CN221596301U - Extraction structure and magnetic latching relay - Google Patents

Abstract

The utility model provides a lead-out structure and a magnetic latching relay. The lead-out structure comprises a lead-out member and at least one auxiliary member. The leading-out piece comprises a first leading-out part and a second leading-out part, and one end of the second leading-out part is connected with one side of the first leading-out part; the width of the second extraction part is smaller than that of the first extraction part in the width direction of the extraction piece; the first lead-out part is used for being electrically connected with the static spring part of the relay; at least one auxiliary piece is fixedly connected to the second leading-out part; the auxiliary piece is formed by utilizing the material remained after the lead piece is formed by the stamping process. The extraction structure of the utility model can simplify the preparation process, reduce the impedance of a load circuit, increase the current carrying area, reduce the temperature rise, save materials and reduce the cost.

Description

Extraction structure and magnetic latching relay

Technical Field

The utility model relates to the technical field of relays, in particular to a lead-out structure and a magnetic latching relay.

Background

The magnetic latching relay is an automatic switch, and plays roles in switching on and switching off a circuit. The magnetic latching relay includes a lead-out structure for electrical connection with a load circuit.

In the related art, the lead-out structure comprises a connecting sheet and a round copper rod, and the round copper rod is connected with the connecting sheet in a welding mode. The connecting piece is used for being connected with the quiet spring portion in the relay, and round bar copper is used for being connected with external load circuit. However, as the round copper rod and the connecting sheet are arranged at the joint, the materials of the conductive sections are suddenly changed, so that the current densities of the round copper rod and the connecting sheet are inconsistent, and the impedance of the load circuit is increased. In the related art, the lead-out structure is generally connected with an alternating current transformer with a larger specification, is limited by the size, and is difficult to install the alternating current transformer with a smaller specification. In addition, after the connecting sheet is formed in the preparation process, the residual materials are wasted, the cost of the copper bar is high, and the cost of the product is increased.

The above information disclosed in the background section is only for enhancement of understanding of the background of the utility model and therefore it may contain information that does not form the related art that is already known to those of ordinary skill in the art.

Disclosure of utility model

The embodiment of the utility model provides a lead-out structure and a magnetic latching relay, which can reduce the impedance of a load circuit and save the cost.

The embodiment of the utility model provides a lead-out structure, which comprises a lead-out piece and at least one auxiliary piece. The extraction piece comprises a first extraction part and a second extraction part, and one end of the second extraction part is connected with one side of the first extraction part; the width of the second extraction part is smaller than that of the first extraction part in the width direction of the extraction piece; the first lead-out part is used for being electrically connected with the static spring part of the relay; at least one auxiliary piece is fixedly connected to the second leading-out part; wherein the lead-out member is formed by a punching process, and the auxiliary member is formed by using a material remaining after the lead-out member is formed by the punching process.

In some embodiments of the utility model, the first lead-out portion has a plate-like structure, and a thickness of the first lead-out portion is the same as a thickness of the second lead-out portion in a thickness direction of the lead-out member.

In some embodiments of the utility model, the first lead-out has a first surface and a second surface opposite the first surface in a thickness direction of the lead-out, and the second lead-out has a third surface and a fourth surface opposite the third surface, wherein the first surface is flush with the third surface and the second surface is flush with the fourth surface.

In some embodiments of the utility model, a side surface of the first lead-out portion is flush with a side surface of the second lead-out portion in the width direction of the lead-out member.

In some embodiments of the present utility model, the auxiliary member is a plate-like structure, and the auxiliary member is tiled 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 smaller than or equal to the width of the second lead-out portion.

In some embodiments of the present utility model, the auxiliary piece and the second lead-out portion are used for connecting an ac transformer, and the total thickness of the auxiliary piece and the second lead-out portion is less than or equal to the diameter of the mounting hole of the ac transformer; the maximum widths of the second leading-out part and the auxiliary piece are smaller than or equal to the diameter of the mounting hole of the alternating current transformer.

In some embodiments of the utility model, the number of the auxiliary members is plural, and plural auxiliary members are provided on one side or opposite sides of the second drawing portion.

