CN213401029U

CN213401029U - Electromagnetic relay with auxiliary contact

Info

Publication number: CN213401029U
Application number: CN202022626798.4U
Authority: CN
Inventors: 陈丽
Original assignee: Wuhan Runling Technology Co ltd
Current assignee: Wuhan Runling Technology Co ltd
Priority date: 2020-11-13
Filing date: 2020-11-13
Publication date: 2021-06-08
Anticipated expiration: 2030-11-13

Abstract

The utility model relates to an electromagnetic relay with auxiliary contacts, which comprises a relay shell; a fixed armature component is arranged in the relay shell; a movable armature is arranged at the lower side of the fixed armature component, and a movable contact is arranged at the end part of the movable armature; a static contact is arranged at the end part of the fixed armature component; a coil rack is arranged at the lower side of the fixed armature component; an iron core is wrapped in the coil frame; one end of the movable armature is connected with the relay shell through a spring; the other end of the movable armature is provided with an auxiliary elastic sheet; the auxiliary elastic sheet is provided with an auxiliary contact. The utility model discloses in, move armature's rotation route and pass through the guide arm and prescribe a limit to, can prevent effectively that the relay from after suffering the collision, moving armature's position and changing, lead to actuating, can not contact completely between the stationary contact. The accuracy of the relay is ensured. Meanwhile, when the magnetic attraction force borne by the broken electric armature of the iron core disappears, the auxiliary contact and the auxiliary elastic sheet can push the broken electric armature to be separated from the static contact together with the main elastic sheet, and the anti-adhesion capability of the movable armature is greatly improved.

Description

Electromagnetic relay with auxiliary contact

Technical Field

The utility model relates to an electromagnetic relay, concretely relates to take electromagnetic relay of auxiliary contact belongs to, belongs to electromagnetic relay technical field.

Background

The electromagnetic relay is a switch which utilizes an electromagnet to control the on-off of a working circuit, (1) the structure: the main parts of the electromagnetic relay are an electromagnet, an armature, a spring, a movable contact and a static contact, 2) the working circuit can be divided into a low-voltage control circuit and a high-voltage working circuit, and the low-voltage control circuit comprises an electromagnetic relay coil (electromagnet), a low-voltage power supply and a switch; closing a switch in the low-voltage control circuit, generating a magnetic field by current through a coil of an electromagnet so as to generate attraction on an armature, enabling a moving contact and a static contact to be in contact with E, closing a working circuit and enabling the motor to work; when the low-voltage switch is switched off, the current in the coil disappears, the armature makes and breaks the movable contact and the fixed contact under the action of the spring, the working circuit is disconnected, the motor stops working, and as long as a certain voltage is applied to the two ends of the coil, a certain current flows in the coil, so that an electromagnetic effect is generated, the armature overcomes the pulling force of the return spring and is attracted to the iron core under the attraction of the electromagnetic force, and the movable contact and the fixed contact (normally open contact) of the armature are attracted. When the coil is powered off, the electromagnetic attraction force disappears, and the armature returns to the original position under the counterforce of the spring, so that the movable contact and the original static contact (normally closed contact) are released. Thus, the circuit is attracted and released, thereby achieving the purposes of conduction and cut-off in the circuit. For the "normally open, normally closed" contacts of a relay, a distinction can be made: the static contact which is in an off state when the relay coil is not electrified is called as a normally open contact; the stationary contact in the on state is referred to as a "normally closed contact". In the electromagnetic relay in the prior art, if the electromagnetic magnet is subjected to large vibration, the position of a movable armature of the electromagnetic relay is easy to deviate, the position of a contact cannot be aligned and closed, and the error of the relay is improved; meanwhile, in the processing process, the static contact and the movable contact are easy to generate viscosity due to melting, and the static contact and the movable contact cannot be disconnected in the power failure. Therefore, further improvements are desired.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at overcoming the defect among the prior art, provide an electromagnetic relay of taking auxiliary contact, stability is strong, simple structure, improves the precision.

