CN219457478U - Permanent magnet type direct current operation contactor electromagnetic system - Google Patents

Abstract

The utility model relates to the field of low-voltage appliances, in particular to a permanent magnet type direct current operation contactor electromagnetic system, wherein an upper armature and a lower armature are respectively connected with two ends of an iron core and are positioned at two axial sides of a coil assembly; the upper end of the magnetic conduction plate and the lower end of the magnetic conduction plate are respectively in limit fit with the framework upper baffle plate and the framework lower baffle plate through an upper limit structure and a lower limit structure, and the upper limit structure and the lower limit structure limit the movement of the magnetic conduction plate in the axial direction and the radial direction of the coil assembly; the permanent magnet type direct current operation contactor electromagnetic system is reliable and stable in structure and easy to install.

Description

Permanent magnet type direct current operation contactor electromagnetic system

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a permanent magnet type direct current operation contactor electromagnetic system.

Background

The permanent magnet of the electromagnetic system of the permanent magnet direct current operation contactor, when the coil winding is not electrified or the electrified voltage is insufficient, the magnetic field of the permanent magnet is dominant, the magnetic conduction plate is magnetized, the magnetic conduction plate adsorbs the lower armature connected with the iron core, so that the contactor is kept in an open state, when the coil winding is electrified and the electrified voltage is large enough, the electromagnetic field of the coil winding is dominant, and the magnetic yoke adsorbs the upper armature connected with the iron core to drive the iron core to move, so that the contactor is closed; existing electromagnetic systems suffer from several drawbacks, such as:

1. the limit of the magnetic conduction plate is insufficient, displacement is easy to occur in the installation process, the installation efficiency is affected, the magnetic conduction plate is misplaced, and even the action performance of an electromagnetic system is affected.

2. The lack of an explicit indication of the installation position of the permanent magnet, which is installed according to the experience of an installer, results in poor uniformity; and the permanent magnet lacks a reliable limiting structure, so that the permanent magnet is possibly shifted due to jolt in the transportation process of the electromagnetic system, and the action performance of the electromagnetic system is affected.

3. The wiring board of the coil assembly is not easy to install and has poor reliability.

Disclosure of Invention

The utility model aims to overcome at least one defect of the prior art and provide a permanent magnet type direct current operation contactor electromagnetic system which is reliable and stable in structure and easy to install.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a permanent magnet type direct current operation contactor electromagnetic system comprises a coil assembly, an iron core, a magnetic yoke, a permanent magnet, a magnetic conduction plate, an upper armature and a lower armature which are respectively connected with two ends of the iron core and are positioned on two axial sides of the coil assembly; the coil assembly comprises a coil framework and coil windings, the coil framework comprises a framework main body, framework upper baffles and framework lower baffles are respectively arranged at two ends of the framework main body, the coil windings are sleeved on the framework main body, an iron core is inserted in the middle of the coil framework in a sliding mode, magnetic yoke main boards of two groups of magnetic yokes are located at two radial sides of the coil assembly, two magnetic conducting boards are respectively arranged between the two magnetic yoke main boards and the coil windings, and permanent magnets are arranged between the magnetic yoke main boards and the magnetic conducting boards; each magnetic conduction plate comprises a magnetic conduction plate upper end which is in limit fit with the upper baffle plate of the framework through an upper limit structure and a magnetic conduction plate lower end which is in limit fit with the lower baffle plate of the framework through a lower limit structure, and the upper limit structure and the lower limit structure limit the magnetic conduction plate to move in the axial direction and the radial direction of the coil assembly.

Further, the magnetic conduction plate is arranged between the framework upper baffle plate and the framework lower baffle plate, and the framework upper baffle plate and the framework lower baffle plate limit the magnetic conduction plate in the axial direction of the coil assembly.

Further, the upper limit structure comprises an upper clamping table, an upper baffle table and an upper baffle surface which are respectively arranged on the upper baffle plate of the framework, and an upper clamping foot and an upper clamping groove which are respectively arranged on the upper end of the magnetic conduction plate; the upper clamping tables are positioned between the upper blocking surfaces and the corresponding magnetic yoke main boards, and the upper blocking tables are arranged between the upper clamping tables and the upper blocking surfaces and positioned between the two upper clamping tables; the upper end clamping groove is formed between the two upper end clamping pins; the upper end clamping pins are matched with the upper clamping tables one to one, the upper end clamping pins are clamped between the upper clamping tables and the upper blocking surfaces, and the magnetic conduction plates are limited to move between the coil assembly and the corresponding magnetic yoke main boards along the radial direction of the coil winding; the upper baffle plate is clamped in the upper end clamping groove and is respectively in limit fit with the two upper end clamping pins, so that the magnetic guide plate is limited to move along the radial direction of the coil assembly on the plane where the magnetic guide plate is located.

Further, the upper limit structure further comprises upper blocking arms, the two upper blocking arms are arranged side by side at intervals, one end of each upper blocking arm is connected with the upper blocking surface, and the other end of each upper blocking arm is provided with an upper clamping table; the free end of the upper end clamping pin is abutted against the upper blocking arm.