In some embodiments of the utility model, the length of the auxiliary element is the same as the length of the second lead-out portion.

The embodiment of the utility model also provides a magnetic latching relay, which comprises: a base; the contact structure is arranged on the base and comprises a static spring part and a movable spring part; the extraction structure of any one of the above embodiments, wherein a first extraction portion of the extraction structure is connected to one end of the static spring portion, and a second extraction portion of the extraction structure extends out of the base from a side surface of the base; the alternating current transformer is arranged outside the base and is provided with a mounting hole, the second leading-out part and the auxiliary piece of the leading-out structure penetrate through the mounting hole, and the second leading-out part and the end part, far away from the first leading-out part, of the auxiliary piece extend out of the mounting hole.

In some embodiments of the utility model, the magnetic latching relay further comprises: the pushing card is arranged on the base, one end of the pushing card is connected with the movable spring part, and the pushing card is positioned below the second leading-out part and can move below the second leading-out part.

According to the technical scheme, the utility model has at least one of the following advantages and positive effects:

In the embodiment of the utility model, the leading-out piece is formed through a stamping process, so that the first leading-out part and the second leading-out part can be formed through one stamping process, the process is simplified, and the second leading-out part is not required to be arranged independently. And the materials of the first extraction part and the second extraction part are the same, so that the current densities of the first extraction part and the second extraction part are the same, and the impedance of the load circuit is reduced. Through with auxiliary part fixed connection on the second portion of drawing forth, increased the current-carrying area, and then reduced the temperature rise, the second draws forth the narrower that the portion can set up simultaneously to in the AC transformer of less specification is worn to locate in the benefit of. In addition, the auxiliary piece is formed by using the material remained after the drawing piece is formed by the stamping process, so that the material is saved, and the cost is reduced.

Drawings

The above and other features and advantages of the present utility model will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

FIG. 1 is an exploded schematic view of an extraction structure according to some embodiments of the present utility model;

FIG. 2 is an exploded top view of an extraction structure according to some embodiments of the present utility model;

FIG. 3 is a schematic side view of an exploded view of an extraction structure according to some embodiments of the present utility model;

FIG. 4 is a schematic perspective view of an assembled extraction structure according to some embodiments of the present utility model;

FIG. 5 is a schematic perspective view of an assembled extraction structure with two auxiliary elements according to some embodiments of the present utility model;

FIG. 6 is a schematic diagram of connection of an extraction structure with an AC transformer and a static spring according to some embodiments of the present utility model;

FIG. 7 is a schematic perspective view of a magnetic latching relay in accordance with some embodiments of the present utility model;

FIG. 8 is a schematic perspective view of a magnetically held relay with an AC transformer removed, shown in some embodiments of the utility model;

FIG. 9 is a schematic top view of a magnetically held relay with an AC transformer removed, shown in some embodiments of the utility model;

FIG. 10 is a schematic diagram of a magnetically held relay with the base removed and an AC transformer shown in some embodiments of the utility model;

fig. 11 is a schematic view of a structure of an extraction structure, a base, and a push card according to some embodiments of the present utility model.

Reference numerals illustrate:

100. A lead-out structure; 10. a lead-out member; 1. a first lead-out portion; 101. a first surface; 102. a second surface; 2. a second lead-out portion; 201. a third surface; 202. a fourth surface; 203. a protrusion; 3. an auxiliary member; 301. a fifth surface; 302. a sixth surface; 303. riveting holes; 200. an alternating current transformer; 300. a base; 400. a coil assembly; 401. a coil former; 402. a coil; 500. a contact structure; 501. a moving spring part; 502. a movable contact; 503. a static spring part; 504. a stationary contact; 505. a pressure spring; 600. a magnetic circuit structure; 601. a yoke; 602. an armature; 603. a permanent magnet; 604. swing arms; 700. pushing the card; 800. a pin; x, length direction; y, width direction; z, thickness direction.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied 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 concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

In order to make the scheme clearer, a simple description is first made of the structure of the magnetic latching relay. Referring to fig. 7, a schematic perspective view of a magnetic latching relay (not including a housing) is shown. 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 a core (not shown), a bobbin 401, and a coil 402, among others. The coil 402 is wound around the outer surface of the bobbin 401, and the core is disposed in the bobbin 401.

