Contactor yoke and contactor

Abstract

This relates to a contactor yoke and a contactor equipped with a contactor yoke. [Solution] In the contactor yoke, the upper buckle structure of a pair of side plates is used to buckle-fasten to the upper housing in order to secure the contactor yoke and magnetic plate of the contactor to the upper housing of the contactor. The lower buckle structure of a pair of side plates is used to buckle-fasten to the lower housing in order to secure the contactor yoke to the lower housing of the contactor. The contactor yoke is fastened to the upper and lower housings by a snap-fit ​​system, which simplifies the fastening process, reduces costs, improves production efficiency, and makes the fastening of the contactor yoke more secure.

Description

Technical Field

[0001] Cross - reference to Related Applications This application claims the benefit of Chinese Patent Application No. CN202422489367.6, filed with the China National Intellectual Property Administration on October 15, 2024, the entire disclosure of which is incorporated herein by reference.

[0002] The present invention relates to a contactor yoke and a contact including the contactor yoke.

Background Art

[0003] In the prior art, a contact typically includes a housing, a pair of stationary terminals, a movable terminal, a yoke, a magnetic plate, and a coil assembly. The housing includes an upper housing and a lower housing that are assembled together. The pair of stationary terminals are fixed to the upper wall portion of the upper housing and extend into the arc extinguishing chamber of the upper housing. The movable terminal is installed in the arc extinguishing chamber of the upper housing and can move between a closed position in electrical contact with the pair of stationary terminals and an open position electrically separated from the pair of stationary terminals. The yoke and the magnetic plate are installed in the lower housing to form the magnetic circuit of the contact. The coil assembly is installed on the yoke. The coil assembly includes a coil skeleton and a coil wound around the coil skeleton.

[0004] In the prior art, the upper parts of the pair of side plates of the yoke are riveted to the magnetic plate through four rivet plates, so that the yoke and the magnetic plate are fixed together. The bottom of the yoke is adhered to the bottom wall portion of the lower housing or the bottom of the yoke is not fixed. Existing methods such as riveting and adhesive bonding have drawbacks such as the complexity of the process, high cost, uncertainty of fixation, a process requiring a great deal of time and labor, and low production efficiency.

Summary of the Invention

[0005] This invention was made to overcome or mitigate at least one aspect of the aforementioned drawbacks. [Means for solving the problem]

[0006] 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 buckle structure and a lower buckle structure formed on the upper and lower parts of the pair of side plates, respectively, and a bottom plate connected between the bottoms of the pair of side plates. The upper buckle structure of the pair of side plates is used to buckle to the upper housing in order to secure the contactor yoke and magnetic plate of the contactor together to the upper housing of the contactor, and the lower buckle structure of the pair of side plates is used to buckle to the lower housing in order to secure the contactor yoke to the lower housing of the contactor.

[0007] According to one exemplary embodiment of the present invention, the upper buckle structure comprises an upper pin for insertion into an upper slot of the upper housing of the contactor, and the lower buckle structure comprises a lower pin for insertion into a lower slot of the lower housing of the contactor.

[0008] 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 plates extend along the first direction and a third direction perpendicular to the first and second directions. The side plates have a left and right side opposite each other in the first direction, with upper pins formed on each upper side of the side plates and lower pins formed on each lower side of the side plates.

[0009] According to another exemplary embodiment of the present invention, the width of the side plate in the first direction is greater than the width of the bottom plate in the first direction, one end of the bottom plate is located between two lower pins of one side plate, and the other end of the bottom plate is located between two lower pins of the other side plate.

[0010] According to another exemplary embodiment of the present invention, an upper barb is formed on an upper pin, and the upper barb is suitable for interlocking with the inner wall of the upper slot of the upper housing to secure 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 a lower pin, and the lower barb is suitable for interlocking with the inner wall of the lower slot of the lower housing to secure the lower pin in the lower slot and prevent the lower pin from being pulled out of the lower slot.

[0011] According to another exemplary embodiment of the present invention, a plurality of upper barbs are formed on an upper pin, and the plurality of upper barbs are spaced apart in the direction of extension of the upper pin, and / or a plurality of lower barbs are formed on a lower pin, and the plurality of lower barbs are spaced apart in the direction of extension of the lower pin.

