JP2011110095A - Ball game exercise tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ball game exercise tool suppressing generation of noise and vibration when the tool hits a ball such as a basket ball, hitting the ball regardless of the shape of a ground or floor surface, and expanding a space for a user to hit the ball in the dribbling exercise without causing complaint about the noise or vibration. <P>SOLUTION: The ball game exercise tool includes a sheet-shaped elastic sheet material 11 formed of an elastic material, and a support member 20 including first and second support frames 21b and 22b for supporting end edges of the elastic sheet material 11 for supporting the elastic sheet material stretchably in the vertical direction by stretching the elastic sheet material 11 in the horizontal direction between the support frames 21b and 22b. The elasticity of the elastic sheet material 11 is set so that the ball of the weight in a set range, falling from above, can be bounced upward with the restitutive force of the stretching of the elastic sheet material. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a ball game training tool, and more particularly to a training tool suitable for basketball dribbling practice.

2. Description of the Related Art Conventionally, a play equipment for performing a shoot as described in Patent Document 1 is known as a basketball practice device.
On the other hand, a practice tool for continuously striking a ball, such as basketball dribbling or mochi, has not been proposed so far, and such a ball thrust is usually used in roads, parks, playgrounds, etc. In gymnasiums, it was performed on the ground and floor.

JP 2000-140176 A

  However, in recent years, when a ball is struck such as a basketball dribbling, it can cause complaints due to the sound and vibration generated by the ball slash, not only in the house, but also in roads, parks, playgrounds, and gymnasiums. As a result, the practice of playing and playing with such balls has been limited.

  The present invention has been made paying attention to the above-mentioned new problems that have occurred in recent years, and suppresses the generation of sound and vibration when a ball such as basketball is struck, and the shape of the ground and floor surface. It is an object of the present invention to provide a ball game practice tool that can expand a field that enables ball thrust regardless of noise and vibration, and can perform ball thrust such as dribbling practice.

  In order to achieve the above-described object, the present invention has an elastic sheet material formed into a sheet shape by an elastic material, and a support frame that supports an edge of the elastic sheet material, and the elastic sheet material is set. A support member that extends horizontally between the support frames arranged at a height and supports the support frame so that it can expand and contract in the vertical direction, and the elastic sheet material has a weight of a set range in which the elastic sheet material falls from above Is set to an elastic force that can be rebounded upward by the restoring force due to the expansion and contraction.

In the ball game training tool of the present invention, the support member is placed on the floor or the ground, and the elastic sheet material is used in a stretched state in a substantially horizontal direction between the support frames having a predetermined height. Then, a ball such as basketball is struck from the upper side toward the lower side toward the elastic sheet material. At this time, when the elastic sheet material receives the ball, the elastic sheet material expands downward and then rebounds the ball upward with its restoring force. The user can perform dribbling or mochi of basketball by repeating this in a timely manner.
As described above, since the ball is rebounded by the elastic deformation of the elastic sheet material, it is possible to significantly reduce the sound and vibration generated when the ball hits the ground or the floor. For this reason, it is possible to hit the ball without causing complaints due to noise and vibration, not only outdoors such as roads, parks, and playgrounds, but also indoors such as houses. Moreover, the shape of the ground and the floor need not be flat as long as the support member can be firmly supported, and it is not necessary to have rigidity capable of rebounding the ball. For example, stable ball thrusting is possible even on sandboxes, gravel roads, or tatami mats and carpets that could not be ball-throwed in the past, greatly expanding the field of ball thrusting such as basketball dribbling practice. It becomes possible.
Since the ball that is normally used can be used as it is, the feel of the hand at the time of dribbling a basketball can be the same as that of a dribbling that strikes the normal ground or floor.

Furthermore, in the invention according to claim 2, the elastic sheet material is stretched between the pair of first support frame and the second support frame, and both sides in the direction orthogonal to the stretch direction between the support frames are in a free state. .
For this reason, compared to the case where the entire circumference of the elastic sheet material is supported by the support frame, it is easier to ensure the amount of deformation in the vertical direction of the middle part of the elastic sheet material, and the deformation that rebounds the ball is facilitated. Suppression performance can be improved.

In the invention according to claim 3, the first leg member and the second leg member are rotated about the rotation axis so that the form can be changed between the folded state and the expanded state.
Therefore, by storing and transporting the both leg members in the folded state, it is possible to perform compact storage and facilitate transportation. On the other hand, at the time of use, the above-mentioned ball thrusting can be executed by setting both the leg members in the expanded state and locking them with the lock members.

