CN214956654U

CN214956654U - Drop-resistant magnetic latching relay

Info

Publication number: CN214956654U
Application number: CN202121692871.6U
Authority: CN
Inventors: 汪卫华
Original assignee: Zhejiang Fanhua Electronic Co ltd
Current assignee: Zhejiang Fanhua Electronic Co ltd
Priority date: 2021-07-23
Filing date: 2021-07-23
Publication date: 2021-11-30
Anticipated expiration: 2031-07-23

Abstract

The utility model provides a resistant magnetic latching relay that falls, it has solved the difficult separation scheduling problem after the relay contact is closed, it includes the electromagnetic drive subassembly, be provided with movable spring armature contact subassembly on the electromagnetic drive subassembly and with the quiet spring contact subassembly relative of movable spring armature contact subassembly, be provided with reset assembly between movable spring armature contact subassembly and the electromagnetic drive subassembly, reset assembly has the setting and just has elastic cantilever beam in movable spring armature contact subassembly both sides, electromagnetic drive subassembly upper end is provided with the bellying with the cantilever beam one-to-one, movable spring armature contact subassembly compresses tightly in the bellying upper end with the laminating of closed back cantilever beam of electromagnetic drive subassembly. The utility model has the advantages of good structural stability, easy opening and closing of the contact and the like.

Description

Drop-resistant magnetic latching relay

Technical Field

The utility model belongs to the technical field of the relay, concretely relates to resistant magnetic latching relay that falls.

Background

The magnetic latching relay is an electronic control device, belongs to a polarized relay in the electromagnetic relay category, and plays the roles of automatic regulation, safety protection, circuit switching and the like in the circuit. The working principle of the magnetic circuit breaker is that a certain voltage is applied to two ends of a coil, a certain current flows in the coil, so that working magnetic flux is generated on a magnetic circuit, the working magnetic flux and the permanent magnetic flux generated by permanent magnetic steel are synthesized into electromagnetic attraction, and an armature iron is attracted to an iron core under the action of the synthesized force, so that a movable contact on a movable spring is driven to be attracted with a fixed contact on a fixed spring, and the conduction effect in the circuit is achieved. When the direction of the current is changed, the direction of the working magnetic flux is changed, the direction of the synthesized electromagnetic attraction is changed, and the armature can leave the iron core under the action of the synthesized force, so that the movable contact on the movable spring is driven to be disconnected with the static contact on the static spring, and the circuit is cut off. However, in the actual use process, when the relay falls and vibrates, the contacts are in a closed state and cannot be normally separated, so that the relay fails. In addition, the armature of the common relay is easy to separate in a dislocation mode, and the using stability of the relay is affected.

In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, the chinese patent document discloses an armature and yoke position limiting structure of a relay [201921218015.X ], which includes a yoke, a movable spring disposed on the yoke, and an armature disposed on the movable spring, wherein the movable spring includes a first plate and a second plate bent and extended from the first plate, the first plate is connected to the yoke, and the armature is connected to the second plate; the armature is provided with a first stop block and a second stop block which protrude out of the lower surface of the armature; the first stop block protrudes out of the yoke, and the movable spring is provided with a blocking part for blocking the first stop block; in the use process of the relay, the power unit of the relay drives the second sheet body of the movable spring to move through the armature, so that the second sheet body is connected with or disconnected from the terminal, in the moving process of the armature, the first stop block and the second stop block prevent the armature from being separated from the yoke iron along the front-back direction, and the stop part is matched with the first stop block to prevent the armature from being separated from the yoke iron along the up-down direction.

The technical scheme solves the problem that the armature of the relay is easy to separate in a staggered mode to a certain extent, but the technical scheme still has many defects, such as weak shock and vibration resistance falling capability, incapability of normally separating after the contact is closed and the like.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a reasonable in design, the stable magnetic latching relay that falls of contact closure back separation.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the utility model provides a resistant magnetic latching relay that falls, including the electromagnetic drive subassembly, be provided with movable spring armature contact subassembly and the quiet spring contact subassembly relative with movable spring armature contact subassembly on the electromagnetic drive subassembly, be provided with reset assembly between movable spring armature contact subassembly and the electromagnetic drive subassembly, reset assembly has the setting and just has elastic cantilever beam in movable spring armature contact subassembly both sides, electromagnetic drive subassembly upper end is provided with the bellying with the cantilever beam one-to-one, movable spring armature contact subassembly compresses tightly in the bellying upper end with the laminating of closed back cantilever beam of electromagnetic drive subassembly. The cantilever beam is tightly pressed with the protruding part after the movable spring armature contact component is closed, and elasticity is applied to the movable spring armature contact component during separation, so that normal separation of the movable spring armature contact component is guaranteed.

