CN219091035U - Table tennis bat - Google Patents

Abstract

A table tennis bat is characterized by being in the shape of a bat neck and a bat handle, wherein the bat neck is connected with a batting plate surface like a horn mouth, and the horn tail is connected with an upper handle strip in a horn shape, namely, the bat neck is gradually narrowed from the batting plate bat shoulder to the middle end of a lower handle strip of the bat handle; the upper handle bar of the racket handle is shorter than the lower handle bar, the length of the upper handle bar is about two thirds of the length of the lower handle bar, the middle rear part of the upper handle bar is thick, the front end of the upper handle bar is thin, the front end of the upper handle bar is narrower than the horn-shaped racket neck, and the whole upper handle bar is in a split wedge shape; the front end of the lower handle bar of the racket handle extends into the racket neck, the rear end of the lower handle bar is thicker, and the thicknesses of the front end and the middle part are equivalent to those of sponge and rubber stuck on the lower surface of the bottom plate; the upper handle bar and the lower handle bar of the racket handle are bilaterally symmetrical along the central axis, are thick near the central axis and thin at two sides, are asymmetric to the bottom plate, are narrowest in the middle of the lower handle bar, and have curved surfaces. The racket can be inverted, the short racket handle is opposite to the tiger mouth, and the advantages of the traditional straight racket are compatible; the long racket handle is just opposite to the tiger mouth, the holding racket is comfortable, and the racket face can be conveniently regulated and controlled to fully exert force.

Description

Table tennis bat

Technical Field

The utility model relates to a table tennis bat.

Background

The table tennis racket includes a traditional straight racket in China, a square straight racket in Japan and Korea, a transverse racket, other novel racket and the like. The traditional pen-hold table tennis bat in China consists of a batting board and a bat handle, wherein the bat handle consists of a handle which is made into a whole with a bottom plate and handle bars which are respectively stuck on the upper surface and the lower surface of the handle, the cross section of the bat handle is elliptic, the thickness of the front end of the bat handle is smaller than that of the tail end of the bat handle, and the upper handle and the lower handle are in the same bar shape and are opposite to each otherThe center plane of the bottom plate is symmetrical, when the table tennis adopts a small ball age with the diameter of 38mm, the playing method of the racket for pushing and tapping from left to right has a splendid battle in international games, a great number of table tennis lovers exist in the market at present, after the table tennis is changed into a large ball with the diameter of 40mm from 2000, the diameter of the table tennis is increased by about 5.3%, the volume is increased by about 18%, and the quality of the table tennis is changed from 2.5g to 2.7g, and the table tennis is increased by 8%; the formula of the moment of inertia of the spherical shell with evenly distributed mass is J= (2/3) mR ² Therefore, the moment of inertia of the table tennis ball is increased by more than 20% after the small ball is changed into the large ball, and even if the large ball is played only by maintaining the speed and rotation of the played small ball, more translational kinetic energy and rotational kinetic energy are required to be provided for the table tennis ball, namely more work is required to be done for the table tennis ball in the batting process. As the moment of inertia of a table tennis ball increases more, it becomes more difficult to manufacture and change the spin of the ball. After the big ball is changed, on one hand, the speed of the table tennis ball when the hand comes out is not easy to reach the big ball, and meanwhile, because the air resistance of the table tennis ball when the table tennis ball flies in the air is increased, the flying speed of the table tennis ball is reduced, so the playing rhythm is slowed, the player has to have faster, more accurate, more powerful and more wonderful playing methods to win the game, the traditional straight bat in the present table tennis ball age has rarely been used by high-level athletes, and both theory and actual combat indicate that the traditional straight bat has to be reformed; square straight bat in japan and korea seems to have a good force, but the holding of the bat is dead with respect to the modeling of the bat, the adjustment of the bat surface is not flexible enough, the technique of playing the ball is simple, and players holding the bat to play the ball rarely reach the peak level of the table tennis; in the big ball age of table tennis, the front and back hands of the bat are better in force, the caring surface is large, the opposing capacity is strong, the bat is in a relatively dominant state at present, but the interior of the bat is inflexible, the middle road is weaker, the front and back position is switched to the bat surface, the bat is required to be batted, in fact, the bat handle is held by the thumb and the middle finger ring finger, the forefinger is obliquely attached to the bat surface and is not in the same straight line with the bat handle, and the batting bat surface and the arm are not in the same straight line in the natural state; in recent years, there are many new types of table tennis ballsThe bat appears, and certain special playing methods are probably applicable, but the bat cannot satisfactorily meet the requirements of the big ball age of table tennis; what is the need in the big ball age of table tennis? The table tennis racket is more accurate, faster, more powerful, stronger in rotation, more in change and more attractive and attractive, and the racket is required to be established on the basis of scientific and accurate knowledge of the objective rules of table tennis movement, so that the track of the table tennis in the air under the action of gravity is basically parabolic, and the whole table tennis racket is translated along with the mass center and also rotates; the mass m of the table tennis ball, the acceleration a of the mass center and the resultant force F of the gravity elastic friction force born by the table tennis ball obey Newton's second law F=ma, the direction of the resultant force and the action time acted on the table tennis ball determine the change of the direction of the translational speed, namely the speed of the table tennis ball is determined by the initial speed, the direction of the resultant force and the action time; the moment of inertia J, angular acceleration beta and friction force M of the table tennis ball on the rotating shaft passing through the center of mass obeys the rotation law M=Jbeta, and the moment and the action time determine the change of the angular velocity, namely the angular velocity of the rotation of the table tennis ball is determined by the initial angular velocity, the direction of the stressed moment and the action time; when the table tennis is applied or manufactured to rotate, the table tennis rolls on the racket surface without sliding, at the moment, friction between the table tennis and the racket surface is static friction, the static friction force is variable between 0 and the maximum static friction force, and for playing the table tennis, the mechanical knowledge in the table tennis movement must be correctly understood, and the mechanical law complied with by the table tennis movement must be used voluntarily.

