Thermal protector for hermetic electrically-driven compressors
First Claim
1. A thermal protector for a hermetic electrically-driven compressor which includes an electric motor and a hermetic housing having a wall in which a hermetic terminal assembly having a plurality of terminal pins is mounted, the protector being mounted inside the compressor housing so as to be opposed to the terminal assembly, the protector comprising:
- a thermal switch comprising;
a metal casing having a generally dome-shaped section and an open end;
a thermal switch mechanism accommodated in the casing;
a header plate hermetically closing the open end of the casing and having a portion parallel to the metal casing in the longitudinal direction thereof, the casing and the header plate integrally forming a flange on the peripheral edges thereof when the header plate is secured to the casing to hermetically close the open end of the casing; and
two terminals one of which is provided with a receptacle into which one of the terminal pins of the terminal assembly is fitted, the other terminal being connected to a common lead wire of the motor; and
a cluster socket having a plurality of terminal cavities provided for connecting windings of the motor to the terminal assembly, the socket including a body which has a face further having a pair of holding portions for holding the flange, the holding portions having at one of the ends, hook-shaped portions respectively, the socket further having a common terminal cavity parallel to the holding portions;
wherein the casing and the socket are integrally connected together such that a larger part of the casing is exposed outside the socket body, when the flange is held by the holding portions and the receptacle is inserted to a position where the same is opposed to said one terminal pin of the terminal assembly.
1 Assignment
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Accused Products
Abstract
A thermal protector for a hermetic electrically-driven compressor includes a thermal switch and a cluster socket. The protector is mounted inside a compressor housing on a terminal assembly mounted in a wall of the compressor housing. A casing of the thermal switch and a header plate hermetically closing an open end of the casing integrally form a flange on the peripheral edges when the header plate is secured to the casing. The thermal switch has two terminals one of which is provided with a receptacle into which one of terminal pins of the terminal assembly is fitted, and the other terminal is connected to a common lead wire of a compressor motor. The cluster socket has a plurality of terminal cavities for connecting windings of the motor to the terminal assembly. A body of the socket has a face having a pair of holding portions for holding the flange. Each holding portion has a hook-shaped portion at an end. The casing and the socket are integrally connected together such that a large part of the casing is exposed outside the socket body, when the flange is held by the holding portions and the receptacle is inserted to a position where it is opposed to the one terminal pin of the terminal assembly.
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Citations
6 Claims
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1. A thermal protector for a hermetic electrically-driven compressor which includes an electric motor and a hermetic housing having a wall in which a hermetic terminal assembly having a plurality of terminal pins is mounted, the protector being mounted inside the compressor housing so as to be opposed to the terminal assembly, the protector comprising:
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a thermal switch comprising; a metal casing having a generally dome-shaped section and an open end; a thermal switch mechanism accommodated in the casing; a header plate hermetically closing the open end of the casing and having a portion parallel to the metal casing in the longitudinal direction thereof, the casing and the header plate integrally forming a flange on the peripheral edges thereof when the header plate is secured to the casing to hermetically close the open end of the casing; and two terminals one of which is provided with a receptacle into which one of the terminal pins of the terminal assembly is fitted, the other terminal being connected to a common lead wire of the motor; and a cluster socket having a plurality of terminal cavities provided for connecting windings of the motor to the terminal assembly, the socket including a body which has a face further having a pair of holding portions for holding the flange, the holding portions having at one of the ends, hook-shaped portions respectively, the socket further having a common terminal cavity parallel to the holding portions; wherein the casing and the socket are integrally connected together such that a larger part of the casing is exposed outside the socket body, when the flange is held by the holding portions and the receptacle is inserted to a position where the same is opposed to said one terminal pin of the terminal assembly. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification