CN115621081A - Double-circuit power relay - Google Patents

Abstract

The invention discloses a double-path power relay, wherein an electromagnetic component is arranged in a base, and the double-path power relay also comprises an armature component, a movable switch component and two pairs of static contact connecting components; the armature component is contacted with the top of the electromagnetic component and is arranged around the joint of the armature component and the electromagnetic component in a vertically rotating manner; the movable switch components are arranged in the base in a sliding mode, and each pair of stationary contact connecting components are respectively positioned on two sides of each movable switch component and arranged oppositely; one end of the movable switch component is in transmission connection with one side of the armature component; when the electromagnetic assembly is electrified to generate electromagnetic attraction, the other side of the attraction armature assembly rotates downwards around the joint of the attraction armature assembly and the electromagnetic assembly, and the armature assembly drives the movable switch assembly to be in contact with each pair of static contact connecting assemblies, so that each pair of static contact connecting assemblies are in a conducting state. The double-path power relay provided by the invention has the advantages of high modularization degree of the internal structure, convenience in rapid assembly operation, small volume and compact structure after assembly.

Description

Double-circuit power relay

Technical Field

The invention relates to the technical field of relays, in particular to a double-path power relay.

Background

The relay is mainly applied to a control circuit, is an 'automatic switch' which uses small current to control large current operation, and plays the roles of automatic adjustment, safety protection, circuit switching and the like in the circuit, wherein one relay can be used for switching on and off of a double-circuit, namely the double-circuit relay.

Chinese patent publication No. CN210778409U discloses a two-way control type relay, in which when an electrical connector is not energized, a swing seat swings to one side under the pulling of an elastic member, so that a moving contact contacts with one of fixed contacts to realize the on-state of a circuit of the circuit, and when the electrical connector is energized, an iron core generates magnetism under the action of an electromagnetic coil and attracts the swing seat to swing to the other side, so that the moving contact contacts with the other fixed contact to realize the on-state of the circuit and the off-state of the circuit.

However, the two-way control type relay cannot control two circuits to be switched on or off simultaneously; in addition, the elastic piece of the type adopts a spring, the swing seat is pulled by the spring to realize on-off control, the structure is complex, the assembly procedures are multiple, and the assembly is inconvenient.

Disclosure of Invention

The invention provides a double-path power relay aiming at the defects in the prior art, and aims to solve the technical problems in the background art.

A double-circuit power relay comprises a base and an outer shell buckled on the base, wherein an electromagnetic component is arranged in the base, and the double-circuit power relay also comprises an armature component, a movable switch component and two pairs of static contact connecting components; wherein,

the armature component is contacted with the top of the electromagnetic component, and the armature component is arranged around the joint of the armature component and the electromagnetic component in a vertically rotating mode;

the movable switch assembly is arranged in the base in a sliding mode, and each pair of static contact connecting assemblies are respectively positioned on two sides of the movable switch assembly and arranged oppositely;

one end of the movable switch component is in transmission connection with one side of the armature component;

work as after the electromagnetism subassembly circular telegram produced the electromagnetism suction, attract the opposite side of armature subassembly around with the junction of electromagnetism subassembly rotates downwards, armature subassembly drive the movable switch subassembly with every to the stationary contact coupling assembling contact makes every all be in the on-state between every to the stationary contact coupling assembling.

Further, the electromagnetic assembly includes an iron core and a magnetically permeable member;

the iron core is fixedly arranged on the base through a fixing piece, an electromagnetic coil concentrically arranged with the iron core is wound on the fixing piece, a magnetic circuit input terminal is connected to the electromagnetic coil, and the magnetic circuit input terminal penetrates out of the bottom of the base;

the magnetic conduction piece is L-shaped and comprises a horizontal part and a vertical part; the horizontal part of the magnetic conduction piece is fixedly arranged on the base through a fixing piece, and the bottom end of the iron core is communicated with the horizontal part of the magnetic conduction piece; two ends of the top of the vertical part of the magnetic conduction piece are provided with convex parts extending upwards, the armature component is provided with a movable groove connected with the convex parts, and the convex parts are movably arranged in the movable groove in a penetrating way;

the base is provided with a mounting groove for mounting the vertical part of the magnetic conduction member, and the vertical part of the magnetic conduction member is mounted in the mounting groove.

