JPH0640906B2 - Golf practice equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a golf practice device, and more particularly to a golf practice device that can be easily practiced by repeating light hitting exercises such as putting and short approach.

It is essential to improve putting and short approach to improve golf, and golf enthusiasts often practice repeatedly during their breaks at home, in the garden, at work, or at work. However, conventionally, it takes time to lay and store practice mats for practice, and it also takes time to collect the hit ball and to position the ball, making it easy to repeatedly practice the patenting. There was no golf practice device to play.

Based on such a fact, the present applicant has previously proposed a putting stroke practice device (Japanese Utility Model Publication No. 54-22871) that allows the user to easily learn the putting operation.

In the above proposed conventional example, a track on which a ball can be placed and rolled in the longitudinal direction, a hitting head provided on the track, and the track and the hitting head can be integrally swung. A shaft provided upward from the rail,
When practicing, the ball is placed on the rail, and while swinging the rail and the striking head integrally through the shaft, the ball on the rail is hit and the ball reciprocally rolls on the rail. By doing so, it is possible to repeatedly practice a batting motion similar to putting.

However, in the above-mentioned conventional example, although the ball returning from the rail tip toward the hitting head is further hit by the hitting head to the tip, repeated hitting practice with a certain rhythm can be performed, but as in the practice of putting, There is a drawback that it is not possible to practice batting practice with each stroke separated.

That is, when attempting to make a hit with each hit according to the above-mentioned conventional example, in a state where the stance is taken as usual, the ball is stationary on the rail contacting the hitting head. When the striking head backswings backward together with the rail as an operation, the ball moves rearward at a slower speed than the head due to friction with the rail.

Next, if you hit the striking head forward with the intention of striking,
The ball still moves in the opposite direction this time due to friction with the rail.

In this way, hitting a ball that moves back and forth on the rails in conjunction with the movement of the head does not give an impact feeling that is commensurate with the launching speed of the hitting head, but it also causes a great deal of discomfort, and immediately There is a drawback that you cannot practice the putting practice.

The present invention eliminates the above-mentioned conventional drawbacks, and in addition, learns correct strokes such as putting and short approach in golf, and can easily hit a stationary ball placed on the ground even in a narrow place. The purpose is to provide training equipment.

In order to achieve the above object, the golf practice device according to the present invention,
A shaft and a head provided below the shaft, and a rail body composed of two rail body constituent members arranged in a substantially swing direction from the head, and the head is provided by swinging the shaft. The rail body is constructed so as to be able to be swung out integrally, and in addition to the distance between the two rail body constituent members being separated by a dimension smaller than the ball diameter, the cross section of the rail body is located on the rail body. When a ball is placed, the bottom of the ball is configured to project below the bottom of the rail body.

In the golf practice device of the present invention configured as described above, at the time of hitting practice, first insert the ball between the two rail component members so that the front surface of the head is substantially in contact with the ball as in the case of normal putting. Set up. In this case, by arranging the bottom surface of the rail body so as to be substantially in contact with the ground, both of the two rail body constituent members are separated from the ball.

Next, the head and the rail body are shaken together through the shaft to make a backswing and a forward swing, but two rails are formed from the backswing and the end of the backswing to the moment when the ball is hit by the head. The member passes through the so-called "armpit" of the ball without hitting the ball, and strikes the ball resting on the ground.

The hit ball rolls on the ground at a higher speed than the rail body for a certain distance without contacting the rail body. On the other hand, the rail body rises along the circular arc head trajectory. In other words, the rail tracked the ball at a speed slower than the rolling speed of the ball, continued to ascend the rail positioned further in front of the ball, and contacted the ball from below when the ball rolled a certain distance on the ground. At the same time, the ball rides on the rail body so as to be scooped, and then the ball leaves the ground for the first time and rolls on the rail body over the rail body constituent members. This rolling is effectively dampened by an increase in the forward slope of the track which also increases thereafter. The ball stalled on the rail body straddles the two rail body constituent members, rolls down, and is positioned at the center of the head for the next impact. The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a front view of a golf practice device according to a first embodiment of the present invention, in which the practice device is carried by a right-handed practitioner and the center of the ball and the center of the putter head are aligned for putting. It is the figure seen from the front of the practitioner. 2 is a view taken along the line AA of FIG. 1, FIG. 3 is a plan view of FIG. 1, FIG. 4 is a sectional view taken along line BB of FIG. 1, and FIG. 5 is C- of FIG. C
A sectional view and FIG. 6 are overall perspective views of the first embodiment.

In the above figure, 1 is a ball placed on the ground 2, 3
Is a virtual rolling line along which the ball rolls toward a virtual target, 4 is the head of the putter, 5 is the striking surface of the head 4, 6 is the head 4
Is a shaft that is integrally connected with and extends upward.
The striking surface 5 is located at right angles to the virtual rolling line 3 when seen in a plan view. Hereinafter referred to simply as rolling line 3. Reference numeral 7 denotes a rail body, and the rail body 7 is composed of two rail body constituting members 7a, and the respective rail body constituting members 7a are arranged substantially parallel to each other at an interval somewhat smaller than the diameter of the ball 1. The two rail body constituting members 7a are grouped into a plate-like shape as shown in FIG.
It is fixed to the bottom of the head 4. This fixing is performed by rail body mounting screws 11. 7. FIG. 7 is a view showing a method of fixing the rail body 7 and the head 4 and is a partial perspective view in which the vicinity of the head 4 is inverted. 12 is the takeback end point. The tip portion 13 of the rail body 7 has two rail body constituent members 7
Although it does not have a special meaning in the portion where a is integrated, it is an index that indicates the direction in which the head 4 is shaken.

When the ball 1 is hit by the head 4, the ball 1 straddles the two rail body constituting members 7a, contacts the edge line 8 of the rail body constituting member 7a, and travels in the longitudinal direction of the rail body 7 while rotating or slipping. it can.

