CN217847831U

CN217847831U - Relay contact structure

Info

Publication number: CN217847831U
Application number: CN202221432660.3U
Authority: CN
Inventors: 范彬; 曲敏; 杨超群; 黄加坤; 陈建武
Original assignee: Zhonghui Sensata Technology Wuhu Co ltd
Current assignee: Sensata Technology (Wuhu) Co.,Ltd.
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-11-18
Anticipated expiration: 2032-06-09

Abstract

The utility model relates to a relay contact structure, including main touch component, push rod subassembly, magnetic conduction piece and main spring, main touch component includes a plurality of stationary contacts and with at least two movable contact springs that stationary contact cooperation was used, each movable contact spring is connected with fixed subassembly respectively; the push rod assembly comprises an insulating sleeve, a fixing frame and a push rod which are integrally connected, one end, close to the fixing frame, of the magnetic conduction block is fixed by a movable spring of the fixing assembly, and a main spring is installed between one end, far away from the fixing frame, of the magnetic conduction block and the insulating sleeve. The utility model discloses an integrative injection moulding process will two movable contact springs of arranging side by side and first mounting integrated into one piece or with two movable contact springs side by side and second mounting rigid coupling, it not only can realize fixing each movable contact spring, still can improve the contact stability of movable contact spring and static contact.

Description

Relay contact structure

Technical Field

The utility model relates to a relay equipment technical field especially relates to relay contact structure.

Background

A relay is an electric control device that causes a controlled amount to change in a predetermined step in an electric output circuit when a change in an input amount meets a predetermined requirement. The relay has an interactive relation between a control system and a controlled system, is usually applied to an automatic control circuit, and actually is an 'automatic switch' for controlling the operation of a large current by using a small current, so that the relay plays roles of automatic adjustment, safety protection, circuit conversion and the like in the circuit.

At present, the short-circuit resistance current of a high-voltage direct-current relay exceeds a rated current level, and when the short-circuit current passes through a static contact, electric repulsion force generated between the static contact and the dynamic contact can cause the contact to be repelled, so that severe arcing is caused, and the relay is disabled. Therefore, it is urgently required to design a structure capable of effectively reducing the electric repulsive force of the relay.

Disclosure of Invention

In view of the above-described shortcomings of the prior art, it is an object of the present invention to provide a relay contact structure to solve one or more problems of the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the relay contact structure comprises a main contact assembly, a push rod assembly, a magnetic conduction block and a main spring, wherein the main contact assembly comprises a plurality of static contacts and at least two movable reeds matched with the static contacts for use, and each adjacent movable reed is connected with a fixed assembly; the push rod assembly comprises an insulating sleeve, a fixing frame and a push rod which are integrally connected, one end, close to the fixing frame, of the magnetic conduction block is fixed by a movable spring of the fixing assembly, and a main spring is installed between one end, far away from the fixing frame, of the magnetic conduction block and the insulating sleeve.

Furthermore, the fixing assembly comprises a first fixing piece, and each movable spring is connected with the first fixing piece to form an integrated structure.

Furthermore, the fixing assembly comprises at least one second fixing piece, and each movable reed is fixedly connected with the second fixing piece.

Furthermore, when the second fixing piece is single, the second fixing piece is fixedly connected with one surface of each movable spring leaf far away from the static contact.

Furthermore, when the second fixing piece is single, the second fixing piece is fixedly connected with one surface of the movable reed, which is close to the static contact.

Furthermore, when the second fixed part is a plurality of, the second fixed part respectively with the one side that the movable reed is close to the stationary contact and the one side rigid coupling of keeping away from the stationary contact.

Furthermore, the second fixing piece is provided with at least two second holes, and the position of each second hole corresponds to each movable spring.

Further, the movable spring plate comprises a first part and a second part respectively connected with two ends of the first part, and the second part is higher than the first part or lower than the first part.

Furthermore, one surface of the movable spring leaf close to the static contact is a plane.

Compared with the prior art, the beneficial technical effects of the utility model are as follows

The utility model discloses an integrative injection moulding process is with two movable contact spring and first mounting integrated into one piece of arranging side by side or with two movable contact spring and second mounting rigid couplings side by side, it not only can realize that each movable contact spring is fixed, the movable contact spring of arranging side by side simultaneously can also realize the electric current reposition of redundant personnel, the electric current that makes the movable contact spring flow through reduces to the half of former electric current, and the electronic repulsion between static contact and the movable contact spring can reduce to the half of former electronic repulsion, and then effectively reduce the electronic repulsion that the heavy current passes through the production, and the contact stability is improved.

