Non-polar snap-action electromagnetic relay

Abstract

The present application provides a kind of non-polarity snap type electromagnetic relay, without considering positive and negative polarity, two electrodes can be connected arbitrarily to carry out charging or discharging operation, with base, electromagnetic coil group, adapter assembly, fixed contact assembly, movable contact assembly, each component is arranged in base, adapter assembly is arranged on one side of electromagnetic coil to respond to its driving state, fixed contact assembly and movable contact assembly are arranged correspondingly, and movable contact assembly is connected with fixed contact assembly to contact or separate, base also has a barrier block, barrier block is located between the two symmetrical fixed conductive sheets in fixed contact assembly, and the movable contact stroke of movable spring sheet on movable spring sheet is placed on both sides of barrier block by crossing barrier block, and there is an arc magnet in barrier block.Based on the above conditions, the snap type electromagnetic relay can realize the function of non-polarity, and further improve the variability and safety in application.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic relays, and in particular to a non-polarized snap-action electromagnetic relay that utilizes special structural features to achieve electrical conduction by arbitrarily connecting two electrodes to perform charging or discharging operations without considering positive or negative polarity in the snap-action relay category. Background Technology

[0002] Electromagnetic relays are currently very common electronic switching products, and their technology is quite mature. Depending on different electrical applications and installation environment conditions, manufacturers need to modify the structure of electromagnetic relays accordingly to provide products that meet the requirements.

[0003] When electromagnetic relays are installed in electronic products or circuit systems, the positive and negative polarity connection method must be strictly followed. That is, during manufacturing, the pins of the electromagnetic relay are pre-defined for connection to the positive or negative terminals of the electronic circuit. When the electromagnetic relay is installed, the positive and negative pins must be connected to the positive and negative terminals of the electronic circuit correctly according to the markings on the electromagnetic relay. In this case, if the electronic circuit experiences reverse electrical conduction, it will cause a large electric arc effect in the electromagnetic relay, leading to its destruction by the arc energy. Therefore, current electromagnetic relays must be connected to the positive and negative electrodes of the electronic circuit according to the positive and negative polarity indications; reverse connection or operation of the electronic circuit with reverse electrical conduction is not permitted.

[0004] However, with the advancement of various industries, electrical products are increasingly being used in reverse electrical conduction applications to meet their usage needs. For example, when there is a need for power recharge or when an abnormality occurs during operation, electronic circuits will operate in a reverse electrical conduction state at different times. Common applications include the main electronic switch in electric vehicles and the electronic switch in solar energy storage systems. Therefore, the development of electromagnetic relays must also take into account how to allow electromagnetic relays to carry variable positive and negative current inputs in order to provide electronic relay products suitable for the above-mentioned application scenarios.

[0005] In view of this, the inventor has drawn on years of experience in related industries to conceive and propose a non-polarity snap-action electromagnetic relay, hoping to solve the above-mentioned shortcomings and effectively improve the predicament that electromagnetic relays cannot be used for reverse electrical conduction, thus achieving the goal of non-polarity application. Summary of the Invention

[0006] One objective of this invention is to provide a non-polarity snap-action electromagnetic relay that, through specific structural conditions, allows for the connection of any two electrodes to conduct electrical conduction without considering positive or negative polarity, thereby effectively expanding the application scope and applicability of the snap-action relay.

[0007] To achieve the above objectives, the present invention provides a non-polarity snap-action electromagnetic relay, which can arbitrarily connect two electrodes to perform electrical conduction for charging or discharging operations without considering positive or negative polarity. The non-polarity snap-action electromagnetic relay includes a base, an electromagnetic coil assembly, a connecting component, a fixed contact assembly, and a movable contact assembly. The electromagnetic coil assembly, the connecting component, the fixed contact assembly, and the movable contact assembly are respectively disposed on the base. The connecting component is disposed on one side of the electromagnetic coil assembly to operate in response to the driving state of the electromagnetic coil assembly. The non-polarity snap-action electromagnetic relay is characterized in that: the fixed contact assembly has two fixed conductive plates, a first fixed contact, and a second fixed contact. The two fixed conductive plates are symmetrically arranged, with one end extending beyond the base. The first fixed contact is disposed on one of the fixed conductive plates, and the second fixed contact is disposed on the other fixed conductive plate. The conductive sheet; the movable contact assembly has a movable spring, a first movable contact and a second movable contact. The movable spring has a gap extending inward from one end. The first movable contact and the second movable contact are respectively disposed on the movable spring and located on both sides of the gap, corresponding to the first fixed contact and the second fixed contact. The movable spring has a connecting section at the opposite end where the first movable contact and the second movable contact are disposed. The connecting section is linked by the connecting assembly, thereby allowing the first movable contact and the second movable contact to contact or separate from the first fixed contact and the second fixed contact. The base also has a blocking block located between the two fixed conductive sheets, and the movable spring spans the blocking block so that the travel actuation of the first movable contact and the second movable contact is located on both sides of the blocking block. The blocking block contains an arc-inducing magnet.

[0008] Preferably, the arc-inducing magnet has opposing N and S poles. When current flows from the first movable contact toward the first fixed contact, and the first fixed contact and the first movable contact are close to the N pole of the arc-inducing magnet and away from the S pole of the arc-inducing magnet, or when current flows from the first fixed contact toward the first movable contact, and the first fixed contact and the first movable contact are close to the S pole of the arc-inducing magnet and away from the N pole of the arc-inducing magnet, the arc-inducing magnet guides the arc to stretch the arc toward the movable spring. Alternatively, the arc-inducing magnet has opposing N and S poles. When current flows from the second movable contact toward the second fixed contact and the second fixed contact and the second movable contact are close to the S pole of the arc-inducing magnet and away from the magnetic field of the N pole of the arc-inducing magnet, or when current flows from the second fixed contact toward the second movable contact and the second fixed contact and the second movable contact are close to the N pole of the arc-inducing magnet and away from the magnetic field of the S pole of the arc-inducing magnet, the arc-inducing magnet guides the arc to stretch the arc toward the movable spring.

