JPH0453813Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a baseball strike/ball determination device that can automatically determine whether a pitch thrown by a pitcher is a strike or a ball. It is something.

[Prior Art] Conventionally, there are display devices at batting centers that display how many kilometers the pitcher threw a ball, but
There was no automatic judgment device to determine whether it was a strike or a ball.

Therefore, at a batting center, it is possible to understand how many kilograms the ball you threw hit, but it is not possible to judge for yourself whether the ball you threw is a strike or a ball. I was unable to clearly recognize the strike range.

However, while it is important for pitchers to be aware of the speed of the pitch they throw, it is also important for pitchers to accurately recognize whether the pitch they are throwing is a strike or a ball, and to control it. It is also extremely important to add .

However, conventionally, there has been no determination device that satisfies such requirements.

[Purpose of the invention] Thus, the present invention was devised to address the above-mentioned conventional problems, and is a method for automatically determining whether a ball thrown by a pitcher at a batting center or the like is a strike or a ball. It is an object of the present invention to provide a baseball strike and ball determination device that can accurately and quickly determine baseball strikes and balls.

[Structure of the invention] The baseball strike/ball judgment device according to the invention is equipped with three sensors each having a detection means that spreads at an angle of 45 degrees, and has a detection means on the home base based on the overlapping range of the detection means of the three sensors. This is a strike/ball judging device for baseball that determines the strike range, and the left or right end of the detection means emitted from the first sensor passes along the leading edge of the home plate, and the right or left end is The first sensor is arranged so that it passes along a first oblique side behind the home base, and the right end of the detection means emitted from the second sensor passes along a second oblique side behind the home base, and The second sensor is arranged so that its left end coincides with and passes through the first side of the home base, and the right end of the detection means emitted from the third sensor coincides with and passes through the second side of the home base; The third sensor is arranged so that its left end coincides with and passes through the first oblique side behind the home base.

[Embodiments of the invention] The present invention will be described below based on embodiments shown in the drawings.

FIG. 1 is a schematic diagram showing the outline of a baseball strike and ball determining device according to the present invention.

In FIG. 1, reference numeral 1 indicates a first sensor.
The first sensor has sensing means extending at an angle of 45 degrees.

This detection means is not limited in any way, but in this embodiment, ultrasonic waves or the like are used.

Further, the first sensor 1 is installed on the right side or the left side when facing the home base 2. It is assumed that the detection means 3 emitted from the first sensor 1 is allowed to pass through such that the left end 4 or right end 6 thereof coincides with the leading edge 5 of the home base 2. Further, it is assumed that the right end 6 or the left end 4 of the detection means 3 emitted from the first sensor 1 is allowed to pass through so that it coincides with the rear first oblique side 7 or the rear second oblique side 11 of the home base 2. Therefore, the first sensor 1 is installed so as to be in such a state.

Next, reference numeral 8 indicates a second sensor. The second sensor 8 is installed at the rear right side of the home base 2, as shown in FIG. The right end 10 of the detection means 9 emitted from this second sensor 8
is the second oblique side 11 behind the home base 2, and its left end 12 is aligned with the first side 13 of the home base 2.
Assume that a sensor 8 is installed.

Next, reference numeral 14 indicates a third sensor. The third
The sensor 14 is installed on the rear left side of the home base 2, as shown in FIG. The right end 16 of the detection means 15 emitted from the third sensor 14 coincides with the second side 17 of the home base 2, and the left end 18 of the detection means 15 passes through the second side 17 of the home base 2.
The third sensor 14 is installed so that the light passes along the oblique side 7.

In this way, the first sensor 1, the second sensor 8, the third sensor
Detection means 3, 9, 15 emitted from the sensor 14, respectively
The strike range of the home base 2 is determined by the polymerization range of . By the way, the dimensions of the home base 2 determined by the standard are: the tip side 5 is 432 mm, the first side 13 and the second side 17 are 216 mm.
mm, and the rear first oblique side 7 and the rear second oblique side 11 are each 305 mm. Therefore, the left end 4 of the detection means 3 emitted by the first sensor 1 is the leading edge 5 of the home base 2.
The right end 6 of the detection means 3
In order for the first sensor 1 to pass so that it coincides with the first hypotenuse 7 behind the home base 2, the first sensor 1 is installed on the right side at a distance of 216 mm, which is the same dimension as the first side 13 of the home base 2 (216 mm). There must be.

Further, the detection means 3 emitted from the first sensor 1 is passed so that the right end 6 of the detection means 3 is aligned with the leading edge 5 of the home base 2, and the left end 4 of the detection means 3 is connected to the home base 2.
In order to pass the sensor so that it coincides with the rear second oblique side 11, the first sensor 1 must be spaced 216 mm apart, which is the same dimension as the first side 13 of the home base 2 (216 mm), as shown by the broken line in FIG. Therefore, it must be installed towards the left side.

Next, regarding the second sensor 8, the right end 10 of the detection means 9 of the second sensor 8 is passed through so that it coincides with the second oblique side 11 behind the home base 2,
In order to pass the left end 12 of the home base 2 so that it coincides with the first side 13 of the home base 2, it is necessary to The second sensor 8 must be installed so that the triangle formed by the above is an isosceles triangle. Therefore, the length from the second sensor 8 to the rear end of the first side 13 of the home base 2 is 432 mm, and the length from the second sensor 8 to the rear end of the first side 7 of the home base 2 is 432 mm. It must be installed so that the length of one side is 305 mm.

