JP2022180158A - Apparatus for making colliding body collide against striking tool and method - Google Patents

Abstract

To provide an apparatus that is useful for accurately measuring repulsive performance, etc., without damaging a striking tool including a club head, and provide a method.SOLUTION: An apparatus 1 is provided for making a colliding body 20 collide against a striking surface 11 of a striking tool 10. The apparatus includes a supporting part 100 for supporting the striking tool 10, and a launching part 200 for launching the colliding body 20 toward the striking tool 10 supported to the supporting part 100. The launching part 200 is positioned below the supporting part 100, and is configured so as to launch the colliding body 20 upward. The supporting part 100 includes a supporting piece 102 for supporting the striking surface 11 of the striking tool 10 toward the bottom on the trajectory L of the colliding body 20 launched from the launching part 200. The supporting piece 102 supports the striking tool 10 from the lower part so as not to obstruct the movement to the upper part of striking tool 10.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to an apparatus and method for impacting a striking implement with an impactor.

Japanese Unexamined Patent Application Publication No. 2002-200002 describes an apparatus for causing a golf ball to collide with a club head for measuring resilience performance and the like of the golf club head. This device includes a mounting table on which a club head is mounted and a launching means for launching a golf ball.

The mounting table has three or more holding pins which stand upward and whose upper ends are in contact with the club head. A club head is held on the holding pin with the face substantially vertical. The launching unit launches a golf ball in a substantially horizontal direction, and causes the golf ball to collide with the face of the club head mounted on the mounting table.

Japanese Patent No. 4364447

In the device described above, when a golf ball hits the face of the club head, the club head moves horizontally rearward due to the impact. At this time, friction occurs at the contact portion between the club head and the holding pin. This friction scratches the club head. In addition, since the friction between the club head and the retaining pin prevents the club head from moving backward when it collides with the golf ball, there is a problem that the resilience performance of the club head cannot be accurately measured.

SUMMARY OF THE INVENTION The present invention has been devised in view of the problems described above, and provides an apparatus and method useful for accurately measuring the rebound performance of hitting tools including club heads and the like without damaging them. The main purpose is to

The present invention is a device for causing an impact body to collide with a striking surface of an impact tool, comprising: a support for supporting the impact tool; a launching part for launching the body, the launching part being positioned below the support part and configured to be able to launch the impactor upward; A supporting piece for supporting the striking surface of the striking tool facing downward is provided on the trajectory of the impactor launched from the Secondly, it is a device that supports the hitting tool from below.

In another aspect of the present invention, the support section may include a plurality of support pieces that support the striking tool at different positions.

In another aspect of the invention, at least one of the plurality of support pieces may support the striking surface.

In another aspect of the present invention, at least one of the plurality of support pieces may support a portion of the striking tool other than the striking surface.

In another aspect of the present invention, each of the plurality of support pieces may be adjustable in vertical height.

In another aspect of the invention, each of the plurality of support pieces may be adjustable in horizontal position.

In another aspect of the present invention, the surface of the support piece that contacts the hitting tool may be made of rubber or resin.

In another aspect of the present invention, a recovering tool may be further included above the supporting part for recovering the hitting tool that has moved upward due to contact with the impactor.

In another aspect of the invention, the hitting tool may be a golf club head, and the impact object may be a golf ball.

Another aspect of the present invention is a method for impacting a striking surface of a striking implement with an impactor, wherein the striking implement is positioned such that the striking surface faces downward and upwards of the striking implement. a first step of holding from below so as not to hinder the movement of the hitting tool; and a second step of firing an impact body from below against the hitting surface of the hitting tool held in the first step to collide with the hitting surface. A method comprising the steps of:

In another aspect of the present invention, a third step of measuring the velocities of the colliding body before and after colliding with the impact tool, and a fourth step of evaluating rebound performance of the impact tool based on the velocities before and after the impact. You may further include a step.

The device and method of the present invention can improve the measurement accuracy of the coefficient of restitution without damaging the hitting tool such as the club head by adopting the above configuration and steps.

