JP2018171244A - Golf club shaft fitting system, information processing device, and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow an optimum shaft to be selected by taking into account time from a time point that a flexure amount of the shaft is largest to an impact in fitting a golf club.SOLUTION: An information processing device is equipped with a reception part (reception part 29) and a control part (CPU 21). The reception part receives a deformation volume of a shaft 12 in swinging a golf club 10. The control part calculates a flexure amount of the golf club 10 based on the received deformation volume. The control part generates display information for fitting on shaft hardness using, for parameters, time from a time point that the flexure amount is largest to a time point of an impact, and the maximum value of the flexure amount.SELECTED DRAWING: Figure 1

Description

  The present technology relates to a golf club shaft fitting system, an information processing apparatus, and a method.

  A golfer selecting a golf club that suits him / her is called fitting. Conventionally, when fitting, a golfer performs a test hit using a golf club for test hitting, and a shaft having a hardness suitable for the golfer is selected mainly based on the head speed at that time. Specifically, a harder shaft was recommended for people with higher head speeds. However, even if the head speed is high, there are not a few people who feel that a good hitting result is not accompanied by a hard shaft or that the feeling of swing does not match.

  Therefore, attempts have been made to select the hardness of the shaft by an index other than the head speed. For example, as a factor having a positive correlation with the head speed, there is a bending size of the shaft. In relation to this, Patent Document 1 below describes a method for selecting shaft hardness in consideration of the bending of the shaft in addition to the head speed. The following Patent Document 2 describes mapping a swing of a golfer based on the time from the time when the absolute value of acceleration becomes the maximum to the time of impact (curving return time) for the purpose of classifying the golfer's swing. Has been. It also describes that a bending amount (deflection amount) in a swing is measured and the maximum bending amount is mapped.

Japanese Patent No. 3061640 JP 2014-233430 A

  However, in the prior art described in Patent Document 1, the above-described bending return time and the time from when the shaft deflection amount becomes maximum to the impact are not considered. In the prior art described in Patent Document 2, the point at which the absolute value of acceleration is maximized is regarded as the start point of return, but the point at which the absolute value of acceleration is maximum is defined as the start point of failure return. It may not match. Also, even among golfers with similar return times, the time from the point of maximum shaft deflection to the impact may vary, but there are technologies that use this time for shaft selection. I did not.

  In view of these circumstances, an object of the present invention is to make it possible to select an optimum shaft by considering the time from the point of time when the deflection of the shaft becomes maximum to the impact when fitting a golf club.

One embodiment of the present invention that achieves the above object is a golf club shaft fitting system including a golf club, an information processing device, and a deformation amount detection unit.
The deformation amount detection unit detects a deformation amount of the shaft when the golf club swings.
The information processing apparatus includes a control unit and a display unit.
The control unit calculates a deflection amount of the golf club based on the deformation amount detected by the deformation amount detection unit.
The control unit generates display information for fitting the shaft hardness using the time from the time when the amount of deflection becomes maximum to the time of impact and the maximum value of the amount of deflection as parameters.
The display unit displays and outputs the display information.

  As a result of repeating trial and error in order to solve the above-mentioned object, the inventors of the present invention have found that the time from the time when the amount of deflection when the golfer makes a trial hit to the point of impact is the maximum amount of deflection. The values were found to correlate with shaft hardness suitable for the golfer. According to the golf club shaft fitting system having the above-described configuration, for the fitting of the shaft hardness using the time from the time when the deflection amount of the golf club is maximized to the time of impact and the maximum value of the deflection amount as parameters. Since the display information is generated, it is possible to select an optimum shaft for the golfer who made a trial hit.

Another embodiment of the present invention that achieves the above object is an information processing apparatus including a receiving unit and a control unit.
The receiving unit receives a deformation amount of the shaft when the golf club swings.
The control unit calculates a deflection amount of the golf club based on the received deformation amount.
The control unit generates display information for fitting the shaft hardness using the time from the time when the amount of deflection becomes maximum to the time of impact and the maximum value of the amount of deflection as parameters.