An electromagnetic relay with auxiliary contacts comprises a relay housing; a fixed armature component is arranged in the relay shell; a movable armature is arranged at the lower side of the fixed armature component, and a movable contact is arranged at the end part of the movable armature; a static contact is arranged at the end part of the fixed armature component; a coil rack is arranged at the lower side of the fixed armature component; an iron core is wrapped in the coil frame; one end of the movable armature is connected with the relay shell through a spring; the other end of the movable armature is provided with an auxiliary elastic sheet; and the auxiliary elastic sheet is provided with an auxiliary contact.

Preferably, a supporting frame is arranged in the relay shell; one end of the movable armature iron is inserted into the supporting frame; the supporting frame is provided with a main elastic sheet; the movable armature is provided with a limit strip hole relative to the main elastic sheet.

Preferably, the main elastic sheet is positioned at the edge of the support frame; the main elastic piece comprises a guide rod and main elastic pieces arranged on two sides of the guide rod.

Preferably, the guide rod is arranged in the limiting strip hole in a penetrating manner; the main elastic sheet is fixedly connected with the bottom of the movable armature; the end part of the movable armature is rotationally connected in the bearing frame through a positioning pin.

Preferably, one end of the movable armature close to the movable contact is provided with a wedge-shaped end face; the bottom of the auxiliary elastic sheet is provided with a matched end face relative to the wedge-shaped end face.

Preferably, one end of the auxiliary spring plate is hinged to the inner wall of the relay shell through a pin; the other end of the auxiliary elastic sheet is connected with a return spring.

The utility model discloses in, move armature's rotation route and pass through the guide arm and prescribe a limit to, can prevent effectively that the relay from after suffering the collision, moving armature's position and changing, lead to actuating, can not contact completely between the stationary contact. The accuracy of the relay is ensured. Meanwhile, when the magnetic attraction force borne by the broken electric armature of the iron core disappears, the auxiliary contact and the auxiliary elastic sheet can push the broken electric armature to be separated from the static contact together with the main elastic sheet, and the anti-adhesion capability of the movable armature is greatly improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic sectional view of the present invention.

In the figure, 1 is a relay shell, 2 is a fixed armature component, 3 is a movable armature, 3.1 is a limit strip hole, 4 is a movable contact, 5 is a fixed contact, 6 is a coil rack, 7 is an iron core, 8 is an auxiliary elastic sheet, 9 is an auxiliary contact, 10 is a supporting frame, 11 is a guide rod, 12 is a main elastic sheet, and 13 is a reset spring.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and obviously, the described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Terms used herein, including technical and scientific terms, have the same meaning as terms commonly understood by one of ordinary skill in the art, unless otherwise defined. It will be understood that terms defined in commonly used dictionaries have meanings that are consistent with their meanings in the prior art

Referring to fig. 1-2, an electromagnetic relay with auxiliary contacts includes a relay housing 1; a fixed armature component 2 is arranged in the relay shell 1; a movable armature 3 is arranged at the lower side of the fixed armature component 2, and a movable contact 4 is arranged at the end part of the movable armature 3; a static contact 5 is arranged at the end part of the fixed armature component 2; a coil rack 6 is arranged at the lower side of the fixed armature component 2; an iron core 7 is wrapped in the coil frame 6; one end of the movable armature 3 is connected with the relay shell 1; the other end of the movable armature 3 is provided with an auxiliary elastic sheet 8; and an auxiliary contact 9 is arranged on the auxiliary elastic sheet 8.

Furthermore, a support frame 10 is arranged in the relay housing 1; one end of the movable armature 3 is inserted into the supporting frame 10; the supporting frame 10 is provided with a main elastic sheet; the movable armature 3 is provided with a limit strip hole 3.1 relative to the main elastic sheet.

