2. The ball should have 16 feathers fixed on the ball holder.
3. The feathers are 62-70mm long, and the length of each ball's feathers from the ball support surface to the tip of the feather should be the same.
4. The top of the feather is round, with a diameter of 58-68mm.
Feathers should be tied with thread or other suitable materials.
6. The bottom of the ball holder is spherical with a diameter of 25-28mm.
7. The ball weighs 4.74-5.50g. ..
8. Non-badminton:
8. 1. skirts made of synthetic materials or spheres made of natural feathers.
8.2. The tee is as stated in Rule 6.
8.3. The size and weight of the ball shall comply with rules 3, 4 and 7; However, due to the difference in specific gravity and performance between synthetic materials and natural feathers, the error cannot exceed 10%.
9. As long as the general style, speed and flight performance of the ball remain unchanged, the standard ball may not be used under the following special circumstances with the approval of the relevant organizations.
9. 1. When the standard ball is not applicable due to the weather conditions at altitude;
9.2. Only when the change is beneficial to competition. Edit this paragraph | Back to the top to develop badminton court
1. Venue: The badminton court is rectangular, and the width of each line is 4cm. No obstacles are allowed in the range of 12m above the court and 4m around it. The clear height of the center of the court is1.524m, and the clear height of the doubles sideline is1.55m. ..
Step 2 equip
The ball weighs 4.74g ~ 5.5g, and 16 feathers are inserted in the hemispherical cork tray. The ball is 68-78mm high and 58-68mm in diameter, which is divided into 65,438+0-65 and 438+00. The total length of the racket frame is no more than 68 cm, the width is no more than 23 cm, the racket face is no more than 28 cm and the width is no more than 22 cm.
(B) Introduction of badminton competition methods and main rules
1. events: men's singles, women's singles, men's doubles, women's doubles, mixed doubles, men's teams and women's teams.
2. The scoring methods and rules of the new competition:
(1) Similar to the previous table tennis scoring method, the scoring system of 2 1 is adopted, that is, the scores of both sides reach 2 1 first, and two wins in three games. After each game is tied at 20, if one side leads by 2 points, the game will win; If the two sides are tied at 29 and one side leads 1 point, the game will be won.
(2) In the new competition system, every ball is scored. Except for special circumstances (such as the floor is wet and the ball is broken), players can no longer ask to interrupt the game. However, when one side leads 1 1 in each game, 1 minute will be suspended to allow both sides to wipe their sweat and drink water.
(3) The scorer has the right to serve. If the scorer scores an odd number, serve from the left; Double the score and serve from the right. In the third or only one game, when the score of one side reaches 1 1 first, the two sides exchange venues.
(4) There are many changes in the rules of doubles, and the text is difficult to express, so it can't be mapped for the time being, so it is omitted here.
① When doubles and men's singles are tied for 13 or 14 (women's singles are tied for 9 points and scored 10), the player who gets 13 or 14 (women's singles score 9 points or 10) first can choose ". (2) This choice can only be made before the specified score appears for the first time and the next serve. ③ If the draw is 13 (women's singles 9), don't choose "rematch". If the draw is 14 (for women's singles, 10), those who score 14 (for women's singles, 10) can still choose "rematch".
(5) After selecting "rematch", scores will be reported from "0 to 0", and the player who gets the "rematch" score first wins.
① 13 draw lots, and the first team will give 5 points. (2)14, one side will get the third point if it is tied. 39. The draw will last until one team scores 3 points first. ④ 10 draw, and the first team scored 2 points.
(6) Starting from the next game, the winner of the previous game will serve first.
3. Position in the competition:
Single:
(1) When the server scores 0 or even, both players should serve or receive the service in their respective right service areas.
(2) When the server scores an odd number, both players should serve or receive the service in their respective left service areas.
(3) In case of "rematch", the server will determine the ranking according to the total score of the match. If the total score is 15 (odd number), both players should serve or receive from their respective left tees; If the total score is 16 (even number), both players should serve or receive the service from their respective right service courts.
(4) After serving, the players of both sides are no longer restricted by the service court, and can hit any position of the opponent's court freely, and players can also stand in or outside their own court.
