WO2017080138A1 - Manual-automatic integrated electromagnetic switch - Google Patents

Abstract

A manual-automatic integrated electromagnetic switch, comprising: a fixed device base (1), a coil iron core (7), a first switch circuit (2) and an inner pendulum assembly (3), wherein the fixed device base plays a role of a support and a mounting rack; the coil iron core for communicating with a direct-current circuit is mounted on the fixed device base; the first switch circuit is used to be connected to an external circuit so as to be externally connected to a circuit; and a first permanent magnet (12) of the inner pendulum assembly and an iron core of the coil iron core can generate a magnetic force function, i.e. being capable of attracting or repelling each other, and a first communication sheet (18) of the inner pendulum assembly can enable the first switch circuit to be conducted. With regard to the electromagnetic switch, the electromagnetic switch can be controlled by means of power supply, an operator does not need to continuously press the electromagnetic switch, and an elastic piece also does not need to change a state of the electromagnetic switch, and thus, the quality of the electromagnetic switch is guaranteed, so as to prolong the service life of the electromagnetic switch. The electromagnetic switch can also achieve manual control, so as to guarantee normal use of the electromagnetic switch when the electromagnetic switch cannot be controlled by means of power supply.

Description

A hand-integrated electromagnetic switch

This application claims priority to Chinese Patent Application No. 2015107707361, entitled "A Hand-integrated Electromagnetic Switch", filed on November 12, 2015, the entire contents of which is incorporated herein by reference. In the application.

Technical field

The invention relates to the field of switch technology, and more particularly to a hand-integrated electromagnetic switch.

Background technique

The switch can be divided into high-voltage switch, low-voltage switch box electrical accessory switch and so on. Appliance switch is a kind of switch that belongs to electrical accessories. With the development of technology, product function innovation, upgrade, etc., it is required that the appliance switch also has undervoltage protection when the voltage is too low, and power failure protection that does not allow automatic reset after power failure. Among them, the electromagnetic switch is a typical appliance switch with undervoltage protection and power failure protection.

At present, the existing electromagnetic switches generally include a start/stop button, a snap-on mechanism, a holding coil and a contact mechanism, and a spring. In normal use, when the start button is pressed, when the internal snap-on armature is pushed to the normal closed position of the magnetic circuit of the magnetic system, the armature drives the electromagnetic switch contact part to be closed, and the spring is compressed; when the stop button is pressed, The compression spring drives the internal snap-on armature to be out of the closed position of the magnetic system, the electromagnetic switch contacts are separated, and the electromagnetic switch is disconnected.

In summary, with the existing electromagnetic switch, the state of the spring is adjusted by pressing during use, thereby achieving the closing and opening of the electromagnetic switch. However, in the long-term use, the spring will age, which affects the quality of the electromagnetic switch and shortens the life of the electromagnetic switch.

Therefore, how to ensure the quality of the electromagnetic switch to prolong the service life of the electromagnetic switch is a technical problem that a person skilled in the art needs to solve at present.

Summary of the invention

In view of this, the present invention provides a hand-integrated electromagnetic switch that ensures the quality of the electromagnetic switch to extend the service life of the electromagnetic switch.

To achieve the above object, the present invention provides the following technical solutions:

A hand-integrated electromagnetic switch comprising:

Fixed base;

a coil core disposed on the fixed base, the coil of the coil core being used to be connected to a DC circuit;

a first switch circuit for connecting to an external circuit disposed on the fixed base;

An inner pendulum assembly having a first permanent magnet that generates a magnetic force with the core of the coil core to swing the inner pendulum assembly and a first one capable of communicating with the first switch circuit Connected pieces.

Preferably, the electromagnetic switch further includes: a second switch circuit disposed on the fixed base for connecting with the test circuit;

The inner pendulum assembly has a second permanent magnet that generates a magnetic force with the iron core of the coil core, and a second communication piece that can communicate with the second switching circuit, and the second permanent magnet and the The magnetic direction of the iron core and the magnetic direction of the first permanent magnet and the iron core are opposite.

