Contactor yoke and contactor

Abstract

The utility model discloses a contactor yoke and a contactor. The contactor yoke includes: a pair of side plates having an upper pin and a lower pin respectively formed on an upper portion and a lower portion thereof; and the bottom plate is connected between the bottoms of the pair of side plates. The upper pins of the pair of side plates are used for being inserted into upper slots of an upper shell of the contactor, so that the contactor yoke and a magnetic conductive plate of the contactor are fixed to the upper shell together; and the lower pins of the pair of side plates are used for being inserted into lower slots of a lower shell of the contactor so as to fix the contactor yoke to the lower shell. According to the utility model, the contactor yoke is fixed on the upper shell and the lower shell in a buckling manner, so that the fixing process is simplified, the cost is reduced, the production efficiency is improved, and the fixation of the contactor yoke is more reliable.

Description

Technical Field

[0001] The utility model relates to a contactor yoke and a contactor comprising the contactor yoke. Background Art

[0002] In the prior art, a contactor generally includes a housing, a pair of static terminals, a movable terminal, a yoke, a magnetic plate, and a coil assembly. The housing includes an upper housing and a lower housing assembled together. A pair of static terminals are fixed to the top wall of the upper housing and extend into the arc extinguishing chamber of the upper housing. The movable terminal is movably arranged in the arc extinguishing chamber of the upper housing and can move between a closed position in electrical contact with the pair of static terminals and an open position in electrical separation from the pair of static terminals. The yoke and the magnetic plate are arranged in the lower housing to form a magnetic conductive circuit of the contactor. The coil assembly is arranged in the yoke. The coil assembly includes a coil skeleton and a coil wound on the coil skeleton.

[0003] In the prior art, the upper portions of the yoke's pair of side panels are riveted to the magnetic plate using four riveting tabs, securing the yoke and plate together. The yoke's bottom is either glued to the bottom wall of the lower housing using adhesive or left unattached. Existing riveting and adhesive bonding solutions suffer from complex processes, high costs, unreliable fixation, time-consuming and labor-intensive processes, and low production efficiency. Utility Model Content

[0004] The purpose of the present invention is to solve at least one aspect of the above-mentioned problems and defects in the prior art.

[0005] According to one aspect of the present invention, a contactor yoke is provided. The contactor yoke comprises: a pair of side plates, each having an upper snap-fit structure and a lower snap-fit structure formed on its upper and lower portions, respectively; and a base plate connected between the bottoms of the pair of side plates. The upper snap-fit structures of the pair of side plates are configured to snap onto the upper housing of the contactor to secure the contactor yoke and the magnetic conductive plate of the contactor to the upper housing, while the lower snap-fit structures of the pair of side plates are configured to snap onto the lower housing of the contactor to secure the contactor yoke to the lower housing.

[0006] According to an exemplary embodiment of the present utility model, the upper snap-fit structure includes an upper pin, which is used to be plugged into the upper slot of the upper shell of the contactor; the lower snap-fit structure includes a lower pin, which is used to be plugged into the lower slot of the lower shell of the contactor.

[0007] According to another exemplary embodiment of the present invention, the bottom plate extends along a first direction and a second direction perpendicular to each other, and the side plate extends along the first direction and a third direction perpendicular to the first direction and the second direction; the side plate has left and right sides opposite to each other in the first direction, and an upper pin is formed on the left and right sides of the upper part of the side plate, respectively, and a lower pin is formed on the left and right sides of the lower part of the side plate, respectively.

[0008] According to another exemplary embodiment of the present invention, the width of the side panel in the first direction is greater than the width of the bottom panel in the first direction, one end of the bottom panel is located between the two lower pins of one side panel, and the other end of the bottom panel is located between the two lower pins of the other side panel.

[0009] According to another exemplary embodiment of the present invention, an upper barb is formed on the upper pin, and the upper barb is suitable for interference fit with the inner wall of the upper slot of the upper shell to fix the upper pin in the upper slot and prevent the upper pin from being pulled out of the upper slot; and / or a lower barb is formed on the lower pin, and the lower barb is suitable for interference fit with the inner wall of the lower slot of the lower shell to fix the lower pin in the lower slot and prevent the lower pin from being pulled out of the lower slot.

