JPH048921Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a golf club.

As we all know, golf requires large tracts of land, instruction by coaches, and the purchase of equipment, including especially a large number of different clubs (regularly 14 in competitions), all of which add to the fun of golf. Although it is becoming increasingly known, it has become a factor limiting its development.

A golf club is already known from US Pat. No. 3,416,798, in which the ball-striking head is provided with two ball-striking surfaces that can be used alternately and selectively by simply rotating the shaft. The head has a generally cylindrical shape, and the two ball hitting surfaces have different angles of inclination. These ball hitting surfaces are created by cutting the cylinder by two planes that are at different angles to the generatrix of the cylinder. These ball hitting surfaces do not intersect on the ball hitting head, so when the head is viewed from above, it has an overall cylindrical shape as described above.

Such an embodiment is similar to the construction already used in cylindrical mallets, flat on one side and curved on the other, as described, for example, in FR 836,949.

Such a structure, however, has the disadvantage that it cannot be used alone for golf or similar outdoor games. A game like golf requires at least three clubs, each with different characteristics. The first club is used to hit the ball long distances by applying most of its kinetic energy in a substantially horizontal direction, without elevating the ball very high, even though it has a low slope. The second club has a highly sloped surface that raises the ball high, and must distribute kinetic energy vertically and horizontally. In addition, a third club is needed that can only roll the ball without making it fly.

For this reason, the club described in the above-mentioned U.S. Pat. It's not a thing.

The object of the present invention is to provide a club for use in golf or similar sports that eliminates such drawbacks,
A single ball-striking head attached to the shaft has three ball-striking surfaces that can roll the ball short distances on the angular surfaces, long distances with a low trajectory, and medium distances with a high trajectory, and can be used for any of the following. The choice to use a surface is to provide a club constructed such that this can be accomplished simply by rotating the shaft.

The object of the invention is also to provide a club for use in golf or similar sports, which by itself can perform the primary striking of the usual series of golf clubs, and which does not require specially prepared land. figure,
A type of golf can be played using a ball that is easily found in an ordinary field or on relatively abandoned land, with shorter distances than regular golf, and is therefore significantly cheaper and more accessible to anyone. It is an object of the present invention to provide a club for use in a curricular or hobby competition, which can be called grass golf.

The golf club according to the invention includes a shaft and a ball-striking head that extends from the shaft in a generally polyhedral shape, and each of the heads has a different angle of inclination and can be selected by simply rotating the shaft. Equipped with multiple ball hitting surfaces. According to the invention, the ball-striking head has three ball-striking surfaces extending in the shape of a trihedron from one apex where the shaft is attached, and these three surfaces are:
It is divided by three intersecting edges at the end of the shaft to which the ball striking head is fixed.

The ball striking head further includes at least two ground planes separated by at least one edge and extending beyond the ball striking surface. When these contact surfaces touch the ground, the shaft will move from 60° to the horizontal plane.
form an angle of 75°.

The first ball striking surface is substantially vertical when its associated ground contact surface contacts the ground. Therefore, this first ball hitting surface corresponds to what is called a "putter" in a golf club, and is used to roll the ball a short distance.

This substantially vertical ball striking surface can also be used to propel the ball over long trajectories over long distances by placing the ball on a well-known support or tee that is placed approximately 3 cm off the ground before being struck. can. In this case, it is not necessary to touch the contact surface of the ball head to the ground. In this method of use, the club of the present invention is used as a golf club called a "driver."

As is well known, golf clubs are particularly characterized by two angles that determine the inclination of the shaft and the opening of the ball-striking face. That is, the angle of the shaft with respect to the horizontal, called the "lie," and the opening angle of the ball hitting surface with respect to the vertical of the shaft, called the "loft."

