Relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to a relay, which comprises a contact structure, an insulating cover and a frame structure, the contact structure comprises a plurality of static contacts and a movable contact piece, one end of each static contact and the movable contact piece are accommodated in the insulating cover, and two ends of the movable contact piece can be contacted with or disconnected from the static contacts; a filling layer is arranged between the frame structure and the insulating cover, and the frame structure is in indirect contact with the circumferential side wall of the insulating cover through the filling layer. A filling layer is arranged between a frame structure and an insulating cover, the space formed between the frame structure and the circumferential side wall of the insulating cover is filled with the filling layer, the frame structure makes contact with the circumferential side wall of the insulating cover through the filling layer, and the filling layer is used for absorbing the dimensional tolerance of the insulating cover and the frame structure. The gap between the insulation cover and the frame structure is filled, the filling layer and the frame structure jointly form a protection structure with higher strength, it is guaranteed that the protection structure is completely attached to the circumferential side wall of the insulation cover, and the safety performance 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 with a control circuit (also known as an input circuit) and a controlled system (also known as an output circuit). It is commonly used in automatic control circuits. A relay is essentially an "automatic switch" that uses a smaller current to control a larger one. Therefore, it plays a role in automatic regulation, safety protection, and circuit switching.

[0003] In related technologies, the contact system of high-voltage DC relays requires an insulating cover. To ensure the reliability of the contact resistance, a large number of products use a ceramic insulating cover for the contact system. This cover is also filled with a certain pressure of hydrogen or nitrogen to assist in arc extinguishing. However, when the contact system arcs violently during a short circuit, the gas pressure rises rapidly. If the structural strength of the insulating cover is insufficient, the safety performance of the relay will be affected. Utility Model Content

[0004] The embodiment of the utility model provides a relay to improve the safety performance of the relay.

[0005] The relay provided by the embodiment of the present utility model includes a contact structure, an insulating cover and a frame structure. The contact structure includes multiple static contacts and movable contact pieces. One end of the multiple static contacts and the movable contact piece are both accommodated in the insulating cover, and the two ends of the movable contact piece can contact or disconnect with the static contacts; a filling layer is provided between the frame structure and the insulating cover, and the frame structure is indirectly in contact with the circumferential side wall of the insulating cover through the filling layer.

[0006] According to some embodiments of the present invention, a filling space is formed between the frame structure and the circumferential side wall of the insulating cover, and the filling layer is located in the filling space;

[0007] The relay further includes a leak-proof structure, which is used to seal the bottom of the filling space.

[0008] According to some embodiments of the present invention, the leakage-proof structure includes a sleeve with openings at both ends, the sleeve is sleeved on the outside of the insulating cover, one end of the sleeve is connected to the yoke iron plate of the relay, and the other end of the sleeve is provided with a sealing groove, the frame structure is provided in the sealing groove, and the bottom of the sealing groove is used to seal the bottom of the filling space.

[0009] According to some embodiments of the present invention, the leakage-proof structure includes a sealing ring, which is sleeved on the outside of the insulating cover, and the frame structure is arranged on the sealing ring.

[0010] According to some embodiments of the present invention, the leakage-proof structure is an inner flange provided at one end of the frame structure.

[0011] According to some embodiments of the present invention, the insulating cover is provided with an outer flange, the frame structure is provided on the outer flange, and the surface of the outer flange facing the top of the insulating cover forms the leak-proof structure.

[0012] According to some embodiments of the present invention, the filling layer is a colloid; or, the filling layer includes a reinforcing structure and a colloid, and the reinforcing structure is arranged between the circumferential side wall of the insulating cover and the frame structure.

[0013] According to some embodiments of the present invention, the frame structure is an integrally formed structure.

[0014] According to some embodiments of the present invention, the frame structure includes a first sub-section and a second sub-section, and the first sub-section is fixedly connected to the second sub-section to form the frame structure.

[0015] According to some embodiments of the present invention, the frame structure includes a bendable plate-like structure, a limiting portion is provided at one end of the bendable plate-like structure, and a limiting matching portion is provided at the other end of the bendable plate-like structure, and the limiting matching portion cooperates with the limiting portion to form a frame structure.

[0016] According to some embodiments of the present invention, the relay further includes a permanent magnet, and the permanent magnet is located between the frame structure and the circumferential side wall of the insulating cover.

[0017] According to some embodiments of the present invention, the frame structure is provided with a positioning protrusion, and the positioning protrusion is used to position the permanent magnet.

[0018] According to some embodiments of the present invention, reinforcing ribs are provided at the bends of the frame structure.

[0019] According to some embodiments of the present invention, the relay further includes a housing, and the housing is located outside the frame structure.

