CN220963164U

CN220963164U - Relay device

Info

Publication number: CN220963164U
Application number: CN202322502182.XU
Authority: CN
Inventors: 代文广; 傅大鹏; 吴意文; 苏礼季
Original assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Current assignee: Xiamen Hongfa Electric Power Controls Co Ltd
Priority date: 2023-09-14
Filing date: 2023-09-14
Publication date: 2024-05-14
Anticipated expiration: 2033-09-14

Abstract

The application discloses a relay which comprises a push rod assembly, a movable spring assembly and an elastic assembly. The movable spring assembly comprises a movable spring, the elastic assembly is connected with the movable spring assembly and the pushing rod assembly, and the elastic assembly is used for providing contact pressure for the movable spring; in the process of over-travel, the push rod assembly extrudes the elastic assembly, and the push rod assembly has an over-travel initial position, an over-travel end position and a transition position between the over-travel initial position and the over-travel end position relative to the position of the movable reed; the elastic component has a first stiffness coefficient in the process of moving the pushing rod component from the over-travel initial position to the transition position; the spring assembly has a second stiffness coefficient during movement of the push rod assembly from the transitional position to the over-travel end position, the first stiffness coefficient being less than the second stiffness coefficient.

Description

Relay device

Technical Field

The application relates to the technical field of electronic control devices, in particular to a relay.

Background

A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is generally used in an automatic control circuit. A relay is in fact an "automatic switch" that uses a smaller current to control a larger current. Therefore, the circuit plays roles of automatic adjustment, safety protection, circuit switching and the like.

The high-voltage direct-current relay is one of the relays, and the high-voltage direct-current relay in the prior art comprises a pair of stationary contact leading-out terminals, a moving assembly, a coil unit and a magnetic circuit part. The movable assembly comprises a movable reed, a push rod assembly and an elastic assembly, wherein the movable reed is arranged on the push rod assembly through the elastic assembly. The magnetic circuit part comprises a static iron core and a movable iron core, the static iron core is fixedly arranged in the relay, and the movable iron core is connected with the push rod assembly. When the coil unit is electrified, the static iron core can generate magnetic attraction and attract the movable iron core to move, so that the push rod assembly and the movable reed are driven to move together, and contact closure is realized.

In the prior art, in order to ensure good electrical connection between the movable contact and the stationary contact, a mode of increasing contact pressure is generally adopted, namely, the elastic force of the elastic component is improved. If the elastic force of the elastic member is increased, it is necessary to increase the power consumption of the coil unit, which is in contradiction with the current trend of pursuing small volume and low power consumption of the coil unit.

Disclosure of utility model

The embodiment of the application provides a relay, which can ensure enough contact pressure while reducing the power consumption of a coil by changing the stiffness coefficient of an elastic component, and solves the technical problems in the prior art.

The relay of the embodiment of the application comprises:

a push rod assembly;

The movable spring assembly comprises a movable spring;

The elastic component is connected with the movable spring component and the pushing rod component and is used for providing contact pressure for the movable spring;

Wherein, during the over-travel, the pushing rod assembly presses the elastic assembly, and the position relative to the movable reed is provided with an over-travel initial position, an over-travel end position and a transition position between the over-travel initial position and the over-travel end position;

Wherein the spring assembly has a first stiffness coefficient during movement of the push rod assembly from the over-travel initial position to the transition position; the spring assembly has a second stiffness coefficient during movement of the push rod assembly from the transition position to the over-travel end position, the first stiffness coefficient being less than the second stiffness coefficient.

According to some embodiments of the application, the elastic component is a leaf spring, and the leaf spring is connected to the moving spring component and the pushing rod component.

According to some embodiments of the application, the relay further comprises a pair of stationary contact terminals, and both ends of the movable reed in the first direction are used for contacting with or separating from the pair of stationary contact terminals, respectively; the first direction is the arrangement direction of the pair of stationary contact leading-out ends;

The leaf spring comprises a substrate and a spring arm, the substrate is connected with the push rod assembly, and at least one spring arm is respectively arranged at two ends of the substrate along the first direction; one end of each spring arm is connected with the substrate, and the other end of each spring arm is connected with the movable reed;

wherein the spring arm is not in contact with the push rod assembly until the push rod assembly is moved to the transition position; and when the push rod assembly moves to the transition position and in the process of moving from the transition position to the over-travel end position, the spring arm is abutted with the push rod assembly.

According to some embodiments of the application, a protruding part with a protruding direction facing away from the movable reed is further arranged between one end of each spring arm and the substrate;

Wherein the boss is not in contact with the push rod assembly until the push rod assembly is moved to the transition position; and when the push rod assembly moves to the transition position and in the process of moving from the transition position to the over-travel end position, the protruding part is abutted with the push rod assembly.

According to some embodiments of the application, the spring arm is bent from the protruding portion in a direction approaching the movable spring piece, and the spring arms located on both sides of the substrate in the first direction extend in a direction away from each other.

According to some embodiments of the application, an abutting part is arranged at the other end of the spring arm, and the abutting part abuts against the movable spring piece;

The abutting parts positioned at two sides of the substrate along the first direction are provided with a first interval; the protruding parts positioned on two sides of the substrate along the first direction are provided with second spacing, and the first spacing is larger than the second spacing.

According to some embodiments of the application, the protrusion is formed by bending the leaf spring.

According to some embodiments of the application, the relay comprises a plurality of the movable spring assemblies, each of the movable spring assemblies comprising one of the movable springs, the plurality of movable springs being arranged side by side along a third direction; the moving direction of the movable reed is defined as a second direction, and the first direction, the second direction and the third direction are perpendicular to each other;

The substrate is provided with a plurality of spring arms along the two sides of the first direction respectively, and the number of the spring arms at one side of the substrate corresponds to the number of the movable reeds.

According to some embodiments of the application, the relay further comprises:

The first magnetizer is arranged on one side of the movable reed, which is opposite to the elastic component.

According to some embodiments of the application, the movable spring assembly further comprises a second magnetizer fixedly connected to a side of the movable spring facing the elastic assembly, and the second magnetizer is used for forming a magnetic conduction loop with the first magnetizer.

According to some embodiments of the application, the push rod assembly comprises:

A stem portion;

The base is connected to one axial end of the rod part; the base is provided with a boss facing the movable reed; the elastic component is connected to the surface of one side of the boss, which is opposite to the base.

