Clapper type relay

Abstract

The utility model relates to a clapper-type relay which specifically comprises a base assembly, a magnetic circuit assembly installed on the upper portion of the base assembly, a support assembly fixedly connected to the upper portion of the magnetic circuit assembly, a quick-action switch fixedly connected to the support assembly, a contact assembly rotatably connected to the lower portion of the magnetic circuit assembly, and a spring connected to the upper portion of the magnetic circuit assembly. The top of the contact assembly is connected with the quick-acting switch through a cam, the contact assembly comprises an armature assembly, after the magnetic circuit assembly is powered on, electromagnetic force is generated between the magnetic circuit assembly and the contact assembly, the contact assembly is attracted to move in the direction of the magnetic circuit assembly and attracted together, the cam moves, a normally-open contact of the quick-acting switch is powered on, and a normally-closed contact of the quick-acting switch is powered off. When the electromagnetic force disappears, the contact assembly is far away from the magnetic circuit assembly under the action of rebound force of the spring, the cam is in contact with the quick-acting switch, the normally-open contact of the quick-acting switch is disconnected, and the normally-closed contact of the quick-acting switch is connected, the structure is simple and compact, the size is small, the electromagnetic force is large, and the switching speed of the normally-open contact and the normally-closed contact of the quick-acting switch is high, and the reliability is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of low-voltage electrical apparatus, and particularly relates to a snap-on type relay. BACKGROUND

[0002] At present, there are many relay products on the market, but most of them are large in size and complex in structure, and the electromagnetic system of the relay is mainly of the solenoid type. When the product is developed and designed, the electromagnetic attraction is small, the electromagnetic system is large in size, and many parts are involved, thereby increasing the development cycle and development cost and bringing inconvenience to installation, use and production. CONTENT OF THE UTILITY MODEL

[0003] (I) Technical problem to be solved

[0004] The utility model provides a snap-on type relay to solve the problems of complex structure, small electromagnetic attraction and large size of the existing solenoid type relay.

[0005] (II) Technical scheme

[0006] In order to solve the above problems, the utility model provides a snap-on type relay, which comprises a base assembly, a magnetic circuit assembly, a support assembly, a contact assembly and a quick-acting switch, the upper part of the base assembly is provided with the magnetic circuit assembly, the upper part of the magnetic circuit assembly is fixedly connected with the support assembly, the support assembly is fixedly connected with the quick-acting switch, the lower part of the contact assembly is rotationally connected with the lower part of the magnetic circuit assembly, and the upper part of the contact assembly is connected with the upper part of the magnetic circuit assembly through a counterforce spring, the top of the contact assembly is connected with the quick-acting switch through a cam, the contact assembly comprises an armature assembly, when the magnetic circuit assembly is connected with power, electromagnetic force is generated between the magnetic circuit assembly and the armature assembly, the contact assembly is attracted to move close to the magnetic circuit assembly, and the contact assembly is attracted to the magnetic circuit assembly at this time, at this time, the cam is displaced, the normally open contact point of the quick-acting switch is connected, and the normally closed contact point is disconnected, when the magnetic circuit assembly is disconnected with power, the electromagnetic force between the contact assembly and the magnetic circuit assembly disappears, the contact assembly is away from the magnetic circuit assembly under the elastic force of the counterforce spring, at this time, the cam is in contact with the quick-acting switch, the normally open contact point of the quick-acting switch is disconnected, and the normally closed contact point is connected.

[0007] Preferably, the magnetic circuit assembly comprises a yoke, the yoke is fixedly connected with a suppressor assembly on the side surface, the suppressor assembly is provided with a terminal at both ends, the terminal is connected with a coil, the coil is provided with an iron core in the middle part, one end of the iron core is connected with the suppressor assembly, and the other end is close to the contact assembly.

[0008] Preferably, the bracket assembly comprises a left bracket and a right bracket, the left bracket and the right bracket are fixedly connected with a mounting plate at the upper part and fixedly connected with the yoke at the lower part, and the mounting plate is fixedly connected with the quick-action switch.

[0009] Preferably, the armature assembly is fixedly connected with a linkage plate at the upper part and rotatably connected with the yoke at the lower part through a positioning plate.

