JP2006288793A - Club for park golf - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a club head for park golf which enables the simple and correct array of the positions of the centers of gravity of heads massproduced. <P>SOLUTION: The club for park golf has a through hole bored in a wood base material of a head of the club, a weight for adjusting the center of gravity which is slidably disposed in the through hole and a center of gravity adjusting mechanism comprising a cone moving/fixing means for moving or fixing the weight in the through hole. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a park golf club, and more particularly to a park golf club provided with a weight in the club head for adjusting the center of gravity of the club head.

  Park golf was proposed as a competition that can be performed on lawns such as parks and riverbeds based on conventional golf. Therefore, just like golf, you can compete in how many strokes you can take from the starting point and go around the course.

  Park golf is often played in parks or riverbeds where there are many people other than players, so in consideration of safety, the clubs used also have a ball striking face (face face) so that the hit ball does not fly up. It is characterized by using a synthetic resin larger than a normal golf ball and rolling the ground surface without adding a loft (inclination angle) to the surface.

  The synthetic resin ball has a diameter of 6 cm and a weight of 80 to 95 g, which is considerably larger than a normal golf ball. This club that hits a large ball is made in accordance with the rules of the International Park Golf Association (IPGA) and has a weight of 600 g or less and a length of 86 cm or less (the length from the tip of the mounting grip end to the bottom of the head on the shaft axis). The club head is made of wood (it is permissible to reinforce the hitting surface with synthetic resin), and the height from the bottom surface to the upper end of the face surface reinforcing plate at the center of the hitting surface must be 53 mm or more. It is prescribed.

  Since the head needs to be woody in this way, natural wood such as firewood or a pressure-bonded plate is used, so that the position of the center of gravity is different even if cut out to the same outer dimensions. Therefore, in order to adjust and align the position of the center of gravity, it is necessary to embed an appropriate weight in the wood base material of the head or attach a metal plate. Conventionally, for this reason, weights and metal pieces of different materials and sizes are used. Several types are prepared, and a weight or a metal piece having an appropriate weight and size is selected and attached.

Furthermore, in order to bring the center of gravity of the head closer to the bottom surface, a weight addition portion made of a band-shaped metal piece or resin molded product having a specific gravity and a Young's modulus greater than that of wood as the main material on the bottom surface of the head tip (toe) and rear end (heel) portions. There was also a fixed head.
Japanese Patent No. 3466510

  However, in order to adjust and align the center of gravity of the club head, the work of embedding an appropriate weight or attaching a metal piece to the head each time is very cumbersome. It was necessary to prepare several types of clubs, which led to an increase in club costs.

The inventor of the present application has solved this problem by the following means as a result of intensive studies in view of the above.
(1) In a park golf club, the club head includes an insertion hole formed in the wooden base material, and a weight body for adjusting the center of gravity disposed slidably in the insertion hole. A club for golf club comprising a center-of-gravity adjusting mechanism comprising a cone moving / fixing means for moving / fixing a weight in the insertion hole.

  (2) The head includes one or more vertical insertion holes formed vertically from the top surface of the wooden base material, a weight body that can slide up and down within the vertical insertion holes, and the same weight body. The club for golf club according to (1) above, further comprising a vertical center of gravity adjustment mechanism comprising a weight body moving / fixing means for adjusting the amount of movement and fixing at the adjustment position.

  (3) The head is slid vertically or diagonally within one or a plurality of vertically oblique insertion holes drilled in an oblique direction downward from the top surface of the wood base material of the head. The preceding paragraph (1), characterized by comprising a vertically movable center of gravity adjustment mechanism comprising a movable weight body and a weight body moving / fixing means for adjusting the amount of movement of the weight body and fixing the weight body at the adjustment position. The club for park golf as described in.

  (4) The head includes one or a plurality of front and rear direction insertion holes formed in the back surface of the wood base material of the head, a weight body that can slide back and forth within the front and rear direction insertion holes, The park golf club according to item (1) above, comprising a longitudinal center-of-gravity adjusting mechanism comprising a weight body moving / fixing means for adjusting the amount of movement and fixing at the adjustment position.

