Water-proof motor

The utility model provides a water-proof motor, its inside at the casing is provided with the brush motor, can not increase the part number of packages and receive the damage that comes from the outside with regard to the information of avoiding the local instrument. Change for opening (54) that are used for change carbon brush (25) are provided with at motor casing (16). In addition, install at motor casing (16) and cover (61) to changing the brush holder that goes on closing with opening (54). It has display area portion (56) to set for in order difference global (55) of motor casing (16) closed by this brush holder cover (61). Paste to have in this display area portion (56) and make serial number sealing member (57), if open brush holder cover (61), then can the externally look and recognize. This manufacturing serial number sealing member (57) is located the position of being closed by brush holder cover (61), and brush holder cover (61) carries out the essential structure of closing to opening for the change (54) that are used for changing carbon brush (25).