JP2020006149A - Bat swing training machine - Google Patents

Abstract

To provide a bat swing training machine in which a striking part by a bat is constituted of a rubber plate, which can obtain a feeling and preferable striking sound similar to those which are obtained when a ball is actually hit by a core of a bat, when a user correctly strikes an impact point in a state where swing force is concentrated, thereby enabling a user to learn a correct bat swing.SOLUTION: A bat swing training machine 1 comprises: a stand 2; an arm support tool 3; a height adjustment mechanism 4 for adjusting a stationary height position of the arm support tool; an upper support arm 5 and a lower support arm 6 supported by the arm support tool; an upper rubber plate 7 attached to the upper support arm 5; and a lower rubber plate 8 attached to the lower support arm 6. The upper rubber plate 7 and lower rubber plate 8 are overlapped and superposed in a fixed length range to constitute a striking part 11 by a bat.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bat swing training machine for baseball and softball that can be used indoors in a corner of a playground, in a small open space, or indoors, and more particularly, a bat swing developed for the purpose of learning the correct bat swing without using a ball. About training machine.

  Ideally, the practice of hitting the ball with the bat's core should be practiced in a combat style, but the practice of hitting the thrown ball is limited in the number of people and places in which it can be practiced. .

  Practices such as tee batting and toss batting require a large number of balls, and also require the labor of setting a ball on the tee and the recovery of struck balls, so that efficient training cannot be performed within a limited time. Toss batting requires the help of others.

  Therefore, a swing practice device (tool) that can practice bat swing alone without using a ball and can judge by sound whether a bat accurately captures an impact point has been proposed by Patent Documents 1 and 2 below. .

  Japanese Patent Application Laid-Open Publication No. H11-163873 proposes a swing exercise tool that can confirm whether a bat swing can be performed as a basic.

  In the swing training device of Patent Document 1, a flat rubber plate is attached to an angled pillar erected on the tire, and the rubber plate is used as an impact point to strike with a swing bat. Is what you do.

  The swing training tool disclosed in Patent Literature 2 attaches an elastically deformable synthetic resin hitting member to a vertical column supported by a support in a horizontally oriented and cantilevered state, and impacts the hitting member. A hit is made with a bat, and the quality of the swing is determined based on the difference in the hitting sound, similarly to the swing practice device of Patent Document 1.

  In the swing training tool of Patent Document 3, an upper rubber pipe in a hanging posture and a lower rubber pipe in a standing posture are attached to a standing frame so as to face each other, and a gap is formed between the upper rubber pipe and the lower rubber pipe as a punching point.

  The gap is a small gap through which the bat can pass, and a bat that passes through an accurate track passes through the gap in a non-contact manner with the rubber pipe, and a bat whose track is shifted hits the upper or lower rubber pipe. It has become.

  In the swing training tool of Patent Document 3, two gaps are provided at intervals with a punching point, and the bat that has been correctly swung has two punching points that are not in contact with the rubber pipe. Go through.

JP 2007-190320 A JP-A-9-75492 JP 2005-246020 A

  In the swing training device of Patent Document 1, since the impact point is formed of one rubber plate, even if the hit point is slightly deviated from the impact point or the force of the swing is not concentrated on the impact point. The bat swings by deforming the rubber plate. Therefore, the feeling when swinging through is different from when the ball is actually hit.

  Also, it is difficult to understand the difference in the hitting sound between when the bat accurately captures the impact point and when the bat slightly deviates from the impact point, and the judgment of the swing is rough, making it difficult to obtain an ideal swing.

  In addition, since the angle pillar with the rubber plate as the impact point is installed upright in the center of the tire, the user needs to stand at a position avoiding the tire, and the horizontal direction from the holding position to the rubber plate Varies depending on the size of the tire.

  Therefore, it is difficult to perform batting practice on the assumption of an in-course ball with a device using a large tire, and there is a possibility that the support stability of the angle column is likely to be impaired with a device using a small tire.

  Since the swinging exercise tool disclosed in Patent Document 2 is a stand having a support having a pipe support, batting practice assuming an in-course ball can be performed without difficulty, and the support stability of a member to be hit can be secured without lack.

  However, this also hits a single hitting member, so that it is difficult to understand the difference in feel and sound when the hitting member is accurately captured by the bat core and when it is not.