[0012] According to another aspect of the present invention, a contactor is provided. The contactor comprises a housing including an upper housing and a lower housing assembled together, the above-described contactor yoke provided in the lower housing, and a magnetic plate installed in the lower housing and supported on the upper surfaces of a pair of side plates of the contactor yoke. The upper buckle structure of the contactor yoke fastens the contactor yoke and the magnetic plate together to the upper housing by being buckled to the upper housing, and the lower buckle structure of the contactor yoke fastens the contactor yoke to the lower housing by being buckled to the lower housing.

[0013] According to one exemplary embodiment of the present invention, an upper slot is formed in the upper housing, and the upper pin of the contactor yoke is inserted into the upper slot to fix the contactor yoke and magnetic plate together to the upper housing; and a lower slot is formed in the lower housing, and the lower pin of the contactor yoke is inserted into the lower slot to fix the contactor yoke to the lower housing.

[0014] According to another exemplary embodiment of the present invention, the magnetic plate is located opposite the bottom plate of the contactor yoke, with both ends of the magnetic plate supported by the upper surfaces of a pair of side plates of the contactor yoke, with one end of the magnetic plate located between two upper pins of one side plate of the contactor yoke, and the other end of the magnetic plate located between two upper pins of the other side plate of the contactor yoke.

[0015] According to another exemplary embodiment of the present invention, the lower part of the upper housing is inserted into the upper opening of the lower housing, a plurality of spaced-apart protrusions are formed on the lower peripheral wall of the upper housing, a plurality of spaced-apart snap slots are formed on the upper peripheral wall of the lower housing, and the plurality of protrusions are fixed together by engaging with the plurality of snap slots, respectively.

[0016] According to another exemplary embodiment of the present invention, the contactor further comprises a shield shell, the upper housing being injection-molded onto the shield shell by an embedded injection molding process such that the shield shell is embedded in the upper housing, the shield shell having a lower peripheral wall portion extending from the lower end of the upper housing, the lower peripheral wall portion of the shield shell being in electrical contact with the circumferential surface of the magnetic plate.

[0017] According to another exemplary embodiment of the present invention, the contactor further comprises a pair of stationary terminals fixed to the upper wall of the upper housing and extending into the arc extinguishing chamber of the upper housing, and a movable terminal provided in the arc extinguishing chamber of the upper housing and movable between a closed position in which it is electrically in contact with the pair of stationary terminals and an open position in which it is electrically isolated from the pair of stationary terminals.

[0018] According to another exemplary embodiment of the present invention, the contactor further comprises a pair of magnetic blowing magnets embedded in the circumferential wall of the upper housing and adjacent to a pair of stationary terminals, the pair of magnetic blowing magnets being suitable for extinguishing arcs between the movable terminals and the stationary terminals caused by magnetic blowing.

[0019] According to another exemplary embodiment of the present invention, the contactor further comprises an insulating base located in the arc extinguishing chamber of an upper housing, a contact spring that applies contact pressure to the movable terminal by being compressed between the movable terminal and the insulating base, and a limiting bracket fixed to the insulating base to limit the direction and distance of movement of the movable terminal relative to the insulating base.

[0020] According to another exemplary embodiment of the present invention, the contactor further comprises a coil assembly provided on a contactor yoke and comprising a coil frame and a coil wound around the coil frame, the bottom of the coil frame being supported by a bottom plate of the contactor yoke, and a magnetic plate positioned above the top of the coil frame.

[0021] According to another exemplary embodiment of the present invention, the contactor further comprises a drive shaft provided on a coil frame, the upper end of which penetrates a magnetic plate and extends into an arc extinguishing chamber, the upper end of which is fixed to an insulating base, the insulating base electrically insulating the upper end of which from a contact spring and a limiting bracket.

[0022] 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 embedded injection molding, whereby the insulating base, the drive shaft, and the limiting bracket are integral parts.

[0023] According to another exemplary embodiment of the present invention, the contactor further includes a stationary magnetic core located in the coil skeleton and fixed to the magnetic plate, and a movable magnetic core disposed in the coil skeleton and movable along the axial direction of the coil skeleton. The drive shaft passes through the stationary magnetic core and the movable magnetic core, and the lower end of the drive shaft is connected to the movable magnetic core and moves together with the movable magnetic core.