Further, the upper clamping table comprises an upper clamping table guide inclined surface which is arranged on the upper clamping table guide inclined surface and faces the corresponding magnetic yoke main board, and the upper clamping table guide inclined surface gradually inclines towards the side where the framework lower baffle is located from one end, close to the corresponding magnetic yoke main board, of the upper clamping table to one end, close to the framework main body.

Further, the lower limiting structure comprises a lower clamping table, a lower bayonet and a lower blocking surface which are respectively arranged on the lower baffle plate of the framework, and a lower end clamping table which is arranged on the lower end of the magnetic conduction plate; the lower clamping tables are positioned between the lower blocking surface and the corresponding magnetic yoke main board, and the lower bayonet is formed between the two lower clamping tables; the two sides of the lower end clamping table are respectively provided with a lower end clamping shoulder, the lower end clamping table is inserted into the lower bayonet, and the movement of the magnetic guide plate on the plane where the magnetic guide plate is positioned along the radial direction of the coil assembly is limited; the lower end clamping shoulder is clamped between the lower blocking surface and the lower clamping table, and the magnetic conduction plate is limited to move between the coil assembly and the corresponding magnetic yoke main plate along the radial direction of the coil assembly.

Further, the lower limiting structure comprises lower blocking arms, two lower blocking arms are arranged side by side at intervals, one end of each lower blocking arm is connected with a lower blocking surface, the other end of each lower blocking arm is provided with a lower clamping table, and a lower bayonet is formed between the two lower blocking arms; the lower end clamping shoulder is propped against the lower blocking arm.

Further, the lower clamping table comprises a lower clamping table guide inclined surface which is arranged on the lower clamping table and faces the corresponding magnetic yoke main board, and the lower clamping table guide inclined surface gradually inclines towards the upper baffle of the framework from one end of the lower clamping table, which is close to the corresponding magnetic yoke main board, to one end, which is close to the framework main body.

Further, the magnetic yoke is of a U-shaped structure and comprises a magnetic yoke main board, a magnetic yoke upper side board and a magnetic yoke lower side board, wherein the magnetic yoke upper side board and the magnetic yoke lower side board are oppositely arranged and respectively connected with two ends of the magnetic yoke main board in a bending way; the openings of the U-shaped structures of the two groups of magnetic yokes relatively enclose a square frame-shaped space, and the coil assembly, the magnetic conduction plate and the permanent magnet are assembled in the square frame-shaped space.

Further, the framework upper baffle plate further comprises two groups of upper baffle plate positioning tables which are positioned at two radial sides of the iron core and between the two groups of magnetic yoke upper side plates, and the two groups of magnetic yoke upper side plates are respectively propped against the two groups of upper baffle plate positioning tables; the framework lower baffle plate further comprises two groups of lower baffle plate positioning tables which are positioned on the two radial sides of the iron core and between the two groups of magnetic yoke lower side plates, and the two groups of magnetic yoke lower side plates are respectively propped against the two groups of lower baffle plate positioning tables.

Further, the N pole and the S pole of the permanent magnet are respectively clung to the corresponding magnetic conduction plate and the magnetic yoke main plate.

Further, the iron core slides in the middle of the coil skeleton to switch between a first working position and a second working position; when the iron core is positioned at the first working position, the lower armature iron is attracted with the lower end of the magnetic conduction plate; when the iron core is positioned at the second working position, the upper armature iron is attracted with the magnetic yoke.

Further, the electromagnetic system of the permanent magnet direct current operation contactor further comprises an insulating sheet arranged between the lower armature and the magnetic yoke, and the insulating sheet is provided with an insulating sheet avoiding hole for avoiding the iron core.

Further, a plurality of magnetic conduction board bulges are arranged on one side of the magnetic conduction board, which faces to the corresponding magnetic yoke bottom plate, and the plurality of magnetic conduction board bulges enclose a permanent magnet installation position for accommodating a permanent magnet.

Further, the coil assembly further comprises a first wiring board and a second wiring board, the first wiring board and the second wiring board are of symmetrical structures, each of the first wiring board and the second wiring board comprises an inner connecting board, a transition board and an outer connecting board which are sequentially connected, and at least one wiring board clamping protrusion is arranged on the transition board; the framework upper baffle comprises two wiring board mounting grooves which are symmetrically arranged, two transition boards are respectively embedded in the two wiring board mounting grooves, an upper baffle clamping hole is formed in one side wall of each wiring board mounting groove, and wiring board clamping protrusions are clamped in the upper baffle clamping holes.

According to the electromagnetic system of the permanent magnet direct current operation contactor, the upper end of the magnetic conduction plate is in limit fit with the upper baffle plate of the framework through the upper limit structure, the lower end of the magnetic conduction plate is in limit fit with the lower baffle plate of the framework through the lower limit structure, the magnetic conduction plate is limited to move in the axial direction and the radial direction of the coil assembly, reliable and stable installation between the magnetic conduction plate and the coil framework is realized, and the situation that the magnetic conduction plate is displaced or repeatedly pulled to separate from the coil framework due to magnetic attraction of the permanent magnet when other parts such as the permanent magnet and the magnetic yoke are installed is avoided, so that the assembly efficiency is affected, and the installation dislocation of the magnetic conduction plate is possibly caused, and the action performance of the electromagnetic system is affected.