  The hitting member is horizontally arranged in a cantilevered state, and the free end (tip) of the hitting member is hit with a bat. Since it is located at a position deviated by 10 cm, the free end of the member to be hit cannot be hit with the bat core, so that it is impossible to practice faithfully on the basics of hitting with the bat core.

  On the other hand, in the swing training tool disclosed in Patent Document 3, when the bat is correctly swung, the bat passes through two punching points without contact with the rubber pipe. Therefore, it is known whether the swing trajectory is correct.

  However, it is not clear whether the impact point was captured by the bat core, the swing was weak, or the power of the swing was concentrated on the beating part, which is important in swing practice, because there is nothing to judge. .

  According to the present invention, when the impact point is accurately hit in a state where the power of the swing is concentrated, the hitting portion of the bat is formed of a rubber plate, and the rubber plate takes advantage of the characteristics of the bat swing training machine held on the stand. Another object of the present invention is to provide a feeling of hitting a ball with a bat core and a good hitting sound so that a correct bat swing can be obtained.

In order to solve the above problems, in the present invention, a stand having an upright support, an arm support mounted on the support so as to be vertically displaceable, and a height for adjusting a fixed height position of the arm support are provided. An adjusting mechanism, a pair of cantilever upper and lower support arms that are horizontally extended to and fixed to the arm support, and a strip-shaped hanging and attached to the extended end side of the upper support arm. An upper rubber plate, comprising a strip-shaped lower rubber plate attached to the overhanging end of the lower support arm so as to stand upright,
Provided is a bat swing training machine in which the upper rubber plate and the lower rubber plate are overlapped with each other in a certain length range, and the overlap portion is configured as a hitting portion by a swung bat.

  The upper rubber plate and the lower rubber plate preferably have the same length, plate thickness, width, and hardness of the material rubber from the support point to the free end.

  The length from the support point to the free end of the upper rubber plate and the lower rubber plate, the plate thickness, the width, the hardness of the material rubber and the length of the overlapping portion (overlap amount) are determined by the person using the training machine (adult, It can be set arbitrarily in consideration of the physique and physical strength of children, men and women).

  In this bat swing practice machine, a mark indicating the impact point (the shape of the mark is not particularly limited) can be attached to the overlapped portion of the upper rubber plate and the lower rubber plate.

  Also, the training machine can be made portable by including a caster with a stopper in the stand.

  The center of the support points of both rubber plates is shifted in the thickness direction until the positions of one surface of one rubber plate and the other surface of the other rubber plate are aligned, and the upper rubber plate and the lower rubber plate are free ends without bending. It is preferable that the center of the support point of each rubber plate is aligned on a vertical plane, and the free end side may be overlapped by a required length by elastically deforming the longitudinal middle.

  The bat swing training machine of the present invention hits with the bat that swings with the impact point at the midpoint in the height direction of the overlapped portion of the upper rubber plate and the lower rubber plate.

  At this time, if the swing is weakened and the bat accurately captures the impact point, and the power of the swing is concentrated on the beating portion, the bat elastically deforms the upper rubber plate and the lower rubber plate Pass through the board installation part without any discomfort (smoothly swing through).

  In addition, the sound when hitting the impact point becomes clearer.

  On the other hand, if the point outside the impact point is hit or the swing force is not concentrated on the hitting part, the bat will feel uncomfortable when passing through the rubber plate installation part, It can be awkward. The sound when striking the rubber plate is not clear.

  This is because, when a point outside the impact point is hit, the force to bend both rubber plates against the upper and lower rubber plates is not evenly applied, and the elastic deformation of the upper and lower rubber plates It is thought that this may be due to a situation in which the friction of the overlapped portion is not reduced because of different types.

  As shown in FIG. 10 (a), when the bat correctly hits an intermediate point (impact point) in the height direction of the overlapped portion of the upper rubber plate 7 and the lower rubber plate 8 with the swing force concentrated (the arrow indicates The upper rubber plate 7 and the lower rubber plate 8 are similarly elastically deformed by receiving a bending force having almost no condition difference, and the contact of the lower rubber plate 8 with the upper rubber plate 7 is close to the line contact. The condition is reached and the friction at the overlap is reduced. For this reason, the bat swings out with low resistance, and the feel and the hitting sound are good.

  On the other hand, when the hit location is shifted below the impact point as shown in FIG. 10B, the lower rubber plate 8 is bent so as to be entangled with the bat, and the upper rubber plate 7 and the lower rubber plate 8 are free. The end faces are in wide surface contact, which increases the frictional force at the contact portions.

