CN113262446A

CN113262446A - Golf club head

Info

Publication number: CN113262446A
Application number: CN202110053241.2A
Authority: CN
Inventors: 平井究
Original assignee: Yamaha Corp
Current assignee: Yamaha Corp
Priority date: 2020-02-17
Filing date: 2021-01-15
Publication date: 2021-08-17
Also published as: CN215841486U; JP2021126469A; KR102520322B1; KR20210104545A

Abstract

The invention aims to provide a golf club head which can properly restrain the deformation near the face part of a crown part and can make the face part fully flex. A golf club head (1) according to one aspect of the present invention is provided with a hollow head main body (10), wherein the hollow head main body (10) has a face portion (2) and a crown portion (3) extending rearward from an upper edge (2a) of the face portion (2), the crown portion (3) has a band-shaped first high-rigidity portion (8) along the upper edge (2a) of the face portion (2), the first high-rigidity portion (8) has a plurality of first unit structures (11) aligned along the upper edge (2a) of the face portion (2), the first unit structures (11) are recesses or protrusions, and the first high-rigidity portion (8) is provided in a region of the crown portion (3) within a range of 1/5 from a front end with respect to a front-rear direction length.

Description

Golf club head

Technical Field

The present invention relates to golf club heads.

Background

For a wood type golf club head having a hollow head body, it is desirable to be able to increase the flight distance of a shot. In order to increase the flight distance of the shot, it is considered effective to increase the initial velocity of the shot.

From this viewpoint, it has been proposed to provide a plate-shaped reinforcing rib along the toe-heel direction behind the shaft connecting portion on the head inner surface (see japanese patent application laid-open No. 2000-176056).

Patent document 1 Japanese laid-open patent publication No. 2000-176056

Disclosure of Invention

Technical problem to be solved by the invention

In the wood club described in patent document 1, since the reinforcing rib is provided, deformation of a portion located rearward of the reinforcing rib of the head can be suppressed at the time of hitting a ball, and energy of the impact can be consumed for deformation of the face portion. This allows the face portion of the wood club to effectively flex, and the deformation of the face portion increases the initial speed of a shot, thereby increasing the flight distance of the shot.

However, the reinforcing rib described in patent document 1 needs to be provided at a position apart from the shaft connecting portion of the head inner surface. Therefore, the reinforcing rib is difficult to be arranged near the face portion of the head. As a result, it is difficult to sufficiently suppress deformation near the face portion of the head by the reinforcing rib. The wood club described in patent document 1 is formed by welding a plurality of members constituting the shell portion of the head to the reinforcing rib. Therefore, the manufacturing process of the wood pole becomes complicated.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a golf club head that can appropriately suppress deformation near a face portion of a crown portion and can sufficiently flex the face portion.

Technical solution for solving technical problem

A golf club head according to an aspect of the present invention, which has been made to solve the above-described problems, includes a hollow head body having a face portion and a crown portion extending rearward from an upper edge of the face portion, the crown portion having a band-shaped first high-rigidity portion along the upper edge of the face portion, the first high-rigidity portion having a plurality of first unit structures aligned along the upper edge, the first unit structures being recesses or protrusions, and the first high-rigidity portion being provided in a region of the crown portion within a range of 1/5 from a front end with respect to a longitudinal length.

The first unit configuration may have a pair of side surfaces extending in the front-rear direction and opposed to each other.

The length of the first unit structure in the front-rear direction is preferably 15mm or less.

Preferably, all of the first units are configured as recesses.

Preferably, a ratio of a length of the first high rigidity portion to a length of the head body in a toe-heel direction is 0.40 or more.

Preferably, the head main body has a sole portion extending rearward from a lower edge of the face portion, the sole portion has a second high-rigidity portion in a band shape along the lower edge of the face portion, and the second high-rigidity portion has a plurality of second unit structures aligned along the lower edge.

The golf club head may have a rib portion extending in a direction along an upper edge of the face portion on an inner face of the crown portion.

In the present invention, "front" in the head main body means the striking side, and "rear" means the opposite side. The "face portion" refers to a portion having a striking face at the front. The "front-rear direction" refers to a direction perpendicular to a vertical plane including a center axis of the shaft in a state where the head main body is set on a horizontal plane at a predetermined lie angle. The "toe-heel direction" means a horizontal direction parallel to a vertical plane including the central axis of the shaft in the above state.

