Patent Grant
11484761
The present application claims priority to Korean Patent Application No. 10-2020-0022116, filed Feb. 24, 2020, the entire contents of which is incorporated herein for all purposes by this reference.
The present disclosure relates generally to a portable magnification angle adjuster for golf putting. More particularly, the present disclosure relates to a portable magnification angle adjuster for golf putting, in which irrespective of the position of a rotation weight, the beauty and portability of the magnification angle adjuster is improved, and the precision of the measurement of a golf green slope is prevented from decreasing.
Generally, a putting motion on a golf green occurs at a final stage in which a golfer puts a golf ball into a hole cup, and is one of motions which require the golfer's concentration and accuracy.
Meanwhile, since the slope surface of a golf course green is designed to have various types of inclinations, it is necessary to accurately determine the slope of a place on which a golf ball is placed, the slope of the hole cup, and the slope between the hole cup and the golf ball so as to increase the success rate of putting. However, generally, golfers are not accurate in determining the slope of a golf green, and thus are not accurate in putting, either. Accordingly, there are several products on the market that can easily measure the slope of the golf green as an auxiliary means for increasing precision when determining the slope of the golf green during putting. However, a conventional product by which the slope of a golf green can be measured has a very low efficiency in improving the precision of putting since the direction of the hole cup actually marked by the conventional product and the center position of the hole cup are inconsistent.
In order to solve this problem, the present applicant proposed “Direction indication device for golf putting” disclosed in Korean Patent No. 10-1774012 as illustrated in
Meanwhile, although the actual inclination angle of a golf green is the same, it is necessary to minutely adjust a putting magnification angle to suit a putting habit of each golfer according to the individual putting characteristics of the golfer. That is, as illustrated in
However, in the conventional direction indication device for golf putting, threads are formed on the entire outer circumferential surface of the angle adjustment bar 40, so during the movement of the first rotation cam 20 due to the rotation of the angle adjustment bar 40, the angle adjustment bar 40 moves together with the first rotation cam 20. Accordingly, in the conventional direction indication device for golf putting, during the rotation of the knob 10 for the movement of the first rotation cam 20, the angle adjustment bar 40 protrudes to the outside, so the exterior beauty of the direction indication device may deteriorate, and when the direction indication device is carried, the protruding angle adjustment bar 40 interferes with a user's body or trouser pocket, thereby deteriorating the portability of the direction indication device.
In addition, when the golfer moves the first rotation cam 20 to adjust the position of the first rotation cam 20, the first rotation cam 20 may touch a first support 50 due to the excessive movement of the first rotation cam 20. Accordingly, the first rotation cam 20 may not efficiently rotate due to the friction of the first rotation cam 20 with the first support 50, so the precision of slope angle measurement by the direction indication device for golf putting may be decreased.
(Patent Document 1) Korean Patent No. 10-1774012
Accordingly, the present disclosure has been made keeping in mind the above problems occurring in the related art, and the present disclosure is intended to propose a portable magnification angle adjuster for golf putting, in which a knob and a rotation weight are screwed to each other, and threads are formed only on a portion of a push puller to move the knob and the rotation weight, whereby the knob can move the rotation weight without protruding from a casing, and the moving distance of the rotation weight is limited such that the rotation weight is efficiently rotated irrespective of the position of the rotation weight.
In order to achieve the above objective, according to one aspect of the present disclosure, there is provided a portable magnification angle adjuster for golf putting, the magnification angle adjuster including: a casing having an inner space formed therein and having an insertion hole formed at a side of the casing toward the inner space; an indication hand shaft-coupled to the casing such that the indication hand rotates in the inner space of the casing, the indication hand including a longitudinal pin hole; a knob including: a spiral shaft inserted into the inner space of the casing through the insertion hole; and a dial formed at an end part of the spiral shaft and located at an outside of the casing, the dial having a diameter larger than a diameter of the insertion hole; and a rotation weight coupled to the spiral shaft in the inner space of the casing such that the rotation weight rotates relative to the spiral shaft in opposite circumferential directions of the spiral shaft, and having a rotation pin formed in the rotation weight, the rotation pin being located at the longitudinal pin hole of the indication hand, wherein the spiral shaft and the rotation weight are screwed to each other such that the rotation weight is moved on the spiral shaft through a rotation of the dial, and threads of the rotation weight and threads of the spiral shaft are formed on a portion of the rotation weight and a portion of the spiral shaft, respectively, such that during the rotation of the dial, the rotation weight moves within a range in which the threads of the rotation weight and the threads of the spiral shaft are engaged with each other.