  Also, when the hit location is shifted above the impact point as shown in FIG. 10 (c), the free end side of the lower rubber plate 8 is pressed against the upper rubber plate 7, and also in this case, The frictional force at the contact portion of the rubber plate 8 increases.

  It is considered that the frictional force hinders the smooth elastic deformation of the upper rubber plate 7 and the lower rubber plate 8, so that the bat does not swing smoothly and the hitting sound is deteriorated.

  ADVANTAGE OF THE INVENTION According to the training machine of this invention, when a bat swings through a rubber board installation part smoothly, the feeling which hit the ball with the core of the bat is obtained, and by learning the swing which can obtain the feeling, , You can do the correct bat swing.

  With the training machine of the present invention, the upper and lower rubber plates are beaten and elastically deformed (bent) so that the bat swings out. Therefore, unlike the swing training in which the waste tire is directly beaten, there is no possibility of damaging the wrist. Extremely small.

  The length of the upper rubber plate and the lower rubber plate from the support point to the free end, the thickness, the width, and the hardness of the material rubber were all equal, and the upper rubber plate and the lower rubber plate were beaten under the same conditions. It is easy to make the elastic deformation of both rubber plates uniform.

  In addition, in the case where a mark indicating the impact point is attached to the hitting portion, the bat can be swung toward the mark, and the usability of the training machine is improved.

It is a perspective view showing one form of a bat swing training machine of the present invention. It is a side view of the bat swing training machine of FIG. It is a front view of the bat swing training machine of FIG. It is a top view which shows a part of bat swing training machine of FIG. FIG. 3 is an enlarged sectional view taken along line XX of FIG. 2. It is a front view which shows the other example of the attachment state with respect to the support arm of the upper rubber plate and the lower rubber plate. It is a side view which shows the principal part of the portable stand which has the caster with a stopper. It is a top view which shows the modification of the stand part of a stand. It is a top view which shows the other modification of the stand part of a stand. (A) is an explanatory view of the deformed state of the upper and lower rubber plates when the impact point is accurately hit with the bat, and (b) is the upper and lower rubber when the batted portion by the bat is shifted downward from the impact point. FIG. 3C is an explanatory view of a deformed state of the plate, and FIG. 4C is an explanatory view of a deformed state of the upper and lower rubber plates when the hitting portion by the bat is shifted upward from the impact point. It is a perspective view showing other forms of a bat swing training machine of the present invention. It is sectional drawing which shows the height adjustment mechanism of the bat swing training machine of FIG.

  Hereinafter, an embodiment of a bat swing training machine according to the present invention will be described with reference to FIGS.

  The bat swing training machine 1 shown in FIGS. 1 to 5 includes a stand 2 having a base 2a and an upright support 2b, an arm support 3 mounted on the support 2b so as to be vertically displaceable, and the arm support 3 A height adjusting mechanism 4 for adjusting a fixing position in the height direction with respect to the support 2b, a pair of cantilever upper support arms 5 and a lower support arm 6 which are horizontally extended and fixed to the arm support 3; , A pair of flat upper and lower rubber plates 7 and 8 fixed to the upper and lower support arms 5 and 6, respectively.

  The stand 2 includes a base 2a and a support 2b erected on the base 2a. The base 2a of the exemplary stand 2 is a flat disk, and the base 2a is a combination of a metal square pipe or channel steel so that the plan view has an H shape (see FIG. 8). Further, a combination in a square frame shape (see FIG. 9) is also conceivable.

  The stand 2 may be a portable type provided with a plurality of casters 2c with stoppers, which are commercially available, as shown in FIG. At least three casters 2c with stoppers are provided at positions where the balance of the training machine is maintained.

  The support 2b may be a round pipe, but the illustrated square pipe is preferable because the arm support 3 and the upper support arm 5 and the lower support arm 6 supported by the same are easily detented.

  The roots of the upper support arm 5 and the lower support arm 6 are fixed to an arm support 3 formed of a tube having a rectangular cross section and fitted to the outer periphery of the column 2b so as to be vertically movable. As shown in FIG. 11, the arm support 3 is vertically divided into two parts, and the upper support arm 5 and the lower support arm 6 are individually attached to each of the divided arm supports 3-1 and 3-2. Good.

