Relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to a relay, which comprises a first shell and a yoke cylinder, and is characterized in that a first positioning part is arranged on a bottom plate of the first shell; the yoke cylinder is mounted in the first shell, a coil rack is arranged in the yoke cylinder, a first positioning matching part and a glue permeation hole are arranged at the cylinder bottom of the yoke cylinder, the first positioning matching part is arranged to deviate from the center of the yoke cylinder, and the first positioning matching part is matched with the first positioning part to limit the yoke cylinder to rotate around the axis of the yoke cylinder; the glue permeating holes are used for enabling a binder on the bottom plate to enter the space between the yoke iron cylinder and the coil rack, it is guaranteed that the first shell, the yoke iron cylinder and the coil rack can be tightly matched to form a whole, the resonance risk is reduced, and the anti-vibration performance of the relay is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic control devices, in particular to a relay. Background Art

[0002] A relay is an electronic control device that has a control system (also known as an input circuit) and a controlled system (also known as an output circuit). It is usually used in automatic control circuits. A relay is actually an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays the role of automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In the related art, the bottom of the yoke iron cylinder of the relay is glued to the outer casing for fixation, and relative rotation is likely to occur between the coil frame and the yoke iron cylinder, which in turn causes the yoke iron plate, insulating cover and other components in the outer casing to be loosely fixed. During the vibration process, resonance occurs due to the inability of the components to fit closely together, resulting in a decrease in the vibration performance of the product. Utility Model Content

[0004] The embodiment of the utility model provides a relay to improve the vibration resistance of the relay and reduce the risk of resonance.

[0005] The relay provided by the embodiment of the utility model includes a first shell and a yoke iron cylinder, the bottom plate of the first shell is provided with a first positioning portion; the yoke iron cylinder is installed inside the first shell, the inside of the yoke iron cylinder is provided with a coil frame, the bottom of the yoke iron cylinder is provided with a first positioning matching portion and a glue penetration hole, the first positioning matching portion is set away from the center of the yoke iron cylinder, the first positioning matching portion cooperates with the first positioning portion to limit the rotation of the yoke iron cylinder around its own axis; the glue penetration hole is used to allow the adhesive on the bottom plate to enter between the yoke iron cylinder and the coil frame.

[0006] According to some embodiments of the utility model, the relay further comprises a yoke plate, the yoke plate is located above the coil frame, a second positioning portion is provided on a side of the yoke plate close to the coil frame, and the second positioning portion is arranged offset from the center of the yoke plate;

[0007] A second positioning matching portion is provided on one side of the coil frame close to the yoke plate, and the second positioning matching portion matches with the second positioning portion to limit the rotation of the yoke plate relative to the coil frame.

[0008] According to some embodiments of the present invention, one of the second positioning portion and the second positioning matching portion is a positioning protrusion, and the other is a positioning hole.

[0009] According to some embodiments of the utility model, the relay further comprises an insulating seat, the insulating seat is arranged above the yoke iron plate, a third positioning portion is arranged on a side of the insulating seat close to the yoke iron plate, and the third positioning portion is arranged away from the center of the insulating seat;

[0010] The yoke plate is provided with a third positioning matching portion, and the third positioning matching portion matches with the third positioning portion to limit the rotation of the insulating seat relative to the yoke plate.

[0011] According to some embodiments of the present utility model, one of the third positioning portion and the third positioning matching portion is a positioning protrusion, and the other is a positioning hole.

[0012] According to some embodiments of the utility model, the cross-section of the insulating seat is in the shape of an oblong, the third positioning portion is a positioning hole, the positioning hole includes a first blind hole and a second blind hole, the first blind hole and the second blind hole are spaced apart along the length direction of the insulating seat; the third positioning matching portion is a positioning protrusion, the positioning protrusion includes a first sub-protrusion and a second sub-protrusion, the first sub-protrusion is limited to the first blind hole, and the second sub-protrusion is limited to the second blind hole.

[0013] According to some embodiments of the utility model, the relay also includes an insulating cover and a seal, the insulating cover having a first end and a second end arranged opposite to each other in the axial direction, the first end is equipped with a static contact, a frame piece is arranged between the second end and the yoke iron plate, the insulating cover is arranged on an end of the insulating seat away from the yoke iron plate, and the seal is located between the insulating cover and the insulating seat.

[0014] According to some embodiments of the utility model, the circumferential outer surface of the insulating seat is provided with an annular groove, and the sealing member is installed in the annular groove.

[0015] According to some embodiments of the utility model, an annular recess is provided on the end face of the second end of the insulating cover; the insulating seat is installed on the second end of the insulating cover, and an annular protrusion is provided on the circumferential outer surface of the insulating seat; the sealing member is pressed and fixed between the annular protrusion and the surface of the annular recess close to the first end.

[0016] According to some embodiments of the utility model, the annular recessed portion is a step-shaped recessed structure, which has a first surface and a second surface, the first surface abuts against the surface of the first end of the seal close to the insulating cover, and the distance between the edge of the second surface away from the first surface and the outer surface of the seal is greater than zero.

[0017] According to some embodiments of the utility model, the insulating seat includes a circumferential side wall and a base, the circumferential side wall is fixedly connected to the base, the annular protrusion is arranged on the outer surface of the circumferential side wall, the part of the circumferential side wall located at the annular protrusion away from the base is installed in the insulating cover, and the third positioning portion is arranged on the base.

[0018] According to some embodiments of the utility model, the relay also includes a frame and a magnet, and the magnet is fixedly mounted on the frame; a fourth positioning portion is provided at one end of the frame close to the yoke plate, and the yoke plate is provided with a fourth positioning matching portion, and the fourth positioning matching portion cooperates with the fourth positioning portion to limit the rotation of the frame relative to the yoke plate.

[0019] According to some embodiments of the present utility model, one of the fourth positioning portion and the fourth positioning matching portion is a positioning protrusion, and the other is a positioning hole.

[0020] According to some embodiments of the present utility model, the first positioning portion is a positioning protrusion, and the first positioning matching portion is a positioning hole; the second positioning portion is a positioning hole, and the second positioning matching portion is a positioning protrusion; the fourth positioning portion is a positioning protrusion, and the fourth positioning matching portion is a positioning hole.

