JP2009136627A - Golf tee - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf tee capable of preventing the tee from breaking or scattering by absorbing impact force when hitting a ball, and making an accurate shot by holding a ball in a stable state even when receiving an air pressure. <P>SOLUTION: A ball mounting part 3 is integrally provided on the upper end of a piercing shaft part 1 through a flexible elastic body part 2. The ball mounting part 3 includes an elastic support projection piece 3a of a triangular cross section erected at four corners of the outer peripheral surface of the upper end support base part 2a of the flexible elastic body part 2 and an auxiliary elastic support projection piece 3b of a rectangular cross section erected between the adjacent elastic support projection pieces 3a. One ridge angle part of the elastic support projection pieces 3a is directed to the center of the support base part 2a, the surface of the inner side short side of the auxiliary elastic support projection piece 3b is raised in the state of turning it to the center side of the support base part 2a to increase cross sectional secondary moment in a ball hitting direction. The ball is held in a stable state without sinking or swinging it on the upper end faces. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a golf tee used during a tee shot when playing golf.

  As a golf tee, an upper end of a piercing shaft portion is integrally provided with a ball placement portion in which an upper end surface is formed on a placement surface curved in a bowl shape that supports a golf ball (hereinafter simply referred to as a ball). Wooden or hard synthetic resin tees are widely known, but golf tees with such a structure are deformed or broken when subjected to impact force from the club head at the time of hitting, and are further repelled and reused. There are problems such as being unable to.

  Therefore, for example, as described in Patent Document 1, the piercing shaft portion and the ball mounting portion are formed separately and the lower end of the ball mounting portion is connected to the upper end of the piercing shaft portion, The ball mounting portion is formed by projecting a plurality of flexible elastic support projecting pieces having a certain height on the same circumference so as to have a flat radial pattern at equal intervals in the circumferential direction. And a golf tee configured to support the ball in a floating state by a thin tip portion of these elastic support protrusions, or a plug portion that is a piercing shaft portion as described in Patent Document 2 A ball mounting portion, which is a ball support, is connected to the upper end of the ball mounting base via a coil spring, and the upper portion of the ball mounting portion is formed to be thinner than the lower portion in the same manner as in the above-mentioned Patent Document 1. Outside in the radial direction at equal intervals and toward the top Golf tee structure obtained by forming a plurality of elastic support protrusion erected in an inclined state is developed.

JP 2004-254961 A JP 2005-296330 A

  In any of the above golf tees, the ball is supported by the upper ends of a plurality of elastic support protrusions standing at equal intervals in the circumferential direction on the same circumference. Since the frictional resistance with the support projecting piece is reduced and the impact force from the club head can be absorbed by the flexure of the elastic support projecting piece, there is no possibility that the golf tee breaks or scatters far away. In the case where the piercing shaft portion and the ball mounting portion are connected via a coil spring as in the case of the above, there is an advantage that an excellent impact force absorbing function can be exhibited by the elastic deflection of the coil spring. However, the elastic support protrusions are formed with a tapered upper end so as to be flexible and are inclined radially outwardly toward the upper end to support these elastic supports. The ball mounting part that is expanded in a trumpet shape upward is formed by the upper end of the projecting piece, so that when the ball is mounted, the ball spills or becomes unstable. Occurs.

  Specifically, when the golf tee piercing shaft is stabbed into the tee ground ground with a slight inclination, if the ball is placed on the ball mounting portion expanded in a trumpet shape, the piercing shaft portion is positioned in the tilt direction. The load of the ball acts on the upper end of the elastic support projecting piece to be larger than the other elastic support projecting pieces, and the upper end of the ball is further bent in the outer diameter direction. Not only will it need to be easily dropped from the formed ball mounting portion and again to perform tee-up preparation work by piercing the golf tee, but if it receives wind pressure in the state where the ball is mounted The ball swings with its own weight while expanding and contracting the tips of all elastic support protrusions in the radial direction, the ball mounting state becomes unstable, and accurate shots cannot be made. The problem there is.

