CN212032955U

CN212032955U - Driving mechanism applied to magnetic latching relay and magnetic latching relay

Info

Publication number: CN212032955U
Application number: CN202020430989.0U
Authority: CN
Inventors: 钟叔明; 郑增光; 李方能
Original assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Current assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2020-11-27
Anticipated expiration: 2030-03-30

Abstract

The utility model discloses a be applied to actuating mechanism of magnetic latching relay, including insulating pedestal, armature subassembly and promotion card that promotes the movable spring and remove, be equipped with the pin joint axle on the armature subassembly, the armature subassembly can rotationally pin joint on insulating pedestal through the pin joint axle, still be equipped with a drive shaft on the armature subassembly, the drive shaft is parallel with the pin joint axle, be equipped with a mating holes on the promotion card, the drive shaft inserts the mating holes on the promotion card along the axial of pin joint axle; when the armature component rotates, the outer surface of the driving shaft is matched with the inner surface of the matching hole to drive the pushing card to move back and forth. The utility model discloses an actuating mechanism assembly performance is good, can realize automatic assembly to improve assembly efficiency, reduction in production cost, and the action is also comparatively reliable. The utility model also provides a magnetic latching relay who uses above-mentioned actuating mechanism.

Description

Driving mechanism applied to magnetic latching relay and magnetic latching relay

Technical Field

The utility model belongs to the technical field of the magnetic latching relay manufacturing technology and specifically relates to a be applied to magnetic latching relay's actuating mechanism and magnetic latching relay.

Background

The magnetic latching relay is a novel relay developed in recent years and is also an automatic switch. As with other electromagnetic relays, it acts to automatically turn on and off the circuit. The magnetic latching relay has the advantages that the normally closed state or the normally open state of the magnetic latching relay completely depends on the action of permanent magnetic steel, and the switching state of the magnetic latching relay is triggered by pulse electric signals with certain width to complete the switching.

The conventional magnetic latching relay generally includes an insulating base, a plurality of conductive pins, a magnetic circuit system, a contact system, and a driving mechanism. The plurality of conductive leading-out pins, the magnetic circuit system, the contact system and the driving mechanism are all arranged on the insulating base body. The contact system comprises a movable spring and a static spring, a movable contact is arranged on the movable spring, a static contact is arranged on the static spring, the driving mechanism comprises an armature component and a pushing card, the armature component is connected with the pushing card, the pushing card is connected with the movable spring, and one end of a conductive leading-out pin, which is positioned in the insulating seat body, is fixedly connected with the movable spring or the static spring. The armature component drives the pushing card to move back and forth, the pushing card drives the moving spring to shift, so that the moving contact is jointed with or separated from the fixed contact, and the automatic connection and disconnection effects on the circuit are achieved.

23.5.2017, a utility model patent with patent number ZL201510211983.8, entitled "pushing mechanism of multi-path magnetic latching relay with simple installation and reliable limit", which comprises a pushing block, an armature part and at least two groups of moving spring parts; the armature part and the movable spring part are respectively clamped and matched with the pushing block; the pushing block is provided with a first clamping groove matched with the armature part and at least two second clamping grooves matched with the movable spring part; a first limiting part is arranged in a first clamping groove of the pushing block so as to prevent the pushing block from moving in the thickness direction in a two-way mode under the matching of the armature part; only one of the at least two second clamping grooves of the pushing block is provided with a second limiting part, the movable spring part is provided with a third clamping groove, and the second limiting part of the pushing block is matched with the third clamping groove of the movable spring part so as to prevent the pushing block from moving in the width direction in a two-way mode. The utility model discloses a to the institutional advancement who promotes piece and movable spring part to and utilize and promote mutually supporting between piece and the movable spring part, the armature part, it has realized stabilizing limit function. However, as can be seen from the detailed description and the drawings, the following problems still exist in the pushing mechanism: 1. as can be seen from fig. 5 and fig. 7 in the description, when the pushing arm 11 of the armature portion is to be installed in the first slot 31 of the pushing block 3, since the direction in which the armature portion is installed on the base is different from the direction in which the pushing arm 11 is installed in the first slot 31, and the first slot 31 is further provided with two first limiting portions 311, the armature portion needs to be manually tilted, the pushing arm 11 is installed on the first slot 31 of the pushing block 3 from the side surface of the pushing block 3, and then the armature portion can be installed on the base, so that the automatic operation cannot be realized, and the assembly efficiency is low. 2. As can be seen from fig. 3 and 7, the push-pull point of the push block 3 driven by the push arm 11 has a position difference with the push-pull point of the push block 3 and the movable spring 2, and is not on the same plane, so that a downward turning moment is generated in the movement process of the push block 3, the resistance of the push block 3 in the movement process is increased, and the armature part has a risk of an intermediate state, that is, a risk of the relay not acting. 3. As can be seen by combining the attached figure 7, the middle of the pushing arm 11 of the armature part is large, the upper part and the lower part are small, the contact surface of the pushing arm 11 of the armature part and the inner wall of the first clamping groove 31 of the pushing block 3 is small, the pushing block 3 easily rotates around the pushing arm 11 of the armature part, so that the motion resistance is easily generated, and the limit is also unreliable.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a be applied to actuating mechanism of magnetic latching relay, its assembly performance is good, can realize automatic assembly to improve assembly efficiency, reduction in production cost, and the action is also comparatively reliable.

