US20230330503A1

US20230330503A1 - Shock absorption net for golf practice

Info

Publication number: US20230330503A1
Application number: US18/024,874
Authority: US
Inventors: Kang Min CHOI
Original assignee: X Golf Co Ltd
Current assignee: X Golf Co Ltd
Priority date: 2020-09-14
Filing date: 2021-09-06
Publication date: 2023-10-19
Also published as: KR102436056B1; KR20220035742A; WO2022055195A1

Abstract

The present invention relates to a shock absorption net for golf practice, and more specifically, the shock absorption net, by having a shock absorption skirt installed in a net part forming a top surface, prevents a golf ball flying from a golfer's swing from directly hitting an upper portion of a target cloth or an upper back frame having elasticity. The shock absorption net for golf practice of the present invention, when used, pre-emptively prevents a ball from directly clashing with the upper back frame or the target cloth and bouncing back with a strong force, and thus can protect a golfer from risks associated therewith and allow same to practice golf safely.

Description

TECHNICAL FIELD

The present invention relates to a shock absorption net for golf practice, and more particularly, to a shock absorption net for golf practice, in which a shock absorption skirt is installed on a net part constituting a top surface, so as to fundamentally prevent a golf ball flying away by a golfer's swing from causing danger to the golfer by bouncing out by repulsive force after colliding against an upper portion of a rear upper frame or a target cloth having elasticity, thereby enabling the golfer to perform golf practice in safety.

BACKGROUND ART

In recent years, golf becomes popular globally while many people enjoy golf for leisure or sports.
With an increase in the demand of golf, many people go to a golf driving range to perform practice. In particular, an indoor golf course and a screen golf driving range, in which people can enjoy golf regardless of season or weather, receive a favorable evaluation in that they drawn the popularization of golf, and are becoming more and more advanced. Moreover, the public can comfortably go to the indoor golf course and the screen golf driving range in price.
However, there are skilled persons and beginners among users who visit a golf driving range, and even a skilled person does not always accurately hit a golf ball. So, in a case in which golfers use a net for golf practice, lots of accidents still occur.
In order to prevent such accidents, Korean Patent No. 2134608 discloses a safety net for preventing a golf ball that a golfer hit from giving danger by bouncing out toward the front of a net directly after the ball collides against a screen.
However, since the safety net according to the conventional art makes the golf ball bouncing out of the net at various angles, it is not possible to safely protect the golfer, it still has the existing problem in that the golfer cannot be protected in safety.
Accordingly, the present invention proposes a shock absorption net for golf practice capable of protecting a golfer from a golf ball hit by the golfer and allowing the golfer to perform golf practice in safety.

PATENT LITERATURE

Patent Documents

(Patent Document) Korean Patent No. 10-2134608

DISCLOSURE

Technical Problem

An objective of the present invention is to provide a shock absorption net for golf practice, in which a shock absorption skirt is installed on a net part constituting a top surface, so as to prevent a golf ball hit by a golfer's club from directly colliding against an upper portion of a rear upper frame or a target cloth, thereby fundamentally preventing the golf ball from causing danger to the golfer by repulsive force when the golf ball colliding against the upper end of the frame or the target cloth.
Technical objects to be achieved by the present invention are not limited to the above-described objects and other technical objects that have not been described will be evidently understood by those skilled in the art from the following description.

Technical Solution

To accomplish the above-mentioned objects, according to the present invention, there is provided a shock absorption net for golf practice including: a frame part constituting a frame of a top surface, a side surface, and a rear surface; net parts respectively forming the top surface, the side surface, and the rear surface by surrounding the frame part; a target cloth which is a target for a golf ball and is provided inside the net parts; and a shock absorption skirt installed on the net part forming the top surface to prevent the golf ball hit by a golfer from directly colliding with an upper portion of the frame part or the target cloth having elasticity.
In this instance, the frame part has a rectangular shape or a rectangular shape having different lengths at both sides.
Here, a distance (y) between the net part forming the rear surface and the shock absorption skirt was 10 to 15% of a distance (D) between the position of the ball before hitting and the net part forming the rear surface.
In addition, in a case in which the distance between the net part forming the rear surface and the shock absorption skirt is y, a net height is H, and a distance between the position of the ball before hitting and the net part forming the rear surface is D, a length x of the shock absorption skirt is within a range of
$1.02 y \frac{H}{D} DxD 1.3 y \frac{H}{D} .$

Advantageous Effects

According to the present invention, the shock absorption net for golf practice which includes the shock absorption skirt installed on a net part constituting a top surface can fundamentally prevent a golf ball hit by swing of a golf club from colliding against the upper portion of the rear upper frame or the target cloth having elasticity, thereby fundamentally preventing a golfer from getting wound by the golf ball bouncing out by a strong repulsive force of the upper portion of the rear upper frame or the target cloth.
The shock absorption net for golf practice which includes the shock absorption skirt installed on a net part constituting a top surface can protect a golfer from a golf ball flying by the golf club so that the golfer can perform golf practice in safety.
The effects of the present invention are not limited to the above-mentioned effects and further effects not described above will be clearly understood by those skilled in the art.

