Inclination-adjustable golf swing platform

Abstract

The present invention addresses the problem of providing an inclination-adjustable golf swing platform in which the inclination of a footrest can be adjusted by using a plurality of actuators in which a lower rod and an upper rod sharing a partial height section in a height-variable manner vertically ascend or descend in the same direction, and thus the inclination of the footrest can be adjusted by a large inclination angle even though the platform is installed with a small level difference relative to the floor. To this end, the inclination-adjustable golf swing platform according to one aspect of the present invention comprises: a base part seated on the ground; a footrest disposed a predetermined height above the upper side of the base part; and a plurality of actuators which are installed on the base part and bend the footrest at several points to adjust the inclination of the footrest.

Description

Adjustable Tilt Golf Swing Platform

[0001] The present invention relates to a golf swing platform with adjustable inclination, and more particularly, to a golf swing platform that can adjust the inclination of a footrest on which a user steps in various directions and at various inclination angles.

[0002] While golf shots are sometimes played on flat surfaces, golfers often hit shots on a variety of terrain conditions, including downhill slopes, uphill slopes, gentle slopes, steep slopes, and undulating surfaces. Because these varying terrain conditions can affect the golf swing, it's important for golfers to practice shots on a variety of terrain conditions.

[0003] Currently commercialized golf swing platforms not only have an incline adjustment function so that the footrest that the user steps on can be inclined to one side, but recently, a 'split-driven golf swing platform' has been proposed in which the footrest is composed of multiple split plates so that each part of the footrest can be inclined at different angles.

[0004] A split-driven golf swing platform of this type is configured such that a plurality of split plates are arranged in a horizontal and vertical direction, and the inclination angle of each split plate is adjusted by a separate driving actuator.

[0005] However, the split-drive golf swing platform can feel very out of place on the actual course because the edges between the two adjacent split plates are created when each split plate is tilted at a different angle. In addition, the drive actuators that drive each split plate are installed at an angle with respect to the ground, which can cause the user to feel uncomfortable when standing on the footrest due to the narrow space under the footrest. In addition, the split-drive golf swing platform has the disadvantage of high manufacturing costs because it uses multiple split plates and drive actuators.

[0006] In this regard, a device has been proposed in which a single footrest capable of bending by a pushing force greater than a certain force is supported at multiple points by multiple actuators, and the multiple actuators are configured to adjust the pushing height of each point of the footrest.

[0007] Conventional techniques provide a fixed or stepwise incline for the footrest, but have the disadvantage of making it difficult to adjust the incline to the user's individual swing characteristics.

[0008] In addition, the conventional technology uses an actuator with a cylinder structure to control the incline of the footrest, but due to the cylinder structure characteristics of the actuator, there are problems such as height limitations, complex structure, and high manufacturing cost.

[0009] In particular, there is a height limit for the footrest and a resulting inclination angle limit. This is because, if the footrest has a height difference of approximately 20 cm or less from the general indoor floor, the golfer (user) can stand on the footrest and take a golf shot without much resistance, but if the height of the step exceeds 20 cm, or even 30 cm, the user feels uncomfortable and resistance when standing on the footrest and taking a golf shot.

[0010] However, in the case of the conventional technology, when an actuator having a cylinder structure is used and the cylinder structure actuator is applied in a place where the height of the step between the floor and the footrest is less than 20 cm due to the vertical length of the motor and the vertical length of the rod, there is a problem that it is difficult to actually adjust the incline of the footrest.

[0011] The problem to be solved by the present invention is to provide an incline-adjustable golf swing platform in which the incline of the footboard can be adjusted to a large incline angle even though it is installed at a low step with respect to the floor by adjusting the incline of the footboard using a plurality of actuators in which the lower rod and the upper rod share some height sections variably and vertically rise or fall in the same direction.

