Relay

Abstract

The present disclosure relates to the technical field of electronic control devices, in particular to a relay. The relay comprises: a housing, the housing being provided with exposing holes; stationary contacts, the stationary contacts being fixed relative to the housing, and one side of each stationary contact being exposed out of the housing via an exposing hole; and signal leading-out pieces, the signal leading-out pieces being fixed to the outer side of the housing and being each connected to a stationary contact. In the circumferential direction of each stationary contact, a signal leading-out piece surrounds part of the stationary contact. During connection of a signal leading-out piece and a stationary contact, since the part of the signal leading-out piece surrounding the stationary contact is of a non-continuous structure, the shape of the signal leading-out piece can be corrected according to needs while end riveting or welding is satisfied, so as to prevent warping of the signal leading-out piece, such that the signal leading-out piece is effectively connected to and in reliable contact with the stationary contact, thus improving the connection strength and connection effect of the stationary contact and the signal leading-out piece. Thus, the signal leading-out pieces and the stationary contacts in the relay can be effectively connected, and the reliability of the connection of the signal leading-out pieces and the stationary contacts is improved.

Description

Relay

[0001] The present disclosure claims priority to Chinese Patent Application No. 202410532899.5, filed on April 29, 2024, the entire contents of which are incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of electronic control devices, and in particular, to a relay. BACKGROUND

[0003] 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 usually applied in an automatic control circuit. The relay is actually a kind of "automatic switch" that uses a smaller current to control a larger current. Therefore, it plays a role in automatic regulation, safety protection, and switching of circuits.

[0004] In the existing DC relay, when assembling the shell, the static contact, and the signal lead-out sheet, there may be a height difference between the signal lead-out sheet and the assembly surface of the static contact in the height direction, which may cause a virtual welding problem during welding, affecting the reliability of the connection between the two, or causing a problem that the signal lead-out sheet and the static contact are not easy to fit. SUMMARY

[0005] The present disclosure provides a relay, in which the signal lead-out sheet and the static contact can be effectively connected, and the reliability of the connection between the signal lead-out sheet and the static contact is improved.

[0006] The present disclosure provides a relay, comprising:

[0007] A shell, the shell being provided with an exposure hole;

[0008] A static contact, the static contact being fixed relative to the shell, and a side of the static contact being exposed from the shell through the exposure hole;

[0009] A signal lead-out sheet, the signal lead-out sheet being fixed to the outside of the shell and connected to the static contact; along the circumferential direction of the static contact, the signal lead-out sheet surrounds part of the static contact.

[0010] According to some embodiments of the present disclosure, the signal lead-out sheet comprises a first extension section, the first extension section surrounding the static contact and being connected to the static contact; a side edge line of the first extension section close to the static contact is an arc-shaped edge line.

[0011] According to some embodiments of the present disclosure, the relay further comprises a glue layer, the static contact and the first extension section being welded, and a side of the first extension section away from the shell being blocked by the glue layer.

[0012] According to some embodiments of the present disclosure, the inner wall of the exposed hole is provided with a first protruding rib; the first protruding rib surrounds part of the static contact along the circumference of the static contact, and both ends of the first protruding rib form a gap; and the first extension section is arranged in the gap.

[0013] According to some embodiments of the present disclosure, the first protruding rib and the first extension section surround the static contact along the circumference of the static contact.

[0014] According to some embodiments of the present disclosure, the inner wall of the exposed hole located in the gap is provided with a second protruding rib, the protruding size of the second protruding rib is smaller than that of the first protruding rib, and the second protruding rib abuts against the side surface of the first extension section away from the static contact.

[0015] According to some embodiments of the present disclosure, the top surface of the signal lead-out piece does not exceed the top surface of the second protruding rib along the direction of the shell away from the static contact.

[0016] According to some embodiments of the present disclosure, the first extension section is an arc-shaped extension section.

[0017] According to some embodiments of the present disclosure, the length of the arc-shaped edge line is greater than or equal to one third of a circle concentric with the arc-shaped edge line and having the same radius, and the length of the arc-shaped edge line is less than one half of the circle concentric with the arc-shaped edge line and having the same radius.