In addition, the protruding permanent magnet installation position that is used for holding the permanent magnet that encloses of magnetic conduction board, realized the accurate location and the reliable spacing of permanent magnet, improved electromagnetic system's installation effectiveness and homogeneity, guaranteed electromagnetic system's action performance.

In addition, the first wiring board and the second wiring board are convenient for wiring the coil winding, and the first wiring board and the second wiring board are reliable in installation and simple and convenient in installation.

Drawings

FIG. 1 is a schematic cross-sectional view of an electromagnetic system of a permanent magnet DC operated contactor according to the present utility model;

FIG. 2 is a schematic perspective view of the electromagnetic system of the permanent magnet DC operated contactor of the present utility model in one view;

FIG. 3 is an enlarged schematic view of the portion A of FIG. 2 in accordance with the present utility model;

FIG. 4 is an enlarged schematic view of the portion B of FIG. 2 in accordance with the present utility model;

FIG. 5 is a schematic perspective view of the electromagnetic system of the permanent magnet DC operated contactor of the present utility model in another view;

FIG. 6 is an enlarged schematic view of the structure of portion C of FIG. 5 in accordance with the present utility model;

FIG. 7 is an enlarged schematic view of the portion D of FIG. 5 according to the present utility model;

FIG. 8 is a schematic diagram of the structure of a magnetically permeable plate of the present utility model;

FIG. 9 is a schematic structural view of the electromagnetic system of the permanent magnet DC operated contactor of the present utility model, showing the mating relationship of the yoke upper side plate and the upper baffle positioning table, and the assembly relationship of the first wiring board, the second wiring board and the frame upper baffle;

fig. 10 is a schematic structural view of the electromagnetic system of the permanent magnet type dc operation contactor of the present utility model, showing the matching relationship between the yoke lower side plate and the lower baffle positioning table.

Reference numerals illustrate:

1, a coil framework; 1-0 a framework upper baffle; 1-00 clamping tables; 1-01 upper baffle; 1-02 upper baffle surface; 1-03 upper baffle arm; 1-04 upper baffle positioning table; 1-1 a framework lower baffle; 1-10 lower clamping tables; 1-11 lower clamping grooves; 1-12 lower baffle surfaces; 1-13 lower baffle arms; 1-14 lower baffle positioning table; 1-2 a skeleton main body; 2, an iron core; 3, an armature is arranged on the upper part; a 4 magnetic yoke; 5 permanent magnets; 6, a magnetic conduction plate; 6-0, the upper end of the magnetic conduction plate; 6-01 upper end clamping pins; 6-02 upper clamping groove; 6-1, the lower end of the magnetic conduction plate; 6-10 lower end clamping tables; 6-11 lower end clamping shoulders; 6-2, protruding the magnetic conduction plate; 7 coil windings; 8, lower armature; 9 insulating sheets; 10, a limiting structure; 11 lower limit structure; 12 a first patch panel; 12-0 of an outer connecting plate; 12-1 transition plates; 12-2 connecting plates; and 13 a second wiring board.

Detailed Description

Specific embodiments of the permanent magnet dc operated contactor electromagnetic system of the present utility model are further described below with reference to the examples shown in the drawings. The permanent magnet dc operated contactor electromagnetic system of the present utility model is not limited to the description of the following embodiments.

1-2, an embodiment of a permanent magnet type direct current operation contactor electromagnetic system of the utility model comprises a coil assembly, an iron core 2, a magnetic yoke 4, a permanent magnet 5, a magnetic conduction plate 6, and an upper armature 3 and a lower armature 8 which are respectively connected with two ends of the iron core 2 and are positioned on two axial sides of the coil assembly; the coil assembly comprises a coil framework 1 and coil windings 7, wherein the coil framework 1 comprises a framework main body 1-2, and a framework upper baffle 1-0 and a framework lower baffle 1-1 which are respectively arranged at two ends of the framework main body 1-2, the coil windings 7 are sleeved on the framework main body 1-2, an iron core 2 is slidably inserted in the middle of the coil framework 1, two magnetic yoke main boards of two magnetic yokes 4 are positioned at two radial sides of the coil assembly, two magnetic conduction boards 6 are respectively arranged between the two magnetic yoke main boards and the coil windings 7, namely, a group of magnetic conduction boards 6 are respectively arranged between each magnetic yoke main board and the coil windings 7, and permanent magnets 5 are respectively arranged between the magnetic yoke main boards and the magnetic conduction boards 6, namely, a group of permanent magnets 5 are respectively arranged between each magnetic yoke main board and the corresponding magnetic conduction boards 6; each magnetic conduction plate 6 comprises a magnetic conduction plate upper end 6-0 in limit fit with the framework upper baffle plate 1-0 through an upper limit structure 10 and a magnetic conduction plate lower end 6-1 in limit fit with the framework lower baffle plate 1-0 through a lower limit structure 11, and the upper limit structure 10 and the lower limit structure 11 limit the movement of the magnetic conduction plate 6 in the axial direction and the radial direction of the coil assembly.