[0012] A golf swing platform with adjustable incline according to one aspect of the present invention comprises: a base portion that is placed on the ground; a footrest positioned at a predetermined height above the base portion; And it includes a plurality of actuators installed on the base part and adjusting the inclination of the foot plate by bending the foot plate at several points, each of the plurality of actuators includes a base housing, a fixed nut block installed on the upper part of the base housing, a screw-type lower rod that is screw-coupled to the fixed nut block and vertically moves in and out of the base housing through its own rotational motion and includes a vertical hollow, a rotating nut block that is coupled to the upper part of the screw-type lower rod and rotates and vertically moves together with the screw-type lower rod, a moving housing that is coupled to the rotating nut block to rotatably support the rotating nut block, a screw-type upper rod that is screw-coupled to the rotating nut block and vertically moves in and out of the vertical hollow by the rotational motion of the rotating nut block, a joint unit that connects the screw-type upper rod and the foot plate, and a rotational drive unit that is provided in the moving housing to rotate the rotating nut block in one direction and the opposite direction and vertically moves the screw-type lower rod and the screw-type upper rod in the same direction, and the joint unit The height varies depending on the sum of the vertical protrusion height of the screw-shaped lower rod outside the base housing and the vertical protrusion height of the screw-shaped upper rod outside the vertical hollow.

[0013] The above-mentioned rotary drive unit includes a motor installed in the moving housing, a worm that is rotationally driven by the motor and accommodated in the moving housing, and a worm wheel that is coupled to the rotary nut block and the screw-shaped lower rod and rotates while engaging with the worm to rotate the rotary nut block and the screw-shaped lower rod.

[0014] The golf swing platform further includes a first guide unit that guides vertical movement of the moving housing while the rotating nut block moves vertically along with rotation, and a second guide unit that guides vertical movement of the screw-type upper rod.

[0015] The first guide unit includes a guide leg fixedly arranged parallel to the base housing, and a vertical sliding block coupled to the moving housing and having a vertical sliding groove into which the guide leg is slidably fitted, and vertically slidingly moved with respect to the guide leg together with the moving housing, and the second guide unit includes a vertical guide groove formed in the vertical sliding block parallel to the vertical sliding groove, and a sliding leg inserted into the vertical guide groove so as to be vertically slidably moved and connected to the screw-type upper rod at the top.

[0016] The first guide unit includes a pair of guide legs fixedly arranged parallel to the base housing, a vertical sliding groove coupled to the moving housing into which the pair of guide legs are slidably fitted, and a pair of vertical sliding blocks that vertically slide relative to the pair of guide legs together with the moving housing, and the base housing is coupled on a lower horizontal plate connecting the lower ends of the pair of guide legs.

[0017] The second guide unit includes a pair of vertical guide grooves and a pair of sliding legs that are vertically slidably inserted into the pair of vertical guide grooves, the upper ends of the pair of sliding legs being connected by an upper horizontal plate portion, and the screw-shaped upper rod, the pair of sliding legs, and the joint unit are connected to each other through the upper horizontal plate portion.

[0018] The above joint unit includes a ball housing having an inner space with an open upper side, a ball member inserted into the ball-shaped inner space of the ball housing, and a stud extended upward from the upper surface of the ball member and coupled to the foot plate.

[0019] According to another aspect of the present invention, a golf swing platform with an adjustable incline comprises: a base portion that is settled on the ground; a footrest arranged above the base portion at a predetermined height; and a plurality of actuators installed on the base portion and configured to bend the footrest at multiple points to adjust an incline of the footrest, wherein each of the plurality of actuators comprises: a base housing; a lower rod that is driven by a driving unit to vertically move in and out of the base housing; an upper rod that is driven by the driving unit to vertically move in and out of a vertical hollow formed in the lower rod along the same direction as the lower rod; and a joint unit that connects the upper rod to the footrest, wherein the height of the joint unit varies depending on a change in the sum of a vertical protrusion height of the lower rod outward from the base housing and a vertical protrusion height of the upper rod outward from the vertical hollow.

