A high-power electromagnetic relay structure

Abstract

This invention discloses a high-power electromagnetic relay structure, including a magnetic circuit structure, an armature assembly, a moving contact assembly, and a stationary contact assembly disposed on a base. The moving contact assembly includes two moving contacts spaced apart vertically. A slot structure is provided on one side of the base. The stationary contact assembly includes a mounting plate and a first stationary contact piece and a second stationary contact piece positioned on the mounting plate. The first and second stationary contact pieces have two stationary contacts corresponding to the two moving contacts. The first and second stationary contact pieces are tightly fitted into the slot structure under the action of the mounting plate. Using this technical solution, the two stationary contact pieces and the mounting plate can be pre-assembled into an integral structure, thereby realizing the overall installation of the stationary contact assembly on the base. The installation structure is simple and the installation is convenient and quick. This design is conducive to achieving the modular and integrated installation of this relay product, improving installation efficiency, and reducing production costs.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more specifically to a high-power electromagnetic relay structure. Background Technology

[0002] An electromagnetic relay is an electronic control device that essentially acts as an "automatic switch," using a smaller current and lower voltage to control a larger current and higher voltage. Therefore, it plays a role in circuits such as automatic adjustment, safety protection, and circuit switching. With the rapid development of the new energy industry, higher demands are being placed on the power of power distribution circuits. Traditional power distribution circuits with capacities below 220VAC to 400VAC / 50A can no longer meet the needs of societal development, making the development of high-power electromagnetic relays a future requirement.

[0003] For example, Chinese patent document CN108305818B discloses a high-power, high-insulation relay, including a base, coil, iron core, armature part, yoke, moving spring, and stationary spring; the coil, iron core, and yoke cooperate with each other and are mounted on the base; the armature part consists of an armature as one side of the armature part, a connecting piece as one side of the armature part, and a plastic part, the armature and the connecting piece are respectively connected to the plastic part, and the armature and the connecting piece are insulated and isolated within the plastic part; the moving spring includes a moving spring sheet with two moving contacts, and the stationary spring includes two stationary spring sheets with stationary contacts respectively, the stationary spring sheet consists of a first connecting part for fixing the stationary contacts and a second connecting part as a lead-out foot, and a bent part connecting the first connecting part and the second connecting part, and protrusions are provided on both sides of the first connecting part. This stationary spring sheet is inserted into the slot of the base from the outside of the base plate upwards, the bent part is outside the base plate, and the stationary spring sheet is fixed on the base by the interference fit between the protrusions on both sides and the slot.

[0004] From the structure of the electromagnetic relay described above, the following problems still exist: 1. The two stationary springs with this bent shape design have a complex structure, requiring the bent part to be outside the base plate. Therefore, they must be inserted into the base from outside the base plate, often requiring the base to be flipped to adjust the installation posture to meet assembly requirements. This makes installation inconvenient, inefficient, and detrimental to the trend of modular installation of relays; 2. Although the bent part of the stationary spring generates electrodynamic force through the current, which can lengthen the arc to accelerate its extinction, the ability to extinguish the arc by electrodynamic repulsion alone is limited, and the arc extinguishing effect is not good. In the long-term use, it is still easy to cause burning or even damage to the contacts and insulation materials, affecting the product's service life and safety. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the problem that the static spring structure design of the electromagnetic relay in the prior art is complicated, the installation is inconvenient, and it is not conducive to the development of the relay towards modular installation. Therefore, the present invention provides a high-power electromagnetic relay structure that enables the static contact component to be installed as a whole, which is convenient and quick to install and is conducive to the realization of modular and integrated installation.

[0006] To address the aforementioned problems, this invention provides a high-power electromagnetic relay structure, including a base and a magnetic circuit structure, an armature assembly, and a contact structure disposed on the base. The armature assembly is oscillatingly connected to the magnetic circuit structure. A slot structure extends along the length of the base on one side. The contact structure includes:

[0007] The movable contact assembly includes a movable contact piece that is linked to the armature assembly, and two movable contacts that are spaced apart vertically from the movable contact piece;

[0008] The stationary contact assembly includes a mounting plate inserted into the slot structure, a first stationary contact piece and a second stationary contact piece disposed on the mounting plate by a positioning structure, and a protrusion structure formed on the mounting plate and spaced between the first stationary contact piece and the second stationary contact piece. The first stationary contact piece and the second stationary contact piece are provided with two stationary contacts corresponding to two moving contacts at a distance from each other. The first stationary contact piece and the second stationary contact piece are tightly fitted into the slot structure under the drive of the mounting plate. The armature assembly is driven by the magnetic circuit structure to reciprocate and swing, thereby causing the two moving contacts of the moving contact piece to contact or separate from the two stationary contacts.