  The present invention has been made in view of the problems as described above, and an object thereof is to quickly and surely absorb the impact force at the time of hitting the ball so that the golf tee is not broken or scattered in the distance. Of course, even if the piercing shaft part is stabbed into the ground with a slight inclination, the ball can be held in a stable mounting state, and even if it receives wind pressure, the ball vibrates or is placed on the ball. An object of the present invention is to provide a golf tee that can perform an accurate shot without falling from the mounting portion, and can be provided at a low cost with a simple structure.

  In order to achieve the above object, a golf tee according to the present invention includes, as described in claim 1, a piercing shaft portion, and a flexible elastic body portion having a lower end connected to the upper end of the piercing shaft portion, The ball mounting portion is integrally provided at the upper end of the flexible elastic body portion, and the ball mounting portion is arranged in one of the four directions on the same circumference in the outer peripheral portion of the upper surface of the flexible elastic body portion. An elastic support protrusion having a fixed height and standing in a straight shape with two ridges facing the center of the flexible elastic body, and the same length as the elastic support protrusion And is formed in a rectangular cross section, with its short side facing the central side of the flexible elastic body, straight on the same circumference between the adjacent triangular triangular elastic support protrusions 1 to 3 auxiliary elastic support protrusions standing upright, and these elastic support protrusions having a triangular cross section The upper end surface of the rectangular cross section of the auxiliary elastic supporting protrusion piece has a structure formed concave arcuate supporting curved surface for supporting the ball and.

  In the golf tee configured as described above, the invention according to claim 2 is a preferable structure of the flexible elastic body, wherein the upper end portion has an upper surface outer peripheral portion with a triangular cross section and an elastic support protrusion. A rectangular base-shaped elastic support protrusion is formed on a support base part integrally projecting upward, and a lower end part is pierced and attached to the upper end part of the shaft part. In addition, a reinforcing disk portion having the same diameter as the support base portion is arranged between the lower surface center portion of the support base portion and the upper surface center portion of the connection base portion with a small space in the vertical direction. Between the opposed surface center part of the support base part and the upper reinforcing disk part, between the opposed surface center parts of the upper and lower reinforcing disk parts, and between the opposed surface center parts of the lower reinforcing disk part and the connecting base part. Each has a structure in which they are integrally connected by a small-diameter flexible short shaft portion.

  Since the ball placement portion is provided at the upper end of the piercing shaft portion via the flexible elastic barrel portion, when the ball placed on the ball placement portion is hit by the club head, the flexible elastic barrel portion Can be elastically bent in the direction of the ball to absorb the impact force from the club head, and therefore the golf tee can be prevented from being broken or scattered. A constant height is set up in a straight state with one ridge corner facing the center of the flexible elastic body in the four directions on the same circumference of the outer periphery of the upper surface of the flexible elastic body. An elastic support protrusion having a triangular cross-section, and having the same length as the elastic support protrusion and a rectangular cross-section, with the short side facing the central side of the flexible elastic body The same circle between the elastic supporting protrusions of triangular cross-section adjacent to each other Since it consists of 1 to 3 auxiliary elastic support protrusions standing upright on the upper side, these elastic support protrusions and auxiliary elastic support protrusions in the direction of diameter expansion from the center of the upper surface of the flexible elastic body portion The cross-sectional secondary moment with the piece is large, and even if the piercing shaft portion is slightly inclined and pierced into the ground surface of the tee ground, it does not flex in the diameter-expanding direction when the ball is placed. The ball can be easily and accurately placed on the placement portion in a stable state.

  Therefore, when placing and placing the ball on the ball placement portion, there is no risk of the ball falling or swinging even when subjected to wind pressure, and a stable placement state is maintained. This enables accurate shots, and the upper end surfaces of the triangular elastic support protrusions and the rectangular auxiliary elastic support protrusions that form the ball mounting portion are formed in a concave arc shape. Since it is formed on the ball support curved surface, it is possible to maintain a more stable mounting state at an accurate position, and in addition, the entire area of the support curved surface supporting the ball can be reduced. The frictional resistance with the ball at the time of hitting can be reduced and the flight distance can be increased.

