CN220963169U - Magnetic latching relay - Google Patents

Abstract

The utility model provides a magnetic latching relay which comprises a base, a micro switch and a magnetic circuit structure. The micro switch is arranged on the base; the micro switch comprises a shell and an elastic sheet, wherein the elastic sheet extends from the shell to a direction far away from the shell. The magnetic circuit structure comprises an armature, a permanent magnet and an injection molding piece. The injection molding includes: a main body part which is coated on the permanent magnet and part of the armature, wherein the permanent magnet can swing; and the poking part is integrally injection molded with the main body part and is provided with a bulge protruding towards the elastic piece. When the permanent magnet swings to a direction approaching the micro switch, the bulge moves to a direction approaching the elastic sheet to drive the elastic sheet to move to a direction approaching the shell, so that the micro switch is connected; when the permanent magnet swings in a direction away from the micro switch, the protrusion moves in a direction away from the elastic piece, and the elastic piece resets to disconnect the micro switch. The magnetic latching relay provided by the utility model enables the monitoring of the micro switch to be more accurate, can prolong the service life and saves the space.

Description

Magnetic latching relay

Technical Field

The utility model relates to the technical field of relays, in particular to a magnetic latching relay.

Background

The magnetic latching relay is an electronic switch which plays a role in switching on and off a load circuit. The magnetic latching relay includes a contact structure. The contact structure comprises a movable spring part and a static spring part, wherein the movable spring part is provided with a movable contact, and the static spring part is provided with a static contact. When a forward pulse voltage is applied to the magnetic latching relay, the movable contact and the stationary contact are closed, so that an external load circuit is conducted; when a reverse pulse voltage is applied to the magnetic latching relay, the movable contact is disconnected from the stationary contact, so that an external load circuit is disconnected.

In order to monitor whether the movable contact and the stationary contact are in a closed state or an open state, a micro switch and a triggering component can be arranged in the magnetic latching relay, the triggering component can synchronously move with the movable contact to trigger the on-off of the micro switch, and the closed or open state of the movable contact and the stationary contact is judged through the state of the micro switch. However, in the prior art, the volume of the triggering part is usually smaller, larger deformation is easy to generate in the process of triggering the micro switch, when the deformation is too large, the connection and disconnection states of the micro switch are inaccurate, the monitoring function is lost, the strength of the triggering part is weaker, and the micro switch is easy to damage after being used for a certain time. If the volume of the trigger member is increased, a large space is occupied, which is disadvantageous in downsizing the magnetic latching relay.

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 magnetic latching relay, so that the monitoring of a micro switch is more accurate, the service life can be prolonged, and the space can be saved.

The embodiment of the utility model provides a magnetic latching relay which comprises a base, a micro switch and a magnetic circuit structure. The micro switch is arranged on the base; the micro switch comprises a shell and an elastic sheet, wherein the elastic sheet extends from the shell to a direction away from the shell; the magnetic circuit structure comprises an armature, a permanent magnet and an injection molding piece; wherein, the injection molding includes: the main body part is coated on the permanent magnet and part of the armature to ensure that the permanent magnet is fixedly connected with the armature, and the permanent magnet can swing; the poking part is integrally injection molded with the main body part and is provided with a bulge protruding towards the elastic piece; when the permanent magnet swings to a direction approaching the micro switch, the protrusion of the poking part moves to a direction approaching the elastic sheet and drives the elastic sheet to move to a direction approaching the shell, so that the micro switch is connected; when the permanent magnet swings in a direction away from the micro switch, the protrusion moves in a direction away from the elastic piece, and the elastic piece resets to disconnect the micro switch.

In some embodiments of the utility model, the toggle portion includes a mounting portion and a transition portion, the transition portion being located between the mounting portion and the boss, the transition portion tapering in longitudinal dimension toward the boss.

In some embodiments of the utility model, the first dimension of the protrusion in the longitudinal direction is less than the smallest dimension of the transition in the longitudinal direction.

In some embodiments of the utility model, the transition has at least one first stiffener.

In some embodiments of the present utility model, the first reinforcing ribs have a plurality, and a plurality of the first reinforcing ribs are arranged in parallel or in a crossing manner.

In some embodiments of the utility model, the transition is a frame-shaped structure, and the first stiffener is located in an opening of the frame-shaped structure.

In some embodiments of the present utility model, the toggle part further includes a toggle lever vertically provided to the mounting part.