The elastic component is a leaf spring; the leaf spring comprises a substrate and spring arms, and at least one spring arm is respectively arranged at two ends of the substrate along the first direction; the substrate is provided with a limit hole, a convex column is convexly arranged on one side surface of the boss, which is opposite to the base, the convex column is inserted into the limit hole, and one side surface of the substrate, which is opposite to the movable reed, is abutted with one side surface of the boss, which is opposite to the movable reed; and one end of the spring arm, which is far away from the substrate, is connected with the movable reed.

the vertex of the protruding part is lower than the surface of one side of the boss, which faces the movable reed.

According to some embodiments of the application, a convex ring is arranged on a surface of the substrate, which faces the movable reed, and surrounds the limiting hole, and an inner ring surface of the convex ring is flush with a hole wall of the limiting hole.

According to some embodiments of the application, the convex ring is formed by folding the hole edge of the limit hole of the substrate towards the direction approaching to the movable reed.

According to some embodiments of the application, the convex ring is provided with a top surface facing away from the substrate, and a chamfer is provided at the junction of the top surface and the inner ring surface.

One embodiment of the above application has at least the following advantages or benefits:

According to the relay provided by the embodiment of the application, the stiffness coefficient of the elastic component from the over-travel initial position to the transition position is designed to be smaller, and the stiffness coefficient of the elastic component from the transition position to the over-travel end position is designed to be larger, so that the relation curve of the counter force and the magnetic gap is a folded line segment in the over-travel initial position to the over-travel end position, and further, when the power consumption of the coil is reduced, the situation that the suction force is smaller than the counter force is avoided, and the reliable closing of the relay is ensured. Meanwhile, the stiffness coefficient of the elastic component is larger in the process of the transition position to the over-travel end position, so that when the push rod component moves to the over-travel end position relative to the movable reed, the counter force is larger, and the contact pressure is further increased.

In addition, the stiffness coefficient of the elastic component can be increased under the condition of maintaining the power consumption of the coil unchanged, and the condition that the suction force is smaller than the force is not generated at the moment. Therefore, the relay provided by the embodiment of the application can increase the contact pressure under the condition of maintaining the power consumption of the coil unchanged.

Drawings

Fig. 1 is an exploded schematic view of a relay according to an exemplary embodiment.

Fig. 2 is a schematic structural view of a relay according to an exemplary embodiment, in which a case and an arc extinguishing unit are omitted.

Fig. 3 is a cross-sectional view taken along A-A in fig. 2.

Fig. 4 is a cross-sectional view taken along B-B in fig. 2.

Fig. 5 shows a graph of the relationship between attraction force and reaction force and magnetic gap.

Fig. 6 is a schematic structural view of a leaf spring according to an exemplary embodiment.

Fig. 7 is a schematic illustration of a moving assembly with the contact holder omitted, wherein the boss is not in contact with the base, according to an example embodiment.

Fig. 8 is a partial enlarged view at X1 in fig. 7.

Fig. 9 is a schematic illustration of a movable assembly with the contact holder omitted, wherein the boss is in contact with the base, according to an example embodiment.

Fig. 10 is a partial enlarged view at X2 in fig. 9.

FIG. 11 is a schematic diagram of a moving assembly, according to an example embodiment.

Fig. 12 is a cross-sectional view of fig. 11 taken along C-C.

Fig. 13 is a partial enlarged view at X3 in fig. 12.

Fig. 14 is an exploded view of the moving assembly and the second magnetizer according to the first exemplary embodiment.

Fig. 15 is an exploded view of the moving assembly and the second magnetizer according to the second exemplary embodiment.

Fig. 16 is an exploded view of the moving assembly and the second magnetizer according to the third exemplary embodiment.

Fig. 17 is a schematic view of a moving assembly according to a fourth exemplary embodiment with the contact holder omitted, wherein the boss is not in contact with the base.

Fig. 18 is a schematic view of a moving assembly according to a fifth exemplary embodiment with the contact holder omitted, wherein the boss is not in contact with the base.

Fig. 19 is a schematic view of a moving assembly according to a sixth exemplary embodiment with the contact holder omitted, wherein the boss is not in contact with the base.

Wherein reference numerals are as follows:

1. Relay device

10. Outer casing

11. First shell body

11A, exposed holes

12. Second shell

20. Coil unit

21. Coil rack

22. Coil

30. Arc extinguishing unit

31. Arc extinguishing magnet

32. Yoke iron clamp

40. Sealing unit

1000. Contact container

1001. Contact chamber

1002. First through hole

1100. Insulating cover

1110. Ceramic cover

1111. Third through hole

1120. Frame sheet

1200. Yoke iron plate

1210. Second through hole

2000. Stationary contact leading-out end

3000. Moving assembly

3100. Moving spring assembly

3110. Movable reed

3200. Push rod assembly

3210. Push rod

3211. Base seat

3212. Rod part

3213. Card and card

3214. Convex column

3215. Boss

3220. Contact support

3221. Top wall

3222. Side wall

3223. Clamping hole

3300. Elastic assembly

4000. Magnetic circuit part

4300. Static iron core

4310. Through hole

4400. Movable iron core

4500. Reset piece

5000. Metal cover

6100. First magnetizer

6200. Second magnetizer

100. Leaf spring

110. Substrate sheet

111. Limiting hole

112. Convex ring

112A, top surface

112B, inner annular surface

113. Chamfering tool

120. Spring arm

121. Abutment portion

130. Raised portion

131. Vertex point

300. Connecting piece

L1, first interval

L2, second interval

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.

In addition, the following drawings disclose embodiments of the invention, and for purposes of clarity, numerous practical details are set forth in the following description. However, it should be understood that these practical details are not intended to limit the invention.

Moreover, for the purpose of providing a clean and tidy drawing, some of the conventional structures and elements may be schematically shown in the drawings. In addition, some of the features shown in the drawings may be slightly enlarged or changed in scale or size to facilitate understanding and viewing of the technical features of the present invention, but are not intended to limit the present invention. The actual dimensions and specifications of the product manufactured according to the present disclosure should be adjusted according to the requirements of the production, the characteristics of the product itself, and the following disclosure, and are stated herein.

As shown in fig. 1 and 2, the relay 1 of the embodiment of the present application includes a case 10, a coil unit 20, an arc extinguishing unit 30, and a sealing unit 40. The sealing unit 40 is disposed in the housing 10, and the top of the stationary contact lead-out terminal of the sealing unit 40 is exposed to the outer surface of the housing 10 through the exposure hole 11a of the housing 10. The coil unit 20 and the arc extinguishing unit 30 are both disposed within the housing 10.

It will be understood that the terms "comprising," "including," and "having," and any variations thereof, are intended to cover non-exclusive inclusions in the embodiments of the application. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may alternatively include other steps or elements not listed or inherent to such process, method, article, or apparatus.

