Strong magnetic enhanced relay contact voltage control device

Abstract

The utility model relates to the field of relays, in particular to a strong magnetic enhanced relay contact voltage control device, which comprises a movable contact spring, a shunting sheet, a yoke, an armature, a first strong magnetic sheet, a second strong magnetic sheet, a coil, a 30-pin leading-out sheet, an arc extinguishing sleeve, a coil pin, a movable contact, a static contact, a 30-pin and an 87-pin, one end of the movable contact spring is connected with the armature, the other end of the movable contact spring is connected with the movable contact, and the other end of the static contact spring is connected with the 87-pin. The splitter is arranged between the movable contact spring and the static contact, the yoke is respectively connected with the first strong magnetic sheet and the second strong magnetic sheet, and one end of the armature is connected with the movable contact spring. The strong magnetic sheets are added and the positions and the number of the strong magnetic sheets are reasonably arranged, so that the power-off capability and the reliability of the relay are remarkably improved; strong magnets in the arc extinguishing sleeve can attract and extinguish electric arcs generated in the power-off process, and therefore contacts and a circuit are protected against damage. The structure is simple, performance is stable and reliability is high; wide application prospects are realized in the fields of electric power, communication, automatic control and the like.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, and more specifically, to a device for controlling the voltage of relay contacts with a strong magnetic enhancement. Background Technology

[0002] Relays, as important electrical control devices, are widely used in many fields. In power systems, relays are used for circuit protection and automatic control, quickly cutting off circuits to prevent equipment damage in the event of abnormal current or voltage. In industrial automation, relays, as signal amplification and isolation components, enable efficient transmission and conversion of control signals, improving the reliability and efficiency of production lines. Furthermore, relays play an irreplaceable role in communication, transportation, and security systems. For example, in communication base stations, relays control power switching and signal transmission; in traffic light control systems, relays are responsible for precise light switching; and in security monitoring systems, relays trigger alarm devices and link other security equipment. It can be said that relays, with their unique performance and wide range of applications, occupy a pivotal position in modern electronic technology.

[0003] As an important electrical control device, the relay plays a crucial role in circuit switching, signal transmission, and safety protection. Among its components, the contact control voltage mechanism is the core of the relay, and its performance directly affects the relay's reliability, stability, and service life.

[0004] In existing technologies, relays often fail to accurately disconnect circuits during power-off processes due to internal mechanical structure failures, contact point oxidation or burnout, and insufficient coil current. When a relay needs to disconnect a circuit, if it cannot complete the action quickly and accurately, current may continue to flow in the circuit, thereby damaging equipment and systems. Utility Model Content

[0005] To address the aforementioned deficiencies in the prior art, this utility model provides a strong magnetic enhancement relay contact control voltage device, comprising:

[0006] The system comprises a moving reed, a shunt plate, a yoke, an armature, a first strong magnetic plate, a second strong magnetic plate, a coil, a 30-pin lead-out piece, an arc-extinguishing sleeve, coil leads, a moving contact, a stationary contact, and pins 30 and 87. One end of the moving reed is connected to the armature, and the other end is connected to the moving contact. The shunt plate is positioned between the moving reed and the stationary contact. The yoke is connected to both the first and second strong magnetic plates. One end of the armature is connected to the moving reed, and the other end of the armature contacts or separates from the yoke under electromagnetic force. The first and second strong magnetic plates are located on both sides of the yoke, the coil is connected to the coil leads, the 30-pin lead-out piece is connected to the moving contact or the stationary contact, the arc extinguishing sleeve is disposed below the moving contact or the stationary contact, the coil leads are used as the interface for connecting the coil to an external power source, and are mounted on the base of the relay together with the 30-pin lead-out piece, the moving contact is connected to the moving spring, the stationary contact is fixedly disposed on the base of the relay, and the 30-pin and 87-pin are respectively disposed at both ends of the lower side of the relay.

[0007] Preferably, the moving spring is made of 3J01 alloy, 3J31, 3J32, Co67NiNb, spring steel or stainless steel.

[0008] Preferably, the shunt plate is made of copper or a copper alloy.