[0020] According to some embodiments of the present invention, the insulating cover is made of ceramic; the relay further includes a yoke plate and a frame plate, the yoke plate is connected to the insulating cover through the frame plate; the frame structure is located on the yoke plate, or the frame structure is located on the frame plate.

[0021] According to some embodiments of the present invention, there are multiple frame structures, and the multiple frame structures are arranged in sequence along the inner cavity of the insulating cover toward the outside.

[0022] According to some embodiments of the present invention, the frame structure is located outside the insulating cover.

[0023] According to some embodiments of the present invention, the frame structure includes a rigid frame structure, and the rigid frame structure forms a part of the housing of the relay.

[0024] According to some embodiments of the present invention, at least a portion of the frame structure can undergo elastic deformation to contact a portion of the outer surface of the circumferential side wall of the insulating cover and apply pre-pressure to the insulating cover toward the inner cavity of the insulating cover.

[0025] According to some embodiments of the present invention, the frame structure includes a rigid frame structure, the material of the rigid frame structure is an insulating material, and the rigid frame structure is located inside the insulating cover.

[0026] After long-term observation, testing, and research, the inventors discovered that the main reason for the insufficient structural strength of the insulation cover in existing relays is that, within the limited product space and given the specific factors such as the insulation cover's size, material, and molding process, the strength of the insulation cover, particularly for ceramic materials, can only be increased to a certain extent. As users' short-circuit current requirements continue to increase, the insulation cover's cavity cannot meet these requirements.

[0027] Based on this, one embodiment of the above utility model has at least the following advantages or beneficial effects:

[0028] (1) In the relay provided by the embodiment of the present invention, one end of a plurality of static contacts and a moving contact piece are all accommodated in an insulating cover. A filling layer is provided between the frame structure and the insulating cover, and the filling layer fills the space formed between the frame structure and the circumferential side wall of the insulating cover. The frame structure is indirectly in contact with the circumferential side wall of the insulating cover through the filling layer. The filling layer is used to absorb the dimensional tolerance of the insulating cover and the frame structure and fill the gap between the insulating cover and the frame structure. The filling layer and the frame structure together form a protective structure with higher strength and ensure that the protective structure can completely fit the circumferential side wall of the insulating cover, effectively protecting the insulating cover, thereby improving safety performance.

[0029] (2) The relay provided in the embodiment of the present invention further includes a leak-proof structure for sealing the bottom of the filling space. During the colloid filling process, the colloid is prevented from flowing to the outside and is instead gathered in the filling space, so as to better absorb the tolerance and fill the gap after solidification.

[0030] (3) In the relay provided by the embodiment of the present invention, at least a portion of the frame structure is elastically deformable to apply pre-pressure toward the inner cavity of the insulating cover to the insulating cover. During the assembly process of the relay, at least a portion of the elastic frame structure is elastically deformed and contacts a portion of the circumferential side wall of the insulating cover, thereby applying pre-pressure toward the inner cavity of the insulating cover to the insulating cover. The pre-pressure can offset a portion of the outward impact force, which is beneficial to improving safety performance and at the same time limiting the insulating cover from stretching outward. In this case, a stronger protective structure is formed by the filling layer and the elastic frame structure, and the pre-pressure still exists. When the contact system arcs violently at the moment of short circuit, the temperature rises instantly, and the air pressure in the ceramic cavity rises sharply instantly. When the huge pressure borne by the insulating cover is transmitted to the elastic frame structure, the elastic frame structure can provide pressure from all sides of the insulating cover to the inner cavity of the insulating cover, effectively protecting the insulating cover and further improving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Shown is an exploded view of a relay provided by an embodiment of the present utility model (the filling layer is not shown);

[0032] Figure 2 Shown is a schematic structural diagram of a relay provided by an embodiment of the present utility model;

[0033] Figure 3 The figure shows the structure of the rigid frame structure in the embodiment of the present utility model. Figure 1 (Permanent magnet shown);

[0034] Figure 4 The figure shows the structure of the rigid frame structure of the relay provided by the embodiment of the utility model. Figure 2 ;

[0035] Figure 5 The figure shows the structure of the rigid frame structure of the relay provided by the embodiment of the utility model. Figure 3 ;

[0036] Figure 6 The figure shows the structure of the rigid frame structure of the relay provided by the embodiment of the utility model. Figure 4 ;

[0037] Figure 7 Shown is a second structural schematic diagram of a relay provided by an embodiment of the present utility model;

[0038] Figure 8 Shown is Figure 7 Exploded view of the relay shown;

[0039] Figure 9 Shown is Figure 7A top view of the relay shown;

[0040] Figure 10 Shown is Figure 9 A cross-sectional view along line BB (the filling layer is not shown);

[0041] Figure 11 Shown is Figure 9 A cross-sectional view along line BB;

