CN113646056A

CN113646056A - Golf putting practice machine and auxiliary assembly unit of putting head

Info

Publication number: CN113646056A
Application number: CN202080027168.5A
Authority: CN
Inventors: 罗钟甲
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-05-09
Filing date: 2020-04-13
Publication date: 2021-11-12
Anticipated expiration: 2040-04-13
Also published as: CN113646056B; JP7162938B2; JP2022528952A; KR102015253B1; WO2020226291A1

Abstract

The present invention relates to a putting practice machine for skillfully grasping a putting action for hitting a golf ball to accurately reach a target place, and relates to a putting practice machine which can be used regardless of a trajectory and a curvature formed by a putter head when hitting a golf ball. Also, the present invention further includes an assembly assisting unit for assembling the putter head to the mounting part.

Description

Golf putting practice machine and auxiliary assembly unit of putting head

This application claims priority based on korean patent application No. 10-2019-0053418 (title of the invention: golf putter practice machine and putter head assembly assisting unit, application No. 5/8/2019), the specification and drawings of which are incorporated herein by reference in their entirety.

Technical Field

The present invention relates to a golf putting training machine, and more particularly, to a golf putting training machine which is installed such that a target point to be hit and delivered to a golf ball is located on a vertical surface of a hitting surface when performing a putting game in which the golf ball is hit with the hitting surface of a putter head and delivered to the target point, and which can repeatedly practice a hitting motion while maintaining the set angle of the hitting surface before, during, and after the hitting, thereby enabling a user to master an accurate hitting motion with skill.

In addition, the present invention includes an assembly aid unit for assembling the putter head to the mounting portion of the golf putting training machine.

Background

Putting refers to a stroke of putting a golf ball on a green into a hole using a putter. It is important when putting that the putter head is rotated parallel to the line connecting the target point and the golf ball. Also, a number of devices for practicing such putters have been disclosed.

Fig. 1 is a perspective view showing an example of a putting training machine.

As shown, the putting trainer 100 includes two parallel lines 110 and a mounting portion 130 movable along the parallel lines 110. When a golf ball is hit with a putter head (not shown) coupled to the mounting portion 130, the mounting portion 130 moves along the parallel line 110, and thus, a practice of swinging the putter head in a target direction along the parallel line 110 can be performed.

However, the trajectory formed by the putter head during putting varies depending on the height, arm length, striking motion, etc. of the batter, and since the trajectory of the parallel lines 110 is fixed, the mounting portion 130 of the putting training machine 100 may be spaced apart from the parallel lines 110 before and after striking, and thus there is a problem that sufficient training cannot be performed.

In addition, since the putter head of the putting training machine 100 is mounted on the shaft connecting the two wheels, it is positioned higher than the putter head at the actual place, and thus there is a problem in that it is possible to hit a golf ball under different conditions from the actual conditions.

Disclosure of Invention

Technical problem

The invention aims to provide a golf putting practice machine which can continuously and repeatedly practice the swinging motion of hitting a golf ball with a putter head while continuously keeping the state that the target point of the golf ball to be hit and delivered is positioned on the vertical surface of the hitting surface of the putter head before, during and after the hitting when the practice of putting the putting swing of hitting the golf ball with the putter head to the target point is carried out.

Another object of the present invention is to provide a golf putting training machine in which the putter head is kept in close contact with the mounting portion and the parallel line before, during and after striking.

It is a further object of the present invention to provide a golf putting training machine which performs the striking at the same height of the putter head as the actual field.

It is a further object of the present invention to provide an assembly aid unit for assembling a putter head to a mounting portion of a golf putting training machine in order to enable putting practice with a general putter head as well.

Technical scheme

In order to achieve the above object, the golf putting training machine of the present invention comprises: a base 1; a rotating body 2 provided on the base 1 to be rotatable about a rotating shaft 32, having a circumferential shape, and having parallel lines 18; an elastic member 20 provided on one side or both sides of the rotating body 2 around a rotating shaft 32 provided at the center of the rotating body 2 to apply an elastic force so that both sides of the rotating body 2 are rotated alternately up and down; and a mounting portion 4 movable along a parallel line. The putter head is detachably provided to the mounting portion 4.