As shown in the figure, the rail body 7 is curved in an arc shape which is upwardly drawn from the head 4 by drawing a concave curve upward. The radius of curvature of the circular arc-shaped curve of this rail body 7 is
It is approximately equal to the radius of curvature of the arcuate trajectory drawn by the bottom of the head 4 by the ideal putting motion of the practitioner. The rail 7 is arranged at a position substantially coincident with the arcuate trajectory drawn by the bottom of the head 4, and its rear end (-X side end) is fixed to the head 4. The trajectory drawn by the bottom of the head 4 during the ideal putting is generally considered to be an arcuate shape, and this arcuate trajectory should be drawn within the vertical plane including the rolling line 3.

The section of the rail body 7 is configured such that when the ball 1 rolls in the longitudinal direction of the rail body, a part of the surface of the ball 1 projects to the outside of the bend of the rail body 7. That is, as shown in FIG. 4, a part of the surface of the ball is configured to roll downward by projecting from the bottom of the rail body 7 by a dimension a. The golf practice device according to the first embodiment of the present invention is configured as described above, and the head 4 and the rail 7 can be integrally shaken by shaking the shaft 6 as in the normal putting operation. As a function explanation, a method for a right-handed practitioner to practice putting by using the first embodiment will be described below.

First, as in the case of normal putting, a stance is taken and the center of the head 4 is aligned with the center of the ball 1 as described above, and the head is set as shown in FIGS. 1, 2 and 3. In this state, the relationship between the ball 1 and the two rail body constituting members 7a is as shown in FIG. 5, and the bottom portion of the rail body constituting member 7a is located at a height b above the ground 2 at which the bottom top of the ball 1 is in contact with the ground. is doing.
That is, the bottom of the rail body 7 is in a state of being floated from the ground 2 with the center in mind, and the dimension of the height b is smaller than the dimension a shown in FIG. Therefore, the ball 1 does not contact the rail body 7 and remains supported on the ground. That is, there is a gap between the ball 1 and the rail member 7a in both the Z direction and the Y direction.

Next, when the takeback is taken and the head 4 is pulled in the (-) X direction, the bottom portion of the head 4 moves upward along the vertical plane including the rolling line 3 along with the rail body 7 in a concave arcuate trajectory. However, as described above, the radius of curvature of the arcuate trajectory drawn by the bottom of the head 4 when the head 4 is pulled is substantially equal to the radius of curvature of the rail body 7 curved in an arcuate shape. Therefore, even if the takeback is performed, the rail body constituting member 7a does not come into contact with the ball 1, and the rail body constituting member 7a continues to rub through the "armpit" of the ball 1, so that the takeback end portion 12 is at the stationary position of the ball 1. It is possible to take back until it comes to. That is, the takeback can be taken from the head 4 to the takeback end point portion 12, and the relationship between the rail component member 7a and the ball 1 on the way back is the same as that shown in FIG. 5 as far as the cross section at the stationary ball position is concerned.

Next, the head 4 is shaken in the X direction to hit the ball 1. The trajectory of the head 4 from the position of the head 4 where the takeback is completed to the hit of the ball 1 is the same as that at the time of the takeback. Also when the rail body 7 is shaken in the X direction, the rail body constituent member 7 is used until the moment of impact.
a does not touch the ball 1 and the ball 1 remains stationary on the ground 2.

The ball 1 hit by the hitting surface 5 of the head 4 rolls on the ground 2 in the X direction without contacting the rail body 7 for a short distance. The rolling speed of the ball 1 is faster than the X-direction component of the speed of the rail body 7 swinging out in the X direction. However, the rail body 7 continues to rise in the Y direction along the arcuate trajectory.
That is, the rail body 7 follows the ball 1 at a speed lower than that of the ball 1, but keeps moving up the rail body located in front of the rolling of the ball 1. The ball 1 eventually comes into contact with the rail body 7 and rides on the rail body 7 so as to be scooped up. Then, the ball 1 starts rolling on the rail body 7 while straddling the two rail body constituent members 7a.

Next, the ball 1, which has started rolling on the rail body 7, stalls as the head 4 swings out in the X direction. This stall is caused by the swinging of the head 4 in the X direction.
This is due to the increase in the slope of. In other words, the ball 1 rolling on the rail body 7 rolls toward the tip of the rail body 7 at a speed faster than the rail body 7 in the initial stage of riding, but the rail body 7 draws an arc and moves upward in the X direction. Ball 1
This is because the ball gradually climbs up a steeply upward-sloping railway body, and the braking force acts on the ball 1. This effective braking occurs because the rail body 7 itself moves in the same direction as the ball while chasing the ball. Thus, the braking performed while increasing the inclination of the rail body 7 acts extremely smoothly without impairing the feeling of naive putting.

Next, the ball 1 stalled on the rail body 7 rolls down on the rail body 7 toward the head 4. In this case, if the head 4 is put on the ground 2 and waits for the ball 1 to return, the ball 1 rolls down on the rail body 7 up to a certain point, contrary to the time of the hit, and the ball 1 falls from the middle.
With the bottom on the ground 2, I leave the golf practice machine and from there I coast back to the front of the head 4.

The structure and method of use (action) of the golf practice device according to the first embodiment of the present invention are as described above, and the ball that is taken from the ground 2 into the golf practice device and braked is again applied to the ground 2 in front of the head 4. Collecting balls, which is troublesome to come back,
There is no need to scrape the ball with the head for positioning, and the practitioner can easily perform in a narrow place while standing in the same position without changing the stance or grip. It is desirable to carry out such exercises while making sure that the center line of the rail track is within the vertical plane including the rolling line 3, which allows the head to take back along the rolling line and swing out. You can learn the basics. In particular, when the direction of the striking surface 5 seen from above with respect to the rolling line 3 generated during take-back or swing-out operation comes from a right angle, it appears as a runout of the tip end portion of the rail body and can be visually recognized under the eye in real time. When the impact is too strong, the ball 1 runs up to the takeback end point portion 12, but in most cases the rail body tip portion 1
The member 3 functions as a stopper to prevent the ball 1 from jumping out of the rail 7.

