CN109999438A

CN109999438A - A kind of inflatable hollow sphere of noise reduction

Info

Publication number: CN109999438A
Application number: CN201910329636.3A
Authority: CN
Inventors: 米建军
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2019-07-12

Abstract

The present invention relates to sports apparatus fields, specifically a kind of inflatable hollow sphere of noise reduction, the purpose of the invention is to provide a kind of inflatable hollow spheres of noise reduction, including hollow sphere and aeration aperture, noise reduction layer is equipped in sphere inner wall, noise reduction layer is having recess towards the surface of sphere inner wall, noise reduction layer is fixed in a manner of being contacted with sphere inner wall by multiple uniform parts, while not to sphere elasticity effect, increase the noise reduction area of noise reduction layer, recessed cavity can obstruct the propagation of noise, recess is also provided in the face of noise reduction layer towards the centre of sphere, further increase the area of noise reduction layer, kick is additionally provided in outer surface of spheroid.

Description

A kind of inflatable hollow sphere of noise reduction

Technical field

The present invention relates to sports apparatus field, specifically a kind of inflatable hollow sphere of noise reduction.

Background technique

Ball game occupies significant proportion, such as basketball, vollyball, football etc., because of various ball fortune in sports It moves interesting and takes exercises very much, be constantly subjected to liking for people all over the world, this kind of inflatable hollow sphere is because of hollow the inside The light weight full of air has elasticity well, but in these ball use processes, ball and ground or human body etc. are hit It hits, generation noise, noise includes ball and the extraneous noise for hitting generation, and ball inside is because of the air that the confined space of sphere generates Compression and sympathetic response noise, influence people and use and watch.

Summary of the invention

The purpose of the invention is to provide a kind of inflatable hollow sphere of noise reduction, including hollow sphere and aeration aperture, Sphere inner wall is equipped with noise reduction layer, and noise reduction layer has recess, referred to as inner wall depression, noise reduction layer and sphere on the surface towards sphere inner wall Inner wall is fixed in such a way that multiple uniform parts contact, and the noise reduction layer of this shape can make the major part of noise reduction layer leave sphere Inner wall, sphere can generate vibration deformation in use, if noise reduction layer fits together with sphere inner wall completely, due to drop Layer sheet of making an uproar can absorb the energy of sphere vibration deformation, the elasticity of sphere is made to die down as flexible structure, influence using needing both Do not influence elasticity and can noise reduction, therefore design noise reduction layer and largely leave sphere inner wall, and at the same time forming multiple recess skies Chamber increases the noise reduction absorption area of noise reduction layer while not to sphere elasticity effect, and recessed cavity can obstruct noise It propagates, and diffusing reflection can be formed, be also provided with recess in the face of noise reduction layer towards the centre of sphere, referred to as centripetal recess, these centripetal recess It is arranged in a staggered manner mutually with the inner wall depression towards sphere inner wall, further increases the area of noise reduction layer, because many such interior Wall recess and centripetal recess can disperse insulating noise in the multiple reflections sympathetic response of ball interior, and noise reduction layer and sphere inner wall can It is fixed by by way of point or line contact, preferred noise reduction layer and sphere inner wall are fixed with equally distributed multiple point contacts, It can be fixed by the way of bonding, noise reduction layer is porous structure, and noise can be absorbed in porous structure, and porous structure can use Through-hole or hole-closing structure, or use partial through holes structure and part hole-closing structure simultaneously, using through-hole structure, through-hole structure can be with The process for propagating noise inside through-hole lengthens and weakens, and hole-closing structure can obstruct the propagation of noise, and noise reduction layer is porous Sponge, the noise that these structures can mainly reduce ball interior compressed air noise and sympathetic response generates.

All kinds of ball interior space sizes can generate the noise of different frequency, and for a specific sphere, noise reduction layer is more Pore structure, the size in hole determine according to ball interior space size, the size of adjustment hole to the most suitable size of noise reduction, noise reduction layer Recess also adjusts the most suitable size of noise reduction according to ball interior space size.

A kind of inflatable hollow sphere of noise reduction is also uniformly covered with kick in outer surface of spheroid, and kick can increase and make The frictional force of user, has an effect and the frictional force of sphere and ground convenient for user, simultaneously because the presence of kick, sphere Also has the function of noise reduction when making impact with the ground, this structure mainly reduces the noise of sphere external impact generation.

The recess of noise reduction layer can be the shapes such as arc or rectangle.

The partial density that noise reduction layer and sphere inner wall are connected and fixed is greater than noise reduction layer other parts, this part, which needs to have, to be connected Fixed function is connect, the material identical or different with noise reduction layer other parts can be used, there is certain elasticity.

The hollow sphere of the above structure can be used for basketball, and vollyball and football etc. are a variety of hollow ball.

The manufacture craft of the above-mentioned inflatable hollow sphere of noise reduction, hollow sphere set noise reduction layer, liner and crust, and noise reduction layer is averagely cut Cut two halves, liner is also average two halves, two halves noise reduction layer is first bonded and fixed at two halves inner side of liner respectively, after two halves are dropped again The position coating adhesive that layer of making an uproar contacts with each other presses liner afterwards, while its internal two halves noise reduction layer is bonded together, and rear installing is outer Skin.

