KR200492305Y1 - Tension-adjustable sports racket - Google Patents

Abstract

The present invention relates to a sports racket that allows the tension of the string installed on the racket to be arbitrarily adjusted. In a sports racket having a rim in which the string is hung in zigzag, a roller wound around the string is rotatably mounted at each direction change point of the rim where the direction of the string is changed, and one end of the string is It is fixed to the rim, the other end is connected to a winder unit provided in the handle of the racket, and presents a sports racket in which the tension of the string installed on the rim is adjusted according to the operation of the winder unit.

Description

Tension-adjustable sports racket {Tension-adjustable sports racket}

The present invention relates to a sports racket that allows the tension of the string installed on the racket to be arbitrarily adjusted.

In general, a racket is used to hit the air or a shuttlecock in sports events such as squash, tennis, and badminton, and the head of the racket is woven in a horizontal and vertical direction to form a net. At this time, when hanging the string on the racket, a net is formed by pulling the string, thereby giving the net an appropriate elasticity. Depending on the degree of elasticity of the net, the repulsive force of hitting the ball varies, and the amount of impact delivered to the wrist and the like in handling the racket varies. Therefore, it is desirable to use a racket equipped with a net of tension suitable for the person using the racket according to the physical ability and tendency of the person using the racket.

Nevertheless, most people purchase a ready-made racket with a pre-installed net, and use the racket without any adjustment of the net tension. Most of the rackets are made based on the body of an adult, so they are not suitable for people with poor physical ability.

On the other hand, in order to adjust the net tension of a racket that is generally distributed, there is a problem in that the strings already installed are discarded as they are. In addition, even if you try to adjust the elasticity of the net after replacing the net, there is a hassle of having to change the string again.

In order to solve this problem, Korean Patent Laid-Open No. 10-2012-0013491 and Korean Patent No. 10-1592151 propose a technique for adjusting the tension of the net by pulling a string. Although such a conventional technique is suggested to control the tension of the net, the row mounted through the rim of the racket multiple times passes through the rim and changes direction several times, and the area of friction with the hole of the rim increases. Therefore, there is a problem that the tension of the entire net is not controlled by just pulling one end of the string.

Republic of Korea Patent Publication No. 10-2012-0013491 (2012.02.15) Korean Patent Registration No. 10-1592151 (2016.01.29)

The present invention intends to allow the user to arbitrarily adjust the tension of the string hung on the racket to adjust the elasticity of the racket net to a desired level.

In addition, the detailed objectives of the present invention will be clearly understood and understood by experts or researchers in this technical field through the detailed contents described below.

In order to solve the above problem, the present invention is an embodiment in a sports racket having a rim in which the string is zigzag, and a roller wound around the string at each direction change point of the rim where the direction of the string is changed It is mounted to be rotatable, and one end of the string is fixed to the rim, and the other end is connected to a winder unit provided in the handle of the racket, so that the tension of the string installed on the rim according to the operation of the winder unit We propose a sports racket capable of adjusting tension, characterized in that it is adjusted.

Further, the roller has a shape of a concave intermediate portion in contact with the string, and the rim has a roller seat in which the upper and lower ends of the roller are partially accommodated, and each of the roller seats has a diameter greater than that of the upper or lower end of the roller. It is formed in a large circle, and the rotation axis of the roller is installed eccentrically from the center of the circular bottom of the roller seat along the direction in which the strung line is pulled, so that the upper end or the lower end of the roller contact the side surface of the roller seat. can do.

In addition, the rim is connected to the handle and has a rim inner portion in which a through hole through which the string passes is formed along an inner circumferential surface, and a horizontal extension portion extending from the rim inner portion and rotatably seated at a lower portion of the roller. It may include a housing portion and a second housing portion coupled to the first housing portion, the upper portion of the roller rotatably coupled.

In addition, the rollers adjacent to each other on which the rows are sequentially hung may be located together in the same space that is open to the outside of the rim.