[0021] According to some embodiments of the present utility model, the relay further includes a second housing, the second housing is fixedly connected to the first housing; the second housing includes a top plate, the top plate is provided with a through hole for the static contact to pass through, the top plate is provided with a guide portion on a surface close to the insulating cover, and a limiting boss is provided at one end of the guide portion close to the top plate;

[0022] A limiting notch is provided at the circumferential edge of one end of the frame away from the yoke plate, the guide portion is inserted into the limiting notch, and the limiting boss abuts against a surface of the frame away from the yoke plate.

[0023] According to some embodiments of the utility model, the top plate is provided with a socket;

[0024] The relay further comprises a conductive sheet and a plug-in terminal, wherein the conductive sheet is riveted to the frame, the conductive sheet is provided with a clamping portion, and the plug-in terminal passes through the insertion hole and is fixedly connected to the clamping portion.

[0025] According to some embodiments of the present utility model, the conductive sheet is provided with a limiting hole, the frame is provided with a limiting protrusion, and the limiting protrusion is limited to the limiting hole.

[0026] According to some embodiments of the utility model, the frame is a hollow structure with openings at both ends, the frame is installed on the outside of the insulating cover, and the frame has a first side wall and a second side wall arranged opposite to each other; the inner surface of the first side wall is provided with a first mounting groove, and the inner surface of the second side wall is provided with a second mounting groove; the magnetic steel includes a first magnetic steel and a second magnetic steel, the first magnetic steel is fixedly installed in the first mounting groove, and the second magnetic steel is fixedly installed in the second mounting groove.

[0027] According to some embodiments of the present invention, at least one groove wall of the first installation groove is provided with a first convex rib, and at least one groove wall of the second installation groove is provided with a second convex rib.

[0028] According to some embodiments of the utility model, a fifth positioning portion is provided on one side of the coil frame close to the bottom of the yoke cylinder, and a fifth positioning matching portion is provided at the bottom of the yoke cylinder. The fifth positioning matching portion cooperates with the fifth positioning portion to limit the rotation of the coil frame relative to the yoke cylinder.

[0029] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0030] The relay provided by the embodiment of the utility model, when the yoke cylinder is assembled into the interior of the first shell, the yoke cylinder and the first shell are not only fixed by bonding with an adhesive, but also restricted from rotating around its own axis by the cooperation between the first positioning matching portion and the first positioning portion, thereby achieving fixation between the yoke cylinder and the first shell; at the same time, the adhesive on the bottom plate of the first shell will enter between the yoke cylinder and the coil frame through the glue penetration hole, thereby achieving fixation between the coil frame and the yoke cylinder, that is, the first shell, the yoke cylinder and the coil frame can achieve a tight fit to form a whole, thereby reducing the risk of resonance and improving the vibration resistance of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 What is shown is a schematic diagram of the structure of a relay provided in an embodiment of the utility model;

[0032] Figure 2 Shown is an exploded view of a relay provided by an embodiment of the utility model;

[0033] Figure 3 Shown is a front view of a relay provided by an embodiment of the utility model;

[0034] Figure 4 It shows Figure 3 A cross-sectional view along line AA;

[0035] Figure 5 Shown is a right side view of a relay provided by an embodiment of the utility model;

[0036] Figure 6 It shows Figure 5 A cross-sectional view along line BB;

[0037] Figure 7 What is shown is a schematic diagram of the structure of a relay provided in an embodiment of the utility model (the first housing is not shown);

[0038] Figure 8 Shown is an exploded view of the second housing and the frame in the relay provided by the embodiment of the utility model;

[0039] Fig. 9 The figure shows a schematic diagram of the structure in which the first conductive sheet, the second conductive sheet and the frame of the relay provided by the embodiment of the utility model cooperate with each other;

[0040] Fig.10 What is shown is a schematic structural diagram of a first housing in a relay provided in an embodiment of the utility model;

[0041] Fig.11 Shown is a cross-sectional view of a first housing in a relay provided by an embodiment of the utility model;

[0042] Fig.12 Shown is a top view of a yoke iron cylinder in a relay provided by an embodiment of the utility model;

[0043] Fig.13 Shown is a top view of a coil frame in a relay provided by an embodiment of the utility model;

[0044] Fig.14 The figure shows a schematic diagram of the structure of the coil frame and the yoke iron plate in the embodiment of the utility model;

[0045] Fig.15 The figure shows a top view of the coil frame and the yoke iron plate in the embodiment of the utility model;

[0046] Fig.16 It shows Fig.15 A cross-sectional view along line CC;

[0047] Fig.17 The figure shows a schematic diagram of the structure of the frame and the yoke iron plate in the embodiment of the utility model;

[0048] Fig.18 The figure shows a top view of the frame and the yoke iron plate in the embodiment of the utility model;

[0049] Fig.19 It shows Fig.18 A cross-sectional view along line DD;

[0050] Fig. 20 What is shown is a schematic diagram of the structure of the yoke iron plate in the embodiment of the utility model;

[0051] Fig.21 What is shown is a schematic structural diagram of an insulating seat in an embodiment of the utility model;

[0052] Fig. 22 Shown is a structural schematic diagram of the insulating seat in another perspective of the embodiment of the utility model;

[0053] Fig.23 The figure shows a schematic diagram of the structure of the insulating seat and the sealing member in the embodiment of the utility model;

[0054] Fig.24 What is shown is a schematic structural diagram of an insulating cover in an embodiment of the utility model;

[0055] Fig.25 Shown is a cross-sectional view of an insulating cover in an embodiment of the utility model;

[0056] Fig.26 Shown is a cross-sectional view of the insulating seat, the sealing member, the insulating cover and the static contact in the embodiment of the utility model;

[0057] Fig. 27 What is shown is a schematic diagram of the structure of the frame in the embodiment of the utility model;

[0058] Fig.28 What is shown is a schematic diagram of the structure of the frame and the magnetic steel in the embodiment of the utility model;

[0059] Fig.29 Shown is a top view of a frame in an embodiment of the utility model;

[0060] Fig.30 It is shown that Fig.29 A cross-sectional view along line EE;

[0061] Fig.31 It is shown that Fig.30 Local zoom in Figure Ⅰ ;

[0062] Fig.32 It is shown that Fig.30 Local zoom in Figure II ;

[0063] Fig.33 What is shown is the front view of the frame in the embodiment of the utility model;

[0064] Fig.34 What is shown is a schematic structural diagram of a first conductive sheet in an embodiment of the utility model;

[0065] Fig.35 What is shown is a schematic structural diagram of the matching of the plug-in terminal and the conductive sheet in the embodiment of the utility model.