DESCRIPTION OF DRAWINGS

FIG. 1 is a perspective view illustrating a structure of a shock absorption net for golf practice according to an embodiment of the present invention.

FIG. 2 is a view illustrating a golf practice net according to another embodiment of the present invention.

FIG. 3 is a side view illustrating a structure of the shock absorption net for golf practice according to the present invention, and an enlarged view of a shock absorption skirt according to the present invention.

FIG. 4 is a view for depicting the shock absorption skirt according to the present invention.

FIG. 5 is a view for depicting an embodiment according to the present invention.

MODE FOR INVENTION

The present invention may have various modifications and may have various embodiments, and particular embodiments of the present invention will be illustrated in the attached drawings and described in this specification in detail. It should be understood, however, that there is no intent to limit example embodiments of the invention to the particular forms disclosed, but on the contrary, example embodiments of the invention are to cover all modifications, equivalents, and alternatives falling within the technical idea and scope of the present invention.
In the drawings, the exemplary embodiments of the present invention are not limited to the illustrated specific forms, but exaggerated for the purpose of clarity. Although specific terms are used in the present specification, this is used for the purpose of describing the present invention, and is not used to limit the scope of the present disclosure set forth in the meaning of meaning or the claims.
In the present specification, the term “and/or” is understood to include at least one of the constituent elements that are enumerated in the context. In addition, a singular form also includes a plural form unless particularly stated otherwise in the present specification. In addition, the word “comprises” and/or “comprising” used in the present specification will be understood to imply the inclusion of stated constituents, steps, operations, and elements but not the exclusion of one or more other constituents, steps, operations, elements, and devices.
In the description of the embodiments, the description that each layer (film), region, pattern or structure is formed “above/on” or “below/under” each substrate, layer (film), region, pad or pattern refers to both of being formed directly thereon or being formed by intervening another layer therebetween. The criteria for above/on or below/under of each layer will be described with reference to the drawings.
In addition, parts irrelevant to description are omitted in the drawings in order to clearly explain embodiments of the present invention. Similar parts are denoted by similar reference numerals throughout this specification. In addition, the term “unit” described in the specification refers to one unit or block for performing a specific function.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a perspective view illustrating a structure of a shock absorption net 100 for golf practice according to an embodiment of the present invention.
Referring to FIG. 1 , the shock absorption net 100 for golf practice according to an embodiment of the present invention includes: a frame part 200 which forms a frame for a top surface, a side surface, and a rear surface; net parts 300 which respectively form the top surface, the side surface, and the rear surface by surrounding the frame part 200; and a shock absorption skirt 400 installed on the net part 300 forming the top surface.
As illustrated in FIG. 1 , the frame part 200 may preferably have a hexahedral shape in which front the front side, the left side, the right side, and the rear side are connected to each other, but if necessary, may have any different shape. The frame part 200 includes a frame 210 forming the rear, a frame 220 forming the front, a frame 230 connecting an upper portion, and a frame 240 connecting a lower portion. Hereinafter, the frames are called a rear frame 210, a front frame 220, an upper frame 230, and a lower frame 240.
The rear frame 210 includes a pair of rear left and right vertical frames 211 and 212 vertically erected to be spaced apart from each other at a predetermined interval, and rear upper and lower horizontal frames 213 and 214 respectively installed at upper and lower ends of the rear left and right vertical frames 211 and 212 to connect the vertical frames. In addition, the rear left and right vertical frames 211 and 212 and the rear upper and lower horizontal frames 213 and 214 are connected to each other to form a rectangular frame.
The front frame 220 includes a front left vertical frame 221 installed on the front left side of the rear frame, a front right vertical frame 222 installed on the front right side of the rear frame, a front upper horizontal frame 223, and a front lower horizontal frame 224. The side upper frame 230 includes a side upper left frame 231 and a side upper right frame 232 connecting the upper ends of the front left and right vertical frames 221 and 222 and the upper ends of the rear left and right vertical frames 211 and 212. Further, the side lower frame 240 includes a side lower left frame 241 and a side lower right frame 242 connecting the lower ends of the front left and right vertical frames 221 and 222 and the lower ends of the rear left and right vertical frames 211 and 212.
In addition, the frame part 200 may be varied in length, width, and height according to a space for practicing golf, and the frames of the frame part may be detachably connected to each other by connection caps. The connection caps are generally provided to connect poles for a tent, and have already been widely used, so a detailed description of the structure thereof will be omitted.
Although the frame part 200 has, for instance, a hexahedral shape, there is no need for a golf driving range 100, in which a shock absorption skirt for golf practice is installed, to have a hexahedral shape. Even if the frame part 200 have a different shape, the principle of the present invention will be applied in the same way.
For example, FIG. 2 illustrates a golf practice net according to another embodiment of the present invention.
The frame having the structure illustrated in FIG. 2 has side upper and lower frames 230 and 240 having different right and left frame lengths. In such a structure, the front frame 220 is not parallel with the rear frame 210 but forms a diagonal line with the rear frame 210, so that a golf club does not collide with the front left vertical frame 221 even if a golfer swings the golf club, thereby maximizing convenience in use and safety of swing. Due to the structural merits, the golf practice net may be designed in such a way that a golf ball is located as close as possible to the golf practice net. Furthermore, such a structure can effectively prevent the golf ball hit by the golf club from turning outward from the net, thereby reducing the size of a practice space.
