JP6575152B2 - Golf swing equipment - Google Patents

Description

  The present invention relates to a golf swing apparatus that has portability, can swing at various places according to a play scene of a golf course, and can hit a golf ball placed directly on the ground without teeing up. .

  In order to develop golf balls and golf clubs, golf swing devices that hit golf balls on behalf of players have been proposed (see, for example, Patent Documents 1 and 2). However, in these proposed conventional devices, a motor is mounted as a driving means for swinging the golf club, and an electric source for driving the motor is also required.

  Therefore, the apparatus is large and heavy. As a result, portability is impaired and it is difficult to move to a desired location and swing at that location. Also during the swing, it is connected to the motor to transmit power. Therefore, for example, when a ball placed directly on the ground without being teeed up is hit, a large force such as an impact received when the golf club comes into contact with the ground is transmitted to the power system (driving means), resulting in a failure. Therefore, the conventional apparatus cannot hit a ball placed directly on the ground, and cannot evaluate in an environment that matches the actual play scene.

Japanese Patent Laid-Open No. 08-280852 JP 2011-62430 A

  Therefore, the present invention improves the portability, for example, makes it easy to move to various places on the golf course, and enables the ball to be directly placed on the ground, so that golf can be played in an environment that matches the actual play scene. It is an object of the present invention to provide a golf swing device that can evaluate a ball or a golf club.

The present invention is a golf swing device for hitting a golf ball,
A main body having a leg and a swing axis;
A swing body rotatably supported on the swing shaft and provided with a club holder for fixing a golf club;
Arm holding means capable of holding the swing body and releasing the holding by an operation in a first state where the golf club fixed to the club holder is taken back; and
Elastic drive means for storing elastic energy when the swing body is in the first state and transmitting the elastic energy to the swing body by the release of the arm holding means to give a rotational force around the swing axis. It is characterized by including.

  In the golf swing device according to the present invention, it is preferable that the elastic driving means includes a first elastic body using a string-like rubber elastic body.

  In the golf swing device according to the present invention, the first elastic body is elastically deformed in the first state by connecting one end to the leg portion and the other end to the swing body. It is preferable.

  In the golf swing apparatus according to the present invention, it is preferable that the elastic driving means includes a first adjustment mechanism that adjusts a tensile elastic deformation amount of the first elastic body in the first state.

  In the golf swing apparatus according to the present invention, it is preferable that the elastic driving means includes a second elastic body using a spring.

  In the golf swing device according to the present invention, one end of the second elastic body is fixed to one of the main body portion and the swing body, and the other end is the main body portion and the second elastic body in the first state. It is preferable to contact the other side of the swing body.

  In the golf swing apparatus according to the present invention, it is preferable that the swing body includes a protection unit that moves the golf club relative to the swing body when an excessive force is applied to the golf club. .

  In the golf swing apparatus according to the present invention, the protection means includes a pivot shaft that connects the swing body and the club holder so as to be relatively rotatable about an axis parallel to the swing axis, and the swing body. It is preferable to include a ball plunger that prevents relative rotation between the device and the club holder.

  In the golf swing device according to the present invention, it is preferable that the leg portion includes a plurality of leg pieces, and the length of each leg piece is adjustable.

  In the present invention, as described above, a rotational force is applied to the swing body by the elastic driving means using elastic energy. This eliminates the need for a motor and its power source, reduces the size and weight of the device, and improves portability. For example, it can be easily moved and installed in various places such as rough and bunker in a golf course.

  Further, the elastic driving means stores elastic energy when the swing body is in the first state where the swing body is taken back, and transmits the stored elastic energy to the swing body by releasing from the first state, so that the elastic body moves around the swing axis. Giving rotational force. That is, in the elastic drive means, power works only at the beginning of the swing, and power does not work near the impact. Therefore, even when a large force such as an impact is applied to the golf club at the time of impact, this force can be cut off from being transmitted to the elastic drive means that is a power system, and the occurrence of a failure can be suppressed. Therefore, it is possible to hit a ball placed directly on the ground, and it is possible to evaluate golf balls and golf clubs in an environment that matches the actual play scene.