[0009] In the above-mentioned high-power electromagnetic relay structure, the positioning structure includes at least one positioning block on the mounting plate on both sides of the protruding structure, and at least one positioning hole respectively provided on the first stationary contact piece and the second stationary contact piece, wherein the positioning block is tightly fitted and abutted in the positioning hole.

[0010] In the above-mentioned high-power electromagnetic relay structure, the protruding structure is integrally formed in a U-shape on the mounting plate and extends to the upper and lower sides of the mounting plate; a concave groove is provided on the protruding structure along its outline shape.

[0011] In the above-described high-power electromagnetic relay structure, the slot structure has a slot on the side facing the moving contact, and the two stationary contacts are accommodated in the slot; the first stationary contact includes a first end extending out of the side of the mounting plate, and one of the stationary contacts is provided on the first end; the second stationary contact includes a second end disposed in a U-shaped groove formed by the protruding structure, and another stationary contact is provided on the second end, and is vertically spaced from the first end.

[0012] In the above-mentioned high-power electromagnetic relay structure, the bottom of the slot structure is provided with two limiting holes that extend to the bottom of the base, and a limiting boss formed between the two limiting holes; the first stationary contact piece and the second stationary contact piece have two limiting pins that are respectively inserted into the two limiting holes, and the lower side of the mounting plate is provided with a limiting recess that engages with the limiting boss.

[0013] In the above-described high-power electromagnetic relay structure, the magnetic circuit structure is horizontally mounted on the base along the length of the base, and is fixed in relative position to the base by the mounting structure.

[0014] In the above-described high-power electromagnetic relay structure, the magnetic circuit structure includes a coil component and a yoke, as well as a reed structure disposed between the yoke and the armature assembly. A baffle structure is disposed on the base between the yoke and the moving contact, and the baffle structure is higher than the yoke. The armature assembly has an L-shaped structure and bends over the baffle structure from one end to connect to the moving contact. The armature assembly swings towards the stationary contact assembly under the electromagnetic force generated by the magnetic circuit structure, and swings away from the stationary contact assembly under the drive of the reed structure when the electromagnetic force disappears.

[0015] In the above-mentioned high-power electromagnetic relay structure, the mounting structure includes:

[0016] A first mounting groove is provided on the base along the length of the base, and the coil component is accommodated in the first mounting groove;

[0017] The second mounting groove is connected between the first mounting groove and the baffle structure, and the yoke is accommodated in the second mounting groove;

[0018] The first limiting component includes two mounting guide holes disposed in the first mounting groove and extending to the bottom of the base, and the coil component has two lead wires inserted into the two mounting guide holes;

[0019] The second limiting component includes two first slots that are staggered at both ends of the second mounting groove, at least one slot at the bottom of the second mounting groove, and two first feet formed on the yoke and engaged in the two first slots, and a second foot engaged in the second slot is formed on the bottom edge of the yoke.

[0020] In the above-mentioned high-power electromagnetic relay structure, the armature assembly includes an armature that is oscillatingly disposed on one end of the yoke, and a fixing member that is injection molded on one end of the armature. The fixing member is provided with a connecting piece that is fixedly connected to the moving contact piece. The other end of the armature is disposed opposite to one end of the coil component. A clearance slot is formed at the bend of the armature. The spring structure passes through the clearance slot and is connected between the yoke and the armature, and has a bent spring piece that abuts against the port side of the clearance slot that is close to the fixing member.

[0021] In the above-mentioned high-power electromagnetic relay structure, the reed structure includes an L-shaped insert that is positioned and inserted between the yoke and the baffle structure, and a bent spring formed in the central cavity of the L-shaped insert. Two positioning holes are provided on the two sides of the L-shaped insert, and two positioning pins are correspondingly provided on the yoke and inserted into the two positioning holes. A convex strip structure is formed on one end of the L-shaped insert that is in extrusion contact with the baffle structure, and its other end abuts against the other end of the armature.

[0022] In the above-mentioned high-power electromagnetic relay structure, the base includes an installation gap formed between the baffle structure and the mounting plate, suitable for accommodating the moving and stationary contacts. An arc-extinguishing device is provided in the installation gap on one side of the two moving and stationary contacts. The arc-extinguishing device is a double arc-extinguishing chamber structure with openings facing the contact surface between the two moving and stationary contacts respectively.