[0024] According to another exemplary embodiment of the present invention, the contactor further includes a return spring attached to the drive shaft and compressed between the stationary magnetic core and the movable magnetic core. When the coil is energized, the drive shaft drives the movable terminal to move from the open position to the closed position under the action of electromagnetic force. When the power supply to the coil is eliminated, the drive shaft drives the movable terminal to move from the closed position to the open position under the elastic restoring force of the return spring.

[0025] According to another exemplary embodiment of the present invention, the contactor further includes a magnetic tube fixed to the lower end of the coil skeleton, the bottom surface of the magnetic tube contacts the bottom plate of the contactor yoke, and the movable magnetic core is movable within the magnetic tube.

[0026] According to another exemplary embodiment of the present invention, the coil skeleton is directly injection molded onto the magnetic tube by embedded injection molding, whereby the coil skeleton and the magnetic tube are integral parts.

[0027] In the above-described embodiments according to the present invention, the contactor yoke is fixed to the upper housing and the lower housing by a snap-fit method, thereby simplifying the fixing process, reducing costs, improving production efficiency, and making the fixing of the contactor yoke more reliable.

[0028] The above and other features of the present invention will become more apparent by describing one exemplary embodiment of the present invention in detail with reference to the accompanying drawings.

Brief Description of the Drawings

[0029] [Figure 1] FIG. 8 is an explanatory perspective view of a contactor according to one exemplary embodiment of the present invention. [Figure 2] FIG. 11 is a cross-sectional view of a contactor according to one exemplary embodiment of the present invention. [Figure 3] FIG. 14 is an explanatory perspective view of a contactor yoke and a magnetic plate according to one exemplary embodiment of the present invention. [Figure 4] FIG. 17 is an explanatory perspective view of a contactor yoke according to one exemplary embodiment of the present invention. [Figure 5] FIG. 20 is a cross-sectional view of a contactor according to one exemplary embodiment of the present invention, showing upper pins and lower pins of the contactor yoke. [Figure 6] FIG. 23 is an exploded view of a contactor according to one exemplary embodiment of the present invention. [Figure 7] FIG. 26 is an exploded cross-sectional view of a contactor according to one exemplary embodiment of the present invention. [Figure 8] FIG. 29 is another exploded cross-sectional view of a contactor according to one exemplary embodiment of the present invention.

Mode for Carrying Out the Invention

[0030] Referring to the accompanying drawings, one exemplary embodiment of the present disclosure will be described in detail below. In these drawings, like reference numerals indicate the same elements. However, the present disclosure can be embodied in many different forms and should not be construed as limited to the embodiments shown herein. Rather, these embodiments are presented so that the present disclosure will be thorough and complete, and the concept of the present disclosure will be fully conveyed to those skilled in the art.

[0031] In the following detailed description, numerous specific details are provided for illustrative purposes to ensure a full understanding of the disclosed embodiments. However, it will become clear that it is possible to carry out one or more embodiments without using these specific details. In other examples, well-known structures and devices are shown schematicly for the sake of simplifying the drawings.

[0032] According to the general concept of the present invention, a contactor yoke is provided. The contactor yoke comprises a pair of side plates, each having an upper buckle structure and a lower buckle structure formed on the upper and lower parts of the pair of side plates, respectively, and a bottom plate connected between the bottoms of the pair of side plates. The upper buckle structure of the pair of side plates is used to buckle to the upper housing in order to secure the contactor yoke and magnetic plate of the contactor together to the upper housing of the contactor, and the lower buckle structure of the pair of side plates is used to buckle to the lower housing in order to secure the contactor yoke to the lower housing of the contactor.

[0033] According to another general concept of the present invention, a contactor is provided. The contactor comprises a housing including an upper housing and a lower housing assembled together, the contactor yoke provided in the lower housing, and a magnetic plate mounted in the lower housing and supported on the upper surface of a pair of side plates of the contactor yoke. An upper buckle structure of the contactor yoke fastens the contactor yoke and the magnetic plate together to the upper housing by being buckled to the upper housing, and a lower buckle structure of the contactor yoke fastens the contactor yoke to the lower housing by being buckled to the lower housing.

