Magnetic latching relay

Abstract

This utility model belongs to the field of relay equipment technology and discloses a magnetic latching relay, including a housing, multiple moving contacts, multiple stationary contacts, a push assembly, an armature assembly, and an electromagnetic system. The moving contacts are correspondingly arranged with the stationary contacts; the push assembly is slidably connected to the housing and includes a pushing member and a conductive member. The conductive member includes a connecting part and conductive bars located at both ends of the connecting part and arranged opposite to each other. The ends of the conductive bars are connected to the moving contacts. The pushing member has a mounting groove matching the shape of the conductive member, and the connecting part and part of the conductive bars are engaged in the mounting groove; the armature assembly is movably connected to the housing and connected to the pushing member; the electromagnetic system is installed inside the housing and includes an iron core, a first coil sleeved on the iron core, a second coil sleeved outside the first coil, and magnetic yokes disposed at both ends of the iron core. The first coil and the second coil are wound in opposite directions. This magnetic latching relay simplifies the drive circuit and has a low risk of phase-to-phase short circuits.

Description

Technical Field

[0001] This utility model relates to the field of relay equipment technology, and in particular to a magnetic latching relay. Background Technology

[0002] A magnetic latching relay, also known as a pulse relay, is characterized by the fact that it can switch states (engage or release) by providing a short pulse electrical signal through a coil, and after the pulse disappears, the magnetic force of a permanent magnet firmly holds the contact state without the need for continuous power.

[0003] Existing magnetic latching relays are mostly single-coil structures. When switching from the contact release state to the contact engagement state, a short, positive DC pulse is applied to the coil; when switching from the contact engagement state to the contact release state, a short, negative DC pulse is applied. This bidirectional current-driven circuit structure is relatively complex, and the components are expensive. Furthermore, in existing magnetic latching relays, the multiple moving contacts are generally assembled individually. Slight differences in the assembly precision and manufacturing errors of the moving contacts make it difficult to synchronize the actions of each moving contact. The time deviation of each moving contact's action is generally greater than 2ms, which leads to a high risk of phase-to-phase short circuits in the circuit.

[0004] Therefore, there is an urgent need to develop a magnetic latching relay to solve the above-mentioned technical problems. Utility Model Content

[0005] This invention provides a magnetic latching relay that uses a dual-coil differential driving method. It can be driven by unidirectional current, which simplifies the driving circuit and reduces costs. It also improves the synchronicity of the engagement and release of each moving contact, thereby reducing the risk of phase-to-phase short circuit.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Magnetic latching relays include:

[0008] case;

[0009] Multiple moving contacts and multiple stationary contacts are provided, with the moving contacts and stationary contacts corresponding to each other, and the multiple stationary contacts are mounted on the housing;

[0010] A pushing component is slidably connected to the housing. The pushing component includes a pushing member and a conductive member. The conductive member includes a connecting part and conductive bars located at both ends of the connecting part and arranged opposite to each other. The ends of the conductive bars are connected to the moving contact. The pushing member is provided with a mounting groove that matches the shape of the conductive member. The connecting part and part of the conductive bars are snapped into the mounting groove.

[0011] An armature assembly is movably connected to the housing and connected to the pusher member;

[0012] An electromagnetic system is installed inside the housing. The electromagnetic system includes an iron core, a first coil sleeved on the iron core, a second coil sleeved outside the first coil, and magnetic yokes disposed at both ends of the iron core. The first coil and the second coil are wound in opposite directions.

[0013] When the first coil is energized, the armature assembly drives the pusher under the magnetic force of the two yokes, causing the moving contact to separate from the corresponding stationary contact; when the second coil is energized, the armature assembly drives the pusher under the magnetic force of the two yokes, causing the moving contact to engage with the corresponding stationary contact.

[0014] Optionally, the pushing component includes multiple conductive elements of different sizes. The multiple conductive elements extend in the same direction and are nested at intervals from the inside to the outside according to their sizes. Each conductive element is provided with a mounting groove. The multiple mounting grooves extend in the same direction and are nested at intervals from the inside to the outside according to their sizes.

[0015] Optionally, the conductive element includes a conductive sheet, the two ends of which are bent toward each other to form the connecting portion and the two conductive bars;

[0016] And / or, the inner bottom wall of the housing is provided with a first groove extending along the sliding direction of the pusher, and the bottom of the pusher is provided with a first slider, the first slider being slidably connected to the first groove;

[0017] And / or, the inner bottom wall of the housing is provided with a slide rail extending along the sliding direction of the pusher, and the conductive bar is provided with a groove on the side near the inner bottom wall of the housing, and the conductive bar is slidably connected to the slide rail through the groove.

[0018] Optionally, the armature assembly includes:

[0019] An insulating outer shell is slidably connected to the housing, and the insulating outer shell is connected to the pushing member and moves synchronously with the pushing member;

[0020] An armature includes a mounting section passing through the insulating shell and bent sections located at both ends of the mounting section extending out of the insulating shell, the two bent sections being arranged opposite to each other; there are two armatures, the two armatures are of different sizes, the two armatures extend in the same direction and are nested from the inside to the outside according to their sizes, and a magnetic yoke is provided between the two bent sections of the two armatures that are close to each other;

[0021] A permanent magnet is installed inside the insulating housing and sandwiched between the two armatures.