  In order to generate display information for shaft fitting that uses the time from the point of maximum deflection of the golf club to the point of impact and the maximum value of the amount of deflection as parameters, even with the information processing apparatus having the above configuration. It is possible to select the most suitable shaft for the golfer who made a trial hit.

  In the information processing apparatus, the control unit may generate the display information using the speed of the head portion of the golf club as one of the parameters.

  According to the above-described configuration, the head speed can be taken into consideration, and a more optimal shaft can be selected for a golfer who made a trial hit.

  In the information processing apparatus, the control unit divides into a plurality of areas having different recommended shaft hardnesses, each taking a time from the time when the deflection amount becomes maximum to the time of impact and the maximum value of the deflection amount as axes. Display information obtained by plotting the parameters based on the received deformation amount may be generated on the graph.

  According to the above configuration, display information that is more user-friendly than display information based only on physical characteristics can be generated.

In the information processing apparatus, the shaft hardness may be the hardness of the hand portion, and the control unit recommends a shaft having a hard hand portion as the maximum value of the deflection amount increases. The display information including the content may be generated.
Alternatively, the control unit generates the display information including a content that recommends a shaft having a harder hand portion as the time from the point of maximum deflection to the point of impact decreases. Also good.
In addition, the hardness of the hand portion in the present invention does not mean the condition of the shaft. For example, the hardness of the hand portion of the shaft, such as the bending rigidity (EI) of the hand portion.

  As a result of repeating trial and error in order to solve the above-mentioned object, the inventors of the present invention have found that the time from the time when the amount of deflection when the golfer makes a trial hit to the point of impact is the maximum amount of deflection. The values were found to correlate with the hardness of the proximal portion of the shaft suitable for the golfer. In other words, it was clarified that the hand hardness of the shaft is useful as one of the hardness indicators of the shaft. Therefore, according to the said structure, the shaft suitable for the characteristic of a golfer can be selected now.

  The said information processing apparatus WHEREIN: The said control part may specify the time in which the said deflection | deviation amount becomes the maximum from the time between the halfway back in a swing, and a halfway down.

  Depending on the golfer, there is a case where the amount of deflection becomes maximum at the time of back swing or impact, but there is a strong correlation with the above shaft hardness suitable for golfers. Since the maximum value and the time from the point at which the amount of deflection becomes maximum to the point of impact, according to the above configuration, the shaft suitable for the characteristics of the golfer can be selected.

Another aspect of the present invention that achieves the above object is an information processing method including the following steps.
A receiving step of receiving deformation amounts during swing at a plurality of points on the shaft of the golf club.
A calculation step of calculating a deflection amount of the golf club based on the received deformation amount.
A display information generating step for generating display information for shaft hardness fitting using the time from the point of maximum deflection to the point of impact and the maximum value of the deflection as parameters;

  As described above, according to the present invention, when fitting a golf club, it is possible to select an optimum shaft by considering the time from the point when the deflection of the shaft becomes maximum to the impact. .

It is explanatory drawing which shows the use condition of the system which concerns on one Embodiment of this invention. It is a hardware structural example of the information processing apparatus which concerns on the said embodiment. It is a figure for demonstrating the bending (bending) of the golf club which concerns on the said embodiment. It is a figure for demonstrating the bending (bending) of the golf club which concerns on the said embodiment. It is a figure for demonstrating the bending (bending) of the golf club which concerns on the said embodiment. It is a flowchart which shows the procedure of the information processing which the said information processing apparatus performs. In the said embodiment, it is a figure for demonstrating the method of pinpointing the time of the deflection | deviation amount becoming the maximum. It is a figure which shows the other example of the locus | trajectory of the swing shown in FIG. It is a figure for demonstrating the display information of the said information processing apparatus. It is a figure for demonstrating the display information of the said information processing apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[System configuration]
FIG. 1 is an explanatory diagram showing a use situation of a fitting support system 1 for supporting selection (fitting) of a golf club suitable for an individual golfer. As shown in FIG. 1, the fitting support system 1 includes a golf club 10 and an information processing device 20. Since the fitting support system 1 is a computer system used for fitting the shaft 12 of the golf club 10, it can also be called a golf club shaft fitting system.