Preferably, in the above electromagnetic switch, an indicator light is connected to the test circuit.

Preferably, in the above electromagnetic switch, the second switch circuit includes two left pieces of the elastic piece electrode, and the two left pieces of the elastic piece electrode can be electrically connected through the second connecting piece, and the two pieces of the left piece of the elastic piece are left. Both are used for the test circuit connection.

Preferably, in the above electromagnetic switch, the first switch circuit includes two right edges of the spring electrode, and the two right pieces of the spring electrode can be turned on by the first connecting piece, and the two pieces of the right piece of the elastic piece are right. Both are used for the external circuit connection.

Preferably, in the above electromagnetic switch, the inner pendulum assembly further includes a U-shaped inner swing bracket, and the U-shaped inner swing bracket is swingably mounted on a shaft hole of the fixed base through a rotating shaft, the first A permanent magnet and the second permanent magnet are both disposed on the U-shaped inner swing bracket.

Preferably, in the above electromagnetic switch, the first permanent magnet and the second permanent magnet are respectively disposed on outer surfaces of two side walls of the U-shaped inner swing bracket.

Preferably, in the above electromagnetic switch, the coil core is disposed in a U-shaped space of the U-shaped inner swing bracket.

According to the above technical solution, the present invention discloses a hand-integrated electromagnetic switch, comprising: a fixed base, a coil core, a first switch circuit and a pendulum assembly, wherein the fixed base serves as the entire electromagnetic switch The foundation for supporting and mounting the frame; the coil iron for connecting to the DC circuit The core is mounted on the fixed base; the first switch circuit is connected to the external circuit, and the external circuit is the circuit that the solenoid valve needs to control; the first permanent magnet of the inner pendulum assembly and the iron core of the coil core can generate magnetic force The functions, that is, the mutual attraction or mutual exclusion, the first connecting piece of the inner pendulum assembly can turn on the first switching circuit. During operation, the coil core is connected to the DC circuit. At this time, the iron core generates a stable magnetic field, so that one end of the iron core is an S pole at the N pole end, and the N pole of the iron core and the N pole of the first permanent magnet. Repelling, the S pole of the iron core is attracted to the N pole of the first permanent magnet, and swings the inner swing assembly. When the iron core is attracted to the first permanent magnet, the first connecting piece is away from the first switching circuit, so that the first The switch circuit cannot be connected, and the electromagnetic switch is turned off; when the iron core and the first permanent magnet are repelled, the inner pendulum assembly swings away from the coil core, so that the first connecting piece approaches the first switch circuit until the first The connecting piece is matched with the first switch circuit, the first switch circuit is connected, the electromagnetic switch is turned on, so that the external circuit forms a loop; when the voltage of the DC circuit is reversed, the inner swing assembly is reversely oscillated, thereby realizing electromagnetic The switch is open and on.

The electromagnetic switch disclosed in the present application can control the electromagnetic switch by swinging the inner pendulum assembly by means of power supply, and does not require the operator to press to change the state of the elastic member to change the state of the electromagnetic switch, thereby ensuring the quality of the electromagnetic switch. To extend the life of the electromagnetic switch. In addition, the electromagnetic switch in the present application can also realize manual control to ensure the normal use of the electromagnetic switch when it cannot be controlled by the power supply mode.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can obtain other drawings according to the provided drawings without any creative work.

1 is a top plan view of an electromagnetic switch according to an embodiment of the present invention;

2 is a schematic structural view showing the electromagnetic switch of the A-A direction of FIG. 1 disconnected;

3 is a schematic structural view showing the electromagnetic switch of the A-A direction in FIG. 1;

4 is a top plan view of a pendulum assembly according to an embodiment of the present invention;

Fig. 5 is a B-B direction view of Fig. 4;

detailed description

The core of the invention is to provide a hand-integrated electromagnetic switch that reduces the labor intensity during use of the electromagnetic switch.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