[0009] Preferably, the yoke is made of iron or an iron-nickel alloy.

[0010] Preferably, the armature is made of 1J65 alloy or permalloy.

[0011] Preferably, the first strong magnetic sheet is made of neodymium iron boron or samarium cobalt magnet.

[0012] Preferably, the second strong magnetic sheet is made of neodymium iron boron or samarium cobalt magnet.

[0013] Preferably, the coil is made of insulated wire.

[0014] Preferably, the device further includes a temperature control module.

[0015] Preferably, the device further includes a protection circuit.

[0016] The strong magnetic enhancement relay contact control voltage device of this utility model has the following beneficial effects: by adding strong magnetic sheets and arranging their positions and quantities reasonably, the power-off capability and reliability of the relay are significantly improved; at the same time, the strong magnet in the arc-extinguishing sleeve can also attract and extinguish the electric arc generated during the power-off process, thereby protecting the contacts and circuit from damage; it has a simple structure, stable performance, and high reliability; and it has broad application prospects in the fields of power, communication, and automation control. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0018] Figure 1 This is a perspective view of the strong magnetic enhancement type relay contact control voltage device of this utility model;

[0019] Figure 2 This is a front view of the strong magnetic enhancement type relay contact control voltage device of this utility model;

[0020] Figure 3 This is a top view of the strong magnetic enhancement type relay contact control voltage device of this utility model;

[0021] Figure 4 This is a bottom view of the strong magnetic enhancement relay contact control voltage device of this utility model;

[0022] Figure 5 This is a left view of the strong magnetic enhancement relay contact control voltage device of this utility model;

[0023] Figure 6 This is a right view of the strong magnetic enhancement type relay contact control voltage device of this utility model.

[0024] In the diagram, 1-moving reed, 2-shunt plate, 3-yoke, 4-armature, 5-first strong magnetic plate, 6-second strong magnetic plate, 7-coil, 8-pin 30 lead-out plate, 9-arc extinguishing sleeve, 10-coil pin, 11-moving contact, 12-stationary contact, 13-pin 30, 14-pin 87. Detailed Implementation

[0025] Figure 1 This is a perspective view of the strong magnetic enhancement type relay contact control voltage device of this utility model; Figure 2 This is a front view of the strong magnetic enhancement type relay contact control voltage device of this utility model; Figure 3 This is a top view of the strong magnetic enhancement type relay contact control voltage device of this utility model; Figure 4 This is a bottom view of the strong magnetic enhancement relay contact control voltage device of this utility model; Figure 5 This is a left view of the strong magnetic enhancement relay contact control voltage device of this utility model; Figure 6This is a right view of the strong magnetic enhancement relay contact control voltage device of this utility model. Please refer to [link / reference]. Figures 1-6 The strong magnetic enhancement relay contact control voltage device provided in the first embodiment of this utility model includes at least the following components: a moving spring 1, a shunt plate 2, a yoke 3, an armature 4, a first strong magnetic plate 5, a second strong magnetic plate 6, a coil 7, a 30-pin 13 lead plate 8, an arc-extinguishing sleeve 9, a coil pin 10, a moving contact 11, a stationary contact 12, a 30-pin 13, and an 87-pin 14. One end of the moving spring 1 is connected to the armature 4, and the other end of the moving spring 1 is connected to the moving contact 11. The shunt plate 2 is disposed between the moving spring 1 and the stationary contact 12. The yoke 3 is connected to the first strong magnetic plate 5 and the second strong magnetic plate 6 respectively. One end of the armature 4 is connected to the moving spring 1. The other end of the armature 4 is in contact with or separated from the yoke 3 under the action of electromagnetic force. The first strong magnetic piece 5 and the second strong magnetic piece 6 are located on both sides of the yoke 3, respectively. The coil 7 is connected to the coil foot 10. The lead piece 8 of the 30-pin 13 is connected to the moving contact 11 or the stationary contact 12. The arc extinguishing sleeve 9 is located below the moving contact 11 or the stationary contact 12. The coil foot 10 is used as the interface for connecting the coil 7 to the external power supply. It is installed on the base of the relay together with the lead piece 8 of the 30-pin 13. The moving contact 11 is connected to the moving spring 1. The stationary contact 12 is fixedly located on the base of the relay. The 30-pin 13 and the 87-pin 14 are located at both ends of the lower side of the relay.

