JP2020081281A - Golf tee - Google Patents

Abstract

To provide an inexpensive golf tee free from destroying a natural environment even when it is left in a golf course, having proper hardness and strength, and easy to use.SOLUTION: A golf tee 1 formed by using a biodegradable rubber includes: a ball mounting part 2 having a seating face part 21 for mounting a golf ball, at a front face side of the golf tee 1; an intermediate part 4 having rubber hardness larger than that of the ball mounting part 2, at a rear face side of the ball mounting part 2 (a displacement part 41 in hitting a ball, having a cross sectional area smaller than that of the ball mounting part 2, and a roughly spherical tee grip 42 part having a cross sectional area larger than that of the displacement part 41 in hitting a ball, and a cross sectional area smaller than that of the ball mounting part 2, at a rear face side of the displacement part 41 in hitting a ball); and an insertion part 6 for piercing the lower end part into the ground, having rubber hardness larger than that of the intermediate part 4, at a rear face side of the intermediate part 4.SELECTED DRAWING: Figure 2

Description

The present invention relates to a golf tee that is easy to use and inexpensive, has a suitable hardness and strength without damaging the natural environment even if it is left in a golf course.

Conventionally, golf tees (hereinafter referred to as “tees”) were made of wood, but these days, synthetic resins such as polyethylene and polypropylene have become the mainstream because they are easy to manufacture and cost can be kept low. is occupying. These tees are often left in the golf course because the golfer has left them behind on the tee ground, flies forward on the tee shot, or drops the fairway or the like while moving. In addition, at the time of a tee shot, the tee is often broken at a piercing portion for piercing the tee into the ground and left partially in the ground of the tee ground. When the tees (including part of the tees) left in this manner are made of synthetic resin, they often remain on the ground (on the grass) or in the ground without decaying.

If the tee does not rot, it may cause the environment of the golf course to be depleted, such as depleting the grass. Further, when maintaining the inside of a golf course using a lawn mower or the like, such a tee is caught in the blade portion of the lawn mower, which causes a failure of the machine. Further, the risk of damaging the worker, such as crushed tee fragments flying and hitting the worker, increases.

Therefore, as shown in FIG. 3, the stab portion 600 and the ball mounting portion 200 are formed into a tube as a tee for preventing the tee from flying forward at the time of the tee shot and breaking the tee at the stab portion. The golf tee 100 (patent document 1) made of a resin, which is connected by a connecting member 700 in the shape of a ball, and in which the ball placing portion 200 slides along the connecting member 700 at the time of hitting, or as shown in FIG. By forming the insertion portion 600 with a hard member (hard resin), forming the ball mounting portion 200 with a flexible member (soft resin, soft rubber), and connecting the hard member and the soft member with the connecting portion 710 of the hard member, At the time of hitting a ball, there is a golf tee 100 in which only the ball placing part 200 made of a flexible member is bent and bent by the connecting part 710 while the stab part 600 remains intact, and the ball is restored to its original state after hitting. Reference 2).

On the other hand, as an approach to prevent environmental damage, biodegradable resin compositions (for example, starch or derivatives derived from starch-based agricultural products are used as a main raw material, and these are modified with hydrophilic and biodegradable properties. A polyvinyl alcohol-based resin is used), and as shown in FIG. 5A, the ball mounting portion 200 having a seat surface portion 210 on the front surface side and the ball mounting portion 200 are connected to the back surface side. , A stab portion 600 having a smaller cross-sectional area than the ball placing portion 200, and the stab portion 600 has an intermediate portion 400 and an intermediate portion 400 that have a substantially constant cross-sectional area or change as the distance from the ball placing portion 200 increases. In the golf tee 100, the ball mounting portion 200 and the stab portion 600 are formed of the biodegradable resin composition described above. When the maximum width of the maximum cross section of the intermediate portion 400 is X and the total length of the stab portion 600 is Y, the golf tee with Y/X of 5.0 or less is formed integrally with the object. is there. Here, when Y/X is 5.0 or less, the stab portion 600 is likely to be deformed (bent or the like) in proportion to the entire length thereof, so that the stab portion 600 has a relatively wide rigidity ( This is for the purpose of providing a portion having a large bending rigidity and the like and making it difficult to deform throughout the stab portion 600 (Patent Document 3).

Further, in Patent Document 3, as shown in FIG. 5( b ), a ball-depositing portion 200 and a stab portion 600 are integrally formed mainly of a biodegradable resin composition containing soda-lime glass fiber. Golf tees are also disclosed.

Design Registration No. 1189064 Utility model registration No. 3164074 Japanese Utility Model Publication No. 7-15069

By the way, it is considered that the following points are required for golf tees.
First, in terms of performance, do not damage the driver head in the ball mounting part, reduce the resistance at impact and improve the removal of the head, and do not deform even the hard tee ground at the stab part, easy to stab thing. Secondly, it is difficult to deform, chip, and break so that it can be used as long as possible. Next, be environmentally friendly. And it is cheap.

An evaluation of the background art with respect to the above requirements is as follows. The tees of Patent Document 1 and Patent Document 2 are excellent in performance, but when the head hits the hard portion, the hard portion is deformed and the entire shape cannot be restored. Further, the connecting member 700 may be cut, and the ball mounting portion 200 may fly forward during the tee shot. In addition, it is expensive.
On the other hand, the tee of Patent Document 3 is excellent in terms of environment, but in FIG. 5A, when the stab portion 600 becomes long, the intermediate portion 400 becomes extremely thick (for example, the stab portion 600 is about 50 mm long). In the case of, the maximum width X of the maximum cross section of the intermediate portion 400 is 10 mm or more). Further, in FIG. 5B, since the soda-lime glass fiber is mixed according to the hardness of the stabbed portion 600, the ball mounting portion 200 becomes hard, and in terms of performance, the resistance at impact is particularly reduced. , There is a problem in improving the removal of the head. In addition, the problem of deformation and chipping of the ball mounting portion 200 remains.

Therefore, the present invention relates to a golf tee, which does not damage the natural environment even if it is left in a golf course, and does not hinder the maintenance work of turf or the like, has appropriate hardness and strength, and is easy to use, It is to provide an inexpensive golf tee.

In order to solve the above-mentioned problems, the present invention according to claim 1 is characterized in that the golf tee is formed by using biodegradable rubber, and a seat for mounting a golf ball is provided on the surface side of the golf tee. A ball mounting portion having a surface, an intermediate portion having a larger rubber hardness than the ball mounting portion on the back surface side of the ball mounting portion, and a rubber hardness greater than the intermediate portion on the back surface side of the intermediate portion, A golf tee characterized by having a sharpened piercing portion for piercing the lower end portion into the ground.

According to the present invention of claim 1, since it has the above-mentioned configuration, the ball placing portion is soft, and when the ball is placed, the weight of the ball is absorbed and the ball can be placed stably. In addition, since the mounting portion is deformed at the time of hitting the ball and returns to the original shape after hitting the ball, it is possible to prevent chipping and to stably load the ball for a long time.

Since the intermediate portion has a rubber hardness between the ball placing portion and the stabbed portion, when the ball is placed on the ball placing portion, the intermediate portion does not bend and bend, and the position of the ball is fixed. Can be maintained stable. On the other hand, at the time of hitting a ball, since it bends and bends, the softness of the ball mounting portion does not damage the driver head and the head can be removed easily. If the impact at the time of hitting the ball is small, the intermediate part may return to its original shape, and if the impact is large, the shape of the intermediate part may not return to its original shape. Since the shape can be recovered by returning to the shape of, the golf tee can be used for a long time.

Since the piercing part has a large rubber hardness, it is easy to pierce even on a hard tee ground. Further, even when hitting a ball, the middle portion of the upper portion is bent and bent, so that the golf tee can be used for a long period of time with very few breaks at the stab portion.

Further, since the golf tee is formed by using biodegradable rubber, it does not damage the natural environment even if it is left in the golf course, and does not hinder the maintenance work of grass and the like.