Further, the armature component comprises a main body structure in an inverted L-shaped structure, a through hole is formed in the bending part of the main body structure, and an extension platform horizontally and outwards arranged in an extending mode is arranged in the middle of the outer side wall of the vertical part of the main body structure;

the movable grooves are arranged on two sides of the horizontal part of the main body structure, and the movable grooves are arranged close to the bending part of the main body structure;

the armature component is connected with the mounting groove through a clamp spring piece, the clamp spring piece is connected to the inner wall of the mounting groove, and the top of the clamp spring piece extends out of the through hole;

the bottom of the vertical part of the main body structure is in transmission connection with the movable switch assembly.

Furthermore, the clamp spring piece comprises a base plate, a first clamp arm, a second clamp arm and a third clamp arm, wherein the first clamp arm, the second clamp arm and the third clamp arm are positioned at the top of the base plate and extend, and the first clamp arm, the second clamp arm and the third clamp arm are integrally arranged with the base plate;

the top of the first clamping arm is pressed on the upper surface of the horizontal part of the main structure;

the top of the second clamping arm is pressed on the upper surface of the extension platform;

the top of the third clamping arm is pressed on an arc transition surface of the extension platform, which is close to the horizontal part of the main structure;

the substrate is arranged in a connecting groove on the inner side wall of the mounting groove, and the bottom of the third clamping arm clamps the groove wall on the inner wall of the connecting groove.

Further, the movable switch assembly comprises a sliding block and two moving plate assemblies arranged on the sliding block;

the movable piece assembly comprises a square movable spring piece, movable contacts arranged at two ends of the movable spring piece and a double-fork shaped pressure spring piece;

the sliding block is provided with a fixed groove for mounting the movable spring plate, the middle part of the movable spring plate is connected to the inner wall of one side of the fixed groove, and the pressure spring plate is mounted on the inner wall of the other side of the fixed groove so as to tightly press the movable spring plate on the inner wall of the fixed groove;

the middle parts of two sides of the movable reed are provided with limiting grooves, the top of the inner wall of one side of the fixed groove is provided with a limiting bulge, the limiting groove at the bottom of the fixed groove is clamped at the bottom of the fixed groove, and the limiting groove at the top of the movable reed is clamped on the limiting bulge;

the slider slides and sets up in the spout in the base, the one end of slider with the transmission of the vertical portion bottom of major structure is connected.

Furthermore, a connecting clamping groove is formed in the middle of the bottom of the vertical portion of the main body structure, a connecting portion corresponding to the connecting clamping groove is formed in one end of the sliding block, and the connecting clamping groove is movably clamped on the connecting portion.

Furthermore, a connecting column protruding outwards is arranged in the middle of the inner wall of one side of the fixing groove, the end face of the connecting column is an inclined plane, and the connecting column penetrates through the fixing part of the pressure elastic sheet;

and clamping pieces are arranged on two sides of the outer side wall of the fixed part of the pressure elastic sheet and clamped on two side walls of the sliding block.

Further, the static contact connecting assembly comprises a static spring and a static contact arranged at the top of the static spring;

the base is provided with an inserting groove for installing the static reed, the static reed is inserted into the inserting groove, the bottom end of the static reed is provided with a static contact, and the static contact penetrates through the base.

Furthermore, the clamping spring piece is made of SUS stainless steel.

Furthermore, the pressure spring plate is made of beryllium-copper alloy materials.

The invention has the following beneficial effects:

the two-way power relay provided by the invention can control two circuits to be switched on or switched off simultaneously. In addition, the double-path power relay provided by the invention has the advantages of high modularization degree of the internal structure, convenience in rapid assembly operation, small volume and compact structure after assembly.

The mounting pins of the invention have regular size and neat arrangement, the external dimension is only 48mm 26mm 30mm, the invention can be conveniently welded on various control circuit boards and control boxes of various protection devices, and the external dimension of the whole relay using the relay can be reduced.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural diagram of a two-way power relay according to an embodiment of the present invention;

fig. 2 is a schematic diagram of an internal structure of a two-way power relay according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an electromagnetic assembly according to an embodiment of the present invention;

FIG. 4 is a side view of an installed solenoid assembly, armature assembly, movable switch assembly, and stationary contact connection assembly provided by an embodiment of the present invention;

FIG. 5 is a first schematic structural diagram of a base according to an embodiment of the present invention;

fig. 6 is a second schematic structural diagram of a base according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of an armature assembly provided by an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a snap spring member according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a mounting position of a snap spring member on a base according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a movable switch assembly according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a rotor assembly according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a slider according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of a movable spring plate according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a pressure spring according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a stationary contact connection assembly according to an embodiment of the present invention.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

As shown in fig. 1 and fig. 2, the present invention provides a two-way power relay, which can simultaneously switch on and off the current load control of more than two ways 40A. The relay comprises a base 1 and an outer shell 2 buckled on the base 1, wherein an electromagnetic component 3 is arranged in the base 1, and the relay further comprises an armature component 4, a movable switch component 5 and two pairs of static contact connecting components 6. Wherein, armature subassembly 4 contacts with electromagnetic component 3 top, and armature subassembly 4 rotates the setting from top to bottom around the junction with electromagnetic component 3. The movable switch component 5 is arranged in the base 1 in a sliding mode, and each pair of stationary contact connecting components 6 are respectively arranged on two sides of the movable switch component 5 in an opposite mode. One end of the movable switch component 5 is in transmission connection with one side of the armature component 4. When the electromagnetic component 3 is electrified to generate electromagnetic attraction, the other side of the attraction armature component 4 rotates downwards around the joint with the electromagnetic component 3, and the armature component 4 drives the movable switch component 5 to be in contact with each pair of stationary contact connecting components 6, so that each pair of stationary contact connecting components 6 are in a conducting state. On the contrary, when the electromagnetic assembly 3 is powered off, the other side of the armature assembly 4 rotates upwards, and the armature assembly 4 drives the movable switch assembly 5 to be separated from each pair of stationary contact connecting assemblies 6, so that each pair of stationary contact connecting assemblies 6 are in a disconnected state.

Specifically, as shown in fig. 3 and 4, the electromagnetic assembly 3 includes an iron core 31 and a magnetic conductive member 32. Iron core 31 passes through mounting 33 fixed mounting on base 1, and the last solenoid that is equipped with iron core 31 concentric setting of winding of mounting 33 is connected with magnetic circuit input terminal 34 on the solenoid, and magnetic circuit input terminal 34 is worn out from base 1 bottom is vertical outwards. The magnetic circuit input terminal 34 is made of pure copper with the thickness of 1.2mm and the width of 3.0mm, and is galvanized according to the design of a product, so that direct welding is facilitated.

The iron core 31 is DT4E pure iron with strong magnetic conductivity, the electromagnetic coil is wound and riveted by a high-temperature resistant copper enameled wire through professional equipment, the assembly is firm and reliable, and the generated magnetic AT value can completely meet the requirements of various parameters of the relay.

The magnetic conductive member 32 is L-shaped, and includes a horizontal portion and a vertical portion. The horizontal part of the magnetic conduction member 32 is fixedly installed on the base 1 through a fixing member 33, and the bottom end of the iron core 31 is communicated with the horizontal part of the magnetic conduction member 32. Both ends of the top of the vertical part of the magnetic conducting member 32 are provided with protrusions 35 extending upwards, the armature assembly 4 is provided with a movable groove 45 connected with the protrusions 35, and the protrusions 35 movably penetrate through the movable groove 45. As shown in fig. 5 and 6, the base 1 has a mounting groove 11 for mounting the vertical portion of the magnetic conductive member 32, and the vertical portion of the magnetic conductive member 32 is clamped in the mounting groove 11.