[0010] According to another exemplary embodiment of the present invention, a plurality of upper barbs are formed on the upper pin, and the plurality of upper barbs are spaced apart in the extension direction of the upper pin. And / or a plurality of lower barbs are formed on the lower pin, and the plurality of lower barbs are spaced apart in the extension direction of the lower pin.

[0011] According to another aspect of the present invention, a contactor is provided. The contactor comprises: a housing comprising an upper housing and a lower housing assembled together; the aforementioned contactor yoke disposed in the lower housing; and a magnetic conductive plate disposed in the lower housing and supported on the top surfaces of a pair of side plates of the contactor yoke. The upper snap-fit structure of the contactor yoke snaps onto the upper housing to secure the contactor yoke and the magnetic conductive plate together to the upper housing, and the lower snap-fit structure of the contactor yoke snaps onto the lower housing to secure the contactor yoke to the lower housing.

[0012] According to an exemplary embodiment of the present invention, an upper slot is formed in the upper shell, and the upper pin of the contactor yoke is inserted into the upper slot to fix the contactor yoke and the magnetic conductive plate together to the upper shell; a lower slot is formed in the lower shell, and the lower pin of the contactor yoke is inserted into the lower slot to fix the contactor yoke to the lower shell.

[0013] According to another exemplary embodiment of the present invention, the magnetic conductive plate is opposite to the bottom plate of the contactor yoke, and the two ends of the magnetic conductive plate are respectively supported on the top surfaces of a pair of side plates of the contactor yoke; one end of the magnetic conductive plate is located between the two upper pins of one side plate of the contactor yoke, and the other end of the magnetic conductive plate is located between the two upper pins of the other side plate of the contactor yoke.

[0014] According to another exemplary embodiment of the present invention, the lower portion of the upper shell is inserted into the upper opening of the lower shell, a plurality of protrusions distributed at intervals are formed on the lower peripheral wall of the upper shell, and a plurality of card grooves distributed at intervals are formed on the upper peripheral wall of the lower shell, and the plurality of protrusions are respectively engaged with the plurality of card grooves to fix the upper shell and the lower shell together.

[0015] According to another exemplary embodiment of the present invention, the contactor also includes: a shielding shell, the upper shell is injection molded onto the shielding shell through an embedded injection molding process, so that the shielding shell is embedded in the upper shell, the shielding shell has a lower peripheral wall extending from the lower end of the upper shell, and the lower peripheral wall of the shielding shell is in electrical contact with the peripheral surface of the magnetic conductive plate.

[0016] According to another exemplary embodiment of the present invention, the contactor further includes: a pair of static terminals fixed to the top wall of the upper shell and extending into the arc extinguishing chamber of the upper shell; and a movable terminal movably arranged in the arc extinguishing chamber of the upper shell, capable of moving between a closed position electrically contacting the pair of static terminals and an open position electrically separated from the pair of static terminals.

[0017] According to another exemplary embodiment of the present invention, the contactor further includes: a pair of magnetic blowing magnets embedded in the peripheral wall of the upper shell and adjacent to the pair of static terminals respectively, and the pair of magnetic blowing magnets are suitable for extinguishing the arc between the moving terminal and the static terminal by magnetic blowing.

[0018] According to another exemplary embodiment of the present invention, the contactor further includes: an insulating base located in the arc extinguishing chamber of the upper shell; a contact spring compressed between the movable terminal and the insulating base, for applying contact pressure to the movable terminal; and a limit bracket fixed to the insulating base, for limiting the moving direction and moving distance of the movable terminal relative to the insulating base.

[0019] According to another exemplary embodiment of the present invention, the contactor further includes: a coil assembly, arranged in the contactor yoke, including a coil frame and a coil wound on the coil frame, the bottom of the coil frame is supported on the bottom plate of the contactor yoke, and the magnetic conductive plate is located above the top of the coil frame.

[0020] According to another exemplary embodiment of the present invention, the contactor also includes: a drive shaft, which is arranged in the coil skeleton and whose upper end passes through the magnetic conductive plate and extends into the arc extinguishing chamber, the upper end of the drive shaft is fixed to the insulating base, and the insulating base electrically isolates the upper end of the drive shaft from the contact spring and the limit bracket.

