JPS5988172A - Swing body - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a swing body.

For example, when practicing swinging a tennis racket or a baseball bat, the person does so while counting the number of swings in his/her head.◎ Therefore, the present invention can automatically count the number of swings as the racket, bat, etc. swing. This provides a swing body.

An embodiment of the present invention will be described below based on the drawings. 1st
In the figure, reference numeral 1 denotes a tennis racket which is an exercise equipment, and a swing counter 2 is embedded in the grip end of the racket to form a swing body. The number counter 2 will now be described in detail with reference to FIGS. 2-4. The number counter 2 is a detection device 3 that is sensitive to acceleration exceeding a predetermined value. It is composed of a counting device 4 driven by this detection device 5 and a display device 5 that displays the count contents of the counting device 4. The detection device 6 is built in the frame 2a of the counter, and as shown in the fourth figure, an arm 6 is swingably supported on the main plate of the frame, an inertial mass 7 fixed to the tip of the arm B, It is composed of a damper member 8 having a notch hole 8a that fully restricts the stroke of the inertial mass 70, and a spring 9 that brings the inertial mass 7 into elastic contact with one wall surface of the notched hole 8a. A feed pawl 6a is protruded from the arm B, and the feed pawl 6a engages with a pawl 10 constituting the counting device 4. 11 is a reversal prevention pawl of the ratchet wheel 10.The counting device 4 is the pawl east 10. Deceleration pawl 1 that meshes with this claw
2. It is composed of an indicator shaft 16 to which a driven pawl 13a that extends one valley to the deceleration pawl 12 is fixed. The display device 5 includes a pointer 1 attached to an indicator shaft 13 via a slip bar 2 or the like.
4 and a display 15 indicating the number of times. 16 is a transparent lid removably attached to the frame 5.

Next, the operation will be explained. When the racket 1 is swung in the direction of the arrow a, acceleration acts on the inertial mass 7, and the knob 11 moves within the cutout hole 8a against the force of the ring 9.
At the end, the arm 6 swings. Then, the feed pawl 6a of the finish arm 6 advances the pawl stop 10 by one tooth, and the arm and inertial mass 7 are returned by the spring 9. At this time, the claw 1j10 is prevented from being reversed by the reverse rotation prevention claw 11. Is this ratchet wheel rotating 100 times the deceleration tooth m12? The signal is transmitted to the indicator shaft 13 through the pointer 1.
Rotate 4. In this way, the display board 15 and the pointer 14
From this, the number of swings of the racket 1 can be counted.

In the case of a backhand swing in which the racket swings in the I-1 fb direction, the arm 6 does not swing when acceleration is acting on the inertial mass 7, but in other words, the racket stops at the end of the swing. Immediately before this occurs, the inertial mass 7 moves within the cutout hole 8a.

Claw m10? Send only one tooth. In this way, even backhand swings can be counted reliably.

Next, another embodiment of the number counter will be described.

In Fig. 5, %17 is a differential transformer, 18 is a conversion circuit that converts the displacement of the magnetic core 17a of the differential transformer 17 into a total DC output, and 19 is a conversion circuit that converts the output from the conversion circuit 18 to a sufficient level (swing This is a clipper circuit that produces an output when the acceleration is above a predetermined value. Differential transformer 17. The conversion circuit 18% clipper circuit 19 constitutes the detection device #. 20 is a count number driven by the output of the clipper 19, 21 is a decoder, 22 is a drive opening trace, and 25 is a display device. 24 to 26 are resistors, and by selecting these with a switch 27, the level of the clipper rotation 19 is set.

28 is a reset switch for the counting circuit.

With the above configuration, when the racket 1 is swung at an acceleration higher than a predetermined value, the magnetic core of the differential transistor is displaced by a predetermined amount or more 2, and a W force of a predetermined level or higher is generated from the conversion cycle v-18. An output is generated from the clipper circuit 19. Here, the counting circuit 20 counts and the display #
23 indicates the number of times of switching.

By selecting the resistors 24 to 26 using the switch 27 depending on the slowness of the swing, the number of swings can be reliably counted without malfunction. ! Figure 6 shows yet another embodiment.
The down counter 501/(desired number of practice swings is preset by the 1 set device 29.

Have the child do all the subtraction counts each time he or she performs a practice swing. When the desired number of practice swings have been performed, the down counter 30
The content becomes 0, an output is generated from the 0 discrimination circuit 31, and a notification sound is generated from the sound generation device 62.

In this example, when the user has performed the practice swing the number of times he or she has decided in advance, the user is notified by a sound, so he or she can concentrate on practicing the practice swing without having to count the number of practice swings or look at the display.

The swing counter can be used simply by attaching it to a tennis racket as shown on the left, but it can also be applied to any exercise device that performs a complete swing, such as a kendo bamboo sword, baseball bat, badminton, or table tennis racket.

As described above, according to the present invention, the number of swings is automatically counted just by performing a complete swing, and there is no need to count the number of swings as in the past, and the user can concentrate on practice swings, allowing for effective practice. Ru.

Furthermore, by accumulating the number of swings, it is possible to record the frequency of use of the exercise equipment, the user's gear, etc., and data correlating with the carrier's technical improvement can be obtained.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention, Fig. 2 is a front view of an example of the counter, Fig. 3 is a sectional view taken along the line m-m with the transparent lid removed, and Fig. 4 is FIG. 5 is a schematic front view of an example of a detection device, FIG. 5 is an electric circuit diagram showing an example of an electronic number counter, and FIG. 6 is an electric circuit diagram showing another example of an electronic number counter. 1... Racket 2... Swing counter 6... Detection device 4... ° Counting device 5... Display device 6... Arm 6a... Feed claw 7... Inertial mass 9. ...Spring 10...Heavyweight 11...Reverse rotation prevention pawl 12...Reduction gear 13a...Followed gear 13...Indicator shaft 14...Pointer 15...Display plate 17...Display Transformer 18...Conversion port mark 19...R1 Nosoba mark 20...Counting circuit 23...Display device 60...Down counter and above Patent applicant Seikosha Co., Ltd. Agent Patent attorney Tsutomu Mogami Figure 5 Figure 6

Claims (1)

[Claims] A detecting device sensitive to acceleration of a predetermined level or more, a counting device driven by the detecting device, a display device displaying the counting contents of the counting device, and an exercise tool that is gripped by hand and swings. A swing body featuring