KR20040092449A - Golf club measuring device - Google Patents

Abstract

PURPOSE: Provided is a golf club measuring device to allow the user to measure a weight, a swing weight and a natural frequency of golf club by using a only single device, and to correctly measure the natural frequency by simple construction. CONSTITUTION: The golf club measuring device includes a club supporting portion(4) for supporting a golf club(G) disposed parallel to an action plate(2) from lower side and a grip supporting portion(5) for urging the grip end of the golf club from upper side. The action plate is disposed in a base(1) via a holding support(8) in which a load cell is contained. In a reference position, the action plate is supported by a pivoting member(6) and the pivoting member releases the supporting state of the action plate. The weight of golf club is measured in a state that the golf club is supported in the club supporting portion and the grip supporting portion and the pivoting member is released by a output signal of the load cell. The swing weight is measured in a state that the pivoting member maintains the reference position of the action plate.

Description

Golf Club Measuring Device {GOLF CLUB MEASURING DEVICE}

The present invention relates to a device capable of measuring the weight and swing weight of a golf club.

The present invention relates to a device for measuring natural frequency, which is a characteristic value of a golf club, or a device capable of simultaneously measuring the weight, swing weight, and natural frequency of a golf club.

The golf club is formed by attaching the head to the tip of the shaft and simultaneously attaching the grip to the base, but the characteristics of the golf club include its weight and the weight of the club (swing weight) that is felt when the grip is held. Although the shaft is expressed by a rigid shaft or a soft shaft, the characteristic values such as the vibration (unique frequency) of the shaft when the club is shaken are also important as indicating the hardness of the shaft. The rigid shafts oscillate with a small amplitude, resulting in large natural frequencies, while the smooth shafts are the opposite.

The swing weight indicates the weight of a club felt on the wrist or the like when the grip is held as described above, and a 5 inch measuring method, a 12 inch measuring method, a 14 inch measuring method, and the like are performed. For example, when measuring by the 14-inch measurement, the swing weight is held when the club is held at a position 14 inches from the grip end of the club as a support point, and a force F to balance the club is applied to the grip end. K) can be obtained by 14 × F.

Then, the value of K is largely divided into A to F from the light side, and each major classification is further subdivided into 10 to 0 to 9 to display the weight of the club felt on the wrist or the like when the grip is gripped, for example, as shown in D5. . Then, the user selects the club of the optimal swing weight based on his power based on this display.

As described above, these characteristic values are important factors in designing a golf club, and various devices for measuring these characteristics have been proposed and put into practical use. In addition, since the weight of a golf club and a swing weight are calculated | required basically by measuring a weight, it can usually measure both by one measuring apparatus. However, in order to be able to measure both by one measuring apparatus, it is necessary to install two weighing scales, such as a load cell, in a measuring apparatus, and a load cell with high precision is expensive, and a structure is complicated and a cost rises. There was this.

Therefore, an object of the present invention is to provide a golf club characteristic measuring apparatus which is simple in structure and capable of measuring the weight and swing weight of a golf club only by embedding one load cell.

On the other hand, the natural frequency is held by one end of the club to impart vibration to the shaft, and is measured by a phototube, a stroboscope, or the like. Therefore, if the apparatus is enlarged and the cost increases, or the amplitude of the shaft is not increased, the natural frequency can be accurately measured. There was a problem that can not. Moreover, in many cases, it becomes a dedicated apparatus for natural frequency measurement, and therefore, two measuring apparatuses were required in order to measure the weight, swing weight, and natural frequency of a golf club.

Thus, a second object of the present invention is to provide a golf club characteristic measuring apparatus capable of accurately measuring the natural frequency of a golf club with a simple structure, and the third object is a simple structure and the weight of the golf club with one device. It is to provide a golf club characteristic measuring apparatus capable of measuring swing weight and natural frequency.

In order to achieve this object, the golf club characteristic measuring apparatus of the present invention is provided with a club support for supporting the golf club arranged horizontally on the working plate from the bottom, and a grip support for pressing the end of the grip of the golf club from above. The actuating plate is placed on the base via a holding table incorporating a load cell, and is supported by the supporting member at the reference position of the operating plate, and the support of the operating plate of the supporting member can be released to allow the golf club to be released. Is held by the club support and the grip support, the weight of the golf club is measured by the load signal output signal and the support point member releases the support plate, and the support point member supports the reference position of the operation plate. Measure the swing weight.

