JP2995407B1 - Golf club with plate - Google Patents

Abstract

The present invention provides a member with a plate in which a plate (decorative plate) bonded with a double-sided pressure-sensitive adhesive tape having a slit is bonded to a surface to which distortion or vibration is applied during use. SOLUTION: The plate is attached to an arbitrary portion of a member which is constantly exposed to vibration, bending, distortion, or rapid temperature change by a double-sided adhesive tape having at least one slit on one or both sides. A member with double-sided adhesive tape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pre- adhesive plate in which a plate (name plate or the like) adhered with a double-sided adhesive tape having slits is attached to a surface to which distortion or vibration is applied particularly during use.
The present invention relates to a golf club with a seat .

[0002]

2. Description of the Related Art In sports equipment such as a golf club head, a tennis racket, skiing equipment, etc., in addition to its functionality, recently, a name plate indicating a company name and a trademark of a manufacturer and other unique designs are provided. Attention has been paid to sports equipment with an aesthetically pleasing decorative color plate attached or mounted thereon. For example, taking a golf club head as an example, as shown in FIGS. 4 and 5, the golf club head has a head in which a plate 4 is adhered to a back surface 3 of a face portion 2 of a main body 1 of the golf club head by means of a double-sided adhesive tape 5 or the like. Golf clubs have been proposed, but the base material used for the double-sided adhesive tape used here is selected according to the adhesive surface to be used, but with long-term use, repeated bending, vibration, distortion, Has a problem that it is peeled off by rainwater or the like. JP-A-5-112
JP-A-184-184 proposes a double-sided adhesive tape with an improved base material for an external member for automobiles that can easily adhere to irregularities. In JP-A-7-041735,
A double-sided pressure-sensitive adhesive tape for bonding a vibration absorbing plate to a ski has been proposed, but there is no example of a golf club incorporating a double-sided pressure-sensitive adhesive tape with a slit.

[0003]

In particular, FIG.
The golf club as shown in FIG. 5 has the following problem. Adhesive strength of recent double-sided adhesive tapes has been significantly improved, and strong adhesive strength is maintained even in a sudden temperature change from the outside air temperature to the indoor temperature in a cold region, and in an environment in which vibration or repeated bending or distortion is applied to the bonding surface. However, when the size of the plate is increased or the weight is increased, the strength of the base material may be insufficient. That is, there is a problem that a stress generated by a temperature change, repeated bending or distortion is applied to the base material of the double-sided pressure-sensitive adhesive tape, and the base material is cracked, and the plate adhered by the double-sided pressure-sensitive adhesive tape eventually peels off and falls off. Japanese Patent Application Laid-Open No. H10-001645 proposes a double-sided pressure-sensitive adhesive tape having excellent performance against a constant load stress, but is not suitable for an environment where bending is repeatedly applied.

[0004] The problem is that the double-sided pressure-sensitive adhesive tape used for bonding the plates does not have sufficient ability to follow or buffer the impact, vibration, or repetitive distortion of the face caused by impact, resulting in insufficient strength. ,
Ultimately, this leads to the problem of the plate falling off. Particularly, recently, in the use of a golf club with a plate in a cold region or at the time of rain, the double-sided adhesive tape itself expands and freezes, or repeatedly expands and contracts due to the wetting, and the wet state may occur. When repeatedly exposed, the base material of the double-sided pressure-sensitive adhesive tape is cracked, and as a result, the base material is broken and peels off without performing the function as the pressure-sensitive adhesive tape, thereby causing inconvenience to the user.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned various problems and has the following structure to provide a golf club head with a plate at an arbitrary position on the back surface of the face portion. When bonding the plate, the plate is bonded to the back of the face with a double-sided adhesive tape provided with at least one slit, so that the double-sided adhesive tape itself expands, freezes, or expands and contracts repeatedly due to wetness. Further, it is possible to provide a golf club with a plate in which a double-sided pressure-sensitive adhesive tape having sufficient bonding strength is interposed without causing a crack in a base material of the double-sided pressure-sensitive adhesive tape even when exposed to repeated wet conditions. In such a golf club, the plate has sufficient bonding strength with the head main body, and furthermore, the impact at the time of impact,
Alternatively, it is possible to provide a golf club with a plate that withstands a thermal shock and has an aesthetic appearance excellent in corrosion resistance and durability at low cost. That is, the present invention has the following gist. 1) Play on the back of the face of the golf club head
In the golf club provided with a door, the face portion back
Least Article 1 on one or both sides between the plate
The double-sided adhesive tape with the slit
And a golf club with a plate. 2) 1) above the plate with the golf club, wherein it has facilities to waterproof the substrate of the double-sided adhesive tape. 3) The golf club with a plate according to 2) above, wherein the base material of the double-sided pressure-sensitive adhesive tape is an acrylic resin .
Bu. 4) above, wherein the providing the flange to the plate 1), Pres according to any one of 2) or 3)
Golf club with golf course. 5) Two or more materials are used for the double-sided pressure-sensitive adhesive tape base material, which is defined by forming at least one slit in the double-sided pressure-sensitive adhesive tape, 1) and 2) above.
Or the golf club with a plate according to any one of the above 3)
love. 6) The above double-sided pressure-sensitive adhesive tape, wherein two or more types of thicknesses are used for the double-sided pressure-sensitive adhesive tape base material, which is defined by forming at least one slit in the double-sided pressure-sensitive adhesive tape.
Or the golf club with a plate according to any one of the above 3)
love.