[0034] Figure 1 shows an explanatory perspective view of a contactor according to one embodiment of the present invention. Figure 2 shows a cross-sectional view of a contactor according to one embodiment of the present invention. Figure 3 shows an explanatory perspective view of the contactor yoke 3 and magnetic plate 4 according to one embodiment of the present invention. Figure 4 shows an explanatory perspective view of the contactor yoke 3 according to one embodiment of the present invention. Figure 5 shows a cross-sectional view of a contactor according to one embodiment of the present invention, showing the upper pin 33 and lower pin 34 of the contactor yoke 3. Figure 6 shows an explanatory exploded view of a contactor according to one embodiment of the present invention. Figure 7 shows an explanatory exploded cross-sectional view of a contactor according to one embodiment of the present invention. Figure 8 shows another explanatory exploded cross-sectional view of a contactor according to one embodiment of the present invention.

[0035] As shown in Figures 1 to 8, in one exemplary embodiment of the present invention, a contactor yoke 3 is disclosed. The contactor yoke 3 comprises a pair of side plates 31 and a bottom plate 32. An upper buckle structure and a lower buckle structure are formed on 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 buckle structure of the pair of side plates 31 is used to buckle to the upper housing 11 in order to secure the contactor yoke 3 and magnetic plate 4 of the contactor together to the upper housing 11 of the contactor. The lower buckle structure of the pair of side plates 31 is used to buckle to the lower housing 12 in order to secure the contactor yoke 3 to the lower housing 12 of the contactor.

[0036] As shown in Figures 1 to 8, in the illustrated embodiment, the upper buckle structure 33 includes an upper pin 33, which is used to insert into the upper slot 11a of the upper housing 11 of the contactor. The lower buckle structure 34 includes a lower pin 34, which is used to insert into the lower slot 12a of the lower housing 12 of the contactor.

[0037] As shown in Figures 1 to 8, in the illustrated embodiment, the bottom plate 32 extends along a first direction X and a second direction Y which are perpendicular to each other, and the side plate 31 extends along the first direction X and a third direction (height direction) Z which is perpendicular to the first direction X and the second direction Y. The side plate 31 has a left side and a right side which are opposite in the first direction X. Upper pins 33 are formed on the upper left and right sides of the side plate 31, and lower pins 34 are formed on the lower left and right sides of the side plate 31.

[0038] As shown in Figures 1 to 8, in the illustrated embodiment, 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.

[0039] As shown in Figures 1 to 8, in the illustrated embodiment, an upper barb 33a is formed on the upper pin 33, and the upper barb 33a is suitable for interlocking with the inner wall of the upper slot 11a of the upper housing 11, thereby fixing the upper pin 33 in the upper slot 11a and preventing the upper pin 33 from being pulled out of the upper slot 11a. A lower barb 34a is formed on the lower pin 34, and the lower barb 34a is suitable for interlocking with the inner wall of the lower slot 12a of the lower housing 12, thereby fixing the lower pin 34 in the lower slot 12a and preventing the lower pin 34 from being pulled out of the lower slot 12a.

[0040] As shown in Figures 1 to 8, 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 distributed at intervals in the extending 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 distributed at intervals in the extending direction (height direction) of the lower pin 34.

[0041] As shown in Figures 1 to 8, in another exemplary embodiment of the present invention, a contactor is further disclosed. The contactor comprises a housing, a contactor yoke 3, and a magnetic plate 4. The housing includes an upper housing 11 and a lower housing 12 assembled together. The contactor yoke 3 is located in the lower housing 12. The magnetic plate 4 is mounted in the lower housing 12 and supported on the upper surfaces of a pair of side plates 31 of the contactor yoke 3. The upper buckle structure of the contactor yoke 3 fastens the contactor yoke 3 and the magnetic plate 4 together to the upper housing 11 by buckling it to the upper housing 11. The lower buckle structure of the contactor yoke 3 fastens the contactor yoke 3 to the lower housing 12 by buckling it to the lower housing 12.

[0042] As shown in Figures 1 to 8, 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, thereby fixing the contactor yoke 3 and the magnetic 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, thereby fixing the contactor yoke 3 to the lower housing 12.

[0043] As shown in Figures 1 to 8, in the illustrated embodiment, the magnetic plate 4 is located opposite the bottom plate 32 of the contactor yoke 3, and the two ends of the magnetic plate 4 are respectively supported on the upper surfaces of a pair of side plates 31 of the contactor yoke 3. One end of the magnetic 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 plate 4 is located between two upper pins 33 of the other side plate 31 of the contactor yoke 3.

