Lead-out structure and magnetic latching relay

Abstract

The embodiment of the present application provides a leading-out structure and a magnetic latching relay. The leading-out structure comprises a leading-out piece and at least one auxiliary piece. The leading-out piece comprises a first leading-out part and a second leading-out part, one end of the second leading-out part is connected with one side of the first leading-out part; in the width direction of the leading-out piece, the width of the second leading-out part is smaller than the width of the first leading-out part; the first leading-out part is used for electrically connecting with a static spring part of the relay; the at least one auxiliary piece is fixedly connected on the second leading-out part; wherein the leading-out piece is formed by a stamping process, and the auxiliary piece is formed by the material remaining after the leading-out piece is formed by the stamping process. The leading-out structure of the present application can simplify the preparation process, reduce the impedance of the load circuit, increase the current-carrying area, reduce the temperature rise, save the material and reduce the cost.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and more particularly to a lead-out structure and a magnetic latching relay. Background Technology

[0002] A magnetic latching relay is an electronic switch that connects and disconnects a load circuit. It includes a lead-out structure for electrical connection to the load circuit.

[0003] In related technologies, the lead-out structure includes a connecting piece and a round copper rod, which are connected by welding. The connecting piece connects to the stationary spring in the relay, and the round copper rod connects to the external load circuit. However, due to the abrupt change in the material of the conductive cross-section at the connection point between the round copper rod and the connecting piece, their current densities are inconsistent, increasing the impedance of the load circuit. Furthermore, in related technologies, the lead-out structure typically connects to larger AC transformers, and due to size limitations, it is difficult to install smaller AC transformers. Moreover, the remaining material after forming the connecting piece during the manufacturing process is wasted, and the cost of the copper rod is also relatively high, increasing the overall product cost.

[0004] The information disclosed in the background section is only for enhancing the understanding of the background of the present invention, and therefore may include information that does not constitute related technology known to those skilled in the art. Summary of the Invention

[0005] Embodiments of the present invention provide a lead-out structure and a magnetic latching relay that can reduce the impedance of the load circuit and save costs.

[0006] This invention provides a lead-out structure, including a lead-out member and at least one auxiliary member. The lead-out member includes 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 member, 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 for electrical connection with the stationary spring portion of a relay; at least one auxiliary member is fixedly connected to the second lead-out portion; wherein the lead-out member is formed by a stamping process, and the auxiliary member is formed using the remaining material after the lead-out member has been formed by the stamping process.

[0007] In some embodiments of the present invention, the first lead-out portion is a plate-like structure, and the thickness of the first lead-out portion is the same as the thickness of the second lead-out portion in the thickness direction of the lead-out member.

[0008] In some embodiments of the present invention, in the thickness direction of the lead-out member, 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.

[0009] In some embodiments of the present invention, in the width direction of the lead-out member, one side of the first lead-out portion is flush with one side of the second lead-out portion.

[0010] In some embodiments of the present invention, 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.

[0011] In some embodiments of the present invention, the auxiliary component and the second lead-out portion are used to connect an AC transformer, wherein the total thickness of the auxiliary component and the second lead-out portion is less than or equal to the diameter of the mounting hole of the AC transformer; and the maximum width of the second lead-out portion and the auxiliary component is less than or equal to the diameter of the mounting hole of the AC transformer.

[0012] In some embodiments of the present invention, the number of auxiliary components is multiple, and the multiple auxiliary components are disposed on one side or opposite sides of the second lead-out portion.

[0013] In some embodiments of the present invention, the length of the auxiliary member is the same as the length of the second lead-out portion.

[0014] This invention also provides a magnetic latching relay, comprising: a base; a contact structure disposed on the base, the contact structure including a stationary spring portion and a moving spring portion; a lead-out structure as described in any of the above embodiments, wherein a first lead-out portion of the lead-out structure is connected to one end of the stationary spring portion, and a second lead-out portion of the lead-out structure extends out of the base from the side of the base; an AC transformer disposed outside the base, the AC transformer having a mounting hole, the second lead-out portion and an auxiliary component of the lead-out structure passing through the mounting hole, and the ends of the second lead-out portion and the auxiliary component away from the first lead-out portion extending out of the mounting hole.

