KR102092479B1 - Racket for tennis - Google Patents

Abstract

The present invention relate to a tennis racket which can significantly reduce twisting of a racket, which may occur when the racket hits a tennis ball, absorb shock and vibration generated when hitting the tennis ball, thereby providing stability and preventing physical damage to a user, and facilitate control of the tennis racket. The tennis racket comprises a shaft which includes a head on which a string is fastened in a lattice form to an oval-shaped frame to hit a tennis ball, a neck portion connected in a downward direction from an axial center of the head, and a handle disposed in a downward direction of the neck portion and gripped by a hand of a user. The tennis racket further comprises: a shock absorbing means which absorbs and alleviates shock and vibration generated when a tennis ball is hit on the frame and the neck portion; and a balancer which increases a swing speed while increasing a centripetal force by keeping a balance of the racket at a boundary of the neck portion and the handle which form the shaft.

Description

Racket for tennis {RACKET FOR TENNIS}

The present invention relates to a tennis racket, and more specifically, to reduce the impact and vibration generated when hitting the ball during the swing process, and minimizes the torsional phenomenon even if it is hit at a position outside the sweet spot, thereby minimizing the user's physical condition. It relates to the provision of an improved racket to prevent phosphorus damage.

Tennis is a kind of sport that uses a soft tennis ball to compete by hitting it with a net in between, and the tool used to hit and hit a tennis ball based on the net is called a racket.

The tennis racket as described above has been changed to a shape having a "Y" shaped neck between the head and the handle in a configuration in which the handle is protruded to one side of the elliptical head, and continues to develop until now. have.

In the course of exercising using such a tennis racket, technology development has been made to alleviate the impact generated in the course of hitting a tennis ball and maintain the balance of the tennis racket. As follows.

Patent Literature 1 is a tennis racket in which a head portion and a handle portion are connected by a yoke portion and a V-shaped groove is formed in the yoke portion,

A buffer opening groove 31 is formed on the outer surface of the yoke portion 3, and a buffer 41 integrally formed with a flange 4 is interpolated to protrude along the outer circumferential surface of the buffer opening groove 31 It has a structure.

Patent Document 2, in the normal tennis racket consisting of the handle (1), the neck (2) and the frame (3),

It is a configuration characterized in that at least one detachable shock absorber (4) is formed on the handle portion (1) or the neck (2).

Utility Model Application No. 20-1990-0003680 Patent No. 10-0163649-0000

No.

Patent document 1 of the prior art as described above, by forming a buffer insertion groove in the yoke portion to embed a buffer, but a vertical line connected to the head is connected together to buffer the impact generated when hitting a tennis ball through the vertical line It is a structure that can be delivered to a ward and relaxed.

Patent Document 2, by installing one or more shock absorbers on the upper part of the handle or neck of the tennis racket, restrains the shock wave generated when hitting to proceed to the handle so as to mitigate the shock and protect the wrist or cuff to enjoy safe movement In addition to making it possible, it is easy to hold the handle.

In the prior art as described above, although a cushioning means for absorbing shock is devised in a part of the tennis racket, it does not effectively absorb or alleviate shock and vibration that are strongly repelled when hitting a tennis ball. It is a situation that does not reduce the physical anomalies of users such as elbows due to the shock and vibration constantly occurring in the process.

In particular, when hitting a tennis ball, when hitting a sweet spot, it will not only have a great sense of resistance, but it will also be possible to send the ball to the desired location quickly and far, without much shock and vibration, but the ball will not hit the sweet spot and will fit around it In this case, even if the racket is held by hand, the speed of the ball and the force, impact, and vibration when hitting the ball in the direction of the hitting part are transmitted more severely.

In addition, if the balance where the center of gravity of the racket is tilted in the direction of the head or the handle is not correct, the shock and vibration generated when striking the ball become more severe, and when the tennis ball is hit while the balance of the racket is not balanced It is impossible to rule out that the phenomenon that the racket suddenly twists to the hit point is intensified.

If the center of gravity of the racket is biased in the direction of the head, the centrifugal force will increase when taking the action of swinging the racket. On the contrary, since the centripetal force that the user wants to hold by holding the handle is weak, it is difficult to stably control the entire racket. Even if it does, the racket will feel quite heavy.

Conversely, if the center of gravity is biased in the direction of the handle, the centripetal force to hold and hold the racket may increase, but since the centrifugal force decreases, the swing speed for hitting the tennis ball does not increase, so the impact force decreases to achieve the desired speed. A number of problems are occurring, such as being unable to be free from problems that are difficult and difficult to control.