Specifically, as shown in fig. 4 and 7, the armature assembly 4 includes a main body structure 41 in an inverted L-shaped structure, a through hole 42 is formed at a bent portion of the main body structure 41, and an extension platform 43 horizontally extending outwards is formed in a middle portion of an outer side wall of a vertical portion of the main body structure 41. The movable grooves 45 are disposed on two sides of the horizontal portion of the main body structure 41, and the movable grooves 45 are disposed near the bending portion of the main body structure 41.

The armature assembly 4 is connected with the mounting groove 11 through a clamp spring piece 44, the clamp spring piece 44 is connected on the inner wall of the mounting groove 11, and the top of the clamp spring piece 44 extends outwards from the through hole 42. The snap spring member 44 is processed from SUS stainless steel which is high precision and high elasticity. The snap spring member 44 tightly restrains the armature assembly 4 in the base 1, preventing the armature assembly 4 from falling out. The bottom of the vertical part of the main body structure 41 is in transmission connection with the movable switch assembly 5.

Specifically, as shown in fig. 8, the clamp spring member 44 includes a base plate 441, and a first clamp arm 442, a second clamp arm 443, and a third clamp arm 444 extending from the top of the base plate 441, wherein the first clamp arm 442, the second clamp arm 443, and the third clamp arm 444 are integrally disposed with the base plate 441. The top of the first latch arm 442 is pressed against the upper surface of the horizontal portion of the main structure 41. The top of the second latch arm 443 is pressed against the upper surface of the extension platform 43. The top of the third latch arm 444 is pressed against the curved transition surface of the extension platform 43 near the horizontal portion of the main structure 41.

As shown in fig. 9, the base plate 441 is installed in the connecting groove 12 on the inner side wall of the installation groove 11, and during installation, the bottom of the third clamping arm 444 clamps the groove wall on the inner wall of the connecting groove 12, so that the clamp spring 44 can be clamped on the base 1 after installation is completed, the first clamping arm 442 and the second clamping arm 443 form reverse buckles, the whole armature assembly 4 is buckled on the base 1, and the armature assembly 4 can be automatically returned after the electromagnetic assembly 3 is powered off.

Specifically, as shown in fig. 10, the movable switch assembly 5 includes a slider 51 and two moving plate assemblies 52 mounted on the slider 51. As shown in fig. 11, the moving plate assembly 52 includes a moving spring plate 521 having a square shape, a moving contact 522 disposed at both ends of the moving spring plate 521, and a pressure spring plate 523 having a double fork shape.

As shown in fig. 12, the slider 51 has a fixing groove 511 for mounting the movable spring 521 thereon, the middle portion of the movable spring 521 is connected to one inner wall of the fixing groove 511, and a pressing spring 523 is mounted on the other inner wall of the fixing groove 511 to press the movable spring 521 against the inner wall of the fixing groove 511.

As shown in fig. 13, the middle portions of both sides of the movable spring piece 521 are provided with a limiting groove 5211, the top of the inner wall of one side of the fixing groove 511 is provided with a limiting protrusion 5111, the limiting groove 5211 at the bottom of the movable spring piece 521 is clamped at the bottom of the fixing groove 511, and the limiting groove 5211 at the top of the movable spring piece 521 is clamped at the limiting protrusion 5111.

The sliding block 51 is slidably disposed in the sliding groove 13 in the base 1, and one end of the sliding block 51 is in transmission connection with the bottom of the vertical portion of the main body structure 41.