[0023] In the above-mentioned high-power electromagnetic relay structure, the arc extinguishing device includes an arc extinguishing chamber shell and two sets of arc extinguishing plate assemblies disposed in the arc extinguishing chamber shell. A T-shaped guide groove is vertically extended on one side of the baffle structure, and a T-shaped guide strip is correspondingly disposed on the arc extinguishing chamber shell and slidably inserted into the T-shaped guide groove.

[0024] The technical solution of the present invention has the following advantages compared with the prior art:

[0025] 1. In the high-power electromagnetic relay structure provided by this invention, the moving contact assembly, armature assembly, and magnetic circuit structure can be assembled together and synchronously installed on the base. When installing the stationary contact assembly, since the stationary contact assembly consists of a first stationary contact piece, a second stationary contact piece, and a mounting plate, the first and second stationary contact pieces are first positioned and assembled on the mounting plate. Then, the mounting plate drives the two stationary contact pieces to be synchronously inserted into the slot structure on one side of the base, thus completing the installation and fixation of the stationary contact assembly on the base, so that the two stationary contacts on the two stationary contact pieces are opposite to the two moving contacts on the moving contact piece. This technical solution allows for... The advantages are that the two stationary contacts and the mounting plate can be pre-assembled into a single structure on the outside of the base, thus achieving an integral installation of the stationary contact assembly on the base. During installation, there is no need to flip or adjust the mounting posture and angle of the base, simplifying the installation structure. Furthermore, the stationary contacts are no longer made into a bent shape, reducing the difficulty of the molding process and facilitating installation. In addition, the magnetic circuit structure and armature assembly are also pre-assembled into a single structure. This design is conducive to achieving the modular and integrated installation of this relay product, thereby facilitating automated production and assembly, improving installation efficiency, and reducing production costs.

[0026] 2. In the high-power electromagnetic relay structure provided by the present invention, a raised structure is provided on the mounting plate to separate the first stationary contact and the second stationary contact. This raised structure is U-shaped and extends to both sides of the mounting plate. A concave groove extending along the contour shape is provided on the raised structure. The two stationary contacts are set lower than the raised structure on the mounting plate. This structural arrangement, through the U-shaped raised structure and the concave groove, can increase the creepage distance between the first stationary contact and the second stationary contact, thereby increasing the electrical clearance between them, avoiding creepage short circuit between the first stationary contact and the second stationary contact, and ensuring the safety of the two stationary contacts when assembled on the mounting plate.

[0027] 3. In the high-power electromagnetic relay structure provided by the present invention, a baffle structure is provided on the base between the yoke and the moving contact. The baffle structure is set higher than the yoke. The advantage of this design is that the baffle structure insulates and separates the yoke and the moving contact, increases the creepage distance between them, and ensures that there is a sufficient safe electrical clearance between the yoke and the moving contact.

[0028] 4. In the high-power electromagnetic relay structure provided by this invention, a spring structure is provided between the yoke and the armature assembly. The function of the spring structure is to drive the armature assembly to swing away from the stationary contact assembly when the electromagnetic force disappears, thereby realizing the automatic reset function of the armature assembly. This spring structure consists of an L-shaped insert and a bent spring. During installation, the L-shaped insert is inserted into the gap between the yoke and the baffle structure. The positioning pin on the yoke is engaged with the positioning hole on the L-shaped insert to form a positioning fit. The protrusion on one end of the L-shaped insert is pressed against the baffle structure to achieve a clamping installation effect. This design realizes the positioning installation of the spring structure between the yoke and the armature, and also facilitates the installation and disassembly of the spring structure, avoiding the shaking or even falling off of the spring structure, and ensuring good installation stability.

[0029] 5. In the high-power electromagnetic relay structure provided by the present invention, an arc-extinguishing device is installed in the mounting gap between the baffle structure and the mounting plate. The arc-extinguishing device adopts a double arc-extinguishing chamber structure with openings facing the contact surfaces between the two moving and stationary contacts. This structure increases the arc-initiating and arc-extinguishing range through the double arc-extinguishing chamber structure, which can effectively introduce the arc generated between the two moving and stationary contacts into the two arc-extinguishing chambers for rapid arc extinguishing. The arc-extinguishing capability is significantly improved, and the arc-extinguishing effect is good. This can improve the breaking capacity of the relay, avoid the arc from causing burning damage to the contacts and insulation materials, and improve the electrical life and safety of the product.

