Brake device

Second Embodiment

[0060]Next, a brake device 1B according to the second embodiment of the present invention is described.

[0061]As shown in FIG. 4 and FIG. 5, a manual releasing mechanism 11B of a brake device 1B of the present embodiment includes a worm wheel 50 and a moving worm gear mechanism 51.

[0062]The worm wheel 50 is a helical gear which engages with a worm gear main body 53 described later, and it is fixed to the transmission shaft 13 as with the first gear 21 of the first embodiment.

[0063]The moving worm gear mechanism 51 includes: a casing 52; a worm gear main body 53 which cooperates with the worm wheel 50 to function; and a moving shaft 54 which is a rotation shaft of the worm gear main body 53.

[0064]The moving shaft 54 is attached to the casing 52 so as to be able to freely rotate and freely move in the direction orthogonal to the driving shaft S (the rotation shaft of the worm wheel 50). Specifically, both ends of the moving shaft 54 are slidably supported on a pair of bus