[0015] In some embodiments of the present invention, the magnetic latching relay further includes: a push card disposed on the base, one end of the push card being connected to the moving spring portion, the push card being located below the second lead-out portion and capable of operating below the second lead-out portion.

[0016] As can be seen from the above technical solution, the present invention possesses at least one of the following advantages and positive effects:

[0017] In this embodiment of the invention, the lead-out parts are formed by a stamping process, thus the first and second lead-out parts can be formed in a single stamping process, simplifying the process and eliminating the need for a separate second lead-out part. Furthermore, the first and second lead-out parts are made of the same material, resulting in identical current densities and reducing the impedance of the load circuit. By fixing the auxiliary component to the second lead-out part, the current-carrying area is increased, thereby reducing temperature rise. Simultaneously, the second lead-out part can be made narrower, facilitating its insertion into smaller AC transformers. Additionally, the auxiliary component is formed using the remaining material after the lead-out parts are formed by the stamping process, saving material and reducing costs. Attached Figure Description

[0018] The above and other features and advantages of the present invention will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0019] Figure 1 This is an exploded schematic diagram of the lead-out structure shown in some embodiments of the present invention;

[0020] Figure 2 This is a top view schematic diagram illustrating the decomposition of the lead-out structure in some embodiments of the present invention;

[0021] Figure 3 This is a side view showing the decomposed lead-out structure according to some embodiments of the present invention;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the lead-out structure after assembly, as shown in some embodiments of the present invention;

[0023] Figure 5 This is a schematic diagram of the three-dimensional structure of the lead-out structure with two auxiliary components after assembly, as shown in some embodiments of the present invention.

[0024] Figure 6 This is a schematic diagram showing the connection between the lead-out structure and the AC transformer and the stationary spring section in some embodiments of the present invention;

[0025] Figure 7 This is a three-dimensional structural schematic diagram of a magnetic latching relay shown in some embodiments of the present invention;

[0026] Figure 8 This is a three-dimensional structural schematic diagram of a magnetic latching relay without an AC transformer, shown in some embodiments of the present invention;

[0027] Figure 9 This is a top view schematic diagram of a magnetic latching relay without an AC transformer, shown in some embodiments of the present invention;

[0028] Figure 10This is a schematic diagram of a magnetic latching relay with the base and AC transformer removed, as shown in some embodiments of the present invention;

[0029] Figure 11 The diagram shows the structure of the lead-out structure, the base, and the push card in some embodiments of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100. Lead-out structure; 10. Lead-out component; 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 component; 301. Fifth surface; 302. Sixth surface; 303. Riveting 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. Stationary spring part; 504. Stationary contact; 505. Compression spring; 600. Magnetic circuit structure; 601. Yoke; 602. Armature; 603. Permanent magnet; 604. Swing arm; 700. Push card; 800. Lead-out foot; X, Length direction; Y, Width direction; Z, Thickness direction. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that the invention will be thorough and complete, and the concept of the exemplary embodiments will be fully conveyed to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0033] To make the solution clearer, a simple description of the structure of a magnetic latching relay will be given first. (Reference) Figure 7 The diagram shows a three-dimensional structural schematic of a magnetic latching relay (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 disposed 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.

[0034] The magnetic circuit structure 600 includes a yoke 601, an armature 602, a permanent magnet 603, and a swing arm 604. Two yokes 601 are fixedly mounted on the base 300, located at opposite ends 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 armature 602 is connected to both ends of the permanent magnet 603. The permanent magnet 603 and the armature 602 are fixedly connected together by an injection-molded part formed by injection molding. The injection-molded part has rotating shafts on opposite sides; one shaft passes through a hole in the base 300, and the other shaft passes through a hole in the mounting bracket, allowing the injection-molded part to rotate. The injection-molded part also includes swing arms 604 located on either side of the permanent magnet 603.