Finally, to describe the installation state of the third sensor 14, the third sensor 14 is passed so that the right end 16 of the detection means 15 is aligned with the second side 17 of the home base 2, and the left end of the detection means 15 is aligned with the second side 17 of the home base 2. 18 will be installed so that it passes so that it coincides with the first oblique side 7 behind the home base 2. Specifically, the third sensor 14 is installed so that the triangle formed by the second rear oblique side 11 of the home base 2 and the right end 16 and left end 18 of the detection means 15 emitted from the third sensor 14 becomes an isosceles triangle. It will be installed.
In order to do so, the third sensor 14
will be installed on the rear left side of the home base 2, and the distance from the rear end of the second side 17 to the third sensor is the length of the leading edge 5 of the home base 2432
The length is 432mm, which is the same as mm. Also, the length from the third sensor 14 to the rear end of the rear first oblique side 7 of the home base 2 must be installed so that it is 305 mm, which is the same length as the rear second oblique side 11 and the rear first oblique side 7. It must be done.

In this way, the first sensor 1, the second sensor 8, the third sensor
By installing the sensor 14, it is possible to determine the strike range for baseball that meets the standards.

Therefore, if the ball thrown by the pitcher enters the overlapping range of the detection means 3, 9, 15 of the three sensors 1, 8, 14, all three sensors will detect the ball, and the ball will be detected by all three sensors. will be considered a strike. However, if the ball falls outside of the three overlapping ranges, only one or two sensors can detect it, and therefore it cannot be determined to be a strike.

By the way, so far we have described the strike range for baseball as seen from a plane, but next we will discuss the height of the strike range. The three sensors 1, 8, 14 mentioned above are also at an angle of 45 degrees in the vertical direction, and the detection means 3, 9,
15 is starting to spread out. Therefore,
If the first sensor 1, second sensor 8, and fourth sensor 14 are installed at the tip of the device as shown in FIG. 2, it becomes possible to detect the height of the strike range.

By the way, FIG. 2 shows an embodiment of the baseball strike and ball determining device according to the present invention. In FIG. 2, reference numeral 20 indicates a base rod bent into a hook shape. Storage rods 21 extending vertically are erected from three locations of the base rod 20, respectively. Adjustment rods 22 are telescopically connected to each of the storage rods 21. Also,
A first sensor 1, a second sensor 8, and a third sensor 14 are attached to the upper ends of the adjustment rods, respectively. Therefore, by adjusting the adjustment rod 22 by expanding and contracting it, the height of the strike range can be adjusted and determined.

Next, the usage state of the baseball strike and ball determining device according to the present invention will be explained.
First, it is assumed that this determination device is installed at a predetermined position with respect to the home base 2. When the determination device is activated, the first sensor 1, the second sensor 8, and the third sensor 14 detect ultrasonic waves or other detecting means 3, 9, 15, respectively.
is emitted. This will put 3 on home base 2.
The strike range formed by the two sensing means will be determined. If the ball thrown by the pitcher enters this overlapping range, that is, the strike range, the three sensors will detect it and send a strike signal to a storage device (not shown).

Furthermore, if the ball thrown by the pitcher does not fall within the overlapping range of the three sensors, at least one of the three sensors will not operate, and no strike signal will be sent.
Note that there are tall batters and short batters, and in order to accommodate these batters, the second batter is
A device like the one shown in the figure is used to adjust and determine the height of the strike.

[Effects of the Invention] Thus, the baseball strike and ball determining device according to the present invention has the following configuration. And, the baseball strike according to the present invention,
According to the configuration of the ball determining device, it is possible to quickly, easily, and more accurately determine strikes for baseball, which until now has not been possible to automatically determine strikes and balls using a batting sunder or the like. will be possible.

Moreover, it has the excellent effect that such a device can be provided to the market in large quantities at extremely low cost.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the outline of a baseball strike and ball determining device according to the present invention.
FIG. 2 is a schematic perspective view showing an embodiment of the present invention. 1...First sensor, 2...Home base, 3...
...Detection means of the first sensor, 4...Left end of the detection means of the first sensor, 5...Tip side of the home base, 6
...Right end of the detection means of the first sensor, 7...First hypotenuse after the home base, 8...Second sensor, 9...
Detection means of the second sensor, 10...Right end of the detection means of the second sensor, 11...Second oblique side after the home base, 12...Left end of the detection means of the second sensor, 13
...First side of the home base, 14...Third sensor, 15...Detection means of the third sensor, 16...Right end of the detection means of the third sensor, 17...Second side of the home base, 18... Left end of the detection means of the third sensor, 20... Base rod, 21... Storage rod, 22...
Adjustment rod.

Claims (1)

[Claims for Utility Model Registration] A strike for baseball comprising three sensors having detection means spread out at an angle of 45 degrees, and a strike range above the home base determined by the overlapping range of the detection means of the three sensors. , a ball determining device, wherein the left end or right end of the detection means emitted from the first sensor passes along the leading edge of the home base, and the right end or left end of the sensing means passes along the first hypotenuse behind the home base. The first sensor is arranged such that the right end of the detection means emitted from the second sensor passes along the second hypotenuse behind the home base, and the left end thereof is on the first side of the home base. The second sensor is arranged so that the detection means emitted from the third sensor passes in alignment with the second side of the home base, and the left end thereof is connected to the first hypotenuse behind the home base. A strike and ball determining device for baseball, characterized in that the third sensor is arranged so that the third sensor passes in agreement with the ball.