OUTPUT STRUCTURE AND MAGNETIC LOCKING RELAY

Abstract

The invention relates to a lead structure and a magnetic latching relay. The lead structure consists of a lead and at least one auxiliary part. The lead has a first lead and a second lead, one end of the second lead being connected to one side of the first lead. In terms of the width of the lead, the width of the second lead is less than the width of the first lead. The first lead is used to electrically connect to the fixed contact of the relay. At least one auxiliary part is fixedly connected to the second lead, wherein the lead is formed by a stamping process, and the auxiliary part is formed by using the remaining material after the lead is formed by a stamping process. The lead structure of the invention allows for simplification of the fabrication process, reduction of the impedance of the load circuit, increase of the current-carrying area, reduction of temperature rise, material savings, and cost reduction.

Description

Lead structure and magnetic latching relay

[0001] This disclosure claims priority to Chinese patent application No. 202311378653.9 filed on October 23, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the technical field of relays, and in particular to a lead-out structure and a magnetic latching relay. Background Art

[0003] A latching relay is an automatic switch that switches a circuit on and off. It includes a lead structure for electrically connecting to a load circuit.

[0004] In the related art, the lead-out structure includes a connecting piece and a round copper rod, and the round copper rod and the connecting piece are connected by welding. The connecting piece is used to connect to the static spring part in the relay, and the round copper rod is used to connect to the external load circuit. However, due to the sudden change in the conductive cross-section material at the connection between the round copper rod and the connecting piece, the current density between the two is inconsistent, which increases the impedance of the load circuit. In the related art, the lead-out structure is generally connected to a larger-sized AC transformer. Due to size limitations, it is difficult to install a smaller-sized AC transformer. Moreover, after the connecting piece is formed in the preparation process, the remaining material will be wasted, and the cost of the copper rod is also high, which increases the cost of the product.

[0005] The above information disclosed in this Background section is only for enhancement of understanding of the background of the present disclosure and therefore it may include information that does not constitute the relevant technology that is already known to a person of ordinary skill in the art.

[0006] Public content

[0007] The embodiments of the present disclosure provide a lead-out structure and a magnetic latching relay, which can reduce the impedance of a load circuit and save costs.

[0008] The present disclosure provides a lead structure comprising a lead member and at least one auxiliary member. The lead member comprises a first lead portion and a second lead portion, one end of the second lead portion being connected to a side of the first lead portion; the width of the second lead portion is smaller than the width of the first lead portion; the first lead portion is electrically connected to a static spring portion of a relay; and at least one auxiliary member is fixedly connected to the second lead portion. The lead member is formed by a stamping process, and the auxiliary member is formed from material remaining after the lead member is formed by the stamping process.

[0009] In some embodiments of the present disclosure, the first lead-out portion is a plate-shaped structure, and in a thickness direction of the lead-out member, the thickness of the first lead-out portion is the same as the thickness of the second lead-out portion.

[0010] In some embodiments of the present disclosure, in the thickness direction of the lead-out piece, the first lead-out portion has a first surface and a second surface opposite to the first surface, and the second lead-out portion has a third surface and a fourth surface opposite to the third surface, wherein the first surface is flush with the third surface, and the second surface is flush with the fourth surface.

[0011] In some embodiments of the present disclosure, in the width direction of the lead-out piece, a side surface of the first lead-out portion is flush with a side surface of the second lead-out portion.

[0012] In some embodiments of the present disclosure, the auxiliary member is a plate-like structure, and the auxiliary member is laid flat on the third surface of the second lead-out portion; in the width direction of the lead-out portion, the width of the auxiliary member is less than or equal to the width of the second lead-out portion.

[0013] In some embodiments of the present disclosure, the auxiliary part and the second lead-out portion are used to connect an AC transformer, and the total thickness of the auxiliary part and the second lead-out portion is less than or equal to the diameter of the mounting hole of the AC transformer; the maximum width of the second lead-out portion and the auxiliary part is less than or equal to the diameter of the mounting hole of the AC transformer.

[0014] In some embodiments of the present disclosure, there are multiple auxiliary parts, and the multiple auxiliary parts are arranged on one side or two opposite sides of the second lead-out portion.

[0015] In some embodiments of the present disclosure, the length of the auxiliary member is the same as the length of the second lead-out portion.