The mounting portion 4 moves along the parallel line 18 in accordance with the movement of the putter head at the time of putting, and the rotating body 2 alternately rotates up and down around the rotating shaft 32 in both sides of the rotating body 2 against the elastic force of the elastic member 20 along the track (preferably, a circumferential track) formed by the putter head, and the mounting portion 4 and the parallel line 18 can be kept in a close state and the mounting portion 4 and the putter head can be kept in a close state, so that the putter head can be moved along the parallel line 18 even if the height, the arm length, the hitting motion, and the like of each of the hitters are different.

Preferably, the elastic member 20 is provided between the base 1 and the rotating body 2. The elastic members 20 may be provided on both sides of the rotating body 2 centering on the rotating shaft 32, and both sides of the rotating body 2 are still subjected to elastic force urging the rotation to the upper side in a state where the mounting portion 4 is located at the center of the rotating body 2. Alternatively, the elastic member 20 may be provided only on one side of the rotating body 2 around the rotating shaft 32, in which case both sides of the rotating body 2 are maintained in a parallel state at the same height in a state where the mounting portion 4 is located at the center of the rotating body 2, in a case where the mounting portion 4 is moved to the side of the rotating body 2 where the elastic member 20 is provided, the side of the rotating body 2 where the elastic member 20 is provided is subjected to an elastic force urging the rotation to the upper side, and in a case where the mounting portion 4 is moved to the opposite side thereof, the side of the rotating body 2 where the elastic member 20 is provided is subjected to an elastic force urging the rotation to the lower side.

Two parallel lines 18 may be formed in parallel along the length direction of the rotating body 2. And may comprise a mounting 4, two wheels 3 arranged to be able to move along two parallel lines; a connecting member 50 connecting the two wheels; and

protrusions

5, 25 protruded from the connection member 50 and inserted into the fitting grooves 22, 23 of the putter head.

The connecting member 50 may include both side end portions 16 fitted with wheels; and a central portion 52 connecting the two side end portions 16 and formed with the

projections

5, 25.

The central portion 52 is formed at a lower height than the side end portions 16 and has a width at least greater than that of the putter head so that the putter head can hit a golf ball at a low height.

The

assembly assisting unit

41, 42, 43, 44 of the present invention may include a body formed with

grooves

37, 45, 46, 47; and the assembling mechanism is used for assembling the push rod head on the body. The

projections

5, 25 of the mounting portion are removably inserted into the slots.

The body may be formed in a plate shape for covering one side of the head face of the push rod.

And, the assembling mechanism may include hooks 38 provided at both sides of the body; and

elastic ropes

36 and 39 which are arranged on the hook 38 and are used for combining the push rod head and the body.

Technical effects

The present invention has the following effects.

First, the swing motion of hitting a golf ball with a putter head can be continuously and repeatedly performed while maintaining a state in which a target point to be hit and delivered to the golf ball is located on a vertical surface of a hitting surface of the putter head before, during, and after the hitting.

Second, even if the height, arm length, and striking motion of the striker are different, the state in which the putter head, the mounting portion, and the parallel line are in close contact with each other can be continuously maintained before, during, and after striking.

Third, the stroke is made at the same height as the putter head at the actual field.

Fourth, an assembly assisting unit for assembling the putter head to the mounting part of the golf putting training machine is provided, so that a putter can be trained also with a general putter head.

Drawings

FIG. 1 is a perspective view showing an example of a conventional putting trainer;

FIG. 2 is a schematic diagram showing a putter trajectory;

FIG. 3 is a perspective view showing the base and the rotating body and mounting portion of the putting trainer of the present invention;

FIG. 4 is a perspective view showing the swash plate of the putting trainer;

FIG. 5 is a schematic view enlarged from a section a to a' of FIG. 3, showing the putter head assembled;

FIG. 6 is a schematic view showing a section b-b' of FIG. 4;

FIG. 7 is a perspective view showing a putter head that can be assembled to a mounting portion;

FIG. 8 is a perspective view showing yet another putter head that can be assembled to a mounting portion;

FIG. 9 is a schematic view enlarging a portion '6' of FIG. 3;

FIG. 10 is a sectional view showing an example of the putter head being attached to the projection plate;

FIG. 11 is a cross-sectional view showing the coupling relationship of the wheels with the parallel lines;

FIG. 12 is a cross-sectional view showing still another coupling relationship of the wheels with the parallel lines;