Drawings

Fig. 1 shows a schematic structural diagram of a relay contact structure according to an embodiment of the present invention.

Fig. 2 shows a schematic structural diagram of the connection between the first fixing member and the movable contact spring in the contact structure of the relay contact according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram illustrating a connection between a first fixed member and a movable spring in another shape in a contact structure of a relay contact according to an embodiment of the present invention.

Fig. 4 shows a schematic diagram of a connection structure of the second fixing member and the movable spring at the first viewing angle in the contact structure of the second relay contact according to the embodiment of the present invention.

Fig. 5 is a schematic view illustrating a connection structure of the second fixing member and the movable spring at the second viewing angle in the contact structure of the second relay contact according to the embodiment of the present invention.

Fig. 6 shows a schematic structural diagram of a movable contact spring in a contact structure of a three-relay according to an embodiment of the present invention.

Fig. 7 shows a schematic structural diagram of a movable contact spring in a contact structure of a four-relay according to an embodiment of the present invention.

In the drawings, the reference numbers: 1. a stationary contact; 2. a movable reed; 200. a first part; 201. a second section; 3. a fixed mount; 4. a magnetic conduction block; 5. a main spring; 6. an insulating sleeve; 7. a yoke iron plate; 8. a push rod; 9. riveting; 10. a first fixing member; 11. a second fixing member; 1100. a second aperture.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following detailed description of the relay contact structure according to the present invention is made with reference to the accompanying drawings and the detailed description thereof. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. To make the objects, features and advantages of the present invention more comprehensible, please refer to the accompanying drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limitation of the implementation of the present invention, so that the present invention does not have the essential significance in the technology, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention.

The first embodiment is as follows:

referring to fig. 1, the relay contact structure includes a main contact assembly, a push rod assembly, a magnetic conduction block 4 and a main spring 5, where the main contact assembly includes a plurality of stationary contacts 1 and at least two movable contact springs 2 used in cooperation with the stationary contacts 1, in the relay contact structure of the first embodiment, the movable contact springs 2 are two, and the movable contact springs 2 are arranged side by side in a length direction and respectively connected to a fixing assembly. The push rod assembly comprises an insulating sleeve 6, a fixing frame 3 and a push rod 8 which are integrally connected, wherein the push rod 8 penetrates through a yoke iron plate 7, so that the insulating sleeve 6 is installed on the surface of the yoke iron plate 7, and the insulating sleeve 6 is supported through the yoke iron plate 7. One end of the magnetic conduction block 4 close to the fixing frame 3 fixes the movable spring leaf 2 with the fixing component, a main spring 5 is arranged between one end of the magnetic conduction block 4 far away from the fixing frame 3 and the insulating sleeve 6, and the main spring 5 tightly supports the magnetic conduction block 4 and the movable spring leaf 2 with the fixing component by releasing elastic acting force. The separation and contact between the movable reed 2 and the fixed contact 1 can be realized by the up-and-down movement of the push rod component.

The specific structure of the fixing assembly is described in detail below:

referring to fig. 1, 2 and 3, the fixing assembly includes a first fixing member 10, each movable spring plate 2 is arranged side by side, and then each movable spring plate 2 is connected with the first fixing member 10 to form an integrated structure, so that the electric repulsion generated when a large current passes through can be reduced by connecting the first fixing member 10 with the movable spring plate 2 to form the integrated structure, and the contact stability of the movable spring plate 2 and the stationary contact 1 is improved. Specifically, in the relay contact structure of the first embodiment, the parallel movable reeds 2 are placed into a mold together, a fluid plastic is injected into the mold, and after the injection molding is completed, the first fixing member 10 is formed on the outer sides of the movable reeds 2, so that the movable reeds 2 are fixedly connected into a whole.

Specifically, please refer to fig. 1, fig. 2 and fig. 3, the injection-molded first fixing element 10 is a plastic part, and in the first embodiment, the fixing element is a rectangular parallelepiped structure.

Of course, in other embodiments of the present invention, referring to fig. 4, the first fixing element 10 may be a curved shape other than a rectangular parallelepiped according to the difference of the injection mold, or may be any shape such as a circular shape, which only needs to be integrally connected with the movable contact spring 2, and therefore, the present invention is not limited thereto.