[0016] An embodiment of the present disclosure also provides a magnetic holding relay, comprising: a base; a contact structure, arranged on the base, the contact structure comprising two parallel springs, each of the springs comprising a static spring portion and a dynamic spring portion; the lead-out structure described in any of the above embodiments, wherein the first lead-out portion of the lead-out structure is connected to one end of the static spring portion, and the second lead-out portion of the lead-out structure extends out of the base from the side of the base; an AC transformer, arranged outside the base, the AC transformer having a mounting hole, the second lead-out portion and an auxiliary part of the lead-out structure being inserted into the mounting hole, and the second lead-out portion and the end of the auxiliary part away from the first lead-out portion extend out of the mounting hole.

[0017] In some embodiments of the present disclosure, the magnetic holding relay further includes: a push card, which is provided on the base, one end of the push card is connected to the dynamic spring portion, and the push card is located below the second lead-out portion and can move below the second lead-out portion.

[0018] It can be seen from the above technical solutions that the present disclosure has at least one of the following advantages and positive effects:

[0019] In the disclosed embodiment, the lead-out part is formed by a stamping process, so that the first lead-out part and the second lead-out part can be formed by a single stamping process, which simplifies the process and eliminates the need to separately provide the second lead-out part. Furthermore, the first lead-out part and the second lead-out part are made of the same material, so their current densities are the same, which reduces the impedance of the load circuit. By fixedly connecting the auxiliary part to the second lead-out part, the current-carrying area is increased, thereby reducing the temperature rise. At the same time, the second lead-out part can be set narrower, so as to facilitate insertion into a smaller-sized AC transformer. In addition, the auxiliary part is formed using the remaining material after the lead-out part is formed by the stamping process, which saves material and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and other features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

[0021] FIG1 is an exploded schematic diagram of a lead-out structure shown in some embodiments of the present disclosure;

[0022] FIG2 is a schematic top view of an exploded lead structure according to some embodiments of the present disclosure;

[0023] FIG3 is a schematic side view of an exploded lead structure shown in some embodiments of the present disclosure;

[0024] FIG4 is a schematic diagram of a three-dimensional structure of an assembled lead-out structure shown in some embodiments of the present disclosure;

[0025] FIG5 is a schematic diagram of a three-dimensional structure of an assembled lead-out structure with two auxiliary parts shown in some embodiments of the present disclosure;

[0026] FIG6 is a schematic diagram showing the connection between the lead-out structure, the AC transformer, and the static spring portion according to some embodiments of the present disclosure;

[0027] FIG7 is a schematic diagram of the three-dimensional structure of a magnetic latching relay shown in some embodiments of the present disclosure;

[0028] FIG8 is a schematic diagram of the three-dimensional structure of a magnetic latching relay without an AC transformer, shown in some embodiments of the present disclosure;

[0029] FIG9 is a schematic top view of a magnetic latching relay without an AC transformer, shown in some embodiments of the present disclosure;

[0030] FIG10 is a schematic diagram of a magnetic latching relay without a base and an AC transformer shown in some embodiments of the present disclosure;

[0031] FIG11 is a schematic structural diagram of a lead-out structure, a base, and a push card according to some embodiments of the present disclosure.

[0032] Description of reference numerals:

[0033] In the figure: 100, lead-out structure; 10, lead-out part; 1, first lead-out part; 101, first surface; 102, second surface; 2, second lead-out part; 201, third surface; 202, fourth surface; 203, protrusion; 3, auxiliary part; 301, fifth surface; 302, sixth surface; 303, rivet hole; 200, AC transformer; 300, base; 400, coil assembly; 401, coil frame; 402, coil; 500, contact structure; 501, moving spring part; 502, moving contact; 503, static spring part; 504, static contact; 505, compression spring; 600, magnetic circuit structure; 601, yoke; 602, armature; 603, permanent magnet; 604, swing arm; 700, push card; 800, lead-out pin; X, length direction; Y, width direction; Z, thickness direction. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0035] To make the solution clearer, we first briefly describe the structure of the magnetic latching relay. Referring to Figure 7, a schematic diagram of the three-dimensional structure of a magnetic latching relay is shown (excluding the housing). The magnetic latching relay includes a base 300 and a coil assembly 400, a contact structure 500, a magnetic circuit structure 600, a push card 700, and a lead-out structure 100 provided on the base 300. The coil assembly 400 includes an iron core (not shown), a coil frame 401, and a coil 402. The coil 402 is wound around the outer surface of the coil frame 401, and the iron core is placed inside the coil frame 401.

