Dual-control magnetic latching relay
By introducing a push card and boss structure into the magnetic latching relay, the problem of being unable to manually disconnect when the electromagnetic relay contacts stick together is solved, realizing safe and simple circuit control and meeting the safe disconnection requirements of the power system.
Patent Information
- Application Number
- CN202520137570.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Existing electromagnetic relays cannot be manually disconnected when the contacts stick together, posing a safety hazard and being complex to operate, thus failing to meet the safe disconnection requirements of power systems.
A dual-control magnetic latching relay was designed, which adopts a push card and boss structure. By manually pushing the boss, the push card is moved, so that the first contact and the second contact are separated or made into contact, thereby realizing manual circuit disconnection. The boss design improves the identification and security.
This technology enables manual circuit disconnection when contacts stick together, improving safety and ease of operation, enhancing relay status identification, and avoiding safety hazards caused by sticking.
Smart Images
Figure CN223898227U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of relay technology, specifically a dual-control magnetic latching relay. Background Technology
[0002] Relays are used in some power systems and safety scenarios. In addition to breaking circuits, they often need to have alarm indication and automatic reset functions. This is because the contacts of a relay may stick together as it is used, which can lead to safety hazards and accidents.
[0003] Conventional electromagnetic relays rely on electronic control to open and close circuits. However, once the contacts stick together, the relay often cannot reset, and the circuit remains in a continuously connected state. In this case, the relay needs to be destroyed or removed to disconnect the circuit, which is not only complicated to operate but also poses certain safety hazards and does not meet the requirements for safe disconnection of the power system. Therefore, a relay that can monitor whether sticking occurs and can be manually disconnected when sticking occurs is needed. Utility Model Content
[0004] The purpose of this invention is to overcome the shortcomings of existing technologies that cannot be manually disconnected, and to provide a magnetic latching relay with dual control.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-control magnetic latching relay, comprising a base, a first contact piece and a second contact piece fixedly connected to the left side of the base, a push card slidably connected to the top of the base and connected to the second contact piece, a housing sleeve on the outer side of the base, a groove opened on the top of the base, the push card located in the groove, a boss provided on the top of the push card, a slot opened on the top of the housing, and the boss extending outward through the slot.
[0006] The aforementioned boss has a trapezoidal structure that is narrower at the top and wider at the bottom, and the push card and the boss are an integrated structure made of plastic.
[0007] The aforementioned boss has a protruding length of 4.1 mm perpendicular to the push card, and a boss thickness of 1.5 mm.
[0008] As mentioned above, the outer edges and corners of the boss, as well as the edges at the connection between the root of the boss and the push card, are all rounded.
[0009] As described above, a slot is provided on the push card near the left side, and the top of the second contact piece passes through the slot and is bent in an L-shape.
[0010] Compared with existing technologies, this dual-control magnetic latching relay has the following advantages:
[0011] I. This utility model provides a protrusion structure on the push card and a slot is opened on the outer shell to extend the protrusion. This allows the push card to be moved by manually pushing the protrusion, so that the first contact piece and the second contact piece can be manually separated without damaging or disassembling the relay, thus realizing the manual operation function.
[0012] Second, the protrusion structure of this utility model improves the recognizability of the relay status. The position of the protrusion can be used to visually identify whether the relay is stuck. It can also be used as a limit switch to indicate the working status signal of the relay.
[0013] Third, the boss structure of this utility model is small and will not affect the overall installation space of the relay. At the same time, it is easy to pinch and flick with your fingers. It is narrow at the top and wide at the bottom, and the corners are all rounded, which improves the strength of the boss and avoids sharp edges from scratching your fingers.
[0014] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the external structure of this utility model;
[0016] Figure 2 This is a three-dimensional structural diagram of the present invention;
[0017] Figure 3 This is a schematic diagram of the push card and boss structure of this utility model;
[0018] Figure 4 This is a schematic diagram of the push card and the second contact piece of this utility model.