In the invention according to claim 4, the elastic sheet material can be attached to and detached from the support frame of the support member.
Therefore, when the elastic sheet material is fatigued or damaged, the elastic sheet material can be replaced, and the cost efficiency is excellent. In addition, if a plurality of types of elastic characteristics and colors of the elastic sheet material are set, the user can select a desired elastic characteristic or a desired color according to the size and weight of the ball to be used, for example. An elastic sheet material can be selectively used, and is excellent in usability.

It is a perspective view which shows the expansion state of the ball game training tool A of Example 1 of embodiment of this invention. It is a side view which shows the expansion state of the ball game training tool A of Example 1. FIG. It is a top view which shows the expansion state of the ball game training tool A of Example 1. FIG. It is sectional drawing which shows the principal part of the ball game training tool A of Example 1, Comprising: The state cut | disconnected by the S4-S4 line | wire of FIG. 3 is shown. It is a side view which shows the front-end | tip part of the locking member 25 used for the ball game training tool A of Example 1. FIG. It is a side surface which shows the folding state of the ball game training tool A of Example 1. FIG. It is a perspective view which shows the expansion state of the ball game training tool B of Example 2. FIG. It is sectional drawing which shows the principal part of the ball game training tool B of Example 2. FIG. It is a side view which shows the expansion state of the ball game training tool C of Example 3. FIG. It is sectional drawing which shows the principal part of the ball game training tool of Example 4. It is a perspective view which shows the ball game training tool E of Example 5. FIG. It is a perspective view which shows the supporting member 520 used for the ball game training tool E of Example 5. FIG. It is a perspective view which shows the ball game training tool F of Example 6. FIG. It is a side view which shows the expansion state of the ball game training tool G of Example 7. FIG. It is a side view which shows the use condition as a chair of the ball game training tool G of Example 7. FIG. It is a perspective view which shows the ball game training tool H of Example 8. FIG. It is a perspective view which shows the ball game training tool J of Example 9. FIG. It is a perspective view which shows the example of the other locking member of this invention. FIG. 6 is a perspective view illustrating a main part of a modification of the first embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Below, based on FIGS. 1-6, the ball game training tool A of Example 1 of embodiment of this invention is demonstrated.
As shown in FIG. 1, which is a perspective view of the ball game training tool A, the ball game training tool A according to the first embodiment includes a seat member 10 and a support member 20.

The sheet member 10 includes an elastic sheet material 11 and end edge brackets 12 and 12.
The elastic sheet material 11 is formed by laminating a layer containing bubbles inside such as chloroprene rubber on a layer made of natural rubber, synthetic rubber or the like that does not have bubbles inside, and is further stretchable such as polyurethane blend on its upper surface 11a. A high knitted fabric (not shown) is used. In the first embodiment, basketball is used as a ball to be used, and the elastic sheet material 11 has a rectangular shape (for example, having a long side of 40 to 50 cm and a short side of 30 to 40 cm) as viewed from above. However, the shape is not limited to a rectangle, and a square shape may be used.

  The edge bracket 12 is formed of a metal plate or a resin plate in a substantially U-shaped cross section having an opening 12a as shown in an enlarged cross sectional view of FIG. The edge portions in the longitudinal direction of the elastic sheet material 11 are bonded together by adhesion, welding or the like.

Returning to FIG. 1, the support member 20 is configured by connecting a first leg member 21 and a second leg member 22 so as to be rotatable by a pair of leg rotation shafts 23.
The both leg members 21 and 22 are integrally formed by integrally connecting the base end portions of a pair of metal rod-like legs 21a, 21a and 22a, 22a with a first support frame 21b and a second support frame 22b. Is formed. In the first embodiment, as shown in FIG. 4, the second support frame 22b is formed in a solid quadrangular cross-sectional shape, and the first support frame 21b, legs 21a, Similarly, 22a is formed in a solid quadrangular cross-sectional shape. In addition, a buffer member 24 formed in a cylindrical shape with an elastic body such as rubber or a foamed body such as sponge is attached to the tip of the legs 21a and 22a.

  The leg rotation shaft 23 connects the substantially axial centers of the legs 21a and 22a so as to be relatively rotatable. Thereby, as shown in FIGS. 1 and 2, the support member 20 is in an expanded state in which both the support frames 21b and 22b are separated and both the leg members 21 and 22 are opened in an X shape, and as shown in FIG. The two support frames 21b and 22b are close to each other and are formed in a folded state in which both the leg members 21 and 22 overlap each other.