[0018] According to some embodiments of the present disclosure, the signal lead-out piece further comprises a second extension section and a third extension section, the second extension section connects the first extension section and the third extension section; and the third extension section extends away from the direction of the shell to form a signal lead-out pin.

[0019] According to some embodiments of the present disclosure, the first extension section comprises a first extension subsection and a second extension subsection, the second extension subsection is separated from the first extension subsection from the connection position of the second extension section and the first extension section, and the length of the second extension subsection is the same as that of the first extension subsection.

[0020] According to some embodiments of the present disclosure, the extension direction of the second extension section and the tangent extension direction of the first extension section at the connection position form an included angle, the included angle is greater than 0 degrees and less than or equal to 90 degrees.

[0021] According to some embodiments of the present disclosure, the top surface of the shell is provided with a mounting groove, and at least part of the second extension section is arranged in the mounting groove.

[0022] According to some embodiments of the present disclosure, the signal lead-out piece further comprises a fourth extension section, the fourth extension section is bent relative to the second extension section and inserted into the shell.

[0023] According to some embodiments of the present disclosure, the shell is provided with a groove; the fourth extension section is interference-fitted with the groove.

[0024] According to some embodiments of the present disclosure, the surface of the fourth extension section is provided with a barb; the fourth extension section is interference-fitted with the groove through the barb.

[0025] According to some embodiments of the present disclosure, the signal lead-out sheet is of an integrally formed structure.

[0026] According to some embodiments of the present disclosure, the shell is provided with a retaining wall surrounding the exposure hole along the circumference of the static contact; the retaining wall is provided with a missing part, and the second extension section is connected to the first extension section located in the retaining wall from the missing part.

[0027] According to some embodiments of the present disclosure, the static contact is provided with a sunken surface, and the signal lead-out sheet is placed on the surface of the sunken surface and connected to the sunken surface.

[0028] One of the embodiments in the above disclosure has at least the following advantages or beneficial effects:

[0029] 1. In the relay provided by the present disclosure, the signal lead-out sheet only surrounds part of the static contact, and the signal lead-out sheet is not arranged in a full circle. When connecting the signal lead-out sheet and the static contact, since the signal lead-out sheet is discontinuous around part of the static contact, the shape of the signal lead-out sheet can be corrected as needed under the premise of satisfying the end riveting or welding, so as to avoid the signal lead-out sheet from being warped, so that the signal lead-out sheet and the static contact are effectively connected and reliably contacted, thereby improving the connection strength and connection effect of the static contact and the signal lead-out sheet. At the same time, since the signal lead-out sheet does not need to surround the static contact in a full circle, the size of the signal lead-out sheet can be reduced, thereby saving materials and reducing the preparation cost.

[0030] 2. In the relay provided by the present disclosure, the inner wall of the exposure hole is provided with a first protruding rib; along the circumference of the static contact, the first protruding rib surrounds part of the static contact, and the two ends of the first protruding rib form notches; and the first extension section is placed in the notches. The first protruding rib in cooperation with the first extension section in the signal lead-out sheet can further block the flow of the glue and reduce the risk of the glue infiltration, so as to guarantee the structural performance of the relay.

[0031] 3. In the relay provided by the present disclosure, the inner wall of the exposure hole located in the notches is provided with a second protruding rib, the protruding size of the second protruding rib is smaller than that of the first protruding rib, and the second protruding rib is in abutment with the surface of the side of the first extension section away from the static contact. The second protruding rib can reduce the gap between the first extension section and the shell, so as to further block the flow of the glue and reduce the risk of the glue infiltration, so as to guarantee the structural performance of the relay.

[0032] 4、The relay provided by the present disclosure, the side edge of the first extension section of the signal lead-out sheet near the stationary contact is an arc-shaped edge, so as to improve the matching degree of the first extension section and the stationary contact.