[0006]

Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cutaway view of the entire iron head of the plate according to the present invention. FIG.
(A) is an overall cutaway view of an iron golf club head as an example of a member with a double-sided adhesive tape according to the present invention.

FIG. 2B is an enlarged cross-sectional view of the plate attaching portion of the golf club head according to the present invention according to FIG. 2A. In FIG. 2 (b), a plate 4 is adhered to the surface of the back surface 3 of the face portion 2 which hits the ball via a double-sided adhesive tape 6 with a slit. Then, the provision of the 'slits 9,9 to completely separate the' the substrate 7 and the adhesive 8,8 of the double-sided adhesive tape 6 at any site of the double-sided adhesive tape 6. How to insert the slit,
As shown in FIGS. 8A, 8B, and 8C, three types of division can be performed, but the base material 7 must be divided. By adopting such a configuration, it becomes possible to follow the state of expansion, contraction, and wetting of the plate bonding portion due to expansion or shrinkage due to freezing or freezing of the double-sided adhesive tape itself during use of the golf club described above, and Durable adhesive strength can be maintained.

On the other hand, a golf club head having a conventional structure in which the conventional double-sided adhesive tape 5 having no slit as shown in FIGS. 4 and 5, the back surface 3 of the face portion 2 and the plate 4 are completely adhered without any gap. In this case, the base 7 of the double-sided pressure-sensitive adhesive tape is always stretched at both edges and both ends due to bending or distortion due to the impact of the face portion 2 and further contraction or wetting due to expansion and freezing of the double-sided pressure-sensitive adhesive tape. As a result, cracks occur in the base material starting from both edges and both ends . Once this crack occurs, the crack is amplified by the permeation of rainwater, further impact, and bending from the starting point, and finally, the base material 7 of the double-sided adhesive tape is broken, and the plate 4 does not perform its function. Will come off.

However, by inserting at least one slit 9 or 9 'into the double-sided adhesive tape 5 as in the present invention shown in FIG. 2, bending or distortion of the face portion due to the impact of the hit ball described above, or Even if the double-sided pressure-sensitive adhesive tape is repeatedly shrunk or wet due to freezing or expansion, the influence will be received at each of the divided portions of the double-sided pressure-sensitive adhesive tape 6, and some effects will not be affected by others. It is still possible to fulfill the function as a double-sided adhesive tape.

The double-sided pressure-sensitive adhesive tape used in the present invention has a thickness of 0.4 mm to 2 mm using an acrylic foam base material (in the present invention, a 3M VHB acrylic foam bonding material (registered trademark) is used). 0.0 mm double-sided adhesive tape was used. This acrylic foam bonding material has a high peel strength that can follow the deformation of the bonded part and has no residual stress, absorbs repulsion, is a room temperature sensitive adhesive type, prevents stress concentration due to surface bonding, It has various advantages such as sealing properties, excellent weather resistance and excellent vibration absorption. Therefore, the thickness to be used can be arbitrarily selected depending on the purpose of use, the type of the applied member, and the like. For example, it is also possible to use two or more types of materials for the double-sided pressure-sensitive adhesive tape substrate partitioned by putting at least one or more slits in the double-sided pressure-sensitive adhesive tape. ,
A material such as rubber having excellent followability and cushioning properties can be applied, and the base material of each double-sided pressure-sensitive adhesive tape partitioned by slitting can be changed for each partition. For example, there is a mode in which an acrylic foam material having high vibration absorption is used as a base material in a portion where deformation and bending are repeatedly applied and a large deformation amount is used, and a rubber material which is not easily cracked is used in a portion where a deformation amount is small. It is possible.

Although the width of the slit to be inserted into the double-sided pressure-sensitive adhesive tape is about 1 mm in this embodiment, it can be arbitrarily selected according to the purpose of use, the applied member, the type and location of the applied location, and the like. The practical width of the slit is preferably at most about 5 mm from the width of the double-sided pressure-sensitive adhesive tape in a state where the base material is divided. Furthermore, the number of slits to be put on the double-sided adhesive tape must be at least one, but depending on the size and thickness of the plate, the applied shock and the strength of vibration, a plurality of slits or a large number of There is no problem even if you put a slit. In the case of the iron golf club head according to one embodiment of the present invention, one or two slits can sufficiently cope with the strength of shock and vibration applied. In addition, the role of the slit has a great role to stop the progress of the crack, but it is also possible to improve the followability to the deformation.

Further, in the present invention, it is possible to use two or more kinds of thicknesses for the double-sided pressure-sensitive adhesive tape base material, which is divided by forming at least one slit in the double-sided pressure-sensitive adhesive tape. For example, when the adhesive surface is a curved surface such as a wood head surface of a golf club, the thickness of the base material can be changed for each section to match the curved surface. In the present invention, as shown in FIG. 3, flanges 10 and 10 'are provided at both ends of the plate 4 so as to cover the lower surface of the plate 4 so as to cover the double-sided adhesive tape 6 so as to be in contact with the back surface 2 of the face portion. Thus, it is possible to extend the life by protecting the double-sided adhesive tape 6 at the same time as having a waterproof effect.
In addition, it is also possible to prevent a decrease in adhesive strength by filling a resin material on a side surface of the double-sided adhesive tape and performing waterproofing by sealing to prevent water from entering the inside of the double-sided adhesive tape through the slit. .

[0013]

Next, the present invention will be described based on embodiments.
FIG. 6 is an example showing an embodiment of the present invention, and is a plan view of a golf club head in which a double-sided adhesive tape with a slit is adhered to a name plate. In FIG. 6, a substantially elliptical plate 4 having a length of about 20 mm and a width of about 50 mm is provided with a double-sided adhesive tape 6 having a slit having substantially the same shape as the plate 4. At a position of about 15 mm, two slits 9 and 9 ′ having a width of about 1 mm by complete division shown in FIG. As shown in FIG. 2B, the plate with the double-sided adhesive tape of FIG. 6 is adhered to the back surface 3 of the face portion 2 of the golf club head.

An embodiment of the present invention shown in FIG. 6 in Table 1 and a plate having the same shape as that shown in FIG. By performing a durability hit test to hit a golf ball under head speed,
The results of a test in which a plate bonded with a double-sided adhesive tape was repeatedly bent and strained were shown.

[0015]

[Table 1]

As can be seen from the results in Table 1, the plate provided with the conventional double-sided adhesive tape having no slit is as follows.
A crack was generated from the end of the double-sided adhesive tape, and the base layer 7 of the double-sided adhesive tape was broken at 2500 hits, and the plate dropped off, but the adhesive layer 8 'barely remained on the back of the plate portion of the iron head. Was. On the other hand, in a plate provided with a double-sided pressure-sensitive adhesive tape with a slit as an example of a member with a double-sided pressure-sensitive adhesive tape according to the present invention, the crack entering the base material of the double-sided pressure-sensitive adhesive tape stops at the position of the slit, and the crack proceeds to the inside from the slit. Without it, the plate did not fall off even after 7000 strokes. As shown in the above test results, in the member provided with the double-sided pressure-sensitive adhesive tape with a slit according to the present invention, the destruction of the base layer of the double-sided pressure-sensitive adhesive tape is reduced, and as a result, the plate bonded with the double-sided pressure-sensitive adhesive tape is bonded. The prevention of falling off from the surface was greatly improved.

FIG. 7 is a schematic view of a test in which a metal plate is reciprocated 120 times per minute using an elliptical cam to repeatedly generate vibration. A decorative plate used for a golf club head was adhered to a metal plate using a conventional double-sided pressure-sensitive adhesive tape without a slit and the double-sided pressure-sensitive adhesive tape with a slit according to the present invention, and shown in FIG. The test was performed. Table 2 shows the results obtained by the test of FIG.

