JP6462087B1 - Variable tilt table for golf practice - Google Patents

Abstract

A variable tilting table for golf practice in which the direction and angle of tilting can be freely set is provided simply and inexpensively.
A variable tilting table (100) for golf practice in which a tilt direction and an angle (θ) can be freely set, and a base (10) in a lowermost layer and a vertical axis (Z) set there ), An upper plate (30) which swingably engages with the vertical axis member (62) to form the uppermost layer, and is rotatable with respect to the vertical axis (Z) and is movable with respect to the upper plate (30) and the base ( 10), a turntable (20) that forms an intermediate layer, a motor (49) that imparts rotational force thereto and can be stopped at an arbitrary rotational phase (α), and an upper surface of the turntable (20) (29) and a cam mechanism (99) that varies the gap (G) between the lower surface (39) of the upper plate (30) in a wide and narrow manner. The cam mechanism (99) is a turntable (20). ) Of the diameter (D1) at one end (21) is widened and the gap (G) is narrowed at the other end (22). The
[Selection] Figure 1

Description

  The present invention relates to a golf practice variable tilt table that can freely set the direction and angle of tilt.

  In general indoor golf driving ranges, only flat ground is set due to the equipment cost constraints. However, since most golf courses have a gentle slope in the course, practice on a gentle slope is also necessary. Therefore, as disclosed in the cited document, for example, a golf practice variable tilting table in which the tilt direction and angle can be freely set by a support device such as a hydraulic jack capable of controlling the height has been put into practical use. ing. As an example, Patent Document 1 discloses a variable tilting table in which an inclined surface can be easily formed in an arbitrary tilting direction at an arbitrary tilting angle, and the tilting plate itself is not rotationally shifted. ing.

JP 7-236720 A

  However, since each apparatus is a complicated and large-scale machine facility, there is a problem that it is difficult to introduce it safely and appropriately not only for home use but also for business use. Therefore, a simpler and cheaper one has been demanded for widespread use.

  The present invention has been made in view of the above problems, and an object of the present invention is to simply and inexpensively provide a variable slope for golf practice in which the direction and angle of inclination can be freely set.

One aspect of the present invention is a golf practice variable slope base (100) capable of freely setting the direction and angle (θ) of the slope,
The lowermost base (10),
A vertical axis (Z) set on the base (10);
An upper plate (30) which is swingably engaged with the longitudinal axis (Z) to form the uppermost layer;
A turntable (20) which is rotatable with respect to the longitudinal axis (Z) and which is interposed between the upper plate (30) and the base (10) to form a middle layer;
A motor (49) that applies rotational force to the turntable (20) and can be stopped at an arbitrary rotational phase (α);
A cam mechanism (99) for changing the gap (G) between the upper surface (29) of the turntable (20) and the lower surface (39) of the upper plate (30) in a wide and narrow manner;
The cam mechanism (99) is formed so as to widen the gap (G) at one end (21) of the diameter (D1) of the turntable (20) and to narrow the gap (G) at the other end (22). ,
The cam mechanism (99)
A cam surface (91) formed on the lower surface (39) of the upper plate (30) along the first concentric circle (E) with the longitudinal axis (Z) as the center and changing the width of the gap (G). -93) a cam body (90);
Cam wheels (24 to 26) that roll on the cam surfaces (91 to 93) to change the gap (G) in a wide and narrow manner;
At least a pair of non-cam wheels (27, 28) formed along a second concentric circle (F) centered on the longitudinal axis (Z) and rolling on a plane (39) other than the cam surfaces (91-93). )
The cam wheels (24 to 26) are respectively disposed at an apex angle (K) and a base angle (L, M) of an isosceles triangle (J) inscribed in the first concentric circle (E).
The midline (H) connecting the midpoint (M) to the apex angle (K) in the base (N) of the isosceles triangle (J) is matched with the first diameter (D1),
A second diameter (D2) orthogonal to the first diameter (D1) is set;
The non-cam wheels (27, 28) are arranged in pairs at intersections of the second concentric circle (F) and the second diameter (D2).

  In the aspect of the invention, the first concentric circle (E) is close to the outer periphery of the turntable (20), the second concentric circle (F) is set on the inner peripheral side thereof, and the cam wheels (24 to 24) are set. 26) is arranged on the upper surface (29) of the turntable (20).