  According to the second aspect of the present invention, the flexible elastic body portion has the upper end portion on the upper surface outer peripheral portion with the triangular cross-section elastic support protrusion and the rectangular cross-section auxiliary elastic support protrusion upward. It is formed on the support base part projecting integrally toward the bottom, and the lower end part is pierced and formed on the connecting base part having a cross-sectional portal shape that is crowned on the upper end part of the shaft part. A ball mounting composed of an elastic support protrusion having a triangular cross section and an auxiliary elastic support protrusion having a rectangular cross section at the upper end by piercing the connecting base of the body portion and fitting the upper end of the shaft portion. A golf tee having a portion can be easily configured, and a golf tee having a simple structure including an elastic support protrusion provided with a ball placement portion and a piercing shaft portion can be provided at low cost.

  Further, the elastic support protrusions having a triangular cross section and the auxiliary elastic support protrusions having a rectangular cross section are integrally projected upward on the outer periphery of the upper surface, and the center of the lower surface of the support base and the connection base A reinforcing disk part having the same diameter as that of the support base part is arranged with a small space between the center part of the upper surface and the upper part of the upper surface of the support base part and the upper reinforcing disk part between the opposing surface center parts. Since the center part of the opposing surface of the disk part and the part of the opposing surface center part of the lower reinforcing disk part and the connecting base part are integrally connected by a small-diameter flexible short shaft part, the club Not only can the impact force generated when the head hits the ball be quickly and reliably absorbed by the bending of the small-diameter flexible short shaft portion in the flexible elastic body, but the small-diameter flexible short shaft portion Since it is provided on the shaft center of the piercing shaft, it accurately deflects in the direction of the ball and places the ball While reducing the frictional force between the parts can be accurate shot.

  Next, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a simplified perspective view of a golf tee, FIG. 2 is a front view thereof, FIG. 3 is a longitudinal front view, and FIG. The golf tee is integrally provided at the upper end of the piercing shaft portion 1, the flexible elastic barrel portion 2 having the lower end portion connected and fixed to the upper end of the piercing shaft portion, and the flexible elastic barrel portion 2. The piercing shaft portion 1 is made of wooden or hard synthetic resin, and the lower end portion is formed into a tapered piercing end portion 1a. The upper end of the shaft portion having a length of about 40 mm Further, the head 1b having a thickness of 6 mm and a diameter of about 12 mm is integrally formed.

  On the other hand, the flexible elastic body 2 is made of an elastic material such as rubber or synthetic resin, and the upper end of the flexible elastic body 2 is integrally provided with the ball mounting portion 3. The diameter of the disk is about 16 mm and has a constant thickness. The lower end of the circular upper wall portion 2b1 is formed in the shape of the support base portion 2a, and the lower end is opened downward toward the outer peripheral end of the circular upper wall portion 2b1 having the same diameter and the same diameter as the support base portion 2a. The short cylinder-shaped peripheral wall 2b2 is formed in a connecting base portion 2b having a gate-shaped cross section formed integrally, and the diameter of the supporting base 2a is lower than the upper surface of the connecting base 2b. The upper and lower sides are integrally connected by a flexible short shaft portion 2c having the same diameter as the portion 2a and having an appropriate thickness and having a length of about 2.5 mm and a diameter of about 4 mm between the central portions of the upper and lower opposing surfaces. The reinforcing discs 2d and 2d are interposed in series so that the lower surface central portion of the support base 2a and the upper central portion of the upper reinforcing disc portion 2d can be connected to each other. The flexible short shaft portion 2c having the same length and the same diameter as the flexible short shaft portion 2c is integrally connected, and the lower surface central portion of the lower reinforcing disc portion 2d and the upper surface central portion of the connection base portion 2b are the same. The flexible short shaft portion 2c has a structure that is integrally connected by the flexible short shaft portion 2c having the same length and the same diameter as the flexible short shaft portion 2c.