[0009] Preferably, the movable spring has an arc-connecting portion, which includes the connecting section and two symmetrically arranged discharge sections. When the movable contacts on the left and right sides separate from the fixed contacts, the arc is conducting and not in a de-energized state. The air around the discharge section forms a high electric field and is ionized. The ionized air is conductive, which causes a discharge phenomenon around the two discharge sections and attracts the arc. The arc-inducing magnet guides the arc towards the arc-connecting portion to stretch the arc and reduce the arc energy density. Then, the two discharge sections on the arc-connecting portion attract the stretched arc, so that the arc-connecting portion receives the arc energy and can extinguish the arc. Another objective of this invention is to utilize the fact that lightning is essentially an electric arc, and to attract lightning strikes by using the tip discharge effect of a lightning conductor to prevent surrounding objects from being damaged by lightning. This invention uses an arc-inducing magnet to guide the electric arc towards the arc-receiving part to stretch the arc and reduce the arc energy density. Then, the two discharge sections on the arc-receiving part attract the stretched arc, allowing the arc-receiving part to receive arc energy (e.g., heat energy) and extinguish the arc, thus preventing surrounding objects inside the relay from being damaged by the arc.

[0010] Preferably, the base also has two magnetic element assembly sections, which are symmetrically arranged around the barrier block and located on opposite sides of the first fixed contact and the second fixed contact. Each magnetic element assembly section has a magnet, which is arranged in the same direction as the magnetic pole of the arc-inducing magnet, so as to increase the magnetic strength and stabilize the overall magnetic field performance.

[0011] Preferably, the barrier block also has a double-sided energy absorption section, which includes a first absorption surface and a second absorption surface. The first absorption surface and the second absorption surface are arranged opposite to each other to absorb the heat energy of the electric arc. The first absorption surface and the second absorption surface are made of non-magnetic polymer to enhance the blocking and extinguishing effect of the electric arc.

[0012] Preferably, the blocking block has a base and a protrusion. The protrusion is generally L-shaped and protrudes from the front and top sides of the base. The thickness of the protrusion is less than that of the base. The arc-inducing magnet is located on the bottom surface of the base. The minimum vertical distance between the edges of the two movable contacts and the two fixed contacts and the arc-inducing magnet is 3 to 11 mm, thereby achieving a better arc-extinguishing effect.

[0013] In addition, in practical applications, a specific structure is such that the minimum distance D1 between the center of the first fixed contact and the second fixed contact and the barrier block is 1 to 10 mm, and the minimum distance D2 between the center of the first fixed contact and the second fixed contact and the base is 2.9 to 15 mm.

[0014] In a preferred embodiment of the connecting assembly, the assembly includes a bracket, an elastic element, a magnetic element, and a fixing element. The bracket is connected to the electromagnetic coil assembly. One end of the elastic element is fixed to the bracket, and the other end is fixed to the magnetic element. The fixing element is attached to the magnetic element, and the connecting section of the movable spring is located on the fixing element. When the electromagnetic coil assembly generates magnetic force, the magnetic element is attracted by the electromagnetic coil assembly and drives the fixing element, causing the two movable contacts to contact the two fixed contacts, while simultaneously applying force to the elastic element. When the electromagnetic coil assembly does not generate magnetic force, the magnetic element and the fixing element are reset by the force of the elastic element, causing the first movable contact and the second movable contact to separate from the first fixed contact and the second fixed contact. Preferably, the elastic element is a spring.

[0015] In summary, the non-polarized snap-action electromagnetic relay of the present invention, through specific structural features, allows the snap-action electromagnetic relay to be electrically connected to the two electrodes of the electronic circuit regardless of positive or negative polarity, and to perform charging or discharging operations. Thus, in application, this non-polarized snap-action electromagnetic relay can effectively avoid the arcing effect that occurs when current is reversed, thereby significantly improving product safety and service life. Furthermore, the present invention also provides numerous additional detailed technical features that can be added to this non-polarized snap-action electromagnetic relay, as described in the preceding paragraphs. Attached Figure Description

[0016] Figure 1A A partial three-dimensional exploded view (I) of a preferred embodiment of the non-polarity snap-fit ​​electromagnetic relay of the present invention.

[0017] Figure 1B A partial three-dimensional exploded view (II) of a preferred embodiment of the non-polarity snap-action electromagnetic relay of the present invention.

[0018] Figure 1C A three-dimensional perspective schematic diagram (I) of the application state of the non-polarity snap-action electromagnetic relay of the preferred embodiment of the present invention.

[0019] Figure 1D A two-dimensional perspective schematic diagram (II) of the application state of the non-polarity snap-action electromagnetic relay according to a preferred embodiment of the present invention.

[0020] Figure 2A This is a three-dimensional schematic diagram of the base structure of a preferred embodiment of the present invention.

[0021] Figure 2B This is a side view of the base structure according to a preferred embodiment of the present invention.

[0022] Figure 3 This is a partial cross-sectional view of the base and fixed contact assembly according to a preferred embodiment of the present invention.

[0023] Figure 4 This is a side view of a three-dimensional assembly of a non-polarity snap-fit ​​electromagnetic relay according to a preferred embodiment of the present invention.

[0024] Figure 5A A schematic diagram (I) illustrating the operation of a non-polarized snap-action electromagnetic relay according to a preferred embodiment of the present invention.

[0025] Figure 5B A schematic diagram (II) illustrating the operation of a non-polarized snap-action electromagnetic relay according to a preferred embodiment of the present invention.

[0026] Figure 6A A schematic diagram (III) illustrating the operation of a non-polarized snap-action electromagnetic relay according to a preferred embodiment of the present invention.

[0027] Figure 6B A schematic diagram (IV) illustrating the operation of a non-polarized snap-action electromagnetic relay according to a preferred embodiment of the present invention.

[0028] Figure 7 This is a partially exploded view of a non-polar snap-action electromagnetic relay with two magnetic element assemblies, which is a preferred embodiment of the present invention.

[0029] Figure 8A A schematic diagram (I) of a non-polarized snap-action electromagnetic relay with two magnetic element assemblies, which is a preferred embodiment of the present invention.