According to the present invention of claim 2, the rubber hardness of the biodegradable rubber forming the ball mounting portion, the intermediate portion and the stabbed portion is measured by a durometer type A (Shore A) based on the standard JIS K 6253, The golf tee has a ball mounting portion of 40 or more and less than 60, an intermediate portion of 50 or more and less than 80, and a piercing portion of 80 or more.

The rubber hardness of the ball mounting portion is 40 or more and less than 60 when measured by the durometer type A (Shore A) based on the standard JIS K6253. If the hardness is less than 40, the ball is too soft and has a sticky feeling, and when the ball is placed, the ball mounting portion sticks to the ball and the resistance at impact increases, which is not desirable. On the other hand, when the hardness is 60 or more, it becomes hard, and when the placing portion is deformed at the time of hitting the ball, the original shape is not sufficiently restored, and it becomes difficult to stably place the ball after the next time, which is not desirable.

The hardness of the intermediate portion is 50 or more and less than 80 when measured by the durometer type A (Shore A) based on the standard JIS K6253. When the hardness is less than 50, the hardness is soft, and when the ball is placed on the placing portion, the middle portion is apt to bend and bend, which is not desirable. On the other hand, when the hardness is 80 or more, the golf ball becomes hard and is broken at the middle portion at the time of hitting the ball, and a portion above the broken portion, that is, a part of the ball mounting portion and the middle portion flies forward. The tee cannot be used for a long time.

The hardness of the stabbed portion is 80 or more when measured by the durometer type A (Shore A) based on the standard JIS K6253. When the hardness is less than 80, the piercing portion is bent and it is difficult to pierce in the case of a hard tee ground, which is not desirable.

According to the present invention of claim 3, the intermediate portion has a hitting displacement portion having a smaller cross-sectional area than the ball placing portion, and the back surface side of the hitting displacement portion has a substantially spherical shape, which is more than the hitting displacement portion. A tee for golf having a tee grip portion having a large cross-sectional area and a cross-sectional area smaller than that of the ball mounting portion.

According to the third aspect of the present invention, the middle portion has a hitting displacement portion having a smaller cross-sectional area than the ball mounting portion, and the back surface side of the hitting displacement portion has a substantially larger cross-sectional area than the hitting displacement portion. Since it has a spherical tee grip, it can be stabbed with the tee grip when teeing, and has good operability. On the other hand, at the time of hitting a ball, the displacement portion at the time of hitting existing between the ball placing portion and the tee grip portion is mainly displaced, that is, it bends and bends, and since the cross-sectional area of the tee grip portion is smaller than that of the ball placing portion. The resistance at impact can be reduced and the head can be removed easily. Further, when the impact at the time of hitting the ball is small, the displacement portion at the time of hitting returns to the original shape, and when the impact is large, the shape of the displacement portion at the time of hitting may not be restored to its original shape. Since the shape can be recovered by returning it to its original shape by hand, the golf tee can be used for a long time.

According to the present invention of claim 4, the rubber hardness of the biodegradable rubber forming the displacement portion at the time of hitting the ball and the tee grip portion is 50 or more 80 when measured by the durometer type A (Shore A) based on the standard JIS K6253. It is less than the golf tee.

According to the present invention of claim 4, since the hardness of the displacement portion at the time of hitting the ball and the tee grip portion is 50 or more and less than 80, the displacement portion at the time of hitting the ball and the tee grip portion bend and bend when the ball is placed on the mounting portion. The position of the ball can be maintained stably. On the other hand, at the time of hitting the ball, since the displacement portion at the time of hitting is bent and bent, it is possible to improve the removal of the head in combination with the softness of the ball mounting portion.

The hardness of the displacing portion at the time of hitting the ball and the hardness of the tee grip portion may be the same or different. The hand-grasping part is particularly related to sensibility, which contributes to the expansion of product variations.

According to the fifth aspect of the present invention, a connecting portion having a rubber hardness between the respective rubber hardnesses is formed between the ball mounting portion and the intermediate portion and between the intermediate portion and the piercing portion. It is a golf tee.

According to the present invention as set forth in claim 5, a connection portion having a rubber hardness between the ball mounting portion and the intermediate portion, and between the intermediate portion and the piercing portion is formed. Since it is possible to connect in the material surface from the ball placing part to the puncturing part, it is possible to prevent breakage at the interface of each part when the ball placing part, the intermediate part and the puncturing part are clearly distinguished. be able to.