According to the permanent magnet type direct current operation contactor electromagnetic system, the upper end 6-0 of the magnetic conduction plate is in limit fit with the upper baffle plate 1-0 of the framework through the upper limit structure 10, the lower end 6-1 of the magnetic conduction plate is in limit fit with the lower baffle plate 1-1 of the framework through the lower limit structure 11, movement of the magnetic conduction plate 6 in the axial direction and the radial direction of the coil assembly is limited, reliable and stable installation between the magnetic conduction plate 6 and the coil framework 1 is achieved, and the situation that the magnetic conduction plate 6 is displaced or repeatedly pulled to be separated from the coil framework 1 due to magnetic attraction of the permanent magnet 5 when other parts such as the permanent magnet 5 and the magnetic yoke 4 are installed is avoided, so that the assembly efficiency is affected, and installation dislocation of the magnetic conduction plate 6 possibly occurs, and the action performance of the electromagnetic system is affected.

The iron core 2 has a first working position and a second working position, and the iron core 2 slides in the axial direction of the coil assembly in the coil skeleton 1 to switch between the two working positions; as shown in fig. 1, when the iron core 2 is located at the first working position, due to the magnetic field of the permanent magnet 5, the lower armature 8 is attracted to the lower end 6-1 of the magnetic conductive plate 6; when the iron core 2 is located at the second working position, the upper armature 3 is attracted with the magnetic yoke 4. Specifically, after the coil 7 is energized, the electromagnetic field generated by the coil 7 is opposite to the magnetic field of the permanent magnet 5, and when the electromagnetic field generated by the coil 7 is larger than the magnetic field of the permanent magnet 5 and is large enough, the lower armature 3 is attracted by the yoke upper side plate of the yoke 4, so that the iron core 2 slides in the coil skeleton 1 to be switched from the first working position to the second working position, and the iron core 2 drives the movable contact of the contactor to act, thereby changing the conducting state of the contactor.

As shown in fig. 1, the yoke 4 has a U-shaped structure, and includes a yoke main board, a yoke upper side board and a yoke lower side board, where the yoke upper side board and the yoke lower side board are oppositely arranged and respectively connected with two ends of the yoke main board in a bending manner; the openings of the U-shaped structures of the two groups of magnetic yokes 4 relatively enclose a square frame-shaped space, and the coil assembly, the conductive plates 6 and the permanent magnets 5 are all assembled in the square frame-shaped space. Further, the upper side plate of the magnetic yoke is positioned between the coil framework 1 and the upper armature 3, and the lower side plate of the magnetic yoke and the coil framework 1 are positioned on two sides of the lower side plate of the magnetic yoke. Further, as shown in fig. 9, the skeleton upper baffle 1-0 includes two sets of upper baffle positioning tables 1-04 located at two radial sides of the iron core 2 and located between two sets of yoke upper side plates, where the two sets of yoke upper side plates respectively abut against the two sets of upper baffle positioning tables 1-04; the framework lower baffle plate 1-1 comprises two groups of lower baffle plate positioning tables 1-14 which are positioned on two radial sides of the iron core 2 and positioned between two groups of magnetic yoke lower side plates, and the two groups of magnetic yoke lower side plates are respectively propped against the two groups of lower baffle plate positioning tables 1-14; the positioning efficiency of the two groups of magnet yokes 4 during installation is obviously improved, and the two magnet yokes are ensured to be installed in place.

As shown in fig. 1, the magnetic conductive plate 6 is disposed parallel to the yoke main plate.

As shown in fig. 1, the electromagnetic system of the permanent magnet type direct current operation contactor of the utility model further comprises an insulating sheet 9 arranged between the lower armature 8 and the magnetic yoke 4, wherein the insulating sheet 9 is provided with an insulating sheet avoiding hole for avoiding the iron core 2, so that the iron core 2 can pass through the insulating sheet avoiding hole to output driving force outwards. Further, the insulating sheet 9 is provided between the yoke lower side plate and the lower armature 8.

As shown in fig. 1-3, 5-6, 8, is one embodiment of the upper limit structure 10.

The upper limit structure 10 comprises an upper clamping table 1-00, an upper blocking table 1-01 and an upper blocking surface 1-02 which are respectively arranged on the upper baffle plate 1-0 of the framework, and an upper clamping foot 6-01 and an upper clamping groove 6-02 which are respectively arranged on the upper end 6-0 of the magnetic conduction plate; as shown in fig. 2-3 and 5-6, the upper clamping table 1-00 is located between the upper blocking surface 1-02 and the corresponding magnetic yoke main plate, and the upper blocking table 1-01 is arranged between the upper clamping table 1-00 and the upper blocking surface 1-02 and is located between the two upper clamping tables 1-00; as shown in fig. 2 and 8, the upper end clamping groove 6-02 is formed between the two upper end clamping legs 6-01; the upper end clamping pins 6-01 are matched with the upper clamping tables 1-00 one to one, the upper end clamping pins 6-01 are clamped between the upper clamping tables 1-00 and the upper blocking surfaces 1-02, and movement of the magnetic conduction plates 6 between the coil assembly and the corresponding magnetic yoke main boards in the radial direction of the coil winding is limited; the upper baffle table 1-01 is clamped in the upper end clamping groove 6-02 and is respectively in limit fit with the two upper end clamping pins 6-01, so that the magnetic conduction plate 6 is limited to move along the radial direction of the coil assembly on the plane where the magnetic conduction plate is located. Further, the upper baffle surface 1-02 is parallel to the axial direction of the coil assembly; the "radial movement of the magnetic conductive plate 6 along the coil assembly on the plane thereof" is that the magnetic conductive plate 6 translates relative to the corresponding yoke main plate.