Next, FIG. 8 is a partial perspective view of a golf practice device which constitutes a second embodiment of the present invention. This embodiment is in front of the takeback end point portion 12 of the rail body 7 in the first embodiment (X side).
Further, two rail body constituting members 7b are integrally extended to
The ball 1 hit by the head 4 can be rolled from the take-back end portion 12 to the rail front end 12a. The distance between the two rail body constituting members 7b is substantially equal to the distance between the rail body constituting members 7a, and the extending portion of the rail body 7 constituted by the rail body constituting members 7b rises forward (X side) as shown in the drawing. It is composed by bending
The radius of curvature of the track curve of the extended portion is smaller than the radius of curvature of the arcuate trajectory drawn by the bottom of the head 4. The tip portion 13 of the rail body 7 is provided on the tip portion of the extended rail body 7 in the same manner as in the first embodiment. Rail body 7 and head 4
The fixing method of is the same as that shown in FIG.

The golf practice device according to the second embodiment of the present invention is configured as described above, and it is possible to take back from the head 4 to the take back end point portion 12 when using. Since the hit ball 1 can roll further forward (X side) than the takeback end point portion 12, the ball can roll to a higher position when the head 4 swings out,
Therefore, more braking can be applied to the ball 1. It should be noted that the radius of curvature of the trapezoidal curve of the rail body 7 in the extended portion can be set independently of the radius of curvature of the arcuate trajectory drawn by the bottom of the head 4, and therefore the radius of curvature of the rail body 7 in the extended portion can be set. It is obvious that the radius of curvature of the curved line may be larger than the radius of curvature of the arcuate orbit drawn by the bottom of the head 4, and a linear rail may be extended. It should be noted that the golf practice device according to the present embodiment has a relatively short takeback length, and has the advantage that the rail body has a short dimension in the X direction and is easy to handle if it is applied when the head 4 is swung hard at a high speed.

FIG. 9 is a partial exploded perspective view showing a connecting structure of the head 4, the rail 7 and the shaft 6 of the golf practice device according to the third embodiment of the present invention. In the figure, 15 is a loose hole for inserting the shaft 6 in the head 4 and 1
6 is a push bolt for fixing the shaft, 17 is a female screw hole, 18 is a sufficiently large rectangular hole provided at the bottom of the head 4, 19
Is a loose hole penetrating from the rear wall surface of the concave square hole 18 to the outer surface of the rear portion of the head 4, 20 is an L-shaped member, 21 is a female screw hole formed in the L-shaped member 20 in the X direction, and 22 is the L-shaped member.
Loose holes drilled in the Z direction in the die member 20, 24 loose holes drilled in the Y direction at the head 4 side end portion of the rail body 7, 25 rectangular parallelepiped pieces, and 26 in the Y direction on the pieces 25. A female screw hole is formed, 27 is a female screw hole formed in the Z direction on the top 20, 28 is a countersunk screw, 29 and 30 are screws, and 31 is a Z direction from the outer surface of the head 4 to the square hole 18. It is a tool insertion hole provided. The shaft 6 is fitted in the shaft insertion hole 15 and is fixed integrally with the head 4 by screwing the shaft fixing push bolt 16 into the female screw hole 17. The rail 7 is fixed to the top 25 by inserting a countersunk screw 28 into the loose hole 24 and screwing it into the female screw hole 26. The top 25 is fixed to the L-shaped member 20 by inserting a screw 30 into the loose hole 22 and screwing it into the female screw hole 27. The top 25 and the L-shaped member 2 integrated in this state
0 is stored in the concave square hole 18 and the screw 29 is inserted in the loose hole 19.
Is inserted and screwed into the female screw hole 21. By the above assembly, the rail body 7 is integrally fixed via the top 25 and the L-shaped member 20.

The connection structure of the head 4, the rail 7 and the shaft 6 of the golf practice device according to the third embodiment of the present invention is as described above, and according to the third embodiment, the length of the shaft 6 can be changed. In addition to the adjustment, the tilt angle θ1 in FIG. 1 and the tilt angle θ2 in FIG. 2 shown in the first embodiment can be adjusted. The golf practitioner of the present invention is in a state where the practitioner is holding,
As shown in FIG. 1, FIG. 2 and FIG. 3, the arcuate trapezoidal curve of the rail body 7 is in the vertical plane including the rolling line 3,
It is easy to use when the tangent of the curved line near the head 4 is substantially parallel to the rolling line 3 and the shaft 6 has an appropriate length. However, in putting, there are individual differences in the inclination and length of the shaft 6, and to cope with this, the shaft length, the tilt angle θ1 of the shaft 6 with respect to the ground 2 when viewed from the front, and the vertical plane including the rolling line 3 It is desirable that the inclination angle θ2 of the shaft 6 can be adjusted as in this embodiment. The adjustment method will be described below.

First, the length of the shaft 6 is adjusted by loosening the shaft fixing screw 16, inserting the shaft 6 in and out of the shaft insertion hole 15, and tightening the shaft fixing screw 16 again. The tilt angle .theta.1 is adjusted by inserting a tool from the tool insertion hole 31 to loosen the screw 30 and rotating the rail 7 and the piece 25 around the screw 30 with respect to the head by an appropriate angle to tighten the screw 30 again. To adjust the inclination angle θ2, loosen the screw 29, and use the rail 7,
Both the top 25 and the L-shaped member 20 are rotated by an appropriate angle with respect to the head 4.

Further, the screw 28 is loosened, and the rail 7 is rotated around the screw 28 at an appropriate angle with respect to the striking surface 5 of the head 4, and the screw 2 is again rotated.
If 8 is tightened, the angle θ3 shown in FIG. 3 can be adjusted.
FIG. 10 is a plan view of the state after adjusting the angle θ3, viewed from the same direction as FIG. The golf practice device adjusted as shown in FIG. 10 has a series of putting operations such as takeback and swinging while the hitting surface 5 viewed in a plane is oriented at right angles to the rolling line 3 in the Xa-Xb direction where the rolling line is warped. The player can practice the batting method (slice-like batting method in which the ball surface is rubbed in the Z direction while rubbing the ball surface in the Z direction). In this case, in practice, the ball rolls in the direction of the rolling line 3, but in the golf practice device, the ball 1 runs on the rail 7 in the Xb direction. However, regardless of the rolling direction of the ball, it is possible to fully acquire the feeling of the trajectory and touch of the head 4 in the actual slice type hitting method while actually hitting the ball 1 at least. If the longitudinal direction of the rail 7 is turned to a position symmetrical with respect to the rolling line 3 and adjusted in the opposite direction to that in FIG. 10, the practice of the hook-type hitting method can be performed contrary to the above.