  The golf club 10 has a head 11, a grip 13, and a shaft 12 to which the head 11 and the grip 13 are attached at both ends. A plurality of strain sensors 101 for evaluating the bending of the shaft 12 are attached to the surface of the shaft 12. A detachable grip end module (not shown) is attached to the end (grip end) opposite to the head 11 of the grip 13. When the golf club GF hits the ball BL with the golf club 10, the golf club 10 measures the distortion of each part corresponding to the bending of the shaft 12 by the distortion sensor 101, and the measured distortion measurement data (distortion measurement data) ) Is transmitted to the control terminal 20 wirelessly, a distortion measurement transmission unit (not shown) is included.

  The information processing apparatus 20 is a tablet terminal device having software (hereinafter also referred to as “fitting software”) for realizing the fitting support system 1. By executing the fitting software in the tablet terminal device, the tablet terminal device controls the golf club 10 and receives distortion measurement data transmitted by the distortion measurement transmission unit of the golf club 10 used for the test hit. . The received strain measurement data is displayed on the display unit 22 of the tablet terminal device as display information for shaft fitting. The fitter is displayed by the fitting software, and based on the strain measurement data corresponding to the bending of the shaft 12, grasps the swing characteristics of the golfer GF and provides a fitting service. Since the information processing apparatus 20 is a terminal used for fitting support, it can also be called a fitting support terminal. Of course, the information processing apparatus 20 is not limited to a tablet-type terminal device, and may be, for example, a notebook PC or a stationary PC and a display device connected thereto.

  As shown in FIG. 1, for convenience of explanation, the vertical direction is the z-axis, the striking direction of the ball BL is the x-axis, and the axis orthogonal to the x-axis and the z-axis is the y-axis.

  FIG. 2 is a diagram illustrating a hardware configuration of the information processing apparatus 20. As shown in FIG. 1, an information processing apparatus 20 includes a CPU (Central Processing Unit) 21, a ROM (Read Only Memory) 23, a RAM (Random Access Memory) 24, an input / output interface 26, and a bus for connecting them together. 25.

  The CPU 21 appropriately accesses the RAM 24 and the like as necessary, and performs overall control of the entire blocks of the information processing apparatus 20 while performing various arithmetic processes. The ROM 23 is a non-volatile memory in which an OS to be executed by the CPU 21 and firmware such as programs and various parameters are fixedly stored. The RAM 24 is used as a work area for the CPU 21 and temporarily holds the OS, various applications being executed, and various data being processed.

  The input / output interface 26 is connected to a display unit 22, an operation receiving unit 27, a storage unit 28, a communication unit 29, and the like. The display unit 22 is a display device using, for example, an LCD (Liquid Crystal Display), an OELD (Organic Electro-Luminescence Display), a CRT (Cathode Ray Tube), or the like. The operation reception unit 27 is, for example, a pointing device such as a mouse, a keyboard, a touch panel, and other input devices. When the operation reception unit 27 is a touch panel, the touch panel can be integrated with the display unit 22.

  The storage unit 28 is, for example, a nonvolatile memory such as an HDD (Hard Disk Drive), a flash memory (SSD; Solid State Drive), or other solid-state memory. The storage unit 28 stores the OS, various applications, and various data. As described above, the storage unit 28 stores the fitting software, which is read and executed by the CPU 21 to execute predetermined information processing. The fitting software is not limited to this, and may be provided by SAAS (Software as a Service).

  The communication unit 29 is various modules for wireless communication such as a NIC (Network Interface Card) and a wireless LAN. The communication unit 29 performs communication processing with a distortion measurement transmission unit (not shown) of the golf club 10 and also receives distortion measurement values.