(A), (B) is the front view and side view which show one Example of the golf swing apparatus of this invention. It is a perspective view which shows the golf swing apparatus in a 1st state. It is a perspective view which shows the golf swing apparatus in an impact state. It is a disassembled perspective view which shows the attachment state of a base and an arm mounting base. It is a perspective view which expands and shows a leg part. (A), (B) is sectional drawing and a perspective view which show a protection means. It is sectional drawing which shows the fixed state in an auxiliary means with a ball plunger. It is a perspective view which shows an arm holding means. It is sectional drawing which shows a 2nd elastic body. It is sectional drawing which expands and shows a part of arm holding means.

Hereinafter, embodiments of the present invention will be described in detail.
As shown in FIGS. 1 and 2, a golf swing device 1 according to this embodiment is a device for hitting a golf ball (not shown) with a golf club G, and includes a main body 2, a swing body 5, and an arm. The holding means 6 and the elastic drive means 7 are provided.

  As shown in FIG. 3, the main body 2 has a leg 8 and a swing shaft 16. In this example, the case where the main body 2 is composed of the base 3 having the legs 8 and the arm mounting base 4 having the swing shaft 16 is shown.

  The base 3 includes a leg portion 8 at the lower end of the main portion 9. The leg portion 8 includes a plurality (three in this example) of leg pieces 8A, and each leg piece 8A is configured to be adjustable in length. This enables installation on uneven ground. As shown in FIG. 5, the leg piece 8A of this example includes a cylindrical leg piece main body 8A1 and a grounding portion 8A2 that is slidably disposed in the inner hole thereof. The grounding portion 8A2 can freely set the protruding length from the leg piece main body 8A1 by the screw 10A of the stopper 10 provided at the lower end of the leg piece main body 8A1. Further, the grounding portion 8A2 is formed with a sharp tip, and is provided with a stop piece 11 for regulating the depth of embedding into the ground.

  As shown in FIG. 4, the main portion 9 has a U-shape in which side plate portions 9B are raised on both sides of the bottom plate portion 9A, for example. Each side plate portion 9B is formed with an insertion hole 12 through which the lie angle adjustment shaft 13 passes.

  The arm mounting base 4 has a rectangular block-shaped body 4A in this example. Projecting shaft portions 13A extending in the golf ball launch direction X (sometimes referred to as “X direction”) are provided concentrically on both side surfaces of the body portion 4A. In this example, the lie angle adjusting shaft 13 is constituted by the pair of shaft portions 13A and 13A. Each shaft portion 13A is pivotally supported by the insertion hole 12 so that the arm mounting base 4 is supported to be tiltable about the axis j1 of the lie angle adjusting shaft 13. In addition to this, for example, a single lie angle adjusting shaft 13 is bridged between the side plate portions 9B and 9B, and an insertion hole for pivotally supporting the lie angle adjusting shaft 13 is provided in the body portion 4A. Can be adopted.

  The trunk shaft 4 </ b> A is provided with the swing shaft 16 extending in the Y direction, which is a direction orthogonal to the lie angle adjustment shaft 13. The swing shaft 16 is rotatably supported by a bearing. The swing shaft 16 of the present example includes, for example, a disc-shaped flange portion 16A that fixes the swing body 5 at the tip portion.

  The main portion 9 is provided with a fixture 15 for fixing the arm mounting base 4 in a predetermined tilting posture. As a result, as shown in FIG. 1B, the swing shaft 16 can be adjusted to a forward tilt posture suitable for the lie angle α of the golf club G. For example, when the ground is horizontal, the arm mount 4 is fixed in a forward leaning posture in which the angle β of the axis j2 of the swing shaft 16 with respect to the vertical line substantially coincides with the lie angle α. As shown in FIG. 4, the fixture 15 of this example is a screw fitting 15A attached to the side plate portion 9B. For example, a screw tip penetrating through the side plate portion 9B and screwing inward is formed on the body portion 4A. By pressing, it can be fixed in a predetermined forward leaning posture.

  Next, the swing body 5 has a long plate shape, and one end portion in the length direction thereof is fixed to the flange portion 16 </ b> A of the swing shaft 16. A club holder 18 for fixing the grip portion Ga of the golf club G is provided at the other end of the swing body 5.