In order to achieve the above purpose, the technical scheme of the utility model is that: a driving mechanism applied to a magnetic latching relay comprises an insulating base, an armature component and a pushing clamp for pushing a movable spring to move, wherein a pivoting shaft is arranged on the armature component, the armature component is rotatably pivoted on the insulating base through the pivoting shaft, a driving shaft is further arranged on the armature component, the driving shaft is parallel to the pivoting shaft, a matching hole is formed in the pushing clamp, and the driving shaft is inserted into the matching hole in the pushing clamp along the axial direction of the pivoting shaft; when the armature component rotates, the outer surface of the driving shaft is matched with the inner surface of the matching hole to drive the pushing card to move back and forth.

Preferably the armature subassembly includes square form support and two armatures, and two armature parallels set firmly on square form support, and the both ends of every armature are stretched out from the side of controlling of square form support respectively, the upper end of pin joint axle is stretched out from square form support up end, still is equipped with the permanent magnet in the middle of the square form support, the lower extreme of pin joint axle is stretched out from square form support lower extreme face, square block form support leading flank lower part outwards extends has the backup pad, the drive shaft links firmly in the backup pad.

Further improve, drive shaft upper portion both sides all outwards extend and have a enhancement arch, and every is strengthened protruding upside and all is linked firmly in the backup pad. Through two enhancement archs not only can strengthen like this the rigidity of drive shaft, two enhancement protruding downside can also form the shoulder, play with the mutual spacing effect of promotion card.

In a further refinement, an inner surface of the mating bore proximate an end of the armature assembly is flared, the flared inner surface of the mating bore being free of contact with the drive shaft. Through the outward-expanding part which is not contacted with the driving shaft, the driving shaft is conveniently inserted into the matching hole, the contact part of the driving shaft and the inner surface of the matching hole can be well controlled, and the push-pull point of the driving shaft and the push card can be well controlled, so that a better stress position is obtained, and the push reliability is improved.

In a further improvement, the cross section of the contact part of the matching hole and the driving shaft is approximately rectangular, the short side of the rectangular cross section is parallel to the moving direction of the pushing card, the long side of the rectangular cross section is perpendicular to the moving direction of the pushing card, and the cross section of the contact part of the driving shaft and the matching hole is circular.

Still further, the diameter ratio of the circular cross section is 0.1mm-0.2mm smaller than the distance between the two long edges of the rectangular cross section, and four corners of the rectangular cross section are arc-shaped. So as to facilitate the assembly and ensure the reliability of the driving shaft driving the push card to move back and forth, and reduce the vibration amplitude of the push card.

In a further improvement, the symmetry plane of the contact part of the driving shaft and the inner surface of the matching hole is on the same plane with the symmetry plane of the driving movable spring of the pushing card. Therefore, the pushing card can not generate downward rotating torque in the moving process, the moving resistance of the pushing card is effectively reduced, and the action reliability is improved.

Preferably, the push card is provided with at least two H-shaped movable spring clamping parts, and the matching hole is positioned between the two movable spring clamping parts; when the number of the H-shaped movable spring clamping parts on the pushing clamp is larger than two, after each H-shaped movable spring clamping part is clamped with the clamping end of one movable spring, only the two H-shaped movable spring clamping parts on the outermost side of the pushing clamp are matched with the movable springs to limit the pushing clamp. Therefore, when the pushing card is connected with a plurality of movable springs in a clamping mode, the situation that the pushing card is difficult to assemble in place due to multi-point limiting can be prevented, the assembling efficiency is improved, the stress influence is reduced, and the pushing card can move more stably in the moving direction.