[0026] When the armature 4 is attracted, the moving spring 1 deforms, causing the moving contact 11 to contact the stationary contact 12, thereby completing the circuit. The moving spring 1 is made of materials with high elasticity, high conductivity and high corrosion resistance, such as 3J01 alloy, 3J31, 3J32, Co67NiNb, spring steel or stainless steel, to ensure its long-term stable performance.

[0027] The main function of shunt 2 is to prevent excessive current surges when the contacts are closed, thereby protecting the contacts. Shunt 2 can be made of materials with low resistivity and good conductivity, such as copper or copper alloys.

[0028] The yoke 3 is an important component of the relay magnetic circuit, serving to guide magnetic flux and enhance the magnetic field. The yoke 3 can be made of materials with high permeability and low magnetic reluctance, such as iron or iron-nickel alloys. In this embodiment, the yoke 3 is connected to the first strong magnetic plate 5 and the second strong magnetic plate 6, forming a complete magnetic circuit.

[0029] The armature 4 is the key moving component in this embodiment. When the coil 7 is energized, the generated electromagnetic force causes the armature 4 to be attracted to the yoke 3, thereby bringing the moving contact 11 into contact with the stationary contact 12. The armature 4 can be made of materials with high permeability, low magnetic resistance, and good mechanical properties, such as 1J65 alloy or permalloy.

[0030] The first strong magnetic plate 5 and the second strong magnetic plate 6 are located on both sides of the yoke 3, respectively, and they enhance the magnetic field and improve the electromagnetic force. Both the first strong magnetic plate 5 and the second strong magnetic plate 6 can be made of permanent magnet materials with high remanence, high coercivity, and high energy product, such as neodymium iron boron or samarium cobalt magnets. By rationally arranging the position and number of strong magnetic plates, the relay's closing force and disconnecting capability can be significantly improved.

[0031] Coil 7 is an electromagnetic component in the relay. It generates an electromagnetic field by being energized, thereby driving the movement of armature 4. Coil 7 can be made of insulated wire, and its number of turns and resistance value can be designed and adjusted according to specific requirements. In this embodiment, coil 7 is connected to coil pin 10 for connection to an external power source.

[0032] Pin 30, lead 13, is one of the interfaces connecting the relay to the external circuit. It connects to the moving contact 11 or the stationary contact 12 to transmit control or power signals. The arc-extinguishing sleeve 9 uses a strong magnet to attract and extinguish the arc generated when the contacts open, thus protecting the contacts and circuit from arc damage. Coil pin 10 is the interface connecting the coil 7 to the external power supply; it can be mounted on the relay base together with pin 30, lead 13, and lead 8.

[0033] Moving contact 11 and stationary contact 12 are key contact components in the relay; they connect or disconnect to make or break the circuit. Pins 30 (13) and 87 (14) are two other interfaces connecting the relay to external circuits, used for transmitting control signals or power signals, respectively. When moving contact 11 is in contact with stationary contact 12, conduction occurs between pins 30 (13) and 87 (14); when moving contact 11 is disconnected from stationary contact 12, conduction occurs between pins 30 (13) and 87 (14).

[0034] In some optional implementations of this embodiment, the device may further include a temperature control module. Specifically, the temperature control module may include a temperature sensor and an MCU. The temperature sensor is used to monitor the ambient temperature in real time. Temperature sensors include, but are not limited to, thermistors, thermocouples, and DS18B20 sensors. These sensors can accurately sense changes in ambient temperature and convert them into electrical signals. The microcontroller is responsible for receiving the output signal from the temperature sensor and performing logical judgments based on a preset temperature threshold. The microcontroller can be a high-performance microcontroller, such as an STM32 or AVR, which possesses powerful data processing and control capabilities.

