MULTI-PURPOSE GOLF PRACTICE MACHINE

Abstract

A multi-purpose golf practice machine is disclosed. The disclosed multi-purpose golf practice machine is for putting practice and comprises a base frame configured to be supported on the ground and a putting rail portion that has a curved shape and is installed to be connected to the base frame so as to guide a golf club along a putting trajectory, wherein the golf practice machine further comprises a connection joint portion that connects the base frame to the putting rail portion and allows changing a posture in various putting trajectory forms by rotating the putting rail portion back and forth with respect to the base frame.

Claims

1. A multi-purpose golf practice machine for putting practice, comprising: a base frame configured to be supported on the ground; and a putting rail portion that has a curved shape and is installed to be connected to the base frame so as to guide a golf club along a putting trajectory, wherein the golf practice machine further comprises a connection joint portion that connects the base frame to the putting rail portion and allows changing a posture in various putting trajectory forms by rotating the putting rail portion back and forth with respect to the base frame.

2. The multi-purpose golf practice machine of claim 1, wherein the connection joint portion comprises a rotation support portion fixedly installed on one side of the base frame; a rotation shaft portion rotatably installed on the rotation support portion to enable adjustment of left and right rotation angle of the putting rail portion; and a clip portion formed on an upper end of the rotating shaft portion and formed in an arch shape to secure a middle portion of the putting rail portion in a snap-fit manner while allowing the putting rail portion to be rotated forward and backward by an external force applied by a user.

3. The multi-purpose golf practice machine of claim 1, wherein the connection joint portion comprises a fixed shaft portion fixedly installed on one side of the base frame; and a clip portion formed on an upper end of the fixed shaft portion and formed in an arch shape to secure a middle portion of the putting rail portion in a snap-fit manner while allowing the putting rail portion to be rotated forward and backward by an external force applied by a user.

4. The multi-purpose golf practice machine of claim 1, wherein the putting rail portion is configured with at least two putting rail bars, each formed in a curved shape and connected to each other, and is configured to be transformable into various putting trajectory forms.

5. The multi-purpose golf practice machine of claim 4, wherein the at least two putting rail bars are provided with a coupling means that detachably couples two adjacent ends, the coupling means comprises a coupling recess formed on one end of two opposing ends of the two adjacent putting rail bars, a coupling protrusion formed on the other end of the two adjacent putting rail bars and configured to be inserted into and coupled to the coupling recess, and an attachment member, formed of any one of a Velcro means, a magnetic means, and a snap-fit means, configured to attach and detach the two opposing ends, an inner circumferential surface of the coupling recess is provided with multiple rotation-restricting grooves at preset intervals, and an outer circumferential surface of the coupling protrusion is provided with multiple rotation-restricting protrusions configured to be inserted into the rotation-restricting grooves to prevent relative rotation between the two putting rail bars when coupled.

6. The multi-purpose golf practice machine of claim 1, further comprising a swing rail portion detachably coupled to each end of the putting rail portion and configured, together with the putting rail portion, to guide a golf club along golf swing trajectories.

7. The multi-purpose golf practice machine of claim 6, wherein the swing rail portion comprises a first swing rail portion coupled to one end of the putting rail portion and configured to guide the golf club along backswing and downswing trajectories of the golf swing trajectories, and a second swing rail portion detachably coupled to the other end of the putting rail portion and configured to guide the golf club along follow-through and finish trajectories of the golf swing trajectories.

8. The multi-purpose golf practice machine of claim 7, wherein the first swing rail portion is configured such that at least two first swing rail bars are detachably coupled to each other, and the second swing rail portion is configured such that at least two second swing rail bars are detachably coupled to each other, allowing them to be transformable into various swing trajectory forms.

9. The multi-purpose golf practice machine of claim 7, wherein the first swing rail portion and the second swing rail portion are configured not to be connected to each other.

Description

MODE FOR INVENTION

[0042] Objectives, aspects and features of the present invention that are described above, and other objectives, aspects and features of the present invention, will be more easily understood through the accompanying drawings and related exemplary embodiments. However, the present invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those of ordinary skill in the art.

[0043] In this specification, when it is said that any element is positioned on other elements, it means the element is directly on the other element or above the other element with at least one intermediate part. In the accompanying drawings, the thickness of an element is exaggerated for the effective description of the technical contents.