In the above-mentioned fall-resistant magnetic latching relay, the cantilever beam is arranged symmetrically with respect to the moving spring armature contact assembly, the protruding portion is L-shaped, the protruding portion has a supporting portion opposite to the lower portion of the cantilever beam and a limiting portion opposite to the side surface of the cantilever beam, and the height of the limiting portion is greater than that of the supporting portion. Besides being used for supporting the cantilever beam, the bulge also plays a limiting role in the movable spring armature contact assembly, and dislocation of the movable spring armature contact assembly due to vibration is avoided.

In the above drop-resistant magnetic latching relay, the electromagnetic driving assembly includes a driving base, an iron core is fixed on the driving base, an enameled wire is wound on the iron core, a coil lead-out pin connected with the enameled wire is installed on the driving base, and a magnetic conduction block and a yoke adjacent to the enameled wire are fixed above the driving base. The electromagnetic driving component provides electromagnetic driving force to ensure that the movable spring armature contact component and the static spring contact component are closed and conducted.

In foretell resistant magnetic latching relay that falls, drive pedestal includes base and roof, and iron core and enameled wire are fixed between base and roof, and open the base below has the bleeder vent with iron core and enameled wire intercommunication, and the bellying sets up in the roof top, and roof top both sides are provided with the joint seat that is used for the quiet spring contact subassembly of joint respectively. The drive pedestal plays a supporting role, and the air holes below ensure normal heat dissipation of the iron core and the enameled wire.

In the above drop-resistant magnetic latching relay, the movable spring armature contact component comprises a movable spring, the movable spring is provided with an upper spring piece arranged above the electromagnetic drive component and a lower spring piece vertically arranged outside the yoke, the end part of the upper spring piece is fixed with an alloy contact opposite to the static spring contact component, an armature opposite to the yoke is fixed below the upper spring piece, clamping parts fixed with the yoke in a clamping manner are arranged on two sides of the lower spring piece, and the cantilever beam is arranged on two sides of the upper spring piece and integrally formed with the movable spring piece. The movable spring piece has elasticity and can provide the reset elasticity of the alloy contact after being closed.

In the above drop-resistant magnetic latching relay, the armature is in a convex shape, and two stop blocks clamped with the upper end of the yoke are respectively fixed at the front and the back of one end of the armature opposite to the yoke. The stop dog below the armature on one hand can play the effect of preventing armature drunkenness from the front and back, on the other hand also can play the effect of preventing armature skew from controlling.

In the above drop-resistant magnetic latching relay, the stationary spring contact assembly includes an upper stationary spring group and a lower stationary spring group, and the upper stationary spring group and the lower stationary spring group are respectively mounted on the snap-fit seats. The upper static spring group and the lower static spring group of the static spring contact assembly realize the normally open or normally closed of the circuit.

In the above drop-resistant magnetic latching relay, the upper stationary spring group includes an L-shaped upper stationary spring, an upper contact is fixed to the upper end of the upper stationary spring, and the upper contact is disposed above the alloy contact. The upper contact is normally in contact with the alloy contact.

In the above drop-resistant magnetic latching relay, the lower static spring group includes an L-shaped lower static spring, a lower contact is fixed to the upper end of the lower static spring, and the lower contact is disposed below the alloy contact. The lower contact is closed in the relay energized state and is in contact with the alloy contact.

In foretell fall-resistant magnetic latching relay, this relay dustcoat has the shell body of plastics material, and electromagnetic drive subassembly, movable spring armature contact subassembly, quiet spring contact subassembly and reset assembly set up in the shell body, and the shell body is sealed through the rubber coating. The outer shell has better waterproof sealing function.