[0036] The magnetic circuit structure 600 includes a yoke 601, an armature 602, a permanent magnet 603, and a swing arm 604. The yoke 601 is fixedly mounted on the base 300. There are two yokes 601, one at each end of the coil frame 401 and in contact with the iron core. The permanent magnet 603 is located on one side of the coil assembly 400. The two ends of the permanent magnet 603 are connected to the armature 602, and the permanent magnet 603 and the armature 602 are fixedly connected together by an injection molding process to form an injection molding part. The injection molding part has two rotating shafts on opposite sides, one of which is inserted through an axial hole on the base 300, and the other is inserted through an axial hole on the fixed frame, so that the injection molding part can rotate. The injection molding part also includes two swing arms 604 located on both sides of the permanent magnet 603.

[0037] As shown in Figure 9, contact structure 500 includes two parallel springs. Each spring has a movable spring portion 501 and a stationary spring portion 503. The movable spring portion 501 is provided with a movable contact 502, and the stationary spring portion 503 is provided with a stationary contact 504. The movable contact of one spring corresponds to the stationary contact of the other spring, and the stationary contact of one spring corresponds to the movable contact of the other spring. Contact structure 500 also includes a compression spring 505, which is connected to the movable spring portion 501.

[0038] The push card 700 is provided on the base 300, one end of which is connected to the compression spring 505, and the other end can be movably connected to the swing arm 604 of the injection molded part. When the swing arm 604 swings, it can drive the push card 700 to move, and then drive the dynamic spring part 501 to move through the compression spring 505.

[0039] One end of the lead structure 100 is connected to the static spring portion 503 , and the other end is connected to the load circuit.

[0040] When a positive pulse voltage is applied to coil 402, permanent magnet 603 swings to one side, simultaneously driving armature 602 to swing, causing armature 602 to overlap yoke 601 on either side. The permanent magnet 603, armature 602, yoke 601, and iron core form a complete magnetic field. Simultaneously, permanent magnet 603 drives swing arm 604 to swing, which in turn drives pusher 700. Pusher 700, via compression spring 505, pushes movable spring portion 501, causing the movable contact 502 of one reed to contact the stationary contact 504 of the other reed. This closes the two reeds, closing the relay. Current flows through stationary spring portion 503 and into lead-out structure 100, turning the external load circuit on. When coil 402 is de-energized, permanent magnet 603 maintains this magnetic field, thereby maintaining the position of swing arm 604 and, consequently, maintaining contact between movable contact 502 and stationary contact 504.

[0041] When a reverse pulse voltage is applied to coil 402, permanent magnet 603 swings to the opposite side, simultaneously driving armature 602 to swing in the opposite direction. This allows armature 602 to still overlap yoke 601 on either side, forming another complete magnetic field. Simultaneously, the permanent magnet drives swing arm 604 to swing, which in turn drives pusher 700 in the opposite direction. Pusher 700 pulls on movable spring 501, disconnecting the movable contact 502 of one reed from the static contact 504 of the other. This disconnects the two reeds, disconnects the relay, and disconnects the current flowing through lead-out structure 100, disconnecting the external load circuit. When coil 402 is de-energized, permanent magnet 603 maintains this magnetic field, thereby maintaining the position of swing arm 604 and, consequently, keeping movable contact 502 and static contact 504 disconnected.

[0042] The lead-out structure 100 of the embodiment of the present disclosure is described in detail below. As shown in FIG1 to FIG4 , the lead-out structure 100 includes a lead-out member 10 and at least one auxiliary member 3 .

[0043] In some embodiments, the lead member 10 includes a first lead portion 1 and a second lead portion 2. One end of the second lead portion 2 is connected to a side of the first lead portion 1. In the width direction Y of the lead member 10, the width of the second lead portion 2 is smaller than the width of the first lead portion 1. The first lead portion 1 is electrically connected to the static spring portion 503 of the magnetic latching relay. At least one auxiliary component 3 is fixedly connected to the second lead portion 2. The lead member 10 is formed by a stamping process, and the auxiliary component 3 is formed from the remaining material after the lead member 10 is stamped.

[0044] Stamping is a metal processing method based on the plastic deformation of metal. It uses molds and stamping equipment to apply pressure to the sheet material to cause plastic deformation or separation of the sheet material, thereby obtaining parts (stamping parts) with a certain shape, size and performance.