As shown in FIG. 1 to FIG. 5, the present invention discloses a hand-integrated electromagnetic switch, comprising: a fixed base 1, a coil core 7, a first switch circuit 2 and a pendulum assembly 3, wherein The base 1 serves as a base of the entire electromagnetic switch and functions as a support and a mounting bracket; the coil core 7 for connecting with the DC circuit is mounted on the fixed card 5 of the fixed base 1; the first switch circuit 2 is used for Connected to an external circuit, the external circuit is the circuit that the electromagnetic switch needs to control; the permanent magnets 17 and 12 of the inner pendulum assembly 3 and the iron core of the coil core 7 can generate magnetic force, that is, can attract each other or mutually repel each other, iron The first communication piece 18 of the inner pendulum assembly 3 when the core of the core coil is attracted can electrically turn on the first switching circuit 2. During operation, the coil core 7 is connected to the DC circuit. At this time, the iron core generates a stable magnetic field, so that one end of the iron core is an S pole at one end of the N pole, and the N pole of the iron core and the first permanent magnet 17 are The N pole is repelled, and the S pole of the iron core is attracted to the N pole of the permanent magnet 17 to swing the inner swing assembly. When the iron core and the permanent magnet 12 are attracted, the first connecting piece 18 is away from the first switching circuit 2, so that The first switch circuit 2 cannot be connected, and the electromagnetic switch is turned off; when the iron core and the first permanent magnet 12 are repelled, the inner pendulum assembly 3 swings away from the coil core 7 so that the first connecting piece 18 is close to the first a switching circuit 2 until the first connecting piece 18 is engaged with the first switching circuit 2, the first switching circuit 2 is connected, the electromagnetic switch is turned on, so that the external circuit forms a loop; when the voltage of the DC circuit is reversed, The inner pendulum assembly swings in the opposite direction, thereby achieving electromagnetic switch disconnection and conduction.

The electromagnetic switch disclosed in the present application can control the electromagnetic switch by swinging the inner pendulum assembly 3 by means of power supply, and does not require the operator to press to change the state of the elastic member to change the state of the electromagnetic switch, thereby ensuring the electromagnetic switch. Quality to extend the life of the electromagnetic switch. In addition, the electromagnetic switch in the present application can also realize manual control to ensure the normal use of the electromagnetic switch when it cannot be controlled by the power supply mode.

In a further embodiment, the electromagnetic switch further includes a second switch power disposed on the fixed base The circuit 4 is connected to the test circuit, and the test circuit is a circuit for detecting the state of the electromagnetic switch. In order to achieve control of the second switching circuit 4, the inner pendulum assembly has a second permanent magnet 17 that generates a magnetic force with the core of the coil core 7, and has a second connecting piece 11 that can communicate with the second switching circuit 4. . In order to ensure stable swinging of the inner pendulum assembly 3 of the electromagnetic switch, the magnetic direction of the second permanent magnet 17 and the iron core is set to be opposite to the magnetic direction of the first permanent magnet 12 and the iron core to ensure the inner pendulum assembly. 3 swings back and forth between the first switching circuit 2 and the second switching circuit 4.

During operation, when the coil core 7 communicates with the DC circuit through the coil electrode 6, the first permanent magnet 12 repels the iron core and the second permanent magnet 17 collides with the iron core, and the inner pendulum assembly 3 leads to The direction of a permanent magnet 17 is swung until the second permanent magnet 17 is attracted to the core. At this time, the first connecting piece 18 turns on the first switching circuit 2, and the electromagnetic switch is turned on, and the second connecting piece 11 Away from the second switch circuit 4, the second switch circuit 4 is not turned on, and the test circuit cannot form a loop. At this time, the operator records the state of the test circuit as the electromagnetic switch on state; when the voltage of the DC circuit is reversed, the first The permanent magnet 12 is attracted to the iron core, the second permanent magnet 17 is repelled with the iron core, and the inner pendulum assembly 3 is swung in the direction of the second permanent magnet 17, and the first connecting piece 18 is away from the first switching circuit 2, that is, The electromagnetic switch is turned off, and the second connecting piece 11 turns on the second switching circuit 4 to alert the operator that the state is that the electromagnetic switch is turned off. In summary, the inner pendulum assembly 3 swings between the first switching circuit 2 and the second switching circuit 4, when swinging to the first switching circuit 2, the electromagnetic switch is turned on, and the second switching circuit 4 is turned off, and the detecting device When not swaying to the second switching circuit 4, the second switching circuit 4 is turned on, the detecting device is turned on, the first switching circuit 2 is not turned on, and the electromagnetic switch is turned off.