Compared with the prior art, the utility model has the advantages of: the cantilever beam and the protruding part are equipped to ensure the contact separation and the reset stability of the relay; a stop block opposite to the yoke iron is arranged below the armature of the movable spring armature contact component, so that the vibration resistance stability of the relay is improved; according to actual need, the static spring contact assembly is connected, and the normally open or normally closed requirements of the circuit are met.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a structural sectional view of the present invention;

fig. 3 is an assembly schematic of the outer housing of the present invention;

fig. 4 is a schematic structural view of the driving seat of the present invention;

fig. 5 is a schematic structural view of a moving spring armature contact assembly according to the present invention;

fig. 6 is a schematic structural view of the armature of the present invention;

fig. 7 is a schematic structural diagram of the upper static spring set of the present invention;

fig. 8 is a schematic structural view of the lower static spring set of the present invention;

in the figure, the electromagnetic driving assembly 1, the driving base 11, the iron core 12, the enameled wire 13, the coil lead-out pin 14, the magnetic conduction block 15, the yoke 16, the base 17, the top plate 18, the clamping base 19, the movable spring armature contact assembly 2, the movable spring 21, the upper spring 22, the lower spring 23, the alloy contact 24, the armature 25, the clamping portion 26, the stopper 27, the static spring contact assembly 3, the upper static spring set 31, the lower static spring set 32, the upper static spring 33, the upper contact 34, the lower static spring 35, the lower contact 36, the reset assembly 4, the cantilever beam 41, the boss 42, the support portion 43, the limit portion 44 and the outer shell 5.

Detailed Description

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

As shown in fig. 1 to 8, a drop-resistant magnetic latching relay includes an electromagnetic driving component 1, a movable spring armature contact component 2 and a static spring contact component 3 opposite to the movable spring armature contact component 2 are disposed on the electromagnetic driving component 1, a reset component 4 is disposed between the movable spring armature contact component 2 and the electromagnetic driving component 1, the reset component 4 has cantilever beams 41 disposed at two sides of the movable spring armature contact component 2 and having elasticity, a protruding portion 42 corresponding to the cantilever beams 41 one to one is disposed at the upper end of the electromagnetic driving component 1, and the cantilever beams 41 are attached to and pressed against the upper end of the protruding portion 42 after the movable spring armature contact component 2 and the electromagnetic driving component 1 are closed. The movable spring armature contact component 2 is driven by the electromagnetic driving component 1 to be in contact with the static spring contact component 3 to achieve circuit conduction, wherein the cantilever beam 41 is pressed on the protruding portion 42, when the electromagnetic driving component 1 is powered off, the movable spring armature contact component 2 is separated from the static spring contact component 3, the protruding portion 42 applies reverse elastic force to the cantilever beam 41, and the movable spring armature contact component 2 is assisted to reset.

Specifically, the cantilever beam 41 is symmetrically arranged relative to the moving-spring armature contact assembly 2, the protruding portion 42 is L-shaped, the protruding portion 42 has a supporting portion 43 opposite to the lower side of the cantilever beam 41 and a limiting portion 44 opposite to the side surface of the cantilever beam 41, and the height of the limiting portion 44 is greater than that of the supporting portion 43. The protrusions 42 are symmetrically arranged and the limiting portions 44 are opposite to each other, so that the moving spring armature contact assembly 2 is limited and prevented from shaking.

In depth, the electromagnetic driving assembly 1 includes a driving base 11, an iron core 12 is fixed on the driving base 11, an enamel wire 13 is wound on the iron core 12, a coil lead-out pin 14 connected with the enamel wire 13 is installed on the driving base 11, and a magnetic conduction block 15 and a yoke 16 adjacent to the enamel wire 13 are fixed above the driving base 11. After the enameled wire 13 is conductive, the magnetic conducting block 15 and the iron core 12 generate magnetic attraction under the action of inductance, and the magnetic force is conducted to the yoke 16, so that the movable spring armature contact assembly 2 and the yoke 16 are closed in an adsorption manner.