[0045] As shown in FIG1 , after the lead-out piece 10 is formed by punching using a punching process, part of the material is removed. This part of the material can be referred to as the remaining material. The remaining material is further punched to form the auxiliary piece 3 mentioned above.

[0046] In some embodiments, the auxiliary member 3 can be fixedly connected to the second lead-out portion 2 by riveting, threading, or welding. As shown in FIG1 , when the auxiliary member 3 is riveted to the second lead-out portion 2, a protrusion 203 can be provided on the second lead-out portion 2, and a rivet hole 303 can be provided on the auxiliary member 3.

[0047] In some embodiments, the first lead-out portion 1 is a plate-shaped structure, and in the thickness direction Z of the lead-out member 10 , the thickness of the first lead-out portion 1 is the same as the thickness of the second lead-out portion 2 .

[0048] As shown in Figure 1 , when the lead member 10 is stamped from a single plate-like structure, the first lead portion 1 and the second lead portion 2 have the same thickness. Of course, the thicknesses of the first lead portion 1 and the second lead portion 2 can also differ, for example, the second lead portion 2 can be thinner or thicker than the first lead portion 1. The combined thickness of the second lead portion 2 and the auxiliary member 3 can be further adjusted to allow both to fit within the AC transformer 200.

[0049] In some embodiments, as shown in Figures 1 and 3, in the thickness direction Z of the lead-out member 10, the first lead-out portion 1 has a first surface 101 and a second surface 102 opposite to the first surface 101, and the second lead-out portion 2 has a third surface 201 and a fourth surface 202 opposite to the third surface 201, wherein the first surface 101 is flush with the third surface 201, and the second surface 102 is flush with the fourth surface 202.

[0050] As shown in Figures 1 and 3, the first surface 101 of the first lead-out part 1 is flush with the second surface 102 of the second lead-out part 2, and the second surface 102 of the first lead-out part 1 is flush with the fourth surface 202 of the second lead-out part 2. That is, there is no angle between the first lead-out part 1 and the second lead-out part 2, or the angle is 180°, which can simplify the manufacturing process.

[0051] In some embodiments, the first surface 101 of the first lead portion 1 may not be flush with the third surface 201 of the second lead portion 2, that is, the third surface 201 of the second lead portion 2 may be recessed or protruding relative to the first surface 101 of the second lead portion 2, or there may be an angle between the first lead portion 1 and the second lead portion 2, for example, the second lead portion 2 may be tilted relative to the first lead portion 1. Those skilled in the art may configure the configuration based on actual conditions, for example, based on the connection points of the load circuit, the space occupied by the relay, etc., and this is not particularly limited here.

[0052] In some embodiments, in the width direction Y of the lead-out member 10 , a side surface of the first lead-out portion 1 is flush with a side surface of the second lead-out portion 2 .

[0053] As shown in Figure 2 , the width of the second lead portion 2 is smaller than that of the first lead portion 1. The second lead portion 2 is located to one side of the first lead portion 1, that is, one side surface of the first lead portion 1 is flush with one side surface of the second lead portion 2, so that the first lead portion 1 protrudes relative to the second lead portion 2 in the width direction Y. Since the first lead portion 1 is used to connect to the static spring portion 503, as shown in Figures 7 and 8 , the first lead portion 1 needs to be placed in the base 300 of the magnetic latching relay, and the second lead portion 2 extends from one side of the base 300. Therefore, the side surface of the first lead portion 1 is flush with the side surface of the second lead portion 2, which facilitates the placement of the relay cover on the base 300 and facilitates the processing of the lead member 10.

[0054] In some embodiments, the side surfaces of the first lead portion 1 and the second lead portion 2 may not be flush. For example, the side surfaces of the second lead portion 2 may be recessed or protruded relative to the side surfaces of the first lead portion 1. This is acceptable as long as the first lead portion 1 can connect to the static spring portion 503 and the second lead portion 2 can extend out of the base 300 without interfering with the installation of the relay. Of course, if the second lead portion 2 and the auxiliary component 3 can pass through the AC transformer 200, the width of the second lead portion 2 and the auxiliary component 3 should be as wide as possible to increase the current-carrying area and reduce temperature rise.

[0055] In some embodiments, as shown in Figure 3, the auxiliary part 3 is a plate-like structure, and the auxiliary part 3 is flat on the third surface 201 of the second lead-out part 2; in the width direction Y of the lead-out part 10, the width of the auxiliary part 3 is less than or equal to the width of the second lead-out part 2.

