JPH1170194A - Weight body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an iron club head of an optimum weight and weight balance. SOLUTION: The weight body 2 to be installed to the rear surface of the iron club head 1 consists of a structure which is formed to a planar shape, is provided with an upper am part 2b on the upper side of a base part 2a and is formed with a front arm part 2c and rear arm part 2d respectively extended with their ends to a diagonal front side and diagonal rear side on the lower side of the base plate 2a. The weight body 2 is so constituted that the base part 2a exists near the rear extension line of the sweet spot of the iron club head 1, the upper arm part 2b exists on the upper side of the rear surface of the iron club head 1 and the front arm part 2c and rear arm part 2d exist on the lower side of the rear surface of the iron club head 1 when the weight body is installed to the rear surface of the iron club head 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an iron club head.

[0002]

2. Description of the Related Art A golf club has a weight (total weight) and a weight balance (for example, a slightly heavier tip end or a lighter tip end) suitable for a user. Needless to say, the item (1) is optimal.

Accordingly, a golf club maker manufactures a large number of head bodies in increments of 10 g, for example, so that a user can select the most suitable head (club) from among a large number of heads (clubs) having different weights. ing.

[0004] However, since this manufacturing system produces a lot of heads having slightly different weights, the problem of unsold is inevitable, and as a result, the cost cannot be denied as a whole.

[0005] Providing a club having a weight suitable for the user cannot be solved by preparing a large number of heads as described above. However, in consideration of weight balance, more heads are prepared. Therefore, as a practical matter, it is impossible.Therefore, a user who has obtained an optimum club in terms of weight should apply lead or the like to a predetermined position of the head in order to optimize the club in terms of weight balance. The fact is attached.

Therefore, there is a method of making heads one by one as another manufacturing system. However, this method is a method of manufacturing a head in which the weight and the weight balance are set to a predetermined value upon receiving an order one by one, so that the cost naturally increases.

The present invention has solved such a problem, and can provide an optimal head for a user at low cost.

[0008]

The gist of the present invention will be described with reference to the accompanying drawings.

A weight 2 attached to the back surface of the iron club head 1 is provided in the form of a plate, and an upper arm 2b is provided above a base 2a. The iron club head 1 has a structure in which a forearm portion 2c and a rear arm portion 2d respectively extending to the oblique rear side are formed.
When attached to the back of the iron club head 1, the base 2a is located near the rear extension of the sweet spot of the iron club head 1, the upper arm 2b is located on the upper side of the back of the iron club head 1, the forearm 2c and the rear arm Reference numeral 2d relates to a weight that is configured to be located on the lower side of the back surface of the iron club head 1.

In the weight body according to the first aspect, the degree of forward projection of the forearm 2c obliquely forward from the base 2a and the degree of rearward projection of the rear arm 2d obliquely rearward from the base 2a are different. And a weight body characterized in that

Further, in the weight body according to any one of claims 1 and 2, the thickness of an arbitrary portion of the weight body 2 is set to an arbitrary thickness. is there.

In the weight body according to any one of claims 1, 2, and 3, an arm portion of the weight body 2 is provided above the thick peripheral edge of the recess 3 of the iron club head 1 having the recess 3 formed on the back surface. 2b is a weight body characterized in that the forearm part 2c and the rear arm part 2d of the weight body 2 are fixed to the lower side of the thick peripheral edge and the weight body 2 is provided in a state of being bridged in the concave part 3. is there.

A weight body 2 attached to the back surface of the iron club head 1 having a recess 3 formed on the back surface,
The legs 2 b, 2 c, 2 are formed in a plate shape and opposed to the weight 2.
d, and each of the legs 2b, 2c, 2
The weight d is attached to the thick peripheral edge of the concave portion 3 on the back surface of the iron club head 1, and the weight 2 is provided between the concaves 3 in a state of being bridged.

