A power-driven neck clamping mechanism for physical traction therapy includes a rail platform disposed on a base and a head rest member disposed on the rail platform. A clamping mechanism for retaining a users neck includes a power-driven drive device, a transmission member, and two displacement members. The power-driven drive device is connected with the transmission member. The displacement members are movably disposed on the transmission member. The displacement members are disposed at two sides of the neck rest portion. The power-driven drive device drives the transmission member to actuate. The displacement members are controlled by the transmission member to displace. The displacement members can be moved to approach the users neck to clamp and retain the neck, or the displacement members can be moved away from the users neck to release the neck. The user can control the force to clamp the neck conveniently and finely.一種物理牽引治療之電動頸部夾掣機構,其包括有一軌道台設於一基座上,而一頭置件設於軌道台上,且頭置件設有一頸置部。一用以固定使用者頸部之夾掣機構包括有一電動驅動器、一傳動件及兩個位移件,其中電動驅動器連接傳動件,而兩位移件可移動地設於傳動件上,且兩位移件分別位於頸置部之兩側。電動驅動器可驅動傳動件作動,並透過傳動件控制兩位移件產生位移;令兩位移件作相向方向移動,以達到夾掣使用者的頸部以固定之,或令位移件作相反方向移動,以達到鬆開使用者的頸部效果而藉以實施物理治療。如此一來,其能便利使用者進行適當夾摯力之操作及微調性,具有極佳之控制性、舒適性及安全性。10‧‧‧基座11‧‧‧軌道台12‧‧‧肩置部13‧‧‧容室20‧‧‧頭置件21‧‧‧頸置部22‧‧‧長滑槽30‧‧‧電動驅動器301‧‧‧第一齒輪31‧‧‧傳動件311‧‧‧桿體311A‧‧‧螺紋段311B‧‧‧螺紋段312‧‧‧第二齒輪32‧‧‧位移件321‧‧‧底座322‧‧‧夾頸塊D1‧‧‧縱向D2‧‧‧橫向323‧‧‧螺孔