The present invention of claim 6 is a golf tee in which the biodegradable rubber is a natural rubber mixture. Natural rubber is one of the natural resources, and it is made from petroleum and naphtha such as synthetic rubber, as well as the advantage that it does not disturb the natural environment even if it is left in the golf course and does not interfere with the maintenance work of grass etc. Since it is different from chemical industrial products, it has excellent overall environmental performance with no emission of carbon dioxide in the manufacturing process. The elasticity of natural rubber is outstanding, and its variations exist over a wide range. The natural rubber mixture means a mixture of natural rubber and a compounding agent such as a reinforcing agent, a filler, a softening agent and a vulcanizing agent. Therefore, it is possible to easily obtain a desired hardness depending on the amount of the compounding agent added, etc., and it is also sufficient for the required performance of the ball placing portion, the intermediate portion (displacement portion at ball hitting and tee grip portion) and the piercing portion of the present invention. Can respond.

The present invention of claim 7 is a golf tee, wherein the surface of the golf tee is surface-treated with an aqueous paint. Natural rubber usually has a candy-color like a rubber band and a black like an automobile tire, and has a monotonous appearance. According to the present invention of claim 7, the surface of the golf tee is subjected to a surface treatment with a water-based paint, so that it does not impair biodegradation, is colorful while maintaining environmental performance, and has a product addition. The value can be improved. The surface treatment includes not only single-color or multi-color coating with a water-based coating but also rough coating and textured coating.

A ball mounting portion that is formed using biodegradable rubber and has a seat surface for mounting a golf ball on the front surface side, and a rubber hardness on the back surface side of the ball mounting portion that is higher than that of the ball mounting portion. It has a large middle part and a back side of the middle part, which has a rubber hardness higher than that of the middle part and is sharpened to pierce the lower end into the ground, so it does not damage the driver head. It has excellent performance in that it can reduce the resistance at impact, improve the removal of the head, and easily insert it even on a hard tee ground. In addition, it is difficult to deform, chip, and break, so it can be used for a long time. Furthermore, since it uses biodegradable rubber, it has excellent environmental performance. In addition, an inexpensive golf tee can be provided.

In the middle part, the displacement part at the time of hitting that has a smaller cross-sectional area than the ball placing part, and on the back side of the hitting displacement part is a substantially spherical shape, and the cross-sectional area is larger than that at the hitting displacement part. In the case where the tee grip portion has a small cross-sectional area, when the tee is stabbed, the tee grip portion can be stabbed and the operability is good. On the other hand, at the time of hitting the ball, since the hitting displacement portion existing between the ball placing portion and the tee grip portion is displaced, that is, bent and bent, the resistance at impact can be reduced and the head can be removed easily.

Since a connecting portion having a rubber hardness between the respective rubber hardnesses is formed between the ball placing portion and the intermediate portion and between the intermediate portion and the piercing portion, the ball placing portion is pierced. The parts can be connected on the material side, and can be prevented from breaking at the interface of each part when they are clearly distinguished into the ball mounting part, the intermediate part, and the stab part.

Since biodegradable rubber is a mixture of natural rubber, it has the advantage that it does not disturb the natural environment even if it is left in the golf course and does not interfere with the maintenance work of grass etc. Since it is different from the industrial chemical products made from, it has excellent overall environmental performance without carbon dioxide emission in the manufacturing process. In addition, the desired hardness can be easily obtained by adjusting the amount of compounding agent added, etc., and the required performance of the ball placing part, the middle part (displacement part at the time of hitting the ball and the tee grip part), and the stab part should be sufficiently met. You can

Since the surface of the golf tee is subjected to a surface treatment with a water-based paint, it is colorful while maintaining the environmental performance without impairing biodegradation, and the added value of the product can be improved.

It is sectional drawing of the golf tee which shows the 1st Embodiment of this invention. It is sectional drawing of the golf tee which shows the 2nd Embodiment of this invention. It is a side view of the conventional golf tee (patent document 1). It is a side view of the conventional golf tee (patent document 2). It is a side view of the conventional golf tee, (a) uses a biodegradable resin composition, (b) shows the biodegradable resin composition of (a) soda lime glass short fibers. It is mixed and integrally molded (Patent Document 3).