[0033] 5、The relay provided by the present disclosure, the shell is provided with a retaining wall surrounding the exposure hole along the circumferential direction of the stationary contact; the retaining wall is provided with a missing part, and the second extension section is connected to the first extension section located in the retaining wall from the missing part. On the one hand, the retaining wall can pre-position and limit the first extension section, and define the approximate position of the first extension section, so as to facilitate the subsequent precise positioning and connection operation of the first extension section and the stationary contact; on the other hand, the retaining wall and the stationary contact form a containing space, which can facilitate the injection of the glue layer in the subsequent process, and the glue has certain flow resistance, which can block the overflow of the glue, so as to improve the cleanliness of the relay. BRIEF DESCRIPTION OF DRAWINGS

[0034] Fig. 1 shows a perspective structural schematic view of the relay provided by the embodiment of the present disclosure;

[0035] Fig. 2 shows a perspective structural schematic view of the relay in Fig. 1 from another angle;

[0036] Fig. 3 shows a perspective structural schematic view of the relay in Fig. 1 from still another angle;

[0037] Fig. 4 shows a perspective structural schematic view of the signal lead-out sheet in Fig. 1;

[0038] Fig. 5 shows a planar schematic view of the signal lead-out sheet in Fig. 2;

[0039] Fig. 6 shows a perspective structural schematic view of part of the shell in Fig. 1;

[0040] Fig. 7 shows a perspective structural schematic view of the structure in Fig. 6 from another angle;

[0041] Fig. 8 shows a planar schematic view of the structure in Fig. 6;

[0042] Fig. 9 shows a planar schematic view of the relay in Fig. 1;

[0043] Fig. 10 shows a sectional schematic view of A-A in Fig. 9;

[0044] Fig. 11 shows an enlarged schematic view of M in Fig. 10;

[0045] Fig. 12 shows a sectional schematic view of B-B in Fig. 9.

[0046] The reference signs are explained as follows: 100, housing; 110, first shell; 111, exposure hole; 112, mounting groove; 113, groove; 114, first convex rib; 115, second convex rib; 116, retaining wall; 120, second shell; 200, static contact; 300, signal lead-out sheet; 310, first extension section; 311, first extension subsection; 312, second extension subsection; 320, second extension section; 330, third extension section; 340, fourth extension section; 341, barb; S, slope surface. DETAILED DESCRIPTION

[0047] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the implementations set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the figures, and thus a detailed description of the same will be omitted.

[0048] FIG. 1 shows a perspective structural schematic diagram of a relay provided by an embodiment of the present disclosure; FIG. 2 shows a perspective structural schematic diagram of the relay in FIG. 1 from another angle; and FIG. 3 shows a perspective structural schematic diagram of the relay in FIG. 1 from yet another angle. As shown in FIGS. 1-3, an embodiment of the present disclosure provides a relay, which includes a housing 100, a static contact 200, and a signal lead-out sheet 300. The housing 100 is provided with an exposure hole 111; the static contact 200 is fixed relative to the housing 100, and one side of the static contact 200 is exposed from the housing 100 through the exposure hole 111; the signal lead-out sheet 300 is fixed outside the housing 100 and connected to the static contact 200; and the signal lead-out sheet 300 surrounds part of the static contact 200 along the circumference of the static contact 200.

[0049] It can be understood that the signal lead-out sheet 300 is used to transmit a high-voltage signal in the static contact 200 connected thereto to an external structure of the relay, so as to realize sampling of a strong electric signal (i.e., an electric signal passing through the moving and static contacts, and also an electric signal provided to a load), and has the characteristics of simple structure and easy operation. Exemplarily, one end of the signal lead-out sheet 300 is connected to the static contact 200, and the other end is connected to a connector or a PCB (Printed Circuit Board) of a client, etc.

[0050] In assembling the relay in the related art, the static contact 200 and the signal lead-out sheet 300 are prone to be disconnected or unreliable connection due to the incoming material or uneven welding. In the relay provided by the embodiment of the present disclosure, the signal lead-out sheet 300 only surrounds part of the static contact 200, and the signal lead-out sheet 300 is not arranged in a full circle. When connecting the signal lead-out sheet 300 and the static contact 200, since the signal lead-out sheet 300 is partially discontinuous around the static contact 200, the shape of the signal lead-out sheet 300 can be corrected as needed under the premise of satisfying the riveting or welding at the end, so as to avoid the signal lead-out sheet 300 from being upturned, so that the signal lead-out sheet 300 and the static contact 200 are effectively connected and reliably contacted, and the connection strength and connection effect of the static contact 200 and the signal lead-out sheet 300 are improved.