According to the present invention, there is no damage to the lines forming the net, and the elasticity of the entire net can be effectively controlled. In addition, it is possible to re-adjust the mesh elasticity repeatedly. Other effects of the present invention will be clearly grasped and understood by experts or researchers in the technical field through the detailed contents described below or during the process of implementing the present invention.

1 is a perspective view of a sports racket capable of adjusting tension according to an embodiment of the present invention.
Figure 2 is an exploded perspective view showing the embodiment of Figure 1;
3 is an enlarged view of part A of FIG. 2.
4 is a lateral cross-sectional view of a portion of the rim of the embodiment of FIG. 1;
5 is a cross-sectional view in the plan direction of a portion of the rim of the embodiment of FIG. 1;
Figure 6 is a plan view briefly showing the line installed in the embodiment of Figure 1;

The features and effects of the present invention described above will become more apparent through the following detailed description in connection with the accompanying drawings, and accordingly, those of ordinary skill in the technical field to which the present invention belongs can easily implement the technical idea of the present invention. I will be able to. In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form of disclosure, it should be understood to include all changes, equivalents, or substitutes included in the spirit and scope of the present invention. The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention.

Hereinafter, with reference to the accompanying drawings will be described the configuration, function and operation of the tension adjustable sports racket according to the present invention. However, reference numbers for the same or similar components throughout the drawings will be used unified.

1 to 6 are related to a racket according to an embodiment of the present invention.

The racket 100 according to an embodiment of the present invention has a rim 10 in which the string 40 is zigzag. A handle 50 including a handle is connected to one side of the rim 10.

The winder unit 30 is mounted on the bag 50. Referring to FIG. 2, the winder unit 30 is provided on the front and rear surfaces of the bag 50, one respectively. Winder unit 30 increases the tension by winding the string on the rim as the user winds it in one direction, and releases the winding by pressing or pulling the winder unit to release the string wound around the winder unit 30 ( 40). In this way, the tension of the string on the rim is adjusted according to the number of revolutions of the winder unit.

Such a winder unit, including Korean Patent No. 10-0715441, Korean Patent Publication No. 10-2015-0026518, Korean Patent No. 10-1833680, Korean Patent No. 10-1706691, etc. One of the reels for winding can be adopted. Since the configuration and operation method of the winder unit is substantially the same as the previously disclosed invention, a detailed description will be omitted.

In the illustrated embodiment, the winder unit 30 is provided on each of the front and rear sides of the bag 50, and is configured to wind one vertical line and one horizontal line. In another embodiment not shown, one winder unit is provided, and the single winder unit may be configured to wind both horizontal and vertical lines.

3 to 5 are related to the detailed configuration of the rim.

At each direction change point at which the direction of the string 40 changes along the circumference of the rim 10, a roller 20 around which the string 40 is wound is rotatably coupled.

The friction between the roller 20 and the string 40 that occurs when the string 40 is pulled is reduced as the string is hung around the roller 20 capable of free rotation at each point where the string 40 changes direction. Accordingly, when the end of the string 40, which has been changed in direction a plurality of times, is pulled by the winder unit 30, all of the ends of the string 40 can be properly pulled.

In addition, even if the pulling and releasing of the string 40 is repeated several times, there is no direct friction between the string 40 and the rim 10, so that the fear of abrasion of the string is greatly reduced. The resulting string's life expectancy can be greatly increased.

Referring to FIG. 3, the roller 20 has a concave intermediate portion 21 to which the string 40 contacts, and has an overall shape. The pulled string 40 converges to the middle part 21 of the roll furnace having a small diameter, so that the string 40 does not deviate outside the roller 20.

Each of the upper and lower portions based on the intermediate portion 21 of the roller 20 is formed of a cylindrical end portion 22 having a constant diameter. This distal end 22 becomes a part in contact with the side surface of the roller seat 15 of the rim 10 to be described later.

The rim 10 includes a first housing part 10a connected to the handle 50 and a second housing part 10b connected to the first housing part 10a. The first housing portion 10a and the second housing portion 10b are detachably coupled through screws (not shown).