In this case, a hollow center hole may be formed in the rotation weight, the rotation weight may have a through hole formed through each of opposite sides of the hollow center hole in a coupling direction of the rotation weight to the spiral shaft, and the rotation weight may further include: a push puller arranged in the hollow center hole and configured to have a width such that a gap occurs between the push puller and the hollow center hole and to have a screw hole formed in the push puller such that the screw hole communicates with the through hole of the rotation weight, so that the push puller is screwed to the spiral shaft.
In this case, the through hole of the rotation weight may include a longitudinal lower hole corresponding to the screw hole of the push puller, and an upper hole having a circular shape formed above the longitudinal lower hole, and an inner through hole corresponding to the upper hole may be formed above the screw hole of the push puller, wherein the magnification angle adjuster may further include: a guide shaft having a first end part fixed to the casing and having a second end part inserted into the inner through hole of the push puller through the upper hole of the rotation weight such that the guide shaft guides a movement of the rotation weight during a movement of the push puller caused by a rotation of the dial.
The threads of the spiral shaft may be formed on an outer circumferential surface of the spiral shaft and threads may be formed in the screw hole of the push puller, wherein the threads of the spiral shaft and the threads of the screw hole may be formed only on a portion of the outer circumferential surface of the spiral shaft and in a portion of the screw hole, respectively, such that the movement of the rotation weight due to the threads of the spiral shaft and the threads of the push puller engaged with each other is limited.
In addition, in the threads of the spiral shaft, threads formed on a center part of the spiral shaft may be configured to have diameters larger than diameters of threads formed on opposite end portions of the spiral shaft in a longitudinal direction of the spiral shaft.
The portable magnification angle adjuster for golf putting according to the present disclosure has the following effects.
First, in the portable magnification angle adjuster for golf putting, the spiral shaft is screwed only to the push puller inside the casing, and freely rotates in the casing, whereby the knob including the spiral shaft is prevented from protruding to the outside of the casing. Accordingly, in the portable magnification angle adjuster for golf putting, the spiral shaft is prevented from protruding to the outside of the casing, thereby preventing the decrease of the beauty and portability of the portable magnification angle adjuster which may occur due to interference of the spiral shaft with a user's body or trouser pocket when the portable magnification angle adjuster is carried.
Second, in the portable magnification angle adjuster for golf putting, when the dial is turned, the spiral shaft is rotated, and due to the screw hole of the push puller coupled to the spiral shaft, the push puller is moved, so the rotation weight axially coupled to the guide shaft is also moved in cooperation with the push puller. In this case, threads formed on the outer circumferential surface of the spiral shaft are configured as threads tapered toward opposite sides of the center part of the spiral shaft relative to threads of the center part and are engaged with threads formed in the screw hole of the push puller. The tapered threads are disengaged from the threads formed in the screw hole of the push puller at the opposite ends thereof, so the moving distance of the push puller and the moving distance of the rotation weight can be limited, and even in the state in which the push puller is disengaged from the spiral shaft, the rotation of the rotation weight can be efficiently performed. In addition, even after the spiral shaft is disengaged from the push puller due to the tapered threads of the spiral shaft, the recoupling of the spiral shaft to the screw hole of the push puller can be easily performed by turning the knob in the contrary direction. Accordingly, in the portable magnification angle adjuster for golf putting, the rotation of the rotation weight can be efficiently performed, thereby consistently maintaining the precision of golf putting.
The above and other objectives, features, and other advantages of the present disclosure will be more clearly understood from the following detailed description when taken in conjunction with the accompanying drawings, in which:
Unless otherwise defined, terms or words used in the specification and claims are not limited to meanings that are commonly understood or are defined in dictionaries, and should be interpreted as having meanings and concepts that are consistent with the context of the present disclosure, based on the principle that an inventor may properly define concepts of words so as to describe his or her invention in the best mode.
Hereinafter, a portable magnification angle adjuster for golf putting according to the exemplary embodiment of the present disclosure will be described with reference to
According to the portable magnification angle adjuster for golf putting, the slope of a golf green is easily measured to increase the precision of putting by a golfer, and during the rotation of a knob for adjusting the position of a rotation weight, the knob is prevented from protruding from the casing. Accordingly, the portable magnification angle adjuster for golf putting prevents exterior beauty thereof from deteriorating and does not cause discomfort even when the portable magnification angle adjuster is carried.
As illustrated in
The casing 100 constitutes the exterior of the portable magnification angle adjuster for golf putting, and has inner space 110 in which each component is installed. The casing 100 is preferably formed to have a circular shape, and a side thereof is open such that the bottom of the inner space 110 is seen. In this case, an angle display panel 111 is installed at the upper part of the inner space 110, and is configured such that the golfer can visually check the rotation angle of the indication hand 200. As illustrated in
A transparent window 120 is installed at a side of the casing 100 and the golfer can look into the angle display panel 111 through the transparent window 120. Insertion holes 130 are formed at a side of an outer circumferential surface of the casing 100. The insertion holes 130 are holes through which the spiral shaft 410 and the guide shaft 500 of the knob 400 to be described later pass, and are formed as simple through holes to allow the inside and outside of the casing 100 to communicate with each other.
