Relay

Abstract

The utility model relates to the technical field of electronic control devices, in particular to a relay. The relay comprises a housing which is provided with an exposure hole; the static contact is fixed relative to the shell, and one side of the static contact is exposed out of the shell from the exposing hole; the signal leading-out sheet is fixed on the outer side of the shell and is connected with the static contact; the signal leading-out sheet surrounds part of the static contact in the circumferential direction of the static contact. When the signal leading-out sheet and the static contact are connected, the signal leading-out sheet is divided into a non-continuous structure around the static contact part, so that the shape of the signal leading-out sheet can be corrected and the signal leading-out sheet can be prevented from warping upwards according to the requirement on the premise of meeting ending riveting or welding, so that the signal leading-out sheet and the static contact are effectively connected and reliably contacted; therefore, the connection strength and the connection effect of the static contact and the signal leading-out sheet are improved. Therefore, the signal leading-out sheet and the static contact in the relay can be effectively connected, and the reliability after the signal leading-out sheet and the static contact are connected is improved.

Description

Technical Field

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

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

[0003] When assembling the housing, static contact and signal lead-out sheet of an existing DC relay, 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 cold weld during welding and affect the reliability of the connection between the two, or it may be difficult to fit the signal lead-out sheet and the static contact together. Utility Model Content

[0004] The embodiment of the present application provides a relay, in which a signal lead-out piece and a stationary contact in the relay can be effectively connected, and the reliability after the signal lead-out piece and the stationary contact are connected is improved.

[0005] An embodiment of the present application provides a relay, comprising:

[0006] A shell, wherein the shell is provided with an exposure hole;

[0007] A stationary contact, the stationary contact is fixed relative to the housing, and one side of the stationary contact is exposed from the housing through the exposure hole;

[0008] The signal lead-out piece is fixed to the outer side of the shell and connected to the stationary contact; along the circumference of the stationary contact, the signal lead-out piece surrounds part of the stationary contact.

[0009] According to some embodiments of the utility model, the signal lead-out sheet includes a first extension section, the first extension section surrounds the static contact and is 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.

[0010] According to some embodiments of the utility model, the relay further includes a glue layer, the static contact and the first extension section are welded, and the glue layer is sealed on a side of the first extension section facing away from the housing.

[0011] According to some embodiments of the utility model, the inner wall of the exposure hole is provided with a first rib; along the circumference of the static contact, the first rib surrounds a portion of the static contact, and notches are formed at both ends of the first rib; the first extension section is placed in the notch.

[0012] According to some embodiments of the utility model, along the circumference of the stationary contact, the first rib and the first extension section completely surround the stationary contact.

[0013] According to some embodiments of the utility model, the exposure hole is provided with a second rib on the inner wall located in the notch, the protruding size of the second rib is smaller than the protruding size of the first rib, and the second rib abuts against the side surface of the first extension section away from the static contact.

[0014] According to some embodiments of the utility model, along the direction in which the static contact is led out of the housing, the top surface of the signal lead-out sheet does not exceed the top surface of the second convex rib.

[0015] According to some embodiments of the utility model, the first extension section is an arc-shaped extension section.

[0016] According to some embodiments of the utility model, the length of the arcuate edge line is greater than or equal to one third of a circle concentric with the arcuate edge line and having the same radius, and the length of the arcuate edge line is less than one half of a circle concentric with the arcuate edge line and having the same radius.

[0017] According to some embodiments of the utility model, the signal lead-out sheet further includes a second extension section and a third extension section, the second extension section connects the first extension section and the third extension section; the third extension section extends away from the housing to form a signal lead-out pin.

[0018] According to some embodiments of the utility model, the first extension segment includes a first extension sub-segment and a second extension sub-segment, the second extension sub-segment and the first extension sub-segment are separated from the connection position of the second extension segment and the first extension segment, and the length of the second extension sub-segment is the same as the length of the first extension sub-segment.

