KR102604608B1 - damper for a tennis racket - Google Patents

Abstract

The present invention relates to a damper for a tennis racket. More specifically, the present invention relates to a damper for a tennis racket, and more specifically, to minimize the vibration transmitted to the user's wrist by secondarily damping the vibration caused by the reaction that occurs when hitting the ball with the racket, and to minimize the vibration transmitted to the user's wrist. This relates to a damper for a tennis racket that can stably attenuate vibration in the left and right directions even when the string vibrates in the left and right directions due to rotation.
The present invention for achieving the above object consists of a first body and a second body located on both sides of the string constituting the racket and coupled to each other, wherein the first and second bodies include a plate-shaped pressure plate, and the pressure plate It consists of a pair of coupling bars installed symmetrically at the center on one side, and a damping member is further provided on the outside of the coupling bar in close contact with the string by the pressing plate.

Description

Damper for a tennis racket

The present invention relates to a damper for a tennis racket. More specifically, the present invention relates to a damper for a tennis racket, and more specifically, to minimize the vibration transmitted to the user's wrist by secondarily damping the vibration caused by the reaction that occurs when hitting the ball with the racket, and to minimize the vibration transmitted to the user's wrist. This relates to a damper for a tennis racket that can stably attenuate vibration in the left and right directions even when the string vibrates in the left and right directions due to rotation.

In general, rackets used in tennis, tennis, racquetball, squash, etc. have an oval frame with a concave portion formed along the center of the outer circumference of the frame, and are installed so that they intersect in the horizontal and vertical directions at regular intervals on the inner circumference of the frame to ensure the impact of the ball. It consists of a string extending from the frame and a handle portion extending from the frame to a predetermined length.

When exercising using such a racket for a long period of time, severe pain occurs in the user's elbow or wrist due to the shock generated upon impact of the ball.

Conventionally, the above-mentioned frame is made of lightweight and highly durable synthetic resin such as polyurethane to reduce the weight and minimize the impact on the elbow or wrist.

However, simply reducing the weight of the racket does not effectively absorb and disperse the shock generated at the moment the ball impacts the string. As a result, most of the shock generated at each impact is transmitted directly to the arm being used, causing damage for a certain period of time. If you continue to play sports such as tennis, tennis, racquetball, or squash, you will experience severe pain in your elbow or wrist.

So, in order to solve the above-mentioned problem, the technology described in Korean Registered Utility Model No. 20-0421948 as shown in Figures 1 and 2 was proposed, the technical features of which are provided in various rackets 100 to reduce the impact of the ball. In the racket vibration prevention device (1), which absorbs and disperses vibration transmitted when playing, a first through hole (12) is formed in the center, and second and third through holes are formed on both sides of the first through hole (12). An elastic band (10) formed by balls (14, 16) spaced apart at predetermined intervals; And a fixing member (20) whose central part is inserted and fixed into the first through hole (12) of the elastic band (10) and whose front and back surfaces have first and second locking protrusions (22, 24) integrally formed therewith, respectively. Includes; wherein the elastic band 10 is positioned so that the fixing member 20 is disposed in the grid space of the racket string 104, and one side thereof is elastically supported on one side string 104 and is positioned on the front surface. It is folded to the side so that the second through hole 14 is forcefully fitted into the first stopping protrusion 22, and the other side is folded to the rear side while being elastically supported by the other side string 104 to form the third through hole 16. ) is characterized in that it is forcibly fitted into the second stopping protrusion (24).

However, the technology described in Korean Registered Utility Model No. 20-0421948 is fastened to elastically support the string on the racket string, and has the advantage of absorbing and dispersing the vibration generated upon impact of the ball, but the overall Since it consists of a single elastic band (10) and shakes together when vibration occurs to dampen the vibration, there is a problem in that the damping efficiency is not good.

Korea Registered Utility Model No. 20-0421948 (registered on July 12, 2006)

The present invention was devised to solve the above-mentioned problems, and the object of the present invention is to consist of first and second bodies joined on both sides of the strings constituting the racket, and between the first and second bodies are rubber or silicone. By providing a damping member made of material, the vibration generated by the impact applied to the string is primarily attenuated by the damping member applying an elastic force in the opposite direction to the vibration of the string, and secondarily during the shaking of the first and second bodies. The aim is to provide a damper for tennis rackets that can dampen and minimize vibration transmitted to the user's wrist.

Another object of the present invention is to reduce the weight of the damping member while maintaining the damping force by cutting the edges of the damping member that is pressed from both sides of the string or forming a groove on the inside of the opposite side that is not in contact with the string, thereby reducing the burden on the user. The goal is to provide a damper for tennis rackets that can minimize the load.