  As shown in FIGS. 6A and 6B, the club holder 18 of the present example includes a base portion 18A that is attached to the swing body 5 via the protection means 20, and a plurality of base portions 18A that are attached to the upward surface of the base portion 18A. (In this example, three) club gripping portions 18B. The base portion 18 </ b> A of this example has a plate shape that is substantially the same width as the swing body 5. Further, the club gripping portion 18B has a pair of gripping pieces 21 in a block shape, for example, which are divided into two vertically. Each gripping piece 21 is formed with a semicircular concave groove 21 </ b> A for receiving the grip portion Ga on its dividing surface. One gripping piece 21 is fixed to the swing body 5. Further, the other gripping piece 21 can be detachably attached to the one gripping piece 21 via the screw fitting 22, and the grip portion Ga can be gripped between the facing concave grooves 21A and 21A in a pressure contact state.

  The protection means 20 moves the golf club relative to the swing body 5 when an excessive force is applied to the golf club, and relieves the excessive force from acting on the swing body 5. The protection means 20 of this example includes a pivot shaft 24 parallel to the swing shaft 16 and a ball plunger 25. The pivot shaft 24 extends through the swing body 5 and the base portion 18A, and couples the pivot shaft 24 so as to be relatively rotatable about its axis j3. The ball plunger 25 is attached to one of the swing body 5 and the base portion 18A, in this example, the swing body 5, and prevents the relative rotation. As shown in FIG. 7, the ball plunger 25 has a well-known structure, and includes a screw shaft-shaped body portion 25A, a ball 25C disposed in the center hole 25B, and a ball 25C disposed in the center hole 25B. And a spring 25D for biasing the tip toward the distal end side. Further, an engaging recess 26 in which the ball 25C is fitted is formed on the downward surface of the base portion 18A.

  The protection means 20 is normally in a state where the ball 25C and the engagement recess 26 are fitted together, and the swing body 5 and the base portion 18A are in a straight line (shown by a one-dot chain line in FIG. 6B). Connect both together. On the other hand, when an excessive force is applied to the golf club G at the time of hitting the ball, the ball 25C is detached from the engaging recess 26 by the moment around the axis j3 and the integral connection is released. As a result, as shown by a solid line in FIG. 6B, the golf club G can be released to the rear side in the launch direction with respect to the swing body 5, and an excessive force is applied to the swing body 5, the arm mounting base 4, Transmission to the lie angle adjusting shaft 13 and the base 3 can be prevented.

  Next, as shown in FIGS. 1 (B) and 2, the arm holding means 6 can hold the swing body 5 in the first state Q1 in which the golf club G is taken back, and holds the holding by the operation. To release. In this example, as the first state Q1, a state in which the golf club G is rotated approximately 180 ° from the impact state Q2 around the axis j2 is shown. However, the present invention is not limited to this, and various rotation angle states can be adopted.

  As shown in FIG. 8, the arm holding means 6 of this example includes a stop tool 29 and a release tool 30 connected to the stop tool 29 via a sheathed wire 28 such as a brake cable. The

  The stop tool 29 is attached to the projecting piece 17 formed on the arm mounting base 4 via, for example, a fixing plate 31. The overhanging piece 17 of this example extends from the side surface of the body portion 4A in the Z direction parallel to the swing body 5 in the first state Q1 and away from the swing shaft 16. For convenience, in the Z direction, the direction away from the swing shaft 16 may be referred to as the rear side, and the approaching direction may be referred to as the front side.

  As shown in FIG. 10, the stop tool 29 of this example includes a case 32, a moving piece 33, and a spring piece 34. The moving piece 33 includes a main body portion 33A that is slidably movable in the Z direction in the case 32, and a stopper portion 33B that is connected to the main body portion 33A and can move integrally with the main body portion 33A outside the case 32. The stopper portion 33B is located between the locking position R1 where the Z-direction rear end portion 33Be protrudes most rearward from the Z-direction rear end surface 32S of the case 32 and the release position R2 on the front side in the Z direction with respect to the locking position R1. , Can move in the Z direction.

  The spring piece 34 is housed in the case 32 and biases the moving piece 33 rearward in the Z direction.

  On the inward surface 5S of the swing body 5 of this example, a locking projection 35 is provided. And this latching protrusion 35 hold | maintains the swing body 5 of the said 1st state Q1 by engaging with the stopper part 33B of latching position R1. An inclined surface 29S is formed on the rear end portion 33Be of the stopper portion 33B. When the swing body 5 is taken back to the first state Q1, the inclined surface 29S can come into contact with the locking projection 35 and move the stopper portion 33B to the Z direction front side. That is, the stop tool 29 can pass the locking projection 35 in the take-back direction, and can stop and stop the club swinging direction.

