JP2005137396A - Swing practicing device for baseball bat, golf club or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the head speed while securing a proper timing in the golf clubs as well in a practicing device for acquiring the powerful swing of the baseball bats, tennis rackets or the like. <P>SOLUTION: The swing practicing device for the baseball bats, golf clubs, tennis rackets or the like comprises a grip, an elastic shaft, an air resistance generation part and a swing balance adjusting part. The air resistance generation part is made up of a cage-shaped frame and a net covering it and detachably mounted on the shaft. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a practice tool for making a swing speed, timing and the like strong and accurate when swinging a baseball bat, a golf club, a tennis racket or the like.

Conventionally, for example, the following inventions are known for such practice tools.
JP 2001-29525 A JP 2001-46576 A JP 2001-340506 A

For example, in the swing of a baseball bat, a strong hitting force is required at the same time that the bat is accurately aligned with the ball thrown by the pitcher. For this reason, as a general swing practice method, a method of repeatedly swinging a normal bat with a ring-shaped weight is used.
Another method is to use a relatively heavy practice bat and swing this heavy bat repeatedly, or swing this practice bat several times before actually standing at bat, The way to go to the bat with a bat is adopted.

  Moreover, in the hitting practice tool described in the above-mentioned JP-A-2001-29525, in order to recognize the ideal position where the bat catches the ball by hitting practice, a detecting means is provided in a specific area of the normal bat. This is a training tool for informing the user when the ball hits the detection means. That is, the means for detecting whether or not the ball is caught by the core of the bat at the time of swing can be mounted on a bat having the same structure as a normal bat.

  On the other hand, regarding the golf club, the invention described in Japanese Patent Laid-Open No. 2001-46576 has a normal golf club grip and a shortened shaft portion, and a cylindrical head is mounted on the tip of the shaft. A pair of laser modules is built in the head, and the footprint of the virtual club face at the time of swing is visually detected by the trajectory at the time of swing at the point where the two beams emitted from the laser module collide with the ground surface. Some of them correct the swing surface.

  Further, for example, as disclosed in Japanese Patent Application Laid-Open No. 2001-340506, the shaft tip of the golf club can be bent, and a separate bending preventing means is mounted so that the user can rotate the head with respect to the grip during the swing. There is a practice club that prevents bending of excessive force on the grip by bending the tip of the shaft when applying a force in the opposite direction of the torque, and adjusting this with a means for preventing bending. .

In the conventional swing exerciser as described above, although it is useful to some extent for acquiring the timing of the swing of the bat, club, racket, etc. It is difficult to perform training for improvement, and it is particularly unsuitable for training aiming at raising appropriate muscle strength to acquire a powerful swing.
In view of these points, the present invention provides a training tool for acquiring a powerful swing such as a baseball bat and a tennis racket, and can improve the head speed while ensuring proper timing even in a golf club. A swing exerciser that can be used.

The present invention is a swing training device for a baseball bat, golf club, or tennis racket, comprising a grip, an elastic shaft, an air resistance generating portion, and a swing balance adjusting portion, and the air resistance generating portion is a saddle-shaped frame. And a swing practicing tool characterized by being detachably attached to the shaft.
The shaft can be divided into two parts, and the swing balance adjusting unit is detachable by a necessary number of a plurality of thin disk-type weights, and a fixed base is detachable at the tip of the shaft. This is a swing practice tool.

According to the swing training device according to the present invention, the resistance can be freely adjusted by selecting the mesh of the net provided in the air resistance generating unit, so that the baseball bat, golf club, tennis racket, etc. In the swing practice, training for acquiring the swing rhythm and improving the swing speed can be performed, and the swing practice suitable for the ability of the practitioner can be easily performed.
Moreover, by making the bowl-shaped frame and the shaft detachable and further allowing the shaft to be divided into two parts, a swing training tool that is extremely easy to transport and assemble can be obtained.
Furthermore, by making the fixing base detachable, it can stand up even when not in use and can be easily installed at a practice place.
In particular, since the air resistance can be adjusted by the combination of the saddle-shaped frame and the net, it was possible to provide a practice tool that is extremely effective for swing force training.

An embodiment according to the present invention will be described with reference to FIGS.
FIG. 1 to FIG. 5 relate to a swing training tool for a baseball bat among the swing training tools according to the present invention. FIG. 1 is a cross-sectional view showing a skeleton structure of a baseball bat type swing practice tool 10, which includes a grip part 11, a resistance force generation part 12, and a swing balance adjustment part 13. Reference numeral 14 denotes a fixed base for placing the baseball bat type swing training device 10 in a state where the baseball bat type swing training tool 10 is stood when not in use.

The grip portion 11 includes a grip 15 and a shaft 16-1, and the grip 15 may be a wooden grip similar to a grip of a normal baseball bat, and is attached to one end of the shaft 16-1 like other metal bats. A grip material made of rubber or synthetic resin may be attached, but the thickness and length are preferably the same as the grip portion of a normal baseball bat.
Moreover, the shaft 16-1 is connected with the front end side of the grip 15, and generally the grip 15 is inserted into the end of the shaft 16-1. The shaft 16-1 is made of, for example, an elastic member made of metal or carbon graphite, and its elasticity is determined so as to generate an appropriate “scenario” at the time of swing.

The resistance generating portion 12 shows a state in which the frame 18 which is the most characteristic structure of the present invention is mounted on the shaft 16-2, and the frame 18 is perpendicular to the ring-shaped frame member 19 and the ring-shaped frame member. It consists of an oval frame member 20 that intersects, a shaft support ring 21, and a plurality of radial support frame members 22 that connect the shaft support ring 21 and the ring-shaped frame member 19.
Then, the plurality of radial support frame members 22 to 22 are fixed to the plurality of shaft support rings 21 to 21, and the ring-shaped frame members 19 to 19 and the oval frame members 20 to 20 are fixed to the front ends thereof. By doing so, a bowl-shaped frame 18 is formed. In practice, as will be described later, a resistance force due to air is generated by stretching a net material around the outer periphery of the frame 18.

  A shaft 16-2 is inserted into the shaft support rings 21 to 21 in the bowl-shaped frame 18, and the shaft 16-2 and the shaft 16-1 are connected to constitute a single shaft 16. The embodiment of the coupling means is of the type described later, and these shafts 16-1 and 16-2 can be formed as an integral shaft 16.

FIG. 2 shows a state in which the resistance generating section 12 is completed by using the frame 18 of the training tool 10 for the baseball bat shown in FIG. 1 and mounting the net 25 as an air resistor thereon. ing. Here, the net 25 may be a wire mesh of an appropriate mesh, or may be a net made of synthetic resin, but the point is that the air resistance at the time of swing can be changed by selecting the size of the mesh.
In such a baseball bat type swing training tool 10, the swing balance adjusting unit 13, which is the tip of the resistance generating unit 12 by air, increases or decreases the number of thin disc weights 23 to 23 that are adjustment weights. As a result, the swing balance is adjusted, and the grip 15 is held and the swing is repeatedly practiced.
During practice, a fixed base 14 (to be described later) is removed.

3 to 5 describe in detail an example of the structure of the base 18 bat type swing training device 10, particularly the frame 18 portion.
FIG. 3 shows an AA cross section in FIG. 1, and the oval frame members 20 to 20 and the radial support frame members 22 to 22 fixed to the most distal portion and the next shaft support rings 21 and 21 are shown. It is shown. A thin disk-type weight 23 and a disk which is a stand fixing base 14 when not in use are mounted on the distal end side of the most advanced shaft support ring 21 as will be described later with reference to FIG. In addition, although this fixed base 14 is comprised with the iron disk which has a considerable weight, the shape is arbitrary.