ADVANTAGEOUS EFFECTS OF INVENTION

The golf club head according to an embodiment of the present invention can appropriately suppress deformation near the face portion of the crown portion and can sufficiently flex the face portion. Thus, the golf club head can increase the initial speed of a shot and increase the flight distance of the shot.

Drawings

Fig. 1 is a schematic front view showing a golf club having a golf club head according to an embodiment of the present invention.

Fig. 2 is a schematic top view (top view) of the golf club head of fig. 1.

Fig. 3 is a schematic bottom view (bottom view) of the golf club head of fig. 1.

Fig. 4 is a cross-sectional view of the golf club head of fig. 2 taken along line IV-IV.

Fig. 5 is a cross-sectional view taken along line V-V in the vicinity of the front end of the crown portion of the golf club head of fig. 2.

Fig. 6 is a schematic plan view showing a first unit structure of the golf club head of fig. 2.

FIG. 7 is a sectional view taken along line VII-VII of the first unit construction of FIG. 6.

Fig. 8 is a cross-sectional view, corresponding to fig. 4, of a golf club head of an embodiment that differs from the golf club head of fig. 1.

Fig. 9 is a cross-sectional view of the golf club head of fig. 8 corresponding with fig. 5.

Fig. 10 is a schematic cross-sectional view showing a first high rigidity portion of a golf club head according to an embodiment different from the golf club heads of fig. 1 and 8.

Description of the reference numerals

1. 21 … golf club head;

2 … face of the rod;

2a … upper edge;

2b … lower edge;

3 … crown;

4 … at the bottom of the rod;

5 … side surface parts;

6 … shaft mounting portion;

6a … projection;

7 … shaft;

8 … first high rigidity portion;

9 … other unit configurations;

10 … head main body;

11. 31 … first unit configuration;

11a … side;

11b … front;

11c …;

11d … bottom surface;

12 … second high rigidity portion;

13 … second unit configuration;

13a … side;

22 … ribs;

31a … top surface;

x … wood-type golf clubs;

a distance in the front-rear direction between the front end of the crown portion and the rear end of the first high-rigidity portion D1 …;

d2 … average distance between the face portion and the first high rigidity portion in the front-rear direction;

d3 … average depth of the first unit formation;

d4 … distance adjacent first unit structures from each other;

d5 … average distance between rib and face in the front-rear direction;

the length of the crown of L1 … in the fore-aft direction;

the length of the club head body in the toe-heel direction of L2 …;

length of the first high stiffness portion in the toe-heel direction of L3 …;

the longitudinal length of the side face of the L4 … first unit structure;

the toe-to-heel direction lengths of the front and rear faces of the L5 … first unit configuration;

the longitudinal length of the L6 … first unit structure;

the length of the bottom of the L7 … bar in the fore-aft direction;

average thickness of T … first high stiffness portion;

alpha … tilt angle.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[ first embodiment ]

< Golf club head >

As shown in fig. 1, the golf club head 1 includes a hollow head main body 10. As shown in fig. 1 to 3, the head body 10 includes a face portion 2, a crown portion 3 extending rearward from an upper edge 2a of the face portion 2, and a sole portion 4 extending rearward from a lower edge 2b of the face portion 2. The head body 10 includes a side surface portion 5 extending rearward from a pair of left and right side edges of the face portion 2 and disposed between the crown portion 3 and the sole portion 4, and a shaft mounting portion 6. The golf club head 1 is a wood type golf club head. The shaft mounting portion 6 has a cylindrical projection 6 a. As shown in fig. 1, the golf club head 1 is used as a wood type golf club X in a state where a shaft 7 is connected to a shaft mounting portion 6. The head body 10 is, for example, a metal wood head, and contains metal such as titanium as a main component.

(crown part)

As shown in fig. 2, 4, and 5, the crown portion 3 has a band-shaped first high-rigidity portion 8 along the upper edge 2a of the face portion 2. The first high-rigidity portion 8 has a plurality of first unit structures 11 aligned along the upper edge 2a of the face portion 2. In other words, the first high rigidity portion 8 has a plurality of first unit structures 11 aligned in the longitudinal direction thereof. The plurality of first unit configurations 11 are arranged in a row and spaced apart in the toe-heel direction. The first unit structures 11 are recesses or protrusions, and in the present embodiment, the first unit structures 11 are recesses. All of the first unit structures 11 of the golf club head 1 are recesses. By making all the first unit structures 11 constituting the first high rigidity portion 8 concave, deformation of the crown portion 3 can be suppressed easily and uniformly in the toe-heel direction. Further, according to this structure, since the surface of the crown portion 3 can be easily polished, the crown portion 3 can be easily formed into a desired smooth surface or the like. The crown portion 3 may have another unit structure 9 different from the first unit structure 11 on one side or both sides in the longitudinal direction of the first high rigidity portion 8.

[ first high rigidity portion ]

The first high rigidity portion 8 increases the rigidity of the crown portion 3. As shown in fig. 2, the first high rigidity portion 8 is provided in a region 1/5 from the front end of the crown portion 3 (i.e., the boundary line with the face portion 2) with respect to the front-rear direction length L1 of the crown portion 3. In other words, the ratio of the longitudinal distance D1 between the front end of the crown portion 3 and the rear end of the first high rigidity portion 8 to the longitudinal length L1 of the crown portion 3 is 0.2 or less. Further, the upper limit of the ratio is more preferably 0.15. Since the crown portion 3 has the first high rigidity portion 8, deformation of a portion located on the rear side of the first high rigidity portion 8 can be suppressed. Therefore, if the ratio exceeds the upper limit, there is a possibility that it is difficult to appropriately suppress deformation of the face portion 2 side of the crown portion 3. As a result, the energy of the ball impact may be dispersed, and it may be difficult to intensively deflect the face portion 2. The lower limit of the ratio is not particularly limited, but may be, for example, 0.10. If the ratio is lower than the lower limit, it is difficult to sufficiently increase the size of the first high rigidity portion 8, and it is difficult to sufficiently suppress deformation of the crown portion 3 by the first high rigidity portion 8.

The shaft mounting portion 6 may be located on an extension line of the first high rigidity portion 8 in the longitudinal direction. With this configuration, the first high rigidity portion 8 can be easily disposed in the vicinity of the face portion 2, and deformation of the crown portion 3 on the face portion 2 side can be easily suppressed.

The lower limit of the average distance D2 between the face portion 2 and the first high rigidity portion 8 in the front-rear direction is preferably 2mm, and more preferably 3 mm. On the other hand, the upper limit of the average interval D2 is preferably 20mm, and more preferably 15 mm. If the average interval D2 does not satisfy the lower limit, there is a possibility that the deflection of the face portion 2 itself is hindered by the first high rigidity portion 8. In contrast, if the average distance D2 exceeds the upper limit, the energy of the impact of the ball is dispersed, and it is difficult to intensively deflect the face portion 2. The term "average distance between the face portion and the first high rigidity portion in the front-rear direction" means an average value of distances between the face portion and each of the first unit structures constituting the first high rigidity portion in the front-rear direction.

The lower limit of the ratio of the length L3 of the first high rigidity portion 8 to the length L2 of the head main body 10 in the toe-heel direction is preferably 0.40, and more preferably 0.45. If the ratio does not satisfy the lower limit, there is a possibility that it is difficult to sufficiently suppress deformation of the crown portion 3 by the first high rigidity portion 8. On the other hand, the upper limit of the ratio is preferably 0.95, and more preferably 0.90. If the ratio exceeds the upper limit, there is a possibility that the formation of the first high rigidity portion 8 at a position close to the face portion 2 becomes difficult. The first high rigidity portion 8 is preferably provided at least rearward of the center portion of the upper edge 2a of the face portion 2 in the toe-heel direction. The "length of the head body in the toe-heel direction" refers to the length in the toe-heel direction of a projection image obtained by projecting a portion of the head body excluding the projection 6a of the shaft mounting portion 6 in the front-rear direction.

