Anti-adhesion forced separation type relay
By designing two electromagnets in the relay to generate equal suction force, the problem that the relay cannot disconnect normally due to contact sticking, achieving higher service life and reliability.
Patent Information
- Application Number
- CN202421531324.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The circuit cannot be disconnected normally due to contact sticking of existing relays, which may cause equipment failure or safety accidents.
A forced separation relay for anti-adhesion is designed, and two electromagnets are used to be located on both sides of the armature. When the coil of the first electromagnet is energized, the armature attracts the armature to contact the static contact. After the coil of the second electromagnet is energized, the same suction force as the first electromagnet is generated to ensure that the dynamic contact and the static contact are separated.
Effectively prevent the continuous adhesion between dynamic contacts and static contacts, reduce the occurrence of contact adhesion, and improve the service life and reliability of the relay.
Smart Images
Figure CN222927384U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of relays, and particularly relates to an anti - adhesion forced separation type relay. Background Art
[0002] As a key component in an electrical control system, a relay is widely used in various devices and systems. Most of the existing relays are disconnected manually or with a simple control logic. However, during actual use, due to reasons such as contact surface contamination, wear, or circuit anomalies, the relay contacts may stick, resulting in the circuit being unable to be disconnected normally, which can easily lead to equipment failures or safety accidents. Summary of the Utility Model
[0003] The purpose of the utility model is to provide an anti - adhesion forced separation type relay to solve the technical problem that the existing relay cannot disconnect the circuit normally due to the sticking phenomenon.
[0004] To solve the above - mentioned technical problem, the utility model provides an anti - adhesion forced separation type relay, including:
[0005] A static contact for connecting with a load;
[0006] An armature, with a moving contact cooperating with the static contact provided at one end thereof;
[0007] A first electromagnet provided on the side of the armature facing the static contact, and the coil of the first electromagnet attracts the armature when energized to make the moving contact contact the static contact; and
[0008] A second electromagnet provided on the other side of the armature, and one end of the coil of the second electromagnet is connected to the moving contact and the other end is electrically connected to the static contact; wherein
[0009] When the moving contact contacts the static contact, the coil of the second electromagnet is energized and generates a suction force on the armature that is the same size as that of the first electromagnet.
[0010] In an embodiment of the present application, the first electromagnet and the second electromagnet have the same specifications; and
[0011] The current in the circuit where the first electromagnet is located is the same as the current in the circuit where the second electromagnet is located.
[0012] In an embodiment of the present application, a first indicator light is connected in series with the coil of the first electromagnet.
[0013] In an embodiment of the present application, a second indicator light is connected in series with the coil of the second electromagnet.
[0014] The beneficial effects of the present utility model are as follows. The anti-adhesion forced separation type relay of the present utility model includes a first electromagnet and a second electromagnet, which are respectively located on both sides of the armature. When the coil of the first electromagnet is energized, it attracts the armature to make the moving contact contact the static contact. At this time, the coil of the second electromagnet is energized and generates a suction force on the armature that is the same size as that of the first electromagnet. When the circuit where the first electromagnet is located is powered off, if the moving contact and the static contact are adhered, the second electromagnet still continuously generates a suction force on the armature, and this suction force can separate the moving contact and the static contact, thereby preventing the continuous adhesion of the moving contact and the static contact, effectively reducing the occurrence of contact adhesion, and improving the service life and reliability of the relay.
[0015] Other features and advantages of the present utility model will be described in the subsequent description, and, in part, will become apparent from the description or will be understood by implementing the present utility model. The objectives and other advantages of the present utility model are achieved and obtained by the structures specifically pointed out in the description and the drawings.
[0016] To make the above objectives, features, and advantages of the present utility model more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. Description of the Drawings
[0017] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0018] Figure 1 is a schematic diagram of a relay in the prior art;
[0019] Figure 2 is a schematic diagram of a preferred embodiment of the anti-adhesion forced separation type relay of the present utility model.
[0020] In the figure:
[0021] Static contact 1, armature 2, moving contact 3, first electromagnet 4, first indicator light 41, second electromagnet 5, second indicator light 51. Detailed Embodiments
[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0023] Referring to Figure 1 , in the prior art, after the electromagnet is energized, it generates a downward pulling force F1 on the moving contact, causing it to move downward. At the same time, the spring also generates an upward force F2 on the moving contact. At this time, F2 < F1, so that the moving contact can be pulled to close with the static contact, realizing the connection of the circuit. After the electromagnet loses power, F1 disappears, and the moving contact is pulled upward by the force F2 generated by the spring, causing the moving contact to be pulled away from the static contact, realizing the disconnection of the circuit. However, due to oxidation, loosening, poor contact of the contacts, and excessive circuit load, the static contact and the moving contact are adhered, and since the upward force F2 generated by the spring is small, the static contact and the moving contact cannot be forcibly separated.