[0030] Figure 8B A schematic diagram (II) of the structure of a non-polar snap-action electromagnetic relay with two magnetic element assemblies, which is a preferred embodiment of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 1-Non-polarity snap-action electromagnetic relay; 10-Base; 101-Magnetic component assembly; 1011-Assembly slot; 102-Magnet; 11-Electromagnetic coil assembly; 12-Connecting assembly; 121-Bracket; 122-Elastic element; 123-Magnetic suction element; 124-Fixing element; 13-Fixing contact assembly; 131-Fixing conductive sheet; 1321-First fixed contact; 1322-Second fixed contact; 14-Modible contact assembly; 141-Modible spring; 1410-Arc ignition part; 1411-Connection section; 1412-Discharge section; 1421-First movable contact; 1422-Second movable contact; 15-Arc ignition magnet ; 16-Barrier block; 160-Double-sided energy absorption section; 1601-First absorption surface; 1602-Second absorption surface; 161-Accommodation groove; 162-Base; 163-Protrusion; 164-Extension; A-Minimum vertical distance between the edge of the fixed contact and the arc-inducing magnet; T1-Maximum thickness of the barrier block; H1-Maximum height of the barrier block; L1-Maximum length of the barrier block; D1-Minimum distance between the edges of the first and second fixed contacts and the barrier block; D2-Minimum distance between the edges of the first and second fixed contacts and the base; T2-Thickness of the protrusion; H2-Protrusion height of the protrusion on the top side of the base; L2-Length of the protrusion. Detailed Implementation

[0032] To enable those skilled in the art to clearly understand the content of this invention, please refer to the following description and accompanying drawings.

[0033] Traditional snap-action electromagnetic relays, limited by their design, can only eliminate arcs generated in a single current conduction direction. However, in modern applications such as electric vehicles or solar power systems requiring recharge, existing snap-action electromagnetic relays will inevitably burn out or even explode due to the arc generated during reverse current conduction. To address the shortcomings of existing snap-action electromagnetic relays and meet the needs of practical applications, the inventors have conceived a specific structural design that allows the snap-action electromagnetic relay to effectively eliminate arc energy in both forward and reverse current conduction, achieving a non-polarized application where two electrodes can be arbitrarily connected for electrical conduction to perform charging or discharging operations without considering polarity. The specific technical features of the non-polarized snap-action electromagnetic relay proposed in this invention will be described below.

[0034] Please see Figures 1A to 8BThe following are partial exploded three-dimensional schematic diagrams (I) and (II) of the non-polarity snap-fit ​​electromagnetic relay of the preferred embodiment of the present invention, three-dimensional perspective schematic diagrams (I) and (II), three-dimensional schematic diagram and side view of the base structure, partial cross-sectional view of the base and fixed contact assembly, three-dimensional assembly side view of the non-polarity snap-fit ​​electromagnetic relay, operation and application schematic diagrams (I) to (IV), partial exploded schematic diagram of the assembly of two magnetic elements and structural schematic diagrams (I) and (II) of the assembly of two magnetic elements. The non-polarity snap-action electromagnetic relay 1 of the present invention can connect two electrodes arbitrarily to perform electrical conduction to perform charging or discharging operations without considering positive and negative polarity. The non-polarity snap-action electromagnetic relay 1 has a base 10, an electromagnetic coil group 11, a connecting component 12, a fixed contact component 13, and a movable contact component 14. The electromagnetic coil group 11, the connecting component 12, the fixed contact component 13, and the movable contact component 14 are respectively disposed on the base 10. The connecting component 12 is disposed on one side of the electromagnetic coil group 11 to operate in response to the driving state of the electromagnetic coil group 11. The non-polarity snap-action electromagnetic relay 1 is characterized in that the fixed contact assembly 13 has two fixed conductive plates 131, a first fixed contact 1321, and a second fixed contact 1322. The two fixed conductive plates 131 are symmetrically arranged and one end of each extends outside the base 10. The first fixed contact 1321 and the second fixed contact 1322 are respectively disposed on the fixed conductive plates 131. The movable contact assembly 14 has a movable spring 141, a first movable contact 1421, and a second movable contact 1422. The movable spring 141 has a space formed by extending inward from one end. The first movable contact 1421 and the second movable contact 1422 are respectively disposed on the movable spring 141 and located on both sides of the gap, corresponding to the first fixed contact 1321 and the second fixed contact 1322. The movable spring 141 has a connecting section 1411 at the opposite end where the first movable contact 1421 and the second movable contact 1422 are disposed. The connecting section 1411 is moved by the connecting component 12, thereby allowing the first movable contact 1421 and the second movable contact 1422 to contact or separate from the first fixed contact 1321 and the second fixed contact 1322. The base 10 of the non-polarized snap-action electromagnetic relay also has a blocking block 16, which is located between the two fixed conductive plates 131. The movable spring plate 141 spans the blocking block 16, so that the first movable contact 1421 and the second movable contact 1422 are positioned on both sides of the blocking block 16. The blocking block 16 contains an arc-inducing magnet 15, thereby achieving arc-extinguishing efficiency. The arc during operation is attenuated by the blocking block 16 and the arc-inducing magnet 15, further achieving an arc-extinguishing effect. (See reference...) Figure 1CAs shown, when the second movable contact 1422 and the second fixed contact 1322 are separated or in contact, Figure 1C Represented as mutually separated, the generated electric arc (at Figure 1C The arc (represented by an arc) is attracted to the position of the blocking block 16 by the action of the blocking block 16 and the arc-inducing magnet 15. Simultaneously, the aforementioned connection features make the arc-inducing magnet 15 and the blocking block 16 form an almost integral structure, which further helps to isolate and eliminate the arc. Specifically, the bottom surface of the blocking block 16 may be provided with a receiving groove 161 for accommodating the arc-inducing magnet 15. Preferably, the base 10 may have an asymmetrical structure, so that the area where the blocking block 16 is located (i.e., the area where the base 10 is located...) Figure 1A The depth of the front side shown is slightly greater than the area where the electromagnetic coil assembly 11 is located (that is, the base 10 is located at...). Figure 1A The depth of the rear side (as shown) is reduced to better reduce the overall volume of the non-polarized snap-fit ​​electromagnetic relay 1 by reducing the height of the rear side region of the base 10.

