Single-coil conversion type dry reed high voltage relay

Abstract

The utility model discloses a single coil conversion type dry spring high voltage relay, specifically relates to dry spring relay technical field, including shell and the relay assembly of parallelly arranged in the shell, and the relay assembly includes coil skeleton, the coil of winding setting on coil skeleton and the dry spring tube component of setting in coil skeleton, and the dry spring tube component includes the first dry spring tube and the second dry spring tube of parallelly arranged, and the permanent magnet is equipped with in coil skeleton near the first dry spring tube, and the first dry spring tube can be applied to the magnetic force through the permanent magnet to first dry spring tube, and the first dry spring tube and the second dry spring tube are in opposite state, that is, the first dry spring tube is in the on state, and the second dry spring tube is in the off state, or the first dry spring tube is in the off state, and the second dry spring tube is in the on state, and the setting of permanent magnet realizes the control function of conversion type.

Description

Technical Field

[0001] This utility model relates to the field of reed relay technology, and in particular to a single-coil switching type reed high-voltage relay. Background Technology

[0002] A reed switch, also known as a magnetic reed switch or magnetic reed relay, has a core component of a magnetic reed sealed in an inert gas or high-vacuum glass tube. The reed is magnetized by an external magnetic field to conduct the circuit. It features small current control of large current and high / low voltage isolation, and is widely used in automatic control, medical electronics, electric vehicles, and instrumentation. As a special magnetically sensitive switch, the reed relay can reflect signals such as voltage, current, power, and current polarity, and is widely used in fields such as monitoring, active control, and computer control technology. A reed relay primarily consists of a dry reed and an excitation coil. The dry reed (contact) is sealed, effectively preventing dust contamination, reducing contact corrosion, and minimizing arcing during operation. It also features a simple overall structure, small size, and low pull-in power, typically with pull-in and release times within 2-4 ms. Generally, different specifications (i.e., different withstand voltages) of reed switches are selected for different applications, especially for complex control environments under high voltage, such as new energy storage equipment testing, medical emergency testing equipment, electromagnetic testing equipment, and high-voltage line switching points. These applications require switching control functions. Existing relays with switching control functions have relatively complex structures; this paper provides a simpler solution to address this issue. Summary of the Invention

[0003] I. Technical problems to be solved To address the aforementioned shortcomings of existing technologies, a single-coil changeover reed high-voltage relay is provided, which solves the problem of how to achieve a high-voltage reed relay and changeover control function while saving costs.

[0004] II. Technical Solution To solve the above problems, a single-coil changeover type reed high-voltage relay is provided, including a housing and a relay assembly arranged in parallel within the housing; The relay assembly includes a coil frame, a coil wound on the coil frame, and a reed switch assembly disposed within the coil frame; The reed switch assembly includes a first reed switch and a second reed switch connected in parallel; A permanent magnet is provided inside the coil frame near the first reed switch. The permanent magnet can apply magnetic force to the first reed switch, so that the first reed switch and the second reed switch are in opposite states; that is, the first reed switch is in the on state and the second reed switch is in the off state, or the first reed switch is in the off state and the second reed switch is in the on state.

[0005] Preferably, the first reed switch and the second reed switch are arranged in parallel side by side within the coil frame.

[0006] Preferably, the coil frame has a through hole for accommodating the middle body of the first and second reed switches, with the two ends of the first and second reed switches extending out from the two ends of the through hole, respectively.

[0007] Preferably, the through hole for accommodating the first reed switch is further provided on the side away from the second reed switch, with a receiving groove for accommodating the permanent magnet.

[0008] Preferably, the reed switch pins and coil pins of the relay assembly extending downwards are fixed to the circuit board at the bottom of the housing.

[0009] Preferably, the reed switch pins are fixed near both ends of the circuit board, and the coil pins are fixed in the middle of the circuit board.

[0010] Preferably, the downward-extending feet of the coil frame are inserted and fixed into slots on the circuit board.

[0011] Preferably, the housing is filled with epoxy resin.

[0012] III. Beneficial Effects of This Utility Model Compared with the prior art, this utility model achieves a switching control function by setting a permanent magnet. Specifically, the permanent magnet can apply magnetic force to the first relay component, so that it is in the opposite state to the second relay component; that is, when the first relay component is in the on state, the second relay component is in the off state; or when the first relay component is in the off state, the second relay component is in the on state. By adjusting the position of the permanent magnet, it can be ensured that the first relay component and the second relay component do not interfere with each other when switching. Furthermore, the parallel / linear layout adapts to different installation spaces, and the base is partitioned to fix the pins to prevent high voltage breakdown; the epoxy resin filling blocks air ionization and provides a fixing effect, improving voltage resistance. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention; Figure 2 This is a structural diagram of a practical relay assembly; Figure 3 This is a cross-sectional view of the present invention; In the picture: 1 is the housing; 2 is the circuit board; 2a is the slot; 3 is the coil frame; 3a is the ground pin; 4 is the coil; 4a is the coil pin; 5 is the reed switch; 5a is the first reed switch; 5b is the second reed switch; 5c is the reed switch pin; 6 is the through hole; 7 is the receiving slot. 10 is a relay assembly; 11 is a permanent magnet. Detailed Implementation