A lock member 25 is provided between the leg members 21 and 22.
The lock member 25 has a base end portion attached to the first leg member 21 so as to be rotatable about a lock rotation shaft 26, and a lock pin 27 provided on the second leg member 22 at the distal end portion. A plurality of engagement grooves 25a, 25b, and 25c that can be engaged with each other are provided along the longitudinal direction of the lock member 25 (in the first embodiment, as shown in FIG. 5 at three locations). The lock member 25 maintains both the leg members 21 and 22 in an expanded state by engaging one of the engagement grooves 25a to 25c with the lock pin 27. Further, by selecting the engagement grooves 25a to 25c to be engaged with the lock pin 27, the degree of expansion, that is, the interval between the both support frames 21b and 22b can be adjusted, whereby the elastic sheet material 11 can be adjusted. The height and tension can be adjusted.

  The height and tension of the elastic sheet material 11 are appropriately set according to the weight of the ball to be used. In the first embodiment, when the basketball is used and dribbling is performed, The material and thickness of the elastic sheet material 11 are set so that the elastic sheet material 11 does not reach the ground or the floor by weighting and an optimal rebound is obtained. Further, when the support member 20 is in the expanded state, the heights of the support frames 21b and 22b and the elastic sheet material 11 extended between them are arranged at a height in the range of 15 to 35 cm. Preferably, in the first embodiment, the engagement grooves 25a to 25c are selected so that the height can be adjusted within a range of 20 to 25 cm.

(When not in use)
When the ball game training tool A is not used, the both leg members 21 and 22 are rotated relative to each other about the leg rotation shaft 23 to be in the folded state shown in FIG.
Thereby, the ball game training tool A can be accommodated in a compact manner and can be easily carried.

(while using it)
At the time of use, both the leg members 21 and 22 are rotated in the expanding direction around the leg rotation shaft 23, and the elastic sheet material 11 is moved between the support frames 21b and 22b as shown in FIGS. The expanded state is expanded, and any of the engagement grooves 25a to 25c of the lock member 25 is engaged with the lock pin 27 and locked.

At this time, depending on which of the three engagement grooves 25a to 25c with which the lock pin 27 is engaged is selected, the interval and height of the support frames 21b and 22b change, and the repulsive force and height of the elastic sheet material 11 change. Adjustments can be made.
That is, when the engagement groove 25a far from the tip of the lock member 25 is selected among the three engagement grooves 25a to 25c, the elastic sheet material 11 is positioned relatively high between the support frames 21b and 22b (for example, 25 cm), the degree of extension is relatively low, and the repulsive force is set to the lowest. On the other hand, as shown in FIG. 1 and FIG. 2, when the engagement groove 25c on the most distal side is selected, the elastic sheet material 11 has a relatively lowest position (for example, 20 cm) between the both support frames 21b and 22b. ) And is set to have the highest repulsive force.

And in use, as shown in FIGS. 1 and 2, the support member 20 of the ball game training tool A in the expanded state is placed on the ground or floor.
In this state, when a ball such as a basketball (not shown) is struck from the upper side to the lower side as indicated by an arrow BO on the elastic sheet material 11, the elastic sheet material 11 extends downward, and then the ball is arrowed by its restoring force. Rebounded in the opposite direction of BO. By doing this continuously, it is possible to perform basketball dribbling, mochi, and the like.

  At this time, the ball does not collide with the ground or the floor and bounces with its own elastic force, but with the elastic force of the elastic sheet material 11 without colliding with the ground or the floor, the ball is directly applied to the floor or the ground. Compared to the case, generation of sound and vibration when the ball rebounds is suppressed. That is, it is considered that the sound and vibration generated when the ball is struck are generated as the ball collides with the floor or the ground, and also due to pressure change or resonance in the internal closed space due to elastic deformation of the ball itself. On the other hand, in the case of the first embodiment, the opponent with which the ball collides is the elastic sheet material 11, and the collision sound is small compared to the collision with the ground or the floor, and the elastic sheet material 11 is in the atmosphere. When elastically deformed and restored, resonance in a closed space such as a ball does not occur, and sound and vibration generated along with expansion and contraction of the elastic sheet material 11 become extremely small.

  Furthermore, since the elastic sheet material 11 is formed by laminating chloroprene rubber containing air bubbles inside and knit fabric is pasted on the upper surface 11a, the elastic sheet material 11 is made of only the rubber that does not have air bubbles. Impact noise can be suppressed.

  In addition, since the buffer member 24 is attached to the tip of the legs 21a and 22a of the both leg members 21 and 22, the input when the ball is struck is transmitted to the ground and the floor via the legs 21a and 22a. The generation of sound due to this can be suppressed.

