PROBLEM TO BE SOLVED: To provide an ejaculation promotion device capable of enhancing ejaculation efficiency.SOLUTION: The ejaculation promotion device includes a massage part 42 expandable/contractable due to resin, formed cylindrically with a rear side closed and having an insertion opening 423b of a penis provided at the front of a front part, a container 21 formed in a hollow manner with the front face opened for containing the massage part 42 inside from the front, fixing means 5 for fixing a front part side of the massage part 42 to the container 21, and driving means for expanding and contracting the massage part 42 whose front part side is fixed to the container 21 by the fixing means 5 in forward and backward directions A. A massage part body 421 is formed closer to a rear side of the massage part 42 than to the front part side through an expansion/contraction part 422. The driving means includes a cylindrical body 241 for containing the massage part body 421 in an inside 241a to fix the massage part body, and a driving means body for expanding/contracting the expansion/contraction part 422 in the forward and backward directions A by electrically reciprocating the cylindrical body 241 in the forward and backward directions A to reciprocate the massage part body 421 in the in forward and backward directions A.COPYRIGHT: (C)2015,JPO&INPIT【課題】射精効率を上げることができる射精促進装置を提供する。【解決手段】射精促進装置は、樹脂により伸縮可能で後側が閉塞された筒状に形成されて前部の前面にペニスの挿入口423bが設けられたマッサージ部42と、前面が開口した中空状に形成されて当該前面から内部にマッサージ部42を収容する収容体21と、マッサージ部42の前部側を収容体21に固定する固定手段5と、固定手段5により前部側が収容体21に固定されたマッサージ部42を前後方向Aに伸縮させる駆動手段とを備える。マッサージ部42の前部側よりも後側には伸縮部422を介してマッサージ部本体421が形成されている。駆動手段は、マッサージ部本体421を内部241aに収容して固定する筒体241と、筒体241を電動で前後方向Aに往復移動させてマッサージ部本体421を前後方向Aに往復移動させることにより伸縮部422を前後方向Aに伸縮させる駆動手段本体とを備える。【選択図】図6