FIG. 11 is a partial cross-sectional view showing a connecting structure of the head 4 and the rail 7 of the golf practice device according to the fourth embodiment of the present invention. Part of the head 4 and the rail 7 is set on the rolling line 3. It is the figure which cut | disconnected by the vertical plane and looked at right angle to this vertical plane. FIG. 12 is a partial perspective view showing a portion excluding the head 4 from FIG. In FIGS. 11 and 12, 18a is a concave hole provided at the bottom of the head 4, 31a is a tubular member, 29a is a pin having a male screw portion at the end with a diameter substantially the same as the inner diameter of the tubular member 31a, Reference numeral 29b is a female screw hole formed in the head 4 in the X direction, and 31b is a plate-shaped member. The rail body 7 and the tubular member 31a are integrally connected via a plate-shaped member 31b. The tubular member 31a is housed in the concave square hole 18a, and the pin 2 is formed in the X direction in the inner diameter of the tubular member 31a.
9a is slidably and rotatably inserted. The pin 29a is fixed to the head 4 by strongly screwing the terminal male screw portion into the female screw hole 29b.

The golf practice device according to the fourth embodiment of the present invention is configured as described above, and the inclination angle θ2 can be obtained only by the practitioner placing the bottom of the rail body 7 on the ground 2 and inclining the shaft 6 at a desired angle. You can finish the adjustment. Further, in this embodiment, the inclination angle θ2 changes during a series of operations such as take-back and swing-out, and even if one of the two rail body constituting members 7a hits the ground 2 on one side, it is automatically corrected by the centering action. There are advantages.

Next, FIG. 13 is a partial perspective view of a golf practice device which constitutes a fifth embodiment of the present invention, and FIG. 14 is a head 4 of FIG.
FIG. 3 is a partial perspective view showing a connecting structure of the railroad body 7 as viewed from below. In FIGS. 13 and 14, the rail body 7 is the take-back end point portion 12 as in the first embodiment.
To the rear end (-X side end) 12b, the curved portion is curved with substantially the same radius of curvature as the arcuate trajectory drawn by the bottom of the head 4. Reference numeral 32 is a female screw hole formed in the bottom of the head 4, 33 is a pressing member for pressing the rail body 7 as shown in the drawing, 34 is a loose hole formed in the pressing member 33, and 35 is a screw for mounting the rail body 7. The rail 7 has a mounting screw 35 and a loose hole 34.
It is fixed to the head 4 via the pressing member 33 by being inserted into the female screw hole 32.

The golf practice device according to the fifth embodiment of the present invention is configured as described above, and the rail body 7 is shifted in the longitudinal direction with respect to the head 4, and the length from the head 4 to the takeback end point portion 12, that is, the takeback can be taken. The length can be adjusted freely. This adjustment can be performed by loosening the mounting screw 35, shifting the rail body 7, and tightly tightening the screw 35 again. According to the present embodiment, the practitioner can learn an accurate takeback length by accurately pulling the head 4 until the adjusted takeback end point portion 12 comes to the position of the stationary ball 1. In this embodiment, the rail body 7 projects rearward of the head 4 (on the −X side).
Even if the rail body 7 is provided in the rear of the above, it does not cause any obstacle, and it is rather easy to balance the weight as a golf practice device, and since the longer rail body 7 is shaken in the length direction, the swinging direction is further stabilized.

FIG. 15 is a front view of a golf practice device which is a sixth embodiment of the present invention, and is a view of the right-handed practitioner carried and held from the front of the practitioner as in the case of FIG. . FIG. 16 is a plan view of FIG. In FIG. 15 and FIG. 16, the rail body 7 is composed of two linear rail body constituting members 7c arranged substantially in parallel, and the rail body 7 is the ground 2
Are arranged substantially parallel to. The rear end (-X side end) of the rail body 7 is fixed to the head 4, and the takeback end point portion 12 is provided at the front end.
Have. Rail body 7 in relation to the diameter of the ball 1
The sectional structure of is the same as that of the first embodiment.

The golf practice device according to the sixth embodiment of the present invention is configured as described above, and a light putting practice can be performed by the takeback so that the tip portion 13 of the rail body 7 does not contact the ground 2. Note that the rail body 7 can tilt and brake the ball 1 when the head 4 is swung out forward (in the X direction) after hitting, as in the case of the first embodiment.

FIG. 17 is a front view of a seventh embodiment of the present invention, and is a view of a right-handed practitioner in a carrying state as seen from the front of the practitioner, as described above. In the figure, the rail body 7 is composed of two linear rail body constituting members 7d arranged substantially in parallel, and the rail body 7 moves forward from the vicinity of the head 4 to the ground 2 as shown in the figure. It is arranged in the front direction) toward the X direction. The rail body 7 has a rear end fixed to the head 4, and a front end having a takeback end point portion 12. The cross-sectional structure of the rail 7 in relation to the diameter of the ball 1 is the same as in the first embodiment.

The golf practice device according to the seventh embodiment of the present invention is configured as described above, and a longer takeback is possible as compared with the sixth embodiment, and a great amount of braking can be applied to the hit ball 1.