[0030] 6. In the high-power electromagnetic relay structure provided by the present invention, a T-shaped guide groove is extended on one side of the baffle structure, and a T-shaped guide strip is provided on the outer shell of the arc-extinguishing chamber. The T-shaped guide strip is slidably inserted into the T-shaped guide groove to realize the limiting installation of the arc-extinguishing device on the baffle structure, and to guide the installation of the arc-extinguishing device, ensuring that the installation position of the arc-extinguishing device in the installation gap is accurate, preventing the arc-extinguishing device from shaking or shifting during installation, ensuring stable and reliable installation, and facilitating subsequent maintenance and replacement of the arc-extinguishing device. Attached Figure Description

[0031] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below.

[0032] Figure 1 This is a three-dimensional structural diagram of the high-power electromagnetic relay structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the high-power electromagnetic relay structure of the present invention after concealing the static contact component;

[0034] Figure 3 This is a schematic diagram of the separate structure of the base and the static contact assembly of the present invention;

[0035] Figure 4 This is a schematic diagram of the split structure of the static touch component of the present invention;

[0036] Figure 5 This is a schematic diagram of the planar structure of the base of the present invention;

[0037] Figure 6 This is a schematic diagram of the installation structure of the magnetic circuit structure and armature structure of the present invention;

[0038] Figure 7 This is a schematic diagram of the reed structure of the present invention;

[0039] Explanation of reference numerals in the attached drawings: 1. Base; 11. First mounting slot; 12. Second mounting slot; 13. Mounting guide hole; 14. First slot; 15. Second slot; 2. Magnetic circuit structure; 21. Coil component; 22. Yoke; 23. First locking foot; 24. Second locking foot; 25. Lead wire guide foot; 26. Positioning post; 3. Armature assembly; 31. Armature; 32. Fixing component; 33. Connecting piece; 4. Moving contact piece; 41. Moving contact; 5. Mounting plate; 51. First stationary contact piece; 52. 1. First end; 52. Second stationary contact piece; 521. Second end; 53. Stationary contact; 54. Raised structure; 55. Concave groove; 56. Limiting notch; 57. Positioning block; 58. Positioning hole; 6. Slot structure; 61. Limiting insertion hole; 62. Limiting boss; 7. Spring structure; 71. L-shaped insert; 72. Bending spring; 73. Positioning hole; 74. Raised strip structure; 8. Baffle structure; 9. Arc extinguishing device; 91. T-shaped guide strip; 92. T-shaped guide groove. Detailed Implementation

[0040] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0041] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., 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 the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] Example 1

[0044] The following is a detailed description of this embodiment with reference to the accompanying drawings:

[0045] This embodiment provides, as follows: Figure 1-7 The high-power electromagnetic relay structure shown includes a base and a magnetic circuit structure 2, an armature assembly 3, and a contact structure disposed on the base 1. The armature assembly 3 is oscillatingly connected to the magnetic circuit structure 2. A slot structure 6 is provided on one side of the base 1 extending along the length of the base. The contact structure includes:

[0046] The movable contact assembly includes a movable contact piece 4 that is linked to the armature assembly 3, and two movable contacts 41 that are spaced apart vertically from each other on the movable contact piece 4.

[0047] The stationary contact assembly includes a mounting plate 5 inserted into the slot structure 6, a first stationary contact piece 51 and a second stationary contact piece 52 disposed on the mounting plate 5 by a positioning structure, and a protrusion structure 54 formed on the mounting plate 5 and spaced out between the first stationary contact piece 51 and the second stationary contact piece 52. The first stationary contact piece 51 and the second stationary contact piece 52 are provided with two stationary contacts 53 corresponding to the two moving contacts 41 at a distance from each other. The first stationary contact piece 51 and the second stationary contact piece 52 are tightly inserted into the slot structure 6 under the drive of the mounting plate 5. The armature assembly 3 is driven by the magnetic circuit structure 2 to reciprocate and swing, and drives the two moving contacts of the moving contact piece 4 to contact or separate from the two stationary contacts.

