Trial golf club for golf club fitting and method for manufacturing same

Abstract

The present invention relates to a trial golf club for golf club fitting, comprising: a head; a receiving member installed inside the head; a shaft; an insertion member fixedly installed at an end of the shaft and inserted into the receiving member; and a cover member positioned while being fitted to the shaft, and fastened to the receiving member while the insertion member is inserted into the receiving member, wherein the head and the shaft have different manufacturers.

Description

Golf club for testing purposes for golf club fitting and method of manufacturing the same

[0001] The present invention relates to a golf club for testing and a method for manufacturing the same, and more specifically, to a golf club for testing and a method for manufacturing the same for golf club fitting that allows for testing by freely combining heads and shafts of different manufacturers and characteristics.

[0002] Generally, a golf club consists of a head that strikes the golf ball, a long rod-shaped shaft connected to the head, and a grip formed on the shaft. Types of golf clubs include drivers, woods, utilities, irons, and putters, and each golf club can be selected and used according to its different purpose.

[0003] Since the various characteristics of these golf clubs have a significant impact on distance and directional accuracy, users must be able to select golf clubs with specifications (e.g., head weight, head angle, shaft material, shaft stiffness, etc.) that suit their swing habits, age, and physical condition.

[0004] However, when purchasing golf clubs, stores generally only stock one type of demo club for buyers. Consequently, since buyers make purchasing decisions after trying out just one club, it was common for them to regret their purchase after actually using the club because the specifications did not suit them.

[0005] The objective of the present invention, devised to solve the aforementioned problems, is to provide a golf club for testing purposes for golf club fitting that allows for testing by freely combining multiple heads and shafts with different characteristics, and a method for manufacturing the same.

[0006] In addition, another objective of the present invention is to provide a golf club for testing and a method for manufacturing the same, with improved precision and durability for golf club fitting by applying different materials to the receiving member, the insertion member, and the cover member.

[0007] A golf club for testing golf club fitting according to an embodiment of the present invention comprises a head, a receiving member installed inside the head, a shaft, an insertion member fixedly installed at the end of the shaft and inserted inside the receiving member, and a cover member positioned in a state fitted onto the shaft and coupled to the receiving member while the insertion member is inserted inside the receiving member, wherein the head and the shaft may be characterized by being from different manufacturers.

[0008] In addition, the receiving member, the insertion member, and the cover member may each be characterized by being manufactured of different materials.

[0009] Additionally, the receiving member may include an aluminum material, the inserting member may include a steel material, and the cover member may include a titanium material.

[0010] Additionally, the receiving member comprises a base portion inserted into the head, a rotation-prevention groove formed on the bottom surface of the base portion, an extension portion extending outwardly from the base portion, a first screw structure formed on the outer circumference of the extension portion, and a flange portion protruding from the connection portion between the base portion and the extension portion; the insertion member comprises a body portion coupled to the end portion of the shaft, and a rotation-prevention projection protruding from the bottom surface of the body portion and inserted into the rotation-prevention groove; and the cover member may comprise a first cylindrical portion having a second screw structure formed on its inner circumference to screw-couple with the first screw structure of the extension portion, a second cylindrical portion extending from the first cylindrical portion, and a plurality of tool grooves formed on the outer circumference of the second cylindrical portion.

[0011] In addition, the basic diameter of the shaft may be set to 8.8 mm to 9.5 mm, and the diameter of the shaft end portion may be 8.65 mm to 9.45 mm by a sanding process on the end portion of the shaft.

[0012] A method for manufacturing a golf club for testing purposes for golf club fitting according to an embodiment of the present invention comprises the steps of: preparing a first golf club and a second golf club of different manufacturers; separating a first head and a first shaft of the first golf club and separating a second head and a second shaft of the second golf club; machining the head hole of the first head and the head hole of the second head to increase the diameter; performing a sanding process on the end portion of the first shaft and the end portion of the second shaft; installing a receiving member in the head hole of the first head and the head hole of the second head, respectively, and installing an insertion member in the end portion of the first shaft and the end portion of the second shaft, respectively; and inserting and coupling the insertion member of the second shaft into the receiving member of the first head and then fastening a cover member to the receiving member of the first head, and inserting and coupling the insertion member of the first shaft into the receiving member of the second head and then fastening a cover member to the receiving member of the second head, wherein the receiving member, the insertion member, and the cover The members may be characterized by being manufactured from different materials.

[0013] A golf club fitting connector according to an embodiment of the present invention is a golf club fitting connector that enables coupling and separation between a head and a shaft of different manufacturers, and may include a receiving member installed inside the head, an insertion member fixedly installed at the end of the shaft and inserted inside the receiving member, and a cover member positioned in a state fitted onto the shaft and coupled to the receiving member while the insertion member is inserted inside the receiving member.

[0014] According to the present invention as described above, a golf club for testing and a method for manufacturing the same can be provided for golf club fitting that allows for testing by freely combining several heads and shafts with different characteristics.

[0015] In addition, according to the present invention, by applying different materials to the receiving member, the insertion member, and the cover member, it is possible to provide a golf club for testing for golf club fitting with improved precision and durability, and a method for manufacturing the same.

[0016] FIG. 1 is a drawing showing a golf club for testing according to an embodiment of the present invention.

[0017] Figure 2 is a drawing showing a connector according to an embodiment of the present invention.

[0018] FIG. 3a is a drawing showing a receiving member according to an embodiment of the present invention, and FIG. 3b is a drawing showing the receiving member according to an embodiment of the present invention coupled to a head.

[0019] FIG. 4a is a drawing showing a shaft according to an embodiment of the present invention, FIG. 4b is a drawing showing an insertion member according to an embodiment of the present invention, FIG. 4c is a drawing showing a cross-section of the insertion member shown in FIG. 4b, and FIG. 4d is a drawing showing the shaft and the insertion member combined according to an embodiment of the present invention.

[0020] FIG. 5a is a drawing showing a cover member and a ring member according to an embodiment of the present invention, FIG. 5b is a drawing showing a cross-section of the cover member shown in FIG. 5a, and FIG. 5c is a drawing showing the state in which the cover member and the ring member according to an embodiment of the present invention are positioned on a shaft.

[0021] FIG. 6 is a diagram showing the combined state of a head and a shaft according to an embodiment of the present invention.

[0022] FIG. 7 is a drawing for explaining a method of manufacturing a golf club for testing according to an embodiment of the present invention.

[0023] In the following, embodiments related to the present invention are illustrated in the drawings and described in detail through the detailed description. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various different forms and should be understood to include all modifications, equivalents, and substitutions that fall within the spirit and scope of the present invention.

[0024] In describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are intended merely to distinguish the component from other components, and the essence, order, or sequence of the component is not limited by such terms. Furthermore, terms such as "comprising," "composing," or "having" as used in this specification, unless specifically stated otherwise, mean that the component may be inherent; therefore, they should be interpreted as allowing for the inclusion of additional components rather than excluding other components.

[0025] Hereinafter, with reference to the drawings related to embodiments of the present invention, a golf club for testing (hereinafter referred to as a golf club for testing) for golf club fitting according to an embodiment of the present invention will be described.

[0026] FIG. 1 is a drawing showing a golf club for testing according to an embodiment of the present invention.

[0027] A golf club (1) for testing according to an embodiment of the present invention may include a head (10) for striking a golf ball, a shaft (20) connected to the head (10), a grip (30) formed on one side of the shaft (20), and a golf club fitting connector (50, hereinafter connector) installed at the connection portion between the head (10) and the shaft (20).

[0028] That is, through the connector (50) according to the embodiment of the present invention, it is possible to test the swing by combining multiple heads (10) with different weights and shapes and multiple shafts (20) with different lengths and materials in various forms, so the user can select a head (10) and shaft (20) suitable for their body type, swing style, age, physical condition, etc.

[0029] In addition, when using the connector (50) according to the embodiment of the present invention, there is an advantage that various types of head (10) and shaft (20) combinations are possible regardless of the manufacturer or brand. Accordingly, the golf club (1) for testing according to the embodiment of the present invention can be configured to include a head (10) and a shaft (20) from different manufacturers.

[0030]

[0031] Figure 2 is a drawing showing a connector according to an embodiment of the present invention.

[0032] Referring to FIG. 2, a connector (50) according to an embodiment of the present invention may be configured to include a receiving member (100), an insertion member (200), and a cover member (300), and may additionally include a ring member (400).

[0033] The receiving member (100) can be installed inside the head (10) and can be inserted through a head hole (11, see FIG. 3a) that exists for connecting the shaft (20). Before inserting the receiving member (100), additional processing steps using drilling equipment, etc., may be performed to adjust the diameter of the head hole (11), and a separate adhesive may be used for the fixed connection between the head (10) and the receiving member (100).