[0022] Optionally, the inner bottom wall of the housing is provided with a second sliding groove extending along the sliding direction of the insulating outer shell, and at least one of the opposite side walls of the insulating outer shell is provided with a second slider, the second slider being slidably connected to the second sliding groove;

[0023] And / or, the insulating shell has a first latching protrusion on the side facing the pusher, and the pusher has a first latching groove on the side facing the insulating shell, the first latching groove engaging with the first latching protrusion.

[0024] Optionally, the housing is provided with two spaced-apart mounting plates, the electromagnetic system is sandwiched between the two mounting plates, one side of each mounting plate is provided with a first adhesive part, the first adhesive part contains a first adhesive, and the portion of the electromagnetic system opposite to the first adhesive part is bonded to the first adhesive.

[0025] Optionally, the housing is provided with a plurality of spaced partitions, each partition corresponding to a stationary contact, and the housing is provided with a plurality of second slots on the sidewalls opposite to the partitions, each second slot corresponding to a partition.

[0026] The stationary contact includes a stationary conductive plate and a stationary contact point disposed at one end of the stationary conductive plate. The stationary conductive plate is snapped into the second slot corresponding to it. The end of the stationary conductive plate with the stationary contact point is placed inside the housing. The side of the stationary conductive plate opposite to the stationary contact point abuts against the partition plate corresponding to it.

[0027] Optionally, the partition plate has a limiting portion on the side facing the static conductive plate; the top of the end of the static conductive plate with the static contact point extends upward to form an extension portion, and the side wall of the extension portion and the top wall of the static conductive plate both abut against the limiting portion;

[0028] And / or, within the housing, baffles are provided on both sides of the static conductive plate, the two baffles clamp and fix the static conductive plate, and a second adhesive part is provided on the top of the two baffles, the second adhesive part contains a second adhesive, and the second adhesive is bonded to the static conductive plate.

[0029] Optionally, the moving contact includes a plurality of moving conductive sheets stacked sequentially and a moving contact connected to all of the moving conductive sheets;

[0030] At least one of the moving conductive sheets near the stationary contact is provided with a bent portion, and the bent portion protrudes in the direction of approaching the stationary contact; when multiple moving conductive sheets are provided with the bent portion, the multiple bent portions are nested together.

[0031] Optionally, the magnetic latching relay further includes a top cover, which covers the top opening of the housing;

[0032] The top cover is provided with multiple connecting arms in the circumferential direction. Each connecting arm is provided with a third slot. The outer peripheral wall of the housing is provided with multiple limiting slots. Each limiting slot is provided with a second protrusion in each limiting slot. The connecting arm is engaged in the limiting slot corresponding to it, and the third slot is engaged with the corresponding second protrusion.

[0033] The beneficial effects of this utility model are:

[0034] This invention provides a magnetic latching relay, comprising a housing, multiple moving contacts, multiple stationary contacts, a push assembly, an armature assembly, and an electromagnetic system. The electromagnetic system of this magnetic latching relay has two coils. When the first coil is energized, the armature assembly drives a pusher to move under the magnetic force of the two yokes. The movement of the pusher causes the connected conductive busbar to move, which in turn causes the connected moving contact to move, causing the moving contact to separate from its corresponding stationary contact. When the second coil is energized, the armature assembly drives the pusher to move under the magnetic force of the two yokes. The movement of the pusher causes the connected conductive busbar to move, which in turn causes the connected moving contact to move, causing the moving contact to engage with its corresponding stationary contact. This dual-coil differential driving method, by setting the winding directions of the first and second coils to be opposite, allows both coils to be driven by current in the same direction, thus achieving opposite magnetic properties, simplifying the driving circuit and reducing component costs.

[0035] By integrating two conductive bars through conductive components, the two conductive bars can move synchronously when the pusher moves, thereby enabling the moving contacts on the two conductive bars to move synchronously and reducing the risk of phase-to-phase short circuits.

[0036] By fixing the conductive component with a mounting groove whose shape matches the conductive component, the structure is simple and easy to install and disassemble. On the other hand, it provides a better fixation effect for the conductive component and reduces the risk of deformation of the conductive component. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0038] Figure 1This is a schematic diagram of the structure of the magnetic latching relay provided in this embodiment of the utility model;

[0039] Figure 2 This is a schematic diagram of the magnetic latching relay provided in this embodiment of the present invention after the top cover has been removed;

[0040] Figure 3 yes Figure 2 A schematic diagram of the decomposition process;

[0041] Figure 4 This is a schematic diagram of the structure of the pushing component from one perspective provided in an embodiment of the present invention;

[0042] Figure 5 This is an exploded view of the pushing component provided in an embodiment of the present utility model;

[0043] Figure 6 This is a schematic diagram of the pushing component from another perspective provided by an embodiment of the present invention;