  (5) The head is slid in the front / rear oblique direction in the front / rear oblique insertion hole, and the front / rear oblique insertion hole formed in the wood base material of the head in the oblique direction from the back to the front. The preceding paragraph (1), characterized by comprising a movable weight body, and a front and rear oblique center of gravity adjustment mechanism comprising a weight body movement / fixing means for adjusting the amount of movement of the weight body and fixing the weight body at the adjustment position. The club for park golf described in 1.

  (6) In the park golf club, the head is either the vertical direction gravity center adjustment mechanism or the vertical inclination direction gravity center adjustment mechanism described in the previous item (2) or (3), and the head item (4) or (5). The club for golf clubs according to item (1) above, further comprising either a front-rear direction center-of-gravity adjustment mechanism or an oblique front-rear direction center-of-gravity adjustment mechanism.

  (7) In a park golf club, the head of the club has a groove formed in the back surface of the wood base material of the head, one or a plurality of cones movable back and forth in the groove, and the cones. The front and rear cone fixing means for adjusting the amount of movement of the lens and fixing it at the adjustment position, and the cone and the front and rear cone movement / fixing means slide left and right within the groove and are fixed at the sliding position. A park golf club characterized by comprising a front / rear and left / right center-of-gravity adjustment mechanism comprising a slide mechanism.

  (8) In the club for a park golf, the head is either the vertical center-of-gravity adjustment mechanism or the vertical oblique center-of-gravity adjustment mechanism described in the preceding item (2) or (3), and the front, rear, left, and right as described in the previous item (7). A park golf club comprising a center of gravity adjustment mechanism.

  (9) The weight unit according to any one of claims 1 to 8, wherein the weight body is fixed by a synthetic resin material or an adhesive material after the movement amount is adjusted by a movement adjustment / fixing means. Park golf club.

  (10) The club for golf club according to (9), wherein the synthetic resin material or adhesive is a thermoplastic synthetic resin material or adhesive.

According to the present invention, the following effects are exhibited.
1. According to the invention of claim 1 of the present invention,
Even though the club golf club head uses natural wood such as firewood or a pressure-bonded plate, the center of gravity is different, even if the head is cut out to the same external dimensions. Since the center-of-gravity adjusting cone inserted in a slidable manner can be easily moved and fixed by the weight moving / fixing means, the position of the center of gravity of the head to be produced in large quantities can be easily and accurately aligned.

  Also, the center of gravity adjustment mechanism comprising the insertion hole, cone, and cone moving / fixing means can easily move and fix the center of gravity of the head to an arbitrary position within a certain range. Accordingly, the position of the center of gravity of the head can be accurately moved / positioned to the position where the player can play most easily, so that the ball can be correctly caught at the sweet spot and hit straight. Therefore, even a person with low technical ability or physical strength can easily play.

  Furthermore, since the center of gravity of the head can be lowered, even when the sweet spot is removed and the ball is hit, the head is difficult to rotate around the shaft, and the direction of the hit ball is stabilized. Therefore, even a person with low technical ability or physical strength can easily play.

  Furthermore, since many weights and metal pieces of different materials and sizes are arranged, and the head is processed each time to embed the weight and attach the metal pieces, the workability is improved and the club is improved. Cost reduction can be achieved.

2. According to the invention of claim 2 of the present invention,
In addition to the effect of the first aspect, even if the heads have the same outer dimensions, the positions of the centers of gravity that vary vertically are respectively inserted into one or more vertical insertion holes that are vertically drilled from the top surface of the wood base material of the head. The center of gravity adjustment cone that is slidably inserted can be easily moved up and down by the weight movement / fixing means, so that the variation in the center of gravity of the head to be produced in large quantities can be adjusted easily and accurately. Can be arranged.
In addition, since the cone for adjusting the center of gravity can be easily moved up and down and fixed, the center of gravity of the head can be accurately moved and adjusted to the position where the player can play most easily according to the player's request. You can also catch it straight.

3. According to the invention of claim 3 of the present invention,
In addition to the effect of claim 1, one or a plurality of heads whose center of gravity varies in the diagonally up and down direction, even in the same external dimensions, are drilled diagonally downward from the top surface of the wood base material of the head. The center-of-gravity adjustment cone that is slidably inserted into the up-and-down slant direction insertion hole can be easily moved and fixed in the up-and-down slant direction by the weight moving / fixing means, so that the center-of-gravity position of mass-produced heads is slanted up and down It is possible to adjust and align the direction blur easily and accurately.
In addition, since the cone for adjusting the center of gravity can be easily moved and fixed in an up-and-down diagonal direction, the center of gravity of the head is accurately moved and adjusted to the position where the player can play most easily according to the player's request. It is also possible to capture the right and hit it straight.