[0021] According to another exemplary embodiment of the present invention, the insulating base is directly injection molded onto the drive shaft and the limiting bracket by insert injection molding, so that the insulating base, the drive shaft and the limiting bracket become an integrated part.

[0022] According to another exemplary embodiment of the present invention, the contactor also includes: a static magnetic core, located in the coil frame and fixed to the magnetic conductive plate; and a dynamic magnetic core, movably arranged in the coil frame and capable of moving along its axial direction, the drive shaft movably passes through the static magnetic core and the dynamic magnetic core, and the lower end of the drive shaft is connected to the dynamic magnetic core to move with the dynamic magnetic core.

[0023] According to another exemplary embodiment of the present invention, the contactor further comprises a return spring mounted on the drive shaft and compressed between the static magnetic core and the moving magnetic core. When the coil is energized, the drive shaft drives the moving terminal from the open position to the closed position under the action of electromagnetic force. When the coil is de-energized, the drive shaft drives the moving terminal from the closed position to the open position under the action of the elastic return force of the return spring.

[0024] According to another exemplary embodiment of the present invention, the contactor further includes: a magnetic cylinder fixed to the lower end of the coil frame, the bottom surface of the magnetic cylinder contacts the bottom plate of the contactor yoke, and the moving magnetic core is movably arranged in the magnetic cylinder.

[0025] According to another exemplary embodiment of the present invention, the coil bobbin is directly injection-molded onto the magnetic conductive cylinder by insert injection molding, so that the coil bobbin and the magnetic conductive cylinder become an integrated part.

[0026] In the aforementioned exemplary embodiments of the present invention, the contactor yoke is fixed to the upper shell and the lower shell by snap-fitting, which simplifies the fixing process, reduces costs, improves production efficiency, and makes the fixation of the contactor yoke more reliable.

[0027] Other objects and advantages of the present invention will become apparent from the following description of the present invention with reference to the accompanying drawings, which will help to provide a comprehensive understanding of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A perspective schematic diagram showing a contactor according to an exemplary embodiment of the present utility model;

[0029] Figure 2 A cross-sectional view showing a contactor according to an exemplary embodiment of the present invention;

[0030] Figure 3 A perspective schematic diagram showing a contactor yoke and a magnetic conductive plate according to an exemplary embodiment of the present utility model;

[0031] Figure 4 A perspective schematic diagram showing a contactor yoke according to an exemplary embodiment of the present utility model;

[0032] Figure 5 A cross-sectional view of a contactor according to an exemplary embodiment of the present invention is shown, wherein the upper pin and the lower pin of the contactor yoke are shown;

[0033] Figure 6 An exploded schematic diagram showing a contactor according to an exemplary embodiment of the present invention;

[0034] Figure 7 An exploded cross-sectional schematic diagram showing a contactor according to an exemplary embodiment of the present utility model;

[0035] Figure 8 Another exploded schematic cross-sectional view of a contactor according to an exemplary embodiment of the present invention is shown. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be further described in detail below through examples and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall concept of the present invention and should not be construed as limiting the present invention.

[0037] In addition, in the following detailed description, for ease of explanation, numerous specific details are set forth to provide a comprehensive understanding of the disclosed embodiments. However, it is apparent that one or more embodiments can be practiced without these specific details. In other cases, well-known structures and devices are shown in diagrammatic form to simplify the accompanying drawings.

[0038] According to an overall technical concept of the present invention, a contactor yoke is provided. The contactor yoke comprises: a pair of side plates, each having an upper snap-on structure and a lower snap-on structure formed on its upper and lower portions, respectively; and a base plate connected between the bottoms of the pair of side plates. The upper snap-on structures of the pair of side plates are configured to snap onto the upper housing of the contactor to secure the contactor yoke and the magnetic conductive plate of the contactor to the upper housing, while the lower snap-on structures of the pair of side plates are configured to snap onto the lower housing of the contactor to secure the contactor yoke to the lower housing.

[0039] According to another general technical concept of the present invention, a contactor is provided. The contactor comprises: a housing comprising an upper housing and a lower housing assembled together; the aforementioned contactor yoke disposed in the lower housing; and a magnetic conductive plate disposed in the lower housing and supported on the top surfaces of a pair of side plates of the contactor yoke. The upper snap-fit structure of the contactor yoke snaps onto the upper housing to secure the contactor yoke and the magnetic conductive plate together to the upper housing, and the lower snap-fit structure of the contactor yoke snaps onto the lower housing to secure the contactor yoke to the lower housing.