Doubles:
(1) At the beginning of a match, both the winning side and the other side should serve from the correct service court.
(2) Only the receiver and the receiver can receive the service; If the opponent catches the ball or is hit by it, the server scores one point.
(1) The player who serves first at the beginning of each game must serve or receive the service in the correct service court when his team scores 0 or even; When the score is odd, you should serve or receive the service from the left tee.
(2) The player who receives the service first at the beginning of each game must receive or serve in the correct service area when his score is 0 or even; When the score is odd, you should receive or serve in the left service area.
(3) The above two completely opposite forms of standing are suitable for your partner.
(3) After the local server loses the right to serve in any match, the server will serve the player first, then serve the player's companion first, then serve by one of their opponents, and then serve by another opponent, thus transferring the right to serve.
(4) An athlete shall not make a mistake in serving, and shall not serve twice in the same game.
(5) The player who wins a game can serve first in the next game, and the player who loses can receive the service first.
(6) After serving, it is no longer restricted by the service area. Athletes can stand freely in their own field and hit the ball anywhere on the field.
4. Rules of the game:
(1) exchange
① Athletes should exchange venues under the following circumstances:
First, the end of the first game.
Two. The third game begins.
Three. In the third game or just one game until one side reaches 1 1.
(2) The athletes failed to change venues according to the above rules, and it has been found that they should change venues immediately in order to get scores.
(2) Legal services:
When serving, neither side shall illegally delay serving.
Both the server and the receiver must stand in the diagonal service area to serve and receive the service, and their feet must not touch the boundary of the service area; Part of your feet must touch the ground and you can't move before serving.
The server's racket must be hit on the bearer first, and the whole ball must be lower than the server's waist.
④ At the moment of hitting the ball, the club should point downward, so that the whole rack is obviously lower than the whole grip part of the server.
⑤ After serving, the server's racket must keep swinging forward until serving.
⑥ The serve must fly upward over the net. If it is not intercepted, it should fall into the service area of the receiver.
(3) Badminton violation
1 serve is illegal.
② The server misses the ball when serving.
③ When serving, the ball hangs on the net or stops at the top of the net after passing through the net.
④ During the competition:
The ball landed outside the sideline of the court.
Two. The ball passes through the mesh or under the net.
Three. The ball never crossed the net.
Ⅳ. The ball hits the roof, ceiling or surrounding walls.
ⅴ. The ball touches the athlete's body or clothes.
ⅵ. The ball touches other people or things outside the venue (due to the structural problems of the building, the local badminton organization may formulate provisional regulations on badminton touching the building when necessary, but its national organization has the veto power).
⑤ In the game, the initial contact point of the racket or the ball is not on this side of the batter's net (after the batter hits the ball, the racket can take the ball across the net).
⑥ During the competition:
The player's racket, body or clothes touch the net or the net support.
Two. An athlete's racket or body intrudes into the opponent's field to any extent.
Three. Obstruct an opponent, for example, from legally hitting the ball near the net.
⑦ During the competition, an athlete deliberately distracted the opponent's attention, such as shouting and posturing.
8 During the competition:
First, when hitting the ball, the ball is caught or stuck on the racket and then dragged.
Two. The same player swings the ball twice in a row.
ⅲ. Two players from the same team hit the ball once in a row.
Ⅳ. The ball hits the racket and continues to fly to the backcourt.
Pet-name ruby athletes violated the rules of competition continuity.
The athletes present misbehaved.
(4) Serve again:
(1) in case of unforeseen or unexpected circumstances, serve again.
② In addition to serving, if the ball hangs on the net or stops at the top of the net, it should be served again.
(3) When serving, the server and the receiver foul at the same time and should serve again.
When the receiver is not ready, the server should serve again.
⑤ In the game, the ball disc is completely separated from the rest of the ball, and the service should be re-served.
⑥ When the linesman can't see the landing point of the ball clearly and the referee can't make a decision, he should serve again.
⑦ When re-serving, the last service is invalid, and the original player will serve again.
(5) Dead ball:
① The ball touches the net and hangs on the net, or stops at the top of the net.
② After the ball hits the net or net post, it starts to land on the hitting side.
③ The ball touches the ground.