  In one aspect of the present invention, the cam body (90) has a trapezoidal convex portion (31-38) and an inverted trapezoidal concave portion (51-58) continuously along the first concentric circle (E). They are formed alternately.

  Moreover, the aspect of the outline visually recognized from the orthogonal | vertical direction of the said vertical axis | shaft (Z) is vertically symmetrical with the said convex part (31-38) and the said recessed part (51-58) in 1 aspect of this invention.

Moreover, in one aspect of the present invention, the turntable (20) is given a rotational force from the motor (49) via a speed reduction mechanism (40),
The speed reduction mechanism (40) includes a driven gear (41) engraved on a third concentric circle (R) centered on the longitudinal axis (Z);
A drive gear (42) meshing with the driven gear (41);
And a drive shaft (43) for transmitting the power of the motor (49) to the drive gear (42).

  In one embodiment of the present invention, an artificial turf (59) is attached to the upper surface of the upper plate (30), and the artificial turf (59) has a grid-like intersection (50) and a staggered pattern. The rolling prevention recesses (50) for the plurality of golf balls (11) are provided at any position of the intersection of the two, or the intersection where the radial intersecting line intersects the equidistant concentric circles.

  In one embodiment of the present invention, a controller (48) of the motor (49) is disposed in the vicinity of the base (10) or on the upper surface of the upper plate (30) to obtain an AC 100V power source to obtain the motor ( 49) can be controlled.

  As described above, according to the present invention, it is possible to simply and inexpensively provide a golf practice variable tilt table that can freely set the direction and angle of the tilt.

1 is a perspective view showing an external appearance of a golf practice variable slope (hereinafter, also referred to as “main slope”) according to an embodiment of the present invention, and FIG. 1 (B) is a front view. It is a top view for demonstrating the turntable of this inclination stand. It is a schematic plan view for demonstrating operation | movement of the cam mechanism of this inclination stand. It is a top view for demonstrating the upper board of this inclination stand.

  Hereinafter, preferred embodiments of the present invention will be described in detail. The present embodiment described below does not unduly limit the contents of the present invention described in the claims, and all the configurations described in the present embodiment are essential as means for solving the present invention. Not necessarily.

  FIG. 1 is a perspective view showing an external appearance of a golf practice variable slope base (main slope base) according to an embodiment of the present invention, and FIG. 1 (A) is a perspective plan view of a principal part, FIG. B) is a front view. As shown in FIG. 1 (A), the upper plate 30 having a substantially square shape when viewed from the top is attached with artificial grass 59 to simulate a gentle slope of a golf course, as will be described later with reference to FIG. It is configured.

  As shown in FIG. 1B, the tilting table 100 is a table that can freely set the direction of tilting and the tilting angle (hereinafter also referred to as “swinging angle”) θ. It is a structure with a correspondingly strong strength as a base for riding and hitting a golf ball. As the sturdy structure, the upper plate 30 of the tilting table 100 is swingable, but after the tilt angle θ is set, a pressing load that is several times the weight of the person who has performed golf swing is unevenly applied. So that it can be countered.

  In addition, the tilting table 100 simulates a gentle slope of a golf course and is used while a person is riding and hitting a golf ball while swinging. Even in the state, it is possible to change the inclination direction and the inclination angle. In addition, you may perform operation which changes inclination | tilt angle (theta) in the no-load state where the person is not riding on this inclination stand 100. FIG. Although the rocking angle θ is considered to be within 10 degrees with respect to the horizontal plane, since the setting within 6 degrees is sufficient for practical use, the tilting table 100 sets the tilt angle θ as a maximum of 6 degrees as an example. .

  As shown in FIG. 1B, the tilting table 100 has a three-layer structure in the order of the base 10, the turntable 20, and the upper plate 30 from the bottom to the top with the vertical axis Z as the center. The base 10 is a lowermost structural member, and as a structure that can withstand use in a stationary state on the ground or the like, a bending process and a metal material having a reinforcing material as illustrated in the figure are suitable, but the present invention is limited thereto. It may be a frame made of iron pipe (not shown). A motor 49 that rotates the turntable 20 is also disposed on the base 10. A cam mechanism 99 is constituted by the upper surface 29 of the turntable 20 and the lower surface 39 of the upper plate 30. The cam mechanism 99 is a mechanism for inclining the upper plate 30 as the turntable 20 rotates, and will be described in detail later.

