CN-224204050-U - High-voltage direct-current relay

CN224204050UCN 224204050 UCN224204050 UCN 224204050UCN-224204050-U

Abstract

The utility model relates to the field of relays, and provides a high-voltage direct-current relay which comprises a shell, an electric contact part and a magnetic attraction action part, wherein inert gas is sealed and filled in the shell, the electric contact part is arranged at the inner top of the shell, the magnetic attraction action part is arranged at the inner bottom of the shell and is used for driving the electric contact part to be communicated with electricity after electricity is connected, the magnetic attraction action part comprises a magnetic yoke unit and an iron core unit arranged in the magnetic yoke unit, the magnetic yoke unit comprises a U-shaped magnetic yoke and a fixed magnetic yoke which is covered on an opening of the U-shaped magnetic yoke, a bending notch is arranged on the side edge of a bending part of the U-shaped magnetic yoke, and the bottom plate part of the U-shaped magnetic yoke is of a polygonal structure. The U-shaped magnetic yoke adopts two structural designs, namely the bottom plate is of polygonal structural design, so that the U-shaped magnetic yoke is bent and produced, and the production difficulty is reduced. And the two side plates of the U-shaped magnetic yoke are designed through the folded edges, so that a space between the two side plates is round-like, more coil turns can be accommodated, the electromagnetic performance of the magnetic yoke is enhanced, and the overall working efficiency of the relay is improved.

Inventors

TIAN XINJIANG
ZHU QIMIN
Yin Peigen

Assignees

浙江绿马电气有限公司

Dates

Publication Date: 20260505
Application Date: 20250425

Claims (10)

1. The high-voltage direct-current relay is characterized by comprising a shell, an electric contact part and a magnetic attraction action part, wherein the shell is internally sealed and filled with inert gas, the electric contact part is arranged at the inner top of the shell, and the magnetic attraction action part is arranged at the inner bottom of the shell and is used for driving the electric contact part to be communicated with electricity after the electricity is connected; The magnetic attraction action part comprises a magnetic yoke unit and an iron core unit arranged in the magnetic yoke unit, and the magnetic yoke unit comprises a U-shaped magnetic yoke and a fixed magnetic yoke covered on an opening of the U-shaped magnetic yoke; The side of the bending part of the U-shaped magnetic yoke is provided with a bending notch, and the bottom plate part of the U-shaped magnetic yoke is of a polygonal structure.
2. The high-voltage direct current relay according to claim 1, wherein the bottom plate part of the U-shaped magnetic yoke is square, and the side edge of the U-shaped magnetic yoke is aligned with the bending structure which is arranged by inwards bending the part of the bending notch; The side top surface of U type yoke is provided with the spacing groove that is used for the block fixed yoke.
3. The high-voltage direct-current relay according to claim 1 or 2, wherein the iron core unit comprises an iron core, a coil frame sleeved outside the iron core and a coil wound on the coil frame, a circuit board electrically connected with the coil is arranged on the shell, and the contact part is electrically connected with the circuit board.
4. The high voltage direct current relay as recited in claim 1, wherein the electrical contact portion comprises a main circuit moving contact, a contact spring arranged between the main circuit moving contact and the magnetic attraction moving portion, and two contact binding posts arranged on the shell at intervals with the main circuit moving contact, and a first supporting piece for placing the contact spring is arranged at the top of the iron core unit.
5. The high voltage direct current relay as recited in claim 4, wherein at least two protruding structures for electrical connection with the contact terminals are provided on one end of the top surface of the main circuit moving contact.
6. The high voltage direct current relay of claim 4, wherein the contact part further comprises an auxiliary moving contact, a protective piece for installing the auxiliary moving contact and a second supporting piece for connecting the protective piece and the first supporting piece, and two auxiliary fixed contacts which are arranged at intervals with the auxiliary moving contact are arranged on the shell.
7. The high voltage direct current relay as recited in claim 6, wherein a furcation structure for propping and electrically connecting with the auxiliary fixed contact is arranged on one end of the top surface of the auxiliary moving contact.
8. The high voltage direct current relay as recited in claim 4, wherein an end face of the contact terminal is provided with an electric receiving cavity, and a torsion shaft section for preventing the adhesive from separating when the contact terminal is twisted is arranged in the middle of the contact terminal.
9. The high voltage direct current relay of claim 8 wherein said torsion bar section is a polygonal groove configuration, a convex configuration or a planar configuration.
10. The high-voltage direct-current relay as recited in claim 1, wherein the shell is provided with a permanent magnet on the side wall of the contact part, and a plurality of ribs are arranged on the inner side surface of the contact part.