As shown in fig. 2 and 5-6, the upper limit structure 10 further includes an upper blocking arm 1-03, two upper blocking arms 1-03 are arranged side by side at intervals, one end of each upper blocking arm 1-03 is connected with the upper blocking surface 1-02, the other end is provided with an upper clamping table 1-00, and the upper clamping table 1-00 is arranged on one side of the upper blocking arm 1-03 facing the framework lower baffle 1-1; the free end of the upper end clamping pin 6-01 is abutted against the upper baffle arm 1-03 to limit the magnetic conduction plate 6 to move in the axial direction of the coil assembly in the direction away from the lower baffle plate 1-1 of the framework.

As shown in fig. 2-3 and 5-6, the upper clamping table 1-00 includes an upper clamping table guiding inclined plane disposed on the upper clamping table guiding inclined plane facing the corresponding magnetic yoke main board, and the upper clamping table guiding inclined plane gradually inclines towards the side of the lower baffle 1-1 of the framework from one end of the upper clamping table guiding inclined plane, which is close to the corresponding magnetic yoke main board, to one end of the upper clamping table guiding inclined plane, which is close to the framework main board 1-2, so that the upper clamping pin 6-01 is conveniently clamped between the upper clamping table 1-00 and the upper baffle surface 1-02. Further, the upper clamping table guiding inclined plane gradually inclines downwards (i.e. gradually inclines towards the side where the lower baffle plate 1-1 of the framework is located) from the outer end (i.e. the end of the upper clamping table guiding inclined plane far away from the framework main body 1-2 as shown in fig. 1) to the inner end (i.e. the end of the upper clamping table guiding inclined plane near the framework main body 1-2 as shown in fig. 1).

It should be noted that the number of the upper clamping table 1-00, the upper blocking table 1-01 and the upper blocking arms 1-13 can be adjusted according to actual needs and design requirements, and the structure of the upper end 6-0 of the magnetic conduction plate is also required to be correspondingly adjusted.

As other embodiments, the upper limit structure 10 may not be provided with the upper clamping table 1-00, but be provided with an upper clamping groove, and the upper clamping leg 6-01 may be clamped in the upper clamping groove, which may also play the same role. Further, the upper stage 1-02 may be omitted.

As shown in fig. 1-2, 4-5, 7-8, is an embodiment of the lower limit structure 11.

The lower limit structure 11 comprises a lower clamping table 1-10, a lower clamping groove 1-11 and a lower blocking surface 1-12 which are respectively arranged on the lower baffle plate 1-1 of the framework, and a lower end clamping table 6-10 arranged on the lower end 6-1 of the magnetic conduction plate; as shown in fig. 2, 4-5 and 7, the lower clamping tables 1-10 are positioned between the lower blocking surface 1-12 and the corresponding magnetic yoke main plate, and the lower clamping grooves 1-11 are formed between the two lower clamping tables 1-10; as shown in fig. 2 and 8, two sides of the lower end clamping table 6-10 are respectively formed with a lower end clamping shoulder 6-11, and the two lower end clamping shoulders 6-11 are two step structures formed on one side of the lower end clamping table 6-10, wherein the lower end clamping table 6-10 is inserted into the lower bayonet 1-11 to limit the movement of the magnetic conduction plate 6 along the radial direction of the coil assembly on the plane where the magnetic conduction plate is located; the lower end clamping shoulder 6-11 is clamped between the lower blocking surface 1-12 and the lower clamping table 1-10, and the magnetic conduction plate 6 is limited to move between the coil assembly and the corresponding magnetic yoke main plate in the radial direction of the coil assembly. Further, the lower blocking surfaces 1-12 are parallel to the axial direction of the coil assembly; the "movement of the magnetic conductive plate 6 along the radial direction of the coil assembly on the plane thereof" refers to the translational movement of the magnetic conductive plate 6 relative to the corresponding yoke main plate.