By setting the second switch circuit 4, it is convenient for the operator to detect the current state of the electromagnetic switch, that is, the open state or the conductive state, to prevent the occurrence of erroneous operation, and prolong the service life of the electromagnetic switch.

In addition, after the iron core and the first permanent magnet 12 are sucked, if the DC circuit is disconnected, under the action of the magnetic force of the permanent magnet, the first permanent magnet 12 and the iron core will continue to adsorb without breaking, similarly, when iron After the core and the second permanent magnet 17 are sucked together, they are not disconnected when the voltage direction is not changed. Therefore, power supply can be avoided and energy saving can be achieved. When it is necessary to change the state of the electromagnetic switch, it is only necessary to change the voltage direction of the pulse of a certain width, and it is not necessary to maintain the power supply of the DC circuit.

In a specific embodiment, an indicator light is connected to the test circuit to implement an alert by the indicator light. It is convenient for the operator to observe, that is, when the indicator light is on, the electromagnetic switch is in an off state, and when the indicator light is off, the electromagnetic switch is in an on state. In the present application, only a specific warning device is provided. In practice, different indicating devices can be connected to the detecting device according to different needs, and all are within the protection range.

The structure of the second switch circuit 4 disclosed in the present application specifically includes two left pieces of the elastic piece electrodes, and the right piece contacts 15 of the left pieces of the two pieces of the elastic piece are respectively connected to the positive electrode and the negative pole of the test circuit, in order to realize the electromagnetic switch state detection. The two pieces of the left elastic piece of the elastic piece are not connected, and the two pieces of the left piece of the elastic piece are connected through the second connecting piece 11. When the second connecting piece 11 is not in communication with the two left pieces of the elastic piece electrode, the detecting circuit is not turned on, indicating that the first switching circuit 2 is turned on, and the electromagnetic switch is in an on state.

On the basis of the above technical solution, the first switch circuit 2 disclosed in the present application includes two right pieces of the elastic piece electrodes, and the right pieces of the two pieces of the elastic piece can be electrically connected through the first connecting piece 18, and the two pieces of the right piece of the elastic piece are The left chip contacts 16 are respectively connected to the positive and negative terminals of the external circuit. In order to realize the function of the electromagnetic switch, the two pieces of the elastic electrode of the two pieces are not connected, and the two pieces of the right piece of the elastic piece are connected through the first connecting piece 18. When the first connecting piece 18 is not connected to the two pieces of the elastic piece electrode, the external circuit is not turned on, indicating that the first switching circuit 2 is disconnected, and the electromagnetic switch is in an off state. At this time, the second switching circuit 4 is turned on. The detection circuit is connected.

Herein, only a specific manner of the first switching circuit 2 and the second switching circuit 4 is provided, the core of which is that the two circuit switches can form a complete wire in series in the circuit to be connected, therefore, as long as Devices that can implement this core are all within the scope of protection.

In still further embodiments, the inner pendulum assembly 3 disclosed in the present application further includes a U-shaped inner swing bracket 9 rotatably mounted on the shaft hole 8 of the fixed base 1 via the rotating shaft 13 Above, under the action of the magnetic force, the U-shaped inner swing bracket 9 is rotated about the rotating shaft. Specifically, the first permanent magnet 12 and the second permanent magnet 17 are mounted on the U-shaped inner swing bracket 9 , and the installation positions of the first permanent magnet 12 and the second permanent magnet 17 can be set according to different needs. And are within the scope of protection. The swing of the inner pendulum assembly 3 is usually connected by means of the rotating shaft 13, but the inner swing bracket can also be provided with an elastic structure, which is deformed by the magnetic force to oscillate.