The first high rigidity portion 8 is integrally formed of the same material as the other regions of the crown portion 3. As shown in fig. 4 and 5, the inner surface of the first high rigidity portion 8 in the crown portion 3 protrudes inward in correspondence with the depression of the first unit structure 11. That is, the first high rigidity portion 8 has a shape that partially deflects the crown portion 3. The first high rigidity portion 8 is not a thin portion that makes a part of the crown portion 3 thin. It is preferable that the thickness of the first high rigidity portion 8 coincides with the thickness of the crown portion 3 continuous with the first high rigidity portion 8. The first high rigidity portion 8 is formed, for example, by using a mold having a shape corresponding to the first high rigidity portion 8. More specifically, the first high rigidity portion 8 is formed integrally with the other portion of the crown portion 3 by injecting a forming material of the head body into a mold having a shape corresponding to the first high rigidity portion 8 and solidifying the forming material. According to this method, the thickness of the first high rigidity portion 8 and the thickness of the crown portion 3 continuous with the first high rigidity portion 8 can be easily and uniformly formed. In the golf club head 1, the first high rigidity portion 8 and the crown portion 3 continuous with the first high rigidity portion 8 have a uniform thickness, so that the rigidity of the crown portion 3 can be improved by the first high rigidity portion 8, and the weight increase of the entire crown portion 3 can be suppressed. The term "uniform thickness" means that the thickness ratio is 0.8 or more and 1.2 or less, preferably 0.9 or more and 1.1 or less, and more preferably 0.95 or more and 1.05 or less.

The lower limit of the average thickness T of the first high rigidity portion 8 is preferably 0.2mm, and more preferably 0.4 mm. On the other hand, the upper limit of the average thickness T is preferably 1.2mm, and more preferably 0.9 mm. If the average thickness T does not satisfy the lower limit, there is a possibility that it is difficult to sufficiently suppress deformation of the crown portion 3. In contrast, if the average thickness T exceeds the upper limit, there is a possibility that the weight of the golf club head 1 becomes excessively large. The "average thickness of the first high rigidity portion" means an average value of thicknesses of arbitrary five points of the plurality of first unit structures constituting the first high rigidity portion.

[ first Unit Structure ]

As previously mentioned, the first unit configuration 11 is a recess. As shown in fig. 6, the first unit structure 11 has a pair of side surfaces 11a extending in the front-rear direction and opposing each other. The pair of side surfaces 11a are flat surfaces. In general, since the impact at the time of hitting a golf ball is transmitted rearward from the front end of the crown 3, the crown 3 is easily bent in the forward and rearward direction. In this regard, in this golf club head 1, the first unit structure 11 has a pair of side surfaces 11a, so that the bending in the front-rear direction of the crown portion 3 can be easily suppressed. The side surface extends in the front-rear direction, which means that the side surface is inclined at an angle of 5 ° or less, preferably 3 ° or less, and more preferably 1 ° or less with respect to the front-rear direction.

As shown in fig. 6 and 7, the first unit configuration 11 has a front face 11b connecting front ends (front edges) of a pair of side faces 11a to each other and a rear face 11c connecting rear ends (rear edges) of a pair of side faces 11a to each other. The first unit structure 11 has a bottom surface 11d connecting bottom edges of the front surface 11b, the rear surface 11c, and the pair of side surfaces 11a to each other. The front face 11b, the rear face 11c and the bottom face 11d are all flat. The bottom surface 11d has a substantially rectangular shape, more specifically, a substantially rectangular shape having a longitudinal direction in the front-rear direction and a short-side direction in the toe-heel direction. In this golf club head 1, the first unit structure 11 has the bottom face 11d, so that the deformation in the front-rear direction and the toe-heel direction of the crown portion 3 is easily suppressed together. The term "substantially rectangular shape" includes a shape in which corners of a rectangle are chamfered.

The front-rear direction length L4 of the pair of side faces 11a is equal to or greater than the toe-heel direction length L5 of the front face 11b and the rear face 11 c. According to this structure, the first unit structures 11 can easily suppress the bending of the crown portion 3 in the front-rear direction, and the number of the first unit structures 11 in the first high rigidity portion 8 can be increased. As a result, deformation of the crown portion 3 can be more easily suppressed. The "longitudinal length of the side surface" refers to a length between the front end and the central portion in the depth direction of the rear end of the side surface. Further, the "toe-heel direction length of the front portion" refers to a length between the depth-direction central portions of both side ends of the front portion, and the "toe-heel direction length of the rear portion" refers to a length between the depth-direction central portions of both side ends of the rear portion.