[0035] like Figure 9 As shown, the contact structure 500 includes two parallel springs, each spring having a movable spring portion 501 and a stationary spring portion 503. The movable spring portion 501 has a movable contact 502, and the stationary spring portion 503 has a stationary contact 504. The movable contact of one spring corresponds to the stationary contact of the other spring, and vice versa. The contact structure 500 also includes a compression spring 505, which is connected to the movable spring portion 501.

[0036] The push card 700 is mounted on the base 300, with one end connected to the compression spring 505 and the other end movably connected to the swing arm 604 of the injection molded part. This allows the push card 700 to move when the swing arm 604 swings, which in turn drives the moving spring 501 to move via the compression spring 505.

[0037] One end of the lead-out structure 100 is connected to the stationary spring part 503, and the other end is connected to the load circuit.

[0038] When a positive pulse voltage is applied to coil 402, permanent magnet 603 swings to one side, simultaneously causing armature 602 to swing, thus engaging the armature 602 with the yokes 601 on both sides. Permanent magnet 603, armature 602, yokes 601, and the iron core form a complete magnetic field. Simultaneously, permanent magnet 603 drives swing arm 604 to swing, which in turn drives push card 700. Push card 700, through compression spring 505, pushes moving spring 501, causing the moving contact 502 of one spring to close with the stationary contact 504 of the other spring. This closes both springs, shuts down the relay, and allows current to flow through stationary spring 503 and lead-out structure 100, thus connecting the external load circuit. When coil 402 is de-energized, permanent magnet 603 maintains this magnetic field, thus maintaining the position of swing arm 604 and keeping moving and stationary contacts 502 and 504 closed.

[0039] When a reverse pulse voltage is applied to coil 402, permanent magnet 603 swings to the opposite side, simultaneously causing armature 602 to swing to the opposite side, ensuring that armature 602 remains in contact with the yokes 601 on both sides, forming another complete magnetic field. Simultaneously, the permanent magnet drives swing arm 604 to swing, which in turn drives push card 700 to move in the opposite direction. Push card 700 pulls moving spring 501, causing the moving contact 502 of one spring to disconnect from the stationary contact 504 of the other spring. With both springs disconnected, the relay is disconnected, the current flowing through lead-out structure 100 is interrupted, and the external load circuit is disconnected. When coil 402 is de-energized, permanent magnet 603 maintains the magnetic field, thus maintaining the position of swing arm 604 and keeping moving contact 502 and stationary contact 504 disconnected.

[0040] The lead-out structure 100 of this embodiment of the invention will be described in detail below. Figures 1 to 4 As shown, the lead-out structure 100 includes a lead-out member 10 and at least one auxiliary member 3.

[0041] In some embodiments, the lead-out member 10 includes a first lead-out portion 1 and a second lead-out portion 2, one end of the second lead-out portion 2 being connected to one side of the first lead-out portion 1; in the width direction Y of the lead-out member 10, the width of the second lead-out portion 2 is smaller than the width of the first lead-out portion 1; the first lead-out portion 1 is used for electrical connection with the stationary spring portion 503 of the magnetic latching relay. At least one auxiliary member 3 is fixedly connected to the second lead-out portion 2. The lead-out member 10 is formed by a stamping process, and the auxiliary member 3 is formed from the remaining material after the lead-out member 10 is formed by the stamping process.

[0042] Stamping is a metal processing method that is based on the plastic deformation of metal. It uses dies and stamping equipment to apply pressure to sheet metal, causing the sheet metal to undergo plastic deformation or separation, thereby obtaining parts (stamped parts) with certain shapes, dimensions and properties.

[0043] like Figure 1 As shown, after the lead-out part 10 is formed by stamping, some material is removed. This material can be called the remaining material. The remaining material is stamped again to form the auxiliary part 3 mentioned above.