  Accordingly, the plurality of flexible shorts connecting the central portions of the support base 2a and the connecting base 2b in the flexible elastic body 2 via the upper and lower reinforcing discs 2d and 2d. The shaft portions 2c, 2c, 2c are arranged in series on the axis of the piercing shaft portion 1. Further, the connecting base portion 2b having a gate shape in section in the flexible elastic body portion 2 is pierced and fitted to the head portion 1b of the shaft portion 1, and the short cylindrical peripheral wall portion 2b2 is crimped to the outer peripheral surface of the head portion 1b. The bottom surface of the upper wall portion 2b1 is pressure-bonded to the upper end surface of the head portion 1b so that the connecting base portion 2b of the flexible elastic body portion 2 is integrally attached to the head portion of the piercing shaft portion 1. FIG. 5 is an exploded perspective view of the piercing shaft portion 1 and the flexible elastic body portion 2.

  The ball mounting part 3 integrally provided on the upper surface of the support base part 2a of the flexible elastic body part 2 is a cross section having a height of about 14 mm in the four directions on the same circumference of the outer peripheral part of the upper surface of the support base part 2a. Triangular elastic support protrusions 3a are vertically erected upward at equal intervals in the circumferential direction, and the height between the adjacent elastic support protrusions 3a, 3a is the elastic support. Two auxiliary elastic supporting protrusions 3b, 3b having a rectangular cross section having a height equal to that of the protruding piece 3a, and upward on the same circumference as the elastic supporting protruding piece 3a having a triangular section. It is a projecting project. Note that one to three auxiliary elastic support protrusions 3b may be provided between adjacent elastic support protrusions 3a and 3a having a triangular cross section.

  Further, as shown in FIG. 4, the elastic support protrusion 3 a having a triangular cross section is formed from the support base portion 2 a with one ridge corner facing the center of the support base portion 2 a of the flexible elastic body portion 2. The outer side that is erected and faces the inwardly facing ridge corner is formed on the same curved surface as the outer peripheral surface of the support base 2a, and is continuous vertically upward from the outer peripheral surface of the support base 2a. The thickness between the inner ridge corner and the outer side is formed to be about 4 mm, and the cross-section isosceles triangle has the outer side as a base.

  On the other hand, the auxiliary elastic support protrusion 3b having a rectangular cross section standing between the adjacent elastic support protrusions 3a and 3a has an elastic support having a short side width of 1.6 mm and a long side width of the above-described triangular cross section. It is formed to be about 4 mm, which is the same as the protruding piece 3a, and supports the flexible elastic body 2 with the inner short side facing the center side of the support base 2a of the flexible elastic body 2. Standing vertically upward from the outer periphery of the upper surface of the base part 2a and forming the outer short side on the same curved surface as the outer peripheral surface of the support base part 2a, vertically upward from the outer peripheral surface of the support base part 2a It is made to continue.

  In addition, the auxiliary elastic support protrusions 3b, 3b having a rectangular cross section adjacent to each other, the interval between the side surfaces of the long sides facing each other in parallel, the elastic support protrusion 3a having a triangular cross section and the elastic support protrusion 3a are adjacent to each other. The distance between the opposing side surfaces of the auxiliary elastic support protrusion 3b having a rectangular cross section is formed to be about 1.6 mm, which is equal to the short side width of the auxiliary elastic support protrusion 3b. The side surfaces of the auxiliary elastic support protrusions 3b, 3b facing the radial direction in the support base part 2a are provided so as to be parallel to each other, and therefore, the elastic support protrusions 3a having a triangular cross section are provided. The side surfaces on the long side of the auxiliary elastic support projecting pieces 3b, 3b that are erected on both sides are provided so as to be perpendicular to each other.

  In addition, the support curved surface of the ball A, which is gently curved in a concave arc shape from the outer side to the inner side at the upper end surfaces of the elastic support protrusion 3a having a triangular cross section and the auxiliary elastic support protrusion 3b having a rectangular cross section, is formed. 4 and 5, respectively, and the surface of the inner short side of all the auxiliary elastic support projecting pieces 3b is formed on the curved surface 6 concentrically with the support base 2a, and has a triangular cross-section elasticity. The inner tip ridge corner of the support protrusion 3a is located on this concentric circle.

