KR20230092567A - Tee for golf - Google Patents

Abstract

The present invention uses one golf tee to perform the functions of a long tee and a short tee, enabling correct aiming in the tee shot preparation process, enabling use as a ball marker on the green, and being used as a tool for swing practice indoors. as made possible;
A tea body composed of a plate-shaped body so that it can maintain a stable posture by being in close contact with the ground in the tee box;
a short tee integrally provided with the tee body to place a ball so that a tee shot is possible with a wood, utility or iron club;
It is characterized in that it includes a long tee that is coupled to the tee body and is upright to allow a tee shot with a driver club to place a ball and tilt in a hitting direction by a tee shot.

Description

Tee for golf {TEE FOR GOLF}

The present invention relates to a tee for golf, and more specifically, functions as a ball marker on the green as well as the function of a short tee and a long tee for placing a ball for a tee shot, and practicing swing indoors and outdoors while excluding the fear of loss after teeing. It relates to the provision of an improved golf tee to help with aiming and lie judgment while enabling.

In golf, a tee shot is performed using a driver at the tee box, and then the second and third shots or approaches are performed using woods, irons, utility clubs, and wedge clubs to land the ball on the green, and then a putter is used to play the green. It is a sport in which one hole is finished by putting it into a hole formed in the game, and the more scores that are lower than the prescribed number of strokes, the more advantageous it is to go through 18 holes.

As described above, in order to hit a tee shot using a driver or iron at the tee box, the tee is put in the tee box, the ball is placed on the tee, and the ball is hit. During the hitting process, the tee flies along with the ball at a certain distance, so there is concern about loss. It is true that there are many

In this way, a variety of golf tees have been developed and used to eliminate the fear of loss by improving the tee that allows the ball to be stably placed during the tee shot process, and representative examples are as follows through patent documents.

Patent Document 1 has a head portion 2 having an arc-shaped ball seating surface 3 that allows the ball B to be placed on the upper portion of the body portion 1 and a tee at the lower portion of the body portion 1 In the long tee (T1) and short tee (T2) having a tee inserting portion (4) into which a can be inserted;

constructing a double tee (DT) so that the long tee (T1) and the short tee (T2) are integral;

The double tee (DT) is characterized in that the center lines (A) and (B) of the body parts (1) of the long tee (T1) and the short tee (T2) cross each other vertically and horizontally at an angle of 90 degrees.

Patent Document 2 includes an upper body 10 having a ball support 11 for placing a golf ball 40 on the upper end and an upper body 10 having a coupling part 15 on the lower end,

A lower body 20 having a seating portion 22 at the upper end and a wedge-shaped fixing portion 21 that can be inserted and fixed to the ground at the lower end;

A laser beam generator 30 installed inside the lower body 20 and projecting a laser beam directly upward;

The laser beam projected from the laser beam generator 30 passes through the vertical guideway 12 inside the upper body 10 and is projected from the through hole 14 formed on the wall surface at a downward inclination angle to the ground in front. characterized by one.

Patent Registration No. 10 - 0657985 - 0000 Patent Registration No. 10 - 1029706 - 0000

doesn't exist.

Among the prior arts, in the case of Patent Document 1, the long tee and the short tee are integrally configured so that the long tee and the short tee can be selected and used while changing the direction at 90 degrees, and in the case of Patent Document 2, the laser beam is projected In addition to aiming in the direction in which the ball flies during the tee shot process, it helps golfers to maintain a stable and correct address posture.

In the case of Patent Document 1 of the prior art as described above, since the size of the tee is configured in a + shape outside the common 1 shape, it is bulky and difficult to carry and store, especially when storing the tee in a pocket In the process of moving or in the process of taking the second and third shots, it becomes a factor that interferes with the swing, such as stabbing the body by a sharp part, so that a stable and consistent swing becomes difficult, which adversely affects score management.

Since the volume increases in this way, having a straight short tee and a long tee together has a disadvantage in that it is more convenient for users to carry and use and does not interfere with the swing.

In the case of Patent Document 2, since the structure of the golf tee is complicated, it is difficult to make it, as well as the cost of the tee is expensive compared to the function due to the subsequent increase in production cost, so all users cannot easily access it. A problem arises.