Description

High-voltage direct-current relay Technical Field The utility model relates to the field of relays, in particular to a high-voltage direct-current relay. Background A Relay, also called Relay, is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), commonly used in automatic control circuits, and is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, the circuit plays roles of automatic regulation, safety protection, circuit switching and the like. However, in the aspect of design, for example, the wiring torque is larger, the situation that the welding or bonding positions of the contact binding posts are separated easily occurs, the tightness is damaged, the built-in inert gas leaks, and the problem that the use safety of the relay is reduced or even burnt out is caused. Or the reliability of the contact connection between the contacts is insufficient, and the contact failure is liable to occur after a period of use in a single-point connection. Or the magnetic yoke is structurally designed to ensure that the electromagnetic performance of the iron core is reduced in order to ensure that the production process is simple, or to ensure that the electromagnetic performance of the iron core is complex in production process, the production cost is improved, and the like. In order to solve the problems, the utility model provides a high-voltage direct-current relay with an optimized structure, so as to overcome the defects of the existing high-voltage direct-current relay. Disclosure of utility model The utility model aims to provide a high-voltage direct-current relay, which aims to solve the problems that the existing high-voltage direct-current relay is insufficient in structural stability or poor in switching performance in use. The high-voltage direct current relay comprises a shell, an electric contact part and a magnetic attraction action part, wherein the shell is internally sealed and filled with inert gas, the electric contact part is arranged at the inner top of the shell, and the magnetic attraction action part is arranged at the inner bottom of the shell and is used for driving the electric contact part to be communicated with electricity after the electricity is connected; The magnetic attraction action part comprises a magnetic yoke unit and an iron core unit arranged in the magnetic yoke unit, and the magnetic yoke unit comprises a U-shaped magnetic yoke and a fixed magnetic yoke covered on an opening of the U-shaped magnetic yoke; The side of the bending part of the U-shaped magnetic yoke is provided with a bending notch, and the bottom plate part of the U-shaped magnetic yoke is of a polygonal structure. Preferably, the bottom plate part of the U-shaped magnetic yoke is square, the side edge of the U-shaped magnetic yoke is aligned with the bending structure which is formed by inwards bending the part of the bending notch, and the top surface of the side edge of the U-shaped magnetic yoke is provided with a limiting groove for clamping the fixed magnetic yoke. Preferably, the iron core unit comprises an iron core, a coil rack sleeved outside the iron core and a coil wound on the coil rack, a circuit board electrically connected with the coil is arranged on the shell, and the contact part is electrically connected with the circuit board. Preferably, the power receiving contact part comprises a main loop moving contact, a contact spring arranged between the main loop moving contact and the magnetic attraction action part, and two contact binding posts which are arranged on the shell at intervals with the main loop moving contact, and a first supporting piece for placing the contact spring is arranged at the top of the iron core unit. Preferably, at least two protruding structures for electrically connecting with the contact binding posts are arranged on one end of the top surface of the main loop moving contact. Preferably, the contact part further comprises an auxiliary moving contact, a protective piece for mounting the auxiliary moving contact and a second support piece for connecting the protective piece and the first support piece, and two auxiliary fixed contacts arranged at intervals with the auxiliary moving contact are arranged on the shell. Preferably, a bifurcation structure for propping and electrically connecting with the auxiliary fixed contact is arranged at one end of the top surface of the auxiliary moving contact. Preferably, an electric receiving cavity is arranged on one end face of the contact terminal, and a torsion-resistant shaft section for preventing the adhesive from separating during self torsion is arranged in the middle of the contact terminal. Preferably, the torsion shaft section is a polygonal groove structure, a polygonal protrusion structure or a polygonal plane structure. Preferably, the shell is provided with a permanent magnet on t