[0044] In some embodiments, the auxiliary component 3 can be fixedly connected to the second lead-out portion 2 by riveting, threaded connection, or welding. For example... Figure 1 As shown, when the auxiliary part 3 is riveted to the second lead-out part 2, a protrusion 203 can be provided on the second lead-out part 2, and a riveting hole 303 can be provided on the auxiliary part 3.

[0045] In some embodiments, the first lead-out portion 1 is a plate-like structure, and the thickness of the first lead-out portion 1 is the same as the thickness of the second lead-out portion 2 in the thickness direction Z of the lead-out member 10.

[0046] like Figure 1 As shown, when the lead-out part 10 is formed by stamping from a single plate structure, the first lead-out part 1 and the second lead-out part 2 have the same thickness. Of course, the thicknesses of the first lead-out part 1 and the second lead-out part 2 can also be different; for example, the second lead-out part 2 may be thinner or thicker than the first lead-out part 1. The final total thickness of the second lead-out part 2 and the auxiliary part 3 can be further adjusted using the auxiliary part 3, allowing them to be inserted into the AC transformer 200.

[0047] In some embodiments, such as Figure 1 and Figure 3 As shown, in the thickness direction Z of the lead-out member 10, the first lead-out part 1 has a first surface 101 and a second surface 102 opposite to the first surface 101, and the second lead-out part 2 has a third surface 201 and a fourth surface 202 opposite to the third surface 201, wherein the first surface 101 and the third surface 201 are flush, and the second surface 102 and the fourth surface 202 are flush.

[0048] like Figure 1 and Figure 3 As shown, the first surface 101 of the first lead-out portion 1 is flush with the second surface 102 of the second lead-out portion 2, and the second surface 102 of the first lead-out portion 1 is flush with the fourth surface 202 of the second lead-out portion 2. That is to say, there is no included angle between the first lead-out portion 1 and the second lead-out portion 2, or the included angle is 180°, which simplifies the manufacturing process.

[0049] In some embodiments, the first surface 101 of the first lead-out portion 1 may not be flush with the third surface 201 of the second lead-out portion 2. That is, the third surface 201 of the second lead-out portion 2 may be concave or convex relative to the first surface 101 of the second lead-out portion 2, or there may be an angle between the first lead-out portion 1 and the second lead-out portion 2, for example, the second lead-out portion 2 may be raised relative to the first lead-out portion 1. Those skilled in the art can set it according to the actual situation, for example, according to the connection of the load circuit, the space occupied by the relay, etc., and no special limitation is made here.

[0050] In some embodiments, in the width direction Y of the lead-out member 10, one side of the first lead-out portion 1 is flush with one side of the second lead-out portion 2.

[0051] like Figure 2 As shown, the width of the second lead-out portion 2 is smaller than the width of the first lead-out portion 1. The second lead-out portion 2 is located on one side of the first lead-out portion 1, that is, one side of the first lead-out portion 1 is flush with one side of the second lead-out portion 2, so that in the width direction Y, the first lead-out portion 1 protrudes relative to the second lead-out portion 2. Since the first lead-out portion 1 is used to connect with the stationary spring portion 503, as... Figure 7 and Figure 8As shown, the first lead-out part 1 needs to be placed in the base 300 of the magnetic latching relay, and the second lead-out part 2 extends from one side of the base 300. Therefore, the side of the first lead-out part 1 is flush with the side of the second lead-out part 2, which is conducive to the relay cover covering the base 300, and at the same time facilitates the processing of the lead-out part 10.

[0052] In some embodiments, the side surface of the first lead-out portion 1 and the side surface of the second lead-out portion 2 may not be flush. For example, the side surface of the second lead-out portion 2 may be recessed or protruding compared to the side surface of the first lead-out portion 1, as long as the first lead-out portion 1 can be connected to the stationary spring portion 503 and the second lead-out portion 2 can extend out of the base 300 without interfering with the installation of the relay. Of course, if the second lead-out portion 2 and the auxiliary member 3 can pass through the AC transformer 200, the wider the second lead-out portion 2 and the auxiliary member 3, the better, so as to increase the current-carrying area and reduce the temperature rise.

