Current location - Trademark Inquiry Complete Network - Trademark registration - Introduction of table tennis table size and net device
Introduction of table tennis table size and net device
First, the standard size of table tennis table

Generally speaking, the size of table tennis table is: length: 2740mm (2.74m); ; Width:1525mm (1.525m); Height: 760 mm (0.76 m); Clear height: 1525mm (1.525M).

The clear height here refers to the distance from the net to the ground, while the distance from the table to the ground is 0.76m, the net length is 1.83m, and the net height is 0.1.525 m. ..

Net device of table tennis table

(1) The net device includes a net, a net hanging rope, a net post and a fixture component for fixing them on a table.

(2) The net should be hung on a rope, and both ends of the rope should be tied to an upright net column with a height of 15.25 cm, and the distance from the outer edge of the net column to the outer edge of the sideline is 15.25 cm.

(3) The top distance of the whole net from the table 15.25cm.

(4) The bottom edge of the whole net is as close to the table as possible, and both ends are as close to the net column as possible.

(5) Draw white lines with a width of 0.02m on the four sides of the table, and there is a middle line with a width of 0.003m parallel to the long side of the ball in the middle of the table.

Second, the price of table tennis table

Because table tennis is the national sport of China, it is very popular with the public, so the market of table tennis is huge. There are many good table tennis brands in China, including Double Happiness, 729 and Pisces. These brands have cheap simple folding table tennis tables ranging from 1000 yuan to 1500 yuan, which are suitable for amateurs, and some are slightly professional, ranging from 1500 yuan to 3,000 yuan, and some are relatively high-end.

Of course, there are many excellent table tennis brands abroad, and some friends love these brands. Daunic, Butterfly, Euler, etc., which we are familiar with, are all world-famous professional brands, with excellent reputation and guaranteed quality in the industry, but the price is also relatively expensive, about 8,000 yuan to 20,000 yuan. Of course, the price, style and color of table tennis are inseparable, and the price of green table tennis is generally more expensive.

Practical skills of table tennis match

1. You'd better loosen the racket when serving.

Many table tennis veterans will release their rackets when serving. Why? How loose? The plane of the wrist rotation direction is perpendicular to the straight line of the arm. After hitting the ball, you should bump your body slightly, so that you can relax well and return to the standard preparation action. In order to hit your body, your heel should be raised at the moment of hitting the ball. There are four feelings in playing ball: staring at the ball to judge the incoming ball, moving the foot, hitting the ball and restoring it.

2. Laga turns the ball and squats his legs.

When squatting, first step sideways to make way for the kick-off, then squat down with your legs instead of 1 leg arch and 1 leg pedal, lean slightly to one side, relax and sink your right shoulder, and pedal your right leg quickly! When the center of gravity shifts from the right foot to the left foot, don't let your body jump when your right foot touches the ground. You should feel that the center of gravity is moving in parallel.

The racket should be guided along the falling trajectory of the ball, and the ball will fall to the right position and then be pulled up, so that it is not easy to leak. The essentials of downward rotation and arc circle action: adjust the position sideways. Squat your legs. Relax your arm. Push up. Put your ears up. Before pulling the ball, first adjust the footwork and hitting position, and the racket arm should be straight.

3, serve action standard specification

One-handed throwing action: the throwing height is greater than or equal to 16cm, and the throwing action should be outside the end line of the table, higher than the table top and vertical. Swing action of the other hand: According to the new rules, it should be higher than the table, and the referee and the opposing athlete in the middle of the two sides should be able to see the action clearly.

4, a quarter of the law

When you start practicing forehand attack, you should remember 1/4. First, the trajectory of arm swing is 1/4, and the racket friction ball is also 1/4 of the ball. The arm swing is relaxed to the starting position according to the original arc of 1/4-coach Lu takes the end line as the diameter, the middle line and the middle line on the ball table. Then face the wall, get ready to attack the ball with your own height, draw a horizontal line of 1 with waist height and eyebrow height as the highest point, and draw an arc. This is a frontal projection.