[0040] Figure 1 A perspective schematic diagram showing a contactor according to an exemplary embodiment of the present utility model; Figure 2 A cross-sectional view showing a contactor according to an exemplary embodiment of the present invention; Figure 3 A perspective schematic diagram showing a contactor yoke 3 and a magnetic conductive plate 4 according to an exemplary embodiment of the present utility model; Figure 4 A perspective schematic diagram showing a contactor yoke 3 according to an exemplary embodiment of the present utility model; Figure 5 A cross-sectional view of a contactor according to an exemplary embodiment of the present invention is shown, wherein the upper pin 33 and the lower pin 34 of the contactor yoke 3 are shown; Figure 6 An exploded schematic diagram showing a contactor according to an exemplary embodiment of the present invention; Figure 7 An exploded cross-sectional schematic diagram showing a contactor according to an exemplary embodiment of the present utility model; Figure 8 Another exploded schematic cross-sectional view of a contactor according to an exemplary embodiment of the present invention is shown.

[0041] like Figures 1 to 8As shown, in an exemplary embodiment of the present invention, a contactor yoke 3 is disclosed. The contactor yoke 3 includes: a pair of side plates 31 and a bottom plate 32. An upper snap-fit structure and a lower snap-fit structure are formed at the upper and lower parts of the pair of side plates 31, respectively. The bottom plate 32 is connected between the bottoms of the pair of side plates 31. The upper snap-fit structure of the pair of side plates 31 is used to snap onto the upper shell 11 of the contactor to fix the contactor yoke 3 and the magnetic conductive plate 4 of the contactor to the upper shell 11 together. The lower snap-fit structure of the pair of side plates 31 is used to snap onto the lower shell 12 of the contactor to fix the contactor yoke 3 to the lower shell 12.

[0042] like Figures 1 to 8 As shown, in the illustrated embodiment, the upper snap-fit structure 33 includes an upper pin 33 for inserting into the upper slot 11a of the upper housing 11 of the contactor. The lower snap-fit structure 34 includes a lower pin 34 for inserting into the lower slot 12a of the lower housing 12 of the contactor.

[0043] like Figures 1 to 8 As shown, in the illustrated embodiment, the bottom plate 32 extends along a first direction X and a second direction Y that are perpendicular to each other, and the side plate 31 extends along the first direction X and a third direction (height direction) Z that is perpendicular to the first direction X and the second direction Y. The side plate 31 has left and right sides that are opposite to each other in the first direction X. An upper pin 33 is formed on the left and right sides of the upper portion of the side plate 31, respectively, and a lower pin 34 is formed on the left and right sides of the lower portion of the side plate 31, respectively.

[0044] like Figures 1 to 8 As shown, in the illustrated embodiment, the width of the side panel 31 in the first direction X is greater than the width of the bottom panel 32 in the first direction X, one end of the bottom panel 32 is located between the two lower pins 34 of one side panel 31, and the other end of the bottom panel 32 is located between the two lower pins 34 of the other side panel 31.

[0045] like Figures 1 to 8 As shown, in the illustrated embodiment, upper pins 33 are formed with upper barbs 33a, which are adapted to interference fit with the inner wall of the upper slot 11a of the upper housing 11, thereby securing the upper pin 33 in the upper slot 11a and preventing the upper pin 33 from being removed from the upper slot 11a. Lower pins 34 are formed with lower barbs 34a, which are adapted to interference fit with the inner wall of the lower slot 12a of the lower housing 12, thereby securing the lower pin 34 in the lower slot 12a and preventing the lower pin 34 from being removed from the lower slot 12a.

[0046] like Figures 1 to 8As shown, in the illustrated embodiment, a plurality of upper barbs 33a are formed on the upper pin 33, and the plurality of upper barbs 33a are spaced apart in the extension direction (height direction) of the upper pin 33. A plurality of lower barbs 34a are formed on the lower pin 34, and the plurality of lower barbs 34a are spaced apart in the extension direction (height direction) of the lower pin 34.