Preferably, the fitting hole is a blind hole to ensure the strength of the push card.

The utility model discloses an actuating mechanism because be equipped with a drive shaft on the armature subassembly, on drive shaft and the armature subassembly the pin joint axle parallels, be equipped with a mating holes on the promotion card, the drive shaft is followed the axial of pin joint axle inserts mating holes on the promotion card passes through when the armature subassembly rotates the drive shaft surface with mating holes internal surface matches the drive it round trip movement to promote the card. Therefore, when the armature component is assembled, the armature component can be arranged into the insulating base and the pushing clamp along one direction, so that the armature component can be assembled through a machine conveniently, automatic operation is realized, the assembly efficiency is improved, and the production cost is reduced.

On the other hand, the outer surface of the driving shaft is matched with the inner surface of the matching hole to drive the pushing card to move, so that the contact area between the outer surface of the driving shaft and the inner surface of the matching hole is large, the pushing card is not easy to rotate with the driving shaft in the moving process, the movement resistance generated by the pushing card can be reduced, and the action is more reliable.

The utility model also provides a magnetic latching relay, including a plurality of movable springs, a plurality of quiet springs and a plurality of electrically conductive pin-outs, be equipped with the movable contact on every movable spring, every movable spring one end links firmly with the one end of an electrically conductive pin-out, be equipped with the stationary contact on every quiet spring, every quiet spring links firmly with the one end of an electrically conductive pin-out, it still includes foretell actuating mechanism, outside the insulating seat is stretched out to the other end of every electrically conductive pin-out, every movable spring's other end joint is pushing away the card, is equipped with the coil on the insulating seat, is equipped with the iron core in the middle of the coil, the coil both sides link firmly two yokes, armature, permanent magnet on iron core and the armature subassembly constitute the magnetic conduction return circuit, on the armature subassembly the drive shaft drive promotion card round trip movement makes every movable contact and a corresponding stationary contact joint or part.

In a further improvement, the number of the movable springs is three, the number of the static springs is three, the number of the conductive leading-out pins is six, the coil links firmly on the upper portion of insulating pedestal, and the upper portion of insulating pedestal is equipped with down the pin joint hole, link up the subassembly utilization the lower extreme of pin joint axle is inserted on the lower pin joint hole on insulating pedestal upper portion, and the upper portion of insulating pedestal still links firmly the briquetting of taking two connecting pins, and the upper portion of insulating pedestal is equipped with two connecting pin mounting holes, and every connecting pin is inserted on a connecting pin mounting hole, is equipped with the pin joint hole on the briquetting, go up the pin joint hole with the upper end of pin joint axle cooperatees, and the upper end of insulating pedestal has linked firmly the upper cover, and all move spring, quiet spring, electrically conductive pin-outs and promote the card and install in the lower part of insulating pedestal, and the lower extreme of insulating pedestal has linked firmly the lower cover, and the other end of all electrically conductive pin-outs all. Such arrangement structure can make whole magnetic latching relay's length direction and width direction size less and form three-phase structure, does benefit to and uses with three-phase smart electric meter cooperatees.

The improved structure is characterized in that a microswitch is further arranged on the upper portion of the insulating base body, a touch part extends upwards from the push card, and when the push card moves back and forth, the touch part presses or releases a microswitch touch reed. Therefore, the working state of the magnetic latching relay can be monitored conveniently by the output signal of the microswitch.

The magnetic latching relay of the utility model adopts the driving mechanism, the assembly performance is effectively improved, the automatic assembly is convenient to realize, and the manufacturing cost is reduced; and the moving resistance of the push card is small, and the reliability of the action of the magnetic latching relay is improved.