[0035] Through the above structure, the non-polarized snap-action electromagnetic relay 1 can achieve the function of "non-polarity". The "non-polarity" mentioned here means that it is not necessary to consider positive and negative polarity and two electrodes can be arbitrarily connected to perform electrical conduction to perform charging or discharging operation. When the structure of the non-polarized snap-action electromagnetic relay 1 is limited by the above-mentioned characteristic conditions, the parts of the two fixed conductive plates 131 extending outside the base 10 can be arbitrarily assembled and fixed with the electrodes to be connected. Regardless of the direction of current conduction, the arc generated by the non-polarized snap-action electromagnetic relay 1 during operation can be successfully extinguished by the blocking block 16 and the arc-inducing magnet 15 inside, effectively changing the unidirectional current application mode of the existing snap-action electromagnetic relay and preventing the arc generated by reverse current conduction from damaging the relay.

[0036] More specifically, participants Figure 5A and Figure 5B As shown, the arc-inducing magnet 15 has opposing N and S poles. When current flows from the first movable contact 1421 towards the first fixed contact 1321, and the first fixed contact 1321 and the first movable contact 1421 are close to the N pole of the arc-inducing magnet 15 and away from the S pole of the arc-inducing magnet 15, the arc-inducing magnet 15 guides the arc to stretch the arc towards the movable spring 141. Then, on the other side, current flows from the second fixed contact 1322 towards the second movable contact 1422. The second fixed contact 1322 and the second movable contact 1422 are close to the S pole of the arc-inducing magnet 15 and away from the N pole of the arc-inducing magnet 15, and the arc-inducing magnet 15 stretches the arc so that the arc contacts the base 10 and extinguishes the arc. Figure 5AAs shown. Alternatively, when current flows from the first fixed contact 1321 towards the first movable contact 1421, and the first fixed contact 1321 and the first movable contact 1421 are close to the S pole of the arc-inducing magnet 15 and away from the N pole of the arc-inducing magnet 15, the arc-inducing magnet 15 guides the arc to stretch the arc towards the movable spring 141. Then, on the other side, current flows from the second movable contact 1422 towards the second fixed contact 1322, and the second fixed contact 1322 and the second movable contact 1422 are close to the N pole of the arc-inducing magnet 15 and away from the S pole of the arc-inducing magnet 15. The arc-inducing magnet 15 stretches the arc so that the arc contacts the base 10 and extinguishes the arc. Figure 5B As shown.

[0037] This structural configuration allows the electric arc to flow as much as possible towards the movable spring 141. The blocking block 16 serves to prevent arcs from moving in the aforementioned direction. An electric arc, essentially like lightning, will, in principle, radiate arbitrarily without any structural influence. To address this phenomenon and effectively extinguish the arc, the non-polarized snap-action electromagnetic relay 1 uses the blocking block 16 and the arc-inducing magnet 15 within its basic structure to guide and extinguish the arc. Furthermore, when the non-polarized snap-action electromagnetic relay 1 is configured as described above, it has the effect of directing the arc towards the movable spring 141, thereby extinguishing the arc. Figure 5A and Figure 5B The N and S marked in the figure represent the N and S pole positions of the arc-inducing magnet 15.

[0038] See Figure 6A and Figure 6B As shown, when current flows from the second movable contact 1422 towards the second fixed contact 1322, and the second fixed contact 1322 and the second movable contact 1422 are close to the S pole of the arc-inducing magnet 15 and away from the N pole of the arc-inducing magnet 15, the arc-inducing magnet 15 guides the arc to stretch the arc towards the movable spring 141. Then, on the other side, current flows from the first fixed contact 1321 towards the first movable contact 1421, and the first fixed contact 1321 and the first movable contact 1421 are close to the N pole of the arc-inducing magnet 15 and away from the S pole of the arc-inducing magnet 15. The arc-inducing magnet 15 stretches the arc so that the arc contacts the base 10 and extinguishes the arc. Figure 6AAs shown. Alternatively, when current flows from the second fixed contact 1322 towards the second movable contact 1422, and the second fixed contact 1322 and the second movable contact 1422 are close to the N pole of the arc-inducing magnet 15 and away from the S pole of the arc-inducing magnet 15, the arc-inducing magnet 15 guides the arc to stretch the arc towards the movable spring 141. Then, on the other side, current flows from the first movable contact 1421 towards the first fixed contact 1321, and the first fixed contact 1321 and the first movable contact 1421 are close to the S pole of the arc-inducing magnet 15 and away from the N pole of the arc-inducing magnet 15. The arc-inducing magnet 15 stretches the arc so that the arc contacts the base 10 and extinguishes the arc. Figure 6A As shown. In the above structural configuration, the main function is to guide the electric arc towards the movable spring 141, allowing the arc to be guided and extinguished as described later. It also works in conjunction with the blocking block 16 to block and cancel out arcs that are not in the radial direction. Figure 6A and Figure 6B The N and S marked in the figure represent the N and S pole positions of the arc-inducing magnet 15.

[0039] In a preferred embodiment, the movable spring 141 may have an arc-catching portion 1410, which includes a connecting section 1411 and two exposed, unshielded, symmetrically arranged discharge sections 1412. More specifically, the arc-catching portion 1410 can be broadly defined as the area of ​​the movable spring 141 not used for accommodating the first movable contact 1421 and the second movable contact 1422. The portion in this area for connection with the connecting assembly 12 is the connecting section 1411, and the exposed, unshielded sections in this area are the two discharge sections 1412 for attracting an electric arc. In the structural configuration of this embodiment, Figure 1A and Figure 1D For example, the connecting portion 1410 includes the movable spring piece 141 embedded in the connecting section 1411 of the upper connecting assembly 12 (i.e., Figure 1A The area shown in the dashed line in the diagram) and the area exposed above the connecting component 12, which are the two discharge sections 1412 (i.e., Figure 1A and Figure 1DThe portion of the first movable contact 1421 and the second movable contact 1422 exposed on the connecting component 12 and located near the end. Through the arc-connecting portion 1410 and the two discharge sections 1412, when the first movable contact 1421 and the second movable contact 1422 on the left and right sides are separated from the corresponding first fixed contact 1321 and the second fixed contact 1322, the arc is still conducting and not de-energized. A high electric field is formed around the two discharge sections 1412, causing them to become ionized. The ionized air is conductive, causing a discharge phenomenon around the discharge sections 1412 and attracting the arc. The arc-initiating magnet 15 guides the arc towards the arc-connecting portion 1410, stretching the arc and reducing its energy density. The two discharge sections 1412 on the arc-connecting portion 1410 then attract the stretched arc. Figure 1D As shown by the arc in the middle, Figure 1D The arrow located below the arc indicates the direction of the magnetic field, thus allowing the arc receiving part 1410 to receive arc energy and extinguish the arc. Accordingly, this invention achieves the following: lightning is essentially an electric arc. The lightning rod's tip discharge effect attracts lightning strikes, preventing damage to surrounding objects. The arc-inducing magnet 15 within the relay guides the arc towards the arc receiving part 1410, stretching the arc and reducing its energy density. The two discharge sections 1412 on the arc receiving part 1410 attract the stretched arc, allowing the arc receiving part 1410 to receive arc energy (e.g., heat energy) and extinguish the arc. The lightning rod's tip discharge effect attracts the arc, preventing damage to surrounding objects within the relay.