  As shown in FIG. 8, the release tool 30 is attached to the arm mounting base 4 via a fixing plate 36 in this example. The release tool 30 of this example includes a block-shaped holder 37 that is attached to the fixing plate 36, and a release lever 38 that is pivotally supported by the holder 37 so that one end side thereof can tilt around an axis j4. On the other end side of the release lever 38, a handle portion 38A for manual operation is provided.

  The sheathed wire 28 has a known structure in which the periphery of the wire 28A is covered and protected by a tubular sheath 28B, and one end thereof is connected to a release lever 38. Specifically, one end portion of the sheath 28B is fixed to a mounting plate portion 40 provided on the holder 37, for example. One end of the wire 28A is connected to the release lever 38 at an intermediate position between the handle portion 38A and the pivot portion. The other end of the sheath 28B is fixed to a mounting plate 41 provided on the fixed plate 31. The other end of the wire 28 </ b> A is connected to the front end of the moving piece 33 in the Z direction.

  Therefore, the movable piece 33 can be pulled forward in the Z direction via the wire 28A by a manual tilting operation to the release lever 38. Thereby, the stopper part 33B can be moved from the locking position R1 to the release position R2, and the holding of the swing body 5 by the arm holding means 6 can be released.

  The stop tool 29 and the release tool 30 are not limited to this, and various structures can be adopted.

  As shown in FIG. 2, the elastic driving means 7 is made of an elastic body, and stores elastic energy when the swing body 5 is in the first state Q1. The release of the arm holding means 6 transmits elastic energy to the swing body 5 to give a rotational force around the axis j2.

  The elastic drive means 7 of this example includes at least a first elastic body 43 using a string-like rubber elastic body 43A. In this example, the case where the 2nd elastic body 44 using the spring 44A is further included is shown. The “string” includes a belt shape, a tube shape, and the like. One end of the first elastic body 43 is connected to the leg portion 8 and the other end is connected to the swing body 5. The first elastic body 43 is tensile elastically deformed in the first state Q1, and pulls the swing body 5 to the impact side by the tensile elastic force. In the impact state Q2 (shown in FIG. 3), the amount of tensile elastic deformation of the first elastic body 43 is zero, and the first elastic body 43 is in a slack state.

  As shown in FIG. 5, the elastic driving means 7 of this example includes a first adjustment mechanism 47 that adjusts the amount of tensile elastic deformation of the first elastic body 43 in the first state Q1. The first adjusting mechanism 47 has a holder 47A attached to the leg piece 8A so that the position of the leg piece 8A can be changed, and a screw fitting 47B for fixing the holder 47A at a free position. A hook fitting 46 to which one end of the first elastic body 43 is attached is disposed on the holder 47A. The leg piece 8A is formed with a scale portion 47C for displaying the moving position of the holder 47A.

  As shown in FIGS. 8 and 9, a compression spring is employed in this example as the spring 44 </ b> A of the second elastic body 44.

  One end of the second elastic body 44 is fixed to one of the main body 2 and the swing body 5. Further, the other end of the second elastic body 44 comes into contact with the other of the main body 2 and the swing body 5 in the first state Q1 and undergoes compression elastic deformation. In this example, one end of the second elastic body 44 is fixed to the arm mounting base 4, and the other end of the second elastic body 44 is in contact with the swing body 5 in the first state Q1. When the arm holding means 6 is released, the swing body 5 is pushed out from the first state Q1 in a direction substantially perpendicular to the Z direction by the compression elastic force of the spring.

  As shown in FIG. 9, the second elastic body 44 of this example is held via a fixed block-shaped holder 50 on the upper edge of the projecting piece 17. The holder 50 has a hole 50A extending in a direction substantially orthogonal to the Z direction, and one end side of the second elastic body 44 is accommodated and held in the hole 50A. In this example, a screw hole 50B is concentrically connected to the hole 50A, and an adjustment screw 51 is screwed into the screw hole 50B so as to be freely advanced and retracted. Note that one end of the second elastic body 44 is attached to the tip of the adjustment screw 51 via the holding fitting 52.