[0010] Preferably, the linkage plate is provided with a spring seat at the middle part, and the counterforce spring is installed in the spring seat at one end and connected with a spring support above the yoke at the other end.

[0011] Preferably, the number of the quick-action switches is not less than 1.

[0012] (Three) technical effects

[0013] After the magnetic circuit assembly is connected with the power supply, the electromagnetic force generated thereby attracts the contact assembly to move in the direction of the magnetic circuit assembly, and the yoke encloses the electromagnetic force generated by the electromagnetic coil inside to enhance the effect of the electromagnetic force. At this time, the cam is displaced, the normally open contact point of the quick-action switch is connected, and the normally closed contact point is disconnected. When the magnetic circuit assembly is disconnected from the power supply, the electromagnetic force between the contact assembly and the magnetic circuit assembly disappears, and the contact assembly moves away from the magnetic circuit assembly under the elastic force of the counterforce spring. At this time, the cam contacts the quick-action switch, the normally open contact point of the quick-action switch is disconnected, and the normally closed contact point is connected. The structure is relatively simple and compact, has a small volume, has large electromagnetic attraction, and has fast switching speed and high reliability of the normally open contact point and the normally closed contact point of the quick-action switch. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the embodiments will be briefly introduced below. Obviously, other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0015] Fig. 1 The front view of the snap-type relay provided by the embodiment of the present application.

[0016] Fig. 2 The connection schematic diagram of the magnetic circuit assembly and the contact assembly provided by the embodiment of the present application.

[0017] Fig. 3 The three-dimensional view of the snap-type relay provided by the embodiment of the present application.

[0018] Explanation of reference signs:

[0019] 1-Base assembly, 2-Fastener, 3-Magnetic circuit assembly, 4-Left bracket, 5-Right bracket, 6-Mounting plate, 7-Quick-action switch, 8-Yoke, 9-Positioning plate, 10-Coil, 11-Armature assembly, 12-Linkage plate, 13-Iron core, 14-Spring seat, 15-Reaction spring, 16-Spring support, 17-Cam, 18-Suppressor assembly, 19-Terminal block. Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application. Example

[0021] Reference Appendix Figs. 1-3 , attached Fig. 1 This is a front view of the latching relay provided in the embodiments of this application, with attached... Fig. 2 This is a schematic diagram showing the connection between the magnetic circuit assembly and the contact assembly provided in the embodiments of this application. Fig. 3 As shown in the figure, the snap-action relay provided in the embodiment of this application includes a base assembly 1. A yoke 8 is fixedly connected to the upper part of the base assembly 1. An suppressor assembly 18 is provided on the left side of the yoke 8 and is fixed to the yoke 8 by fasteners 2. The suppressor assembly 18 has terminals 19 at both ends, and a coil 10 is connected to the terminals 19. One end of the iron core 13 in the middle of the coil is fixed to the suppressor assembly 18 by fasteners 2, and the other end is close to the armature assembly 11. One end of the armature assembly 11 is connected to the linkage plate. 12 is fixed by fastener 2, and the other end is rotatably connected to the lower part of the yoke by positioning plate 9. It moves in the slot of the yoke 8 in the manner of a rotating shaft. A cam 17 is installed above the linkage plate 12. As the linkage plate 12 and armature assembly 11 move, the cam 17 changes the state of the quick switch 7 in contact with it. A spring support 16 is fixed to the upper left side of the yoke 8 by fastener 2. A spring seat 14 is installed in the middle part of the linkage plate 12. One end of the reaction spring 15 is connected to the spring support 16, and the other end is installed in the spring seat 14.

[0022] The left side of the upper part of the yoke 8 is fixedly connected to the left bracket 4 by fastener 2, and the right side is fixedly connected to the right bracket 5 by fastener 2. One end of the mounting plate 6 is fixedly connected to the left bracket 4, and the other end is fixedly connected to the right bracket 5. The quick-acting switch 7 is fixedly installed on the upper part of the mounting plate 6. The number of quick-acting switches can be adjusted according to the requirements. When there are two or more quick-acting switches 7, they are installed side by side on the upper part of the mounting plate 6 along the direction of the left bracket 4 and the right bracket 5.

