JPS62117529A - Grip pressure distribution sensor of athletic tools - 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] (a) Purpose of the invention [Field of industrial application] This invention is used for biomechanical analysis of athletic players.
The present invention relates to a grip pressure distribution sensor for grips of sports equipment such as golf clubs, tennis rackets, and baseball balls.

[Prior Art] In playing golf, tennis, or batting in baseball, the distribution of grip pressure when holding sports equipment such as clubs, rackets, and bats depends on the player's sensitivity and the like. One important <r factor that determines eligibility.

Because of this, a biomechanical analysis of J5 and Brae\Fu is necessary for training these luck mhs.

Traditionally, for biomechanical analysis of players, foot pressure,
For analyzing the movement of the hand, there are force plates using a large number of small) 10-dossels, hθ, etc. that use a bidet 11G to measure the deformation of a rubber mat, but there are no techniques for measuring the distribution of grip pressure on exercise equipment. Problems 1. In order to measure the grip pressure distribution of an athlete, the above-mentioned Hoya (using a large number of 1-Drel) I-Y-Rubber?・It is possible to use a method such as decoying BiY: by decoding y1~, but 1. The method of Tt't et al. has low resolution, and
The problem is that it is extremely expensive to implement.

This invention was made in view of the circumstances described in -j. When a player grasps the grip of a carrying shell,
It is possible to easily and reliably measure the distribution of the grip pressure on the body (・yet, and to measure the acceleration of the movement mouth of the movement [1], the acceleration +1!il or the weight of the 7- to the play). It is an object of the present invention to provide a grip pressure valve system which cooperates with the input from a foot pressure sensor to measure movement and enables a biomechanical analysis of a C player.

(I+>5?: Ming JX: Lower stage 1 to solve the problem of formation E This purpose (corresponding to 32, the luck of this invention ΦJ) The 1fr lens of the grip pressure of the shell is the A pressure sensitive sensor is placed on the surface of the grip part. Each line of (,:JitsuC
One electrode plate is in the form of a flexible PI plate with electrodes 111 arranged therein, and the other plate is in the form of a flexible sheet 11 in which electrodes 11 are arranged in 8 rows of the aforementioned Which one of the electrode plates, and the one electrode plate and the other electrode plate? It is characterized by comprising a sheet-like detection member configured by integrally bonding a pressure-sensitive conductive Vi rubber sheet 1 to a pressure-sensitive conductive rubber sheet 1.

The details of this invention will be described below, and the embodiments will be explained with reference to the drawings.

In FIG. 1, reference numeral 2 denotes a golf club, and the golf club 2 has a head 4 attached to the tip of a shaft 3, and a grip 5 at the base of a shaft 3.

The grip 5 is equipped with a grip force distribution sensor 1.

The grip pressure distribution lens +J1 is equipped with pressure-sensitive sensor seats 1-6.As shown in FIGS.
11 is laminated to a pressure-sensitive conductive rubber sheet and formed into a bamboo sheet. The pressure sensitive sensor 1-6 has a plurality of measurement points arranged in a matrix.

The electrode plate 7 of No. 11 is made of flexible material such as Mylar film.
A plurality of long electrodes 12 are connected by printed wiring on one side of a synthetic resin sheet having an insulating property. The electrodes 12 are placed in matrix rows a. Therefore, if the number of measurement points is 4×4=16, the number of electrodes 12 is 4, matching the number of rows of the matrix.

A flexible electrode plate 8 (like a flexible electrode plate 8) and one side of a sheet made of synthetic resin that provides insulation properties are used for wiring. The long electrodes 13 are arranged in parallel.Each electrode 13 is located along the row of the 7 matrixes, so if the number of measurement points is 4X'1=16, the number of electrodes 13 is Because of the row of 71-ricks, it feels like 4 wood 1°+, and the Wj Electric 11 Go 11 Sheet 11 has insulating properties, but when the front vehicle acts on it in the thickness direction, its distortion The electrical resistance MCI decreases only in the J3 section, resulting in a rubber sheet 1 that becomes conductive. -7II SC) (Yokohama Rubber Co., Ltd. formal attire) can be used for convenience.

