A low-arc interference optocoupler relay

Abstract

This application provides a low-arc interference optocoupler relay, belonging to the field of relay technology. It includes: a device housing, with a first optical cover disposed inside the housing. A set of arc-exiting components are fixedly installed on the outer surface of the first optical cover. Each arc-exiting component has a conductive wire fixedly connected to its outer surface. Each conductive wire passes through the inside of the device housing and extends to the outside. By setting the arc-exiting components on the outer surface of the first optical cover and cooperating with the conductive wires to guide the arc to the outside of the device housing, the interference of the arc between internal components of the relay can be reduced from the source, significantly improving the stability of the optocoupler relay during operation. It is particularly suitable for precision circuit environments sensitive to arc interference, effectively ensuring the accuracy of circuit signal transmission.

Description

Technical Field

[0001] This application belongs to the field of relay technology, specifically relating to an optocoupler relay with low arc interference. Background Technology

[0002] With the rapid development of industrial automation, smart homes, and new energy power systems, electronic devices are placing increasingly stringent demands on the stability, security, and anti-interference capabilities of signal transmission. Optocoupler relays, as key devices that use light as a medium to achieve electrical signal isolation and transmission, are widely used in scenarios such as high-voltage and low-voltage isolation and noise suppression due to their electrical isolation characteristics between input and output terminals. Their core function is to achieve contactless linkage between control signals and load circuits through an electro-optical-electrical conversion mechanism, avoiding problems such as sparks and wear caused by contact points in traditional electromagnetic relays. They have irreplaceable advantages in high-frequency switching and precision control.

[0003] The core structure of an optocoupler relay typically includes a light-emitting component (such as a light-emitting diode), a light-receiving component (such as a phototransistor or bidirectional thyristor), an isolation package structure, and pin lines. Its working principle is as follows: the electrical signal on the input side drives the light-emitting component to emit light; the light-receiving component receives the light signal and completes photoelectric conversion, thereby controlling the on / off state of the output circuit and achieving electrical isolation between the input and output. To improve the isolation effect, existing optocoupler relays mostly use a single light-emitting cover structure to encapsulate the light-emitting and light-receiving components, blocking electrical connections through insulating materials. Meanwhile, the pin lines, as the critical path for signal transmission, have their insulation design directly affecting anti-interference capabilities. Some products will have simple insulating sleeves on the outside of the pin lines. However, in high-frequency switching or high-voltage scenarios, electric arcs can still be generated inside the relay due to sudden changes in the electric field, especially at the connection between the light-receiving component and the output pin lines. The electromagnetic radiation and high-frequency noise generated by the arcs can severely interfere with the transmission of optical signals and the stability of external circuits.

[0004] Shortcomings of existing technology: 1) Insufficient arc interference suppression capability: Existing optocoupler relays lack targeted arc guiding and elimination structures. The arc generated inside is prone to form electromagnetic interference in the gaps between components, resulting in output signal jitter and reduced control accuracy. Its applicability is limited in interference-sensitive scenarios such as precision instruments and medical equipment.

[0005] 2) Inadequate isolation and anti-interference structure design: Most products use a single-layer light-sealing cover and a simple insulating sleeve, which is difficult to meet the requirements of optical signal isolation, electrical insulation and high-frequency noise filtering at the same time. The collaborative design of the dual light-sealing structure is lacking, and no auxiliary filtering components are set for the pin lines, resulting in obvious shortcomings in anti-interference performance. Utility Model Content

[0006] The purpose of this invention is to provide an optocoupler relay with low arc interference, in order to solve the problem that existing equipment, in high-frequency switching or high-voltage scenarios, lacks a targeted arc guiding and elimination structure, which leads to internal arcs easily forming electromagnetic interference, causing output signal jitter and reduced control accuracy.

[0007] The first aspect of this application provides an optocoupler relay with low arc interference, comprising: a device housing, wherein a first light shield is disposed inside the device housing, a set of arc discharge components are fixedly installed on the outer surface of the first light shield, and a conductive wire is fixedly connected to the outer surface of each arc discharge component, and each conductive wire passes through the inside of the device housing and extends to the outside.

[0008] Preferably, a connecting component is fixedly connected to the outer surface of the first photomask, and a second photomask is fixedly connected to the outer surface of the connecting component.