  The illustrated upper support arm 5 and lower support arm 6 are formed by integrating a vertically extending rib 5b and an upright rib 6b, each of which extends over substantially the entire length of the arm, on opposing surfaces of horizontal flat plates 5a, 6a arranged in parallel. Although the provided one is used, a support arm formed of an angle material or the like is also conceivable.

  The distance between the upper support arm 5 and the lower support arm 6, which are arranged in parallel in a cantilevered posture, is determined by the length of the upper rubber plate 7 and the lower rubber plate 8 to be used.

  The dimension h (see FIG. 2) from the upper surface of the upper support arm 5 to the lower surface of the lower support arm 6 of the prototype training machine is 520 mm, but is not limited to this.

  The overall height H of the stand 2 (see also FIG. 2) is about 150 cm, but the upper support arm 5 and the lower support arm 6 are moved up and down together with the arm support 3 so that the upper rubber plate 7 and the lower rubber It is sufficient that the impact point set at the overlapping portion of the plate 8 can be set at a predetermined height position (within the strike zone), and the height of the stand 2 is not particularly limited.

  The height adjustment mechanism 4 of the bat swing training machine 1 shown in FIGS. 1 to 5 includes the arm support 3 and the small holes 4a formed in the support 2b at a constant pitch (for example, 40 mm pitch) (see FIGS. 2) and set screws (thumb screws in the figure) 4b screwed to the arm support 3.

  The set screw 4b is a screw for fixing the arm support 3 at the set height position, and the tip is inserted into the small hole 4a. An auxiliary plate 4c (see FIGS. 4 and 5) having an appropriate thickness for expanding the support area of the set screw 4b is fixed to the inner surface of the arm support 3, and the screw provided on the auxiliary plate 4c is fixed. A set screw 4b is threaded through the hole.

  The small hole 4a and the set screw 4b may be provided on the surface (back surface) or side surface of the column 2b opposite to the side where the support arm is provided.

  As shown in FIG. 12, the height adjusting mechanism 4 employs a column 2b having a vertically long T-slot 4d on a side surface, and a nut 4e retained on the column 2b is vertically movably inserted into the T-slot 4d. Then, a bolt 4f with a knob passed through the arm support 3 (split arm support 3-1 or 3-2) is screwed into the nut 4e whose height can be changed steplessly. Good.

The upper rubber plate 7 is fixed to the upper support arm 5 with its upper end sandwiched between the rib 5b and the holding plate 9. The holding plate 9 is detachably attached to the rib 5b using a screw and a nut 10.

  The lower rubber plate 8 is fixed to the lower support arm 6 with its lower end sandwiched between the rib 6 b and the holding plate 9. The holding plate 9 is detachably attached to the rib 6b using screws and nuts 10 in the same manner as the one to which the upper rubber plate 7 is fixed.

  As shown in FIG. 6, the upper rubber plate 7 and the lower rubber plate 8 are arranged such that the center of each support point (the center in the thickness direction) is aligned on a vertical plane, and the free end side is elastically deformed in the longitudinal direction. The required length can be overlapped, but rather, as shown in FIG. 3, it is shifted from the position with respect to the center of each support point in the thickness direction by an amount equivalent to １ ／ of the thickness (this is a It is possible to shift the setting points of 5b and 6b), and it is preferable to overlap the free ends without bending.

  The hardness of the rubber material of the upper rubber plate 7 and the lower rubber plate 8 is 50 to 60 degrees, the thickness t of both rubber plates (see FIGS. 3 and 6) is 8 to 12 mm, and the hardness of the upper rubber plate 7 and the lower rubber plate 8 is The overlap length Oa (see FIGS. 2 and 3) is 4 to 15 cm, the width w of both rubber plates (see FIG. 2) is 80 to 100 mm, and the length l of both rubber plates (see FIG. 3) is 250 to 350 mm. A range is considered appropriate.

  A particularly preferable range of the overlap length Oa of the upper rubber plate 7 and the lower rubber plate 8 is as follows: when a rubber plate having a rubber hardness of 55 degrees, a thickness t of 10 mm, a width w of 100 mm, and a length l of 300 mm is used. It is about 4 to 10 cm for training machines for adults and about 7 to 12 cm for training machines for adults.

