JPS6365937U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a thermal overcurrent relay according to an embodiment of this invention with the cover removed, and Figure 2 is a cross-sectional view of the thermal overcurrent relay according to the embodiment of this invention when cut along the cutting line U-U in Figure 1.
Cross-sectional view, FIG. 3 is a V-V cross-sectional view when cut along the cutting line V-V in FIG. 1, and FIG. 4 is a main part W when cut along the cutting line W--W in FIG. 1. -W
5 is a sectional view taken along line XX in FIG. 1, and FIG. 6 is a heating element used in a thermal overcurrent relay according to an embodiment of this invention. 7 is an exploded perspective view of the normally open contact and reset device parts used in the thermal overcurrent relay according to the embodiment of this invention, and FIG. 8 is an illustration of the implementation of this invention. FIG. 9 is an exploded perspective view of the parts of the normally closed contact and reversing mechanism used in the thermal overcurrent relay of the example, and FIG. A perspective view of the lever, FIG. 10 is a rear view of a thermal overcurrent relay according to an embodiment of this invention, FIG. 11 is a front view of a conventional thermal overcurrent relay with the cover removed, and FIG. The figure is an AA sectional view when cut along the cutting line AA in Fig. 11, and Fig. 13 is a BB sectional view when cut along the cutting line BB in Fig. 11.
Fig. 14 is a cross-sectional view taken along the cutting line C-C in Fig. 11, Fig. 15 is a perspective view of a movable contact used in a conventional thermal overcurrent relay, and Fig. 16 17 is a perspective view of a movable lever used in a conventional thermal overcurrent relay, and FIG. 17 is a perspective view of essential parts of a reversing mechanism used in a conventional thermal overcurrent relay. In the figure, 1: case, 1Z: protruding shaft, 3:
Bimetal, 25: normally open movable contact, 56: normally closed movable contact, 62: first lever, 62a: cylindrical portion. In addition, in the figures, the same reference numerals and symbols indicate the same or equivalent parts.

Amendment September 16, 1982 The brief description of the drawing is amended as follows. "Cover showing thermal overcurrent relay" on page 34, line 16 to line 17 of page 34 of the specification is corrected to "cover for thermal overcurrent relay."

Claims (1)

[Claims for Utility Model Registration] (1) The movement of the bimetal that curves in response to the main circuit current is transmitted to the reversing mechanism section consisting of a toggle mechanism, and the normally closed contact and the normally open contact are operated in conjunction with each other by the interlocking means. In a thermal overcurrent relay, the interlocking means for transmitting the operation of the reversing mechanism of one contact to the other contact is rotated around an axis whose center of gravity is substantially the same as the center of rotation. A thermal overcurrent relay characterized by comprising: (2) The lever that rotates around the axis consists of arms that extend in three directions around the axis that is the center of rotation,
engaging the normally closed movable contact of the normally closed contact with the first arm;
engaging the normally open movable contact of the normally open contact with the second arm;
The thermal overcurrent relay according to claim 1, characterized in that the tip of the third arm serves as an operation indicator.