[0042] Figure 12 FIG. 1 shows a third structural diagram of a relay provided by an embodiment of the present utility model;

[0043] Figure 13 FIG. 4 is a schematic diagram showing a fourth structure of a relay provided by an embodiment of the present utility model;

[0044] Figure 14 FIG. 5 shows a fifth structural diagram (inverted state) of the relay provided by an embodiment of the present invention;

[0045] Figure 15 FIG. 6 shows a sixth structural diagram of a relay provided by an embodiment of the present utility model;

[0046] Figure 16 FIG. 7 shows a seventh structural diagram of a relay provided by an embodiment of the present utility model;

[0047] Figure 17 FIG. 8 is a schematic diagram of an eighth structure of a relay provided by an embodiment of the present utility model;

[0048] Figure 18 FIG. 1 shows a ninth structural diagram of a relay provided by an embodiment of the present utility model;

[0049] Figure 19 FIG. 1 shows a ninth structural diagram of a relay provided by an embodiment of the present utility model (showing a filling layer);

[0050] Figure 20 FIG. 10 is a schematic diagram of the structure of a relay provided by an embodiment of the present utility model;

[0051] Figure 21 Shown is Figure 20 The internal structure diagram of the relay shown;

[0052] Figure 22 Shown is Figure 20 Exploded view of the relay shown;

[0053] Figure 23 The figure shows a schematic structural diagram of the elastic frame structure in the relay provided by the embodiment of the present utility model;

[0054] Figure 24 Shown is a top view of the elastic frame structure and the insulating cover in the embodiment of the present utility model;

[0055] Figure 25 Shown is another structural schematic diagram of the elastic frame structure in the relay provided by an embodiment of the present utility model;

[0056] Figure 26 FIG2 shows another structural schematic diagram of the elastic frame structure in the relay provided by an embodiment of the present utility model (showing the permanent magnet);

[0057] Figure 27 Shown is an eleventh structural schematic diagram of a relay provided in an embodiment of the present utility model.

[0058] The following are the descriptions of the reference numerals:

[0059] 10-insulating cover; 11-first side wall; 12-second side wall; 13-top plate; 14-outer flange; 20-static contact; 31, 31'-first sub-shell; 32, 32'-second sub-shell; 40-yoke iron plate; 50-frame; 60-coil frame; 70-moving contact; 100-elastic frame structure; 101-first side portion; 102-second side portion; 103-sub-frame; 104-third side portion; 105-reinforcement rib; 200-rigid frame structure; 201-first A sub-rigid portion; 2011-first plate portion; 2012-second plate portion; 2013-third plate portion; 2014-fourth plate portion; 2015-fifth plate portion; 202-second sub-rigid portion; 203-dovetail groove; 204-trapezoidal protrusion; 205'-glue layer; 2051-glue; 2052-reinforcement structure; 206-sleeve; 2061-sealing groove; 207-sealing ring; 208-inner flange; 209-flaring; 210-permanent magnet; 211-positioning protrusion. DETAILED DESCRIPTION

[0060] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example 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 this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0061] See also Figures 1 to 27As shown, this embodiment provides a relay, including an insulating cover 10 and a frame structure, the contact structure including a plurality of static contacts 20 and a moving contact piece 70, one end of the plurality of static contacts 20 and the moving contact piece 70 are both accommodated in the insulating cover 10, and both ends of the moving contact piece 70 can contact or disconnect with the static contact 20; a filling layer is provided between the frame structure and the insulating cover 10, and the frame structure is indirectly in contact with the circumferential side wall of the insulating cover through the filling layer.

[0062] In the relay provided by this embodiment, one end of multiple static contacts and the moving contact piece are all accommodated in the insulating cover. By arranging a filling layer between the frame structure and the insulating cover, the filling layer fills the space formed between the frame structure and the circumferential side wall of the insulating cover. The frame structure is indirectly in contact with the circumferential side wall of the insulating cover through the filling layer. The filling layer is used to absorb the dimensional tolerance of the insulating cover and the frame structure and fill the gap between the insulating cover and the frame structure. The filling layer and the frame structure together form a protective structure with higher strength and ensure that the protective structure can completely fit the circumferential side wall of the insulating cover, effectively protecting the insulating cover, thereby further improving the safety performance.

[0063] For example, the material of the insulating cover 10 in this embodiment is ceramic. The cross-section of the insulating cover 10 is generally rectangular, for example, the cross-section of the insulating cover 10 can be a rounded rectangle, and the insulating cover 10 has a length direction (in Figure 2 Indicated by the arrow direction D1 in the figure), width direction (indicated by Figure 2 The arrow direction D2 in the figure) and the height direction (indicated by Figure 2 The insulating cover 10 includes a top plate 13 and a circumferential side wall arranged around the edge of the top plate 13. The circumferential side wall includes two first side walls 11 and two second side walls 12. The two first side walls 11 are arranged opposite to each other along the width direction of the insulating cover 10, and the two second side walls 12 are arranged opposite to each other along the length direction of the insulating cover 10.

