Relay

Abstract

The invention discloses a relay, and relates to the technical field of relays, the relay comprises a shell, a fixed terminal part, a movable terminal part and an electromagnet, the fixed terminal part and the movable terminal part are arranged in a containing cavity, the fixed terminal part is used for being electrically connected with an external circuit, the electromagnet comprises a coil and an armature, the coil is used for driving the armature to rotate, and the movable terminal part is used for being electrically connected with the coil. The relay further comprises an auxiliary contact assembly, mounting seats are arranged at the two ends of the coil, the auxiliary contact assembly is arranged on one of the mounting seats or the shell, and the auxiliary contact assembly is arranged on the other mounting seat or the shell and can drive the movable terminal part to abut against or be separated from the fixed terminal part. The auxiliary contact assembly comprises a fixed auxiliary contact and a movable auxiliary contact, the armature comprises two push rods which are arranged at an interval, and the movable auxiliary contact abuts against one of the push rods; according to the technical scheme, compatibility of auxiliary contact assemblies in different installation directions can be achieved, and the relay platform can adapt to different pin leading-out modes.

Description

Technical Field

[0001] The present application relates to the technical field of relays, and in particular to a relay. Background Art

[0002] A relay is an automatic switch that uses a low-current electromagnetic coil to control a high-current circuit. When the coil is energized to generate a magnetic field, the armature is attracted to drive the contacts to close or open, thereby achieving the isolation, amplification, conversion and protection of weak current from strong current. It is widely used in scenarios such as charging piles, automobiles, home appliances and industrial automation.

[0003] As new energy charging stations evolve toward higher power and higher current, relays must simultaneously meet requirements for higher current carrying capacity, greater clearance, and creepage distances. To accommodate diverse installation and wiring requirements, high-current relays often come in a variety of versions with positive and inverted terminal pinouts. This results in incompatibility within the same relay platform, necessitating separate molds and production, resulting in poor versatility and increased manufacturing costs. Summary of the Invention

[0004] This application proposes a relay, which aims to provide a relay product that is compatible with both upright and inverted lead-out modes without increasing the number of parts.

[0005] A relay provided in one embodiment of the present application includes a housing, a fixed terminal portion, a movable terminal portion, and an electromagnet. The housing is formed with a receiving cavity. The fixed terminal portion and the movable terminal portion are both disposed in the receiving cavity. The fixed terminal portion is used to electrically connect to an external circuit.

[0006] The electromagnet includes a coil and an armature, wherein the coil is used to drive the armature to rotate. The armature is rotatably arranged in the housing and abuts against the movable terminal portion, and can drive the movable terminal portion to abut against or disengage from the fixed terminal portion;

[0007] In which, the relay also includes an auxiliary contact assembly, mounting seats are provided at both ends of the coil, the auxiliary contact assembly is arranged on one of the mounting seats or the housing, the auxiliary contact assembly includes a fixed auxiliary contact and a movable auxiliary contact, the armature includes two push rods arranged at intervals, and the movable auxiliary contact abuts against one of the push rods.

[0008] In one embodiment, each of the mounting seats is provided with a mounting boss, the coil further comprises a connection terminal, and the connection terminal, the fixed auxiliary contact and the movable auxiliary contact are all provided on the mounting boss;

[0009] One of the mounting bosses is located on a first side of the coil, and the other mounting boss is located on a second side of the coil, and the first side and the second side are arranged opposite to each other.

[0010] In one embodiment, the armature further includes a main body and an abutment portion, the armature is located on a side of the coil facing the movable terminal portion, and the two push rods are provided on a side of the main body facing the coil, and the two push rods are respectively provided toward the two mounting seats;

[0011] The abutting portion abuts against the movable terminal portion and is used to drive the movable terminal portion to move.

[0012] In one embodiment, the relay further includes a slider, the slider is slidably provided on the housing, and both ends of the slider along the sliding direction of the slider are in contact with the abutting portion and the movable terminal portion respectively.

[0013] In one embodiment, the armature further comprises two matching portions, the two matching portions are respectively provided on both sides of the main body along the first direction, and each matching portion forms a matching groove;

[0014] Each mounting seat is provided with a magnetic portion, at least a portion of the structure of each magnetic portion is located in one of the matching grooves, and the magnetic portion can be adsorbed on or detached from the matching portion.