In this embodiment, the slider 51 is made of a high-temperature-resistant and flame-retardant material, and has the characteristics of flame retardance, high temperature resistance, deformation resistance and the like. The movable spring 521 is made of pure copper, and has good conductivity, fast heat dissipation and strong current carrying capability. The pressure spring plate 523 is made of beryllium copper alloy materials, so that the pressure spring plate has the performances of high elasticity, low hardness and mechanical aging resistance, the parameter stability of a product can be continuously ensured for a long time, and the requirement of electrical parameters is met. The movable contact 522 is made of silver alloy, and the high-performance silver alloy contact can meet the requirements on the service life and the overlarge current of the control relay.

Specifically, as shown in fig. 4, fig. 7 and fig. 12, a connecting slot 411 is disposed in the middle of the bottom of the vertical portion of the main body structure 41, a connecting portion 512 corresponding to the connecting slot 411 is disposed at one end of the slider 51, and the connecting slot 411 is movably clamped on the connecting portion 512.

As shown in fig. 12, the middle portion of the inner wall of one side of the fixing groove 511 is provided with a connecting column 513 protruding outwards, the end surface of the connecting column 513 is an inclined surface, and the connecting column 513 is arranged on the fixing portion of the pressure elastic sheet 523 in a penetrating manner, so that the pressure elastic sheet 523 is prevented from popping out when being severely vibrated or influenced by other external forces. As shown in fig. 14, clamping pieces 524 are arranged on two sides of the outer side wall of the fixing portion of the pressure spring piece 523, and the clamping pieces 524 are clamped on two side walls of the slider 51, so that the pressure spring piece 523 and the slider 51 are matched more firmly, pressure generated by the pressure spring piece 523 is stable and reliable, the relay is not affected when being vibrated and impacted by the outside, impact resistance of 10G to 55Hz dual-amplitude 1.5mm can be achieved, and stability of product performance is ensured.

In the present embodiment, as shown in fig. 15, stationary contact connecting assembly 6 includes stationary spring 61 and stationary contact 62 disposed on top of stationary spring 61. The static contact 62 is also made of silver alloy, and the high-performance silver alloy contact can meet the requirements on the service life and the overlarge current of the control relay. The base 1 is provided with an inserting groove 14 for installing the static spring leaf 61, the static spring leaf 61 is inserted into the inserting groove 14, the bottom end of the static spring leaf 61 is provided with a static contact 63, and the static contact 63 penetrates through the base 1. The static contact 63 is made of pure copper with the thickness of 1.2mm and the width of 3.0mm, and is galvanized according to the design of a product, so that direct welding is facilitated. The part of the static contact 63 led out of the base 1 is regular and straight, and the led-out end can be directly matched and welded with a PCB (printed Circuit Board) or externally connected with a common welding part according to the use environment and the condition. The distance between the two pairs of static contacts 63 is 15-16 mm, so that the error short circuit caused by other problems between the two paths can be effectively prevented.

The relay provided by the invention solves the problems of large volume, inconvenience in installation, unstable performance and the like of products with the same current load specification on the market. The mounting pins are regular in size and orderly arranged, the overall size of the whole machine can be reduced, the overall size of the invention is only 48mm 26mm 30mm, and the invention can be conveniently welded on various control circuit boards and in control boxes of various protection devices.

The relay provided by the invention has the advantages of low power consumption, large load current, capability of bearing two-way switching control of resistive load current 40A, 10 ten thousand electrical service life and 100 ten thousand mechanical aging service life, double-buckle fit of a finished product shell and a base, coating of cold-resistant and high-temperature-resistant epoxy resin adhesive, realization of a fully sealed state of the product, and capability of working in various external severe environments, such as high humidity and high dust environment. The external load leading-out structure is designed to be a direct-insert PCB circuit board type, two paths of symmetrical bidirectional 4-pin leading-out structures are led out, the input and the output of the load are finished in a most direct and economic mode, the cost is reduced, and raw materials are reduced.