In some embodiments of the utility model, the mounting portion is provided with at least one second stiffener.

In some embodiments of the utility model, the mounting portion has a dimension in the longitudinal direction and a dimension in the lateral direction that are both greater than the dimension of the microswitch.

In some embodiments of the utility model, the magnetic circuit structure further comprises a coil assembly, wherein the coil assembly is positioned on the base and is positioned on one side of the magnetic circuit structure in the longitudinal direction; the connection part of the poking part and the main body part is in arc transition, so that the poking part extends from the main body part to the upper part of the coil assembly and is not contacted with the coil assembly.

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 stirring part and the main body part are integrally injection molded, and the main body part is coated on the permanent magnet and the armature, so that the main body part has larger volume, the strength of the stirring part is increased, the stirring part is not easy to deform, the service life is prolonged, and the magnetic latching relay is monitored more accurately. And the main body part is coated on the permanent magnet and the armature, so that the magnetic latching relay does not occupy a larger space and is beneficial to miniaturization of the magnetic latching relay.

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 a schematic top view of a magnetic latching relay (with a cover removed) according to some embodiments of the present utility model;

FIG. 2 is a schematic perspective view of a magnetic latching relay (with the mount removed) according to some embodiments of the present utility model;

FIG. 3 is a schematic top view of a magnetic latching relay (with the mount and injection molded parts removed) according to some embodiments of the present utility model;

FIG. 4 is a schematic perspective view of an injection molding according to some embodiments of the present utility model;

FIG. 5 is a schematic perspective view of an injection molding according to some embodiments of the present utility model;

fig. 6 is a schematic diagram of a micro switch according to some embodiments of the present utility model.

Reference numerals illustrate:

100. a base; 200. a micro-switch; 21. a housing; 22. an elastic sheet; 23. a common terminal; 24. a first terminal; 25. a second terminal; 300. a magnetic circuit structure; 31. an armature; 32. a permanent magnet; 33. an injection molding; 331. a main body portion; 332. a toggle part; 3321. a protrusion; 3322. a mounting part; 3323. a transition section; 3324. a first reinforcing rib; 3325. a deflector rod; 3326. a second reinforcing rib; 333. swing arms; 334. a rotating shaft; 34. a yoke; 400. a coil assembly; 41. a coil former; 42. a coil; 500. a fixing frame; 600. a contact structure; 61. a moving spring part; 62. a static spring part; 63. a movable contact; 64. a stationary contact; 65. a pressure spring; 700. pushing the card; x, transverse direction; y, longitudinal direction; d1, a first dimension; d2, minimum size.

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.

As shown in fig. 1 to 3, an embodiment of the present utility model provides a magnetic latching relay including a base 100, a micro switch 200, and a magnetic circuit structure 300.

As shown in fig. 1, the micro switch 200 is provided on the base 100. As shown in fig. 6, the micro switch 200 includes a housing 21 and an elastic piece 22, and the elastic piece 22 extends from the housing 21 in a direction away from the housing 21.

As shown in fig. 6, the elastic sheet 22 may be a metal having elasticity. One end of which is connected to the housing 21 and the other end of which extends obliquely away from the housing 21 compared to the housing 21. The microswitch 200 further comprises three terminals, a common terminal 23, a first terminal 24 and a second terminal 25, respectively. When no force is applied to the elastic piece 22, the common terminal 23 is connected to the first terminal 24, and the micro switch 200 is in the off state, and when a force is applied to the elastic piece 22, that is, the elastic piece 22 is pushed to move the elastic piece 22 in a direction approaching the housing 21, the common terminal 23 is disconnected from the first terminal 24 and connected to the second terminal 25, and the micro switch 200 is in the on state. A display device may be provided to be electrically connected to the micro switch 200, and the on and off states of the micro switch 200 may be determined according to the state of the display device.

As shown in fig. 2 and 3, the magnetic circuit structure 300 includes an armature 31, a permanent magnet 32, and an injection-molded piece 33. As shown in fig. 3, the number of armatures 31 is two, which are provided on both sides of the permanent magnet 32 in the longitudinal direction Y and extend beyond both sides of the permanent magnet 32 in the lateral direction X. As shown in fig. 2, the permanent magnet 32 and the armature 31 are fixed together by an injection molding process. Specifically, as shown in fig. 2 and 4, the injection piece 33 may be formed by an injection molding process. The injection piece 33 includes a main body portion 331 and a toggle portion 332. The main body 331 is covered on the permanent magnet 32 and a part of the armature 31, so that the permanent magnet 32 and the armature 31 are fixedly connected, and both ends of the armature 31 can be exposed to the main body 331. The toggle portion 332 is integrally injection molded with the main body portion 331, and the toggle portion 332 has a protrusion 3321 protruding toward the elastic piece 22 of the micro switch 200.