[0044] As shown in Figures 1 to 8, in the illustrated embodiment, the lower part of the upper housing 11 is inserted into the upper opening of the lower housing 12. Multiple spaced projections 11b are formed on the lower peripheral wall 9a of the upper housing 11, and multiple spaced snap slots 12b are formed on the upper peripheral wall of the lower housing 12. The multiple projections 11b engage with the multiple snap slots 12b, respectively, thereby fixing both the upper housing 11 and the lower housing 12 together.

[0045] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises a shield shell 9. The upper housing 11 is injection molded into the shield shell 9 by an embedded injection molding process, and thus the shield shell 9 is embedded in the upper housing 11. The shield shell 9 has a lower peripheral wall portion 9a extending from the lower end of the upper housing 11, and the lower peripheral wall portion 9a of the shield shell 9 is in electrical contact with the circumferential surface of the magnetic plate 4.

[0046] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises a pair of stationary terminals 1 and a movable terminal 2. The pair of stationary terminals 1 are fixed to the upper wall of the upper housing 11 and extend into the arc extinguishing chamber 101 of the upper housing 11. The movable terminal 2 is installed in the arc extinguishing chamber 101 of the upper housing 11 and can move between a closed position in which it is electrically in contact with the pair of stationary terminals 1 and an open position in which it is electrically separated from the pair of stationary terminals 1.

[0047] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises a pair of magnetic blow magnets 8. The pair of magnetic blow magnets 8 are embedded in the circumferential wall of the upper housing 11 and are adjacent to a pair of stationary terminals 1. The pair of magnetic blow magnets 8 are suitable for extinguishing the electric arc between the movable terminal 2 and the stationary terminal 1 caused by magnetic blowing.

[0048] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises 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 and is used to apply contact pressure to the movable terminal 2. The limiting bracket 22 is fixed to the insulating base 20 and limits the direction and distance of movement of the movable terminal 2 relative to the insulating base 20.

[0049] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises a coil assembly, which is located on the contactor yoke 3. The coil assembly includes a coil frame 61 and a coil 62 wound around the coil frame 61. The bottom of the coil frame 61 is supported by a bottom plate 32 of the contactor yoke 3, and a magnetic plate 4 is located above the top of the coil frame 61.

[0050] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises a drive shaft 23. The drive shaft 23 is mounted on the coil frame 61, and the upper end of the drive shaft 23 penetrates the magnetic plate 4 and extends into the arc extinguishing chamber 101. The upper end of the drive shaft 23 is fixed to an insulating base 20, which electrically insulates the upper end of the drive shaft 23 from the contact spring 21 and the limiting bracket 22.

[0051] As shown in Figures 1 to 8, in the illustrated embodiment, the insulating base 20 is directly injection molded into the drive shaft 23 and the limiting bracket 22 by embedded injection molding, thereby making the insulating base 20, the drive shaft 23, and the limiting bracket 22 a single integrated part.

[0052] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises a stationary magnetic core 51 and a movable magnetic core 52. The stationary magnetic core 51 is located in the coil frame 61 and fixed to the magnetic plate 4. The movable magnetic core 52 is movably positioned in the coil frame 61 and can move along its axial direction. The drive shaft 23 passes through the stationary magnetic core 51 and the movable magnetic core 52, and the lower end of the drive shaft 23 is connected to the movable magnetic core 52 and moves together with the movable magnetic core 52.

[0053] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises a return spring 24, which is attached to the drive shaft 23 and compressed between the stationary magnetic core 51 and the movable 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 energization to the coil 62 is removed, the drive shaft 23 drives the movable terminal 2 from the closed position to the open position under the elastic returning force of the return spring 24.

[0054] As shown in Figures 1 to 8, in the illustrated embodiment, the contactor further comprises a magnetic tube 7, which is fixed to the lower end of the coil frame 61. The bottom surface of the magnetic tube 7 is in contact with the bottom plate 32 of the contactor yoke 3, and the movable magnetic core 52 is movably mounted in the magnetic tube 7.

[0055] As shown in Figures 1 to 8, in the illustrated embodiment, the coil frame 61 is directly injection molded into the magnetic tube 7 by embedded injection molding, thereby making the coil frame 61 and the magnetic tube 7 a single integrated component.