[First Embodiment]
A golf tee according to a first embodiment of the present invention will be described with reference to FIG. As shown in FIG. 1, a golf tee 1 according to a first embodiment of the present invention includes a ball mounting portion 2 having a seat surface portion 21 for mounting a golf ball on the front surface side, and a ball mounting portion 2 The intermediate portion 4 provided on the back surface side, the stab portion body portion 61 provided on the back surface side of the intermediate portion 4 and having a substantially rod-shaped outer shape, and the stab portion having the sharpened tip portion 62 for piercing into the ground. 6 and.

The ball mounting portion 2 is located on the front surface side, and has a substantially dish-shaped seating surface portion 21 on which a golf ball is mounted, and a mounting portion main body portion having a substantially truncated cone shape whose cross-sectional area gradually increases toward the back surface. 22 and. The ball mounting portion 2 is a natural rubber mixture having a hardness of 50.

Although the substantially dish-shaped seating surface portion 21 is a portion on which the golf ball is placed, the entire seating surface portion 21 may receive the golf ball. It is desirable to receive it from the viewpoint of reducing the influence of the force transmitted to the golf ball.

On the back surface side of the ball mounting portion 2, the cross-sectional area gradually decreases from the mounting portion main body portion 22 toward the back surface, and as the distance from the mounting portion main body portion 22 decreases, the cross-section has an outwardly convex arc shape and an outer side. The first connecting portion 3 is continuously formed from the convex arc shape toward the back surface side, and the cross-sectional area is slightly smaller as it goes away from the convex arc shape outward, and has a convex arc shape inward in cross section. The rubber hardness of the first connecting portion 3 will be described later.

On the back surface side of the first connecting portion 3, there is formed an intermediate portion 4 having a substantially truncated cone shape whose cross-sectional area becomes slightly smaller as the distance from the first connecting portion 3 increases. The middle portion 4 is a natural rubber mixture having a hardness of 70. The intermediate portion 4 may have a cylindrical shape whose cross-sectional area does not change even if it is separated from the first connecting portion 3.

On the back surface side of the intermediate portion 4, a second truncated cone-shaped second connecting portion 5 is formed continuously from the intermediate portion 4 toward the back surface side, and the cross-sectional area slightly decreases as the distance from the intermediate portion 4 increases. The second connecting portion 5 may have a columnar shape whose cross-sectional area does not change even if it is separated from the intermediate portion 4. The rubber hardness of the second connecting portion 5 will be described later.

On the back surface side of the second connecting portion 5, a substantially frustoconical piercing portion main body portion 61 whose cross-sectional area becomes slightly smaller as it goes away from the second connecting portion 5, and as it goes away from the back surface side of the piercing portion main body portion 61. The piercing portion 6 is formed of a substantially conical tip portion 62 having a reduced cross-sectional area. The piercing part body 61 may have a columnar shape whose cross-sectional area does not change even if it is separated from the second connecting part 5. The piercing part 6 is a natural rubber mixture having a hardness of 90.

The golf tee 1 of the first embodiment is manufactured by using a compression molding method. The compression molding method is a molding method in which a rubber material is charged into a mold heated to an appropriate temperature, the mold is closed, pressure is applied and a suitable crosslinking time is maintained, and then the mold is opened to take out a product.

In the first embodiment, the ball mounting portion 2, the intermediate portion 4, and the insertion portion are inserted into a molding split die (not shown) in which a plurality of half-divided shapes of the golf tee 1 are formed. A flat plate of a natural rubber mixture having a hardness corresponding to the portion 6 is arranged at the positions of the ball placing portion 2, the intermediate portion 4 and the piercing portion 6, and the molding die on the opposite side having the above-mentioned shape is formed. Closed and pressed to shape. As a result, the connecting portions of the ball placing portion 2, the intermediate portion 4, and the stab portion 6, that is, the first connecting portion 3 and the second connecting portion 5, are formed by mixing materials having different hardnesses. The rubber hardness of each of the first connecting portion 3 and the second connecting portion 5 is in a state of having a rubber hardness substantially in the middle of each portion.