1 is a schematic side view of an apparatus showing an embodiment of the present invention; FIG. FIG. 2 is an enlarged view of a main part of the supporting portion of FIG. 1; FIG. 11 is a perspective view showing another embodiment of the support; 4 is a front view of FIG. 3; FIG. FIG. 4 is a bottom view of a state in which a wood-type golf club head as a striking tool is placed on the supporting portion of FIG. 3; It is a perspective view which shows the modification of a support piece. FIG. 4 is a plan view showing a state in which an iron-type golf club head as a hitting tool is placed on the supporting portion of FIG. 3; FIG. 4 is a bottom view of a state in which an iron-type golf club head as a striking tool is placed on the supporting portion of FIG. 3; Fig. 10 is a side view of another embodiment of the device; It is the bottom view which looked at the inlet of a collection|recovery tool from the bottom.

An embodiment of the present invention will be described below with reference to the drawings.
The several embodiments disclosed below are not intended to limit the invention in any way. Also, some of the disclosed embodiments can be used singly or in various combinations. Furthermore, throughout this specification, the same or common elements are denoted by the same reference numerals, and overlapping descriptions are omitted.

[Overall device structure]
FIG. 1 is a side view showing one embodiment of the device 1 of the present invention, and FIG. 2 is an enlarged view of the essential part thereof. FIG. 1 shows xyz coordinates, and in the usage state of the device 1 of the present embodiment, the z-axis direction means the vertical direction, and the x and y directions are horizontal directions perpendicular to each other. means direction.

A device 1 of this embodiment is for causing a striking tool 10 and a collision object 20 to collide. By such a collision, for example, the resilience performance of the striking tool 10 can be measured, evaluated, or the like.

Further, in the present embodiment, the hitting tool 10 is a golf club head (hereinafter sometimes simply referred to as "head") 10A, and the collision body 20 is a golf ball 20A. . The head 10A shown in FIG. 2 is, for example, wood-shaped and includes a striking surface (sometimes called a face or club face) 11 for striking a golf ball 20A.

In other embodiments, the hitting implement 10 may be, for example, various rackets used in tennis, badminton, table tennis, etc., or may be bats used in baseball, softball, etc. . In these other embodiments, the impact body 20 is appropriately selected to be a ball or the like that the impact tool 10 is intended to strike.

Returning to FIG. 1, the device 1 of this embodiment includes a support section 100 for supporting a head 10A, and a shooting section 200 for shooting a golf ball 20A toward the head 10A supported by the support section 100. Prepare. Furthermore, the device 1 of the present embodiment includes a first sensor 301 and a second sensor 302 as optional elements for measuring the resilience performance of the head 10A. In a preferred embodiment, the apparatus 1 may be placed within a cage 2 covered, for example, with nets, walls, etc., to prevent flying of the heads 10A and/or golf balls 20A.

[Launch part]
The shooting section 200 is positioned below the support section 100 and is configured to shoot the golf ball 20A upward. For example, an air cannon is used as the launching unit 200 of the present embodiment. The air cannon can use the pressure of compressed air to shoot the golf ball 20A upward. The launching unit 200 may use collision-type launching means instead of the air cannon.

The shooting unit 200 shoots the golf ball 20A substantially vertically upward. That is, the trajectory L of the shot golf ball 20A is in the direction of the z-axis, and preferably substantially parallel to the direction of the z-axis. In a preferred embodiment, launcher 200 may include a tilt mechanism 201 for adjusting the angle of trajectory L of golf ball 20A.

[Support part]
FIG. 2 is a partially enlarged view of the support portion 100 of FIG. As shown in FIGS. 1 and 2, the support portion 100 includes support pieces 102 . The support piece 102 is for supporting the hitting surface 11 of the head 10A downward on the trajectory L of the golf ball 20A shot from the shooting portion 200. As shown in FIG. The support section 100 of this embodiment includes a base section 101 fixed at a predetermined height of the device 1 and a plurality of support pieces 102 detachably fixed to the base section 101 .

The support piece 102 has, for example, one end 102a fixed to the base portion 101 and the other end 102b extending toward the track L of the golf ball 20A and terminating. The other end 102b of the support piece 102 has a support surface 103 that contacts the head 10A so as to support the head 10A from below. In this embodiment, the support surface 103 is formed by a substantially horizontal plane. Various shapes may be employed for the support surface 103 . In order to prevent the head 10A from being damaged by the contact between the support surface 103 and the head 10A, the surface of the support surface 103 is desirably made of rubber or resin.