[0014]

The weight and weight balance of the club are optimized by providing the weight 2 according to the present invention on the back surface of the iron club head 1. For example, there is a means for adjusting the weight of the club by filling the neck with lead or the like.However, if the neck or the like is filled with lead or the like, the neck side, that is, the base side becomes heavier, and the club with poor weight balance may be formed. However, according to the present invention, such a problem does not occur.

Since the weight body 2 is attached to the back surface of the iron club head 1, the center of gravity of the head is located on the back surface side of the head and the depth of the center of gravity is deep, so that it becomes a so-called flying iron.

Further, since the weight body 2 has the forearm portion 2c and the rear arm portion 2d, the weight distribution between the tip side and the base side of the head, that is, the front-back balance can be easily obtained.

The front-rear balance can be optimized by differentiating the forward projection of the forearm 2c and the rear projection of the rear arm 2d.

Further, by setting the thickness of an arbitrary portion of the weight body 2 to an arbitrary thickness, a front-rear balance and an up-down balance (for example, creation of an iron having a low center of gravity) can be easily obtained.

The weight body 2 is divided into an upper arm 2b and a forearm 2c.
And by attaching the rear arm 2d to the three points, the attachment of the weight body 2 to the iron club head 1 is reliably and firmly performed.
The upper arm portion 2b, the forearm portion 2c, and the rear arm portion 2d are fixed to the thick peripheral edge of the concave portion 3 of the iron club head 1 having the concave portion 3 formed on the back surface. Can be easily performed, and the weight 2 is in a state of closing the recess 3, so that the club has a very good appearance.

Recently, in order to reduce the weight and enlarge the sweet spot to make it easier to hit a ball, a means of making the head hollow and making the head thinner is adopted. When this means is adopted for a so-called cavity iron (an iron having a structure in which a concave portion is formed on the back surface of the head and the peripheral edge of the concave portion is formed thick), the thick peripheral edge is deformed at the time of impact, so that It was confirmed that vibration occurred. This vibration is remarkable especially in the case of the impact in which the sweet spot is removed.

In the present invention, since the weight 2 is provided between the thick peripheral edges of the back surface of the iron club head 1 in a state of being erected, the head is connected by the weight 2 on the back surface (the front surface is a face). The thick peripheral edges are connected due to the presence of.), So that the vibration of the head at the time of impact is suppressed as much as possible. This can be clearly understood from the fact that the ring body is connected with the bridge body on both the front and back sides more effectively than the ring body connected with the bridge body only on the front side. Equivalent to thick periphery.).

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment of the present invention and will be described below.

The drawing shows a recess 3 of a so-called cavity iron in which a recess 3 is formed on the back surface of the iron club head 1.
This is a case where the weight body 2 is fastened between the upper part of the thick peripheral edge and the lower part of the thick peripheral part.

The weight body 2 has a shape of Mt. Fuji formed of a material having a high specific gravity such as lead, copper, and alloys thereof.

The weight 2 in the drawing is, as shown in FIG.
In FIG. 1, the upper edge is a left-down sloped edge, the left and right side edges are curved edges, and the lower edge is a horizontal edge, which is divided into left and right sides from a central curved edge. The thick portion is configured to be located behind the sweet spot position of the iron club head 1.

Two holes are formed in the upper, lower right and lower left portions of the weight body 2, respectively, while the inner side of the iron club head 1 on the upper and lower sides of the thick peripheral edge is formed. A hole 1a corresponding to the hole of the weight body 2 is formed in the protruding portion 5 so that the hole of the weight body 2 and the hole 1a are aligned with each other.
Is brought into contact with the iron club head 1, and the weight body 2 is fixed to the iron club head 1 by, for example, a screw 4.

Since the present embodiment is constructed as described above, a club having an arbitrary weight can be obtained by, for example, setting the material used for the weight 2 to an appropriate material or setting the total weight of the weight 2 appropriately. Also, by appropriately setting the shape of the weight body 2, that is, the degree of forward protrusion of the forearm 2 c and the degree of protrusion of the rear of the rear arm 2 d, and the thickness of an arbitrary place, an arbitrary value such as an iron having a low center of gravity or the like A club with a weight balance can be obtained. And, in this embodiment, since lead and the like are not packed in the neck,
Optimum weight and weight balance can be achieved.

