Relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to an arc extinguishing mechanism and a relay. The arc extinguishing mechanism comprises a frame and magnetic steel, the frame is of a hollow structure with two open ends, an installation groove is formed in the inner wall of the frame, and the magnetic steel is fixedly installed in the installation groove. The frame is arranged, the mounting groove is formed in the inner wall of the frame, and the magnetic steel is fixedly mounted in the mounting groove, so that the mounting and fixing strength of the magnetic steel is improved, the frame is mounted outside an insulating cover of a relay during use, and the surface, deviating from the bottom of the mounting groove, of the magnetic steel can face the insulating cover; therefore, the magnetic steel is fixed between the outer surface of the insulating cover and the frame, the magnetic steel is not easy to loosen and fall off in a high-vibration application environment, and the arc extinguishing effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of electronic control device technology, and more specifically, to an arc extinguishing mechanism and a relay. Background Technology

[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), and is commonly used in automatic control circuits. Essentially, a relay is an "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic adjustment, safety protection, and circuit switching in circuits.

[0003] High-voltage DC relays are a type of relay. Most existing high-voltage DC relays employ a magnetic blowout arc-extinguishing mechanism with magnets as the main component during load breaking. However, in these technologies, the magnets suffer from insufficient installation strength and poor vibration resistance, making them prone to loosening and detachment in high-vibration environments. Utility Model Content

[0004] This utility model provides an arc-extinguishing mechanism and a relay to improve the installation strength of the magnet and the overall vibration resistance of the relay.

[0005] The arc-extinguishing mechanism provided in this embodiment of the utility model includes a frame and a magnet. The frame has a hollow structure with openings at both ends. The inner wall of the frame is provided with a mounting groove, and the magnet is fixedly installed in the mounting groove.

[0006] According to some embodiments of the present invention, the relay further includes a yoke clip, which is arranged around the outer periphery of the frame;

[0007] The bottom of the mounting groove is provided with a hollowed-out portion, and the part of the yoke clamp corresponding to the hollowed-out portion can contact the magnet.

[0008] According to some embodiments of the present invention, at least one wall of the mounting groove is provided with a first rib so that the magnet is interference-fitted with the mounting groove.

[0009] According to some embodiments of the present invention, the first rib extends along the depth direction of the mounting groove, and the end of the first rib near the opening of the mounting groove has a guide slope.

[0010] According to some embodiments of the present invention, the outer surface of the yoke clamp is provided with a second rib, which is used to make the yoke clamp and the housing interference fit.

[0011] According to some embodiments of the present invention, the circumferential surface of the frame is provided with a first limiting edge and a second limiting edge, and the yoke clamp is located between the first limiting edge and the second limiting edge.

[0012] According to some embodiments of the present invention, the magnet includes a first magnet and a second magnet, and the mounting groove includes a first mounting groove and a second mounting groove; the frame has a first sidewall and a second sidewall disposed opposite to each other, the first mounting groove is disposed on the inner surface of the first sidewall, and the second mounting groove is disposed on the inner surface of the second sidewall; the first magnet is fixedly mounted in the first mounting groove, and the second magnet is fixedly mounted in the second mounting groove;

[0013] The bottom of the first mounting groove is provided with a first hollow part, and the bottom of the second mounting groove is provided with a second hollow part. The part of the yoke clamp corresponding to the first hollow part can contact the first magnet, and the part of the yoke clamp corresponding to the second hollow part can contact the second magnet.

[0014] The relay provided in this embodiment of the utility model includes an insulating cover and the arc extinguishing mechanism. The insulating cover is installed in the inner cavity of the frame, and the surface of the magnet facing away from the bottom of the mounting groove is in contact with the outer surface of the insulating cover.

[0015] According to some embodiments of the present invention, the insulating cover has a first end and a second end arranged opposite to each other along the axial direction, and a stationary contact is installed on the first end;

[0016] The relay also includes a yoke plate and a frame plate, wherein the yoke plate is sealed to the second end of the insulating cover via the frame plate;

[0017] The frame is provided with a positioning part, and the yoke plate is provided with a positioning mating part. The positioning mating part cooperates with the positioning part to restrict the frame from rotating relative to the yoke plate.

[0018] According to some embodiments of this utility model, one of the positioning part and the positioning mating part is a positioning protrusion, and the other is a positioning hole.

[0019] According to some embodiments of the present invention, the relay further includes a first housing and a second housing, the arc extinguishing mechanism and the insulating cover are both installed in the first housing; the second housing is connected to the first housing, the second housing is provided with a limiting part, the frame is provided with a limiting mating part, the limiting mating part cooperates with the limiting part to press and fix the frame in the first housing.

[0020] According to some embodiments of the present invention, the second housing includes a top plate, the top plate being provided with a through hole for the stationary contact to pass through, the limiting part being provided on the side of the top plate near the insulating cover, and the limiting mating part being provided on the circumferential edge of the frame at the end away from the yoke plate.

[0021] According to some embodiments of the present invention, the limiting part includes a guide part and a limiting boss, and the limiting boss is fixedly connected to the guide part near the top plate.