In this instance, as a test result of hitting golf balls with all kinds of golf clubs while changing the right apex angle of the front upper horizontal frame 223 to 60 degrees and 45 degrees, 100% safety with respect to all hits was secured, the minimum installation space was used, and the optimal right apex angle for hitting was 60 degrees. In case of the right apex angle of 45 degrees, it needed about 40% more in installation space than the right apex angle of 60 degrees.
Referring back to FIG. 1 , the net parts 300 are installed to form the top surface, the side surface, and the rear surface by surrounding the frame part 200, so as to block the golf ball hit by the golfer. That is, the net part 300 are installed inside the rear frame 210, the front frame 220, and the side upper and lower frames 230 and 240 to block the rear side, the left side and the right side except the front side, so that the golf ball does not fly out of the golf practice net part 300 but drops down inside the net parts 300 when the golfer hits the golf ball forward. Hereinafter, a net forming the top surface is called an upper net, a net forming the side surface is called a side net, and a net forming the rear surface is called a rear net. Additionally, the net part 300 may be wound around the frame part 200 by a wire or a Velcro tape to be fixed.
Typically, the rear upper horizontal frame 213 is made of a metallic material or a strong plastic material. In addition, the target cloth 310 is fixed on the upper net by a fixing hook or a Velcro tape at a regular interval in front of the rear net. A strong tensile force is applied to an upper portion of the fixed target cloth 310 by self-weight. Accordingly, in a case in which the hit golf ball collides with the rear upper horizontal frame 213, the ball may be bounced out by a strong impact. Repulsive force is applied on the upper portion of the target cloth since the lower portion cannot be lifted upward due to the length (weight) of the target cloth when the ball hits the upper portion, so the force cannot be absorbed. In addition, in a case in which the hit golf ball passes through a space between the upper net and the upper end of the target cloth 310 fixed to the upper net, the ball is bounced out by the strong impact because there is a large possibility that the passed golf ball collides with the rear upper horizontal frame 213. Finally, in a case in which the hit golf ball directly collides against the upper portion of the target cloth 310, the golf ball is bounced toward the golfer by a great repulsive force caused by the strong tensile force acting on the target cloth 310. In all such cases, there is a risk of injury to the golfer or people around the golfer.
The shock absorption skirt 400, which is a core component of the present invention, is configured to prevent the golf ball hit by the golfer from directly colliding with the upper portion of the rear upper horizontal frame 213 or the target cloth 310 having elasticity. If there is no shock absorption skirt 400, the golf ball hit by the golfer may directly collide with the upper portion of the rear upper horizontal frame 213 or the target cloth 310. So, the shock absorption skirt 400 is installed in order to fundamentally prevent the golf ball from bouncing out by repulsive force after colliding.
Additionally, the shock absorption net 100 for golf practice includes the target cloth 310 mounted to be spaced apart from the rear frame 210 as a target for a golf ball to relieve hitting shock of the golf ball. If the target cloth 310 is directly hung on the net, the target cloth 310 is damaged whenever the golfer hits a shot. Accordingly, it is good to detachably install the target cloth 310 by using rings or connection strings. If only the upper end of the target cloth 310 is fixed on the frame or all sides of the target cloth 310 are fixed on the frame, tensile force acts near the fixed frame very tightly. Due to such tensile force, when the hit ball collides with the target cloth 310 or the ring near the frame, the ball is bounced out by strong repulsive force, so the golfer or people around the golfer may be in danger. The shock absorption skirt 400 which is the core component of the present invention can prevent the ball from flying to the upper portion of the rear net or the target cloth 310 having elasticity and prevent the ball from being bounced out by repulsive force, thereby guarding the golfer from danger.
The shock absorption skirt 400 may be installed to be connected to the upper net, and may be installed to be spaced apart from the rear net.
FIG. 3 is a side view illustrating a structure of a golf driving range in which the shock absorption net 100 for golf practice according to the present invention is installed, and is an enlarged view of the shock absorption skirt 400.
The shock absorption net 100 illustrated in FIG. 3 has the same structure as the impact buffer net 100 for golf practice illustrated in FIG. 1 .
As illustrated in FIG. 3 , the shock absorption skirt 400 is vertically installed from the upper net, and is spaced apart from the rear net. Preferably, the shock absorption skirt 400 is spaced apart from the rear net in order to prevent the golf ball flying by a golfer's swing from colliding with the upper portion of the rear net or the target cloth 310 having elasticity.
It is necessary to calculate the optimum distance between the shock absorption skirt 400 and the golf net and the length of the shock absorption skirt 400 of the present invention according to the position of the golf ball before hitting.
In the present invention, in order to derive the optimal skirt position and length, many hitting tests were performed while changing the length and position of the skirt.
Since the collision position value of the hit ball is changed according to the position and length of the shock absorption skirt 400, as a result that the optimal condition was derived while changing the installation position of the shock absorption skirt 400, the result value was the best when the shock absorption skirt 400 was spaced apart from the target cloth 310 at a distance of 20 to 40 cm.
Therefore, hereinafter, the configuration of the present invention and the effect thereof will be described in more detail with reference to another net having a different type according to another embodiment of the present invention while varying the distance between the shock absorption skirt 400 and the target cloth 310 within a range of 20 to 40 cm. However, the present embodiment is to describe the present invention in more detail, and the scope of the present invention is not limited to these embodiments.

