BigPatents India

The present invention is to provide a vent plug for a storage battery improving an electrolyte leakage proof characteristics against vibrations in the up and down direction and the right and left direction. A vent plug for a storage battery comprising a headed tubular body 1 having an opening 1c at the bottom thereof and a splash proof body 2 mounted in the interior of the tubular body 1, characterized in that the splash proof body 2 includes a horizontal base plate 2a engaged with the lower tubular side wall of the tubular body 1 so as to close the opning of the bottom thereof, a support secured upright to the center of the upper surface thereof, and two splash proof plates which are inclined upwards so as to be opposite to each other with the support 2b being held between are formed in a pair so that a ventilation gap is formed by holding the support 2b between the pair of upwardly inclined splash proof plates 2c,2c that at least three pairs of upwardly inclined splash proof plates are arranged at a desired distance spaced apart each other in the vertical direction along the support so that the mutually opposite direction of the pair of upwardly inclined splash proof plates positioned at an upper stage and that of the pair of upwardly inclined splash proof plates positioned at an upper stage and that of the pair of upwardly inclined splash proof plates positioned at a lower stage are shifted with each other so that the positions of the ventilation gaps 5 and 5 formed between the pairs of upwardly inclined splash proof plates 2c and 2c and 2c and 2c positioned at the upper and lower stages, respectively, may be shifted with each other at a certain angle and that a delta shaped space 4 is formed between the upper portion of each place 2c of the pair of upwardly inclined splash proof plates at each stage and the inner surface of the circumferential side wall of the tubular body. Drawing: 04 Sheets. Total Pages: 23. Fig. 01