CN117894636A - Self-holding relay - Google Patents

Abstract

The invention provides a self-holding relay, and relates to the technical field of relays. The self-sustaining relay includes: the bracket is provided with a circuit board; the electromagnetic coil comprises a reset coil and a set coil, the reset coil and the set coil are respectively connected with the bracket, and the reset coil and the set coil are respectively and electrically connected with the circuit board; the armature iron is movably connected with the bracket, and at least part of the armature iron is positioned between the reset coil and the setting coil; the switch assembly comprises a first static contact piece, a second static contact piece, a movable contact piece, an elastic piece and a switch wrench, wherein the first end of the switch wrench is connected with the armature, the second end of the switch wrench is connected with the movable contact piece, and the elastic piece is connected between the switch wrench and the movable contact piece. By applying the technical scheme of the invention, after the electromagnetic coil is powered off, the elastic piece provides the holding force for keeping the movable contact piece and the static contact piece continuously connected, the electromagnetic coil is not required to keep a continuously powered-on state, the power consumption of the relay is reduced, and the energy conservation and the emission reduction are facilitated.

Description

Self-holding relay

Technical Field

The invention relates to the technical field of relays, in particular to a self-retaining relay.

Background

When the traditional electromagnetic relay works, exciting current is continuously supplied to the coil of the electromagnetic relay to keep the contact of the electromagnetic relay attracted, so that an electromagnetic system of the electromagnetic relay can generate considerable power consumption, the power supply energy is additionally consumed, the coil of the relay can heat, and the reliability of the system is reduced. In addition, the electrical contact of the traditional relay is of a 'point' structure, the contact resistance is large, and the contact resistance is easily ablated by an electric arc in the switching process, so that the switching capacity is deteriorated, and even contact adhesion occurs.

Aiming at the problem of high power consumption of the relay, no effective solution is proposed at present.

Disclosure of Invention

The invention mainly aims to provide a self-holding relay so as to solve the problem of high power consumption of a relay in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a self-sustaining relay comprising: the bracket is provided with a circuit board; the electromagnetic coil comprises a reset coil and a set coil, the reset coil and the set coil are respectively connected with the bracket, and the reset coil and the set coil are respectively and electrically connected with the circuit board; the armature is movably connected with the bracket, at least part of the armature is positioned between the reset coil and the setting coil, and moves relative to the bracket during the power-on process of the electromagnetic coil so that the armature has a first position attracted to the reset coil and disconnected from the setting coil, and has a second position attracted to the setting coil and disconnected from the reset coil; the switch assembly comprises a first static contact piece, a second static contact piece, a movable contact piece, an elastic piece and a switch spanner, wherein the first end of the switch spanner is connected with an armature, the second end of the switch spanner is connected with the movable contact piece, the elastic piece is connected between the switch spanner and the movable contact piece, the movable contact piece is connected with the first static contact piece when the armature is in a first position, the elastic piece provides a first retaining force for enabling the movable contact piece to be connected with the first static contact piece after a reset coil is switched from an electrified state to a power-off state, the movable contact piece is connected with the second static contact piece when the armature is in a second position, and the elastic piece provides a second retaining force for enabling the movable contact piece to be connected with the second static contact piece after the set coil is switched from the electrified state to the power-off state, wherein the armature is in the first position and the second position, and the elastic piece is in a compressed state.

Further, the elastic piece is an elastic piece, and in the moving process of the switch wrench, the elastic piece is deformed in an arc shape along the opposite moving direction of the switch wrench.

Further, the switch assembly includes: the switch spanner is rotationally connected with the base, and the first static contact piece and the second static contact piece are respectively connected with the base; the third static contact piece is connected with the base and is positioned between the first static contact piece and the second static contact piece; the movable contact piece is provided with an A section, a B section and a C section which are sequentially connected, wherein the A section is arranged opposite to the first static contact piece, the B section is arranged opposite to the third static contact piece, the C section is arranged opposite to the second static contact piece, the first end of the B section is connected with the switch spanner through an elastic piece, and the second end of the B section is rotationally connected with the third static contact piece.

Further, the contact of the first static contact is in surface contact with the section A of the movable contact, and the contact of the second static contact is in surface contact with the section B of the movable contact.

Further, the contact of the first static contact has a first arc-shaped bulge, the section A of the movable contact has a first arc-shaped recess, the first arc-shaped bulge is in contact connection with the first arc-shaped recess through an arc surface, and/or the contact of the second static contact has a second arc-shaped bulge, the section C of the movable contact has a second arc-shaped recess, and the second arc-shaped bulge is in contact connection with the second arc-shaped recess through an arc surface.

Further, the contact of the third static contact is provided with a third arc-shaped bulge, the section B of the movable contact is provided with a third arc-shaped recess, and the third arc-shaped bulge is rotationally connected with the third arc-shaped recess.

Further, the axis of the reset coil and the axis of the setting coil are arranged in a collinear way, the armature is connected with the bracket in a sliding way, the armature is positioned between the reset coil and the setting coil, and the armature slides along the axis direction of the electromagnetic coil.

Further, a limit groove is formed in the support, a limit rod is arranged on the armature, and at least part of the limit rod extends into the limit groove and is in sliding connection with the limit groove.

Further, a bending section is arranged on the limiting rod, a limiting space is formed between the bending section and the armature, the bending section extends out of the limiting groove after passing through the limiting groove, and the bracket is positioned in the limiting space.

Further, the axis of the reset coil and the axis of the setting coil are arranged in parallel, the armature is rotationally connected with the bracket, the rotation axis of the armature is arranged perpendicular to the axis of the electromagnetic coil, and the rotation axis of the armature is positioned between the axis of the reset coil and the axis of the setting coil.

By applying the technical scheme of the embodiment, the elastic piece is connected between the switch spanner and the movable contact piece, when the armature is in the first position and the second position, the elastic piece is in a compressed state, the movable contact piece is tightly pressed with the first static contact piece or the second static contact piece through elastic force, and before the armature receives reverse suction force, the movable contact piece and the first static contact piece or the second static contact piece are always kept in a tightly pressed state. According to the self-holding relay, after the electromagnetic coil is powered off, the elastic piece provides the holding force for keeping the movable contact piece and the static contact piece continuously connected, the electromagnetic coil is not required to keep a continuously powered-on state, the power consumption of the relay is reduced, and energy conservation and emission reduction are facilitated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

fig. 1 shows a schematic structural view of a first embodiment of a latching relay according to the present invention;

fig. 2 shows a schematic structural view of a second embodiment of the latching relay according to the present invention;

fig. 3 shows a schematic structural view of a third embodiment of the latching relay according to the present invention;

fig. 4 shows a schematic structural view of an embodiment of a bracket of a latching relay according to the present invention;

fig. 5 shows a schematic structural illustration of an exemplary embodiment of an armature of a latching relay according to the invention;

fig. 6 shows a schematic structural view of a first embodiment of a switching assembly of a latching relay in accordance with the present invention;

fig. 7 shows a schematic structural view of a second embodiment of a switching assembly of a latching relay in accordance with the present invention;

fig. 8 shows a schematic structural view of a first embodiment of a latching relay body in accordance with the present invention;

fig. 9 shows a schematic structural view of a fourth embodiment of the latching relay in accordance with the present invention;

fig. 10 shows a schematic structural view of a first embodiment of an electromagnetic system of a latching relay according to the present invention;

fig. 11 shows a schematic structural view of a third embodiment of a switching assembly of a latching relay in accordance with the present invention;

fig. 12 shows a schematic structural view of a fourth embodiment of a switching assembly of a latching relay in accordance with the present invention;

fig. 13 shows a schematic structural view of a fifth embodiment of the latching relay in accordance with the present invention;

fig. 14 shows a driving circuit diagram of the latching relay according to the present invention.