  Since it comprised in this way, as shown in FIG. 6 in use, when the piercing end 1a of the piercing shaft portion 1 is pierced into the ground surface of the tee ground and the ball A is placed on the ball placing portion 3. A plurality of triangular elastic support protrusions 3a and a cross-section projecting straight upward from the outer peripheral portion of the upper surface of the support base 2a of the flexible elastic body 2 and constituting the ball mounting portion 3 In the auxiliary elastic support protrusion 3b having a rectangular shape, the elastic support protrusion 3a is erected with its ridge corner directed to the center of the support base 2a of the flexible elastic body 2, and the auxiliary elastic support Since the projecting piece 3b is erected with the surface on the short side facing the center side of the flexible elastic body, the support base of the elastic supporting projecting piece 3a and the auxiliary elastic supporting projecting piece 3b. The cross-sectional secondary moment with respect to the direction of diameter expansion from the center side of the portion 2a is increased, These elastic support projecting pieces 3a and 3b are not bent outward (in the diameter expansion direction) due to the load of the ball A, and the ball A is held in a straight posture without swinging even when subjected to wind pressure. Without being submerged, it can be placed in a predetermined position in a stable state.

  Next, when the ball A is hit by the club head on the ball mounting portion 3, the elastic support protrusion 3a and the auxiliary elastic support protrusion 3b are elastically bent in the hitting direction by the impact at the time of hitting and are flexible and elastic. The flexible short shaft portion 2c of the trunk portion 2 is elastically bent in the direction of the hitting ball with the head 1b of the piercing shaft portion 1 as a fulcrum to absorb the impact force from the club head, and the piercing shaft portion 1 is grounded by the impact force. Prevent exiting from. After the ball is hit, the flexible elastic body 2 and the elastic support protrusions 3a and 3b are restored to their original shapes. In addition, although the reinforcing disc portions 2d and 2d are provided between the flexible short shaft portions 2c and 2c adjacent to each other as the flexible elastic barrel portion 2, the reinforcing disc portions 2d and 2d are not necessarily provided. Instead, it may be formed by a single flexible shaft longer than the flexible short shaft 2c.

The perspective view which shows one Embodiment of this invention golf tee. The front view. FIG. , Plan view. FIG. The front view which shows a use condition.

Explanation of symbols

1 piercing shaft 2 flexible elastic body
2a Support base
2b Connecting base
2c Flexible short shaft part 3 Ball mounting part
3a Elastic support protrusion with triangular cross section
3b Auxiliary elastic support protrusion with rectangular cross section

Claims (2)

  A piercing shaft portion, a flexible elastic barrel portion having a lower end connected to the upper end of the piercing shaft portion, and a ball mounting portion integrally provided at the upper end of the flexible elastic barrel portion. The ball mounting portion is erected in a straight shape in a state where one ridge corner portion is directed to the center of the flexible elastic body portion in four directions on the same circumference of the upper surface outer peripheral portion of the flexible elastic body portion. An elastic support protrusion having a certain height and a triangular cross section, and having the same length as the elastic support protrusion and a rectangular cross section. 1 to 3 auxiliary elastic support protrusions erected in a straight line on the same circumference between the elastic support protrusions having a triangular cross section adjacent to each other in the state toward the center of Concave circle that supports the golf ball on the upper end surface of the elastic support protrusion having a shape and the auxiliary elastic support protrusion having a rectangular cross section Golf tee, characterized in that formed on Jo support surface.   The flexible elastic body has a support base portion in which an upper end portion is provided with an elastic support protrusion having a triangular cross section and an auxiliary elastic support protrusion having a rectangular cross section on the outer peripheral portion of the upper surface integrally projecting upward. Are formed in a connecting base portion having a cross-sectional gate shape that is pierced at the lower end portion and crowned on the upper end portion of the shaft portion, and the lower surface center portion of these support base portions and the upper surface center portion of the connecting base portion, A reinforcing disk part having the same diameter as the support base part is arranged with a small space between the upper and lower sides of the support base part and the upper reinforcing disk part between the center portions of the opposing surfaces and the upper and lower reinforcing disk parts. The center portions of the opposing surfaces and the center portions of the opposing surfaces of the lower reinforcing disk portion and the connecting base portion are integrally connected by a small-diameter flexible short shaft portion, respectively. 1. Golf tee according to 1.

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