The magnetic circuit structure 600 includes a yoke 601, an armature 602, a permanent magnet 603, and a swing arm 604. The yokes 601 are fixedly disposed on the base 300, and the number of yokes 601 is two, and the yokes are respectively disposed at two ends of the coil bobbin 401 and contact with the iron core. Permanent magnet 603 is located on one side of coil assembly 400. The permanent magnet 603 has armatures 602 connected to both ends thereof, and the permanent magnet 603 and the armatures 602 are fixedly connected together by injection-molded pieces formed by an injection molding process. The opposite sides of the injection molding piece are provided with rotating shafts, one rotating shaft penetrates through one shaft hole in the base 300, the other rotating shaft penetrates through the shaft hole in the fixing frame, so that the injection molding piece can rotate, and the injection molding piece further comprises swing arms 604 positioned on two sides of the permanent magnet 603.

As shown in fig. 9, the contact structure 500 includes two parallel spring pieces, each spring piece having a movable spring portion 501 and a stationary spring portion 503, the movable spring portion 501 being provided with a movable contact 502, the stationary spring portion 503 being provided with a stationary contact 504. The movable contact of one reed corresponds to the fixed contact of the other reed, and the fixed contact of one reed corresponds to the movable contact of the other reed. The contact structure 500 further includes a compression spring 505, and the compression spring 505 is connected to the movable spring part 501.

The push card 700 is disposed on the base 300, one end of the push card is connected with the compression spring 505, and the other end of the push card can be movably connected with the swing arm 604 of the injection molding piece. So that when the swing arm 604 swings, the push card 700 can be driven to move, and then the movable spring part 501 is driven to move by the pressure spring 505.

One end of the lead structure 100 is connected to the stationary spring portion 503, and the other end is connected to a load circuit.

When the coil 402 is supplied with a forward pulse voltage, the permanent magnet 603 swings to one side, and drives the armature 602 to swing, so that the armature 602 is overlapped with the yokes 601 on the two sides. The permanent magnet 603, the armature 602, the yoke 601 and the core form a complete magnetic field. Meanwhile, the permanent magnet 603 drives the swing arm 604 to swing, the swing arm 604 drives the pushing card 700 to move, the pushing card 700 pushes the movable spring part 501 through the pressure spring 505, so that the movable contact 502 of one reed is closed with the fixed contact 504 of the other reed, namely, the two reeds are closed, the relay is closed, current flows through the extraction structure 100 through the fixed spring part 503, and an external load circuit is conducted. When the coil 402 is de-energized, the permanent magnet 603 is able to maintain the magnetic field, i.e., the position of the swing arm 604, and thus the movable contact 502 and the stationary contact 504, closed.

When the coil 402 is energized with a reverse pulse voltage, the permanent magnet 603 swings to the opposite side, and drives the armature 602 to swing to the other side, so that the armature 602 can still overlap with yokes 601 on both sides, and another complete magnetic field is formed. Meanwhile, the permanent magnet drives the swing arm 604 to swing, the swing arm 604 drives the push card 700 to move in the opposite direction, the push card 700 pulls the movable spring part 501, so that the movable contact 502 of one reed is disconnected from the fixed contact 504 of the other reed, the two reeds are disconnected, the relay is disconnected, the current flowing through the extraction structure 100 is disconnected, and the external load circuit is disconnected. When the coil 402 is de-energized, the permanent magnet 603 is able to maintain the magnetic field, i.e., the position of the swing arm 604, and thus the moving contact 502 and the stationary contact 504, open.

The extraction structure 100 according to the embodiment of the present utility model will be described in detail. As shown in fig. 1 to 4, the lead-out structure 100 includes a lead-out member 10 and at least one auxiliary member 3.

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; the width of the second lead-out portion 2 is smaller than the width of the first lead-out portion 1 in the width direction Y of the lead-out member 10; the first lead-out portion 1 is electrically connected to a static spring portion 503 of the magnetic latching relay. At least one auxiliary member 3 is fixedly connected to the second lead-out portion 2. Wherein the lead-out member 10 is formed by a pressing process, and the auxiliary member 3 is formed of a material remaining after the lead-out member 10 is formed by the pressing process.