When the first ball hitting surface of the club of the present invention is used as a driver as described above, the lie is preferably
50° to 60°, and the loft is preferably 8° to 12°
It is said that

The second ball striking surface preferably has an opening angle or loft of between 25° and 35° when its associated ground contact surface contacts the ground. In this case, the inclination or lie of the shaft is between 60° and 75°. Therefore, by using this second ball hitting surface, it is possible to hit the ball over a relatively long distance with a low trajectory. Use of this second ball-striking surface would be equivalent to using a golf club called, for example, a "3-wood" or "intermediate iron."

The second ball striking surface creates an opening angle or loft of 40° to 45° when its associated contact surface contacts the ground. The shaft slope or lie is the same as before, 60° to 75°.

It will be appreciated that when the second and third ball striking surfaces of the club of the present invention are used, the shaft inclinations are preferably substantially equal.

The third ball hitting surface is used to hit the ball over a short distance with a high trajectory. This use corresponds to that of a "9 iron" golf club.

In the first embodiment of the invention, the ball hitting head is
It includes three ground planes that substantially form a trihedron that is flatter than the trihedron formed by the three ball-hitting surfaces.

In another embodiment, the ball striking head has only two contact surfaces, one of which is substantially triangular and the other of which is substantially rectangular.

In this latter embodiment, whatever ball-striking surface is used, the edge between the ball-striking surface and the grounded surface is substantially parallel to the shaft's ground trace. The ground contact surface and second and third ball hitting surfaces are set.

When one ground contact surface makes contact with the ground, the first ball hitting surface forms an angle of 5° to 20° with the vertical plane, and the edge between the first ball hitting surface and the ground contact surface is the ground of the shaft in use. The ground plane is set substantially perpendicular to the trace.

The one ground contact surface is in contact with the ground when using the third ball hitting surface with the greatest degree of inclination, and when using the substantially vertical first ball hitting surface after rotating the shaft normally. In this embodiment, the single ground plane is therefore used in conjunction with the two ball striking surfaces.

The invention will be better understood from the detailed description of two non-limiting embodiments shown in the accompanying drawings, in which: FIG.

As shown in FIG. 1, the head of the club, designated by the number 1, has a generally trihedral polyhedral profile extending from the apex, at the apex of which a hole 2 is provided, into which the shaft 3 of the club is inserted. Installed.

F1, F2, F3 indicate the three faces of the trihedron,
These surfaces constitute three selectable ball hitting surfaces for hitting the ball, each with a different angle of inclination. Selection of the ball hitting surface is accomplished simply by rotating the shaft about its axis. The head 1 further has a flatter overall trihedral shape on the other side of the ball hitting surface, and the three faces F4, F5, F6 of this trihedron are the respective ball hitting surfaces F1,
F2 and F3 are adjusted to suit a player of average height and serve as a contact surface that supports the head on the ground. The club head 1 is preferably made of metal, such as cast light metal, and is of hollow construction to give it a weight similar to that of a conventional golf club, but this construction can be ballasted to suit the user's preference. It can be changed by The shaft can be selected to be substantially the same length as, for example, a golf intermediate iron.

The hollow metal structure as described above is preferably provided with openings 4 at the ball-striking areas of each ball-striking surface F1, F2, F3, and these openings are preferably made of elastomer material, which constitute the ball-striking parts. It is closed by a lid 5. These lids can be made into relatively resilient ball-hitting parts by fitting them into stepped counterbore holes so that they are flush with the respective ball-hitting surfaces of the club head, and by simply gluing their peripheries. can. The lids 5 may also be painted in different colors to allow beginners to easily identify the respective use surfaces of the club.

We will now discuss four basic uses of such clubs, shown in FIGS. 3 through 8.

- Figure 3 shows the case when used as a "driver" (starting long distance shot), where the almost vertical surface F1 is directed towards the ball and the lower surface F4 is brought approximately in contact with the ground. Ru.

- FIG. 4 corresponds to the use as a "putter" (a shot into the hole), in which the same plane F1 is used with the shaft 3 substantially vertical or tilted slightly forward towards the ball.