[0044] Embodiments are described herein with reference to cross-sectional illustrations and/or plane illustrations that are idealized exemplary illustrations. In the drawings, the thicknesses of layers and regions are exaggerated, for better understanding and ease of description. Accordingly, shapes of the exemplary views may be modified according to manufacturing techniques and/or allowable errors. As such, variations from the shapes of the illustrations, as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. For example, an implanted region illustrated as a rectangle may have rounded or curved features. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of example embodiments. It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. Embodiments described and exemplified herein include complementary embodiments thereof.

[0045] In the following description, the technical terms are used only for explaining a specific exemplary embodiment while not limiting the present invention. The terms of a singular form may include plural forms unless specifically mentioned. The meaning of comprises and/or comprising does not exclude one or more components to be present or added besides a mentioned component.

[0046] The matters defined in the description are provided to assist in a comprehensive understanding of the exemplary embodiments. However, it is apparent that the exemplary embodiments can be carried out by those of ordinary skill in the art without those specifically defined matters. In the description of the exemplary embodiment, certain detailed explanations of related art are omitted when it is deemed that they may unnecessarily obscure the essence of the inventive concept.

[0047] Hereinafter, a multi-purpose golf practice machine 100 according to one embodiment of the present invention will be described with reference to the accompanying drawings.

[0048] A multi-purpose golf practice machine 100 for putting practice includes a base frame 101 configured to be supported on the ground, and a putting rail portion 120, which has a curved shape with a preset curvature and is configured to be connected to the base frame 101 via a connection joint 110, allowing the shaft of a putter P to move in contact along the rail, thereby guiding the putter along a putting trajectory and enabling putting practice.

[0049] The base frame 101 consists of two beams 102 and 103 connected in a T shape, with a connection joint portion 110 formed at the front end, and a pair of footrests 104, on which a user can stand to practice putting, are provided on both sides of the beam 102. The top surface of the footrests 104 is configured with foot position indicators 104a to guide the placement of the user's shoes.

[0050] In this invention, the base frame 101 may also be configured without the footrests 104, allowing the user to practice putting directly on the ground. Moreover, when the footrests 104 are provided, they may be configured to allow forward and backward position adjustment along the longitudinal direction of the sides of beam 102. In such cases, although not illustrated, movement guide slits may be formed on the sides of beam 102 to guide the movement of the footrests 104 along the longitudinal direction.

[0051] Additionally, although the base frame 101 of the present invention has been described as having a structure in which two beams 102 and 103 are connected in a T-shape as mentioned above, it is not limited to this configuration, and may be formed as a plate with a preset area. In addition, various configurations can be adopted as long as it is in a structure that can be installed and supported on the ground and support the putting rail portion 120 via the connection joint portion 110 provided on one side.

[0052] The connection joint portion 110 is formed on one side of the base frame 101 and is configured to detachably couple with the middle portion of the putting rail portion 120, thereby connecting the putting rail portion 120 to the base frame 101. The connection joint portion 110 is configured to allow adjustment of the forward and backward rotational angles of the putting rail portion 120 relative to the base frame 101, as well as adjustment of the left and right rotational angles.

[0053] Specifically, the connection joint portion 110 comprises a rotation support portion 112 fixedly installed on one side of the base frame 101, a rotation shaft portion 114 rotatably installed on the rotation support portion 112 to enable left and right rotational operation of the putting rail portion 120, and a clip portion 118 which is coupled to the end of the rotation shaft portion 114, is arch-shaped, and is configured to secure the middle portion of the putting rail portion 120 in a snap-fit manner, allowing the putting rail portion 120 to be rotated forward and backward by an external force applied by the user and fixed in posture.

[0054] The rotation shaft portion 114 has a bent portion 116 formed at a predefined angle relative to its vertical lower portion, extending outwardly from the base frame 101, which allows the clip portion 118 to be positioned outside the base frame 101, preventing a head of a putter P from contacting the rotation support portion 112 or the base frame 101 during putting practice, thereby avoiding interference with the practice.

[0055] However, the rotation shaft portion 114 is not limited to being configured in a form bent at a predefined angle, and it can be implemented in various forms as long as the clip portion 118 is positioned outside the base frame 101.