Further, since the weight body 2 of the present embodiment is attached to the back surface of the iron club head 1, the center of gravity of the club becomes deeper (located on the rear side), and an iron club that flies accordingly.

Further, since the weight body 2 of the present embodiment is disposed in a state of being bridged between the thick peripheral edges of the concave portion 3, the head is also connected from the back surface by the weight body 2, so that at the time of impact, Deformation of the thick peripheral edge is prevented, so that even if the sweet spot is slightly removed, the vibration of the face is suppressed, and the ball can be more accurately hit.

The weight member 2 is fastened to the iron club head 1 at three places by using the thick peripheral edge of the concave portion 3, and in the embodiment, with six screws 4. Since the screw 4 is attached to the thick peripheral edge, screw holes can be easily and reliably formed. Further, since the weight 2 is attached to the recess 3 in a state of being bridged, the weight 3 is attached. Is closed and becomes a very nice club.

In this embodiment, the weight and the weight balance can be finely adjusted depending on the material of the screw 4 and the number of screws 4.

[Brief description of the drawings]

FIG. 1 is a rear view of a head provided with a weight according to the present embodiment.

FIG. 2 is a rear view of the head before attaching a weight according to the embodiment.

FIG. 3 is a sectional view of a head provided with a weight according to the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Iron club head 2 Weight 2a Base 2b Upper arm 2c Forearm 2d Rear arm 3 Depression

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[Procedure amendment]

[Submission date] February 13, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction Details] A weight member attached to the back surface of an iron club head having a concave portion formed on the back surface. The weight member has a plate shape, and the upper arm portion, the forearm portion, and the rear arm portion are provided in opposition to the weight member. Weight, wherein the upper arm, the forearm, and the rear arm are attached to the thick peripheral edge of the recess on the back surface of the iron club head, and the weight is provided between the recesses. body.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction Details] Also, an iron club head 1 having a recess 3 formed on the back surface
A weight 2 attached to the back surface of the upper arm 2b, the forearm 2c, and the rear arm in a plate shape and facing the weight 2
Part 2d is provided, and the upper arm part 2b and
The forearm portion 2c and the rear arm portion 2d are attached to the thick peripheral edge of the recess 3 on the back surface of the iron club head 1, and the weight 2 is provided between the recesses 3 in a suspended state. Things.

Claims (5)

[Claims] 1. A weight member attached to the back surface of an iron club head, wherein the weight member is formed in a plate shape, an upper arm is provided above a base, and an end is formed obliquely frontward and obliquely rearward below the base. The forearm portion and the rear arm portion respectively extended to are formed, when attached to the back of the iron club head, the base is located near the rear extension line of the sweet spot of the iron club head, the upper arm portion A weight body located on the upper side of the back surface of the iron club head, wherein the forearm portion and the rear arm portion are located on the lower side of the back surface of the iron club head. 2. The weight body according to claim 1, wherein the degree of forward projection of the forearm from the base to the oblique front side is different from the degree of rearward projection of the rear arm from the base to the oblique rear side. Characteristic weight body. 3. The weight body according to claim 1, wherein a thickness of an arbitrary portion of the weight body is set to an arbitrary thickness. 4. The weight body according to claim 1, wherein an arm portion of the weight body is provided above the thick peripheral edge of the concave portion of the concave portion of the iron club head having the concave portion formed on the back surface. A weight body comprising: a forearm portion and a rear arm portion of a weight body fixed to a lower side of a peripheral edge, and the weight body is provided in a recessed state. 5. A weight member attached to the back surface of an iron club head having a concave portion formed on the back surface, wherein the weight member has a plate-like structure and legs are provided in opposition to the weight member. A weight body, wherein the leg portion is attached to a thick peripheral edge of a concave portion on the back surface of the iron club head, and the weight body is provided in a state of being bridged between the concave portions.