CN111111122B - Table tennis bat capable of changing hitting friction force by using air pressure - Google Patents

Table tennis bat capable of changing hitting friction force by using air pressure Download PDF

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Publication number
CN111111122B
CN111111122B CN202010107807.0A CN202010107807A CN111111122B CN 111111122 B CN111111122 B CN 111111122B CN 202010107807 A CN202010107807 A CN 202010107807A CN 111111122 B CN111111122 B CN 111111122B
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CN
China
Prior art keywords
rubber
air
cavity
air pressure
valve
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Expired - Fee Related
Application number
CN202010107807.0A
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Chinese (zh)
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CN111111122A (en
Inventor
尹忠根
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Chongqing University of Education
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Chongqing University of Education
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Priority to CN202010107807.0A priority Critical patent/CN111111122B/en
Publication of CN111111122A publication Critical patent/CN111111122A/en
Application granted granted Critical
Publication of CN111111122B publication Critical patent/CN111111122B/en
Expired - Fee Related legal-status Critical Current
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    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B59/00—Bats, rackets, or the like, not covered by groups A63B49/00 - A63B57/00
    • A63B59/40—Rackets or the like with flat striking surfaces for hitting a ball in the air, e.g. for table tennis
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/06—Handles
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B60/00—Details or accessories of golf clubs, bats, rackets or the like
    • A63B60/50—Details or accessories of golf clubs, bats, rackets or the like with through-holes
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2102/00—Application of clubs, bats, rackets or the like to the sporting activity ; particular sports involving the use of balls and clubs, bats, rackets, or the like
    • A63B2102/16—Table tennis

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

A table tennis bat capable of changing hitting friction force by using air pressure comprises a bottom plate, an air valve, sponge rubber, a rubber sole and a cavity; the method is characterized in that: the upper end of the bottom plate is provided with a racket handle; the middle of the top of the racket handle is provided with an air valve; the bottom of the air valve is connected with the upper end of the air pipe; the air pipe penetrates through the middle part of the bottom plate from the racket handle, the bottom end of the air pipe is bent towards the direction of sticking the sponge rubber and penetrates through the sponge rubber and the rubber bottom, and the bottom end opening of the air pipe is flush with the outward surface of the rubber bottom; the edge of the outward surface of the rubber sole is provided with a sealing ring, the outward surface of the rubber sole is provided with granular glue, the soft rubber covers the rubber sole, the edge of the soft rubber is sealed and fixed with the sealing ring, and the granular glue penetrates through the soft rubber to protrude outside. The invention adopts the air pressure adjustment mode to adjust the friction force of the table tennis bat in a stepless way, can help a user to quickly understand the influence of the friction force of the table tennis bat on the batting, and is particularly suitable for beginners to use.