[0066] The following are the descriptions of the reference numerals:

[0067] 10-first housing; 11-first positioning protrusion; 20-yoke iron cylinder; 21-first positioning hole; 22-glue penetration hole; 23-fifth positioning hole; 30-coil frame; 31-first baffle; 311-fifth positioning protrusion; 32-second baffle; 321-second positioning protrusion; 33-winding shaft; 40-yoke iron plate; 41-second positioning hole; 42-first sub-protrusion; 43-second sub-protrusion; 44-fourth positioning hole; 50-insulating seat; 51-circumferential side wall; 511-annular protrusion; 512-annular groove; 52-base; 521-first blind hole; 522-second blind hole; 60-insulating cover; 601-first end; 602-second end; 61-mounting hole; 62-annular recess; 621-first surface; 622-second surface; 70-seal; 80-frame; 81a-first mounting groove; 811a-first groove wall; 812a-second groove wall; 813a-first rib; 81b-second mounting groove ;811b-second rib;82-first limiting edge;83-second limiting edge;84-fourth positioning protrusion;85-limiting notch;86-limiting protrusion;90a-first magnetic steel;90b-second magnetic steel;100-yoke iron clamp;101-arc plate portion;102-straight plate portion;200-second shell;201-top plate;2011-guide portion;2012-limiting boss;301-first conductive sheet;3011-first clamping portion;3012 -second clamping part; 3013-clamping groove; 3014-limiting hole; 302-second conductive sheet; 400-frame sheet; 500-metal shell; 610-static contact; 620-push rod; 630-moving spring sheet; 640-static iron core; 650-moving iron core; 660-first elastic member; 670-second elastic member; 680-insulating sleeve; 690-U-shaped bracket; 710-coil lead-out terminal; 721-normally open terminal; 722-normally closed terminal; 723-common terminal. DETAILED DESCRIPTION

[0068] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0069] See also Figures 1 to 35As shown, this embodiment provides a relay, including a first shell 10 and a yoke iron cylinder 20, the bottom plate of the first shell 10 is provided with a first positioning portion; the yoke iron cylinder 20 is installed inside the first shell 10, the inside of the yoke iron cylinder 20 is provided with a coil frame 30, the bottom of the yoke iron cylinder 20 is provided with a first positioning matching portion and a glue penetration hole 22, the first positioning matching portion is set offset from the center of the yoke iron cylinder 20, the first positioning matching portion cooperates with the first positioning portion to limit the yoke iron cylinder 20 from rotating around its own axis; the glue penetration hole 22 is used to allow the adhesive on the bottom plate of the first shell 10 to enter between the yoke iron cylinder 20 and the coil frame 30.

[0070] In the relay provided in the present embodiment, when the yoke cylinder 20 is assembled into the interior of the first shell 10, in addition to being bonded and fixed to the first shell 10 by the adhesive, the yoke cylinder 20 is also restricted from rotating around its own axis by the cooperation between the first positioning fitting portion and the first positioning portion, thereby achieving the fixation between the yoke cylinder 20 and the first shell 10; at the same time, the adhesive on the bottom plate of the first shell 10 will enter between the yoke cylinder 20 and the coil frame 30 through the glue penetration hole 22, thereby achieving the fixation between the coil frame 30 and the yoke cylinder 20, that is, the first shell 10, the yoke cylinder 20 and the coil frame 30 can achieve a tight fit to form a whole, thereby reducing the risk of resonance and improving the vibration resistance of the relay.

[0071] In one embodiment, see Figure 6 , Fig.10 and Fig.12 As shown, the first positioning portion is a first positioning protrusion 11, and the first positioning matching portion is a first positioning hole 21. Exemplarily, the first positioning hole 21 can be a through hole.

[0072] In other embodiments, the first positioning portion may also be a blind hole, and correspondingly, the first positioning matching portion is a positioning protrusion.

[0073] In one embodiment, a fifth positioning portion is provided on one side of the coil frame 30 close to the bottom of the yoke cylinder 20, and a fifth positioning matching portion is provided at the bottom of the yoke cylinder 20. The fifth positioning matching portion cooperates with the fifth positioning portion to limit the rotation of the coil frame 30 relative to the yoke cylinder 20.

[0074] In this embodiment, see Figure 6 , Fig.12 and Fig.16 As shown, the fifth positioning portion may be a fifth positioning protrusion 311, and the fifth positioning matching portion may be a fifth positioning hole 23. Exemplarily, the fifth positioning hole 23 is a through hole.

[0075] See also Fig.12As shown, the bottom of the yoke iron cylinder 20 is a circular plate-shaped structure. For example, there are two glue seepage holes 22 , which are arranged at intervals along the radial direction of the bottom of the yoke iron cylinder 20 .

[0076] Exemplarily, the distances between the centers of the two glue penetration holes 22 and the center of the cylinder bottom are equal, so that adhesives such as glue can be more evenly extended into the space between the coil frame 30 and the yoke cylinder 20 .

[0077] In one embodiment, see Fig.12 As shown, the number of the first positioning hole 21 and the fifth positioning hole 23 are both one, the distances between the centers of the first positioning hole 21 and the fifth positioning hole 23 and the center of the bottom of the cylinder are equal, and the line between the centers of the first positioning hole 21 and the fifth positioning hole 23 is perpendicular to the line between the centers of the two glue penetration holes 22.

[0078] It should be noted that the number and arrangement of the glue penetration holes 22 , the first positioning holes 21 and the fifth positioning holes 23 are not limited to the above one, and other schemes can also be selected according to actual production and processing needs.

[0079] In other embodiments, the fifth positioning portion may also be a positioning hole, and correspondingly, the fifth positioning matching portion is a positioning protrusion.

[0080] In one embodiment, see Figure 2 , Figure 4 , Fig.16 and Fig. 20 As shown, the relay also includes a yoke plate 40, which is located above the coil frame 30. A second positioning portion is provided on the side of the yoke plate 40 close to the coil frame 30, and the second positioning portion is arranged offset from the center of the yoke plate 40; a second positioning matching portion is provided on the side of the coil frame 30 close to the yoke plate 40, and the second positioning matching portion cooperates with the second positioning portion to limit the rotation of the yoke plate 40 relative to the coil frame 30, thereby forming the yoke plate 40, the coil frame 30, the first shell 10 and the yoke cylinder 20 into a whole, further reducing the number of individual components and reducing the risk of resonance.