The pair of side surfaces 11a are close to each other in the depth direction. The pair of side surfaces 11a may be inclined in a direction approaching each other in the depth direction, or only one side surface 11a may be inclined in a direction approaching the other side surface 11a in the depth direction. The front surface 11b and the rear surface 11c are close to each other in the depth direction. The front face 11b and the rear face 11c may be inclined in a direction approaching each other in the depth direction, or only one of the front face 11b and the rear face 11c may be inclined in a direction approaching the other of the front face 11b and the rear face 11c in the depth direction. The first unit structure 11 is preferably substantially rectangular frustum-shaped. In this golf club head 1, the pair of side surfaces 11a are close to each other in the depth direction, and the front surface 11b and the rear surface 11c are close to each other in the depth direction, so that the first high rigidity portion 8 can be easily formed using a mold. This can suppress an increase in the thickness of the first high rigidity portion 8, and thus the golf club head 1 can be easily reduced in weight.

In the case where the front surface 11b, the rear surface 11c, and the pair of side surfaces 11a are inclined in the depth direction, the lower limit of the inclination angle α is preferably 30 °, and more preferably 40 °. On the other hand, the upper limit of the inclination angle α is preferably 80 °, and more preferably 60 °. If the inclination angle α does not satisfy the lower limit, there is a possibility that the function of the first unit structure 11 to suppress deformation of the crown portion 3 is insufficient. In contrast, if the inclination angle α exceeds the upper limit, there is a possibility that it is difficult to form the first high rigidity portion 8 using a mold.

The upper limit of the longitudinal length L6 of the first unit structure 11 is preferably 15mm, and more preferably 12 mm. If the front-rear direction length L6 exceeds the upper limit, there is a possibility that the front-rear direction bending suppression function of the crown portion 3 is difficult to improve and the weight of the crown portion 3 becomes large due to the first unit structure 11. On the other hand, the lower limit of the longitudinal length L6 of the first unit structure 11 is preferably 3mm, and more preferably 4 mm. If the front-rear direction length L6 does not satisfy the lower limit, there is a possibility that it is difficult to sufficiently suppress the front-rear direction bending of the crown portion 3. The "longitudinal length of the first unit structure" means a longitudinal distance between the foremost end and the rearmost end of the first unit structure.

The lower limit of the average depth D3 of the first unit structure 11 is preferably 1.0mm, and more preferably 1.5 mm. On the other hand, the upper limit of the average depth D3 is preferably 3.0mm, and more preferably 2.5 mm. If the average depth D3 does not satisfy the lower limit, there is a possibility that it is difficult to sufficiently suppress deformation of the crown 3. In contrast, if the average depth D3 exceeds the upper limit, there is a possibility that the deformation suppressing function of the crown portion 3 is difficult to improve, and that the weight of the crown portion 3 becomes large due to the first unit structure 11. The "average depth of the first unit structure" means an average of the maximum depth and the minimum depth between the bottom and the opening of the first unit structure.

The lower limit of the distance D4 between adjacent first unit structures 11 is preferably 1mm, and more preferably 2 mm. On the other hand, the upper limit of the distance D4 is preferably 5mm, and more preferably 4 mm. If the interval D4 does not satisfy the lower limit, there is a possibility that the first unit configuration 11 of the desired shape is formed. In contrast, if the interval D4 exceeds the upper limit, there is a possibility that it is difficult to arrange the first unit structures 11 at a high density and sufficiently suppress deformation of the crown portion 3.

It is preferable that the plurality of first unit structures 11 constituting the first high rigidity portion 8 have the same shape. It is preferable that the pitches between the adjacent first unit structures 11 are all the same. According to this structure, the formation of the easily deformable region in the crown portion 3 can be suppressed. Thereby, the hitting direction of the shot is easily controlled.

(Pole bottom)

As shown in fig. 3 and 4, the pole bottom portion 4 has a second high rigidity portion 12 in the form of a band along the lower edge 2b of the pole face portion 2. The second high rigidity portion 12 has a plurality of second unit structures 13 aligned along the lower edge 2b of the face portion 2. The second unit configuration 13 is a recess or a protrusion. In this golf club head 1, the sole portion 4 has the second high rigidity portion 12, so that deformation of the sole portion 4 can be suppressed. This allows the face portion 2 to be more intensively deflected.

The second high rigidity portion 12 increases the rigidity of the rod bottom portion 4. As shown in fig. 4, the inner face of the second high rigidity portion 12 in the pole bottom portion 4 protrudes or is recessed in correspondence with the second unit structure 13. The second high rigidity portion 12 is provided near the lower edge 2b of the face portion 2. The second high rigidity portion 12 is preferably provided in a region 1/5 from the front end of the sole portion 4 (i.e., the boundary line with the face portion 2) with respect to the front-rear direction length L7 of the sole portion 4. Further, the second high rigidity portion 12 is preferably provided at a position vertically opposed to the first high rigidity portion 8.

