Relay on-off structure

Abstract

The invention relates to the technical field of relays, in particular to a relay on-off structure. Comprising a base, one side of the base is fixedly provided with a magnetic circuit part, and the other side of the base is provided with two symmetrically distributed coil soldering lugs and two symmetrically distributed load pins; the coil soldering lugs and the load pins are located at the corners of the base. The end parts of the two coil soldering lugs penetrate through the base and are connected with two ends of the coil of the magnetic circuit part; the end part of the load pin penetrates through the base and is provided with a static reed; the supporting block of the magnetic circuit part is provided with two movable reeds corresponding to the static reeds in position, and the two movable reeds are connected through a flexible conductor. According to the invention, because the distance between the two load pins is large, the L-shaped terminals on the two load pins do not have the phenomenon of ''fighting'', so that a customer can conveniently arrange lines, the problem of virtual insertion between the L-shaped terminals and the load pins can be solved, and the risk of relay burnout caused by contact failure is reduced.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and specifically to a relay switching structure. Background Technology

[0002] A relay is an electronic control device, commonly used in automatic control circuits. It is an "automatic switch" that uses a small current and low voltage to control a larger current and higher voltage, playing roles such as automatic adjustment, safety protection, and circuit switching in circuits.

[0003] When a voltage is applied across the coil of a traditional electromagnetic relay, current flows through the coil winding. This creates an electromagnetic effect between the core and the coil. Under the attraction of the electromagnetic field, the armature overcomes the spring's reaction force and moves towards the core. At this point, the moving contact of the moving spring contacts the stationary contact of the stationary spring, thus completing the output circuit. When the voltage across the coil is removed, the electromagnetic attraction disappears, and the armature is pulled back to its released position by the spring's reaction force. Simultaneously, the moving and stationary contacts disconnect, and the output circuit is broken. Traditional electromagnetic relays achieve the function of connecting or disconnecting the load circuit through the engagement or disengagement of the moving and stationary contacts.

[0004] like Figure 1 , Figure 2 and Figure 3 As shown, the existing relay consists of a base 01, a support block, a tension spring, and a magnetic circuit. The base 01 has coil solder pads 02 installed in holes 5 and 6, and load pins 03 installed in holes 2 and 3. The load pins 03 are relatively close to the coil solder pads 02. The load current enters through one load pin 03. The magnetic circuit attracts the moving spring 04 and the stationary spring 05. In the attracted state, the current flows from the stationary contact to the moving contact of the moving spring 04, and then through the other moving contact, the current flows into the stationary spring 05 of the other load pin 03, thus forming a load circuit.

[0005] When the load power used by the client is large, thick wires will be used. If the L-shaped terminals 06 of the two thick wires are inserted into the load pin 03 in the same direction, there will be interference. If they are inserted into the load pin 03 in opposite directions, the wires will be subjected to bending stress. The pulling during the wire handling process may cause the root of the L-shaped terminal 06 spring to open and deform, resulting in a loose insertion. This may cause arcing due to poor contact. Summary of the Invention

[0006] The purpose of this invention is to solve the technical problem that the distance between the load terminal pins is too close, making it difficult to organize the wires during use, resulting in poor insertion, poor contact, or even relay burnout. The invention provides a relay switching structure.

[0007] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: A relay switching structure includes a base, a magnetic circuit part fixedly mounted on one side of the base, and two symmetrically distributed coil solder pieces and two symmetrically distributed load pins on the other side of the base. The coil solder pads and load pins are both located at the corners of the base; The ends of the two coil solder pads pass through the base and are connected to the two ends of the coil in the magnetic circuit section; The end of the load pin passes through the base and is provided with a stationary spring. The magnetic circuit section has two movable springs on the support block, which correspond to the positions of the stationary springs. The two movable springs are connected by a flexible conductor.

[0008] Furthermore, the stationary reed is provided with a stationary contact point; The moving reed is provided with a first moving contact corresponding to the stationary contact, and a second moving contact connected to the flexible conductor.

[0009] Furthermore, the flexible conductor is a soft copper wire, and the two ends of the soft copper wire are respectively welded to the second moving contacts of the two moving springs.

[0010] Furthermore, the base is provided with multiple stops located between the load pins.

[0011] Furthermore, the magnetic circuit portion includes the support block, the L-shaped yoke, the iron core, and the coil frame with the coil. The two ends of the coil are respectively connected to two coil solder pieces; The L-shaped yoke includes a first yoke and a second yoke connected together. The coil frame is fixedly installed on the first yoke, the iron core passes through the through hole of the coil frame and is connected to the first yoke, and the support block is rotatably installed on the side of the second yoke away from the first yoke. The side of the support block is provided with a first hook, the side of the first yoke near the second yoke is provided with a second hook, and an elastic element is provided between the first hook and the second hook.

[0012] Furthermore, grooves are provided on both sides of the support block, and protrusions that match the grooves are provided on the second yoke. The support block is mounted on the protrusion of the second yoke via a groove.

[0013] Furthermore, the elastic element is a tension spring, and the hooks at both ends of the tension spring are respectively attached to the first hook and the second hook.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The relay switching structure provided by this invention adjusts the position of the two load pins on the base, that is, the two load pins are symmetrically arranged at the two corners of the base. In use, the L-shaped terminal wires can be inserted into the load pins in the same direction. Since the distance between the two load pins is large, the L-shaped terminals on the two load pins will not "interfere", which makes it convenient for customers to organize the circuit. Moreover, it can solve the problem of loose insertion between the L-shaped terminals and the load pins, reducing the risk of relay burnout due to poor contact. At the same time, without increasing the internal space of the relay, two sets of moving springs connected by flexible conductors form a load circuit with the two stationary springs, which makes it easy to ensure that the two moving springs and the two stationary springs engage synchronously. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of two L-shaped terminals mounted in the same direction on a load pin in the prior art. Figure 2 This is a schematic diagram of two L-shaped terminals mounted in reverse on the load pin in the prior art; Figure 3 This is a schematic diagram of an explosion using existing technology; Explanation of reference numerals in the attached diagram: 01-base, 02-coil solder pad, 03-load pin, 04-moving spring, 05-stationary spring, 06-L-type terminal.

[0016] Figure 4 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 5 This is a schematic diagram of the exploded structure according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the magnetic circuit, moving spring, and flexible conductor in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached drawings: 1-Base, 2-Magnetic circuit part, 21-Coil, 22-Support block, 221-Groove, 23-L-shaped yoke, 231-First yoke, 232-Second yoke, 2321-Protrusion, 24-Coil frame, 25-First hook, 26-Second hook, 27-Elastic element, 3-Coil solder piece, 4-Load pin, 5-Stationary spring, 51-Stationary contact, 6-Moving spring, 61-First moving contact, 62-Second moving contact, 7-Flexible conductor, 8-Stop block. Detailed Implementation

[0018] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 4 As shown, a relay switching structure includes a base 1, a magnetic circuit part 2 fixedly installed on one side of the base 1, and two symmetrically distributed coil 21 solder pieces and two symmetrically distributed load pins 4 on the other side of the base 1. The coil 21 solder pad and the load pin 4 are both located at the corners of the base 1; In this embodiment, two symmetrically distributed load pins 4 are set at the edge of the base 1, that is, the two load pins 4 are set in the holes 1 and 4 of the base 1, increasing the distance between the two load pins 4, which makes it easier to connect the L-shaped terminals of the wires to the load pins 4 in the same direction during use. Since the distance between the two load pins 4 is large, the L-shaped terminals on the two load pins 4 will not "interfere", making it convenient for customers to organize the lines.

[0020] The ends of the two coil 21 solder pieces pass through the base 1 and are connected to the two ends of the coil 21 in the magnetic circuit section 2; like Figure 5 As shown, the end of the load pin 4 passes through the base 1 and is provided with a stationary spring 5; as Figure 6 As shown, due to the increased spacing between the two load pins 4, in order to form a loop between the two load pins 4, the support block 22 of the magnetic circuit part 2 is provided with two moving springs 6 corresponding to the positions of the stationary springs 5, and the two moving springs 6 are connected by a flexible conductor 7.

[0021] like Figure 5 As shown, the stationary reed 5 has a stationary contact 51; the movable reed 6 has a first movable contact 61 corresponding to the stationary contact 51, and a second movable contact 62 connected to the flexible conductor 7.

[0022] like Figure 5 As shown, the flexible conductor 7 is a soft copper wire, and the two ends of the soft copper wire are respectively welded to the second moving contact 62 of the two moving springs 6.

[0023] In this embodiment, the support block 22 plays a crucial role in the relay's engagement process. If the support block 22 is too heavy, it significantly impacts the relay's performance. By using soft copper wire for the flexible conductor 7 and welding it between the second moving contacts 62 of the two moving springs 6, it serves two purposes: it carries current, and the lightweight nature of the soft copper wire results in minimal increase in the weight of the support block 22, thus meeting the relay's vibration and shock resistance requirements. If a long copper sheet were used to connect the second moving contacts 62 of the two moving springs 6, it would not only significantly increase the weight of the support block 22 but also cause deformation of the copper sheet during the riveting process, hindering the synchronous engagement of the two moving contacts and greatly reducing the relay's performance.

[0024] like Figure 4 As shown, the base 1 has multiple blocks 8 located between the load pins 4.