In addition, another object of the present invention is to form a groove formed on the inside of the opposite side that is not in contact with the string in the damping member that presses from both sides of the string to correspond to the part in contact with the string, so that when the string comes into contact with the string, it corresponds to the groove. The side of the string is supported by making it easy to collapse, or by forming a receiving groove into which the string is inserted on the surface in contact with the string to support the side of the string, so that when hitting a tennis ball, rotation is applied to the ball. Vibration is applied to the string in the left and right direction, and a damper for a tennis racket is provided that can attenuate the left and right vibration applied to the string by the receiving groove.

The present invention to solve these problems;

It consists of a first body and a second body that are located on both sides of the strings that make up the racket and are coupled to each other, wherein the first and second bodies are plate-shaped and are installed on one side of the pressure plate so that they are symmetrical to the center. It is characterized by being made up of a pair of joined bars.

Here, the cross-section of the coupling bar is formed in a triangular shape, and among the three surfaces of the coupling bar, two coupling surfaces facing the center of the pressure plate are characterized in that sawtooth-shaped locking protrusions are formed in the longitudinal direction.

In addition, a damping member including a surface in close contact with the string by the pressure plate is further provided on the outside of the coupling bar.

Here, a cutting part is formed at the edge of the damping member by cutting off a portion of the damping member.

At this time, the damping member has a groove formed on the inside of the opposite surface that is not in contact with the string and on the surface in contact with the pressure plate, and the groove is a horizontal or vertical long groove formed along the longitudinal direction of the string. Do it as

In addition, a gap maintenance member formed in the shape of a pin is further formed at the end of the coupling bar.

Meanwhile, a fixing member is formed to protrude on one side of the pressing plate to be positioned between the coupling bars, and an insertion groove into which an end of the coupling bar is inserted is formed in the fixing member, and the insertion groove is formed at an end of the coupling bar. It is characterized in that an insertion protrusion is formed to be inserted into the groove.

According to the present invention of the above configuration, the racket is composed of first and second bodies coupled on both sides of the string, and a damping member made of rubber or silicon is provided between the first and second bodies, thereby providing a damping effect to the string. The damping member primarily attenuates the vibration generated by the applied impact by applying an elastic force in the opposite direction to the vibration of the string, and secondarily attenuates the vibration transmitted to the user's wrist during the shaking process of the first and second bodies. There is an effect that can be minimized.

In addition, the present invention reduces the weight of the damping member while maintaining the damping force by cutting the edges of the damping member that is pressed on both sides of the string or forming a groove on the inside of the opposite side that is not in contact with the string, thereby reducing the load applied to the user. There is an effect that can be minimized.

In addition, the present invention forms a groove formed on the inside of the opposite side that is not in contact with the string in the damping member that presses from both sides of the string to correspond to the part in contact with the string, so that when the string comes into contact, the part corresponding to the groove is easily By supporting the side of the string by making it depressed, or forming a receiving groove into which the string is inserted on the surface in contact with the string to support the side of the string, when hitting a tennis ball, when rotation is applied to the ball, the string moves left and right. Vibration is applied to the string, and the receiving groove has the effect of attenuating left and right vibrations applied to the string.

1 is a conceptual diagram of a racket equipped with a damper for a conventional tennis racket.
Figure 2 is a perspective view of a conventional damper for a tennis racket.
Figure 3 is a perspective view of a damper for a tennis racket according to the present invention.
Figure 4 is an exploded perspective view of a damper for a tennis racket according to the present invention.
Figure 5 is a longitudinal cross-sectional view of a damper for a tennis racket according to the present invention.
Figure 6 is a transverse cross-sectional view of a damper for a tennis racket according to the present invention.
Figure 7 is a perspective view of a damping member of a damper for a tennis racket according to another embodiment of the present invention.
Figure 8 is a perspective view of a damping member of a damper for a tennis racket according to another embodiment of the present invention.
Figure 9 is a perspective view of the first and second bodies of a damper for a tennis racket according to another embodiment of the present invention.
Figure 10 is a conceptual diagram showing a state in which a string is in contact with a damping member of a damper for a tennis racket according to the present invention and a state in which the string is in contact with a circular damping member.
Figure 11 is a perspective view of the first and second bodies of a damper for a tennis racket according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. The same reference numerals are used for the same components in the drawings, and duplicate descriptions for the same components are omitted. Additionally, it should be understood that the present invention can be implemented in many different forms and is not limited to the described embodiments.

The present invention relates to a damper for a tennis racket, and as shown in FIGS. 3 to 6, the structure includes a first body 210 and a second body 220 located on both sides of the string constituting the tennis racket and coupled to each other. It can be done with

Here, the first and second bodies 210 and 220 include a pressure plate 310 formed in a plate shape and a pair of coupling bars 320 installed to be symmetrical with respect to the center of one side of the pressure plate 310. It can be done.