As an example, the case 10 includes a first case 11 and a second case 12, and the first case 11 and the second case 12 are connected to form a chamber for accommodating the coil unit 20, the arc extinguishing unit 30, and the sealing unit 40. In the embodiment of the application, the exposing hole 11a is disposed on the first housing 11.

The arc extinguishing unit 30 is used for extinguishing an arc generated between the stationary contact leading-out terminal and the movable reed of the sealing unit 40.

As an example, the arc extinguishing unit 30 includes two arc extinguishing magnets 31. The arc extinguishing magnets 31 may be permanent magnets, and each of the arc extinguishing magnets 31 may be substantially rectangular parallelepiped. The two arc extinguishing magnets 31 are respectively disposed at both sides of the sealing unit 40, and are disposed opposite to each other along the length direction of the movable reed.

By providing two opposing arc extinguishing magnets 31, a magnetic field can be formed around the stationary contact leading end and the movable reed. Therefore, the arc generated between the stationary contact leading-out end and the movable reed is elongated in a direction away from each other by the magnetic field, and arc extinction is realized.

The arc extinguishing unit 30 further includes two yoke clips 32, and the two yoke clips 32 are disposed corresponding to positions of the two arc extinguishing magnets 31. And, two yoke clips 32 surround the sealing unit 40 and the two arc extinguishing magnets 31. Through the design that yoke iron clamp 32 encircles arc extinguishing magnet 31, the magnetic field that can avoid arc extinguishing magnet 31 to produce outwards diffuses, influences the arc extinguishing effect. The yoke iron clip 32 is made of a soft magnetic material. Soft magnetic materials may include, but are not limited to, iron, cobalt, nickel, alloys thereof, and the like.

As shown in fig. 3 and 4, the sealing unit 40 includes a contact container 1000, a pair of stationary contact terminals 2000, a moving assembly 3000, and a magnetic circuit portion 4000.

The contact container 1000 is a stationary member for accommodating the contact set and is a device mainly composed of a housing and having a chamber. Further, the contact container 1000 may be formed by connecting a plurality of components in a predetermined assembly manner.

The contact vessel 1000 has a contact chamber 1001 inside. The contact container 1000 may include an insulation cover 1100 and a yoke plate 1200, the insulation cover 1100 being provided on one side surface of the yoke plate 1200, the insulation cover 1100 and the yoke plate 1200 enclosing a contact chamber 1001 together.

The insulating housing 1100 includes a ceramic housing 1110 and a frame piece 1120. The ceramic cover 1110 is connected to the yoke plate 1200 through a frame piece 1120. The frame 1120 may be a metal member having a ring-shaped structure, such as iron-nickel alloy, and one end of the frame 1120 is connected to the opening edge of the ceramic housing 1110, for example, by laser welding, brazing, resistance welding, gluing, etc. The other end of the frame piece 1120 is connected to the yoke plate 1200, and may be welded by laser, soldering, resistance welding, gluing, or the like. A frame 1120 is provided between the ceramic cover 1110 and the yoke plate 1200 to facilitate the connection of the ceramic cover 1110 and the yoke plate 1200.

The contact vessel 1000 also has a pair of first through holes 1002, the first through holes 1002 being in communication with the contact chamber 1001. The first through hole 1002 is configured to allow the stationary contact terminal 2000 to pass therethrough. In an embodiment of the present application, the first through hole 1002 is formed on the ceramic cover 1110.

A pair of stationary contact terminals 2000 are connected to the ceramic housing 1110 of the contact vessel 1000, with at least a portion of each stationary contact terminal 2000 being located within the contact chamber 1001. One of the pair of stationary contact terminals 2000 serves as a terminal through which current flows, and the other serves as a terminal through which current flows.

A pair of stationary contact terminals 2000 are inserted into a pair of first through holes 1002 in one-to-one correspondence and connected to the ceramic cover 1110, for example, by soldering.

The bottom of the stationary contact terminal 2000 serves as a stationary contact, and the stationary contact may be integrally or separately provided at the bottom of the stationary contact terminal 2000.

With continued reference to fig. 3 and 4, the moving assembly 3000 includes a plurality of moving spring assemblies 3100, push rod assemblies 3200 and elastic assemblies 3300 arranged side by side. The moving spring assembly 3100 is disposed in the insulating housing 1100 and is mounted on the push rod assembly 3200 through the elastic assembly 3300.

It is understood that the number of moving spring assemblies 3100 may be one or more. When the number of moving spring assemblies 3100 is plural, the plural moving spring assemblies 3100 are arranged side by side, and the number of contact points formed by the plural moving spring assemblies 3100 and each stationary contact lead-out end 2000 is plural, for example, two, three, four, or the like.

It should be noted that, if the pair of stationary contact terminals 2000 and the plurality of moving spring assemblies 3100 are regarded as one set of combinations, the relay according to the embodiment of the present application may include a plurality of sets of combinations.

Each movable spring assembly 3100 includes a movable spring 3110 and a plurality of movable springs 3110 arranged side-by-side. Both ends of each movable contact 3110 in the first direction D1 are respectively for contact with or separation from the pair of stationary contact terminals 2000. The first direction D1 is an arrangement direction of the pair of stationary contact terminals 2000.

Each movable spring 3110 may include a movable spring body and movable contacts provided at both ends of the movable spring body. The movable contact may be a separate part and connected to the movable spring body. Of course, the movable contact may be integrally formed on the movable spring body.

In an embodiment of the present application, the movable assembly 3000 includes two movable springs 3110 arranged side by side. One end of the two movable springs 3110 is for contact with or separation from the stationary contact of one of the stationary contact lead-out terminals 2000, and the other end of the two movable springs 3110 is for contact with or separation from the stationary contact of the other stationary contact lead-out terminal 2000. Further, one end of the two movable reeds 3110 forms two contact points with one of the stationary contact outgoing terminals 2000, and the other end of the two movable reeds 3110 forms two contact points with the other stationary contact outgoing terminal 2000.

In other embodiments, the number of movable springs 3110 may be one, three, four, five, etc.

It can be appreciated that the movable assembly 3000 includes a plurality of movable reeds 3110, and two ends of the movable reeds 3110 in the first direction D1 are respectively contacted to or separated from the pair of stationary contact terminals, so that the plurality of movable reeds 3110 are respectively contacted to the pair of stationary contact terminals 2000 in the first direction D1 to form a reliable parallel circuit, because the plurality of movable reeds 3110 are not limited to each other. The number of contact points formed by the movable contact 3110 and one stationary contact terminal 2000 is equal to or greater than two, so that the current-dividing effect is achieved. In addition, according to the principle that the size of the electric repulsive force is in direct proportion to the square of the current, the size of the electric repulsive force of each contact is obviously reduced, the improvement of short circuit resistance is facilitated, and the reliability of the relay is improved.