[0015] In one embodiment, the magnetic attraction portion includes a first plate and a second plate connected to each other, the first plate is arranged on the mounting seat, at least part of the structure of the second plate is located in the mating groove, the second plate is arranged along the first direction, and the first plate is arranged along the second direction.

[0016] In one embodiment, the movable terminal portion includes a deformable plate and a movable contact, the deformable plate is provided on the housing, and the movable contact is provided on a side of the deformable plate facing the fixed terminal portion;

[0017] The fixed terminal portion is provided with a fixed contact facing the movable contact, and the fixed contact is arranged opposite to the movable contact.

[0018] In one embodiment, the deformable plate includes at least two stacked springs, with a deformation space formed between the springs.

[0019] In one embodiment, the coil includes an iron core and a winding sleeved on the iron core, and two ends of the iron core are respectively connected to the two mounting seats.

[0020] In one embodiment, a side wall of the housing forms an escape groove, and at least a portion of the structure of the fixed auxiliary contact and the movable auxiliary contact is located in the escape groove.

[0021] In various embodiments of the present application, a relay is provided, comprising a housing, a fixed terminal portion, a movable terminal portion, and an electromagnet. The fixed terminal portion and the movable terminal portion are both located within a housing cavity of the housing. The two can be connected or disconnected to control the on / off state of an external circuit. Specifically, the electromagnet generates a magnetic field when the coil is energized. Under the action of the magnetic field, the armature rotates to drive the movable terminal portion to move and contact or disconnect with the fixed terminal portion. When the two are in contact, the external circuit is normally connected; when the two are disconnected, the external circuit is disconnected. Mounting seats are provided at both ends of the coil, and the two mounting seats are symmetrical about the midpoint of the coil axis. The auxiliary contact assembly of the relay can be installed on either mounting seat. The pins of the fixed auxiliary contact and the movable auxiliary contact can be extended from the top or bottom of the relay. Two push rods are provided on the armature. The two push rods are compatible with different installation positions of the auxiliary contact assembly and can ensure that the push rods contact the movable auxiliary contact to control the on / off state of the auxiliary contact assembly. By setting two opposing push rods on the armature, compatibility with auxiliary contact assemblies in different installation orientations can be achieved, allowing the relay platform to adapt to and be compatible with different pin-out modes, thereby improving the versatility of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of the first embodiment of the relay provided in this application;

[0024] Figure 2 for Figure 1 The structural diagram of the relay from another angle;

[0025] Figure 3 for Figure 1 Cross-sectional view of the relay;

[0026] Figure 4 It is a structural diagram of the armature in the relay;

[0027] Figure 5 for Figure 4 Schematic diagram of the structure of the middle armature from another angle;

[0028] Figure 6 It is a structural diagram of the coil in the relay;

[0029] Figure 7A schematic diagram of the three-dimensional structure of the second embodiment of the relay provided in this application;

[0030] Figure 8 for Figure 7 The structural diagram of the relay from another angle;

[0031] Figure 9 It is a structural diagram of the housing in the relay;

[0032] Figure 10 A schematic diagram of the three-dimensional structure of the third embodiment of the relay provided in this application;

[0033] Figure 11 This is a schematic diagram of the three-dimensional structure of the fourth embodiment of the relay provided in this application.

[0034] Description of Figure Numbers:

[0035] 100. Relay; 1. Housing; 11. Snap-fit ​​part; 1a. Avoidance groove; 1b. Snap-fit ​​groove; 1c. Mounting groove; 2. Fixed terminal portion; 21. First pin; 3. Movable terminal portion; 31. Second pin; 32. Movable contact; 33. Deformable plate; 4. Electromagnet; 41. Coil; 411. Iron core; 412. Winding; 413. Terminal; 42. Armature; 421. Main body; 422. Push rod; 423. Abutment portion; 424. Fitting portion; 42a. Fitting groove; 43. Magnetic portion; 431. First plate; 432. Second plate; 5. Auxiliary contact assembly; 51. Fixed auxiliary contact; 52. Movable auxiliary contact; 53. Third pin; 6. Mounting seat; 61. Mounting boss; 62. Snap-fit ​​boss; 7. Slider. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in multiple embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0037] It should be noted that if multiple embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in multiple embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0039] As new energy charging stations evolve toward higher power and higher current, relays 100 must simultaneously meet requirements for higher current carrying capacity, greater clearance, and creepage distances. To accommodate diverse installation and wiring requirements, high-current relays 100 often come in various versions with positive and inverted terminal pinouts. This results in incompatibility across the same relay 100 platform, necessitating separate molds and production, resulting in poor versatility and increased manufacturing costs.

[0040] In response to the above problems, the present application proposes a relay 100 to solve the above technical problems.

[0041] See also Figure 1 In one embodiment of the present application, the relay 100 includes a housing 1, a fixed terminal portion 2, a movable terminal portion 3 and an electromagnet 4. The housing 1 is formed with a receiving cavity, and the fixed terminal portion 2 and the movable terminal portion 3 are both arranged in the receiving cavity. The fixed terminal portion 2 is used to be electrically connected to an external circuit. The electromagnet 4 includes a coil 41 and an armature 42. The coil 41 is used to drive the armature 42 to rotate. The armature 42 is rotatably arranged in the housing 1 and abuts against the movable terminal portion 3, and can drive the movable terminal portion 3 to abut or disengage from the fixed terminal portion 2. The relay 100 also includes an auxiliary contact assembly 5. Mounting seats 6 are provided at both ends of the coil 41. The auxiliary contact assembly 5 is arranged on one of the mounting seats 6 or the housing 1. The auxiliary contact assembly 5 includes a fixed auxiliary contact 51 and a movable auxiliary contact 52. The armature 42 includes two push rods 422 arranged at intervals, and the movable auxiliary contact 52 abuts against one of the push rods 422.

[0042] The present application proposes two types of relays 100, namely, an inverted relay 100 in which the third pin 53 of the auxiliary contact assembly 5 and the terminal 413 of the electromagnet 4 are led from the top of the relay 100, and an upright relay 100 in which the third pin 53 and the terminal 413 are led from the bottom of the relay 100. The upright relay 100 can be seen in the attached drawings. Figures 1 to 6 , the inverted relay 100 can refer to the attached drawings Figures 7 to 9 The difference between the upright relay 100 and the inverted relay 100 lies in the different pin placement positions of the auxiliary contact assembly 5, thereby matching different usage scenarios. This application utilizes a centrally symmetrical mounting base 6 structure at both ends of the coil 41 to accommodate different pin placement requirements. On this basis, the armature 42 structure is redesigned, with a push rod 422 positioned on the side facing the auxiliary contact assembly 5. This ensures that movement of the armature 42 simultaneously drives movement of the movable auxiliary contact 52, enabling signal verification and monitoring through the auxiliary contact assembly 5.

[0043] On the basis of the above two configurations, this application also proposes a third configuration of 5 pins of the auxiliary contact assembly. For details, please refer to Figure 10 In this embodiment, the mounting base 6 structure is eliminated at one end of the coil 41. By raising the bottom wall of the housing 1 to accommodate the coil 41, a mounting groove 1c is provided on the side wall of the housing 1 to accommodate the fixed auxiliary contact 51 and the movable auxiliary contact 52. This embodiment can further simplify the internal structure of the product. Furthermore, based on the third auxiliary contact assembly 5 pin arrangement method, a pin arrangement method of the auxiliary contact assembly 5 is proposed that is opposite to this arrangement method. For details, please refer to Figure 11 The fixed auxiliary contact 51 and the movable auxiliary contact 52 are arranged in the installation groove 1c, so as to simplify the internal structure of the product.

[0044] Specifically, the auxiliary contact assembly 5 acts as a pre-check switch in the relay 100. A low-voltage detection signal is first applied to the fixed auxiliary contact 51. Driven by the low current of the electromagnet 4, the armature 42 rotates slightly, and one of its dual push rods 422 then pushes the movable auxiliary contact 52 and the fixed auxiliary contact 51 to close, forming a reliable microampere-level circuit and providing real-time feedback on the operating status of the relay 100. Only after the auxiliary circuit confirms that the pull-in is normal and there is no adhesion or jamming does the system load a high current into the main contact circuit. This a priori mechanism effectively prevents arcing or welding caused by faults when the main contact closes under load, improving the safety and reliability of high-voltage DC applications such as charging piles and energy storage systems.

[0045] A relay 100 is proposed in multiple embodiments of the present application. The relay 100 includes a housing 1, a fixed terminal part 2, a movable terminal part 3 and an electromagnet 4. The fixed terminal part 2 and the movable terminal part 3 are both located in a receiving cavity of the housing 1. The fixed terminal part 2 has a first pin 21, and the movable terminal part 3 has a second pin 31. Partial structures of the first pin 21 and the second pin 31 pass through the housing 1 and are exposed to the outside. The two are respectively connected to an external circuit through the first pin 21 and the second pin 31, thereby realizing control of the external circuit. The fixed terminal part 2 and the movable terminal part 3 can be connected or disconnected to realize control of the on and off of the external circuit. Specifically, a magnetic field is generated when the coil 41 of the electromagnet 4 is energized. Under the action of the magnetic field, the armature 42 is driven to rotate to drive the movable terminal part 3 to move and contact or disconnect with the fixed terminal part 2. When the two are in contact, the external circuit is normally connected; when the two are disconnected, the external circuit is disconnected.

[0046] Mounting seats 6 are provided at both ends of the coil 41. The two mounting seats 6 are symmetrical about the center of the coil 41 axis. The auxiliary contact assembly 5 of the relay 100 can be installed on either mounting seat 6. The pins of the fixed auxiliary contact 51 and the movable auxiliary contact 52 can be extended from the top of the relay 100 (i.e., the inverted relay 100 described above) or from the bottom (i.e., the upright relay 100 described above). Two push rods 422 are provided on the armature 42. The two push rods 422 are compatible with different installation positions of the auxiliary contact assembly 5, ensuring that the push rods 422 and the movable auxiliary contact 52 are in contact to achieve opening and closing control of the auxiliary contact assembly 5. By providing two opposing push rods 422 on the armature 42, compatibility with auxiliary contact assemblies 5 installed in different orientations can be achieved, making the relay 100 platform adaptable and compatible with different pin extension modes, thereby improving the versatility of the product.

[0047] In order to realize the installation of the third pin 53 of the auxiliary contact assembly 5 and the terminal 413 of the electromagnet 4, the mounting base 6 is provided with a mounting boss 61. For details, please refer to Figure 6 One of the mounting bosses 61 is located on the first side of the coil 41, and the other mounting boss 61 is located on the second side of the coil 41. The first side and the second side are arranged opposite to each other. The mounting boss 61 can further increase the thickness of the mounting base 6, thereby making the installation of the third pin 53 and the terminal 413 more reliable, obtaining a larger support surface and mechanical strength, reducing the risk of cold soldering and desoldering caused by lead shaking, and being able to withstand greater plug-in and pull-out force and thermal expansion and contraction stress, making long-term operation more reliable; at the same time, this mirror layout allows the same relay 100 platform to achieve both upright and inverted lead-out methods without replacing parts, saving mold costs and reducing material stagnation rate.

[0048] It is understood that the auxiliary contact assembly 5 includes a fixed auxiliary contact 51 and a movable auxiliary contact 52. The fixed auxiliary contact 51 and the movable auxiliary contact 52 are in sheet shape as a whole. For details, please refer to Figure 2 The fixed auxiliary contact 51 and the movable auxiliary contact 52 are both provided on the mounting seat 6 and extend upward. The movable auxiliary contact 52 is located between the fixed auxiliary contact 51 and the coil 41. A push rod 422 on the armature 42 abuts against the side of the movable auxiliary contact 52 facing away from the fixed auxiliary contact 51. When the armature 42 rotates clockwise, the push rod 422 pushes the movable auxiliary contact 52 toward one side of the fixed auxiliary contact 51, and the main body 421 of the movable auxiliary contact 52 is deformed until it contacts the fixed auxiliary contact 51. At this time, the auxiliary contact assembly 5 is closed. When the auxiliary contact assembly 5 is closed, the fixed terminal part 2 and the movable terminal part 3 are in a disconnected state, and the external circuit is broken; when the armature 42 rotates counterclockwise, the movable auxiliary contact 52 is disconnected from the fixed auxiliary contact 51, the auxiliary contact assembly 5 completes the verification, the fixed terminal part 2 and the movable terminal part 3 are in contact, and the external circuit is turned on. It should be noted that, regardless of whether the relay 100 adopts an upright layout or an inverted layout, the principle of the push rod 422 driving the movable auxiliary contact 52 to move is as described above and will not be repeated here.

[0049] In the technical solution of the present application, the movement of the movable terminal portion 3 is also driven by the armature 42. For details, please refer to Figure 3 The armature 42 includes a main body 421 and an abutment portion 423. The main body 421 is fixed to the inner wall of the shell 1 through a rotating shaft. The abutment portion 423 is arranged on the side of the main body 421 facing the movable terminal portion 3. When the coil 41 is energized to generate a magnetic field, it drives the armature 42 to rotate counterclockwise around the rotating shaft. The abutment portion 423 on the armature 42 abuts against the movable terminal portion 3 and drives the movable terminal portion 3 to move toward the fixed terminal portion 2 until it contacts the fixed terminal portion 2, and the external circuit is turned on. Otherwise, the external circuit is disconnected.

[0050] Since the relay 100 proposed in this application can adapt to different pin positions of the auxiliary contact assembly 5, the auxiliary contact assembly 5 needs to be easily disassembled relative to the relay body 421 to meet different pin position requirements. In view of this, the coil 41, the mounting base 6 and the auxiliary contact assembly 5 of this solution constitute an independent component, that is, the attached figure Figure 6The part shown adopts a split design with the main body 421 of the relay 100, which can be quickly disassembled and assembled. Specifically, a snap-in groove 1b is provided at the inner bottom of the shell 1, and accordingly, a snap-in protrusion 62 is provided on the side of the mounting seat 6 facing away from the coil 41. The mounting seat 6 is fixed in the snap-in groove 1b of the shell 1 by means of the snap-in protrusion 62, and the mounting seat 6 is partially abutted against the snap-in piece 11. Finally, glue is applied at the connection between the mounting seat 6 and the shell 1 to fix the mounting seat 6. The coil 41 is arranged between the two mounting seats 6 and is snap-fixed through the holes of the mounting seat 6. The fixed auxiliary contact 51 and the movable auxiliary contact 52 are also fixed through the mounting seat 6.

[0051] After the coil 41, mounting base 6 and auxiliary contact assembly 5 are integrated into an independent split module, positioning can be completed by simply inserting and snapping the snap-fit ​​protrusion 62 and the snap-fit ​​groove 1b. Assisted by glue curing, the entire module can be assembled and disassembled in seconds. The pin layout can be switched between "upright" and "inverted" without disassembling the relay 100 body 421. This greatly shortens the downtime for model change and reduces on-site maintenance costs, while avoiding overall scrapping and improving the versatility of spare parts and inventory turnover.

[0052] When an inverted layout is adopted, that is, the second embodiment proposed in this application, in order to prevent the fixed auxiliary contact 51 and the movable auxiliary contact 52 on the mounting seat 6 from interfering with the side wall of the housing 1, a avoidance groove 1a is formed on the side wall of the housing 1. For details, please refer to Figure 7 The fixed auxiliary contacts 51 and the movable auxiliary contacts 52 are both located in the avoidance groove 1a. The avoidance groove 1a reserves movable space for the fixed auxiliary contacts 51 and the movable auxiliary contacts 52 on the side wall of the shell 1. When installed inverted, there is zero interference between the contacts and the shell 1, which ensures smooth assembly and avoids extrusion deformation; at the same time, the contacts are half-surrounded by the groove wall, which plays a guiding and limiting role, improves the vibration resistance, and is more reliable in long-term operation.

[0053] When it is necessary to switch the third pin 53 of the auxiliary contact assembly 5 from an upright layout to an inverted layout, or from an inverted layout to an upright layout, it is only necessary to rotate the entirety of the coil 41, the mounting seat 6, and the auxiliary contact assembly 5 180° around the axis of the second direction to change the lead-out position of the third pin 53. There is no need to add other auxiliary mounting structures or change the structure of the main body 421 of the relay 100. This saves secondary tooling and debugging time, and keeps the main body 421 of the relay 100 completely unchanged, significantly reducing the cost of replacement, shortening the replacement cycle, and improving the platform versatility.

[0054] Since the armature 42 is located on one side of the coil 41 along the second direction, in order to ensure that the magnetic field generated by the coil 41 when it is energized can drive the armature 42 to rotate around the rotating shaft, the mounting base 6 at both ends of the coil 41 is provided with a magnetic attraction portion 43. The magnetic attraction portion 43 is generally L-shaped and can be led out along the radial direction of the coil 41 and act on the armature 42. Correspondingly, the armature 42 is provided with a matching portion 424 at both ends along the first direction. For details, please refer to Figure 3 and Figure 4 The mating portions 424 at both ends of the main body 421 of the armature 42 form mating grooves 42a, and a portion of the magnetic portion 43 is located within the mating grooves 42a. When the coil 41 is energized, the magnetic portions 43 at both ends of the coil 41 become magnetized and generate a magnetic field. The mating portions 424 on the armature 42 are attracted by the magnetic portion 43, thereby causing the armature 42 to rotate about the rotation axis under the action of the magnetic force. The magnetic portion 43 is in the shape of an L-shaped plate. Specifically, the magnetic portion 43 includes a first plate 431 and a second plate 432 connected to each other. The first plate 431 is disposed on the mounting seat 6, and at least a portion of the second plate 432 is located within the mating grooves 42a. The second plate 432 is arranged along a first direction, and the first plate 431 is arranged along a second direction. The first plate 431 and the second plate 432 are arranged perpendicularly and form an integral structure. The L-shaped magnetic portion 43 guides the magnetic field generated by the coil 41 to act on the armature 42.

[0055] In one embodiment of the present application, the movable terminal portion 3 of the relay 100 is also driven by the coil 41 to drive the armature 42. Specifically, the main body 421 of the armature 42 is provided with an abutment portion 423 on the side facing the movable terminal portion 3. For details, please refer to Figure 5 One end of the abutment portion 423 abuts against the movable end of the movable terminal portion 3. When the armature 42 rotates around the rotating shaft, the abutment portion 423 also rotates counterclockwise and acts on the movable terminal portion 3, causing the movable terminal portion 3 to deform toward the side of the fixed terminal portion 2 until it contacts the movable terminal portion 3. The abutment portion 423 directly forms a rigid lever with the movable end of the movable terminal portion 3. After the coil 41 is energized, the armature 42 only needs to rotate slightly to instantly press down the movable terminal portion 3 through the abutment portion 423, causing it to elastically deform and reliably close with the fixed terminal portion 2; this not only shortens the mechanical transmission chain, reduces contact bounce and arc time, but also reduces the power consumption of the coil 41, thereby improving the response speed and electrical life of the high-current relay 100.

[0056] Furthermore, in order to ensure the reliability of the armature 42 driving the movable terminal portion 3 to move, the relay 100 further includes a slider 7. For details, please refer to Figure 3The slider 7 is slidably arranged on the housing 1, and the two ends of the slider 7 along the sliding direction of the slider 7 abut against the abutment portion 423 and the movable terminal portion 3 respectively. The slider 7 converts the swing of the abutment portion 423 of the armature 42 into a stable linear thrust on the movable terminal portion 3, eliminating the lateral force and uneven friction caused by the swing, ensuring that the contact is closed in the same position and the pressure is balanced each time, thereby significantly reducing the contact resistance, reducing arc erosion, and improving the reliability and life of the relay 100 under long-term high current conditions.

[0057] In one embodiment of the present application, the movable terminal portion 3 includes a deformation plate 33 and a movable contact 32. The deformation plate 33 is provided on the housing 1, and the movable contact 32 is provided on the side of the deformation plate 33 facing the fixed terminal portion 2. For details, please refer to Figure 3 The deformation plate 33 includes at least two stacked springs, and a deformation space is formed between each spring. The present application does not limit the number of springs, which can be two or more than two. In this embodiment, the number of springs is 6, so as to ensure that the reaction force of the springs is reduced by stacking while increasing the current.

[0058] It should be noted that the reeds can be connected by welding or riveting, and this application does not impose any restrictions on this. In one embodiment of the present application, the reeds are connected by riveting, so that the reeds form an integral structure. The riveting connection can avoid welding defects and weaknesses that may occur during the welding process, thereby improving the overall strength and reliability of the reeds. Secondly, the riveting connection can reduce the number of welded joints, reduce the risk of stress concentration and fatigue fracture caused by welding, and increase the service life of the reeds, thereby extending the service life of the relay 100. In this embodiment, a total of five reeds are stacked, so that the reaction force of the reed stacking is reduced, making it easier for the movable contact 32 and the fixed contact to abut and disengage.

[0059] The coil 41 of the present application includes an iron core 411 and a winding 412 wound around the outer periphery of the iron core 411. The two ends of the iron core 411 are respectively connected to the two mounting bases 6 and partially pass through the mounting bases 6 to connect to the magnetic attraction portion 43. For details, please refer to Figure 3 The winding 412 is connected to the terminal 413. When the terminal 413 is connected to the external circuit, current passes through the winding 412 and generates a magnetic field, causing the iron core 411 to be magnetized. The iron core 411 contacts the magnetic attraction part 43, so that the magnetic attraction part 43 is also magnetized, generating a magnetic force to control the armature 42 to rotate around the rotating shaft, thereby driving the auxiliary contact assembly 5 and / or the movable terminal part 3 to close or open.

[0060] The above description is merely an exemplary embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made using the contents of the present application specification and drawings under the technical concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A relay, characterized in that: The invention comprises a housing (1), a fixed terminal portion (2), a movable terminal portion (3) and an electromagnet (4); the housing (1) is formed with a receiving cavity; the fixed terminal portion (2) and the movable terminal portion (3) are both arranged in the receiving cavity; the fixed terminal portion (2) is used for electrically connecting to an external circuit; The electromagnet (4) comprises a coil (41) and an armature (42), wherein the coil (41) is used to drive the armature (42) to rotate, and the armature (42) is rotatably arranged on the housing (1) and abuts against the movable terminal portion (3), and can drive the movable terminal portion (3) to abut against or disengage from the fixed terminal portion (2); The relay further comprises an auxiliary contact assembly (5), mounting seats (6) are provided at both ends of the coil (41), the auxiliary contact assembly (5) is arranged on one of the mounting seats (6) or the housing (1), the auxiliary contact assembly (5) comprises a fixed auxiliary contact (51) and a movable auxiliary contact (52), the armature (42) comprises two push rods (422) arranged at intervals, and the movable auxiliary contact (52) abuts against one of the push rods (422).

2. The relay according to claim 1, wherein Each of the mounting seats (6) is provided with a mounting boss (61), and the coil (41) further includes a connection terminal (413), and the connection terminal (413), the fixed auxiliary contact (51), and the movable auxiliary contact (52) are all provided on the mounting boss (61); One of the mounting bosses (61) is located on a first side of the coil (41), and the other mounting boss (61) is located on a second side of the coil (41), and the first side and the second side are arranged opposite to each other.

3. The relay according to claim 1, wherein: The armature (42) further comprises a main body (421) and an abutting portion (423), the armature (42) being located on a side of the coil (41) facing the movable terminal portion (3), the two push rods (422) being located on a side of the main body (421) facing the coil (41), and the two push rods (422) being respectively arranged toward the two mounting seats (6); The abutting portion (423) abuts against the movable terminal portion (3) and is used to drive the movable terminal portion (3) to move.

4. The relay according to claim 3, wherein: The relay further comprises a slider (7), the slider (7) being slidably arranged on the housing (1), and the two ends of the slider (7) along the sliding direction of the slider (7) respectively abutting against the abutting portion (423) and the movable terminal portion (3).

5. The relay according to claim 3, wherein: The armature (42) further includes two matching portions (424), the two matching portions (424) being respectively arranged on both sides of the main body (421) along the first direction, and each matching portion (424) forming a matching groove (42a); Each mounting seat (6) is provided with a magnetic attraction portion (43), at least a portion of the structure of each magnetic attraction portion (43) is located in a matching groove (42a), and the magnetic attraction portion (43) can be adsorbed on or detached from the matching portion (424).

6. The relay according to claim 5, wherein: The magnetic attraction portion (43) includes a first plate (431) and a second plate (432) connected to each other, wherein the first plate (431) is arranged on the mounting seat (6), and at least part of the structure of the second plate (432) is located in the matching groove (42a), the second plate (432) is arranged along the first direction, and the first plate (431) is arranged along the second direction.

7. The relay according to any one of claims 1 to 6, characterized in that The movable terminal portion (3) comprises a deformation plate (33) and a movable contact (32), wherein the deformation plate (33) is provided on the housing (1), and the movable contact (32) is provided on a side of the deformation plate (33) facing the fixed terminal portion (2); The fixed terminal portion (2) is provided with a fixed contact facing the movable contact (32), and the fixed contact is arranged opposite to the movable contact (32).

8. The relay according to claim 7, wherein: The deformation plate (33) comprises at least two stacked springs, with a deformation space formed between the springs.

9. The relay according to any one of claims 1 to 6, characterized in that The coil (41) comprises an iron core (411) and a winding (412) sleeved on the iron core (411), and two ends of the iron core (411) are respectively connected to the two mounting seats (6).

10. The relay according to any one of claims 1 to 6, characterized in that A side wall of the housing (1) forms an avoidance groove (1a), and at least part of the structure of the fixed auxiliary contact (51) and the movable auxiliary contact (52) is located in the avoidance groove (1a).

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