[0056] Those skilled in the art should understand that the embodiments described above are illustrative and not limiting. For example, those skilled in the art can make numerous modifications to the embodiments described above, and the various features described in the various embodiments can be freely combined with each other, as long as there is no contradiction in their configuration or principle.

[0057] While several illustrative embodiments have been illustrated and described, it will be understood by those skilled in the art that various modifications or changes can be made to these embodiments without departing from the principles and spirit of the disclosure. The scope of the disclosure is defined in the claims and its equivalents.

[0058] In this specification, elements listed in the singular form beginning with the words “one (a)” or “one (an)” should be understood not to exclude more than one such element or step unless otherwise specified. Furthermore, the reference to “one embodiment” of the present invention is not intended to be construed as excluding the existence of additional embodiments that similarly incorporate the described features. Moreover, unless otherwise specified, an embodiment “comprising” or “having” one or more elements having a particular characteristic may include additional such elements that do not possess that characteristic.

Claims

1. It is a contactor yoke, - A pair of side plates (31), wherein an upper buckle structure and a lower buckle structure are formed on the upper and lower parts of the pair of side plates (31), - A bottom plate (32) connected between the bottoms of the pair of side plates (31) and Equipped with, The upper buckle structure of the pair of side plates (31) is used to buckle-fasten to the upper housing (11) in order to fasten the contactor yoke (3) and magnetic plate (4) of the contactor together to the upper housing (11) of the contactor. The lower buckle structure of the pair of side plates (31) is used to buckle the contactor yoke (3) to the lower housing (12) of the contactor.

2. The upper buckle structure includes an upper pin (33) for insertion into the upper slot (11a) of the upper housing (11) of the contactor. The contactor yoke according to claim 1, wherein the lower buckle structure comprises a lower pin (34) for insertion into the lower slot (12a) of the lower housing (12) of the contactor.

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

4. The contactor yoke according to claim 3, wherein 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 two lower pins (34) of one side plate (31), and the other end of the bottom plate (32) is located between two lower pins (34) of the other side plate (31).

5. An upper barb (33a) is formed on the upper pin (33), and the upper barb (33a) is suitable for interlocking with the inner wall of the upper slot (11a) of the upper housing (11) to fix the upper pin (33) in the upper slot (11a) and to prevent the upper pin (33) from being pulled out of the upper slot (11a), and / or A contactor yoke according to any one of claims 2 to 4, wherein a lower barb (34a) is formed on the lower pin (34), and the lower barb (34a) is suitable for interlocking with the inner wall of the lower slot (12a) of the lower housing (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. Multiple upper barbs (33a) are formed on the upper pin (33), and the multiple upper barbs (33a) are spaced apart and distributed in the direction of extension of the upper pin (33), and / or The contactor yoke according to claim 5, wherein a plurality of lower barbs (34a) are formed on the lower pin (34), and the plurality of lower barbs (34a) are dispersed at intervals in the direction of extension of the lower pin (34).

7. It is a contactor, A housing including an upper housing (11) and a lower housing (12) that can be assembled together, The contactor yoke (3) according to any one of claims 1 to 6 is provided in the lower housing (12), A magnetic plate (4) is installed in the lower housing (12) and is supported on the upper surface of the pair of side plates (31) of the contactor yoke (3). Equipped with, The upper buckle structure of the contactor yoke (3) is buckled and fixed to the upper housing (11), thereby fixing both the contactor yoke (3) and the magnetic plate (4) to the upper housing (11). The lower buckle structure of the contactor yoke (3) is buckled and fixed to the lower housing (12), thereby fixing the contactor yoke (3) to the lower housing (12).

8. 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), thereby fixing the contactor yoke (3) and the magnetic plate (4) together to the upper housing (11). The contactor according to claim 7, wherein 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).

9. The magnetic plate (4) is located on the opposite side of the bottom plate (32) of the contactor yoke (3), and both ends of the magnetic plate (4) are supported on the upper surface of the pair of side plates (31) of the contactor yoke (3). The contactor according to claim 8, wherein one end of the magnetic 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 plate (4) is located between the two upper pins (33) of the other side plate (31) of the contactor yoke (3).