Connect one electrode plate 7 of the brake IG to the power source (V not shown), pass the electrode plate 8i-1 of the capacity J, and the multi-core cable 14, and )~15 and interface]-knit 164 ['? and is connected to the computer/computer 17.

The computer 17 is attached with a CRT display 18 and a hard lobby 1 link 30.

Interf f isconite 16 is multibranch Nori 18
, an A/DTI inverter 21, a data memory 22, an interface controller 23, a high speed Δ/'D converter 271, and a data memory 25.

The head 4 may have an acceleration sensor 26 built-in therein, or a Pz-type acceleration sensor with a built-in f1ν-diameter may be used in the acceleration sensor 2G. Acceleration sensor 26 is connected to high speed Δ/D] inverter 24 through multicore cable 14 and via amplifier 27 .

Further, this grip pressure distribution sensor 1 may be used in combination with a foot pressure distribution sensor 28 as shown in FIG. 5, which measures weight shift.

[Function] In the grip pressure distribution sensor 1 configured as described above, when the player grips the grip 5 of the golf club 2, the platform for measuring the grip pressure distribution is
When a load is applied to any of the measurement points of the pressure sensor sheet 6, the resistance of the pressure-sensitive conductive rubber sheet at the measurement point receiving the load decreases according to the magnitude of the load, and at that measurement point. A current flows between corresponding electrodes 12 and 13. The current at this measurement location is scanned by a multiplexer 18, converted into a digital signal by an A/D converter 21, and then recorded in a data memory 22.

By inputting the signal in the data memory 22 to the interface controller 23/computer 17 and processing it, it is possible to know the distribution of grip pressure and its time change.

(c) Effect of the invention The time change of grip pressure measured in this way is shown in Figure 6 (
As shown in b), No. 11! Suppose that the acceleration of the club head at t is as shown in Fig. 6 (a), and the change in weight indicating the shift of the weight is as shown in Fig. 6 (C), Thus, a biomechanical analysis of Play V- can be performed.

This invention does not require a large number of load cells;
In addition, you can use an inexpensive grip pressure horn distribution sensor V without the need for a video device! '7 can be done.

Furthermore, in this grip pressure distribution sensor, it is easy to increase the surface resolution by increasing the number of electrodes in the pressure sensitive sensor sheet 1- and increasing the number of measurement points.

[Brief explanation of drawings]

Fig. 1 is a front explanatory view showing the golf club with grip pressure distribution sensor attached, Fig. 2 is a perspective view showing the pressure sensor sheet, Fig. 3 is an exploded view of the pressure sensor seal l-, and Fig. 4 Figure 5 is a diagram showing the configuration of the system, Figure 5 is a plan explanatory diagram showing a constant pressure distribution measuring device, and Figure 6 is a graph showing changes in nigerip pressure over time. 1...Grip pressure distribution senna 2...Golf Club 3...Shi1?Foot 4...Head 5
... Grip 6 ... Feeling 1 - "Hin → Nosy 1 -
7... One electrode plate 8... Other electrode plate 1
1...Pressure-sensitive conductive rubber seal 1-12...Electrode 1
3... Electrode 14... Multicore cable 15...
・51 measurement unit t~ 16...To interface L unit 1 17...Computer 18...Multiplexer 21...To/'D] converter 2
2... Data memory 23 River interface controller 24... High speed △/D converter 25.
・・Data measurement 2G・・Insect melon sensor 2
7... Amplifier 28... Foot pressure distribution sensor 30
...Hard copy printer Figure 3 Figure 5 ○ ζ Door 2nd Figure 6

Claims (1)

[Claims] A pressure-sensitive sensor may be wound around the surface of the grip of the ball-hitting tool, and the pressure-sensitive sensor may have electrodes arranged along each row of the matrix in correspondence to a plurality of measurement points located in the matrix. one electrode plate in the form of a flexible sheet; the other electrode plate in the form of a flexible sheet having electrodes arranged along each row of the matrix; and the one electrode plate and the other electrode plate. Grip pressure distribution sensor for exercise equipment, characterized by comprising a sheet-like detection member configured by integrally laminating a pressure-sensitive conductive rubber sheet interposed between