[0064] Exemplarily, there are two static contacts 20. The top plate 13 of the insulating cover 10 is provided with two mounting holes, spaced apart along the length of the insulating cover 10. Each mounting hole is provided with a static contact 20, one of which serves as a terminal for current inflow, and the other as a terminal for current outflow. One end of the movable contact 70 contacts or disconnects with one of the static contacts 20, while the other end of the movable contact 70 contacts or disconnects with the other static contact 20. Of course, the number of static contacts can also be greater than two, with some of the static contacts contacting or disconnecting with one end of the movable contact, while the other portion of the static contacts contacts or disconnects with the other end of the movable contact.

[0065] It should be understood that in Figure 1 From the perspective of FIG, the top plate of the insulating cover 10 is located above the circumferential side wall. From other perspectives, the top plate may also be located below or on one side of the circumferential side wall.

[0066] In this embodiment, the height of the frame structure is not greater than the height of the insulating cover 10 , thereby not increasing the height dimension of the relay.

[0067] In some embodiments, see Figure 2 As shown, the frame structure extends from one end of the insulating cover 10 to the other end along the height direction of the insulating cover 10. This can increase the contact area between the frame structure and the circumferential side wall of the insulating cover 10, thereby more effectively protecting the insulating cover 10 and further improving safety performance.

[0068] In one embodiment, see Figure 1 and Figure 17 As shown, the relay further includes a yoke plate 40 and a frame plate 50 . The yoke plate 40 is connected to an end of the insulating cover 10 away from the top plate 13 via the frame plate 50 .

[0069] In some embodiments, see Figure 17 As shown, the frame structure is located on the yoke plate 40.

[0070] In other embodiments, see Figure 18 As shown, the frame structure may also be located on the frame piece 50 .

[0071] See also Figure 1 As shown, the relay further includes a coil frame 60 , which is located on a side of the yoke plate 40 away from the frame structure, and a coil is wound on the coil frame.

[0072] Exemplarily, the yoke plate 40 is connected to the end of the insulating cover 10 away from the top plate 13 through a frame plate 50 to enclose a first inner cavity; a metal shell is connected to the side of the yoke plate 40 away from the insulating cover 10 to form a second inner cavity; the yoke plate 40 is provided with a through hole for connecting the first inner cavity and the second inner cavity; the relay also includes a static iron core, a moving iron core and a push rod, and the static iron core is fixedly arranged in the second inner cavity; the moving iron core is located in the second inner cavity, the moving contact piece is located in the first inner cavity, and the push rod is passed through the through hole, one end of the push rod is connected to the moving iron core, and the other end of the push rod is connected to the moving contact piece; the moving iron core can be attracted or separated from the static iron core, so that the moving contact on the moving contact piece contacts or disconnects with the static contact on the static contact head.

[0073] For example, in the de-energized state, the moving iron core and the static iron core are separated, and the moving contact on the moving contact piece is disconnected from the static contact on the static contact head; when the coil is energized, the moving iron core and the static iron core are attracted, and the moving contact on the moving contact piece is in contact with the static contact on the static contact head.

[0074] In one embodiment, the number of the frame structure can be one or more, and the multiple frame structures are nested in sequence, that is, multiple frame structures are arranged along the inner cavity of the insulating cover 10 toward the outside.

[0075] In a possible design, the frame structure may be a rigid frame structure 200 . The rigid frame structure 200 is located outside the insulating cover 10 .

[0076] In some embodiments, see Figure 11 As shown, the filling layer is colloid 2051. The colloid 2051 is filled in the space formed between the rigid frame structure 200 and the circumferential side wall of the insulating cover 10. When the colloid 2051 is cured, it can form an integrated structure with the rigid frame structure 200, further enhancing safety performance.

[0077] In other embodiments, see Figures 20 to 22 As shown, the filling layer includes a reinforcing structure 2052 and a colloid 2051 . The reinforcing structure 2052 is arranged between the circumferential side wall of the insulating cover 10 and the frame structure. The colloid 2051 is filled in the filling space formed between the circumferential side wall of the insulating cover 10 and the frame structure.

[0078] For example, see Figure 22 As shown, the reinforcing structure 2052 can be a steel bar, which is coiled around the outside of the insulating cover 10. The rigid frame structure 200 is located outside the steel bar, and the colloid 2051 is filled in the filling space formed between the circumferential side wall of the insulating cover 10 and the frame structure. After the colloid 2051 is cured, it can form an integrated structure with the steel bar and the rigid frame structure 200, thereby further enhancing the safety performance.

