CN113299520A

CN113299520A - Electromechanical type radio frequency relay solenoid mechanism

Info

Publication number: CN113299520A
Application number: CN202011585103.0A
Authority: CN
Inventors: 刘珍珍
Original assignee: Suzhou Hangjingda Microwave Technology Co ltd
Current assignee: Suzhou Hangjingda Microwave Technology Co ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-08-24
Anticipated expiration: 2040-12-28
Also published as: CN113299520B

Abstract

The invention relates to an electromechanical radio frequency relay solenoid mechanism which sequentially comprises an electromagnetic system and a contact system which are connected with each other from top to bottom, wherein the left end and the right end of the inner side between a second soft magnet and a third soft magnet are respectively provided with a solenoid mechanism, each solenoid mechanism comprises a coil framework and a push rod system, and each push rod system sequentially comprises a T-shaped clamping head, an iron core and a push rod from top to bottom. The electromechanical radio frequency relay solenoid mechanism provided by the invention has the advantages that the reliability is improved, the electromechanical radio frequency relay solenoid mechanism can work in a severe environment, especially the requirement of mechanical vibration can be met, and the service life times of the relay are obviously improved. The free stroke of the radio frequency electromagnetic relay is ensured, so that the service life times of the radio frequency electromagnetic relay can be ensured. The invention can work reliably in high temperature and high humidity environment.

Description

Electromechanical type radio frequency relay solenoid mechanism

Technical Field

The invention relates to the technical field of radio frequency electromagnetic relays, in particular to an electromechanical solenoid mechanism of a radio frequency relay.

Background

In the field of radio frequency electromagnetic relays (coaxial radio frequency switches), a solenoid structure is often used, and under the action of electromagnetic force, a contact elastic sheet of a switch is pushed to act through the action of an iron core in the solenoid structure, so that the opening and closing of a radio frequency circuit are controlled.

The solenoid structure belongs to the existing mature technology, however, how to apply to the radio frequency electromagnetic relay, need to carry out the reliability design, and carry out some structures with additional function, guarantee that radio frequency electromagnetic relay reliably contacts and reliably breaks when breaking the radio frequency circuit, and can guarantee several million even tens of millions of reliability work.

The radio frequency electromagnetic relay belongs to a product for high-end value-added communication, and is generally used for controlling radio frequency signals, such as a phase-controlled radar matrix, a satellite receiving ground system, a radar duty system, a radar ground base station and the like, and in the occasions, the environment is severe, and the maintenance is inconvenient. Under these conditions, reliable operation is required, and thus, severe demands are made on the reliability and the number of life times of the switch.

The most important defect of many existing relays with similar structures is that products are easy to malfunction under severe environments, especially places with strong mechanical vibration.

The electrical service life problem of the radio frequency electromagnetic relay is a problem for manufacturers of the radio frequency electromagnetic relay, so that the problem of the reliability of the radio frequency electromagnetic relay, particularly the service life of the radio frequency electromagnetic relay, is solved while the working condition of the radio frequency electromagnetic relay adapting to the severe environment is solved.

In the radio frequency electromagnetic relay industry, a few manufacturers capable of producing radio frequency electromagnetic relays internationally exist, but the manufacturers also have a plurality of typical structures and own patent applications. Studying products of international large brands, substantially similar structures are illustrated in fig. 1-4.

Wherein, the electromagnetic system in fig. 1-4 mainly comprises a soft magnet 1, a coil skeleton 3, and an iron core 4 push rod 5, wherein a permanent magnet 6 is disposed on the top of the electromagnetic system in fig. 2-4.

As shown in fig. 1, the push rod 5 is movable, but there is abnormal sound in the relay due to no fixed structure, and the inertial movement of the push rod 5 causes malfunction of the contact system during the vibration test, which results in a reliability problem.

Meanwhile, under a severe high-temperature environment, the push rod 5 is a metal piece, and the coil framework 3 is a plastic piece, so that the adhesion is easy, and the reliable work of the radio frequency electromagnetic relay is influenced.