The manufacture craft of the above-mentioned inflatable hollow sphere of noise reduction, can also with noise reduction layer be an entirety, noise reduction layer need with Sphere liner inner wall bonded part coating adhesive, liner be averaged two halves close to noise reduction lamination be combined, install crust afterwards.

The beneficial effects of the present invention are: a kind of inflatable hollow sphere of noise reduction of the present invention is used, by making noise reduction Layer largely leaves sphere, do not influence ball it is original using elastic property in the case where, noise reduction layer two sides recessed cavity is set, is subtracted Few interior noise is spread from impact site to ball interior, absorbs noise using mandruka noise reduction layer, is reduced ball interior and is made an uproar The sympathetic response of sound sets kick in outer surface of spheroid, reduces sphere and extraneous impact area, external impact noise is reduced, by interior The collocation of external structure reduces the noise that ball generates in use, promotes the development of ball game.

Detailed description of the invention

Fig. 1 is a kind of basketball cross-sectional view of the invention.

Fig. 2 is that a kind of basketball of the invention uses cross-sectional view.

1 is sphere in figure, and 2 be noise reduction layer, and 3 be noise reduction layer fixed point, and 4 be inner wall depression, and 5 be centripetal recess, and 6 be inflation Hole, 7 be striking face.

Specific embodiment

Present invention will be further explained below with reference to specific examples, and Fig. 1 is that a kind of basketball cross section of the invention is illustrated Figure, sphere 1, sphere 1 are made of liner and crust, and it is the inflatable and deflatable use of sphere that sphere 1, which is equipped with aeration aperture 6, and aeration aperture 6 is worn Crust and liner are crossed, sphere 1 is made using conventional material, such as rubber and leather, and liner is fitted in crust inner surface, inside The inner surface of gallbladder is additionally provided with noise reduction layer 2, and noise reduction layer 2 makes of sponge, and noise reduction layer 2 has inner wall depression 4, inner wall towards liner side Recess 4 between point be adhesively fixed with liner, noise reduction layer 2 towards the side of the basketball centre of sphere be equipped with it is centripetal recess 5, and with direction in The inner wall depression 4 of gallbladder side is staggeredly arranged mutually, and noise reduction layer 2 makes of mandruka, and porous is through-hole, this porous structure There is preferable noise reduction effect for medium-high frequency sound, be also uniformly covered with kick 8 in basketball crust surface, kick 8 has bullet Property；Fig. 2 is that a kind of basketball of the invention uses cross-sectional view, and when basketball is hit with striking face 7, generation is made an uproar Sound, arrow display portion noise transmission situation in figure, the kick 8 on 1 surface of sphere can reduce making an uproar for 1 surface external of sphere Sound, sphere 1 generate inside noise also as hitting, and noise passes through sphere 1, reach the inner wall depression 4 and sphere of noise reduction layer 2 Inner wall is formed by cavity, and multiple diffusing reflection occurs for noise, and partial noise passes through the mandruka structure of noise reduction layer 2, porous Inside configuration vibration is converted into heat, remainder noise passes through noise reduction layer 2 and enters ball centre position, noise reduction layer 2 to Multiple diffusing reflection occurs in heart recess 5, the noise that diffusing reflection is returned can be continued to absorb, pass through by the porous structure of noise reduction layer 2 These a series of methods and structure are reduced noise.

Claims

1. a kind of inflatable hollow sphere of noise reduction, including hollow sphere and aeration aperture, it is characterised in that: be equipped with drop in sphere inner wall It makes an uproar layer, noise reduction layer is consolidated in such a way that the surface towards sphere inner wall has recess, noise reduction layer to contact with sphere inner wall by multiple portions It is fixed.

2. noise reduction layer according to claim 1, it is characterised in that: noise reduction layer and sphere inner wall are with equally distributed multiple points Contact is fixed.

3. noise reduction layer according to claim 1, it is characterised in that: the face of noise reduction layer towards the centre of sphere also is provided with being recessed.

4. noise reduction layer according to claim 1, it is characterised in that: noise reduction layer is porous through-hole structure.

5. noise reduction layer according to claim 1, it is characterised in that: noise reduction layer is mandruka.

6. the inflatable hollow sphere of a kind of noise reduction according to claim 1, it is characterised in that: in the also uniform cloth of outer surface of spheroid Full kick.

7. a kind of basketball, including liner and crust, liner are fitted in crust inner surface, it is equipped with aeration aperture and passes through crust and liner, It is additionally provided with noise reduction layer in the inner surface of liner, noise reduction layer has recess towards liner side, and the point between recess and liner bonding are solid Fixed, the side of noise reduction layer towards the basketball centre of sphere also is provided with being recessed, and is staggeredly arranged mutually with the recess towards liner side, noise reduction Layer makes of mandruka, and porous is through-hole, is also uniformly covered with kick in basketball crust surface, kick has elasticity.