  The vertical axis Z is erected vertically from the center of the base 10 as viewed from above. The upper plate 30 is a flat plate that forms the uppermost layer of the tilting table 100 and allows a person to stand and move. The joint on the back side of the central portion viewed from the plane, that is, the central portion of the lower surface is flexible. Is pivotably engaged with the upper end of the vertical axis Z. As an example, the apex O of the dome-shaped shaft member 62 is brought into contact with the center O (same reference numeral) of the lower surface 39 of the upper plate 30, and a wire or the like (not shown) can be prevented from being displaced or disconnected from their alignment position. May be combined. Or although illustration is abbreviate | omitted, you may engage between both by the universal joint so that the lower surface 39 and the base 10 of the upper board 30 may rock | fluctuate via each center O.

  As shown in a perspective view from above in FIG. 1A and as viewed from the front in FIG. 1B, the turntable 20 is disposed between the upper plate 30 and the base 10, The middle layer of the tilt table 100 is formed. The turntable 20 will be described assuming that the turntable 20 is rotatably supported on a vertical axis Z standing at the center of the base 10. The cam mechanism 99 is formed in a gap G between the upper surface 29 of the turntable 20 and the lower surface 39 of the upper plate 30 and is configured to vary the gap G in a wide and narrow manner.

  The cam mechanism 99 is formed in such a relationship that when the gap G is widened at one end 21 of the diameter D1 of the turntable 20, the gap G is narrowed at the other end 22. The cam mechanism 99 has cam surfaces 91 to 93 each having at least one of irregularities formed in a trapezoidal shape on the lower surface 39 of the upper plate 30 that is an upper layer of the turntable 20. The cam surfaces 91 to 93 are formed on concentric circles centered on the vertical axis Z, and have a shape that changes the width of the gap G as the turntable 20 rotates. The cam surfaces 91 to 93 are made of rubber.

  A first concentric circle E is set near the outer periphery of the turntable 20. A second concentric circle F is set on the inner peripheral side. The third concentric circle R is set near the inner circumference of the turntable 20 and is set on the inner circumference side of the second concentric circle F. Three cam wheels (hereinafter also referred to as “first cam wheels”, “second cam wheels”, “cam wheels” or simply “wheels”) 24 to 26 are disposed on the upper surface 29 of the turntable 20, and A cam mechanism 99 is configured to support the upper plate 30 while rolling the cam surfaces 91 to 93 formed on the lower surface 39 of the plate 30. Further, the cam mechanism 99 rolls only on a plane other than the cam surfaces 91 to 93 on the lower surface 39 of the upper plate 30, so that two non-cams that support the upper plate 30 without being raised or lowered. Wheels (hereinafter simply referred to as “wheels”) 27 and 28 are also provided.

  Of the three cam wheels 24 to 26, the first cam wheel 24 (position at 3 o'clock in FIG. 1 (B), 12 o'clock in FIG. 2) and the second cam wheels 25 and 26 (in FIG. 1 (B)). It is configured to move up and down in the opposite direction from the vicinity of 9 o'clock and the position near 6 o'clock in FIG. As shown in FIG. 1, the second cam wheels 25, 26 move up and down opposite to the first cam wheel 24. The horizontal height of the upper plate 30 is stably maintained by the pair of non-cam wheels 27 and 28 that function as hinges for the lifting operation.

  FIG. 2 is a plan view for explaining the turntable of the tilt base. As shown in FIG. 2, the turntable 20 does not necessarily have to be supported by the vertical axis Z as long as it is rotatable. here. As an example, the turntable 20 is formed in a hollow disk shape, and the outer periphery is slidably supported by a guide (not shown) instead of the central axis Z, thereby forming a substantially rotating shaft.

  The motor 49 applies a rotational force to the turntable 20 and can be stopped at an arbitrary rotational phase α (FIG. 3). Since it is driven by a 100 V power source (not shown), it can be used in ordinary households. The description of the control of the motor 49 is omitted, but the power is appropriately turned on and driven, and if it is turned off, the motor 49 is stopped. The ON / OFF switch of the motor 49 will be described later with reference to FIG.

