Short circuit prevention device
First Claim
1. An electrical leakage prevention device in flooding comprising:
- an input terminal portion including a first input terminal, a second input terminal, and an earth terminal;
an output terminal portion including a first output terminal and a second output terminal;
a terminal polarity fixing portion disposed between the input terminal portion and the output terminal portion, wherein, in connecting the first and second input terminals to a phase voltage terminal and a neutral point terminal of an electrical outlet for an AC power source, irrespective of cases that (i) the first input terminal and the phase voltage terminal are connected to each other, and at the same time the second input terminal and the neutral point terminal are connected to each other, or (ii) on the contrary the first input terminal and the neutral point terminal are connected to each other, and at the same time the second input terminal and the phase voltage terminal are connected to each other, the terminal polarity fixing portion always makes electrical connections that the first output terminal is connected electrically to the neutral point terminal and at the same time the second output terminal is connected electrically to the phase voltage terminal;
a terminal block including a body portion made of insulator and a first connection terminal and a second connection terminal, exposed on the body portion and disposed with an interval to be electrically insulated with each other, and for electrically connecting the first output terminal and the second output terminal to a load respectively; and
a leakage-preventing conductor connected electrically to the first connection terminal connected electrically to the neutral point terminal but disconnected electrically to the second connection terminal connected electrically to the phase voltage terminal, and disposed around the second connection terminal so as to enclose at least one of at least a portion of a side of the terminal block, at least a portion of a top of the terminal block, and at least a portion of each of the side and the top of the terminal block respectively,wherein, by the leakage-preventing conductor, when the terminal block is flooded, most of current from the second connection terminal flows through water and into the leakage-preventing conductor, and thus any current large enough to cause an electrical shock does not flow through other portions in water, preventing electrical leakage and shock.
0 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is a device capable of preventing a short circuit even in the event of flooding. A terminal polarity fixing unit is disposed between an input terminal unit and an output terminal unit such that a first output terminal and a second output terminal are electrically connected to a neutral terminal and to a phase voltage terminal, respectively, all the time, regardless of how first and second input terminals are paired with the phase voltage terminal and the neutral terminal of an alternating-current outlet. First and second connecting terminals are electrically insulated from each other and spaced apart from each other while being exposed to one side of a body unit of a connecting terminal block made from an insulating body, and electrically connect the first and second output terminals to a load. A short circuit prevention conductor is connected to the first connecting terminal, which is in turn connected to the neutral terminal but is not connected to the second connecting terminal, and is arranged in the vicinity of the second connecting terminal so as to surround at least a portion of the side of the connecting terminal block, at least a portion of the upper portion of the connecting terminal block, and at least a portion of each of the side and upper parts of the connecting terminal block. When the connecting terminal block is flooded, the electric current flowing out of the second connecting terminal flows into the short circuit prevention conductor via the water, and an electric current sufficient for causing an electric shock does not flow to other sites.
-
Citations
16 Claims
-
1. An electrical leakage prevention device in flooding comprising:
-
an input terminal portion including a first input terminal, a second input terminal, and an earth terminal; an output terminal portion including a first output terminal and a second output terminal; a terminal polarity fixing portion disposed between the input terminal portion and the output terminal portion, wherein, in connecting the first and second input terminals to a phase voltage terminal and a neutral point terminal of an electrical outlet for an AC power source, irrespective of cases that (i) the first input terminal and the phase voltage terminal are connected to each other, and at the same time the second input terminal and the neutral point terminal are connected to each other, or (ii) on the contrary the first input terminal and the neutral point terminal are connected to each other, and at the same time the second input terminal and the phase voltage terminal are connected to each other, the terminal polarity fixing portion always makes electrical connections that the first output terminal is connected electrically to the neutral point terminal and at the same time the second output terminal is connected electrically to the phase voltage terminal; a terminal block including a body portion made of insulator and a first connection terminal and a second connection terminal, exposed on the body portion and disposed with an interval to be electrically insulated with each other, and for electrically connecting the first output terminal and the second output terminal to a load respectively; and a leakage-preventing conductor connected electrically to the first connection terminal connected electrically to the neutral point terminal but disconnected electrically to the second connection terminal connected electrically to the phase voltage terminal, and disposed around the second connection terminal so as to enclose at least one of at least a portion of a side of the terminal block, at least a portion of a top of the terminal block, and at least a portion of each of the side and the top of the terminal block respectively, wherein, by the leakage-preventing conductor, when the terminal block is flooded, most of current from the second connection terminal flows through water and into the leakage-preventing conductor, and thus any current large enough to cause an electrical shock does not flow through other portions in water, preventing electrical leakage and shock. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification