JPH0425160Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for determining the swing speed of sporting goods, particularly golf clubs, bats, tennis rackets, and the like.

[Conventional technology]

Conventionally, when measuring the swing speed of a golf club, butt, or tennis racket, there are measurement devices that can be attached directly to the golf club, etc. For example, a spring inside the attached device measures the centrifugal force during the swing. The needle is extended by the spring and moves the needle, and after the end of the swing, the spring returns to its original state and the needle remains at the moved position to judge the maximum centrifugal force (head speed). Kaisho 60-7858, Jitsu Kaisho
60-32972) and those that generate wind noise due to air resistance during swinging (see 60-32972).
-30267), and those that have a propeller and calculate the measured value from the rotation of the propeller (Special Publication No. 51
-Refer to No. 10536).

[Problem that the invention attempts to solve]

However, the above-mentioned conventional devices measure the swing speed and calculate the flight distance, or simply determine whether the set swing speed has been reached; It is not possible to judge whether the maximum acceleration has been reached, that is, whether or not the swing is in the proper form.
For this reason, there was a problem in that the swing was won by relying on brute force, and the swing form was likely to collapse during measurement.

[Means for solving problems]

The present invention was developed in consideration of the above-mentioned conventional problems, and involves pivoting one end of a magnetic movable body to a mounting base that is fixedly attached to a golf club, etc., and allowing rotation of the movable body. A stopper is provided on one side of the direction in which the movable body is detachably attracted and has a magnet that generates an impact sound when the movable body comes into contact with the movable body, and on the other side of the rotational direction of the movable body, the movable body is detachably attracted. An adjusting body is provided which has a magnet and is movable in the longitudinal direction of the movable body from the pivot point side of the movable body, and the movable body is provided so as to be rotatable with a rotation width between the stopper and the adjusting body. The object of the present invention is to provide a swing speed determination device characterized by the following, thereby solving the conventional problems.

[Effect]

In this invention, centrifugal force or inertial force is applied to the movable body of the swing speed determination device attached to the head of a golf club, etc., and it is determined whether or not it overcomes the supporting force set by the slide adjustment of the adjusting body and moves away from the adjusting body. , determine the maximum speed during swing,
When the rotary body rotates and comes into contact with the stopper, an impact sound is generated, and it can be determined whether the top speed position is appropriate or not.

〔Example〕

Next, the present invention will be explained in detail based on an embodiment shown in FIGS. 1 to 4, in which the invention is implemented in a golf club head.

In the figure, reference numeral 1 denotes a swing speed determining device, which is housed in a recess in the head body B, with the upper surface A of the head serving as a mounting base 2. The swing speed determining device 1 includes the mounting base 2, a rod-shaped movable body 3 having magnetism, a stopper 4, and an adjusting body 5.
As shown in FIG. 2, the movable body 3 is rotatably mounted on the central part of the face side of the mounting base 2. A lever 30 coaxially connected to the movable body 3 is provided. Further, the adjustment body 5 has a magnet 50 to which the movable body 3 is detachably attracted,
It is movably provided in a long hole 20 that is horizontally elongated in a direction perpendicular to the face surface.
An indicator 51 displayed from a long hole on the surface of the mounting base 2
is provided to indicate a scale along the long hole. The stopper 4 has a magnet 40 to which the movable body 3 is detachably attracted, and is screwed to the tip end of the head. The free end side of the movable body 3 is located between the stopper 4 and the adjustment body 5 and is removably attracted to each of the magnets 40 and 50.
The movable body 3 is rotatably provided with a rotation range between the stopper 4 and the adjustment body 5.