[0056] As shown in FIG3 , the auxiliary member 3 is a plate-like structure having a fifth surface 301 and a sixth surface 302 opposite to the fifth surface 301. The auxiliary member 3 being laid flat on the third surface 201 of the second lead-out portion 2 can be understood as meaning that after the auxiliary member 3 is mounted on the second lead-out portion 2, the sixth surface 302 of the auxiliary member 3 is in contact with the third surface 201 of the second lead-out portion 2.

[0057] In some embodiments, the width of the auxiliary member 3 in the width direction Y of the lead member 10 is equal to the width of the second lead portion 2. In this case, the width of the first lead portion 1 can just fit through the mounting hole of the AC transformer 200. That is, the width of the first lead portion 1 and the auxiliary member 3 are set to the maximum, which can increase the current-carrying area and reduce the temperature rise.

[0058] In other embodiments, the width of the auxiliary member 3 may be greater or less than the width of the second lead portion 2. Regardless of the widths of the auxiliary member 3 and the second lead portion 2, the auxiliary member 3 can be installed on the second lead portion 2 and pass through the AC transformer 200.

[0059] In some embodiments, as shown in Figures 6 and 7 , the auxiliary member 3 and the second lead portion 2 are used to connect an AC transformer 200. The total thickness of the auxiliary member 3 and the second lead portion 2 is less than or equal to the diameter of the mounting hole of the AC transformer 200. The maximum width of the second lead portion 2 and the auxiliary member 3 is less than or equal to the diameter of the mounting hole of the AC transformer 200. The AC transformer 200 functions as a current meter.

[0060] As shown in Figure 6, the AC transformer 200 has a mounting hole in its center, through which the auxiliary component 3 and the second lead portion 2 can pass, allowing the AC transformer 200 to be mounted on the second lead portion 2 and the auxiliary component 3. Therefore, the combined thickness of the auxiliary component 3 and the second lead portion 2 must be less than or equal to the diameter of the mounting hole, and the maximum width of the second lead portion 2 and the auxiliary component 3 must be less than or equal to the diameter of the mounting hole.

[0061] The mounting hole can be circular or rectangular. When the mounting hole is circular, the sixth surface 302 of the auxiliary component 3 can be flat, conforming to the third surface 201 of the second lead-out portion 2. The two side surfaces and the fifth surface 301 of the auxiliary component 3 can be curved to fit the circular hole and maximize the thickness of the auxiliary component 3, increasing its current-carrying area. When the mounting hole is rectangular, the auxiliary component 3 can be a rectangular plate-like structure.

[0062] In some embodiments, there are multiple auxiliary components 3 , and the multiple auxiliary components 3 are disposed on one side or two opposite sides of the second lead-out portion 2 .

[0063] As shown in Figure 5, the number of auxiliary parts 3 can be two, three, four, five, six or more. Multiple auxiliary parts 3 can be arranged on one side of the second lead-out part 2. For example, multiple auxiliary parts 3 are all arranged on the third surface 201 of the second lead-out part 2. Alternatively, multiple auxiliary parts 3 are arranged on opposite sides of the second lead-out part 2, that is, multiple auxiliary parts 3 are arranged on the third surface 201 and the fourth surface 202 of the second lead-out part 2. The thickness and width of each auxiliary part 3 can be different. For example, when the mounting hole of the AC transformer 200 is a circular hole, the thickness and width of the auxiliary parts 3 in the direction away from the second lead-out part 2 can be gradually reduced. In order to be able to pass through the mounting hole, more auxiliary parts 3 can be arranged, further increasing the current-carrying area and reducing the temperature rise. Of course, the thickness and width of the multiple auxiliary parts 3 can also be the same. Those skilled in the art can set them according to actual conditions, and no special limitation is made here.

[0064] In some embodiments, in the length direction X of the lead-out member 10, the length of the auxiliary member 3 is the same as the length of the second lead-out portion 2. In this way, the length of the auxiliary member 3 is maximized to increase the current-carrying area and reduce the temperature rise. As shown in Figure 8, when the lead-out structure 100 is applied to a relay, part of the second lead-out portion 2 and the auxiliary member 3 are located outside the base 300, and the end of the second lead-out portion 2 and the auxiliary member 3 away from the first lead-out portion 1 is connected to the lead-out pin 800, and the lead-out pin 800 is used to connect to an external load circuit. In the embodiment of the present disclosure, the end face of the auxiliary member 3 away from the first lead-out portion 1 is flush with the end face of the second lead-out portion 2 away from the first lead-out portion 1, so that the load current can flow smoothly through the lead-out pin 800.

