into the slot 111 and guided thereby and that the runway control pin 140 is inserted into the runway groove 114 and guided thereby four screw holes 124 are formed in the peripheral edge of the first hinge part 120 a waterproof double faced tape 142 in which a hole 142 a is formed to avoid the hole 121 a of the cylindrical projection 121 is disposed on the back surface of the second hinge part 120 further the second case 400 is disposed in the second hinge part 120 across the waterproof double faced tape 142 the second case 400 is fixed to the second hinge part 120 by four screws 143 in a state that the waterproof double faced tape 142 and annular screw hole waterproof tapes 136 through which the respective screws 143 pass are clamped therebetween the screw holes 124 formed in the second hinge part 120 pass through the front and back surfaces of the second hinge part 120 the openings on the front sides of the screw holes 124 are closed by screw hole waterproof tapes 139 to prevent water from entering from the screw holes 124 as in the screw holes 115 of the first hinge part 110 fig7 is an enlarged view of a part of the section of the hinge module shown in fig5 b fig8 is a view showing the portion in a circle r 1 of fig7 in further enlargement the cylindrical projection 121 formed in the second hinge part 120 is caulked across the spacer 134 and the caulking part.