JPS5845728Y2 - golf club measuring device - Google Patents

Description

[Detailed explanation of the invention] This invention is based on the shaft flex (positioning) of golf clubs.
This invention relates to a measuring device for measuring a deflection curve.

Conventionally, as a device for measuring the performance of a golf club shaft, as shown in FIGS. 1 and 2, a golf club 1' is used.
Fix the grip l'a so that the head l'a is horizontal, and
A known method is to measure the amount of deflection when a certain weight W is suspended from 'b, divide this amount of deflection into several levels, and indicate each level with an appropriate symbol.

However, even if the amount of deflection of a club shaft is the same, due to differences in the deflection curve, some club shafts may deflect as shown in Fig. 2 A, while others may deflect like the mouth. Affects the dynamic flex you feel when you swing.

Therefore, there is a known method of bending the club shaft by applying force to both ends of the club shaft before the head or grip is attached, and observing how the shaft flexes (see the outline).

However, such conventional measuring devices can only measure the flex of the shaft and the approximate way it bends, and cannot accurately but easily measure the difference in the way the shaft flexes.

In particular, the method of looking at the approximate deflection of the shaft has the disadvantage that it cannot be measured after the head and grip are attached because force is applied to both ends of the club shaft.

The present invention takes these points into consideration and allows the flex and deflection curve of the shaft to be accurately and easily measured.

An embodiment of the present invention will be described below based on FIGS. 3 to 7. A support 3 for horizontally supporting the golf club 1 is fixed to the right end of the main body 2, and a rod-shaped support body 3 is fixed to the right end of the main body 2. A slide 5 is horizontally fixed by a slide support 6, and a deflection sensing section 4 equipped with a dial gauge 8 for measuring the amount of deflection is slidably fitted into the slide 5.

The slide 5 is for horizontally guiding the deflection sensing section 4, and therefore a horizontal groove formed directly on the main body 2 may be used.

Reference numeral 7 denotes a weight body for bending the golf club 1, which is suspended near the head 1b.

Another embodiment shown in FIG. 6 uses a differential transformer 10 in the deflection sensing section 4, and detects the amount of deflection by detecting voltage changes caused by fluctuations in the iron core 10'. The balancer 9 is connected to the iron core 1 via a pulley 14 so that the load of the differential transformer 10 is not applied to the shaft 1C.
0' to transmit the vertical movement of the balancer 9 due to the amount of deflection of the shaft 1C to the iron core 10'.

In another embodiment shown in FIG. 7, a light source 11 is provided on one side of a U-shaped frame 15 that sandwiches the shaft 1C, and an optical fiber 12 serving as a photosensitive member is provided on the other side.
The shadow S is sensed by the optical fiber 12 group, and this is electrically sensed by the phototransistor 16 to measure the amount of deflection.

Of course, the six groups of range stuccos may be directly provided on the frame 15 facing the light source 11.

When measuring the shaft flex and deflection curve of golf club 1, hold grip 1 so that club 1 is horizontal.
A is placed against the abutment plate 13 and supported by the support body 3.

Next, the weight body 7 is placed on the head 1b at a certain distance from the abutting plate 13.
When suspended from a nearby club shaft 1C, the club shaft 1C bends.

The deflection sensing section 4 is slid horizontally at regular intervals to measure the amount of deflection at each part of the shaft 1C, and a deflection curve is obtained from the amount of horizontal movement and the amount of deflection (FIG. 4).

The amount of deflection when the deflection sensing section 4 comes directly above the weight body 7 is measured, and the shaft flex is determined based on the magnitude of this amount of deflection.

The deflection sensing section 4 equipped with the differential transformer 10 shown in FIG. 6 is moved horizontally by an automatic feeder equipped with a motor, and the amount of deflection is converted into a secondary voltage generated in the differential transformer 10, and the deflection sensor 4 is converted into a secondary voltage generated in the differential transformer 10, and the deflection sensing section 4 is moved horizontally by an automatic feeder equipped with a motor. 1. The deflection curve may be dynamically determined.

As described above, the present invention flexes the club shaft by suspending a weight near the head of a horizontally supported golf club.
Since the amount of deflection in each part of the bent shaft can be measured using a horizontally moving deflection sensor, it is possible to accurately and easily measure not only the flex of the shaft, but also the way the shaft is deflected, that is, the deflection curve. can be measured.

Therefore, by using this golf club measuring device, it is possible to very easily provide a set of golf clubs having the same timing characteristics, and even after the head, grip, etc. are attached to the shaft, the shaft flex and deflection can be measured. Since curves can be measured, measurement work becomes extremely easy.

[Brief explanation of the drawing]

Figure 1 shows a conventional example of a device for measuring shaft flex.
2 is a deflection curve of the conventional device shown in FIG. 1, FIG. 3 is a mechanical diagram of the measuring device of the present invention, FIG. 4 is a deflection curve, FIG. 5 is an overall perspective view of the measuring device of the present invention, and FIG. The figure is an enlarged view of a deflection sensing section using a differential transformer, and the seventh figure is an enlarged view of a deflection sensing section using a light source and optical fibers. 1a...grip, 1b...head,
1C... Club shaft, 3... Support body, 4... Deflection sensing section, 5... Slide, 7... Weight body.

Claims (1)

[Claims for Utility Model Registration] (1) A support 3 that horizontally supports the club shaft HC, a deflection sensing section 4 that measures the amount of deflection of each part between the grip 1a and the head 1b, and the deflection sensing section 4. This golf club measuring device is equipped with a slide 5 for guiding in the horizontal direction and a weight body 7 hanging down near the attachment part of the club head 1b. 2. The golf club measuring device according to claim 1, which uses a dial gauge 8 as the deflection sensing section 4. 3. The golf club measuring device according to claim 1, which uses a differential transformer 10 in the deflection sensing section 4. 4. Place the light source 11 between the shaft 1C and the deflection sensing portion 4.
A measuring device for a golf club according to claim 1, which uses a photo-sensing member 12.