In order to reduce the distance of the swing of the inner pendulum assembly 3, the first permanent magnet 12 and the second permanent magnet 17 are arranged symmetrically about the axis of the rotating shaft 13, and in practice, in order to further reduce the size of the electromagnetic switch, The first permanent magnet 12 and the second permanent magnet 17 are respectively disposed on the outer surfaces of the two side walls of the U-shaped inner swing bracket 9, and the polarities of the side where the two permanent magnets are attached to the U-shaped inner swing bracket 9 the same. At the same time, the first switching circuit 2 and the second switching circuit 4 are also arranged symmetrically about the axis of the rotating shaft 13 to reduce the amplitude of the swing of the inner pendulum assembly 3, reducing the size of the entire electromagnetic switch.

In a further embodiment, the coil core 7 is disposed in the U-shaped space of the U-shaped inner swing bracket 9, that is, the first permanent magnet 12 and the second permanent magnet 17 are simultaneously capable of acting on the coil core. As shown in FIG. 2 and FIG. 3, the inner pendulum assembly 3 realizes continuous swing on the left and right sides under the action of the magnetic force of both the first permanent magnet 12 and the second permanent magnet 17 and the iron core.

The first switch circuit 2 and the second switch circuit 4 in the present application are identical in structure, and therefore, either one of them can be selected in practice and connected to the external circuit, and the other is connected to the detection circuit.

The various embodiments in the present specification are described in a progressive manner, and each embodiment focuses on differences from other embodiments, and the same similar parts between the various embodiments may be referred to each other.

The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments are obvious to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but the scope of the invention is to be accorded

Claims (8)

A hand-integrated electromagnetic switch characterized by comprising: Fixed frame (1); a coil core (7) disposed on the fixed base (1), the coil of the coil core (7) being used to be connected to a DC circuit; a first switch circuit (2) disposed on the fixed base (1) for connecting to an external circuit; An inner pendulum assembly (3) having a first permanent magnet that generates a magnetic force with the iron core (7) of the coil core to swing the inner pendulum assembly (3) (12) and a first connecting piece (18) capable of communicating with the first switching circuit (2). The electromagnetic switch according to claim 1, further comprising: a second switch circuit (4) disposed on the fixed base (1) for connection with the test circuit; The inner pendulum assembly (3) has a second permanent magnet (17) that generates a magnetic force with the iron core of the coil core (7), and a second communication capable of communicating with the second switching circuit (4) a sheet (11), and the magnetic direction of the second permanent magnet (17) and the core and the magnetic direction of the first permanent magnet (12) and the core are opposite. The electromagnetic switch according to claim 2, wherein an indicator light is connected to said test circuit. The electromagnetic switch according to claim 2, wherein said second switch circuit (4) comprises two left-handed electrode electrodes, and said two left-hand pieces of said spring electrode are guided by said second connecting piece (11) The two left-hand pieces of the shrapnel electrode are used for the test circuit connection. The electromagnetic switch according to any one of claims 1 to 4, wherein the first switch circuit (2) comprises two shrapnel electrode right pieces, and the two of the shrapnel electrode right pieces can pass the first The connecting piece (18) is turned on, and the two right pieces of the shrapnel electrode are used for the external circuit connection. The electromagnetic switch according to any one of claims 2 to 4, wherein the inner pendulum assembly (3) further comprises a U-shaped inner swing bracket (9), and the U-shaped inner swing bracket (9) passes a rotating shaft (13) is swingably mounted on a shaft hole (8) of the fixed base (1), and the first permanent magnet (12) and the second permanent magnet (17) are both disposed on the U On the inner swing bracket (9). The electromagnetic switch according to claim 6, wherein said first permanent magnet (12) And the second permanent magnets (17) are respectively disposed on outer surfaces of the two side walls of the U-shaped inner swing bracket (9). The electromagnetic switch according to claim 7, characterized in that the coil core (7) is disposed in a U-shaped space of the U-shaped inner swing bracket (9).

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