The stamping process is a metal processing method, and is based on plastic deformation of metal, and the metal is subjected to pressure by using a die and stamping equipment to make the metal generate plastic deformation or separation, so that a part (stamping part) with certain shape, size and performance is obtained.

After the lead-out member 10 is formed by punching using a punching process, as shown in fig. 1, a part of the material, which may be referred to as a surplus material, is removed, and the surplus material is continued to be punched, whereby the auxiliary member 3 described above may be formed.

In some embodiments, the auxiliary element 3 may be fixedly connected to the second lead-out 2 by means of riveting, screwing or welding. As shown in fig. 1, when the auxiliary 3 is caulking with the second lead-out portion 2, a protrusion 203 may be provided on the second lead-out portion 2, and a caulking hole 303 may be provided on the auxiliary 3.

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.

As shown in fig. 1, when the lead-out member 10 is formed by punching a plate-like structure, the first lead-out portion 1 and the second lead-out portion 2 have the same thickness. Of course, the thicknesses of the first lead-out portion 1 and the second lead-out portion 2 may also be different, for example, the second lead-out portion 2 may be thinner or thicker than the first lead-out portion 1. The total thickness of the final second lead-out portion 2 and the auxiliary member 3 can be further adjusted by the auxiliary member 3 so that both can be penetrated through the ac transformer 200.

In some embodiments, as shown in fig. 1 and 3, in the thickness direction Z of the lead-out 10, the first lead-out 1 has a first surface 101 and a second surface 102 opposite to the first surface 101, and the second lead-out 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.

As shown in fig. 1 and 3, 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, the first lead-out portion 1 and the second lead-out portion 2 have no included angle or an included angle of 180 °, so that the manufacturing process can be simplified.

In some embodiments, the first surface 101 of the first lead-out portion 1 may also be not flush with the third surface 201 of the second lead-out portion 2, i.e. the third surface 201 of the second lead-out portion 2 may be concave or convex compared to the first surface 101 of the second lead-out portion 2, or an angle may be formed between the first lead-out portion 1 and the second lead-out portion 2, e.g. the second lead-out portion 2 is tilted compared to the first lead-out portion 1. Those skilled in the art may set the setting according to the actual situation, for example, the connection of the load circuit, the space occupied by the relay, etc., and the present invention is not limited thereto.

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

As shown in fig. 2, the width of the second lead-out portion 2 is smaller than the width of the first lead-out portion 1, and the second lead-out portion 2 is located at one side of the first lead-out portion 1, i.e., one side surface of the first lead-out portion 1 is flush with one side surface of the second lead-out portion 2, so that the first lead-out portion 1 protrudes in the width direction Y as compared with the second lead-out portion 2. Since the first lead-out portion 1 is used for connecting with the static spring portion 503, as shown in fig. 7 and 8, the first lead-out portion 1 needs to be placed in the base 300 of the magnetic latching relay, and the second lead-out portion 2 extends out from one side of the base 300, so that the side surface of the first lead-out portion 1 is flush with the side surface of the second lead-out portion 2, which is beneficial for covering the base 300 with the cover body of the relay, and meanwhile, is convenient for processing the lead-out member 10.

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 is 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 with the static 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, in the case where the second lead-out portion 2 and the auxiliary 3 can pass through the ac transformer 200, the larger the widths of the second lead-out portion 2 and the auxiliary 3 are, the larger the current carrying area is, and the temperature rise is reduced.

In some embodiments, as shown in fig. 3, the auxiliary member 3 is in a plate-shaped structure, and the auxiliary member 3 is tiled on the third surface 201 of the second lead-out portion 2; the width of the auxiliary member 3 is smaller than or equal to the width of the second lead-out portion 2 in the width direction Y of the lead-out member 10.