[0009] Preferably, the first light-receiving cover is provided with a light-receiving component inside. The light-receiving component is connected to a set of second pin lines. The set of second pin lines respectively act on the output terminal and the output terminal. The second pin lines are opened and closed by the light-receiving component control circuit.

[0010] Preferably, each of the second pins is fitted with an insulating shell, and an installation component is fixedly connected to the outer surface of each insulating shell. A set of conductive components is fixedly inserted into the top of the installation component, and a miniature capacitor is connected to each set of conductive components.

[0011] Preferably, the outer wall of the second light-sealing cover is provided with a through hole, and each of the second light-sealing covers is provided with a first pin line inside. The first pin line is connected to a light-emitting component, and each of the first pin lines is a positive electrode and a negative electrode.

[0012] Preferably, each of the first pins is disposed inside the through hole.

[0013] Preferably, the light-emitting component is used to control the opening and closing of the circuit of the light-receiving component.

[0014] Compared with the prior art, the technical solution provided in this application includes at least the following technical effects: 1. This utility model, by setting an arc-guiding component on the outer surface of the first photomask and guiding the arc to the outside of the device housing with a conduction line, can reduce the interference of the arc between the internal components of the relay from the source, significantly improve the stability of the optocoupler relay during operation, and is especially suitable for precision circuit environments that are sensitive to arc interference, effectively ensuring the accuracy of circuit signal transmission.

[0015] 2. This utility model adopts a double-layer isolation structure of a first and a second photomask, combined with the insulation protection of the second pin line by the insulating shell and the filtering effect of the miniature capacitor, forming multiple anti-interference barriers. This design not only enhances the independence of optical signal transmission and reduces the influence of external environment and electrical factors, but also realizes contactless control of input and output signals through optical isolation, which greatly improves the safety and anti-interference capability of the relay.

[0016] Additional aspects and advantages of this application will become apparent in the following description or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a front perspective view of an optocoupler relay with low arc interference proposed in this utility model; Figure 2 This is a cross-sectional plan view of an optocoupler relay with low arc interference proposed in this utility model; Figure 3 A three-dimensional view of the disassembled parts of an optocoupler relay with low arc interference proposed in this utility model; Figure 4 This is a three-dimensional view of the components of a low-arc interference optocoupler relay proposed in this utility model, taken from another angle.

[0018] Reference numerals: 1. Equipment housing; 2. First photomask; 21. Connecting assembly; 22. Second photomask; 23. Arc discharge assembly; 24. Conducting line; 221. Through hole; 222. Light-emitting assembly; 223. First lead wire; 3. Light-receiving assembly; 31. Second lead wire; 32. Insulation housing; 321. Mounting assembly; 322. Conducting assembly; 323. Miniature capacitor. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0021] In some embodiments, please refer to the appendix. Figure 1 - Appendix Figure 4As shown: A low arc interference optocoupler relay includes: a device housing 1, a first light cover 2 is disposed inside the device housing 1, a set of arc discharge components 23 are fixedly installed on the outer surface of the first light cover 2, and a conductive line 24 is fixedly connected to the outer surface of each arc discharge component 23, and each conductive line 24 passes through the inside of the device housing 1 and extends to the outside.

[0022] In this embodiment, the device housing 1 serves as the external protective structure for the optocoupler relay as a whole, providing physical protection and a closed environment for the internal components. This reduces the impact of external environmental factors such as dust and humidity on the internal structure. The first light cover 2 serves as an isolation carrier for the internal core components. The arc-exit component 23 on its outer surface can specifically capture the arc generated when the relay is working, especially the electric spark at the moment of switching action. The arc is then guided to the outside of the device housing 1 through the conduction line 24 and connected to the grounding device or arc absorption circuit, thereby preventing the arc from interfering with the internal components and ensuring the stable transmission of circuit signals.

[0023] In some embodiments, please refer to the appendix. Figure 1 - Appendix Figure 4 As shown: A connecting component 21 is fixedly connected to the outer surface of the first photomask 2, and a second photomask 22 is fixedly connected to the outer surface of the connecting component 21.