[Deflection and its maximum value]
With reference to FIGS. 3, 4, and 5, the “deflection amount” in the present embodiment will be described. As shown in FIG. 3, the golf club 10 is deformed by an external force applied by the golfer GF during a swing such as hitting the ball BL. For convenience of explanation, separately from the x, y and z axes shown in FIG. 1, the axis of the golf club 10 is the z ′ axis, the direction in which the head 11 protrudes from the central axis is the y ′ axis, the y ′ axis and the z axis. The axis orthogonal to the 'axis is the x' axis.

  If there is no deformation in the x′-axis direction, as shown in FIG. 3, the deflection amount D of the head portion is a displacement amount in the y′-axis direction from the central axis of the head 11. However, actually, as shown in FIG. 4, the head 11 (FIG. 4A) moves in a complicated manner on the x′y ′ plane according to the swing. The displacement in the z′-axis direction is close to zero. In the present embodiment, the deflection amount D is set as a displacement amount from the central axis due to the swing as shown in FIG.

  The amount of deflection may be measured by any means. For example, the swing of the golfer GF may be captured by a large number of cameras, and calculated by motion capture and image analysis. Alternatively, a camera that captures the direction of the head 11 may be attached to the grip 13, and calculation may be performed by motion capture and image analysis. In the present embodiment, strain measurement data obtained from the strain sensor 101 is used. The plurality of strain sensors 101 are configured to output strain measurement data, for example, 1000 times per second (1000 Hz). The strain measurement data temporarily stored in the golf club 10 is sequentially or collectively transmitted to the information processing apparatus 20 by wireless communication.

  The communication unit 29 receives strain measurement data at each point on the shaft 12 to which the strain sensor 101 is attached. The CPU 21 estimates the curvature distribution of the shaft 12 based on the received measurement data. The curvature distribution of the shaft 12 is estimated by interpolating the curvature of points between the attachment positions of the strain gauge 101. When the radius of curvature is ρ, the curvature is obtained by 1 / ρ = ε / r. Here, ε is distortion (measured data or interpolated value), and r is the radius of the shaft 12.

  By integrating the curvature at each point connected along the z ′ axis, the deflection angle at each point can be calculated. Since the deflection angle is sufficiently small, it can be regarded as a cantilever beam, and by further integrating the deflection angle, an approximate value of the deflection amount at each point can be obtained.

  As described above, the CPU 21 calculates the amount of deflection at each point connected along the z ′ axis. Since the strain measurement data is continuous in time series as described above, the CPU 21 calculates the amount of deflection at every moment when the strain measurement data is measured.

  FIG. 5 schematically shows the deformation of the shaft 12 at times t1 to t4. The CPU 21 calculates the deflection amount D (t, z ′) by the above-described calculation. In the present embodiment, the deflection amount D used for subsequent information processing is shown in FIG. The calculated value at is used. As the deflection amount D in the head 11, for example, a value calculated on the assumption that the curvature of the portion where the shaft 12 is inserted and fixed in the head 11 is zero can be used. More specifically, the portion where the shaft 12 is inserted into the head 11 is in contact with the hosel of the head 11 and has high rigidity. Therefore, it may be assumed that the distortion of the portion is zero and the curvature is zero.

  As schematically shown in FIG. 5, the shaft 12 is variously deformed at the time of swinging, and a time T at which the deflection amount becomes maximum is defined as a time T. The moment of impact is time Ti, and the maximum value of deflection is Dmax.

[Operation of information processing device]
Next, information processing until the information processing apparatus 20 generates display information for shaft fitting based on the above-described deflection amount will be described. FIG. 6 shows an information processing procedure executed by the CPU 21 of the information processing apparatus 20. As shown in the figure, the CPU 21 inputs basic data (data indicating the deformation amount of the shaft 12) used for calculation of the deflection amount received by the communication unit 29 (step 101). As basic data used for calculating the deflection amount, as described with reference to FIGS. 3 to 5, measurement data of the strain gauge 101 and other image information captured by a camera (not shown) can be used. is there. That is, the means (deformation amount detection unit) for detecting the deformation amount of the shaft 12 used for calculating the deflection amount may be included in the golf club 10 or may be provided separately from the golf club 10. .