[0053] In some embodiments, such as Figure 3 As shown, the auxiliary component 3 is a plate-shaped structure, and the auxiliary component 3 is laid 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 component 3 is less than or equal to the width of the second lead-out part 2.

[0054] like Figure 3 As shown, the auxiliary component 3 has a plate-like structure and has a fifth surface 301 and a sixth surface 302 opposite to the fifth surface 301. The fact that the auxiliary component 3 is laid flat on the third surface 201 of the second lead-out portion 2 can be understood as follows: after the auxiliary component 3 is installed on the second lead-out portion 2, the sixth surface 302 of the auxiliary component 3 is attached to the third surface 201 of the second lead-out portion 2.

[0055] In some embodiments, the width of the auxiliary member 3 is equal to the width of the second lead-out portion 2 in the width direction Y of the lead-out portion 10. In this case, the width of the first lead-out portion 1 can be precisely inserted into the mounting hole of the AC transformer 200, that is, the widths of the first lead-out portion 1 and the auxiliary member 3 are set to the maximum, which can increase the current-carrying area and reduce the temperature rise.

[0056] In other embodiments, the width of the auxiliary component 3 may be greater than or less than the width of the second lead-out portion 2. Regardless of the width of the auxiliary component 3 and the second lead-out portion 2, the auxiliary component 3, after being installed on the second lead-out portion 2, can be inserted into the AC transformer 200.

[0057] In some embodiments, such as Figure 6 and Figure 7As shown, auxiliary component 3 and second lead-out portion 2 are used to connect an AC transformer 200. The total thickness of auxiliary component 3 and second lead-out portion 2 is less than or equal to the diameter of the mounting hole of AC transformer 200; the maximum width of second lead-out portion 2 and auxiliary component 3 is less than or equal to the diameter of the mounting hole of AC transformer 200. The AC transformer 200 serves the function of current measurement.

[0058] like Figure 6 As shown, the AC transformer 200 has a mounting hole at its center, through which the auxiliary component 3 and the second lead-out portion 2 can pass, allowing the AC transformer 200 to be mounted on the second lead-out portion 2 and the auxiliary component 3. Therefore, the total thickness of the auxiliary component 3 and the second lead-out portion 2 must be less than or equal to the diameter of the mounting hole, and the maximum width of the second lead-out portion 2 and the auxiliary component 3 must be less than or equal to the diameter of the mounting hole.

[0059] 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, fitting against the third surface 201 of the second lead-out portion 2. The two sides and the fifth surface 301 of the auxiliary component 3 can be arc-shaped to accommodate the circular hole and maximize the thickness of the auxiliary component 3, thereby increasing the current-carrying area. When the mounting hole is rectangular, the auxiliary component 3 can be a rectangular plate structure.

[0060] In some embodiments, the number of auxiliary components 3 is multiple, and the multiple auxiliary components 3 are disposed on one side or opposite sides of the second lead-out portion 2.

[0061] like Figure 5 As shown, the number of auxiliary components 3 can be two, three, four, five, six, or more. Multiple auxiliary components 3 can be disposed on one side of the second lead-out portion 2, for example, multiple auxiliary components 3 can all be disposed on the third surface 201 of the second lead-out portion 2. Alternatively, multiple auxiliary components 3 can be disposed on opposite sides of the second lead-out portion 2, that is, multiple auxiliary components 3 can be disposed on the third surface 201 and the fourth surface 202 of the second lead-out portion 2. The thickness and width of each auxiliary component 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 components 3 in the direction away from the second lead-out portion 2 can gradually decrease, so that more auxiliary components 3 can be provided while still being able to pass through the mounting hole, further increasing the current-carrying area and reducing temperature rise. Of course, the thickness and width of multiple auxiliary components 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.