  The second elastic body 44 is compressed between the side end face of the swing body 5 and the adjustment screw 51, and the amount of compression elastic deformation can be adjusted by the advancement and retraction of the adjustment screw 51. That is, in this example, the adjustment screw 51 forms the second adjustment mechanism 53 that can adjust the amount of compressive elastic deformation of the second elastic body 44.

  As shown in FIG. 1A, when the rotation angle of the golf club G from the impact state Q2 is the first state Q1 close to 180 °, the direction of the tensile elastic force F of the first elastic body 43 and the swing body The angle θ with respect to the length direction of 5 becomes smaller. Therefore, a sufficient moment around the axis j2 is not generated at the start of the swing. Therefore, in this example, an extrusion force is applied by the second elastic body 44, thereby smoothly starting the swing from the first state Q1.

  It should be noted that the second elastic body 44 can be eliminated according to the rotation angle of the golf club G in the first state Q1. Moreover, the elastic drive means 7 can also be comprised only with the 2nd elastic body 44 by a request | requirement.

  As described above, in the golf swing device 1, a rotational force is applied to the swing body 5 using the elastic energy of the first elastic body 43 and / or the second elastic body 44. Therefore, a motor and its power source are not required, and the apparatus can be reduced in size and weight to improve portability. As a result, for example, movement and installation to various places such as rough and bunker in a golf course are facilitated.

  In the elastic drive means 7, the power works only at the initial stage of the swing and does not work near the impact. Therefore, a large force such as an impact received at the time of hitting the ball can be prevented from being transmitted to the elastic drive means 7, and the occurrence of a failure in the drive system can be suppressed. Therefore, it is possible to hit a ball placed directly on the ground.

  In particular, in this example, since the protection means 20 is provided on the swing body 5, when a large force such as an impact is applied, the golf club G can be released to the rear side in the launch direction with respect to the swing body 5. Therefore, even when the golf club G is in contact with the ground, it is possible to prevent the impact from being transmitted to the swing body 5, the arm mounting base 4, the lie angle adjusting shaft 13, and the base 3, and the failure of the structural system can be prevented. Occurrence can be suppressed.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

DESCRIPTION OF SYMBOLS 1 Golf swing apparatus 2 Main-body part 5 Swing body 6 Arm holding means 7 Elastic drive means 8 Leg part 8A Leg piece 16 Swing shaft 18 Club holder 20 Protection means 24 Pivot shaft 25 Ball plunger 43 1st elastic body 44 2nd Elastic body 47 First adjusting mechanism G Golf club Q1 First state

Claims (7)

A golf swing device for hitting a golf ball,
A main body having a leg and a swing axis;
A swing body rotatably supported on the swing shaft and provided with a club holder for fixing a golf club;
Arm holding means capable of holding the swing body and releasing the holding by an operation in a first state where the golf club fixed to the club holder is taken back; and
Elastic drive means for storing elastic energy when the swing body is in the first state and transmitting the elastic energy to the swing body by the release of the arm holding means to give a rotational force around the swing axis. seen including,
The elastic driving means includes a second elastic body using a spring,
The second elastic body has one end fixed to one of the main body and the swing body, and the other end abutting against the other of the main body and the swing body in the first state. A golf swing apparatus which is elastically deformed by compression .   The golf swing apparatus according to claim 1, wherein the elastic driving means includes a first elastic body using a string-like rubber elastic body.   3. The golf swing device according to claim 2, wherein the first elastic body is elastically deformed in the first state by connecting one end to the leg portion and the other end to the swing body. 4.   4. The golf swing apparatus according to claim 2, wherein the elastic driving unit includes a first adjustment mechanism that adjusts a tensile elastic deformation amount of the first elastic body in the first state. 5. The swing body, when the excessive force to the golf club is applied, any one of claims 1 to 4, characterized in that it comprises a protection means for relatively moving the golf club relative to the swing body A golf swing apparatus according to claim 1. The protection means includes a pivot shaft for connecting the swing body and the club holder so as to be relatively rotatable about an axis parallel to the swing axis, and a relative relationship between the swing body and the club holder. The golf swing apparatus according to claim 5 , further comprising a ball plunger that prevents rotation. The leg portion includes a plurality of leg pieces, each leg piece, the golf swing device according to any one of claims 1 to 6 is adjustable in length.

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