[0035] In practical applications, relay contacts need to be switched frequently, thus facing problems such as contact wear, arcing, and back electromotive force. These problems directly affect the service life and reliability of the relay. Therefore, in some optional implementations of this embodiment, the device may also include a protection circuit. The protection circuit includes a reverse diode D1, an RC snubber circuit, a varistor RV1, a resistor R1, and an RL circuit that are electrically connected.

[0036] A reverse diode is connected in parallel across the relay coil to ensure that when the coil is de-energized, the back electromotive force (EMF) can discharge through the diode, thus protecting the driver transistor. The reverse diode absorbs the back EMF generated when the relay coil is de-energized, protecting the relay's driver transistor. When the relay coil is de-energized, due to the principle of electromagnetic induction, the coil generates a back EMF. If this EMF is large enough, it can break down the driver transistor, causing circuit failure. The presence of the reverse diode provides a current path to dissipate the energy of the back EMF, thereby protecting the circuit.

[0037] An RC snubber circuit is connected in parallel across the load. The circuit includes a resistor R2 and a capacitor C1, which are connected in series. It is primarily used to absorb transient voltages and currents generated when the load is switched on, especially the arc discharge and back electromotive force generated when inductive loads (such as motors and solenoid valves) are disconnected. The RC circuit limits transient voltages and currents to a safe range through the energy dissipation of resistor R2 and the energy storage of capacitor C1.

[0038] A varistor RV1 is connected in parallel across the load to absorb voltage spikes when the load is switched on, protecting the circuit from overvoltage damage. RV1 is a non-linear resistor whose resistance changes with voltage. When the voltage exceeds the varistor's threshold value, the resistance drops rapidly, and the current increases, thus limiting the voltage within a safe range. The varistor is used to absorb voltage spikes when the load is switched on, protecting the circuit from overvoltage damage.

[0039] Resistor R1 and RL circuit: For capacitive loads, a resistor R1 or RL circuit is connected in series at the load terminals to limit the rate of change of current and reduce the possibility of arcing. The resistor R1 and RL circuit, through energy dissipation, limits the transient current generated during load switching to a safe range.

[0040] The working process of this embodiment is as follows:

[0041] (1) The process of energizing and engaging:

[0042] When an external power source supplies electricity to the coil through the coil pins, an electromagnetic field is generated inside the coil. This electromagnetic field acts on the air gap between the armature and the yoke, generating a downward electromagnetic force. When this electromagnetic force exceeds the spring force between the armature and the moving reed, the armature is attracted to the yoke. Simultaneously, the moving reed deforms, causing the moving contact to make contact with the stationary contact, thus achieving conductivity between pins 30 and 87.

[0043] In this process, the first and second strong magnetic plates enhance the magnetic field and increase the electromagnetic force. They strengthen the electromagnetic field generated by the coil by guiding the magnetic flux and increasing the magnetic reluctance of the magnetic circuit, thus making it easier for the armature to be attracted.

[0044] (2) Power-off separation process

[0045] When the external power supply is disconnected or the current in the coil decreases to a certain level, the electromagnetic field generated by the coil weakens. At this time, the spring force between the armature and the moving reed becomes greater than the electromagnetic force, causing the armature to separate from the yoke. Simultaneously, the moving reed returns to its original position, separating the moving contact from the stationary contact, thereby achieving power disconnection between pins 30 and 87.

[0046] During a power outage, the sudden interruption of current between the moving and stationary contacts generates an electric arc. This arc can damage the contacts and the circuit. To address this issue, a strong magnet is incorporated into the arc-extinguishing sleeve to attract the arc. When an arc is generated, the strong magnet draws it into the sleeve, extinguishing it and protecting the contacts and circuit from arc damage.

[0047] (3) Enhancement of power-off capability by strong magnetism

[0048] By incorporating strong magnetic sheets and arranging them appropriately in terms of position and quantity, the power-breaking capability of a relay can be significantly improved. On one hand, the strong magnet enhances the electromagnetic field generated by the coil, making it easier for the armature to separate from the yoke when power is cut off. On the other hand, the strong magnet can also attract and extinguish the electric arc generated during the power-off process, thus protecting the contacts and circuit from damage. These two aspects together improve the relay's power-breaking capability and reliability.