[0056] In the above description, the present invention has been described as being configured such that the forward and backward rotational operation of the putting rail portion 120 is enabled by the clip portion 118, and the left and right rotational operation of the putting rail portion 120 is enabled by the rotation support portion 112 and the rotation shaft portion 114. However, the present invention is not limited to such a configuration. In the present invention, the connection joint portion 110 may also be configured without the rotation support portion 112 and the rotation shaft portion 114 that rotates thereon. Instead, a shaft member may be directly and fixedly coupled to one side of the base frame 101, with the clip portion 118 installed at the end of the shaft member for rotational operation of the putting rail portion 120 to adjust the posture. This configuration allows the putting rail portion 120 only to be rotated forward and backward via the clip portion 118. In this case, the shaft member may has an upper part bent at a predefined angle, similar to the rotation shaft portion 114, with its lower end fixedly attached to one side of the base frame 101 and its upper end coupled to the clip portion 118. With this configuration, the clip portion 118 is positioned outside the base frame 101, preventing the head of the putter P from interfering with the rotation support portion 112 or the base frame 101 during putting practice.

[0057] However, the shaft member is not limited to a bent configuration at a predetermined angle, and may be implemented in various forms as long as the clip portion 118 is positioned outside the base frame 101.

[0058] As described above, the present invention may be configured to allow only forward and backward rotational operation of the putting rail portion 120 by providing only the clip portion 118 on the base frame 101. Alternatively, it may be configured with the rotation support portion 112, the rotation shaft portion 114, and the clip portion 118 to enable not only forward and backward rotational operation but also left and right rotational operation of the putting rail portion 120. However, instead of providing only the clip portion 118 for forward and backward rotational operation of the putting rail portion 120, the clip portion 118 may installed at the end of the rotation shaft portion 114, which is rotatably mounted on the rotation support portion 112, as illustrated in the drawings. This configuration allows the putting rail portion 120 to perform not only forward and backward rotational operation through the clip portion 118, but also left and right rotational operation through the left and right rotation of the rotation shaft portion 114, enabling a wider range of posture adjustments and a greater variety of putting trajectories.

[0059] The putting rail portion 120 has a curved shape with a preset curvature and is configured to guide the putting trajectory of the user as the lower part of the shaft of the putter P moves in contact with it.

[0060] In the present invention, the putting rail portion 120 is configured to include two putting rail bars 121, which are configured to be detachably coupled to each other. However, the putting rail portion 121 may be composed of a single rail bar or three or more rail bars. In the following embodiment description, the putting rail portion 120 will be explained as being composed of two putting rail bars 121.

[0061] At the two opposing ends of the two adjacent putting rail bars 121, a coupling means 130 is provided to detachably connect the two putting rail bars 121.

[0062] As illustrated in FIGS. 5 and 6, the coupling means 130 includes a circular coupling recess 131 formed on one end of one of the opposing putting rail bars 121, a circular coupling protrusion 132 formed on the other end of the other putting rail bar 121 and configured to be inserted into the coupling recess 131, and attachment members 133 and 134 provided at both opposing ends to attach the two ends together.

[0063] In the present invention, the coupling means 130 is not limited to being composed of the coupling recess 131, the coupling protrusion 132, and the attachment members 133 and 134. It may also include any other coupling structure or means capable of detachably connecting the two opposing ends of the putting rail bars 121.

[0064] Furthermore, the attachment members 133 and 134 may be composed of Velcro means, magnetic means, snap-fit means, or the like, but are not limited to the mentioned examples, as the attachment members may also include various other types of attachment members in addition to Velcro, magnetic means, and snap-fit means. In this embodiment, the attachment members are composed of magnetic means.

[0065] Specifically, the attachment members 133 and 134 are configured to include a first magnetic attachment member 133 formed around one end of one of the opposing putting rail bars 121 and a second magnetic attachment member 134 formed around the other end, which attaches to the first magnetic attachment member 133 via magnetic force.

[0066] At this time, both the first magnetic attachment member 133 and the second magnetic attachment member 134 may be formed of magnetic materials that attract each other to couple the adjacent putting rail bars 121. Alternatively, one of the first and second magnetic attachment members 133 and 134 may be made of a magnetic material, while the other is made of a metallic material that adheres to the magnetic material, enabling the two putting rail bars 121 to be coupled by magnetic force.

[0067] The coupling means 130 of the present invention may further include multiple rotation-restricting grooves 135 formed at preset intervals along the inner circumferential surface of the coupling recess 131 and multiple rotation-restricting protrusions 136 formed at preset intervals along the outer circumferential surface of the coupling protrusion 132. When the coupling protrusion 132 is inserted into the coupling recess 131, the rotation-restricting protrusions 136 are inserted into the rotation-restricting grooves 135, thereby preventing relative rotation between the two putting rail bars 121.