[0081] For example, see Fig.13 As shown, the coil frame 30 includes a winding shaft 33 and a first baffle 31 and a second baffle 32 arranged at both ends of the winding shaft 33. A coil is wound on the winding shaft 33. The coil and the coil frame 30 together form a coil assembly, which is installed in the yoke iron cylinder 20. The first baffle 31 is in the shape of a circular ring, see Fig.16 As shown, the fifth positioning protrusion 311 is arranged on a side of the first baffle plate 31 away from the second baffle plate 32 , the second baffle plate 32 is provided with a supporting portion, a coil pin is arranged in the supporting portion, and the coil pin is connected to the coil.

[0082] The yoke plate 40 is an annular plate structure and is coaxially arranged with the winding shaft 33 . The outer contour edge of the yoke plate 40 includes a straight edge and a major arc edge. The major arc edge is substantially the same as the arc-shaped outer contour of the second baffle 32 .

[0083] In this embodiment, see Fig.13 and Fig. 20 As shown, the second positioning portion is a second positioning hole 41 , and illustratively, the second positioning hole 41 may be a through hole; and the second positioning matching portion is a second positioning protrusion 321 .

[0084] Exemplarily, the second positioning hole 41 is disposed on a side of the center of the yoke plate 40 away from the straight edge. The number of the second positioning holes 41 may be two, and the two positioning holes are spaced apart in a direction parallel to the straight edge.

[0085] The number of the second positioning protrusions 321 is also two. The two second positioning protrusions 321 are disposed on a side of the second baffle plate 32 away from the first baffle plate 31 . The two second positioning protrusions 321 respectively correspond to the two second positioning holes 41 one by one.

[0086] In other embodiments, the second positioning portion may also be a positioning protrusion, and correspondingly, the second positioning portion is a positioning hole.

[0087] In one embodiment, see Figure 2 , Fig.21 and Fig. 22 As shown, the relay also includes an insulating seat 50, which is arranged above the yoke plate 40. A third positioning portion is provided on the side of the insulating seat 50 close to the yoke plate 40, and the third positioning portion is arranged offset from the center of the insulating seat 50; the yoke plate 40 is provided with a third positioning matching portion, and the third positioning matching portion cooperates with the third positioning portion to limit the rotation of the insulating seat 50 relative to the yoke plate 40, thereby forming the insulating seat 50, the yoke plate 40, the coil frame 30, the first shell 10 and the yoke cylinder 20 into a whole, further reducing the number of individual components, reducing the risk of resonance, and further improving the vibration resistance of the relay.

[0088] In some embodiments, the third positioning portion is a third positioning hole. Exemplarily, the third positioning hole is a blind hole, and the third positioning matching portion is a third positioning protrusion.

[0089] See also Fig. 22 As shown, the cross-section of the insulating seat 50 is in the shape of an oblong, and the blind hole includes a first blind hole 521 and a second blind hole 522, and the first blind hole 521 and the second blind hole 522 are spaced apart along the length direction of the insulating seat 50; the third positioning protrusion includes a first sub-protrusion 42 and a second sub-protrusion 43, and the first sub-protrusion 42 is limited to the first blind hole 521, and the second sub-protrusion 43 is limited to the second blind hole 522.

[0090] In one embodiment, see Fig. 22 As shown, the insulating seat 50 includes a circumferential side wall 51 and a base 52, the circumferential side wall 51 is fixedly connected to the base 52, the base 52 is an oblong plate-shaped structure, and the first blind hole 521 and the second blind hole 522 are arranged at intervals along the length direction of the base 52. Fig.14 and Fig. 20 As shown, the first sub-protrusion 42 and the second sub-protrusion 43 are both arranged on a side of the yoke plate 40 away from the coil frame 30 .

[0091] Exemplarily, the shapes of the first sub-protrusion 42 and the second sub-protrusion 43 are both cylindrical, and the first blind hole 521 and the second blind hole 522 are respectively adapted to the shapes of the first sub-protrusion 42 and the second sub-protrusion 43 .

[0092] In other embodiments, the third positioning portion may also be a positioning protrusion, and correspondingly, the third positioning matching portion is a positioning hole.

[0093] The insulating seat 50 may be made of plastic and formed in one piece by injection molding, that is, the circumferential side wall 51 and the base 52 are formed in one piece.

[0094] In one embodiment, see Figure 2 , Figure 4 , Figure 24 to Figure 26 As shown, the relay also includes an insulating cover 60 and a sealing member 70. The insulating cover 60 has a first end 601 and a second end 602 which are axially opposite to each other. The first end 601 is provided with a stationary contact 610. A frame piece 400 is provided between the second end 602 and the yoke iron plate 40. The insulating cover 60 is provided at one end of the insulating seat 50 away from the yoke iron plate 40. The sealing member 70 is located between the insulating cover 60 and the insulating seat 50.

[0095] There are two static contacts 610. The first end of the insulating cover 60 is provided with two mounting holes 61, and each mounting hole 61 is installed with a static contact 610. The second end of the insulating cover 60 is an open end, and the end of the insulating seat 50 away from the yoke iron plate 40 is installed in the open end.

[0096] In some embodiments, the insulating cover 60 may be a ceramic cover. A metallized layer is disposed on the end surface of the second end of the ceramic cover to connect with the metal frame 400. The cross-section of the ceramic cover is an oblong shape, and the cross-section of the ceramic cover matches the shape of the base 52 of the insulating seat 50 for easy installation.

[0097] In one embodiment, see Fig.25 and Fig.26As shown, the end face of the second end 602 of the insulating cover 60 is provided with an annular recess 62; the insulating seat 50 is installed on the second end of the insulating cover 60, and the circumferential outer surface of the insulating seat 50 is provided with an annular protrusion 511; along the axial direction of the insulating cover, the sealing member 70 is pressed and fixed between the annular protrusion 511 and the annular recess 62.

[0098] By pressing and fixing the seal 70 between the annular protrusion 511 and the annular recess 62 along the axial direction of the insulating cover, a tight fit between the insulating seat 50, the seal 70 and the insulating cover 60 in the axial direction is achieved. In this way, the dimensional accuracy requirements of the insulating cover 60 are relatively low. Even if there is a gap between the circumferential inner wall of the insulating cover 60 and the insulating seat 50, reliable sealing can be achieved, effectively preventing metal splashes on the inner wall of the insulating cover 60 from contacting the frame piece 400, thereby blocking the conduction path between the static contact 610 and the frame piece 400, thereby improving the insulation performance of the relay.

[0099] In this embodiment, the annular protrusion 511 is disposed on the outer surface of the circumferential side wall 51 , and a portion of the circumferential side wall 51 located away from the base 52 is mounted on the second end of the insulating cover 60 .

[0100] In one embodiment, see Fig.25 As shown, the annular recessed portion 62 is a stepped recessed structure having a first surface 621 and a second surface 622, the first surface 621 abuts against the surface of the first end of the seal 70 close to the insulating cover 60, and the distance between the edge of the second surface 622 away from the first surface 621 and the outer surface of the seal 70 is greater than zero.

[0101] Exemplarily, the first surface 621 is an oblong ring-shaped plane, the portion where the first surface 621 intersects with the set plane is a straight line segment, the second surface 622 is a curved surface surrounding the edge of the outer ring set on the oblong ring-shaped plane, the portion where the second surface 622 intersects with the set plane is an oblique line segment, the oblique line segment and the straight line segment have a common end 723 point, the angle formed between the oblique line segment and the straight line segment is an obtuse angle, wherein the set plane is a plane parallel to the axis of the insulating cover 60 and intersecting with the insulating cover 60.

[0102] In a set plane, the vertical distance between the end of the oblique line segment away from the straight line segment and the outer surface of the seal 70 is greater than zero, so that it is easy to assemble the insulating cover 60 and the insulating seat 50 with the seal 70.

[0103] In one embodiment, see Fig.21 and Fig. 22As shown, the circumferential outer surface of the insulating seat 50 is provided with an annular groove 512, and the sealing member 70 is installed in the annular groove 512. The annular groove 512 can be an oblong groove-shaped structure. Exemplarily, the sealing member 70 can be a sealing ring, which is installed in the annular groove 512, wherein a part of the sealing ring is located inside the annular groove 512, and another part is located outside the annular groove 512, so as to be in close contact with the first surface 621 of the annular recessed portion 62 to achieve sealing.

[0104] In one embodiment, see Fig.21 and Fig.26 As shown, the surface of the annular protrusion 511 close to the annular recess 62 is coplanar with the groove wall of the annular groove 512 away from the annular recess 62. In this way, the contact area between the annular protrusion 511 and the seal 70 can be larger, and the seal 70 and the annular protrusion 511 can be ensured to form a surface contact, thereby preventing the seal 70 from being damaged and failing due to the extrusion of the corners or bosses, thereby extending the service life of the seal 70. At the same time, it is also convenient to process and shape the insulating seat 50, thereby improving production efficiency and reducing production costs.

[0105] Since the third positioning matching portion cooperates with the third positioning portion, the stability of the insulating seat 50 can be ensured, thereby ensuring that the insulating seat 50, the sealing member 70 and the insulating cover 60 are closely matched, and ensuring that the relay has good insulation performance.

[0106] Fig.17 The structure diagram of the frame and the yoke iron plate in the embodiment of the utility model is shown. It should be understood that: Fig.17 The frame and yoke plate in the figure are in an inverted state to facilitate the illustration of the structure in which the yoke plate and the frame cooperate. Figure 2 , Figure 6 , Fig.17 and Fig.28 As shown, the relay also includes a frame 80 and a magnet, which is fixedly mounted on the frame 80, thereby improving the installation and fixing strength of the magnet; the frame 80 is located on the side of the yoke plate 40 away from the coil frame 30, and a fourth positioning portion is provided at one end of the frame 80 close to the yoke plate 40, and the yoke plate 40 is provided with a fourth positioning matching portion, and the fourth positioning matching portion cooperates with the fourth positioning portion to limit the rotation of the frame 80 relative to the yoke plate 40, thereby preventing the magnet from moving with the frame 80, further reducing the risk of resonance, and improving the overall stability of the relay.

[0107] In some embodiments, the fourth positioning portion is a fourth positioning protrusion 84 , and the fourth positioning matching portion is a fourth positioning hole 44 .

[0108] For example, see Fig.19 and Fig. 20As shown, there are two fourth positioning protrusions 84, which are disposed on the lower surface of the frame 80. There are also two fourth positioning holes 44, which correspond to each other.

[0109] In other embodiments, the fourth positioning portion may also be a positioning hole, and correspondingly, the fourth positioning matching portion is a positioning protrusion.

[0110] In one embodiment, see Fig. 27 As shown, the frame 80 is a hollow structure with openings at both ends. The frame 80 is installed on the outside of the insulating cover 60, and the frame 80 has a first side wall and a second side wall that are arranged opposite to each other; the inner surface of the first side wall is provided with a first mounting groove 81a, and the inner surface of the second side wall is provided with a second mounting groove 81b; the magnetic steel includes a first magnetic steel 90a and a second magnetic steel 90b, the first magnetic steel 90a is fixedly installed in the first mounting groove 81a, and the second magnetic steel 90b is fixedly installed in the second mounting groove 81b, so that it can be ensured that the surface of the first magnetic steel 90a away from the bottom of the first mounting groove 81a can face the outer surface of the insulating cover 60, and the surface of the second magnetic steel 90b away from the bottom of the second mounting groove 81b can face the outer surface of the insulating cover 60, thereby making the first magnetic steel 90a and the second magnetic steel 90b fixed between the outer surface of the insulating cover 60 and the frame 80. In a high-vibration application environment (such as the military field), the first magnetic steel 90a and the second magnetic steel 90b are not prone to loosening or falling off, thereby ensuring the arc extinguishing effect and further improving the performance and service life of the relay.

[0111] It should be understood that, taking the first mounting groove 81a as an example, the first mounting groove 81a is arranged on the inner wall of the frame 80, the depth direction of the first mounting groove 81a is consistent with the thickness direction of the inner wall of the frame 80, the slot of the first mounting groove 81a is opened on the inner wall of the frame 80, the bottom of the first mounting groove 81a is opposite to the slot, and the shape of the mounting groove is adapted to the outer contour of the first magnetic steel 90a.

[0112] In one embodiment, the relay further comprises two yoke iron clips 100, see Figure 2 As shown, the two yoke clamps 100 each include an arc-shaped plate portion 101 and a straight plate portion 102 integrally formed at both ends of the arc-shaped plate portion 101. The two yoke clamps 100 are arranged around the outer periphery of the frame 80 from opposite sides of the frame 80. The straight plate portion 102 at one end of the two yoke clamps 100 that are close to each other corresponds to the first hollow portion and contacts the first magnetic steel 90a. The straight plate portion 102 at the other end of the two yoke clamps 100 that are close to each other corresponds to the second hollow portion and contacts the second magnetic steel 90b.

[0113] In one embodiment, in order to prevent the yoke clamp 100 from shifting or falling when subjected to vibration, the strength of the arc extinguishing magnetic field is ensured. Fig. 27 As shown, the circumferential surface of the frame 80 is provided with a first limiting edge 82 and a second limiting edge 83 , and the yoke clamp 100 is located between the first limiting edge 82 and the second limiting edge 83 .

[0114] When the relay is in a high vibration application environment, the yoke clamp 100 is limited by the first limiting edge 82 and the second limiting edge 83, and will not be significantly displaced, thereby reducing the risk of falling, thereby ensuring the strength of the arc extinguishing magnetic field.

[0115] In order to further improve the installation and fixing strength of the magnetic steel, glue can be poured on the top of the magnetic steel so that the magnetic steel is fixedly connected to the frame 80 and the yoke clamp 100 through adhesives such as glue, that is, the yoke clamp 100 is in indirect contact with the magnetic steel.

[0116] In one embodiment, at least one groove wall of the first installation groove 81a is provided with a first rib 813a so that the first magnetic steel 90a and the first installation groove 81a are interference-fitted; see Fig.29 and Fig.32 As shown, at least one groove wall of the second installation groove 81b is provided with a second rib 811b so that the second magnetic steel 90b is interference fit with the second installation groove 81b.

[0117] The technical solution of this embodiment is described in detail below by taking the cooperation between the first installation groove 81 a and the first magnetic steel 90 a as an example.

[0118] See also Fig. 27 , Fig.29 and Fig.31 As shown, the first mounting groove 81a has a first groove wall 811a and a second groove wall 812a which are arranged relatively along the axis of the frame 80. When the frame 80 and the insulating cover 60 are in the assembled state, the first groove wall 811a is close to the top of the insulating cover 60, and the first groove wall 811a and the second groove wall 812a are both provided with a first convex rib 813a. During assembly, the first magnetic steel 90a is pushed into the first mounting groove 81a along the groove opening of the first mounting groove 81a toward the groove bottom, and the first magnetic steel 90a is tightly matched with the first convex rib 813a provided on the first groove wall 811a and the second groove wall 812a to prevent the magnetic steel from shaking.

[0119] It should be noted that the configuration of the second convex rib 811b is substantially the same as that of the first convex rib 813a, and will not be described in detail herein.

[0120] In this embodiment, the frame 80 may be made of plastic.

[0121] In one embodiment, see Figure 2 and Figure 7As shown, the relay also includes a second shell 200, which is fixedly connected to the first shell 10; the second shell 200 includes a top plate 201, the top plate 201 is provided with a through hole for the static contact 610 to pass through, and the surface of the top plate 201 close to the insulating cover 60 is provided with a guide portion 2011, and one end of the guide portion 2011 close to the top plate 201 is provided with a limiting boss 2012; a limiting notch 85 is provided on the circumferential edge of one end of the frame 80 away from the yoke iron plate 40, the guide portion 2011 is inserted into the limiting notch 85, and the limiting boss 2012 abuts against the surface of the frame 80 away from the yoke iron plate 40.

[0122] Exemplarily, the second housing 200 is fixedly connected with the first housing 10 by clamping; there are two through holes, and the two through holes are respectively used for the two static contacts 610 to pass through. Figure 7 and Figure 8 As shown, there are two guide portions 2011, which are relatively arranged at the two ends of the top plate 201. Exemplarily, the two guide portions 2011 are arranged at the two ends of the top plate 201 along the arrangement direction of the two through holes, and the limiting boss 2012 is fixedly connected to the position of the guide portion 2011 close to the top plate 201; accordingly, there are also two limiting notches 85, which are both arranged on the circumferential edge of the end of the frame 80 away from the yoke iron plate 40, and the two limiting notches 85 are respectively matched with the two guide portions 2011.

[0123] Exemplarily, the guide part 2011 is generally in a semi-cylindrical structure, the arcuate surfaces of the two guide parts 2011 are arranged oppositely, and the surfaces of the two guide parts 2011 that are separated from each other are planes; the limiting boss 2012 is also generally in a semi-cylindrical structure, and the arcuate surface of the limiting boss 2012 protrudes from the arcuate surface of the guide part 2011; the limiting notch 85 is arcuate, and the arcuate surface of the limiting notch 85 is matched with the arcuate surface of the guide part 2011. During assembly, the two through holes of the second housing 200 are respectively aligned with the two static contacts 610, and the two guide parts 2011 are respectively aligned with the two limiting notches 85, and the second housing 200 is fixedly installed on the first housing 10. At this time, the end faces of the two limiting bosses 2012 away from the top plate 201 abut against the surface of the end of the frame 80 away from the yoke iron plate 40.

[0124] Through the cooperation of the two guide parts 2011 and the two limiting notches 85, relative rotation between the second shell 200 and the frame 80 can be prevented. Through the clamping of the second shell 200 and the first shell 10 and the abutment of the two limiting bosses 2012 with the surface of the frame 80 away from the yoke plate 40, the frame 80 can be pressed and fixed in the first shell 10, and then a certain pressure is applied to the yoke plate 40, the coil frame 30 and the yoke cylinder 20, so that the various components of the relay are combined into a whole, further improving the overall vibration resistance of the relay and meeting the high-reliability vibration resistance requirements.

[0125] In one embodiment, the top plate 201 is provided with a socket; the relay further includes a conductive sheet and a plug-in terminal, the conductive sheet is riveted to the frame 80, the conductive sheet is provided with a clamping portion, the plug-in terminal passes through the socket and is fixedly connected to the clamping portion.

[0126] By providing the conductive sheet on the frame 80 to reduce the arrangement of the wires, not only the difficulty of assembly is reduced, but also the risk of the wires being crushed can be reduced. At the same time, since the conductive sheet is provided with a clamping portion, during assembly, the plug-in terminal can be directly plugged and fixed to the clamping portion, thereby improving assembly efficiency.

[0127] In some embodiments, the conductive sheet is riveted to the frame 80. Exemplarily, both the conductive sheet and the frame 80 are provided with holes for the rivets to pass through.

