of the cover 58 has a shape which does not prevent escaping of the inner mirror by the pivoting movement of the stay 32 e g the stay 32 does not collide against the cover 58 the pivotal movement of the stay 32 stops before the stay 32 abuts against a front glass 74 by abutting engagement of a portion of the stay 32 with a stopper not shown formed in the stay base or other part the state in which the stay 32 is pivoted upward is maintained by friction between the stay base 10 and the stay 32 caused by the energizing force of the coil spring 52 e g by fitting engagement between the depressions 50 and the projections 26 other than the normal fitting engagement therebetween by pulling the stay 32 toward the passenger from this state the stay 32 is pivoted toward the passenger against the energizing force of the coil spring 52 and the fitting engagement between the depressions 50 and the projections 26 is restored to the state shown in fig1 a in which they are fitted in the normal fitting position as shown in fig3 surfaces of the projections 26 and the depressions 50 in the direction of relative pivotal movement therebetween may be formed in tapered surfaces so that fitting engagement and disengagement between the projections 26 and the depressions 50 will be made smoothly in the above described embodiment the shaft 24 is formed in the stay.