[0051] Meanwhile, since the signal lead-out sheet 300 does not need to surround the static contact 200 in a full circle, the size of the signal lead-out sheet 300 can be reduced to save materials and reduce the preparation cost.

[0052] When fixing the signal lead-out sheet 300 relative to the static contact 200, the signal lead-out sheet 300 can be fixed to the static contact 200 only around the two side ends of the static contact 200, or the signal lead-out sheet 300 can be fixed to the static contact 200 around the whole static contact 200. As an example, as shown in FIG. 4, when fixing the signal lead-out sheet 300 to the surface of the static contact 200 only around the two side ends of the static contact 200, if the end A and the end B of the signal lead-out sheet 300 have a height difference along the lead-out direction of the static contact 200 from the shell 100 (for example, the direction is defined as the height direction), the height of the end A and the end B can be adjusted as needed so that the end A and the end B are effectively fitted to the static contact 200 and fixed to the static contact 200.

[0053] In an embodiment, please continue to refer to the structure shown in FIG. 1, the shell 100 includes a first shell 110 and a second shell 120, and the second shell 120 is fixed relative to the first shell 110 to form a cavity for accommodating other devices in the relay. It is worth noting that, as shown in FIG. 1, the first shell 110 is shown as a cover plate structure, and the second shell 120 is shown as a cover structure. Of course, the structure of the first shell 110 and the second shell 120 is not limited to that shown in FIG. 1, and the first shell 110 and the second shell 120 can also be cover structures, which can be set as needed, and will not be described here.

[0054] In addition, the fixing form between the second shell 120 and the first shell 110 can be selected as needed, for example, one or more of clamping, interference connection or gluing can be selected.

[0055] Please continue to refer to the structure shown in FIG. 1 to FIG. 3, it is worth noting that the number of static contacts 200 in the relay can be two or other numbers. When setting the signal lead-out sheet 300, only one static contact 200 position can be provided with the signal lead-out sheet 300, or each static contact 200 can be provided with the signal lead-out sheet 300. Of course, when two or more numbers of static contacts 200 are provided with the signal lead-out sheet 300, the structures of the signal lead-out sheets 300 connected with different static contacts 200 can be the same or different. Specifically, each signal lead-out sheet 300 can be set according to the following structure.

[0056] In one embodiment, please refer to the structure shown in FIG. 4 to FIG. 5 in combination with FIG. 1 to FIG. 3, the signal lead-out sheet 300 includes a first extension section 310, the first extension section 310 surrounds and is connected with the static contact 200; the side edge line of the first extension section 310 close to the static contact 200 is an arc-shaped edge line, so as to improve the matching degree of the first extension section 310 and the static contact 200.

[0057] In order to ensure the connection reliability of the static contact 200 and the signal lead-out sheet 300, in one embodiment, the relay provided by the embodiment of the present disclosure further includes a glue layer, the static contact 200 is welded with the first extension section 310, and the first extension section 310 is blocked with the glue layer on the side away from the shell 100. For example, when assembling the signal lead-out sheet 300, the head and tail of the first extension section 310 can be welded, and then the structure is further sealed by dispensing glue.

[0058] It is worth noting that the static contact 200 in the relay provided by the embodiment of the present disclosure is a high-temperature static contact 200, and the glue layer around the high-temperature static contact 200 is easy to flow from the gap to the inside of the relay, which affects the cleanliness of the inside of the relay. In one embodiment, please refer to the structure shown in FIG. 6 to FIG. 12 in combination with FIG. 1 to FIG. 5, the inner wall of the exposure hole 111 is provided with a first protruding rib 114; along the circumferential direction of the static contact 200, the first protruding rib 114 surrounds part of the static contact 200, and the two ends of the first protruding rib 114 form a gap; the first extension section 310 is arranged in the gap.

[0059] It should be noted that the first protruding rib 114 cooperates with the first extension section 310 in the signal lead-out sheet 300 to further block the flow of glue, reduce the risk of glue infiltration, and protect the structural performance of the relay.