Drawings

FIG. 1 is a front view of the hidden insulating base of the driving mechanism of the present invention;

FIG. 2 is an enlarged sectional view A-A of FIG. 1;

fig. 3 is a perspective view of the armature assembly of the present invention;

fig. 4 is a perspective view of the push card of the present invention;

fig. 5 is a perspective view of a magnetic latching relay according to the present invention;

FIG. 6 is a top perspective view of the hidden upper cover of FIG. 5;

FIG. 7 is a perspective view of FIG. 6 with various parts hidden;

fig. 8 is a perspective view of the insulating base of the present invention;

FIG. 9 is a bottom view of the hidden lower cover of FIG. 5;

FIG. 10 is a top view of the hidden upper cover of FIG. 5;

FIG. 11 is an enlarged sectional view B-B of FIG. 10;

fig. 12 is an enlarged sectional view of C-C of fig. 10.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 to 4 show that a driving mechanism applied to a magnetic latching relay, includes an insulating base, an armature assembly 1 and a push clip 3 for pushing a movable spring 2 to move, a pivot shaft 11 is disposed on the armature assembly 1, the armature assembly 1 is rotatably pivoted on the insulating base through the pivot shaft 11, a driving shaft 12 is further disposed on the armature assembly 1, the driving shaft 12 is parallel to the pivot shaft 11, a mating hole 31 is disposed on the push clip 3, and the driving shaft 12 is inserted into the mating hole 31 of the push clip 3 along the axial direction of the pivot shaft 11; when the armature assembly 1 rotates, the pushing card 3 is driven to move back and forth by the matching of the outer surface of the driving shaft 12 and the inner surface of the matching hole 31.

Armature subassembly 1 includes square form support 13 and two armatures 14, and two armatures 14 parallel set firmly on square form support 13, and the both ends of every armature 14 are stretched out from the left and right sides of square form support 13 respectively, still is equipped with the permanent magnet in the middle of the square form support 13, the up end of pin joint axle 11 is stretched out from square form support 13 up end, the lower extreme of pin joint axle 11 is stretched out from square form support 13 lower terminal surface, and pin joint axle 11 forms an organic whole structure with square form support 13, square form support 13 leading flank lower part outwards extends has backup pad 121, drive shaft 12 links firmly on backup pad 121. The left and right sides of the square bracket 13 are each provided with two recesses 131 between the two armatures 14 to facilitate positioning of the permanent magnets when the two armatures 14 are mounted.

Both sides of the upper part of the driving shaft 12 are outwardly extended with a reinforcing protrusion 122, the upper side of each reinforcing protrusion 122 is fixedly connected to the supporting plate 121, and a plurality of reinforcing ribs 123 are arranged between the upper side of the supporting plate 121 and the front side of the square-shaped bracket 13. The push card 3 is provided with three H-shaped movable spring clamping parts 32, the matching hole 31 is a blind hole, and the matching hole 31 is positioned between two of the movable spring clamping parts 32 so as to ensure the strength of the push card. The push card 3 also extends upwards to form a touch part 33 matched with the contact reed of the micro switch.

After each H-shaped movable spring clamping portion 32 on the pushing clamp 3 is clamped with the clamping end of one movable spring 2, only two H-shaped movable spring clamping portions 32 on the outermost side of the pushing clamp 3 are matched with the movable springs 3 to limit the pushing clamp 3. The joint end of middle movable spring 3 does not participate in spacing after being connected with H-shaped movable spring joint portion 32 in the middle of pushing clamp 3 (see fig. 7, the joint end of middle movable spring 3 is connected with middle H-shaped movable spring joint portion 32 of pushing clamp 3, and then the joint end and the Z direction and the Y direction which are perpendicular to the moving direction of pushing clamp 3 all have gaps to do not participate in spacing), so that three points can be prevented from being simultaneously limited and difficult to assemble in place, the assembling efficiency is improved, the stress influence is reduced, and the pushing clamp 3 can move more stably in the moving direction.

As further shown in fig. 1 and 4, the inner surface of the fitting hole 31 near one end of the armature assembly 1 is flared, and the flared inner surface of the fitting hole 31 is not in contact with the drive shaft 12.

As shown in fig. 1, 2 and 4, the cross section of the contact portion of the engagement hole 31 and the driving shaft 12 is substantially rectangular, the short side 31a of the rectangular cross section is parallel to the moving direction of the push card 3, the long side 31b of the rectangular cross section is perpendicular to the moving direction of the push card 3, and the cross section of the contact portion of the driving shaft 12 and the engagement hole 31 is circular.

In order to facilitate assembly and ensure the reliability of the driving shaft 12 driving the push card 3 to move back and forth, and reduce the vibration amplitude of the push card, the diameter of the circular cross section is 0.1mm-0.2mm smaller than the distance between the two long sides 31b of the rectangular cross section, and four corners of the rectangular cross section are arc-shaped.