[0034] Additionally, the receiving member (100) may be made of a metal material. For example, the receiving member (100) may be manufactured from aluminum, in which case there is an advantage that the manufacturing process of the receiving member (100), which has a complex shape compared to the insertion member (200) and the cover member (300), becomes easier.

[0035] The insertion member (200) is fixedly installed at the end of the shaft (20) and may have a shape that allows it to be inserted into and removed from the receiving member (100) installed on the head (10). An additional processing step may be performed on the shaft (20) before the insertion member (200) is installed, and a separate adhesive may be used for the fixed connection between the shaft (20) and the insertion member (200).

[0036] Additionally, the insert member (200) may be made of the same material as the shaft (20) in order to maintain the characteristics of the shaft (20) as much as possible. For example, the insert member (200) may be manufactured from steel, and carbon graphite may also be used.

[0037] The cover member (300) is positioned so as to be fitted onto the shaft (20), and can be fastened while the insertion member (200) is inserted into the receiving member (100). Accordingly, the insertion member (200) can be prevented from detaching from the receiving member (100).

[0038] Additionally, the cover member (300) may be made of a metal material. For example, the cover member (300) may be made of titanium, in which case the strength and durability of the cover member (300) may be improved.

[0039] The ring member (40) is positioned in a state fitted onto the shaft (20) and can be placed on the upper side of the cover member (300). When the head (10) and the shaft (20) are separated, this ring member (40) restricts the movement of the cover member (300) to prevent the cover member (300) from detaching from the shaft (20), and when the head (10) and the shaft (20) are combined, it provides elastic support to the cover member (300) to strengthen the fastening force of the cover member (300).

[0040] Additionally, the ring member (40) may be formed from a material having elasticity, and may include, for example, a rubber material, but is not limited thereto.

[0041] Meanwhile, the total weight of the receiving member (100), the insertion member (200), and the cover member (300) can be set to 10g to 14g. This is because if the total weight of the receiving member (100), the insertion member (200), and the cover member (300) is less than 10g, the weight becomes lighter compared to a normal golf club, and if the total weight of the receiving member (100), the insertion member (200), and the cover member (300) exceeds 14g, the weight becomes heavier compared to a normal golf club, and the hitting effect is significantly reduced.

[0042]

[0043] FIG. 3a is a drawing showing a receiving member according to an embodiment of the present invention, and FIG. 3b is a drawing showing the receiving member according to an embodiment of the present invention coupled to a head.

[0044] Referring to FIG. 3a and FIG. 3b, a receiving member (100) according to an embodiment of the present invention may include a base portion (110), a flange portion (120), and an extension portion (130).

[0045] The base portion (110) is a part inserted into the head hole (11) and may be formed in a cylindrical shape having an internal receiving space (111). Additionally, an anti-rotation groove (112) may be formed on the inner bottom surface of the base portion (110).

[0046] The anti-rotation groove (112) can be combined with the anti-rotation projection (220, see FIG. 4b) of the insertion member (200) to prevent the head (10) or shaft (20) from rotating independently. To this end, the anti-rotation groove (112) may be formed in a polygon (e.g., a hexagon) or an ellipse, and the anti-rotation projection (220) of the insertion member (200) may have a shape corresponding to the anti-rotation groove (112).

[0047] The extension portion (130) is formed to extend outward from the base portion (110) and may have an internal space communicating with the receiving space (111) of the base portion (110). Additionally, a first screw structure (131) for fastening with a cover member (300) may be formed on the outer surface of the extension portion (130).

[0048] The flange portion (120) is formed to protrude horizontally at the connection point between the base portion (110) and the extension portion (130), thereby partitioning the flange portion (120) and the extension portion (130). Additionally, the lower side of the flange portion (120) is positioned to be in close contact with the upper part of the head (10), and the upper side of the flange portion (120) can be in close contact with the cover member (300) when the cover member (300) is subsequently fastened.

[0049]

[0050] FIG. 4a is a drawing showing a shaft according to an embodiment of the present invention, FIG. 4b is a drawing showing an insertion member according to an embodiment of the present invention, FIG. 4c is a drawing showing a cross-section of the insertion member shown in FIG. 4b, and FIG. 4d is a drawing showing the shaft and the insertion member combined according to an embodiment of the present invention.

[0051] Referring to FIG. 4a, the basic diameter (a1) of the shaft (20) according to an embodiment of the present invention can be set to 8.8 mm to 9.5 mm.

[0052] At this time, the end portion (21) of the shaft (20) is a part that is coupled to the body portion (210) of the insert member (200), and a sanding process may be performed on the end portion (21) before coupling with the insert member (200). This is to increase the bonding strength when proceeding with the bonding process with the insert member (200) by removing the coating surface, etc. present on the surface of the end portion (21), and can be performed by equipment such as a belt sander. Accordingly, the end portion (21) of the shaft (20) may be set to a diameter (a2) that is reduced by 0.05 mm to 0.15 mm compared to the existing diameter (a1). For example, the diameter (a2) of the end portion (21) of the shaft (20) may be set to 8.65 mm to 9.45 mm.

[0053] Additionally, the length (a3) ​​of the end portion (21) of the shaft (20) coupled to the insertion member (200) can be set to 20mm to 26mm. This is because if the length (a3) ​​of the end portion (21) is less than 20mm, the adhesive force with the insertion member (200) is weakened, and there is a risk of damage occurring during the test process, and if the length (a3) ​​of the end portion (21) exceeds 26mm, the characteristics of the existing shaft (20) are limited.

[0054] Referring to FIGS. 4b to 4d, an insertion member (200) according to an embodiment of the present invention may include a body portion (210) and a rotation-preventing projection (220).

[0055] The body portion (210) is a part into which the end portion (21) of the shaft (20) is inserted, and may be formed in a cylindrical shape having an internal receiving space (211). Additionally, an anti-rotation projection (220) protruding outward may be formed on the outer bottom surface of the body portion (210).

[0056] The anti-rotation projection (220) is a part that is coupled with the anti-rotation groove (112) described above, and can be formed in a polygon (e.g., a hexagon) or an ellipse. FIG. 4b illustrates a case where the anti-rotation projection (220) is formed in the shape of a hexagonal column, and the corner portion (222) of the anti-rotation projection (220) can be designed as an inclined surface (222) having a predetermined angle (d). Through this inclined surface (222), the anti-rotation projection (220) can be easily inserted and coupled into the anti-rotation groove (112). At this time, the angle (d) formed by the inclined surface (222) of the anti-rotation projection (220) and the end surface (221) of the anti-rotation projection (220) can be set to 20° to 40°. This is because if the angle (d) is less than 20°, the connection between the anti-rotation projection (220) and the anti-rotation groove (112) is not smooth, and if the angle (d) exceeds 40°, the fixing force between the anti-rotation projection (220) and the anti-rotation groove (112) is weakened, which may cause the shaft (20) to slip during the test swing.

[0057] Additionally, the height (b3) of the anti-rotation projection (220) can be set to 3mm to 4mm. This is because if the height (b3) of the anti-rotation projection (220) is less than 3mm, the bonding force with the anti-rotation groove (112) is reduced, and if the height (b3) of the anti-rotation projection (220) exceeds 4mm, interference with the head (10) structure may occur.

[0058] Additionally, the diameter (b4) of the anti-rotation protrusion (220) can be set to 4mm to 6mm. This is because if the diameter (b4) of the anti-rotation protrusion (220) is less than 4mm, there is a risk that the anti-rotation protrusion (220) may be damaged by external impact or the like while the anti-rotation protrusion (220) is coupled to the anti-rotation groove (112), and if the diameter (b4) of the anti-rotation protrusion (220) exceeds 6mm, the manufacturing cost increases due to the unnecessary area.

[0059] Meanwhile, the total length (b1) of the insert member (200) can be set to 25mm to 30mm. This is because if the total length (b1) of the insert member (200) is less than 25mm, the fixing force with the head (10) is weakened and damage to the connection part may occur, and if the total length (b1) of the insert member (200) exceeds 30mm, the fixing force with the head (10) is excessive and the characteristics of the shaft (20) are limited.

[0060] Additionally, the length (b2) of the receiving space (211) formed inside the body part (210) can be designed to be the same as the length (a3) ​​of the end part (21) of the shaft (20) described above. For example, the length (b2) of the receiving space (211) can be set to 20mm to 26mm, as previously explained, if the length (b2) of the receiving space (211) is less than 20mm, the adhesion with the shaft (20) is weakened, and there is a risk of damage occurring during the test process, and if the length (b2) of the receiving space (211) exceeds 26mm, the characteristics of the existing shaft (20) are limited.

[0061] Additionally, the diameter (c1) of the receiving space (211) formed inside the body part (210) can be designed to be the same as the diameter (a2) of the end part (21) of the shaft (20) described above. For example, the diameter (c1) of the receiving space (211) can be set to 8.65 mm to 9.45 mm.

