitable elasticity such as urethane rubber having a rubber hardness (Shore A) of about 70 to 90 degrees, and is restored when the table tennis ball 7 is hit with a racket. The property is moderate and preferable.

  The joint 9 is provided with a pair of upper and lower retaining prevention means 20, 20 in the joint body 19. The retainer preventing means 20 includes a cylindrical stopper 22 having a restriction claw 21 bent at the inner end, a cylindrical action body 24 having a flange portion 23 at the outer end, and releasing and acting on the restriction claw 21. The stopper 22 and the cylindrical action body 24 are formed of a holding body 25 that holds the joint body 19 inside.

  Reference numeral 26 is a restriction protrusion or restriction protrusion formed on the inner peripheral wall of the joint main body 19, and holds the retaining means 20 in the joint main body 19. A first step portion 27 is formed in the joint body 19, and the retaining means 20 and packing 28 are accommodated in the first step portion 27. Further, a second step portion 29 is formed in the central portion in the joint body 19, and the end portion of the support bar 8 (or adapter 16) is regulated by the second step portion 29. The packing 28 is made of rubber, and prevents the support bar 8 (or adapter 16) and the joint body 19 from rotating due to friction.

When pulling out the support bar 8 from the joint 9, as shown in the upper right half of FIG. 5, the flange 23 of the cylindrical action body 24 is pushed down to push the restricting claw 21 outward, and the support bar 8 The engagement between the outer peripheral surface and the restricting claw 21 is released. In this state, the support bar 8 is extracted from the joint 9.
When inserting the support bar 8 into the joint 9, the support bar 8 is inserted from the insertion port until the tip of the support bar 8 reaches the second step portion 29. Then, the tip of the regulation claw 21 is engaged with the outer peripheral surface of the support bar 8 so that the support bar 8 does not come off.

Since the joint 9 is provided with the retaining means 20 for preventing the table tennis ball 7 from being hit, the support bar 8 for holding the table tennis ball 7 is not accidentally dropped off.
Even if it comes off, the support bar 8 is made of plastic, so the danger is low and safety is ensured.

  When the table tennis ball 7 is hit with a racket, it becomes as shown by the phantom line in FIG. 1, and the table tennis ball 7 returns to the original position at an appropriate speed and can be hit repeatedly.

  When the table tennis ball 7 is broken and replaced by hitting, the support bar 8 holding the table tennis ball 7 is removed from the joint 9. Next, the retainer 18 is removed from the support bar 8, the table tennis ball 7 is removed, a new table tennis ball 7 is mounted on the support bar 8, and the retainer 18 is attached to hold the table tennis ball 7 on the upper end of the support bar 8. And if the lower end part of the support bar 8 is connected to the joint 9, the broken table tennis ball 7 can be easily replaced. In this case, since only the table tennis ball 7 needs to be replaced, there is no cost.

The disk-shaped base 2 is made of iron and has a diameter of 250 mm and a mass of about 2.3 kg. The cylindrical support 3, the height adjusting cylinder 4, and the high elastic cylinder 5 are made of steel, and the high elastic linear body 6 uses a piano wire or stainless steel wire that exhibits high elasticity by quenching.
The cylindrical support 3 has an outer diameter of 12 mm, an inner diameter of 6 mm, and a length of about 280 mm. The height adjusting cylinder 4 has an outer diameter of 6 mm, an inner diameter of 4 mm, a length of about 370 mm, and the highly elastic cylinder 5 has an outer diameter. Is 4 mm, the inner diameter is 2 mm, the length is about 220 mm, and the highly elastic linear body 6 has an outer diameter of 2 mm and a length of about 390 mm.
The height to the table tennis ball 7 can be adjusted in the range of 850 to 1080 mm.
The table tennis ball 7 has a diameter of 40 mm, the support bar 8 has a diameter of 6 mm and a length of 140 mm, and the adapter 16 has a diameter of 6 mm and a length of 20 mm.
These numerical values are examples and can be changed as appropriate.

  The ping-pong ball hitting tool 1 according to the present invention can hit the ping-pong ball 7 with a racket from all directions, and can be used for stress relief and appropriate exercise for beginners regardless of age or sex. It can also be used to practice table tennis.

DESCRIPTION OF SYMBOLS 1 Table tennis ball hitting tool 2 Base 3 Cylindrical support | pillar 4 Height adjustment cylinder 5 High elastic cylinder 6 High elastic linear body 7 Table tennis ball 8 Support bar 9 Joint 13 Butterfly screw 16 Adapter 17, 18 Stopper 19 Joint Main body 20 Retaining prevention means 21 Restriction claw 22 Stopper 23 Flange 24 Cylindrical action body 25 Holding body 26 Restriction protrusion (regulation protrusion)
27 First step portion 28 Packing 29 Second step portion

Claims (4)

  A cylindrical column is erected at the center of the base, a height adjusting cylinder is inserted into the cylinder of the cylindrical column, a highly elastic cylinder is inserted into the height adjusting cylinder, and the height A highly elastic linear body that is inserted into the elastic cylindrical body and protrudes upward is provided, and a plastic support bar that holds a table tennis ball penetrating in the vertical direction is provided at the upper end, and the lower end of the support bar and the high elasticity A table tennis ball hitting tool, wherein an upper end portion of a linear body is detachably connected through a joint.   The table tennis ball hitting tool according to claim 1, wherein the highly elastic linear body has a lower end portion penetrating to a lower end portion of the highly elastic cylindrical body.   The table tennis ball hitting tool according to claim 1 or 2, wherein the plastic support bar is made of a urethane bar having a rubber hardness of 70 to 90 degrees. The table tennis ball hitting tool according to any one of claims 1 to 3, wherein the joint is provided with a retaining means.

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