  The turntable 20 is given a rotational force from the motor 49 via the speed reduction mechanism 40. The speed reduction mechanism 40 includes at least a driven gear 41, a drive gear 42, and a drive shaft 43 to transmit power. Note that the speed reduction mechanism 40 is not necessarily a gear device, and the upper surface 29 of the turntable 20 may be rotationally driven with a small rubber tire.

  As an example, the driven gear 41 is engraved on the upper surface 29 of the turntable 20 along a third concentric circle R that is close to the inner peripheral side about the vertical axis Z. A general pinion gear may be used as the drive gear 42 that can mesh with the driven gear 41. Further, since the turntable 20 is a hollow disk, the motor 49 is positioned in the hollow portion, and the rotation shaft extends in the diameter direction of the turntable 20 to form a drive shaft 43.

  Since the turntable 20 and the motor 49 are in a relationship in which their rotation axes are orthogonal to each other, the speed reduction mechanism 40 may be, for example, a bevel gear or the like as long as the conditions of axis orthogonality are satisfied in addition to the speed reduction conditions. Moreover, even if it is not a structure orthogonal to an axis | shaft, it is also possible to comprise by worm gear etc., for example. If a worm gear is used for the speed reduction mechanism 40, the brake can be omitted.

  A drive gear 42 is fixed to the tip of the drive shaft 43 so as to rotate integrally. The drive gear 42 meshes with the driven gear 41 and the power of the motor 49 is transmitted from the drive shaft 43. If the rotary system such as the turntable 20 and the motor 49 has a large inertia, a corresponding brake is required. In that case, the brake is released when the power is turned on, and is locked when the power is turned off. good.

  As shown in FIGS. 1 and 2, the cam mechanism 99 mainly includes a cam body 90, three first cam wheels 24 to 26, and two non-cam wheels 27 and 28. The cam body 90 is formed along a first concentric circle E centered on the vertical axis Z, and has cam surfaces 91 to 93 having a shape that varies the width of the gap G. The three first cam wheels 24 to 26 roll on the cam surfaces 91 to 93 to vary the gap G in a wide and narrow manner. The pair of non-cam wheels 27 and 28 are formed along a second concentric circle F centered on the vertical axis Z, and roll on a plane 39 other than the cam surfaces 91 to 93. The cam body 90 has a good result if it is formed by laminating, for example, rubber plates having a thickness of 10 mm in the thickness direction.

  Here, the first concentric circle E, the second concentric circle F, the first diameter D1, the second diameter D2, the isosceles triangle J, the three first cam wheels 24-26, 2 shown in FIG. The relationship between the non-cam wheels 27 and 28 will be described. The first concentric circle E is close to the outer periphery of the turntable 20, and the second concentric circle F is set on the inner peripheral side thereof. The third concentric circle R is close to the inner periphery of the turntable 20 and is set on the inner peripheral side of the second concentric circle F. Even if the configuration is reversed such that two non-cam wheels 27 and 28 are arranged on the first concentric circle E and three cam wheels 24 to 26 are arranged on the second concentric circle F, the operation can be improved. There is no hindrance.

  The three first cam wheels 24 to 26 are respectively disposed at the apex angle K and the base angles L and M of the isosceles triangle J inscribed in the first concentric circle E. The first diameter D1 coincides with a midline H connecting the midpoint M to the apex angle K on the base N of the isosceles triangle J. A second diameter D2 orthogonal to the first diameter D1 is set. The non-cam wheels 27 and 28 are disposed in a pair at the intersection of the second diameter D2 and the second concentric circle F.

  FIG. 3 is a schematic plan view for explaining the operation of the cam mechanism of the tilt base. The cam mechanism 99 will be described in more detail with reference to FIGS. As described above with reference to FIG. 1, the trapezoidal convex portions 31 to 38 forming the cam body 90 are provided at equal intervals along the first concentric circle E on the lower surface 39 of the upper plate 30 in the inclined base 100. They are arranged side by side. Moreover, as shown in FIG. 3, the position of each of the eight convex parts 31-38 arrange | positioned by arranging at equal intervals clockwise is specified. Concave portions 51 to 58 are formed at intervals between the eight convex portions 31 to 38.

