[0069] Embodiment three:
[0070] A three-saw type wall switch with double seals, this embodiment is further limited on the basis of embodiment 1 or embodiment 2, and this embodiment includes all the structural features of embodiment 1 or embodiment 2 , and make the following restrictions:
[0071] It also includes a deformable second seal 20 after being stressed. The second seal 20 is in the shape of a square ring and includes a first sealing edge 201, a second sealing edge 202, and a third sealing edge connected end to end in sequence. 203 and the fourth sealing edge portion 204, the opposite edge of the first sealing edge portion 201 is the third sealing edge portion 203, and the opposite edge of the second sealing edge portion 202 is the fourth sealing edge portion 204;
[0072] The fourth press frame 9 is in the shape of a square ring, comprising a first side portion 91 of the fourth press frame connected end to end, a second side portion 92 of the fourth press frame, a third side portion 93 of the fourth press frame and a fourth side portion of the fourth press frame. The fourth side portion 94 of the press frame, the opposite side of the first side portion 91 of the fourth press frame is the third side portion 93 of the fourth press frame, and the opposite side of the second side portion 92 of the fourth press frame is the fourth press frame. the fourth side portion 94 of the frame;
[0073] The structures of the first press frame 6 and the third press frame 8 are the same, and both include a first main body press portion 61 in the shape of a square ring and a first flange press portion 62 in the shape of a “cup”. In this embodiment, The first press frame 6 and the third press frame 8 are symmetrically distributed with the second press frame 7 as the center of symmetry;
[0074] The first main body pressing portion 61 includes a first main body side portion 611, a second main body side portion 612, a third main body side portion 613 and a fourth main body side portion 614 connected end to end in sequence, and the opposite side of the first main body side portion 611 is the second main body side portion 611. Three main body sides 613, the side opposite to the second main body side 612 is the fourth main body side 614;
[0075] The first flange pressing portion 62 includes a first flange portion 621 , a second flange portion 622 and a third flange portion 623 , and the opposite side of the first flange portion 621 is the third flange portion 623 , the tail end of the first flange edge portion 621 is connected to the head end of the second flange edge portion 622, and the tail end of the second flange edge portion 622 is connected to the head end of the third flange edge portion 623;
[0076] The first flange 621 extends outward from the first main body 611 , the second flange 622 extends outward from the second main body 612 , and the third flange 623 extends from the third main body 613 extend outward;
[0077] The second pressure frame 7 includes a second main body pressure portion 71 in a square ring shape and a second flange pressure portion 72 in a “two” shape;
[0078] The second main body pressure portion 71 includes a fifth main body edge portion 711, a sixth main body edge portion 712, a seventh main body edge portion 713 and an eighth main body edge portion 714 connected end to end in sequence, and the opposite side of the fifth main body edge portion 711 is the second main body edge portion 711. Seven main body sides 713, the opposite side of the sixth main body side 712 is the eighth main body side 714;
[0079] The second flange pressing portion 72 includes a fourth flange portion 721 and a fifth flange portion 722, and the opposite side of the fourth flange portion 721 is the fifth flange portion 722;
[0080] The fourth flange edge 721 extends outward from the fifth body edge 711 , and the fifth flange edge 722 extends outward from the seventh body edge 713 ;
[0081] The second seesaw 3 is located between the first seesaw 2 and the third seesaw 4, the second press frame 7 is located between the first press frame 6 and the third press frame 8, and the second grid 55 is located between the first grid 54 and the third press frame 8. Between the 3rd grid 56, the 4th main body edge portion 614 of the first press frame is facing the 8th main body edge portion 714 of the second press frame and leaves a certain interval between them, the second press frame The sixth main body edge 712 is facing the fourth main body edge 614 of the third pressure frame with a certain distance between them;
[0082] The first flange portion 621 of the first pressure frame, the fourth flange portion 721 of the second pressure frame and the first flange portion 621 of the third pressure frame are collinear, but the first pressure frame Between the first flange portion 621 of the second pressure frame and the fourth flange portion 721 of the second pressure frame, between the fourth flange portion 721 of the second pressure frame and the first flange portion 621 of the third pressure frame There is a certain interval between them, and the first flange edge portion 621 of the first pressure frame, the fourth flange edge portion 721 of the second pressure frame and the first flange edge portion 621 of the third pressure frame are all pressed on the second pressure frame. On the first sealing edge portion 201 of the second sealing member, the first sealing edge portion 201 of the second sealing member is pressed on the first edge portion 91 of the fourth pressure frame;
[0083] The second flange portion 622 of the first pressure frame presses on the second sealing edge portion 202 of the second sealing member, and the second sealing edge portion 202 of the second sealing member presses on the second edge portion 92 of the fourth pressing frame superior;
[0084] The third flange portion 623 of the first pressure frame, the fifth flange portion 722 of the second pressure frame and the third flange portion 623 of the third pressure frame are collinear, but the first pressure frame Between the third flange portion 623 of the second pressure frame and the fifth flange portion 722 of the second pressure frame, between the fifth flange portion 722 of the second pressure frame and the third flange portion 623 of the third pressure frame There is a certain interval between them, and the third flange edge portion 623 of the first pressure frame, the fifth flange edge portion 722 of the second pressure frame and the third flange edge portion 623 of the third pressure frame are all pressed on the third flange edge portion 623 of the third pressure frame. On the third sealing edge portion 203 of the second sealing member, the third sealing edge portion 203 of the second sealing member is pressed on the third edge portion 93 of the fourth pressure frame;
[0085] The second flange portion 622 of the third pressure frame presses on the fourth sealing edge portion 204 of the second sealing member, and the fourth sealing edge portion 204 of the second sealing member presses on the fourth edge portion 94 of the fourth pressing frame superior.
[0086] In this embodiment, along the direction toward the wall, the first flange pressing portion 62 of the first pressure frame, the second flange pressing portion 72 of the second pressure frame and the first flange pressing portion 62 of the third pressure frame are all located at The front of the fourth pressure frame 9, so that the second seal 20 is clamped on the first flange pressure part 62 of the first pressure frame, the second flange pressure part 72 of the second pressure frame and the third pressure frame between the first flange pressing portion 62 and the fourth pressing frame 9 .