[0044] Figure 7 This is a cross-sectional view of the electromagnetic system provided in an embodiment of the present invention;

[0045] Figure 8 This is an exploded view of the electromagnetic system provided in an embodiment of the present invention;

[0046] Figure 9 This is a schematic diagram of the structure of the shell provided in an embodiment of the present utility model;

[0047] Figure 10 This is a cross-sectional view of the armature assembly provided in an embodiment of the present utility model;

[0048] Figure 11 This is an exploded view of the armature assembly provided in an embodiment of the present utility model;

[0049] Figure 12 This is a schematic diagram of the cooperation between the armature assembly and the electromagnetic system provided in this embodiment of the utility model;

[0050] Figure 13 yes Figure 2 Enlarged view at point A;

[0051] Figure 14 yes Figure 9 Enlarged view at point B;

[0052] Figure 15 This is an assembly drawing of the stationary contact and the housing provided in an embodiment of the present utility model;

[0053] Figure 16 This is a schematic diagram of the structure of the moving contact provided in an embodiment of the present utility model;

[0054] Figure 17 This is a schematic diagram of the top cover provided in an embodiment of the present utility model.

[0055] In the picture:

[0056] 100. Housing; 110. First slide groove; 111. First rib; 112. Second rib; 120. Slide rail; 130. Second slide groove; 131. Third rib; 140. Mounting plate; 141. First adhesive part; 150. Partition plate; 151. Limiting part; 160. Second slot; 170. Baffle plate; 171. Second adhesive part; 180. Limiting groove; 190. Second protrusion;

[0057] 200. Moving contact; 210. Moving conductive sheet; 211. Bending part; 220. Moving contact point;

[0058] 300. Stationary contact; 310. Stationary conductive plate; 311. Extension; 320. Stationary contact point;

[0059] 400. Pushing component; 410. Pushing element; 411. Mounting slot; 412. First slider; 413. First slot; 420. Conductive element; 421. Connecting part; 422. Conductive busbar; 4221. Groove;

[0060] 500, armature assembly; 510, insulating shell; 511, second slider; 512, first locking protrusion; 520, armature; 521, mounting section; 522, bending section; 530, permanent magnet;

[0061] 600, Electromagnetic system; 610, Iron core; 620, First coil; 630, Second coil; 640, Magnetic yoke; 650, Pin; 660, Coil frame;

[0062] 700, Top cover; 710, Connecting arm; 711, Third slot. Detailed Implementation

[0063] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0064] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0067] This embodiment provides a magnetic latching relay that uses a dual-coil differential driving method. It can be driven by unidirectional current, which simplifies the driving circuit, thereby reducing costs and improving the synchronicity of the engagement and release of each moving contact, thus reducing the risk of phase-to-phase short circuit.

[0068] Specifically, such as Figures 1-8 As shown, the magnetic latching relay includes a housing 100, multiple moving contacts 200, multiple stationary contacts 300, a drive assembly 400, an armature assembly 500, and an electromagnetic system 600.

[0069] The moving contact 200 is correspondingly arranged with the stationary contact 300, and multiple stationary contacts 300 are mounted on the housing 100. The pushing assembly 400 is slidably connected to the housing 100. The pushing assembly 400 includes a pushing member 410 and a conductive member 420. The conductive member 420 includes a connecting portion 421 and conductive busbars 422 located at both ends of the connecting portion 421 and arranged opposite to each other. The ends of the conductive busbars 422 are connected to the moving contact 200. The pushing member 410 has a mounting groove 411 that matches the shape of the conductive member 420. The connecting portion 421 and part of the conductive busbars 422 are engaged within the mounting groove 411. The armature assembly 500 is movably connected to the housing 100 and connected to the pushing member 410. The electromagnetic system 600 is installed inside the housing 100. The electromagnetic system 600 includes an iron core 610, a first coil 620 sleeved on the iron core 610, a second coil 630 sleeved outside the first coil 620, and magnetic yokes 640 disposed at both ends of the iron core 610. The first coil 620 and the second coil 630 are wound in opposite directions.

[0070] The working principle of this magnetic latching relay is as follows (see...). Figure 2 ):

[0071] When the first coil 620 is energized, the iron core 610 and the yoke 640 are magnetized. Under the magnetic force of the two yokes 640, the armature assembly 500 drives the pusher 410 to move to the right. The movement of the pusher 410 will drive the conductive busbar 422 connected to it to move. The movement of the conductive busbar 422 will drive the moving contact 200 connected to it to move, so that the moving contact 200 is separated from the corresponding stationary contact 300.

[0072] When the second coil 630 is energized, the iron core 610 and the yoke 640 are magnetized and the polarities of the two yokes 640 are reversed relative to when the first coil 620 is energized. Under the magnetic force of the two yokes 640, the armature assembly 500 drives the pusher 410 to move to the left. The movement of the pusher 410 will drive the conductive busbar 422 connected to it to move. The movement of the conductive busbar 422 will drive the moving contact 200 connected to it to move, so that the moving contact 200 and the corresponding stationary contact 300 are attracted together.