4). According to the invention of claim 4 of the present invention,
In addition to the effect of the first aspect, even if the heads have the same outer dimensions, the positions of the centers of gravity, which vary forward and backward, are slid in one or more vertical insertion holes formed in the back of the wood base material of the head. The center of gravity adjustment cone that can be inserted can be easily moved back and forth by the weight moving / fixing means, so that the variation in the center of gravity of heads produced in large quantities can be adjusted easily and accurately. be able to.
In addition, since the cone for adjusting the center of gravity can be easily moved back and forth and fixed, the center of gravity of the head can be accurately moved and adjusted to the position where the player can play most easily according to the player's request. You can also catch it straight.

5. According to the invention of claim 5 of the present invention,
In addition to the effect of claim 1, one or a plurality of upper and lower upper and lower holes drilled from the back of the wood base material of the head obliquely forward to the center of gravity position that varies in the front-rear oblique direction even for heads having the same external dimensions. The center-of-gravity adjustment cone that is slidably inserted into the direction insertion hole can be moved and fixed in the diagonal direction easily by the weight moving / fixing means, so the variation of the gravity center position of the head to be produced in large quantities is possible. Can be adjusted easily and accurately.
In addition, since the cone for adjusting the center of gravity can be easily moved and fixed obliquely in the front-rear direction, the center of gravity of the head can be accurately moved and adjusted to the position where the player can play most easily according to the player's request. It is also possible to capture the right and hit it straight.

6). According to the invention of claim 6 of the present invention,
In addition to the effect of claim 1, even if the heads have the same outer dimensions, the positions of the centers of gravity are different from each other with either the vertical center-of-gravity adjustment mechanism or the vertical diagonal center-of-gravity adjustment mechanism and the front-rear direction center of gravity adjustment mechanism or the front-back diagonal. By using in combination with any of the direction center of gravity adjustment mechanism, the cone that moves up and down or diagonally up and down and the cone that moves forward and backward or diagonally forward and backward can be easily moved and fixed by the respective cone movement and fixing means, The center of gravity of heads that are produced in large quantities can be easily and accurately adjusted and aligned.
In addition, since the position of the center of gravity can be easily moved and fixed by using either the vertical center-of-gravity adjustment mechanism or the vertical oblique center-of-gravity adjustment mechanism and either the front-rear direction gravity center adjustment mechanism or the front-back oblique direction gravity center adjustment mechanism, According to the player's request, the center of gravity of the head can be accurately moved and adjusted to the position where the player can play most easily, so that the ball can be caught correctly and hit straight.

7). According to the invention of claim 7 of the present invention,
Because the head of the park golf club uses natural wood such as cocoons and pressure-bonded plates, the center of gravity is scattered in the back of the wooden base material of the head, even if the head has the same external dimensions. Center of gravity in the front-rear direction comprising a groove, one or a plurality of cones that can move back and forth within the groove, and a front-rear cone moving / fixing means that adjusts the amount of movement of the cone and fixes it at the adjustment position Since the adjusting mechanism has a slide mechanism that slides left and right in the groove and fixes, the cone can be easily moved back and forth, left and right, and the center of gravity of the head to be produced in large quantities can be easily and It can be aligned accurately.
In addition, since the center of gravity position can be easily moved back and forth, left and right by the front / rear / left / right center of gravity adjustment mechanism, the head's center of gravity can be accurately moved / localized to the position where the player can play most easily according to the player's request. You can also catch the ball correctly and hit it straight.