  The upper rubber plate 7 and the lower rubber plate 8 of the illustrated bat swing training machine 1 are formed of recycled rubber of a waste tire having a hardness of about 55 degrees, and the recycled rubber plate is used as an adult training machine. In the above, a strip-shaped flat plate having a thickness t = 10 mm, a width w = 100 mm, and a length 1 = 300 mm was formed, and the upper rubber plate 7 and the lower rubber plate 8 were overlapped with each other in a length range of 7 cm to 10 cm. Those were particularly suitable.

  In the training machines for children and women, the hardness of the material rubber is reduced, the thickness and width of the upper rubber plate 7 and the lower rubber plate 8 are reduced, and the length of the upper rubber plate 7 and the lower rubber plate 8 is increased. For example, the resistance value when the bat hits the overlapped portion of the rubber plate and swings out may be set to be smaller than the resistance value of the training machine for adult men.

  The overlapping portion on the free end side of the upper rubber plate 7 and the lower rubber plate 8 is a hitting portion 11 (see FIGS. 1 to 3). The hitting portion 11 can be provided with a mark 12 (see FIGS. 1 and 2) indicating an impact point.

  In the illustrated bat swing training machine 1, the lower rubber plate 8 is stacked on the front surface of the upper rubber plate 7 and directly hit with a bat, but the upper rubber plate 7 is stacked on the front surface of the lower rubber plate 8. And may be combined so as to be directly hit with a bat.

  The bat swing trainer 1 configured as described above changes the position where the user holding the bat stands and the height position of the rubber plate, so that the bat assumes the outer angle, the inner angle, the height, the lower, and the middle ball. You can practice swinging.

  Also, when the impact point set at the overlapping portion on the free end side of the upper rubber plate 7 and the lower rubber plate 8 is accurately hit with the swing force concentrated, the bat smoothly swings the rubber plate installation portion. A feeling as if the ball was actually hit with the core of the bat and a good hitting sound are obtained, so that a correct bat swing can be obtained.

The feel when the bat swings smoothly through the rubber plate setting part is similar to the feeling when the bales are cut with a Japanese sword. With a Japanese sword, the sword is swung correctly when it is cut into the sword, and the sword will not be cut unless the swinging force is concentrated on one point.

  The inventor is proficient in the theory and experience of bat swing, and also uses a Japanese sword to cut bales as part of bat swing practice.

  In the process of developing a training machine that allows many people to learn the correct bat swing, two rubber plates are stacked, an impact point is set in the overlapping portion, and the bat is hit accurately with a bat. The bat swing training machine of the present invention was completed by knowing that the feeling of hitting the ball with the core was very similar to the feeling of cutting the bales with a Japanese sword.

DESCRIPTION OF SYMBOLS 1 Bat swing training machine 2 Stand 2a Base part 2b Support 2c Caster with stopper 3 Arm support 3-1 Split arm support 3-2 Split arm support 4 Height adjustment mechanism 4a Small hole 4b Set screw 4c Auxiliary plate 4d T Slot 4e Nut 4f Bolt with knob 5 Upper support arm 5a Flat plate 5b Rib 6 Lower support arm 6a Flat plate 6b Rib 7 Upper rubber plate 8 Lower rubber plate 9 Presser plate 10 Screw and nut 11 Tapping unit 12 Mark indicating impact point t Rubber plate The thickness w of the rubber plate l The length of the rubber plate Oa The overlapping length of the upper and lower rubber plates

Claims (4)

A stand (2) having an upright support (2b), an arm support (3) mounted on the support (2b) so as to be vertically displaceable, and a fixed height position of the arm support (3) are adjusted. A height adjusting mechanism (4), a pair of cantilever-supported upper support arms (5) and lower support arms (6) which are horizontally extended and fixed to the arm support (3), and the upper support arm (5) A strip-shaped upper rubber plate (7) hanging down from the overhanging end side, and a strip-shaped lower rubber mounted upright on the overhanging end side of the lower support arm (6). A plate (8),
A bat swing training machine in which the upper rubber plate (7) and the lower rubber plate (8) are overlapped so as to overlap in a certain length range, and the overlapped portion is configured as a hitting portion (11) by a swung bat. .   The bat swing training machine according to claim 1, wherein the upper rubber plate (7) and the lower rubber plate (8) have the same length, plate thickness, width, and hardness of the material rubber from the support point to the free end. .   The bat swing training machine according to claim 1 or 2, wherein a mark (12) indicating an impact point is attached to the hitting portion (11).   The bat swing training machine according to any one of claims 1 to 3, wherein the stand (2) is configured as a portable stand including a caster with a stopper (2c).

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