[0040] Furthermore, preferably, in one embodiment, the base 10 also has two magnetic element assembly portions 101, which are symmetrically arranged around the blocking block 16 and located on opposite sides of the first fixed contact 1321 and the second fixed contact 1322. Each magnetic element assembly portion 101 has a magnet 102, wherein the magnet 102 is arranged in the same direction as the magnetic poles of the arc-inducing magnet 15, so that the magnet 102 and the arc-inducing magnet 15 are in a state where adjacent magnetic poles are oppositely attracted. Figures 7-8BAs shown. Accordingly, the strength of the magnetic force can be increased, and the overall magnetic field distribution will be more stable, thus effectively improving the arc-starting effect. In addition, in this structural form, the magnets 102 on both sides, the arc-starting magnet 15 located in the center, and even the magnets 102 on both sides can all be made of magnetic components with weaker magnetic force, thereby effectively reducing the cost of the required components while still maintaining excellent arc-starting effect. More specifically, each magnetic component assembly 101 is a protrusion structure, and its height can be approximately equal to that of the blocking block 16. Each magnetic component assembly 101 has a set of slots 1011, and the openings of the set of slots 1011 are opened on the bottom surface of the base 10, so that the two magnets 102 can be respectively placed in the two magnetic component assembly 101 from the bottom side of the base 10. For example, when the first movable contact 1421 and the first fixed contact 1321 are located near the N pole of the arc-inducing magnet 15, the side of the magnet 102 near the first movable contact 1421 and the first fixed contact 1321 that is closer to the N pole of the arc-inducing magnet 15 will be the S pole, and the opposite side will be the N pole. Similarly, the side of the magnet 102 near the second movable contact 1422 and the second fixed contact 1322 that is closer to the S pole of the arc-inducing magnet 15 will be the N pole, and the opposite side will be the S pole. Thus, the magnet 102 exhibits the same magnetic pole orientation as the arc-inducing magnet 15. Figure 8A As shown, where Figure 8A The N and S indicated in the text represent the N and S pole positions of the arc-inducing magnet 15 and the magnet 102, respectively. Alternatively, as... Figure 8B As shown, when the second movable contact 1422 and the second fixed contact 1322 are arranged near the N pole of the arc-inducing magnet 15, the side of the magnet 102 near the first movable contact 1421 and the first fixed contact 1321 that is closer to the S pole of the arc-inducing magnet 15 will be the N pole, and the opposite side will be the S pole. Similarly, the side of the magnet 102 near the second movable contact 1422 and the second fixed contact 1322 that is closer to the N pole of the arc-inducing magnet 15 will be the S pole, and the opposite side will be the N pole. Thus, the magnet 102 exhibits the same magnetic pole orientation as the arc-inducing magnet 15. Figure 8B The N and S indicated in the figure represent the N and S pole positions of the arc-inducing magnet 15 and the magnet 102, respectively.

[0041] In addition, the blocking block 16 also has a double-sided energy absorption section 160, which includes a first absorption surface 1601 and a second absorption surface 1602. The first absorption surface 1601 and the second absorption surface 1602 are arranged opposite to each other to absorb the arc heat energy respectively, and the first absorption surface 1601 and the second absorption surface 1602 are made of non-magnetic polymer. Through the double-sided energy absorption section 160, the heat energy brought by the arc towards the arc receiving part 1410 after touching the first absorption surface 1601 or the second absorption surface 1602 can be partially absorbed to reduce the damaging effect of the arc on the relay. Then, the arc energy (e.g., heat energy) is received by the arc receiving part 1410 to extinguish the arc.

[0042] Preferably, the blocking block 16 has a base 162 and a protrusion 163. The base 162 may be a rectangular structure, and the protrusion 163 is generally L-shaped and protrudes from the front and top sides of the base 162, preferably from the center of the base 162. The arc-inducing magnet 161 is located within the base 162, wherein the minimum vertical distance between the edges of the first movable contact 1421 and the second movable contact 1422 and the first fixed contact 1321 and the second fixed contact 1322 and the arc-inducing magnet 15 is 3-11 mm. Figure 3The minimum vertical distance between the edges of the two fixed contacts 132 and the arc-inducing magnet 15 is indicated by A. Regarding the blocking block 16, considering the placement of the arc-inducing magnet 15 and the goal of achieving "non-polarity" application, the blocking block 16 has a structure with a base 162 and a protrusion 163. Firstly, by making the protrusion 163 protrude from the base 162, the effective area of ​​the blocking block 16 can be expanded, which is more conducive to blocking the electric arc generated during operation and ensuring the arc interruption and elimination function. Secondly, by using the base 162 structure to accommodate the arc-inducing magnet 15, the space of the base 10 can be used more efficiently, without needing to reserve additional space in the base 10 to accommodate the placement of the arc-inducing magnet 15 between the two fixed conductive plates 131, thus avoiding the complexity and inconvenience in production. Regarding the spacing between the edges of the first movable contact 1421 and the second movable contact 1422 and the edges of the first fixed contact 1321 and the second fixed contact 1322 and the arc-inducing magnet 15, the present invention also proposes preferred dimensional conditions, such that when the minimum vertical distance between the first movable contact 1421 and the second movable contact 1422 and the edges of the first fixed contact 1321 and the second fixed contact 1322 and the arc-inducing magnet 15 is between 3 and 11 mm, a better arc-blowing effect can be formed. Considering the application scope of the non-polarized snap-action electromagnetic relay 1 and the development trend and market demand for relay miniaturization, a better structure must be planned within the limited space. Therefore, to ensure the arc-blowing strength and accuracy of the arc-initiating magnet 15, when the minimum vertical distance A between the first movable contact 1421 and the second movable contact 1422 and the first fixed contact 1321 and the second fixed contact 1322 and the arc-blowing magnet 15 is between 3 and 11 mm, the purpose of setting up the arc-blowing magnet 15 with high-efficiency arc-blowing performance in a limited space can be achieved. This allows the arc generated by the non-polarized snap-action electromagnetic relay 1, regardless of the direction of current conduction, to be guided to the position of the blocking block 16 by the arc-blowing magnet 15, thereby preventing damage and negative effects caused by the arc and meeting the requirements of miniaturization. Furthermore, when the double-sided energy absorption section 160 is present, the double-sided energy absorption section 160 can be a partial structure of the base 162, that is, located on the base 162, or it can be a structural block different from the base 162.