[0025] like Figure 4 , Figure 5 and Figure 6 As shown, the magnetic circuit part 2 includes a support block 22, an L-shaped yoke 23, an iron core, and a coil 21 frame with a coil 21. The two ends of the coil 21 are respectively connected to two coil 21 welding pieces. The L-shaped yoke 23 includes a first yoke 231 and a second yoke 232 connected together. The coil 21 frame is fixedly installed on the first yoke 231. The iron core passes through the through hole of the coil 21 frame and is connected to the first yoke 231. The support block 22 is rotatably installed on the side of the second yoke 232 away from the first yoke 231. The side of the support block 22 is provided with a first hook 25. The side of the first yoke 231 near the second yoke 232 is provided with a second hook 26. An elastic element 27 is provided between the first hook 25 and the second hook 26.

[0026] like Figure 4 , Figure 5 and Figure 6 As shown, in order to allow the support block 22 to rotate around the second yoke 232, grooves 221 are provided on both sides of the support block 22, and the second yoke 232 is provided with protrusions 2321 that are adapted to the grooves 221; the support block 22 is installed on the protrusions 2321 of the second yoke 232 through the grooves 221.

[0027] like Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, the elastic element 27 is a tension spring, and the hooks at both ends of the tension spring are respectively hooked into the first hook 25 and the second hook 26, which are used to keep the moving spring 6 on the support block 22 and the stationary spring 5 on the base 1 in the normally open state.

[0028] The relay switching structure provided by the present invention has two load pins 4 symmetrically distributed at the two corners of the base 1. When in use, the L-shaped terminal wires can be inserted into the load pins 4 in the same direction. When a circuit needs to be formed between the two load pins 4, a driving voltage is applied between the two coil 21 solder pieces according to the rated DC voltage of the coil 21. The driving current flows through the coil 21 to generate a magnetic field and magnetize the iron core. The iron core overcomes the tension of the tension spring and attracts the support block 22 to the iron core, so that the first moving contact 61 on the two moving springs 6 on the support block 22 is in contact with the stationary contact 51 of the two stationary springs 5. At this time, the load current enters from one of the load pins 4 and flows through the stationary contact 51, the first moving contact 61, the second moving contact 62, the soft copper wire, the second moving contact 62, the first moving contact 61, and the stationary contact 51 to the other load pin 4, forming a load circuit.

[0029] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present invention should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A relay switching structure, characterized in that: Includes a base (1), a magnetic circuit part (2) is fixedly installed on one side of the base (1), and two symmetrically distributed coil (21) solder pieces and two symmetrically distributed load pins (4) are provided on the other side of the base (1); The coil (21) solder pad and the load pin (4) are both located at the corner of the base (1); The ends of the two coil (21) solder pads pass through the base (1) and are connected to the two ends of the coil (21) in the magnetic circuit part (2); The end of the load pin (4) passes through the base (1) and is provided with a stationary spring (5); The magnetic circuit part (2) has two movable springs (6) on the support block (22) that correspond to the position of the stationary spring (5), and the two movable springs (6) are connected by a flexible conductor (7).

2. The relay switching structure according to claim 1, characterized in that: The stationary reed (5) is provided with a stationary contact (51); The moving spring (6) is provided with a first moving contact (61) corresponding to the stationary contact (51) and a second moving contact (62) connected to the flexible conductor (7).

3. The relay switching structure according to claim 2, characterized in that: The flexible conductor (7) is a soft copper wire, and the two ends of the soft copper wire are respectively welded to the second moving contact (62) of the two moving springs (6).

4. The relay switching structure according to claim 1, characterized in that: The base (1) is provided with a plurality of stops (8) located between the load pins (4).

5. The relay switching structure according to claim 1, characterized in that: The magnetic circuit part (2) includes the support block (22), L-shaped yoke (23), iron core and coil (21) frame with coil (21); The two ends of the coil (21) are respectively connected to two coil (21) solder pads; The L-shaped yoke (23) includes a first yoke (231) and a second yoke (232) connected together; The coil (21) frame is fixedly installed on the first yoke (231), the iron core passes through the through hole of the coil (21) frame and is connected to the first yoke (231), and the support block (22) is rotatably installed on the side of the second yoke (232) away from the first yoke (231). The side of the support block (22) is provided with a first hook (25), the side of the first yoke (231) near the second yoke (232) is provided with a second hook (26), and an elastic element (27) is provided between the first hook (25) and the second hook (26).

6. The relay switching structure according to claim 5, characterized in that: The support block (22) has grooves (221) on both sides, and the second yoke (232) has protrusions (2321) that are adapted to the grooves (221); The support block (22) is mounted on the protrusion (2321) of the second yoke (232) through the groove (221).

7. The relay switching structure according to claim 5, characterized in that: The elastic element (27) is a tension spring, and the hooks at both ends of the tension spring are respectively attached to the first hook (25) and the second hook (26).

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