FIG. 13 is a perspective view showing another example of the wheel;

fig. 14 is a partial perspective view showing still another example of the parallel lines;

FIG. 15a is a sectional view showing an elastic member provided to a base;

FIG. 15b is a sectional view showing the elastic member and the rotating body provided to the base;

FIG. 15c is a schematic view enlarging portion P of FIG. 15 b;

FIG. 15d is a cross-sectional view showing the rotation of the rotating body during the movement of the wheel when striking with the putter head;

fig. 16 is a sectional view showing an adjusting bolt for adjusting the elastic force of the elastic member;

fig. 17 is a sectional view showing a modification of the base, the rotary body provided to the base, and the elastic member supporting the rotary body;

fig. 18 is an exploded perspective view showing a coupling relationship of the wheels and the connecting member;

fig. 19 is a perspective view showing the assembly assisting unit;

fig. 20 is a perspective view showing the assembly of the putter head with the assembly auxiliary unit of fig. 19;

fig. 21 is a sectional view showing that the putter head is assembled to the mounting part by the assembly assisting unit of fig. 19;

fig. 22 is a perspective view showing still another assembly assisting unit;

fig. 23 is a sectional view showing that the putter head is assembled to the mounting part by the assembly auxiliary unit of fig. 22;

FIG. 24 is a perspective view showing the bungee cord;

fig. 25 is a perspective view showing a modified example of the elastic cord;

fig. 26 is a perspective view showing still another assembly assisting unit;

fig. 27 is a perspective view showing still another assembly assisting unit.

Description of the reference numerals

1: base 2: rotating body

2 a: cover 2 b: a cut part formed on the cover

3. 30: and 4, wheel: mounting part

5. 25: the convex portion 7: hanging platform

8: the inclined plate 9: golf ball

10: ball connecting rod 11: hanging and connecting rod

12: hanging parts 13, 24: push rod head

14: striking surface 15: handle bar

16: end 17 of the connecting member: ball traveling groove

18: parallel lines 19, 26: bearing assembly

20. 20 a: elastic member 21: circumference valley

22. 23: assembly groove

27. 28: a groove formed on the outer circumferential surface of the wheel along the circumferential direction

31: concave-convex 32: rotating shaft

33: rotation shaft coupling hole 34: circumference of circle

35: adjusting bolts 36, 39: elastic rope

37. 45, 46, 47: groove 38: hook

40: center point of rotary track of push rod head

41. 42, 43, 44: the assembly assisting unit 48: supporting seat

50: connecting member 52: center part of connecting member

Detailed Description

The present invention is described in detail below with reference to the attached drawings. First, terms or words used in the present specification and claims should not be interpreted as being limited to dictionary meanings, but interpreted as meanings and concepts conforming to the technical idea of the present invention on the basis of the principle that the inventor can appropriately define the concept of the terms in order to explain his invention by the best method. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely examples of the present invention and do not represent all the technical ideas of the present invention, and thus various equivalents and modifications may be substituted for these at the time of application of the present invention.

Fig. 2 is a schematic diagram showing a putter trajectory. The putting action is an action in which the putter head 13 strikes the golf ball in the direction toward the target by the rotational motion of the pendulum on the circumference 34 with reference to the center point 40 of the shoulders. The putting practice machine of the present invention assists such a circumferential rotational movement in a state where the hitting surface of the putter head forms a perpendicular surface with the target direction.

Fig. 3 is a perspective view showing a base, a rotary body and a mounting part of the putting training machine according to the present invention, fig. 4 is a perspective view showing a swash plate of the putting training machine, and fig. 5 is a sectional view taken along a line a-a' of fig. 3.

As shown in the drawings, the putting trainer comprises a base 1, a sloping plate 8, a rotating body 2 rotatably provided on the base 1, a mounting part 4 movably provided on the rotating body 2, and an elastic part 20 for providing elastic force to the rotating body 2.

The base 1 is a substantially rectangular frame, and a rotating body 2 is provided in an inner space thereof. Two opposite side surfaces of the four side surfaces of the base 1 are formed with rotation shaft coupling holes 33, and a side surface corresponding to the front end of the rotation body 2 is formed with a hanging table 7. The hanging part 12 of the sloping plate 8 is arranged on the hanging table 7.

