JPS62116428U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing a set state of an embodiment of the present invention, Fig. 2 is an exploded perspective view of a trip device and a contact device used in the above, and Fig. 3 is a trip device and a contact device used in the same. FIG. 4 is a perspective view of a tripping device used in the above, FIG. 5 is an exploded perspective view of a tripping device used in the same, and FIG.
The figure is a perspective view of the bottom side of the bushing used for the same as above.
Fig. 7 is a developed view of the coil used in the above, Fig. 8 a, b is a perspective view showing the joining order of the cradle and the first link used in the above, Fig. 9 a, b, c is used in the same as the above. 10a and 10b are explanatory diagrams of the operation of the compression spring of the contact device used in the above, and FIG. 11 shows the state in which a short circuit current is applied in the same as above. FIG. 12 is a cross-sectional view showing the same as above when the trip operation is performed, FIG. 13 is a cross-sectional view showing the same as the above in the reset state, and FIG. 14 is a cross-sectional view showing the same as the above in the off state. 1 is a housing, 10 is a trip device, 40 is a trip device, 41 is a holding frame, 110 is a contact device, 111 is a movable contact, 112 is a movable contact, 113 is a compression spring, 114 is an axis pin, and 121 is a crossbar. , 122 is a contact holding part.

Claims (1)

[Scope of utility model registration request] A trip device that is activated when an excessive current passes through it, and a trip device that performs a trip operation when the trip device is activated in a set state that accumulates spring force and is configured by attaching a plurality of links and springs to a holding frame. A molded circuit breaker in which a device and a contact device, which is mechanically connected to a trip device and opens a contact inserted into a main circuit in accordance with the tripping operation of the trip device, are housed in a fixed position in a housing. , the contact device includes a movable contactor having a movable contact;
A cross bar is provided with a contact holding part that is rotatably held in a fixed position in the housing and rotatably holds a movable contact; It consists of a coiled compression spring that applies a spring force in a plane perpendicular to the axial direction of the crossbar, and when the spring force acts on the movable contact in the direction of closing the contact, both ends of the compression spring A first spring receiving surface that is perpendicular to the direction in which the two ends of the compression spring are connected and a second spring receiving surface that is perpendicular to the direction in which both ends of the compression spring are connected when the spring force acts in the direction in which the contacts open are continuous via the edge. A spring receiving protrusion is formed in the contact holding part, and is inserted into one end of the compression spring on the contact holding part side so as to extend over both spring receiving surfaces. A circuit breaker for wiring, in which a spring receiving tongue protruding from a movable contact is inserted, and the other end of a compression spring comes into elastic contact with a spring receiving pin inserted through the movable contact.