  FIG. 4 shows a structure in which the shaft 16-1 in the grip portion 11 shown in FIG. 1 and the shaft 16-2 in the frame 18 are detachable. As shown in the figure, these connecting portions are attached and detached by providing, for example, a male threaded portion 16-3 at the end of one shaft 16-1 and a female threaded portion 16-4 at the end of the other shaft 16-2. It has a free configuration. However, these shafts 16-1 and 16-2 may be configured as a single shaft 16, and the shaft itself may not be divided into two. Reference numeral 24 denotes a stopper, which prevents the frame 18 from moving in the direction of the grip 15 when the shaft support ring 21 of the frame 18 is inserted. The stopper 24 is fixed in advance to an appropriate position of the shaft 16-1.

FIG. 5 shows the structure of the shaft 16-2 and the tip of the frame 18 of the baseball bat-type swing practice tool 10 in FIG. A shaft support ring 21 on the distal end side of the frame 18 is inserted into the end portion of the shaft 16-2 on the distal end side of the detachable shaft, and a thin disk type that is a plurality of adjustment weights on the distal end side. The weights 23 to 23 are inserted and fixed, and the fixing base 14 is detachably screwed to the end of the shaft 16-2.
In addition, when using this practice tool, the frame 18 and the thin disc weights 23 to 23 as the adjustment weights are fixed by using nuts (see FIG. 11) instead of the fixing base 14.

6 and 7 show the structure of the golf club type swing practice tool 30 of the present invention. FIG. 6 corresponds to FIG. 1 relating to the baseball bat-type swing practice tool 10, and the basic structure is substantially the same. That is, the golf club type swing practice tool 30 has a grip portion 31, a resistance force generating portion 32, and a swing balance adjusting portion 33, and a grip 35, a shaft 36, and a detachable frame 38 are provided on the shaft 36. It is what
Further, the shaft 36 may be a single shaft, similar to the shaft 16 in the baseball bat type training tool, or may be divided into two parts in the middle and connectable. In the case of a golf club type swing training device, the shaft has elasticity that is considerably higher than that of an actual club.

Similarly, the frame 38 includes shaft support rings 41 to 41 through which the shaft 36 is inserted, a large number of radial support frame members 42 to 42 fixed to the support ring 41, and ends of the radial support frame members 42. Ring-shaped frame members 39 to 39 fixed to the portion, and a plurality of oval-shaped frame members 40 to 40, and these oval-shaped frame members 40 to 40 are the ring-shaped frame members 39 to 39, respectively. And it is fixed at each crossing part.
Accordingly, a frame 38 that is substantially the same as the frame 18 described in FIG. 1 is formed. However, the frame 38 in the golf club type exercise device 30 is much smaller than that of the baseball bat type exercise device, and The generated air resistance is also reduced.
The structure of the swing balance adjusting unit 33 and the fixed base 34 is basically the same as that shown in FIG. 1, but a golf club-type training tool can be finely adjusted.

FIG. 7 shows a state in which a net similar to that of FIG. 2 is attached to the skeleton of the practice tool shown in FIG. In this case as well, the material of the net 45 is appropriate as in FIG. 2, but the timing is more important than the swing force in the swing of the golf club. The occurrence of is considerably reduced. The total length of the training tool 30 including the grip 35 and the shaft 36 is substantially equal to that of a normal club.
Furthermore, the code | symbol 37 is a stopper similar to the stopper 24 shown in FIG.

FIGS. 8 to 11 show other parts of the baseball bat type swing training tool shown in FIGS. 3 to 5, for example, the shaft and the frame, the divided shafts, the swing balance adjusting part, and the like. An example is shown.
In FIG. 8, the shaft 16 is divided into shafts 16-1 and 16-2, but in this embodiment, male screws are provided at the ends of the shafts 16-1 and 16-2, and end portions of the frame 18 are provided. These shafts and the frame can be attached to and detached from each other by providing a female screw hole penetrating the shaft support ring 21 integrated with the shaft.

  FIG. 9 also shows another embodiment in the configuration of the connecting portion of the shafts 16-1 and 16-2. The shaft 16-2 is integrated with the shaft support ring 21, that is, the oval frame member 20, the shaft support ring 21, the radial support frame member 22, and the shaft 16-2, which are members constituting the frame 18, are preliminarily connected. The frame 18 and the shaft 16-1 are configured so as to be detachable.