[0062] In some embodiments, the length of the auxiliary member 3 is the same as the length of the second lead-out portion 2 in the longitudinal direction X of the lead-out member 10. This maximizes the length of the auxiliary member 3, increasing the current-carrying area and reducing temperature rise. Figure 8As shown, when the lead-out structure 100 is applied to a relay, a portion of the second lead-out part 2 and the auxiliary component 3 are located outside the base 300. The ends of the second lead-out part 2 and the auxiliary component 3 that are away from the first lead-out part 1 are connected to the lead-out pin 800, which is used to connect to an external load circuit. In this embodiment of the invention, the end face of the auxiliary component 3 that is away from the first lead-out part 1 is flush with the end face of the second lead-out part 2 that is away from the first lead-out part 1, so that the load current can flow smoothly through the lead-out pin 800.

[0063] In summary, in this embodiment of the invention, the lead-out member 10 is formed by a stamping process, thus the first lead-out portion 1 and the second lead-out portion 2 can be formed in a single stamping process, simplifying the process and eliminating the need for a separate second lead-out portion 2, for example, eliminating the need for a round copper rod. Furthermore, the first lead-out portion 1 and the second lead-out portion 2 are made of the same material, resulting in the same current density for both and reducing the impedance of the load circuit. By fixing the auxiliary member 3 to the second lead-out portion 2, the current-carrying area is increased, thereby reducing the temperature rise. Simultaneously, the second lead-out portion 2 can be made narrower, facilitating its insertion into a smaller AC transformer 200. In addition, the auxiliary member 3 is formed using the remaining material after the lead-out member 10 is formed by the stamping process, saving material and reducing costs.

[0064] This invention also provides a magnetic latching relay, such as... Figure 7 and Figure 8 As shown, the magnetic latching relay includes a base 300, a contact structure 500, a lead-out structure 100, and an AC transformer 200. The contact structure 500 is mounted on the base 300 and includes two parallel springs, each spring having a stationary spring portion 503 and a moving spring portion 501. The lead-out structure 100 is the lead-out structure described in any of the above embodiments. The first lead-out portion 1 of the lead-out structure 100 is connected to one end of the stationary spring portion 503 of one of the two parallel springs, and the second lead-out portion 2 of the lead-out structure 100 extends out of the base 300 from its side. The AC transformer 200 is located outside the base 300. The AC transformer 200 has a mounting hole, through which the second lead-out portion 2 and an auxiliary member 3 pass, with the ends of the second lead-out portion 2 and the auxiliary member 3 extending away from the first lead-out portion 1 extending out of the mounting hole.

[0065] The relay structure in this embodiment of the invention is the same as the relay structure described in the above embodiments. For example, the relay also includes the magnetic circuit structure 600, the push card 700, and the coil 402 structure in the above embodiments, etc., which will not be described in detail here.

[0066] like Figures 8 to 10As shown, the magnetic latching relay of this embodiment of the invention also includes a push card 700, which is disposed on the base 300. One end of the push card 700 is connected to the moving spring portion 501. The push card 700 is located below the second lead-out portion 2 of the lead-out structure 100 and can operate below the second lead-out portion 2.

[0067] like Figure 8 As shown, the contact structure 500 of this 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, thereby connecting it to the movable spring portion 501. The other part of the push card 700 is 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 through the compression spring 505, causing the moving contact 502 on the movable spring portion 501 of one spring to close with the stationary contact 504 on the stationary spring portion 503 of the other spring, thus closing the relay. The load current flows through the stationary spring portion 503 and the lead-out structure 100, thereby turning on the external load circuit.