[0024] In this embodiment, the connecting component 21 serves as the connecting medium between the first photomask 2 and the second photomask 22. It can be connected by snapping, welding, or insulating bonding to ensure that the two form a whole and relatively closed space. The first photomask 2 and the second photomask 22 are preferably made of light-shielding and insulating materials. The first photomask 2 is mainly used to isolate the light-receiving component 3 from external interference, while the second photomask 22 is used to protect the internal light-emitting component 222. The two together form a double-layer isolation structure, which can prevent external light from interfering with the internal optical signal and avoid signal crosstalk between the light-emitting component 222 and the light-receiving component 3, while improving the mechanical stability of the overall structure.

[0025] In some embodiments, please refer to the appendix. Figure 1 - Appendix Figure 4 As shown: The first light cover 2 is equipped with a light receiving component 3 inside. The light receiving component 3 is connected to a set of second pin lines 31. The set of second pin lines 31 are respectively used for the output end and the output end. The second pin lines 31 are controlled by the light receiving component 3 to open and close the circuit.

[0026] In this embodiment, the light-receiving component 3, as the "receiving and execution core" of the optocoupler relay, is generally composed of components such as phototransistors and photothyristors. This component can convert the received light signal into an electrical signal to control the on / off state of its own circuit. A set of second pin lines 31 are respectively connected to the output terminal of the external circuit. When the light-receiving component 3 receives a light signal, its internal circuit is turned on, so that the external circuit where the second pin line 31 is located forms a circuit. If no light signal is received, the internal circuit is turned off, and the external circuit is also turned off. In this way, the external circuit can be controlled non-contactly through the light signal. This isolation control method helps to reduce electrical interference and improve the safety of the circuit.

[0027] In some embodiments, please refer to the appendix. Figure 1 - Appendix Figure 4 As shown: Each second pin line 31 is fitted with an insulating shell 32 on its outer wall. An installation component 321 is fixedly connected to the outer surface of each insulating shell 32. A set of conductive components 322 is fixedly inserted into the top of the installation component 321. A miniature capacitor 323 is connected between the conductive components 322.

[0028] In this embodiment, the insulating shell 32 is fitted onto the outer wall of the second pin line 31. The shell is made of insulating material and its function is to enhance the insulation performance between the second pin lines 31, preventing leakage or signal interference caused by the pin lines being too close together. The mounting component 321 serves as a fixed carrier for the miniature capacitor 323, which can firmly fix the conductive component 322 on the insulating shell 32. The conductive component 322 and the second pin line 31 are connected in circuit, so that the miniature capacitor 323 is connected in parallel in the circuit where the second pin line 31 is located. The miniature capacitor 323 can play a filtering role, absorbing high-frequency interference signals and instantaneous high voltage generated by electric arc in the circuit, thereby further reducing the impact of electric arc interference on the output circuit and improving the anti-interference capability of the circuit.

[0029] In some embodiments, please refer to the appendix. Figure 1 - Appendix Figure 4 As shown: The outer wall of the second light-sealing cover 22 is provided with a through hole 221, and each second light-sealing cover 22 is provided with a first pin line 223 inside. The first pin line 223 is connected to the light-emitting component 222, and each first pin line 223 is a positive electrode and a negative electrode respectively.

[0030] In this embodiment, the through hole 221 on the outer wall of the second photomask 22 is used to allow the first pin line 223 to pass through, so that the first pin line 223 can extend from the inside of the second photomask 22 to the outside and achieve connection with the external control circuit. The light-emitting component 222 inside the second photomask 22 is connected to a set of first pin lines 223. Two of the first pin lines 223 act as positive and negative electrodes, respectively. After the external control voltage is applied, the light-emitting component 222 can be driven to emit light signals of a specific wavelength, thereby providing a control signal source for the light-receiving component 3. This process is the key link in the optocoupler relay's electrical-to-optical conversion.

[0031] In some embodiments, please refer to the appendix. Figure 1 - Appendix Figure 4 As shown: Each first pin line 223 is disposed inside the through hole 221.

[0032] In this embodiment, the size of the through hole 221 is adapted to the diameter of the first pin line 223. When the first pin line 223 passes through the through hole 221, the two can be filled with a sealing material. This not only fixes the position of the first pin line 223, but also enhances the sealing performance of the second light cover 22, preventing external dust and moisture from entering the interior and affecting the normal operation of the light-emitting component 222. At the same time, it prevents the light signal from leaking from the through hole 221, ensuring that the light signal can be efficiently transmitted to the light-receiving component 3.

