Contact system and relay
By designing the inclined part on the static reed and setting the static contacts, the parallel state of the dynamic contacts and static contacts are realized when they are disconnected and the horn-like structure when they are closed, the small gap between the dynamic contacts and static contacts in the relay is solved. The problem of difficulty in disconnecting from the arc improves voltage resistance and extends service life.
Patent Information
- Application Number
- CN202420036296.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-08
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-01-08
AI Technical Summary
The gap between the dynamic contacts and static contacts in existing relays is relatively small in the disconnected state, which affects their voltage resistance. It is difficult to quickly disconnect the arc when closed, resulting in the contacts being burnt and bonded.
The static reed is designed to have an inclined part, and the static contacts are arranged on the inclined part, so that the moving contacts and the static contacts are parallel when they are disconnected, increasing the gap; when closing, a horn is used that contacts one side and separates the other side. The pushing plate drives the reed to quickly break the arc.
It improves the voltage resistance of the relay, extends the service life of the contacts, and reduces the risk of bonding due to arc burning.
Smart Images
Figure CN222168275U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of relays, and in particular relates to a contact system and a relay. Background Art
[0002] Relays are generally equipped with a driving mechanism, a moving contact assembly and a static contact assembly. The driving mechanism drives the moving contact assembly and the static contact assembly to close or open, thereby changing the state of the relay. However, in existing products, the moving contact and the static contact in the moving and static contact assemblies are parallel in the closed state, and slowly appear in a horn state when disconnected, making the gap between the contacts smaller in the disconnected state, affecting the withstand voltage between the contacts.
[0003] Therefore, it is urgent to propose a contact system and a relay to solve the above technical problems. Utility Model Content
[0004] The utility model discloses a contact system and a relay, which can effectively solve at least one technical problem involved in the background technology.
[0005] To achieve the above purpose, the technical solution of the utility model is:
[0006] A contact system comprises a static contact assembly and a moving contact assembly, wherein the static contact assembly comprises a static spring sheet and a static contact arranged on the static spring sheet, and the moving contact assembly comprises a dynamic spring lead-out sheet, a dynamic spring sheet with one end fixedly mounted on the dynamic spring lead-out sheet, and a dynamic contact located on the dynamic spring sheet and opposite to and matched with the static contact, wherein the static spring sheet comprises a horizontal portion and an inclined portion extending from one end of the horizontal portion and arranged obliquely so that the moving contact and the static contact are in a parallel state after disconnection, and the static contact is located on the inclined portion.
[0007] As a preferred improvement of the present invention, the other end of the movable spring piece is suspended, and the movable contact is located at one end of the movable spring piece.
[0008] As a preferred improvement of the present invention, the contact system further comprises a pushing piece for pushing the moving reed piece to move so as to drive the moving contact and the static contact to close or open.
[0009] As a preferred improvement of the utility model, the movable contact and the static contact, after being closed, form a trumpet-shaped structure with one side in contact and the other side separated.
[0010] As a preferred improvement of the present invention, the static contact is fixed to the static spring piece by riveting, and the dynamic contact is fixed to the dynamic spring piece by riveting.
[0011] As a preferred improvement of the present invention, two static contacts are arranged on the inclined portion in parallel and at intervals, and the dynamic spring piece is provided with two dynamic contacts corresponding to the two static contacts.
[0012] The present application also provides a relay, which includes the contact system.
[0013] The beneficial effects of the utility model are as follows:
[0014] The utility model designs an inclined portion with a certain inclination angle for the static reed piece and arranges the static contact on the inclined portion, so that when the moving contact and the static contact are disconnected, the two contacts are approximately parallel, the gap between the contacts is optimized and relatively increased, and the voltage resistance performance of the relay is improved; when the moving contact and the static contact are closed, a horn structure with one side in contact and the other side separated is presented, and at the moment of disconnection, the arc is more easily disconnected in a short time, reducing the risk of the contacts sticking due to arc burning. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:
[0016] Figure 1 This is a schematic diagram of the structure of a contact system of the utility model in a closed state;
[0017] Figure 2 This is a schematic diagram of the structure of a contact system of the utility model in a disconnected state;
[0018] Figure 3 It is a structural schematic diagram of the static contact assembly of the utility model;
[0019] Figure 4 It is a structural schematic diagram of the movable contact assembly of the utility model;
[0020] Figure 5 It is a structural schematic diagram of the static spring piece of the utility model;
[0021] Figure 6 The utility model is a structural schematic diagram of a relay.