[0023] When the magnetic circuit assembly 3 composed of the suppressor assembly 18, the yoke 8, the coil 10, the terminal 19 and the core 13 is connected to the power supply, the coil 10 generates a magnetic field and magnetizes the core 13 installed therein, the electromagnetic force between the magnetic circuit assembly 3 and the armature assembly 11 is generated, the armature assembly 11 and the linkage plate 12 are rotated around the slot hole of the yoke 8, move to the direction of the core 13 and are attracted together, the normally open contact of the quick-acting switch 7 in contact with the cam 17 is connected, the normally closed contact is disconnected, the control power voltage applied to the terminal 19 of the suppressor assembly 18 is disconnected, the coil 10 loses power, the magnetic field disappears, the linkage block 12 and the armature assembly 11 fixed together lose electromagnetic force and are released under the action of the counter-force spring 15, at the same time, the cam 17 on the linkage plate 12 is in contact with the quick-acting switch 7, the normally open contact of the quick-acting switch 7 is disconnected, the normally closed contact is connected, the structure is simple and compact, the volume is small, the electromagnetic attraction is large, the normally open contact and the normally closed contact of the quick-acting switch are switched quickly, and the reliability is high.

[0024] It should be noted that the terms "longitudinal", "transverse", "inner", "outer", "left", "right", "upper", "lower", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the application is used, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0025] It should also be noted that unless otherwise explicitly specified and limited, the terms "provided with", "opened with" and the like should be understood broadly, and for those skilled in the art, the specific meanings of the above terms in the application can be understood according to the specific circumstances.

Claims

1. A snap-action relay, characterized by The application relates to a magnetic switch, which comprises a base assembly, a magnetic circuit assembly, a support assembly, a contact assembly and a quick-action switch, wherein the upper part of the base assembly is provided with the magnetic circuit assembly, the upper part of the magnetic circuit assembly is fixedly connected with the support assembly, the support assembly is fixedly connected with the quick-action switch, the lower part of the contact assembly is rotationally connected with the lower part of the magnetic circuit assembly, the upper part of the contact assembly is connected with the upper part of the magnetic circuit assembly through a counterforce spring, the top of the contact assembly is connected with the quick-action switch through a cam, the contact assembly comprises an armature assembly, when the magnetic circuit assembly is connected with power supply, electromagnetic force is generated between the magnetic circuit assembly and the armature assembly, the contact assembly is attracted to move towards the magnetic circuit assembly, and the contact assembly is attracted to the magnetic circuit assembly; at this time, the cam is displaced, the normally-open contact point of the quick-action switch is connected, and the normally-closed contact point of the quick-action switch is disconnected; when the magnetic circuit assembly is disconnected with power supply, the electromagnetic force between the contact assembly and the magnetic circuit assembly disappears, the contact assembly is away from the magnetic circuit assembly under the elastic force of the counterforce spring; at this time, the cam is in contact with the quick-action switch, the normally-open contact point of the quick-action switch is disconnected, and the normally-closed contact point of the quick-action switch is connected.

2. A snap-action relay according to claim 1, characterised in that The magnetic circuit assembly comprises a yoke, the yoke is fixedly connected with a suppressor assembly on the side, the suppressor assembly is provided with a terminal at both ends, the terminal is connected with a coil, the coil is provided with an iron core in the middle part, one end of the iron core is connected with the suppressor assembly, and the other end is close to the contact assembly.

3. A snap-action relay according to claim 2, wherein The support assembly comprises a left support and a right support, the left support and the right support are fixedly connected with a mounting plate on the upper part and are fixedly connected with the yoke on the lower part, and the mounting plate is fixedly connected with the quick-action switch.

4. A snap-action relay according to claim 2, wherein The armature assembly is fixedly connected with a linkage plate on the upper part and is rotationally connected with the yoke on the lower part through a positioning plate.

5. A snap-action relay according to claim 4, wherein The linkage plate is provided with a spring seat in the middle part, one end of the counterforce spring is arranged in the spring seat, and the other end of the counterforce spring is connected with a spring support column above the yoke.

6. A snap-action relay according to any one of claims 1 to 5, characterized in that, The number of the quick-action switches is not less than 1.

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