As shown in fig. 2, 5 and 7, the lower limit structure 11 includes lower blocking arms 1-13, two lower blocking arms 1-13 are arranged side by side at intervals, one end of each lower blocking arm 1-13 is connected with the lower blocking surface 1-12, the other end (i.e. the end of the lower blocking arm 1-13 close to the main board of the magnetic yoke) is provided with a lower clamping table 1-10, the lower clamping table 1-10 is arranged at one side of the lower blocking arm 1-13 facing the upper baffle 1-0 of the framework, and a lower bayonet 1-11 is formed between the two lower blocking arms 1-13; the lower end clamping shoulders 6-11 respectively abut against the lower baffle arms 1-13 to limit the magnetic conduction plate 6 to move in the axial direction of the coil assembly in the direction away from the upper baffle plate 1-0 of the framework. And two ends of the magnetic conduction plate 6 are respectively propped against the upper blocking arm 1-03 and the lower blocking arm 1-13 to limit the movement of the magnetic conduction plate 6 in the axial direction of the coil assembly.

As shown in fig. 4 and 7, the lower clamping table 1-10 includes a lower clamping table guiding inclined plane disposed on the lower clamping table guiding inclined plane facing the corresponding yoke plate, and the lower clamping table guiding inclined plane gradually inclines from one end of the lower clamping table guiding inclined plane near the corresponding yoke main plate to one end near the skeleton main body 1-2 towards the skeleton upper baffle 1-0, so that the lower clamping shoulder 6-11 is clamped between the lower clamping table 1-10 and the lower blocking surface 1-12. Further, the lower clamping table guiding inclined plane gradually inclines upwards (i.e. gradually inclines towards the side where the upper baffle plate 1-0 of the framework is located) from the outer end (i.e. the end of the lower clamping table guiding inclined plane far away from the framework main body 1-2 as shown in fig. 1) to the inner end (i.e. the end of the lower clamping table guiding inclined plane near to the framework main body 1-2 as shown in fig. 1).

It should be noted that the number of the lower clamping tables 1-10 and the number of the lower blocking arms 1-13 can be adjusted according to actual needs and design requirements, and the structure of the lower end 6-1 of the magnetic conduction plate also needs to be correspondingly adjusted.

As other embodiments, the lower limiting structure 11 may not be provided with the lower clamping platform 1-10, but be provided with the lower clamping groove on the lower blocking arm 1-13, and two sides of the lower clamping platform 6-10 are provided with clamping platforms or clamping ribs respectively clamped into the lower clamping groove, which can play the same role.

Referring to fig. 2-8, when the electromagnetic system of the permanent magnet direct current operation contactor of the utility model is installed, the upper clamping groove 6-02 corresponds to the upper blocking table 1-01, the lower clamping table 6-10 corresponds to the lower clamping groove 1-11, the upper clamping feet 6-01 respectively correspond to the two upper clamping tables 1-00, the two lower clamping shoulders 6-11 on two sides of the lower clamping table 6-10 respectively correspond to the two lower clamping tables 1-10, then the magnetic conduction plate 6 is pushed to the coil winding 7, the upper blocking arm 1-03 and/or the upper clamping table 1-00 are elastically deformed, the lower blocking arm 1-13 and/or the lower clamping table 1-10 are elastically deformed, so that the upper clamping feet 6-01 are pressed between the upper clamping table 1-00 and the upper blocking surface 1-02, the upper blocking table 1-01 enters the upper clamping groove 6-02, the lower clamping feet 6-10 enter the lower clamping groove 1-11, and the two lower clamping shoulders 6-11 respectively enter between the lower blocking table 1-10 and the lower blocking table 1-12.

As shown in fig. 2 and 8, the magnetic conductive plate 6 further includes a plurality of magnetic conductive plate protrusions 6-2 disposed on a side thereof facing the corresponding magnetic yoke base plate, and the plurality of magnetic conductive plate protrusions 6-2 enclose a permanent magnet mounting position for accommodating the permanent magnet 5, thereby realizing accurate positioning and reliable limiting of the permanent magnet 5, improving the mounting efficiency and uniformity of the electromagnetic system of the present utility model, and ensuring the action performance of the electromagnetic system of the present utility model.

As shown in fig. 9-10, the coil assembly further includes a first wiring board 12 and a second wiring board 13, where the first wiring board 12 and the second wiring board 13 are symmetrical to each other, each including an inner connection board 12-2, a transition board 12-1 and an outer connection board 12-0, which are sequentially connected, the two inner connection boards 12-2 are respectively electrically connected and connected with two ends of the coil winding 7, the two outer connection boards 12-0 are used for connecting with an external circuit to access driving current of the electromagnetic system, and at least one wiring board locking protrusion 12-10 is provided on the transition board 12-1; the framework upper baffle plate 1-0 further comprises two symmetrically arranged wiring board mounting grooves 1-05, two transition boards 12-1 are respectively embedded in the two wiring board mounting grooves 1-05, an upper baffle plate 1-06 is arranged on one side wall of the wiring board mounting groove 1-05, and wiring board clamping protrusions 12-10 are clamped in the upper baffle plate clamping holes 1-06; the inner connecting plate 12-2 is used for being electrically connected with the coil winding 7, and the connection is convenient and reliable; the transition plate 12-1 is matched with the wiring board mounting groove 1-05, so that the mounting efficiency of the first wiring board 12 and the second wiring board 13 is improved, and the mounting reliability of the first wiring board and the second wiring board is ensured. Further, the first wiring board 12 and the second wiring board 13 are both in a zigzag structure. Further, the wiring board mounting grooves 1-05 are respectively provided with two upper baffle clamping holes 1-06 which are arranged side by side at intervals along the extending direction of the transition plate 12-1.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (15)