8). According to the invention of claim 8 of the present invention,
The center of gravity adjustment mechanism of each center of gravity adjustment mechanism is equipped with a vertical center-of-gravity adjustment mechanism or an up-down diagonal center-of-gravity adjustment mechanism, a front-rear direction center-of-gravity adjustment mechanism, and a slide mechanism that slides the front-rear direction center-of-gravity adjustment mechanism left and right. Along with adjusting the fixing position of the cone, the center of gravity of the head can be moved easily by sliding the center of gravity adjustment mechanism to the left and right. Can do.
In addition, the center of gravity of the head can be easily moved by adjusting the fixing position of the center of gravity adjusting cone of each center of gravity adjusting mechanism and sliding the front and rear direction center of gravity adjusting mechanism to the left and right. The center of gravity of the head can be accurately moved and localized to the position where the player is most likely to play, so that the ball can be caught correctly and hit straight.

9. According to the invention of claim 9 of the present invention,
The weight inserted into the insertion hole or groove is moved and adjusted by the respective cone moving / fixing means, and then fixed to the insertion hole or groove with a synthetic resin material or adhesive. The possibility that the body moves and the center of gravity and the position of the sweet spot change is eliminated.

10. According to the invention of claim 10 of the present invention,
In addition to the effect of the ninth aspect, since a thermoplastic synthetic resin material or adhesive is used for the synthetic resin material or adhesive, the position of the center of gravity or sweet spot is repeatedly adjusted and fixed according to the player's request. be able to.

The best mode for carrying out the present invention will be described with reference to the drawings of the embodiments.
FIG. 1 is a block diagram of an embodiment of a head provided with a vertical center of gravity adjustment mechanism capable of moving, adjusting and fixing a weight body for adjusting the center of gravity up and down in the park golf club of the present invention. FIG. FIG. 3 is a configuration diagram of an embodiment of a head having a longitudinal center of gravity adjustment mechanism that moves, adjusts, and fixes a weight body for adjusting the center of gravity back and forth in FIG. 3, and FIG. 3 shows the vertical center of gravity adjustment mechanism and the longitudinal direction in the park golf club of the present invention. FIG. 4 is a block diagram of an embodiment of a head equipped with a center-of-gravity adjustment mechanism. FIG. 4 is a block diagram of an embodiment of a head equipped with a plurality of vertical center-of-gravity adjustment mechanisms and front-back direction center-of-gravity adjustment mechanisms in the park golf club of the present invention FIG. 5 is a diagram of a head equipped with a front / rear and left / right center-of-gravity adjustment mechanism for moving / adjusting / fixing the center of gravity adjustment cone in the front / rear / left / right direction in the park golf club of the present invention. Example is a configuration diagram of a.
In the figure, 1 is a head, 2 is a shaft fitting hole, 3 is a face reinforcement plate, 4 is a bottom reinforcement plate, 5 is a lid, 6 is a back plate, 7 is a heel, 8 is a toe, and 11 is inserted vertically. Holes, 12 are insertion holes in the front-rear direction, 13 are insertion holes in the oblique direction, 14 is a female screw, 15 is a weight, 16 is a groove, 21 is an adjustment screw, 22 is a flange, 23 is an adjustment screw fixing plate, 24 is A slide hole, 25 is a nut, and 26 is a weight.

As a first embodiment of the park golf club of the present invention, a club golf club having a head provided with a vertical center of gravity adjustment mechanism capable of moving, adjusting and fixing the weight body 15 for adjusting the center of gravity up and down will be described.
The head 1 of this embodiment is for fitting a shaft for inserting and fixing a shaft on the upper surface of a wooden base material formed by cutting natural wood such as a firewood or a pressure bonding plate in the same manner as a conventional head. A hole 2 is formed, and a face surface reinforcing plate 3 made of a synthetic resin material such as FRP having a thickness of 8 mm or less is screwed to the front surface (face surface), and a shaft axis line with a depth of 40 mm or more from the ball striking surface on the bottom surface. The bottom reinforcing plate 4 made of metal or the like has a length of 40 mm or more on the heel 7 side from the shaft (the length on the toe 8 side is arbitrary from the shaft axis line) and is attached so as to form a surface perpendicular to the face surface. It is considered that the loft angle of the surface can be measured. Further, a metal back plate 6 made of a cast product such as an aluminum die cast for weight adjustment and a balancer is screwed to the back surface.