As shown in fig. 3, the auxiliary member 3 has a plate-like structure, and the auxiliary member 3 has a fifth surface 301 and a sixth surface 302 facing away from the fifth surface 301. The auxiliary member 3 is laid flat on the third surface 201 of the second lead-out portion 2, and it is understood that the sixth surface 302 of the auxiliary member 3 is attached to the third surface 201 of the second lead-out portion 2 after the auxiliary member 3 is mounted on the second lead-out portion 2.

In some embodiments, the width of the auxiliary element 3 is equal to the width of the second lead-out 2 in the width direction Y of the lead-out 10. At this time, the width of the first lead-out portion 1 can be just penetrating through 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 be maximum, so that the current carrying area can be increased, and the temperature rise can be reduced.

In other embodiments, the width of the auxiliary element 3 may also be greater or less than the width of the second lead-out 2. The auxiliary member 3 can be inserted into the ac transformer 200 after being attached to the second lead-out portion 2 regardless of the widths of the auxiliary member 3 and the second lead-out portion 2.

In some embodiments, as shown in fig. 6 and 7, the auxiliary member 3 and the second lead-out portion 2 are used for connecting an ac transformer 200, and the total thickness of the auxiliary member 3 and the second lead-out 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-out portion 2 and the auxiliary member 3 is smaller than or equal to the diameter of the mounting hole of the ac transformer 200. The ac transformer 200 serves for current metering, among other things.

As shown in fig. 6, the ac transformer 200 has a mounting hole at the center thereof, through which the auxiliary member 3 and the second lead-out portion 2 can pass, so that the ac transformer 200 is provided on the second lead-out portion 2 and the auxiliary member 3. Therefore, the total thickness of the auxiliary member 3 and the second lead-out portion 2 needs to be smaller than or equal to the diameter size of the mounting hole, and the maximum width of the second lead-out portion 2 and the auxiliary member 3 needs to be smaller than or equal to the diameter size of the mounting hole.

The shape of the mounting hole may be circular or rectangular. When the shape of the mounting hole is circular, the sixth surface 302 of the auxiliary member 3 may be a plane, and attached to the third surface 201 of the second lead-out portion 2, and the two side surfaces and the fifth surface 301 of the auxiliary member 3 may be arc surfaces, so as to adapt to the circular hole, and the thickness of the auxiliary member 3 can be increased to the greatest extent, and the current carrying area can be increased. When the shape of the mounting hole is rectangular, the auxiliary member 3 may be a rectangular plate-like structure.

In some embodiments, the number of auxiliary members 3 is plural, and the plurality of auxiliary members 3 are provided on one side or opposite sides of the second lead-out portion 2.

As shown in fig. 5, the number of the auxiliary members 3 may be two, three, four, five, six or more. The plurality of auxiliary members 3 may be provided on one side of the second lead-out portion 2, for example, the plurality of auxiliary members 3 are provided on the third surface 201 of the second lead-out portion 2. Or a plurality of auxiliary members 3 are provided on opposite sides of the second lead-out portion 2, i.e., a plurality of auxiliary members 3 are provided on the third surface 201 and the fourth surface 202 of the second lead-out portion 2. The thickness and width of each auxiliary member 3 may be different, for example, when the mounting hole of the ac transformer 200 is a circular hole, the thickness and width of the auxiliary member 3 in a direction away from the second lead-out portion 2 among the plurality of auxiliary members 3 may be gradually reduced to provide more auxiliary members 3 in a case where it is possible to pass through the mounting hole, further increase the current carrying area, and reduce the temperature rise. Of course, the thickness and width of the plurality of auxiliary members 3 may be the same, and those skilled in the art may set the thickness and width according to the actual situation, and are not particularly limited herein.

In some embodiments, the length of the auxiliary element 3 is the same as the length of the second lead-out 2 in the length direction X of the lead-out 10. 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 fig. 8, when the lead structure 100 is applied to a relay, a portion of the second lead portion 2 and the auxiliary member 3 are located outside the base 300, and one ends of the second lead portion 2 and the auxiliary member 3, which are far from the first lead portion 1, are connected to the lead pin 800, and the lead pin 800 is used for connection with an external load circuit. In the embodiment of the utility model, the end surface of the auxiliary member 3 far from the first lead-out portion 1 is flush with the end surface of the second lead-out portion 2 far from the first lead-out portion 1, so that the load current can smoothly flow through the lead-out pin 800.