Specifically, in the present embodiment, the limiting strip hole 3.1 on the main elastic sheet is used for matching with the main elastic sheet, so as to ensure that the situation of axial deviation cannot occur under the condition that the movable armature 3 rotates under the elastic action.

Furthermore, the main elastic sheet is positioned at the edge of the supporting frame; the main elastic piece comprises a guide rod 11 and main elastic pieces 12 arranged on two sides of the guide rod.

Furthermore, the guide rod 11 is arranged in the limiting strip hole 3.1 in a penetrating manner; the main elastic sheet 12 is fixedly connected with the bottom of the movable armature 3; the end of the movable armature 3 is rotatably connected in the supporting frame through a positioning pin.

Specifically, in the present embodiment, the main elastic piece 12 is a compression spring, and in the power-off state, it will pull the moving armature 3 downward to separate it from the stationary contact; when the power is on, the iron core is electrified to generate magnetic force, and the magnetic force is larger than the elastic force of the main elastic sheet 12 and the auxiliary elastic sheet 8, so that the movable armature 3 is pushed upwards to be in contact with the static contact.

Furthermore, a wedge-shaped end face is arranged at one end of the movable armature 3 close to the movable contact; the bottom of the auxiliary elastic sheet 8 is provided with a matched end face relative to the wedge-shaped end face.

Furthermore, one end of the auxiliary spring plate 8 is hinged with the inner wall of the relay shell through a pin; the other end of the auxiliary elastic sheet 8 is connected with a return spring 13.

Specifically, in this embodiment, after the power failure, since the iron core no longer has magnetism, the movable armature 3 will be separated from the stationary contact due to the action of the main elastic piece, in this case, if the movable contact and the stationary contact are melted, and the movable armature cannot be separated by the action force of the main elastic piece alone, the auxiliary elastic piece will provide the acting force for mutual separation.

Finally, the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced with other equivalent solutions without departing from the spirit and scope of the present invention, which should be covered by the claims of the present invention.

Claims

1. An electromagnetic relay with auxiliary contacts comprises a relay housing; a fixed armature component is arranged in the relay shell; fixed armature subassembly downside be provided with move armature, its characterized in that: the end part of the movable armature is provided with a movable contact; a static contact is arranged at the end part of the fixed armature component; a coil rack is arranged at the lower side of the fixed armature component; an iron core is wrapped in the coil frame; one end of the movable armature is connected with the relay shell through a spring; the other end of the movable armature is provided with an auxiliary elastic sheet; and the auxiliary elastic sheet is provided with an auxiliary contact.

2. An electromagnetic relay with auxiliary contacts as claimed in claim 1, wherein: a supporting frame is arranged in the relay shell; one end of the movable armature iron is inserted into the supporting frame; the supporting frame is provided with a main elastic sheet; the movable armature is provided with a limit strip hole relative to the main elastic sheet.

3. An electromagnetic relay with auxiliary contacts according to claim 2, characterized in that: the main elastic sheet is positioned at the edge of the supporting frame; the main elastic piece comprises a guide rod and main elastic pieces arranged on two sides of the guide rod.

4. An electromagnetic relay with auxiliary contacts as claimed in claim 3, wherein: the guide rod penetrates through the limiting strip hole; the main elastic sheet is fixedly connected with the bottom of the movable armature; the end part of the movable armature is rotationally connected in the bearing frame through a positioning pin.

5. An electromagnetic relay with auxiliary contacts as claimed in claim 1, wherein: one end of the movable armature close to the movable contact is provided with a wedge-shaped end surface; the bottom of the auxiliary elastic sheet is provided with a matched end face relative to the wedge-shaped end face.

6. An electromagnetic relay with auxiliary contacts as claimed in claim 5, wherein: one end of the auxiliary elastic sheet is hinged with the inner wall of the relay shell through a pin; the other end of the auxiliary elastic sheet is connected with a return spring.