FIG. 18 is a front view of a golf practice device according to an eighth embodiment of the present invention, and is a view of the right-handed practitioner carried and held from the front of the practitioner as in the above. In the figure, the rail body 7 includes a linear portion of the rail body 7 composed of two linear rail body constituting members 7c arranged substantially in parallel, and a front end (X side end) of the portion further forward. And a curved portion of a rail body 7 composed of two upward curved rail body constituent members 7b that are integrally extended toward each other, and the ball 1 hit by a head 4 has two rails. The rail body front end portion 12a is rolled over the body constituting member 7c and then continuously over the two rail body constituting members 7b, similarly to the case of the second embodiment.
It is designed to roll up to. The distance between the two rail body constituting members 7b is substantially equal to the distance between the rail body constituting members 7c, and the cross section of the linear portion of the rail body 7 is the same as that of the first embodiment. The linear portion of the rail 7 is arranged substantially parallel to the ground 2, and the rear end of the portion is fixed to the head 4. The take-back end portion 12 is located at the right end portion of the linear portion of the rail body 7.

The golf practice device according to the eighth embodiment of the present invention is configured as described above, and is suitable for a golf practice device that hits the ball instantaneously at the speed of the head 4 which is short in both takeback and swing length.

FIG. 19 is a front view of a golf practice device which is a ninth embodiment of the present invention, and is a view of the right-handed practitioner carried and held from the front of the practitioner, as described above. In the figure, the rail body 7 is a horizontal portion of the linear rail body 7 composed of two linear rail body constituting members 7c arranged substantially parallel to each other, and a front end (X side end) of the portion. And a slanted portion of a linear rail body 7 composed of two linear rail body constituent members 7d having a forward upward slope integrally extending toward Is configured to roll over two rail body constituting members 7c, and then continuously roll over the two rail body constituting members 7d to the front end portion 12a of the rail body 7 as in the second embodiment. Has been done. The distance between the two rail body constituting members 7d forming the inclined portion of the rail body 7 is substantially equal to the distance between the two rail body constituting members 7c forming the horizontal portion of the rail body 7, and The cross section is the same as the cross section of the rail body 7 of the first embodiment. The rear end of the horizontal portion of the rail 7 is fixed to the bottom of the head 4. The take-back end portion 12 is located at the front end of the horizontal portion of the rail body 7.

The golf practice device according to the ninth embodiment of the present invention is configured as described above, and has the same effect as that of the eighth embodiment.

FIG. 20 is a front view of a golf practice device which is a tenth embodiment of the present invention, and is a view of a right-handed practitioner carried and held from the front of the practitioner as in the above. Figure 21 is the second
It is a top view of FIG. 0, and FIG. 22 is a DD arrow line view of FIG. In FIGS. 20, 21, and 22, the radius of curvature of the rail-shaped body 7 curved in an arc shape is similar to that of the first embodiment, which is the arc-shaped trajectory drawn by the bottom of the head 4 when the trainee is putting. It is almost equal to the radius of curvature. The arcuate trapezoidal curve of the rail body 7 is in the inclined plane in which the vertical plane including the rolling line 3 is tilted toward the trainee side (Z side) by the angle θ4 as shown in FIG. Similarly, the rail 7 is arranged at a position substantially matching the arcuate trajectory drawn by the bottom of the head 4 during the putting, and the rear end (-X side end) is fixed to the bottom of the head 4. The rail body 7 is configured by arranging two rail body constituting members 7e substantially in parallel, and has a takeback end point portion 12 at a front end portion. The cross-sectional structure of the rail 7 in relation to the ball 1 is the same as that of the first embodiment.

The golf practice device according to the tenth embodiment of the present invention is configured as described above, and if the take-back and swing-out operations are performed so as to substantially match the track of the bottom of the head 4 or the arcuate curve of the rail body 7, Rail body component 7e as in the first embodiment
Can hit the ball 1 without touching the ball 1.
The ball 1 hit is a rail 7 for a short distance as described above.
On the ground 2 without touching the ground 3 directions (X direction)
Rolling over, hitting the rail body constituting member 7e on the outer side of the curved plane in plan view and riding on the rail body 7, and thereafter, the ball 1 is braked by the increase in the inclination of the rail body 7 as described above. As shown in FIG. 23, in this embodiment, when the rail body 7 is cut in the Z direction and viewed in the -X direction, the two rail body constituting members 7e are arranged at the same height, but the ball 1 is flat. Considering the rolling up of the curved rail body 7, the edge line 8e formed on the rail body constituting member 7e located on the outer side of the curved rail as viewed in plan is as shown in FIG. The fact that it is arranged above the edge line 8e formed on the rail body forming member 7e located on the inner side of the curve also corresponds to the concentric force applied to the ball rotating and running along the curved curve. It's a good idea. A golf practice device similar to that shown in FIG. 24 having a cross section of the rail 7 loosens the screw 29 in the third embodiment (FIG. 9) to form the plane of the rail 7 and the shaft 6. The angle can be adjusted so as to be θ5 in FIG. 22, and the vertical plane including the rolling line 3 and the inclination angle of the shaft 6 can be set to θ2 as shown in FIG. 22 in use. As described above, the golf practice device according to the present embodiment can perform hitting practice while standing on the rolling line 3 and reciprocating the head 4 in an arc in a plane tilted toward the practitioner. In this way the head 4
Although the batting method of entering the trainee side from the rolling line 3 is suitable for a short approach, etc., it is an irregular batting method in putting. However, especially for elderly enthusiasts and the like, the regularity of putting that the head 4 is constantly reciprocated within the vertical plane set on the rolling line 3 is difficult for physical functioning. Trainers are useful for the elderly lover.

FIG. 25 is a partial perspective view of a golf practice device which constitutes an eleventh embodiment of the present invention. FIG. 26 is a partial perspective view of the connecting structure of the head 4 and the rail body 7 of FIG. 25, seen from below. In FIGS. 25 and 26, the rail body 7 is bent over the entire length with a radius of curvature substantially equal to the arcuate trajectory drawn by the bottom portion of the head 4 as in the case of the fifth embodiment.
Take-back end point part 1 at the front and rear ends of
Two are provided. As shown, a mounting seat 36 for the head 4 and a mounting seat 37 for the shaft 6 are provided at a substantially middle portion of the rail body 7, and a loose hole 38 is formed in the mounting seat 36 of the head 4. The head 4 is a front surface or a rear surface (X side surface, -X side surface)
Both are formed as a striking surface 5. The head 4 has a female screw hole (not shown) on the lower side, and is fixed to the rail body 7 by screwing a screw 39 inserted through the loose hole 38 into the female screw hole. The shaft 6 is attached to the shaft attachment seat 37 so as to face upward, and is fixed to the rail body 7.