[0062] Additionally, the thickness (c2) of the body part (210) surrounding the receiving space (211) can be set to 0.3mm to 0.5mm. This is because if the thickness (c2) of the body part (210) is less than 0.3mm, the strength is reduced and there is a risk of breakage during use, and if the thickness (c2) of the body part (210) exceeds 0.5mm, it may be difficult to connect with the shaft (20).

[0063]

[0064] FIG. 5a is a drawing showing a cover member and a ring member according to an embodiment of the present invention, FIG. 5b is a drawing showing a cross-section of the cover member shown in FIG. 5a, and FIG. 5c is a drawing showing the state in which the cover member and the ring member according to an embodiment of the present invention are positioned on a shaft.

[0065] Referring to FIGS. 5a to 5c, a cover member (300) according to an embodiment of the present invention may include a first cylindrical portion (310), a second cylindrical portion (320), and a tool groove (330).

[0066] The first cylindrical part (310) is a part that screw-couples with the extension part (130), and a second screw structure (311) corresponding to the first screw structure (131) of the receiving member (100) may be formed on the inner surface of the first cylindrical part (310). For example, if the first screw structure (131) has a male screw shape, the second screw structure (311) may have a female screw shape.

[0067] Additionally, the height (e1) of the first cylindrical part (310) can be designed to be 4mm to 6mm. This is because if the height (e1) of the first cylindrical part (310) is less than 4mm, the fastening force with the cover member (300) is reduced, and there is a risk of damage, etc., and if the height (e1) of the first cylindrical part (310) exceeds 6mm, it affects the characteristics of the existing shaft (20).

[0068] The second cylindrical part (320) is formed as an extension from the first cylindrical part (310), and a plurality of tool grooves (330) may be formed on the outer surface of the second cylindrical part (320). The tool grooves (330) are parts into which a tool, such as a wrench, is inserted, and the user can easily perform screw fastening between the cover member (300) and the receiving member (100) by rotating the cover member (300) through the tool.

[0069] At this time, the tool groove (330) can be formed long to have the same width (e2) in the horizontal direction, for example, the width (e2) of the tool groove (330) can be designed to be 2mm to 2.5mm.

[0070]

[0071] FIG. 6 is a diagram showing the combined state of a head and a shaft according to an embodiment of the present invention.

[0072] Referring to FIG. 6, the head (10) and shaft (20) according to an embodiment of the present invention can be combined through a connector (50) to form a test golf club (1).

[0073] First, an insertion member (200) provided on the shaft (20) can be inserted and coupled to the receiving member (100) of the head (10), and accordingly, a rotation-preventing projection (220) provided on the body part (210) can be inserted and coupled to the rotation-preventing groove (112) provided on the base part (110).

[0074] Subsequently, the cover member (300) is moved toward the head (10) and rotated to be coupled with the receiving member (100), and the ring member (400) is moved toward the cover member (300) to closely support the portion between the upper surface of the second cylindrical part (320) of the cover member (300) and the shaft (20).

[0075]

[0076] FIG. 7 is a drawing for explaining a method for manufacturing a golf club for testing according to an embodiment of the present invention. Hereinafter, with reference to FIGS. 1 to 7, a method for manufacturing a golf club for testing according to an embodiment of the present invention will be explained, and details that overlap with the above-described embodiment will be omitted.

[0077] Referring to FIG. 7, a method for manufacturing a golf club for testing according to an embodiment of the present invention may include a golf club preparation step (S10), a head and shaft separation step (S20), a head and shaft processing step (S20), a receiving member and insertion member installation step (S40), and a cover member fastening step (S50).

[0078] In the golf club preparation step (S10), a first golf club and a second golf club may be prepared. Here, the first golf club and the second golf club may refer to existing commercial products that are different from each other; for example, the first golf club and the second golf club may be products from different manufacturers, or products that differ in head weight, head angle, shaft material, shaft strength, etc. At this time, the first golf club is composed of a first head and a first shaft coupled to the first head, and the second golf club is composed of a second head and a second shaft coupled to the second head.

[0079] In the head and shaft separation step (S20), the first head and first shaft of the first golf club can be separated, and the second head and second shaft of the second golf club can be separated.