- Figure 5 corresponds to use as an "intermediate iron" or "No. 3 iron" by turning the shaft of the club approximately one-third clockwise from the position shown in Figure 3, and adjusting the angle of inclination from plane F1. The larger surface F2 is directed toward the ball, and the surface F5 is applied to the ground in front of the ball.

- Figure 6 corresponds to use as a "small iron", and when the shaft of the club is rotated approximately one-third clockwise from the position shown in Figure 5, the surface F3, which has a greater slope than surface F2, is aligned with the ball. and face F6 is placed on the ground in front of the ball.

- Figure 7 shows the ball hitting surface F1 as in the case of Figure 3.
Another possible use of the club is to use it to hit the ball long distances. In this case, the ground plane F
4 is not used and the ball is placed on a support at a height of approximately 3 cm from the ground.

- FIG. 8 shows yet another possible use of the club, as in FIG. 4, again using the ball-striking surface F1 to roll the ball like a "putter." In this case, however, the ground plane F6 is on the ground, and the club must therefore be used with the shaft tilted slightly in the direction of ball rolling with respect to the vertical. Handling a club like a ``putter'' is not a different way of using a club, and is something that some golfers normally do. In this case, the ball hitting surface F1 becomes substantially vertical.

9 and 10 show a second embodiment of the club of the present invention. Like elements in the drawings are designated with the same reference numerals.

Figure 9 also shows three ball hitting surfaces F1, F2, F3.
It shows. FIG. 9 also shows the intersecting edges between these planes. These edges are the letter A
are displayed with two numbers corresponding to the two adjacent faces. FIG. 9 thus shows three edges A12, A13, A23 which all intersect together at the end of the shaft 3 of the club.

FIG. 10 shows two ground planes F5 and F6. In this embodiment surface F4 is eliminated. The two ground planes F5 and F6 intersect along edge A56. As seen in the figure, surface F6 is generally rectangular, and surface F5 is triangular.

Furthermore, FIGS. 9 and 10 show the various vertices of the polyhedral ball hitting head, which vertices are designated by the letter S.
is displayed with three numbers corresponding to the vertex and the three adjacent faces.

Therefore, in FIGS. 9 and 10, the vertices S136,
S126, S256, S235, and S356 are shown.

FIG. 9 further shows traces of the shaft 3 in various positions of use. When face F2 is used, the trace of the shaft is a half-line M2 extending from the vertices of the polyhedron. In this case, the line of intersection between the ball hitting surface F2 and the ground, that is, the line of intersection between the surface F2 and the surface F5 is the trace T25. In normal use, the trace T25 should be parallel to the shaft trace M2.

Similarly, when surface F3 is used, the trace of shaft 3 is a half-line M3 extending from the vertex of the polyhedron, which is parallel to trace T36, which is the line of intersection between ball-striking surface F3 and ground plane F6.

Traces M2 and M3 of shaft 3 are also the 10th
Also in the figure, it is shown as extending from the virtual intersection of the shaft 3 and the plane F6.

When plane F1 is used as a "putter", shaft 3 is substantially vertical and planes F1 and F6
The line of intersection with T1 is perpendicular to the trajectory of the ball.
It is 6.

Although the geometrical examination of the problem presented here is of great complexity and difficulty, it is possible to effectively determine the required three ball-striking surfaces, for example in Figures 9 and 1.
This must be overcome in order to obtain the special shape of the ball hitting head as shown in FIG.

Therefore, various geometrical limiting conditions such as those described below must be satisfied at the same time.

Determine the three ball hitting surfaces F1, F2, and F3.

Two ground planes F5, F6 are defined and the two traces M2 and M3 of the shaft relative to the ground are respectively parallel to the two edges T25 and T36 in the respective use of planes F2 and F3.

The three edges A12, A13, A23 must intersect at one real point that overlaps the end of the shaft.

The angles between the shaft and the two contact surfaces F5 and F6 are substantially equal and are taken between 60° and 75°, which determines the lie angle in use of surfaces F2 and F3.

The angle between the ground plane F5 and the ball striking surface F2 should be between about 65° and 55° so that the loft angle of the ball striking surface F2 is between about 25° and 35°.