As shown in fig. 2, the core 4 and the contact system 10 are in rigid contact, and the idea of the designer is to ensure flexible contact through an air gap, which is not achieved at all. Because the coil framework 3 has limited space, larger attracting ampere-turn value can not be achieved, when the air gap is large, the electromagnetic attraction is naturally reduced, the holding force of the iron core 4 is reduced, and the reliability of the relay is influenced.

Due to rigid contact, when the contact spring of the radio frequency electromagnetic relay contact system deforms or the structural parameters change, the radio frequency electromagnetic relay can be in poor contact, and the service life of the radio frequency electromagnetic relay is influenced.

Meanwhile, under a severe high-temperature environment, the push rod 5 is a metal piece, and the coil framework 3 is a plastic piece, so that the adhesion is easy, and the reliable work of the relay is influenced.

As shown in fig. 3, the structure is similar to the structure, and the defect is that the fixing of the elastic body 7 is realized by epoxy resin, and there is a risk of falling off, so that the requirements of strong vibration test cannot be met, and the severe environment cannot be met. This structure, although patented, has not been practically applied on a large scale.

As shown in fig. 4, the structure is similar to that of the present patent, the purpose of flexible contact is achieved by a push rod spring 8, and the defect is that the push rod spring 8 is not fixed and has no pre-pressure, and the relay has a risk of malfunction under the condition of mechanical vibration.

Under the harsh high temperature environment, the push rod 5 is a metal piece, and the coil framework 3 is a plastic piece, so that the adhesion is easy, and the reliable work of the relay is influenced.

This structure, although patented, has not been practically applied on a large scale. However, the idea of solving the problem is correct, but there is a risk that the severe working environment, especially the environment of mechanical vibration, impact and acceleration, cannot be satisfied.

In view of the above-mentioned drawbacks, the present designer has made active research and innovation to create an electromechanical rf relay solenoid mechanism, which has more industrial application value.

Disclosure of Invention

To solve the above technical problems, an object of the present invention is to provide an electromechanical rf relay solenoid mechanism.

In order to achieve the purpose, the invention adopts the following technical scheme:

an electromechanical radio frequency relay solenoid mechanism comprises an electromagnetic system and a contact system which are connected with each other from top to bottom in sequence, the electromagnetic system comprises a first soft magnet, a second soft magnet and a third soft magnet from top to bottom in sequence, a first movable cavity is arranged between the first soft magnet and the second soft magnet, a spiral tube mechanism is arranged at the left end and the right end of the inner side between the second soft magnet and the third soft magnet, the spiral tube mechanism comprises a coil framework and a push rod system, the coil framework comprises a metal tube and a plastic part from inside to outside in sequence, a push rod pipeline is arranged at the inner side of the metal tube along the vertical direction, the push rod system is movably inserted in the push rod pipeline, the push rod system comprises a T-shaped clamping head, an iron core and a push rod from top to bottom in sequence, the iron core is movably inserted in the push rod pipeline, the T-shaped clamping head at the top of the iron core is arranged in the first movable cavity, the top of push rod pipeline is provided with the stage, and the outside cover of the iron core between T type dop and the stage is equipped with the stage spring, and the mounting groove has been seted up along vertical direction to the bottom intermediate position of iron core, and the top of push rod is pegged graft and is gone into in the mounting groove and be connected the setting with the push rod spring in the mounting groove.

As a further improvement of the invention, an enameled wire is arranged on the outer side of the plastic part.

As a further improvement of the invention, a second movable cavity is arranged between the bottom of a third soft magnet of the electromagnetic system and the contact system, a third movable cavity is arranged at the top of the inner side of the contact system, the contact system comprises a contact guide pillar, a contact elastic sheet and a contact conductor, the contact guide pillar is movably arranged between the second movable cavity and the third movable cavity along the vertical direction, the bottom of the push rod is connected with the top of the contact guide pillar, the contact elastic sheet is arranged at the bottom of the contact guide pillar, and the contact conductors are arranged on the left side and the right side of the bottom of the contact elastic sheet.