[0047] like Figures 1 to 8 As shown, in another exemplary embodiment of the present invention, a contactor is also disclosed. The contactor includes: a housing, a contactor yoke 3 and a magnetic conductive plate 4. The housing includes an upper housing 11 and a lower housing 12 assembled together. The contactor yoke 3 is arranged in the lower housing 12. The magnetic conductive plate 4 is arranged in the lower housing 12 and is supported on the top surface of a pair of side plates 31 of the contactor yoke 3. The upper snap-fit structure of the contactor yoke 3 is snapped to the upper housing 11 to fix the contactor yoke 3 and the magnetic conductive plate 4 together to the upper housing 11. The lower snap-fit structure of the contactor yoke 3 is snapped to the lower housing 12 to fix the contactor yoke 3 to the lower housing 12.

[0048] like Figures 1 to 8 As shown, in the illustrated embodiment, an upper slot 11a is formed in the upper housing 11, and the upper pin 33 of the contactor yoke 3 is inserted into the upper slot 11a to fix the contactor yoke 3 and the magnetic conductive plate 4 together to the upper housing 11. A lower slot 12a is formed in the lower housing 12, and the lower pin 34 of the contactor yoke 3 is inserted into the lower slot 12a to fix the contactor yoke 3 to the lower housing 12.

[0049] like Figures 1 to 8 As shown, in the illustrated embodiment, the magnetic conductive plate 4 is opposite the bottom plate 32 of the contactor yoke 3, and both ends of the magnetic conductive plate 4 are supported on the top surfaces of a pair of side plates 31 of the contactor yoke 3. One end of the magnetic conductive plate 4 is located between the two upper pins 33 of one side plate 31 of the contactor yoke 3, and the other end of the magnetic conductive plate 4 is located between the two upper pins 33 of the other side plate 31 of the contactor yoke 3.

[0050] like Figures 1 to 8 As shown, in the illustrated embodiment, the lower portion of the upper shell 11 is inserted into the upper opening of the lower shell 12, and a plurality of protrusions 11b are formed on the lower peripheral wall 9a of the upper shell 11 at intervals, and a plurality of slots 12b are formed on the upper peripheral wall of the lower shell 12 at intervals, and the plurality of protrusions 11b are respectively engaged with the plurality of slots 12b to fix the upper shell 11 and the lower shell 12 together.

[0051] like Figures 1 to 8As shown, in the illustrated embodiment, the contactor further includes a shielding shell 9. The upper shell 11 is injection molded onto the shielding shell 9 by an insert injection molding process, so that the shielding shell 9 is embedded in the upper shell 11. The shielding shell 9 has a lower peripheral wall 9a extending from the lower end of the upper shell 11. The lower peripheral wall 9a of the shielding shell 9 is in electrical contact with the peripheral surface of the magnetic conductive plate 4.

[0052] like Figures 1 to 8 As shown, in the illustrated embodiment, the contactor further includes a pair of static terminals 1 and a movable terminal 2. The pair of static terminals 1 are fixed to the top wall of the upper housing 11 and extend into the arc extinguishing chamber 101 of the upper housing 11. The movable terminal 2 is movably disposed in the arc extinguishing chamber 101 of the upper housing 11 and is capable of moving between a closed position in electrical contact with the pair of static terminals 1 and an open position in electrical separation from the pair of static terminals 1.

[0053] like Figures 1 to 8 As shown, in the illustrated embodiment, the contactor further includes a pair of magnetic blowout magnets 8. The pair of magnetic blowout magnets 8 are embedded in the peripheral wall of the upper housing 11 and are adjacent to the pair of static terminals 1. The pair of magnetic blowout magnets 8 are suitable for extinguishing the arc between the movable terminal 2 and the static terminal 1 by magnetic blowing.

[0054] like Figures 1 to 8 As shown, in the illustrated embodiment, the contactor further includes an insulating base 20, a contact spring 21, and a limiting bracket 22. The insulating base 20 is located in the arc extinguishing chamber 101 of the upper housing 11. The contact spring 21 is compressed between the movable terminal 2 and the insulating base 20, applying contact pressure to the movable terminal 2. The limiting bracket 22 is fixed to the insulating base 20 to limit the direction and distance of movement of the movable terminal 2 relative to the insulating base 20.