In summary, in the embodiment of the present utility model, the drawing member 10 is formed by a stamping process, so that the first drawing portion 1 and the second drawing portion 2 can be formed by a stamping process, which simplifies the process, and does not need to separately provide the second drawing portion 2, for example, does not need to provide a round copper bar. And the materials of the first extraction part 1 and the second extraction part 2 are the same, so that the current densities of the first extraction part 1 and the second extraction part are the same, and the impedance of the load circuit is reduced. Through with auxiliary part 3 fixed connection on second portion 2 that draws forth, increased the current-carrying area, and then reduced the temperature rise, second portion 2 that draws forth simultaneously can set up narrower to in the alternating current transformer 200 of less specification is worn to locate in the benefit of. In addition, the auxiliary member 3 is formed by using the material remaining after the drawing member 10 is formed by the punching process, so that the material is saved and the cost is reduced.

The embodiment of the utility model also provides a magnetic latching relay, which comprises a base 300, a contact structure 500, a lead-out structure 100 and an alternating current transformer 200 as shown in fig. 7 and 8. The contact structure 500 is disposed on the base 300, and the contact structure 500 includes two parallel spring plates, each spring plate having a static spring portion 503 and a dynamic spring portion 501. The extraction structure 100 is the extraction structure described in any of the embodiments above. 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 spring pieces, and the second lead portion 2 of the lead structure 100 extends out of the base 300 from the side surface of the base 300. The ac transformer 200 is disposed outside the base 300. The ac transformer 200 has a mounting hole, the second lead-out portion 2 and the auxiliary member 3 are inserted into the mounting hole, and the ends of the second lead-out portion 2 and the auxiliary member 3 away from the first lead-out portion 1 protrude from the mounting hole.

The relay structure of the embodiment of the present utility model is the same as that described in the above embodiment, for example, the relay further includes the magnetic circuit structure 600, the push card 700, the coil 402 structure, and the like of the above embodiment, and will not be described in detail here.

As shown in fig. 8 to 10, the magnetic latching relay according to the embodiment of the present utility model further includes a push card 700 disposed on the base 300, one end of the push card 700 is connected to the movable spring portion 501, and the push card 700 is located below the second lead-out portion 2 of the lead-out structure 100 and is capable of moving below the second lead-out portion 2.

As shown in fig. 8, the contact structure 500 according to the embodiment of the present utility model further includes a compression spring 505, where the compression spring 505 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 to the movable spring part 501 is achieved by the compression spring 505. Other parts of the pushing card 700 are connected with the swing arm of the magnetic circuit structure 600, when forward pulse voltage is introduced to the coil 402, the swing arm 604 of the magnetic circuit structure 600 drives the pushing card 700 to move, the pushing card 700 pushes the movable spring part 501 through the pressure spring 505, so that the movable contact 502 on the movable spring part 501 of one reed is closed with the fixed contact 504 on the fixed spring part 503 of the other reed, and the relay is closed. The load current flows through the lead-out structure 100 via the static spring portion 503, so that the external load circuit is turned on.

In order to more clearly show the connection of the lead-out structure 100 to the static spring portion 503, fig. 10 shows the structure of the magnetic latching relay with the base 300 removed, and fig. 11 is a schematic view of retaining only the base 300, the push card 700 and the lead-out structure 100. As shown in fig. 10 and 11, the portion of the second lead-out portion 2 of the lead-out member 10 is disposed in the base 300, and the push card 700 is located below the portion of the second lead-out portion 2 and is not in contact with the second lead-out portion 2, and the push card 700 can move along with the swing arm 604, so that the second lead-out portion 2 plays a role of giving way to the push card 700, and smooth movement of the push card 700 is ensured.

In some embodiments, as shown in fig. 9 and 10, the magnetic latching relay includes two contact structures 500 and two lead out structures 100, each lead out structure 100 being connected to one static spring portion 503 in each contact structure 500, respectively. One end of the push card 700 is connected to one movable spring part 501 of one of the contact structures 500 (e.g., connected by the compression spring 505), the other end is connected to one movable spring part 501 of the other contact structure 500 (e.g., connected by the other compression spring 505), and the swing arm 604 may be movably connected to a portion of the push card 700 located between both ends.