In addition, the invention of claim 2 supports one end side of the working plate on which the clamper is disposed so as to be rotatably supported by the support member, while supporting the other end side as a measuring instrument having a load cell, and clamps the grip of the golf club with the clamper to thereby When the vibration is applied to the shaft of the working plate, the working plate vibrates, and the natural frequency of the golf club is measured by the output signal of the load cell.

According to a third aspect of the present invention, the second support member rotatably supports one end of the working plate on which the clamper is disposed by the first supporting member that can release the supporting plate, and can release the working plate at a predetermined reference position of the working plate. In a state where the other end side of the working plate is supported by a measuring instrument having a load cell, the grip of the golf club is clamped with a clamper, the support of the first support member is released, and the second support member is supported. The swing weight of the golf club is measured by the output signal of the load cell, the weight of the golf club is measured by the output signal of the load cell in a state where the support of the first and second support members is released, and the first support is performed. The support plate is vibrated by applying vibration to the shaft of the golf club while being supported by the member and released from the support by the second support member. And measuring the natural frequency of the golf club by the output signal.

1 is an explanatory diagram showing a state in which a weight is measured.

2 is an explanatory diagram showing a state in which swing weight is measured.

3 is an explanatory diagram showing a state in which the weight is measured in the embodiment of claim 3;

4 is an explanatory diagram showing a state in which the swing weight is measured in the embodiment of claim 3;

5 is an explanatory diagram showing a state in which the natural frequency is measured in the embodiment of claim 3;

6 is an explanatory diagram of an embodiment of claim 2;

<Explanation of symbols for the main parts of the drawings>

1: Base

2: working plate

3: control box

4: club support

5: grip support

6: support member

7: cam member

8: holding support

31: Indicator

51: pressure part

61, 81: axis

71: lever

101: base

102: working plate

103: clamper

104: measuring table

105: first supporting member

106: second support member

107: support member

111, 121: side plates

141: stopper

142, 171: pin

151: pressure member

161: projection

GC: Golf Club

G: grip

S: shaft

H: head

EMBODIMENT OF THE INVENTION Below, embodiment of this invention is described concretely based on drawing. Fig. 1 shows a state in which a weight is measured, and Fig. 2 shows a state in which a swing weight is measured. 1 and 2, the actuating plate 2 disposed on the base 1 is pressed against the end of the club support 4 and the grip G supporting the shaft S of the club GC. The grip support part 5 which has the part 51 is provided. The position of the club support part 4 is a grip G side rather than the center of gravity position of the club GC.

The end of the working plate 2 is fixed to the shaft 81 of the holding table 8 arranged on the base 1, and a holding cell 8 is provided with a load cell (not shown). In the working plate 2, the supporting point member 6 is fixed by the shaft 61 at the reference position. When the swing weight is measured by the 14 inch measurement method, the position of the support member 6 is a distance that is 14 inches (about 356 mm) from directly under the grip G end. The center of gravity of the working plate 2 is located on the grip G side of the support point member 6, that is, left of the support point member 6 in the drawing.

A cam member 7 is disposed below the support point member 6, and as shown in FIG. 1, the lever 71 is rotated while the cam member 7 is spaced apart from the lower end of the support point member 6. Thus, as shown in FIG. 2, the cam member 7 can be brought into contact with the lower end of the support point member 6. That is, when the cam member 7 contacts the lower end of the support point member 6, the working plate 2 is supported by the support point member 6, and the cam member 7 is actuated by separating the cam member 7 from the lower end of the support point member 6. The support by the support member 6 of the board | plate 2 is made to be released.

The mechanism for releasing the support by the support point member 6 of the working plate 2 is not limited to the cam member 7, and various mechanisms can be employed.

Therefore, as shown in FIG. 1, when the support point member 6 is released, the total weight of the working plate 2 and the object to which the working plate 2 is loaded is the load cell built in the holding table 8. It is measured by.

The control box 3 is arranged on the base 1, and each characteristic value is calculated by the output signal of the load cell, but the measured characteristic value is displayed on the display 31 of the control box 3.

Thus, when measuring the weight of the club GC, as shown in Fig. 1, the cam member 7 is spaced apart from the lower end of the support point member 6, and the club is released while the support by the support point member 6 is released. (GC) is held by the club support (4) and grip support (5). Thereby, since the load applied to the load cell of the holding stand 8 via the working plate 2 increases by the weight of the club GC, the weight of the club GC can be calculated | required from the increase.