The golf practice device according to the eleventh embodiment of the present invention having the above-described configuration can be used by both right-handed and left-handed practitioners.

FIG. 27 is an exploded perspective view of a golf practice device according to a twelfth embodiment of the present invention. In the figure, 6 is a conventional putter shaft, 4 is a head integrally attached to the lower part of the shaft 6, 5 is a striking surface of the head 4, 44a, 44
b is a one-to-two split clamp, 44c is a clamp 44b
Of the flat seat (the plane direction is substantially the same as the striking surface 5) provided on the -X side of the screw, 45 is a screw for tightening the clamps 44a and 44b, and 46 is a female screw hole formed in the flat seat 44c in the X direction. , 47 is a screw, 48 is a ring washer, 49 is a ring washer 4
8 is a round bar fixed in the Z direction, 50 is a tubular member fitted to the outside of the round bar 49 so as to be rotatable and slidable, and 51 is a female screw drilled in the upper seat of the tubular member 50. A hole, 52 is a push bolt for fixing the cylindrical member 50 and the round bar 49, and a rail 7a is fixed to the cylindrical member 50 at the rear end as shown in the drawing and extends under the head 4 to the front (X side) of the impact. The pair of clamps 44a and 44b are fixed to the shaft 6 by tightening screws 45, and are a body component.
8 is fixed by a screw 47. Cylindrical member 50 and round bar 4
9 is fixed by screwing a push bolt 52 into the female screw hole 51. As described above, the rail body 7 is fixed to the shaft 6 and the head 4.

The golf practice device according to the twelfth embodiment of the present invention is configured as described above, and the practitioner can practice by attaching the rail 7 to each putter that he or she loves as necessary. The adjustment of each part prior to the practice will be described. After loosening the screw 47 and rotating the washer 48 by an appropriate angle to adjust the inclination angle θ2, the screw 47 is tightened again to fix the washer 48 and the clamp 44b. Loosen the screw 52 and rotate the rail 7 around the round bar 49 by an appropriate angle to adjust the tilt angle θ1. At the same time, the tubular member 50 is shifted in the Z direction by an appropriate dimension so that the center of the rail body width direction and the center of the striking face 5 are aligned in a plane, and the screw 52 is again adjusted.
Tighten and fix so that the tilt angle θ1 does not change.

Next, the cross-sectional structure of the rail body 7 can be implemented in various forms other than the embodiments described above. The following is the first
Examples of the cross-sectional structure of the rail body 7 that can be used in Examples to 12th Example and the modified examples described below will be described.

FIG. 28 is a partial perspective view showing a first example of the rail body 7,
FIG. 29 is a sectional view taken along line FF of FIG. 28. FIG. 28,
In FIG. 29, the rail body 7 is composed of two rail body constituting members 7f spaced apart in the width direction (Z direction), and the rail body constituting member 7f further comprises two rail body constituting members 7f ', 7f.
f ″. A groove is formed in the inside of the rail body component 7f ′ in the longitudinal direction of the rail body 7 as illustrated, and a thin strip-shaped transparent rail body component member 7f ″ is appropriately formed in the groove. It is tightly inserted. If necessary, the rail member 7f "can be removed from the groove and replaced with a member having a different band width. The rail member 7f 'has a reinforcing function.
Reference numeral 8f denotes a portion which comes into contact with the surface of the ball 1 when the ball rolls on the rail body 7, and is an edge line formed on the rail body constituting member 7f ″. The first example of the rail body 7 is configured as described above. Therefore, if necessary, the rail body constituting member 7f ″ can be replaced with one having a different band width to adjust the interval between the edge lines 8f to change the control accuracy of a series of operations such as take back and swing. Further, the rail body constituting member 7f 'is the ball 1
The width in the Z direction can be widened regardless of the diameter of the rail, and since the rail body constituting member 7f ″ is a transparent member, the rail body 7 does not obstruct the front portion of the head 4 and the ground 2 (floor 2 below the floor). Etc.) can be seen through.

FIG. 30 is a cross-sectional view showing a second example of the rail body 7, and FIG.
The figure is a cross-sectional view showing a state in which the ball 1 is placed on the rail body 7 of FIG. In Fig. 30 and Fig. 31, the rail body 7 is composed of two rail body constituent members 7g spaced apart in the width direction, and each rail body constituent member 7g is further composed of two rail body constituent members 7g ', 7g ". Inside the rail body component 7g 'having a reinforcing function, rubber or soft vinyl having an appropriate width as shown in the drawing may be flexible in the Y direction or may have spring elasticity in the Y direction. A flexible rail body constituting member 7g ″ is attached so as to hang down toward a substantially central portion. 8 g is a portion that comes into contact with the surface of the ball 1 when the ball rolls on the rail body 7, and
g "is a surface portion formed on a part of the g". Further, as shown in Fig. 30, the bottom portion of the rail body 7 is located above the ground 2 by a dimension b, and the rail body constituting member 7g 'is covered by the ball 1. In the free state, it is located above the bottom of the rail body 7 by a dimension H1. The second example of the rail body 7 is configured as described above, and the rail body 7 is the sum of the dimension b and the dimension H1 during putting. 7g ″ even if it descends only downward
Bends as indicated by the phantom line, so that the rail body 7 does not rub the ground 2 with an excessive force. Further, in this example, when the rail body 7 moves upward from the position shown by the solid line by the dimension H2, a part of the rail body constituting member 7g ″ contacts the surface of the ball 1 as shown by the phantom line. Height direction (Y
The rail body 7 having flexibility in the direction) is higher than the rail body 7 of the above-described embodiments having no flexibility, and has an allowable height that allows the rail body 7 to move up and down without contacting the ball 1. The range can be made large, and the error in the height direction of the rail body 7 during a series of operations such as take-back and swing can be tolerated to that extent. When the ball 1 rolls on the rail 7, the rail-constituting member 7 depends on the weight of the ball 1 as shown in FIG.
g "bends, and the ball 1 comes into contact with the rail body constituting member 7g" at a wide portion having a width and receives a large resistance.