[0060] In a preferred embodiment, in order to better block the gel flow endosmosis, as shown in FIG. 9, the first convex rib 114 and the first extension section 310 are arranged to form a complete circle around the static contact 200 in the circumferential direction of the static contact 200. For example, as shown in FIG. 9, if the first extension section 310 and the first convex rib 114 are arranged to form a complete circle, the length of the first extension section 310 accounts for one third of the complete circle, and the length of the first convex rib 114 accounts for two thirds of the complete circle.

[0061] It is worth noting that, in order to avoid interference between the first convex rib 114 and the first extension section 310, considering the manufacturing accuracy and assembly accuracy, etc., the first convex rib 114 and the first extension section 310 can have a small gap in the circumferential direction of the static contact 200, i.e., they are arranged to form a complete circle.

[0062] In an embodiment, as shown in FIGS. 6-12, the exposed hole 111 is provided with a second convex rib 115 on the inner wall in the notch, the protruding size of the second convex rib 115 is smaller than that of the first convex rib 114, and the second convex rib 115 abuts against the side surface of the first extension section 310 away from the static contact 200. The second convex rib 115 can reduce the gap between the first extension section 310 and the housing 100, further block the gel flow, reduce the risk of gel endosmosis, and protect the structural performance of the relay.

[0063] In an embodiment, as shown in FIGS. 10-12, in the direction from the static contact 200 to the housing 100, the top surface of the first extension section 310 does not exceed the top surface of the second convex rib 115, so as to ensure the cooperation effect of the second convex rib 115 and the first extension section 310, reduce the risk of gel endosmosis, and protect the structural performance of the relay.

[0064] In the arrangement of the signal lead-out sheet 300, the shape of the signal lead-out sheet 300 can be various, as shown in FIGS. 4 and 5, the first extension section 310 is an arc-shaped extension section. Of course, the signal lead-out sheet 300 can also have an arc-shaped edge line only on one side of the static contact 200, as an example, the first extension section 310 of the signal lead-out sheet 300 is substantially rectangular, and only has an arc-shaped edge line on the side for surrounding the static contact 200.

[0065] In order to effectively adjust the assembly height difference between the signal lead-out sheet 300 and the static contact 200 during assembly, the arc-shaped edge line at least surrounds one third of the static contact 200, and cannot exceed half of the static contact 200.

[0066] It is worth noting that if the arc-shaped edge line is too large in size around the static contact 200 in the circumferential direction, the length of the signal lead-out sheet 300 will be too long, resulting in high assembly precision requirements and greater flatness requirements. If the arc-shaped edge line is too small in size around the static contact 200 in the circumferential direction, the size of the signal lead-out sheet 300 will be too short, making it difficult to correct the shape of the signal lead-out sheet 300 and effectively fit it to the surface of the static contact 200, which will increase the welding difficulty.

[0067] Accordingly, in one embodiment, the length of the arc-shaped edge line is greater than or equal to one-third of a circle concentric with and having the same radius as the arc-shaped edge line, and the length of the arc-shaped edge line is less than one-half of the circle. This structure can facilitate the correction of the shape of the signal lead-out sheet 300, prevent the signal lead-out sheet 300 from being raised, and enable the signal lead-out sheet 300 to be effectively connected and reliably contacted with the static contact 200, thereby improving the connection strength and connection effect of the static contact 200 and the signal lead-out sheet 300.

[0068] In one embodiment, please continue to refer to the structure shown in FIGS. 4-5 in combination with FIGS. 1-3, the signal lead-out sheet 300 further includes a second extension section 320 and a third extension section 330, and the second extension section 320 connects the first extension section 310 and the third extension section 330. The third extension section 330 extends away from the housing 100 and forms a signal lead-out pin. It can be understood that the first extension section 310 and the second extension section 320 are schematically separated by a dashed line in the above-mentioned figures. The signal lead-out pin formed by the third extension section 330 is used to connect the connector or PCB structure of the client.