  In the sheet member 10, the edge bracket 12 having a U-shaped cross section at both end portions in the longitudinal direction is fitted to the square support frames 21 b and 22 b and is fitted at two corners. Even when the edge bracket 12 is pulled in the direction of the arrow FO in FIG. 4 as the elastic sheet material 11 expands and contracts, the edge bracket 12 remains in the support frame even when a moment is applied to the support frames 21b and 22b. The fitting state to the support frames 21b and 22b can be maintained without rotating or disengaging with respect to 21b and 22b.

(During rubber fatigue)
When the repulsive force of the elastic sheet material 11 of the sheet member 10 decreases due to use over time, first, the engagement grooves 25a to 25c to be engaged with the lock pin 27 are the ones on the most distal side of the lock member 25 (25c ) Is selected, the extent of expansion of the elastic sheet material 11 can be increased to compensate for the reduction in repulsive force.

Furthermore, when the repulsive force of the elastic sheet material 11 is significantly reduced or damaged, the sheet member 10 can be replaced with a new one.
In this case, since the sheet member 10 only has the edge bracket 12 fitted to the support frames 21b and 22b, the sheet member 10 can be detached from the support member 20 by removing this fitting.
Then, the edge bracket 12 of the new sheet member 10 is fitted to the support frames 21b and 22b, and the replacement is completed.

As described above, in the ball game practice tool A of the first embodiment, the effects listed below can be obtained.
a) The ball game training tool A is placed on the ground or floor in the expanded state shown in FIGS. 1 and 2, and the ball can be dribbling or tacking by striking the elastic sheet material 11. In this way, the ball does not directly strike the ground or the floor, and since the deformation of the ball itself can be greatly suppressed, the sound and vibration generated when the ball collides with the ground and the floor can be greatly reduced. . For this reason, it is possible to carry out ball thrusting such as basketball dribbling practice without generating loud sounds and vibrations, not only outdoors such as roads, parks, and playgrounds, but also indoors such as houses.
In addition, since the ball does not strike the ground or floor directly, the ball can be used even in places with unevenness such as gravel, where sand balls, tatami mats, carpets etc. cannot be repelled. It will be possible to poke, and it will be possible to greatly expand the field of ball-pushing practice and play.
Since the ball that is normally used can be used as it is, the feel of the hand at the time of dribbling a basketball can be the same as that of a dribbling that strikes the normal ground or floor.

b) The sheet member 10 is supported by the support frames 21b and 22b only on the two opposite sides of the quadrangle.
For this reason, compared with what supported the four sides of the rectangle with the support frame, the deformation amount of the intermediate part of the elastic sheet material 11 can be ensured, and an elastic coefficient can be suppressed. Therefore, when the ball is struck, the generation of a collision sound can be suppressed, the ball can be rebounded mainly by the repulsive force of the elastic sheet material 11, and the generation of the sound accompanying the rebound of the ball can be suppressed.
In addition, even when the position where the ball strikes deviates in the direction perpendicular to the longitudinal direction, the ball does not collide with the frame portion, and therefore it is unlikely to rebound in the opposite direction as in the case of collision with the frame.
Moreover, since the elastic sheet material 11 is rectangular, it is easy to straddle the ball training equipment A in the direction orthogonal to the longitudinal direction in the dribbling practice of the basket, and there are variations of practice such as dribbling back and forth between the crotch. spread. In addition, even if it is the rectangular shape which is easy to straddle by supporting two sides of the longitudinal direction of the elastic sheet material 11 with both the support frames 21b and 22b, the deformation amount of the elastic sheet material 11 can be ensured.

  c) The support member 20 can be folded and expanded by rotating the first leg member 21 and the second leg member 22 about the leg rotation shaft 23. Therefore, as a folded state, compact storage and easy transportation can be enabled. Further, since the support member 20 is made of a solid metal, it is rich in weight and can suppress vibration of the support member 20 when the ball is struck, compared to a hollow member.

d) Since the elastic sheet material 11 is detachable from the support member 20, when the elastic sheet material 11 is fatigued or damaged, only the sheet member 10 can be replaced, which is economically excellent.
In addition, when carrying the ball game training tool A, it is possible to carry it in a more compact state by removing the seat member 10.
Furthermore, by setting a plurality of types of resilience characteristics, colors, and the like of the elastic sheet material 11, it is possible to exchange for any resilience characteristics and colors, and it is possible to cope with user preferences.