[0068] To more clearly illustrate the connection between the lead-out structure 100 and the stationary spring portion 503 Figure 10 The diagram shows the structure of the magnetic latching relay after removing the base 300. Figure 11 This is a schematic diagram showing only the base 300, the push card 700, and the lead-out structure 100. (See diagram below.) Figure 10 and Figure 11 As shown, a portion of the second lead-out part 2 of the lead-out member 10 is disposed in the base 300, and the push card 700 is located below this portion of the second lead-out part 2 and does not contact the second lead-out part 2. The push card 700 can move with the swing arm 604. Therefore, the second lead-out part 2 plays a role in giving way to the push card 700, ensuring that the push card 700 can move smoothly.

[0069] In some embodiments, such as Figure 9 and Figure 10 As shown, the magnetic latching relay includes two contact structures 500 and two lead-out structures 100, each lead-out structure 100 being connected to a stationary spring portion 503 in each contact structure 500. One end of the push card 700 is connected to a movable spring portion 501 of one of the contact structures 500 (e.g., via a compression spring 505), and the other end is connected to a movable spring portion 501 of the other 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.

[0070] In some embodiments, such as Figures 8 to 10As shown, the magnetic latching relay may also include a lead 800. The lead 800 is connected to the end of the second lead 2 and the auxiliary component 3. The lead 800 is used to connect to an external load circuit; for example, the lead 800 can be plugged into the load's connector to achieve an electrical connection.

[0071] In summary, in the magnetic latching relay of this embodiment, the first lead 1, the second lead 2, and the auxiliary component 3 of the lead-out structure 100 are made of the same material, resulting in the same current density and reducing the impedance of the load circuit. By fixing the auxiliary component 3 to the second lead 2, the current-carrying area is increased, and the temperature rise is reduced. Simultaneously, the second lead 2 can be made narrower, allowing the magnetic latching relay to be configured with a smaller AC transformer 200. The lead-out structure 100 is formed using a stamping process, saving material and reducing costs.

[0072] It is understood that the various embodiments / implementations provided by the present invention can be combined with each other without causing contradictions, and will not be described one by one here.

[0073] In this embodiment of the invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention based on the specific circumstances.

[0074] In the description of the embodiments of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0075] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0076] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. For those skilled in the art, the embodiments of the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of the present invention should be included within the protection scope of the embodiments of the present invention.

Claims

1. A lead-out structure, characterized in that, include: The lead-out component includes 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 member, 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 for electrical connection with the stationary spring portion of the relay; At least one auxiliary component is fixedly connected to the second lead-out portion; The lead-out part is formed by a stamping process, and the auxiliary part is formed using the remaining material after the lead-out part is formed by the stamping process. The auxiliary component and the second lead-out portion are used to connect an AC transformer. The total thickness of the auxiliary component 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 component is less than or equal to the diameter of the mounting hole of the AC transformer. The second lead-out portion and the auxiliary component are inserted into the AC transformer.

2. The lead-out structure according to claim 1, characterized in that, The first lead-out portion is a plate-shaped structure, and in the 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.

3. The lead-out structure according to claim 2, characterized in that, In the thickness direction of the lead-out member, 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, characterized in that, In the width direction of the lead-out member, one side of the first lead-out portion is flush with one side of the second lead-out portion.

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

6. The lead-out structure according to claim 1, characterized in that, The number of auxiliary components is multiple, and the multiple auxiliary components are disposed on one side or opposite sides of the second lead-out portion.

7. The lead-out structure according to claim 1, characterized in that, The length of the auxiliary component is the same as the length of the second lead-out portion.

8. A magnetic latching relay, characterized in that, include: Base; A contact structure is provided on the base, the contact structure comprising two parallel springs, each spring having a stationary spring portion and a movable spring portion; According to any one of claims 1 to 7, the first lead-out portion of the lead-out structure is connected to one end of the stationary spring portion of one of the two parallel reeds, 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 is disposed outside the base. The AC transformer has a mounting hole. The second lead-out portion and the auxiliary component of the lead-out structure pass through 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.

9. The magnetic latching relay according to claim 8, characterized in that, Also includes: A push card is provided on the base, one end of the push card is connected to the moving spring, and the push card is located below the second lead-out part, and can move below the second lead-out part.

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