[0068] Since even without the rotation-restricting grooves 135 and the rotation-restricting protrusions 136, the two putting rail bars 121 are attached to each other by magnetic force through the first magnetic attachment member 133 and the second magnetic attachment member 134, the two putting rail bars 121 remain fixed and do not undergo relative rotation unless a strong external force is applied. However, by including the rotation-restricting grooves 135 and the rotation-restricting protrusions 136, the two adjacent putting rail bars 121 are more strongly secured.

[0069] As described above, the putting rail portion 120 of the present invention is configured with two putting rail bars 121 connected to each other, wherein the two putting rail bars 121 are configured to be detachably coupled, allowing for various configurations. Additionally, although not illustrated, a rotational connection means may be configured to transform the two adjacent putting rail bars 121 into various forms by rotating them relative to each other while being connected to each other without being relatively separated from each other.

[0070] The usage aspects of the present invention are explained as follows:

[0071] The user may press-fit the middle portion of the putting rail portion 120 into the opening of the clip portion 118 to couple and mount the putting rail portion 120 to the clip portion 118 in a snap-fit manner, as shown in FIGS. 1 and 3. In this state, the user may move the putter shaft to be in contact with the putting rail bar 120 using the putter P, thereby practicing putting by following the putting trajectory represented by the putting rail bar 120.

[0072] The user may adjust the forward and backward rotation angle of the putting rail portion 120 relative to the clip portion 118 by applying an external force to rotate the putting rail portion 120 forward and backward (see FIGS. 1 and 3). Additionally, by rotating the rotation shaft portion 114 to the left or right, the user may adjust the left and right rotation angle of the putting rail portion 120, as shown in FIG. 2, which allows the user to modify the posture of the putting rail portion 120 into various forms of putting trajectories and practice putting in a manner that suits the user's individual preferences.

[0073] In particular, the present invention allows the putting rail portion 120 to form various putting trajectories not only by adjusting its forward and backward or vertical rotation angles through the connection joint 110, thereby modifying its posture, but also by altering the shape of the putting rail portion 120 itself to create even more types of putting trajectories.

[0074] Since the putting rail portion 120 consists of two curved putting rail bars 121, and the two adjacent putting rail bars 121 can be detachably coupled by adjusting the relative rotation angle, as shown in FIG. 7, the shape of the putting rail portion 120 can be modified into various forms of putting trajectories, thereby enabling the user to practice putting with various trajectories tailored to the user's needs.

[0075] Although not illustrated, the outer circumferential surface of the putting rail portion 120 in the present invention may include markings at predefined intervals along its length direction to allow the user to adjust the putting distance during putting practice.

[0076] Meanwhile, although the putting rail portion 120 has been described as consisting of two putting rail bars, it is not limited to this configuration, such that the putting rail portion may also consist of a single putting rail bar with a preset curvature. In this case, since the putting rail portion cannot undergo shape modification itself, it cannot form putting trajectories through such modifications. However, the putting rail portion may be adjusted in posture by performing forward and backward rotational operations relative to the clip portion 118, or by combining forward and backward rotational operations relative to the clip portion 118 with left and right rotational operations using the rotation shaft portion 114, thereby allowing the user to set a putting trajectory that suits the user's preferences.

[0077] Additionally, the putting rail portion 120 of the present invention is not limited to being composed of one (single) or two putting rail bars. The putting rail portion 120 may consist of three, four, five, six, or more putting rail bars, allowing it to form various putting trajectories through shape modifications of the putting rail portion itself.

[0078] Referring to FIG. 8, the present invention may be configured to allow the putting rail portion 120 to be mounted on the connection joint portion 110 so that the user can practice putting. Additionally, swing rail portions 140 may be coupled to respective sides of the putting rail portion 120, enabling the user to practice golf swings using a golf club such as a driver, a wood, and an iron.

[0079] The swing rail portion 140 is configured to include a first swing rail portion 141, which is detachably coupled to one end of the putting rail portion 120 and guides the golf club along the backswing and downswing trajectories of the golf swing trajectories, and a second swing rail portion 143, which is detachably coupled to the other end of the putting rail portion 120 and guides the golf club along the follow-through and finish trajectories of the golf swing trajectories. The golf club follows the backswing and downswing trajectories along the first swing rail portion 141, then makes impact while being guided by the putting rail portion 120 connected to the first swing rail portion 141. After impact, the golf club is guided by the second swing rail portion 143 connected to the putting rail portion 120, completing the follow-through and finish.