In addition, when performing a tee shot by placing a ball after inserting a tee into the tee box, the upper body coupled to the upper part of the lower body inserted into the tee box is separated from the lower body by the blow of the head of the driver or iron and is scattered. becomes a form

In this case, like a conventional tee, it flies tens of centimeters or several meters short from the tee box, and when the upper body flies in this way enters the grass or landscaping area, it is often lost because it is not easily found. it happens

In the case of a general tee, an extra tee is carried around, but in the case of an expensive tee with some function, users often do not have an extra tee, especially in case the upper body is scattered and lost, the lower body or Since it becomes impossible to use it, it can be seen that the effectiveness of the tee is not very high.

In order to solve this problem, it is inconvenient to connect the upper body and the lower body with a wire for preventing separation, and even aside from this problem, various problems are occurring, such as not being free from the inconvenience and problems of having to carry the short tee separately. am.

Accordingly, the present invention has been invented to solve the above problems, and a tee body 110 configured of a plate body so that the tee box 101 is in close contact with the ground 102 to maintain a stable posture;

a short tee 120 integrally provided with the tee body 110 to place the ball 105 so that a tee shot is possible with a wood, utility or iron club;

Including a long tee 130 that is coupled to the tee body 110 and is erected to allow a tee shot with a driver club to set the ball 105 and tilt in the hitting direction by the tee shot;

It enables correct aiming in the tee shot preparation process while performing the functions of long and short tees using one golf tee, and can be used as a ball marker on the green and used as a tool for swing practice indoors. purpose can be achieved

The present invention has an effect of actively responding to the user's (golfer's) physical condition and swing posture by enabling the length adjustment in the case of a long tee while performing the functions of a short tee and a long tee using one tee.

The present invention has the effect of preventing damage such as loss or breakage due to scattering of the tee by placing the ball on the tee to hit the ball during swing and at the same time tilting the stem of the tee forward by the rotation of the head. .

The present invention configures the shape of the body of the tee in various ways to add design elements, as well as fold the stem to use it as a ball marker on the green, so that one tee can be carried so that long tees, short tees and ball markers do not have to be carried at the same time, and the carrying process has the effect of preventing unsafe swings caused by interference in

Since the present invention maintains the tee in the form of placing it in the tee box, the mat or grass of the tee box can be protected, the tee can be easily used even during freezing in winter, and the tee can be used indoors without placing the ball on the stem. It has various effects such as being able to be used for swing practice while standing upright.

1 is a perspective view of an exploded state showing an example of a golf tee to which the technology of the present invention is applied.
Figure 2 is a perspective view of a state shown by combining a golf tee to which the technology of the present invention is applied.
Figure 3 is a configuration diagram of a cross-sectional state showing a golf tee to which the technology of the present invention is applied.
Figure 4 is a perspective view showing an example of a short tee applied to a golf tee to which the present invention technology is applied.
Figure 5 is a perspective view showing another example of a short tee applied to a golf tee to which the present invention technology is applied.
Figure 6 is an exploded perspective view showing an example of a length adjusting means of a long tee constituting a golf tee to which the technology of the present invention is applied.
Figure 7 is an exploded perspective view of another example showing a length adjusting means of a long tee constituting a golf tee to which the technology of the present invention is applied.
Figure 8 is a cross-sectional configuration showing a length adjusting means of a long tee constituting the golf tee shown in Figure 7;
Figure 9 is a perspective view of the front state showing another example of a golf tee to which the technology of the present invention is applied.
Figure 10 is a perspective view of the rear state showing another example of a golf tee to which the technology of the present invention is applied.
11 is a perspective view of a state in which the golf tee applied to FIGS. 9 and 10 is coupled to a golf club and carried.
Figure 12 is a rear perspective view showing another example of a golf tee to which the technology of the present invention is applied.
Figure 13 is a planar cross-sectional configuration showing another example of a golf tee to which the technology of the present invention is applied.
14 is an exemplary view showing a driver tee shot state of a golf tee to which the technology of the present invention is applied.

Hereinafter, a preferred configuration and operation of the present invention for achieving the above object will be described with reference to the accompanying drawings.