[0080] In the head and shaft machining step (S30), the head hole of the first head and the head hole of the second head are machined to increase the diameter, and a sanding process can be performed on the end portion of the first shaft and the end portion of the second shaft. As previously described, the machining process for the head hole can be performed using a drilling machine, and the machining process for the shaft can be performed using a belt sander. Accordingly, the diameter of the end portion of the first shaft and the end portion of the second shaft is reduced, and the diameter of the end portion of each shaft can be set to 8.65 mm to 9.45 mm.

[0081] In the step (S40) for installing the receiving member and the inserting member, the receiving member (100) is installed in the head hole of the first head and the head hole of the second head, respectively, and the inserting member (200) is installed in the end portion of the first shaft and the end portion of the second shaft, respectively.

[0082] In the cover member fastening step (S50), the insertion member (200) of the second shaft is inserted and coupled to the receiving member (100) of the first head, and then the cover member (300) is fastened to the receiving member (100) of the first head. Then, the insertion member (200) of the first shaft is inserted and coupled to the receiving member (100) of the second head, and then the cover member (300) is fastened to the receiving member (100) of the second head, thereby completing the first test golf club and the second test golf club, which are combined differently. In this step (S50), a ring member (400) may additionally be installed on the first test golf club and the second test golf club, respectively.

[0083] A person skilled in the art to which the present invention pertains will understand that the present invention may be implemented in other specific forms without altering its technical concept or essential features. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims set forth below rather than by the detailed description above, and all modifications or variations derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included within the scope of the present invention.

Claims

1. Head; A receiving member installed inside the head; shaft; An insertion member fixedly installed at the end of the shaft and inserted into the receiving member; and A cover member positioned in a state fitted onto the shaft and coupled to the receiving member while the insertion member is inserted inside the receiving member; comprising The head and the shaft mentioned above are, A golf club for testing purposes for golf club fitting, characterized by different manufacturers.

2. In Paragraph 1, The above receiving member, the above insertion member, and the above cover member are, A golf club for testing purposes for golf club fitting, characterized by being manufactured from different materials.

3. In Paragraph 2, The above receiving member includes an aluminum material, and The above insert member includes a steel material, and The above cover member is a golf club for testing purposes for golf club fitting, comprising titanium material.

4. In Paragraph 1, The above receiving member is, A base part inserted inside the head; A rotation prevention groove formed on the bottom surface of the base portion; An extension portion formed extending outward from the above base portion; A first screw structure formed on the outer surface of the extension portion; and A flange portion protruding from the connection portion of the base portion and the extension portion; comprising The above insert member is, A body portion coupled to the end portion of the shaft; and It includes a rotation-prevention projection formed protruding from the bottom surface of the body portion and inserted and coupled into the rotation-prevention groove; The above cover member is, A first cylindrical part having a second screw structure formed on its inner surface and screw-coupled with the first screw structure of the extension part; A second cylindrical portion extending from the first cylindrical portion; and A golf club for testing golf club fitting, comprising: a plurality of tool grooves formed on the outer surface of the second cylindrical part.

5. In Paragraph 4, A golf club for testing golf club fitting, characterized in that the basic diameter of the shaft is set to 8.8mm to 9.5mm, and the diameter of the shaft end portion is 8.65mm to 9.45mm by a sanding process on the end portion of the shaft.

6. A step in which the manufacturer prepares different first golf clubs and second golf clubs; A step of separating the first head and the first shaft of the first golf club and separating the second head and the second shaft of the second golf club; A step of increasing the diameter by machining the head hole of the first head and the head hole of the second head; A step of performing a sanding process on the end portion of the first shaft and the end portion of the second shaft; A step of installing a receiving member in each of the head hole of the first head and the head hole of the second head, and installing an insertion member in each of the end of the first shaft and the end of the second shaft; and The method comprises the step of inserting and coupling the insertion member of the second shaft into the receiving member of the first head, then fastening the cover member to the receiving member of the first head, and then inserting and coupling the insertion member of the first shaft into the receiving member of the second head, and then fastening the cover member to the receiving member of the second head. A method for manufacturing a golf club for testing purposes for golf club fitting, characterized in that the receiving member, the insertion member, and the cover member are each made of different materials.

7. A connector for golf club fitting that enables the coupling and separation of different heads and shafts by a manufacturer, A receiving member installed inside the head; An insertion member fixedly installed at the end of the shaft and inserted into the receiving member; and A golf club fitting connector comprising: a cover member positioned in a state fitted onto the shaft, and coupled to the receiving member while the insertion member is inserted inside the receiving member.

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