The plurality of support pieces 102 support, for example, the head 10A at different positions. In the embodiment of FIG. 2, the plurality of support pieces 102 each support the striking surface 11. In the embodiment of FIG. In this embodiment, the toe T side and the heel H side of the hitting surface 11 are placed on the plurality of supporting pieces 102, respectively. In a preferred embodiment, a plurality of support pieces 102 may be provided on either or both of the toe T side and heel H side of the striking face 11 . In this case, since the striking surface 11 is supported by three or more points, the head 10A can be stably supported.

The support piece 102 supports the head 10A from below so as not to hinder the upward movement of the head 10A. For example, when the golf ball 20A collides with the striking surface 11 of the head 10A from below, the impact energy causes the head 10A to bounce upward. no hindrance. Thus, the support piece 102 of this embodiment is configured so as not to interfere with the head 10A when the head 10A is moved upward.

[First and second sensors]
As shown in FIG. 1, the first sensor 301 is a so-called screen sensor and includes a light projecting portion 301a and a light receiving portion 301b. The light projecting portion 301a emits light toward the light receiving portion 301b. This light beam forms a first sensor surface 301c having a substantially horizontal spread. The first sensor surface 301c is formed such that the trajectory L of the golf ball 20A passes through the first sensor surface 301c.

As with the first sensor 301, the second sensor 302 also includes a light projecting portion 302a and a light receiving portion 302b, which form a substantially horizontal second sensor surface 302c. The second sensor surface 302c is located above the first sensor surface 301c, and is formed such that the trajectory L of the golf ball 20A passes through the second sensor surface 302c.

[Operation of the device of the present embodiment]
Next, the operation of the device 1 of this embodiment will be described. Here, the device 1 is used as a device for implementing the method of measuring the resilience performance of the head 10A.

First, the head 10A is supported by the support portion 100 so that the hitting surface 11 faces downward. In this embodiment, the operator places the head 10A on the plurality of support pieces 102 so as to be stationary. That is, the head 10A is balanced on the support piece 102. As shown in FIG. Thereby, the support piece 102 can hold the head 10A from below so as not to hinder the upward movement of the head 10A (first step).

Here, in order to accurately measure the resilience performance of the head 10A, if the striking surface 11 is flat, the head 10A should be positioned on the support piece 102 so that the striking surface 11 is perpendicular to the z-axis. It is desirable to be On the other hand, if the striking surface 11 is formed with a curved surface, it is desirable that the plane of the striking surface 11, which is in contact with the point at which the golf ball 20A is to collide, is positioned on the support piece 102 so as to be perpendicular to the z-axis. .

Next, the golf ball 20A is launched from the launching portion 200 toward the hitting surface 11 of the head 10A held in the first step. As a result, the golf ball 20A collides with the desired position (the position not supported by the support piece 102) on the striking surface 11 at a predetermined speed (second step). In a preferred embodiment, the trajectory L of the golf ball 20A is inclined by about 2° with respect to the z-axis. In this case, there is an advantage that the golf ball 20A that has collided with the head 10A and rebounded can be prevented from colliding with the ejection port of the ejection section 200 or the like.

Due to the collision in the second step, the golf ball 20A bounces downward and the head 10A bounces upward. At this time, since the striking surface 11 of the head 10A moves away from the support surface 103 of the support piece 102 in a substantially vertical direction, substantially no friction occurs at the contact portion between the head 10A and the support piece 102. FIG. Therefore, in the device 1 of this embodiment, the head 10A is prevented from being scratched or damaged due to the friction of the contact portion between the head 10A and the support piece 102. FIG.

Next, the velocities of the golf ball 20A before and after impact with the head 10A are measured by the first sensor 301 and the second sensor 302, respectively (third step). The passage of golf ball 20A before collision is detected first by first sensor surface 301c and then by second sensor surface 302c. From the relationship between the time required from passing the first sensor surface 301c to passing the second sensor surface 302c and the distance from the first sensor surface 301c to the second sensor surface 302c, the speed of the golf ball 20A before collision is can be calculated.

Similarly, the passage of golf ball 20A after collision is detected first by second sensor surface 302c and then by first sensor surface 301c. The speed of the golf ball after collision is calculated from the relationship between the time required from passing the second sensor surface 302c to passing the first sensor surface 301c and the distance from the second sensor surface 302c to the first sensor surface 301c. be done.

Then, the resilience performance (restitution coefficient) of the head 10A is calculated using the pre-collision velocity and post-collision velocity of the golf ball 20A (for example, using their ratio) (fourth step).