1 is a perspective view of an exploded state showing an example of a golf tee to which the technology of the present invention is applied, FIG. 2 is a perspective view of a golf tee to which the technology of the present invention is applied, and FIG. Figure 4 is a perspective view showing an example of a short tee applied to a golf tee to which the technology of the present invention is applied, Figure 5 is a configuration diagram of a golf tee to which the technology of the present invention is applied A perspective view showing another example of a short tee, Figure 6 is an exploded perspective view of an example showing a length adjusting means of a long tee constituting a golf tee to which the technology of the present invention is applied, Figure 7 is a golf tee to which the technology of the present invention is applied An exploded perspective view of another example showing the length adjusting means of the long tee, Figure 8 is a cross-sectional view showing the length adjusting means of the long tee constituting the golf tee shown in Figure 7, Figure 14 is the technology of the present invention is applied A driver tee shot state of a golf tee will be described together with an exemplary diagram showing the state.

The golf tee 100 to which the technology of the present invention is applied is a plate-shaped body and made of rubber, plastic, silicone, or urethane so that the tee box 101 can adhere to the ground 102 (mat or grass) and maintain a stable posture. A tee body 110 made of a material, and a long tee 130 that is coupled to the tee body 110, places the ball 105, and tilts in the hitting direction by the club head by the swing motion of the user (golfer). make up

In the drawings of the present invention, the shape of the tea body 110 is shown in a rectangular shape, but it can be made to have various shapes and shapes such as circular, polygonal, or character, so it is not limited to the shape illustrated in the drawing.

An operation hole 111 is formed at the center of the tee body 110 so that the long tee 130 can be coupled in the forward direction (tee shot direction), and the rear side of the operation hole 111 is the tee body 110 It is located at the position to have a closed portion 112 and the front side forms an open portion 113 so that the combined long tee 130 tilts forward or does not interfere with folding the long tee 130 when not in use.

A guide rim 115 protrudes downward along the entire circumference of the edge of the tee body 110, and a mounting rim 116 to facilitate coupling of the long tee 130 to the lower side of the operation hole 111 extrude

It is preferable to have the same protruding height of the guide rim 115 and the mounting rim 116 or to form a low height of the mounting rim 116, and the long tee 130 in a folded state so as not to be exposed when the combined long tee 130 is folded. ), it would be desirable to have a height higher than the diameter of

Mounting holes 118 are formed on both sides of the closing part 112 of the mounting rim 116, and the lower end of the long tee 130 is coupled with a fixing means 119 such as a pin or screw to the tee body 110. It enables conversion operation to an upright or horizontal state (folded state).

A short tee 120 for wood shot or iron shot is integrally formed at the position of the closing part 112 of the tea body 110, and the short tee 120 is a long tee 130 at the position of the closing part 112 It is configured by forming a plurality of ball set protrusions 121 so as to secure stability when the ball 105 is placed while not interfering with the upright and folding operation of the.

As another example, it is okay to integrally protrude the short rim body 123 formed with the seating groove 122 so that the ball 105 can be placed above the tea body 110 at the position of the closing part 112. .

The space between the guide rims 115 formed in the tee body 110 is filled with the same material to increase the sense of weight or a weight such as a metal jaedil is built in to hit the golf tee 100 during the tee shot process. Even at this time, it may be prevented from flying away to eliminate the fear of loss, and it will be okay to further devise a loss prevention means connected by a rope.

The long tee 130 has a long tee 131 with a predetermined length (the length of a long tee used for a general driver tee shot) in the form of a cylindrical or polygonal tube body, and a ball ( 105) is integrally formed with a ball cup 132 having a cup-like shape so as to be placed and maintained.

The long tee 130 may be configured as a single body having a predetermined length, or as another example, may further have a length adjusting means 135 so that the length can be varied and used according to the user's physical condition or play tendency.

The length adjusting means 135 has a lower stem 136 coupled to the tee body 110 when the long tee 130 is upright, and a ball cup 132 at the top, and coupled to the upper part of the lower stem 136 It is composed of an upper system 137 to be.

A female screw 138 and a male screw 139 are formed on the inner diameter and outer diameter of the lower and upper stems 136 and 137 so that the height of the upper stem 137 can be adjusted with respect to the lower stem 136 by screwing can also

As another example, an elastic adjusting piece 139 is formed on one side of the lower stem 136 by a slot 138 formed at a predetermined interval, and an adjusting protrusion is formed on the inner surface of the elastic adjusting piece 139. 140 is formed so that the adjustment groove 141 formed in multiple stages on the outer surface of the upper stem 137 is hooked and fixed so that the height can be adjusted.