Meanwhile, the cross-section of the coupling bar 320 may be formed in a triangular shape, as shown in FIG. 6. Among the three sides of the coupling bar 320, two coupling surfaces ( 322), as shown in FIG. 5, a sawtooth-shaped locking protrusion 324 is formed in the longitudinal direction.

Here, when combining the first and second bodies 210 and 220, the other coupling bar 320 is positioned to be inserted into the space formed between the coupling bars 320, and then the first and second bodies 210 and 220 are brought into close proximity. It is combined by doing so.

At this time, the coupling bar 320 is made of a material with a certain elastic force, so that when coupled, the coupling bar 320 is bent outward by the inclined surface of the locking protrusion 324 to be easily coupled, but in the coupled state, Even if an external force is applied due to elastic force, it does not arbitrarily bend outward and remains firmly coupled.

Therefore, when the user hits the ball using a racket, the racket damper 200 of the present invention shakes and attenuates the vibration generated in the process of hitting the ball and the string, thereby reducing the burden on the user's wrist. there is.

Additionally, a reinforcing member 326 may be further provided at the end of the coupling bar 320 to connect the coupling bars on both sides, and the reinforcing member 326 prevents the coupling bar 320 from bending excessively outward. can do.

In addition, a damping member 330 may be further provided on the outside of the coupling bar 320. The damping member 330 is made of a material such as rubber, silicone, elastomer, or EDPM, and has a through hole 331 in the center. ) is formed so that the coupling bar 320 is inserted.

Here, when the first and second bodies 210 and 220 are coupled to each other, the pressure plate 310 constituting the first and second bodies 210 and 220 presses the damping member 330 in the string direction so that it comes into close contact with the string. do.

Accordingly, the damping members 330 are in close contact with each other on both sides of the string, so when vibration occurs when the user hits the ball using a racket, the damping members 330 apply an elastic force in the opposite direction to the vibration of the string, causing 1 The vibration is attenuated secondarily, and the vibration is attenuated secondarily during the shaking process of the first and second bodies (210, 220), thereby doubly attenuating the vibration, thereby more completely attenuating the vibration.

At this time, the damping member 330 may have a rectangular parallelepiped shape, and the damper 200 for a racket of the present invention is a configuration used by being sandwiched between the lowest horizontal string of the racket and the adjacent vertical string, as shown in FIG. 10 Likewise, in the case of a rectangular parallelepiped shape, vibration can be attenuated more effectively by contacting the string over a larger area than the cylindrical shape.

Additionally, in the past, dampers for rackets were manufactured and used using polyurethane, etc., but they were made of a single material with a hardness above a certain level, so when a tennis ball hits the damper for a racket during a tennis game, it was difficult to reliably relieve the shock, making it easy for the strings to separate. There was a problem with separation.

However, in the present invention, the pressure plate 310 is made of a hard material, and the damping member 330 provided between the pressure plate 310 and the string is made of soft rubber, silicone, elastomer, or EDPM, as described above. It is made of a material that is firmly fixed to the string, and even if a tennis ball hits it directly, the shock can be relieved by the damping member 330, stably preventing separation from the string.

In addition, the damping member 330 has a cutting part 332 formed by cutting a part of the damping member 330 at the edge of the surface in contact with the string, and the damping member (332) is as much as the part cut by the cutting part 332. By reducing the weight of the racket 200 of the present invention, the increase in weight is minimized even if the damper 200 for the racket of the present invention is added to the racket, thereby relieving the burden on the user's wrist.

And, as another embodiment of the present invention, as shown in FIG. 7, the damping member 330 that directly pressurizes the string of the racket may have a groove 334 formed on the surface in contact with the pressing plate 310.

Here, the grooves 334 may have cylindrical first grooves 335 formed at regular intervals, and a second groove 336 may be further formed to connect the first grooves 335.

At this time, the second groove 336 forming the groove 334 may be formed long in the horizontal or vertical direction to follow the shape of the string in contact with the damping member 330. By this second groove 334, The string easily sinks into the damping member 330, which is made of rubber or silicone, and can effectively absorb not only the up and down vibration of the string that occurs when hitting, but also the left and right vibration that occurs due to spin on the ball.

In other words, during the game, the ball often flies with rotation, and if you hit the ball with a racket while the ball is rotating, the rotation of the ball affects the string, causing the string to vibrate in the left and right directions. do.

Here, if the string is formed so that it can be easily depressed inside the damping member 330, the depressed portion supports the side of the string, thereby preventing not only the vertical vibration of the string that occurs when the user hits the ball using a racket. In addition, it is possible to attenuate vibrations applied in the left and right directions.