Embodiment 1

As illustrated in FIG. 1 , the net has a rectangular parallelepiped shape and has a specific size illustrated in FIG. 5A. In FIG. 5 , the upper view is a perspective view, and the lower view is a plan view. As illustrated in the drawing, an angle between the center of the front upper horizontal frame 223 and the ball before hitting was 50 degrees, a distance between the rear net and the ball before hitting was 4450 mm, and the height of the net was 3000 mm.

Embodiment 2

In the present embodiment, as illustrated in FIG. 2 , the net has an apex angle between the front upper horizontal frame 223 and the side upper right frame 232, which was 60 degrees. The left and right frames of the net are different in length from each other, and the size of the net is illustrated in FIG. 5B. As illustrated in the drawing, the angle between the center of the front upper horizontal frame 223 and the ball before hitting was 64 degrees, the distance between the rear net and the ball before hitting was 2950 mm, and the height of the net was 3000 mm.

Test Example 1

The shock absorption skirt 400 was installed to be spaced apart from the target cloth 310 at a distance of 20 to 40 cm. A golfer hit golf balls 200 times with different forces in different directions using various clubs to strike the target cloth 310 while increasing the length of the shock absorption skirt 400 by 5 cm in order to confirm whether the hit ball was bounced out. In this case, the distance between the target cloth 310 and the rear net was 10 cm.
As a test result according to the Embodiment 1, it was confirmed that it was the safest when the shock absorption skirt 400 was spaced apart from the target cloth 310 at a distance of 40 cm, and the ball was not bounced out when the length of the shock absorption skirt 400 was in the range of 34 to 45 cm.
In addition, as a result that the same test was applied to the Embodiment 2, it was confirmed that it was the safest when the shock absorption skirt 400 was spaced apart from the target cloth 310 at a distance of 30 cm, and the ball was not bounced out when the length of the shock absorption skirt 400 was in the range of 42 to 55 cm.
In this instance, when the distance between the rear net and the shock absorption skirt 400 is y, and the distance between the position of the ball before hitting and the rear net is D as illustrated in FIG. 4 , it is preferable that y has a value corresponding to 10 to 25% of the value D. In addition, as illustrated in FIG. 4 , when the length of the shock absorption skirt 400 is x and the height of the rear net is h, the relational expression of x and y may be geometrically represented by the following Equation 1.
$\begin{matrix} x^{\min} = y \frac{H}{D} & [Equation 1] \end{matrix}$
Here, X^minrepresents the minimum length of the shock absorption skirt 400 that prevents the hit ball from directly striking the rear upper back upper horizontal frame 213 of the rear net.
In this instance, it is preferable that the length x of the mm shock absorption skirt 400 is 2 to 30% longer than X^min, i.e., within a range of
$1.02 y \frac{H}{D} DxD 1.3 y \frac{H}{D} .$
The range is a range of the shock absorption skirt 400 to prevent the hit ball from colliding with the upper portion of the target cloth 310 having high tensile force, and was optimized through various tests. As a result of the various tests, if the length x was shorter than the above range, it was confirmed that the shock absorption skirt 400 was rolled by the impact of the ball when the golf ball collided with the shock absorption skirt 400. Furthermore, if the length x was longer than the above range, it was confirmed that the golf ball colliding with the upper portion of the shock absorption skirt 400 was bounced out of the net by a great repulsive force at the upper portion of the shock absorption skirt 400 due to self-weight of the shock absorption skirt 400.