[0020] According to another aspect of the present invention, an actuator for a golf swing platform capable of adjusting the inclination of a footrest is provided, the actuator for the golf swing platform comprising: a base housing; a fixed nut block installed on an upper portion of the base housing; a threaded lower rod that is screw-connected to the fixed nut block and vertically moves in and out of the base housing through its own rotational motion, the threaded lower rod including a vertical hollow; a rotating nut block that is coupled to an upper portion of the threaded lower rod and rotates and vertically moves together with the threaded lower rod; a moving housing that is coupled to the rotating nut block so as to rotatably support the rotating nut block; a threaded upper rod that is screw-connected to the rotating nut block and vertically moves in and out of the vertical hollow through the rotational motion of the rotating nut convex; a joint unit that connects the threaded upper rod and the footrest; The above-mentioned rotary nut block is provided in the moving housing to rotate in one direction and the opposite direction, and includes a rotation driving unit that vertically moves the screw-shaped lower rod and the screw-shaped upper rod in the same direction, and the height of the joint unit varies depending on the change in the sum of the vertical protrusion height of the screw-shaped lower rod outside the base housing and the vertical protrusion height of the screw-shaped upper rod outside the vertical hollow.

[0021] The golf swing platform with adjustable inclination according to the present invention uses a plurality of actuators that vertically raise or lower a lower rod and an upper rod that share some height sections variably in the same direction to adjust the inclination of the footboard, so that the inclination of the footboard can be adjusted to a large inclination angle even though it is installed with a low step from the floor.

[0022] FIG. 1 is a drawing illustrating an example of an incline-adjustable golf swing platform according to one embodiment of the present invention in an incline-adjusted state.

[0023] FIG. 2 is a perspective view showing an actuator for an incline-adjustable golf swing platform according to one embodiment of the present invention in a state lowered to the lowest height;

[0024] FIG. 3 is a perspective view showing an actuator for an incline-adjustable golf swing platform according to one embodiment of the present invention in a state in which the actuator is raised to its highest height.

[0025] FIG. 4 is a cutaway perspective view showing an actuator for an adjustable-tilt golf swing platform according to one embodiment of the present invention in a state in which the actuator is raised to its highest height;

[0026] FIG. 5 is a longitudinal cross-sectional view showing an actuator for an incline-adjustable golf swing platform according to one embodiment of the present invention in a state lowered to the lowest height.

[0027] FIG. 6 is a longitudinal cross-sectional view showing an actuator for an incline-adjustable golf swing platform according to one embodiment of the present invention in a state in which the actuator is raised to its highest height.

[0028] FIG. 7 is a partially exploded perspective view illustrating an actuator for an incline-adjustable golf swing platform according to one embodiment of the present invention.

[0029] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein.

[0030] In describing the present invention, the size and shape of components shown in the drawings may be exaggerated or simplified for clarity and convenience of explanation.

[0031] Additionally, terms specifically defined in consideration of the structure and operation of the present invention may vary depending on the intent or custom of the user or operator. These terms should be interpreted with meanings and concepts consistent with the technical spirit of the present invention, based on the contents of this specification.

[0032] In order to clearly explain the present invention, the description of parts unrelated to the technical idea of ​​the present invention is omitted, and the same reference numerals are used for identical or similar components throughout the specification.

[0033] In addition, in various embodiments, components having the same configuration are described only in representative embodiments using the same symbols, and in other embodiments, only configurations different from the representative embodiments are described.

[0034] Throughout this specification, when a part is said to be "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with another part intervening. Furthermore, when a part is said to "include" a component, this may mean that the other component is included, rather than excluding it, unless otherwise specifically stated. Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0035] FIG. 1 is a drawing illustrating an incline-adjustable golf swing platform according to an embodiment of the present invention in an incline-adjustable state, FIG. 2 is a perspective view illustrating an actuator for an incline-adjustable golf swing platform according to an embodiment of the present invention in a state lowered to a minimum height, FIG. 3 is a perspective view illustrating an actuator for an incline-adjustable golf swing platform according to an embodiment of the present invention in a state raised to a maximum height, FIG. 4 is a cut-away perspective view illustrating an actuator for an incline-adjustable golf swing platform according to an embodiment of the present invention in a state raised to a maximum height, FIG. 5 is a longitudinal sectional view illustrating an actuator for an incline-adjustable golf swing platform according to an embodiment of the present invention in a state lowered to a minimum height, FIG. 6 is a longitudinal sectional view illustrating an actuator for an incline-adjustable golf swing platform according to an embodiment of the present invention in a state raised to a maximum height, and FIG. 7 is a partially exploded perspective view illustrating an actuator for an incline-adjustable golf swing platform according to an embodiment of the present invention.