[0019] According to some embodiments of the utility model, an extension direction of the second extension segment and an extension direction of a tangent of the first extension segment at the connection position have an angle, and the angle is greater than 0 degrees and less than or equal to 90 degrees.

[0020] According to some embodiments of the utility model, a mounting groove is provided on the top surface of the shell, and at least a portion of the second extension section is placed in the mounting groove.

[0021] According to some embodiments of the utility model, the signal lead-out sheet further includes a fourth extension segment, and the fourth extension segment is bent relative to the second extension segment and inserted into the housing.

[0022] According to some embodiments of the utility model, the housing is provided with a groove; and the fourth extension section is interference fit with the groove.

[0023] According to some embodiments of the utility model, the surface of the fourth extension section is provided with barbs; the fourth extension section is interference fit with the groove through the barbs.

[0024] According to some embodiments of the utility model, the signal lead-out sheet is an integrally formed structure.

[0025] According to some embodiments of the utility model, 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 portion, and the second extension section is connected from the missing portion to the first extension section located in the retaining wall.

[0026] According to some embodiments of the utility model, the stationary contact is provided with a depression surface, and the signal lead-out piece is placed on the surface of the depression surface and connected to the depression surface.

[0027] One embodiment of the above utility model has at least the following advantages or beneficial effects:

[0028] 1. In the relay provided by the present application, 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 divided into a discontinuous structure around the static contact part, the shape of the signal lead-out sheet can be corrected as needed on the premise of satisfying the final riveting or welding, to avoid the signal lead-out sheet from warping up, 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 between 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 to save materials and reduce preparation costs.

[0029] 2. In the relay provided by the present application, a first convex rib is provided on the inner wall of the exposure hole; along the circumference of the static contact, the first convex rib surrounds part of the static contact, and notches are formed at both ends of the first convex rib; the first extension section is placed in the notch. The first convex rib cooperates with the first extension section in the signal lead-out sheet to further block the flow of colloid, reduce the risk of colloid infiltration, and ensure the structural performance of the relay.

[0030] 3. In the relay provided by the present application, a second convex rib is provided on the inner wall of the exposure hole located in the notch, the protruding size of the second convex rib is smaller than the protruding size of the first convex rib, and the second convex rib abuts against the surface of the side of the first extension section away from the static contact. The second convex rib can reduce the gap between the first extension section and the housing to further block the flow of colloid, reduce the risk of colloid infiltration, and ensure the structural performance of the relay.

[0031] 4. In the relay provided in the present application, a side edge line of the first extension section in the signal lead-out piece close to the static contact is an arc-shaped side line to improve the matching degree between the first extension section and the static contact.

[0032] 5. In the relay provided by the present application, the housing is provided with a retaining wall surrounding the exposed hole along the circumference of the static contact; the retaining wall is provided with a missing portion, and the second extension section is connected to the first extension section located in the retaining wall from the missing portion. On the one hand, the retaining wall can pre-position and limit the first extension section, and circle 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 static contact; on the other hand, the accommodation space formed between the retaining wall and the static contact can facilitate the injection of the glue layer in the subsequent process, and use the certain flow resistance of the colloid to prevent the colloid from overflowing, which can improve the cleanliness of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 What is shown is a three-dimensional structural schematic diagram of a relay provided in an embodiment of the utility model;

[0034] Figure 2 It shows Figure 1 A schematic diagram of the three-dimensional structure of the relay at another angle;

[0035] Figure 3 It shows Figure 1 A schematic diagram of the three-dimensional structure of the relay at another angle;

[0036] Figure 4 It shows Figure 1 Schematic diagram of the three-dimensional structure of the signal lead-out sheet;

[0037] Figure 5 It shows Figure 2 A schematic diagram of the plan view of the signal lead-out sheet;

[0038] Figure 6 It shows Figure 1 A schematic diagram of the three-dimensional structure of the middle part of the shell;

[0039] Figure 7 It shows Figure 6 A schematic diagram of the three-dimensional structure of the middle structure at another angle;

[0040] Figure 8 It shows Figure 6 The plan view of the structure in the figure;

[0041] Fig. 9 It shows Figure 1 Schematic diagram of the relay in the figure;

[0042] Fig.10 It shows Fig. 9 Schematic diagram of the cross section at AA in the middle;

[0043] Fig.11 It shows Fig.10 The enlarged schematic diagram of the M in the middle;

[0044] Fig.12 It shows Fig. 9 Schematic diagram of the cross section at BB in the middle.