In forehand attack, the right thumb is pressed down, the index finger is relaxed, and the middle finger is at the top. In the process of drawing 1/4 arc, the thumb and middle finger have the fine adjustment action of 1/4 arc, and the upper part of the ball is hit with 1/4 arc. At the same time, the forearm should also rotate in 1/4 arc.

The harder you hit, the more you press down.

The harder you push, the more you have to push the swing down, not up, and the more you have to hold the ball down and lean forward than when you push hard. When you hit the ball, you should bend your wrist a little, so that the ball can go faster.

6. More experienced grinding ratio

When you don't rush, you will feel that hitting the ball forward can make up for the speed, which is a bit like drinking poison to quench your thirst. In fact, hitting the ball too much can easily lead to bad arcs and many mistakes. Moreover, because the rotation is not strong, the forward thrust of the pulled ball is not strong, especially outside the table. Too much friction will lead to full speed and low strength.

Table tennis standard weight

Table tennis standard weight:

According to the quality index of table tennis, ITTF divides the ball into three grades, which are expressed by stars to adapt to different occasions. Among them, the highest level is 3 stars. Specifically:

Samsung ball: The weight is between 2.64 and 2.53g, the roundness error is less than 0. 15mm, and the hardness value is less than 0.80mm It is the designated ball for ITTF professional competition.

Two planets: the weight is between 2.40 and 2.53 g, the roundness error is less than 0.25mm, and the hardness value is less than 0.90 mm, which is suitable for major domestic competitions and professional training of national teams.

A planet: The weight is between 2.35 and 2.63g, the roundness error is less than 0.25mm, and the hardness value is 1. 10mm, which is suitable for amateur competitions or fitness in table tennis rooms, schools, troops and units.

How to change the weight of table tennis bat;

Adjust the weight of the racket by changing the thickness of the bottom plate or the size of the board surface: If you want to reduce the weight of the racket, you can also reduce the racket surface appropriately. The traditional racket face is relatively large. Shortening the face length of the racket bottom plate to about 155mm and reducing the face width to about 150mm can reduce the weight of the racket. If the weight of the racket is relatively light, consider adding a layer of wood on the back of the bottom plate to increase the thickness of the bottom plate to improve the weight of the racket. For technical reasons, it is difficult to reduce the thickness of the bottom plate or increase the plate surface. Of course, changing the size of the racket face and the thickness of the bottom plate must be prepared to pay the price of changing the hitting performance of the racket. Reducing the racket face will make the racket feel hard, and increasing the thickness of the bottom plate will increase the hitting elasticity of the racket.

Adjust the weight of rubber sponge: As far as rubber is concerned, I have measured the weight of a well-known brand in China, and found that there is an error of about 5g between more than a dozen pieces of rubber with the same model, thickness and sponge hardness, so we can adjust the overall weight of the racket by choosing the weight of rubber sponge.

Adjust the center of gravity of the racket: the normal center of gravity of the racket is conducive to improving the good hitting feeling. As far as the bottom plate is concerned, the normal weight balance point of the bottom plate should be between 43-50% of the total length of the bottom plate. The measurement method is: place the bottom plate flat on the edge of a ruler, and keep the direction of the bottom plate handle at a 90-degree angle with the ruler. Move the bottom plate back and forth at the edge of the ruler to find the weight balance point of the bottom plate. After finding the balance point, measure the length from this point to the top of the plate head, and then divide the side length by the total length of the bottom plate. If the calculated percentage is between 43% and 50%, it belongs to the normal center of gravity range.

Generally, the balance point of gravity of traditional backhand with sponge rubber on one side is between 43-46%; However, the balance point of gravity of the horizontal racket or the straight racket with sponge glue on both sides is mostly between 46-50%. If the balance point of gravity of your soleplate is lower than the above 43% or 46%, users will feel that the racket head is overweight. If the balance point of the center of gravity of the bottom plate is higher than the above 46% or 50%, the user will feel that the racket head is too light. For a racket with an overweight head, you can choose a lighter sponge rubber or adjust it by lengthening the weighted handle. Someone added two thumbtacks to the top of the racket handle to adjust the center of the racket. For a racket with a light racket head, you can choose a heavier sponge rubber or use a "metal edge guard" to adjust the center of gravity.