4 "violation" or "heavy serve".
(6) Service area error:
① Service order error.
② Serve from the wrong tee.
Prepare to receive the service in the wrong service area, and the opponent's ball has already served.
(7) The method of judging the wrong service area:
① If mistakes are found before the next serve, serve again; If only one party makes a mistake and loses this round, the mistake will not be corrected.
If no mistakes are found before the next serve, they will not be corrected.
(3) If the service is "re-served" due to an error in the service area, the round will be invalid, and the service will be re-served after correcting the error.
(4) If the service court error is not corrected, the game will continue without changing the players' new service court and new service order.
Badminton should have 16 feathers fixed on the ball support, and the length of the feathers is 64 mm to 70 mm, but the length of the feathers of each ball should be the same from the support surface to the tip of the feather. The top of the feather is round, the diameter is 58 mm to 68 mm, the diameter of the ball holder is 25 mm to 28 mm, and the bottom is round. The weight of badminton is 4.6 g to 5.50 g. For non-badminton, we need to make it into a skirt, and the quality and performance should not exceed 10\%. For the game ball, it must be tested before it can be used. The correct way is to stand on the end line, hit the ball forward and upward with the low hand, and the flying direction of the ball is parallel to the sideline. A qualified ball should fall between 53 and 99 cm from the opponent's end line. Edit this paragraph | Go back to the common term 1. badminton court
The badminton court is a rectangular court, with a length of13.40m, a doubles width of 6.10m, and a singles width of 5.18m. The center of the court is equally divided by the net (the height of the columns on both sides is1.55m, and the height of the net is1.525).
Badminton court is horizontally divided into two halves by the middle line; Vertically divided into frontcourt, midfield and backcourt. The front court is the court between the front serve line and the net; Backcourt refers to the court of doubles from the end line to the back serve line; The midfield is the field between the front serve line and the back serve line of doubles.
3. The feathers are 62-70 mm long, and the length of each ball's feathers from the ball support surface to the tip of the feather should be the same.
4. Feather tips are round, with a diameter of 58-68mm.
Feathers should be tied with thread or other suitable materials.
6: The bottom of the ball holder is spherical with a diameter of 25-28mm.
7: The ball weighs 4.74-5.50g..
8. Non-badminton:
8. 1: skirts made of synthetic materials or balls made of natural feathers.
8.2: The bearer is as stated in Rule 6.
8.3: The size and weight of the ball shall comply with the provisions of Rules 3, 4 and 7; However, due to the difference in specific gravity and performance between synthetic materials and natural feathers, the error cannot exceed 10%.
9: As long as the general style, speed and flight performance of the ball remain unchanged, with the approval of the relevant organizations, the standard ball may not be used in the following special circumstances.
9. 1: When the standard ball is not suitable due to the weather conditions at altitude;
9.2: Only when the change is beneficial to competition.
2. Classification of badminton hair:
High-quality badminton hair must use goose knife hair. If you use duck knife hair and other rough pieces, its quality is difficult to guarantee.
The classification of ball hair is very complicated. Because there is no unified national classification and numbering standard at present, the labels of badminton produced by various manufacturers are all customized. If different manufacturers have products with the same label, it doesn't mean that their quality is the same. Take Jinhe Factory as an example: all middle and high-grade badminton, that is, products with the word "A", are made of live plucked white goose feathers. First, it is divided into large, medium and small hairs according to the hair quality, then it is divided into one, two, three and four grades according to the hair quality, then it is divided into five standards according to the warp of the hair, and then it is classified according to the thickness of the hair stalk and the thickness of the hair. The 16 feathers used in the same badminton must be of the same category and as similar as possible. The more high-end products are used, the more consistent the 16 wig is, so as to ensure the flying quality of the products. Low-grade products, that is, ordinary leisure balls, are also made of white goose nest hair and camel hair, and the processing technology is the same as that of high-grade products, ensuring aesthetics and durability.