[0043] In addition, such as Figure 2A and Figure 2B As shown, in order to further enhance the arc blocking and extinguishing efficiency, and considering the overall size of the base 10, the rear side of the base 162 can have an extension 164, and the thickness of the extension 164 is equal to the thickness of the protrusion 161, so as to expand the effective area of ​​the blocking block 16, thereby enabling it to have both arc extinguishing efficiency and meet the miniaturization requirements of the market.

[0044] For a better example of structural dimensions, please refer to Figure 2B and Figure 3 As shown, the maximum thickness T1 of the barrier block 16 is 5-10 mm, the maximum height H1 of the barrier block 16 is 19-27 mm, and the maximum length L1 of the barrier block 16 is 10.5-17 mm; the minimum distance D1 between the edge of the first fixed contact 1321 and the second fixed contact 1322 and the barrier block 16 is 1-10 mm, and the minimum distance D2 between the edge of the first fixed contact 1321 and the second fixed contact 1322 and the base 10 is 2.9-15 mm.

[0045] Given the structure of the blocking block 16 having the base 162 and the protrusion 163, regarding further dimensional limitations of the blocking block 16, the inventors propose a preferred embodiment in which the thickness T2 of the protrusion 163 is 1-3 mm, the protrusion height H2 of the protrusion 163 on the top side of the base 162 is 4-6 mm, and the length L2 of the protrusion 163 is 7-10 mm. By using the above dimensional range, the blocking block 16 can maintain its miniaturization advantage while expanding its effective area, while also saving material and making the structural configuration of the non-polarized snap-fit ​​electromagnetic relay 1 more flexible and appropriate. Preferably, the thickness T2 of the protrusion 163 can be, for example, 2 mm, the protrusion height H2 of the protrusion 163 on the top side of the base 162 can be, for example, 5.5 mm, and the length L2 of the protrusion 163 can be, for example, 8.5 mm.

[0046] In practice, the non-polarized snap-action electromagnetic relay 1 can be applied to a power range of 600V DC and 10-50A, and achieves the effect of interrupting and extinguishing electric arc through the above-mentioned structural features. The present invention also proposes a preferred size constraint, such that the minimum distance D1 between the edges of the first fixed contact 1321 and the second fixed contact 1322 and the blocking block 16 is 5.5-6 mm, for example 5.8 mm; the maximum thickness T1 of the blocking block 16 can be 8-8.5 mm, for example 8.4 mm; the maximum height H1 of the blocking block 16 can be 25.5-26 mm, for example 25.9 mm; the maximum length L1 of the blocking block 16 can be 15.5-16.5 mm, for example 16.1 mm; and the minimum perpendicular distance A between the edges of the first movable contact 1421 and the second movable contact 1422 and the edges of the first fixed contact 1321 and the second fixed contact 1322 and the arc-inducing magnet 15 is 3.5-4.5 mm, for example 4.2 mm. When the non-polarity snap-action electromagnetic relay 1 is within the aforementioned size and specifications, it not only meets the market demand for miniaturization, but also achieves the function of blowing an arc through the arc-inducing magnet 15 located between the two fixed conductive plates 141 during operation within a limited installation space, and interrupting and extinguishing the arc through the special structure of the blocking block 16, so that the electromagnetic relay can achieve the application of "non-polarity".

[0047] Since the intensity and direction of the electric arc energy generated during operation are closely related to the overall structure of the relay, the arc-extinguishing structure must be designed according to the relay structure in order to successfully interrupt and extinguish the arc. Furthermore, it is even better to consider the dimensional parameters between the arc-generating structures, such as the movable contact assembly 14 and the fixed contact assembly 13. The non-polarity snap-action electromagnetic relay 1 of this invention, after meeting the dimensional and structural conditions described above, can more reliably achieve the purpose and effect of interrupting the arc and preventing it from damaging the relay. In other words, the dimensional conditions further proposed in this invention are not technical features that can be easily conceived by those skilled in the art through existing relay technologies, but rather have specific limiting significance.

[0048] Furthermore, this non-polarity snap-action electromagnetic relay 1 can also be applied to applications requiring high current transmission. In this case, the diameters of the first fixed contact 1321 and the second fixed contact 1322 can be 2-5 mm to facilitate carrying a larger current. Preferably, the diameters of the first fixed contact 1321 and the second fixed contact 1322 can be 3.5 mm. In addition, the material of the blocking block 16 can be made of organic or inorganic polymer materials, such as nylon, LCP (liquid crystal polymer), silicon dioxide, thermally conductive plastics, etc.

[0049] Regarding the connecting component 12, such as Figure 1A and Figure 4 As shown, in a preferred application, it includes a bracket 121, an elastic element 122, a magnetic element 123, and a fixing element 124. The bracket 121 is disposed on the electromagnetic coil assembly 11. One end of the elastic element 122 is fixed to the bracket 121, and the other end is fixed to the magnetic element 123. The fixing element 124 is disposed on the magnetic element 123, and the connecting section 1411 of the movable elastic piece 141 is disposed on the fixing element 124. When the electromagnetic coil assembly 11 generates magnetic force, the magnetic element 123 is attracted by the electromagnetic coil assembly 123. The magnetic attraction 123 pulls the fixing member 124, causing the first movable contact 1421 and the second movable contact 1422 to contact the first fixed contact 1321 and the second fixed contact 1322, while simultaneously applying force to the elastic member 122. When the electromagnetic coil assembly 11 does not generate magnetic force, the magnetic attractor 123 and the fixing member 124 are reset by the force of the elastic member 122, causing the first movable contact 1421 and the second movable contact 1422 to separate from the first fixed contact 1321 and the second fixed contact 1322. This structure facilitates the stable movement of the movable contact assembly 14, making the contact or separation of the first movable contact 1421 and the second movable contact 1422 with the first fixed contact 1321 and the second fixed contact 1322 more reliable, thus improving the application efficiency of the non-polarized snap-action electromagnetic relay 1. Depending on the application or manufacturing requirements, the elastic element 122 can be a spring or a sheet. In this embodiment, the elastic element 122 is taken as a sheet, so that the elasticity of the sheet can be used to achieve the effect of the magnetic attractor 123 driving the movable contact assembly 14 to reset.