[0055] like Figures 1 to 8 As shown, in the illustrated embodiment, the contactor further includes a coil assembly, which is disposed in the contactor yoke 3. The coil assembly includes a coil bobbin 61 and a coil 62 wound around the coil bobbin 61. The bottom of the coil bobbin 61 is supported on the bottom plate 32 of the contactor yoke 3, and the magnetic conductive plate 4 is located above the top of the coil bobbin 61.

[0056] like Figures 1 to 8 As shown, in the illustrated embodiment, the contactor further includes a drive shaft 23. The drive shaft 23 is disposed within the coil bobbin 61, and its upper end passes through the magnetic conductive plate 4 and extends into the arc extinguishing chamber 101. The upper end of the drive shaft 23 is secured to the insulating base 20, which electrically isolates the upper end of the drive shaft 23 from the contact spring 21 and the limiting bracket 22.

[0057] like Figures 1 to 8As shown, in the illustrated embodiment, the insulating base 20 is directly injection molded onto the driving shaft 23 and the limiting bracket 22 by insert injection molding, so that the insulating base 20, the driving shaft 23 and the limiting bracket 22 become an integrated part.

[0058] like Figures 1 to 8 As shown, in the illustrated embodiment, the contactor further includes: a static magnetic core 51 and a dynamic magnetic core 52. The static magnetic core 51 is located in a coil bobbin 61 and is fixed to the magnetic conductive plate 4. The dynamic magnetic core 52 is movably disposed in the coil bobbin 61 and is capable of moving along the axial direction thereof. The drive shaft 23 movably passes through the static magnetic core 51 and the dynamic magnetic core 52, and the lower end of the drive shaft 23 is connected to the dynamic magnetic core 52 so as to move with the dynamic magnetic core 52.

[0059] like Figures 1 to 8 As shown, in the illustrated embodiment, the contactor further includes a return spring 24, which is mounted on the drive shaft 23 and compressed between the static magnetic core 51 and the moving magnetic core 52. When the coil 62 is energized, the drive shaft 23, under the action of electromagnetic force, drives the movable terminal 2 from the open position to the closed position. When the coil 62 is de-energized, the drive shaft 23, under the action of the elastic return force of the return spring 24, drives the movable terminal 2 from the closed position to the open position.

[0060] like Figures 1 to 8 As shown, in the illustrated embodiment, the contactor further includes a magnetic tube 7, which is fixed to the lower end of the coil bobbin 61. The bottom surface of the magnetic tube 7 contacts the bottom plate 32 of the contactor yoke 3, and the moving magnetic core 52 is movably disposed in the magnetic tube 7.

[0061] like Figures 1 to 8 As shown, in the illustrated embodiment, the coil bobbin 61 is directly injection-molded onto the magnetic cylinder 7 by insert injection molding, so that the coil bobbin 61 and the magnetic cylinder 7 become an integrated part.

[0062] Those skilled in the art will understand that the embodiments described above are exemplary and can be improved by those skilled in the art. The structures described in the various embodiments can be freely combined without causing any conflicts in structure or principle. These changes should fall within the scope of protection of the present invention.

[0063] Although the present invention has been described in conjunction with the accompanying drawings, the embodiments disclosed in the drawings are intended to exemplify the preferred implementations of the present invention and should not be construed as limiting the present invention.

[0064] Although some embodiments of the general concept of the present invention have been shown and described, it will be understood by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general concept of the present invention, the scope of which is defined by the claims and their equivalents.

[0065] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "a" or "an" does not exclude a plurality. In addition, any element number in the claims should not be construed as limiting the scope of the present invention.

Claims

1. A contactor yoke, characterized in that: include: A pair of side plates (31) are respectively formed with an upper buckle structure and a lower buckle structure at the upper and lower parts thereof; and A bottom plate (32) connected between the bottoms of the pair of side plates (31), The upper snap-fit structure of the pair of side plates (31) is used to snap-fit to the upper housing (11) of the contactor, so as to fix the contactor yoke (3) and the magnetic conductive plate (4) of the contactor to the upper housing (11) together. The lower snap-fit structure of the pair of side plates (31) is used to snap-fit to the lower housing (12) of the contactor to fix the contactor yoke (3) to the lower housing (12).