Further, the driving seat body 11 comprises a base 17 and a top plate 18, the iron core 12 and the enameled wire 13 are fixed between the base 17 and the top plate 18, an air hole communicated with the iron core 12 and the enameled wire 13 is formed in the lower portion of the base 17, the protruding portion 42 is arranged above the top plate 18, and clamping seats 19 used for clamping the static spring contact assembly 3 are respectively arranged on two sides above the top plate 18. The iron core 12 is connected between the base 17 and the top plate 18, wherein the clamping seat 19 is used for clamping and fixing the upper static spring set 31 and the lower static spring set 32.

Furthermore, the movable spring armature contact assembly 2 comprises a movable spring 21, the movable spring 21 is provided with an upper spring 22 arranged above the electromagnetic driving assembly 1 and a lower spring 23 vertically arranged outside the yoke 16, an alloy contact 24 opposite to the static spring contact assembly 3 is fixed at the end part of the upper spring 22, an armature 25 opposite to the yoke 16 is fixed below the upper spring 22, clamping parts 26 clamped and fixed with the yoke 16 are arranged at two sides of the lower spring 23, and cantilever beams 41 are arranged at two sides of the upper spring 22 and are integrally formed with the movable spring 21. The movable spring 21 is formed by stamping a copper alloy having good conductivity and elasticity, and the cantilever beam 41 integrally formed therewith increases the reaction force of the movable spring 21 to facilitate the release of the armature 25, and increases the heat dissipation area of the movable spring 21 to facilitate the improvement of the heat dissipation performance.

In addition, the armature 25 is convex, and two stoppers 27 engaged with the upper end of the yoke 16 are respectively fixed to the front and the back of the end of the armature 25 opposite to the yoke 16. The stop block 27 prevents the armature 25 from moving due to the impact in the front and rear directions, so that the movable spring 21 is not easy to deform, the armature 25 is prevented from being skewed left and right, and the mechanical property of the movable spring 21 is not greatly changed.

Meanwhile, the stationary spring contact assembly 3 includes an upper stationary spring group 31 and a lower stationary spring group 32, and the upper stationary spring group 31 and the lower stationary spring group 32 are respectively installed on the chuck base 19. Go up quiet spring group 31 and quiet spring group 32 down and do not take place the contact, carry out the wiring according to actual need, go up quiet spring group 31 wiring and realize that the circuit is normally open, quiet spring group 32 wiring realizes that the circuit is normally closed down.

As can be seen, upper stationary spring set 31 includes an L-shaped upper stationary spring 33, an upper contact 34 is fixed to the upper end of upper stationary spring 33, and upper contact 34 is disposed above alloy contact 24. Upper contact 34 of upper stationary spring 33 and lower contact 36 of lower contact 36 are made of silver alloy to obtain good conductivity.

It is apparent that lower stationary spring group 32 includes L-shaped lower stationary spring 35, lower contact 36 is fixed to the upper end of lower stationary spring 35, and lower contact 36 is disposed below alloy contact 24. The lower contact 36 and the upper contact 34 are fixedly connected by riveting, and the pin portions of the upper static spring group 31 and the lower static spring group 32 are formed by folding two layers of materials.

Preferably, the relay is covered by an outer shell 5 made of plastic, the electromagnetic driving component 1, the moving spring armature contact component 2, the static spring contact component 3 and the reset component 4 are arranged in the outer shell 5, and the outer shell 5 is sealed by gluing. The lower end of the outer shell 5 is fixedly connected with a base 17 of the electromagnetic driving component 1, and if the air holes are not sealed by hot stamping, the product is a welding-resistant product; and if the air holes are sealed by hot pressing, the plastic packaging type product is obtained.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the electromagnetic driving assembly 1, the driving base 11, the iron core 12, the enameled wire 13, the coil lead-out pin 14, the magnetic conductive block 15, the yoke 16, the base 17, the top plate 18, the clamping base 19, the moving spring armature contact assembly 2, the moving spring 21, the upper spring 22, the lower spring 23, the alloy contact 24, the armature 25, the clamping portion 26, the stopper 27, the stationary spring contact assembly 3, the upper stationary spring set 31, the lower stationary spring set 32, the upper stationary spring 33, the upper contact 34, the lower stationary spring 35, the lower contact 36, the reset assembly 4, the cantilever beam 41, the protruding portion 42, the supporting portion 43, the limiting portion 44, and the outer housing 5 are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. The utility model provides a resistant magnetic latching relay that falls, includes electromagnetic drive subassembly (1), electromagnetic drive subassembly (1) on be provided with movable spring armature contact subassembly (2) and with movable spring armature contact subassembly (2) relative quiet spring contact subassembly (3), movable spring armature contact subassembly (2) and electromagnetic drive subassembly (1) between be provided with reset assembly (4), its characterized in that, reset assembly (4) have the setting in movable spring armature contact subassembly (2) both sides and have elastic cantilever beam (41), electromagnetic drive subassembly (1) upper end be provided with bellying (42) with cantilever beam (41) one-to-one, movable spring armature contact subassembly (2) and electromagnetic drive subassembly (1) closed back cantilever beam (41) laminating and compress tightly in bellying (42) upper end.