[0080] Both the first swing rail portion 141 and the second swing rail portion 143 may be composed of multiple rail bars with curved shapes, and these rail bars may be detachably coupled to each other by adjusting their relative rotational angles.

[0081] Specifically, the first swing rail portion 141 is configured to include multiple first swing rail bars 142, which are detachably coupled to each other with the same coupling structure as that of the putting rail portion 120. Similarly, the second swing rail portion 143 is configured to include multiple second swing rail bars 144, which are also detachably coupled to each other with the same coupling structure as the putting rail portion 120.

[0082] Specifically, two adjacent first swing rail bars 142 may be configured to be detachably coupled to each other using the same coupling means as the coupling means 130 used to detachably connect the putting rail bars 121 of the putting rail portion 120, and two adjacent second swing rail bars 144 may also be configured to be detachably coupled to each other at their respective opposing ends using the coupling means 130.

[0083] In other words, all of the first swing rail bars 142, putting rail bars 121, and second swing rail bars 144 may have their adjacent ends detachably coupled to each other using the coupling means 130. In this case, the two adjacent ends may be coupled by adjusting their relative rotational angles, allowing the swing trajectory formed by the swing rail portion 140 and the putting rail portion 120 to be modified in various ways for different uses.

[0084] Furthermore, the present invention not only enables shape modification by coupling the rail bars 141, 121, and 144 of the swing rail portion 140 and the putting rail portion 120 at adjusted rotational angles, as described above, but also allows for further variations in swing trajectories by modifying the posture through forward, backward, and left-to-right rotations of the swing rail portion 140 and the putting rail portion 120 using the connection joint 110. This allows for a broader range of swing practice scenarios, including in-to-in, out-to-in, and in-to-out swing types, as well as other swings in a wider variety of trajectories.

[0085] A major feature of the present invention is that the overall rail portion, which consists of the swing rail portion 140 and the putting rail portion 120 to guide the golf swing trajectory, is designed as an open-loop structure, unlike the closed-loop rails of conventional swing practice machines.

[0086] Specifically, it is preferable that the end of the first swing rail portion 141 and the end of the second swing rail portion 143 are not connected. This design allows the first swing rail bars 142 of the first swing rail portion 141 to be modified into a desired swing trajectory and the second swing rail bars 144 of the second swing rail portion 143 to be shaped into a desired swing trajectory, enabling swing practice with a variety of swing trajectories.

[0087] Meanwhile, the multi-purpose golf practice machine of the present invention allows the user to detachably assemble the rail bars 141, 121, and 144 of the first swing rail portion 141, the putting rail portion 120, and the second swing rail portion 143 to create various swing trajectories as described above. However, as shown in FIG. 9, the rail bars 141, 121, and 144 may also be configured to have their rotation angles adjusted via an electric method.

[0088] Specifically, the coupling means 130 may be configured such that the circular coupling recess 131 is formed on one end of one rail bar 121, while the other end of the opposing rail bar 121 is provided with the circular coupling protrusion 132 that is inserted into the coupling recess 131. The coupling recess 131 and the coupling protrusion 132 may be configured to allow rotational movement, and a drive motor 150 may be coupled inside the coupling recess 131 on one end, and a motor shaft 151 of the drive motor 150 may be inserted into and axially coupled to a shaft coupling groove formed in the coupling protrusion 132 when the coupling protrusion 132 is inserted into the coupling recess 131, so that the two adjacent rail bars 121 rotate relative to each other and have their rotation angles adjusted in response to the rotation of the drive motor 150.

[0089] In this way, the present invention is configured such that the rail bars 141, 121, and 144 of the first swing rail portion 141, the putting rail portion 120, and the second swing rail portion 143 have their rotation angles adjusted through the operation of the drive motor 150, so that the first swing rail portion 141, the putting rail portion 120, and the second swing rail portion 143 can be electrically adjusted into various swing trajectories. This enables the formation of a golf practice system using the multi-purpose golf practice machine.

[0090] Referring to FIGS. 9 and 10, a golf practice system using the multi-purpose golf practice machine of the present invention may include the multi-purpose golf practice machine, in which the rail bars 141, 121, and 144 of the first swing rail portion 141, the putting rail portion 120, and the second swing rail portion 143 are electrically adjusted in rotation angle by the drive motors 150; a driving control unit 155 installed on each of the rail bars 141, 121, and 144 and configured to drive and control the drive motor 150 according to rotation angle information transmitted from a control terminal 160; and the control terminal 160 configured to transmit control information (rotation angle information) to the driving control unit 155 for controlling the rotation of the rail bars 141, 121, and 144 in the multi-purpose golf practice machine.