Preferably, the shape of the second unit structure 13 is different from the shape of the first unit structure 11. In the golf club head 1, it is preferable that the degrees of deformation of the crown portion 3 and the sole portion 4 are individually adjusted so that the face portion 2 has desired flexibility. Therefore, it is preferable to design the shape of the second unit structure 13 separately from the first unit structure 11.

The second unit configuration 13 may have a side face 13a extending in a direction inclined with respect to the front-rear direction in bottom view. According to this structure, the one side surface 13a can be easily provided with a function of suppressing bending in both the front-rear direction and the toe-heel direction, and deformation of the sole portion 4 in the case where a ball or the like is not hit can be easily suppressed.

< advantage >

In the golf club head 1, since the first high rigidity portion 8 is provided in the region of the crown portion 3 within a range 1/5 from the front end with respect to the front-rear direction length L1, deformation of the vicinity of the face portion of the crown portion 3 at the time of hitting a ball can be appropriately suppressed, and the face portion 2 can be sufficiently deflected. In particular, in the golf club head 1, the first high rigidity portion 8 is provided in the crown portion 3, and the rigidity of the crown portion 3, which is relatively easily deformed at the time of hitting a ball, can be increased, and the face portion 2 can be easily bent intensively. Thus, the golf club head 1 can increase the initial velocity of a shot, thereby increasing the flight distance of the shot. In addition, in the golf club head 1, since the first high rigidity portion 8 suppresses deformation of the crown portion 3, it is not necessary to increase the plate thickness of the crown portion 3 in order to increase the rigidity of the crown portion 3. Therefore, in the golf club head 1, the flexibility of the face portion 2 is easily improved, and the weight of the entire golf club head is reduced.

[ second embodiment ]

< Golf club head >

The golf club head 21 of fig. 8 and 9 has the same structure as the golf club head 1 of fig. 1 to 7, except that it has a rib 22 on the inner surface of the head main body 10, the rib being spaced apart from the face portion 2 and extending in a direction along the outer edge of the face portion 2.

The rib 22 is provided behind the face portion 2, apart from the face portion 2. The rib 22 is disposed along the upper edge 2a of the face portion 2 on the inner surface of the crown portion 3. More specifically, the rib 22 is disposed on the inner surface of the first high rigidity portion 8. That is, the rib 22 protrudes inward (downward) from the inner surface of the first high rigidity portion 8. The rib 22 is disposed along the lower edge 2b of the face portion 2 on the inner surface of the stem bottom portion 4. More specifically, the rib 22 is disposed on the inner surface of the second high rigidity portion 12. That is, the rib 22 protrudes inward (upward) from the inner surface of the second high rigidity portion 12. The rib 22 may be divided into a region disposed on the inner surface of the first high rigidity portion 8 and a region disposed on the inner surface of the second high rigidity portion 12, or as shown in fig. 8, the region disposed on the inner surface of the first high rigidity portion 8 and the region disposed on the inner surface of the second high rigidity portion 12 may be continuous.

Preferably, the shaft mounting portion 6 is located on an extension line of the rib 22. With this configuration, the rib 22 can be easily disposed in the vicinity of the face portion 2. In the golf club head 21, since the first high rigidity portion 8 can suppress deformation of the crown portion 3 and the second high rigidity portion 12 can suppress deformation of the sole portion 4, even when the rib portion 22 is not provided annularly on the inner surface of the head main body 10, flexibility of the face portion 2 can be sufficiently improved. Therefore, even when the heel-side end of the rib 22 is divided by the shaft mounting portion 6, the face portion 2 can be sufficiently deflected.

The lower limit of the average distance D5 between the rib 22 and the face portion 2 in the front-rear direction is preferably 2mm, and more preferably 3 mm. On the other hand, the upper limit of the average distance D5 is preferably 20mm, and more preferably 15 mm. If the average interval D5 does not satisfy the lower limit, there is a possibility that the deflection of the face portion 2 itself is hindered by the rib portion 22. In contrast, if the average interval D5 exceeds the upper limit, there is a possibility that it is difficult to collectively deflect the face portion 2. The "average interval between the rib and the face portion" means an average value of the minimum interval and the maximum interval between the reinforcing rib and the face portion.

