17 are provided for mounting the electrical operating device in the above described structure besides the combination of the components described above the following components are also provided for the purposes of fixing and assisting of the operation including a first bearing 3 a second bearing 4 a nut 11 a flat washer 12 a retention lid 14 third bolts 21 a first bearing 22 fourth bolts 24 fifth bolts 29 a bearing cover 30 loosening prevention bolts 31 sixth bolts 32 a fourth bearing 39 and a distance setting sleeve 40 these components being retention means necessary for achieving the structure of the present invention but are generally irrelevant to the technical features of the present invention so that details associated with the relationships and positions will not be provided herein the technical features that the present invention adopts to improve the known techniques are as follows the electrical operating device adopts a multiple staged transmission arrangement to thoroughly improve severe wearing and poor transmission efficiency of the prior art and also to effectively use the entire available space in order to achieve the advantages of high transmission efficiency high bearing capacity high speed ratio and small volume it will be understood that each of the elements described above or two or more together may also find a useful application in other types of methods differing from the type described above while certain novel features of this invention have been shown and described and are pointed out in the annexed claim it is not intended to be limited to the details above since it will be understood that various omissions modifications substitutions and changes in the forms and details of the device illustrated and in its operation can be made by those.