As shown in fig. 4 and 6, the sloping plate 8 is formed with its upper surface sloping. The inclined plate 8 includes a ball running groove 17 formed in a longitudinal direction thereof, a ball connecting rod 10 connected to the golf ball 9, and a hitch rod 11.

The golf ball 9 is rotatably provided at one end of the ball connecting rod 10, and the hanging stand 11 is formed at the other end. The outer circumferential surface of the golf ball 9 is formed with a circumferential groove 21, and one end of the ball connecting rod 10 is fitted into the groove 21 so that the golf ball 9 can be rotated.

The ball connecting rod 10 is configured to be inserted into the ball traveling groove 17, and the golf ball 9 and the ball connecting rod 10 ascend along the inclined surface and then descend along the inclined surface in case of hitting the golf ball 9, and the golf ball 9 stops being located at the home position in case the hook rod 11 is hooked on the upper end of the inclined plate 8.

The rotating body 2 is rotatably provided to the base 1. Specifically, the rotary body 2 includes two parallel lines 18 formed along the longitudinal direction thereof, and a rotary shaft 32 inserted into a coupling hole 33 provided in the base 1.

The two parallel lines 18 have a downwardly convex curved track with a structure that is low in the center and increases in height toward both ends. The wheels 3 move along the track.

Preferably, the two parallel lines 18 have a greater curvature of the trajectory formed by the putter head when putting, so that the wheel 3 rotates about the axis of rotation 32 as the putter moves. More preferably, the two parallel lines 18 have a circumferential track (a circumferential track that is a portion of a circle) with a curvature that is greater than the curvature of the track formed by the putter head when the putter is being putted.

An empty space is provided between the two parallel lines 18, and the swash plate 8 and the mounting portion 4 are provided in the empty space.

The rotary shaft 32 is formed to protrude outward from both side surfaces of the center of the rotary body 2 and to be inserted into a coupling hole 33 provided in the base 1.

Preferably, the rotating body 2 further includes a cover 2a, and a cut-out portion 2b formed at the cover 2 a. The cover 2a is formed to extend along the length direction of the parallel lines 18 on the upper side of the parallel lines 18. The cover 2a functions to prevent the wheel 3 from falling off when struck.

The cut-out portion 2b is formed by cutting out the cover 2a, and the wheel 3 and the both side end portions 16 can be inserted and installed through the cut-out portion 2b when the installation portion 4 is installed on the parallel line 18.

The mounting part 4 is connected with the push rod heads 13 and 24

The assembled parts being movably arranged on a plane along parallel lines 18And a row line 18. The mounting portion 4 includes two wheels 3, a connecting member 50 connecting the two wheels 3, and

projections

5, 25 formed to project from the connecting member 50.

As shown in fig. 5, 11 and 12, the wheels 3 are rotatably provided at both side ends 16 of the link 50. For this purpose, the two side ends 16 are connected to the wheel 3 by bearings 19.

The outer peripheral surface of the wheel 3 is formed with a groove 27 along the circumferential direction. The groove 27 serves to prevent the wheel 3 from coming out of the parallel line 18, and is preferably formed to match (correspond to) the shape of the parallel line 18.

As shown in fig. 13 to 14, when the parallel lines 18 are formed with the irregularities 31, the outer peripheral surface of the wheel 30 may be formed with irregularities corresponding to the irregularities 31.

The connecting member 50 includes two side end portions 16 and a central portion 52 between the two side end portions 16. The wheels 3 are rotatably provided at both side end portions 16, and the projections 5 are formed at the central portion 52. The central portion 52 is formed to have a height lower than the both side end portions 16 and a width larger than the width of the putter heads 13, 24.

The center portion 52 is formed lower than the both side end portions 16 in order to allow the putter heads 13, 24 to hit the golf ball at the same height as the actual field as possible. If the connecting member 50 is formed in a straight line, the putter heads 13, 24 are spaced from the ground by an amount corresponding to the height of the radius of the wheel 3 and the rotation axis coupling hole 33, unlike the striking condition at the actual site, in the present invention, the central portion 52 is formed lower than both side end portions 16 and the

protrusions

5, 25 are formed at the central portion 52, and the width of the central portion 52 is made larger than the width of the putter heads 13, 24 in order to allow the putter heads 13, 24 to be fitted to the

protrusions

5, 25.