Next, when measuring the swing weight, the lever 71 is rotated and the cam member 7 is brought into contact with the lower end of the support point member 6 as shown in FIG. Support). At this time, the moment on the left side of the drawing than the supporting point member 6 is the moment of the moment of the club GC (the reaction force of the pressing portion 51 and the distance from the end of the grip G to the shaft 61). Product], i.e., the swing weight of the club GC and the center of gravity position are the difference between the moments of the acting plate 2 located on the left side of the support member 6, and the moment on the right side of the support member 6 is the axis ( The left and right moments of this support member 6 are in the same relationship by the product of the distance between 61 and the shaft 81 and the weight measured by the load cell of the support 8. And since the moment of the acting plate 2 and the distance between the shaft 61 and the shaft 81 are constant, the swing weight of the club GC can be calculated | required from the weight measured by the load cell of the holding stand 8. . In practice, swing weights can be easily obtained by preparing dozens of clubs in which swing weights are already known and obtaining the relationship between gravity and swing weights measured by load cells.

Thus, the weight of the club GC can be calculated | required from the weight measured with a load cell in the state which released the support plate 2 by the support point member 6, and the swing weight of the club GC is a support point member ( It can obtain | require from the weight measured by the load cell of the holding stand 8 in the state which supported the working plate 2 by 6). That is, one load cell can measure both the weight of the club GC and the swing weight.

3 to 5 show a device capable of measuring weight, swing weight and natural frequency, FIG. 3 shows a state of measuring weight, and FIG. 4 shows a state of measuring swing weight. 5 shows a state in which the natural frequency is measured. 3 to 5, a working plate 102 is disposed on the base 101, and a clamper 103 made up of a pair of holding members that open and close is disposed on the working plate 102. The working plate 102 is supported by the measuring table 104, the first supporting member 105, and the second supporting member 106 arranged on the base 101. Although not shown, a control box is disposed on the base 101.

The measuring table 104 incorporates a load cell and is rotatably attached to the end of the working plate 102 by a pin 142. In addition, the stopper 141 is provided in the measurement base 104. As will be described later, when the support by the first support member 105 and the second support member 106 is released, the working plate 102 rotates slightly to contact the stopper 141 as shown in FIG. do. In other words, the working plate 102 is supported only by the measuring table 104.

The first supporting member 105 is formed of an arc-shaped cam, and as shown in FIG. 5, when the arc-shaped cam surface contacts the actuating plate 102, the actuating plate 102 is supported, and FIGS. 3 to 4. As shown in the figure, the support is released by rotating the cam surface away from the working plate 102. The side plate 111 attached to the base 101 is provided with a rotatable pressing member 151. When the first supporting member 105 contacts the working plate 102, the working plate 102 is slightly raised to act. The end plate 121 of the plate 102 comes into contact with the pressing member 151, and presses the end portion of the working plate 102 by the pressing member 151. That is, the end of the working plate 102 is rotatably supported by the first supporting member 105 and the pressing member 151.

The second supporting member 106 is also made of an arc-shaped cam, and as shown in Fig. 4, the cam surface contacts the projection 161 provided at the lower surface reference position of the working plate 102 to support the working plate 102. 3 to 5, the cam surface is rotated so as to be spaced apart from the projection 161 so as to release the support of the working plate 102. As shown in FIGS. The position of the projection 161 is a position at which the distance from the end of the grip portion G clamped by the clamper 103 is 14 inches (about 356 mm) when the swing weight is measured by, for example, a 14-inch measuring method.

However, when measuring the weight of the golf club GC, as shown in Fig. 3, the support by the first support member 105 and the second support member 106 is released to allow the working plate 102 to be measured. 104) only. When the grip portion G is clamped with the clamper 103, the weight measured by the load cell of the measuring table 104 increases by the weight of the golf club GC compared with before the clamping, so that the golf club GC is increased from the increase. The output signal of the load cell is amplified by the amplifier in the control box and becomes an analog output of 0 to 5 V. The output is converted to A / D, calculated by the CPU unit, and the result is displayed on the screen. .

When measuring the swing weight, the working plate 102 is supported by the second supporting member 106 and the measuring table 104 as shown in FIG. And it can calculate | require by calculating with a CPU unit the value which multiplied the distance (for example, 14 inches) from the grip end part to the protrusion 161 by the weight value measured by a load cell.