Description

Table tennis bat capable of changing hitting friction force by using air pressure
Technical Field
The invention relates to the field of sports and competition tools, in particular to a table tennis bat capable of changing hitting friction by using air pressure.
Background
The table tennis sport is a mass sports in China. In order to improve the table tennis sport level in China, the training of beginners is very important. The rubber sheet is divided into positive rubber, reverse rubber and long rubber, and the selection and the beating method are inseparable. The positive particle glue faces outwards, the particle height-to-diameter ratio is not more than 1 to 1, the ball hitting is stable and fast, certain rotation can be caused, the ball is not easy to eat and rotate, and the method is suitable for a close-table quick attack type hitting method. The anti-particle glue faces inwards, the smooth surface faces outwards, the viscosity is high, the friction is high, strong rotation is easy to cause, and the rubber is suitable for players playing arc rings and cutting balls and is also the most commonly used rubber at present. The long glue is also outward in grain, but the grain is longer and soft, the rotation change is strange, the rotation strength of the returning ball is generally determined by the returning ball, the opposite rotation is generated, the opponent is difficult to adapt, and the user needs to have comprehensive technology and make various exercises.
The selection of table tennis bat is important in training beginners. The beginner should select a conventional rubber such as a reverse rubber or a forward rubber. The professional trainer of the table tennis thinks that: for training of beginners, a table tennis bat with certain aggressivity and certain rotatability is better. That is to say the performance of racket can be between the two best, if the granule length of racket can be adjusted, beginner's demand will can be satisfied, also can obtain better training.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a table tennis bat capable of changing the hitting friction force by using air pressure.
The technical scheme adopted by the invention is as follows: a table tennis bat capable of changing hitting friction force by using air pressure comprises a bottom plate, an air valve, sponge rubber, a rubber sole and a cavity; the method is characterized in that: the upper end of the bottom plate is provided with a racket handle; the middle of the top of the racket handle is provided with an air valve; the bottom of the air valve is connected with the upper end of the air pipe; the air pipe penetrates through the middle part of the bottom plate from the racket handle, the bottom end of the air pipe is bent towards the direction of sticking the sponge rubber and penetrates through the sponge rubber and the rubber bottom, and the bottom end opening of the air pipe is flush with the outward surface of the rubber bottom; the edge of the outward surface of the rubber sole is provided with a sealing ring, the outward surface of the rubber sole is provided with granular glue, the soft rubber covers the outside of the rubber sole, the edge of the soft rubber is sealed and fixed with the sealing ring, and the granular glue penetrates through the soft rubber and protrudes out of the soft rubber; the soft rubber is fixed in the middle of the granular rubber; the rubber bottom is fixed on the sponge rubber, and the sponge rubber is fixed on the bottom plate; the rubber sole, the sealing ring, the granular rubber and the soft rubber form a whole, and a cavity is formed inside the whole; the air in the cavity can only flow into the valve through the air holes in the air pipe, the valve core is arranged in the valve, and the valve core can prevent the air in the cavity and the air pipe from flowing through the valve when no external force influences.
The air is inflated into the trachea through the air valve, and the air flow enters the cavity through the air hole.
When the air pressure in the cavity is larger than the air pressure in the external space, the air in the cavity can jack and protrude the soft rubber skin arranged between the granular glue outwards; when the air pressure in the cavity is smaller than the air pressure in the external space, the soft rubber skin arranged between the granular glue is extruded inwards to be concave by the pressure of the external air.
When the soft rubber is extruded and deformed outwards by air, the soft rubber can be protruded outwards to be flush with the outer end of the granular rubber at most; when the soft rubber is extruded and deformed inwards by external air, the inner surface of the soft rubber is contacted with the rubber bottom together.
When the soft rubber is extruded and deformed inwards or outwards by air, the length of the granular rubber cannot be changed.
By adopting the technical scheme of the invention, the invention has the following beneficial effects:
1) the invention adopts the air pressure adjustment mode to adjust the friction force of the table tennis bat in a stepless way, can help a user to quickly understand the influence of the friction force of the table tennis bat on the batting, and is particularly suitable for beginners to use;
2) when the pressure in the cavity is different from the external air pressure, a user can press the valve inside of the valve at the top of the racket handle, the air pressure in the cavity can be quickly balanced with the external air pressure, the friction force of the table tennis racket can be changed immediately, and the special winning effect can be achieved at the key moment of a game.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic view of the structure of the present invention in which an air tube is provided between the rubber sole and the soft rubber (when the air pressure in the cavity between the rubber sole and the soft rubber is equal to the external air pressure, the state of the soft rubber is maintained);