[0069] It is worth noting that if the side of the fixed housing 100 from which the static contact 200 is led out is the top of the relay, the second extension section 320 can be mounted on the top surface of the housing 100, and the third extension section 330 can further extend away from the top of the housing 100 from the second extension section 320, so as to facilitate the quick plug-in of the connector or PCB structure of the client.

[0070] When the third extension section 330 is provided, a notch or protrusion can be provided on the third extension section 330 according to requirements, so as to facilitate the connection operation, which will not be described in detail.

[0071] In one embodiment, please continue to refer to the structure shown in FIGS. 4-5 in combination with FIGS. 1-3, the first extension section 310 includes a first extension subsection 311 and a second extension subsection 312, the second extension subsection 312 is separated from the first extension subsection 311 at a connection position of the second extension section 320 and the first extension section 310, and the length of the second extension subsection 312 is the same as that of the first extension subsection 311. It can be understood that the first extension subsection 311 and the second extension subsection 312 are schematically separated by a separation line in FIGS. 4 and 5, and the specific position of the first extension subsection 311 and the second extension subsection 312 is not limited thereto.

[0072] It is worth noting that, since the first extension section 310 is connected to the second extension section 320, when the lengths of the first extension subsection 311 and the second extension subsection 312 separated by the second extension section 320 are consistent, it can be ensured that the first extension subsection 311 and the second extension subsection 312 have the same stress when shape adjustment is performed, so that after the end A of the first extension subsection 311 and the end B of the second extension subsection are respectively connected to the static contact 200, the part where the first extension section 310 and the second extension section 320 are connected can be self-adapted to the static contact 200, avoiding the signal lead-out sheet 300 from being raised, so that the whole signal lead-out sheet 300 is effectively connected and reliably contacted with the static contact 200, and further improving the connection strength and connection effect of the static contact 200 and the signal lead-out sheet 300.

[0073] Of course, the lengths of the second extension subsection 312 and the second extension subsection 312 can also be set to be different to meet the connection requirements with the static contact 200, and details are not described herein.

[0074] In one embodiment, please continue to refer to the structure shown in FIGS. 4-5 in combination with FIGS. 1-3, the extension direction of the second extension section 320 and the tangent extension direction of the first extension section 310 at the connection position have an included angle, and the included angle is greater than 0 degrees and less than or equal to 90 degrees.

[0075] It should be noted that, when the second extension section 320 is arranged, the second extension section 320 can be parallel to one side of the shell 100, and at this time, when the included angle is greater than 0 degrees and less than 90 degrees, the included angle between the second extension section 320 and the first extension section 310 is small, so as to arrange the second extension section 320 close to the middle part of the relay, and further facilitate the centralized arrangement of the plurality of signal lead-out feet, and facilitate the plug-in operation of the external client.

[0076] Of course, the above-mentioned included angle can also be set to 90 degrees, so as to divide the first extension subsection 311 and the second extension subsection 312, reasonably distribute the stress, and reduce the preparation difficulty.

[0077] In one embodiment, please refer to the structure shown in Figs. 6-8 in combination with Figs. 1-5, the top surface of the shell 100 is provided with a mounting groove 112, and at least part of the second extension segment 320 is arranged in the mounting groove 112 to pre-position the second extension segment 320 through the mounting groove 112, avoid displacement of the signal lead-out sheet 300 relative to the shell 100 during installation, facilitate subsequent fixing operation of the static contact 200 and the signal lead-out sheet 300, and improve contact reliability of the two.

[0078] It is worth noting that, as shown in Fig. 6, the shell 100 surface is only provided with the mounting groove 112 to facilitate installation of the second extension segment 320. Of course, the side wall of the mounting groove 112 can also be provided with a limiting structure such as a protrusion to limit the second extension segment 320 through the limiting structure to avoid the signal lead-out sheet 300 from being pulled out of the mounting groove 112, and further improve the subsequent assembly effect.

[0079] As shown in Fig. 6, in an example, the mounting groove 112 is provided with a slope surface S near the position of the static contact 200. During assembly of the first extension segment 310 and the static contact 200, if the end A and the end B of the first extension segment 310 in Fig. 4 are fixed on the surface of the static contact 200, the part of the first extension segment 310 located at the connection position of the first extension sub-segment 311 and the second extension sub-segment 312 can be more easily deformed in the height direction relative to the second extension segment 320 located at the position of the slope surface S to adapt to the static contact 200, thereby improving the connection reliability of the whole signal lead-out sheet 300 and the static contact 200.