[0065] In summary, in the embodiment of the present disclosure, the lead-out part 10 is formed by a stamping process, so that the first lead-out part 1 and the second lead-out part 2 can be formed by a single stamping process, which simplifies the process and eliminates the need to separately set the second lead-out part 2. For example, there is no need to set a round copper rod. Moreover, the first lead-out part 1 and the second lead-out part 2 are made of the same material, so the current density of the two is the same, which reduces the impedance of the load circuit. By fixedly connecting the auxiliary part 3 to the second lead-out part 2, the current-carrying area is increased, thereby reducing the temperature rise. At the same time, the second lead-out part 2 can be set narrower, so as to facilitate insertion into a smaller-sized AC mutual inductor 200. In addition, the auxiliary part 3 is formed by utilizing the remaining material after the lead-out part 10 is formed by the stamping process, which saves material and reduces costs.

[0066] The present disclosure also provides a magnetic latching relay, as shown in Figures 7 and 8. The magnetic latching relay includes a base 300, a contact structure 500, a lead structure 100, and an AC transformer 200. The contact structure 500 is disposed on the base 300 and includes two parallel springs, each having a static spring portion 503 and a dynamic spring portion 501. The lead structure 100 is the lead structure described in any of the above embodiments. The first lead portion 1 of the lead structure 100 is connected to one end of the static spring portion 503 of one of the two parallel springs, and the second lead portion 2 of the lead structure 100 extends from the side of the base 300. The AC transformer 200 is disposed outside the base 300. The AC transformer 200 has a mounting hole, and the second lead portion 2 and the auxiliary component 3 are inserted into the mounting hole, with the ends of the second lead portion 2 and the auxiliary component 3 distal from the first lead portion 1 extending out of the mounting hole.

[0067] The relay structure of the embodiment of the present disclosure is the same as the structure of the relay described in the above embodiment. For example, the relay also includes the magnetic circuit structure 600, the push card 700 and the coil 402 of the above embodiment, which will not be described in detail here.

[0068] As shown in Figures 8 to 10, the magnetic holding relay of the embodiment of the present disclosure also includes a push card 700, which is provided on the base 300. One end of the push card 700 is connected to the dynamic spring portion 501. The push card 700 is located below the second lead-out portion 2 of the lead-out structure 100 and can move below the second lead-out portion 2.

[0069] As shown in FIG8 , the contact structure 500 of the disclosed embodiment further includes a compression spring 505, which is disposed on the movable spring portion 501. One end of the push card 700 is connected to the compression spring 505, and the connection with the movable spring portion 501 is achieved through the compression spring 505. The other parts of the push card 700 are connected to the swing arm of the magnetic circuit structure 600. When a positive pulse voltage is applied to the coil 402, the swing arm 604 of the magnetic circuit structure 600 drives the push card 700 to move. The push card 700 pushes the movable spring portion 501 via the compression spring 505, causing the movable contact 502 on the movable spring portion 501 of one reed to close with the static contact 504 on the static spring portion 503 of the other reed, thereby closing the relay. The load current flows through the static spring portion 503 through the lead-out structure 100, causing the external load circuit to conduct.

[0070] To more clearly illustrate the connection between the lead structure 100 and the static spring portion 503, Figure 10 shows the structure of the magnetic latching relay without the base 300. Figure 11 shows only the base 300, the push card 700, and the lead structure 100. As shown in Figures 10 and 11, the second lead portion 2 of the lead member 10 is partially located within the base 300, and the push card 700 is located below this portion of the second lead portion 2 and does not contact the second lead portion 2. The push card 700 can move with the swing arm 604. Therefore, the second lead portion 2 gives way to the push card 700, ensuring smooth movement of the push card 700.

[0071] In some embodiments, as shown in Figures 9 and 10, a magnetic latching relay includes two contact structures 500 and two lead structures 100, each lead structure 100 being connected to a static spring portion 503 in each contact structure 500. One end of a push card 700 is connected to a movable spring portion 501 of one contact structure 500 (e.g., via a compression spring 505), and the other end is connected to a movable spring portion 501 of another contact structure 500 (e.g., via another compression spring 505). The swing arm 604 can be movably connected to a portion of the push card 700 located between the two ends.