[0079] It should be noted that the reinforcement structure 2052 is not limited to steel bars, as long as it has a certain rigidity and can play a protective role. The colloid 2051 can be epoxy resin glue, or other curing agents that can flow and solidify.

[0080] In one embodiment, a filling space is formed between the frame structure and the circumferential sidewalls of the insulating cover, and the filling layer is located within the filling space. The relay also includes a leak-proof structure for sealing the bottom of the filling space. During the colloid filling process, the colloid is prevented from flowing outward and instead accumulates within the filling space, thereby better absorbing tolerances and filling gaps after curing.

[0081] In one embodiment, see Figures 7 to 11 As shown, the leakage-proof structure includes a sleeve 206 with openings at both ends. The sleeve 206 is sleeved on the outside of the insulating cover. One end of the sleeve is connected to the yoke iron plate 40 of the relay. The other end of the sleeve is provided with a sealing groove 2061. The frame structure is provided in the sealing groove 2061. The bottom of the sealing groove is used to seal the bottom of the filling space.

[0082] In some embodiments, a flared opening 209 is provided at one end of the rigid frame structure 200 away from the sleeve 206 , so as to facilitate glue pouring into the filling space through the flared opening 209 .

[0083] In this embodiment, Figure 10 The moving contact piece 70 is shown as an example. Figure 10 The moving contact and the static contact are in the disconnected state.

[0084] In one embodiment, see Figure 12 As shown, the leakage-proof structure includes a sealing ring 207 , which is sleeved on the outside of the insulating cover 10 , and the frame structure is arranged on the sealing ring 207 .

[0085] In one embodiment, the leak-proof structure is an inner flange 208 provided at one end of the frame structure.

[0086] In some embodiments, see Figure 13 As shown, the inner flange 208 is provided at one end of the frame structure away from the top plate 13 of the insulating cover 10 .

[0087] In other embodiments, see Figure 14 As shown, the inner flange 208 can also be provided at one end of the frame structure close to the top plate 13 of the insulating cover 10. In this case, when pouring glue, the relay can be turned upside down, and the inner flange 208 can block the bottom of the filling space.

[0088] In one embodiment, see Figure 15 As shown, the insulation cover 10 is provided with an outer flange 14 , the frame structure is provided on the outer flange 14 , and the outer flange 14 forms a leak-proof structure on the surface of the top plate of the insulation cover.

[0089] In one embodiment, see Figure 16 As shown, when the insulation cover 10 is provided with an outer flange 14, an inner flange 208 may also be provided at the end of the frame structure away from the insulation cover top plate. This can increase the contact area between the inner flange 208 and the outer flange 14, prevent the frame structure from shifting and causing skew during the glue pouring process, and further prevent glue leakage.

[0090] See also Figure 17 As shown, when the frame structure contacts the yoke plate 40 , the surface of the yoke plate 40 facing the insulation cover 10 can block the bottom of the filling space.

[0091] See also Figure 18 As shown, when the frame structure contacts the frame piece 50, the surface of the frame piece 50 facing the insulation cover 10 can block the bottom of the filling space. Figure 19 As shown, the filling space is filled with colloid.

[0092] In some embodiments, see Figure 1 As shown, the frame structure is an integrally formed rigid frame structure 200, which has a circumferentially closed protective space within which the insulating cover 10 is located. This integral rigid frame structure 200 provides enhanced structural strength. When the significant pressure exerted on the insulating cover 10 is transmitted to the rigid frame structure, the integral rigid frame structure 200 applies a more uniform and stable pressure to the inner cavity of the insulating cover 10 from all sides, effectively protecting the insulating cover 10 and improving safety.

[0093] In other embodiments, see Figure 4 and Figure 5 As shown, the rigid frame structure 200 includes a first sub-part and a second sub-part, wherein the first sub-part is named the first sub-rigid part 201 and the second sub-part is named the second sub-rigid part 202 , and the first sub-rigid part 201 is fixedly connected to the second sub-rigid part 202 to form the rigid frame structure 200 .

[0094] For example, see Figure 4 As shown, the first sub-rigid portion 201 includes a first plate portion 2011, a second plate portion 2012, a third plate portion 2013, a fourth plate portion 2014 and a fifth plate portion 2015. The first plate portion 2011 and the second plate portion 2012 are relatively arranged at the two ends of the third plate portion 2013. The first plate portion 2011 and the second plate portion 2012 are both located on the same side of the third plate portion 2013. One end of the fourth plate portion 2014 is connected to the first plate portion 2011, and one end of the fifth plate portion 2015 is connected to the second plate portion 2012. There is a gap between the fourth plate portion 2014 and the fifth plate portion 2015. The second sub-rigid portion 202 is plate-shaped, one end of the second sub-rigid portion 202 is connected to the fourth plate portion 2014, and the other end of the second sub-rigid portion 202 is connected to the fifth plate portion 2015 to seal the gap.