In the device 1 of this embodiment, the support piece 102 does not hinder the upward movement of the head 10A when it collides with the golf ball 20A. Therefore, the head 10A that has collided with the golf ball 20A can move upward in a so-called free state. Therefore, according to the device 1 of the present embodiment, it is possible to accurately measure the resilience performance of the head 10A by eliminating the influence of resistance due to friction between the support piece 102 and the head 10A.

[Another embodiment of the support part]
3-5 show other embodiments of the support 100. FIG. 3 is a perspective view of the support section 100 of this embodiment, and FIGS. 4 and 5 are side and bottom views, respectively, of the support section 100 that supports the head 10A. As shown in FIGS. 3 to 5, the support portion 100 of the present embodiment includes a base portion 101 and a plurality of (in this example, four) each fixed to the base portion 101 via a position adjuster 105. and a support piece 102 .

The base portion 101 of this embodiment is, for example, a rectangular frame extending in the xy plane. However, the base portion 101 may be a circular frame, and may not be annular. The base portion 101 is fixed at a predetermined height of the device 1 using a jig or the like (not shown).

The base portion 101 of this embodiment defines an opening 101a therein. A trajectory L of golf ball 20A fired from launching portion 200 is positioned to pass through opening 101a. Further, the hitting surface 11 of the head 10A is arranged in the opening 101a so as to face downward.

The position adjuster 105 of this embodiment can adjust the height (z-direction) and/or horizontal position (x- and y-directions) of each support piece 102 . Accordingly, the support section 100 can support heads 10A of various sizes and/or shapes.

The position adjuster 105 of this embodiment employs, for example, a ball screw mechanism. Specifically, the position adjuster 105 includes a vertically extending frame 106 , a pair of support blocks 107 arranged above and below the frame 106 , and a pair of guide shafts 108 fixed between the pair of support blocks 107 , 107 . , a screw shaft 109 rotatably supported between a pair of support blocks 107, 107, a nut portion 110 that engages with the guide shaft 108 and the screw shaft 109 and can move up and down, and a screw shaft 109 that rotates. and an operation knob 111 for moving. The support piece 102 is fixed to the nut portion 110 .

In the position adjuster 105 as described above, the screw shaft 109 rotates when the operation knob 111 is rotated, and the nut portion 110 whose rotation is restrained by the guide shaft 108 moves up and down. Thereby, the vertical position of the support piece 102 fixed to the nut portion 110 can be adjusted steplessly, for example.

The position adjuster 105 is not limited to the ball screw mechanism as in the present embodiment, and various mechanisms or structures can be employed as long as the vertical position of the support piece 102 can be adjusted.

Further, the position adjuster 105 of this embodiment is detachably fixed to the base portion 101 . As shown in FIG. 4 , the position adjuster 105 of this embodiment includes, for example, support pins 120 projecting downward from the frame 106 . The base portion 101 also has a plurality of mounting holes 121 formed in the x and y directions into which the support pins 120 can be inserted. Therefore, by inserting the support pin 120 into one of the mounting holes 121, the horizontal position of the support piece 102 can be appropriately adjusted according to the size and shape of the head 10A. The horizontal position adjustment mechanism of the position adjuster 105 is not limited to the insertion type as in the present embodiment, and various mechanisms or structures such as a slide type may be employed.

6 shows a perspective view of the nut portion 110 of the position adjuster 105. FIG. As shown in FIG. 6, the support piece 102 is desirably fixed to, for example, a position adjuster 105 so as to be detachable. The support piece 102 of this embodiment is fixed to a groove-shaped mounting portion 123 provided in the nut portion 110 by a screw (preferably a wing bolt) 122 . Thereby, when the support piece 102 is worn or damaged, only the support piece 102 can be repaired or replaced.

In addition, it is desirable to prepare a plurality of types of support pieces 102 having different shapes in advance. In this case, the support piece 102 can be replaced with one having an optimum shape according to the head 10A to be supported. In the example of FIG. 6, a plurality of types (three types in this example) of support pieces 102A, 102B, and 102C having different shapes of the support surfaces 103 are shown as the support pieces 102 .

4 and 5 show an example in which the head 10A is supported by three support pieces 102, but may be supported using four support pieces 102. FIG. Further, the position at which the support piece 102 supports the head 10A is not particularly limited. That is, as shown in FIG. 5, two support pieces 102 directly support the striking surface 11 on the toe T side of the head 10A, but one support piece 102 supports the heel H side of the head 10A. , support the portion of the head 10A other than the striking surface 11 (near the hosel in this embodiment). In this way, if the head 10A can be adjusted to a desired position, the position supported by the support piece 102 can be determined arbitrarily.