  Subsequently, the CPU 21 calculates a deflection amount D based on the information input in step 101 (step 102). In the present embodiment, the processing is performed by calculating the deflection amount D of the head 11 for each time with the shaft 12 regarded as a cantilever as described with reference to FIGS.

  Subsequently, the CPU 21 specifies a time point T at which the deflection amount D calculated in step 102 is maximum (step 103). With reference to FIG.7 and FIG.8, the method in which CPU21 specifies the time T at this step is demonstrated. FIG. 7A is a diagram showing a trajectory of movement due to bending of the head 11 at the time of swinging on the x′y ′ plane. The origin in FIG. 7A is the central axis of the golf club 10, and the distance from the origin corresponds to the deflection amount D.

  FIG. 7B is a graph showing the relationship between the time from the start of the swing to the impact and the deflection amount D, corresponding to FIG. 7A. In the figure, the deflection amount D corresponds to the separation distance from the origin in FIG.

  In the swing example in which the deflection of the head 11 draws the locus shown in FIG. 7, there is a peak of the deflection amount D once at the time when the backswing is just started (the third quadrant in FIG. 7A). Subsequently, after the backswing has passed the halfway back, the golfer GF turns back from the top position and performs a downswing, thereby moving from the second quadrant direction to the first quadrant direction in FIG. There is a peak of the deflection amount D again in the quadrant. After that, there is a peak of the deflection amount D at the moment of impact Ti (quadrant 3 in FIG. 7A), and the peak at the time of impact among these three peaks becomes the maximum value of the deflection amount in the whole swing. ing.

  Note that the example shown in FIG. 7 is an example, and not all golfers swing as shown in the figure. FIGS. 8A and 8B show examples of the locus of bending of the head 11 caused by other golfer swings. The example of the locus in FIG. 8A is an example that applies to the majority of golfers, and the maximum peak of the deflection amount D in the entire swing is from halfway back to halfway down and appears in the first quadrant direction. On the other hand, in the example of the locus in FIG. 8B, the maximum peak of the deflection amount D in the entire swing is in the second quadrant direction and appears in the early stage of the backswing. This is a small example, but there is a certain percentage.

  In the present embodiment, in order to cope with such various golfer swings, the deflection amount at the initial stage of the backswing and at the time of impact is not a target, and the deflection amount D is only from the halfway back to the halfway down. The maximum time point (and the maximum value Dmax) is specified. As shown in FIGS. 7 and 8, in most golfers, even if the quadrant direction of the maximum peak of deflection in the entire swing is different, when viewed from halfway back to halfway down, There are peaks of the deflection amount D in the first quadrant and the second quadrant direction in both figures. Therefore, the peak in the first quadrant and the second quadrant in both figures can be specified as the peak of the deflection amount D from the halfway back to the halfway down. If Dmax and T based on the peak from the halfway back to the halfway down are used as parameters, an appropriate shaft hardness can be suggested.

  In addition to the absolute value of the deflection amount D, refer to the time that goes back from the point of impact, as a specific method of when the deflection amount D is maximum between the halfway back and the halfway down. And there is a way to specify. In this case, for example, the time point T (and the maximum value Dmax) at which the deflection amount D is maximized is specified only for the period from 0.05 seconds to 0.5 seconds going back from the time of impact. This is because most golfers have a peak in the amount of deflection D between the halfway back and the halfway down between 0.05 seconds and 0.5 seconds from the point of impact.

  In addition, when a camera (motion capture) is used as a means for detecting the deformation amount of the shaft 12, an image of a halfway back position and an image of a halfway down position from the captured image (the golf club 10 is in the horizontal direction). Since the position image) can be specified, the time point at which the deflection amount D becomes maximum can be specified from the image captured between the two images.

  Subsequently, the CPU 21 generates display information (step 104). At that time, the CPU 21 generates display information using at least two parameters, that is, the time from the time T to the time Ti corresponding to the point of impact and the maximum value Dmax of the deflection amount.