[0019] In the diagram: 1. Base; 2. Outer shell; 3. First contact piece; 4. Second contact piece; 5. Push card; 6. Boss. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] like Figure 1-4As shown, this utility model provides a dual-control magnetic latching relay technical solution: a dual-control magnetic latching relay includes a base 1, a first contact 3 and a second contact 4 fixedly connected to the left side of the base 1, a push card 5 slidably connected to the top of the base 1 and connected to the second contact 4, a shell 2 sleeved on the outside of the base 1, a sliding groove opened on the top of the base 1, the push card 5 is located in the sliding groove, a boss 6 is provided on the top of the push card 5, a slot is opened on the top of the shell 2, and the boss 6 extends outward through the slot.
[0022] According to the overall structure of the device, during use, the circuit is connected by the contact between the first contact 3 and the second contact 4. When the first contact 3 and the second contact 4 stick together, the pusher 6 is pushed to move the pusher 5, which in turn moves the second contact 4, causing the second contact 4 to separate from the first contact 3, thereby disconnecting the circuit. When connecting the circuit, the pusher 6 can also be manually pushed to move the pusher 5 to make the second contact 4 contact the first contact 3, thereby connecting the circuit.
[0023] like Figure 3 As shown, the boss 6 is a trapezoidal structure that is narrower at the top and wider at the bottom. The push card 5 and the boss 6 are an integrated structure and are made of plastic. The protruding length of the boss 6 perpendicular to the push card 5 is 4.1mm, the thickness of the boss 6 is 1.5mm, and the outer edge and corner of the boss 6, as well as the edge of the connection between the root of the boss 6 and the push card 5, are all rounded.
[0024] The connection between the boss 6 and the push card 5 is strengthened by the top-narrow-bottom-wide structure and integrated connection. The use of plastic material provides insulation to prevent electric shock during manual operation. The size of the boss 6 is based on the size of a finger, so it is neither too large to affect the installation space of the relay, nor too small to make it difficult to pinch and pull. At the same time, the rounded corners at the base improve the connection strength between the boss 6 and the push card 5 and prevent the boss 6 from breaking apart. The rounded corners of the boss 6 make the outer side of the boss 6 smooth, avoiding the generation of burrs and preventing employees from scratching their fingers when using it.
[0025] like Figure 4 As shown, a slot is provided on the push card 5 near the left side, and the top of the second contact piece 4 passes through the slot and is bent in an L-shape.
[0026] By pushing the card slot on the card 5 and the L-shaped bend at the top of the second contact 4 to engage with each other, the card 5 is prevented from separating from the second contact 4 during repeated pushing and pulling during long-term use, thus ensuring a stable connection between the card 5 and the second contact 4.
[0027] Working principle: During use, the circuit is connected through the contact between the first contact 3 and the second contact 4. When the first contact 3 and the second contact 4 stick together, the pusher 6 moves the pusher 5, which in turn moves the second contact 4, separating it from the first contact 3 and thus disconnecting the circuit. When connecting the circuit, the pusher 6 can also be manually pushed to move the pusher 5 to make the second contact 4 contact the first contact 3, thereby connecting the circuit.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A dual-control magnetic latching relay, comprising a base (1), wherein a first contact piece (3) and a second contact piece (4) are fixedly connected to the left side of the base (1), and a push card (5) is slidably connected to the top of the base (1), and the push card (5) is connected to the second contact piece (4); a shell (2) is sleeved on the outside of the base (1), characterized in that: The base (1) has a groove on its top, the push card (5) is located in the groove, the push card (5) has a boss (6) on its top, the outer shell (2) has a slot on its top, and the boss (6) extends outward through the slot.
2. The magnetic latching relay with dual control according to claim 1, characterized in that: The boss (6) is a trapezoidal structure that is narrow at the top and wide at the bottom, and the push card (5) and the boss (6) are an integrated structure and are made of plastic.
3. The magnetic latching relay with dual control according to claim 1, characterized in that: The protrusion length of the boss (6) perpendicular to the push card (5) is 4.1 mm, and the thickness of the boss (6) is 1.5 mm.
4. A dual-control magnetic latching relay according to claim 1, characterized in that: The outer edge and corner of the boss (6), as well as the edge of the connection between the root of the boss (6) and the push card (5), are all rounded.
5. A magnetic latching relay with dual control according to claim 1, characterized in that: The push card (5) has a slot near the left side, and the top of the second contact piece (4) passes through the slot and is bent in an L-shape.