JPH01122246U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a front view of a thermal overcurrent relay according to an embodiment of this invention with the cover removed; Fig. 2 is a perspective view of an adjustment screw used in the thermal overcurrent relay according to an embodiment of this invention; Fig. 3 is an explanatory diagram of the screwed state of the adjusting screw used in the thermal overcurrent relay according to the embodiment of this invention, and Fig. 4 is a front view of the conventional thermal overcurrent relay with the cover removed. Figure 5 is a sectional view taken along line A-A in Figure 4, and Figure 6 is a cross-sectional view taken along line B-B in Figure 4. Figure 7 is a cross-sectional view taken along line C-C in Figure 4, Figure 8 is a perspective view of a movable contact used in a conventional thermal overcurrent relay, and Figure 9 is a cross-sectional view taken along line CC in Figure 4. A perspective view of a movable lever used in a conventional thermal overcurrent relay, and FIG. 10 is a perspective view of a main part of a reversing mechanism used in a conventional thermal overcurrent relay. In the figure, 1: case, 1Y: round hole, 3: bimetal, 12: lever support member, 13: adjustment screw, 13a: male thread portion. In addition, in the figures, the same reference numerals and symbols indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] A thermal type that transmits the movement of a bimetal that bends in response to the main circuit current to a contact reversing mechanism, and adjusts the operating current by changing the position of a support member of the contact reversing mechanism. A thermal overcurrent relay characterized in that the position of the support member is changed by rotating an adjustment screw formed by a tuft pin screw on a male threaded portion screwed into a round hole in the case.