The first housing part 10a includes a rim inner part 11 and a horizontal extension part 12. The rim inner part 11 is a part forming the inner circumferential surface of the rim 10, and a plurality of through holes 111 through which the string 40 passes are formed along the inner circumferential surface of the rim inner part 11. The thickness of the rim inner portion 11 corresponds to the thickness of the rim.

The horizontal extension part 12 extends outward from the rim inner part 11 and is a portion to which the lower part of the roller 20 is rotatably coupled. A roller seat 15 on which the distal end 22 of the roller 20 is seated is formed in the horizontal extension 12. The roller seat 15 is formed as a concave groove of a circular cross section, and the diameter of the roller seat 15 is larger than the diameter of the lower end (end 22) of the roller 20.

Accordingly, it is possible to reduce the friction between the side surface of the roller seat 15 and the roller 20. In addition, although not shown, by making the length of the rotation shaft 23 of the roller 20 larger than the depth of the shaft hole formed on the bottom of the roller seat, friction between the bottom surface of the roller seat 15 and the roller 20 can be further reduced.

Meanwhile, the rotation shaft 23 of the roller 20 is installed eccentrically from the center of the circular bottom of the roller seat 15 along the direction in which the string is pulled. That is, the position of the shaft hole in which the rotation shaft 23 of the roller 20 is mounted is formed to be eccentric from the center of the roller seat 15 according to the direction in which the string is pulled.

As a result, as shown in FIGS. 4 and 5, when the roller is mounted on the roller seat, the end portion 22 of the roller 20 comes into contact with the side surface of the roller seat 15. Then, the force applied to the roller 20 as the string 40 is pulled on the roller 20 is not only the rotation axis 23 of the roller 20, but also the roller seat 15 and the end portion 22 of the roller 20 It is distributed and supported by the contact surface of. Accordingly, despite the large tension being applied to the string 40, the load applied to the roller 20 and the rotation shaft 23 of the roller 20 is evenly distributed, thereby preventing damage to the roller 20.

In this way, if the diameter of the roller seat 15 is made larger than the roller 20, but the position of the shaft hole is eccentric, the side of the roller seat 15 becomes in contact with the roller 20 at approximately one point, so the roller 20 Even when the friction between the and roller seat 15 is reduced and the tension of the string 40 is increased, a supporting force can be obtained accordingly.

In addition, the adjacent rollers 20 on which the strings 40 are sequentially hung are placed together in the same space 121 opened to the outside of the rim 10.

Specifically, the string 40 passes through the rim 10 and comes out to the outside of the rim 10 and then enters the inside of the rim 10 again through a pair of rollers 20, at this time, the pair of rollers 20 ) Is located in the same space part 121 that is open to the outside. This space portion 121 is divided by the support blocks 122, and the support block 122 has a screw hole 123 for screwing the second housing portion 10b and the first housing portion 10a. Is formed.

As the rollers 20 on which one row 40 is overlaid are positioned together in one space 121, the first housing part when the row 40 that spans the rollers 20 and changes direction moves There will be no direct friction with (10a). Accordingly, it is possible to eliminate the fear of abrasion of the string due to friction between the string 40 and the rim 10. In addition, as the friction is reduced, it is easy to wind the string, and the tension of the entire net can be easily adjusted just by pulling one end of the string.

Although not shown here, the second housing part 10b is formed so as to protrude within the space 121 at the same height as the height of the support block 122, and when the second housing part 10b is coupled to the first housing part 10a. ) It is also possible to further reinforce the rigidity of the rim by forming one or more reinforcing bodies in contact with each other.

Meanwhile, the second housing part 10b has a shape symmetrical with the horizontal extension part 12 of the first housing part 10a, and has a roller seat 15 and a shaft hole for accommodating the upper end of the roller 20. . Here, the point that the shaft hole is eccentrically mounted from the circular center of the roller seat 15 so that the upper end (end) of the roller 20 contacts the side surface of the roller seat 15 is the coupling relationship between the first lower portion and the roller described above. Duplicate description will be omitted as it is the same.