  These are convex part 31, concave part 51, convex part 32, concave part 52, convex part 33, concave part 53, convex part 34, concave part 54, convex part 35, concave part 55, convex part 36, concave part 56, convex part 37, concave part 57, a convex portion 38, and a concave portion 58 are arranged in this order so as to form a clock face. As described above, the cam body 90 has the trapezoidal convex portions 31 to 38 and the inverted trapezoidal concave portions 51 to 58 continuously and alternately laid along the first concentric circle E on the lower surface 39 of the upper plate 30. It is constituted by. Further, the convex portions 31 to 38 and the concave portions 51 to 58 are vertically symmetrical in the shape of the contour viewed from the orthogonal direction of the vertical axis Z.

  The first cam wheel 24 rotates with respect to the convex portions 31 to 38 and the concave portions 51 to 58 like a pointer of a watch. When the first cam wheel 24 rides on the cam surfaces 91 to 93 of the cam body 90, the gap G is configured to vary freely. That is, when the first cam wheel 24 rolls in the order of the convex portion 31, the concave portion 51,..., The convex portion 38, and the concave portion 58, the first cam wheel 24 changes so as to widen again after the wide gap G becomes narrow. .

  As described above with reference to FIGS. 1 and 2, the cam mechanism 99 is formed in the gap G between the upper surface 29 of the turntable 20 and the lower surface 39 of the upper plate 30. Further, the cam mechanism 99 is formed in such a relationship that when the gap G is widened at one end 21 of the first diameter D1 of the turntable 20, the gap G is narrowed at the other end 22.

  The cam mechanism 99 has cam surfaces 91 to 93 in which convex portions 31 to 38 and concave portions 51 to 58 are formed by trapezoidal slopes on the lower surface 39 of the upper plate 30 that is an upper layer of the turntable 20. The cam surfaces 91 to 93 are formed along a first concentric circle E centered on the vertical axis Z. The cam mechanism 99 operates so as to change the width of the gap G by causing the first cam wheels 24 to roll on the cam surfaces 91 to 93 as the turntable 20 rotates.

  Further, the second cam wheels 25 and 26 move up and down opposite to the first cam wheel 24. The horizontal height of the upper plate 30 is stably maintained by the pair of non-cam wheels 27 and 28 that function as hinges for the lifting operation. As a result, the lower surface 39 of the upper plate 30 in contact with the first cam wheel 24 is raised, and the lower surface 39 of the upper plate 30 in contact with the second cam wheels 25 and 26 is lowered.

  The rotation phase α at which the first cam wheel 24 is positioned may be arbitrarily set and stopped by appropriately controlling the driving and stopping of the motor 49. As a result, it is possible to simply and inexpensively provide the golf practice variable slope base 100 capable of freely setting the slope direction and the angle θ. Further, with respect to the inclination angle θ, the turntable 20 can be stopped at a rotational phase α such that the first cam wheel 24 and the second cam wheels 25 and 26 come into contact with the slope formed by the cam surfaces 91 and 93. It ’s fine. In order to stop the turntable 20, a brake (not shown) that operates appropriately and arbitrarily is disposed at any position of the rotating system. The rotating system refers to the motor 49, the speed reduction mechanism 40, the turntable 20, and the like.

  FIG. 4 is a plan view for explaining the upper plate of the tilt base. As shown in FIG. 4, a controller 48 is disposed in the vicinity of the base 10 or in the corner of the upper plate 30 to obtain an AC 100V power source so that the drive of the motor 49 can be controlled. Since the tilting table 100 can use an AC 100V power source, it is also suitable for general household use. On the other hand, those skilled in the art can modify the design so that the tilting table 100 can be used in an environment where a three-phase AC 200V for business use is supplied or when installed overseas. It is easy.

  As shown in FIG. 4, an artificial turf 59 having a length of about 3 to 30 mm is attached to the upper plate 30 of the tilt table 100. This artificial turf 59 has a lattice drawn partially, and a rolling prevention recess 50 (same reference numeral) is provided at each of the lattice-shaped intersections 50.

  If the golf ball 11 is placed in the rolling prevention recess 50, even if the upper plate 30 is tilted, it is possible to prevent a problem of falling from the upper plate 30, which is convenient for golf practice. In FIG. 4, the lattice-like intersections 50 are illustrated, but the illustration is omitted without being limited to the lattices. May be adopted.