Adjusting the weight of the racket can be done by yourself or entrusted to a professional department. Some table tennis equipment stores have begun to provide this service. For example, Shiaode Store of Cai He Sports Development Service Center provides the service of refitting rackets.

Of course, if the weight of the racket is too heavy or too light, the performance of the racket is not very good. Our suggestion is to re-select a more suitable racket, otherwise it will take time and effort to achieve satisfactory results and will not disappoint people.

Table tennis standard court

Table tennis court: The space of the playing field should be rectangular, with a length of not less than 14m, a width of 7m and a height of 5m, and the four corners can be enclosed by baffles not more than1.5m.. ..

In addition, the upper surface of the table is called the game table, which is 2. Length 74m, width 1.525m, 0. 76m above the ground, as shown in figure 1- 1- 1. There is a white edge line with a width of 2 cm along each 2.74m desktop edge and a white end line with a width of 2 cm along each 1.525m desktop edge. The table is divided into two equal "half areas" by a 3 mm wide white center line. The midline is parallel to the sideline and should be regarded as a part of the right half.

Brief introduction of table tennis

Table tennis originated in England. /kloc-At the end of 0/9, tennis was all the rage in Europe. However, due to the limitation of venue and weather, some college students in Britain move tennis indoors, using the dining table as a table, books as a net, parchment as a racket and playing around the dining table. 1890, several British naval officers stationed in India came across that playing tennis on a small table was quite exciting. Later, they used solid rubber instead of solid balls, then hollow plastic balls and wooden boards instead of rackets to play this novel "tennis match" on the table, which is the origin of the name table tennis.

Soon after its appearance, table tennis became a popular sport. At the beginning of the 20th century, the United States began to produce complete sets of table tennis equipment. Table tennis is the number one grip sport in the United States, and more than 200,000 Americans play table tennis. At first, table tennis had other names, such as indoor tennis. Later, an American manufacturer created the new word "Ping-Pong" by the sound made when ping-pong was struck, which became another official name of ping-pong. When table tennis was introduced to China, people created a new word-table tennis.

Many words in table tennis come from tennis. The ball used in table tennis is called table tennis, the table is called table tennis table, the table is called court, the net in the middle is called net support, and table tennis is called table tennis bat.

Table tennis singles usually adopt two wins in three games or two wins in five games (2 1 minute per game), but in 2006, it was changed to two wins in seven games or two wins in five games (1 1 minute per game). The so-called "game" is to set and serve in English.

Among all kinds of table tennis competitions, the most famous is the World Table Tennis Championships, which was held once a year at first, and changed to be held every two years after 1957.

Table tennis standard serve

Forehand serve

1, features: fast ball speed, long landing point, strong impact, sent to the opponent's right corner or left center position, posing a great threat to the opponent.

2. Key points:

① Don't throw the ball too high;

(2) improve the swing speed at the moment of hitting the ball;

③ The first landing point should be close to the end line of our table;

(4) the point is equal to or slightly lower than the net.

Short hair ball

1, features: small hitting action, quick shot, the second jump will not come out after the ball lands on the opponent's table, and it is difficult for the opponent to pull, rush and attack.

2. Key points:

① Don't throw the ball too high;

② When hitting the ball, the strength of the wrist is greater than that of the forearm;

③ The first landing point of the serve is on the table, not too close to the net;

(4) serve as similar as possible to serve long balls, which makes it difficult for opponents to judge.

Forehand serve left topspin (topspin).

1, features: strong up (down) rotation force on the left side. When the opponent blocks, he rebounds to the right, usually standing on the left side of the center line or serving sideways.