[0022] In the figure: 1, static contact assembly; 11, static reed; 111, horizontal part; 112, inclined part; 12, static contact; 2, moving contact assembly; 21, moving spring lead-out piece; 22, moving reed; 23, moving contact; 3, push piece; 100, contact system; 200, relay. DETAILED DESCRIPTION
[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0025] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0026] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0027] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0028] See also Figures 1 to 5 As shown, the utility model provides a contact system 100, including a static contact assembly 1 and a moving contact assembly 2, wherein the static contact assembly 1 includes a static spring sheet 11 and a static contact 12 arranged on the static spring sheet 11, and the moving contact assembly 2 includes a dynamic spring lead-out sheet 21, a dynamic spring sheet 22 fixedly mounted on the dynamic spring lead-out sheet 21, and a dynamic contact 23 located on the dynamic spring sheet 22 and corresponding to the static contact 12.
[0029] The static spring piece 11 includes a horizontal portion 111 and an inclined portion 112 extending from one end of the horizontal portion 111 and arranged obliquely, and the static contact 12 is riveted and fixed on the inclined portion 112 .
[0030] One end of the movable spring piece 22 is fixed to the movable spring lead-out piece 21 , and the other end is suspended and located below the static spring piece 11 . The movable contact 23 is riveted and fixed to the suspended end of the movable spring piece 22 and is arranged opposite to the static contact 12 .
[0031] The contact system further comprises a push piece 3 for pushing the moving reed piece 22 to move so as to drive the moving contact 23 and the stationary contact 12 to close or open.
[0032] Specifically, when the push piece 3 pushes the moving reed piece 22 to make the contact in a closed state, since the static reed piece 11 is designed with a certain inclination angle, that is, the existence of the inclination portion 112, the moving contact 23 and the static contact 12 are not completely in contact, but present a trumpet-shaped structure with one side in contact and the other side separated. This makes it easier for the arc to be disconnected at the moment of disconnection of the relay, reducing the risk of contact adhesion due to arcing and burning.
[0033] When the push piece 3 pushes the movable spring piece 22 to make the contact in the disconnected state, the movable contact 23 and the static contact 12 are approximately in a parallel state, the gap between the contacts is optimized and relatively increased, and the pressure resistance performance is improved. Preferably, the inclination angle of the inclined portion 112 should be designed to be consistent with the inclination angle of the movable contact 23 after the push piece 3 pushes the contact to disconnect.
[0034] Preferably, two static contacts 12 are arranged in parallel and at intervals on the inclined portion 112 , and two dynamic contacts 23 are arranged on the dynamic reed piece 22 corresponding to the two static contacts 12 .
[0035] like Figure 6 As shown, the present application further provides a relay 200 , which includes the contact system 100 .
[0036] The beneficial effects of the utility model are as follows:
[0037] The utility model designs an inclined portion with a certain inclination angle for the static reed piece and arranges the static contact on the inclined portion, so that when the moving contact and the static contact are disconnected, the two contacts are approximately parallel, the gap between the contacts is optimized and relatively increased, and the voltage resistance performance of the relay is improved; when the moving contact and the static contact are closed, a horn structure with one side in contact and the other side separated is presented, and at the moment of disconnection, the arc is more easily disconnected in a short time, reducing the risk of the contacts sticking due to arc burning.
[0038] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and the implementation scheme. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.
Claims
1. A contact system, characterized in that: The invention comprises a static contact assembly and a moving contact assembly, wherein the static contact assembly comprises a static spring sheet and a static contact arranged on the static spring sheet, and the moving contact assembly comprises a moving spring lead-out sheet, a moving spring sheet with one end fixedly mounted on the moving spring lead-out sheet, and a moving contact located on the moving spring sheet and opposite to and matched with the static contact, wherein the static spring sheet comprises a horizontal portion and an inclined portion extending from one end of the horizontal portion and inclinedly arranged so that the moving contact and the static contact are in a parallel state after disconnection, and the static contact is located on the inclined portion.
2. A contact system according to claim 1, characterized in that: The other end of the moving reed is suspended, and the moving contact is located at one end of the suspended moving reed.
3. A contact system according to claim 1, characterized in that: The contact system also includes a pushing piece for pushing the moving reed piece to move so as to drive the moving contact and the stationary contact to close or open.
4. A contact system according to claim 1, characterized in that: After the moving contact and the static contact are closed, they form a trumpet-shaped structure with one side in contact and the other side separated.
5. A contact system according to claim 1, characterized in that: The stationary contact is fixed to the stationary spring piece by riveting, and the moving contact is fixed to the moving spring piece by riveting.
6. A contact system according to claim 1, characterized in that: The inclined portion is provided with two stationary contacts in parallel and at intervals, and the moving spring piece is provided with two moving contacts corresponding to the two stationary contacts.
7. A relay, characterized in that: Comprising a contact system as described in any one of claims 1-6.