[0080] In one embodiment, please continue to refer to the structure shown in Figs. 4-5 in combination with Figs. 1-3, the signal lead-out sheet 300 further comprises a fourth extension segment 340, which is bent relative to the second extension segment 320 and inserted into the shell 100 to play a role of fixing and preventing external force from pulling out the signal lead-out sheet 300.

[0081] It is worth noting that the included angle between the fourth extension segment 340 and the second extension segment 320 has multiple possibilities. As an example, the fourth extension segment 340 and the second extension segment 320 form a 90-degree right angle, that is, the fourth extension segment 340 is perpendicularly folded relative to the second extension segment 320.

[0082] When the fourth extension segment 340 is fixed with the shell 100, multiple connection modes such as clamping and gluing exist between the two. In one embodiment, as shown in Fig. 6, the shell 100 is provided with a groove 113, and the fourth extension segment 340 is in interference fit with the groove 113. This interference fit mode is simple to operate, can facilitate to reduce assembly difficulty, and can improve assembly efficiency.

[0083] In one embodiment, the fourth extending section 340 is provided with barbs 341 on the surface thereof, as shown in FIG. 4. The fourth extending section 340 is provided with the barbs 341 to be in interference fit with the recess 113, as shown in FIG. 6. It is understood that the surface of the fourth extending section 340 can be provided with protrusions with inclined surfaces for guiding insertion into the recess 113.

[0084] It is noted that the material hardness of the housing 100 is less than that of the signal lead-out piece 300. After the fourth extending section 340 with the barbs 341 is inserted into the recess 113, the barbs 341 are engaged with the inner wall of the recess 113 to improve the engagement strength between the signal lead-out piece 300 and the housing 100.

[0085] In one embodiment, the signal lead-out piece 300 is of an integrated structure. For example, the signal lead-out piece 300 can be integrally formed by a bending process or a casting process.

[0086] It is noted that when the signal lead-out piece 300 is of an integrated structure, the structural strength of the signal lead-out piece 300 can be improved, thereby improving the connection reliability between the signal lead-out piece 300 and the static contact 200 and other structures.

[0087] In one embodiment, as shown in FIGS. 6-12, the housing 100 is provided with a retaining wall 116 surrounding the exposed hole 111 along the circumferential direction of the static contact 200. The retaining wall 116 is provided with a missing portion (not labeled in the drawings), and the second extending section 320 is connected to the first extending section 310 located in the retaining wall 116 from the missing portion. It is understood that the missing portion of the retaining wall 116 is communicated with the mounting groove 112, as shown in FIG. 6.

[0088] It is noted that on one hand, the retaining wall 116 can pre-position and limit the first extending section 310 to define the approximate position of the first extending section 310, so as to facilitate subsequent precise positioning and connection operations of the first extending section 310 and the static contact 200. On the other hand, the retaining wall 116 and the static contact 200 form a containing space therebetween, which can facilitate subsequent injection of a glue layer in the process, and the glue layer has certain flow resistance to prevent the glue from overflowing, thereby improving the cleanliness of the relay.

[0089] It is noted that the height of the retaining wall 116 can be set according to requirements, and details are not described herein.

[0090] In one embodiment, as shown in FIGS. 10-12, the static contact 200 is provided with a sinking surface, and the signal lead-out sheet 300 is placed on the surface of the sinking surface and connected to the sinking surface. The sinking surface design of the static contact 200 in this embodiment can facilitate the connection operation of the signal lead-out sheet 300 with the static contact 200. At the same time, since the embodiment is provided with a sinking section of the plane on the static contact 200, after the signal lead-out sheet 300 is installed, it will not affect the installation of the original copper bar of the customer.

[0091] Finally, it should be noted that the various embodiments / embodiments provided by the present disclosure can be combined with each other without contradiction, which will not be illustrated one by one here.

