CN215008079U

CN215008079U - Energy-saving DC contactor magnetic driving structure

Info

Publication number: CN215008079U
Application number: CN202120747142.XU
Authority: CN
Inventors: 不公告发明人
Original assignee: Suzhou Anlaiqiang Electronic Technology Co ltd
Current assignee: Suzhou Anlaiqiang Electronic Technology Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-12-03
Anticipated expiration: 2031-04-13

Abstract

The utility model discloses an energy-saving direct current contactor magnetic drive structure, include: casing, coil and iron core subassembly, the coil with iron core subassembly is all installed in the casing, just the coil suit is in the iron core subassembly outside, iron core subassembly includes quiet iron core and moves the iron core, it sets up to move the iron core activity quiet iron core below, the cover is equipped with first permanent magnet on the quiet iron core, it is equipped with the second permanent magnet to move the cover on the iron core, first permanent magnet with the magnetic field direction that the second permanent magnet produced with the magnetic field direction that the coil circular telegram produced is the same. The utility model relates to an energy-saving direct current contactor magnetic drive structure, can greatly reduced consumption, material saving cost, furthest's reduction direct current contactor's size to conveniently adjust the size of electromagnetic force.

Description

Energy-saving DC contactor magnetic driving structure

Technical Field

The utility model relates to a direct current contactor technical field, in particular to energy-saving direct current contactor magnetic drive structure.

Background

At present, for a contactor product with a large specification, because the current passing through the contact is large, the magnetic field generated by the contact can generate electric repulsion force on the movable contact piece, and in order to overcome the influence of the electric repulsion force and reduce the bounce of the movable contact piece, the pressure of a contact spring is generally increased in the prior art. By adopting the technical means, the coil needs to generate larger magnetic force to overcome the force of the contact spring, namely, the number of turns of the coil is increased or the current of the coil is increased, the more the number of turns of the coil is, the larger the energizing current is, the larger the generated electromagnetic force is, and the more reliable the electromagnetic switch-on is.

However, the technical means have certain defects: the number of turns of the coil or the current of the coil is increased, so that the power consumption of the coil is increased, the material use cost is increased, the resource waste is caused, the volume of the direct current contactor is increased accordingly, and the real energy conservation cannot be realized. Therefore, it is necessary to design a driving structure that can provide a larger electromagnetic force without increasing the power consumption of the coil, and ensure the contact reliability of the contact.

Disclosure of Invention

The utility model aims to solve the problem that an energy-saving direct current contactor magnetic drive structure is provided to overcome current direct current contactor consumption big, with high costs, bulky and not energy-conserving defect.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: an energy-saving DC contactor magnetic drive structure, comprising: casing, coil and iron core subassembly, the coil with iron core subassembly is all installed in the casing, just the coil suit is in the iron core subassembly outside, iron core subassembly includes quiet iron core and moves the iron core, it sets up to move the iron core activity quiet iron core below, the cover is equipped with first permanent magnet on the quiet iron core, it is equipped with the second permanent magnet to move the cover on the iron core, first permanent magnet with the magnetic field direction that the second permanent magnet produced with the magnetic field direction that the coil circular telegram produced is the same.

As a further improvement of the present invention, the stationary core is provided with a first annular groove along an outer side, and the first permanent magnet is mounted in the first annular groove; a second annular groove is formed in the outer side of the movable iron core, and the second permanent magnet is installed in the second annular groove.

As a further improvement of the present invention, the first permanent magnet is located the quiet iron core is close to the bottom position, the second permanent magnet is located the movable iron core is close to the top position.

As a further improvement of the present invention, the first permanent magnet and the second permanent magnet have a top polarity which is an S-pole and a bottom polarity which is an N-pole.

As a further improvement of the utility model, the casing includes the iron cup and fixes the magnetic conductive plate of iron cup open end, quiet iron core with magnetic conductive plate fixed connection.

As a further improvement of the utility model, the iron core subassembly still includes the sleeve, sleeve fixed connection be in the magnetic conductive plate with between the iron cup, quiet iron core with it all is located to move the iron core in the sleeve, just it is relative to move the iron core quiet iron core removes.

As a further improvement of the utility model, the static iron core move the iron core the sleeve and the coaxial setting of iron cup.

The utility model has the advantages that: the utility model provides an energy-saving DC contactor magnetic driving structure, a first permanent magnet is sleeved on a static iron core, a second permanent magnet is sleeved on a movable iron core, the opposite surfaces of the static iron core and the movable iron core are respectively magnetized, so that the attraction between the static iron core and the movable iron core is increased, the electromagnetic force applied to the movable iron core is increased, and the second permanent magnet can move upwards synchronously along with the movable iron core, so that the magnetic leakage phenomenon is greatly reduced, the magnetic field can be more fully utilized, the coil is not required to generate enough magnetic field intensity, a part of the magnetic field is born by the first permanent magnet and the second permanent magnet which are both made of permanent magnetic materials, the electric energy consumption is not required, the power consumption can be greatly reduced, the material cost is saved, the size of the direct current contactor is reduced to the maximum extent, and the size of the electromagnetic force is conveniently adjusted.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention;

fig. 2 is a schematic cross-sectional view of a stationary core and a first permanent magnet according to the present invention;

FIG. 3 is a schematic cross-sectional view of the movable iron core and the second permanent magnet of the present invention;

fig. 4 is a schematic perspective view of a first permanent magnet according to the present invention;

wherein:

the direction indicated by the arrow in fig. 1 is the direction of the magnetic field generated after the coil is energized;

the direction indicated by the arrow in fig. 2 is the direction of the magnetic field generated by the first permanent magnet;

the direction indicated by the arrow in fig. 3 is the direction of the magnetic field generated by the second permanent magnet.

The following description is made with reference to the accompanying drawings:

1-a housing; 101-iron cup;

102-magnetic conductive plate; 2-coil;

3-static iron core; 4-movable iron core;

5-first permanent magnet; 6-second permanent magnet;

7-sleeve.

Detailed Description

The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings.

Referring to fig. 1 to 4, the utility model provides an energy-saving dc contactor magnetic drive structure, include: casing 1, coil 2, iron core subassembly and sleeve 7, casing 1 include iron cup 101 and fix the magnetic conduction board 102 at the iron cup open end, and coil 2, iron core subassembly and sleeve 7 are all installed in the closed cavity room that is formed by iron cup 101 and magnetic conduction board 102. The sleeve 7 is fixedly connected between the magnetic conduction plate 102 and the iron cup 101, the iron core assembly is installed in the sleeve 7, and the coil 2 is sleeved outside the sleeve 7. The iron core subassembly includes quiet iron core 3 and moves iron core 4, and quiet iron core 3 and magnetic conduction board 102 fixed connection move the iron core 4 activity and set up in quiet iron core 3 below, move iron core 4 and can move quiet iron core 3 relatively, quiet iron core 3, move the coaxial setting of iron core 4, sleeve 7 and iron cup 101.

Referring to fig. 2 and 4, the stationary iron core 3 is sleeved with a first permanent magnet 5, the stationary iron core 3 is provided with a first annular groove along the outer side, the first permanent magnet 5 is installed in the first annular groove, and the first permanent magnet 5 is located at a position of the stationary iron core 3 close to the bottom end. The first permanent magnet 5 is a magnetic ring made of ferrite, neodymium iron boron or the like, the polarity of the top end of the first permanent magnet 5 is an S pole, the polarity of the bottom end of the first permanent magnet 5 is an N pole, and the direction of a magnetic field generated by the first permanent magnet 5 is the same as the direction of a magnetic field generated by electrifying the coil 2 (as shown by an arrow in fig. 2). The magnetic field that first permanent magnet 5 produced magnetizes the lower surface of quiet iron core 3 with moving iron core 4 contact for the appeal increase of quiet iron core 3 to moving iron core 4 increases the electromagnetic force that moves iron core 4 and receives.

Referring to fig. 3, the movable iron core 4 is sleeved with a second permanent magnet 6, a second annular groove is formed along the outer side of the movable iron core 4, the second permanent magnet 6 is installed in the second annular groove, and the second permanent magnet 6 is located at a position, close to the top end, of the movable iron core 4. The second permanent magnet 6 is a magnetic ring made of ferrite, neodymium iron boron or the like, the polarity of the top end of the second permanent magnet 6 is an S pole, the polarity of the bottom end of the second permanent magnet 6 is an N pole, and the direction of a magnetic field generated by the second permanent magnet 6 is the same as the direction of a magnetic field generated by electrifying the coil 2 (as shown by an arrow in fig. 3). The magnetic field generated by the second permanent magnet 6 magnetizes the upper surface of the movable iron core 4 contacted with the static iron core 3, so that the attraction of the movable iron core 4 to the static iron core 3 is increased, and the electromagnetic force applied to the movable iron core 4 is further increased.

Meanwhile, alternating current of magnetic induction lines exists between the first permanent magnet 5 and the second permanent magnet 6, and the electromagnetic force applied to the movable iron core 4 is further increased. And second permanent magnet 6 on the movable iron core 4 can be along with the synchronous upward motion of movable iron core 4, makes the magnetic leakage phenomenon reduce greatly, can be more abundant utilize the magnetic field, need not coil 2 and produce enough big magnetic field intensity, makes a part of magnetic field undertake by first permanent magnet 5 and second permanent magnet 6, and first permanent magnet 5 and second permanent magnet 6 are permanent magnet material, need not to consume the electric energy, can greatly reduced consumption to can material saving cost. After the positions and the materials of the first permanent magnet 5 and the second permanent magnet 6 are determined, the size of the generated magnetic field is fixed, and the size of the electromagnetic force is convenient to adjust.

When the direct current contactor works, the coil 2 is electrified to generate a magnetic field (as shown by arrows in figure 1), the movable iron core 4 moves upwards under the combined action of the magnetic field generated by the electrified coil 2 and the magnetic fields generated by the first permanent magnet 5 and the second permanent magnet 6 until the movable iron core is contacted with the static iron core 3, the movable contact piece which moves upwards synchronously is driven by the movable iron core 4 to be contacted with the static contact of the direct current contactor, and the circuit is connected; after the coil 2 is powered off, the magnetic force generated by the coil 2 on the movable iron core 4 disappears, the movable iron core 4 moves downwards under the action of the reset spring, and the circuit is disconnected.

Therefore, the energy-saving direct current contactor magnetic driving structure of the utility model is characterized in that the static iron core is sleeved with the first permanent magnet, the movable iron core is sleeved with the second permanent magnet, the opposite surfaces of the static iron core and the movable iron core are respectively magnetized, so that the attraction between the static iron core and the movable iron core is increased, the electromagnetic force applied to the movable iron core is increased, and the second permanent magnet can move upwards synchronously along with the movable iron core, so that the magnetic leakage phenomenon is greatly reduced, the magnetic field can be more fully utilized, the coil is not required to generate enough magnetic field intensity, a part of the magnetic field is born by the first permanent magnet and the second permanent magnet which are both made of permanent magnetic materials, the electric energy consumption is not required, the power consumption can be greatly reduced, the material cost is saved, the size of the direct current contactor is reduced to the maximum extent, and the size of the electromagnetic force is conveniently adjusted.

In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the invention. The foregoing description is only illustrative of the preferred embodiments of the invention, which can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. All the contents that do not depart from the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical substance of the present invention all still belong to the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides an energy-saving direct current contactor magnetic drive structure which characterized in that includes: casing (1), coil (2) and iron core subassembly, coil (2) with iron core subassembly is all installed in casing (1), just coil (2) suit is in the iron core subassembly outside, iron core subassembly includes quiet iron core (3) and moves iron core (4), it sets up to move iron core (4) activity quiet iron core (3) below, the cover is equipped with first permanent magnet (5) on quiet iron core (3), it is equipped with second permanent magnet (6) to move the cover on iron core (4), first permanent magnet (5) with the magnetic field direction that second permanent magnet (6) produced with the magnetic field direction that coil (2) circular telegram produced is the same.

2. The magnetic driving structure of the energy-saving DC contactor as claimed in claim 1, wherein: a first annular groove is formed in the outer side of the static iron core (3), and the first permanent magnet (5) is installed in the first annular groove; a second annular groove is formed in the outer side of the movable iron core (4), and the second permanent magnet (6) is installed in the second annular groove.

3. The magnetic driving structure of the energy-saving DC contactor as claimed in claim 1, wherein: the first permanent magnet (5) is located at the position, close to the bottom end, of the static iron core (3), and the second permanent magnet (6) is located at the position, close to the top end, of the movable iron core (4).

4. The magnetic driving structure of the energy-saving DC contactor as claimed in claim 1, wherein: the top end polarities of the first permanent magnet (5) and the second permanent magnet (6) are S poles, and the bottom end polarities are N poles.

5. The magnetic driving structure of the energy-saving DC contactor as claimed in claim 1, wherein: the shell (1) comprises an iron cup (101) and a magnetic conduction plate (102) fixed at the opening end of the iron cup, and the static iron core (3) is fixedly connected with the magnetic conduction plate (102).

6. The magnetic driving structure of the energy-saving DC contactor as claimed in claim 5, wherein: the iron core component further comprises a sleeve (7), the sleeve (7) is fixedly connected with the magnetic conduction plate (102) and the iron cup (101), the static iron core (3) and the movable iron core (4) are located in the sleeve (7), and the movable iron core (4) can be opposite to the static iron core (3) in moving.

7. The magnetic driving structure of the energy-saving DC contactor as claimed in claim 6, wherein: the static iron core (3), the movable iron core (4), the sleeve (7) and the iron cup (101) are coaxially arranged.