e) In the first embodiment, in order to make the elastic sheet material 11 detachable from the support member 20, the edge bracket 12 having rigidity with both ends of the elastic sheet material 11 fixed in one direction is provided. Since the bracket 12 is formed so as to be detachable from both the support frames 21b and 22b, it is easier to attach and detach than the one in which the elastic sheet material 11 is attachable to and detachable from the both support frames 21b and 22b by screws or the like. The strength and durability of both end edges of the material 11 can be improved.
In addition, in the first embodiment, the end bracket 12 is formed in a U-shaped cross section, and the support frames 21b and 22b are formed in a quadrangle that fits the end bracket 12 so as to be detachable. When the elastic sheet material 11 is expanded and contracted, it can be prevented from coming off from both the support frames 21b and 22b. Therefore, for example, compared with the case where the edge bracket is formed in a U shape, it can be prevented from coming off during use without using a fixing member such as a screw, and the elastic sheet material 11 can be inexpensively manufactured with a small number of parts. It is possible to prevent detachment during detachment and use.

f) In the first embodiment, the lock member 25 that can adjust the repulsive force and the height of the elastic sheet material 11 by adjusting the distance and the height of the both support frames 21b and 22b is provided.
Therefore, the user can finely adjust the repulsive force and height of the elastic sheet material 11, and the usability is improved as compared with a case where this adjustment is impossible. Furthermore, even when the repulsive force is reduced due to deterioration of the elastic sheet material 11, the repulsive force can be increased and the use period can be extended.
In the first embodiment, the lock member 25 that adjusts the distance and height between the support frames 21b and 22b is a member that can adjust the degree of expansion when both the leg members 21 and 22 are expanded. This makes it possible to adjust the distance and height between the support frames 21b and 22b by using a structure that allows the both leg members 21 and 22 to be folded and expanded, and to make this adjustment at a low cost. did.
In addition, the adjustment of the degree of expansion when both the leg members 21 and 22 are expanded is arbitrarily selected from the plurality of engagement grooves 25a to 25c to be engaged with the lock pin 27 in the lock member 25. Therefore, it is possible to reliably adjust the degree of expansion at a low cost.

  g) As the elastic sheet material 11, a laminate of rubber containing bubbles inside on a raw or synthetic rubber layer not containing bubbles inside was used. For this reason, it is possible to achieve both of obtaining a high elastic force and obtaining a silencing performance at the time of ball collision as compared with the case using only one of the rubbers. Furthermore, since the elastic sheet material 11 is provided with a stretchable knitted fabric on the upper surface 11a, it is possible to further reduce the sound generated when the ball is struck, and the knitted fabric damages the layer having bubbles. Can be protected from.

h) Since the support member 20 is provided with the buffer member 24 at the ground contact portion, it is possible to suppress the generation of sound caused by relative movement between the support member 20 and the floor or the ground when the ball is struck.
In addition, since the buffer member 24 is placed on the tips of the legs 21a and 22a, the grounding portion of the support member 20 can be covered with the buffer member 24, so that the generation of sound can be reliably suppressed and the attachment / detachment is easy. Work at the time of manufacture or replacement is easy.

(Other examples)
Next, another example of the embodiment of the present invention will be described.
In the description of these other embodiments, the same components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted. Also, with regard to the action, the description of the action common to the first embodiment is omitted.

Next, based on FIG. 7, FIG. 8, the ball practice tool B of 2nd Example is demonstrated.
In the second embodiment, the configuration of the support member 220 is different from that in the first embodiment, and the same sheet member 10 as that in the first embodiment is used.

In the second embodiment, as the first leg member 221 and the second leg member 222, those formed by pipes having a circular cylindrical cross section are used as shown in FIG.
The first leg member 221 and the second leg member 222 are made of a metal circular pipe material and formed into a substantially square-shaped square frame shape as shown in FIG. One side of the square frame is used as a first support frame 221b and a second support frame 222b. Further, a metal or resin spacer 201 fitted to the edge bracket 12 is fixed to both support frames 221b and 222b by welding, bonding, screwing or the like.
Further, in both leg members 221 and 222, a cylindrical buffer member 224 is provided on the outer periphery of the lower frame 225 at a position facing both the support frames 221b and 222b.
Other configurations are the same as those in the first embodiment, and a description thereof is omitted.

  In the above-described ball game practice tool B of the second embodiment, the effects excluding e) can be obtained based on the same configuration as that of the first embodiment.