[0073] This dual-coil differential driving method achieves opposite magnetic properties by setting the winding directions of the first coil 620 and the second coil 630 to be driven by the same direction of current, thus simplifying the driving circuit and reducing component costs. The integration of the two conductive bars 422 via the conductive element 420 allows them to move synchronously when the pusher 410 actuates, thereby enabling the moving contacts 200 on the two conductive bars 422 to move synchronously and reducing the risk of phase-to-phase short circuits. The conductive element 420 is fixed by a mounting groove 411 whose shape matches its shape. This design simplifies the structure, facilitating installation and disassembly, and provides better fixation, reducing the risk of deformation of the conductive element 420.

[0074] Optionally, see [link to relevant documentation] Figure 2 The electromagnetic system 600 also includes three pins 650. The pins 650 pass through the housing 100, and one end of the pins 650 located inside the housing 100 is electrically connected to the first coil 620 and / or the second coil 630.

[0075] For example, the pin 650 located in the middle position is the common terminal, and this pin 650 is electrically connected to both the first coil 620 and the second coil 630. The pins 650 located on both sides are electrically connected to the first coil 620 and the second coil 630, respectively. By turning on any power supply circuit connected to the pins 650 on both sides, the first coil 620 and the second coil 630 can be turned on.

[0076] Optionally, such as Figure 8 As shown, the electromagnetic system 600 also includes a coil frame 660, with a pin 650 mounted on the coil frame 660. It is worth noting that the assembly between the coil frame 660 and the first coil 620, the second coil 630, and the iron core 610 is prior art, and therefore will not be described in detail further.

[0077] It is understandable that the connecting part 421 and the two conductive bars 422 at its two ends form a U-shaped structure, and correspondingly, the mounting groove 411 also forms a U-shaped structure.

[0078] It is understandable that when a single conductive element 420 is provided, the magnetic latching relay has one set of terminals. Therefore, multiple conductive elements 420 can be provided as needed to meet the requirements of multiple sets of terminals.

[0079] Furthermore, the pushing component may include multiple conductive elements 420, which have different sizes and extend in the same direction (i.e., the openings of the multiple conductive elements 420 are in the same direction). These conductive elements 420 are nested together at intervals from the inside out according to their dimensions. Each conductive element 420 corresponds to a mounting slot 411. Therefore, the multiple mounting slots 411 extend in the same direction and are nested together at intervals from the inside out according to their dimensions. This arrangement fully utilizes the space of the pushing element 410, making the structure of the pushing component 400 more compact.

[0080] Optionally, in one possible embodiment, the actuating component 400 includes two conductive elements 420 of different sizes. The two conductive elements 420 extend in the same direction (i.e., the opening directions of the two conductive elements 420 are the same) and are nested at intervals from the inside to the outside according to their dimensions. Each conductive element 420 is provided with a corresponding mounting groove 411. Therefore, the two mounting grooves 411 extend in the same direction and are nested at intervals from the inside to the outside according to their dimensions.

[0081] Alternatively, in another possible embodiment, the actuating component 400 includes three conductive elements 420 of different sizes. The three conductive elements 420 extend in the same direction (i.e., the opening directions of the three conductive elements 420 are the same) and are nested at intervals from the inside to the outside according to their dimensions. Each conductive element 420 is provided with a corresponding mounting groove 411, therefore, the three mounting grooves 411 extend in the same direction and are nested at intervals from the inside to the outside according to their dimensions.

[0082] Of course, in other possible embodiments, the number of conductive elements 420 in the driving component 400 can also be set to other values, which can be set according to actual needs. This application does not make any specific limitations.

[0083] Furthermore, the conductive element 420 may include a conductive sheet, the two ends of which are bent toward each other to form a connecting portion 421 and two conductive bars 422. This arrangement facilitates processing and makes the conductive bars 422 and the connecting portion 421 form an integral structure, improving the installation stability and deformation resistance of the conductive bars 422.

[0084] Furthermore, such as Figure 6 and Figure 9 As shown, the inner bottom wall of the housing 100 is provided with a first groove 110 extending along the sliding direction of the pusher 410, and the bottom of the pusher 410 is provided with a first slider 412, which is slidably connected to the first groove 110. Through the cooperation of the first slider 412 and the first groove 110, the sliding direction of the pusher 410 can be guided, improving the reliability of the pusher 410 driving the conductive busbar 422, and thus improving the reliability of the engagement and disengagement of the moving contact 200 and the stationary contact 300.

[0085] Optionally, see [link to relevant documentation] Figure 9 A first rib 111 and a second rib 112 extending along the sliding direction of the pusher 410 can be provided on the inner bottom wall of the housing 100. The first rib 111 and the second rib 112 are spaced apart along a direction perpendicular to the sliding direction of the pusher 410 to form a first groove 110. With this configuration, the bottom of the pusher 410 slides in contact with the top of the first rib 111 and the second rib 112, that is, the pusher 410 is raised by the first rib 111 and the second rib 112, which reduces the contact area between the pusher 410 and the housing 100, which helps to reduce frictional resistance and thus improve the smoothness of the movement of the pusher 410. In addition, the provision of the first rib 111 and the second rib 112 can also improve the structural strength of the housing 100.