2. A drop resistant magnetic latching relay as claimed in claim 1, wherein the cantilever beam (41) is arranged symmetrically with respect to the moving reed armature contact assembly (2), the protrusion (42) is L-shaped, the protrusion (42) has a support portion (43) opposite to the lower side of the cantilever beam (41) and a position-limiting portion (44) opposite to the side of the cantilever beam (41), and the height of the position-limiting portion (44) is greater than the height of the support portion (43).

3. A drop-resistant magnetic latching relay according to claim 1, wherein the electromagnetic driving assembly (1) comprises a driving base (11), an iron core (12) is fixed on the driving base (11), an enameled wire (13) is wound on the iron core (12), a coil lead-out pin (14) connected with the enameled wire (13) is installed on the driving base (11), and a magnetic conductive block (15) and a yoke (16) adjacent to the enameled wire (13) are fixed above the driving base (11).

4. The drop-resistant magnetic latching relay according to claim 3, wherein the driving base body (11) comprises a base (17) and a top plate (18), the iron core (12) and the enameled wire (13) are fixed between the base (17) and the top plate (18), air holes communicated with the iron core (12) and the enameled wire (13) are formed in the lower portion of the base (17), the protruding portion (42) is arranged above the top plate (18), and clamping seats (19) used for clamping the static spring contact assembly (3) are respectively arranged on two sides above the top plate (18).

5. A drop-resistant magnetic latching relay according to claim 4, wherein the movable spring armature contact assembly (2) comprises a movable spring (21), the movable spring (21) comprises an upper spring (22) arranged above the electromagnetic drive assembly (1) and a lower spring (23) vertically arranged outside the yoke (16), the end of the upper spring (22) is fixed with an alloy contact (24) opposite to the fixed spring contact assembly (3), the lower part of the upper spring (22) is fixed with an armature (25) opposite to the yoke (16), two sides of the lower spring (23) are provided with clamping parts (26) clamped and fixed with the yoke (16), and the cantilever beam (41) is arranged on two sides of the upper spring (22) and is integrally formed with the movable spring (21).

6. A drop-resistant magnetic latching relay according to claim 5, characterized in that the armature (25) is in a convex shape, and two stoppers (27) clamped with the upper end of the yoke (16) are respectively fixed at the front and the back of the end of the armature (25) opposite to the yoke (16).

7. A drop resistant magnetic latching relay as claimed in claim 5, wherein said stationary spring contact assembly (3) comprises an upper stationary spring set (31) and a lower stationary spring set (32), said upper stationary spring set (31) and said lower stationary spring set (32) being mounted on said snap seats (19), respectively.

8. A drop resistant magnetic latching relay as claimed in claim 7, wherein said upper stationary spring set (31) comprises an L-shaped upper stationary spring plate (33), an upper contact (34) is fixed to the upper end of said upper stationary spring plate (33) and said upper contact (34) is disposed above the alloy contact (24).

9. A drop resistant magnetic latching relay as claimed in claim 7, wherein said lower stationary spring set (32) comprises an L-shaped lower stationary spring (35), a lower contact (36) is fixed to the upper end of said lower stationary spring (35) and said lower contact (36) is disposed below the alloy contact (24).

10. A drop-resistant magnetic latching relay as claimed in claim 1, wherein the relay is covered by an outer casing (5) made of plastic, the electromagnetic drive assembly (1), the moving spring armature contact assembly (2), the static spring contact assembly (3) and the reset assembly (4) are arranged in the outer casing (5), and the outer casing (5) is sealed by gluing.