The angle between the ground contact surface F6 and the ball hitting surface F3 must be between approximately 50° and 45° so that the loft angle of the ball hitting surface F3 is between 40° and 45°.

It will be understood from the above that a certain fixed polyhedron is formed as an effect of various mathematical limiting conditions. Furthermore, it will be understood that the minimum function is derived so as to make the difference between the lengths of the respective edges determined as described above mutually as small as possible.

This invention provides the results of the above-mentioned examinations, and thereby, as already stated,
This makes it possible to determine three ball hitting surfaces with varying degrees of inclination and the appropriate orientation of the edges of the ball hitting surface and the ground contact surface.

Figures 11a and 11b illustrate an example of the use of the club to drive the ball long distances in a "driver" manner. In this case, the ball 6 is placed approximately 3 cm above the ground on a support or "tee" 7 inserted into the ground. In this usage, a substantially vertical ball hitting surface F1 is applied to the ball 6. Chapter 11a
As shown in Figure and Figure 11b, the "lie" is approximately
55°, and the "loft" is about 10°.

It will be seen in Figures 11a to 14b that the end of the shaft 3 is fitted into a shank 3a connecting each ball striking surface F1, F2, F3. Edges A12, A13, and A23 are grouped into the shank by a curve. Such an embodiment facilitates fixed attachment of the shaft without changing the structure of the head and also improves the appearance of the club. Especially Edge A12, A13, A23
The extension lines intersect each other at the end of each of the shank 3a and the inner shaft 3.

Figures 12a and 12b show how the ball 6 is rolled like a putter using the same ball hitting surface F1.
In this case, surface F6 is applied to the ground. 12b
As can be seen in the figure, the shaft 3 is tilted slightly in the direction of the trajectory of the ball with respect to the vertical. Surface F is substantially vertical. Trace T16 is perpendicular to the ball's trajectory.

Figures 13a and 13b show the surface F as the ball hitting surface.
Here is an example of how to use a club when using 2 like a ``3 wood'' or ``intermediate iron'' to hit the ball over a medium distance with a low trajectory. Surface F5 is in contact with the ground. The trace T25 seen in FIGS. 9 and 10 is parallel to the projection of the shaft onto the ground (trace M2), ie at right angles to the trajectory of the ball 6. In this illustrated usage, "lie" is approximately 65 degrees and "loft" is approximately 31 degrees.

In Figures 14a and 14b, the club is
Hit the ball a short distance with a high trajectory, like when using a ``9 iron.'' Surface F is the ball hitting surface.
3 is used. The trace T36 is parallel to the projection of the shaft 3 onto the ground, ie at right angles to the trajectory of the ball. As in the usage of FIGS. 12a and 12b, surface F6 is applied to the ground. However, in this case, the edge for hitting the ball is edge T36, not edge T16.

As seen in the drawings, the lie is approximately 70° and the loft is approximately 45° in the illustrated embodiment.

[Brief explanation of drawings]