2. The contactor yoke according to claim 1, wherein: The upper buckle structure comprises an upper pin (33), and the upper pin (33) is used to be plugged into an upper slot (11a) of the upper housing (11) of the contactor; The lower buckle structure comprises a lower pin (34), and the lower pin (34) is used for being plugged into a lower slot (12a) of the lower housing (12) of the contactor.

3. The contactor yoke according to claim 2, wherein: The bottom plate (32) extends along a first direction (X) and a second direction (Y) perpendicular to each other, and the side plate (31) extends along the first direction (X) and a third direction (Z) perpendicular to the first direction (X) and the second direction (Y); The side plate (31) has left and right sides opposite to each other in the first direction (X), an upper pin (33) is formed on the left and right sides of the upper part of the side plate (31), and a lower pin (34) is formed on the left and right sides of the lower part of the side plate (31).

4. The contactor yoke according to claim 3, characterized in that: The width of the side plate (31) in the first direction (X) is greater than the width of the bottom plate (32) in the first direction (X); one end of the bottom plate (32) is located between the two lower pins (34) of one side plate (31); and the other end of the bottom plate (32) is located between the two lower pins (34) of the other side plate (31).

5. The contactor yoke according to any one of claims 2 to 4, characterized in that: An upper barb (33a) is formed on the upper pin (33), and the upper barb (33a) is suitable for interference fit with the inner wall of the upper slot (11a) of the upper shell (11) to fix the upper pin (33) in the upper slot (11a) and prevent the upper pin (33) from being pulled out of the upper slot (11a); and / or A lower barb (34a) is formed on the lower pin (34), and the lower barb (34a) is suitable for interference fit with the inner wall of the lower slot (12a) of the lower shell (12) to fix the lower pin (34) in the lower slot (12a) and prevent the lower pin (34) from being pulled out of the lower slot (12a).

6. The contactor yoke according to claim 5, characterized in that: A plurality of upper barbs (33a) are formed on the upper pin (33), and the plurality of upper barbs (33a) are distributed at intervals in the extension direction of the upper pin (33); and / or A plurality of lower barbs (34a) are formed on the lower pin (34), and the plurality of lower barbs (34a) are distributed at intervals in the extension direction of the lower pin (34).

7. A contactor, characterized in that: include: A housing, comprising an upper housing (11) and a lower housing (12) assembled together; The contactor yoke (3) according to any one of claims 1 to 6, arranged in the lower housing (12); and A magnetic conductive plate (4) is provided in the lower housing (12) and supported on the top surface of a pair of side plates (31) of the contactor yoke (3). The upper snap-fit structure of the contactor yoke (3) is snap-fitted to the upper housing (11) to fix the contactor yoke (3) and the magnetic conductive plate (4) together to the upper housing (11). The lower snap-fit structure of the contactor yoke (3) is snap-fitted to the lower housing (12) to fix the contactor yoke (3) to the lower housing (12).

8. The contactor according to claim 7, characterized in that: An upper slot (11a) is formed in the upper housing (11), and an upper pin (33) of the contactor yoke (3) is inserted into the upper slot (11a) to fix the contactor yoke (3) and the magnetic conductive plate (4) together to the upper housing (11); A lower slot (12a) is formed in the lower housing (12), and a lower pin (34) of the contactor yoke (3) is inserted into the lower slot (12a) to fix the contactor yoke (3) to the lower housing (12).

9. The contactor according to claim 8, characterized in that: The magnetic conductive plate (4) is opposite to the bottom plate (32) of the contactor yoke (3), and both ends of the magnetic conductive plate (4) are respectively supported on the top surfaces of a pair of side plates (31) of the contactor yoke (3); One end of the magnetic conductive plate (4) is located between two upper pins (33) of one side plate (31) of the contactor yoke (3), and the other end of the magnetic conductive plate (4) is located between two upper pins (33) of another side plate (31) of the contactor yoke (3).

10. The contactor according to claim 8, characterized in that: The lower portion of the upper shell (11) is inserted into the upper opening of the lower shell (12), a plurality of protrusions (11b) are formed on the lower peripheral wall (9a) of the upper shell (11), and a plurality of slots (12b) are formed on the upper peripheral wall of the lower shell (12), and the plurality of protrusions (11b) are respectively engaged with the plurality of slots (12b) to fix the upper shell (11) and the lower shell (12) together.