  FIG. 10 shows the members constituting the frame 18 of the type shown in FIG. 8, the shaft 16-2, and the structure of the tip side thereof. The shaft support rings 21 and 21 are respectively coupled to the radial support frame members 22 to 22 and the oval frame members 20 to 20, and the end portion of the shaft 16-2 is inserted into the frame 18 having such a structure. At the same time, the number of the thin disc weights 23 and 23 is adjusted and further fixed by the nut 26. The stand fixing base 14 can be screwed to the foremost end of the shaft 16-2, and when the swing training tool of the present invention is not used, the fixing base 14 is mounted and the training tool is set up in a standing state. can do.

FIG. 11 shows another embodiment relating to the structure of the portion shown in FIG. That is, the configuration of the frame members constituting the frame 18 is the same, but the mounting formats of the thin disk weights 23 and 23 and the fixed base 14 are different.
In the figure, a female screw hole 16-5 is provided on the end surface of the shaft 16-2, and the male screw protrusions 23-1 and 23-1 provided in the thin disc weights 23 to 23 are respectively connected to the female screw hole 16. −5 and a female screw hole 23-2 provided on the back surface of the weight 23 are sequentially screwed and coupled. Further, the fixed base 14 is also provided with a male screw protrusion 14-1, and when the swing training tool is not used, the protrusion 14-1 is screwed into the female screw hole 23-2 of the weight 23 and coupled. is there.
Note that the above-described net 25 is attached and fixed to the frame 18 in each of the above embodiments.

  Next, although not particularly shown, a tennis racket swing practice tool will be described. Even in the case of a tennis racket, the overall structure of the training tool is substantially the same as that of other training tools, but the structure of the resistance generating portion is slightly different. In other words, the tennis racket is originally flat, and the air resistance changes depending on the angle formed by the racket with respect to the swing direction. Therefore, the outer shape of the resistance generating portion in the swing training tool can be changed, for example, a frame having a flat cross-sectional shape than the frame shape of the baseball bat type training tool or the golf club type training tool can be used. Can also be a substantially hemispherical frame. The configuration of the other parts can be made substantially the same as the baseball bat type or golf club type swing practice tool.

It is a longitudinal cross-sectional view of the bat type swing practice tool for baseball. It is a side view of a bat type swing practice tool for baseball. It is AA sectional drawing of FIG. It is structure explanatory drawing of the grip part of FIG. 1, a shaft connection part, and a flame | frame. It is structure explanatory drawing of the swing balance adjustment part of FIG. It is a longitudinal cross-sectional view of a golf club type swing practice tool. It is a side view of a golf club type swing practice tool. It is explanatory drawing which shows the other Example of a shaft and a frame structure. It is explanatory drawing which shows the other Example of a shaft and a frame structure. It is explanatory drawing of the other Example regarding the structure of a swing balance adjustment part. It is explanatory drawing of the other Example regarding the structure of a swing balance adjustment part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Baseball bat type swing training tool 11 Grip part 12, 32 Resistance generating part 13, 33 Swing balance adjustment part 14, 34 Fixing base 15, 35 Grip 16, 16-1, 16-2, 36 Shaft 18, 38 Frame 19, 39 Ring-shaped frame material 20, 40 Oval frame material 21, 41 Shaft support ring 22, 42 Radial support frame material 23 Thin disk type weight 24, 37 Stopper 25 Net 30 Golf club type swing exercise tool

Claims (4)

A swing training device for a baseball bat, golf club, or tennis racket, comprising a grip, an elastic shaft, an air resistance generator, and a swing balance adjuster. A swing practice tool comprising a covering net and detachable from the shaft. The swing practice tool according to claim 1, wherein the shaft can be divided into two. The swing exerciser according to claim 1 or 2, wherein the swing balance adjusting unit is detachable by a necessary number of a plurality of thin disk-type weights. The swing training tool according to any one of claims 1 to 3, wherein a fixed base is detachably attached to a tip portion of the shaft.

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