The symmetry plane of the contact part of the driving shaft 12 and the inner surface of the fitting hole 31 is on the same plane as the symmetry plane of the driving spring 2 of the pushing card 3. This plane of symmetry is the plane a-a shown in fig. 1, so that no torque is generated when the push card 3 is driven, and the moving resistance of the push card 3 is preferably reduced.

As shown in fig. 5 to 12, a magnetic latching relay includes the above-mentioned driving mechanism, three movable springs 2, three static springs 4 and six conductive pins 5, the above-mentioned driving mechanism includes an insulating base 10, an armature assembly 1 and a push clip 3 for pushing the movable springs 2 to move, each movable spring 2 is provided with two movable contacts 21, one end of each movable spring 2 is fixedly connected with one end of one conductive pin 5, each static spring 4 is provided with two static contacts 41, the static springs 4 and the static contacts 41 are of an integrated structure in this embodiment, each static spring 4 is fixedly connected with one end of one conductive pin 5, the other end of each conductive pin 5 extends out of the insulating base 10, the other end of each movable spring 2 is clamped on the push clip 3, a coil 6 is further installed on the insulating base 10, an iron core 61 is installed in the middle of the coil 6, two yokes 7 are fixedly connected to two sides of the coil 6, a yoke 7, an armature 14 on the iron core 61 and the armature assembly 1, an armature, The permanent magnets form a magnetic conductive loop, and the driving shaft 12 on the armature assembly 1 drives the pushing card 3 to move back and forth so that each movable contact 21 is engaged with or separated from a corresponding fixed contact 41.

The coil 6 is fixedly connected on the upper part of the insulating base 10, the upper part of the insulating base 10 is provided with a lower pin joint hole 101, the connecting component 1 is inserted into a lower pivot hole 101 on the upper part of the insulating base 10 by using the lower end of the pivot shaft 11, the upper part of the insulating base 10 can also be detachably and fixedly connected with a press block 8 with two connecting pins 81, the upper part of the insulating base 10 is provided with two connecting pin mounting holes 102, each connecting pin 81 is inserted into one connecting pin mounting hole 102, the press block 8 is provided with an upper pivot hole 82, the upper pivot hole 82 is matched with the upper end of the pivot shaft 11, the upper end of the insulating base 10 is fixedly connected with an upper cover 103, all the movable springs 2, the static springs 4, the conductive leading-out pins 5 and the pushing clamp 3 are installed on the lower part of the insulating base 10, the lower end of the insulating base 10 is fixedly connected with a lower cover 104, and the other ends of all the conductive leading-out pins 5 extend out of the insulating. The upper cover 103 and the lower cover 104 can be further fixedly connected to the insulating base 10 by screws.

The upper part of the insulation seat body 10 is also provided with a microswitch 9, when the push card 3 moves back and forth, the touch part 33 on the push card 3 presses the microswitch 9 to touch a reed or releases the microswitch 9 to touch the reed. The working state of the relay can be conveniently monitored by outputting signals through the microswitch 9.

The power supply lead 62 of the coil 6 and the lead wire 91 of the microswitch 9 are led out from the rear side of the insulating housing 10.

The magnetic latching relay of the embodiment can form a three-phase high-power magnetic latching relay, and can be conveniently matched with an intelligent electric meter for use.

The insulating base 10, the push card 3, the press block 8 and the square bracket 13 of the armature component 1 are all formed by injection molding.

The above is only a preferred embodiment of the present invention, and those skilled in the art will be able to make equivalent changes in the claims and fall within the scope of the present invention.

Claims

1. The utility model provides a be applied to actuating mechanism of magnetic latching relay, includes insulating pedestal, armature subassembly and the promotion card that promotes the movable spring and remove, is equipped with the pin joint axle on the armature subassembly, and the armature subassembly passes through the pin joint axle and rotationally the pin joint on insulating pedestal, its characterized in that: the armature component is also provided with a driving shaft, the driving shaft is parallel to the pivot shaft, the pushing card is provided with a matching hole, and the driving shaft is inserted into the matching hole on the pushing card along the axial direction of the pivot shaft; when the armature component rotates, the outer surface of the driving shaft is matched with the inner surface of the matching hole to drive the pushing card to move back and forth.