Each movable spring assembly 3100 further includes a second conductive body 6200, and the second conductive body 6200 is fixedly connected to a side of the movable spring 3110 facing away from the stationary contact lead-out end 2000. The function of the second magnetic conductor 6200 will be described in detail below.

As shown in fig. 3 and 4, the movement direction of the movable spring 3110 is defined as a second direction D2, and a direction perpendicular to the first direction D1 and the second direction D2 is defined as a third direction D3. The push rod assembly 3200 includes a push rod 3210 and a contact support 3220. The contact support 3220 includes a top wall 3221 and two side walls 3222, wherein one ends of the two side walls 3222 are respectively integrally connected to two side edges of the top wall 3221 along the third direction D3, and the other ends of the two side walls 3222 are connected to the pushing rod 3210, that is, the contact support 3220 forms an inverted U-shaped structure. A plurality of movable springs 3110 are mounted within a space enclosed by the contact holder 3220 through elastic members 3300.

The bottom end of each side wall 3222 of the contact holder 3220 is provided with a clamping hole 3223. The push rod 3210 includes a base 3211 and a rod portion 3212, and the base 3211 is connected to one axial end of the rod portion 3212. Two sides of the base 3211 are provided with a card 3213, and the two cards 3213 are respectively clamped into two card holes 3223 of the contact support 3220, so that the base 3211 is fixed with the contact support 3220. The elastic member 3300 is disposed between the plurality of movable springs 3110 and the base 3211 for applying an elastic force to the plurality of movable springs 3110 toward the top wall 3221 to provide a contact pressure.

In other embodiments, the contact support 3220 may have other structures, which are not listed here.

It is appreciated that the spring assembly 3300 can be used to flexibly support a plurality of movable springs 3110 to provide contact pressure.

Of course, in other embodiments, the push rod assembly 3200 may take other configurations, which will not be described herein.

Wherein a plurality of movable reeds 3110 are arranged side by side in the third direction D3.

With continued reference to fig. 3 and 4, the yoke plate 1200 has a second through hole 1210, the second through hole 1210 penetrates through two opposite sides of the yoke plate 1200 in a thickness direction of the yoke plate 1200, and the second through hole 1210 communicates with the contact chamber 1001 of the contact container 1000. The rod portion 3212 is axially movably disposed through the second through hole 1210. A base 3211 at one axial end of the stem 3212 is provided within the contact chamber 1001.

The sealing unit 40 further includes a metal cap 5000, the metal cap 5000 is connected to a side of the yoke plate 1200 facing away from the insulation cap 1100, and the metal cap 5000 is provided to cover the second through hole 1210 of the yoke plate 1200. The metal cover 5000 encloses a cavity with the yoke plate 1200 for accommodating the stationary core 4300 and the movable core 4400 of the magnetic circuit portion 4000.

Referring back to fig. 1, the coil unit 20 includes a bobbin 21 and a coil 22, and the bobbin 21 has a hollow cylindrical shape and is formed of an insulating material. The metal cover 5000 is inserted into the coil housing 21. The coil 22 surrounds the bobbin 21.

As shown in fig. 3 and 4, the magnetic circuit portion 4000 includes a stationary core 4300, a movable core 4400, and a reset member 4500. The stationary core 4300 is fixedly disposed within the metal cover 5000, and a portion of the stationary core 4300 extends into the second through-hole 1210. The stationary core 4300 has a through hole 4310, and the through hole 4310 is disposed corresponding to the second through hole 1210 for the rod portion 3212 to penetrate therethrough. The movable iron core 4400 is movably disposed in the metal cap 5000 and is disposed opposite the stationary iron core 4300 in an axial direction of the rod portion 3212, and the movable iron core 4400 connects the rod portion 3212 for being attracted by the stationary iron core 4300 when the coil 22 is energized. The plunger 4400 and the rod portion 3212 may be bolted, riveted, welded, or otherwise connected.

The reset member 4500 is located inside the metal cap 5000 and is disposed between the stationary core 4300 and the movable core 4400 for resetting the movable core 4400 when the coil 22 is powered off. The reset element 4500 may be a spring and is sleeved outside the stem portion 3212.

When the coil 22 is energized, the stationary core 4300 attracts the plunger 4400 to move upward, and the plunger 4400 can drive the push rod assembly 3200 to move upward through the rod portion 3212. When the movable spring 3110 contacts the stationary contact terminal 2000, the movable spring 3110 is stopped by the stationary contact terminal 2000, and the rod portion 3212 and the base 3211 still continue to move upward until the over-stroke is completed.

During the over-travel, the base 3211 presses the elastic component 3300, and the elastic component 3300 can provide elastic force to the movable spring 3110 to provide contact pressure after being pressed.

With continued reference to fig. 3 and 4, the relay 1 further includes a first magnetizer 610, where the first magnetizer 610 is configured to form a suction force on the movable reed 3110 in a contact closing direction, and the suction force can resist an electric repulsive force generated by the movable reed 3110 and the stationary contact outlet 2000 due to a short-circuit current, so as to prevent the movable reed 3110 and the stationary contact outlet 2000 from bouncing off.

In one embodiment, the first conductive body 6100 is disposed on a side of the movable contact 3110 facing away from the elastic member 3300, in other words, the first conductive body 6100 is disposed on a side of the movable contact 3110 facing toward the stationary contact outlet 2000.

It will be appreciated that when the movable reed 3110 is energized, the first magnetic conductor 6100 is magnetized, thereby creating a suction force to the movable reed 3110 in the contact closing direction for short circuit resistance.

Further, the movable spring assembly 3100 may further include a second magnetic conductor 6200, where the second magnetic conductor 6200 is fixedly connected to a side of the movable spring 3110 facing the elastic assembly 3300, in other words, the second magnetic conductor 6200 is fixedly connected to a side of the movable spring 3110 facing away from the stationary contact outlet 2000. The second magnetic conductor 6200 is configured to form a magnetic conductive loop with the first magnetic conductor 6100.

The number of second magnetic conductors 6200 corresponds to the number of movable springs 3110. In the embodiment of the application, the number of the second magnetic conductors 6200 is two, but not limited thereto. The two second magnetic conductors 6200 are respectively and fixedly connected to one sides of the two movable reeds 3110, which are opposite to the stationary contact leading-out end 2000.