[0045] The following are the descriptions of the reference numerals:

[0046] 100, shell; 110, first shell; 111, exposure hole; 112, installation 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 sub-section; 312, second extension sub-section; 320, second extension section; 330, third extension section; 340, fourth extension section; 341, barb; S, slope surface. DETAILED DESCRIPTION

[0047] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0048] Figure 1 What is shown is a three-dimensional structural schematic diagram of a relay provided in an embodiment of the utility model; Figure 2 It shows Figure 1 A schematic diagram of the three-dimensional structure of the relay at another angle; Figure 3 It shows Figure 1 The three-dimensional structure diagram of the relay at another angle. Figures 1 to 3 As shown, the embodiment of the present application provides a relay, which comprises: 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 to the outside of the housing 100 and connected to the static contact 200; along the circumference of the static contact 200, the signal lead-out sheet 300 surrounds a portion of the static contact 200.

[0049] It can be understood that the signal lead-out sheet 300 is used to transmit the high-voltage signal in the static contact 200 connected thereto to the external structure of the relay, so as to sample the strong electric signal (i.e., the electric signal passing through the moving and static contacts, and also the electric signal provided to the 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 the connector or PCB (Printed Circuit Board) and other structures of the client.

[0050] When assembling the relay in the related art, the risk of the static contact 200 and the signal lead-out piece 300 being unable to connect or being unreliably connected is easily caused due to uneven incoming materials or welding. In the relay provided in the embodiment of the present application, the signal lead-out piece 300 only surrounds part of the static contact 200, and the signal lead-out piece 300 is not arranged in a full circle. When connecting the signal lead-out piece 300 and the static contact 200, since the signal lead-out piece 300 surrounding the static contact 200 is a non-continuous structure, the shape of the signal lead-out piece 300 can be corrected as needed under the premise of satisfying the final riveting or welding, so as to avoid the signal lead-out piece 300 from warping up, so that the signal lead-out piece 300 and the static contact 200 are effectively connected and reliably contacted, thereby improving the connection strength and connection effect between the static contact 200 and the signal lead-out piece 300.

[0051] At the same time, since the signal lead-out sheet 300 does not need to completely surround the stationary contact 200 , the size of the signal lead-out sheet 300 can be reduced to save materials and reduce manufacturing costs.

[0052] When the signal lead-out sheet 300 is fixed relative to the stationary contact 200, the signal lead-out sheet 300 may be used to surround the two side ends of the stationary contact 200 and fixed to the stationary contact 200, or the signal lead-out sheet 300 may be used to surround the entire stationary contact 200 and fixed to the stationary contact 200. As an example, the signal lead-out sheet 300 may be used to surround the two side ends of the stationary contact 200 and fixed to the stationary contact 200, as shown in FIG. Figure 4 As shown, when the signal lead-out sheet 300 is fixed on the surface of the stationary contact 200, if there is a height difference between the end A and the end B of the signal lead-out sheet 300 along the lead-out direction of the stationary contact 200 from the housing 100 (this direction is exemplarily specified as the height direction), the heights of the end A and the end B can be adjusted as needed so that both the end A and the end B effectively fit the stationary contact 200 and are fixed to the stationary contact 200.