2. Key points:

① Close your abdomen when serving, and don't hit the ball away from your body;

② Try to increase the amplitude and radian of swinging from right to left, so as to enhance the lateral rotation force.

(3) When the ball is topspin on the left side, the wrist is quickly adducted at the moment of hitting the ball, and the racket rubs from the center of the ball to the upper left. (4) When the left hair rotates downward, the racket leans back and rubs from the middle and lower part of the ball to the left and lower part.

The backhand serves the top right (bottom) spin.

1, features: the top (bottom) spin ball is strong on the right side, and the opponent rebounds to its left side after blocking it. It is best to serve with a long left oblique ball and a short right near tennis ball.

2. Key points:

(1) Pay attention to the movements of the abdomen and waist;

② Make full use of wrist rotation and forearm strength;

(3) When the right side rotates the ball up and down, the racket rubs from the middle of the ball to the upper right at the moment of hitting the ball, and the wrist has a hook action;

(4) When serving a right-handed ball, the racket face leans back, and the racket is wiped from the middle and lower part of the ball to the right at the moment of hitting the ball.

Backhand serve and serve backspin.

1, features: fast ball speed, low arc, large forward thrust, forcing opponents to retreat to catch the ball, which is beneficial to attack, and is often used with sharp backspin.

2. Key points:

(1) The hitting point should be on the left front side of the body, with the same height as the net or slightly lower than the net;

② Pay attention to the shaking force of wrist;

(3) The first landing point is near the terminal line of the local station area.

Forehand service and not turning around

1, features: slow ball speed, small forward momentum, and similar serve actions are mainly used to create rotation changes to confuse opponents, cause opponents to make mistakes in receiving serve or create opportunities for themselves.

2. Key points:

① Don't throw the ball too high;

(2) When serving, the racket face will be pressed backwards, and the middle and lower part of the ball will be cut; The more the spinning ball is added, the more attention should be paid to the forward movement of the arm;

(3) When the ball can't be served, the backswing angle decreases at the moment of hitting the ball, and the force of pushing forward increases.

Forehand high throw serve

1, features: the most obvious feature is high throwing, which increases the positive pressure on the racket when the ball lands, and has fast serving speed, great impulse, great rotation change, and turns after landing. However, the high throw serve is complicated and difficult.

2. Key points:

Don't throw the ball too far away from the table and body.

② The hitting point is equal to or slightly lower than the net, preferably at the middle right side of the waist (15cm).

③ Try to increase the amplitude and radian of the internal pendulum.

(4) The left topspin and backspin are the same as the low toss. ⑤ After touching the ball, adding a recovery action to the right front can increase the opponent's judgment (combined with right rotation, it is more powerful).

Squat serve

1, features: Squat serve belongs to overhand serve, which was used by China athletes as early as 1950s. It is more convenient for a horizontal racquet player to serve the squat ball than a straight racquet player. The backhand player needs to change the grip when serving, that is, move the index finger behind the racket. Squat serve can be left-handed and right-handed, which is very threatening when the opponent is not adapted. When you serve a high-quality ball at a critical time, you can often score directly.

2. Key points:

① Pay attention to the coordination of throwing and swinging, and grasp the timing of hitting the ball.

(2) The service quality and the service action should be neat, in case you are attacked by the opponent before you stand up completely.

(3) When the right side of the serve is spinning up and down, the left foot is slightly forward and the body is slightly deflected to the right, and the swing route is from left back to right front. The middle part of the racket touches the ball and rubs to the upper right, indicating that the right side rotates upward; The friction from the middle and lower part of the ball to the right is the lower right rotation.

(4) When the left side of the serve spins up and down, the position standing on the middle right side is slightly flat to the left, the body basically faces the table, and the swing route is from right back to left front. The friction of hitting the ball is that the left hand rotates upward; The friction from the middle of the ball to the lower left is to rotate to the lower left.

⑤ When the left (right) side spins the ball up and down, special attention should be paid to the quick semi-circle rubbing action.