As described above, the head 1 of the wood base material formed into a predetermined shape by cutting natural wood such as firewood or a pressure-bonded plate has a constant position of the center of gravity of the wood base material even if it has the same external dimensions. In addition, since various reinforcing plates and plates are attached to the cut wood base material as described above, the position of the center of gravity as the head 1 is also shifted. Therefore, it is necessary to adjust the position of the center of gravity which has been scattered or shifted so that the player can easily hit the club.
In this embodiment, as a means for adjusting the position of the center of gravity, as shown in the top view of FIG. 1A, it is perpendicular to the top surface of the head 1 behind the shaft fitting hole 2 and from the top surface to the bottom surface. That is, a vertical insertion hole 11 is formed parallel to the surface of the face surface reinforcing plate 3, and a weight body 15 for adjusting the center of gravity can be moved and fixed to a female screw 14 screwed on the inner wall thereof. The vertical center of gravity adjustment mechanism screwed in is provided.

The weight body 15 for adjusting the center of gravity is screwed into a predetermined position of the insertion hole 11 in the vertical direction, and then fixed with a thermoplastic synthetic resin material or an adhesive.
The weight adjusting body 15 is preferably made of a material having a large specific gravity, such as lead, tungsten, gold, silver, or platinum.

  After the weight body 15 for adjusting the center of gravity is fixed to a predetermined position of the insertion hole 11 in the vertical direction, the lid 5 is screwed into the insertion hole 11 until the upper surface thereof coincides with the upper surface of the head 1 and sealed. As with the weight 15, it is fixed with a thermoplastic synthetic resin material or an adhesive.

  The synthetic resin material or adhesive is a material having a linear polymer structure that softens when heated and hardens at room temperature, for example, styrene-based, acrylic-based, cellulose-based, polyethylene-based, vinyl-based, nylon-based thermoplastics, etc. Therefore, it is possible to repeatedly adjust and fix the center of gravity of the head 1 and the position of the sweet spot according to the player's request.

In this embodiment, the head has a vertical center of gravity adjustment mechanism in which the vertical insertion hole 11 is vertically drilled from the top surface to the bottom surface of the head 1 and a cone 15 for adjusting the center of gravity is screwed therein. Although the case where it is provided has been described, the present invention is not limited to this, and the center of gravity is placed in the insertion hole in which the head 1 is bored with an inclination in the front-back, left-right, or diagonal directions with respect to the surface of the face surface reinforcing plate 3. It may be provided with a vertical center-of-gravity center-of-gravity adjustment mechanism into which an adjustment cone 15 is screwed.
Further, in the present embodiment, the head 1 having one of the vertical direction gravity center adjustment mechanisms has been described, but the head 1 having two or more vertical direction gravity center adjustment mechanisms may be used, and the vertical inclination direction gravity center adjustment may be performed. The head 1 having a plurality of mechanisms may be used.

The second embodiment of the park golf club of the present invention has a head 1 having a longitudinal center-of-gravity adjustment mechanism that can move, adjust, and fix the weight adjustment body shown in FIG.
As shown in FIG. 2, the head 1 of the present embodiment is drilled in a direction perpendicular to the surface of the face surface reinforcing plate 3 from the back surface of the head 1 to the face surface, as shown in FIG. A longitudinal center-of-gravity adjusting mechanism is provided in which a weight 15 for adjusting the center of gravity is screwed into a female screw 14 screwed to the inner wall of the insertion hole 12 in the front-rear direction so that the weight 15 for center of gravity adjustment can be moved and fixed in the front-rear direction.
The weight body 15 for adjusting the center of gravity is screwed to a predetermined position of the insertion hole 12 in the front-rear direction, and then fixed with a thermoplastic synthetic resin material or an adhesive. Further, the lid 5 is inserted into the insertion hole 12 in the front-rear direction. Is screwed and sealed until the front surface and the back surface of the head 1 coincide with each other, and is fixed with a thermoplastic synthetic resin material or an adhesive as in the case of the weight body 15. The weight 15 for adjusting the longitudinal center of gravity position is preferably made of a material having a large specific gravity, for example, lead or the like.

In this embodiment, the head 15 is screwed with a cone 15 for adjusting the center of gravity into the insertion hole 12 in the front-rear direction drilled in a direction perpendicular to the surface of the face surface reinforcing plate 3 from the back surface to the face surface. However, the present invention is not limited to this, and the head is not limited to this, and the center of gravity is inserted into the insertion hole formed with the head tilted in the front-rear, left-right, or diagonal directions. It may be provided with a front and rear oblique center of gravity adjusting mechanism into which the adjusting cone 15 is screwed.
In this embodiment, the head 1 having one longitudinal centroid adjustment mechanism has been described. However, the head 1 having two or more longitudinal centroid adjustment mechanisms may be used. The head 1 provided with a plurality of may be used.
The other configurations and operations are the same as those in the first embodiment.