  The controller 48 disposed in the corner of the base 10 or the upper plate 30 has push buttons for controlling the motor 49 to be turned on and off while distinguishing the direction of right-turning or left-turning in a conspicuous design. . As an example of the controller 48, a button on which “left” characters are written and a button on which “right” characters are written are arranged side by side. Note that the actual character arrangement is reversed upside down in FIG. 4 for the convenience of the user. Further, instead of the characters “left” and “right”, an arrow indicating the rotation direction may be described.

  As described with reference to FIGS. 1 to 3, the first cam wheel 24 lifts a specific edge near the outer periphery of the upper plate 30, while the second cam wheels 25 and 26 are opposite in the vicinity of the outer periphery of the upper plate 30. Lower the side edge. As a result, the upper plate 30 is inclined in a specific direction. Here, while the “right” push button is being pressed, the first cam wheel 24 is moved in accordance with the clockwise rotation of the turntable 20, so that the specific edge that is lifted directly above is also moved in conjunction with it. To do.

  Next, when the pressing force is released from the “right” push button, the right rotation operation of the turntable 20 by the motor 49 is stopped, and the inclination direction of the upper plate 30 by the first cam wheels 24 and the second cam wheels 25 and 26 is stopped. The tilt angle θ is also fixed. This means that the brake is automatically actuated and locked to the rotating system such as the turntable 20 and the motor 49. These operations are the same for the “left” push button, and causes the turntable 20 to perform a right turn operation and a stop operation.

  Further, in order to increase or decrease the inclination angle θ, the turntable 20 has a rotational phase α such that the first cam wheels 24 and the second cam wheels 25 and 26 come in contact with the slope formed by the cam surfaces 91 and 93. Can be stopped. In order to realize this, it is only necessary to appropriately finely adjust an arbitrary push button of “left” or “right” by repeatedly pressing and releasing the pressure appropriately. As a modified example of the controller 48, “ON” and “OFF” push buttons may be used instead of the “LEFT” and “RIGHT” push buttons. In that case, the rotation direction of the motor 49 may be set to only one direction, and the motor 49 may only be controlled to be turned on and off without reversing the direction of right / left rotation.

  It is preferable that these “left” and “right” push buttons respond by simply pressing lightly with a person's toe or the tip of a golf club held by the person so as to be suitable for the application. It should be noted that the controller 48 shown in FIG. 4 does not clearly distinguish which side is fixed to the vicinity of the base 10 or the upper plate 30, but either side may be used. If it is fixed to the corner of the base 10, it may be configured to avoid interference with the upper plate 30.

  In addition, a square ball retaining frame 19 is set at a corner portion of the upper plate 30 as an area where the artificial grass 59 is not attached. Since the ball retaining frame 19 is surrounded by, for example, an artificial turf having a length of 10 mm, even if the upper plate 30 is inclined, it is possible to prevent a problem of falling from the upper plate 30. It is convenient for the practitioner to place the number of balls according to the practice menu on the ball retaining frame 19 and then get on the upper plate 30 so that the ball 11 can be appropriately pulled and used by the head portion of the golf club. .

  As described above, the golf practice variable tilt base 100 according to the embodiment of the present invention includes the one motor 49 driven by the low power of AC100V and the turntable 20 rotated by the speed reduction mechanism 40, and The direction and angle of the inclination can be freely set with a simple structure including a cam mechanism 99 that allows the gap G between the upper surface 29 of the turntable 20 and the lower surface 39 of the upper plate 30 to be varied in a wide and narrow manner.

  The variable slope for golf practice according to an embodiment of the present invention is simple and inexpensive, has a desired function, such as being able to be driven by one AC100V motor, and has a specification that does not limit the use environment. It can be used by a wide range of golf enthusiasts. Therefore, there is a possibility that it may be employed in ordinary homes, golf driving ranges, clubhouses, amusement parks, game centers, and the like.

  Although the embodiments and examples of the present invention have been described in detail as described above, it will be understood by those skilled in the art that many modifications can be made without departing from the novel matters and effects of the present invention. It will be easy to understand. Therefore, all such modifications are included in the scope of the present invention. For example, a term described with a different term having a broader meaning or the same meaning at least once in the specification or the drawings can be replaced with the different term in any part of the specification or the drawings. Further, the configurations and operations of the motor, the speed reduction mechanism, and the cam mechanism are not limited to those described in the embodiments and examples of the present invention, and various modifications can be made.

