Spiral tube type adjustable electromagnetic release

Abstract

The invention relates to a spiral tube type adjustable electromagnetic release which comprises a rotary knob, an adjustable lever, a movable iron core, a static iron core, a support, a coil, a draw bar, a supporting frame and a base, wherein the coil is sheathed on a coil frame; the static iron core is arranged in a coil frame and is fixed with the support; the movable iron core is arranged above the static iron core; the upper end of the movable iron core is connected with the draw bar; the upper end of the base is fixedly provided with the supporting frame; the adjustable lever is arranged in the supporting frame by a revolute pair; the draw bar is arranged in the base by the revolute pair; a hanger is arranged at the lower side of the adjustable lever along the radial direction of the adjustable lever in a stretching way; a spring is connected between the hanger and the draw bar; a contact arm is arranged at the upper side of the adjustable lever; an adjustable surface with the variable radius is arranged on the outer wall of the rotary knob; and the adjustable surface is contacted with the end surface of the contact arm. The adjustable lever is contacted with the adjustable surface formed by Archimedes spiral curved surfaces on the rotary knob; when the rotary knob is rotated, the adjustable lever can be rotated; the rotation of the adjustable lever drives the upper end of the spring to move, thereby adjusting the length of the spring and realizing the linear adjustment of the setting value of short-circuit action currents.

Description

Technical field: [0001] The invention relates to the electrical field, in particular to a low-voltage electromagnetic release, in particular to a solenoid-type adjustable electromagnetic release. Background technique: [0002] In the prior art, the Chinese invention patent "coil type electromagnetic tripper" (notification number CN201311895Y) discloses an adjustable electromagnetic tripper, which includes a knob, an adjustment rod, a spring, a moving iron core, The static iron core, the coil, the magnetic guide plate and the base also include a push rod pivoted on the upper end of the base, one end of the spring is connected with the adjustment rod, and the other end is connected with the push rod, and the upper end of the moving iron core passes through the After passing through the magnetic conductive plate, it forms an active connection with the push rod. The length of the spring is adjusted by the knob to realize the linear adjustment of the setting value of the short-c...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a solenoid-type adjustable electromagnetic release, which needs to solve the problem of the many and complicated transmission chains of the adjustment mechanism of the electromagnetic release in the prior art. , technical problems of inconvenient assembly

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