The

protrusions

5, 25 are formed as parts protrudingly formed at the connection member 50 to be inserted into the fitting grooves 22, 23 of the push rod heads 13, 24. The fitting grooves 22, 23 are formed on the lower face and the upper side of the pusher heads 13, 24.

It is preferable that the

protrusions

5, 25 are formed to match the fitting grooves 22, 23, and may be formed in various shapes in order to prevent the

protrusions

5, 25 and the fitting grooves 22, 23 from being separated from each other. This is because if the

protrusions

5, 25 are disengaged from the fitting grooves 22, 23 and separated, there is a possibility that the direction of the swinging motion of the pusher heads 13, 24 is deviated from the parallel line direction of the parallel line 18.

The elastic member 20 is provided on the base 1. Fig. 15b shows the elastic member 20 provided between the base 1 and the rotating body 2, showing a state where it is not hit by the pusher heads 13, 24, i.e. a state where the wheel 3 is located at the center of the rotating body 2. Fig. 15a shows the elastic member 20 with the rotating body 2 removed.

As shown in fig. 15a to 15c, the elastic member 20 is fixed to the base 1 at a central portion thereof and is provided at both side end portions thereof so as to elastically support the rotating body 2. For this reason, it is preferable that the elastic member 20 is formed to be elongated in the longitudinal direction of the rotating body 2 to have a radius of curvature smaller than that of the rotating body 2, thereby applying elastic force to the rotating body 2 in a state of being slightly bent by the rotating body 2.

In the figure, the center portion of one elastic member 20 is fixed to the base 1 and extends to both sides, but two elastic members 20 separated from each other may be provided on both sides, respectively.

Further, although the elastic member 20 is shown to extend to both sides around the rotation shaft 32, the elastic member 20 may extend only to the front end side (i.e., the direction of the hitch base 7) of one side of the swivel main body 2 around the rotation shaft 32. When the wheel 3 is located at the center of the rotating body 2, the two front ends of the rotating body 2 are located at the same height from the base 1, and as the wheel 3 moves along the parallel line 18 between the two front ends, the elastic member 20 applies a pushing elastic force and a pulling elastic force to the rotating body 2 accordingly.

Fig. 15d shows the putter heads 13, 24 after striking. In a state where the putting training machine is disposed such that the parallel line 18 faces the target point, the putting practice machine performs the striking in a state where the striking surfaces of the putter heads 13 and 24 are perpendicular to the direction facing the target point.

At this time, the mounting portion 4 moves along the parallel line 18 together with the pusher heads 13 and 24, and the rotating body 2 rotates about the rotating shaft 32, and the elastic member 20 applies an elastic force in the arrow direction to the rotating body 2, so that the parallel line 18 is brought into close contact with the wheel 3, and the mounting portion 4 is brought into close contact with the pusher heads 13 and 24, and by this close contact, the rocking of the pusher heads 13 and 24 is performed along the parallel line 18, and the hitting surfaces of the pusher heads 13 and 24 are continuously held at a predetermined angle toward the target direction before, during, and after the hitting.

As described above, the golf putting training machine according to the present invention is arranged such that the target point of the impact delivery of the golf ball is located on the vertical plane of the impact surface when the putting motion of the golf ball delivery to the target point is performed by the impact surface of the putter heads 13 and 24, and thereafter, the hitting motion can be repeatedly performed while the impact surface is maintained at the set angle before, during, and after the impact.

The elastic force of the elastic member 20 can be increased or decreased as needed. For example, as shown in fig. 16, an adjusting bolt 35 may be provided below the elastic member 20, and the height of the adjusting bolt 35 may be adjusted to adjust the elastic force of the elastic member 20.

Fig. 17 is a sectional view showing a modification of the elastic member 20 a. The elastic members 20a are springs provided on both sides of the rotation shaft 32. The springs 20a are respectively provided at both sides of the rotation shaft 32 to apply an elastic force pushing the rotation body 2 upward to the rotation body 2.

Instead of the elastic spring 20a, an elastic plate such as a leaf spring may be provided between the base 1 and the rotating body 2.

In addition, the push rod heads 13, 24 and the mounting portion 4 are assembled by inserting the

protrusions

5, 25 into the assembly grooves 22, 23 of the push rod heads 13, 24 in the present invention. Therefore, the lower surfaces of the putter heads 13, 24 should be formed with the fitting grooves 22, 23.