In the second embodiment, when the sheet member 10 is detachably attached to the support member 220, the end bracket 12 is formed in a U-shaped cross section, and the support frame 221b, 222b is connected to the end bracket 12. Since the spacer 201 to be fitted is provided, it can be attached and detached at a low cost, and the edge bracket 12 is not easily detached when the elastic sheet material 11 is expanded and contracted, which is easy to use.
Furthermore, in Example 2, since both the leg members 221 and 222 are formed of round pipes, the weight can be reduced and the transportability is excellent.

Next, based on FIG. 9, the ball game practice tool C of Example 3 is demonstrated.
In the third embodiment, the configuration of the lock member 325 is different from that of the first embodiment. The configuration other than the lock member 325 is the same as that of the first embodiment.

  The lock member 325 used in the third embodiment has a first arm 325b whose base end is rotatably attached to the leg 21a and a lock rotation pin 325a as a center, and a base end that is locked to the leg 22a. A second arm 325d is attached to the first arm 325b so as to be rotatable about a moving pin 325c and to be relatively rotatable via a connecting pin 325e. Further, the second arm 325d has a rotation stopper 325f that engages with the first arm 325b and restricts the first arm 325b from rotating in the direction opposite to the arrow r1 from the illustrated engagement position. Is provided.

Therefore, the lock member 325 can be folded when both arms 325b and 325d are rotated in the directions indicated by the arrows r1 and r2, and the both leg members 21 and 22 can be folded.
On the other hand, when both the leg members 21 and 22 are used in the X-shaped expanded state, the arrows r1 and r2 are used until the arms 325b and 325d of the lock member 325 are restricted from rotating by the rotation stopper 325f. It is rotated in the opposite direction, and is arranged so as to form a generally round shape as shown. Thereby, both leg members 21 and 22 are restricted from rotating in the folding direction, and can be maintained in the expanded state.
Moreover, based on the structure similar to Example 1, the effect of a) -e) and g) h) except the above-mentioned f) can be acquired.

Next, based on FIG. 10, the ball game training tool of Example 4 is demonstrated.
The fourth embodiment is a modification of the second embodiment, and uses a support member 220 formed of a round pipe as in the second embodiment. The difference from the second embodiment is that both the support frames 221b and 222b (the first support frame 221b is not shown) eliminates the spacer 201, while passing through the screw 400 and the weld nut 402 that meshes with the screw 400. This is the point.

  Further, in the sheet member 410, the edge brackets 412 provided at both end edges in the longitudinal direction of the elastic sheet material 11 are, as shown, the round pipes of the second support frame 222b and the first support frame 221b (not shown). It is formed in a substantially U shape having an arc surface along the outer peripheral shape. A through hole 404 is opened in the elastic sheet material 11 and the edge bracket 412 at a position coaxial with the through hole 401.

Therefore, in the fourth embodiment, when the seat member 410 is attached / detached, the screw 400 is loosened and the edge bracket 412 is removed from both the support frames 221b and 222b.
When attaching the sheet member 410, the edge bracket 412 is overlaid on both the support frames 221b and 222b, and the positions of the through holes 404 are aligned with the through holes 401 of the both support frames 221b and 222b, so that the screw 400 And is engaged with the weld nut 402.

Even in the fourth embodiment, the sheet member 410 can be attached to and detached from the support member 220. In use, the edge bracket 412 is fixed to the both support frames 221b and 222b with screws 400. Therefore, the edge portion of the sheet member 410 does not come off from both the support frames 221b and 222b by the pulling force of the elastic sheet material 11.
In addition, based on the structure similar to Example 1, while being able to acquire the effect of a) -d) f) g) except the above e) h), it is the same as that of said h) by the buffer member 224. An effect can be obtained.

Next, based on FIG. 11, FIG. 12, the ball game training tool E of 5th Example is demonstrated.
In the fifth embodiment, the configuration of the support member 520 is different from that of the first embodiment.
That is, the support member 520 is a fixed one that cannot be folded, and as shown in FIG. 12, a rectangular frame-shaped base frame portion 521 and four base frames 521 raised from both ends in the longitudinal direction. A leg 522 and a first support frame 523 and a second support frame 524 supported between the pair of legs 522 are provided. In addition, it is preferable to provide a buffer member on the lower surface of the base frame portion 521.
And the sheet | seat member 10 fits the edge bracket 12 to each support frame 523,524, and the both ends edge part of the longitudinal direction is supported by the support member 520. FIG.

In the fifth embodiment, since the support member 520 includes the base frame portion 521 having a rectangular frame shape, the stability is excellent.
Also in the fifth embodiment, the effects a), b), d), e), g) and h) except for the above c) f) can be obtained based on the same configuration as that of the first embodiment.