10. The contactor according to claim 8, wherein the lower part of the upper housing (11) is inserted into the upper opening of the lower housing (12), a plurality of spaced-apart protrusions (11b) are formed on the lower peripheral wall portion (9a) of the upper housing (11), a plurality of spaced-apart snap slots (12b) are formed on the upper peripheral wall portion of the lower housing (12), and the plurality of protrusions (11b) engage with the plurality of snap slots (12b) respectively to fix the upper housing (11) and the lower housing (12) together.

11. A shield shell (9), wherein the upper housing (11) is injection molded onto the shield shell (9) by an embedded injection molding process such that the shield shell (9) is embedded in the upper housing (11). Furthermore, The contactor according to claim 8, wherein the shield shell (9) has a lower peripheral wall portion (9a) extending from the lower end of the upper housing (11), and the lower peripheral wall portion (9a) of the shield shell (9) is in electrical contact with the circumferential surface of the magnetic plate (4).

12. A pair of stationary terminals (1) are fixed to the upper wall of the upper housing (11) and extend into the arc extinguishing chamber (101) of the upper housing (11), A movable terminal (2) is provided in the arc extinguishing chamber (101) of the upper housing (11) and can move between a closed position in which it is electrically in contact with the pair of stationary terminals (1) and an open position in which it is electrically separated from the pair of stationary terminals (1). The contactor according to claim 8, further comprising:

13. A pair of magnetic blowing magnets (8) are embedded in the circumferential wall of the upper housing (11) and are adjacent to the pair of stationary terminals (1). Furthermore, The contactor according to claim 12, wherein the pair of magnetic blow magnets (8) are suitable for extinguishing the arc between the movable terminal (2) and the stationary terminal (1) caused by magnetic blowing.

14. The insulating base (20) located in the arc extinguishing chamber (101) of the upper housing (11), A contact spring (21) is compressed between the movable terminal (2) and the insulating base (20) to apply contact pressure to the movable terminal (2), A limiting bracket (22) is fixed to the insulating base (20) and limits the direction and distance of movement of the movable terminal (2) relative to the insulating base (20). The contactor according to claim 12, further comprising:

15. The coil assembly further comprises a coil yoke (3) and a coil frame (61) and a coil (62) wound around the coil frame (61), The contactor according to claim 14, wherein the bottom of the coil frame (61) is supported by the bottom plate (32) of the contactor yoke (3), and the magnetic plate (4) is located above the upper part of the coil frame (61).

16. A drive shaft (23) provided on the coil frame (61), wherein the upper end of the drive shaft (23) penetrates the magnetic plate (4) and extends into the arc extinguishing chamber (101). Furthermore, The contactor according to claim 15, wherein the upper end of the drive shaft (23) is fixed to the insulating base (20), and the insulating base (20) electrically insulates 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, wherein the insulating base (20) is directly injection molded onto the drive shaft (23) and the limiting bracket (22) by embedded injection molding, thereby forming an integrated component of the insulating base (20), the drive shaft (23), and the limiting bracket (22).

18. A stationary magnetic core (51) is located in the coil frame (61) and fixed to the magnetic plate (4), A movable magnetic core (52) is arranged in the coil frame (61) and is movable along the axial direction of the coil frame (61) and Furthermore, The contactor according to claim 16, wherein the drive shaft (23) penetrates the stationary magnetic core (51) and the movable magnetic core (52), and the lower end of the drive shaft (23) is connected to the movable magnetic core (52) and moves together with the movable magnetic core (52).

19. A return spring (24) is attached to the drive shaft (23) and is compressed between the stationary magnetic core (51) and the movable magnetic core (52). Furthermore, When the coil (62) is energized, the drive shaft (23) drives the movable terminal (2) to move from the open position to the closed position under the action of electromagnetic force. The contactor according to claim 18, wherein when the current to the coil (62) is released, the drive shaft (23) drives the movable terminal (2) to move from the closed position to the open position under the elastic restorative force of the return spring (24).

20. A magnetic tube (7) is fixed to the lower end of the coil frame (61). Furthermore, The contactor according to claim 18, wherein the bottom surface of the magnetic tube (7) is in contact with the bottom plate (32) of the contactor yoke (3), and the movable magnetic core (52) is movable within the magnetic tube (7).

21. The contactor according to claim 20, wherein the coil frame (61) is directly injection molded into the magnetic tube (7) by embedded injection molding, thereby forming an integrated component between the coil frame (61) and the magnetic tube (7).

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