When the intrinsic vibration value is obtained, the working plate 102 is supported by the first supporting member 105 and the measuring table 104 as shown in FIG. Then, the head H of the club GC clamped by the clamper 103 is pressed by hand to deflect downward, and when released, the shaft S vibrates shortly. The working plate 102 vibrates with the vibration of the shaft S, and the load cell of the measuring table 104 detects this vibration and outputs a signal. For example, the natural frequency can be obtained by performing waveform analysis including Fourier transform on the CPU unit using digital waveform data measured through the same circuit as the above-described weight measurement, and displaying the result on the screen. Alternatively, the natural frequency can also be obtained by directly converting a waveform based on the output signal of the load cell into a pulse wave or counting it with a CPU unit using a comparator circuit.

In this way, it is possible to quickly determine the weight, swing weight and natural frequency of the club GC with one device. Since the natural frequency is obtained using a load cell without using a phototube or a stroboscope, minute displacement can be efficiently detected and accurately measured, and furthermore, it can be miniaturized and manufactured at low cost.

6 shows a measuring device dedicated to natural frequency. The working plate 102 is disposed on the base 101, and the clamper 103 made of a pair of holding members to be opened and closed is disposed on the working plate 102 in the same manner as the above-described measuring apparatus. The working plate 102 is supported by the measuring table 104 and the supporting member 107 disposed on the base 101, but one end of the working plate 102 is rotatably supported by the pin 171. It is hold | maintained at 107, and the other end is rotatably held by the measuring base 104 by the pin 142. Then, the head H of the club GC clamped by the clamper 103 is pressed down by hand to deflect downward, and when the hand is released, the shaft S vibrates briefly and the working plate 102 vibrates with it. This vibration can be detected by the load cell of the measuring table 104 to obtain the natural frequency as in the case of the above-described apparatus.

In the case of this device, a natural frequency can be obtained by using a load cell without using a phototube or a stroboscope, so that a small displacement can be efficiently detected and measured accurately, and furthermore, it can be miniaturized and manufactured at low cost. Can be.

As described above, the golf club measuring device of the present invention is provided with a club support for supporting a golf club arranged horizontally on the working plate from the bottom, and a grip support for pressing the end of the grip of the golf club from above. The plate is disposed on the base via a holding table incorporating a load cell, and is supported by the supporting member at the reference position of the working plate, and the support plate of the supporting member can be released to release the golf club. It is held by the support and the grip support, and the weight of the golf club is measured while the support point member releases the support plate by the output signal of the load cell, and the swing weight while the support point member supports the reference position of the action plate. The structure is simple because it measures the weight and swing of the golf club by just one load cell. It can be set as the golf club characteristic measuring apparatus which can measure a weight.

In addition, the invention of Claims 2 and 3 causes the working plate to vibrate with the vibration of the shaft of the golf club, and the vibration is detected by the load cell of the measuring table to obtain the natural frequency, so that the minute displacement can be detected efficiently and accurately. It is possible to measure the natural frequency, and furthermore, it can be miniaturized and manufactured at low cost. In addition, according to the invention of claim 3, the weight and swing weight can be measured with a single device having a simple structure.

Claims (3)

A club support for supporting a golf club arranged horizontally on the working plate from the bottom and a grip support for pressing the grip end of the golf club from above are provided, and the working plate is disposed on the base via a holding table incorporating a load cell. The support point member is supported by the support point member at the reference position of the working plate, and the support point member can release the support of the working plate, The golf club is held by the club support and the grip support, the weight of the golf club is measured while the support point member releases the support plate by the output signal of the load cell, and the support point member measures the reference position of the action plate. Golf club measuring device characterized in that the swing weight is measured in a supported state. One end side of the working plate on which the clamper is disposed is rotatably supported by the support member, while the other end side is supported on the measurement platform having a load cell, When the grip of the golf club is clamped with the clamper, and the vibration of the golf club is applied to the shaft, the working plate vibrates, and the natural frequency of the golf club is measured by the output signal of the load cell caused by the vibration. Club measuring device. One end side of the working plate on which the clamper is disposed is rotatably supported by the first supporting member that can be released, and the working plate is supported by the second supporting member that can be released at a predetermined reference position of the working plate. The other end side of the said working plate is supported by the measurement stand which has a load cell, Clamp the grip of the golf club with the clamper, The swing weight of the golf club is measured by the output signal of the load cell in a state in which the support of the first support member is released and supported by the second support member, The weight of the golf club is measured by the output signal of the load cell in a state in which the support of the first support member and the second support member is released, When the vibration is applied to the shaft of the golf club while being supported by the first support member and released by the second support member, the working plate vibrates, and the natural frequency of the golf club is caused by the output signal of the load cell caused by the vibration. Golf club measuring device characterized in that is measured.