[0095] For example, see Figure 4 As shown, the second sub-rigid portion 202 and the first sub-rigid portion 201 can be welded, see Figure 5 As shown, the second sub-rigid portion 202 and the first sub-rigid portion 201 may also be riveted.

[0096] In other embodiments, the frame structure includes a bendable plate-like structure, a limiting portion is provided at one end of the bendable plate-like structure, and a limiting matching portion is provided at the other end of the bendable plate-like structure, and the limiting matching portion cooperates with the limiting portion to form a frame structure.

[0097] For example, see Figure 6As shown, the limiting portion can be a dovetail groove 203, and the limiting matching portion can be a trapezoidal protrusion 204, which is adapted to the dovetail groove 203. During assembly, the trapezoidal protrusion 204 is limited in the dovetail groove 203 to achieve self-locking, thereby effectively preventing the rigid frame structure 200 from being stretched.

[0098] The material of the rigid frame structure 200 can be metal or non-metal, such as plastic.

[0099] For example, the material of the rigid frame structure 200 can be a magnetic conductive material, see Figure 3 and Figure 6 As shown, the relay further includes a permanent magnet 210 , which is located between the rigid frame structure 200 and the circumferential side wall of the insulating cover 10 .

[0100] Exemplarily, there are two permanent magnets 210 , which are arranged on both sides of the insulation cover 10 along the length direction of the insulation cover 10 to form an arc blowing magnetic field to achieve the arc extinguishing function.

[0101] certainly, Figure 4 and Figure 5 The rigid frame structure shown can also house permanent magnets.

[0102] In one embodiment, the rigid frame structure 200 is provided with a positioning protrusion 211, which is used to position the permanent magnet 210. The positioning protrusion 211 can be formed by stamping the rigid frame structure 200.

[0103] It should be understood that after the permanent magnet 210 is provided, the space between the rigid frame structure 200 and the circumferential side wall of the insulating cover 10 may be filled with the colloid 2051 .

[0104] See also Figure 3 As shown, a corner is formed between two adjacent side walls of the rigid frame structure, and a reinforcing rib 105 is provided at the corner to increase the strength of the rigid frame structure 200. Exemplarily, the reinforcing rib 105 is formed by inward stamping to increase the structural strength of the corner.

[0105] In other embodiments, the rigid frame structure may be located inside the insulating cover, and the filling layer may be located between the outer surface of the rigid frame structure and the inner surface of the insulating cover. In this case, the rigid frame structure is made of insulating material, such as plastic.

[0106] In another possible design, see Figures 23 to 26As shown, the frame structure can also be an elastic frame structure 100. When the frame structure is an elastic frame structure, at least a portion of the elastic frame structure can undergo elastic deformation to contact a portion of the outer surface of the circumferential side wall of the insulating cover and apply a pre-pressure toward the inner cavity of the insulating cover to the insulating cover. During the assembly process of the relay, at least a portion of the elastic frame structure undergoes elastic deformation and contacts a portion of the circumferential side wall of the insulating cover 10, thereby applying a pre-pressure toward the inner cavity of the insulating cover 10 to the insulating cover 10. This pre-pressure can offset a portion of the outward impact force, which is beneficial to improving safety performance while limiting the outward expansion of the insulating cover 10.

[0107] In this case, a stronger protective structure is formed by the filling layer and the elastic frame structure, and the pre-pressure still exists. When the contact system arcs violently at the moment of short circuit, the temperature rises instantly, and the air pressure in the inner cavity of the insulating cover rises sharply instantly. When the huge pressure borne by the insulating cover 10 is transmitted to the elastic frame structure, the elastic frame structure can provide pressure from all sides of the insulating cover 10 to the inner cavity of the insulating cover 10, effectively protecting the insulating cover 10 and improving safety performance.

[0108] The elastic frame structure 100 includes two opposite first side portions 101 . The two first side portions 101 are respectively located on two sides of the insulation cover 10 to apply pre-pressure toward the inner cavity of the insulation cover 10 .

[0109] For example, see Figure 24 As shown, the two first side portions 101 are respectively arranged outside the first side wall 11 to apply pre-pressure to the first side wall 11 toward the inner cavity of the insulation cover 10.

[0110] It should be noted that the elastic frame structure may also include two first side portions that are not arranged opposite to each other.

[0111] The elastic frame structure 100 further includes two opposite second side portions 102 . The two second side portions 102 are respectively disposed outside the second side wall 12 to apply pre-pressure to the second side wall 12 toward the inner cavity of the insulation cover 10 .