9 is a perspective view of a front state showing another example of a golf tee to which the technology of the present invention is applied, FIG. 10 is a perspective view of a rear state showing another example of a golf tee to which the technology of the present invention is applied, and FIG. As a perspective view of a state in which the golf tee applied to FIGS. 9 and 10 is coupled to a golf club and carried, another example of a golf tee 100 to which the technology of the present invention is applied will be described.

Concave-convex spikes 145 having various shapes are integrally placed on the bottom of the tee body 110, in which the long tee 130 is folded forward and coupled to the operation hole 111 to be upright, so that it can be stably maintained without flow in the tee box. Further formed, and on the upper surface of the mounting rim 116 formed on the tea body 110, a concave-convex lye line 146 is further formed in the front and rear directions to check the lie at the green or tee box and aiming Check the line and putting line.

At the rear of the long tee 130, the tee body 110 is integrally extended to the rear to form a short tee blade 147, and above it, a seating groove 122 in which a ball 105 can be placed is installed on the mounting rim 116 ) so that it can be used as a short tee (120).

In the middle of the operation hole 111, a shaft groove 150 is formed to be concave so that it can be combined with the shaft 148 of the golf club and carried, and the surface of the shaft groove 150 is formed with rubber, silicon and A flow prevention member 151 of the same material may be inserted to maintain a stable coupling state.

12 is a rear perspective view showing another example of a golf tee to which the technology of the present invention is applied, and FIG. 13 is a planar cross-sectional view showing another example of a golf tee to which the technology of the present invention is applied. Another example of the golf tee 100 to which this is applied will be described.

A hook hole 160 is formed on one side of the tee body 110, and a short tee or a connecting rope 162 bound with the anchor 161 is connected to the hook hole 160, so that when using the golf tee 100, the short tee Alternatively, the anchor 161 may be anchored to the ground to prevent the golf tee 100 from scattering when performing a tee shot.

The fixing means 119 for coupling the long tee 130 to the tee body 110 maintains the long tee 130 always upright with respect to the tee body 110 via the torsional spring 165 to make a tee shot. In the preparation process for this, an additional operation for erecting the stored long tee 130 may be excluded.

The fixing means 119 can be composed of pins or bolts, and is preferably made of stainless steel so that there is no problem with operation by excluding the concern of corrosion even if moisture is introduced due to rain or snowfall in the process of using it in the field. It would be preferable to

In addition, when carrying or storing the golf tee 100, the long tee 130 standing upright prevents interference from occurring, so that the stem of the long tee 130 and the operating hole 111 are locked to each other. 166 and the protruding groove 167 may be formed.

Looking at the state of use of the golf tee 100 to which the technology of the present invention is applied as described above is as follows.

If you want to carry or store the golf tee 100, fold the long tee 130 with respect to the tee body 110 so that it matches the operation hole 111 so that it does not protrude and maintains a flat plate shape, so you can put it in your pocket or bag. It does not occupy a large volume to be stored, stored, and carried, and interference with other items is excluded.

In addition, during rounding, the shaft groove 150 further formed in the operation hole 111 and the shaft 148 of a golf club stored in a bag or carried by a user may be combined and used, and the elasticity of the operation hole 111 By this, it is possible to easily enter and exit the shaft 148, and the shaft groove 150 becomes a shape that surrounds the shaft 148 and is eliminated by the anti-flow member 151 further inserted into the shaft groove 150. this can be ruled out.

In the case of using the golf tee 100, after entering the tee box 101, it is determined whether to use the long tee 130 or the short tee 120 according to the type of hole, and then the tee box 101 for golf After positioning the tee 100, place the ball 105 thereon, and perform a swing.

For example, in the case of a par five or par four hole, a driver tee shot must be made from the tee box 101, so a long tee 130 must be used, and in the case of a par three, an iron tee shot must be made, so a short tee 120 is used, Even in the case of a par five or par four hole, there are cases in which a wood, utility, or alien tee shot is performed according to the user's judgment, so in this case, the tee shot is performed using the short tee 120.

In the case of a tee shot with the long tee 130, the long tee 130, which is coupled to the operation hole 111 formed in the tee body 110 and folded parallel to the operation hole 111, is inserted into the operation hole 111. Place the tea body 110 on the mat or grass in the tee box 101 in a state of standing upright to the direction.

In this process, the ball 105 is hit by using the both sides of the tee body 110, the operation hole 111 or the long tee 130, or through the lyline 146 further formed on the upper surface of the mounting rim 116. After aiming in the direction to be sent, the ball 105 is placed in the ball cup 132 provided at the top of the long tee 131 constituting the upright long tee 130.

In this state, the user grabs the club to swing, takes the address according to the aiming state set by the golf tee 100, and then performs a swing to hit the ball 105 and send it to the target position of the fairway. do.

At this time, when only the ball 105 is accurately hit using the club head, the long tee 131 of the long tee 130 remains upright, and the long tee 131 together with the ball 105 hits In this case, the long stem 131 takes the form of falling in the direction of the operation hole 111, so that the golf tee 100 is scattered far away because the impact or striking force is not transmitted to the entire golf tee 100. it will be prevented

Of course, depending on the user's body shape or swing state, there is a case where the long tee 130 is swinging in a state where the height of the long tee 130 is higher or lower than the standard state. You can perform a swing by adjusting the height to suit the user.

The operation of the height adjusting means 135 accommodates and withdraws the upper stem 137 coupled to the lower stem 136 coupled to the operating hole 111 in the upper and lower directions of the lower stem 136 to obtain a desired height. After setting the ball 105 in the ball cup 132, it is sufficient to swing.

The reason why the upper stem 137 can be accommodated and withdrawn relative to the lower stem 136 is that the lower and upper stems 136 and 137 are screwed together, so it is possible to adjust the height by forward and reverse rotation. As another example, When the upper stem 137 is raised or lowered with respect to the lower stem 136, the adjusting protrusion 140 formed on the elastic adjusting piece 139 of the lower stem 136 is formed on the upper stem 137. ) is fixed so that it is possible to maintain the adjusted height.

In addition, the elastic control piece 139 can act elastically with respect to the up and down movement of the upper stem 137 by the slot 138 formed at a predetermined interval in the lower stem 136. Since 139 has elasticity, it is possible to move in the direction opposite to the center of the shaft with respect to the center of the shaft of the lower stem 136.

When using the short tee 120, rotate the long tee 130 forward with respect to the tee body 110 and fold it to coincide with the operation hole 111, and then move the tee body 110 to the tee box 101. Place it on a mat or grass.

In this process, the ball 105 is hit by using the lye line 146 further formed on both sides of the tea body 110 or on the upper surface of the operation hole 111 or the mounting rim 116 to send it in the desired direction. After ming, the ball 105 is placed in the short tee 120 formed at or behind the closed part 112 of the operation hole 111 provided in the tea body 110.

In this state, the user grabs the corresponding club, takes an address according to the aiming state set by the golf tee 100, and then performs a swing to strike the ball 105 and send it flying to the target position of the fairway.

In the case of the short tee 120, the short tee rim body 123 protruding upward from the plurality of ball set protrusions 121 or the tee body 110, the mounting rim 116, and the set groove formed on the short tee blade 147 ( 122) to keep the ball 105 stable, and since the height of the tea body 110 is only a few millimeters, it is possible to maintain a height equal to the height of the short tee used in the field It will be.

The golf tee 100 of the present invention as described above does not need to be plugged into the ground and maintained, so it can protect the grass during the tee shot process and does not interfere with use on the mat. (100) can be kept stable, helping the tee shot.

In addition, the operation hole 112 formed on both sides or the center of the tee body 110 and the long system 131 of the long tee 130 coupled to the operation hole 112 and the upper surface of the mounting rim 116 are further formed. Since it is possible to aim at the target point through the lie line 146, the ball can be hit in the right direction, and it is possible to check the tee shot lie and putt lie on the tee box and green, so the ball 105 moves to the target position. It becomes possible to send

In the case of the long tee 130, it can respond to the user's physical condition as well as the type of club to be used through height adjustment, so there is no inconvenience of having to have several long tees and short tees, and when teeing with the long tee 130, the head Even if there is a blow, the long tee 130 goes forward (falling down) in the forward (strike direction), so the golf tee 100 is prevented from being scattered and lost.

After completing the tee shot and putting the ball 105 on the green through the second and third shots and approaches, it is a marker to identify the position of the ball 105 placed on the green before putting the ball 105 into the hole cup. Since it can be used, it is possible to combine several functions with only one golf tee 100 without the need to have unnecessarily many preparations for a round of golf.