Disclosure of Invention

The utility model relates to a table tennis bat, which is a bat for playing table tennis and consists of a batting plate with a basically elliptical shape, a bat neck and a bat handle, and is characterized in that the overall combination shape of the bat neck and the bat handle is characterized in that the bat neck is connected with the batting plate surface like a horn mouth, and the horn tail is connected with an upper handle bar, namely, the horn shape gradually narrows from the bat shoulder of the batting plate to the middle end of a lower handle bar of the bat handle; the upper handle bar of the racket handle is shorter than the lower handle bar, the length of the upper handle bar is about two thirds of the length of the lower handle bar, the middle rear part of the upper handle bar is thick, the front end of the upper handle bar is thin, the front end of the upper handle bar is narrower than the horn-shaped racket neck, and the whole upper handle bar is in a split wedge shape; the front end of the lower handle bar of the racket handle extends into the racket neck, the rear end of the lower handle bar is thicker, and the thicknesses of the front end and the middle part are equivalent to those of sponge and rubber stuck on the lower surface of the bottom plate; the upper handle bar and the lower handle bar of the racket handle are bilaterally symmetrical along the central axis, are thick near the central axis and thin at two sides, are asymmetric to the bottom plate, are narrowest in the middle of the lower handle bar, and have curved surfaces.

The table tennis bat can be used on two opposite sides, when one side with a shorter handle is opposite to a holding method for holding a hand and a tiger mouth and a palm, the table tennis bat is equivalent to the traditional straight bat for playing a table tennis, the table tennis bat is compatible with the advantages of the traditional straight bat in China, and is used to a table tennis fan playing the table tennis in China or is suitable for being used in the scene of coping with the traditional straight bat in China, and the table tennis bat can be held in this way; when one longer side of the racket handle is opposite to the holding method for holding the tiger mouth and the palm center of the racket, the thumb and the index finger clamp the racket neck, the middle finger clings to the racket face along the racket handle, and the ring finger and the little finger can lean against the edges of the racket neck and the racket shoulder, so that the holding is comfortable and comfortable, and the racket face is pried to move greatly by controlling the movement of the smaller racket neck part, so that the enlarging effect is formed, and the racket face has better matching effect on a 40mm table tennis; the traditional transverse racket is characterized in that the index finger is obliquely attached to the racket face, the holding is stiff and not sensitive enough, and the technical conversion is slow; the table tennis racket ball of the utility model is naturally and moderately extended by hands, and because the middle finger is highly matched with the racket surface, the force direction of the hands is directly consistent with the actual acting force direction of the racket on the ball, which practically eliminates an included angle between the force direction of the traditional straight racket player and the acting force direction of the racket surface on the ball, and theoretically eliminates system errors, which is an advanced concept in design and is more the sense of repeated actual combat, thereby improving the accuracy of the ball; because the batting plate and the arm are on the same straight line when the racket is naturally held, the batting plate is convenient to fully exert force by using the whipping effect, so that the batting plate has more power; the ring finger can assist the acceleration swing of the racket face along the tangential direction, so that the rotation of the ball is enhanced; in the age that the big ball with the diameter of 40mm is used for playing the table tennis, only one middle finger can extend into the back of the table tennis, the ring finger and the little finger naturally lean against the edges of the racket shoulder and the racket neck, the holding method is more scientific and reasonable than the holding method of transversely holding one forefinger to obliquely extend into the racket face, the racket face is adjusted quickly and flexibly, the swing and the expansion are smooth, the improvement of the technical quality of various batting is facilitated, the conversion of different technical actions is facilitated, the comprehensive and application of various technologies in real time are facilitated, and the integral attack and defense capability is enhanced; compared with other existing table tennis rackets such as a traditional straight racket and a traditional cross racket, the table tennis racket has substantial characteristics and remarkable progress.