When both ends of the movable reed 3110 are respectively contacted with the pair of stationary contact terminals 2000, a current flows in the movable reed 3110, thereby forming a magnetic conductive loop around the movable reed 3110 between the first magnetic conductor 6100 and the second magnetic conductor 6200. When the short-circuit current passes through the movable reed 3110, a suction force is generated between the first magnetizer 6100 and the second magnetizer 6200 along the contact pressure direction, and the suction force can resist an electric repulsive force generated by the movable reed 3110 and the stationary contact leading-out end 2000 due to the short-circuit current, so as to avoid the movable reed 3110 and the stationary contact leading-out end 2000 from bouncing off.

It is understood that the first conductor 6100 and the second conductor 6200 may be in a straight or U-shape. The first magnetic conductor 6100 and the second magnetic conductor 6200 may be made of soft magnetic materials such as iron, cobalt, nickel, and alloys thereof.

As shown in fig. 3 and 4, the first magnetizer 6100 is provided in the contact vessel 1000 and is fixedly provided with respect to the contact vessel 1000. In this way, the suction force against the short circuit is transferred to the contact container 1000, and since the contact container 1000 is a stationary part, excessive coil holding force is not required, thereby reducing the power consumption of the coil of the relay 1 and the volume of the relay 1, and improving the short circuit resistance.

Further, the first magnetic conductor 6100 is connected to the ceramic cap 1110 of the insulating cap 1100 by the connection 300. The ceramic cover 1110 of the insulating cover 1100 is provided with a third through hole 1111; the connecting piece 300 is rod-shaped and penetrates through the third through hole 1111; one end of the connector 300 is connected to the insulating cover 1100, and the other end is connected to the first magnetic conductor 6100.

The manner in which the axial end of the connector 300 is coupled to the ceramic cap 1110 may have various embodiments, such as welding, riveting, screwing, bonding, etc. The other end of the connector 300 may be connected to the first conductive body 6100 by various methods, such as welding, riveting, screwing, bonding, clamping, etc.

It can be appreciated that when the connection mode between one end of the connector 300 and the ceramic cover 1110 is welding, by welding the connector 300 on the top wall of the ceramic cover 1110, the metalized layer can be processed only on the periphery of the third through hole 1111 on the outer wall surface of the top wall, and the metalized layer does not need to be processed on the inner wall surface of the top wall, so that the processing is convenient and the processing steps are simplified.

It is understood that one end of the connector 300 may be connected to the outer wall surface of the ceramic cap 1110, may be connected to the inner wall surface of the ceramic cap 1110, or may be connected to both the outer wall surface and the inner wall surface of the ceramic cap 1110.

As can be seen from this, the first magnetizer 6100 is connected to the ceramic cover 1110 by the connector 300, on one hand, the short-circuit-resistant suction force is transferred to the ceramic cover 1110, so that excessive coil holding force is not needed, thereby reducing the power consumption of the coil of the relay 1 and the volume of the relay 1, and improving the short-circuit-resistant capability; on the other hand, since the connector 300 is connected to the ceramic cap 1110, the space of the contact chamber is not excessively occupied, and the arc extinguishing space of the arc extinguishing assembly and the movable space of the push rod are ensured.

In addition, the first magnetizer 6100 is connected with the rod-shaped connector 300, so that a plurality of connection modes, such as riveting, laser welding, clamping, gluing, etc., can be adopted between the first magnetizer 6100 and the connector 300, thereby enriching the connection modes.

As an example, the connector 300 is a solid rod. In this way, the connecting piece 300 and the first magnetizer 6100 can be connected by riveting, so that the connection is more reliable. In addition, the solid rod has higher supporting strength and is less easy to deform.

Of course, the first magnetizer 6100 may be fixedly disposed in the contact vessel 1000: the first magnetic conductor 6100 is fixedly disposed within the contact vessel 1000 by a fixing bracket (not shown). Specifically, the fixing bracket is disposed in the contact container 1000 and is fixedly connected to the yoke plate 1200, and the first magnetizer 6100 is fixedly connected to the fixing bracket.

In addition, the first magnetizer 6100 may be fixedly connected to the inner side of the top wall 3221 of the contact support 3220 to form a follow-up anti-short circuit structure.

In yet another embodiment, the distance between the first conductor 6100 and the second conductor 6200 may be designed as a variable pitch. Specifically, the distance between the first magnetizer 6100 and the second magnetizer 6200 can be adjusted according to the magnitude of the current value, so as to change the magnitude of the magnetic attraction generated between the first magnetizer 6100 and the second magnetizer 6200, and meet the requirement of overload breaking while meeting the short circuit resistance.

Alternatively, for the first magnetic conductor 6100, it may include a plurality of stacked magnetic conductive sheets. It will be appreciated that by increasing the number of thinner magnetically permeable pieces, the overall thickness of the first conductor 6100 can be increased. On the one hand, the thickness of the magnetic conduction sheet is thinner, and the magnetic conduction sheet can be made of thin belt materials, so that the material cost is lower, and the operation is easy. On the other hand, the number of the magnetic conductive sheets can be flexibly adjusted according to the magnitude of the short-circuit current.

It will be appreciated that the process of switching the relay 1 from fully open to fully closed can be divided into two phases: the first stage is that the movable iron core 4400 drives the movable reed 3110 to move upwards through the push rod assembly 3200 until the movable reed 3110 just contacts the stationary contact terminal 2000. In the first stage, the suction force provided by the stationary core 4300 to the plunger 4400 is slowly increased and needs to be always greater than the sum of the elastic force provided by the return member 4500 and the gravity of the push rod assembly 3200, the plunger 4400 itself. The second stage is that after the movable spring 3110 contacts the stationary contact end 2000, the movable iron core 4400 does not stop moving, but the movable iron core 4400 continues to drive the push rod assembly 3200 to move upwards until the movable iron core 4400 contacts the stationary iron core 4300 (the second stage is an over-stroke process). In the second stage, the elastic assembly 3300 is pressed by the push rod assembly 3200, and can provide an elastic force. Therefore, the attraction force provided by the stationary core 4300 to the plunger 4400 needs to be greater than the sum of the elastic force provided by the return member 4500, the push rod assembly 3200, the weight of the plunger 4400 itself, and the elastic force provided by the elastic assembly 3300.

For ease of understanding, further description may be provided in connection with fig. 5. Fig. 5 is a graph showing the relationship between the attraction force and the reaction force and the magnetic gap. The curve 1 shows the relationship between the attraction force and the magnetic gap, and the curve 2 shows the relationship between the reaction force and the magnetic gap of the relay 1 of the related art.

