using elastically deformable material such as rubber to absorb the vibration of the driving part 100 referring to fig4 and 5 the waterproofing member 10 includes a plurality of wrinkled parts 11 and a fixing part 12 extending upward and downward the fixing part 12 includes a first fixing part 12 a extending upward from the wrinkled part 11 and a second fixing part 12 b extending downward from the wrinkled part 11 the waterproofing material 10 is provided in the form of a cylinder surrounding the outer side of the driving part 100 the waterproofing material 10 is disposed between the base plate 200 and the bottom of the body 1 that is between the base plate 200 and the bottom plate 3 of the mounting part 2 the base plate 200 includes a first coupling part 202 having a coupling groove 202 a the first coupling part 202 protrudes from the lower surface of the base plate 200 along the circumference of the base plate 200 while extending outward such that the coupling groove 202 a is coupled to the first fixing part 12 a of the waterproofing member 10 the first fixing part 12 a has an upper end which is bent outward to correspond to the coupling groove 202 a of the first coupling part 202 a wire 15 having a shape of a ring is configured to fasten the outer circumference of the first coupling part 202 of the base plate 200 and the first fixing part 12 a of the waterproofing member 10 thereby allowing the first coupling part 202 to be closely fixed to the first fixing part 12 a the second fixing part 12 b of the waterproofing member 10 is.