The internal design of the invention is that the electromagnetic component 3 generates electromagnetic attraction AT after being electrified, the armature component 4 is attracted, the armature component 4 pushes the movable switch component 5 to move, and the reliable contact of two paths of 4 movable contacts 522 and 4 static contacts 62 on the static contact connecting component 6 is completed. The movable plate component 52 generates pressure by the distributed contact of the pressure elastic sheet 523 with the double-forked type 4 points, the design fully utilizes the material characteristics of high-precision alloy beryllium copper, the elastic deformation force generated by the material is large and stable, the support points of the two branches respectively correspond to the two movable contacts to form the parameter contact pressure required by the product, and the pressure can reach more than 90 g.

The pushing force and the breaking force of the armature component 4 on the movable switch component 5 are both large enough in the working process, the contact gap can reach more than 1.5mm of a single group when breaking, and the double contacts can reach more than 3.0mm, which can not be compared with the same or similar products in the market, and the withstand voltage value of the two contacts is more than 4000V, and the withstand voltage value of a magnetic circuit is more than 5000V, so that the safety and the reliability of the product in the work of a control circuit are ensured.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims (10)

1. The utility model provides a double-circuit power relay, is in including base (1) and lock shell body (2) on base (1), be provided with electromagnetic component (3) in base (1), its characterized in that: the device also comprises an armature component (4), a movable switch component (5) and two pairs of static contact connecting components (6); wherein,

the armature component (4) is in contact with the top of the electromagnetic component (3), and the armature component (4) is arranged around the joint of the armature component and the electromagnetic component (3) in a vertically rotating mode;

the movable switch assembly (5) is arranged in the base (1) in a sliding mode, and each pair of the static contact connecting assemblies (6) are respectively positioned on two sides of the movable switch assembly (5) and arranged oppositely;

one end of the movable switch component (5) is in transmission connection with one side of the armature component (4);

when electromagnetic component (3) circular telegram produces electromagnetic attraction after, attract the opposite side of armature subassembly (4) around with the junction of electromagnetic component (3) rotates downwards, armature subassembly (4) drive movable switch subassembly (5) with every pair static contact coupling assembling (6) contact makes every all be in the on-state between every pair static contact coupling assembling (6).

2. A two-way power relay according to claim 1, wherein: the electromagnetic assembly (3) comprises an iron core (31) and a magnetic conduction piece (32);

the iron core (31) is fixedly arranged on the base (1) through a fixing piece (33), an electromagnetic coil concentrically arranged with the iron core (31) is wound on the fixing piece (33), a magnetic circuit input terminal (34) is connected to the electromagnetic coil, and the magnetic circuit input terminal (34) penetrates out of the bottom of the base (1);

the magnetic conduction piece (32) is L-shaped and comprises a horizontal part and a vertical part; the horizontal part of the magnetic conduction piece (32) is fixedly arranged on the base (1) through a fixing piece (33), and the bottom end of the iron core (31) is communicated with the horizontal part of the magnetic conduction piece (32); the two ends of the top of the vertical part of the magnetic conducting piece (32) are provided with protrusions (35) extending upwards, the armature component (4) is provided with a movable groove (45) connected with the protrusions (35), and the protrusions (35) are movably arranged in the movable groove (45) in a penetrating mode;

the base (1) is provided with a mounting groove (11) for mounting the vertical part of the magnetic conduction piece (32), and the vertical part of the magnetic conduction piece (32) is mounted in the mounting groove (11).

3. A two-way power relay according to claim 2, wherein: the armature component (4) comprises a main body structure (41) with an inverted L-shaped structure, a through hole (42) is formed in the bent part of the main body structure (41), and an extension platform (43) horizontally and outwards arranged in an extending mode is arranged in the middle of the outer side wall of the vertical part of the main body structure (41);

the movable grooves (45) are arranged on two sides of the horizontal part of the main body structure (41), and the movable grooves (45) are arranged close to the bending part of the main body structure (41);

the armature assembly (4) is connected with the mounting groove (11) through a clamp spring piece (44), the clamp spring piece (44) is connected to the inner wall of the mounting groove (11), and the top of the clamp spring piece (44) extends outwards from the through hole (42);

the bottom of the vertical part of the main body structure (41) is in transmission connection with the movable switch assembly (5).