[0053] In one embodiment, please continue to refer to Figure 1 In the structure shown, the housing 100 includes a first housing 110 and a second housing 120, and the second housing 120 is fixed relative to the first housing 110 to form a chamber for accommodating other components in the relay. Figure 1 As shown, the first housing 110 is shown as a cover structure, and the second housing 120 is shown as a cover structure. Of course, the structures of the first housing 110 and the second housing 120 are not limited to Figure 1 As shown, the first shell 110 and the second shell 120 can also be both cover structures, which can be specifically configured according to requirements and will not be described in detail here.

[0054] In addition, the fixing form between the second shell 120 and the first shell 110 can be selected according to the needs. For example, one or more of the following methods can be selected: snap connection, interference connection or gluing.

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

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

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

[0058] It is worth noting that the static contact 200 in the relay provided in the embodiment of the present application is a high-temperature static contact 200. The adhesive layer around the high-temperature static contact 200 easily flows downward from the gap into the interior of the relay, affecting the cleanliness of the interior of the relay. Figures 1 to 5 refer to Figures 6 to 12 In the structure shown, the inner wall of the exposure hole 111 is provided with a first rib 114; along the circumference of the static contact 200, the first rib 114 surrounds a portion of the static contact 200, and notches are formed at both ends of the first rib 114; the first extension section 310 is placed in the notch.

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

[0060] In a preferred embodiment, in order to better prevent the colloid from flowing into the body, Fig. 9 As shown, along the circumference of the stationary contact 200, the first rib 114 and the first extension section 310 completely surround the stationary contact 200. Fig. 9 As shown, if the first extension section 310 and the first rib 114 form a full circle structure, the length of the first extension section 310 accounts for one third of the full circle length, and the length of the first rib 114 accounts for two thirds of the full circle.

[0061] It is worth noting that, considering issues such as preparation accuracy and assembly accuracy, in order to avoid interference between the first rib 114 and the first extension section 310, in the specific setting, the first rib 114 and the first extension section 310 can have a smaller gap in the circumferential direction of the static contact 200, that is, the two approximately form a full circle structure.

[0062] In one embodiment, please continue to combine Figures 1 to 5 refer to Figures 6 to 12 In the structure shown, the exposure hole 111 is provided with a second rib 115 on the inner wall located in the notch, the protruding size of the second rib 115 is smaller than the protruding size of the first rib 114, and the second rib 115 abuts against the surface of the first extension section 310 on one side away from the static contact 200. The second rib 115 can reduce the gap between the first extension section 310 and the housing 100 to further block the flow of colloid, reduce the risk of colloid infiltration, and ensure the structural performance of the relay.

[0063] In one embodiment, Figures 10 to 12 As shown, along the direction in which the static contact 200 is led out of the housing 100, the top surface of the first extension section 310 does not exceed the top surface of the second rib 115, so as to ensure the matching effect between the second rib 115 and the first extension section 310, reduce the risk of colloid infiltration, and ensure the structural performance of the relay.

[0064] When setting the signal lead-out sheet 300, there are many possible forms of the signal lead-out sheet 300, such as Figure 4 and Figure 5 As shown, 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 only on one side of the first extension section 310 surrounding the stationary contact 200. As an example, the first extension section 310 of the signal lead-out sheet 300 is roughly rectangular, and only forms an arc-shaped edge at the position for surrounding the stationary contact 200.

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

[0066] It is worth noting that if the size of the arc edge around the static contact 200 along the circumferential direction is too large, 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 size of the arc edge around the static contact 200 along the circumferential direction is too small, the size of the signal lead-out sheet 300 will be too short, making it difficult to modify the shape of the signal lead-out sheet 300 and difficult to effectively fit on the surface of the static contact 200, which will increase the difficulty of welding.

[0067] Accordingly, in one embodiment, the length of the arc edge is greater than or equal to one third of a circle that is concentric with the arc edge and has the same radius, and the length of the arc edge is less than one half of a circle that is concentric with the arc edge and has the same radius. This structural setting can facilitate the correction of the shape of the signal lead-out sheet 300, prevent the signal lead-out sheet 300 from warping up, and make the signal lead-out sheet 300 effectively connected and reliably contacted with the static contact 200, thereby improving the connection strength and connection effect between the static contact 200 and the signal lead-out sheet 300.