[0048] In the above embodiment, the high-power electromagnetic relay consists of a base 1, a magnetic circuit structure 2, an armature assembly 3, and a contact structure. The moving contact assembly, armature assembly, and magnetic circuit structure can be assembled together and simultaneously installed on the base. When installing the stationary contact assembly, since the stationary contact assembly consists of a first stationary contact piece, a second stationary contact piece, and a mounting plate, the first stationary contact piece 51 and the second stationary contact piece 52 are first positioned and assembled on the mounting plate 5. Then, the mounting plate 5 drives the two stationary contact pieces to be inserted into the slot structure 6 on one side of the base 1. This completes the installation and fixation of the stationary contact assembly on the base 1, so that the two stationary contacts 53 on the two stationary contact pieces and the two moving contacts 53 on the moving contact pieces are connected. With the contacts facing each other, the advantage of this technical solution is that the two stationary contacts and the mounting plate 5 can be pre-assembled into an integral structure on the outside of the base 1, thereby realizing the overall installation of the stationary contact assembly on the base 1. During the installation process, there is no need to flip and adjust the installation posture and angle of the base, the installation structure is simple, and the stationary contacts no longer need to be made into a bent shape, which reduces the difficulty of the molding process and facilitates installation. In addition, the magnetic circuit structure 2 and the armature assembly 3 are also pre-assembled into an integral structure. This design is conducive to achieving the modular and integrated installation of this relay product, thereby facilitating the automated production and assembly of the product, improving installation efficiency, and reducing production costs.

[0049] The following is combined Figure 1-4 The specific setup method for the static touch component is explained in detail:

[0050] The protruding structure 54 is integrally formed in a U-shape on the mounting plate 5 and extends to the upper and lower sides of the mounting plate 5. The protruding structure 54 has a concave groove 55 extending along its contour shape. With this structure, the two stationary contacts are set lower than the protruding structure 54 on the mounting plate 5. The U-shaped protruding structure 54 and the concave groove 55 can increase the creepage distance between the first and second stationary contacts, thereby increasing the electrical clearance between them and avoiding creepage short circuit between the first and second stationary contacts, thus ensuring the safety of the two stationary contacts when assembled on the mounting plate.

[0051] The positioning structure includes a positioning block 57 disposed on the mounting plates 5 on both sides of the protruding structure 54, and a positioning hole 58 respectively disposed on the first stationary contact piece 51 and the second stationary contact piece 52. With this structure, the first stationary contact piece 51 and the second stationary contact piece 52 are positioned on the mounting plate 5 by the positioning block 57 being tightly fitted and abutting against the mounting plate 57. Thus, the mounting plate 5 can drive the first stationary contact piece 51 and the second stationary contact piece 52 to be installed into the slot structure 6 of the base 1 in one step. As a specific structural arrangement, the bottom of the slot structure 6 is provided with two limiting insertion holes 61 extending to the bottom surface of the base 1, and a limiting boss 62 formed between the two limiting insertion holes 61. Two opposing strip-shaped grooves are provided on the side walls of the slot structure 6. Correspondingly, the first stationary contact piece 51 and the second stationary contact piece 52 have two limiting pins that respectively insert into the two limiting insertion holes 61. The lower side of the mounting plate 5 is provided with a limiting recess 56 that engages with the limiting boss 62. When the two stationary contact pieces move together with the base 1... When the mounting plate 5 is inserted into the slot structure 6, the thickness of the static contact piece and the mounting plate is matched with the width of the slot structure, thereby achieving the tight fit installation requirement. At the same time, one side of the first static contact piece 51 and the second static contact piece 52 are respectively inserted into the two strip grooves, and the two limiting pins are allowed to pass through the limiting insertion hole to the bottom surface of the base. The limiting notch and the limiting boss cooperate to limit the mounting plate in the slot structure. The two static contact pieces and the moving contact piece are connected to form a conductive circuit through the contact of the two moving and static contacts.

[0052] To ensure that the two stationary contacts 53 and the two moving contacts 41 on the two stationary contact plates are arranged vertically in a vertically corresponding manner, such as... Figure 3-4 As shown, the first stationary contact piece 51 includes a first end 511 extending out of the upper side of the mounting plate 5, and one of the stationary contacts 53 is provided on the first end 511. The second stationary contact piece 52 includes a second end 521 disposed in a U-shaped groove formed by the protruding structure 54, and another stationary contact 53 is provided on the second end 521, which is vertically spaced from the first end 511. This arrangement makes the two stationary contacts 53 on the first stationary contact piece 51 and the second stationary contact piece 52 vertically spaced. The slot structure 6 has a slot on the side facing the moving contact piece, and the two stationary contacts 53 are accommodated in the slot, so that the two moving contacts and the two stationary contacts can contact or separate at the slot.