In a state where the golf tee 100 of the present invention is provided indoors, the long tee 130 can be erected to practice swing using a golf club such as a driver. In this case, the long tee 130 is placed on the head face of the driver. Even if it is hit, it enables correct and stable swing practice because it swings while visually observing the sound and long tee that occur at the time of hitting without damage to the tee or club.

100; tee for golf
105; cheek
110; tea body
111; operation hall
112; closure
113; opening
116; mounting rim
120; short tea
130; long tea
131; long stem
132; ball cup
135; length adjusting device
136; lower stem
137; upper system

Claims (5)

a tee body 110 composed of a plate-shaped body so that the tee box 101 can be in close contact with the ground 102 and maintain a stable posture; A short tee 120 integrally provided with the tee body 110 and holding a ball 105 so that a tee shot can be made with a wood, utility or iron club; In a golf tee including a long tee 130 that is placed on the ball 105 and tilted in a hitting direction by a tee shot;
The tee body 110 includes an operation hole 111 formed to couple the long tee 130 in the forward direction from the center position; The rear side of the operating hole 111 is formed with the closing part 112 located on the tee body 110, and the front side is formed so that the long tee 130 does not interfere with tilting forward or folding the long tee 130 when not in use. It includes an opening 113 to;
a guide rim 115 protruding downward around the entire circumference of the tea body 110; A mounting rim 116 protruding downward from the operation hole 111 so that the long tee 130 can be coupled thereto;
It is formed on both sides of the closing part 112 of the mounting rim 116 to combine the lower end of the long tee 130 with the fixing means 119 to enable a switching operation in an upright or horizontal state with respect to the tee body 110 including a mounting hole 118;
The short tee 120 is formed to secure stability when the ball 105 is placed while not interfering with the erection and folding operation of the long tee 130 at the position of the closing part 112. A plurality of ball seat protrusions formed (121) or; It includes a short rim body 123 integrally protruding by forming a seating groove 122 so that the ball 105 can be placed above the tea body 110 at the position of the closing part 112; For golf, characterized in that it includes a seating groove 122 formed so that the ball 105 can be placed in the short tee blade 147 integrally formed at the rear of the mounting rim 116 and the rear of the tee body 110 tea. According to claim 1;
The tong tee 130 includes a long tee stem 131 having a predetermined length;
It includes a ball cup 132 that can place and hold the ball 105 on the upper part of the long stem 131;
The long tee 130 is a golf tee, characterized in that it further comprises a length adjusting means 135 to be used while varying the length to suit the user's physical condition or play tendency. According to claim 1;
a hook hole 160 formed on one side of the tea body 110;
A connection rope 162 connected to the hanging hole 160 and bound to a short tee or anchor 161 blocked on the ground of the tee box to prevent the golf tee 100 from scattering during a tee shot process;
A torsional spring 165 interposed between the fixing means 119 for coupling the long tee 130 to the tee body 110 so that the long tee 130 always maintains an upright state with respect to the tee body 110, and ;
In order to prevent interference caused by the upright long tee 130 during storage, a locking protrusion 166 and a protrusion groove 167 are formed to be hooked and fixed to the stem of the long tee 130 and the operating hole 111. A tee for golf, characterized in that for doing. According to claim 1;
On the upper surface of the mounting rim 116 forming the operation hole 111, a lyline 146 formed in the front and rear directions to enable aiming and ly check;
A golf tee, characterized in that it further comprises a shaft groove 150 formed in the operation hole 111 to maintain the tee body 110 by combining with the shaft 148 of the golf club. According to claim 2;
The length adjusting means 135 includes a lower stem 136 coupled to the tee body 110 when the long tee 130 is erected; an upper stem 137 having a ball cup 132 at an upper end and coupled to an upper portion of the lower stem 136; A female screw 138 and a male screw 139 are formed on the inner diameter and outer diameter of the lower and upper stems 136 and 137 to adjust the height of the upper stem 137 with respect to the lower stem 136 by screwing;
An elastic adjustment piece 139 is formed by a slot 138 formed at one side of the lower stem 136 at a predetermined interval;
Golf tee, characterized in that the adjusting protrusion 140 is formed on the inner surface of the elastic adjusting piece 139 so that the adjusting groove 141 formed in multiple stages on the outer surface of the upper stem 137 is hooked and fixed.

Images