As can be seen from fig. 5, in the whole process of switching the relay 1 from the fully opened state to the fully closed state, the attractive force becomes exponentially larger as the magnetic gap between the stator core 4300 and the movable core 4400 becomes smaller, and the change of the counter force can be divided into two stages, wherein before the movable reed 3110 is not in contact with the stationary contact leading-out terminal 2000, the counter force only includes the elastic force provided by the reset member 4500 and the self gravity of the push rod assembly 3200 and the movable core 4400. As the magnetic gap becomes smaller, the elastic force provided by the elastic member 3300 is added to the reaction force after the movable contact 3110 contacts the stationary contact terminal 2000, so that the curve 2 representing the reaction force has a turning point where the reaction force increases abruptly.

It can be further seen from fig. 5 that the attractive force is always greater than the counter force, regardless of the magnitude of the magnetic gap.

As described in the background art, if the contact pressure is to be increased, the power consumption and the volume of the coil need to be increased, which contradicts the current trend of low power consumption and small volume of the coil.

Further, as shown in fig. 5, wherein curve 3 in fig. 5 represents the relationship of attraction force with magnetic gap after the coil power consumption is reduced. If the contact pressure is kept unchanged, the power consumption of the coil is directly reduced (the power consumption of the coil is reduced, and the suction force is reduced), then at a certain moment in the whole process of closing the contact, the suction force is smaller than the counter force (i.e. the suction force is not matched with the counter force), so that the relay 1 cannot be closed.

It follows that in the prior art, contact pressure and coil power consumption are not compatible, which obviously affects the development of the relay 1.

Based on this, the embodiment of the present application provides a relay 1 whose stiffness coefficient of the elastic member 3300 is designed to be variable, while reducing the coil power consumption, without affecting the attraction-reaction force matching, and also capable of ensuring a sufficiently large contact pressure.

During the over-travel, the push rod assembly 3200 presses the elastic member 3300, and has an over-travel initial position, an over-travel end position, and a transition position between the over-travel initial position and the over-travel end position with respect to the position of the movable reed 3110.

Wherein, the elastic component 3300 has a first stiffness coefficient during the movement of the push rod component 3200 from the over-travel initial position to the transition position; the resilient assembly 3300 has a second stiffness coefficient during movement of the push rod assembly 3200 from the transitional position to the over-travel end position, the first stiffness coefficient being less than the second stiffness coefficient.

It should be noted that, the over-travel initial position refers to a position of the push rod assembly 3200 relative to the movable reed 3110 when the push rod assembly 3200 drives the movable reed 3110 to contact with the stationary contact outgoing end 2000; the over-travel end position refers to the position of the push rod assembly 3200 relative to the movable reed 3110 after the movable core 4400 contacts the stationary core 4300 (i.e., the magnetic gap is equal to zero).

In the embodiment of the present application, before the push rod assembly 3200 moves from the initial overtravel position to the transition position relative to the movable contact spring 3110, the elastic assembly 3300 has a first stiffness coefficient, and the elastic assembly 3300 has a second stiffness coefficient during the movement of the push rod assembly 3200 from the transition position to the end overtravel position relative to the movable contact spring 3110, and the first stiffness coefficient is smaller than the second stiffness coefficient, so that the curve of the reaction force versus the magnetic gap is a fold line (such as curve 4 in fig. 5) during the overtravel when the push rod assembly 3200 presses the elastic assembly 3300.

Note that, the first half of the curve 4 (i.e. the stage before the push rod assembly 3200 drives the movable reed 3110 to move and contacts the stationary contact terminal 2000) coincides with the first half of the curve 2, so in the following description of the curve 4, only the differences between the curve 4 and the curve 2 are described, and the overlapping portion with the curve 2 will not be repeated.

As shown in fig. 5, in the prior art, when the push rod assembly 3200 is located at the over-travel initial position, the push rod assembly corresponds to the point a of the curve 2; the push rod assembly 3200 is in the over-travel end position, corresponding to point B of curve 2.

In the embodiment of the present application, when the push rod assembly 3200 is located at the over-travel initial position, the point a 'corresponding to the curve 4 (the point a' coincides with the point a); when the push rod assembly 3200 is located at the over-travel end position, the push rod assembly corresponds to a point B 'of the curve 4, wherein the counterforce corresponding to the point B' is larger than the counterforce corresponding to the point B; when the push rod assembly 3200 is in the transition position, it corresponds to point C of curve 4.

It can be seen that the curve of the reaction force versus the magnetic gap in the prior art is a straight line segment of AB, while the curve of the reaction force versus the magnetic gap in the embodiment of the present application is a broken line segment of a 'CB'. The slope of the A 'C line segment is less than the slope of the AB line segment, which is less than the slope of the C B' line segment.

In the embodiment of the application, since the slope of the a 'C line segment is smaller than the slope of the AB line segment and the slope of the C B' line segment is larger than the slope of the AB line segment, the curve 3 does not intersect with the a 'CB', but the curve 3 is always positioned above the curve 4, so that the condition that the suction force is smaller than the counter force (i.e. the suction force is not matched with the counter force) does not occur in the whole process of closing the contact.

Therefore, in the relay 1 according to the embodiment of the application, the stiffness coefficient of the elastic component 3300 from the over-travel initial position to the transition position is designed to be smaller, and the stiffness coefficient of the elastic component 3300 from the transition position to the over-travel end position is designed to be larger, so that the relation curve of the counter force and the magnetic gap is a folded line segment in the over-travel initial position to the over-travel end position, and further, when the power consumption of the coil is reduced, the situation that the suction force is smaller than the counter force is avoided, and the reliable closing of the relay 1 is ensured. Meanwhile, since the stiffness coefficient of the elastic member 3300 is large during the transition position to the over-stroke end position, the reaction force is also large when the push rod member 3200 moves to the over-stroke end position with respect to the movable reed 3110, thereby increasing the contact pressure.

In addition, referring to fig. 5, if the power consumption of the coil is not changed, that is, the relationship curve between the attraction force and the magnetic gap is still curve 1, then the curve 4 can be moved upward, that is, the reaction force value is increased, on the premise of ensuring that the attraction force is greater than the reaction force. Therefore, in the relay 1 according to the embodiment of the present application, the reaction force and thus the contact pressure can be increased while maintaining the coil power consumption.

