The present invention relates to the backrest (13, 13 ') of the barber chair, the inter-operational device (3) on which the eccentric roller (1) and the auxiliary roller (2) are installed on both sides of the base (14) of the barber chair. Mounted inside the cylinder (7) of the wall structure, the adjustment rod (5) attached to the eccentric roller (1) is operated by the action of the adjustment lever (8) mounted on the eccentric roller shaft (4), the eccentric roller (1) When rotating) acts to widen the gap between the two rollers (1, 2), the connecting plate (12, 12 ') interlocked with the backrest (13, 13') is the eccentric roller (1) and the auxiliary roller ( 2) It is possible to adjust the angle of the backrest 13,13 'easily and freely by freely moving back and forth between them.If you put the backrest 13 at the desired position and apply force while flipping back, the connecting plate 12 is pushed forward. Since the eccentric roller 1 is reversed and the gap between the two rollers 1 and 2 is narrowed, the connecting plate 12 'is not moved and interlocks with the connecting plate 12'. The back (13 ') has a back angle adjustment device which is robust braking.
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