Additionally, if the shock absorption skirt is smaller than the range, the hit golf ball passes through the space between the upper net and the upper end of the target cloth 310 fixed on the upper net or directly collides with the upper portion of the target cloth 310 having high tensile force and is bounced forward by repulsive force.
In addition, based on the above test result, it was found that it was the most preferable that the the distance y between the rear net and the shock absorption skirt 400 was 10 to 15% of the distance D between the position of the ball before hitting and the rear net part.
Meanwhile, as illustrated in FIG. 3 , as an embodiment, the shock absorption skirt 400 may be fixed not to be easily separated by being sewed in the form of a
shape after putting cloth over on the upper net. Moreover, as another fixing method, rings are provided or connection strings are attached so that the shock absorption skirt 400 is installed detachably.
While the present invention has been described as above, it will be appreciated by those skilled in the art that the present invention can be realized in other forms while maintaining the technical spirit and essential features of the present invention.
Although the scope of the present invention will be defined by the appended claims, the scope of the present disclosure is defined by the appended claims, rather than the above description, and ail changes or modifications derived from the meaning, scope and equivalents of the appended claims should be interpreted as falling within the scope of the present disclosure.

SEQUENCE LIST

- 100: Shock absorption net for golf practice
- 200: Frame part
- 210: Rear frame
- 211: Rear left vertical frame 212: Rear right vertical frame
- 213: Rear upper horizontal frame 214: Rear lower horizontal frame
- 220: Front frame
- 221: Front left vertical frame 222: Front right vertical frame
- 223: Front upper horizontal frame 224: Front lower horizontal frame
- 230: Side upper frame
- 231: Side upper left frame 232: Side upper right frame
- 240: Side lower frame
- 241: Side lower left frame 242: Side lower right frame
- 300: Net part 310: Target cloth
- 400: Shock absorption skirt
- x: Length of shock absorption skirt
- y: Distance between shock absorption skirt and rear net
- D: Distance between position of ball before hitting and rear net
- H: Height of rear net

Claims

1. A shock absorption net for golf practice, comprising:

a frame part constituting a frame of a top surface, a side surface, and a rear surface;

net parts respectively forming the top surface, the side surface, and the rear surface by surrounding the frame part;

a target cloth which is a target for a golf ball and is provided inside the net parts; and

a shock absorption skirt installed on the net part forming the top surface to prevent the golf ball hit by a golfer from directly colliding with an upper portion of the frame part or the target cloth having elasticity.

2. The shock absorption net according to claim 1, wherein the frame part has a rectangular shape or a rectangular shape having different lengths at both sides.

3. The shock absorption net according to claim 1, wherein a distance (y) between the net part forming the rear surface and the shock absorption skirt was 10 to 15% of a distance (D) between the position of the ball before hitting and the net part forming the rear surface.

4. The shock absorption net according to claim 3, wherein in a case in which the distance between the net part forming the rear surface and the shock absorption skirt is y, a net height is H, and a distance between the position of the ball before hitting and the net part forming the rear surface is D, a length x of the shock absorption skirt is within a range corresponding to the following [Equation 2]:

\begin{matrix} 1.02 y \frac{H}{D} DxD 1.3 y \frac{H}{D} . & [Equation 2] \end{matrix}