[0068] In one embodiment, please continue to combine Figures 1 to 3 refer to Figures 4 to 5 In the structure shown, the signal lead-out sheet 300 further includes a second extension section 320 and a third extension section 330, wherein 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 to form 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 dotted line in the above drawings; the signal lead-out pin formed by the third extension section 330 is used to connect to a structure such as a connector or PCB of the client.

[0069] It is worth noting that if the side of the fixed housing 100 that leads out the static contact 200 is the top of the relay, the second extension section 320 can be installed on the top surface of the housing 100, and the third extension section 330 can be further extended from the second extension section 320 toward the top of the housing 100 to facilitate quick connection with the client's connector or PCB and other structures.

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

[0071] In one embodiment, please continue to combine Figures 1 to 3 refer to Figures 4 to 5 In the structure shown, 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 the connection position between the second extension section 320 and the first extension section 310. The length of the second extension subsection 312 is the same as the length of the first extension subsection 311. It can be understood that Figure 4 and Figure 5 The first extension sub-segment 311 and the second extension sub-segment 312 are schematically separated by a separation line, and the specific positions of the first extension sub-segment 311 and the second extension sub-segment 312 are 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 sub-segment 311 and the second extension sub-segment 312 into which the first extension section 310 is divided by the second extension section 320 are set to be the same, it can be ensured that the first extension sub-segment 311 and the second extension sub-segment 312 have the same stress when adjusting their shapes, so that after the end A of the first extension sub-segment 311 and the end B of the second extension sub-segment are distributed and connected to the static contact 200, the portion where the first extension section 310 and the second extension section 320 are connected can be adaptively fitted to the static contact 200 to avoid the signal lead-out piece 300 from warping up, so that the signal lead-out piece 300 as a whole is effectively connected and reliably contacted with the static contact 200, thereby improving the connection strength and connection effect between the static contact 200 and the signal lead-out piece 300.

[0073] Of course, the lengths of the second extension sub-segments 312 and the second extension sub-segments 312 may also be different to meet the connection requirements with the static contact 200 , which will not be described in detail.

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

[0075] It should be noted that when arranging the second extension section 320, the second extension section 320 can be parallel to a side of the housing 100. At this time, when the angle is greater than 0 degrees and less than 90 degrees, the angle between the second extension section 320 and the first extension section 310 is smaller, so that the second extension section 320 can be arranged close to the middle position of the relay, thereby facilitating the centralized arrangement of multiple signal lead-out pins and facilitating external client plug-in operations.

[0076] Of course, the angle may also be set to 90 degrees, so as to divide the first extension sub-segment 311 and the second extension sub-segment 312 , reasonably distribute stress, and reduce the difficulty of preparation.

[0077] In one embodiment, please combine Figures 1 to 5 refer to Figures 6 to 8In the structure shown, a mounting groove 112 is provided on the top surface of the housing 100, and at least a portion of the second extension section 320 is placed in the mounting groove 112, so that the second extension section 320 can be pre-positioned through the mounting groove 112 to avoid displacement of the signal lead-out piece 300 relative to the housing 100 during the installation process, which can facilitate the subsequent fixing operation of the static contact 200 and the signal lead-out piece 300 and improve the contact reliability between the two.

[0078] It is worth noting that Figure 6 The surface of the housing 100 shown is only provided with a mounting groove 112 to facilitate the installation of the second extension section 320. Of course, the side wall of the mounting groove 112 may also be provided with a limiting structure such as a protrusion, so as to limit the second extension section 320 through a limiting structure to prevent the signal lead-out sheet 300 from falling out of the mounting groove 112, thereby further improving the subsequent assembly effect.