[0053] The following is combined Figure 1 , Figure 5-7 The specific structure of the magnetic circuit and armature assembly is described in detail:

[0054] The magnetic circuit structure 2 is horizontally mounted on the base 1 along its length and is fixed in relative position to the base 1 by a mounting structure. This design reduces the height of the relay and provides more stable and reliable support for the magnetic circuit structure 2 on the base 1. In a preferred embodiment, the magnetic circuit structure 2 includes a coil component 21 and a yoke 22 horizontally mounted on the base 1, and a spring structure 7 disposed between the yoke 22 and the armature assembly 3. A baffle structure 8 is provided on the base 1 between the yoke 22 and the moving contact 4, and the baffle structure 8 is positioned higher than the yoke 22. The armature assembly 3 has an L-shaped structure and bends over one end of the baffle structure 8 to connect to the moving contact 4. When energized, the magnetic circuit structure 2 generates an electromagnetic force that attracts the armature assembly 3. Driven by the electromagnetic force generated by the magnetic circuit structure 2, the armature assembly 3 swings towards the stationary contact assembly, and when the electromagnetic force disappears, it swings away from the stationary contact assembly under the drive of the spring structure 7. As can be seen from the above structural configuration, the baffle structure 8 insulates and separates the yoke and the moving contact on the base, increasing the creepage distance between them and ensuring that there is sufficient safe electrical clearance between the yoke and the moving contact.

[0055] In a preferred embodiment, the armature assembly 3 includes an armature 31 oscillatingly disposed on one end of the yoke 22, and a fixing member 32 injection molded on one end of the armature 31. A notch is provided on one end of the yoke 22 for the armature 31 to oscillate through. A connecting piece 33 fixedly connected to the moving contact 4 is embedded on the fixing member 32. The other end of the armature 31 is disposed opposite to one end of the coil component 21. The fixing member 32, made of plastic material, can be used to increase the creepage distance between the armature 31 and the moving contact 4. The armature 31 and the connecting piece 33 are integrally injection molded with the fixing member 32 in the form of insert injection molding, and the armature 31 and the connecting piece 33 are insulated and separated within the fixing member 32. The molding and manufacturing are convenient. The moving contact 4 can be fixedly connected to the armature 31 simply by riveting it to the connecting piece 33. The armature 31 has a recessed slot formed at the bend. The spring structure 7 passes through the recessed slot and connects between the yoke 22 and the armature 31. It has a bent spring 72 that presses against the port side of the recessed slot and the fixing member 32. The armature tends to swing away from the stationary contact assembly under the elastic force of the bent spring. When driven by electromagnetic force, it overcomes the elastic force of the bent spring and swings towards the stationary contact assembly.

[0056] Combination Figure 2 and Figure 7As shown, the spring structure 7 includes an L-shaped insert 71 positioned between the yoke 22 and the baffle structure 8, and a bent spring 72 formed in the central cavity of the L-shaped insert 71. Two positioning holes 73 are provided on the two sides of the L-shaped insert 71. Two positioning posts 26 are correspondingly provided on the yoke 22 and inserted into the two positioning holes 73. In addition, a protruding strip structure 74 is formed on one end of the L-shaped insert 71 that is in contact with the baffle structure 8, and its other end abuts against the other end of the armature 31. In summary, the function of the reed structure 7 is to drive the armature assembly 3 to swing away from the stationary contact assembly when the electromagnetic force disappears, thus achieving the automatic reset function of the armature assembly 3. Since the reed structure 7 is composed of an L-shaped insert 71 and a bent spring 72, during installation, the L-shaped insert 71 is inserted into the gap between the yoke 22 and the baffle structure 8. The positioning pin on the yoke engages with the positioning hole on the L-shaped insert to form a positioning fit. The protruding strip structure 74 at one end of the L-shaped insert presses against the baffle structure 8 to achieve a tight installation. This design achieves the positioning and installation of the reed structure 7 between the yoke and the armature, facilitates the installation and disassembly of the reed structure 7, prevents the reed structure from shaking or even falling off, and ensures good installation stability.

[0057] Now combined Figure 5-6 The specific configuration of the mounting structure is described in detail below. The mounting structure includes: a first mounting groove 11, a second mounting groove 12, a first limiting component, and a second limiting component. The first mounting groove 11 extends along the length of the base 1 and is disposed on the base 1. The coil component 21 is accommodated in the first mounting groove 11. The second mounting groove 12 is connected between the first mounting groove and the baffle structure 8. The yoke 22 is accommodated in the second mounting groove 12. The first limiting component includes two mounting guide holes 13 disposed in the first mounting groove 11 and extending to the bottom of the base 1. The coil component 21 has two lead wire guides 25 inserted into the two mounting guide holes 13. The second limiting component includes two first locking slots 14 disposed at different heights at both ends of the second mounting groove 12, at least one locking slot disposed at the bottom of the second mounting groove 12, and two first locking feet 23 formed on the yoke 22 and engaged in the two first locking slots 14. A second locking foot 24 is formed on the bottom edge of the yoke 22 and engaged in the second locking slot 15. With this structural configuration, the coil component 21 and the yoke 22 can be mounted on the base in a horizontal position via the first mounting slot and the second mounting slot. The first limiting component limits the installation of the coil component in the first mounting slot and the yoke in the second mounting slot, thereby ensuring the stability and reliability of the installation of the coil component and the yoke on the base, and making the installation support more stable.