As shown in fig. 1, the magnetic latching relay further includes a fixing frame 500 disposed on the base 100 and located above the injection molding member 33 for limiting the permanent magnet 32. As shown in fig. 4, the two sides of the main body 331 of the injection molding member 33 are provided with rotating shafts 334 respectively connected with the shaft hole on the base 100 and the shaft hole on the fixing frame 500, so that the injection molding member 33 can rotate. The injection molding 33 further includes swing arms 333 located at both sides of the main body 331.

As shown in fig. 1 to 3, the magnetic latching relay further includes a coil assembly 400 located on the base 100 and located at one side of the magnetic circuit structure 300 in the longitudinal direction Y. Specifically, the coil assembly 400 includes a bobbin 41, a coil 42, and an iron core (not shown in the drawings). The core is located in the bobbin 41. The coil 42 is wound around the bobbin 41.

As shown in fig. 3, the magnetic circuit structure 300 further includes a yoke 34 fixedly disposed on the base 100. The number of yokes 34 is two, and the yokes are positioned on both sides of the bobbin 41 and are in contact with the cores, respectively.

As shown in fig. 3, the magnetic latching relay further includes a contact structure 600. The contact structure 600 includes two juxtaposed leaves, each leaf having a movable spring portion 61 and a static spring portion 62. The movable spring portion 61 is provided with a movable contact 63, and the stationary spring portion 62 is provided with a stationary contact 64. The movable contact 63 of one of the reeds corresponds to the stationary contact 64 of the other reed, and the stationary contact 64 of one of the reeds corresponds to the movable contact 63 of the other reed. The contact structure 600 further includes a compression spring 65, and the compression spring 65 is connected to the movable spring portion 61.

With continued reference to fig. 3, the magnetic latching relay further includes a push card 700 disposed on the base 100, one end of which is connected to the compression spring 65 and the other end of which is movably connected to the swing arm 333 of the injection molding 33. So that when the swing arm 333 swings, the push card 700 can be driven to move, and then the moving spring portion 61 is driven to move by the compression spring 65.

When the coil 42 is supplied with a forward pulse voltage, the permanent magnet 32 swings to one side, and the injection molding piece 33 and the armature 31 are fixedly connected with the permanent magnet 32, so that the injection molding piece 33 is driven to swing around the rotating shaft 334, the armature 31 swings along with the injection molding piece, the armature 31 is enabled to be overlapped with the yokes 34 at the two sides, and the permanent magnet 32, the armature 31, the yokes 34 and the iron core form a complete magnetic field. Simultaneously, the swing arm 333 of the injection molding piece 33 swings, the swing arm 333 drives the pushing card 700 to move, the pushing card 700 pushes the movable spring part 61 through the pressure spring 65, so that the movable contact 63 of one reed is closed with the fixed contact 64 of the other reed, namely, the two reeds are closed, and the magnetic latching relay is closed. When the coil 42 is de-energized, the permanent magnet 32 is able to maintain the magnetic field, i.e., the permanent magnet 32, the armature 31, and the injection molding 33, in a constant position, thereby maintaining the movable contact 63 and the stationary contact 64 in a closed state.

When the coil 42 is energized with a reverse pulse voltage, the permanent magnet 32 swings to the opposite side, and drives the armature 31 to swing to the other side, so that the armature 31 still overlaps the yokes 34 at the two sides after swinging, and another complete magnetic field is formed. At the same time, the swing arm 333 of the injection molding piece 33 swings to the other side, the swing arm 333 drives the push card 700 to move to the opposite direction, so that the push card 700 pulls the movable spring part 61, the movable contact 63 is disconnected from the stationary contact 64, and the relay is disconnected. When the coil 42 is de-energized, the permanent magnet 32 is able to maintain the magnetic field, i.e., the permanent magnet 32, the armature 31 and the injection molding 33, in a position that maintains the movable contact 63 and the stationary contact 64 in an open state.