FIG. 32 is a partial perspective view showing a third example of the rail body 7.
In the figure, the rail bodies 7 are separated from each other in the width direction in the same manner as described above.
Each of the rail body constituting members 7h is further composed of two rail body constituting members 7h 'and 7h ". Inside the rail body constituting member 7h' having a reinforcing function, Is attached so that a thin sheet-shaped rail body constituting member 7h ″ having an appropriate elasticity hangs down toward a substantially central portion, and the rail body constituting member 7h ″ is cut from the inner edge 8h thereof at regular intervals in the width direction. As a whole, it is formed in a comb-like shape as shown in the drawing.8h is a portion which comes into contact with the surface of the rail 1 when the ball 1 rolls on the rail 7, and is formed discontinuously in the longitudinal direction of the rail 7. The rail body 7 of this example is configured as described above, and when the ball 1 rolls on the rail body 7, it rolls in contact with the comb-teeth-shaped blade edge portion which is discontinuous in the longitudinal direction, so that a greater rolling resistance is exerted on the ball. You can also hit the rolling ball It feels similar to practical green for dance with comb-shaped rail having a can be obtained.

FIG. 33 is a sectional view showing a fourth example of the rail end body 7. FIG. 34 is a sectional view showing a state in which the ball 1 is placed on the rail body 7 of FIG. 33, and FIG. 35 is a partial perspective view of the rail body 7 having the cross section of FIG. 33. 33, 34 and 35, the rail body 7 is composed of two rail body constituting members 7i spaced apart in the width direction, and each rail body constituting member 7i further comprises two rail body constituting members 7i. ′, 7i ″. Brush material 7i ″ is planted in the rail body constituting member 7i ′ which has a reinforcing function as shown in the figure. Reference numeral 8i denotes a brush surface with which the surface of the ball 1 contacts when the ball 1 rolls on the rail body 7. The rail body 7 configured as in this example can exert a great resistance on the rolling ball 1, and the ball rolling so as to jump on the brush behaves as if rolling on the green in practical use. The rail body constituting member 7i 'is provided high in the shape of a fence as shown in the figure in order to prevent a ball rolling on the brush from rolling in the width direction of the rail body 7.

FIG. 36 is a sectional view showing a fifth example of the rail body 7. In the figure, the rail body 7 is composed of two rail body constituting members 7j spaced apart in the width direction. Reference numeral 8j denotes a contact portion with which the surface of the ball 1 contacts when the ball 1 rolls on the rail body 7 as shown in the figure.
It is set up in several places.

FIG. 37 is a sectional view showing a sixth example of the rail body 7. In the figure, the rail body 7 is composed of two rail body constituting members 7k spaced apart from each other in the width direction, and each rail body constituting member 7k is further composed of two rail body constituting members 7k 'and 7k ".
The rod-shaped rail body constituting member 7k 'having a reinforcing function is pierced through the hole of the rail body constituting member 7k ". The rail body constituting member 7k" is made of appropriately soft rubber, soft vinyl or the like. The rail body 7 of this example is configured as described above, and in the case of forming a curved rail body, the rail body member 7 that is bent is formed.
It can be manufactured by piercing k'through a straight-formed rail body constituting member 7k ". Therefore, the rail body 7 can be manufactured at low cost.

FIG. 38 is a sectional view showing a seventh example of the rail body 7. In the figure, the rail body 7 is two rail bodies 7 separated in the width direction.
It is composed of a constituent member 7m. 8m is rail 7 ball 1
Is the part that contacts the ball surface when rolling
Is formed with a width along the surface of the ball at the inner edge of the.

In the above embodiments, the rail body 7 is mainly connected to the head 4, and the shaft 6 is connected to the head 4. However, the shaft 6 may also be connected to the rail body 7, in which case the head 4 is connected to the rail body 7 or the shaft 6.
It does not matter which one is connected. That is, in the first embodiment (FIGS. 1, 2, and 3), the rail body 7 is connected to the head 4, and the shaft 6 is connected to the head 4. In the case of this connection mode, in the third embodiment (FIG. 9), the rail body 7 is indirectly connected via the top 25 and the L-shaped member 20. In the eleventh embodiment (FIG. 25), the shaft 6 is connected to the rail body 7 and the head 4 is connected to the rail body 7. Further, the twelfth embodiment (Fig. 27) is a rail body 7.
And the head 4 are both connected to the shaft 6, especially the rail 7
Is indirectly connected to the shaft 6 via a ring washer 48, a round bar 49, etc.
Are linked to. As described above, the rail body 7, the head 4,
When the shaft 6 is connected, the connection may be direct, or may be indirectly connected by interposing another member, and further, the rail 7, the head 4, and the shaft 6 may be connected. They may be integrally formed and connected. As described above, in the golf practice device of the present invention, the combination of the rail body 7, the head 4 and the shaft 6 is completely free,
The three elements of the rail 7, the head 4, and the shaft 6 may be combined as separate members, or any one of the three elements may be integrally formed. It is also possible to integrally configure all three elements from the beginning.

Next, the shaft 6 does not need to linearly extend upward as in the above-described embodiments, and the train is provided so that the trainee can grasp and swing above the combination of the rail body 7 and the head 4. It may be bent as long as it is provided upward from the body 7 and the head 4, that is, ultimately upward. FIG. 39 is an overall perspective view showing a modified example of the golf practice device of the present invention, and shows a mode in which the shaft 6 is bent as described above and extends upward finally. In the figure, one of the two rod-shaped members 7n constituting the rail body 7 is bent upward at the rear (-X side) of the head 4 and extended upward as shown to form a shaft 6. In this case, the curved rod-shaped member is a part of the shaft 6. Rail body 7
Is formed by folding back the rod-shaped member 7n at the take-back end portion 12. 6'is an intersection of the extension line of the upper portion of the shaft 6 and the head 4, and is essentially a point to be considered as the root of the shaft 6. In this modification, the case where the shaft 6 and the rail 7 are integrally formed by using the same member is also shown.