[0128] During the riveting process, the conductive sheet is prone to rotate around the axis of the rivet, resulting in positional displacement. To limit the conductive sheet, refer to Fig.34 As shown, the conductive sheet is provided with a limiting hole 3014, and the limiting hole 3014 and the hole for the rivet to pass through are respectively located at different positions of the conductive sheet, see Fig. 9 , Fig.19 and Fig.33 As shown, the frame 80 is provided with a limiting protrusion 86 . Exemplarily, the limiting protrusion 86 is located on an end surface of the frame 80 away from the yoke iron plate 40 , and the limiting protrusion 86 is limited to the limiting hole 3014 .

[0129] During riveting, the limiting protrusion 86 is located in the limiting hole 3014, and the rivet passes through the holes on the conductive sheet and the frame 80 for the rivet to pass through. The limiting protrusion 86 and the rivet cooperate to play a limiting role, thereby preventing the position of the conductive sheet from shifting.

[0130] In one embodiment, see Figure 3 , Figure 7 and Fig. 9 As shown, the plug-in terminal includes a coil lead-out terminal 710; the conductive sheet includes a first conductive sheet 301, one end of the first conductive sheet 301 is connected to the coil lead-out terminal 710, and the other end of the first conductive sheet 301 is connected to the circuit board of the relay.

[0131] Exemplarily, there are two coil lead terminals 710 and two first conductive sheets 301 . One end of the two first conductive sheets 301 is respectively connected to the two coil lead terminals 710 , and the other ends of the two first conductive sheets 301 are connected to the circuit board of the relay.

[0132] In this embodiment, clamping parts are provided at both ends of the first conductive sheet 301 , and the two clamping parts are respectively named as the first clamping part 3011 and the second clamping part 3012 . The coil lead end 710 is plugged into the first clamping part 3011 , and the circuit board is plugged into the second clamping part 3012 .

[0133] In order to improve the stability of the first conductive sheet 301, see Fig.34 As shown, the first conductive sheet 301 is formed with a snap-in groove 3013, which is snap-into the edge of the frame 80, so that the position of the first conductive sheet 301 can be limited by the frame 80, which facilitates the subsequent riveting of the first conductive sheet 301 and the frame 80 and the assembly of the circuit board.

[0134] In one embodiment, the plug-in terminal further includes three auxiliary lead-out terminals, and the conductive sheet further includes three second conductive sheets 302. For example, see Fig.35 As shown, the three auxiliary lead-out terminals are respectively a normally open terminal 721, a normally closed terminal 722 and a common terminal 723, and the three second conductive sheets 302 are all provided with a clamping portion, and the normally open terminal 721, the normally closed terminal 722 and the common terminal 723 are respectively plugged into the clamping portions of the three second conductive sheets 302. The shapes of the three second conductive sheets 302 can be the same or different.

[0135] In one embodiment, see Figure 4 and Figure 6 As shown, the relay also includes a metal shell 500, a push rod 620, a moving reed 630, a static iron core 640 and a moving iron core 650. The yoke iron plate 40 is sealed and connected to the second end of the insulating cover 60 through the frame plate 400 to enclose a first vacuum chamber; the metal shell 500 is connected to the side of the yoke iron plate 40 away from the insulating cover 60 to form a second vacuum chamber; the yoke iron plate 40 is provided with a through hole for connecting the first vacuum chamber and the second vacuum chamber, and the static iron core 640 is fixedly connected to the hole wall of the through hole; the moving iron core 650 is located in the second vacuum chamber, and the moving reed 630 is located in the first vacuum chamber, one end of the push rod 620 is connected to the moving iron core 650, and the other end of the push rod 620 is connected to the moving reed 630; the moving iron core 650 can be attracted or separated from the static iron core 640 so that the moving contact on the moving reed 630 is in contact with or disconnected from the static contact on the static contact lead-out end.

[0136] In this embodiment, the movable spring piece 630 is connected to the push rod 620 through the first elastic member 660, and the first elastic member 660 is used to make the movable contact and the static contact in close contact. Specifically, an insulating sleeve 680 is provided at one end of the push rod 620 away from the movable iron core 650, and the first elastic member 660 can be a compression spring, one end of the first elastic member 660 is sleeved on the boss of the insulating sleeve 680, and the other end of the first elastic member 660 is sleeved on the protrusion on the lower surface of the movable spring piece 630, and the insulating sleeve 680 is provided with a U-shaped bracket 690, and the movable spring piece 630 and the first elastic member 660 are located in the space formed by the U-shaped bracket 690 and the insulating sleeve 680.

[0137] A second elastic member 670 is disposed between the moving iron core 650 and the stationary iron core 640, and the second elastic member 670 is used to reset the moving iron core 650. For example, the second elastic member 670 may be a compression spring.

[0138] During the relay closure process, the moving iron core 650 overcomes the elastic force generated by the second elastic member 670 after being affected by the electromagnetic force, driving the push rod 620 and the moving reed 630 to move upward. When the moving reed 630 contacts the static contact, the main circuit is turned on.

[0139] When the moving reed 630 contacts the static contact, the moving iron core 650 continues to move upward in the axial direction, and the two static contacts press the moving reed 630 downward, further compressing the first elastic member 660. After the first elastic member 660 continues to be compressed to a certain extent, the second elastic member 670 no longer deforms, and the moving iron core 650 stops moving, that is, the entire moving assembly stops moving. The process from the moment when the moving reed 630 just contacts the static contact to the moment when the entire moving assembly stops moving is the overtravel distance. The appropriate overtravel distance enables the relay to have a high rebound force when disconnected, speeds up the disconnection speed and arc extinguishing speed, and improves the safety of the relay.

[0140] Finally, it should be noted that: it is understandable that the various embodiments / implementations provided by the present utility model can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0141] In the embodiments of the utility model, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0142] In the description of the utility model embodiments, it needs to be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the utility model embodiments.

[0143] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0144] The above are only preferred embodiments of the utility model embodiments, and are not intended to limit the utility model embodiments. For those skilled in the art, the utility model embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model embodiments shall be included in the protection scope of the utility model embodiments.