11. The contactor according to claim 8, characterized in that Also includes: A shielding shell (9), wherein the upper shell (11) is injection-molded onto the shielding shell (9) through an insert injection molding process, so that the shielding shell (9) is embedded in the upper shell (11). The shielding shell (9) has a lower peripheral wall (9a) extending from the lower end of the upper shell (11), and the lower peripheral wall (9a) of the shielding shell (9) is in electrical contact with the peripheral surface of the magnetic conductive plate (4).

12. The contactor according to claim 8, characterized in that Also includes: A pair of static terminals (1) fixed to the top wall of the upper housing (11) and extending into the arc extinguishing chamber (101) of the upper housing (11); and The movable terminal (2) is movably arranged in the arc extinguishing chamber (101) of the upper housing (11) and is movable between a closed position electrically contacting the pair of static terminals (1) and an open position electrically separated from the pair of static terminals (1).

13. The contactor according to claim 12, characterized in that Also includes: A pair of magnetic blow magnets (8) are embedded in the peripheral wall of the upper shell (11) and are adjacent to the pair of static terminals (1). The pair of magnetic blowing magnets (8) are suitable for extinguishing the arc between the movable terminal (2) and the static terminal (1) by magnetic blowing.

14. The contactor according to claim 12, characterized in that Also includes: An insulating base (20) is located in the arc extinguishing chamber (101) of the upper housing (11); a contact spring (21) compressed between the movable terminal (2) and the insulating base (20) for applying contact pressure to the movable terminal (2); and A limiting bracket (22) is fixed to the insulating base (20) and is used to limit the moving direction and moving distance of the movable terminal (2) relative to the insulating base (20).

15. The contactor according to claim 14, characterized in that Also includes: A coil assembly is arranged in the contactor yoke (3), comprising a coil frame (61) and a coil (62) wound on the coil frame (61), The bottom of the coil frame (61) is supported on the bottom plate (32) of the contactor yoke (3), and the magnetic conductive plate (4) is located above the top of the coil frame (61).

16. The contactor according to claim 15, characterized in that Also includes: A drive shaft (23) is arranged in the coil frame (61) and its upper end passes through the magnetic conductive plate (4) and extends into the arc extinguishing chamber (101). The upper end of the drive shaft (23) is fixed to the insulating base (20), and the insulating base (20) electrically isolates the upper end of the drive shaft (23) from the contact spring (21) and the limiting bracket (22).

17. The contactor according to claim 16, characterized in that: The insulating base (20) is directly injection-molded onto the drive shaft (23) and the limiting bracket (22) by means of embedded injection molding, so that the insulating base (20), the drive shaft (23) and the limiting bracket (22) become an integrated part.

18. The contactor according to claim 16, characterized in that Also includes: a static magnetic core (51) located in the coil bobbin (61) and fixed to the magnetic conductive plate (4); and The moving magnetic core (52) is movably arranged in the coil frame (61) and can move along its axial direction. The driving shaft (23) movably passes through the static magnetic core (51) and the moving magnetic core (52), and the lower end of the driving shaft (23) is connected to the moving magnetic core (52) to move together with the moving magnetic core (52).

19. The contactor according to claim 18, characterized in that Also includes: A return spring (24) is mounted on the drive shaft (23) and compressed between the static magnetic core (51) and the dynamic magnetic core (52). When the coil (62) is energized, the drive shaft (23) drives the movable terminal (2) from the open position to the closed position under the action of electromagnetic force. When the coil (62) loses power, the drive shaft (23) drives the movable terminal (2) to move from the closed position to the open position under the action of the elastic reset force of the reset spring (24).

20. The contactor according to claim 18, wherein: Also includes: The magnetic tube (7) is fixed to the lower end of the coil frame (61). The bottom surface of the magnetic cylinder (7) contacts the bottom plate (32) of the contactor yoke (3), and the moving magnetic core (52) is movably arranged in the magnetic cylinder (7).

21. The contactor according to claim 20, characterized in that: The coil skeleton (61) is directly injection-molded onto the magnetic cylinder (7) by means of embedded injection molding, so that the coil skeleton (61) and the magnetic cylinder (7) become an integrated part.

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