[0036] As illustrated in FIG. 1, an incline-adjustable golf swing platform (1) according to one embodiment of the present invention is configured to enable implementation of various incline angles of an actual field even in indoor areas such as indoor golf practice ranges or screen golf practice ranges.

[0037] To this end, an incline-adjustable golf swing platform according to one embodiment of the present invention comprises a base (2) that is settled on the ground, a footrest (4) that is arranged at a predetermined height above the base (2), and a plurality of actuators (1) that are arranged two-dimensionally, more preferably, in a matrix arrangement, on the base (4) and independently adjust the height of several points of the footrest (4) to bend the footrest (4) at several points, thereby variously adjusting the incline of the footrest (4).

[0038] The above-mentioned footrest (4) is made of a material having a strength higher than a standard value so as to be able to support the user's weight, but also having a certain level of ductility so that it can be bent when a force higher than a certain amount is applied by the actuator (1). In addition, a mat (not shown) can be detachably installed on the upper surface of the footrest (4). If there is a detachable mat, the detachable mat is also defined as a part of the footrest (4). In addition, the mat is also applied to an existing golf swing platform, and it is also possible to apply a mat that is the same as or similar to that applied to an existing golf swing platform. In this case, the base portion (2) may be, for example, the bottom portion of a rectangular base frame made by connecting a plurality of metal bars by welding. In this case, the base portion (2) may have any structure or shape as long as it provides a plane of the same level on which a plurality of actuators (1) are installed.

[0039] As well illustrated in FIGS. 1 to 7, each of the plurality of actuators (1) comprises: a base housing (100); a fixed nut block (200) installed on the upper portion of the base housing (100); a screw-shaped lower rod (300) that is screw-coupled to the fixed nut block (200) and vertically moves in and out of the base housing (100) through its own rotational motion, and includes a vertical hollow (320); a rotating nut block (400) that is fixedly installed on the upper portion of the screw-shaped lower rod (300) and rotates and vertically moves together with the screw-shaped lower rod (300); a moving housing (800) that is coupled to the rotating nut block (400) so as to rotatably support the rotating nut block (400); a screw-shaped upper rod (500) that is screw-coupled to the rotating nut block (400) and vertically moves in and out of the vertical hollow (320) through the rotational motion of the rotating nut convex (400); It includes a joint unit (600) that connects the upper end of the screw-shaped upper rod (500) and the corresponding point of the foot plate (4), and a rotation drive unit (700) that is provided in the moving housing (800) to rotate the rotation nut block (400) in one direction and the opposite direction, thereby vertically moving the screw-shaped lower rod (300) and the screw-shaped upper rod (500) in the same direction.

[0040] Each of the plurality of joint units (600) provided in the plurality of actuators (1) is connected to a corresponding point of the foot plate (4) to bend the foot plate (4) and determine the height of the corresponding point of the foot plate (4). In addition, it is possible to create various inclinations in the foot plate (4) by the height differences of various points of the foot plate (4). At this time, the height of each joint unit (600) that determines the height of the corresponding point of the foot plate (4) varies depending on the sum of the vertical protrusion height of the screw-shaped lower rod (300) toward the outside of the base housing (100) and the vertical protrusion height of the screw-shaped upper rod (500) toward the outside of the vertical hollow (320).

[0041] Meanwhile, it is preferable that the rotation drive unit (700) includes a motor (720) externally coupled to the moving housing (800) while lying horizontally, a worm (740) that is driven to rotate in one direction and the opposite direction by the motor (720) and a part of which is accommodated within the moving housing (800), and a worm wheel (760) that is coupled to the rotation nut block (400) and the screw-shaped lower rod (300) and rotates by gear meshing with the worm (740) to rotate the rotation nut block (400) in one direction and the opposite direction.

[0042] In addition, each of the plurality of actuators (1) further includes a first guide unit that guides the straight vertical movement of the moving housing (800) while the rotating nut block (400) moves vertically along with the rotation, and a second guide unit that guides the straight vertical movement of the screw-shaped upper rod (500) and the joint unit (600) connected thereto.