Furthermore, the weight of the damping member 330 can be significantly reduced by the groove 334 formed of the first and second grooves 335 and 336, thereby reducing the burden on the user's wrist.

Meanwhile, as shown in FIG. 8 in another embodiment of the present invention, the damping member 330 that directly pressurizes the string of the racket has a receiving groove 338 into which the string is inserted on one side of the surface in contact with the string. You can. In this embodiment, by inserting the string directly into the receiving groove 338, even if the string vibrates in the left and right directions, the receiving groove 338 supports the side of the string and attenuates the laterally shaking vibration, thereby reducing the burden on the user's wrist. You can do it.

In another embodiment of the present invention, as shown in FIG. 9, the coupling bar is provided on one side of the pressing plate 310 that presses the damping member 330, which directly attenuates the vibration of the string, in the string direction. A fixing member 340 may be formed to protrude so as to be positioned between 320 .

Here, a pair of coupling bars 320 constituting the first and second bodies 210 and 220 are symmetrically positioned with respect to the center of the pressure plate 310 and are positioned at an angle of 180° to each other, and a pair of fixing members (340) is installed at a position forming a 90° angle with the coupling bar 320, as shown in the drawing.

At this time, an insertion groove 342 is formed at the end of the fixing member 340 so that the end of the other coupling bar 320 is inserted, and an insertion groove 342 is formed at the end of the coupling bar 320 to be inserted into the insertion groove 342. A protrusion 328 is formed.

Therefore, when the first and second bodies 210 and 220 are coupled to each other, the insertion protrusion 328 of the coupling bar 320 is inserted into the insertion groove 342 of the fixing member 340, respectively, so that the first and second bodies 210 and 220 are connected to each other. After the bodies 210 and 220 are combined, each locking protrusion 324 remains firmly coupled by the insertion protrusion 328 inserted into the insertion groove 342 even if they are twisted together.

Therefore, even if an external force is applied, the first and second bodies 210 and 220 remain firmly coupled, so that vibration can be stably attenuated without separation even if vibration is transmitted through the racket for a long time.

And, as another embodiment of the present invention, as shown in FIG. 11, a spacer 329 may be further formed at the end of the coupling bar 320 constituting the first and second bodies 210 and 220. The spacer 329 is formed in a pin shape.

Here, the gap maintainer 329 maintains a constant distance between the opposing pressure plates 310 to prevent the damping member 330 provided between the pressure plates 310 from being excessively compressed, thereby preventing the damping member 330 from being excessively compressed. (330) attenuates the vibration of the string with the normal elastic force set at the time of manufacture.

Additionally, by forming the gap maintainer 329 into a pin shape, the weight is minimized and the burden on the user's wrist during gaming is reduced.

Meanwhile, the above-described embodiments can be implemented individually, but they can also be implemented in combination with each other.

Although the preferred embodiments of the present invention have been described above, the scope of the rights of the present invention is not limited thereto, and the scope of the rights of the present invention extends to the scope substantially equivalent to the embodiments of the present invention. Various modifications can be made by those skilled in the art without departing from the above.

The present invention relates to a damper for a tennis racket. More specifically, the present invention relates to a damper for a tennis racket, and more specifically, to minimize the vibration transmitted to the user's wrist by secondarily damping the vibration caused by the reaction that occurs when hitting the ball with the racket, and to minimize the vibration transmitted to the user's wrist. This relates to a damper for a tennis racket that can stably attenuate vibration in the left and right directions even when the string vibrates in the left and right directions due to rotation.

200: Damper for racket 210: First body
220: Second body 310: Pressure plate
320: coupling bar 330: damping member
340: fixing member

Claims (7)

It consists of a first body and a second body that are located on both sides of the strings that make up the racket and are joined to each other,
The first and second bodies include a plate-shaped pressure plate,
One side of the pressure plate is composed of a pair of coupling bars installed symmetrically at the center,
The cross section of the coupling bar is formed in a triangular shape,
Of the three surfaces of the coupling bar, two coupling surfaces facing the center of the pressure plate are formed with sawtooth-shaped locking protrusions in the longitudinal direction,
A damping member including a surface in close contact with the string by the pressure plate is further provided on the outside of the coupling bar,
The pressure plate is made of a hard material, the damping member is made of rubber, silicone, elastomer, or EDPM, and a through hole is formed in the center into which the coupling bar is inserted,
A cutting portion is formed at the edge of the damping member to cut off a portion of the damping member,
The damping member has a groove formed on the inside of the opposite surface that is not in contact with the string and on the surface in contact with the pressure plate,
The groove is a damper for a tennis racket, characterized in that the groove is formed as a horizontal or vertical long groove formed along the longitudinal direction of the string.
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