[0050] In summary, the non-polarity snap-action electromagnetic relay of the present invention utilizes the structural features of the blocking block and the arc-inducing magnet to achieve the special effect of "non-polarity" application. To reiterate, "non-polarity" means that the non-polarity snap-action electromagnetic relay of the present invention does not need to consider positive and negative polarity to electrically conduct with both electrodes to perform charging or discharging operations. That is, after the non-polarity snap-action electromagnetic relay is electrically connected with the electrodes, regardless of the direction of current conduction, it can effectively interrupt the arc generated during operation, which is fundamentally different from previous electromagnetic relays that only allowed a single direction of current conduction. Especially in the field of snap-action relays, because a snap-action action must be formed, the basic design of the relay structure is greatly limited, and the margin available for planning and setting arc-extinguishing structures is also significantly reduced. Therefore, existing snap-action relays can only be designed to extinguish arcs generated under unidirectional current conduction. However, given the increasing prevalence of bidirectional current conduction applications, particularly in electric vehicles and solar energy storage systems, electromagnetic relays are required to perform both charging and discharging. Therefore, these relays must operate stably and safely under bidirectional current conduction. Based on this, the inventor conceived and, through continuous design and adjustment, proposed a relay structure with a specific design and further limitations on dimensions or arc-inducing magnet settings. This structure can effectively interrupt and extinguish arcs under both charging and discharging current conduction, achieving a "non-polarity" application. Finally, this invention achieves another objective: since lightning is essentially an electric arc, and lightning conductors utilize their tip discharge effect to attract and strike the arc, preventing damage to surrounding objects, this invention uses the arc-inducing magnet on the relay to guide the arc towards the arc-receiving section, stretching the arc and reducing its energy density. Then, the discharge section on the arc-receiving section attracts the stretched arc, allowing the arc-receiving section to receive arc energy (e.g., heat energy) and extinguish the arc, preventing damage to surrounding objects within the relay.

[0051] The above description is merely an illustration of preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention based on the content of these embodiments; therefore, any textual changes or modifications made without departing from the equivalent scope of the present invention should still be covered within the scope of the claims of the present invention.

Claims

1. A non-polarity snap type electromagnetic relay capable of connecting two electrodes arbitrarily for electric conduction to perform charging or discharging operation without considering positive or negative polarity, the non-polarity snap type electromagnetic relay having a base, an electromagnetic coil set, a linkage assembly, a fixed contact assembly and a movable contact assembly, the electromagnetic coil set, the linkage assembly, the fixed contact assembly and the movable contact assembly being respectively arranged in the base; the linkage assembly being arranged at one side of the electromagnetic coil set to act in response to the driving state of the electromagnetic coil set, characterized in that: the fixed contact assembly has two fixed conductive sheets, a first fixed contact and a second fixed contact, the two fixed conductive sheets being symmetrically arranged and one end of each of the two fixed conductive sheets extending to outside of the base, the first fixed contact being arranged on any one of the fixed conductive sheets, and the second fixed contact being arranged on the other fixed conductive sheet; the movable contact assembly includes a movable contact piece, a first movable contact and a second movable contact, the movable contact piece having a gap formed by extending inward from one end of the movable contact piece, the first movable contact and the second movable contact being respectively arranged on the movable contact piece and located at two sides of the gap and corresponding to the first fixed contact and the second fixed contact, the movable contact piece having a connecting section at the opposite end of the movable contact piece where the first movable contact and the second movable contact are arranged, the connecting section being connected with the linkage assembly, so that the first movable contact and the second movable contact are in contact with or separated from the first fixed contact and the second fixed contact; the base further has a blocking block, the blocking block being located between the two fixed conductive sheets, and the movable contact piece being arranged across the blocking block so that the first movable contact and the second movable contact are both arranged on the two sides of the blocking block, wherein the blocking block has an arc striking magnet therein; wherein the arc striking magnet has opposite N-pole and S-pole, when current flows from the first movable contact to the first fixed contact, and the first fixed contact and the first movable contact are close to the N-pole of the arc striking magnet and away from the magnetic field of the S-pole of the arc striking magnet, or when current flows from the first fixed contact to the first movable contact, and the first fixed contact and the first movable contact are close to the S-pole of the arc striking magnet and away from the magnetic field of the N-pole of the arc striking magnet, the arc striking magnet guides the electric arc to stretch the electric arc in the direction of the movable contact piece; the movable contact piece has an arc receiving portion, the arc receiving portion including the connecting section and two arc discharge sections symmetrically arranged, the two arc discharge sections attracting the electric arc, the electric arc being stretched in the direction of the arc receiving portion by the arc striking magnet to reduce the energy density of the electric arc, and the stretched electric arc being attracted by the two arc discharge sections on the arc receiving portion, so that the arc receiving portion receives the energy of the electric arc to extinguish the electric arc; the base further has two magnetic element arrangement portions, the two magnetic element arrangement portions being symmetrically arranged with the blocking block as the center and located on opposite sides of the first fixed contact and the second fixed contact, and each of the magnetic element arrangement portions having a magnet therein, wherein the magnet is arranged in the same direction as the arrangement direction of the magnetic poles of the arc striking magnet.

2. The pole-neutral snap-action electromagnetic relay according to claim 1, characterized in that, The barrier block further has a double-sided energy absorption portion, which includes a first absorption surface and a second absorption surface. The first absorption surface and the second absorption surface are oppositely arranged to respectively absorb arc heat energy. The first absorption surface and the second absorption surface are non-magnetic polymers.