As shown in fig. 6 to 10, the elastic member 3300 is a leaf spring 100, and the leaf spring 100 is coupled to a movable contact 3110 and a push rod assembly 3200. The leaf spring 100 includes a base plate 110 and spring arms 120, the base plate 110 is connected to a base plate 3211 of the push rod assembly 3200, and both ends of the base plate 110 along a first direction D1 are respectively provided with at least one spring arm 120. One end of each spring arm 120 is connected to the base plate 110, and the other end is connected to the movable spring 3110. Wherein, before the push rod assembly 3200 moves to the transition position, the spring arm 120 is not in contact with the push rod assembly 3200; when the push rod assembly 3200 moves to the transition position and in the process of moving from the transition position to the over-travel end position, the spring arm 120 is abutted with the push rod assembly 3200.

It will be appreciated that when the spring arm 120 is not in contact with the push rod assembly 3200, the arm of the spring arm 120 is longer, and the stiffness coefficient is smaller; when the spring arm 120 abuts against the push rod assembly 3200, the arm of force of the spring arm 120 becomes smaller and the stiffness coefficient becomes larger.

As shown in fig. 6 to 10, in an embodiment, a protruding portion 130 with a protruding direction facing away from the movable reed 3110 is further provided between one end of each spring arm 120 and the substrate 110, and the other end of each spring arm 120 abuts against the movable reed 3110.

Wherein, before the push rod assembly 3200 is moved to the transition position, the boss 130 is not in contact with the push rod assembly 3200; when the push rod assembly 3200 moves to the transition position and in the process of moving from the transition position to the over-travel end position, the protruding part 130 is abutted with the push rod assembly 3200.

It will be appreciated that the boss 130 is not in contact with the push rod assembly 3200, and the arm of the spring arm 120 is longer, and the stiffness coefficient is smaller; when the protrusion 130 abuts against the push rod assembly 3200, the arm of force of the spring arm 120 becomes smaller, and the stiffness coefficient becomes larger.

The spring arms 120 are bent from the boss 130 in a direction approaching the movable spring 3110, and the spring arms 120 located on both sides of the substrate 110 in the first direction D1 extend in directions away from each other. The other end of the spring arm 120 is provided with an abutting part 121, and the abutting part 121 abuts against the movable spring 3110; the abutting portions 121 located on both sides of the substrate 110 in the first direction D1 have a first spacing L1 therebetween; the protrusions 130 located at both sides of the substrate 110 along the first direction D1 have a second spacing L2 therebetween, and the first spacing L1 is greater than the second spacing L2. The spring arms 120 on both sides of the substrate 110 are symmetrically disposed along the first direction D1, and the protrusions 130 on both sides of the substrate 110 are symmetrically disposed along the first direction D1.

Of course, in another embodiment, the stiffness coefficient of the spring arm 120 may be changed by: a protrusion 130 is not provided between one end of each spring arm 120 and the base 110, but a protrusion is provided at a side surface of the base 3211 facing the leaf spring 100. Wherein, before the push rod assembly 3200 moves to the transition position, the protruding part is not contacted with the leaf spring 100, and at the moment, the arm of force of the leaf spring 100 is longer, and the stiffness coefficient is smaller; when the push rod assembly 3200 moves to the transition position and in the process of moving from the transition position to the over-travel end position, the protruding part is abutted with the leaf spring 100, at this time, the arm of force of the leaf spring 100 becomes smaller, and the stiffness coefficient becomes larger.

As shown in fig. 11 and 12, the base 3211 is provided with a boss 3215 facing the movable reed 3110; the substrate 110 of the elastic assembly 3300 is connected to a surface of the boss 3215 facing away from the base 3211. The substrate 110 is provided with a limiting hole 111, a convex column 3214 is convexly arranged on one side surface of the boss 3215, which faces away from the base 3211, the convex column 3214 is inserted into the limiting hole 111, and one side surface of the substrate 110, which faces away from the movable reed 3110, is abutted with one side surface of the boss 3215, which faces towards the movable reed 3110.

The shape of the limiting aperture 111 may have a variety of embodiments. When the substrate 110 is provided with a limiting hole 111, the shape of the limiting hole 111 may be a non-circular shape such as a rectangle, an ellipse, or a triangle, so as to prevent the base 3211 and the substrate 110 from rotating relatively, thereby playing a role in preventing rotation. When the substrate 110 is provided with more than two (including two) limiting holes 111, the shape of the limiting holes 111 may be circular or non-circular.

As shown in fig. 6 and 13, a convex ring 112 is provided on a side surface of the substrate 110 facing the movable contact 3110, the convex ring 112 surrounds the limiting aperture 111, and an inner annular surface 112b of the convex ring 112 is flush with a wall of the limiting aperture 111. Further, the collar 112 is formed by folding the hole edge of the stopper hole 111 of the base plate 110 toward the movable contact 3110.

By providing the convex ring 112 at the edge of the limiting hole 111, the friction between the convex column 3214 and the substrate 110 can be reduced and the generation of scraping can be prevented when the substrate 110 and the base 3211 are assembled.

The convex ring 112 is provided with a top surface 112a facing away from the substrate 110, and a chamfer 113 is provided at the junction of the top surface 112a and the inner annular surface 112 b. By providing the chamfer 113 at the junction of the top surface 112a and the inner annular surface 112b, burrs generated during molding of the convex ring 112 can be eliminated, and further, generation of shavings between the convex posts 3214 and the inner annular surface 112b of the convex ring 112 can be prevented.

As shown in fig. 7 and 9, the apex 131 of the boss 130 is lower than the side surface of the boss 3215 toward the movable contact 3110. In other words, the distance between the apex 131 of the boss 130 and the side surface of the movable reed 3110 facing the base 3211 is greater than the distance between the two surfaces of the boss 3215 and the movable reed 3110 facing each other.

In the embodiment of the present application, as shown in fig. 7, before the push rod assembly 3200 moves from the over-stroke initial position to the transition position relative to the movable contact 3110, the protrusion 130 is not in contact with the base 3211 of the push rod assembly 3200, where the vertical distance from the acting line of the reaction force of the movable contact 3110 on the leaf spring 100 to the contact position of the substrate 110 and the boss 3215 is L3, and before the push rod assembly 3200 moves from the over-stroke initial position to the transition position, the movable contact 3110 acts on the arm L3 of the leaf spring 100.

As shown in fig. 9, when the protrusion 130 abuts against the base 3211 during the movement of the push rod assembly 3200 from the transition position to the over-travel end position relative to the movable reed 3110, and when the vertical distance from the line of action of the reaction force of the movable reed 3110 on the leaf spring 100 to the abutment position of the protrusion 130 against the base 3211 is L4, the moment arm of the movable reed 3110 acting on the leaf spring 100 during the movement of the push rod assembly 3200 from the transition position to the over-travel end position is L4. Wherein L4 is less than L3.