[Display Information]
Although there is no limitation on the display information mode, for example, as shown in FIG. 9, a graph with the maximum deflection amount Dmax and the time from time T to time Ti as axes may be generated and displayed. . In this case, the CPU 21 plots the maximum deflection amount Dmax obtained from the swing of the golfer GF who made the trial hit and the time taken from the time T to the time Ti on the graph.

  As shown in FIG. 9, display information may be generated in which a shaft having a hardness recommended for the swing of the plotted golfer GF is indicated using the frequency (cpm). Alternatively, the recommended shaft hardness may be indicated using an index called “flex” indicating the hardness of the shaft. In addition, as shown in FIG. 9, display information for classifying trial hits into a plurality of categories may be generated by drawing on a graph. Since the shaft of the hardness recommended for a fitter or a golfer can be seen at a glance, the fitting support system 1 is easy to use. Note that the maximum amount of deflection Dmax and the time taken from time T to time Ti in FIG. 9 are values when a golf club having a length of 45.5 inches and a vibration frequency of 235 cpm is used for trial hitting.

  As shown in FIG. 9, the golfer GF having a short swing from the time T to the time Ti has a short time that can be used for the return of the shaft 12, so that it has a characteristic that it is quick and easy to return. Shaft 12 is recommended. Similarly, a golfer GF having a swing with a large maximum deflection amount Dmax is difficult to swing if the bending of the shaft 12 is too large. Therefore, a stiff shaft 12 that can suppress the deflection amount is recommended.

[Modification]
Various modifications can be made to the above-described embodiment. For example, in the above embodiment, when the recommended hardness of the shaft 12 is displayed (step 104), the flex of S, R, etc., or the hardness of the shaft 12 such as the frequency is shown, but this is not limitative. Not. For example, it may be an index of the hardness of the shaft 12 such as a forward flex (a displacement amount of the head when the grip side is fixed and a load is applied to the head side).

  The example of the hardness of the shaft 12 indicates the overall hardness of the shaft 12, but the information processing apparatus 20 replaces the hardness of the entire shaft 12 with the hand portion of the shaft 12, that is, the grip 13. It is also possible to generate display information in which the hardness of the portion close to and the portion covered with the grip 13 is the hardness of the recommended shaft 12.

  The inventors of the present invention have repeated trial and error in order to solve the problem of enabling the golfer GF or the fitter to select a golf club or shaft that is optimal for the golfer GF. It has been found that a shaft with a hard hand is suitable for a golfer with a large diameter. Further, it has been found that a shaft having a hard hand is suitable for a golfer who takes a short time from the time when the amount of deflection in the test hit becomes maximum to the time of impact.

  FIG. 10 is a histogram showing a correlation between the value of the maximum deflection amount Dmax in the swing and the frequency with which a shaft having a predetermined hand hardness is recommended. In the figure, shaft groups having substantially the same frequency (cpm) are roughly divided into two according to the hardness of the hand portion, and the recommended frequencies are shown. As shown in the figure, in the case of a group of shafts having substantially the same frequency, golfers who swing with a large maximum deflection tend to recommend a shaft with a stiffer hand.

  There is a relationship between the value of the maximum deflection Dmax and the recommended partial hardness of the recommended shaft even in a shaft group having substantially the same hardness in terms of the frequency (cpm) index, ie, the frequency (cpm) is substantially the same. This suggests that in selecting the shaft hardness, the hardness of the hand portion is an excellent index among the shaft hardness indices.

  Therefore, in this embodiment, it is assumed that the recommended shaft hardness is the hardness of the hand portion, and for golfers with a large value of Dmax, a shaft with a hard hand portion is recommended, and for golfers with a small value of Dmax. The information processing apparatus 20 is configured to generate display information that recommends a shaft with a soft hand. According to this modification, the optimum shaft can be selected for the characteristics of each golfer.

