EP 0809270 A2 19971126 - Reversing spring contact switching mechanism and thermal overload relay
Title (en)
Reversing spring contact switching mechanism and thermal overload relay
Title (de)
Schaltmechanismus mit reversierendem Federspannungskontakt und thermisches Überlastrelais
Title (fr)
Mécanisme commutateur à contact de ressort réversible et relais thermique de surcharge
Publication
Application
Priority
- JP 12617196 A 19960522
- JP 26820896 A 19961009
Abstract (en)
A reversing spring contact switching mechanism (6) comprises: a single member reversing plate spring (7) in which a lateral pair of outer leg pieces (7a) and a central leg piece (7b) are formed, the central leg piece having a bent spring section (7c) therein; a supporting arm (8) for rollably supporting the tip edges of the outer leg pieces; a supporting arm 9 for applying tensile force to the spring section of the central leg piece while engaging and fixing the tip edge of the central leg piece; a normally closed contact (4a, 11); and a normally open contact (4b, 12). In a thermal overload relay combining this reversing spring contact switching mechanism (6) with a bimetal heat element 2 that responds to an overload current through a main circuit the displacement of a bimetal (2a) of the heat element (2) caused by an overload current is transmitted to the plate spring (7) via a shifter (2c) and a releasing lever (5) to cause the spring to be reversed in order to switch the contacts. <IMAGE>
IPC 1-7
IPC 8 full level
H01H 61/01 (2006.01); H01H 5/18 (2006.01); H01H 5/20 (2006.01); H01H 73/04 (2006.01)
CPC (source: EP)
H01H 5/18 (2013.01); H01H 73/04 (2013.01); H01H 2071/109 (2013.01)
Designated contracting state (EPC)
DE ES FR
DOCDB simple family (publication)
EP 0809270 A2 19971126; EP 0809270 A3 19980902; CN 1173728 A 19980218; JP 3298428 B2 20020702; JP H1040795 A 19980213
DOCDB simple family (application)
EP 97108306 A 19970522; CN 97111444 A 19970522; JP 26820896 A 19961009