1. The electromagnetic system of the permanent magnet direct current operation contactor comprises a coil assembly, an iron core (2), a magnetic yoke (4), a permanent magnet (5), a magnetic conduction plate (6), and an upper armature (3) and a lower armature (8) which are respectively connected with two ends of the iron core (2) and are positioned on two axial sides of the coil assembly; the coil assembly comprises a coil framework (1) and coil windings (7), wherein the coil framework (1) comprises a framework main body (1-2) and framework upper baffles (1-0) and framework lower baffles (1-1) which are respectively arranged at two ends of the framework main body (1-2), the coil windings (7) are sleeved on the framework main body (1-2), an iron core (2) is slidably inserted in the middle of the coil framework (1), magnetic yoke main boards of two groups of magnetic yokes (4) are positioned at two radial sides of the coil assembly, two magnetic conduction boards (6) are respectively arranged between the two magnetic yoke main boards and the coil windings (7), and permanent magnets (5) are arranged between the magnetic yoke main boards and the magnetic conduction boards (6); the method is characterized in that: each magnetic conduction plate (6) comprises a magnetic conduction plate upper end (6-0) in limit fit with the framework upper baffle plate (1-0) through an upper limit structure (10) and a magnetic conduction plate lower end (6-1) in limit fit with the framework lower baffle plate (1-1) through a lower limit structure (11), and the upper limit structure (10) and the lower limit structure (11) limit the magnetic conduction plate (6) to move in the axial direction and the radial direction of the coil assembly.

2. The permanent magnet dc operated contactor electromagnetic system according to claim 1, wherein: the magnetic conduction plate (6) is arranged between the framework upper baffle plate (1-0) and the framework lower baffle plate (1-1), and the framework upper baffle plate (1-0) and the framework lower baffle plate (1-1) limit the magnetic conduction plate (6) in the axial direction of the coil assembly.

3. The permanent magnet direct current operated contactor electromagnetic system according to claim 2, wherein: the upper limit structure (10) comprises an upper clamping table (1-00), an upper blocking table (1-01) and an upper blocking surface (1-02) which are respectively arranged on the upper baffle plate (1-0) of the framework, and an upper end clamping pin (6-01) and an upper end clamping groove (6-02) which are respectively arranged on the upper end (6-0) of the magnetic conduction plate; the upper clamping table (1-00) is positioned between the upper blocking surface (1-02) and the corresponding magnetic yoke main board, and the upper blocking table (1-01) is arranged between the upper clamping table (1-00) and the upper blocking surface (1-02) and is positioned between the two upper clamping tables (1-00); the upper end clamping groove (6-02) is formed between the two upper end clamping pins (6-01); the upper end clamping pins (6-01) are matched with the upper clamping tables (1-00) one by one, the upper end clamping pins (6-01) are clamped between the upper clamping tables (1-00) and the upper blocking surfaces (1-02), and movement of the magnetic conduction plates (6) between the coil assembly and the corresponding magnetic yoke main boards in the radial direction of the coil winding is limited; the upper baffle table (1-01) is clamped in the upper end clamping groove (6-02) and is respectively in limit fit with the two upper end clamping pins (6-01), so that the magnetic guide plate (6) is limited to move along the radial direction of the coil assembly on the plane where the magnetic guide plate is located.

4. A permanent magnet direct current operated contactor electromagnetic system according to claim 3, wherein: the upper limit structure (10) further comprises upper blocking arms (1-03), the two upper blocking arms (1-03) are arranged side by side at intervals, one end of each upper blocking arm (1-03) is connected with the upper blocking surface (1-02), and the other end of each upper blocking arm is provided with an upper clamping table (1-00); the free end of the upper end clamping pin (6-01) is abutted against the upper blocking arm (1-03).

5. A permanent magnet direct current operated contactor electromagnetic system according to claim 3, wherein: the upper clamping table (1-00) comprises an upper clamping table guide inclined surface which is arranged on the upper clamping table guide inclined surface facing the corresponding magnetic yoke main board, and the upper clamping table guide inclined surface gradually inclines towards the side where the framework lower baffle (1-1) is located from one end of the upper clamping table guide inclined surface, which is close to the corresponding magnetic yoke main board, to one end, which is close to the framework main body (1-2).

6. The permanent magnet direct current operated contactor electromagnetic system according to claim 2, wherein: the lower limit structure (11) comprises a lower clamping table (1-10), a lower bayonet (1-11) and a lower blocking surface (1-12) which are respectively arranged on the lower baffle plate (1-1) of the framework, and a lower end clamping table (6-10) arranged on the lower end (6-1) of the magnetic conduction plate; the lower clamping tables (1-10) are positioned between the lower blocking surfaces (1-12) and the corresponding magnetic yoke main boards, and the lower clamping openings (1-11) are formed between the two lower clamping tables (1-10); the two sides of the lower end clamping table (6-10) are respectively provided with a lower end clamping shoulder (6-11), the lower end clamping table (6-10) is inserted into the lower bayonet (1-11), and the movement of the magnetic guide plate (6) on the plane of the magnetic guide plate along the radial direction of the coil assembly is limited; the lower end clamping shoulder (6-11) is clamped between the lower blocking surface (1-12) and the lower clamping table (1-10) to limit the movement of the magnetic conduction plate (6) between the coil assembly and the corresponding magnetic yoke main plate in the radial direction of the coil assembly.