[0072] In some embodiments, as shown in Figures 8 to 10 , the magnetic latching relay may further include a lead pin 800. Lead pin 800 is connected to the second lead portion 2 and the end of the auxiliary component 3. Lead pin 800 is used to connect to an external load circuit. For example, lead pin 800 can be plugged into a socket of a load to achieve an electrical connection.

[0073] In summary, the first lead portion 1, second lead portion 2, and auxiliary component 3 of the lead structure 100 of the magnetic latching relay in the disclosed embodiment are constructed of the same material, ensuring uniform current density and reducing the impedance of the load circuit. By securely connecting the auxiliary component 3 to the second lead portion 2, the current-carrying area is increased and the temperature rise is reduced. Furthermore, the second lead portion 2 can be narrowed, enabling the magnetic latching relay to be configured with a smaller AC transformer 200. The lead structure 100 is formed using a stamping process, saving material and reducing costs.

[0074] It is understandable that the various embodiments / implementations provided in the present disclosure can be combined with each other without causing any contradiction, and they will not be illustrated one by one here.

[0075] In the embodiments of the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0076] In the description of the embodiments of the present disclosure, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the embodiments of the present disclosure.

[0077] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the disclosed embodiments. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0078] The above is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will appreciate that various modifications and variations of the present disclosure are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A lead-out structure, comprising: A lead-out member, the lead-out member comprising a first lead-out portion and a second lead-out portion, one end of the second lead-out portion being connected to one side of the first lead-out portion; In the width direction of the lead-out piece, the width of the second lead-out portion is smaller than the width of the first lead-out portion; the first lead-out portion is used to be electrically connected to the static spring portion of the relay; at least one auxiliary member fixedly connected to the second lead-out portion; The lead-out piece is formed by a stamping process, and the auxiliary piece is formed by utilizing the remaining material after the lead-out piece is formed by the stamping process.

2. The lead-out structure according to claim 1, wherein: The first lead-out portion is a plate-shaped structure, and in a thickness direction of the lead-out member, a thickness of the first lead-out portion is the same as a thickness of the second lead-out portion.

3. The lead-out structure according to claim 2, wherein: In the thickness direction of the lead-out piece, the first lead-out portion has a first surface and a second surface opposite to the first surface, and the second lead-out portion has a third surface and a fourth surface opposite to the third surface, wherein the first surface is flush with the third surface, and the second surface is flush with the fourth surface.

4. The lead-out structure according to claim 2 or 3, wherein: In the width direction of the lead-out piece, a side surface of the first lead-out portion is flush with a side surface of the second lead-out portion.

5. The lead-out structure according to claim 3, wherein: The auxiliary member is a plate-shaped structure, and the auxiliary member is laid flat on the third surface of the second lead-out portion; In the width direction of the lead-out member, a width of the auxiliary member is smaller than or equal to a width of the second lead-out portion.

6. The lead-out structure according to claim 1, wherein: The auxiliary part and the second lead-out part are used to connect an AC transformer, and the total thickness of the auxiliary part and the second lead-out part is less than or equal to the diameter of the mounting hole of the AC transformer; the maximum width of the second lead-out part and the auxiliary part is less than or equal to the diameter of the mounting hole of the AC transformer.

7. The lead-out structure according to claim 1, wherein: There are multiple auxiliary parts, and the multiple auxiliary parts are arranged on one side or two opposite sides of the second lead-out portion.

8. The lead-out structure according to claim 1, wherein: The length of the auxiliary member is the same as the length of the second lead-out portion.

9. A magnetic latching relay, comprising: Base; A contact structure is disposed on the base, the contact structure comprising two parallel springs, each of the springs having a static spring portion and a dynamic spring portion; The lead-out structure according to any one of claims 1 to 8, wherein the first lead-out portion of the lead-out structure is connected to one end of the static spring portion of one of the two parallel spring pieces, and the second lead-out portion of the lead-out structure is connected from the base The base is extended laterally; An AC transformer is arranged outside the base, and the AC transformer has a mounting hole. The second lead-out portion and the auxiliary component of the lead-out structure are inserted into the mounting hole, and the ends of the second lead-out portion and the auxiliary component away from the first lead-out portion extend out of the mounting hole.

10. The magnetic latching relay according to claim 9, further comprising: A push card is arranged on the base, one end of which is connected to the movable spring portion, and the push card is located below the second lead-out portion and can move below the second lead-out portion.

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