While the indication hand 200 rotates according to the rotation of the rotation weight 300, that is, according to the slope of the casing 100, the indication hand 200 is configured to indicate the scale of the angle display panel 111 of the casing 100. As illustrated in
The rotation weight 300 functions to rotate the indication hand 200 while the rotation weight 300 rotates in the inner space 110 of the casing 100 according to the slope of a golf course green on which the casing 100 is placed. The rotation weight 300 allows the rotating force thereof to be transmitted to the indication hand 200 through the lower end pin 220 and the vertical shaft 210 such that the rotation weight 300 rotates the indication hand 200 in cooperation with the indication hand 200. The rotation weight 300 is provided to be rotatable while the rotation weight 300 is axially coupled to the guide shaft 500 to be described later. The rotation weight 300 has a center of gravity located at the lower end of the guide shaft 500 such that the rotation weight 300 is efficiently rotated, and is preferably formed to incline toward the opposite sides of the rotation weight 300. In addition, as illustrated in
The push puller 350 is inserted to and installed in the center hole 320 of the rotation weight 300. The push puller 350 functions as a medium moving the rotation weight 300 while being axially coupled to the guide shaft 500. The push puller 350 is located in the center hole 320 of the rotation weight 300, and a through hole 351 is formed in the push puller 350 in a height direction thereof. The through hole 351 is composed of a screw hole 351a and an inner through hole 351b, wherein the screw hole 351a corresponds to the lower hole 331 of the rotation weight 300. The screw hole 351a is formed to have a circular shape, and has threads formed therein to be screwed to the spiral shaft 410 to be described later. The inner through hole 351b is formed above the screw hole 351a, and corresponds to the upper hole 332 of the rotation weight 300. The inner through hole 351b is axially fitted over the guide shaft 500 and is configured to help the axial movements of the push puller 350 and the rotation weight 300 along the guide shaft 500. The inner through hole 351b is provided to have a shape of a simple through hole. Meanwhile, the push puller 350 is formed to have a width smaller than the width of the center hole 320. Accordingly, as illustrated in
The knob 400 functions to rectilinearly move the rotation weight 300. Specifically, the knob 400 functions to move the rotation weight 300 forward or backward by being rotated. The knob 400 includes the spiral shaft 410, a dial 420, and removal prevention rings 430. The spiral shaft 410 is screwed to the screw hole 351a of the push puller 350 through the casing 100. Threads are formed on the spiral shaft 410, and are not formed on the entirety of the spiral shaft 410, but are formed only on a portion of the spiral shaft 410 as illustrated in
Meanwhile, as described above, the spiral shaft 410 of the knob 400 and the push puller 350 are screwed to each other, and due to the rotation of the spiral shaft 410, the push puller 350 moves rectilinearly along the spiral shaft 410, and the rotation weight 300 also moves axially in cooperation with the push puller 350. In this case, as illustrated
The range of the threads formed on the spiral shaft 410 and in the screw hole 351a, respectively, is a range in which the rotation weight 300 is allowed to move such that the rotation weight 300 does not touch the removal prevention ring 430 coupled to each of the opposite end parts of the spiral shaft 410. In a case in which the rotation weight 300 touches the removal prevention ring 430 by being moved forward or backward, friction between the rotation weight 300 and the removal prevention ring 430 occurs during the rotation of the rotation weight 300, so the rotation of the rotation weight 300 is not efficiently performed. Accordingly, it is difficult to precisely measure the slope of a golf green through the indication hand 200. Accordingly, before the rotation weight 300 touches the removal prevention ring 430 during the movement of the rotation weight 300, the threads of the spiral shaft 410 and the threads of the screw hole 351a engaged with each other are disengaged from each other, so despite the continuous rotation of the knob 400, the rotation weight 300 can be prevented from being further moved.
The guide shaft 500 functions to allow the rotation weight 300 to be moved in the rectilinear course due to the rotation of the knob 400. As illustrated in
Hereinafter, the assembly and operation of the portable magnification angle adjuster for golf putting having the above configuration will be described.
While a side of the casing 100 is open, an operator shaft-couples the indication hand 200 to an upper end of the angle display panel 111 located at the inner upper end of the casing 100, and while the spiral shaft 410 and the guide shaft 500 of the knob 400 are fitted to the insertion holes 130 of the casing 100, the rotation weight 300 is installed in the inner space 110. The operator locates the rotation pin 340 of the rotation weight 300 in the pin hole 221 of the lower end pin 220, and screws the spiral shaft 410 to the screw hole 351a of the push puller 350 located in the center hole 320 of the rotation weight 300. In this process, the operator performs fitting the inner through hole 351b over the guide shaft 500. Next, the operator couples the transparent window 120 to an open side of the casing 100, so the assembly of the portable magnification angle adjuster for golf putting is completed.