The utility model relates to a table tennis bat which is based on the correct understanding of objective mechanical rules which are necessarily observed when playing table tennis. The elastic force direction of the racket face is perpendicular to the racket face and points to the ball center, the direction of friction force is tangential to the racket face, the direction of the resultant force of the racket face and the normal direction of the racket face have an included angle, the friction coefficients of different rubber sheets and table tennis balls are different, when the table tennis ball is to be played for coping with or making rotation, the table tennis ball rolls on the racket face without sliding, the friction force is static friction force, when the elastic force of the racket sponge rubber is fixed, the elastic force of the racket face against the ball is also fixed, the static friction force is also variable between zero and the maximum static friction force, namely, the included angle between the resultant force direction and the normal direction of the racket face can be variable between zero and a certain maximum angle, but the phenomenon of eating of the ball must occur beyond the maximum angle, namely, the ball does not walk along the swing direction, and the angle is called as a critical angle; experiments carried out by the inventor show that the friction coefficient of the new anti-adhesive rubber and the table tennis ball is between 2.0 and 2.5, the critical angle of the new anti-adhesive rubber and the table tennis ball is between 63 and 68 ℃, namely, the minimum included angle between the resultant force direction and the racket face can reach 27 to 22 degrees, namely, the ball can be wiped very thinly when the new anti-adhesive rubber is used for playing the table tennis ball, and the table tennis racket achieves the extremely high technical quality of playing the table tennis ball; the friction coefficient between the positive rubber and the table tennis ball is between 0.1 and 0.2, the critical angle is between 5 and 10 degrees, the table tennis ball is not easy to manufacture and change in rotation, and the swing direction is basically consistent with the normal direction of the racket surface. The resultant force direction and the action time jointly determine the change amount of the translational speed of the table tennis, different balls rotate differently, and the moment direction and the action time of the friction force jointly determine the change amount of the angular speed of the table tennis; the tilt angle of the racket surface of the table tennis racket is good, the racket surface can be accelerated and swung along the tangential direction during the racket swinging, and the rotation with different strengths can be conveniently handled or manufactured, so that the technical and tactical technique of playing the table tennis is more colorful, and the table tennis movement charm is endless.

Compared with the straight-held table tennis bat with the patent number ZL201510621275.1, the table tennis bat also has new substantial characteristics and obvious progress; the front end of the lower handle bar of the original straight-held table tennis bat is slightly thicker than the middle part, and the middle part is thinnest in order to limit the forward movement of the hand-held bat; the thicknesses of the front part and the middle part of the lower handle bar are equivalent to those of the lower surface of the bottom plate when the sponge and the rubber are attached, but the width of the racket handle is narrowest in the middle part of the lower handle bar, namely the rear end of the racket handle is slightly wider than the middle part of the racket handle, and the front part of the racket handle is wider than the middle red part of the racket handle, so that the front movement of a gripping hand can be limited, and the novel advantage is realized; because the friction coefficient between the new anti-glue rubber and the table tennis ball is more than 2, namely the friction force of the racket to the table tennis ball along the racket surface can be more than twice of the elastic force of the racket along the normal direction when the ball is hit, the racket is required to swing along the racket surface to have enough amplitude for matching; if the table tennis ball itself rotates before the ball is hit by the racket, the rotation strength of the table tennis ball needs to be increased along the original rotation direction of the table tennis ball, namely 'adding rotation', the tangential speed of the racket surface during ball hitting of the racket must be greater than the linear speed of the ball at the ball contact point of the racket and the ball, the racket surface can effectively push the ball to increase rotation, and the requirement on the acceleration swing of the racket along the racket surface is higher; the middle finger is more matched with the racket surface when the table tennis racket is held relative to the straight table tennis racket, and both sides of the racket handle are inward in a concave arc shape, so that the racket surface can swing in a tangential direction along the racket surface in an accelerating way, and the rotation strength of the table tennis is increased; the utility model relates to a table tennis bat which is a requirement for high-level development of the table tennis technology.