7. The permanent magnet dc operated contactor electromagnetic system according to claim 6, wherein: the lower limiting structure (11) comprises lower blocking arms (1-13), the two lower blocking arms (1-13) are arranged at intervals side by side, one end of each lower blocking arm (1-13) is connected with a lower blocking surface (1-12), the other end of each lower blocking arm is provided with a lower clamping table (1-10), and a lower bayonet (1-11) is formed between the two lower blocking arms (1-13); the lower end clamping shoulder (6-11) is propped against the lower baffle arm (1-13).

8. The permanent magnet dc operated contactor electromagnetic system according to claim 6, wherein: the lower clamping table (1-10) comprises a lower clamping table guide inclined surface which is arranged on the lower clamping table and faces the corresponding magnetic yoke main board, and one end, close to the corresponding magnetic yoke main board, of the lower clamping table guide inclined surface gradually inclines towards the upper baffle plate (1-0) of the framework from one end, close to the framework main body (1-2), of the lower clamping table.

9. The permanent magnet dc operated contactor electromagnetic system according to claim 1, wherein: the magnetic yoke (4) is of a U-shaped structure and comprises a magnetic yoke main board, a magnetic yoke upper side board and a magnetic yoke lower side board, wherein the magnetic yoke upper side board and the magnetic yoke lower side board are oppositely arranged and respectively connected with two ends of the magnetic yoke main board in a bending way; the openings of the U-shaped structures of the two groups of magnetic yokes (4) relatively enclose a square frame-shaped space, and the coil assembly, the magnetic conduction plate (6) and the permanent magnet (5) are assembled in the square frame-shaped space.

10. The permanent magnet dc operated contactor electromagnetic system according to claim 9, wherein: the framework upper baffle plate (1-0) further comprises two groups of upper baffle plate positioning tables (1-04) which are positioned on two radial sides of the iron core (2) and positioned between the two groups of magnetic yoke upper side plates, and the two groups of magnetic yoke upper side plates are respectively propped against the two groups of upper baffle plate positioning tables (1-04); the framework lower baffle plate (1-1) further comprises two groups of lower baffle plate positioning tables (1-14) which are positioned on the two radial sides of the iron core (2) and between the two groups of magnetic yoke lower side plates, and the two groups of magnetic yoke lower side plates are respectively propped against the two groups of lower baffle plate positioning tables (1-14).

11. The permanent magnet dc operated contactor electromagnetic system according to claim 1, wherein: the N pole and the S pole of the permanent magnet (5) are respectively clung to the corresponding magnetic conduction plate (6) and the magnetic yoke main plate.

12. The permanent magnet dc operated contactor electromagnetic system according to claim 1, wherein: the iron core (2) slides in the middle of the coil skeleton (1) to switch between a first working position and a second working position; when the iron core (2) is positioned at the first working position, the lower armature (8) is attracted with the lower end (6-1) of the magnetic conduction plate (6); when the iron core (2) is positioned at the second working position, the upper armature (3) is attracted with the magnetic yoke (4).

13. The permanent magnet dc operated contactor electromagnetic system according to claim 1, wherein: the electromagnetic system of the permanent magnet direct current operation contactor further comprises an insulating sheet (9) arranged between the lower armature (8) and the magnetic yoke (4), and the insulating sheet (9) is provided with an insulating sheet avoiding hole for avoiding the iron core (2).

14. The permanent magnet dc operated contactor electromagnetic system according to claim 1, wherein: and a plurality of magnetic conduction plate bulges (6-2) are arranged on one side of the magnetic conduction plate (6) facing the corresponding magnetic yoke base plate, and the plurality of magnetic conduction plate bulges (6-2) enclose a permanent magnet installation position for accommodating the permanent magnet (5).

15. The permanent magnet dc operated contactor electromagnetic system according to claim 1, wherein: the coil assembly further comprises a first wiring board (12) and a second wiring board (13), wherein the first wiring board (12) and the second wiring board (13) are of symmetrical structures, each of the first wiring board and the second wiring board comprises an inner connecting board (12-2), a transition board (12-1) and an outer connecting board (12-0) which are sequentially connected, and at least one wiring board clamping protrusion (12-10) is arranged on the transition board (12-1); the framework upper baffle plate (1-0) comprises two wiring board mounting grooves (1-05) which are symmetrically arranged, two transition plates (12-1) are respectively embedded in the two wiring board mounting grooves (1-05), an upper baffle plate clamping hole (1-06) is formed in one side wall of the wiring board mounting groove (1-05), and wiring board clamping protrusions (12-10) are clamped in the upper baffle plate clamping holes (1-06).