As mentioned above, the abutting portions 121 located at two sides of the substrate 110 along the first direction D1 have a first spacing L1 therebetween, and the protruding portions 130 located at two sides of the substrate 110 along the first direction D1 have a second spacing L2 therebetween. Then, L3 is equal to L1/2, and L4 is equal to (L1-L2)/2.

In one embodiment, the protrusion 130 is formed by bending the leaf spring 100, but not limited thereto.

As shown in fig. 14, a plurality of spring arms 120 are respectively disposed on two sides of the substrate 110 along the first direction D1, the number of the plurality of spring arms 120 on one side of the substrate 110 corresponds to the number of the plurality of movable springs 3110, and the other ends of the plurality of spring arms 120 respectively abut against one ends of the plurality of movable springs 3110.

In a specific embodiment, the number of movable springs 3110 and the number of second magnetic conductors 6200 are two, two spring arms 120 are respectively disposed on two sides of the substrate 110 along the first direction D1, and two spring arms 120 on one side of the substrate 110 are disposed side by side along the third direction D3.

Of course, in another embodiment, the number of leaf springs 100 is plural, and the number of leaf springs 100 corresponds to the number of movable springs 3110. Each of the base plates 110 of the leaf springs 100 is provided with a spring arm 120 on both sides thereof in the first direction D1, and one leaf spring 100 corresponds to one movable reed 3110.

As shown in fig. 15, the second embodiment is the same as the first embodiment and is not described in detail, and the difference is that:

The number of the movable reed 3110 and the number of the second magnetizer 6200 are one, and one reed arm 120 is provided on each side of the substrate 110 along the first direction D1.

As shown in fig. 16, the third embodiment is the same as the first embodiment, and the difference is that:

The movable reed 3110 and the second magnetizer 6200 are three in number, and three reed arms 120 are respectively disposed on both sides of the substrate 110 along the first direction D1.

As shown in fig. 17, the fourth embodiment is the same as the first embodiment and is not described in detail, and the difference is that:

The end of the spring arm 120 of the leaf spring 100 remote from the base plate 110 is connected to the movable reed 3110 by an anti-rotation structure. The anti-rotation structure serves to limit the relative rotation between the leaf spring 100 and the movable reed 3110 about the axis of the push rod assembly 3200.

In an embodiment, the anti-rotation structure may be a fit of the limiting hole and the limiting protrusion; in another embodiment, the anti-rotation structure may be a riveted structure, where an end of the spring arm 120 away from the substrate 110 is riveted with the movable spring 3110; in yet another embodiment, the anti-rotation structure may be a welded structure, and an end of the spring arm 120 remote from the substrate 110 is welded to the movable spring 3110.

Further, the leaf spring 100 of the fourth embodiment is also different in shape from the leaf spring 100 of the first embodiment. In this embodiment, the ends of the spring arms 120 on both sides of the substrate 110 along the first direction D1 are gathered toward the middle.

As shown in fig. 18, the fifth embodiment is the same as the fourth embodiment and is not described in detail, except that:

The leaf spring 100 of the fifth embodiment is not shaped the same as the leaf spring 100 of the fourth embodiment. In this embodiment, the bending path of the spring arm 120 is arc-shaped, and the spring arm 120 is connected to the second magnetizer 6200.

Wherein the first pitch L1 is not greater than the second pitch L2.

As shown in fig. 19, the sixth embodiment is the same as the fourth embodiment, and the difference is that:

The leaf spring 100 is mounted to the movable reed 3110, and the base 110 of the leaf spring 100 abuts against a side surface of the boss 3215 facing the movable reed 3110.

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

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

In the description of the application embodiments, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the application embodiments and simplifying the description, and do not indicate or imply that the devices or units to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the application embodiments.

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

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

Claims

1. A relay, comprising:

a push rod assembly;

The movable spring assembly comprises a movable spring;

2. The relay of claim 1, wherein the resilient assembly is a leaf spring coupled to the moving spring assembly and the push rod assembly.

3. The relay according to claim 2, further comprising a pair of stationary contact terminals, both ends of the movable reed in the first direction being for contact with or separation from the pair of stationary contact terminals, respectively; the first direction is the arrangement direction of the pair of stationary contact leading-out ends;

4. A relay according to claim 3, wherein a convex portion having a convex direction facing away from the movable reed is further provided between one end of each of the spring arms and the substrate;

5. The relay according to claim 4, wherein the spring arms are bent from the convex portion toward a direction approaching the movable reed, and the spring arms located on both sides of the substrate in the first direction extend in directions away from each other.

6. The relay according to claim 4, wherein an abutting portion is provided at the other end of the spring arm, the abutting portion abutting against the movable spring piece;

7. The relay of claim 4, wherein the boss is formed by bending the leaf spring.

8. A relay according to claim 3, wherein the relay comprises a plurality of said movable spring assemblies, each of said movable spring assemblies comprising one of said movable springs, a plurality of said movable springs being arranged side by side in a third direction; the moving direction of the movable reed is defined as a second direction, and the first direction, the second direction and the third direction are perpendicular to each other;

9. The relay of claim 1, wherein the relay further comprises:

10. The relay of claim 9, wherein the movable spring assembly further comprises a second magnetic conductor fixedly connected to a side of the movable spring facing the elastic assembly, the second magnetic conductor being configured to form a magnetic circuit with the first magnetic conductor.

11. The relay of claim 1, wherein the push rod assembly comprises:

A stem portion;

12. The relay according to claim 11, further comprising a pair of stationary contact terminals, both ends of the movable reed in the first direction being adapted to be respectively contacted with or separated from the pair of stationary contact terminals; the first direction is the arrangement direction of the pair of stationary contact leading-out ends;

13. The relay according to claim 12, wherein a convex portion having a convex direction facing away from the movable reed is further provided between one end of each of the spring arms and the substrate;

14. The relay according to claim 12, wherein a convex ring is provided on a side surface of the substrate facing the movable contact spring, the convex ring surrounds the limiting hole, and an inner ring surface of the convex ring is flush with a wall of the limiting hole.

15. The relay according to claim 14, wherein the collar is formed by folding a hole edge of the stopper hole of the base plate toward a direction approaching the movable reed.

16. The relay of claim 14, wherein the collar has a top surface facing away from the substrate, and wherein a chamfer is provided at a junction of the top surface and the inner annular surface.