Drawings

Other details and features of the table tennis bat of the present utility model will become apparent from a reading of the following detailed description of the embodiments when taken in conjunction with the accompanying drawings. Wherein:

fig. 1 is a front view of the table tennis bat of the present utility model.

Fig. 2 is a side view of the table tennis bat of the present utility model shown in fig. 1.

Fig. 3 is a rear view of the table tennis bat of the present utility model shown in fig. 1.

Fig. 4 is a top view of the table tennis bat of fig. 1 of the present utility model.

Detailed Description

Referring to fig. 1 to 4, the table tennis bat of the present utility model is composed of a striking plate 1 and a handle 2. The striking plate 1 is composed of a sponge layer 12 and a rubber layer 13 on the upper and lower surfaces of a wooden soleplate 11. Of course, depending on the preference of the player, the sponge and rubber on the upper and lower surfaces of the base plate may be the same or different. The racket handle 2 is composed of a handle 21 integrally formed with the striking plate base 11, and an upper grip 22 and a lower grip 23 respectively adhered to the handle 21. As is apparent from fig. 4, the rear end cross-sectional shape of the racket shaft 2 is similar to that of a conventional racket, and is close to an oval shape. The rear part of the upper handle bar of the racket handle is thicker, the front end is in a wedge shape with a convex middle, meanwhile, the U-shaped equal thickness line can be seen from the figure 1, the same U-shaped equal thickness line part shows that the thickness of the handle bar is the same, and the whole surface of the upper handle bar is in a convex curved surface. It can also be seen from fig. 2 that the front end and the middle part of the lower handle bar of the racket handle are thin, the thickness of the lower handle bar is equivalent to the total thickness of the sponge and the rubber on the bottom plate, the rear end of the lower handle bar is thicker than the front end and the middle part, the front end face forms an inclined angle, and the front end of the lower handle bar stretches into the part between the horn-shaped racket necks 3-5 and 4-6 of the bottom plate so as to ensure that the racket handle and the batting plate cannot be broken and damaged. Meanwhile, as can be seen from fig. 3, the arc curve represents the equal thickness line of the lower handle bar, and the same arc curve part represents the smooth curved surface of the upper and lower handle bars with the same thickness along the central axis of the racket handle and with two thin sides. From both fig. 1 and fig. 3, it can be seen that the trumpet-shaped claps 3-5 and 4-6, the handle 21, the upper handle bar 22 and the lower handle bar 23 are narrowest in the middle and have concave curves on both sides, so that the claps are stable, flexible and good in hand feeling.

Claims (1)

1. A table tennis bat consists of a batting plate with a basically elliptic shape, a bat neck and a bat handle, and is characterized in that the bat neck and the bat handle are integrally combined in shape, the bat neck is connected with the batting plate surface like a horn mouth, and the horn tail is connected with an upper handle strip in a horn shape, namely, the bat neck of the batting plate is gradually narrowed from the batting plate to the middle end of a lower handle strip of the bat handle; the upper handle bar of the racket handle is shorter than the lower handle bar, the length of the upper handle bar is about two thirds of the length of the lower handle bar, the middle rear part of the upper handle bar is thick, the front end of the upper handle bar is thin, the front end of the upper handle bar is narrower than the horn-shaped racket neck, and the whole upper handle bar is in a split wedge shape; the front end of the lower handle bar of the racket handle extends into the racket neck, the rear end of the lower handle bar is thicker, and the thicknesses of the front end and the middle part are equivalent to those of sponge and rubber stuck on the lower surface of the bottom plate; the upper handle bar and the lower handle bar of the racket handle are bilaterally symmetrical along the central axis, are thick near the central axis and thin at two sides, are asymmetric to the bottom plate, are narrowest in the middle of the lower handle bar, and have curved surfaces.

Images