Waterproof structure provided on device

Abstract

A waterproof structure that is provided on a device includes a waterproof member. A pipe with no flash of a parting line, which is formed by extrusion-molding an elastic material such as a rubber or a resin, is used as the waterproof member. The waterproof member is interposed at a coupling part between members that is to be waterproofed, such that terminal-end faces of the pipe are disposed to be opposed to each other with their center (axes) being aligned (coaxial). When pressure is applied by engagement between the to-be-waterproofed members, the terminal-end faces of the pipe are put in close contact with each other. Alternatively, terminal-end portions of the pipe are juxtaposed with their centers being made parallel, and when pressure is applied, side faces of the terminal-end portions are put in close contact with each other. Thus, waterproofing is effected.

What is claimed is:  
     
         1 . A waterproof structure that is provided on a device, comprising: 
 a waterproof member that is interposed between a first member and a second member and is put in close contact with the first member and the second member by elastic deformation, thereby effecting waterproofing,    wherein the waterproof member is a pipe that is formed by extrusion-molding a material with elasticity and anti-permeation properties, terminal-end faces of the pipe are disposed to be opposed to each other with their centers being aligned, and the pipe is extended by pressure that acts when the first member and the second member are engaged or attached to each other, whereby the terminal-end faces of the pipe are brought into close contact with each other and waterproofing is effected.    
     
     
         2 . The waterproof structure according to  claim 1 , wherein the waterproof member is formed by extrusion-molding a rubber or a resin, and the waterproof member has one of a perfect circular shape, a rectangular shape, a polygonal shape and an oval shape.  
     
     
         3 . The waterproof structure according to  claim 1 , wherein the pipe has terminal-end faces at both ends, 
 the waterproof structure includes a groove as a grooved portion that is formed in the first member in an annular shape, and a projection portion that is formed on the second member for engagement with the groove, and    the pipe is fitted in the groove as the grooved portion such that the terminal-end faces of the pipe are opposed to each other at a distance with their centers being aligned, and the pipe is extended along the groove as the grooved portion when an outer peripheral surface of the pipe is pressed by engagement between the first member and the second member, whereby the terminal-end faces of the pipe are brought into close contact with each other.    
     
     
         4 . A waterproof structure that is provided on a device, comprising: 
 a waterproof member that is interposed between a first member and a second member and is put in close contact with the first member and the second member by elastic deformation, thereby effecting waterproofing,    wherein the waterproof member is a pipe that is formed by extrusion-molding a material with elasticity and anti-permeation properties, terminal-end portions of the pipe are disposed to be adjacent to each other with their centers being made parallel, and an outer periphery of the pipe is collapsed by pressure that acts when the first member and the second member are engaged or attached to each other, whereby the side faces of the terminal-end portions of the pipe are brought into close contact with each other and the pipe is brought into close contact with the first member and the second member, thus effecting waterproofing.    
     
     
         5 . The waterproof structure according to  claim 2 , wherein an annular groove as a grooved portion is formed in the first member, the pipe is fitted in the groove, and terminal-end portions of the pipe are disposed to be adjacent to each other with their centers being made parallel, 
 a projection portion, which is engaged with the groove as the grooved portion, is formed on the second member, and    when a pressure is applied to an outer periphery of the pipe by engagement between the first member and the second member, the pipe is brought into close contact with the first member and the second member and side faces of the terminal-end portions of the pipe are brought into close contact with each other, thereby effecting waterproofing.    
     
     
         6 . A waterproof structure that is provided on a device, comprising: 
 a waterproof member that is interposed between a first member and a second member and is put in close contact with the first member and the second member by elastic deformation, thereby effecting waterproofing,    wherein the waterproof member is a pipe that is formed by extrusion-molding a material with elasticity and anti-permeation properties, and has terminal-end faces at both ends,    the first member is formed as an outer L-rib having a close-contact face at a wall face thereof, and the second member is formed as an inner L-rib that is engaged with the outer L-rib, and    the pipe is fitted on an inner wall face of the outer L-rib such that the terminal-end faces of the pipe are opposed to each other at a distance with their centers being aligned, and the pipe is extended along the inner wall face of the outer L-rib when an outer peripheral surface of the pipe is pressed by engagement between the first member and the second member, whereby the terminal-end faces of the pipe are brought into close contact with each other.    
     
     
         7 . The waterproof structure according to  claim 1 , wherein the pipe has terminal-end faces at both ends, 
 the first member has a U-groove that is formed in an annular shape,    the second member has a flat surface which opposes the first member;    the pipe is disposed in the U-groove such that the terminal-end faces of the pipe are opposed to each other at a distance with their centers being aligned, and the pipe extends along the U-groove when the pipe is pressed as the first member and the second member are made to contact each other, whereby the terminal-end faces of the pipe are brought into close contact with each other.    
     
     
         8 . The waterproof structure according to  claim 1 , wherein the pipe has terminal-end faces at both ends, 
 the first member and the second member have U-grooves, each with an annular shape, which are formed to face each other,    the pipe is disposed in the U-grooves such that the terminal-end faces of the pipe are opposed to each other at a distance with their centers being aligned, and the pipe is extended along the U-grooves when an outer periphery of the pipe is pressed by as the first member and the second member are made to contact each other, whereby the terminal-end faces of the pipe are brought into close contact with each other.