In the process of swinging the permanent magnet 32, the injection molding member 33 swings with it, so that when the permanent magnet 32 swings in a direction approaching the micro switch 200, the protrusion 3321 of the toggle portion 332 moves in a direction approaching the elastic piece 22, and drives the elastic piece 22 to move in a direction approaching the housing 21 of the micro switch 200, so that the micro switch 200 is turned on. After the coil 42 is de-energized, since the injection molding 33 can be maintained at this position, the positions of the protrusion 3321 of the toggle portion 332 and the elastic piece 22 are unchanged, so that the micro switch 200 is always in the on state in the state where the movable contact 63 and the stationary contact 64 are in the closed state.

When the permanent magnet 32 swings in a direction away from the micro switch 200, the protrusion 3321 of the toggle portion 332 moves in a direction away from the elastic piece 22, and the elastic piece 22 is reset to open the micro switch 200, so that the micro switch 200 is also in an open state when the movable contact 63 is in an open state with the stationary contact 64, and further the open and closed states of the movable contact 63 and the stationary contact 64 inside the magnetic latching relay can be monitored by observing the state of the micro switch 200.

As shown in fig. 4, the toggle portion 332 includes a mounting portion 3322 and a transition portion 3323, the transition portion 3323 is located between the mounting portion 3322 and the protrusion 3321, and the dimension of the transition portion 3323 in the longitudinal direction Y gradually decreases toward the protrusion 3321.

It should be noted that, the "longitudinal direction Y" and the "lateral direction X" mentioned later in the embodiments of the present disclosure may be directions parallel or substantially parallel to two adjacent side walls of the chassis 100, and the "longitudinal direction Y" may be perpendicular or substantially perpendicular to the "lateral direction X". Wherein "substantially" is understood to mean that the angular error is in the range of 1 to 10 °.

As shown in fig. 2 and 4, the transition portion 3323 gradually decreases in size in the longitudinal direction Y such that the transition portion 3323 is generally triangular in shape to facilitate connection with the protrusion 3321. In addition, the transition portion 3323 is formed in a triangular shape, so that the firmness of the transition portion 3323 can be increased and deformation thereof can be prevented.

In some embodiments, as shown in fig. 4, a first dimension d1 of the protrusion 3321 in the longitudinal direction Y is less than a minimum dimension d2 of the transition 3323 in the longitudinal direction Y. The size of the protrusion 3321 is made as small as possible so as to be accurately coupled to and move the elastic piece 22 of the micro switch 200.

In some embodiments, as shown in fig. 4, the transition portion 3323 has at least one first stiffener 3324.

For example, the transition 3323 may have a first stiffener 3324, and the first stiffener 3324 may be disposed along the transverse direction X or along the longitudinal direction Y. By providing the first reinforcing rib 3324, the strength of the transition portion 3323 can be increased, and the transition portion is not easily deformed.

With continued reference to fig. 4, in some embodiments, the first stiffener 3324 has a plurality of first stiffeners 3324 arranged side-by-side or intersecting.

For example, the first reinforcement 3324 may have two, three, four, five, six or more, and those skilled in the art may set it according to actual circumstances without being particularly limited thereto. The plurality of first reinforcing ribs 3324 may be juxtaposed in the lateral direction X and the longitudinal direction Y or may be disposed to intersect. When the plurality of first reinforcing ribs 3324 are disposed in a crossing manner, the included angle of the crossing first reinforcing ribs 3324 may be 0 ° to 90 °. For example, the included angle may be 30 °, 45 °, 60 °, 70 °, 80 ° or 90 °, and those skilled in the art may set according to practical situations, which is not limited herein. As shown in fig. 4, two first reinforcing ribs 3324 are provided, and the two first reinforcing ribs 3324 are disposed to cross each other perpendicularly. The plurality of first reinforcing ribs 3324 may be partially juxtaposed and partially crossed.

In some embodiments, as shown in fig. 4, the transition portion 3323 is a frame-shaped structure and the first stiffener 3324 is positioned in an opening of the frame-shaped structure.