The specific structure of the movable spring plate 2 is described in detail below:

referring to fig. 2, the movable spring plate 2 includes a first portion 200 and a second portion 201 connected to two ends of the first portion 200, and the second portion 201 is disposed higher than the first portion 200. Between two adjacent movable spring pieces 2 of interconnect, the one side that is close to mount 3 and the one side of keeping away from mount 3 of the first portion 200 of every movable spring piece 2 all are located the same face, and is the same, and the one side that the second portion 201 of every movable spring piece 2 is close to stationary contact 1 and the one side of keeping away from stationary contact 1 all is located the same face.

Of course, referring to fig. 6, in another embodiment of the present invention, the second portion 201 of each movable spring piece 2 is lower than the first portion 200, referring to fig. 7, a surface of the movable spring piece 2 close to the stationary contact 1 may also be a plane, as long as it is ensured that the second portion 201 can contact or separate from the stationary contact 1, and similarly, the movable spring piece 2 may also reduce a part of the electric repulsive force.

Example two:

the second embodiment has the same structure as the first embodiment, except that the fixing component comprises at least one second fixing member 11, and each movable spring plate 2 is fixedly connected with the second fixing member 11. Referring to fig. 1, fig. 4 and fig. 5, the second fixing member 11 is provided with at least two second holes 1100, and in the relay contact structure of the second embodiment, the movable spring plate 2 is fixedly connected to the second fixing member 11 by a rivet 9 penetrating through the second holes 1100. When the second fixing piece 11 is single, the second fixing piece 11 is fixedly connected with one surface of each movable spring leaf 2 far away from the fixed contact 1, specifically, the surface far away from the fixed contact 1 is the bottom surface of each movable spring leaf 2,

correspondingly, in other embodiments of the present invention, when the second fixing member 11 is a single piece, the second fixing member 11 is fixedly connected to the surface 1 of each movable spring leaf 2 close to the stationary contact, specifically, the surface close to the stationary contact 1 is the top surface of each movable spring leaf 2.

Accordingly, in another embodiment of the present invention, when there are a plurality of second fixing members 11, for example, two second fixing members in this embodiment, one of the second fixing members 11 is fixed to a surface of the movable spring plate 2 close to the stationary contact 1, and the other second fixing member 11 is fixed to a surface of the movable spring plate 2 away from the stationary contact 1.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. Relay contact structure, its characterized in that: the relay contact structure comprises a main contact assembly, a push rod assembly, a magnetic conduction block and a main spring, wherein the main contact assembly comprises a plurality of static contacts and at least two movable reeds matched with the static contacts for use, and each adjacent movable reed is connected with a fixed assembly; the push rod assembly comprises an insulating sleeve, a fixing frame and a push rod which are integrally connected, one end, close to the fixing frame, of the magnetic conduction block is fixed by a movable spring of the fixing assembly, and a main spring is installed between one end, far away from the fixing frame, of the magnetic conduction block and the insulating sleeve.

2. The relay contact structure of claim 1, wherein: the fixing assembly comprises a first fixing piece, and each movable spring is connected with the first fixing piece to form an integrated structure.

3. The relay contact structure of claim 1, wherein: the fixing assembly comprises at least one second fixing piece, and each movable reed is fixedly connected with the second fixing piece.

4. The relay contact structure of claim 3, wherein: and when the second fixing piece is single, the second fixing piece is fixedly connected with one surface of each movable reed, which is far away from the static contact.

5. The relay contact structure of claim 3, wherein: when the second fixing piece is single, the second fixing piece is fixedly connected with one surface, close to the static contact, of the movable reed.

6. The relay contact structure of claim 3, wherein: when the second fixing piece is multiple, the second fixing piece is fixedly connected with one surface, close to the static contact, of the movable reed and one surface, far away from the static contact, of the movable reed respectively.

7. The relay contact structure of claim 3, wherein: the second fixing piece is provided with at least two second holes, and the position of each second hole corresponds to each movable spring.

8. The relay contact structure of claim 1, wherein: the movable reed comprises a first part and a second part which is respectively connected with two ends of the first part, and the second part is higher than the first part or lower than the first part.

9. The relay contact structure of claim 1, wherein: and one surface of the movable reed, which is close to the static contact, is a plane.