Single-pole single-throw vacuum relay

Abstract

The invention discloses a single-pole single-throw vacuum relay which comprises a ceramic vacuum chamber and two contact point poles which penetrate through the side walls of the vacuum chamber in a sealed manner, a contact piece is positioned on one end of one contact point pole, which faces the inside of the vacuum chamber, a contact point is respectively arranged on one end of the other contact point pole, which faces the inside of the vacuum chamber, the ceramic vacuum chamber is in the shape of an open cylinder, a slotted contact point is arranged on one contact point pole and contacts one end of the contact piece in a positioned manner, a contact point is arranged on the other contact point pole, a ceramic point corresponding to the contact point is formed on the inner wall of the vacuum chamber, the other end of the contact point is located between the contact point and the ceramic point, namely, a traditional single-pole double-throw vacuum relay layout is formed among the contact piece, the contact point and the ceramic point. The structure basically remains the appearance of the same level of single-pole double-throw vacuum relay, and the inner structure of a ceramic component is redesigned, so that a single-pole double-throw vacuum relay can be rapidly improved to the single-pole single-throw vacuum relay.

Description

technical field [0001] The invention relates to a relay, in particular to a single-pole single-throw vacuum relay with only two contact point rods. Background technique [0002] At present, the existing circular single-pole double-throw (three-contact) relays on the market are mature vacuum relays, and their typical contact structures are as follows: figure 1 , under the premise of keeping basically the same technical conditions and installation appearance, design SPST relays (two-contact relays). In order to avoid interference caused by redundant contacts, the method of shortening or removing redundant contacts is generally adopted. The design Or the electric field interference of redundant contacts cannot be completely avoided or other mechanisms for controlling the movement of the armature must be used, thereby bringing about other negative effects. Contents of the invention [0003] In order to overcome the above-mentioned defects, the present invention provides a sin...

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Problems solved by technology

[0002] At present, the existing circular single-pole double-throw (three-contact) relays on the market are mature vacuum relays, and their typical contact structures are as follows: figure 1 , under the premise of maintaining basically the same technical conditions and installation appearance, design SPST relays (two-contact relays). In order to avoid interference caused by redundant contacts, the method of shortening or removing redundant contacts is generally adopted. The design Or the electric field interference of redundant contacts cannot be completely avoided or other mechanisms to control the movement of the armature must be used, resulting in other negative effects

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