[0022] The limiting mating part is a limiting notch, the guide part is inserted into the limiting notch, and the limiting boss abuts against the surface of the frame away from the yoke plate.

[0023] According to some embodiments of this utility model, the top plate is provided with an insertion hole;

[0024] The relay also includes a conductive sheet and a plug-in terminal. The conductive sheet is fixedly connected to the frame and has a clamping part. The plug-in terminal passes through the socket and is fixedly connected to the clamping part.

[0025] According to some embodiments of the present invention, 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 this utility model, the insertion terminal includes a coil lead-out end; the conductive sheet includes a first conductive sheet, one end of the first conductive sheet is connected to the coil lead-out end, the other end of the first conductive sheet is connected to the circuit board of the relay, and the first conductive sheet has a snap-fit ​​groove, which is connected to the edge of the frame.

[0027] According to some embodiments of the present invention, the relay further includes an auxiliary lead-out pin and an auxiliary spring, the auxiliary lead-out pin being disposed on the top of the insulating cover; the plug-in terminal further includes an auxiliary lead-out end, the conductive sheet further includes a second conductive sheet, one end of the second conductive sheet being connected to the auxiliary spring through the auxiliary lead-out pin, and the other end of the second conductive sheet being connected to the auxiliary lead-out end.

[0028] According to some embodiments of the present invention, the frame is provided with a clamping structure, and the clamping structure is provided with a slot.

[0029] The relay also includes a circuit board, which is clamped and fixed in the slot.

[0030] One embodiment of the above-described utility model has at least the following advantages or beneficial effects:

[0031] (1) The arc-extinguishing mechanism provided in this embodiment of the present invention improves the installation and fixing strength of the magnet by setting a frame and setting an installation groove on the inner wall of the frame to fix the magnet in the installation groove. In use, the frame is installed outside the insulating cover of the relay to ensure that the surface of the magnet facing away from the bottom of the installation groove faces the insulating cover, thereby fixing the magnet between the outer surface of the insulating cover and the frame. In high-vibration application environments, the magnet is less likely to loosen or fall off, ensuring the arc-extinguishing effect and thus improving the performance and service life of the relay.

[0032] (2) The arc extinguishing mechanism provided in this utility model embodiment has a positioning part on the frame. When the arc extinguishing mechanism is applied to a relay, the relay's yoke plate is provided with a positioning and fitting part. The positioning and fitting part cooperates with the positioning part to restrict the frame from rotating relative to the yoke plate, thereby preventing the magnet from moving with the frame and further improving the overall stability of the arc extinguishing mechanism.

[0033] (3) The arc extinguishing mechanism provided in this utility model embodiment has a frame with a limiting fit part. The arc extinguishing mechanism is applied to the relay. The relay includes a first housing and a second housing. The arc extinguishing mechanism is installed in the first housing. The second housing is connected to the first housing. The second housing has a limiting part. The limiting fit part cooperates with the limiting part to press and fix the frame in the first housing, which further improves the overall vibration resistance of the relay and meets the high reliability vibration resistance requirements.

[0034] (4) The arc extinguishing mechanism provided in this utility model embodiment is applied to a relay. The conductive sheet in the relay can be fixedly connected to the frame. By setting the conductive sheet on the frame, the arrangement of the wires is reduced, which not only reduces the assembly difficulty, but also reduces the risk of the wires being crushed. Attached Figure Description

[0035] Figure 1 The diagram shown is a structural schematic of the arc-extinguishing mechanism provided in an embodiment of this utility model;

[0036] Figure 2 The diagram shown is a schematic diagram of another structure of the arc-extinguishing mechanism provided in this embodiment of the present invention;

[0037] Figure 3 The diagram shown is a structural schematic of the frame in the arc-extinguishing mechanism provided in this embodiment of the present invention;

[0038] Figure 4 What is shown is Figure 3 A magnified view of a section at point I;

[0039] Figure 5 The image shown is a top view of the frame in an embodiment of this utility model;

[0040] Figure 6What is shown is Figure 5 A sectional view along line AA;

[0041] Figure 7 What is shown is Figure 6 Enlarged view of a section at point II;

[0042] Figure 8 What is shown is Figure 6 Enlarged view of a section at point III;

[0043] Figure 9 The image shown is a front view of the frame in an embodiment of this utility model;

[0044] Figure 10 The image shown is a left view of the frame in an embodiment of this utility model;

[0045] Figure 11 The diagram shown is a structural schematic of the relay provided in an embodiment of this utility model;

[0046] Figure 12 The image shown is a right view of the relay provided in an embodiment of this utility model;

[0047] Figure 13 What is shown is Figure 12 A sectional view along line BB;

[0048] Figure 14 The image shown is a front view of a relay provided in an embodiment of this utility model;

[0049] Figure 15 What is shown is Figure 14 A cross-sectional view along the CC line;

[0050] Figure 16 The diagram shown is a structural schematic of a relay provided in an embodiment of the present invention (the first housing is not shown).

[0051] Figure 17 The diagram shown is an exploded view of the second shell and frame;

[0052] Figure 18 The diagram shown is a structural schematic of a relay provided in an embodiment of the present invention (the first housing, the second housing, and the plug-in terminals are not shown).

[0053] Figure 19 What is shown is Figure 18 Top view;

[0054] Figure 20 The diagram shown is a structural schematic of the first conductive piece in the relay provided in this embodiment of the present invention;

[0055] Figure 21The diagram shown is a structural schematic of the auxiliary spring in the relay provided in this embodiment of the present invention;

[0056] Figure 22 The image shown is a bottom view of the frame and yoke plate in an embodiment of this utility model.

[0057] Figure 23 What is shown is Figure 22 A cross-sectional view along line DD.

[0058] The annotations in the attached figures are explained as follows:

[0059] 10-Frame; 11a-First mounting groove; 111a-First groove wall; 1111a-Glue penetration notch; 112a-Second groove wall; 113a-First rib; 1131a-Guide slope; 11b-Second mounting groove; 12-First limiting edge; 13-Second limiting edge; 14-Positioning protrusion; 15-Limiting notch; 16-Limiting protrusion; 17-Card slot; 18-Wire passage groove; 20a-First magnet; 20b-Second magnet; 30-Yoke clamp; 31-Arc-shaped plate; 311-Second rib; 32-Straight plate; 41-Insulating cover; 42-Insulating seat; 43-Seal; 50-Yoke plate; 51-Positioning hole; 60-Frame piece; 71-Static iron core; 72-Moving iron core; 73-Push rod; 74- 75-Moving spring; 76-Stationary contact; 81-Coil frame; 82-First housing; 82-Second housing; 821-Top plate; 8211-Guide part; 8212-Limiting boss; 90-Circuit board; 101-Normally open terminal; 102-Normally closed terminal; 103-Common terminal; 104-Coil lead-out terminal; 201-Normally open conductive sheet; 202-Normally closed conductive sheet; 203-Common conductive sheet; 204-First conductive sheet; 2041-First clamping part; 2042-Second clamping part; 2043-Snap-in groove; 2044-Limiting hole; 301-First auxiliary lead-out pin; 302-Second auxiliary lead-out pin; 303-Third auxiliary lead-out pin; 401-Normally open auxiliary stationary spring; 402-Normally closed auxiliary stationary spring; 403-Auxiliary moving spring. Detailed Implementation

[0060] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many 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 thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0061] See Figures 1 to 10As shown, this embodiment provides an arc extinguishing mechanism, including a frame 10 and a magnet. The frame 10 has a hollow structure with openings at both ends. The inner wall of the frame 10 is provided with a mounting groove, and the magnet is fixedly installed in the mounting groove.

[0062] The arc-extinguishing mechanism provided in this embodiment improves the installation strength of the magnet by setting a frame 10 and providing an installation groove on the inner wall of the frame 10 to fix the magnet in the installation groove. In use, the frame 10 is installed outside the insulating cover 41, ensuring that the surface of the magnet facing away from the bottom of the installation groove faces the outer surface of the insulating cover 41, thereby fixing the magnet between the outer surface of the insulating cover 41 and the frame 10. In high-vibration application environments (such as the military field), the magnet is less likely to loosen or fall off, ensuring the arc-extinguishing effect and thus improving the performance and service life of the relay.

[0063] It should be understood that the mounting groove is located on the inner wall of the frame 10, the depth direction of the mounting groove is consistent with the thickness direction of the inner wall of the frame 10, the opening of the mounting groove is opened on the inner wall of the frame 10, and the bottom of the mounting groove is opposite to the opening. The shape of the mounting groove is adapted to the outer contour of the magnet.

[0064] In one embodiment, the arc extinguishing mechanism further includes a yoke clamp 30, which is arranged around the outer periphery of the frame 10; the bottom of the mounting groove is provided with a hollow part, and the part of the yoke clamp 30 corresponding to the hollow part can contact the magnet.

[0065] The design of using a yoke clamp 30 to surround the magnet can prevent the magnetic field generated by the magnet from spreading outward and affecting the arc extinguishing effect. The yoke clamp 30 can be made of soft magnetic material, which can include, but is not limited to, iron, cobalt, nickel and their alloys.

[0066] To further improve the installation and fixing strength of the magnet, glue can be injected into the top of the magnet so that the magnet is fixedly connected to the frame 10 and the yoke clamp 30 by adhesives such as glue. In other words, the yoke clamp 30 and the magnet are in indirect contact.

[0067] In this embodiment, see Figure 1As shown, the magnets include a first magnet 20a and a second magnet 20b, and the mounting grooves include a first mounting groove 11a and a second mounting groove 11b. The frame 10 has a first sidewall and a second sidewall disposed opposite to each other. The first mounting groove 11a is disposed on the inner surface of the first sidewall, and the second mounting groove 11b is disposed on the inner surface of the second sidewall. The first magnet 20a is fixedly installed in the first mounting groove 11a, and the second magnet 20b is fixedly installed in the second mounting groove 11b. The bottom of the first mounting groove 11a is provided with a first hollow portion, and the bottom of the second mounting groove 11b is provided with a second hollow portion. The portion of the yoke clamp 30 corresponding to the first hollow portion can contact the first magnet 20a, and the portion of the yoke clamp 30 corresponding to the second hollow portion can contact the second magnet 20b.

[0068] See Figure 2 As shown, there are two yoke clips 30. Each yoke clip 30 includes an arc-shaped plate portion 31 and a straight plate portion 32 integrally formed at both ends of the arc-shaped plate portion 31. The two yoke clips 30 are arranged around the outer periphery of the frame 10 from opposite sides. The straight plate portion 32 at the close end of the two yoke clips 30 corresponds to the first hollow portion and contacts the first magnet 20a. The straight plate portion 32 at the other close end of the two yoke clips 30 corresponds to the second hollow portion and contacts the second magnet 20b.

[0069] In one embodiment, to prevent the yoke clamp 30 from shifting or falling off when subjected to vibration, and to ensure the strength of the arc-extinguishing magnetic field, see [reference needed]. Figure 2 As shown, the circumferential surface of the frame 10 is provided with a first limiting edge 12 and a second limiting edge 13, and the yoke clamp 30 is located between the first limiting edge 12 and the second limiting edge 13.

[0070] When the relay is in a high-vibration application environment, the yoke clamp 30 is limited by the first limiting edge 12 and the second limiting edge 13, and there will be no obvious displacement, reducing the risk of falling and thus ensuring the strength of the arc extinguishing magnetic field.

[0071] In one embodiment, at least one wall of the mounting groove is provided with a first rib 113a to allow the magnet to be interference-fitted with the mounting groove.

[0072] The technical solution of this embodiment will be described in detail below, taking the cooperation between the first mounting groove 11a and the first magnet 20a as an example.

[0073] See Figures 3 to 8As shown, the first mounting groove 11a has a first groove wall 111a and a second groove wall 112a arranged opposite to each other along the axis of the frame 10. When the arc extinguishing mechanism and the insulating cover 41 are in the assembled state, the first groove wall 111a is close to the top of the insulating cover 41. Both the first groove wall 111a and the second groove wall 112a are provided with first ribs 113a. During assembly, the first magnet 20a is pushed into the first mounting groove 11a from the groove opening toward the bottom of the groove. The first magnet 20a is tightly fitted with the first ribs 113a provided in the first groove wall 111a and the second groove wall 112a to prevent the magnet from shaking.

[0074] In one embodiment, the first rib 113a extends along the depth direction of the mounting groove, and one end of the first rib 113a near the opening of the mounting groove has a guide slope 1131a.

[0075] Taking the first protruding rib 113a provided on the second groove wall 112a as an example, see Figure 4 As shown, the first rib 113a extends along the depth direction of the first mounting groove 11a. The end of the first rib 113a near the opening of the first mounting groove 11a has a guide slope 1131a. By setting the guide slope 1131a, it is easier to push the first magnet 20a into the first mounting groove 11a, thereby reducing the wear caused by the first magnet 20a on the first rib 113a.

[0076] In one embodiment, see Figure 3 As shown, the first groove wall 111a has an adhesive penetration notch 1111a, which can be located in the middle of the first groove wall 111a. The surface of the first magnet 20a corresponding to the adhesive penetration notch 1111a is exposed to the outside, which facilitates the application of adhesives such as glue to the surface of the first magnet 20a, so that the adhesives such as glue can flow between the first magnet 20a and the yoke clamp 30.

[0077] In one embodiment, see Figure 2 As shown, the outer surface of the yoke clamp 30 is provided with a second rib 311, which is used to make the yoke clamp 30 and the housing interference fit.

[0078] For example, the second rib 311 is formed on the outer surface of the arc-shaped plate portion 31 of the yoke clamp 30 by stamping. After the arc-extinguishing mechanism is installed in the relay housing, the second rib 311 is interference-fitted with the inner wall of the housing to further prevent the yoke clamp 30 from loosening or shifting.

[0079] In this embodiment, the frame 10 can be made of plastic.

[0080] The arc extinguishing mechanism provided in this embodiment, by setting the frame 10, makes the magnet, yoke clamp 30 and frame 10 form a whole. In high vibration application scenarios, the entire arc extinguishing mechanism will not resonate, thus improving the overall vibration resistance performance.

[0081] See Figures 11 to 23 As shown, this embodiment also provides a relay, including an insulating cover 41 and an arc extinguishing mechanism provided in this embodiment. The insulating cover 41 is installed in the inner cavity of the frame 10, and the surface of the magnet facing away from the bottom of the mounting groove contacts the outer surface of the insulating cover 41.

[0082] The relay provided in this embodiment features a frame 10 with a mounting groove on its inner wall. The magnet is fixedly mounted in the mounting groove, improving the magnet's mounting strength. During use, the frame 10 is installed outside the insulating cover 41, ensuring that the surface of the magnet facing away from the bottom of the mounting groove contacts the outer surface of the insulating cover 41, thus fixing the magnet between the outer surface of the insulating cover 41 and the frame 10. In high-vibration applications, the magnet is less prone to loosening or falling off, ensuring effective arc extinguishing and thus improving the relay's performance and service life.

[0083] In one embodiment, see Figure 13 As shown, the relay also includes an insulating base 42 and a seal 43. The insulating cover 41 has a first end and a second end arranged opposite to each other along the axial direction. A stationary contact 75 is installed on the first end. The insulating cover 41 covers one end of the insulating base 42, and the seal 43 is located between the insulating cover 41 and the insulating base 42.

[0084] For example, the first end of the insulating cover 41 is provided with two mounting holes, each mounting hole housing a stationary contact 75, one stationary contact 75 serving as a current inflow terminal and the other stationary contact 75 serving as a current outflow terminal. The second end of the insulating cover 41 is an open end, and a portion of the insulating base 42 is fixedly mounted within the open end. The insulating base 42 can be made of plastic, and the insulating base 42 includes a circumferential sidewall and a base plate, the circumferential sidewall and the base plate being integrally formed by injection molding.

[0085] In some embodiments, the cross-sectional shape of the insulating cover 41 is oblong, and the cross-sectional shape of the insulating base 42 is adapted to the insulating cover 41 for easy installation.

[0086] For example, the insulating cover 41 can be a ceramic cover.

[0087] In this embodiment, see Figure 15As shown, the relay also includes a yoke plate 50 and a frame plate 60. The yoke plate 50 is sealed to the second end of the insulating cover 41 through the frame plate 60 to form a first vacuum chamber. A metal shell is connected to the side of the yoke plate 50 away from the insulating cover 41 to form a second vacuum chamber. The yoke plate 50 is provided with a through hole for connecting the first vacuum chamber and the second vacuum chamber. The relay also includes a stationary iron core 71, a moving iron core 72, a push rod 73, and a moving spring 74. The stationary iron core 71 is fixedly connected to the wall of the through hole. The moving iron core 72 is located in the second vacuum chamber, and the moving spring 74 is located in the first vacuum chamber. One end of the push rod 73 is connected to the moving iron core 72, and the other end of the push rod 73 is connected to the moving spring 74. The moving iron core 72 can be attracted or separated from the stationary iron core 71 so that the moving contact on the moving spring 74 contacts or disconnects from the stationary contact on the stationary contact 75.

[0088] For example, the bottom of the stationary contact 75 serves as the stationary contact point, and the two ends of the moving spring 74 along its length can serve as moving contacts, corresponding to the two stationary contacts respectively. The moving contacts at both ends of the moving spring 74 can protrude from other parts of the moving spring 74, or they can be flush with other parts.

[0089] It should be noted that the stationary contact can be integrally or separately disposed at the bottom of the stationary contact 75, and the moving contact can be integrally or separately disposed at both ends of the moving spring 74 along its length.

[0090] The frame 10 is provided with a positioning part, and the yoke plate 50 is provided with a positioning mating part. The positioning mating part cooperates with the positioning part to restrict the frame 10 from rotating relative to the yoke plate 50. This can prevent the magnet from moving with the frame 10 and further improve the overall stability of the arc extinguishing mechanism.

[0091] In some embodiments, the positioning part is a positioning protrusion 14, and the positioning mating part is a positioning hole 51.

[0092] For example, see Figure 9 As shown, there are two positioning protrusions 14, which are disposed on the lower surface of the frame 10. See also Figure 22 and Figure 23 As shown, there are also two positioning holes 51, and the two positioning holes 51 correspond one-to-one with the two positioning protrusions 14.

[0093] In other embodiments, the positioning part may also be a positioning hole, and correspondingly, the positioning mating part may be a positioning protrusion.

[0094] In one embodiment, see Figure 11As shown, the relay also includes a first housing 81 and a second housing 82. The arc extinguishing mechanism, the insulating cover 41, the insulating base 42 and the sealing element 43 are all installed in the first housing 81. The second housing 82 is connected to the first housing 81. The second housing 82 is provided with a limiting part. The frame 10 is provided with a limiting mating part. The limiting mating part cooperates with the limiting part to press and fix the frame 10 in the first housing 81.

[0095] For example, the first housing 81 and the second housing 82 are snapped together to form a housing. The second rib 311 on the outer surface of the yoke clamp 30 is interference-fitted with the first housing 81.

[0096] Since the second housing 82 is provided with a limiting part and the frame 10 is provided with a limiting mating part, when the first housing 81 and the second housing 82 are snapped together, the limiting mating part and the limiting part cooperate, thereby pressing and fixing the frame 10 inside the first housing 81, which further improves the overall vibration resistance performance of the relay and meets the high reliability vibration resistance requirements.

[0097] In one embodiment, see Figure 16 As shown, the second housing 82 includes a top plate 821, which has a through hole for the stationary contact 75 to pass through. A limiting part is provided on the side of the top plate 821 near the insulating cover 41, and a limiting mating part is provided on the circumferential edge of the frame 10 at the end away from the yoke plate 50.

[0098] For example, there are two through holes, each allowing one stationary contact 75 to pass through. There are also two limiting parts, positioned opposite each other at both ends of the top plate 821. For example, the two limiting parts are positioned along the arrangement direction of the two through holes at both ends of the top plate 821. Correspondingly, there are also two limiting mating parts, each located on the circumferential edge of the frame 10 away from the yoke plate 50, positioned opposite each other to correspond to the two limiting parts.

[0099] In one embodiment, see Figure 16 and Figure 17 As shown, the limiting part includes a guide part 8211 and a limiting boss 8212. The limiting boss 8212 is fixedly connected to the guide part 8211 near the top plate 821. The limiting mating part is a limiting notch 15. The guide part 8211 is inserted into the limiting notch 15, and the limiting boss 8212 abuts against the surface of the frame 10 away from the yoke plate 50.

[0100] For example, the guide portion 8211 is generally semi-cylindrical in shape, and the arc-shaped surfaces of the guide portions 8211 in the two limiting portions are arranged opposite each other, with the opposing surfaces of the guide portions 8211 in the two limiting portions being flat. The limiting boss 8212 is also generally semi-cylindrical in shape, and the arc-shaped surface of the limiting boss 8212 protrudes from the arc-shaped surface of the guide portion 8211. The limiting notch 15 is arc-shaped, and the arc-shaped surface of the limiting notch 15 is adapted to the arc-shaped surface of the guide portion 8211. During assembly, the two through holes of the second housing 82 are aligned with the two stationary contacts 75, and the two guide portions 8211 are aligned with the two limiting notches 15. The second housing 82 is then fixedly installed on the first housing 81. At this time, the end faces of the two limiting bosses 8212 away from the top plate 821 abut against the surface of the end of the frame 10 away from the yoke plate 50.

[0101] It should be noted that the structural form of the limiting part and the limiting mating part is not limited to the one mentioned above. Other forms of limiting parts and limiting mating parts can be selected according to actual production and processing needs, as long as they can achieve the functions of pressing and fixing the frame 10 and improving the overall structural stability of the relay.

[0102] In one embodiment, the top plate 821 is provided with a socket; the relay also includes a conductive sheet and a plug-in terminal, the conductive sheet is fixedly connected to the frame 10, the conductive sheet is provided with a clamping part, and the plug-in terminal passes through the socket and is fixedly connected to the clamping part.

[0103] By setting conductive plates on the frame 10, the number of wires is reduced, which not only lowers the assembly difficulty but also reduces the risk of wires being damaged by pressure. Furthermore, because the conductive plates have clamping parts, the insertion terminals can be directly plugged into and fixed to the clamping parts during assembly, improving assembly efficiency.

[0104] In some embodiments, the conductive sheet is riveted to the frame 10. Exemplarily, both the conductive sheet and the frame 10 are provided with holes for rivets to pass through.

[0105] During riveting, the conductive piece can easily rotate around the rivet's axis, causing positional misalignment. To limit the conductive piece's movement, see [link to relevant documentation]. Figure 20 As shown, the conductive sheet is provided with a limiting hole 2044. The limiting hole 2044 and the hole for the rivet to pass through are located at different positions on the conductive sheet. See [reference needed]. Figure 3 As shown, the frame 10 is provided with a limiting protrusion 16. For example, the limiting protrusion 16 is located on the end face of the frame 10 away from the yoke plate 50, and the limiting protrusion 16 is limited to the limiting hole 2044.

[0106] During riveting, the limiting protrusion 16 is located inside the limiting hole 2044. The rivet passes through the conductive sheet and the hole on the frame 10 for the rivet to pass through. The limiting protrusion 16 and the rivet cooperate to play a limiting role, thereby preventing the position of the conductive sheet from shifting.

[0107] In one embodiment, see Figure 12 , Figure 16 , Figure 18 , Figure 19 and Figure 20 As shown, the insertion terminal includes a coil lead-out terminal 104; the conductive sheet includes a first conductive sheet 204, one end of the first conductive sheet 204 is connected to the coil lead-out terminal 104, and the other end of the first conductive sheet 204 is connected to the circuit board 90 of the relay. The first conductive sheet 204 has a snap-fit ​​groove 2043, which is connected to the edge of the frame 10.

[0108] For example, there are two coil leads 104 and two first conductive pieces 204. One end of each first conductive piece 204 is connected to one coil lead 104, and the other end of each first conductive piece 204 is connected to the circuit board 90 of the relay.

[0109] In this embodiment, clamping portions are provided at both ends of the first conductive sheet 204. The two clamping portions are named the first clamping portion 2041 and the second clamping portion 2042, respectively. The coil lead-out end 104 is inserted into the first clamping portion 2041, and the circuit board 90 is inserted into the second clamping portion 2042.

[0110] Taking the first clamping part 2041 as an example, the first clamping part 2041 includes two elastic arms, which are symmetrically arranged along the width direction of the first conductive sheet 204. The two elastic arms and the portion of the first conductive sheet 204 located between the two elastic arms together form a groove-shaped structure. The width of the groove opening of the groove-shaped structure is smaller than the width of the groove bottom. The coil lead-out end 104 is inserted from the groove opening of the groove-shaped structure and clamped and fixed by the two elastic arms.

[0111] The free ends of the two elastic arms are formed with outwardly flared flanges to form guide flares, which facilitates the insertion of the coil lead 104 from the guide flares and its clamping and fixing by the two elastic arms, enabling rapid assembly while ensuring structural stability and reliability.

[0112] For example, the limiting hole 2044 is located on the first conductive sheet 204 corresponding to the first clamping part 2041, that is, the limiting hole 2044 is located at the bottom of the groove structure.

[0113] To improve the stability of the first conductive sheet 204, see [reference needed]. Figure 20As shown, the first conductive sheet 204 has a snap-fit ​​groove 2043, which snaps into the edge of the frame 10, thereby limiting the position of the first conductive sheet 204 by the frame 10, which facilitates the subsequent riveting of the first conductive sheet 204 to the frame 10 and the assembly of the circuit board 90.

[0114] In one embodiment, the relay further includes an auxiliary lead-out pin and an auxiliary spring, the auxiliary lead-out pin being disposed on the top of the insulating cover 41; the plug-in terminal further includes an auxiliary lead-out end, and the conductive sheet further includes a second conductive sheet, one end of the second conductive sheet being connected to the auxiliary spring via the auxiliary lead-out pin, and the other end of the second conductive sheet being connected to the auxiliary lead-out end.

[0115] See Figure 11 , Figure 18 and Figure 19 As shown, there are three auxiliary leads, which are named normally open terminal 101, normally closed terminal 102 and common terminal 103, respectively. There are also three second conductive pieces, which are named normally open conductive piece 201, normally closed conductive piece 202 and common conductive piece 203, respectively. The normally open terminal 101, normally closed terminal 102 and common terminal 103 are respectively inserted into the clamping parts of the normally open conductive piece 201, normally closed conductive piece 202 and common conductive piece 203.

[0116] In this embodiment, the normally open conductive sheet 201, the normally closed conductive sheet 202 and the common conductive sheet 203 are all provided with limiting holes 2044, and the corresponding positions of the frame 10 are provided with limiting protrusions 16.

[0117] See Figure 13 and Figure 21 As shown, the auxiliary spring includes a normally open auxiliary stationary spring 401, a normally closed auxiliary stationary spring 402, and an auxiliary moving spring 403; there are three auxiliary lead-out pins, which are named the first auxiliary lead-out pin 301, the second auxiliary lead-out pin 302, and the third auxiliary lead-out pin 303, respectively. One end of the first auxiliary lead-out pin 301 is connected to the normally open auxiliary stationary spring 401, and the other end is connected to the normally open conductive sheet 201; one end of the second auxiliary lead-out pin 302 is connected to the normally closed auxiliary stationary spring 402, and the other end is connected to the normally closed conductive sheet 202; one end of the third auxiliary lead-out pin 303 is connected to the auxiliary moving spring 403, and the other end is connected to the common conductive sheet 203.

[0118] In this embodiment, see Figure 19As shown, the other end of the third auxiliary lead-out pin 303 is connected to the common conductive sheet 203 via a wire (shown as dashed lines). For example, the circumferential sidewall of the frame 10 is provided with a wire groove 18, and the end face of the frame 10 away from the yoke plate 50 is provided with two wire holes. One wire hole is located below the common conductive sheet 203, and the other wire hole is located near the other end of the wire groove 18. One end of the wire is soldered to the common conductive sheet 203, and the other end enters the wire groove 18 from the wire hole below the common conductive sheet 203, then exits through the other wire hole to the top of the frame 10, and connects to the third auxiliary lead-out pin 303.

[0119] For example, see Figure 3 As shown, the space between the first limiting edge 12 and the end face of the frame 10 away from the yoke plate 50 forms a through groove 18, which makes the overall structure of the frame 10 more compact and the functions more fully integrated.

[0120] See Figure 10 and Figure 13 As shown, the frame 10 is provided with a clamping structure, and the clamping structure is provided with a slot 17; the relay also includes a circuit board 90, which is clamped and fixed in the slot 17.

[0121] For example, the clamping structure is disposed on one side of the frame 10 along its length. The clamping structure is located on the lower surface of the end of the frame 10 away from the yoke plate 50. The slot of the slot 17 faces the direction of the yoke plate 50. A coil frame 76 is disposed below the yoke plate 50. A circuit board 90 is mounted on top of the coil frame 76. The coil frame 76 is provided with a support portion. The circuit board 90 is located on the support portion. The upper edge of the circuit board 90 is clamped and fixed to the slot 17.

[0122] Finally, it should be noted that the various embodiments / implementations provided by this utility model can be combined with each other without creating contradictions, and will not be described in detail here.

[0123] In the embodiments of the utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the utility model according to the specific circumstances.

[0124] In the description of the utility model embodiments, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model embodiments and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model embodiments.

[0125] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0126] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the protection scope of the utility model.

