JPH01140167U - - Google Patents
Info
- Publication number
- JPH01140167U JPH01140167U JP3520688U JP3520688U JPH01140167U JP H01140167 U JPH01140167 U JP H01140167U JP 3520688 U JP3520688 U JP 3520688U JP 3520688 U JP3520688 U JP 3520688U JP H01140167 U JPH01140167 U JP H01140167U
- Authority
- JP
- Japan
- Prior art keywords
- switches
- plate
- ball
- switch
- pitcher
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims 1
- 230000008054 signal transmission Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Radar Systems Or Details Thereof (AREA)
Description
第１図は本考案の構成図、第２図はピツチヤー
ズプレートの拡大平面図、１はピツチヤーズプレ
ート、２は標的板、３はコードスイツチ、４は第
１スイツチ、５は第２スイツチ、６は電気信号回
路、７は演算器、７ａは表示器、８はホームベー
スである。
Figure 1 is a configuration diagram of the present invention, Figure 2 is an enlarged plan view of the pitcher's plate, 1 is the pitcher's plate, 2 is the target plate, 3 is the code switch, 4 is the first switch, 5 is the second switch, 6 is an electric signal circuit, 7 is a computing unit, 7a is a display, and 8 is a home base.
Claims (1)
標的板の表面に第２スイツチをそれぞれ形成し、
該第１、第２スイツチ間に電気信号回路を設けて
、該第１、第２スイツチ間の信号伝達時間を測定
することにより投球ボールの時速を検出するよう
にしたことを特徴とする投球練習におけるボール
速度の検出装置。 The first switch is on the top of the pitcher's plate,
forming second switches on the surface of the target plate,
A pitching practice characterized in that an electric signal circuit is provided between the first and second switches, and the speed of the pitched ball is detected by measuring the signal transmission time between the first and second switches. ball speed detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3520688U JPH01140167U (en) | 1988-03-18 | 1988-03-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3520688U JPH01140167U (en) | 1988-03-18 | 1988-03-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01140167U true JPH01140167U (en) | 1989-09-26 |
Family
ID=31261858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3520688U Pending JPH01140167U (en) | 1988-03-18 | 1988-03-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01140167U (en) |
-
1988
- 1988-03-18 JP JP3520688U patent/JPH01140167U/ja active Pending