Rotary tulip contact and contact system for switching device

Abstract

The invention relates to a rotary tulip contact. The rotary tulip contact comprises a closed ring support and a ring spring. A plurality of contact blade holes are uniformly and annularly distributed in the support. The ring spring is used for fixing contact blades in the contact blade holes. A plurality of movable and fixed contact blades forming the tulip contact are arranged in the contact blade holes. A semispherical raised part at the bottom of each movable contact blade is arranged in a U-shaped sunken groove on the top of the corresponding fixed contact blade, and is movably connected with the sunken groove in a rotating way. The rotary tulip contact has the advantages that contact surfaces between the contact blades and conducting rods are annular surfaces, so that the conventional point contact is avoided; and moreover, when fixed conducting rods are inserted into the ends of the movable contact blades, the raised parts of the movable contact blades can rotate to a certain degree in the sunken grooves, and the movable contact blades can return to original positions under the action of the external spring, so that the problem of suspension of a part of contact blades during the use of the tulip contact is solved, and the safety of high / low-voltage switches is effectively improved.

Description

technical field [0001] The invention relates to the technical field of switch devices, in particular to a rotary tulip contact and a contact system for a switch device. Background technique [0002] In the prior art, the plum blossom contact system is widely used in high-voltage and low-voltage switchgears to provide connection between the dynamic and static conductive rods and the switchgear to achieve the function of turning on and off the current. [0003] At present, the common plum blossom contacts for switchgear are known, such as Figure 1-3 Common plum blossom contacts shown, such as figure 1 As shown, the two ring brackets are fixed by a plurality of rivets, and a plurality of contacts are installed in the contact holes of the ring bracket, and then a plurality of ring springs are used to surround and fix the contacts. The ring springs are as follows: figure 2 As shown, the disadvantages of the plum blossom contact with this structure are: the starting point of t...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a rotary plum blossom contact and contact system for switchgear, which has a simple structure and good heat dissipation, and can effectively prevent the problem of the contact piece hanging in the air when the conductive rod is inserted, so as to overcome the current existing The above-mentioned deficiencies in the technology

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