As shown in FIG. 3, the third embodiment of the park golf club of the present invention is provided with the vertical center-of-gravity adjustment mechanism described in Example 1 and the longitudinal center-of-gravity adjustment mechanism described in Example 2. The head 1 is provided.
The configuration and operation of the vertical center-of-gravity adjustment mechanism and the longitudinal center-of-gravity adjustment mechanism of this example are as described in Example 1 and Example 2, and natural wood such as firewood and pressure bonding plates are cut out to the same external dimensions. The position of the center of gravity of the head 1 is easily moved, adjusted, and fixed by the vertical center of gravity adjustment mechanism and the front-rear direction center of gravity adjustment mechanism. It can also be positioned to the position where it is easiest to hit according to the player's request.
Although FIG. 3 shows a case where one vertical centroid adjustment mechanism and one longitudinal centroid adjustment mechanism are used together, a plurality of either one or both of the vertical centroid adjustment mechanism and the longitudinal centroid adjustment mechanism are provided. The head 1 may be used.
The other configurations and operations are the same as those in the first embodiment.

As shown in FIG. 4, the fourth embodiment of the park golf club of the present invention has a head 1 having a plurality of upper and lower diagonal center of gravity adjustment mechanisms and a plurality of longitudinal center of gravity adjustment mechanisms.
In this embodiment, an angle approximate to the inclination angle of the shaft fitting hole 2 is provided behind the shaft fitting hole 2 of the head 1, parallel to the surface of the face surface reinforcing plate 3 from the surface to the bottom surface. Two insertion holes 13 in the up and down diagonal direction are formed in a symmetrical manner with respect to the central axis surface of the head 1, and the female screw 14 threaded on the inner wall of the insertion hole 13 in the up and down diagonal direction is provided. A pair of vertical center-of-gravity adjustment mechanisms screwed so that the weights 15 for adjusting the position of the center of gravity can be moved and fixed in the vertical and diagonal directions are provided, and from the back of the head 1 the face faces toward the face surface. Two insertion holes 12 in the front-rear direction are formed in a direction perpendicular to the surface of the surface reinforcing plate 3, and a weight body 15 for adjusting the center of gravity is moved in the front-rear direction on the female screw 14 screwed on the inner wall. A pair of center of gravity in the front-rear direction screwed for fixing It has a settling mechanism.

  The center of gravity position adjusting weight 15 of each of the two center of gravity adjusting mechanisms is screwed to a predetermined position and then fixed with a thermoplastic synthetic resin material or an adhesive, and then each of the two insertion holes has a lid 5 on its surface. Is sealed by screwing in until it matches the upper surface or the back surface of the head 1, and is fixed with a thermoplastic synthetic resin material or an adhesive as in the case of the weight body 15.

  By configuring as in the present embodiment, the position of the center of gravity of the head wood part made by cutting the head 1 into the same external dimensions using natural wood such as firewood or a pressure bonded plate varies in a complicated manner in the vertical direction, the front-rear direction, and the diagonal direction. Even if it is equipped with multiple vertical and vertical center of gravity adjustment mechanisms in the previous term and moving and adjusting and fixing multiple weights easily and delicately, it can move up and down and forward and backward for each head to be produced in large quantities. Furthermore, the position of the center of gravity that varies in all oblique directions can be localized easily, precisely, and accurately, and it can also be localized at the position that is most easily hit according to the player's request.

In the present embodiment, the two vertically inclined center-of-gravity adjusting mechanisms are formed such that the insertion holes 13 in the vertically inclined direction are parallel to the face reinforcing plate and at an angle approximate to the inclination angle of the shaft fitting hole 2. However, the present invention is not limited to this, and the vertical center-of-gravity adjusting mechanism having the vertical insertion hole 11 formed vertically from the top surface to the bottom surface of the head 1 shown in the first embodiment is described. You may use one. In this case, the number of front and rear center-of-gravity adjustment mechanisms provided on the back surface of the head 1 is preferably one, but is not limited thereto.
Furthermore, instead of the front-rear direction center of gravity adjustment mechanism, a front-rear oblique direction center of gravity adjustment mechanism can be used in combination with either the up-down direction center of gravity adjustment mechanism or the up-down direction oblique center-of-gravity adjustment mechanism.
Other configurations and operations are the same as those in the first embodiment.

  As shown in FIG. 5, the fifth embodiment of the park golf club of the present invention moves the cone 26 for adjusting the center of gravity inserted in the groove 16 formed in the back surface of the head 1 in the front-rear direction. And a head 1 having a slide mechanism that slides left and right along the groove 16 as a longitudinal center-of-gravity adjusting mechanism of the fixing means.

In the present embodiment, the groove 16 that allows the front-rear direction center of gravity adjustment mechanism to slide left and right in a direction perpendicular to the surface of the face surface reinforcing plate 3 from the back surface of the head 1 toward the face surface is provided on the heel of the head 1. A flat cone 26 for adjusting the center of gravity is inserted in the groove 16 so as to have a predetermined length along a straight line connecting the tow 8 and the tow 8 and moves back and forth by the rotation of the adjusting screw 21 to be fixed. Has been.
The groove 16 is formed so that when the adjusting screw 21 is rotated, the flat center-of-gravity adjusting cone 26 does not rotate in synchronization with the movement of the adjusting screw. It is formed to a height that is substantially the same as the height.

The adjusting screw 21 is formed as a male screw, and is screwed into a female screw portion screwed into the center of the weight body 26. Therefore, by rotating the adjusting screw 21, the weight body 26 slides back and forth in the groove portion.
On the other hand, an adjustment screw fixing plate 23 in which a slide hole 24 is bored is screwed to the back surface of the head 1 so as to cover the groove portion 16, and the tip of the adjustment screw 21 is inserted into the slide hole 24. The adjusting screw 21 is inserted through the slide hole 24 so as to be slidable left and right.
The adjustment screw 21 has a flange 22. After the adjustment screw 21 is slid left and right along the slide hole 24, the adjustment screw fixing plate 23 is sandwiched between the flange 22 and the nut 25. After that, the adjusting screw 21 and the nut 25, and the nut 25 and the adjusting screw fixing plate 23 are fixed with a thermoplastic synthetic resin material or an adhesive.
In this case, it goes without saying that the back plate 6 is processed into a shape that does not hinder the mounting of the adjusting screw fixing plate 23.

As described above, since the center of gravity of the head of the park golf club can be easily moved by providing the slide mechanism that slides left and right on the same mechanism as the longitudinal center of gravity adjustment mechanism, The center of gravity of heads produced in large quantities can be easily and accurately aligned.
Also, by providing a slide mechanism that slides left and right on the same mechanism as the longitudinal center of gravity adjustment mechanism, the position of the center of gravity of the club golf club head can be easily moved. The center of gravity of the head 1 can also be localized at a position where the player can play most easily.

In this embodiment, a longitudinal center-of-gravity adjusting mechanism for moving and fixing the center-of-gravity adjusting cone 26 inserted in the groove 16 formed in the back surface of the head 1 in the front-rear direction is provided along the groove 16. Although the head 1 having the slide mechanism that slides to the left and right has been described, either one or a plurality of vertical center-of-gravity adjustment mechanisms or top-bottom oblique center-of-gravity adjustment mechanisms may be provided on the upper surface of the head 1.
Other configurations and operations are the same as those in the first embodiment.

Park golf is popular throughout the country as a sport that can be played anywhere, by anyone, and is loved by children and the elderly. The club for club golf of the present invention can be adjusted and fixed easily and accurately so that even a person with low technical ability or physical strength can easily play the position of the center of gravity of a large and heavy club head, and can be provided at low cost. So industrial applicability is great.
This technique can also be applied to a grand golf club or a normal golf club.

Head external view of the club golf club first embodiment of the present invention provided with a vertical center-of-gravity adjusting mechanism capable of moving, adjusting, and fixing the weight body for adjusting the center of gravity up and down. Head external view of a club golf club second embodiment of the present invention provided with a longitudinal center-of-gravity adjusting mechanism for moving, adjusting, and fixing a weight body for adjusting the center of gravity back and forth. Head external view of a third embodiment of the park golf club of the present invention having both the vertical center of gravity adjustment mechanism and the longitudinal center of gravity adjustment mechanism. Head external view of a fourth embodiment of the club for club golf of the present invention having a plurality of vertical center-of-gravity adjustment mechanisms and a plurality of longitudinal center-of-gravity adjustment mechanisms. Head external view of the fifth embodiment of the club golf club of the present invention provided with a slide mechanism that allows the longitudinal center-of-gravity adjustment mechanism to move left and right on the back side of the head.

Explanation of symbols

1: Head 2: Hole for shaft insertion 3: Face reinforcement plate 4: Bottom reinforcement plate 5: Lid 6: Back plate 7: Heel 8: Toe 11: Vertical insertion hole 12: Front and rear insertion hole 13: Insertion hole 14 in the vertical direction 14: female screw 15: cone 16: groove 21: adjustment screw 22: flange 23: adjustment screw fixing plate 24: slide hole 25: nut 26: weight

Claims (10)

  In the park golf club, the club head includes an insertion hole formed in the wooden base material, a weight body for adjusting the center of gravity disposed slidably in the insertion hole, and the weight body. A park golf club comprising a center-of-gravity adjusting mechanism comprising a cone moving / fixing means for moving / fixing within the insertion hole.   The head includes one or a plurality of vertical insertion holes formed vertically from the top surface of the wooden base material, a weight body that can slide up and down in the vertical insertion holes, and a movement amount of the weight body The park golf club according to claim 1, further comprising a vertical center-of-gravity adjustment mechanism comprising a weight body moving / fixing means for adjusting the weight and fixing the weight at the adjustment position.   The head is slidable vertically and obliquely within one or more obliquely inserted holes formed in an oblique direction from the upper surface of the wood base material of the head downward. 2. The vertical center of gravity adjustment mechanism comprising a weight body and a weight body movement / fixing means for adjusting a movement amount of the weight body and fixing the weight body at an adjustment position. Park golf club.   The head includes one or a plurality of front and rear direction insertion holes formed in the back surface of the wood base material of the head, a weight body that can slide back and forth within the front and rear direction insertion holes, and a movement amount of the weight body. 2. The park golf club according to claim 1, further comprising a longitudinal center-of-gravity adjustment mechanism comprising a weight body moving / fixing means for adjusting and fixing at an adjustment position.   The head is slidable in the front-rear diagonal direction within the front-rear oblique direction insertion hole and one or a plurality of front-rear oblique direction insertion holes formed in the head wood base material obliquely from the back to the front. 2. The park according to claim 1, further comprising: a weight body, and a forward / backward oblique center of gravity adjustment mechanism comprising a weight body movement / fixing means for adjusting a movement amount of the weight body and fixing the weight body at an adjustment position. Golf club. In the park golf club, the head is
The vertical center-of-gravity adjustment mechanism or the vertical oblique center-of-gravity adjustment mechanism according to claim 2 or 3, and the front-rear direction gravity center adjustment mechanism or the front-back oblique center-of-gravity adjustment mechanism according to claim 4 or 5, The club for a park golf according to claim 1, wherein   In the club for a club golf, the head of the club has a groove formed in the back surface of the wood base material of the head, one or a plurality of cones that can move back and forth in the groove, and the amount of movement of the cones. And a forward / backward cone fixing means for fixing at the adjustment position, and a slide mechanism for sliding the cone and the forward / backward cone movement / fixing means to the left and right within the groove and fixing at the sliding position. The club for park golf characterized by comprising the front-rear and left-right center-of-gravity adjustment mechanism. In the park golf club, the head is
A park golf characterized by comprising either the vertical center-of-gravity adjustment mechanism or the vertical oblique center-of-gravity adjustment mechanism according to claim 2 or 3, and the front-rear and left-right center-of-gravity adjustment mechanisms according to claim 7. club.   The park golf according to any one of claims 1 to 8, wherein the weight is fixed by a synthetic resin material or an adhesive after the movement amount is adjusted by a movement adjustment / fixing means. For clubs. The park golf club according to claim 9, wherein the synthetic resin material or adhesive is a thermoplastic synthetic resin material or adhesive.