Accordingly, in the present invention, as the invention was made to solve the above problems, the string 103 and the head 103 and the head (103) enabling the tennis ball to be hit by binding the string 102 to the elliptical frame 101 in a grid shape. A racket for tennis consisting of a shaft 106 having a neck portion 104 connected downwardly from the axis center of 103) and a handle 105 that can be held by the user in the downward direction of the neck portion 104 In;

Shock absorbing means 110 for absorbing and alleviating the shock and vibration generated when hitting the tennis ball to the frame 101 and the neck 104;

It characterized in that it further comprises a balancer 130 for increasing the swing speed while increasing the centripetal force by maintaining the balance of the racket 100 at the boundary between the neck 104 and the handle 105 constituting the shaft 106 With;

It can significantly reduce the twisting of the racket that can occur when hitting a tennis ball, absorbs shock and vibration generated during the hitting ball, provides stability, prevents physical damage to the user, and protects the tennis racket It is possible to achieve the purpose of facilitating the control of the.

The present invention improves the neck constituting the tennis racket, and provides a cushioning means to absorb and mitigate the shock and vibration generated when hitting a tennis ball, and prevents physical damage to users, while allowing the racket by inertia. This torsional phenomenon is significantly reduced to increase the user's convenience while allowing the user to easily control the racket while increasing the quality and durability of the racket.

The weight of the racquet is not increased or decreased by adding or subtracting the weight to the swing handle point at the boundary of the shaft handle and the neck that constitutes the tennis racquet, increasing the centripetal force, and providing a stable swing balance when the user swings the racquet. It is an invention having various effects such as increasing the head speed by maintaining and reducing the shaking of the head so as to hit the tennis ball in the sweet spot, thereby increasing the repulsive force of the ball and increasing the speed to improve the direction.

1 is an exemplary perspective view showing a tennis racket to which the technology of the present invention is applied.
Figure 2 is a perspective view showing the impact absorbing means of the tennis racket to which the technology of the present invention is applied.
Figure 3 is a cross-sectional view showing the shock absorbing means of the tennis racket to which the technology of the present invention is applied.
Figure 4 is a perspective view showing the balance of the tennis racket applied technology of the present invention.
Figure 5 is a cross-sectional view showing a balancer of the tennis racket to which the technology of the present invention is applied.
Figure 6 is another configuration showing the shock absorbing means of the tennis racket to which the technology of the present invention is applied.
7 is another configuration diagram showing the shock absorbing means of the tennis racket to which the technology of the present invention is applied.

Hereinafter, a preferred configuration and operation of the present invention for achieving the above object in connection with the accompanying drawings will be described.

1 is an exemplary perspective view showing a tennis racket to which the technology of the present invention is applied, and FIG. 2 is a perspective view showing an excerpt of shock absorbing means of a tennis racket to which the technology of the present invention is applied, and FIG. 3 is a technology of the present invention Figure 4 is a cross-sectional view showing the impact absorbing means of the tennis racket applied, Figure 4 is a perspective view showing a balancer of the tennis racket to which the technology of the present invention is applied, Figure 5 is a balancer of the tennis racket to which the technology of the present invention is applied Figure 6 is another cross-sectional view showing the shock absorbing means of the tennis racket to which the technology of the present invention is applied, and FIG. 7 is also showing the shock absorbing means of the tennis racket to which the technology of the present invention is applied. It is described together as another configuration diagram.

The conventional tennis racket 100 is provided with a head 103 so as to strike a tennis ball by binding the string 102 to the oval frame 101 in a grid shape, and the shaft of the head 103 It consists largely of a shaft 106 having a roughly "Y" shaped neck 104 in the downward direction from the center and a handle 105 that can be held by the user in the downward direction of the neck 104.

In the present invention, the frame 101 and the neck 104 further comprises a shock absorbing means 110 for absorbing and alleviating the shock and vibration generated when hitting a tennis ball, and constituting the shaft 106 It is characterized by further comprising a balancer 130 for increasing the swing speed while increasing the centripetal force by maintaining the balance of the racket 100 at the boundary position between the neck 104 and the handle 105.

The shock absorbing means 110, the impact generated when hitting a tennis ball in the longitudinal direction of the neck 104 in the center of the width of the left bridge 111 and the right bridge 112 constituting the neck 104 and A buffer slot 113 is formed to dampen the vibration.

Inside the buffer slot 113, shock and vibration concentrated by the buffer slot 113 are further provided through a buffer member 115 made of a material such as silicone, urethane, or rubber, which has excellent shock and vibration absorption. It is configured to absorb through (115).

In addition, in the lower center of the head 103 that is connected to the neck 104, the inertial slot () prevents the tennis ball from hitting the off-position and is distorted by twisting the force to the hit position. 116).

The width of the inertial slot 116 is about 1 mm, and when it is smaller, the head 103 at the position of the inertial slot 116 collides with each other when the head is twisted by the hitting of a tennis ball. This is because it is difficult to keep the head 103 stable when it is too large.

Of course, in order to ensure that the inertial slot 116 is always maintained at a constant width, the tension of the string bound to the head 103 in the form of a lattice is increased in the vertical direction than in the horizontal direction so that a constant interval can be maintained at all times. It will be preferable, it is good to be able to absorb shock while preventing mutual friction through the buffer member 115 further interposed in the inertial slot 116.

The intermediate portion of the left bridge 111 and the right bridge 112 constituting the neck 104 is further formed with an inertial bridge 117 protruding outward to sweeten a tennis ball like the inertial slot 116. It is possible to minimize the transmission of shock and vibration to the user's body while providing a constant stroke and hitting force by being able to respond to the inertial force (torsion) that occurs when hitting a position outside the spot.

Further provided with a buffer member (portion indicated by a dotted line on the drawing 115) connecting the upper and lower inner surfaces of the inertial bridge 117 in the longitudinal direction is connected to the buffer member 115 interposed in the inertial slot 116 By doing so, it is also possible to more easily absorb the shock and vibration generated when hitting the tennis ball.

The balancer 130 is a handle 105 at a connection point between the neck 104 and the handle 105 which becomes a swing weight point (the center of gravity of the racket, SP) rather than the entire center of gravity of the tennis racket 100. The balance hole 131 is formed in a direction perpendicular to the axis center of.

The balance hole 131 is a lightweight material and has a weight space 132 therein, and one side is closed and a weight body 134 having an entrance 133 is coupled to the other side, and an entrance 133 of the weight body 134 ) Is provided with a cover 135 that can be opened and closed.

The weight space 132 increases or decreases the centrifugal force (CF) to hold and hold the handle 105 in the process of swinging the user by adding or subtracting the weight 136 by the user's choice, thereby increasing the weight of the tennis racket 100. By making the overall weight feel lighter, the control of the tennis racket 100 is facilitated to increase the centrifugal force at the moment of impact hitting the tennis ball to speed up the swing speed.

The weight body 136 may use a variety of materials such as metal, non-ferrous metal, graphite (carbon), synthetic resin, wood, etc., and is not limited to a special material because it can be used as long as it increases weight, and the cover 135 It would be desirable to configure only the surface of the surface to be exposed to the outside so as not to damage the aesthetics of the tennis racket or lower the grip force.

The weight body 136 will preferably be prevented from moving after being inserted into the weight space 132, and the weight of the weight body 136 may be considered in mathematical calculations in consideration of the type of tennis racket or the overall weight. Since it can be derived by the present invention is not mentioned.

Looking at the state of use of the tennis racket 100 to which the technology of the present invention is applied as described above is as follows.

The use of the tennis racket 100 is as well-known, and the effect and advantages obtained by using the tennis racket 100 to which the shock absorbing means 110 and the balancer 130, which are the techniques of the present invention, are applied. Looking at it as follows.

When hitting the tennis ball, if the ball does not fit into the sweet spot, the impact and vibration will be severe, and the hitting point will be pushed in the opposite direction of the ball, so the tennis racket 100 will eventually be twisted. You will not be free.

In the present invention, since this phenomenon is mitigated by the shock absorbing means 110, it absorbs and alleviates the shock and vibration generated in the course of hitting the tennis ball, and the hitting point of the tennis ball continues in the opposite direction of the ball. It is possible to prevent and reduce the physical damage of the user by alleviating the twist by the phenomenon of being pushed.

Looking at this in detail, when hitting a tennis ball, it fits into the string 102 connected to the head 103 in a lattice form, and the shock and vibration generated in this process are the neck 104 and the handle ( 105).

The primary shock is alleviated by the inertial slot 116 formed in the lower center of the head 103 before the shock and vibration generated in this way are transmitted to the handle 105 through the neck 104, and the neck ( Secondary shock is absorbed and relieved through the buffer slot 113 formed in the longitudinal direction from the center of the width direction of the left and right bridges 111 and 112 constituting 104).

In particular, in the case of further interposing the shock absorbing member 115 made of a material capable of absorbing shock in the interior of the shock absorbing slot 113, the shock transmitted is further absorbed and alleviated, thereby substantially transmitting the shock to the handle 105. Over-vibration becomes extremely insignificant to the user's feeling, so it is possible to prevent the physical damage of the user by alleviating the shock even if it does not fit into the sweet spot in the process of hitting the tennis ball and fits into the side.