[0112] See also Figure 24 As shown, the middle position of the first side portion 101 undergoes elastic deformation toward the inner cavity of the insulating cover 10, so that the middle position of the first side portion 101 abuts against the first side wall 11 of the insulating cover 10, and a gap is set between the two ends of the first side portion 101 and the first side wall 11.

[0113] Accordingly, the middle position of the second side portion 102 undergoes elastic deformation in the direction close to the inner cavity of the insulating cover 10, so that the middle position of the second side portion 102 abuts against the second side wall 12 of the insulating cover 10, and along the length direction of the insulating cover 10, gaps are set between the two ends of the second side portion 102 and the second side wall 12. Figure 24 The direction of the arrow in the figure indicates the direction of the preload.

[0114] Exemplarily, the elastic frame structure 100 can be an integrally molded structure having a circumferentially closed protective space, in which the insulating cover 10 is located. When the huge pressure borne by the insulating cover 10 is transmitted to the elastic frame structure 100, the integral elastic frame structure 100 can apply a more uniform and stable pre-pressure to the inner cavity of the insulating cover 10 from all sides, thereby effectively protecting the insulating cover 10 and improving safety performance.

[0115] Of course, see Figure 23 As shown, the elastic frame structure 100 can also be formed by bending the ends of the first side portion 101 and the second side portion 102 to form folded edges, and the folded edges at both ends are hooked together. The folded edges can also be welded to further increase the structural strength.

[0116] In some embodiments, see Figure 25 As shown, the elastic frame structure 100 includes two opposite first side portions 101, which are respectively located on both sides of the insulating cover 10 to apply pre-pressure toward the inner cavity of the insulating cover 10 to the insulating cover 10; the elastic frame structure 100 also includes two opposite third side portions 104, which are connected between the two first side portions 101, and the two third side portions 104 are in contact with the second side wall 12 of the insulating cover 10.

[0117] The two first side portions 101 are respectively arranged on the outside of the first side wall 11 to apply pre-pressure to the first side wall 11 toward the inner cavity of the insulating cover 10; at the same time, the two third side portions 104 are both rigid portions, and the two third side portions 104 are respectively arranged on the outside of the second side wall 12 to enhance the safety performance of the second side wall 12, thereby enhancing the overall safety performance.

[0118] For example, the third side portion 104 is integrally formed with the first side portion 101. Figure 26 As shown, a corner is formed between the first side portion 101 and the third side portion 104, and a reinforcing rib 105 is provided at the corner to increase the strength of the elastic frame structure. Exemplarily, the reinforcing rib 105 is formed by inward stamping to increase the structural strength of the corner.

[0119] See also Figure 26As shown, a permanent magnet 210 is provided between the third side portion 104 and the second side wall 12 , and the third side portion is in contact with the second side wall through the permanent magnet.

[0120] In some embodiments, the elastic frame structure may also include a first sub-section and a second sub-section, and the first sub-section and the second sub-section are fixedly connected to form the elastic frame structure.

[0121] It should be understood that the structure and connection method of the first sub-part and the second sub-part in the elastic frame structure are basically the same as the structure and connection method of the first sub-rigid part and the second sub-rigid part in the rigid frame structure, and will not be repeated here.

[0122] In one embodiment, the relay further comprises a housing, and the insulating cover 10 and the frame structure are both installed inside the housing. In this case, the housing can play a further protective role.

[0123] For example, see Figure 1 As shown, the housing includes a first sub-shell 31 and a second sub-shell 32 , and the first sub-shell 31 and the second sub-shell 32 are fixedly connected to encapsulate the insulating cover 10 and the frame structure in the housing.

[0124] In other embodiments, when the frame structure includes a rigid frame structure, and the rigid frame structure is located outside the insulating cover 10, the rigid frame structure can form a part of the housing of the relay. Figure 27 As shown, the shell extends downward from one end of the rigid frame structure close to the bottom of the insulating cover to wrap the yoke iron plate, the frame sheet and the coil frame inside.

[0125] Exemplarily, the shell may include a first sub-shell 31' and a second sub-shell 32', the first sub-shell 31' and the second sub-shell 32' are fixedly connected, the first sub-shell 31' is provided with a through hole, the first sub-shell 31' covers the top plate of the insulating cover, and the static contact 20 passes through the through hole; the rigid frame structure 200 is part of the second sub-shell 32'.

[0126] For example, when the rigid frame structure 200 serves as part of a relay housing, the rigid frame structure can be made of plastic, and an adhesive layer 205' is provided on the inner surface of the rigid frame structure 200 to enhance the fixing effect. A portion of the adhesive layer can be the aforementioned filling layer, and of course, the aforementioned filling layer can also directly serve as the adhesive layer.