In the portable magnification angle adjuster having the above configuration, the push puller 350 is axially coupled to the guide shaft 500 and moves according to the rotation of the spiral shaft 410, so the rotation weight 300 may also move and rotate in cooperation with the push puller 350. Accordingly, when the casing 100 is tilted to the right, the rotation weight 300 is also rotated to the right relative to the guide shaft 500. While the rotation weight 300 rotates, the rotation pin 340 of the rotation weight 300, which is located in the pin hole 221, rotates the lower end pin 220, and the indication hand 200 is rotated by the vertical shaft 210, whereby the indication hand 200 indicates the scale of the angle display panel 111 indicating the slope (inclination) of a golf green. Next, a golfer can determine the slope of a golf green and put a golf ball in direction indicated by the indication hand 200 to increase a putting success rate.
Meanwhile, due to golfers' putting characteristics, the slope of a golf green cannot be the same putting condition suitable for all the golfers, and depending on each of the golfers' putting characteristic, the inclination value of the golf green can be adjusted to match the golfer's putting stroke. To this end, a golfer may rotate the knob 400 to adjust the magnification of the rotation angle of the indication hand 200 indicating the slope of a golf green. That is, the golfer can adjust the magnification of the rotation angle of the indication hand 200 by adjusting the position of the rotation weight 300 in a forward/reverse direction while rotating the spiral shaft 410 by rotating the dial 420 of the knob 400. In this case, in the knob 400, the spiral shaft 410 is coupled to the screw hole 351a of the push puller 350 inside the inner space 110 of the casing 100, and is simply coupled to the insertion hole 130 of the casing 100, so due to the removal prevention ring 430 of the spiral shaft 410 located at the inner surface of the casing 100, the dial 420 rotates idly at the insertion hole 130 of the casing 100 despite the rotation of the dial 420 by the golfer. That is, in the portable magnification angle adjuster for golf putting, despite the rotation of the knob 400, the knob 400 is prevented from protruding from the casing 100, so the portable magnification angle adjuster prevents the exterior beauty thereof from deteriorating and does not cause discomfort even when the golfer carries the portable magnification angle adjuster.
Meanwhile, when the forward or backward movement of the rotation weight 300 is excessively performed, the engagement of the threads of the push puller 350 with the threads of the spiral shaft 410 is released, so the forward or backward movement of the rotation weight 300 no longer occurs despite the rotation of the knob 400. That is, in the portable magnification angle adjuster for golf putting, the excessive movement of the rotation weight 300 is limited, and thus the rotation weight 300 is prevented from being in contact with the removal prevention ring 430 installed at each of the opposite end parts of the spiral shaft 410, so the rotation of the rotation weight 300 can be efficiently performed. Accordingly, the portable magnification angle adjuster for golf putting allows the precision of the slope angle measurement of a golf green to be consistently maintained.
As described so far, in the portable magnification angle adjuster for golf putting according to the present disclosure, during the rotation of the knob 400 for changing the position of the rotation weight 300, the knob 400 is configured to be prevented from protruding from the casing 100, so the beauty of the exterior of the portable magnification angle adjuster is prevented from deteriorating, and the portability thereof is increased. In addition, in the portable magnification angle adjuster for golf putting, the excessive movement of the rotation weight 300 due to the rotation of the knob 400 is limited, so the rotation weight 300 is prevented from interfering with neighboring parts and the rotation of the rotation weight 300 is efficiently performed, whereby the precision of the measurement of a golf green slope can be consistently maintained.
As described above, the portable magnification angle adjuster for golf putting of the present disclosure is described in detail through the embodiment, but it is obvious to those skilled in the art that various changes and modifications are possible within the scope of the technical spirit of the present disclosure, and it is natural that such changes and modifications belong to the range of the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2020-0022116 | Feb 2020 | KR | national |
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| 994521 | Jacobs | Jun 1911 | A |
| 5038489 | Muehlenbein | Aug 1991 | A |
| 5662535 | Smith | Sep 1997 | A |
| 5792015 | Hoyt | Aug 1998 | A |
| 10293236 | Uhm | May 2019 | B2 |
| 20060073916 | Lin | Apr 2006 | A1 |
| Number | Date | Country |
|---|---|---|
| 203837697 | Sep 2014 | CN |
| 101484550 | Jan 2015 | KR |
| 10-1774012 | Sep 2017 | KR |
| Number | Date | Country | |
|---|---|---|---|
| 20210268357 A1 | Sep 2021 | US |