Claims

1. A relay, characterized in that: It includes a first shell and a yoke iron cylinder, the bottom plate of the first shell is provided with a first positioning portion; the yoke iron cylinder is installed inside the first shell, the inside of the yoke iron cylinder is provided with a coil frame, the bottom of the yoke iron cylinder is provided with a first positioning matching portion and a glue penetration hole, the first positioning matching portion is set offset from the center of the yoke iron cylinder, the first positioning matching portion cooperates with the first positioning portion to limit the rotation of the yoke iron cylinder around its own axis; the glue penetration hole is used to allow the adhesive on the bottom plate to enter between the yoke iron cylinder and the coil frame.

2. The relay according to claim 1, characterized in that: It also includes a yoke plate, the yoke plate is located above the coil frame, a second positioning portion is provided on a side of the yoke plate close to the coil frame, and the second positioning portion is arranged away from the center of the yoke plate; A second positioning matching portion is provided on one side of the coil frame close to the yoke plate, and the second positioning matching portion matches with the second positioning portion to limit the rotation of the yoke plate relative to the coil frame.

3. The relay according to claim 2, characterized in that: One of the second positioning portion and the second positioning matching portion is a positioning protrusion, and the other is a positioning hole.

4. The relay according to claim 2, characterized in that: It also includes an insulating seat, which is arranged above the yoke plate, and a third positioning portion is arranged on one side of the insulating seat close to the yoke plate, and the third positioning portion is arranged away from the center of the insulating seat; The yoke plate is provided with a third positioning matching portion, and the third positioning matching portion matches with the third positioning portion to limit the rotation of the insulating seat relative to the yoke plate.

5. The relay according to claim 4, characterized in that: One of the third positioning portion and the third positioning matching portion is a positioning protrusion, and the other is a positioning hole.

6. The relay according to claim 5, characterized in that: The cross-section of the insulating seat is in the shape of an oblong; the third positioning portion is a positioning hole, which includes a first blind hole and a second blind hole, and the first blind hole and the second blind hole are spaced apart along the length direction of the insulating seat; the third positioning matching portion is a positioning protrusion, which includes a first sub-protrusion and a second sub-protrusion, and the first sub-protrusion is limited to the first blind hole, and the second sub-protrusion is limited to the second blind hole.

7. The relay according to claim 4, characterized in that: It also includes an insulating cover and a sealing member, wherein the insulating cover has a first end and a second end which are axially opposite to each other, the first end is provided with a static contact, a frame is provided between the second end and the yoke plate, the insulating cover is provided at an end of the insulating seat away from the yoke plate, and the sealing member is located between the insulating cover and the insulating seat.

8. The relay according to claim 7, characterized in that: The circumferential outer surface of the insulating seat is provided with an annular groove, and the sealing member is installed in the annular groove.

9. The relay according to claim 7, characterized in that: The end surface of the second end of the insulating cover is provided with an annular recessed portion; the insulating seat is installed at the second end of the insulating cover, and the circumferential outer surface of the insulating seat is provided with an annular protrusion; the sealing member is pressed and fixed between the annular protrusion and the surface of the annular recessed portion close to the first end.

10. The relay according to claim 9, characterized in that: The annular recessed portion is a stepped recessed structure having a first surface and a second surface, the first surface abutting against a surface of the seal close to the first end of the insulating cover, and the distance between the edge of the second surface away from the first surface and the outer surface of the seal is greater than zero.

11. The relay according to claim 9, characterized in that: The insulating seat includes a circumferential side wall and a base, the circumferential side wall is fixedly connected to the base, the annular protrusion is arranged on the outer surface of the circumferential side wall, the part of the circumferential side wall located on the annular protrusion away from the base is installed in the insulating cover, and the third positioning portion is arranged on the base.

12. The relay according to claim 7, characterized in that: It also includes a frame and a magnet, which is fixedly mounted on the frame; a fourth positioning portion is provided at one end of the frame close to the yoke plate, and the yoke plate is provided with a fourth positioning matching portion, and the fourth positioning matching portion cooperates with the fourth positioning portion to limit the frame from rotating relative to the yoke plate.

13. The relay according to claim 12, characterized in that: One of the fourth positioning portion and the fourth positioning matching portion is a positioning protrusion, and the other is a positioning hole.

14. The relay according to claim 13, characterized in that: The first positioning portion is a positioning protrusion, and the first positioning matching portion is a positioning hole; the second positioning portion is a positioning hole, and the second positioning matching portion is a positioning protrusion; the fourth positioning portion is a positioning protrusion, and the fourth positioning matching portion is a positioning hole.

15. The relay according to claim 12, characterized in that: It also includes a second shell, which is fixedly connected to the first shell; the second shell includes a top plate, the top plate is provided with a through hole for the static contact to pass through, the top plate is provided with a guide portion on a surface close to the insulating cover, and a limiting boss is provided at one end of the guide portion close to the top plate; A limiting notch is provided at the circumferential edge of one end of the frame away from the yoke plate, the guide portion is inserted into the limiting notch, and the limiting boss abuts against a surface of the frame away from the yoke plate.

16. The relay according to claim 15, characterized in that The top plate is provided with a socket; The relay further comprises a conductive sheet and a plug-in terminal, wherein the conductive sheet is riveted to the frame, the conductive sheet is provided with a clamping portion, and the plug-in terminal passes through the insertion hole and is fixedly connected to the clamping portion.

17. The relay according to claim 16, characterized in that: The conductive sheet is provided with a limiting hole, and the frame is provided with a limiting protrusion, and the limiting protrusion is limited to the limiting hole.

18. The relay according to any one of claims 13 to 17, characterized in that: The frame is a hollow structure with openings at both ends, and is installed on the outside of the insulating cover. The frame has a first side wall and a second side wall that are arranged opposite to each other; the inner surface of the first side wall is provided with a first mounting groove, and the inner surface of the second side wall is provided with a second mounting groove; the magnetic steel includes a first magnetic steel and a second magnetic steel, the first magnetic steel is fixedly installed in the first mounting groove, and the second magnetic steel is fixedly installed in the second mounting groove.

19. The relay according to claim 18, characterized in that At least one groove wall of the first installation groove is provided with a first convex rib, and at least one groove wall of the second installation groove is provided with a second convex rib.

20. The relay according to any one of claims 1 to 17, characterized in that: A fifth positioning portion is provided on one side of the coil frame close to the bottom of the yoke cylinder, and a fifth positioning matching portion is provided at the bottom of the yoke cylinder. The fifth positioning matching portion matches with the fifth positioning portion to limit the rotation of the coil frame relative to the yoke cylinder.

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