[0049] The working principle of this utility model is as follows:

[0050] The relay works by energizing the coil pins, which induces electromagnetic induction in the iron core, attracting the armature and thus creating a connection between pins 30 and 87. De-energizing the coil pins causes the iron core and armature to separate via a spring, de-energizing pins 30 and 87. This de-energizing process generates an electric arc. The strong magnet added to the arc-extinguishing sleeve attracts the arc, thereby enhancing the relay's de-energizing capability.

[0051] In practical applications, the relay's power-off capability is 100A 14V. After using this embodiment, the relay's power-off capability is 100A 48V, which shows a significant improvement in the relay's power-off capability.

[0052] The beneficial effects of this utility model through the above embodiments are: by adding strong magnetic sheets and arranging their positions and quantities reasonably, the power-off capability and reliability of the relay are significantly improved; at the same time, the strong magnet in the arc-extinguishing sleeve can also attract and extinguish the electric arc generated during the power-off process, thereby protecting the contacts and circuit from damage; the structure is simple, the performance is stable, and the reliability is high; it has broad application prospects in the fields of power, communication, and automation control.

[0053] This utility model has been described based on specific embodiments, but those skilled in the art will understand that various changes and equivalent substitutions can be made without departing from the scope of this utility model. Furthermore, to adapt to specific applications of this utility model, numerous modifications can be made without departing from its protection scope. Therefore, this utility model is not limited to the specific embodiments disclosed herein, but includes all embodiments falling within the protection scope of the claims.

Claims

1. A strong magnetic enhancement type relay contact control voltage device, characterized in that, include: The system comprises a moving reed, a shunt plate, a yoke, an armature, a first strong magnetic plate, a second strong magnetic plate, a coil, a 30-pin lead-out piece, an arc-extinguishing sleeve, coil leads, a moving contact, a stationary contact, and pins 30 and 87. One end of the moving reed is connected to the armature, and the other end is connected to the moving contact. The shunt plate is positioned between the moving reed and the stationary contact. The yoke is connected to both the first and second strong magnetic plates. One end of the armature is connected to the moving reed, and the other end of the armature contacts or separates from the yoke under electromagnetic force. The first and second strong magnetic plates are located on both sides of the yoke, the coil is connected to the coil leads, the 30-pin lead-out piece is connected to the moving contact or the stationary contact, the arc extinguishing sleeve is disposed below the moving contact or the stationary contact, the coil leads are used as the interface for connecting the coil to an external power source, and are mounted on the base of the relay together with the 30-pin lead-out piece, the moving contact is connected to the moving spring, the stationary contact is fixedly disposed on the base of the relay, and the 30-pin and 87-pin are respectively disposed at both ends of the lower side of the relay.

2. The strong magnetic enhancement type relay contact control voltage device according to claim 1, characterized in that, The moving spring is made of 3J01 alloy, 3J31, 3J32, Co67NiNb, spring steel or stainless steel.

3. The strong magnetic enhancement type relay contact control voltage device according to claim 1, characterized in that, The shunt plate is made of copper or a copper alloy.

4. The strong magnetic enhancement type relay contact control voltage device according to claim 1, characterized in that, The yoke is made of iron or an iron-nickel alloy.

5. The strong magnetic enhancement type relay contact control voltage device according to claim 1, characterized in that, The armature is made of 1J65 alloy or permalloy.

6. The strong magnetic enhancement type relay contact control voltage device according to claim 1, characterized in that, The first strong magnetic sheet is made of neodymium iron boron or samarium cobalt magnets.

7. The strong magnetic enhancement type relay contact control voltage device according to claim 1, characterized in that, The second strong magnetic sheet is made of neodymium iron boron or samarium cobalt magnets.

8. The strong magnetic enhancement type relay contact control voltage device according to claim 1, characterized in that, The coil is made of insulated wire.

9. The strong magnetic enhancement type relay contact control voltage device according to any one of claims 1 to 8, characterized in that, The device also includes a temperature control module.

10. The strong magnetic enhancement type relay contact control voltage device according to any one of claims 1 to 8, characterized in that, The device also includes a protection circuit.

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