[0092] In the embodiments of the present disclosure, the terms "first", "second", "third" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0093] In the description of the embodiments of the present disclosure, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present disclosure and simplifying the description, and therefore, cannot be understood as indicating or implying that the devices or units referred to must have a particular direction, be constructed and operated in a particular orientation, and therefore, cannot be understood as limiting the embodiments of the present disclosure.

[0094] In the description of the present disclosure, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0095] The above is only the preferred embodiment of the present disclosure, and is not intended to limit the present disclosure. Those skilled in the art can make various modifications and changes to the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A relay characterized by comprising: The relay comprises: a housing provided with an exposure hole; a static contact fixed relative to the housing and exposed from the housing through the exposure hole; a signal lead-out sheet fixed outside the housing and connected to the static contact, the signal lead-out sheet surrounding part of the static contact along the circumference of the static contact.

2. The relay according to claim 1, characterized in that The signal lead-out sheet comprises a first extension section surrounding and connected to the static contact, and a side edge of the first extension section close to the static contact is an arc-shaped edge.

3. The relay according to claim 2, characterized in that The relay further comprises a glue layer between the static contact and the first extension section, and the first extension section is blocked by the glue layer on the side away from the housing.

4. The relay according to claim 3, characterized in that An inner wall of the exposure hole is provided with a first protruding rib, the first protruding rib surrounds part of the static contact along the circumference of the static contact, and both ends of the first protruding rib form notches, and the first extension section is arranged in the notches.

5. The relay of claim 4, wherein The first protruding rib and the first extension section surround the static contact in a whole circle along the circumference of the static contact.

6. The relay of claim 4, wherein The inner wall of the exposure hole in the notches is provided with a second protruding rib, the protruding size of the second protruding rib is smaller than that of the first protruding rib, and the second protruding rib abuts against the side surface of the first extension section away from the static contact.

7. The relay according to claim 6, characterized in that The top surface of the signal lead-out sheet does not exceed the top surface of the second protruding rib in the direction of the signal lead-out sheet leading out of the housing.

8. A relay according to any one of claims 2 to 7, characterised in that, The first extension section is an arc-shaped extension section.

9. A relay according to any one of claims 2-7, characterised in that The length of the arc-shaped edge is greater than or equal to one third of a circle concentric with the arc-shaped edge and having the same radius, and the length of the arc-shaped edge is less than one half of the circle concentric with the arc-shaped edge and having the same radius.

10. A relay according to any one of claims 2-7, characterised in that The signal lead-out sheet further comprises a second extension section and a third extension section, the second extension section connects the first extension section and the third extension section, and the third extension section extends away from the housing to form a signal lead-out leg.

11. The relay of claim 10, wherein The first extension section comprises a first extension subsection and a second extension subsection, the second extension subsection is separated from the first extension subsection at a connection position between the second extension section and the first extension section, and the length of the second extension subsection is the same as that of the first extension subsection.

12. The relay of claim 11, wherein, The extension direction of the second extension section and the tangent extension direction of the first extension section at the connection position have an included angle, the included angle is greater than 0 degrees and less than or equal to 90 degrees.

13. The relay of claim 10, wherein, The top surface of the housing is provided with a mounting groove, and at least part of the second extension section is arranged in the mounting groove.

14. The relay of claim 10, wherein, The signal lead-out sheet further comprises a fourth extension section, the fourth extension section is bent relative to the second extension section and inserted into the housing.

15. The relay of claim 14, wherein, The housing is provided with a groove, and the fourth extension section is in interference fit with the groove.

16. The relay of claim 15, wherein, The surface of the fourth extension section is provided with a barb, and the fourth extension section is in interference fit with the groove through the barb.

17. The relay of claim 10, wherein The signal lead-out sheet is in one-piece structure.

18. The relay of claim 10, wherein, The housing is provided with a retaining wall surrounding the exposure hole along the circumference of the static contact, the retaining wall is provided with a missing part, and the second extension section connects the first extension section arranged in the retaining wall from the missing part.

19. The relay according to any one of claims 1 to 7, characterized in that The stationary contact is provided with a sink face, and the signal lead-out sheet is placed on the surface of the sink face and connected to the sink face.

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