As a further improvement of the invention, the left side and the right side of the top of the contact system are both provided with contact guide pillar grooves along the vertical direction, the contact guide pillars are movably arranged in the contact guide pillar grooves, the top of each contact guide pillar is provided with a contact guide pillar chuck, and the outer side of each contact guide pillar between the contact guide pillar chuck and the contact guide pillar groove is sleeved with a contact guide pillar spring.

By the scheme, the invention at least has the following advantages:

the electromechanical radio frequency relay solenoid mechanism provided by the invention has the advantages that the reliability is improved, the electromechanical radio frequency relay solenoid mechanism can work in a severe environment, especially the requirement of mechanical vibration can be met, and the service life times of the relay are obviously improved. The free stroke of the radio frequency electromagnetic relay is ensured, so that the service life times of the radio frequency electromagnetic relay can be ensured. The invention can work reliably in high temperature and high humidity environment.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a first prior art relay mechanism;

FIG. 2 is a schematic diagram of a second prior art relay mechanism;

FIG. 3 is a schematic diagram of a third prior art relay mechanism;

FIG. 4 is a schematic diagram of a fourth prior art relay mechanism;

FIG. 5 is a schematic structural view of the present invention;

FIG. 6 is a schematic diagram of the electromagnetic system of FIG. 5;

FIG. 7 is a schematic structural view of the solenoid mechanism of FIG. 6;

FIG. 8 is a schematic diagram of the construction of the bobbin of FIG. 7;

FIG. 9 is a schematic structural view of the putter system of FIG. 7;

FIG. 10 is a schematic diagram of the contact system of FIG. 5;

FIG. 11 is a schematic structural view of the coil mechanism in a released state;

FIG. 12 is a schematic view of the construction of the solenoid mechanism in an engaged state;

fig. 13 is a comparison view of the initial contact state and the elastic contact state of the solenoid mechanism, in which the left diagram in fig. 13 is a schematic configuration view of the initial contact state of the solenoid mechanism, and the right diagram in fig. 13 is a schematic configuration view of the elastic contact state of the solenoid mechanism.

In the drawings, the meanings of the reference numerals are as follows.

1 soft magnet 2 enameled wire

3 coil frame 4 iron core

5 push rod 6 permanent magnet

7 elastomer 8 push rod spring

9 electromagnetic system 10 contact system

11 a first soft-magnetic body 12 a second soft-magnetic body

13 spiral tube mechanism 14 third soft magnet

15-stage spring 16 push rod system

17 stage 18 metal tube

19 push rod pipeline 20 plastic part

21T chuck 22 contact guide post

23 contact spring 24 contact conductor

t over stroke

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Examples

As shown in figures 5 to 13 of the drawings,

an electromechanical radio frequency relay solenoid mechanism comprises an electromagnetic system 9 and a contact system 10 which are connected with each other from top to bottom in sequence, the electromagnetic system 9 comprises a first soft magnet 11, a second soft magnet 12 and a third soft magnet 14 from top to bottom in sequence, a first movable cavity is arranged between the first soft magnet 11 and the second soft magnet 12, a spiral tube mechanism 13 is arranged at the left end and the right end of the inner side between the second soft magnet 12 and the third soft magnet 14, the spiral tube mechanism 13 comprises a coil framework 3 and a push rod system 16, the coil framework 3 comprises a metal tube 18 and a plastic part 20 from inside to outside in sequence, a push rod pipeline 19 is arranged at the inner side of the metal tube 18 along the vertical direction, a push rod system 16 is movably inserted in the push rod pipeline 19, the push rod system 16 comprises a T-shaped clamping head 21, an iron core 4 and a push rod 5 from top to bottom in sequence, the iron core 4 is movably inserted in the push rod pipeline 19, t type dop 21 at iron core 4 top sets up in first movable cavity, and push rod pipeline 19's top is provided with stage 17, and the outside cover of iron core 4 between T type dop 21 and the stage 17 is equipped with stage spring 15, and the mounting groove has been seted up along vertical direction to the bottom intermediate position of iron core 4, and the top of push rod 5 is inserted in the mounting groove and is connected the setting with the push rod spring 8 in the mounting groove.

Preferably, the enamel wire 2 is disposed on the outer side of the plastic part 20.

Preferably, a second movable cavity is arranged between the bottom of the third soft magnet 14 of the electromagnetic system 9 and the contact system 10, a third movable cavity is arranged at the top of the inner side of the contact system 10, the contact system 10 comprises a contact guide post 22, a contact elastic sheet 23 and a contact conductor 24, the contact guide post 22 is movably arranged between the second movable cavity and the third movable cavity along the vertical direction, the bottom of the push rod 5 is connected with the top of the contact guide post 22, the contact elastic sheet 23 is arranged at the bottom of the contact guide post 22, and the contact conductors 24 are arranged on the left side and the right side of the bottom of the contact elastic sheet 23.

Preferably, the contact guide pillar groove is opened along the vertical direction in both sides about the top of contact system 10, and the setting of contact guide pillar 22 activity is in the contact guide pillar groove, and the top of contact guide pillar 22 is provided with the contact guide pillar dop, and the outside cover of contact guide pillar 22 between contact guide pillar dop and the contact guide pillar groove is equipped with the contact guide pillar spring.

The invention relates to an electromechanical type radio frequency relay solenoid mechanism, which is used in a radio frequency electromagnetic relay, aims to solve the problem of service life times of the radio frequency electromagnetic relay, solves the problem of severe service environment, particularly the environment with large vibration amplitude, and ensures reliable contact and work.

Meanwhile, the electromechanical type radio frequency relay solenoid mechanism can also solve the problem of reliable work of the radio frequency electromagnetic relay in a high-temperature environment.

The invention relates to an electromechanical radio frequency relay solenoid mechanism, which mainly solves the problem of elastic reasoning of a push rod in an electromagnetic system on a contact system and ensures reliable contact.

Wherein, fig. 5 is a schematic structural diagram of the present invention.

In which an electromagnetic system 9 and a contact system 10 are shown, respectively, in figures 1 and 10. The electromagnetic system 9 switches on and off the current in the coil, which causes the core 4 to act, which is a typical solenoid configuration.

The main components of the electromagnetic system 9 are the solenoid mechanism 13, which is divided as follows:

the solenoid is added with a spring structure, namely a push rod spring 8, the push rod spring 8 pushes the push rod 5, and when the iron core 4 moves, the push rod 5, the iron core 4 and the push rod spring 8 act simultaneously.

For further explanation, decomposition continues:

fig. 11 and 12 are two operation states of the solenoid mechanism 13, respectively.

Among them, fig. 11 is a schematic structural view in a released state of the solenoid mechanism 13;

fig. 12 is a schematic configuration diagram of the solenoid mechanism 13 in the attraction state.

The decomposition continues as follows:

fig. 13 is a comparison view between the initial contact state and the elastic contact state of the solenoid mechanism, in which the left diagram in fig. 13 is a schematic structural view in the initial contact state of the solenoid mechanism, and the right diagram in fig. 13 is a schematic structural view in the elastic contact state of the solenoid mechanism.

When the push rod 5 works, the push rod can continuously move downwards for t mm under the action of elasticity, namely, the push rod can overtravel, the contact is elastic contact, namely, flexible contact, the contact reliability is ensured, and rigid contact is avoided.

Referring to fig. 8, the metal 18 and the plastic 20 form a coil bobbin 3 of the relay, and the push rod 5 moves up and down in the coil bobbin 3. Because the bobbin 3 is a metal member, the push rod 5 and the bobbin 3 are not adhered to each other even under a severe high-temperature environment.

Even if the use environment is severe, the reliable contact of the relay can be ensured.

Aiming at rigid contact in the market of radio frequency electromagnetic relays, the electrical parameters of the relays can not meet the requirements, and only flexible contact is adopted.

In mass production, if the flexible contact mode is not adopted, qualified products are difficult to adjust, and the production efficiency is low. Moreover, the operation is carried out only by means of an air gap (working air gap), and when the structure slightly changes (part tolerance), the debugging in production is very troublesome. Even if the debugging is qualified, in the subsequent mechanical life experiment, the mechanical parameters and the electrical parameters of the relay are changed greatly, and the precision of the radio frequency electromagnetic relay is influenced.

The electromechanical radio frequency relay solenoid mechanism provided by the invention can still reliably contact in a severe environment, particularly in an environment with strong mechanical vibration;

by adopting the structure, the free stroke of the radio frequency electromagnetic relay is ensured, so that the service life times of the radio frequency electromagnetic relay can be ensured;

under the harsh high temperature environment, the radio frequency electromagnetic relay can reliably work.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The electromechanical radio frequency relay solenoid mechanism is characterized in that the electromechanical radio frequency relay solenoid mechanism sequentially comprises an electromagnetic system (9) and a contact system (10) which are connected with each other from top to bottom, the electromagnetic system (9) sequentially comprises a first soft magnet (11), a second soft magnet (12) and a third soft magnet (14) from top to bottom, a first movable cavity is formed between the first soft magnet (11) and the second soft magnet (12), the left end and the right end of the inner side between the second soft magnet (12) and the third soft magnet (14) are respectively provided with a solenoid mechanism (13), each solenoid mechanism (13) comprises a coil framework (3) and a push rod system (16), each coil framework (3) sequentially comprises a metal pipe (18) and a plastic part (20) from inside to outside, the inner side of each metal pipe (18) is provided with a push rod pipeline (19) along the vertical direction, mobilizable grafting is provided with push rod system (16) in push rod pipeline (19), push rod system (16) down include T type dop (21), iron core (4) and push rod (5) from last in proper order, iron core (4) mobilizable grafting is gone into in push rod pipeline (19), T type dop (21) at iron core (4) top set up in first movable cavity, the top of push rod pipeline (19) is provided with stage (17), the outside cover of iron core (4) between T type dop (21) and stage (17) is equipped with stage spring (15), the mounting groove has been seted up along vertical direction to the bottom intermediate position of iron core (4), the top of push rod (5) is inserted in the mounting groove and is connected the setting with push rod spring (8) in the mounting groove.

2. The electromechanical radio frequency relay solenoid mechanism according to claim 1, characterized in that an enamel wire (2) is provided on the outside of the plastic member (20).

3. The electromechanical radio frequency relay solenoid mechanism according to claim 1, wherein a second movable cavity is provided between a bottom of a third soft magnet (14) of the electromagnetic system (9) and the contact system (10), a third movable cavity is provided at a top of an inner side of the contact system (10), the contact system (10) comprises a contact guide pillar (22), a contact spring (23) and a contact conductor (24), the contact guide pillar (22) is movably provided between the second movable cavity and the third movable cavity along a vertical direction, a bottom of the push rod (5) is connected with the top of the contact guide pillar (22), the contact spring (23) is provided at the bottom of the contact guide pillar (22), and the contact conductors (24) are provided at both left and right sides of the bottom of the contact spring (23).

4. The electromechanical radio frequency relay solenoid mechanism according to claim 3, wherein the contact system (10) has contact post grooves formed on both left and right sides of the top thereof along the vertical direction, the contact posts (22) are movably disposed in the contact post grooves, the top of the contact posts (22) is provided with contact post clamps, and the contact post springs are sleeved on the outer sides of the contact posts (22) between the contact post clamps and the contact post grooves.