[0086] Further, see also Figure 4 , Figure 5 and Figure 9 The inner bottom wall of the housing 100 is provided with a slide rail 120 extending along the sliding direction of the pusher 410. A groove 4221 is provided on the side of the conductive busbar 422 near the inner bottom wall of the housing 100, and the conductive busbar 422 is slidably connected to the slide rail 120 through the groove 4221. Through the cooperation of the groove 4221 and the slide rail 120, on the one hand, the movement of the conductive busbar 422 can be guided, improving the reliability of the conductive busbar 422 driving the moving contact 200 and the stationary contact 300 to engage and disengage; on the other hand, the slide rail 120 can support the conductive busbar 422, reducing the risk of bending deformation of the conductive busbar 422, further improving the reliability of the conductive busbar 422 driving the moving contact 200 and the stationary contact 300 to engage and disengage. In addition, the slide rail 120 can also improve the structural strength of the housing 100, thereby reducing the risk of deformation of the housing 100 at high temperatures.

[0087] Furthermore, such as Figures 10-12 As shown, in one possible embodiment, the armature assembly 500 includes an insulating housing 510, an armature 520, and a permanent magnet 530.

[0088] The insulating outer shell 510 is slidably connected to the housing 100, and is connected to and moves synchronously with the pushing member 410. The armature 520 includes a mounting section 521 passing through the insulating outer shell 510 and bent sections 522 located at both ends of the mounting section 521 extending out of the insulating outer shell 510, with the two bent sections 522 arranged opposite to each other. Two armatures 520 are provided, with different sizes. The two armatures 520 extend in the same direction and are nested from the inside out according to their dimensions. A magnetic yoke 640 is provided between the two bent sections 522 of the two armatures that are close to each other. A permanent magnet 530 is installed inside the insulating outer shell 510 and sandwiched between the two armatures 520.

[0089] To facilitate understanding, the working principle of the armature assembly 500 is briefly introduced below:

[0090] See Figure 12 The two bent segments 522 of the small-sized armature 520 are defined as S poles, and the two bent segments 522 of the large-sized armature 520 are defined as N poles.

[0091] Figure 12 When the second coil 630 is energized, the left yoke 640 is magnetized as the N pole and the right yoke 640 is magnetized as the S pole. According to the principle that like poles repel and unlike poles attract, the left yoke 640 (N) magnetically attracts the bent section 522 (S) of the small armature 520 to the left, and the right yoke 640 (S) magnetically repels the bent section 522 (S) of the small armature 520 to the left, causing the armature assembly 500 to slide to the left. Similarly, the left yoke 640 (N) repels the bent section 522 (N) of the large armature 520 to the left, and the right yoke 640 (S) magnetically attracts the bent section 522 (N) of the large armature 520 to the left, causing the armature assembly 500 to slide to the left.

[0092] When the first coil 620 is energized, the left yoke 640 is magnetized as the S pole and the right yoke 640 is magnetized as the N pole. According to the principle that like poles repel and unlike poles attract, the left yoke 640 (S) repels the bent section 522 (S) of the small armature 520 to the right, and the right yoke 640 (N) attracts the bent section 522 (S) of the small armature 520 to the right, causing the armature assembly 500 to slide to the right. Similarly, the left yoke 640 (S) attracts the bent section 522 (N) of the large armature 520 to the right, and the right yoke 640 (N) repels the bent section 522 (N) of the large armature 520 to the right, causing the armature assembly 500 to slide to the right.

[0093] By arranging the yoke 640 between the two bent sections 522, the magnetic force of the yoke 640 acts simultaneously on both armatures 520, improving the reliability of the yoke 640 driving the armature assembly 500. Furthermore, by nesting the two armature assemblies 500 at intervals, the structural compactness of the armature assembly 500 is improved.

[0094] Further, see also Figure 9 , Figure 11 and Figure 12The inner bottom wall of the housing 100 is provided with a second sliding groove 130 extending along the sliding direction of the insulating outer shell 510. At least one of the opposite side walls of the insulating outer shell 510 is provided with a second slider 511, which is slidably connected to the second sliding groove 130. Through the cooperation of the second sliding groove 130 and the second slider 511, the movement of the armature assembly 500 can be guided, thereby improving the reliability of the armature assembly 500 driving the pusher 410 to move.

[0095] Optionally, in one possible embodiment, a second slider 511 is provided on the top or bottom wall of the insulating housing 510. In another possible embodiment, a second slider 511 is provided on both the top and bottom walls of the insulating housing 510. This arrangement allows the insulating housing 510 to be installed without distinguishing between directions, and a sliding connection between the insulating housing 510 and the housing 100 can be achieved in both cases.