Next, a ball game training tool F of Example 6 will be described based on FIG.
The sixth embodiment is a modification of the fifth embodiment, in which the legs 622 are attached to the base frame portion 521 so as to be foldable.
That is, the leg 622 is rotatably attached to the base frame portion 521, and the lock having the same structure as the lock member 325 shown in the third embodiment is provided between the leg 622 and the base frame portion 521. A member 600 is provided. That is, the lock member 600 includes two arms 601 and 602 and can be folded into a V shape from the state shown in the figure, but can be folded when the intermediate portion is lifted into a V shape. The leg 622 is kept upright.

Therefore, at the time of storage or transportation, 622 can be folded to be compact.
Also in the fifth embodiment, the effects a), b), d), e), g) and h) except for the above c) f) can be obtained based on the same configuration as that of the first embodiment.

  Even in the sixth embodiment, the inclination angle of the leg 622 can be adjusted in a plurality of stages as in the first embodiment, or can be adjusted in a stepless manner using, for example, the means shown in FIG. By doing so, the effect f) described above can be obtained.

Next, based on FIG. 14, FIG. 15, the ball game training tool G of Example 7 is demonstrated.
The seventh embodiment is a modification of the second embodiment, and is an example in which the ball game training tool G can be used as a chair. That is, the cloth chair seat 701 is stretched between the first support frame 221b and the lower frame 225.

Therefore, as shown in FIG. 14, both the leg members 221 and 222 can be used for ball thrusting in the expanded state, and from the state of FIG. 14, the chair seat 701 comes up as shown in FIG. 15. In this way, when the chair seat 701 is extended by turning 90 degrees counterclockwise in the figure, it can be used as a chair.
Even in the seventh embodiment, although not shown, the same locking member 25 as in the first embodiment is provided.
Moreover, based on the structure similar to Example 1, the effect of said a) -h) can be acquired.

Next, a ball game training tool H of Example 8 will be described based on FIG.
In the first embodiment, the elastic sheet material 11 of the sheet member 10 is formed in a rectangular shape and both end edges in the longitudinal direction are supported by both the support frames 21b and 22b. Is supported by the support frame 821 of the support member 820.

  That is, the support member 820 includes a circular support frame 821. The elastic sheet material 811 is formed in a substantially circular shape, and its entire circumference is supported by being welded or bonded to the support frame 821.

  The support frame 821 is provided with four legs 822 that are detachable. This attachment / detachment is performed by engaging and disengaging a screw 801 provided at the tip of the leg 822 with a weld nut (not shown) provided in the support frame 821.

The ball game training tool H of Example 8 configured as described above has a simple structure and is excellent in economic efficiency.
In addition, since the legs 822 can be attached to and detached from the support frame 821, the legs 822 can be removed and stored in a compact manner during storage and transportation.
Even in Example 8, the effects a) and g) described above can be obtained.

Next, a ball game training tool J of Example 9 will be described with reference to FIG.
The ninth embodiment is a modification of the eighth embodiment, and the support frame 921 of the support member 920 is formed in a rectangular frame shape. The legs 922 are detachably formed by screws and weld nuts not shown in the same manner as in the eighth embodiment.
Further, the elastic sheet material 911 is also formed in a rectangular shape, and is supported by being welded or bonded to the support frame 921 at the edge of the entire circumference.
Therefore, even in the ninth embodiment, the same effect as that of the eighth embodiment can be obtained.

  As described above, the embodiment of the present invention and Examples 1 to 9 have been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment and Examples 1 to 9. Design changes that do not depart from the gist of the present invention are included in the present invention.

  Specifically, in Examples 1 to 9, an example in which the elastic sheet material was formed in a rectangular shape and a circular shape was shown, but the shape is not limited to this, and for example, as in Example 1 In the case of supporting the edge of the two sides of the sheet member 10, it may be formed in a square shape, or when supporting the entire peripheral edge of the elastic sheet material 811, 911 as in the eighth and ninth embodiments. , Hexagons, octagons and other polygons.

  In addition, as an elastic sheet material, a chloroprene rubber containing bubbles was laminated on a sheet of natural rubber, synthetic rubber, etc., and a knit fabric with high elasticity was pasted on it. The material is not limited to these as long as it is an elastic sheet material having elasticity to rebound the ball. For example, only a sheet of natural rubber or synthetic rubber may be used, or only rubber having bubbles may be used. Or you may affix a knit fabric on those surfaces. The elastic sheet material may be any material that can be stretched between the support frames so that the ball can be rebounded. In addition to the single planar shape shown in the embodiment, the elastic sheet material may be formed in a net shape, You may use what arranged two or more things in parallel.