3. The pole-neutral snap-action electromagnetic relay according to any one of claims 1 to 2, characterized in that The barrier block has a base and a protruding portion. The protruding portion is substantially L-shaped and protrudes from the front side and the top side of the base. The thickness of the protruding portion is less than that of the base. The minimum vertical distance between the edges of the first movable contact and the second movable contact and the first fixed contact and the second fixed contact and the arc striking magnet is 3-11 mm.

4. The pole-neutral snap-action electromagnetic relay according to claim 3, wherein The minimum distance D1 between the edges of the first fixed contact and the second fixed contact and the barrier block is 1-10 mm. The minimum distance D2 between the edges of the first fixed contact and the second fixed contact and the base is 2.9-15 mm.

5. The pole-neutral snap-action electromagnetic relay according to claim 4, wherein The adapter assembly has a bracket, a resilient member, a magnetic member, and a fixing member. One end of the resilient member is fixed to the bracket, and the other end is fixed to the magnetic member. The fixing member is arranged on the magnetic member, and the connection section of the movable contact is arranged on the fixing member. When the electromagnetic coil set generates a magnetic force, the magnetic member is attracted by the electromagnetic coil set to drive the fixing member, so that the first movable contact and the second movable contact are in contact with the first fixed contact and the second fixed contact, and the resilient member is forced. When the electromagnetic coil set does not generate a magnetic force, the magnetic member and the fixing member are reset by the force of the resilient member to separate the first movable contact and the second movable contact from the first fixed contact and the second fixed contact.

6. A non-polarity clapping type electromagnetic relay capable of connecting two electrodes for electrical conduction to perform charging or discharging operation without considering positive and negative polarities. The non-polarity clapping type electromagnetic relay has a base, an electromagnetic coil set, an adapter assembly, a fixed contact assembly, and a movable contact assembly. The electromagnetic coil set, the adapter assembly, the fixed contact assembly, and the movable contact assembly are arranged on the base. The adapter assembly is arranged on one side of the electromagnetic coil set to act according to the driving state of the electromagnetic coil set. The fixed contact assembly has two fixed conductive pieces, a first fixed contact and a second fixed contact, the two fixed conductive pieces are symmetrically arranged and one end of each of the two fixed conductive pieces extends to the outside of the base, the first fixed contact is arranged on any one of the fixed conductive pieces, and the second fixed contact is arranged on the other fixed conductive piece; the movable contact assembly includes a movable contact piece, a first movable contact and a second movable contact, the movable contact piece has a gap formed by extending inward from one end of the movable contact piece, the first movable contact and the second movable contact are arranged on the movable contact piece and located on both sides of the gap and correspond to the first fixed contact and the second fixed contact, the movable contact piece has a connecting section at the opposite end where the first movable contact and the second movable contact are arranged, the connecting section is connected with the connecting assembly, so that the first movable contact and the second movable contact are in contact or separated from the first fixed contact and the second fixed contact; the base also has a blocking block, the blocking block is located between the two fixed conductive pieces, and the movable contact piece is arranged across the blocking block so that the first movable contact and the second movable contact are arranged on both sides of the blocking block, wherein the blocking block has an arc striking magnet inside; The arc striking magnet has opposite N and S poles, when the current flows from the second movable contact to the second fixed contact, and the second fixed contact and the second movable contact are close to the S pole of the arc striking magnet and away from the magnetic field of the N pole of the arc striking magnet, or when the current flows from the second fixed contact to the second movable contact, and the second fixed contact and the second movable contact are close to the N pole of the arc striking magnet and away from the magnetic field of the S pole of the arc striking magnet, the arc striking magnet guides the arc to stretch the arc in the direction of the movable contact piece; The movable contact piece has an arc receiving part, the arc receiving part has two discharge sections arranged symmetrically, the two discharge sections attract the arc, the arc energy density is reduced by the arc striking magnet guiding the arc to stretch the arc in the direction of the arc receiving part, and the stretched arc is attracted by the two discharge sections on the arc receiving part, so that the arc receiving part receives the arc energy to extinguish the arc; The base also has two magnetic element arrangement parts, the two magnetic element arrangement parts are symmetrically arranged with the blocking block as the center and located on opposite sides of the first fixed contact and the second fixed contact, and each of the two magnetic element arrangement parts has a magnet inside, wherein the magnet is arranged in the same direction as the magnetic pole of the arc striking magnet.

7. The pole-neutral snap-action electromagnetic relay according to claim 6, characterized in that, The blocking block also has a double-sided energy absorbing part, the double-sided energy absorbing part includes a first absorbing surface and a second absorbing surface, the first absorbing surface and the second absorbing surface are arranged opposite to each other to absorb arc heat energy, wherein the first absorbing surface and the second absorbing surface are non-magnetic polymers.

8. An electromagnetic relay of the poleless snap-action type according to any one of claims 6 to 7, characterized in that, The blocking block has a base and a protruding part, the protruding part is generally L-shaped and protrudes on the front side and top side of the base, the thickness of the protruding part is less than that of the base, wherein the minimum vertical distance between the edges of the first movable contact, the second movable contact, the first fixed contact and the second fixed contact and the arc striking magnet is 3-11 mm.

9. The pole-wiping clapper-type electromagnetic relay as recited in claim 8, wherein The minimum distance D1 between the edge of the first fixed contact and the second fixed contact and the blocking block is 1-10 mm, and the minimum distance D2 between the edge of the first fixed contact and the second fixed contact and the base is 2.9-15 mm.

10. The pole-wiping clapper-type electromagnetic relay as recited in claim 9, wherein The adapter assembly has a bracket, a resilient member, a magnetic member and a fixing member. The bracket is connected to the electromagnetic coil set. One end of the resilient member is fixed to the bracket, and the other end is fixed to the magnetic member. The fixing member is arranged on the magnetic member, and the connection section of the movable contact is arranged on the fixing member. When the electromagnetic coil set generates a magnetic force, the magnetic member is attracted by the electromagnetic coil set to drive the fixing member, so that the first movable contact and the second movable contact are in contact with the first fixed contact and the second fixed contact, and the resilient member is forced. When the electromagnetic coil set does not generate a magnetic force, the magnetic member and the fixing member are reset by the force of the resilient member, so that the first movable contact and the second movable contact are separated from the first fixed contact and the second fixed contact.

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