Claims

1. A relay characterized by comprising: The device includes an insulating cover and an arc-extinguishing mechanism. The arc-extinguishing mechanism includes a frame and a magnet. The frame is made of plastic and has a hollow structure with openings at both ends. The inner wall of the frame is provided with a mounting groove, and the magnet is fixedly installed in the mounting groove. The insulating cover is installed in the inner cavity of the frame, and the surface of the magnet facing away from the bottom of the mounting groove contacts the outer surface of the insulating cover.

2. The relay according to claim 1, characterized in that The arc-extinguishing mechanism also includes a yoke clamp, which is arranged around the outer periphery of the frame; The bottom of the mounting groove is provided with a hollowed-out portion, and the part of the yoke clamp corresponding to the hollowed-out portion can contact the magnet.

3. The relay according to claim 2, characterized in that At least one wall of the mounting groove is provided with a first rib so that the magnet is interference-fitted with the mounting groove.

4. The relay according to claim 3, characterized in that The first rib extends along the depth direction of the mounting groove, and the end of the first rib near the opening of the mounting groove has a guide slope.

5. The relay of claim 2, wherein The outer surface of the yoke clamp is provided with a second rib, which is used to make the yoke clamp and the housing interference fit.

6. The relay of claim 2, wherein The circumferential surface of the frame is provided with a first limiting edge and a second limiting edge, and the yoke clamp is located between the first limiting edge and the second limiting edge.

7. The relay according to any one of claims 2 to 6, characterized in that The magnet includes a first magnet and a second magnet, and the mounting groove includes a first mounting groove and a second mounting groove; the frame has a first sidewall and a second sidewall disposed opposite to each other, the first mounting groove is disposed on the inner surface of the first sidewall, and the second mounting groove is disposed on the inner surface of the second sidewall; the first magnet is fixedly mounted in the first mounting groove, and the second magnet is fixedly mounted in the second mounting groove; The bottom of the first mounting groove is provided with a first hollow part, and the bottom of the second mounting groove is provided with a second hollow part. The part of the yoke clamp corresponding to the first hollow part can contact the first magnet, and the part of the yoke clamp corresponding to the second hollow part can contact the second magnet.

8. The relay according to claim 1, characterized in that, The insulating cover has a first end and a second end arranged opposite to each other along the axial direction, and a stationary contact is installed on the first end; The relay also includes a yoke plate and a frame plate, wherein the yoke plate is sealed to the second end of the insulating cover via the frame plate; The frame is provided with a positioning part, and the yoke plate is provided with a positioning mating part. The positioning mating part cooperates with the positioning part to restrict the frame from rotating relative to the yoke plate.

9. The relay of claim 8, wherein One of the positioning part and the positioning mating part is a positioning protrusion, and the other is a positioning hole.

10. The relay of claim 8, wherein It also includes a first housing and a second housing, with the arc-extinguishing mechanism and the insulating cover both installed inside the first housing; the second housing is connected to the first housing, the second housing is provided with a limiting part, the frame is provided with a limiting mating part, and the limiting mating part cooperates with the limiting part to press and fix the frame inside the first housing.

11. The relay according to claim 10, characterized in that, The second housing includes a top plate with a through hole for the stationary contact to pass through. The limiting part is located on the side of the top plate near the insulating cover, and the limiting mating part is located on the circumferential edge of the frame away from the yoke plate.

12. The relay according to claim 11, characterized in that, The limiting part includes a guide part and a limiting boss, and the limiting boss is fixedly connected to the guide part near the top plate; The limiting mating part is a limiting notch, the guide part is inserted into the limiting notch, and the limiting boss abuts against the surface of the frame away from the yoke plate.

13. The relay according to claim 11, characterized in that, The top plate is provided with insertion holes; The relay also includes a conductive sheet and a plug-in terminal. The conductive sheet is fixedly connected to the frame and has a clamping part. The plug-in terminal passes through the socket and is fixedly connected to the clamping part.

14. The relay according to claim 13, characterized in that, The conductive sheet is provided with a limiting hole, and the frame is provided with a limiting protrusion, which is limited to the limiting hole.

15. The relay according to claim 13, characterized in that, The insertion terminal includes a coil lead-out terminal; the conductive sheet includes a first conductive sheet, one end of which is connected to the coil lead-out terminal, and the other end of which is connected to the circuit board of the relay. The first conductive sheet has a snap-fit ​​groove, which is connected to the edge of the frame.

16. The relay according to claim 15, characterized in that, The relay also includes an auxiliary lead-out pin and an auxiliary spring, the auxiliary lead-out pin being inserted through the top of the insulating cover; the plug-in terminal also includes an auxiliary lead-out end, the conductive sheet also includes a second conductive sheet, one end of the second conductive sheet being connected to the auxiliary spring through the auxiliary lead-out pin, and the other end of the second conductive sheet being connected to the auxiliary lead-out end.

17. The relay according to any one of claims 1 to 6, 8 to 16, characterized in that, The frame is provided with a clamping structure, and the clamping structure is provided with a slot; The relay also includes a circuit board, which is clamped and fixed in the slot.

18. The relay according to any one of claims 1 to 6, 8 to 16, characterized in that The insulating cover is made of ceramic.

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