[0096] Optionally, see [link to relevant documentation] Figure 9 For the design of providing a first rib 111 and a second rib 112 on the inner bottom wall of the housing 100, a third rib 131 extending along the sliding direction of the armature assembly 500 can also be provided on the inner bottom wall of the housing 100. The third rib 131 and the aforementioned second rib 112 are spaced apart along the sliding direction perpendicular to the armature assembly 500 to form a second sliding groove 130. With this configuration, the bottom of the insulating housing 510 slides in contact with the top of the second rib 112 and the third rib 131, that is, the armature assembly 500 is raised by the second rib 112 and the third rib 131, reducing the contact area between the insulating housing 510 and the housing 100, which helps to reduce frictional resistance and thus improve the smoothness of the movement of the armature assembly 500. In addition, the provision of the third rib 131 can also improve the structural strength of the housing 100.

[0097] Further, see also Figure 6 and Figures 10-12 The insulating shell 510 has a first locking protrusion 512 on the side facing the pushing member 410, and the pushing member 410 has a first locking groove 413 on the side facing the insulating shell 510. The first locking groove 413 engages with the first locking protrusion 512. The connection between the insulating shell 510 and the pushing member 410 is achieved by the engagement of the first locking protrusion 512 and the first locking groove 413. The structure is simple, easy to install and disassemble, and the connection is relatively reliable.

[0098] Optionally, see [link to relevant documentation] Figure 6In one possible embodiment, the first slot 413 extends along the sliding direction (vertical direction) of the vertical pusher 410 and penetrates through the bottom of the pusher 410, and the first protrusion 512 is inserted into the first slot 413 through the bottom opening of the first slot 413. This arrangement facilitates the assembly of the first protrusion 512 with the first slot 413 and prevents the first protrusion 512 from sliding out of the first slot 413 during the sliding process of the pusher 410.

[0099] Furthermore, such as Figure 9 and Figure 13 As shown, the housing 100 has two spaced-apart mounting plates 140. The electromagnetic system 600 is sandwiched between the two mounting plates 140. One side of each mounting plate 140 has a first adhesive dot 141 containing a first adhesive (not shown in the figure). The portion of the electromagnetic system 600 opposite to the first adhesive dot 141 is bonded to the first adhesive. This arrangement facilitates the installation of the electromagnetic system 600 and ensures a more secure installation.

[0100] Optionally, see [link to relevant documentation] Figure 13 In one possible embodiment, two mounting plates 140 clamp and fix the coil frame 660.

[0101] Alternatively, in one possible embodiment, the first adhesive dot 141 is opposite to the magnetic yoke 640.

[0102] Alternatively, in one possible embodiment, the first dispensing portion 141 is a notch located at one corner of the top of the mounting plate 140, which facilitates processing and dispensing.

[0103] Furthermore, such as Figure 9 , Figure 14 and Figure 15 As shown, the housing 100 has multiple spaced partitions 150, each corresponding to a stationary contact 300. Multiple second slots 160 are provided on the sidewalls of the housing 100 opposite to the partitions 150, each corresponding to a partition 150. The stationary contact 300 includes a stationary conductive plate 310 and a stationary contact 320 at one end of the stationary conductive plate 310. The stationary conductive plate 310 is engaged in its corresponding second slot 160. The end of the stationary conductive plate 310 with the stationary contact 320 is placed inside the housing 100, and the side of the stationary conductive plate 310 facing away from the stationary contact 320 abuts against its corresponding partition 150. The stationary conductive plate 310 is installed via the second slots 160, resulting in a simple structure that facilitates installation and disassembly. By supporting the stationary conductive plate 310 with the partition 150, the position of the stationary conductive plate 310 can be restricted, and the stationary conductive plate 310 can be prevented from deforming due to the force of the moving contact 200 during the process of the moving contact 200 and the stationary conductive plate 310 being attracted together.

[0104] Optionally, see [link to relevant documentation] Figure 14 and Figure 15 A limiting portion 151 is provided on the side of the partition 150 facing the static conductive plate 310. The top of the end of the static conductive plate 310 with the static contact 320 extends upward to form an extension portion 311, and the side wall of the extension portion 311 and the top wall of the static conductive plate 310 abut against the limiting portion 151. With this configuration, the limiting portion 151 can limit the displacement of the static conductive plate 310 in both the height direction and the length direction, thereby improving the stability of the static conductive plate 310 installation. Moreover, the structure is simple and facilitates the assembly of the static conductive plate 310.

[0105] Optionally, an "L"-shaped connecting surface is formed between the side wall of the extension 311 and the top wall of the static conductive plate 310 where the extension 311 is not provided, and the limiting part 151 also has an "L"-shaped limiting surface, which cooperates with the "L"-shaped connecting surface.

[0106] Further, see also Figure 14 and Figure 15 Inside the housing 100, baffles 170 are provided on both sides of the static conductive plate 310. The two baffles 170 clamp and fix the static conductive plate 310. A second adhesive dot 171 is provided on the top of the two baffles 170, and a second adhesive is provided in the second adhesive dot 171. The second adhesive is bonded to the static conductive plate 310. By setting two baffles 170 to clamp and fix the static conductive plate 310, the second slot 160 can be used to fix the static conductive plate 310, further improving the stability of the static conductive plate 310 installation and reducing the risk of deformation of the static conductive plate 310. At the same time, the second adhesive bonds the static conductive plate 310 to the baffles 170, further improving the stability of the static conductive plate 310 installation, thereby improving the reliability of the static conductive plate 310 operation.