[0058] In this embodiment, the breaking of the moving and stationary contacts of this high-power electromagnetic relay generates a high-voltage arc. In order to quickly extinguish the arc generated between the moving and stationary contacts, such as... Figure 1-2 As shown, the base 1 includes an installation gap formed between the baffle structure 8 and the mounting plate 5, suitable for accommodating moving and stationary contacts. An arc-extinguishing device 9 is provided in the installation gap on one side of the two moving and stationary contacts. The arc-extinguishing device 9 is a double arc-extinguishing chamber structure with openings facing the contact surfaces between the two moving and stationary contacts. With this structure, the openings of the two arc-extinguishing chambers of the arc-extinguishing device 9 face the two moving and stationary contacts 53 respectively. By increasing the arc-initiating and arc-extinguishing range through the double arc-extinguishing chamber structure, the arc generated between the two moving and stationary contacts 53 can be effectively introduced into the two arc-extinguishing chambers for rapid arc extinguishing. The arc-extinguishing capability is significantly improved, and the arc-extinguishing effect is good. This can improve the breaking capacity of the relay, avoid the arc from causing burning damage to the contacts and insulation materials, and improve the electrical life and safety of the product.

[0059] In a preferred embodiment, the arc-extinguishing device 9 includes an arc-extinguishing chamber shell and two sets of arc-extinguishing plate assemblies disposed within the arc-extinguishing chamber shell. A T-shaped guide groove 92 extends vertically from one side of the baffle structure 8, and a T-shaped guide strip 91 is correspondingly disposed on the arc-extinguishing chamber shell and slidably inserted into the T-shaped guide groove 92. The advantage of this design is that the T-shaped guide strip 91 slidably inserts into the T-shaped guide groove 92 to achieve the limiting installation of the arc-extinguishing device 9 on the baffle structure 8, and also guides the installation of the arc-extinguishing device 9, ensuring accurate installation position of the arc-extinguishing device in the installation gap, preventing wobbling and displacement of the arc-extinguishing device during installation, ensuring stable and reliable installation, and facilitating subsequent maintenance and replacement of the arc-extinguishing device.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A high-power electromagnetic relay structure, comprising a base (1) and a magnetic circuit structure (2), an armature assembly (3), and a contact structure disposed on the base, wherein the armature assembly (3) is oscillatingly connected to the magnetic circuit structure (2), characterized in that, A slot structure (6) is provided on one side of the base (1) along the length direction of the base, and the contact structure includes: The moving contact assembly includes a moving contact piece (4) that is linked to the armature assembly (3), and two moving contacts (41) that are spaced apart vertically from the moving contact piece (4); The stationary contact assembly includes a mounting plate (5) inserted into the slot structure (6), a first stationary contact piece (51) and a second stationary contact piece (52) disposed on the mounting plate (5) by a positioning structure, and a protrusion structure (54) formed on the mounting plate (5) and spaced out between the first stationary contact piece (51) and the second stationary contact piece (52). The first stationary contact piece (51) and the second stationary contact piece (52) are provided with two stationary contacts (53) corresponding to the two moving contacts at a distance from each other. The first stationary contact piece (51) and the second stationary contact piece (52) are tightly fitted into the slot structure (6) under the drive of the mounting plate (5). The protruding structure (54) is integrally formed in a U-shape on the mounting plate (5) and extends to the upper and lower sides of the mounting plate (5); a concave groove (55) is provided on the protruding structure (54) along its outline shape. The positioning structure includes at least one positioning block (57) disposed on the mounting plate (5) on both sides of the protruding structure (54), and at least one positioning hole (58) disposed on the first stationary contact piece (51) and the second stationary contact piece (52), respectively. The positioning block (57) is tightly fitted and abutted in the positioning hole (58).

2. The high-power electromagnetic relay structure according to claim 1, characterized in that: The slot structure (6) has a slot on the side facing the moving contact piece, and the two stationary contacts (53) are accommodated in the slot. The first stationary contact piece (51) includes a first end (511) extending out of the upper side of the mounting plate (5), and one of the stationary contacts is provided on the first end (511). The second stationary contact piece (52) includes a second end (521) disposed in a U-shaped groove formed by the protruding structure (54), and another stationary contact is provided on the second end (521), which is spaced vertically from the first end.