7 and 8 show the case where the head 10A is of the iron type. 7 and 8, the head 10A is supported by four support pieces 102. In the embodiment shown in FIGS. Also, in this example, one of the support pieces 102 supports the hosel portion 12 of the head 10A from below at a position other than the striking surface 11 .

In figure 9 a further embodiment of the device 1 of the invention is shown.
The device 1 of the embodiment of FIG. 9 further includes a recovery tool 400 above the support 100 for recovering the head 10A that has moved upward due to contact with the golf ball 20A.

The collection tool 400 includes, for example, a case 401 defining a space i for housing the head 10A. The case 401 is formed with an inlet 402 on the bottom side thereof.

Inlet 402 is positioned above head 10A resting on support 100, for example. FIG. 10 shows a bottom view of inlet 402 from below. As shown in FIG. 10, inlet 402 comprises a plurality of elastically deformable cantilevers 403 separated by slits 404, for example. The cantilever piece 403 is made of, for example, a rubber material. The slits 404 of this embodiment extend radially so that the cantilever piece 403 is formed in a substantially triangular shape.

The cantilever piece 403 is largely elastically deformed upward by colliding with the head 10A moving upward at high speed. This allows the head 10A to pass through the entrance 402 and enter the space i of the collection tool 400 . The head 10A that has entered the space i collides with, for example, the wall surface of the case 401, and its kinetic energy is greatly reduced.

On the other hand, the cantilever piece 403 restores its original shape after the head 10A has passed through the inlet 402 . Therefore, even if the head 10A falls on the entrance 402 again in the space i, the cantilever piece 403 is not greatly deformed and the head 10A is held in the space i. Thus, the recovery tool 400 can recover the head 10A into the space i. Incidentally, the case 401 may include an extraction port 405 for extracting the head 10A collected in the space i.

In a preferred embodiment, at least the surface of the case 401 facing the space i side is made of a flexible material, such as rubber or foam material, which does not damage the head 10A even if it comes into contact with the head 10A. desirable. Furthermore, the wall surface of the case 401 itself may be composed of a net or a mat having cushioning properties.

Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above specific disclosure, and various It can be changed and implemented.

1 device 10 hitting tool 10A head 11 hitting surface 20 impact body 20A golf ball 100 supporting part 102 supporting piece 200 launching part 400 recovery tool L trajectory

Claims (11)

A device for causing an impact body to collide with a striking surface of a striking tool,
a support section for supporting the striking tool; and a launching section for shooting the impactor toward the striking tool supported by the supporting section,
the launcher is positioned below the support and configured to launch the impactor upward;
The support section includes a support piece for supporting the striking surface of the striking tool facing downward on the trajectory of the impactor fired from the launching section,
The support piece supports the hitting tool from below so as not to hinder the upward movement of the hitting tool.
Device. 2. The device according to claim 1, wherein the support includes a plurality of support pieces that support the striking implement at different positions. 3. The device of claim 2, wherein at least one of said plurality of support pieces supports said striking surface. 4. The device according to claim 2, wherein at least one of said plurality of supporting pieces supports a portion of said striking tool other than said striking surface. 5. The device according to any one of claims 2 to 4, wherein the plurality of support pieces are each adjustable in vertical height. 6. The apparatus according to any one of claims 2 to 5, wherein each of said plurality of support pieces is adjustable in horizontal position. 7. The device according to any one of claims 1 to 6, wherein the surface of said support piece that contacts said striking implement is made of rubber or resin. 8. The apparatus according to any one of claims 1 to 7, further comprising a recovery tool above the support for recovering the impact tool that has moved upward due to contact with the impactor. 9. The apparatus of any one of claims 1-8, wherein the striking implement is a golf club head and the impactor is a golf ball. A method for causing an impact body to collide with a striking surface of a striking tool, comprising:
a first step of holding the striking tool from below so that the striking surface faces downward and the upward movement of the striking instrument is not hindered;
a second step of projecting an impact body from below onto the striking surface of the striking tool held in the first step to collide with the striking surface;
Method. a third step of measuring velocities of the impact body before and after impact with the impact tool;
11. The method according to claim 10, further comprising a fourth step of evaluating resilience performance of said striking implement based on said pre- and post-collision velocities.

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