Wherein the above figures include the following reference numerals:

1. a bracket; 11. a limit groove; 12. a first support plate; 13. a second support plate; 14. a first ear plate; 15. a second ear plate; 16. a first mounting plate; 17. a second mounting plate; 18. a third mounting plate; 19. an extension plate;

2. a reset coil;

3. setting a coil;

4. an armature; 41. a limit rod; 411. a bending section; 42. connecting sleeves; 43. a U-shaped frame;

5. a switch assembly; 51. the first static contact piece; 52. the second static contact piece; 53. a third stationary contact; 54. a movable contact; 55. an elastic member; 56. a switch spanner; 57. a base; 571. a first connection plate; 572. a second connecting plate; 58. a contact terminal;

6. a circuit board; 61. a drive terminal;

7. an iron core;

8. a housing.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and that identical reference numerals are used to designate identical devices, and thus descriptions thereof will be omitted.

As shown in connection with fig. 1 to 14, according to a specific embodiment of the present application, a self-sustaining relay is provided.

Specifically, the self-holding relay comprises a bracket 1, an electromagnetic coil, an armature 4 and a switch assembly 5, wherein a circuit board 6 is arranged on the bracket 1; the electromagnetic coil comprises a reset coil 2 and a set coil 3, the reset coil 2 and the set coil 3 are respectively connected with the bracket 1, and the reset coil 2 and the set coil 3 are respectively and electrically connected with the circuit board 6; the armature 4 is movably connected with the bracket 1, and at least part of the armature 4 is positioned between the reset coil 2 and the set coil 3, and the armature 4 moves relative to the bracket 1 during the power-on process of the electromagnetic coil so that the armature 4 has a first position attracted to the reset coil 2 and disconnected from the set coil 3, and has a second position attracted to the set coil 3 and disconnected from the reset coil 2; the switch assembly 5 comprises a first static contact piece 51, a second static contact piece 52, a movable contact piece 54, an elastic piece 55 and a switch spanner 56, wherein a first end of the switch spanner 56 is connected with the armature 4, a second end of the switch spanner 56 is connected with the movable contact piece 54, the elastic piece 55 is connected between the switch spanner 56 and the movable contact piece 54, when the armature 4 is in a first position, the movable contact piece 54 is connected with the first static contact piece 51, when the reset coil 2 is switched from an electrified state to a power-off state, the elastic piece 55 provides a first retaining force for connecting the movable contact piece 54 with the first static contact piece 51, when the armature 4 is in a second position, the movable contact piece 54 is connected with the second static contact piece 52, when the set coil 3 is switched from the electrified state to the power-off state, the elastic piece 55 provides a second retaining force for connecting the movable contact piece 54 with the second static contact piece 52, and when the armature 4 is in the first position and the second position, the elastic piece 55 is in a compressed state.

By applying the technical scheme of the embodiment, the elastic member 55 is connected between the switch wrench 56 and the movable contact piece 54, when the armature 4 is in the first position and the second position, the elastic member 55 is in a compressed state, the elastic member 55 compresses the movable contact piece 54 and the first static contact piece 51 or the second static contact piece 52 through elastic force, and before the armature receives reverse suction force, the movable contact piece 54 and the first static contact piece 51 or the second static contact piece 52 always keep a compressed state. In the self-holding relay, after the electromagnetic coil is powered off, the elastic piece 55 provides the holding force for keeping the movable contact piece 54 and the static contact piece continuously connected, the electromagnetic coil is not required to keep a continuously powered-on state, the power consumption of the relay is reduced, and the energy conservation and emission reduction are facilitated.

Specifically, as shown in fig. 1 and 6, the elastic member 55 is a spring plate, and during the movement of the switch wrench 56, the elastic member 55 is deformed in an arc shape along the opposite direction of the movement of the switch wrench 56. The opposite direction that the elastic member 55 switch spanner 56 moved takes place arc deformation, and the elastic member 55 is crooked towards the quiet contact of waiting to connect the side promptly, and elastic force is transmitted to waiting to connect on the quiet contact through the movable contact, makes movable contact and quiet contact be in the state of continuously compressing tightly, sets up like this and can make elastic member 55 provide the elasticity as the mechanical support power of armature 4, need not to keep on solenoid, has realized the self-holding state of relay.

Specifically, as shown in fig. 6 and 7, the switch assembly 5 includes, in addition to the first stationary contact 51, the second stationary contact 52, the movable contact 54, the elastic member 55, and the switch wrench 56, a base 57 and a third stationary contact 53, the switch wrench 56 is rotatably connected to the base 57, and the first stationary contact 51 and the second stationary contact 52 are respectively connected to the base 57; the third stationary contact 53 is connected to the base 57, and the third stationary contact 53 is located between the first stationary contact 51 and the second stationary contact 52; the movable contact piece 54 has a section a, a section B and a section C that are connected in sequence, the section a is disposed opposite to the first stationary contact piece 51, the section B is disposed opposite to the third stationary contact piece 53, the section C is disposed opposite to the second stationary contact piece 52, the first end of the section B is connected to the switch wrench 56 through the elastic member 55, and the second end of the section B is rotatably connected to the third stationary contact piece 53. The second end of the section B is rotationally connected with the third static contact piece 53, namely the third static contact piece 53 plays a supporting role, relative dislocation between the section A and the first static contact piece 51 is avoided, relative dislocation between the section C and the second static contact piece 52 is avoided, stable switching between the movable contact piece 54 and the first static contact piece 51 and the second static contact piece 52 is realized, after the reset coil 2 or the setting coil 3 passes through current pulses, the armature 4 is attracted to the first position or the second position, meanwhile, the switch spanner 56 is driven to drive the movable contact piece 54 to rotate to be abutted against the first static contact piece 51 or the second static contact piece 52, meanwhile, the elastic piece 55 provides elastic supporting force for the armature 4 and the movable contact piece 54 to keep the two relatively stable, external force and magnetic flux force maintenance are not needed, a self-holding state after the relay coil is powered off is realized, the corresponding coil is powered on only when the switch state needs to be changed, the operation is convenient, the power consumption is reduced, and the environment is protected. In addition, the elastic piece 55 compresses the contact point, so that the current carrying capacity of the self-holding relay can be improved, the contact resistance is obviously reduced, the service life of the contact is prolonged, and the current carrying capacity of the relay is enhanced.

The contact of the first stationary contact 51 is in surface contact with the section a of the movable contact 54, and the contact of the second stationary contact 52 is in surface contact with the section B of the movable contact 54. The surface contact increases the contact area of the contact point, so that the contact resistance is small. Further, the contact of the first stationary contact 51 has a first arc-shaped protrusion, the section a of the movable contact 54 has a first arc-shaped recess, the first arc-shaped protrusion is in contact connection with the first arc-shaped recess through an arc surface, and/or the contact of the second stationary contact 52 has a second arc-shaped protrusion, the section C of the movable contact 54 has a second arc-shaped recess, and the second arc-shaped protrusion is in contact connection with the second arc-shaped recess through an arc surface. The structure of mutually supporting between protruding and the sunken adoption like this sets up, further increases the area of contact of first quiet contact 51, second quiet contact 52 and movable contact 54, further reduces contact resistance, and protruding and sunken stable butt in addition strengthens self-holding relay's current-carrying capacity. As shown in fig. 7, at the moment the switch is closed or opened, the arc is directed to the edge of the contact surface due to the tip discharge effect, avoiding the main contact portion from being ablated by the arc. Further, the contact of the third stationary contact 53 has a third arc-shaped protrusion, the B section of the movable contact 54 has a third arc-shaped recess, and the third arc-shaped protrusion is rotatably connected with the third arc-shaped recess. The contact area between the contact and the recess is increased when the contact and the recess are firmly abutted through the mutual matching between the protrusion and the recess, and the contact and the recess are still kept stable when the third arc protrusion and the third arc recess rotate, so that the contact area is unchanged, the current carrying capacity of the relay is prevented from being influenced, and the contact part is ablated.

Further, as shown in fig. 1, 2 and 3, the axis of the reset coil 2 and the axis of the set coil 3 are arranged in line, the armature 4 is slidably connected to the bracket 1, the armature 4 is located between the reset coil 2 and the set coil 3, and the armature 4 slides in the axial direction of the electromagnetic coil.

In one embodiment of the present application, the armature 4 is located between the reset coil 2 and the set coil 3, and when the current is applied in the corresponding coil, the armature 4 can be located at a first position attracted to the reset coil 2 or a second position attracted to the set coil 3, so that the station switching of the self-holding relay is realized.

Specifically, a limit groove 11 is formed in the support 1, a limit rod 41 is arranged on the armature 4, and at least part of the limit rod 41 extends into the limit groove 11 and is in sliding connection with the limit groove 11. The setting drives the limiting rod 41 to slide through the armature 4, and the limiting rod 41 is connected with the switch spanner 56 through the limiting groove 11, so as to drive the switch spanner 56, the elastic piece 55 and the movable contact piece 54 to move.

As shown in fig. 5, the limiting rod 41 is provided with a bending section 411, a limiting space is formed between the bending section 411 and the armature 4, the bending section 411 extends out of the limiting groove 11 after passing through the limiting groove 11, and the bracket 1 is located in the limiting space. The limiting rod 41 realizes the limiting with the bracket 1 through the bending section 411, thereby ensuring that the armature 4 can stably slide on the bracket 1, the sliding of the limiting rod 41 drives the sliding of the connecting sleeve 42, the connecting sleeve 42 is connected with the switch spanner 56 through a connecting rod, and the function of driving the switch assembly 5 to switch through the relay is realized.

In an exemplary embodiment of the present application, as shown in fig. 1 to 8, the latching relay mainly comprises a casing 8 and a movement, where the casing 8 is used for supporting and coating the movement; the movement is a functional carrier of a relay and mainly comprises a circuit board 6, a bracket 1, an armature 4 and a switch assembly 5, wherein a driving circuit of a self-retaining relay is arranged on the circuit board 6.

As shown in fig. 4, the bracket 1 is made of soft magnetic material, is a bearing structure of the self-holding relay movement, and provides a magnetic path for the reset coil 2 and the set coil 3. The bracket 1 is mainly divided into a first supporting plate 12, a second supporting plate 13, a first ear plate 14 and a second ear plate 15, wherein the two first ear plates 14 are connected to the left side and the right side of the first supporting plate 12 at intervals, the reset coil 2 is installed on one first ear plate 14 through the iron core 7, and the set coil 3 is installed on the other second ear plate 15 through the iron core 7. A second support plate 13 is vertically connected to one side of the first support plate 12, the second support plate 13 being used to connect the switch assembly and the circuit board 6. Two second ear plates 15 are vertically connected to the second support plate 13, the second ear plates 15 being adapted to be connected to the housing. The drive terminal 61 and the switch assembly are connected to the circuit board, and the contact terminals 58 of the drive terminal 61 and the switch assembly protrude from the housing 8.

Further, the axis of the reset coil 2 and the axis of the set coil 3 are arranged in parallel, the armature 4 is rotatably connected to the bracket 1, the rotation axis of the armature 4 is arranged perpendicular to the axis of the electromagnetic coil, and the rotation axis of the armature 4 is located between the axis of the reset coil 2 and the axis of the set coil 3.

In another embodiment of the present application, as shown in fig. 9 to 13, the bracket 1 includes a first mounting plate 16, a second mounting plate 17, a third mounting plate 18 and an extension plate 19, where the second mounting plate 17 and the third mounting plate 18 are parallel and oppositely disposed, the second mounting plate 17, the third mounting plate 18 and the first mounting plate 16 are vertically disposed, the armature 4 is rotationally connected between the second mounting plate 17 and the third mounting plate 18, the extension plate 19 is disposed on the third mounting plate 18, the extension plate 19 is disposed far from the second mounting plate 17, the extension plate 19 is parallel to the first mounting plate 16, and a avoidance hole is disposed on the extension plate 19. The left and right ends of the armature 4 are respectively provided with a U-shaped frame 43 and a connecting sleeve 42, and the two U-shaped frames are used for buckling and sucking with the electromagnetic coil.

As shown in fig. 11 and 12, the switch assembly 5 further includes a base 57, and the base 57 includes a first connection plate 571 and two second connection plates 572, where the two second connection plates 572 are disposed in parallel and spaced apart, and the two second connection plates are vertically connected to the first connection plate 571. The switch wrench 56 is rotatably connected between the two second connection plates, and the three stationary contacts are connected to the first connection plate.

As shown in fig. 13, the switch assembly 5 is connected to the base 57 of the bracket 1, the extension plate 19 is connected to one of the second connection plates 572, the switch wrench 56 extends from the relief hole of the extension plate, and the connection sleeve 42 is sleeved on the switch wrench 56.

As shown in fig. 8, the driving terminal 61 on the circuit board 6 is used for connecting a power supply and a driving signal, when the driving signal is at a high level, the built-in driving circuit automatically injects a current pulse (the pulse width can be determined by R1, R2 and C1) into the setting coil 3, as shown in fig. 14, the setting coil 3 is electrified to attract the armature 4, and the armature 4 pulls the switch wrench 56 until the movable contact 54 is abutted against the second stationary contact 52; when the driving signal disappears, the built-in driving circuit injects a current pulse (the pulse width can be determined by R3, R4 and C2) into the reset coil 2, the reset coil 2 is electrified to attract the armature 4, and the armature 4 reversely pulls the switch spanner 56 until the movable contact piece 54 is abutted against the first static contact piece 51. The contact terminals 58 are used to control the operation object.

The present application also provides a preferred embodiment of a driving circuit for converting a driving signal of a conventional relay from the exterior of a self-sustaining relay, wherein the topology of the driving circuit is as shown in fig. 14, and the specific principle is as follows:

the driving signal is set by high level (H), reset by low level (L), Q5 is conducted when the driving signal is high level signal, the power supply charges capacitor C1 through resistors R1, R2 and Q5, and the charging current generates voltage V on R2 _G1 The grid electrode of the field effect transistor Q1 is biased in the forward direction, the Q1 is conducted to enable the setting coils a1 and a2 to be electrified to enable the second static contact F to be connected, and along with the progress of charging, charging current is smaller and smaller, and finally V is caused _G1 Cut off conduction when the conduction threshold value is smaller than Q1, and cut off the current flowing into the setting coil 3; when the driving signal disappears, Q5 is cut off, the power supply charges C2 through R3 and R4, and the charging current generates voltage V on R4 _G2 Q2 is positively biased to be conducted, the reset coils b1 and b2 are electrified to disconnect the second static contact piece F and connect the first static contact piece D, and as charging progresses, current casting is reduced, and finally V is caused _G2 The current of the reset coil 2 is turned on and off by Q2, wherein the current is smaller than the on threshold value of Q2; the MOS transistors Q3 and Q4 are used for discharging the charge on C1 during the period of low level of the driving signal to ensure that the driving signal becomesThe effect of Q5 also includes draining the charge on C2 during the high level of the drive signal to ensure that the drive signal goes low to form a conduction pulse (i.e., reset) for Q2.

From the above description, it can be seen that, since the self-holding relay adopts a bistable device, independent current pulses need to be applied to reset and set, unlike the driving manner of the conventional relay, the driving circuit embodiment of the present invention is integrated in the self-holding relay, converts the driving signal into the set pulse through the electronic circuit, and generates the reset pulse when the driving signal disappears, and can drive the self-holding relay to work by using the driving method of the conventional relay, so as to improve the usability of the self-holding relay.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition to the foregoing, references in the specification to "one embodiment," "another embodiment," "an embodiment," etc., mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described in general terms in the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is intended that such feature, structure, or characteristic be implemented within the scope of the invention.

In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.

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

Claims (10)

1. A self-sustaining relay, comprising:

the device comprises a bracket (1), wherein a circuit board (6) is arranged on the bracket (1);

the electromagnetic coil comprises a reset coil (2) and a set coil (3), the reset coil (2) and the set coil (3) are respectively connected with the bracket (1), and the reset coil (2) and the set coil (3) are respectively electrically connected with the circuit board (6);

