ELASTIC BODY AND BAT

To provide an elastic body capable of reducing energy loss in the elastic body and improving repulsive force.SOLUTION: An elastic body for attachment to a ball hitting part 13 of a bat 1 for a ball game, includes: an outer annular part 23 arranged on a radially outer side; an inner annular part 21 arranged on a radially inner side; a spring part 19 which supports the outer annular part 23 relative to the inner annular part 21 in a radial direction, and is deflectable in a circumferential direction and the radial direction; and a space part 25 which is defined between the outer annular part 23 and the inner annular part 21, and enables deformation of the outer annular part 23 to the radially inner side while allowing deflection of the spring part 19.SELECTED DRAWING: Figure 4 【課題】弾性体でのエネルギー損失を低減し、反発力を向上することが可能な弾性体を提供する。【解決手段】球技用のバット１の打球部１３に取り付けられる弾性体であって、径方向の外側に配置された外環状部２３と、径方向の内側に配置された内環状部２１と、外環状部２３を内環状部２１に対し径方向で支持すると共に周方向及び径方向へ撓みが可能なばね部１９と、外環状部２３と内環状部２１との間に区画され、ばね部１９の撓みを許容しながら外環状部２３の径方向内側への変形を可能にする空間部２５とを備える。【選択図】 図４