FIG. 3 is a schematic view of the structure between the gelatin sole and the soft gelatin skin;
FIG. 4 shows the concave state of the soft rubber skin when the air pressure in the cavity between the rubber skin bottom and the soft rubber skin at the cutting part A of the invention is lower than the external air pressure;
FIG. 5 shows the state that the soft rubber skin protrudes to be flush with the granulated rubber when the air pressure in the cavity between the rubber skin bottom A and the soft rubber skin at the cutting part of the invention is higher than the external air pressure;
in the figure: the racket comprises a bottom plate 10, a racket handle 11, a valve 20, an air pipe 21, an air hole 22, a valve core 23, sponge rubber 30, a rubber sole 40, a sealing ring 41, granular rubber 42, soft rubber 43, a cavity 50 and a cutting part A.
Detailed Description
The invention is further illustrated by the following figures and examples: as shown in fig. 1 to 5, a table tennis bat capable of changing a hitting friction force by using air pressure includes a base plate 10, an air valve 20, a sponge rubber 30, a rubber sole 40, and a cavity 50; the method is characterized in that: the upper end of the bottom plate 10 is provided with a racket handle 11; the middle of the top of the racket handle 11 is provided with an air valve 20; the bottom of the air valve 20 is connected with the upper end of an air pipe 21; the air pipe 21 penetrates through the middle part of the bottom plate 10 from the racket handle 11, the bottom end of the air pipe 21 bends towards the direction of sticking the sponge rubber 30 and penetrates through the sponge rubber 30 and the rubber bottom 40, and the bottom end opening of the air pipe 21 is flush with the outward surface of the rubber bottom 40; the edge of the outward surface of the rubber sole 40 is provided with a sealing ring 41, the outward surface of the rubber sole 40 is provided with granular glue 42, a soft rubber 43 covers the rubber sole 40, the edge of the soft rubber 43 is sealed and fixed with the sealing ring 41, and the granular glue 42 penetrates through the soft rubber 43 and protrudes out; the soft rubber sheet 43 is fixed in the middle of the granular rubber 42; the rubber sole 40 is fixed on the sponge rubber 30, and the sponge rubber 30 is fixed on the bottom plate 10; the rubber sole 40, the closing ring 41, the granular rubber 42 and the soft rubber 43 form a whole, and a cavity 50 is formed inside; the air in the cavity 50 can only flow into the valve 20 through the air holes 22 in the air pipe 21, the valve core 23 is arranged in the valve 20, and the valve core 23 can prevent the air in the cavity 50 and the air pipe 21 from flowing through the valve 20 when no external force is applied.
By inflating the valve 20 into the air tube 21, an air flow will enter the cavity 50 through the air hole 22.
When the air pressure in the cavity 50 is greater than the air pressure in the external space, the air in the cavity 50 can jack and protrude the soft rubber skin 43 arranged between the granular glue 42 outwards; when the air pressure in the cavity 50 is less than the air pressure in the external space, the soft rubber skin 43 disposed between the granular glue 42 is pressed inward by the external air pressure to be recessed.
When the soft rubber sheet 43 is extruded and deformed outwards by air, the soft rubber sheet 43 can protrude outwards to be flush with the outer end of the granular glue 42 at most; when the soft rubber sheet 43 is pressed inward by the outside air, the inner surface of the soft rubber sheet 43 contacts with the rubber sole 40.
When the soft rubber sheet 43 is pressed and deformed inward or outward by air, the length of the granular rubber 42 is not changed.
In this embodiment, when the pressure in the cavity is different from the external air pressure, the air pressure in the cavity can be balanced with the air at the external atmospheric pressure by pressing the valve inside inward, and a special inflator is required to inflate or evacuate the air to make the air pressure in the cavity greater than or less than the external atmospheric pressure.
In the embodiment, when the cavity is inflated until the soft rubber skin is jacked outwards and protrudes to be flush with the outer end of the granular rubber, the friction force is maximized when the ball is hit.
The invention adopts the air pressure adjustment mode to adjust the friction force of the table tennis bat in a stepless way, can help a user to quickly understand the influence of the friction force of the table tennis bat on the batting, and is particularly suitable for beginners to use; when the pressure in the cavity is different from the external air pressure, a user can press the valve inside of the valve at the top of the racket handle, the air pressure in the cavity can be quickly balanced with the external air pressure, the friction force of the table tennis racket can be changed immediately, and the special winning effect can be achieved at the key moment of a game.
The above examples of the present invention are illustrative of typical embodiments of the present invention and are not intended to limit the embodiments of the present invention. Obvious variations from the embodiments of the present invention are still within the scope of the claims of the present invention.