3. The high-power electromagnetic relay structure according to claim 2, characterized in that: The bottom of the slot structure (6) is provided with two limiting holes (61) extending through to the bottom surface of the base (1) and a limiting boss (62) formed between the two limiting holes (61); the first stationary contact piece (51) and the second stationary contact piece (52) have two limiting pins that are respectively inserted into the two limiting holes (61), and the lower side of the mounting plate (5) is provided with a limiting recess (56) that engages with the limiting boss (62).

4. A high-power electromagnetic relay structure according to any one of claims 1-3, characterized in that: The magnetic circuit structure (2) is horizontally installed on the base (1) along the length of the base, and is fixed in relative position with the base (1) by the installation structure.

5. The high-power electromagnetic relay structure according to claim 4, characterized in that: The magnetic circuit structure (2) includes a coil component (21) and a yoke (22), and a reed structure (7) disposed between the yoke (22) and the armature assembly (3). A baffle structure (8) is disposed on the base (1) between the yoke (22) and the moving contact (4). The baffle structure (8) is disposed higher than the yoke (22). The armature assembly (3) has an L-shaped structure and bends over one end of the baffle structure (8) to connect to the moving contact (4). The armature assembly (3) swings towards the side closer to the stationary contact assembly under the drive of the electromagnetic force generated by the magnetic circuit structure (2), and swings away from the stationary contact assembly under the drive of the reed structure (7) when the electromagnetic force disappears.

6. The high-power electromagnetic relay structure according to claim 5, characterized in that: The mounting structure includes: A first mounting groove (11) extends along the length of the base (1) and is disposed on the base (1), and the coil component (21) is accommodated in the first mounting groove (11); The second mounting groove (12) is connected between the first mounting groove (11) and the baffle structure (8), and the yoke (22) is accommodated in the second mounting groove (12); The first limiting component includes two mounting guide holes (13) disposed in the first mounting groove (11) and extending to the bottom of the base (1), and the coil component (21) has two lead leads (25) inserted into the two mounting guide holes (13); The second limiting component includes two first slots (14) staggered at both ends of the second mounting groove (12), at least one second slot (15) at the bottom of the second mounting groove (12), two first feet (23) formed on the yoke (22) and abutting in the two first slots (14), and a second foot (24) formed on the bottom edge of the yoke (22) abutting in the second slot (15).

7. The high-power electromagnetic relay structure according to claim 5, characterized in that: The armature assembly (3) includes an armature (31) oscillatingly disposed on one end of the yoke, and a fixing member (32) injection molded on one end of the armature (31). A connecting piece (33) fixedly connected to the moving contact piece (4) is embedded on the fixing member (32). The other end of the armature (31) is disposed opposite to one end of the coil component. A relief slot is formed at the bend of the armature (31). The spring structure (7) passes through the relief slot and connects between the yoke (22) and the armature (31), and has a bent spring piece (72) pressing against the port side of the relief slot that is close to the fixing member.

8. The high-power electromagnetic relay structure according to claim 7, characterized in that: The spring structure (7) includes an L-shaped insert (71) positioned between the yoke (22) and the baffle structure (8), and a bent spring (72) formed in the central cavity of the L-shaped insert (71). Two positioning holes (73) are provided on the two sides of the L-shaped insert (71), and two positioning posts (26) are correspondingly provided on the yoke (22) and inserted into the two positioning holes (73). A convex strip structure (74) is formed on one end of the L-shaped insert (71) and presses against the baffle structure (8), and its other end abuts against the other end of the armature.

9. The high-power electromagnetic relay structure according to claim 1, characterized in that: The base (1) includes an installation gap formed between the baffle structure (8) and the mounting plate (5) suitable for accommodating the moving and stationary contacts. An arc-extinguishing device (9) is provided in the installation gap on one side of the two moving and stationary contacts. The arc-extinguishing device (9) is a double arc-extinguishing chamber structure with openings facing the contact surface between the two moving and stationary contacts.

10. The high-power electromagnetic relay structure according to claim 9, characterized in that... The arc extinguishing device (9) includes an arc extinguishing chamber shell and two sets of arc extinguishing plate assemblies disposed in the arc extinguishing chamber shell. A T-shaped guide groove (92) is vertically extended on one side of the baffle structure (8), and a T-shaped guide strip (91) is correspondingly disposed on the arc extinguishing chamber shell and slidably inserted into the T-shaped guide groove (92).

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