Since the golf tee 1 is made up of the ball mounting portion 2 (rubber hardness: 50), the intermediate portion 4 (rubber hardness: 70), and the stab portion 6 (rubber hardness: 90), it damages the driver head. In addition, the resistance at impact can be reduced, the head can be removed easily, and it is excellent in performance such as easy insertion even on a hard tee ground, and it is hard to chip and break, so it can be used for a long time. Further, since a natural rubber mixture which is a biodegradable rubber is used, it is possible to provide an inexpensive golf tee that is excellent in environmental performance.

[Second Embodiment]
A golf tee according to a second embodiment of the present invention will be described with reference to FIG. The second embodiment of the present invention is different from the first embodiment described above in that, firstly, there is a hitting ball displacement portion 41 and a tee grip portion 42 in the intermediate portion. The surface of the golf tee is treated with a water-based paint.

The ball mounting portion 2 is located on the front surface side, and has a substantially dish-shaped seating surface portion 21 on which a golf ball is mounted, and a mounting portion main body portion having a substantially truncated cone shape whose cross-sectional area gradually increases toward the back surface. 22 and. The material of the ball mounting portion 2 is a natural rubber mixture having a hardness of 50.

In addition, on the back surface side of the ball mounting portion 2, the cross-sectional area gradually decreases from the mounting portion main body portion 22 toward the back surface side, and becomes gradually smaller as the distance from the mounting portion main body portion 22 increases. And the cross-sectional area becomes slightly smaller as it goes from the outwardly convex arcuate shape toward the back surface side and away from the outwardly convex arcuate shape, and the first connecting portion 3 having the inwardly convex arcuate shape in cross section is formed. ing.

On the back surface side of the first connecting portion 3, there is formed a hitting-time displacement portion 41 that gradually decreases in size in the cross-sectional area with increasing distance from the first connecting portion 3, and then gradually increases. The material for the hitting-time displacing portion 41 is a natural rubber mixture having a hardness of 70.

A substantially spherical tee grip 42 is formed on the back surface side of the hitting displacement portion 41. The cross-sectional area of the tee grip portion 42 is larger than that of the hitting displacement portion 41 and smaller than the cross-sectional area of the tee mounting portion 2. The hitting-time displacement portion 41 and the tee grip portion 42 are smoothly connected. The material of the tee grip portion 42 is a natural rubber mixture having a hardness of 70.

In the second embodiment, the hitting-time displacement portion 41 and the tee grip portion 42 are formed to have the same hardness, but if the hardness is higher than that of the ball mounting portion 2 and is 50 or more and less than 80, they are different. May be. If different, the hitting ball displacement portion 41 may be larger than the tee grip portion 42 or the hitting ball displacement portion 41 may be smaller than the tee grip portion 42. In the case where the ball hitting displacement portion 41 and the tee grip portion 42 have different hardnesses, molding is performed by arranging flat plates of a natural rubber mixture having corresponding hardnesses at the hit ball displacing portion 41 and the tee grip portion 42, respectively. To do. In this case, between the hitting time displacement portion 41 and the tee grip portion 42, a connecting portion having rubber hardness between the two portions is formed.

On the back surface side of the tee grip portion 42, the second connecting portion 5 is formed which has a cross-sectional area that gradually decreases with distance from the tee grip portion 42 and has a convex arcuate shape inward in cross section. The tee grip portion 42 and the second connecting portion 5 are smoothly connected.

On the back surface side of the second connection portion 5, a substantially frustoconical stab portion main body portion 61 whose cross-sectional area becomes slightly smaller with distance from the second connection portion 5, and from the stab portion main portion 61 toward the back surface side, The piercing part 6 is formed of a substantially conical tip part 62 whose cross-sectional area decreases with increasing distance from the puncturing part body 61. The second connecting portion 5 and the piercing portion main body portion 61 are smoothly connected. The piercing part body 61 may have a columnar shape whose cross-sectional area does not change even if it is separated from the second connecting part 5. The material of the piercing part 6 is a natural rubber mixture having a hardness of 90.