As shown in fig. 4, the transition portion 3323 has a frame structure, that is, the transition portion 3323 has a closed frame and an opening passing through the middle of the frame. The first reinforcing rib 3324 is positioned in the opening and connected with the inner side of the frame, so that the transition portion 3323 is in a hollowed-out structure. The structure of the transition portion 3323 not only can reduce the weight of the transition portion 3323, but also can more flexibly follow the injection molding piece 33 when the permanent magnet 32 swings, so that the protrusion 3321 can more accurately drive the elastic piece to move 22. Moreover, the hollow structure of the transition portion 3323 can reduce stress of the transition portion 3323. For example, in the process of manufacturing the magnetic latching relay, glue is injected into the relay, and after the glue injection, the magnetic latching relay is put into an oven for baking. During the baking process, the first reinforcing rib 3324 may be slightly deformed, and the hollow portion of the opening may accommodate the small deformation of the portion, so as to eliminate the stress generated by the small deformation, further enhance the strength of the stirring portion 332, and reduce the deformation of the stirring portion 332. In addition, the material can be reduced, and the cost can be reduced.

Of course, in other embodiments, the transition portion 3323 may not have an opening, and the first reinforcing rib 3324 is disposed on the side surface of the transition portion 3323, so that the manufacturing process can be simplified. Or in some embodiments, the transition 3323 does not have openings nor first ribs 3324, but rather is a plate-like structure.

In some embodiments, as shown in fig. 4, the toggle portion 332 further includes a toggle lever 3325, where the toggle lever 3325 is vertically disposed on the mounting portion 3322.

After the magnetic latching relay cover (not shown) is mounted on the base 100, the lever 3325 can be extended out of the cover through the through hole of the cover. When an emergency occurs, the lever 3325 may be manually toggled to turn on or off the relay, thereby turning on or off the load circuit.

In some embodiments, as shown in fig. 5, the mounting portion 3322 is provided with at least one second stiffener 3326.

Referring to fig. 5, at least one second reinforcement rib 3326 is provided in an area around the lever 3325 on the mounting portion 3322. In some embodiments, a plurality of second reinforcing ribs 3326 may be provided. The plurality of second reinforcing bars 3326 may be arranged in parallel or in a crossing arrangement. When the plurality of second reinforcing ribs 3326 are disposed in a crossing manner, the included angle of the crossing second reinforcing ribs 3326 may be 0 ° to 90 °. For example, the included angle may be 30 °, 45 °, 60 °, 70 °, 80 ° or 90 °, and those skilled in the art may set according to practical situations, which is not limited herein. As shown in fig. 5, two second reinforcing ribs 3326 are provided, and the two second reinforcing ribs 3326 are disposed to cross each other perpendicularly. The plurality of second reinforcing ribs 3326 may be partially juxtaposed and partially crossed.

With continued reference to fig. 5, the mounting portion 3322 may also have a hollowed-out area to further reduce the weight of the injection molding piece 33, and reduce the load of the permanent magnet 32 during swinging, so that the protrusion 3321 of the toggle portion 332 can more precisely drive the elastic piece 22 to move. In addition, the hollowed-out area can accommodate the tiny deformation of the second reinforcing rib 3326, eliminate the stress generated by the tiny deformation, reduce the deformation of the poking part 332, further enhance the strength of the poking part 332, save materials and reduce the cost.

Of course, the mounting portion 3322 may not have a hollowed-out area, and the second reinforcing ribs 3326 may be disposed on the side surface of the mounting portion 3322, so that the manufacturing process can be simplified. Alternatively, the mounting portion 3322 may have a plate-like structure without a hollowed-out area or the second reinforcing ribs 3326.

In some embodiments, the mounting portion 3322 has a dimension in the longitudinal direction Y and a dimension in the lateral direction X that are both greater than the dimension of the micro switch 200.

As shown in fig. 1 and 2, the size of the mounting portion 3322 in the longitudinal direction Y is larger than the size of the micro switch 200 in the longitudinal direction Y, and the size of the mounting portion 3322 in the lateral direction X is larger than the size of the micro switch 200 in the lateral direction X, that is, the area of the mounting portion 3322 can cover the micro switch 200. Therefore, the poking portion 332 in the embodiment of the disclosure has a larger size, so that the poking portion has higher strength, is not easy to deform in the process of propping against the elastic sheet 22, and can more accurately switch on and off the micro switch 200, thereby improving the accuracy of monitoring.

In some embodiments, as shown in fig. 2 and 4, the connection between the toggle portion 332 and the main portion 331 is in a circular arc transition, such that the toggle portion 332 extends from the main portion 331 to above the coil assembly 400 and is not in contact with the coil assembly 400.