[0018]

[Table 2]

As can be seen from the results shown in Table 2, in the conventional double-sided pressure-sensitive adhesive tape having no slit, cracks were generated from the end of the base material of the double-sided pressure-sensitive adhesive tape after 2000 vibrations.
The crack progressed to 50% of the substrate in 00 times. However, in the member with the double-sided pressure-sensitive adhesive tape with a slit according to the present invention, although cracks occurred from the end of the base material of the double-sided pressure-sensitive adhesive tape, the crack stopped at the slit portion even 3000 times,
Further crack progress could be completely blocked. As described above, the member provided with the slit double-sided adhesive tape according to the present invention is also applicable to a contact surface where bending and distortion are repeatedly applied in an environment where a rapid temperature change such as an indoor temperature from an outside air temperature in a cold region occurs. It has been found that the desired effect can be sufficiently exhibited.

[0020]

As described above, according to the present invention, as in a golf club head, the impact, vibration, repetitive bending or distortion when hitting a ball, or a sudden change from the outside air temperature in a cold region to the room temperature can be achieved. Even in an environment where shrinkage due to temperature change is applied, it is possible to prevent the plate attached to the back surface of the face from falling off. In the golf club head according to the present invention, by attaching a double-sided adhesive tape having at least one slit on one or both sides between the face back surface and the plate, the face portion and the plate have sufficient adhesive strength. In addition, it is possible to provide a golf club with a plate that withstands the impact or thermal shock at the time of impact and has an aesthetic appearance with excellent corrosion resistance and durability at low cost.

[Brief description of the drawings]

FIG. 1 is a view showing an entire cutaway view of an iron head with a plate according to the present invention.

2A is a cross-sectional view of FIG. 1, and FIG. 2B is an enlarged cross-sectional view of a portion B in FIG. 2A.

FIG. 3 is an enlarged sectional view of a portion B in FIG. 1 showing another embodiment of the iron head with a plate according to the present invention.

FIG. 4 is an overall schematic view of a conventional iron head with a plate.

FIG. 5 is an overall schematic diagram showing another embodiment of a conventional iron head with a plate.

FIG. 6 is an enlarged view of an adhesive portion using a double-sided adhesive tape based on an embodiment of an iron head with a plate according to the present invention.

FIG. 7 is a diagram showing an outline of a test for causing repeated vibration.

FIG. 8 is a view showing a method for separating a double-sided pressure-sensitive adhesive tape according to the present invention, wherein (a) shows a state in which a single-sided pressure-sensitive adhesive layer and a substrate are separated;
(B) is a figure which shows the state which divided | segmented the adhesive layer and the base material from both sides in zigzag, and (c) is a figure which shows the state which divided | segmented the adhesive layer and the substrate completely, respectively.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Golf club head main body 2 ... Face part 3 ... Face part back surface 4 ... Plate 5 ... Double-sided adhesive tape without slit 6 ... Double-sided adhesive tape with slit 7 ... Tape base 8, 8 '... Adhesive layer 9, 9' ... Slit 10, 10 ': flange 11: metal plate

Claims (6)

(57) [Claims] 1. A back portion of a face portion of a golf club head body.
In a golf club having a plate on its surface,
Between the back of the base and the plate on one or both sides
Take a double-sided adhesive tape with at least one slit
A golf club with a plate, characterized by being attached. 2. A method according to claim 1 plate with Gol wherein it has facilities to waterproof the substrate of the double-sided adhesive tape
Fukurab. 3. The plate according to claim 1, wherein the base material of the double-sided pressure-sensitive adhesive tape is an acrylic resin .
Golf club. 4. The golf club with a plate according to claim 1, wherein the plate is provided with a flange . 5. The double-sided pressure-sensitive adhesive tape base material, wherein at least one slit or more slits are formed in the double-sided pressure-sensitive adhesive tape, two or more kinds of materials are used. A plate with a plate according to any one of the above
Ruff club. 6. The double-sided pressure-sensitive adhesive tape according to claim 1, wherein two or more kinds of thicknesses are used for the double-sided pressure-sensitive adhesive tape base material which is partitioned by forming at least one slit in the double-sided pressure-sensitive adhesive tape. A plate with a plate according to any one of the above
Ruff club.