A spacing adjustment device (130) used for adjusting the spacing between a first connection portion (110) and a second connection portion (120) of a head massager comprises a surface cover assembly (140) arranged at the joint of the first connection portion (110) and the second connection portion (120) and a drive mechanism mounted on the surface cover assembly (140). The drive mechanism comprises a roller lock member (150) rotatably arranged on the surface cover assembly (140) and a first roller groove portion (160) arranged on the first connection portion (110). The roller lock member (150) is provided with a first roller column (151). The axis of the first roller column (151) is arranged in parallel with the axis of rotation of the roller lock member (150). The first roller groove portion (160) is provided with multiple first roller grooves (161) fitting the first roller column (151). When the roller lock member (150) is rotated, since the first roller column (151) is eccentric relative to the axis of rotation, the first roller column (151) can push the first roller groove (161), to drive the first connection portion (110) to move relative to the surface cover assembly (140), so as to adjust the distance between the first connection portion (110) and the second connection portion (120), thereby eliminating the defects of the adjustment mechanisms in the prior art such as the difficulty in adjustment and the complexity in structure. The structure is simple and reliable, and the operation is convenient.Linvention porte sur un dispositif de réglage despacement (130) utilisé pour régler lespacement entre une première partie de liaison (110) et une seconde partie de liaison (120) dun dispositif de massage de tête, lequel dispositif comprend un ensemble de revêtement de surface (140) disposé à la jonction de la première partie de liaison (110) et de la seconde partie de liaison (120) et un mécanisme dentraînement monté sur lensemble de revêtement de surface (140). Le m