3. Classification of badminton ball heads:
According to the materials used, there are three common types: hard plastic, foamed plastic and cork. The first two kinds are mainly used for low-grade leisure badminton with low cost and poor performance. Middle and high-grade badminton all adopt natural cork ball heads, which can be roughly divided into three categories: integral cork ball heads, composite cork ball heads and recycled cork ball heads. Their structural diagrams are as follows:
It can be seen that the best ball head is of course natural cork, and the composite ball head has low cost and is not easy to break, but if the hitting force is large, it is easy to break the lower part of recycled cork, thus affecting the hitting performance. However, the cost of recycled cork ball head is lower, and the flying performance is better than that of non-cork ball head. Although its anti-strike ability is poor, it can meet the needs of specific users. For example, the 204A produced by Jinhe Factory is a low-priced medium-performance badminton suitable for beginners. Considering that beginners' hitting power is generally not too great, the main reason for badminton damage is that it is easy to hit the ball hair, so the regenerated cork ball head is not easy to crack, and its flying performance can fully meet the practice. Of course, the strength of cork ball heads recycled by different manufacturers sometimes varies greatly due to different production processes. In recent years, the ball head manufacturer has developed a ball head made of bionic plastic and natural cork, which is cheap and good, and the effect is ideal.
4. Identification of badminton Mao Mao quality;
High-quality badminton feathers must use high-quality goose feathers. The strength and toughness of goose feather are especially suitable for badminton, but its cost is high and the supply of raw materials is limited, so some badminton manufacturers with low requirements use duck feather. It is difficult to distinguish duck feathers from goose feathers only by appearance, and the well-made duck feather badminton has good flight performance. Because the hair stems of the two kinds of hair pieces are different, their impact resistance is much worse than that of goose feather badminton, and they are easy to break in normal hitting because of the price of duck feather.
5. The difference between badminton glue:
The quality of glue directly affects the firmness and durability of badminton. Glue used in badminton production can be divided into two categories: advanced resin glue and chemical glue. High-grade resin adhesive is superior to chemical adhesive in hardness and firmness, but its cost is relatively high, and it is generally used to make high-grade badminton. For example, 200A and 20 1A badminton made by Jinhe Factory are high-grade resin glue, while other kinds of badminton are high-strength chemical glue. In order to ensure the quality, the glue content of each badminton is higher than the requirements of national standards.
6. Quality inspection items of finished badminton:
Test items generally include: stability, impact resistance, weight, caliber, speed, adhesion fastness, hook fastness, etc. The manufacturers of these projects generally do not and do not need to test them item by item. When consumers buy badminton, they can test and compare their most concerned qualities according to the above items.
7. The difference between high-grade products and low-grade products:
Apart from the appearance, the main difference lies in the flying performance of the ball, that is, stability, speed, deformation when hitting and rotation when flying. High-grade badminton requires a lot of wigs, and the appearance and quality of wigs on a ball 16 are similar, so as to ensure the high standard requirements of badminton, which leads to its higher price.
8. The relationship between speed, weight and caliber of badminton;
In the same area, the flying speed of badminton mainly depends on its overall weight, caliber, hair type, the difference between the left and right hairs, and the weight ratio of the ball head to the ball body. Generally speaking, the caliber of badminton manufactured by the same factory is fixed. For example, the caliber standard of Golden Carved Badminton is 66.5mm±0.5mm, that is, 66-67 mm. At this time, the main factors that determine the ball speed are the overall weight of the ball and the weight ratio of the ball head to the ball body. So according to the overall weight of the ball, we can know its approximate flying speed and where it is suitable.
9. What kind of badminton should I choose in different altitude climate areas?
The most basic requirement of badminton is that the speed or weight of the ball used must be appropriate, otherwise many techniques will be difficult to play. Badminton with the same weight will fly at different speeds in different areas, because the weight of the ball is closely related to altitude and climate. The high air density at high altitude will reduce the air resistance when badminton flies, so the weight of badminton used at high altitude will be reduced. At low altitude, the air density is high, and the air resistance of badminton in flight is great, so the weight of badminton used at low altitude is heavier. Take the golden eagle products as an example: Shanghai: 5.2g, Guangzhou: 5. 1g, Kunming: 4.7g, Chengdu: 4.9g. In addition, the air humidity and temperature also have certain influence on the speed of badminton, but the altitude has the most obvious influence.