[0043] At this time, the first guide unit includes a pair of guide legs (912) fixedly arranged in parallel with the base housing (100), and a vertical sliding groove (922) coupled to the moving housing (800) into which the pair of guide legs (912) are slidably fitted, and a pair of vertical sliding blocks (920) that vertically slide with respect to the pair of guide legs (912) together with the moving housing (800). In addition, the second guide unit includes a vertical guide groove (924) formed in each of the pair of vertical sliding blocks (920) in parallel with the vertical sliding groove (922), and a pair of sliding legs (932) that are each inserted into the vertical guide groove (924) so ​​as to be vertically slidable and connected to the screw-type upper rod (500) at the top.

[0044] The above pair of guide legs (912) form a part of a guide frame (910) formed by bending metal. The above guide frame (910) integrally includes a lower horizontal plate portion (914) that is perpendicular to each of the pair of guide legs (912) and connects the lower ends of the pair of guide legs (912). A fastening hole for bolt fastening with the aforementioned base portion (2) may be formed in the lower horizontal plate portion (914). In addition, a hole (9142) can be formed in the center of the lower horizontal plate (914), and this hole (9142) can accommodate a part of the screw-shaped lower rod (300) when the screw-shaped lower rod (300) is lowered to its lowest position together with the lower opening of the base housing (100), which allows the height of the base housing (100) to be reduced, and overall, can contribute to reducing the step height of the golf swing platform with respect to the indoor floor (ground) to some extent.

[0045] The base housing (100) may be formed as a hollow box having an approximately rectangular cross-section with open top and bottom. The base housing (100) is preferably made of metal, but this does not limit the present invention. The base housing (100) may be joined to the horizontal plate (914), for example, by welding, so that the lower open portion covers the hole formed in the lower horizontal plate (914).

[0046] The above fixed nut block (200) can be fixedly joined to the upper end of the base housing (100), for example, by a press-fit method. A female threaded portion is formed in the center of the fixed nut block (200). The screw-type lower rod (300) includes a male threaded portion corresponding to the female threaded portion on the outer circumference thereof and is screw-joined to the fixed nut block (200). In addition, a rotating nut block (400) is fixedly joined to the upper end of the vertical hollow (320) formed in the screw-type lower rod (300) to form an integral part with the screw-type lower rod (300).

[0047] Accordingly, when the rotary drive unit (700) rotates the rotary nut block (400) in one or the opposite directions, the screw-type lower rod (300) coupled thereto can vertically rise or fall by the action between its male screw portion and the female screw portion of the fixed nut block (200). The screw-type lower rod (300) can be lowered to a position where its lower end is adjacent to the lower end of the base housing (100) or to a position where it passes the lower end of the base housing (100).

[0048] The above-described rotating nut block (400) is fixedly installed on the upper portion of the worm wheel (760) of the rotating drive unit (700) and coupled to the upper portion of the screw-shaped lower rod (300) via the worm wheel (760), so as to rotate and vertically move together with the screw-shaped lower rod (300). The above-described moving housing (800) includes a housing body with an open upper portion and a cover coupled to close the upper opening of the housing body, and rotatably supports the rotating nut block (400) by, for example, a bearing. Therefore, the rotating nut block (400) rotates integrally with the worm wheel (760) and the screw-shaped lower rod (300), and the moving housing (800) moves vertically together with the rotating nut block (400) that moves vertically while rotating, but does not rotate. The moving housing (800) is suppressed from moving in the rotational direction by the first guide unit, and only vertical movement is permitted. The above worm wheel (760) may be provided with a fixed structure at the bottom that is press-fitted into the upper part of the vertical hollow (320) of the screw-shaped lower rod (300) and coupled by a plurality of keys. Since the rotating nut block (400) is coupled to the worm wheel (760) to form an integral part, as a result, the rotating nut block (400) is also integrally coupled to the screw-shaped lower rod (300) and can move as an integral part.