[0024] Based on this, an embodiment of the present utility model provides an anti-adhesion forced separation type relay. Referring to Figure 2 , the anti-adhesion forced separation type relay includes: a static contact 1 for connecting with a load; an armature 2, with a moving contact 3 cooperating with the static contact 1 provided at one end; a first electromagnet 4 provided on the side of the armature 2 facing the static contact 1, and the coil of the first electromagnet 4 attracts the armature 2 when energized to make the moving contact 3 contact the static contact 1; and a second electromagnet 5 provided on the other side of the armature 2, and one end of the coil of the second electromagnet 5 is connected to the moving contact 3, and the other end is electrically connected to the static contact 1; wherein when the moving contact 3 contacts the static contact 1, the coil of the second electromagnet 5 is energized and generates a suction force on the armature 2 that is the same size as that of the first electromagnet 4.
[0025] Specifically, when the circuit where the first electromagnet 4 is located is energized, the coil of the first electromagnet 4 is energized, thereby generating a downward pulling force F1 on the moving contact 3, causing the moving contact 3 to contact the static contact 1; at this time, the circuit where the second electromagnet 5 is located is closed and energized, the coil of the second electromagnet 5 is energized, generating an upward pulling force F3 on the moving contact 3, and F1 = F3, the moving contact 3 and the static contact 1 still overlap, and the circuit where the load is located remains energized; when the circuit where the first electromagnet 4 is located is disconnected, F1 disappears, and at this time the pulling force F3 can reset the moving contact 3, thereby disconnecting the load circuit; and when the moving contact 3 and the static contact 1 are adhered, the pulling force F3 can also forcibly separate the moving contact 3 and the static contact 1.
[0026] In this embodiment, to ensure that F1 = F3, the first electromagnet 4 and the second electromagnet 5 have the same specifications, for example, the coil, the thickness of the iron core, the material, and the number of turns are the same; and the current in the circuit where the first electromagnet 4 is located is the same as the current in the circuit where the second electromagnet 5 is located, that is, the current flowing through the coil of the first electromagnet 4 and the current flowing through the coil of the second electromagnet 5 are equal in magnitude.
[0027] In this embodiment, it can be understood that the circuit where the first electromagnet 4 is located has a power source and a switch, etc.; the circuit where the second electromagnet 5 is located also has a power source, and the moving contact 3 and the static contact 1 act as the switch of this circuit.
[0028] In this embodiment, preferably, a first indicator light 41 is connected in series with the coil of the first electromagnet 4; a second indicator light 51 is connected in series with the coil of the second electromagnet 5.
[0029] In an application scenario, the indicator lights can facilitate the judgment of whether the relay is stuck. Specifically, when the first indicator light 41 in the circuit where the first electromagnet 4 is located goes out, while the second indicator light 51 in the circuit where the second electromagnet 5 is located is constantly on, at this time, the F3 generated by the second electromagnet 5 can no longer pull the moving contact, indicating that the adhesion is already quite serious at this time, and the relay needs to be replaced at this time.
[0030] In summary, the advantage of the anti-sticking forced separation type relay of the present utility model is that the original relatively small F2 is changed to a larger F3, so that the moving and static contacts are pulled apart by a greater force, reducing the probability of adhesion between the static contact and the moving contact. In addition, compared with the original relay that cannot judge whether the relay is stuck, the added indicator lights can remind the personnel that the relay has adhered and the relay needs to be replaced.
[0031] Each device (components whose specific structures are not described) selected in this application is a general standard component or a component known to those skilled in the art, and its structure and principle can be known to those skilled in the art through technical manuals or obtained through conventional experimental methods.
[0032] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it 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, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0033] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.
[0034] Taking the above-mentioned ideal embodiment of the present utility model as an inspiration, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. An anti-adhesion forced separation type relay, characterized in that: include: A stationary contact (1), used for connecting to a load; An armature (2) having one end provided with a movable contact (3) cooperating with the static contact (1); A first electromagnet (4) is arranged on a side of the armature (2) facing the stationary contact (1), and when energized, the coil of the first electromagnet (4) attracts the armature (2) to make the movable contact (3) contact the stationary contact (1); and The second electromagnet (5) is arranged on the other side of the armature (2), and one end of the coil of the second electromagnet (5) is connected to the moving contact (3), and the other end is electrically connected to the stationary contact (1); wherein When the movable contact (3) contacts the stationary contact (1), the coil of the second electromagnet (5) is energized and generates a suction force on the armature (2) of the same magnitude as that of the first electromagnet (4).
2. The anti-adhesion forced separation relay according to claim 1, characterized in that: The first electromagnet (4) and the second electromagnet (5) have the same specifications; and The current in the circuit where the first electromagnet (4) is located is the same as the current in the circuit where the second electromagnet (5) is located.
3. The anti-adhesion forced separation relay according to claim 1, characterized in that: The coil of the first electromagnet (4) is connected in series with a first indicator light (41).
4. The anti-adhesion forced separation relay according to claim 1, characterized in that: The coil of the second electromagnet (5) is connected in series with a second indicator light (51).