4. A two-way power relay according to claim 3, wherein: the clamp spring piece (44) comprises a base plate (441) and a first clamp arm (442), a second clamp arm (443) and a third clamp arm (444) which are positioned on the top of the base plate (441) in an extending mode, wherein the first clamp arm (442), the second clamp arm (443) and the third clamp arm (444) are integrally arranged with the base plate (441);

the top of the first clamp arm (442) is pressed on the upper surface of the horizontal part of the main body structure (41);

the top of the second clamp arm (443) is pressed on the upper surface of the extension platform (43);

the top of the third clamping arm (444) is pressed on an arc transition surface of the extension platform (43) close to the horizontal part of the main body structure (41);

the base plate (441) is installed in a connecting groove (12) on the inner side wall of the mounting groove (11), and the bottom of the third clamping arm (444) clamps the groove wall on the inner wall of the connecting groove (12).

5. A two-way power relay according to claim 3, wherein: the movable switch assembly (5) comprises a sliding block (51) and two moving plate assemblies (52) arranged on the sliding block (51);

the movable plate component (52) comprises a square movable spring plate (521), movable contacts (522) arranged at two ends of the movable spring plate (521) and a pressure spring plate (523) in a double-fork shape;

the sliding block (51) is provided with a fixing groove (511) for installing the movable spring piece (521), the middle part of the movable spring piece (521) is connected to the inner wall of one side of the fixing groove (511), and the pressure spring piece (523) is installed on the inner wall of the other side of the fixing groove (511) to press the movable spring piece (521) onto the inner wall of the fixing groove (511);

the middle parts of two sides of the movable reed (521) are provided with limiting grooves (5211), the top of the inner wall of one side of the fixed groove (511) is provided with a limiting protrusion (5111), the limiting groove (5211) at the bottom of the movable reed (521) is clamped at the bottom of the fixed groove (511), and the limiting groove (5211) at the top of the movable reed (521) is clamped on the limiting protrusion (5111);

the sliding block (51) is arranged in a sliding groove (13) in the base (1) in a sliding mode, and one end of the sliding block (51) is in transmission connection with the bottom of the vertical portion of the main body structure (41).

6. A two-way power relay according to claim 5, wherein: the middle of the bottom of the vertical portion of the main body structure (41) is provided with a connecting clamping groove (411), one end of the sliding block (51) is provided with a connecting portion (512) corresponding to the connecting clamping groove (411), and the connecting clamping groove (411) is movably clamped on the connecting portion (512).

7. A two-way power relay according to claim 5, wherein: a connecting column (513) protruding outwards is arranged in the middle of the inner wall of one side of the fixing groove (511), the end face of the connecting column (513) is an inclined plane, and the connecting column (513) penetrates through the fixing part of the pressure spring piece (523);

clamping pieces (524) are arranged on two sides of the outer side wall of the fixing portion of the pressure elastic piece (523), and the clamping pieces (524) are clamped on two side walls of the sliding block (51).

8. A two-way power relay according to claim 5, wherein: the static contact connecting component (6) comprises a static spring piece (61) and a static contact (62) arranged at the top of the static spring piece (61);

the base (1) is provided with an inserting groove (14) for installing the static reed (61), the static reed (61) is inserted into the inserting groove (14), the bottom end of the static reed (61) is provided with a static contact (63), and the static contact (63) penetrates through the base (1).

9. A two-way power relay according to claim 3, wherein: the clamp spring piece (44) is made of SUS stainless steel.

10. A two-way power relay according to claim 5, wherein: the pressure spring plate (523) is made of beryllium-copper alloy materials.

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