[0049] The above-described screw-shaped upper rod (500) has a male screw portion corresponding to a female screw portion provided in the above-described rotating nut block (400) over almost the entire length, and therefore, when the above-described rotating nut block (400) rotates, the screw-shaped upper rod (500) moves vertically with respect to the above-described rotating nut block (400) due to the interaction between the male screw portion and the female screw portion. At this time, the rotational movement of the above-described screw-shaped upper rod (500) is suppressed by the second guide unit. The above-described screw-shaped upper rod (500) is configured to protrude into and out of the vertical hollow (320) formed in the above-described screw-shaped lower rod (300). When the above-described screw-shaped upper rod (500) is vertically lowered to its lowest point, most of the length of the above-described screw-shaped lower rod (500), that is, the remaining length section excluding the joint unit (600) and a portion thereof, is accommodated within the above-described vertical hollow (320). When the screw-shaped upper rod (500) is lowered to the maximum, the screw-shaped lower rod (300) is also lowered to the maximum, and therefore, in the lowered to the maximum, the screw-shaped lower rod (300) and the screw-shaped upper rod (500) are overlapped within the base housing (100), i.e., they share the upper portion of the height (see Fig. 5).

[0050] A circular lower block (520) can be connected to the lower end of the screw-shaped upper rod (500) by a fastener such as a bolt. The circular lower block (520) can function as a stopper and / or can slide against the inner surface of the vertical hollow (320) to enable the screw-shaped upper rod (520) to move vertically without shaking.

[0051] As mentioned above, the motor (720) of the rotation drive unit (700) is arranged horizontally rather than vertically. That is, the axis of the motor (720) extends horizontally. Generally, the motor (720) has the longest axis extension direction, and therefore, when the motor is arranged vertically, the height occupied by the motor inevitably increases. In the present embodiment, by arranging the motor (720) horizontally, it contributes to reducing the step height of the golf swing platform. The housing of the motor (720) is fixed to a mounting portion concavely formed on the rear surface of the moving housing (800). The axis of the motor (720) is directly connected to the worm (740) located within the moving housing (800). Therefore, the central axis of the worm (740) and the central axis of the motor (720) coincide. As mentioned above, the worm (740) driven by the motor (720) rotates the worm wheel (760) at a reduced speed, and by the rotation of the worm wheel (760), the screw-shaped lower rod (300) and the rotating nut block (400) integrally connected thereto rotate and move vertically simultaneously. The moving housing (800) rotatably supports the rotating nut block (400) on its upper portion.

[0052] As mentioned above, the second guide unit includes a vertical guide groove (924) formed in the vertical sliding block (920) parallel to the vertical sliding groove (922), and a pair of sliding legs (932) that are inserted into the vertical guide groove (924) so ​​as to be vertically slidable and connected to the screw-type upper rod (500) at the top.

[0053] The above pair of sliding legs (932) form a part of a sliding frame (930) formed by bending metal. The sliding frame (930) integrally includes an upper horizontal plate (934) between the upper ends of the pair of sliding legs (932) and at right angles to each of the pair of sliding legs (932).

[0054] At this time, it is preferable that the connection between the joint unit (600) and the upper end of the screw-shaped upper rod (500) and the sliding leg (932) is connected by a connecting structure including the upper horizontal plate portion (934) and a connecting plate (940). The joint unit (600) is coupled to the upper surface of the upper horizontal plate portion (934) so ​​as to be aligned with the central axis of the screw-shaped upper rod (500), and a connecting plate (940) is fitted to the upper outer periphery of the screw-shaped upper rod (500) and coupled by a bolt, and the connecting plate (940) is coupled to the lower surface of the upper horizontal plate portion (934) by, for example, a fastener, so that the joint unit (600) is integrally connected to the screw-shaped upper rod (500). It is possible to support the joint unit (600) more stably by using a structure in which the screw-shaped upper load (500) is supported by being connected to the upper horizontal plate (934) of the sliding frame (930) rather than a structure in which the screw-shaped upper load (500) is directly connected to the joint unit (600).

[0055] The above joint unit (600) is configured with a ball joint structure so that the connection angle between the screw-shaped upper rod (500) and the foot plate (4) can be changed in any direction 360 degrees, including forward, backward, left, right, and diagonally. The above joint unit (600) may be configured with a ball housing (620) having an inner space with an open upper side, a ball member (640) inserted into the ball-shaped inner space of the ball housing (620), and a stud (660) that is pulled upward from the upper surface of the ball member (640) and coupled to the foot plate (4).