6 is related to the structure in which the string 40 is installed. (A) of FIG. 6 is related to the mounting of the vertical line 41, and (b) is related to the mounting of the horizontal line 42.

The vertical line 41 starts at the lower right corner of the rim 10 as seen in the drawing. The vertical lines 41 are arranged in zigzag to the top of the drawing, and surround the rollers 20 at each direction change point. The string extends over the last roller 20 and then leads to the winder unit 30 in front of the racket.

Meanwhile, the horizontal line 42 starts from the upper right corner of the rim 10 as seen in the drawing. As the direction is changed several times, it extends to the lower left side of the rim 10, and similarly, it spans the roller 20 at each direction change point. Thereafter, the string 40 is connected to the winder unit on the back of the racket.

At this time, an empty space is formed inside the bag 50 of the racket, so that the string 40 leads to the winder unit 30 through the inside of the bag. On the other hand, it is possible to disperse the tension applied to the string by arranging a single or a plurality of rollers inside the bag and making the rollers span and connect.

Also, when connecting the horizontal lines later after installing the vertical lines, the horizontal lines can be arranged so that they are intertwined with the already installed vertical lines.

In the case where the vertical line winder unit and the horizontal line winder unit are separately installed on the racket, the user can appropriately wind each winder unit to adjust the elasticity of the net formed by the horizontal line and the vertical line according to the user. In addition, it is possible to re-tune the overall elasticity of the net by readjusting only one winder unit while using the racket.

Through the roller, the fear of wear of the string due to direct friction between the string and the rim can be reduced, and the tension of the string extended by the winder unit is transmitted evenly to the entire mesh, so that the elasticity of the entire mesh can be even.

The sports racket capable of adjusting tension as described above is not limited to the configuration and method of the embodiments described above, but the embodiments are all or part of each of the embodiments selectively combined so that various modifications can be made. It can also be configured.

In the detailed description of the present invention described above, it has been described with reference to a preferred embodiment of the present invention, but those skilled in the art or those of ordinary skill in the art, the spirit of the invention described in the claims to be described later And it will be appreciated that various modifications and changes can be made to the present invention within a range not departing from the technical field.

100: racket 10: rim
10a: first housing part 11: rim inner part 111: through hole
12: horizontal extension 121: space 122: support block 123: screw hole
10b: second housing part
15: roller seat
20: roller 21: middle portion 22: end portion 23: rotating shaft
30: winder unit
40: line 41: vertical line 42: horizontal line 50: bag

Claims (4)

In a sports racket with a rim in which the string is hung in zigzag,
A roller on which the string is circumferred is rotatably mounted at each direction change point of the rim where the direction of the string is changed,
One end of the string is fixed to the rim, and the other end is connected to a winder unit provided in the handle of the racket, and the tension of the string installed on the rim is adjusted according to the operation of the winder unit,
The roller has a concave middle part in contact with the string,
The rim has a roller seat in which the upper and lower ends of the roller are partially accommodated,
Each of the roller seats is formed in a circular shape with a diameter larger than that of the upper or lower end of the roller,
The rotational axis of the roller is installed eccentrically from the center of the circular bottom of the roller seat along the direction in which the struted string is pulled, and the upper end or the lower end of the roller contacts the side surface of the roller seat.
Sports racket with adjustable tension. delete In claim 1,
The rim is
A first housing part connected to the handle and having a rim inner part formed along an inner circumferential surface of the through hole through which the string passes, and a horizontal extension part extending from the rim inner part and rotatably seated under the roller, and
And a second housing portion coupled to the first housing portion and rotatably coupled to an upper portion of the roller.
Sports racket with adjustable tension. In claim 1,
The adjacent rollers on which the rows are sequentially hung are located together in a space formed to be opened to the outside of the rim.
Sports racket with adjustable tension.

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