2. The drive mechanism applied to the magnetic latching relay according to claim 1, characterized in that: the armature subassembly includes square form support and two armatures, and two armature parallels set firmly on square form support, and the both ends of every armature are stretched out from the side of controlling of square form support respectively, the upper end of pin joint axle is stretched out from square form support up end, still is equipped with the permanent magnet in the middle of the square form support, the lower extreme of pin joint axle is stretched out from square form support lower extreme face, the outside extension in square block form support leading flank lower part has the backup pad, the drive shaft links firmly in the backup pad.

3. The drive mechanism applied to the magnetic latching relay according to claim 2, characterized in that: the both sides of drive shaft upper portion all outwards extend and have a enhancement arch, every enhancement arch upside all links firmly in the backup pad.

4. The drive mechanism applied to the magnetic latching relay according to claim 1, characterized in that: the inner surface of the mating bore near one end of the armature assembly is flared, and the flared inner surface of the mating bore is not in contact with the drive shaft.

5. The drive mechanism applied to the magnetic latching relay according to claim 1, characterized in that: the cross section of the contact part of the matching hole and the driving shaft is generally rectangular, the short side of the rectangular cross section is parallel to the moving direction of the pushing card, the long side of the rectangular cross section is perpendicular to the moving direction of the pushing card, and the cross section of the contact part of the driving shaft and the matching hole is circular.

6. The drive mechanism applied to the magnetic latching relay according to claim 5, wherein: the diameter ratio of the circular cross section is 0.1mm-0.2mm smaller than the distance between the two long edges of the rectangular cross section, and four corners of the rectangular cross section are arc-shaped.

7. The drive mechanism applied to the magnetic latching relay according to claim 1, characterized in that: the symmetry plane of the contact part of the driving shaft and the inner surface of the matching hole is on the same plane with the symmetry plane of the driving movable spring of the pushing card.

8. The drive mechanism applied to the magnetic latching relay according to claim 1, characterized in that: the pushing clamp is provided with at least two H-shaped movable spring clamping parts, and the matching hole is positioned between the two movable spring clamping parts;

when the number of the H-shaped movable spring clamping parts on the pushing clamp is larger than two, after each H-shaped movable spring clamping part is clamped with the clamping end of one movable spring, only the two H-shaped movable spring clamping parts on the outermost side of the pushing clamp are matched with the movable springs to limit the pushing clamp.

9. The utility model provides a magnetic latching relay, includes a plurality of movable springs, a plurality of quiet springs and a plurality of electrically conductive pin extractor, is equipped with the movable contact on every movable spring, and every movable spring one end links firmly with the one end of an electrically conductive pin extractor, is equipped with the stationary contact on every quiet spring, and every quiet spring links firmly its characterized in that with the one end of an electrically conductive pin extractor: the driving mechanism as claimed in any one of claims 1 to 8, further comprising a driving mechanism, wherein the other end of each conductive pin extends out of the insulating base, the other end of each movable spring is connected to a pushing clip, a coil is mounted on the insulating base, an iron core is mounted in the middle of the coil, two yokes are fixedly connected to two sides of the coil, the yokes, the iron core, the armature on the armature assembly and the permanent magnet form a magnetic conductive loop, and the driving shaft on the armature assembly drives the pushing clip to move back and forth to enable each movable contact to be connected with or separated from a corresponding stationary contact.

10. A magnetic latching relay according to claim 9, wherein: the movable spring has threely, quiet spring has threely, electrically conductive pin has six, the coil links firmly on the upper portion of insulating pedestal, and the upper portion of insulating pedestal is equipped with down the pin joint hole, the linking subassembly utilizes the lower extreme of pin joint axle is inserted on the lower pin joint hole on insulating pedestal upper portion, and the upper portion of insulating pedestal still links firmly the briquetting of taking two connecting pins, and the upper portion of insulating pedestal is equipped with two connecting pin mounting holes, and every connecting pin is inserted on a connecting pin mounting hole, is equipped with the pin joint hole on the briquetting, go up the pin joint hole with the upper end of pin joint axle cooperatees, and the upper end of insulating pedestal has linked firmly the upper cover, all movable spring, quiet spring, electrically conductive pin and promote the card and install in the lower part of insulating pedestal, and the lower extreme of insulating pedestal has linked firmly the lower cover, and the other end of all electrically conductive pin is drawn forth all stretches out the.

11. A magnetic latching relay according to claim 10, wherein: the upper part of the insulation seat body is also provided with a microswitch, the push card extends upwards to form a touch part, and when the push card moves back and forth, the touch part presses the microswitch touch reed or releases the microswitch touch reed.