Since the first connecting portion 3 and the second connecting portion 5 are formed by mixing materials having different hardnesses, the rubber hardness of the first connecting portion 3 and the second connecting portion 5 is approximately the middle of each part. It has a rubber hardness.

In the second embodiment, in the intermediate portion 4, on the back surface side of the ball placing portion 2, a hitting ball displacement portion 41 having a smaller cross-sectional area than the ball placing portion 2 and a lower end portion of the ball hitting displacement portion 41. Since it has a substantially spherical tee grip portion 42 connected to, the tee grip portion 42 can be held and inserted when teeing, and the operability is good. On the other hand, at the time of hitting a ball, the hitting displacement portion 41 existing between the ball placing portion 2 and the tee grip portion 42 is mainly displaced, that is, bent and bent, and the cross-sectional area of the tee grip portion 42 is equal to the ball placing portion. Since it is smaller than the cross-sectional area of 2, the resistance at impact can be reduced and the head can be removed easily.

In the second embodiment, the surface of the golf tee 1 is surface-treated with an aqueous paint. Here, the water-based paint refers to a type of paint that is diluted with water instead of thinner to dilute the paint, and includes water-based acrylic type, water-based urethane type, and water-based silicone type.

In the second embodiment, any of the above-mentioned types of water-based paints can be used, and not only single-color or multi-color coating, but also rough textured coating and leather grain coating can be applied to add value to the product. Can be improved.

The embodiment of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the object of the present invention.

For example, regarding the manufacturing method, in the embodiment of the present invention, the compression molding method is used for manufacturing. However, transfer molding or injection molding may be used to sequentially introduce raw materials having different rubber hardness from the injection port. Good.

For example, golf tees have different heights, that is, tee lengths to be used, depending on the player. In the present invention, it is possible to provide a plurality of golf tees having different tee lengths by changing the length of the stab body.

1 Golf Tee 2 Ball Placement Part 21 Seat Surface Part 22 Placement Part Main Body Part 23 Circumferential Circumference Part 3 First Connection Part 4 Intermediate Part 41 Hitting Displacement Part 42 Tee Grasping Part 5 Second Connection Part 6 Puncture Part 61 Puncture Body part 62 Tip part

Claims (7)

It’s a golf tee,
The golf tee is made of biodegradable rubber,
On the surface side of the golf tee, a ball mounting portion having a seating surface for mounting a golf ball,
An intermediate portion having a rubber hardness higher than that of the ball mounting portion on the back surface side of the ball mounting portion,
A golf tee characterized in that a back side of the intermediate portion has a rubber hardness higher than that of the intermediate portion and has a piercing portion which is sharpened for piercing the lower end portion into the ground. The rubber hardness of the biodegradable rubber forming the ball mounting portion, the intermediate portion and the stabbed portion is the ball mounting portion when measured by a durometer type A (Shore A) based on the standard JIS K6253. 2. The golf tee according to claim 1, wherein the tee is 40 or more and less than 60, the intermediate portion is 50 or more and less than 80, and the stabbed portion is 80 or more. The intermediate portion has a ball hitting displacement portion having a smaller cross-sectional area than the ball mounting portion, and a back surface side of the ball hitting displacement portion has a substantially spherical shape, and has a larger cross-sectional area than the ball hitting displacement portion. The golf tee according to claim 1, further comprising a tee grip portion having a smaller cross-sectional area than the ball mounting portion. 4. The rubber hardness of the biodegradable rubber forming the hitting displacement portion and the tee grip portion is 50 or more and less than 80 when measured by a durometer type A (Shore A) based on the standard JIS K6253. Tee for golf described in. A connecting part having a rubber hardness between the respective rubber hardnesses is formed between the ball mounting part and the intermediate part and between the intermediate part and the stab part. Item 10. The golf tee according to any one of items 4. The golf tee according to any one of claims 1 to 5, wherein the biodegradable rubber is a natural rubber mixture. The golf tee according to any one of claims 1 to 6, wherein the surface of the golf tee is surface-treated with an aqueous paint.

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