[0107] Furthermore, such as Figure 16 As shown, the moving contact 200 includes a plurality of moving conductive sheets 210 arranged in sequence and a moving contact 220 connected to all the moving conductive sheets 210. By including a plurality of moving conductive sheets 210 in the moving contact 200, the structural strength of the moving contact 200 is improved.

[0108] It is worth noting that multiple stationary contacts 320 can be provided on the stationary conductive plate 310, and each moving contact 200 can be provided with one moving contact 220, that is, the stationary contacts 320 and the moving contacts 200 are configured in a one-to-one correspondence. Alternatively, each moving contact 200 can be configured to have multiple moving contacts 220, with each moving contact 220 corresponding to a stationary contact 320. This configuration helps to improve the reliability of the engagement between the stationary contact 300 and the moving contact 200.

[0109] Optionally, in this embodiment, each stationary conductive plate 310 is provided with two stationary contacts 320, and each moving contact 200 is provided with one moving contact 220, that is, each stationary contact 300 is provided with two moving contacts 200.

[0110] Optionally, in this embodiment, the moving contact 200 includes three moving conductive sheets 210 arranged in sequence.

[0111] Optionally, in one possible embodiment, a bending portion 211 is provided on a movable conductive sheet 210 near the stationary contact 300, and the bending portion 211 protrudes in the direction close to the stationary contact 300. By providing the bending portion 211 on the movable conductive sheet 210, the deformation resistance of the movable conductive sheet 210 is further improved.

[0112] Alternatively, in another possible embodiment, each of the two adjacent moving conductive sheets 210 near the stationary contact 300 is provided with a bent portion 211, the bent portion 211 protruding towards the stationary contact 300, and the two bent portions 211 are nested together. By nesting the two bent portions 211, the forces of the two bent portions 211 can be superimposed, resulting in higher resistance to deformation and a more compact structure.

[0113] Optionally, in other possible embodiments, bending portions 211 may be provided on all moving conductive sheets 210, with the bending portions 211 protruding towards the stationary contact 300, and multiple bending portions 211 nested together. The specific configuration can be determined according to actual needs, and this application does not impose any specific limitations.

[0114] Furthermore, such as Figure 1 , Figure 9 , Figure 13 and Figure 17 As shown, the magnetic latching relay also includes a top cover 700, which covers the top opening of the housing 100. The top cover 700 has multiple connecting arms 710 circumferentially, each with a third locking groove 711. The outer peripheral wall of the housing 100 has multiple limiting grooves 180, each corresponding to a connecting arm 710. Each limiting groove 180 contains a second locking protrusion 190, and the connecting arm 710 engages with its corresponding limiting groove 180. Furthermore, the third locking groove 711 engages with the corresponding second locking protrusion 190. This arrangement creates a "dual connection structure" between the top cover 700 and the housing 100: a "first connection structure" formed by the connecting part 421 and the limiting groove 180, and a "second connection structure" formed by the second locking protrusion 190 and the third locking groove 711. This significantly improves the reliability of the connection between the top cover 700 and the housing 100.

[0115] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A magnetic latching relay, characterized in that, include: Casing (100); Multiple moving contacts (200) and multiple stationary contacts (300) are provided, with the moving contacts (200) and the stationary contacts (300) corresponding to each other, and the multiple stationary contacts (300) are mounted on the housing (100); A pushing component (400) is slidably connected to the housing (100). The pushing component (400) includes a pushing member (410) and a conductive member (420). The conductive member (420) includes a connecting part (421) and conductive bars (422) located at both ends of the connecting part (421) and arranged opposite to each other. The ends of the conductive bars (422) are connected to the moving contact (200). The pushing member (410) is provided with a mounting groove (411) that matches the shape of the conductive member (420). The connecting part (421) and part of the conductive bars (422) are engaged in the mounting groove (411). An armature assembly (500) is movably connected to the housing (100) and connected to the pusher (410); An electromagnetic system (600) is installed inside the housing (100). The electromagnetic system (600) includes an iron core (610), a first coil (620) sleeved on the iron core (610), a second coil (630) sleeved outside the first coil (620), and magnetic yokes (640) disposed at both ends of the iron core (610). The first coil (620) and the second coil (630) are wound in opposite directions. When the first coil (620) is energized, the armature assembly (500) drives the pusher (410) under the magnetic force of the two yokes (640) to separate the moving contact (200) from the corresponding stationary contact (300); when the second coil (630) is energized, the armature assembly (500) drives the pusher (410) under the magnetic force of the two yokes (640) to attract the moving contact (200) to the corresponding stationary contact (300).

2. The magnetic latching relay according to claim 1, characterized in that, The pushing component (400) includes a plurality of conductive elements (420) of different sizes. The plurality of conductive elements (420) extend in the same direction and are nested at intervals from the inside to the outside according to their size. Each conductive element (420) is provided with a mounting groove (411). The plurality of mounting grooves (411) extend in the same direction and are nested at intervals from the inside to the outside according to their size.