[0056] Now, the operation of the present invention will be explained.

[0057] Under the control of the control unit, the motor (720), a significant portion of which is covered by the moving housing (800), is driven in one direction under the control of the control unit to rotate the worm (740) directly connected or formed on the shaft of the motor (720) in one direction, thereby rotating the worm wheel (760) that is gear-meshed with the worm (740). As a result, the screw-shaped lower rod (300), the upper portion of which is housed within the base housing (100) while integrally coupled with the worm wheel (740), moves vertically upward so as to protrude more upwardly outside the base housing (100) through interaction with the fixed nut block (400). At this time, the rotary nut block (400) that is integral with the screw-shaped lower rod (300) through the worm wheel (740) also moves vertically upward while rotating together with the screw-shaped lower rod (300), and the moving housing (800) that rotatably supports the rotary nut block (400) moves only vertically upward with its rotational movement suppressed with the help of the first guide unit. In addition, by the rotation of the rotary nut block (400), the screw-shaped upper rod (500), whose upper portion in length was accommodated in the vertical hollow (320) of the screw-shaped lower rod (300), interacts with the rotary nut block (400) to move vertically upward so that it protrudes more upwardly out of the vertical hollow (320) of the screw-shaped lower rod (500). At this time, the screw-shaped upper rod (500) moves only vertically upward with its rotational movement suppressed with the help of the second guide unit. The height increase range can be expanded much more than before by the sum of the height increase due to the upward movement of the screw-shaped lower rod (300) and the height increase due to the upward movement of the screw-shaped upper rod (500) that occurs simultaneously. The joint unit (600) coupled to the upper end of the screw-shaped upper rod (500) pushes up the corresponding point of the foot plate (4) and bends the corresponding point of the foot plate (4) to generate an incline at the corresponding point and the neighboring point.According to a control command from the control unit, the inclination of the footrest (4) can be adjusted in various ways by changing the height of a plurality of joint units (600) connected to the footrest (4) by a plurality of actuators (1) as shown in Fig. 1. As described above, the height-adjustable range of the joint unit (600) is expanded to twice or almost the same extent as in the past, while the height of the remaining components that adjust the height of the joint unit (600) is almost the same as in the past, and therefore, the step of the golf swing platform compared to the floor (particularly, the indoor floor) may not be large.

[0058] While the present invention has been described in detail using preferred embodiments, the scope of the present invention is not limited to the specific embodiments described above, and should be interpreted in accordance with the appended claims. Furthermore, those skilled in the art will appreciate that numerous modifications and variations are possible without departing from the scope of the present invention.

Claims

1. Base part that is fixed on the ground; A footrest placed at a certain height above the base portion; and It is installed on the base portion and includes a plurality of actuators that bend the foot plate at several points to adjust the inclination of the foot plate. Each of the above plurality of actuators, Base housing and, A fixed nut block installed on the upper part of the above base housing, A screw-shaped lower rod that is screwed into the above fixed nut block and moves vertically in and out of the base housing through its own rotational motion, and includes a vertical hollow; A rotating nut block coupled to the upper portion of the screw-shaped lower rod and rotating and vertically moving together with the screw-shaped lower rod; A moving housing coupled to the rotating nut block so as to rotatably support the rotating nut block; A screw-type upper rod that is screw-connected to the above-mentioned rotating nut block and moves vertically in and out of the vertical hollow by the rotational movement of the above-mentioned rotating nut block; A joint unit connecting the screw-shaped upper rod and the foot plate, A rotary drive unit is provided in the moving housing to rotate the rotary nut block in one direction and the opposite direction, and vertically moves the screw-shaped lower rod and the screw-shaped upper rod in the same direction. A golf swing platform with adjustable inclination, characterized in that the height of the joint unit varies depending on the sum of the vertical protrusion height of the screw-shaped lower rod outside the base housing and the vertical protrusion height of the screw-shaped upper rod outside the vertical hollow.