In addition, in the case of the inertial slot 116, the tennis ball does not fit into the sweet spot, and the phenomenon of twisting by being biased against the side is mitigated. When the tennis ball is biased and fit, the direction in which the ball hits is pushed in the opposite direction to the ball. This occurs because the tennis racket 100 is twisted. This is possible because the head 103 itself is twisted by the inertial slot 116 to absorb the shock and vibration.

In the case of the balancer 130, after the cover 135 is opened, the weight 136 of the required weight is inserted, and then the racket 100 for tennis can be used in the state where the cover 135 is closed. By inserting (136), the total weight of the tennis racket 100 will increase, but the actual bodily weight does not increase, but rather has a light feeling, so that the user can easily control the tennis racket 100.

This increases the centripetal force (CF) at the position of the swing weight point (SP), so while the user performs swing using the tennis racket (100), while exerting sufficient centripetal force holding the handle trying to escape, the tennis racket This is possible because the centrifugal force to 100 swing (rotate) is also guaranteed.

The present invention as described above, because the weight 136 embedded in the swing weight point (SP) of the handle 105 increases the centripetal force during the swing process, the handle 105 is pulled first rather than the frame 101 naturally The normal swing that becomes the head last after the hand first that comes down and follows the frame 101 is made.

Since the tennis racket 100 is hand-first and the frame follows the handle, the head speed of the frame naturally increases, so that the distance of the ball after impact can be increased, and the weight 136 is swung weight. Since it is embedded in the point (SP), when the player holds the golf club, it has a light sensation, so the control of the golf club is easy.

In addition to the purpose of increasing the centripetal force when adding or subtracting a weight to the balancer 130, it will be natural that the tennis racket can be freely adjusted according to the user's condition or when the tennis racket is to be fitted to the user's body shape or the like.

As the ball hits in addition to the sweet spot by the inertial slot formed in the head and the buffer slot further formed in the neck, the racket maintains a balance against the inertia to be pushed in the opposite direction of the ball and minimizes twisting. It has the advantage of being able to prevent physical damage by reducing shock and vibration.

100; Tennis racket 101; frame
103; Head 104; xylem
105; Handle 110; Shock absorbing means
111; Left bracket 112; Right bridge
113; Buffer slot 115; Shock absorber
116; Inertial slot 117; Inertia bridge
130; Balancer 131; Balancer Hall
134; Weight body 135; cover
136; Weight

Claims (3)

A string 103 that binds the string 102 to the oval-shaped frame 101 in a lattice form to hit the tennis ball, and the neck portion 104 connected downward from the axis center of the head 103 And, the shaft 106 having a handle 105 that can be held by the user by hand in the downward direction of the neck 104;
Shock absorbing means 110 for absorbing and alleviating the shock and vibration generated when hitting the tennis ball to the frame 101 and the neck 104;
The racket for tennis composed of a balancer 130 for increasing swing speed while increasing the centripetal force by maintaining the balance of the racket 100 at the boundary between the neck 104 and the handle 105 constituting the shaft 106 In;
The shock absorbing means 110 is formed to protrude outward at an intermediate position of the left bridge 111 and the right bridge 112 constituting the neck 104, and strikes the tennis ball at a position outside the sweet spot. An inertial bridge 117 that can respond to the inertia force;
A buffer formed to alleviate the shock and vibration generated when hitting a tennis ball in the longitudinal direction of the neck 104 at the center of the width of the left bridge 111 and the right bridge 112 constituting the neck 104. A slot 113;
An inertial slot formed to prevent twisting due to the bias of the force to the striking position when the tennis ball hits the off-center position without hitting the sweet spot at the lower center of the head 103 connected to the neck 104. (116) and;
A racket for tennis, characterized in that it comprises a buffer member (115) for absorbing shock and vibration through the buffer slot (113) and the inertial slot (116). delete According to claim 1;
The balancer 130 is a balance formed at a right angle to the axis center of the handle 105 at the connection point between the neck 104 and the handle 105, which becomes the swing weight point (SP) of the tennis racket 100. A hole 131;
A weight body 134 having a weight space 132 therein and a weight body 134 coupled to the balance hole 131 with an inlet 133 on the other side;
And a cover 135 that is openably coupled to the entrance 133 of the weight body 134;
The racket for tennis, characterized in that it comprises a weight (136) that can be adjusted to the weight space (132).

Images