10. What are the disadvantages of using heavy badminton or light badminton to the racket and human body?
The overall weight of badminton is too heavy or the ball head is too heavy, which will cause great vibration when hitting the ball, which will have a great impact on the badminton racket and badminton line and reduce the service life of the badminton racket and badminton line. The most obvious thing is that the service life of badminton line will be greatly shortened. On the other hand, long-term vibration will be transmitted to the batter's arm, which will also have some bad effects on the arm. If the weight of badminton is too light, because the ball is not in place, the batter will send out more strength to achieve the goal of hitting the ball in place, which will easily cause fatigue and injury to the arm. So choosing the right weight badminton can not only make you enjoy badminton better, but also reduce your risk of injury.
1 1. What's the manufacturing process of badminton?
The production technology of badminton is divided into three parts: wool making, head making and combination.
Wool making process: wool washing, drying, wool selection, wool washing, classification, warping and wool mixing.
Head making process: grinding, repairing, wrapping, baking, peeling, drilling and weighing.
Combined technology: hair planting, glue injection and drying, thread hooking, adjustment, glue brushing and drying, head wiping, edge winding, weighing, applique, finishing, stability testing, weighing, packaging and warehousing. Edit this paragraph | Return to the top
Edit this paragraph | Precautions for Novice Heading 1) Try to hit the ball in front of your body, and never let it fall below your neck, otherwise the returned ball will have no attack power.
2) Hold the racket with both hands as relaxed as possible to maximize the strength of the wrist.
3) In singles, return to the center position immediately after each stroke. When defending doubles, you should return to the position parallel to your partner, and when attacking doubles, you should keep your partner's position before and after. When serving doubles, you should immediately block the net forward after serving the short ball to prevent the opponent from hitting the short ball back.
4) In singles, unless you spike, never hit the ball in the opponent's midfield. Try to hit two corners.
5) When making a powerful forehand or backhand stroke, the body should turn to the hitting side to stand firm.
6) The singles serve should be as high and far as possible, the doubles serve should be short, the flight route of the ball should be close to the upper edge of the net, and the serve should be changeable.
7) Try to confuse each other with fake actions within the scope permitted by the rules, but don't expose your intentions in advance.
8) When playing golf, you should accurately judge the flying direction of the ball, try to hit the ball higher and close to the opponent's bottom line.
9) When hanging the ball in front of the net, the route of the ball should be short and as close as possible to the net.
10) Spike as far away from the opponent as possible or directly hit the opponent's grip or shoulder.
1 1) When you are at a loss or need a short breath, you can hit a high ball and then return to the center of the court.
12) for beginners, the backhand end line is usually a weak area, so pay attention.
13) When you return the lob in the frontcourt, you should try to use spike, which is an important way to score, but don't play the lob at the baseline, which will usually give the opponent a chance to kill the ball.
14) Many athletes have their own unique style of play. They should be good at judging the impact of the ball and get into the right position in time, but never expose their movements too early.
15) When you receive the service in doubles, you should lift the racket to force the opponent to serve low. If the opponent serves too high, you should immediately go forward and kill.
16) If you are scoring, don't change your play. If you are losing, you should immediately adjust your gentle play. If your continuous attack doesn't work, you can hit a high ball and then find a fighter to attack again. Edit this paragraph | Go back to the top to explain the classification of badminton feathers in detail (grade difference of raw materials):
1, goose feather material: Chinese mainland feather is divided into three major producing areas.
Sichuan wool: April-July every year.
East China wool: (Anhui, Jiangsu, Zhejiang), from July to 10 every year.
Northeast wool: (three northeastern provinces), 65438+1October-65438+February every year.
Badminton with good hitting and proper weight is mainly made of Sichuan hair, and badminton with durable and beautiful appearance is mainly made of Northeast hair.
What suits you is the best. Go and choose one!
2. Feather cutting rate: A duck has left and right wings, with an average of about 16 feathers per wing.
A goose has left and right wings, with an average of about 20 feathers each.
Above the competition level (a), there are about 3-4 ducks and 5-6 geese on the left and right wings.
Standard level (b), left and right wings, about 4 ducks and 4 geese.
Standard level (C), left and right wings, about 4 ducks and 4 geese.