In some embodiments, as shown in fig. 8-10, the magnetic latching relay may further include a pin 800. The lead-out leg 800 is connected to the second lead-out portion 2 and an end of the auxiliary 3. The pin 800 is used for connecting with an external load circuit, for example, the pin 800 can be plugged into a plug interface of a load to realize electrical connection.

In summary, in the magnetic latching relay according to the embodiment of the present utility model, the materials of the first lead-out portion 1, the second lead-out portion 2 and the auxiliary member 3 of the lead-out structure 100 are the same, so that the current densities are the same, and the impedance of the load circuit is reduced. By fixedly connecting the auxiliary member 3 to the second lead-out portion 2, the current carrying area is increased and the temperature rise is reduced. At the same time, the second lead-out portion 2 can be set narrower, so that the magnetic latching relay can configure the ac transformer 200 of smaller specification. The lead-out structure 100 is formed by a stamping process, so that materials are saved and cost is reduced.

It will be appreciated that the various embodiments/implementations provided by the utility model may be combined with one another without conflict and are not illustrated here.

In embodiments of the present utility model, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more, unless expressly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

In the description of the embodiments of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and to simplify the description, rather than to indicate or imply that the devices or units referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the embodiments of the present utility model.

In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the embodiments of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present utility model and is not intended to limit the embodiment of the present utility model, and various modifications and variations can be made to the embodiment of the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present utility model should be included in the protection scope of the embodiments of the present utility model.

Claims (10)

1. An extraction structure, comprising:

The extraction piece comprises a first extraction part and a second extraction part, and one end of the second extraction part is connected with one side of the first extraction part; the width of the second extraction part is smaller than that of the first extraction part in the width direction of the extraction piece; the first lead-out part is used for being electrically connected with the static spring part of the relay;

at least one auxiliary piece fixedly connected to the second lead-out part;

Wherein the lead-out member is formed by a punching process, and the auxiliary member is formed by using a material remaining after the lead-out member is formed by the punching process.

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

3. The lead-out structure according to claim 2, wherein the first lead-out portion has a first surface and a second surface opposite to the first surface in a thickness direction of the lead-out member, 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. A lead-out structure according to claim 2 or 3, wherein one side face of the first lead-out portion is flush with one side face of the second lead-out portion in the width direction of the lead-out member.

5. A lead-out structure according to claim 3, wherein 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 member, the width of the auxiliary member is smaller than or equal to the width of the second lead-out portion.

6. The lead-out structure according to claim 1, wherein the auxiliary member and the second lead-out portion are used for connecting an ac transformer, and a total thickness of the auxiliary member and the second lead-out portion is smaller than or equal to a diameter of a mounting hole of the ac transformer; the maximum widths of the second leading-out part and the auxiliary piece are smaller than or equal to the diameter of the mounting hole of the alternating current transformer.

7. The lead-out structure according to claim 1, wherein the number of the auxiliary members is plural, and the plural auxiliary members are provided on one side or opposite sides of the second lead-out portion.

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

9. A magnetic latching relay, comprising:

A base;

The contact structure is arranged on the base and comprises two parallel reeds, and each reed is provided with a static reed part and a movable reed part;

The lead-out structure according to any one of claims 1 to 8, wherein a first lead-out portion of the lead-out structure is connected to one end of the static spring portion of one of the two juxtaposed reeds, and a second lead-out portion of the lead-out structure protrudes from a side surface of the base;

The alternating current transformer is arranged outside the base and is provided with a mounting hole, the second leading-out part and the auxiliary piece of the leading-out structure penetrate through the mounting hole, and the second leading-out part and the end part, far away from the first leading-out part, of the auxiliary piece extend out of the mounting hole.

10. The magnetic latching relay of claim 9, further comprising:

The pushing card is arranged on the base, one end of the pushing card is connected with the movable spring part, and the pushing card is positioned below the second leading-out part and can move below the second leading-out part.