-an armature (4), the armature (4) being movably connected to the support (1), at least part of the armature (4) being located between the reset coil (2) and the set coil (3), the armature (4) moving relative to the support (1) during energization of the electromagnetic coil such that the armature (4) has a first position in which it is attracted to the reset coil (2) and is disconnected from the set coil (3), and a second position in which it is attracted to the set coil (3) and is disconnected from the reset coil (2);

the switch assembly (5), switch assembly (5) include first quiet contact (51), second quiet contact (52), movable contact (54), elastic component (55) and switch spanner (56), the first end of switch spanner (56) with armature (4) are connected, the second end of switch spanner (56) with movable contact (54) are connected, elastic component (55) are connected between switch spanner (56) and movable contact (54), armature (4) are in when first position, movable contact (54) with first quiet contact (51) are connected, when reset coil (2) are switched from the circular telegram state to the outage state back, elastic component (55) provide make movable contact (54) with first quiet contact (51) are connected first holding power, armature (4) are in when the second position, movable contact (54) with second contact (52) are connected, when movable contact coil (3) are switched from the circular telegram state to the outage state, second coil (3) are in when the second elastic component (55) are in the second position, the elastic component (55) are kept in when the second position.

2. The latching relay according to claim 1, wherein the elastic member (55) is a spring plate, and the elastic member (55) is arcuately deformed in a direction opposite to a direction in which the switch wrench (56) moves during the movement of the switch wrench (56).

3. The latching relay according to claim 1, characterized in that the switching assembly (5) comprises:

the switch wrench (56) is rotationally connected with the base (57), and the first static contact piece (51) and the second static contact piece (52) are respectively connected with the base (57);

a third stationary contact (53), the third stationary contact (53) being connected to the base (57), the third stationary contact (53) being located between the first stationary contact (51) and the second stationary contact (52);

the movable contact piece (54) is provided with an A section, a B section and a C section which are sequentially connected, the A section is arranged opposite to the first static contact piece (51), the B section is arranged opposite to the third static contact piece (53), the C section is arranged opposite to the second static contact piece (52), the first end of the B section is connected with the switch spanner (56) through the elastic piece (55), and the second end of the B section is connected with the third static contact piece (53) in a rotating mode.

4. A latching relay according to claim 3, characterized in that the contact of the first stationary contact (51) is in surface contact with the a section of the moving contact (54) and the contact of the second stationary contact (52) is in surface contact with the B section of the moving contact (54).

5. The self-holding relay according to claim 3, characterized in that the contact of the first stationary contact (51) has a first arc-shaped bulge, the section a of the movable contact (54) has a first arc-shaped bulge, the first arc-shaped bulge and the first arc-shaped bulge are in contact connection through an arc surface, and/or the contact of the second stationary contact (52) has a second arc-shaped bulge, the section C of the movable contact (54) has a second arc-shaped bulge, and the second arc-shaped bulge are in contact connection through an arc surface.

6. The latching relay according to claim 3, characterized in that the contact of the third stationary contact (53) has a third arcuate projection, the B-section of the movable contact (54) has a third arcuate recess, and the third arcuate projection is rotationally connected to the third arcuate recess.

7. The self-sustaining relay according to claim 1, characterized in that the axis of the reset coil (2) and the axis of the set coil (3) are arranged collinearly, the armature (4) is slidably connected with the bracket (1), the armature (4) is located between the reset coil (2) and the set coil (3), and the armature (4) slides along the axis direction of the electromagnetic coil.

8. The self-holding relay according to claim 7, wherein the bracket (1) is provided with a limit groove (11), the armature (4) is provided with a limit rod (41), and at least part of the limit rod (41) extends into the limit groove (11) and is in sliding connection with the limit groove (11).

9. The self-holding relay according to claim 8, wherein the limit rod (41) is provided with a bending section (411), a limit space is formed between the bending section (411) and the armature (4), the bending section (411) extends out of the limit groove (11) after passing through the limit groove (11), and the bracket (1) is located in the limit space.

10. The latching relay according to claim 1, characterized in that the axis of the return coil (2) and the axis of the setting coil (3) are arranged in parallel, the armature (4) is rotationally connected to the support (1), the axis of rotation of the armature (4) is arranged perpendicular to the axis of the electromagnetic coil, and the axis of rotation of the armature (4) is located between the axis of the return coil (2) and the axis of the setting coil (3).