10 base, 11 golf ball, 19 ball retaining frame, 20 turntable, 21 one end (of first diameter D1), 22 other end (of second diameter D2), 24 (cam action to support upper plate 30) ) First cam wheels, 25, 26 (cam operation to support the upper plate 30) Second cam wheels, 27, 28 (no cam operation to support the upper plate 30) non-cam wheels, 29 (turntable 20 ) Upper surface, 30 upper plate, 31-38 convex portion, 39 (lower plate 30) lower surface, 48 controller, 49 motor, 40 speed reduction mechanism, 41 driven gear, 42 drive gear, 43 drive shaft, 48 controller, 50 Rolling prevention recess, 51-58 recess, 59 artificial grass, 62 (dome-shaped) shaft member, O (shaft member) apex, O (same sign) center, 90 cam body, 91-93 cam surface, 99 parts 100, golf practice variable tilt table (main tilt table), D1 first diameter, D2 second diameter, E first concentric circle, F second concentric circle, G (the upper surface 29 of the turntable 20 and the lower surface of the upper plate 30) 39) clearance, R third concentric circle, Z vertical axis, α rotation phase, θ swing angle

Claims (7)

A variable tilting table for golf practice in which the direction and angle of tilting can be freely set,
The bottom base,
A vertical axis set on the base;
An upper plate that swingably engages with the longitudinal axis to form the uppermost layer;
A turntable that is rotatable with respect to the longitudinal axis and forms an intermediate layer interposed between the upper plate and the base;
A motor capable of applying rotational force to the turntable and stopping at an arbitrary rotational phase;
A cam mechanism that allows the gap between the upper surface of the turntable and the lower surface of the upper plate to be freely changed; and
With
The cam mechanism is formed so as to widen the gap at one end of the diameter of the turntable and to narrow the gap at the other end ,
The cam mechanism is
A cam body having a cam surface formed on the lower surface of the upper plate along a first concentric circle centered on the vertical axis and having a shape that varies the width of the gap;
A cam wheel that rolls on the cam surface and varies the gap freely;
At least a pair of non-cam wheels formed along a second concentric circle centered on the longitudinal axis and rolling on a plane other than the cam surface;
With
The cam wheels are respectively arranged at an apex angle and a base angle of an isosceles triangle inscribed in the first concentric circle,
A midline connecting the midpoint at the base of the isosceles triangle to the apex angle and the first diameter are matched,
Setting a second diameter perpendicular to the first diameter;
The non-cam wheels are arranged in pairs at intersections of the second concentric circles and the second diameter;
Variable tilt table for golf practice. The first concentric circle is close to the outer periphery of the turntable, and the second concentric circle is set on the inner peripheral side thereof,
The cam wheel is disposed on the upper surface of the turntable,
The variable tilting table for golf practice according to claim 1 . In the cam body, trapezoidal convex portions and inverted trapezoidal concave portions are continuously and alternately formed along the first concentric circles.
The variable tilting table for golf practice according to claim 1 or 2 . The convex portion and the concave portion are vertically symmetrical in the shape of the contour viewed from the orthogonal direction of the vertical axis.
The variable tilting table for golf practice according to claim 3 . The turntable is given a rotational force from the motor via a speed reduction mechanism,
The speed reduction mechanism includes a driven gear engraved on a third concentric circle centered on the vertical axis;
A drive gear meshing with the driven gear;
A drive shaft that transmits the power of the motor to the drive gear;
Configured with at least,
The variable inclination stand for golf practice in any one of Claims 1-4 . Artificial turf is attached to the upper surface of the upper plate, and the artificial turf has any position of grid-like intersections, staggered intersections, and intersections where radial intersecting lines intersect equidistant concentric circles. Provided with a rolling prevention recess for a plurality of golf balls,
The variable tilting table for golf practice according to any one of claims 1 to 5 . A controller of the motor is disposed near the base or on the upper surface of the upper plate, and an AC100V power source is obtained to control the driving of the motor.
The variable tilting table for golf practice according to any one of claims 1 to 6 .

Images