As shown in fig. 2, the micro switch 200 is located at one side of the coil assembly 400 in the transverse direction X, so that the protrusion 3321 can precisely drive the elastic piece 22 to move during the swinging process, and the toggle portion 332 extends from the main body 331 to above the coil assembly 400 and has a certain distance from the coil assembly 400, so as to avoid friction with the coil assembly 400 during the swinging process of the toggle portion 332, and of course, the smaller the distance is, the better the space is saved. "above" in the embodiments of the present disclosure may be understood as a direction away from the base toward the open side of the base 100 in a direction perpendicular to the bottom wall of the base 100. For example, the toggle portion 332 is located above the coil assembly 400, and the fixing frame 500 is located above the main body portion 331 of the injection molding 33.

The toggle portion 332 is disposed above the coil assembly 400, so that the toggle portion 332 is higher than the main body portion 331, and therefore, the position of the toggle portion 332 can be raised at the arc transition at the connection between the toggle portion 332 and the main body portion 331. In addition, the arcuate transition can more closely conform to the arcuate surface of the coil 42, can reduce the footprint, and can prevent friction with the surface of the coil 42.

In addition, the toggle portion 332 in the embodiment of the present disclosure is in a sheet shape, and although the size of the toggle portion 332 is increased, it still occupies a small space above the coil assembly 400, so that the space between the cover and the coil assembly 400 is fully utilized, and the volume of the magnetic latching relay is not increased.

To sum up, in the magnetic latching relay according to the embodiment of the present disclosure, the toggle portion 332 and the main body portion 331 are integrally injection molded, and the main body portion 331 is coated on the permanent magnet 32 and the armature 31, so that the main body portion 331 has a larger volume, the strength of the toggle portion 332 is increased, the toggle portion 332 is not easy to deform, the service life is prolonged, and the magnetic latching relay is monitored more accurately. And the main body 331 is coated on the permanent magnet 32 and the armature 31, so that a large space is not occupied, and the miniaturization of the magnetic latching relay is facilitated.

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. A magnetic latching relay, comprising:

A base;

the micro switch is arranged on the base; the micro switch comprises a shell and an elastic sheet, wherein the elastic sheet extends from the shell to a direction away from the shell;

the magnetic circuit structure comprises an armature, a permanent magnet and an injection molding piece;

wherein, the injection molding includes:

The main body part is coated on the permanent magnet and part of the armature to ensure that the permanent magnet is fixedly connected with the armature, and the permanent magnet can swing;

The poking part is integrally injection molded with the main body part and is provided with a bulge protruding towards the elastic piece;

When the permanent magnet swings to a direction approaching the micro switch, the protrusion of the poking part moves to a direction approaching the elastic sheet and drives the elastic sheet to move to a direction approaching the shell, so that the micro switch is connected; when the permanent magnet swings in a direction away from the micro switch, the protrusion moves in a direction away from the elastic piece, and the elastic piece resets to disconnect the micro switch.

2. The magnetic latching relay according to claim 1, wherein the toggle portion includes a mounting portion and a transition portion, the transition portion being located between the mounting portion and the boss, the transition portion being tapered in a longitudinal dimension toward the boss.

3. The magnetic latching relay according to claim 2, wherein a first dimension of the protrusion in the longitudinal direction is less than a minimum dimension of the transition in the longitudinal direction.

4. The magnetic latching relay of claim 2, wherein the transition portion has at least one first stiffener.

5. The magnetic latching relay according to claim 4, wherein the first reinforcing ribs are provided in plural, and the plural first reinforcing ribs are arranged in parallel or in a crossing arrangement.

6. The magnetic latching relay of claim 5, wherein the transition is a frame-shaped structure and the first stiffener is located in an opening of the frame-shaped structure.

7. The magnetic latching relay according to claim 2, wherein the toggle portion further comprises a toggle lever vertically provided to the mounting portion.

8. The magnetic latching relay of claim 7, wherein said mounting portion is provided with at least one second stiffener.

9. The magnetic latching relay according to claim 2, wherein the mounting portion has a dimension in the longitudinal direction and a dimension in the lateral direction that are both larger than the dimension of the micro switch.

10. The magnetic latching relay according to any one of claims 1 to 9, further comprising a coil assembly located on the base and on one side of the magnetic circuit structure in the longitudinal direction;

The connection part of the poking part and the main body part is in arc transition, so that the poking part extends from the main body part to the upper part of the coil assembly and is not contacted with the coil assembly.