  Furthermore, although not shown in the figure as a result of the trial and error described above, there is a correlation between the time taken from the time T to the time Ti in the swing and the frequency with which the shaft having a predetermined hand hardness is recommended. It has also been found that the shorter the time from the point T at which the amount of deflection becomes maximum to the point of impact Ti, the more suitable the shaft having a harder hand portion. Therefore, the display information generated by the CPU 21 recommends a shaft having a harder hand portion as the time from the time point T at which the deflection amount becomes maximum to the time point Ti of impact becomes smaller. It is good also as including the content which recommends the shaft whose softness of a hand part is soft, so that it becomes large. According to this modification, it becomes possible to select a shaft most suitable for the characteristics of each golfer.

  As another modification, a modification related to a method of acquiring a deflection amount can be considered. In the above embodiment, the amount of deflection is calculated based on the measurement data of the strain gauge 101. However, the strain gauge 101 is only an example of a deformation amount detection unit. Instead of this, motion capture may be performed by a camera that captures a golfer's swing (the entire swing or a temporal or spatial portion of the entire swing), and the amount of deflection may be calculated by image analysis. Alternatively, a method may be used in which a camera that images the direction of the head 11 from the grip 13 is attached to the grip 13, the distance of the head 11 from the central axis is optically measured, and the amount of deflection is calculated from the measurement data.

Regarding the position where the strain gauge 101 is attached, there may be a plurality of positions in the vertical direction for measuring strain in the x′-axis direction and a plurality in the horizontal direction for measuring strain in the y′-axis direction.
As described above, the above embodiment can be variously modified.

DESCRIPTION OF SYMBOLS 1 ... Fitting assistance system 10 ... Golf club 11 ... Head 12 ... Shaft 13 ... Grip 101 ... Strain gauge 20 ... Information processing apparatus 21 ... CPU
22 ... Display unit 29 ... Communication unit

Claims (8)

A golf club shaft fitting system including a golf club, an information processing device, and a deformation amount detection unit,
The deformation amount detection unit detects the deformation amount of the shaft during the swing of the golf club,
The information processing apparatus includes:
Based on the deformation amount detected by the deformation amount detection unit, the deflection amount of the golf club is calculated,
A controller for generating display information for fitting the shaft hardness using the time from the point of maximum deflection to the point of impact and the maximum value of the deflection as parameters;
A golf club shaft fitting system comprising a display unit for displaying and outputting the display information. A receiver for receiving the amount of deformation of the shaft during the swing of the golf club;
Based on the received deformation amount, the deflection amount of the golf club is calculated,
An information processing apparatus comprising: a control unit configured to generate display information for shaft hardness fitting using a time from the point of maximum deflection to the point of impact and the maximum value of the deflection as parameters. An information processing apparatus according to claim 2,
The said control part produces | generates the said display information by making the speed of the head part of the said golf club into one of the said parameters. Information processing apparatus. An information processing apparatus according to claim 2 or 3,
The control unit takes the time from the time when the amount of deflection becomes maximum to the time of impact and the maximum value of the amount of deflection as axes, and on a graph divided into a plurality of areas with different recommended shaft hardness, An information processing apparatus that generates display information in which the parameters are plotted based on the received deformation amount. An information processing apparatus according to any one of claims 2 to 4,
The shaft hardness is a hardness of a hand portion of the golf club,
The said control part produces | generates the said display information including the content which recommends the shaft whose hardness of the said hand part is hard, so that the maximum value of the said amount of deflections becomes large. Information processing apparatus. An information processing apparatus according to any one of claims 2 to 4,
The shaft hardness is a hardness of a hand portion of the golf club,
The control unit generates the display information including a content that recommends a shaft having a harder hand portion as the time from the time when the amount of deflection becomes maximum to the time of impact becomes shorter. . An information processing apparatus according to any one of claims 2 to 6,
The control unit specifies a time point at which the deflection amount is maximum from a halfway back to a halfway down in the swing. A receiving step of receiving deformation amounts at the time of swing at a plurality of points on the shaft of the golf club;
A calculation step of calculating a deflection amount of the golf club based on the received deformation amount;
A display information generating step for generating display information for shaft hardness fitting using the time from the point of maximum deflection to the point of impact and the maximum value of the deflection as parameters; .