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0015] like Figure 1 As shown, the single-coil changeover type reed high-voltage relay includes a housing 1 and a relay assembly 10 arranged in parallel within the housing 1; The relay assembly 10 includes a coil frame 3, a coil 4 wound on the coil frame 3, and a reed switch assembly 5 disposed within the coil frame 3; The reed switch assembly 5 includes a first reed switch 5a and a second reed switch 5b connected in parallel. A permanent magnet 11 is provided inside the coil frame 3 near the first reed switch 5a. The permanent magnet 11 applies a magnetic force to the first reed switch 5a, causing it and the second reed switch 5b to be in opposite states; that is, the first reed switch 5a is in the on state and the second reed switch 5b is in the off state, or the first reed switch 5a is in the off state and the second reed switch 5b is in the on state. Specifically, if the permanent magnet 1 is not provided, the first reed switch 5a and the second reed switch 5b are in a synchronized state. After the permanent magnet 11 is set, the first reed switch 5a is kept in the closed state in the initial state under the action of the permanent magnet 11. After being energized, the magnetic field generated by the coil 4 overcomes the magnetic force of the permanent magnet 11, thereby switching the first reed switch 5a to the open state. Since the second reed switch 5b is not affected by the permanent magnet 11, it enters the closed state under the action of the magnetic force generated by the coil 4, thereby realizing the switching state of the two sets of reed relays. The permanent magnet 11 needs to be set in an appropriate position according to the magnitude of the magnetic force.

[0016] Conventional relay assemblies include a coil frame, a coil wound on the coil frame, and a reed switch disposed within the coil frame. The reed switch is a high-voltage resistant reed switch, which is a structural feature of conventional high-voltage reed relays. However, ordinary single-coil reed switches cannot achieve switching functions. The core difference between this application and the prior art lies in the fact that a permanent magnet 11 is provided on the outside of the first reed switch 5a, the specific function of which is as described above. This achieves the effect of a single-coil switching high-voltage reed relay. By adjusting the position of the permanent magnet, it can be ensured that the first relay assembly and the second relay assembly do not interfere with each other when switching.

[0017] The first reed switch 5a and the second reed switch 5b are arranged in parallel side by side within the coil frame 3, as shown in the following figure. Figure 3As shown, the coil frame 3 has through holes 6 for accommodating the main body of the first reed switch 5a and the second reed switch 5b. The two ends of the first reed switch 5a and the second reed switch 5b extend from the two ends of the through holes 6, respectively. Specifically, in this embodiment, there are two through holes 6 arranged side-by-side to accommodate the first reed switch 5a and the second reed switch 5b, respectively. On the side of the through hole 6 accommodating the first reed switch 5a that is away from the second reed switch 5b, there is also a receiving groove 7 for accommodating the permanent magnet 11. Figure 3 As shown, the receiving groove 7, the through hole 6 for receiving the first reed switch 5a, and the through hole 6 for receiving the second reed switch 5b are arranged sequentially from left to right. This arrangement can separate the permanent magnet 11 from the second reed switch 5b, thereby avoiding magnetic field interference from the permanent magnet 11 to the second reed switch 5b and affecting the conversion control effect. Furthermore, the permanent magnet 11 is located in the middle of the first reed switch 5a and can directly act on the magnetic reed inside the first reed switch 5a.

[0018] The reed switch pin 5c and coil pin 4a extending downward from the relay assembly 10 are fixed to the circuit board 2 at the bottom of the housing 1. The reed switch pin 5c is fixed near both ends of the circuit board 2, and the coil pin 4a is fixed in the middle of the circuit board 2.

[0019] The downward-extending feet 3a of the coil frame 3 are inserted and fixed into the slots 2a on the circuit board 2. Finally, the housing 1 is filled with epoxy resin. The epoxy resin filling blocks air ionization and provides a fixing effect, increases the withstand voltage, and further improves safety.

[0020] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A single-coil changeover type reed high-voltage relay, characterized in that, The single-coil changeover reed high-voltage relay includes a housing (1) and a relay assembly (10) arranged in parallel within the housing (1). The relay assembly (10) includes a coil frame (3), a coil (4) wound on the coil frame (3), and a reed assembly (5) disposed within the coil frame (3). The reed switch assembly (5) includes a first reed switch (5a) and a second reed switch (5b) connected in parallel. A permanent magnet (11) is provided inside the coil frame (3) near the first reed switch (5a). The permanent magnet (11) can apply magnetic force to the first reed switch (5a), so that the first reed switch (5a) and the second reed switch (5b) are in opposite states; that is, the first reed switch (5a) is in the on state and the second reed switch (5b) is in the off state, or the first reed switch (5a) is in the off state and the second reed switch (5b) is in the on state.

2. The single-coil changeover type reed high-voltage relay as described in claim 1, characterized in that, The first reed switch (5a) and the second reed switch (5b) are arranged in parallel side by side in the coil frame (3).

3. A single-coil changeover type reed high-voltage relay as described in claim 2, characterized in that, The coil frame (3) has a through hole (6) for accommodating the middle body of the first reed switch (5a) and the second reed switch (5b), with the two ends of the first reed switch (5a) and the second reed switch (5b) extending out from the two ends of the through hole (6).

4. A single-coil changeover type reed high-voltage relay as described in claim 3, characterized in that, The through hole (6) for accommodating the first reed switch (5a) is further provided with a receiving groove (7) for accommodating the permanent magnet (11) on the side away from the second reed switch (5b).

5. A single-coil changeover type reed high-voltage relay as described in claim 1, characterized in that, The reed switch pin (5c) and coil pin (4a) of the relay assembly (10) extending downwards are fixed to the circuit board (2) at the bottom of the housing (1).

6. A single-coil changeover type reed high-voltage relay as described in claim 5, characterized in that, The reed switch pin (5c) is fixed near both ends of the circuit board (2), and the coil pin (4a) is fixed in the middle of the circuit board (2).

7. A single-coil changeover type reed high-voltage relay as described in claim 5, characterized in that, The downward-extending feet (3a) of the coil frame (3) are inserted and fixed into the slots (2a) on the circuit board (2).

8. A single-coil changeover type reed high-voltage relay as described in claim 1, characterized in that, The housing (1) is filled with epoxy resin.

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