CN201719763U

CN201719763U - Pingpong ball with convex rib net on inner wall of ball body

Info

Publication number: CN201719763U
Application number: CN2010201564085U
Authority: CN
Inventors: 陆臻
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-04-12
Filing date: 2010-04-12
Publication date: 2011-01-26
Anticipated expiration: 2020-04-12

Abstract

The utility model relates to a pingpong ball with a convex rib net on the inner wall of the ball body. After the openings of two semispherical shells with convex rib nets on the inner walls are stuck together, the two semispherical shells are heated and expanded to form the round pingpong ball in a mould. While the weight of the ball body is controlled within a standard range, the thickness of the wall of the ball is relatively uniform, the overall rigidity of the ball is high, the hardness of the top and the corner is relatively uniform, and the elasticity is relatively consistent.

Description

The protruding table tennis that the muscle net is arranged of a kind of sphere inner wall

Technical field

The utility model relates to a kind of table tennis, especially the protruding table tennis that the muscle net is arranged of sphere inner wall.

Background technology

Table tennis is a kind of athletic sports appliance that includes in the programme of the Olympic Games.At present commercially available table tennis have soft ball and hard ball point, official ball adopts hard ball usually.Its production technology is that the celluloid wafer presser that two Zhang Pings put in order is made two hemisphere housings, heating in two bonding mouth to mouth rearmounted moulds of hemisphere housing is expand into the spheroid of rounding again.Two hemisphere housings are called waist in bonding position mutually; The position, the center of circle of hemisphere housing is called the top; Position between waist and top is called the bight.Because the extension of celluloid disk in being pressed into hemisphere housing process be uneven, cause the thickness in top and bight different, caused the top of table tennis and bight soft or hard inequality, elasticity irregular.The specification requirement of table tennis is that ball matter is hard, good springiness, and weight must be controlled between the 2.67-2.77 gram.Because be subjected to the restriction of weight, existing ball making process can not be with the whole ball wall thickening of ball, ball matter is done firmly, so commercially available hard table tennis all exists the deficiency that the top is hard, the bight is soft.

Summary of the invention

For the top that overcomes commercially available table tennis and bight soft or hard inequality, the irregular deficiency of elasticity, the utility model provides a kind of sphere inner wall the protruding table tennis that the muscle net is arranged, this table tennis not only ball wall thickness is even relatively, the soft or hard in top and bight is also relative even, elasticity is consistent relatively, and the weight of ball also is controlled in the critical field.

The technical scheme that its technical problem that solves the utility model adopts is: earlier two celluloid wafer pressers are made two protruding hemisphere housings that the muscle net is arranged of inwall, the muscle net of protrusion does not have fixedly style, does not have uniqueness.Then that two hemisphere housings are bonding mouth to mouth, put and heat the table tennis that expand into rounding in the mould.The muscle net that the spherical shell inwall protrudes has strengthened the hardness of ball, and the recessed order of the corresponding formation of muscle net of protrusion has alleviated the weight of ball, and the weight of controlling ball effectively is in critical field, and weight meets standard.

The beneficial effects of the utility model are: the whole ball matter hardness of table tennis is good, and the soft or hard in spheroid top and bight is also relative even, and elasticity is consistent relatively, makes the bounce amount of table tennis in motion process more consistent, and drop point is more accurate.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

1. muscle nets among the figure, 2. muscle net, 3. hemisphere housing, 4. hemisphere housing.

The specific embodiment

Earlier two celluloid wafer pressers are made two protruding hemisphere housing (3) and (4) that muscle net (1) and (2) are arranged of inwall, then that two hemisphere housings (3) and (4) are bonding mouth to mouth, put and heat the table tennis that expand into rounding in the mould.

Claims

1. the protruding table tennis that the muscle net is arranged of sphere inner wall forms by adding thermal expansion in two bonding mouth to mouth rearmounted moulds of hemisphere housing, it is characterized in that: sphere inner wall is protruding the muscle net.