< advantage >

Since the golf club head 21 has the rib 22 on the inner surface of the head main body 10, deformation of the portion of the head main body 10 other than the face portion 2 can be more reliably suppressed. This allows the face portion 2 of the golf club head 21 to be more intensively flexed.

[ other embodiments ]

The foregoing embodiments do not limit the configuration of the present invention. Therefore, the omission, replacement, or addition of constituent elements of the respective portions of the above-described embodiments can be performed based on the description of the present specification and the common technical knowledge, and they should be construed as being included in the scope of the present invention.

In the foregoing embodiment, the description has been given of the structure in which the first unit structure is a recess. Conversely, as shown in fig. 10, the first unit structures 31 may be protrusions. In this case, the depth of the first unit structure in the above embodiment can be replaced with the height of the first unit structure 31. The bottom surface of the first unit structure in the above embodiment can be replaced with the top surface 31a of the first unit structure 31.

In the above-described embodiment, the description has been given of the structure in which all the first unit structures constituting the first high rigidity portion are recessed. However, all of the plurality of first unit structures constituting the first high rigidity portion may be protrusions, or both of the recesses and the protrusions may be included. Also, the shapes of the plurality of depressions and the plurality of projections constituting the first high rigidity portion may be different from each other.

The shape of the first unit structure is not limited to the shape of the embodiment. For example, in the case where the shape of the first unit structure is not limited, in the golf club head 1 of fig. 2, the first high rigidity portion may include a plurality of first unit structures 11 and other unit structures 9 arranged on both sides in the longitudinal direction of the first unit structures 11.

The first unit structure may be a circle, a triangle, a polygon having a pentagon or more in a plan view, or the like. In the case where the first unit structure has a pair of side surfaces facing each other, the side surfaces may not extend in the front-rear direction. In this case, the pair of side surfaces are preferably formed symmetrically with respect to an imaginary plane parallel to and perpendicular to the front-rear direction. According to this structure, the deformation of the crown portion can be easily suppressed even in the left-right direction.

The first unit structure may be a structure without the bottom surface. For example, in the aforementioned first unit configuration, the bottom edges of the pair of side faces extending in the front-rear direction may be directly connected. In this case, the first unit structure constitutes a groove having a V-shaped cross section. The golf club head is easy to suppress the bending of the crown portion in the front-rear direction by the structure.

The rod bottom may not have the second high rigidity portion. When the rod bottom portion has the second high rigidity portion, the arrangement, shape, and the like of the second high rigidity portion are not particularly limited. In addition, the first high rigidity portion and the second high rigidity portion of the golf club head may be provided continuously in the longitudinal direction. That is, the golf club head may have a high rigidity portion that continues at the crown portion, the side face portion, and the sole portion.

In the case where the golf club head has the reinforcing rib, the shape, arrangement, and the like of the reinforcing rib are not particularly limited.

Industrial applicability

As described above, the golf club head according to one aspect of the present invention contributes to an increase in the flight distance of a shot.

Claims

1. A golf club head, characterized in that,

comprises a hollow club head main body having a club face part and a crown part extending rearward from an upper edge of the club face part,

the crown portion has a band-shaped first high-rigidity portion along an upper edge of the face portion,

the first high-rigidity portion has a plurality of first unit structures aligned along the upper edge,

the first unit is configured as a recess or a protrusion,

the first high rigidity portion is provided in a region of the crown portion ranging from a front end 1/5 with respect to the front-rear direction length.

2. The golf club head of claim 1,

the first unit structure has a pair of side surfaces extending in the front-rear direction and opposed to each other.

3. The golf club head according to claim 1 or 2,

the first unit structure has a length in the front-rear direction of 15mm or less.

4. The golf club head of any of claims 1-3,

all of the first units are configured as recesses.

5. The golf club head of any of claims 1-4,

the ratio of the length of the first high-rigidity portion to the length of the head main body in the toe-heel direction is 0.40 or more.

6. The golf club head of any of claims 1-5,

the head main body has a sole portion extending rearward from a lower edge of the face portion,

the pole bottom portion has a second high rigidity portion in the form of a band along a lower edge of the pole face portion,

the second high-rigidity portion has a plurality of second unit structures aligned along the lower edge.

7. The golf club head of any of claims 1-6,

the crown portion has a rib portion on an inner face thereof extending in a direction along an upper edge of the face portion.