However, in the case of the assembly assist unit, a general putter head having no assembly grooves 22 and 23 can be assembled to the mounting portion 4. As shown in fig. 19 to 21, the assembly assisting unit 41 includes a body, and an assembly mechanism that assembles the body to the putter heads 13, 24.

The body is a flat plate comprising a slot 37 and a support seat 48. The projections 5 are inserted into the slots 37 for assembly. The support base 48 is an L-shaped portion protruding from the lower end of the body, and supports the pusher heads 13 and 24.

The assembly mechanism comprises a hook 38 arranged on the body and an elastic rope 36 assembled on the hook 38. The hooks 38 are provided on one side of the body, preferably on both sides of the body. The elastic cord 36 is an elastic cord, and as shown in fig. 20 and 24, the putter heads 13 and 24 are fixed to the main body in a state where both ends thereof are coupled to the hooks 38.

The bungee cord 36 may be manufactured in a variety of configurations. For example, as shown in fig. 25, the elastic cord 38 may be manufactured in a net (net) form.

Fig. 22 shows a modification of the fitting assistance unit, and differs from the fitting assistance unit 41 described above in that the groove 45 of the fitting assistance unit 42 is formed in the side surface of the main body. As shown in fig. 23, the projection 5 is inserted and fitted between the striking surface of the putter head 13 and the side surface of the body (i.e., the groove 45).

Fig. 26 to 27 show still another modification of the fitting assistance unit, which is different from the above-described fitting assistance unit in that only one groove 46 of the fitting assistance unit 43 of fig. 26 is formed in the main body, and only one fitting groove 47 of the fitting assistance unit 44 of fig. 27 is formed in the side surface of the main body. The method of combining the assembly assisting units 43, 44 with the putter head is as described above.

Claims

1. A golf putting trainer, comprising:

a base;

a rotating body which is provided on the base so as to be rotatable around a rotating shaft (32) provided in the center portion, includes parallel lines, and has a curvature larger than a track formed by the putter head when the putter is pushed;

an elastic component which is arranged at one side or two sides of the rotating body by taking the rotating shaft (32) as a reference and applies elastic force to enable the two front ends of the rotating body to rotate up and down alternately; and the number of the first and second groups,

a mounting portion capable of moving along parallel lines,

wherein the push rod head can be detachably arranged on the mounting part,

the mounting part moves along the parallel line along with the movement of the push rod head when the push rod is pushed, and along with the track formed by the push rod head, the rotating body correspondingly overcomes the elasticity of the elastic component to perform the alternate up-and-down rotating action of the two front ends by taking the rotating shaft (32) as the center, and the mounting part and the parallel line are kept in close contact and the mounting part and the push rod head are kept in close fit.

2. The golf putting training machine according to claim 1,

the elastic component is an elastic spring or an elastic plate arranged between the base and the rotating body, and applies elastic force pushing upwards or pulling downwards to the rotating body when the mounting part moves along a parallel line.

3. The golf putting training machine according to claim 1,

two parallel lines are formed in parallel along the length direction of the rotating body,

the mounting portion includes:

two wheels arranged to be movable along two parallel lines;

a connecting member connecting the two wheels; and

and a protrusion formed at the connection member and inserted into the fitting groove of the putter head.

4. The golf putting trainer machine according to claim 3, wherein the connection means comprises:

two side ends (16) fitted with wheels; and the number of the first and second groups,

a central portion (52) connecting both side end portions (16) and formed with the convex portion;

the central portion (52) is formed at a lower height than the side end portions (16) and has a width at least wider than the putter head so that the putter head can hit a golf ball at a low height.

5. The golf putting training machine according to claim 3,

the rotating body includes a cover elongated along the parallel lines to prevent the wheels from falling off at an upper side of the parallel lines.

6. An assembly aid unit, comprising:

a body formed with a groove;

the assembling mechanism is used for assembling the body on the push rod head,

wherein, the projections (5) and (25) arranged on the mounting part 4 of the golf putting training machine can be detachably inserted into the groove.

7. Assembly assisting unit according to claim 6,

the body is formed into a flat plate shape covering the striking surface of one side of the putter head,

the assembly device includes:

the hook is arranged on one side of the body; and the number of the first and second groups,

the elastic rope is arranged on the hook and is used for combining the push rod head and the body.