3. The magnetic latching relay according to claim 1, characterized in that, The conductive element (420) includes a conductive sheet, the two ends of which are bent toward each other to form the connecting portion (421) and two conductive bars (422); And / or, the inner bottom wall of the housing (100) is provided with a first groove (110) extending along the sliding direction of the pusher (410), and the bottom of the pusher (410) is provided with a first slider (412), and the first slider (412) is slidably connected to the first groove (110); And / or, the inner bottom wall of the housing (100) is provided with a slide rail (120) extending along the sliding direction of the pusher (410), and the conductive bus (422) is provided with a groove (4221) on the side near the inner bottom wall of the housing (100), and the conductive bus (422) is slidably connected to the slide rail (120) through the groove (4221).

4. The magnetic latching relay according to claim 1, characterized in that, The armature assembly (500) includes: An insulating outer shell (510) is slidably connected to the housing (100), and the insulating outer shell (510) is connected to the pusher (410) and moves synchronously with the pusher (410); An armature (520) includes a mounting section (521) passing through the insulating shell (510) and bent sections (522) located at both ends of the mounting section (521) extending out of the insulating shell (510), the two bent sections (522) being arranged opposite to each other; there are two armatures (520), the two armatures (520) are of different sizes, the two armatures (520) extend in the same direction and are nested from the inside to the outside according to their size, and a magnetic yoke (640) is provided between the two bent sections (522) of the two armatures (520) that are close to each other; A permanent magnet (530) is installed inside the insulating housing (510) and sandwiched between the two armatures (520).

5. The magnetic latching relay according to claim 4, characterized in that, The inner bottom wall of the housing (100) is provided with a second sliding groove (130) extending along the sliding direction of the insulating outer shell (510), and at least one of the opposite side walls of the insulating outer shell (510) is provided with a second slider (511), and the second slider (511) is slidably connected to the second sliding groove (130). And / or, the insulating shell (510) has a first latching protrusion (512) on the side facing the pusher (410), and the pusher (410) has a first latching groove (413) on the side facing the insulating shell (510), and the first latching groove (413) engages with the first latching protrusion (512).

6. The magnetic latching relay according to any one of claims 1-5, characterized in that, The housing (100) is provided with two spaced mounting plates (140), and the electromagnetic system (600) is sandwiched between the two mounting plates (140). One side of the mounting plate (140) is provided with a first adhesive part (141), and the first adhesive part (141) is provided with a first adhesive. The part of the electromagnetic system (600) opposite to the first adhesive part (141) is bonded to the first adhesive.

7. The magnetic latching relay according to any one of claims 1-5, characterized in that, The housing (100) is provided with a plurality of spaced partitions (150), each partition (150) corresponding to a stationary contact (300). The housing (100) is provided with a plurality of second slots (160) on the sidewall opposite to the plurality of partitions (150), each second slot (160) corresponding to a partition (150). The stationary contact (300) includes a stationary conductive plate (310) and a stationary contact (320) disposed at one end of the stationary conductive plate (310). The stationary conductive plate (310) is snapped into the corresponding second slot (160). The end of the stationary conductive plate (310) with the stationary contact (320) is placed inside the housing (100). The side of the stationary conductive plate (310) away from the stationary contact (320) abuts against the corresponding partition plate (150).

8. The magnetic latching relay according to claim 7, characterized in that, The partition (150) has a limiting part (151) on the side facing the static conductive plate (310); the top of the end of the static conductive plate (310) with the static contact (320) extends upward to form an extension part (311), and the side wall of the extension part (311) and the top wall of the static conductive plate (310) abut against the limiting part (151). And / or, within the housing (100), baffles (170) are provided on both sides of the static conductive plate (310), the two baffles (170) clamp and fix the static conductive plate (310), and a second adhesive part (171) is provided on the top of the two baffles (170), the second adhesive part (171) contains a second adhesive, and the second adhesive is bonded to the static conductive plate (310).

9. The magnetic latching relay according to any one of claims 1-5, characterized in that, The moving contact (200) includes a plurality of moving conductive sheets (210) arranged in sequence and a moving contact (220) connected to all the moving conductive sheets (210); At least one of the moving conductive sheets (210) near the stationary contact (300) is provided with a bending portion (211), and the bending portion (211) protrudes in the direction close to the stationary contact (300); when multiple moving conductive sheets (210) are provided with the bending portion (211), the multiple bending portions (211) are nested together.

10. The magnetic latching relay according to any one of claims 1-5, characterized in that, The magnetic latching relay also includes a top cover (700) which covers the top opening of the housing (100); The top cover (700) is provided with a plurality of connecting arms (710) in the circumferential direction. Each connecting arm (710) is provided with a third slot (711). The outer peripheral wall of the housing (100) is provided with a plurality of limiting slots (180). Each limiting slot (180) is provided with a corresponding connecting arm (710). Each limiting slot (180) is provided with a second protrusion (190). The connecting arm (710) is engaged in the limiting slot (180) corresponding to it, and the third slot (711) is engaged with the corresponding second protrusion (190).

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