The golf practice device of the present invention has been disclosed above by various embodiments. Of the three elements constituting the golf practice device of the present invention, especially the head and the shaft are dedicated to the golf practice device of the present invention and are combined with the rail body from the beginning. Can be manufactured by
Alternatively, it may be configured so that the lovers themselves can attach a railroad body to practice for practical use putters of the lovers, each of which includes a conventional pattern shaft and a putter head. As a means for easily attaching the rail body to the head or shaft of the conventional putter, there is a method of magnetically attracting a part of the conventional putter and the rail body.

Furthermore, although the description so far has mainly described the action and effect of the golf practice device of the present invention through the putting action, the action of swinging out the same trajectory as the backswing trajectory is a regular rule for all golf swings, not just putting. This is true not only when using putters but also when using all golf clubs. From this point of view, the golf practice device of the present invention can practice light ball hitting with a small backswing even when using an iron club or a wood club.

Further, the present invention can be applied to a golf practice device, a gate ball practice device that closely resembles putting, a health device that easily hits a ball, a playground device, etc., as long as it has an equal configuration, action, and effect.

[Brief description of drawings]

1 to 7 are views showing a golf practice device according to a first embodiment of the present invention. FIG. 1 is a front view and FIG. 2 is an A- line in FIG.
Fig. 3 is a plan view, Fig. 4 is a sectional view taken along the line BB of Fig. 1, Fig. 5 is a sectional view taken along the line CC of Fig. 1, Fig. 6 is an overall perspective view, and Fig. 7 FIG. 7 is an inverted partial perspective view showing a method of fixing the rail body and the head. FIG. 8 is a partial perspective view of a golf practice device which constitutes a second embodiment of the present invention. FIG. 9 and FIG. 10 are views showing a golf practice device which is a third embodiment of the present invention, and FIG. 9 is a partial exploded perspective view showing a connecting structure of a head, a rail body and a shaft. The figure is a plan view showing a state in which the rail body direction is adjusted with respect to the head striking surface. FIG. 11 and FIG. 12 are views showing a golf practice device according to a fourth embodiment of the present invention. FIG. 11 is a view showing a head and a part of a railroad body cut by a vertical plane standing on a rolling line. FIG. 12 is a partial cross-sectional view taken at a right angle to the vertical plane, and FIG. 12 is a partial perspective view showing a portion excluding the head from FIG. FIGS. 13 and 14 are views showing a golf practice device according to a fifth embodiment of the present invention. FIG. 13 is a partial perspective view, and FIG. 14 shows a connecting structure of the head and the rail body of FIG. It is a partial perspective view seen from below. 15 and 16 are views showing a golf practice device which constitutes a sixth embodiment of the present invention. FIG. 15 is a front view and FIG. 16 is a plan view. FIG. 17 is a front view showing a golf practice device which constitutes a seventh embodiment of the present invention. FIG. 18 is a front view showing a golf practice device which constitutes an eighth embodiment of the present invention. FIG. 19 is a front view of a golf practice device which constitutes a ninth embodiment of the present invention. 20, FIG. 21, FIG. 22, and FIG. 23 are views showing a golf practice device which constitutes a tenth embodiment of the present invention. FIG. 20 is a front view, FIG. 21 is a plan view, and FIG. Is D- in FIG.
23 is a sectional view taken along line EE in FIG. 21. FIG. 24 is a cross-sectional view of a rail body showing a modified example of the golf practice device according to the tenth embodiment of the present invention. 25 and 26 are views showing a golf practice device which is an eleventh embodiment of the present invention. FIG. 25 is a partial perspective view, and FIG. 26 shows a connecting structure of a head and a rail body of FIG. It is the fragmentary perspective view seen from lower part in the figure. FIG. 27 is an exploded perspective view of a golf practice device according to a twelfth embodiment of the present invention. 28 to 38 are views showing a railroad body that can be used in the golf practice device of the present invention, FIG. 28 is a partial perspective view showing a first example of the railroad body, and FIG. 29 is F- of FIG. F sectional view, 30th
FIG. 31 is a sectional view showing a second example of the railway body, FIG. 31 is a sectional view showing a state in which a virtual ball is placed on FIG. 30, and FIG. 32 is a partial perspective view showing a third example of the railway body. FIG. 34 is a cross-sectional view showing a fourth example of the railroad body, FIG. 34 is a cross-sectional view showing a state in which a virtual ball is placed on FIG. 33, FIG. FIG. 36 is a sectional view showing a fifth example of the railway body, FIG. 37 is a sectional view showing a sixth example of the railway body, and FIG. 38 is a sectional view showing a seventh example of the railway body. FIG. 39 is an overall perspective view of a golf practice device which is a modified example of the present invention, and shows a case where a curved shaft and a rail body are integrally formed. 1 ... Virtual ball, 2 ... Ground, 3 ... Virtual rolling line, 4 ... Head, 5 ... Hitting surface, 6 ... Shaft, 7 ... Rail body, 8 ... When ball rolls on rail body The contact area that contacts the body.

Claims (1)

[Claims] 1. A shaft, a head provided below the shaft, and a rail body disposed in a direction substantially extending from the head, the rail body having a width smaller than a diameter of the ball in the width direction. In a golf practice device that is composed of two rail body constituent members that are spaced apart from each other and arranged substantially parallel to each other, and that by swinging out the shaft, the head and the rail body can be swing out integrally with the shaft. When the two rail body constituting members are placed so as to straddle the ball on the two rail body constituting members, the lower portion of the ball projects downward from the bottom portion of the rail body, With the lower end of the protrusion placed on the ground or floor, the rail can be moved back and forth without touching the ball, and the ball can be hit with the hitting surface of the head without the rail touching the ball. Golf practice device, characterized by being configured by arranging the interval.