FIG. 1 is a top view of the ball-striking head of a first embodiment of the club according to the invention, showing the three ball-striking surfaces forming a substantially trihedral shape, and FIG. 2 is a bottom view of the same ball-striking head, showing a flatter surface. Three ground planes forming a trihedron are shown, and FIG. 3 shows the case where one of the ground planes of the club in the above drawing is in contact with the ground and the club is used as a "driver". This drawing shows that the trajectory of the ball is Figure 4 is also a front view from the direction of the ball being hit, showing the use of rolling the ball like a "putter" on the same striking surface, and Figure 5 is shown perpendicular to the plane of the drawing; 6 is a front view from the side of the ball that is also being hit, and shows the case where another contact surface is in contact with the ground and the second ball hitting surface is used to fly the ball relatively far in a low trajectory. Figure 7 is a front view from the side of the ball being hit, showing the use of a different contact surface and a different hitting surface to hit the ball over a short distance with a high trajectory; A drawing similar to Figure 3, "Driver"
Figure 8 is a drawing similar to Figure 4, also viewed from the side of the ball being hit, showing another use of the same club for hitting the ball over long distances, as a "putter" for rolling the ball. 9 is a top view similar to FIG. 1 of another embodiment of the club according to the invention, showing another use of the same ball-striking surface;
Figure 0 is a bottom view of the club in Figure 9 showing the two contact surfaces, Figures 11a and 11b are the bottom views of the club in Figures 9 and 10.
The club shown in the figure shows how to use the ball on a support to hit it long distances as a "driver".
where Figure 11a shows the ball trajectory perpendicular to the plane of the drawing, Figure 11b shows the same trajectory in the plane of the drawing, and Figures 12a and 12b show the club rolling the ball. This is a similar drawing to FIGS. 11a and 11b when the club is used as a "putter", and FIGS. 13a and 13b are similar to the above drawings, but the club is "3rd up".
or when used to hit the ball in a low trajectory like an "intermediate iron", and the 14th
Figures a and 14b are similar to the above figures, but show the case where the club hits the ball in a high trajectory like a "9 iron". 1... Club head, 2... Shaft mounting hole, 3... Shaft, 4... Opening, 5... Lid, 6
...Ball, 7...Tee, F1, F2, F3...
...Ball hitting surface, F4, F5, F6... Ground contact surface, A...
Edge, M...Shaft trace, S...Vertex,
T...Trace.

Claims (1)

[Scope of claims for utility model registration] (1) A club for golf practice or similar games, with a head for hitting a ball 1
and a shaft 3 fixed to the ball hitting head so as not to rotate relative to each other, the ball hitting head 1 extending in the form of a triangular shape from the apex of the club to which the shaft 3 is fixed; Shaft 3
three hitting surfaces F1, F2, and F3 that can be selected by simply rotating; b at least two surfaces F that are placed on the ground;
5, F6, three edges A13, A23, A1 where the three ball hitting surfaces intersect at the actual point of the end of the shaft integral with the ball hitting head 1;
The two surfaces F5 and F6 are separated by 2 and placed on the ground.
The angles formed with the shaft 3 are substantially equal, and the edges T25 and T36 between the ball hitting surfaces F2 and F3 used and the ground contact surfaces F5 and F6 that contact the ground are , the line M of the shaft on the ground
2. Grounding surfaces F5, F6 resting on the ground so as to be substantially parallel to M3.
and second and third ball-hitting surfaces F2 and F3 are arranged, and when one of the grounding surfaces F6 comes into contact with the ground, the first ball-hitting surface F1 is substantially vertical. , such that an edge T16 between the one of the grounding surfaces F6 and the first ball striking surface F1 is substantially perpendicular to the trajectory of the golf ball. A club characterized by having F6 installed. (2) The ground contact surfaces F5 and F6 are such that when the shaft 3 contacts the ground, the shaft 3 is in a horizontal plane.
Utility model registration claim 1 characterized by forming an angle between 60° and 70°
Clubs listed in section. (3) The club according to claim 2, wherein one of the grounding surfaces F5 is triangular and the other F6 is substantially rectangular. (4) The head for hitting the ball has three nearly flat trihedral faces F4, F5, and F6 that are placed on the ground;
These surfaces are formed into the above-mentioned hitting surface F by the edge.
The club according to claim 1 of the utility model registration claim, characterized in that the club is divided into 1, F2, and F3. (5) When the respective associated ground contact surfaces contact the ground, the first ball hitting surface F1 touches the shaft 3.
, the second face F2 has an opening angle between 25° and 35°, and the third face F3 has an opening angle of 40° and The club according to any one of claims 1 to 4, characterized in that it has an opening angle of between 45°. (6) Request for registration of a utility model characterized in that when the third ball hitting surface F3 is used and when the first ball hitting surface F1 is used, one of the grounding surfaces F6 is in contact with the ground at the same time. Clubs listed in Clause 1 or 2 of the Scope.