In the first and fourth embodiments, the edge brackets 12 and 412 are provided at both longitudinal ends of the sheet members 10 and 410, respectively. These edge brackets 12 and 412 are preferable for ensuring the strength of the edge of the elastic sheet material 11 and being detachable from the support frames 21b, 22b, 221b, and 222b. The brackets 12 and 412 may be eliminated. In this case, when attaching and detaching the elastic sheet material 11, a ring that secures strength is provided around the hole through which the screw is inserted, and the screw is inserted through the ring so as to suppress damage to the sheet material. Also good.
Alternatively, the means for fixing the elastic sheet material to the support frame is not limited to the screw 400 and the weld nut 402 shown in Example 4, for example, a protrusion provided on one of the elastic sheet material side and the support frame side, Means for fitting into a hole provided on the other side, means for using a hook-and-loop fastener, means for teaching and fixing the elastic sheet material with a clip, and the like can be used.

  Moreover, in Examples 1-9, although the thing which can adjust a lock position to three steps, and the thing which made the lock position one place were shown as a lock member, the thing which can adjust a lock position continuously is used. May be. As such a lock member, as shown in FIG. 18, one of the leg rotation shafts 23 shown in the first embodiment and having a screw 101 and a nut 102 can be used. In this structure, after the screw 101 is loosened and both the leg members 21 and 22 are arbitrarily expanded, the screw 101 is fastened to the nut 102 so that the both leg members 21 and 22 cannot be relatively rotated. Thereby, the lock position can be adjusted steplessly.

In addition to using the lock member 25 shown in the first embodiment as an adjusting means for adjusting the distance and height between the two support frames in order to make it possible to change the degree of extension and the height of the elastic sheet material, It is possible to use a means for extending and contracting.
Specifically, as shown in FIG. 19, a pair of hollow legs 21a and 22a (not shown in FIG. 19) having the same shape as that shown in the first embodiment are formed on both support frames 21b and 22b (FIG. 19). The upper leg portion 111 is connected to the lower leg portion 112, and the lower leg portion 112 is slidably inserted into the upper leg portion 111. The leg upper member 111 is inserted into one of the plurality of lock holes 114 penetrating the leg upper member 111, and a leg lock member 113 is provided for restricting the leg upper member 111 from moving relative to the leg lower member 112 at a predetermined position. As a result, the height of the leg upper portion 111 can be changed, and the distance and height between the support frames 21b and 22b (not shown in FIG. 19) can be changed.

  In Examples 1 to 9, the support member and the support frame are shown as being formed of a hollow or solid rod-shaped member, but the shape of the support member is not limited to this, for example, Examples 8 and 9 shown in FIGS. 16 and 17 When the support frame has a round or square frame shape, a round or square tube whose upper side is opened by a plate of metal, resin, wood, etc. An elastic sheet material may be provided by using the support member as a support member and using the upper edge portion as a support frame. Or in what has a pair of support frame as shown in FIGS. 11-13, what formed the above-mentioned board in the cross-sectional substantially U-shape is good also as a support member.

A ball game training tool 11 elastic sheet material 20 support member 21 first leg member 21b first support frame 22 second leg member 22b second support frame 23 leg rotation shaft 25 lock member

Claims (4)

An elastic sheet material formed into a sheet shape by an elastic material;
A support frame that supports an edge portion of the elastic sheet material, and supports the elastic sheet material so that the elastic sheet material is stretched in the horizontal direction between the support frames arranged at a set height so that the elastic sheet material can expand and contract in the vertical direction. A member,
With
A ball game practice tool, wherein the elastic sheet material is set to an elastic force capable of rebounding a ball having a weight within a set range falling from above by a restoring force due to the expansion and contraction. The ball game training device according to claim 1,
The support frame includes a pair of opposing first support frame and second support frame,
The elastic sheet material is stretched between both support frames, and both side edges in a direction perpendicular to the stretching direction are in a free state not supported by the support frame. The ball practice tool according to claim 2,
The support member is configured such that a first leg member connected to the first support frame and a second leg member connected to the second support frame are connected to each other so as to be rotatable about a rotation shaft. Is formed so that the form can be changed into a folded state in which the elastic sheet material is loosened in close proximity and an expanded state in which the elastic sheet material is expanded by separating both support frames,
A ball game training tool, wherein a lock member is provided to restrict relative rotation between the first leg member and the second leg member and maintain the first leg member and the second leg member in an expanded state. In the ball game practice tool according to any one of claims 1 to 3,
The ball practice tool, wherein the elastic sheet material is detachably formed on the support frame.

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