Using the swing speed determination device with the above structure,
When determining the swing speed, use the lever 3 above.
0 to the "set" position of the mounting base 2, the movable body 3 in the recess is attracted to the magnet 50 of the adjustment body 5, and by sliding adjustment of the adjustment body, the movable body 3
The moving magnet 5 is set from the distance from the pivot joint side.
When the centrifugal force applied to the movable body 3 during swing becomes overwhelming due to the support force of 30
When the "CLEAR" position is reached, it is determined that the swing speed is equal to or higher than the speed (scale) indicated by the indicator hand 51. Further, when the supporting force of the adjustment body 5 is larger than the centrifugal force, that is, when the swing speed is less than the target set speed, the movable body 3 does not come off from the adjustment body 5 and the lever 30 remains in the "set" position. Based on the lever position, it can be determined that the swing speed (maximum speed) is less than the set speed. In addition, since the movable body 5 makes contact with the stopper 4 and makes a collision sound, it is possible to determine at what point in the swing trajectory the head speed has reached its maximum speed, and it is possible to determine the speed change of the head used as a model and the swing time. A comparison can also be made with the velocity change of the head.

Further, a long hole drilled in the mounting base may be located along the face side, and the adjusting body is provided in this long hole so that it can be moved freely and slide adjustment can be performed, and the stopper is installed in the expansion head body. A movable body is disposed on the side of the back surface of the mounting base corresponding to the exit portion and is attracted to the magnet of the adjustment body (at this time, the movable body is disposed approximately parallel to the face surface).
The suction support state may be maintained by balancing the inertial force applied during swing with the support force of the adjustment body, or the maximum speed and maximum speed position during swing may be determined by separating from the adjustment body.

The above-mentioned swing speed determination device uses the head surface as the mounting base and is hidden in the recess of the head body, so its shape is almost the same as that of a competitive golf club, and it can be used for practice swings just like swinging a competitive golf club. You can judge and practice your swing speed.

Although one embodiment shows a swing speed determining device that is hidden within the head body of a golf club, the present invention is not limited to this, and may be firmly attached to a golf club. It is also possible to attach it to a baseball bat or tennis racket.

[Effect of idea]

As explained above, according to the present invention, the movable body is removably attracted to each magnet, with the rotation width being between the adjustment body movably provided on the mounting base and the stopper fixedly installed. Since it is rotatably provided, the structure is extremely simple and easy to handle compared to conventional speed measuring devices.
In addition, the swing speed can be determined easily and quickly by simply attaching it directly to a golf club or butt and swinging, and the maximum swing speed device can be easily recognized by the collision sound, and the head speed can be set at any position in the swing trajectory. It is possible to judge whether the speed has been reached or exceeded, and it is also possible to compare the change in head speed that is used as a model with the change in head speed during swing, which is also useful for solidifying the swing form.
Furthermore, since the structure is simple, it can be made inexpensively and compactly, and even if it is attached and swung, there will be no hindrance to the swinging operation.
It has excellent practical effects.

[Brief explanation of the drawing]

Fig. 1 is a top view showing an embodiment of the swing speed determining device according to the present invention, Fig. 2 is a bottom view showing the same embodiment, and Fig. 3 is a cross section of a golf club head taken along the line in Fig. 1. FIG. 4 is an explanatory view showing the mounting state of one embodiment, and FIG. 4 is an explanatory view showing the lower surface of the golf club head partially cut away. DESCRIPTION OF SYMBOLS 1... Swing speed determination device, 2... Mounting base, 3... Movable body, 4... Stopper, 5... Adjusting body.

Claims (1)

[Claims for Utility Model Registration] (1) One end of a magnetic movable body is pivotally attached to a mounting base that is fixed to a golf club, etc., and the movable body is placed in one direction of rotation of the movable body. A stopper is provided that has a magnet that removably attracts the movable body and generates a collision sound when the movable body comes into contact with the movable body, and has a magnet that removably attracts the movable body on the other side of the rotating direction of the movable body. Swing speed determination characterized in that an adjustment body is provided that is movable in the longitudinal direction of the movable body from the pivoting part side, and the movable body is provided so as to be rotatable with a rotation width between the stopper and the adjustment body. Device. (2) The swing speed determining device according to claim 1, wherein the movable body is provided with a lever that is coaxially connected to the pivot portion and rotates on the other surface of the mounting base.