[0033] In some embodiments, please refer to the appendix. Figure 1 - Appendix Figure 4 As shown: The light-emitting component 222 is used to control the opening and closing of the circuit of the light-receiving component 3.

[0034] In this embodiment, the light-emitting component 222 serves as the "signal transmitter" of the optocoupler relay. Its light-emitting state is determined by the control voltage connected to the first pin line 223. When the light-emitting component 222 is in the light-emitting state, light can be transmitted to the light-receiving component 3 through the connection gap between the first and second light-receiving covers 2 and 22. After receiving the light signal, the light-receiving component 3 will conduct its own circuit, thereby controlling the opening and closing of the external circuit where the second pin line 31 is located. Conversely, if the light-emitting component 222 does not emit light, the light-receiving component 3 will be disconnected, and the external circuit will be shut down. This "light-emitting-light-receiving" linkage mechanism achieves optical isolation between the input signal and the output signal, fundamentally reducing the transmission path of electrical interference.

[0035] Working Principle: This optocoupler relay with low arc interference characteristics achieves control of external circuits through an "electric-optical-electric" isolation conversion mechanism. The specific process is as follows: In the signal input stage, the external control circuit supplies power to the light-emitting component 222 inside the second photomask 22 via the first pin line 223. After being powered on, the light-emitting component 222 emits a light signal. In the signal transmission stage, the light signal passes through the isolation space formed by the first photomask 2 and the second photomask 22 and is transmitted to the light-receiving component 3 inside the first photomask 2. In the signal conversion and execution stage, the light-receiving component 3 converts the light signal into an electrical signal to control the conduction or disconnection of its own circuit, and then controls the opening and closing of the external output circuit through the second pin line 31. In the arc interference suppression stage, the arc generated during the switching action is captured by the arc-exiting component 23 on the outer surface of the first photomask 2 and guided to the outside through the conduction line 24. At the same time, the insulating shell 32 on the second pin line 31 enhances the insulation performance, and the miniature capacitor 323 absorbs high-frequency interference. Under the dual action, the impact of the arc on the internal components and signals is significantly reduced.

[0036] In this application, it should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. The term "multiple" refers to two or more, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] In this application, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A low-arc interference optocoupler relay, characterized in that, include: The equipment housing (1) has a first light cover (2) inside. A set of arc discharge components (23) is fixedly installed on the outer surface of the first light cover (2). Each arc discharge component (23) has a conductor (24) fixedly connected to its outer surface. Each conductor (24) passes through the inside of the equipment housing (1) and extends to the outside.

2. The low-arc interference optocoupler relay according to claim 1, characterized in that: A connecting component (21) is fixedly connected to the outer surface of the first light cover (2), and a second light cover (22) is fixedly connected to the outer surface of the connecting component (21).

3. The low-arc interference optocoupler relay according to claim 2, characterized in that: The first light-receiving cover (2) has a light-receiving component (3) inside. The light-receiving component (3) is connected to a set of second pin lines (31). The second pin lines (31) are opened and closed by the control circuit of the light-receiving component (3).

4. The low-arc interference optocoupler relay according to claim 3, characterized in that: Each of the second pin lines (31) is fitted with an insulating shell (32) on its outer wall. An installation assembly (321) is fixedly connected to the outer surface of each insulating shell (32). A set of conductive components (322) is fixedly inserted into the top of the installation assembly (321). A miniature capacitor (323) is connected to the conductive components (322) in a circuit.

5. The low-arc interference optocoupler relay according to claim 2, characterized in that: The outer wall of the second light cover (22) is provided with a through hole (221), and each second light cover (22) is provided with a first pin line (223) inside. The first pin line (223) is connected to the light-emitting component (222), and each first pin line (223) is a positive electrode and a negative electrode respectively.

6. The low-arc interference optocoupler relay according to claim 5, characterized in that: Each of the first pin lines (223) is disposed inside the through hole (221).

7. The low-arc interference optocoupler relay according to claim 5, characterized in that: The light-emitting component (222) is used to control the opening and closing of the circuit of the light-receiving component (3).

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