[0127] Finally, it should be noted that: it is understandable that the various embodiments / implementations provided by the present invention can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0128] 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 expressly defined. Terms such as "installed", "connected", "connected", "fixed", and "contacted" 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; "contacted" can be a direct contact or an indirect contact. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0129] In the description of the utility model embodiments, it should be understood that the terms "up", "down", "left", "right", "front", "back", etc., indicating directions or positional relationships, 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 direction. Therefore, it cannot be understood as a limitation on the utility model embodiments.

[0130] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the utility model. In this specification, schematic representations 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 any one or more embodiments or examples.

[0131] The above are merely preferred embodiments of the utility model and are not intended to limit the utility model. Those skilled in the art will readily appreciate that various modifications and variations of the utility model embodiments are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the utility model embodiments shall be included within the scope of protection of the utility model embodiments.

Claims

1. A relay, characterized in that: It includes a contact structure, an insulating cover and a frame structure. The contact structure includes multiple static contacts and moving contact pieces. One end of the multiple static contacts and the moving contact piece are both accommodated in the insulating cover, and the two ends of the moving contact piece can contact or disconnect with the static contacts; a filling layer is provided between the frame structure and the insulating cover, and the frame structure is indirectly in contact with the circumferential side wall of the insulating cover through the filling layer.

2. The relay according to claim 1, wherein: A filling space is formed between the frame structure and the circumferential side wall of the insulating cover, and the filling layer is located in the filling space; The relay further includes a leak-proof structure, which is used to seal the bottom of the filling space.

3. The relay according to claim 2, characterized in that The leakage-proof structure includes a sleeve with openings at both ends, which is sleeved on the outside of the insulating cover. One end of the sleeve is connected to the yoke plate of the relay, and the other end of the sleeve is provided with a sealing groove. The frame structure is provided in the sealing groove, and the bottom of the sealing groove is used to seal the bottom of the filling space.

4. The relay according to claim 2, characterized in that The anti-leakage structure includes a sealing ring, which is sleeved on the outside of the insulating cover, and the frame structure is arranged on the sealing ring.

5. The relay according to claim 2, characterized in that The anti-leakage structure is an inner flange arranged at one end of the frame structure.

6. The relay according to claim 2, characterized in that The insulating cover is provided with an outer flange, the frame structure is provided on the outer flange, and the surface of the outer flange facing the top of the insulating cover forms the leak-proof structure.

7. The relay according to any one of claims 1 to 6, characterized in that: The filling layer is a colloid; or, the filling layer includes a reinforcing structure and a colloid, and the reinforcing structure is arranged between the circumferential side wall of the insulating cover and the frame structure.

8. The relay according to any one of claims 1 to 6, characterized in that: The frame structure is an integrally formed structure.

9. The relay according to any one of claims 1 to 6, characterized in that: The frame structure includes a first sub-section and a second sub-section, and the first sub-section and the second sub-section are fixedly connected to form the frame structure.

10. The relay according to any one of claims 1 to 6, characterized in that: The frame structure includes a bendable plate-shaped structure, one end of the bendable plate-shaped structure is provided with a limiting portion, the other end of the bendable plate-shaped structure is provided with a limiting matching portion, the limiting matching portion cooperates with the limiting portion to form a frame structure.

11. The relay according to any one of claims 1 to 6, characterized in that: It also includes a permanent magnet, which is located between the frame structure and the circumferential side wall of the insulating cover.

12. The relay according to claim 11, wherein: The frame structure is provided with a positioning protrusion, and the positioning protrusion is used to position the permanent magnet.

13. The relay according to any one of claims 1 to 6, characterized in that: Reinforcing ribs are provided at the bending positions of the frame structure.

14. The relay according to any one of claims 1 to 6, characterized in that: It also includes a shell, which is located outside the frame structure.

15. The relay according to any one of claims 1 to 6, characterized in that: The insulating cover is made of ceramic; the relay further comprises a yoke plate and a frame piece, the yoke plate is connected to the insulating cover via the frame piece; the frame structure is located on the yoke plate, or the frame structure is located on the frame piece.

16. The relay according to any one of claims 1 to 6, characterized in that: There are multiple frame structures, and the multiple frame structures are arranged in sequence along the direction from the inner cavity of the insulation cover to the outside.

17. The relay according to any one of claims 1 to 6, characterized in that: The frame structure is located outside the insulation cover.

18. The relay according to claim 17, wherein: The frame structure includes a rigid frame structure, which forms a part of the housing of the relay.

19. The relay according to claim 17, wherein: At least a portion of the frame structure is elastically deformable to contact a portion of the outer surface of the circumferential side wall of the insulation cover and apply a pre-pressure toward the inner cavity of the insulation cover to the insulation cover.

20. The relay according to any one of claims 1 to 6, characterized in that The frame structure includes a rigid frame structure. The material of the rigid frame structure is insulating material. The rigid frame structure is located inside the insulating cover.

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