2. In claim 1, The above rotary drive unit, A motor installed in the above moving housing, A worm that is rotated by the above motor and is housed in the above moving housing, An incline-adjustable golf swing platform characterized by including a worm wheel that is coupled to the above-described rotating nut block and the above-described screw-shaped lower rod and rotates in engagement with the worm to rotate the above-described rotating nut block and the above-described screw-shaped lower rod.

3. In claim 1, A golf swing platform with adjustable inclination, characterized in that it further includes a first guide unit that guides the vertical movement of the moving housing while the rotating nut block moves vertically along with the rotation, and a second guide unit that guides the vertical movement of the screw-type upper rod.

4. In claim 3, The first guide unit includes a guide leg fixedly arranged parallel to the base housing, and a vertical sliding block coupled to the moving housing and having a vertical sliding groove into which the guide leg is slidably fitted, and which vertically slides with respect to the guide leg together with the moving housing. A golf swing platform with adjustable inclination, characterized in that the second guide unit includes a vertical guide groove formed in the vertical sliding block parallel to the vertical sliding groove, and a sliding leg inserted into the vertical guide groove so as to be vertically slidable and connected to the screw-type upper rod at the top.

5. In claim 3, A golf swing platform with an adjustable incline, characterized in that the first guide unit includes a pair of guide legs fixedly arranged parallel to the base housing, a vertical sliding groove coupled to the moving housing into which the pair of guide legs are slidably fitted, and a pair of vertical sliding blocks that vertically slide relative to the pair of guide legs together with the moving housing, and the base housing is coupled on a lower horizontal plate connecting the lower ends of the pair of guide legs.

6. In claim 3, A golf swing platform with adjustable inclination, characterized in that the second guide unit includes a pair of vertical guide grooves and a pair of sliding legs that are vertically slidably inserted into the pair of vertical guide grooves, the upper ends of the pair of sliding legs being connected by an upper horizontal plate portion, and the screw-shaped upper rod, the pair of sliding legs, and the joint unit are connected to each other through the upper horizontal plate portion.

7. In claim 1, A golf swing platform with adjustable inclination, characterized in that the joint unit includes a ball housing having an inner space with an open upper side, a ball member inserted into the ball-shaped inner space of the ball housing, and a stud extended upward from the upper surface of the ball member and coupled to the foot plate.

8. Base part that is fixed to the ground; A footrest placed at a certain height above the base portion; and It is installed on the base portion and includes a plurality of actuators that bend the foot plate at several points to adjust the inclination of the foot plate. Each of the above plurality of actuators, Base housing and, A lower rod driven by a drive unit and moving vertically in and out of the base housing, An upper rod driven by the above driving unit, which moves vertically in and out of a vertical hollow formed in the lower rod along the same direction as the lower rod; It includes a joint unit that connects the upper load to the footrest, A golf swing platform with adjustable inclination, characterized in that the height of the joint unit varies depending on the sum of the vertical protrusion height of the lower rod outside the base housing and the vertical protrusion height of the upper rod outside the vertical hollow.

9. As an actuator for a golf swing platform with adjustable footrest inclination, base housing; A fixed nut block installed on the upper part of the above base housing; A screw-shaped lower rod that is screwed into the above fixed nut block and moves vertically in and out of the base housing through its own rotational motion, and includes a vertical hollow; A rotating nut block coupled to the upper portion of the screw-shaped lower rod and rotating and vertically moving together with the screw-shaped lower rod; A moving housing coupled to the rotating nut block to rotatably support the rotating nut block; A screw-type upper rod that is screw-connected to the above-mentioned rotating nut block and moves vertically in and out of the vertical hollow by the rotational movement of the above-mentioned rotating nut convex; A joint unit connecting the screw-shaped upper rod and the foot plate; A rotary drive unit is provided in the moving housing to rotate the rotary nut block in one direction and the opposite direction, and vertically moves the screw-shaped lower rod and the screw-shaped upper rod in the same direction. An actuator for an incline-adjustable golf swing platform, characterized in that the height of the joint unit varies depending on the sum of the vertical protrusion height of the screw-shaped lower rod outside the base housing and the vertical protrusion height of the screw-shaped upper rod outside the vertical hollow.

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