Patent ID: 6086391
Filing Date: 2000-07-11
Classification: H01R

Abstract:
A safety socket head for connecting with a socket body to form a socket arrangement for electrically coupling with an electrical plug having at least two plug prongs, comprising:a socket housing which has a first socket slot and a second socket slot parallelly provided thereon,a first shelter means, which is slidably supported inside said socket housing and positioned below said first socket slot, for blocking said first socket slot during a normal condition,a second shelter means, which is slidably supported inside said socket housing and positioned below said second socket slot, for blocking said second socket slot during said normal condition, anda resilient means for retaining said first and said second shelter means in said normal condition so as to shelter any undesired substance to intrude into either said first socket slot or said second socket slot, however when said two plug prongs of said electrical plug are inserted into said first and second socket slots simultaneously, said two plug prongs drive both said first and said second shelter means to slide aside respectively to enable said two plug prongs to insert therethrough into said socket body, moreover when said two plug prongs are detached from said safety socket head, said resilient means inside said socket housing respectively pushing said first and said second shelter means to slide back to said normal condition,wherein said first shelter means, which is slidably disposed below said first and second socket slots inside said socket housing, has a first blocking portion for blocking said first socket slot of said socket housing during said normal condition and a first driving portion positioning right below said second socket slot, said first driving portion of said first shelter means being extended above said first blocking portion and forming a passage groove which has an inclined first guiding edge positioning underneath and sheltering said second socket slot, so that when one of said plug prongs of said electrical plug is plugged in said second socket slot, said inserting plug prong props against said first guiding edge and drives said first shelter means to slide aside until said first blocking portion of said first shelter means is moved away from said first socket slot and does not block said first socket slot,wherein said second shelter means is also slidably disposed below said first and second socket slots inside said socket housing and overlapped with said first shelter means, said second shelter means having a second blocking portion and a second driving portion extended from said second blocking portion, said second blocking portion being positioned under said first driving portion of said first shelter means for blocking said second socket slot of said socket housing during said normal condition, said second driving portion, which is positioned above said first blocking portion of said first shelter means, providing a second passage groove which has an inclined second guiding edge positioning just underneath said first socket slot and sheltering said first socket slot,therefore when one of said plug prongs of said electrical plug is plugged in said first socket slot, said inserting plug prong props against said second guiding edge and drives said second shelter means to slide aside until said second blocking portion of said second shelter means is moved away from said second socket slot and does not block said second socket slot, so that when said two plug prongs of said electrical plug are intruded through said first and second socket slots respectively, both said first and said second shelter means are driven to slide aside until both said first and second blocking portions are moved away from said first and second socket slots respectively, therefore said two plug prongs are able to successfully insert through said socket head into said socket body,however when an undesired substance is intruded into said first socket slot to drive said second shelter means to slide aside, said intrusion of said undesired substance is blocked by said first blocking portion of said first shelter means and said second socket slot is sheltered by said first guiding edge of said first driving portion of said first shelter means, moreover when said undesired substance is only intruded into said second socket slot to drive said first shelter means to slide aside, said intrusion of said undesired substance is blocked by said second blocking portion of said second shelter means and said first socket slot is sheltered by said second guiding edge of said second driving portion of said second shelter means.