[0091] The driving control unit 155 includes a communication unit 156 for receiving the rotation angle information transmitted from the control terminal 160, and a motor control unit 157 configured to control the drive motor according to the rotation angle information received through the communication unit 156.

[0092] The control terminal 160 may be a wireless communication-enabled device such as a smartphone, tablet, or personal computer (PC). It includes a database 162 for storing and managing information on the swing trajectories of famous golfers such as Tiger Woods, Phil Mickelson, and Jack Nicklaus; a golf-player selection unit 164 for allowing the user to select a golfer; and a rail trajectory control unit 166 configured to extract swing trajectory information about the golfer selected through the golf-player selection unit 164 from the database 162, calculate the rotation angle information for the rail bars 141, 121, and 144 of the first swing rail portion 141, the putting rail portion 120, and the second swing rail portion 143 based on the extracted swing trajectory information, and transmit the calculated information to the driving control unit 155.

[0093] For example, if the user selects Tiger Woods through the golf-player selection unit 164 of the control terminal 160, the rail trajectory control unit 166 extracts Tiger Woods'swing trajectory information from the database 162, and based on the swing trajectory information of Tiger Woods, calculates the rotation angle information at which each drive motor 150 should rotate so that the rail bars 141, 121, and 144 of the first swing rail portion 141, the putting rail portion 120, and the second swing rail portion 143 are transformed into Tiger Woods'swing trajectory. The calculated rotation angle information is transmitted to the driving control unit 155, and then the motor control unit 157 individually controls the drive motors 150 configured in each coupling means 130 according to the received rotation angle information, thereby adjusting the rail bars 141, 121, and 144 of the first swing rail portion 141, the putting rail portion 120, and the second swing rail portion 143 to form Tiger Woods'swing trajectory. As a result, the user can practice their golf swing using Tiger Woods'swing trajectory, which will significantly improve the user's golf skills.

[0094] While the present invention has been illustrated and described in connection with certain preferred embodiments to exemplify the principles of the invention, it is not limited to the specific configurations and operations as depicted and described. Rather, it will be readily apparent to those skilled in the art that numerous changes and modifications can be made to the invention without departing from the spirit and scope of the appended claims. Accordingly, all such appropriate changes, modifications, and equivalents should be considered as falling within the scope of the invention as defined by the claims.

INDUSTRIAL APPLICABILITY

[0095] The present invention can be efficiently applied in the field of the golf equipment industry.

REFERENCE NUMERALS

[0096] 101 . . . BASE FRAME [0097] 102,123 . . . BEAM [0098] 104 . . . FOOTREST [0099] 110 . . . CONNECTION JOINT PORTION [0100] 112 . . . ROTATION SUPPORT PORTION [0101] 114 . . . ROTATION SHAFT PORTION [0102] 116 . . . BENT PORTION [0103] 118 . . . CLIP PORTION [0104] 120 . . . PUTTING RAIL PORTION [0105] 121 . . . PUTTING RAIL BAR [0106] 130 . . . COUPLING MEANS [0107] 131 . . . COUPLING RECESS [0108] 132 . . . COUPLING PROTRUSION [0109] 133,134 . . . ATTACHMENT MEMBER [0110] 135 . . . ROTATION-RESTRICTING GROOVE [0111] 136 . . . ROTATION-RESTRICTING PROTRUSION [0112] 140 . . . SWING RAIL PORTION [0113] 141 . . . FIRST SWING RAIL PORTION [0114] 142 . . . FIRST SWING RAIL BAR [0115] 143 . . . SECOND SWING RAIL PORTION [0116] 144 . . . SECOND SWING RAIL BAR [0117] 150 . . . DRIVE MOTOR [0118] 155 . . . DRIVING CONTROL UNIT [0119] 156 . . . COMMUNICATION UNIT [0120] 157 . . . MOTOR CONTROL UNIT [0121] 160 . . . CONTROL TERMINAL [0122] 162 . . . DATABASE [0123] 164 . . . GOLF-PLAYER SELECTION UNIT [0124] 166 . . . RAIL TRAJECTORY CONTROL UNIT