Claims (3)

1. A table tennis bat capable of changing hitting friction force by using air pressure comprises a bottom plate (10), an air valve (20), sponge rubber (30), a rubber sole (40) and a cavity (50); the method is characterized in that: the upper end of the bottom plate (10) is provided with a racket handle (11); the middle of the top of the racket handle (11) is provided with an air valve (20); the bottom of the air valve (20) is connected with the upper end of the air pipe (21); the air pipe (21) penetrates through the middle part of the bottom plate (10) from the racket handle (11), the bottom end of the air pipe (21) is bent towards the direction of sticking the sponge rubber (30) and penetrates through the sponge rubber (30) and the rubber bottom (40), and the bottom end opening of the air pipe (21) is flush with the outward surface of the rubber bottom (40); a sealing ring (41) is arranged on the edge of the outward surface of the rubber sole (40), granular glue (42) is arranged on the outward surface of the rubber sole (40), the soft rubber (43) covers the rubber sole (40), the edge of the soft rubber (43) is sealed and fixed with the sealing ring (41), and the granular glue (42) penetrates through the soft rubber (43) and protrudes out; the soft rubber sheet (43) is fixed in the middle of the granular rubber (42); the rubber sole (40) is fixed on the sponge rubber (30), and the sponge rubber (30) is fixed on the bottom plate (10); the rubber sole (40), the sealing ring (41), the granular rubber (42) and the soft rubber (43) form a whole, and a cavity (50) is formed inside the whole; the air in the cavity (50) can only flow into the air valve (20) through the air hole (22) in the air pipe (21), the air pressure in the cavity (50) can be changed through the air valve (20), a valve core (23) is arranged in the air valve (20), and the valve core (23) can prevent the air in the cavity (50) and the air pipe (21) from flowing through the air valve (20) when no external force is applied; when the air pressure in the cavity (50) is larger than the air pressure in the external space, the air in the cavity (50) can jack and protrude the soft rubber sheet (43) arranged between the granular rubber (42) outwards; when the air pressure in the cavity (50) is smaller than the air pressure in the external space, the pressure of the external air can press the soft rubber sheet (43) placed between the granular rubber (42) inwards to be concave; when the pressure in the cavity (50) is different from the external air pressure, a user can press the valve core (23) in the valve (20) at the top of the racket handle (11), and the air pressure in the cavity (50) can be rapidly balanced with the external air pressure.
2. The table tennis bat for changing a hitting friction force using air pressure according to claim 1, wherein when the soft rubber (43) is deformed by being pressed inward by outside air, the inner surface of the soft rubber (43) comes into contact with the rubber sole (40).
3. A table tennis bat capable of changing a hitting friction force using air pressure according to claim 1, wherein the rubber (43) is deformed by being pressed inward or outward by air, and the length of the granular rubber (42) is not changed.
CN202010107807.0A 2020-02-21 2020-02-21 Table tennis bat capable of changing hitting friction force by using air pressure Expired - Fee Related CN111111122B (en)

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CN202010107807.0A CN111111122B (en) 2020-02-21 2020-02-21 Table tennis bat capable of changing hitting friction force by using air pressure

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Application Number Priority Date Filing Date Title
CN202010107807.0A CN111111122B (en) 2020-02-21 2020-02-21 Table tennis bat capable of changing hitting friction force by using air pressure

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CN111111122B true CN111111122B (en) 2021-01-05

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114272579A (en) * 2022-01-16 2022-04-05 重庆公共运输职业学院 Using method of table tennis bat capable of changing friction coefficient of hitting rubber surface
CN114272578A (en) * 2022-01-16 2022-04-05 重庆公共运输职业学院 Table tennis bat capable of changing friction coefficient of striking surface

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101244329A (en) * 2008-03-17 2008-08-20 李岩 Inflatable rubber-prevention rubber oxidized table tennis bat sleeve
CN203989751U (en) * 2014-04-28 2014-12-10 深圳市福田区青少年科技教育协会 Capable of replacing table tennis bat
CN107213607A (en) * 2017-07-19 2017-09-29 成都尚智恒达科技有限公司 It is a kind of to cultivate the table tennis bat of physical education for children hobby

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Effective date of registration: 20201221

Address after: 400065 No.9 Xuefu Avenue, 4km, Nan'an District, Chongqing (Chongqing Children's physical fitness development research center)

Applicant after: CHONGQING University OF EDUCATION

Address before: 142-20 Jiefang Road, Yuzhong District, Chongqing

Applicant before: CHONGQING ZHIRE TECHNOLOGY DEVELOPMENT Co.

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Granted publication date: 20210105

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