A badminton needs 16 feathers arranged at the same angle to form a good fly ball, and the appearance of the feathers is white and smooth, which can be called super badminton.
Classification of badminton ball heads
According to the materials used, there are three common types: hard plastic, foamed plastic and cork. The first two kinds are mainly used for low-grade leisure badminton with low cost and poor performance. Middle and high-grade badminton all adopt natural cork ball heads, which can be roughly divided into three categories: integral cork ball heads, composite cork ball heads and recycled cork ball heads. At present, there are two kinds of ball heads: one is all-cork ball head, and the low-quality cork material is easy to crack, and the other is Taiwan Province fiberboard head cork composite material (artificial material), which has good strength.
Structure of the ball head of desktop fiberboard;
The upper layer of the ball head is about 13MM of chemical fiber material, and the lower layer is cork. There are three kinds of soft books in the lower level:
1, small particle broken cork with hardness below Shore 60 (patented by Taiwan Province Zhonghua Cork Factory);
2. Large-particle broken cork with shore hardness above 60 (patented by Shanghai Dongli Ball Head Factory);
3. 13MM monolithic cork (patented by Shanghai Chongming Island Cork Factory) has a Shore hardness of over 60.
Judging from the use of the above three kinds of ball heads, the beating resistance is far better than all cork, because one of the most important reasons is that the ball head plane of cork will crack, while the ball head of surface fiberboard will not crack basically. The latter two kinds of ball heads have a good sense of beat, and the sound is clearer, and they are not constrained by the beat. It is generally believed that the ball head of small particles of broken cork must not be as good as the latter two.
There is a kind of composite cork-badminton with composite cork, which improves the durability by more than 30%.
Badminton production cycle and hitting resistance requirements;
Generally speaking, the growth cycle of a goose from hatching to slaughter is 120 days, and the colloid layer and sponge inside the goose hair stalk are basically mature, which will be beneficial to the anti-strike ability of badminton. With the continuous progress of science and global warming, the growth cycle of a goose is only about 90 days, which is definitely a little worse than that of 120 days. The main reason is that the colloid layer and sponge are not mature enough. Science and technology is feed improvement, and the average climate temperature rises by 2-3 degrees.
How to make badminton more resistant to playing?
Prepare a bowl of boiled water, and immerse the hair of badminton in the water for 2-3 minutes. Be careful not to let water penetrate into the ball head part. If the water temperature is too low, change it to boiling water in time.
After soaking, take out the ball, dry it in the shade and use it. The treated feather has better toughness. As long as it is not directly hit on the ball hair, the ball's beating resistance will be improved a lot. It is important to note that if it is not used within 5-6 days after treatment, it should be treated again. In addition, if you buy a duck feather ball, its structure and strength are far less than goose feathers, and the treatment effect will be bad.
The reason is:
1, duck feathers contain more oil than goose feathers;
2. The sponge of duck feather rarely absorbs water vapor, so the effect is not obvious.
Badminton court standard
Badminton court is a rectangular court with a length of 13.40m, a width of 6. 10m for doubles and 5. 18m for singles. The line width of each line on the court is 4cm, measured from the outer edge of the line. It is best to draw the boundary of the court with white, yellow or other easily recognizable colors.
According to the regulations of international competitions, the minimum height of the whole stadium is 9 meters. There must be no beams or other obstacles within this height, and there must be no obstacles within 2 meters around the stadium. There must be a distance of at least 2 meters between any two parallel courses. The walls around the stadium should be dark and there should be no wind.
Badminton net standard
The badminton net is 6 6. 10/0m long and 76cm wide. It is made of high-quality dark natural or man-made fibers. Mesh size is between15-20mm. The upper edge of the net should be sewn with a 75-wide double-layer white cloth (folded in half), and a thin steel rope or nylon rope should be passed through the interlayer and firmly hung between the two net posts. The standard net should be brown or grass green. Net post height1.55m. Whether it is singles or doubles, the two net posts should stand at the midpoint of the sideline of the doubles field. In the official competition, the upper edge of the middle part of the net must be 1.524 meters above the ground, and the height of both ends of the net must be 1.55 meters. The two ends of the net must be tightly tied to the net post, and there can be no gap in the middle.