[0079] like Figure 6 As shown, in one example, the mounting groove 112 is provided with a slope surface S near the stationary contact 200. In the process of assembling the first extension section 310 and the stationary contact 200, if Figure 4 The end A and the end B of the first extension section 310 are fixed on the surface of the static contact 200. The portion of the first extension section 310 located at the connection position between the first extension sub-section 311 and the second extension sub-section 312 can be more easily deformed in the height direction relative to the second extension section 320 located at the slope surface S, so as to adaptively fit the static contact 200, thereby improving the connection reliability between the signal lead-out piece 300 as a whole and the static contact 200.

[0080] In one embodiment, please continue to combine Figures 1 to 3 refer to Figures 4 to 5 In the structure shown, the signal lead-out sheet 300 further includes a fourth extension section 340 , which is bent relative to the second extension section 320 and inserted into the housing 100 to fix and prevent the signal lead-out sheet 300 from being pulled out by external force.

[0081] It is worth noting that there are many possibilities for the angle between the fourth extension section 340 and the second extension section 320. As an example, the fourth extension section 340 and the second extension section 320 form a 90-degree right angle, that is, the fourth extension section 340 is vertically folded relative to the second extension section 320.

[0082] When fixing the fourth extension section 340 and the housing 100, there are multiple connection methods such as snap connection, gluing, etc. Figure 6 As shown, the housing 100 is provided with a groove 113, and the fourth extension section 340 is interference-fitted with the groove 113. The interference-fitting method is simple to operate, convenient for reducing assembly difficulty, and can improve assembly efficiency.

[0083] In a specific embodiment, Figure 4 As shown, the surface of the fourth extension section 340 is provided with barbs 341; the fourth extension section 340 is connected to the Figure 6 The shown groove 113 is interference fit. It can be understood that the surface of the fourth extension section 340 can be understood as being provided with a protrusion, and the protrusion has a guiding inclined surface that is convenient for insertion into the interior of the groove 113.

[0084] It is worth noting that the material hardness of the housing 100 is less than that of the signal connecting sheet. After the fourth extension section 340 with the barbs 341 is inserted into the groove 113, the barbs 341 are engaged with the inner wall of the groove 113 to enhance the engagement strength between the signal lead-out sheet 300 and the housing 100.

[0085] In one embodiment, the signal lead-out sheet 300 is an integrally formed structure. Exemplarily, the signal lead-out sheet 300 can be integrally formed by a bending process or a casting process.

[0086] It should be noted that when the signal lead-out piece 300 is an integrally formed 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 stationary contact 200 and other structures.

[0087] In one embodiment, Figures 6 to 12 As shown, the housing 100 is provided with a retaining wall 116 surrounding the exposure hole 111 along the circumference of the static contact 200; the retaining wall 116 is provided with a missing portion (not marked in the figure), and the second extension section 320 is connected from the missing portion to the first extension section 310 located in the retaining wall 116. It can be understood that, as Figure 6 As shown, the missing portion of the retaining wall 116 is connected to the mounting groove 112 .

[0088] It should be noted that, on the one hand, the retaining wall 116 can pre-position and limit the first extension section 310, and circle the approximate position of the first extension section 310, so as to facilitate the subsequent precise positioning and connection operations between the first extension section 310 and the static contact 200; on the other hand, a accommodating space is formed between the retaining wall 116 and the static contact 200, which can facilitate the injection of the glue layer in the subsequent process, and utilize the certain flow resistance of the colloid to prevent the overflow of the colloid, thereby improving the cleanliness of the relay.

[0089] It is worth noting that the height of the retaining wall 116 can be set according to demand, and the details will not be repeated here.

[0090] In one embodiment, Figures 10 to 12As shown, 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 between the signal lead-out sheet 300 and the static contact 200. At the same time, since the static contact 200 is provided with a small section of the plane that sinks, after the signal lead-out sheet 300 is installed, the installation of the original copper busbar of the customer will not be affected.

[0091] Finally, it should be noted that: it is understandable that the various embodiments / implementations provided by the present utility model can be combined with each other without causing any contradiction, and will not be illustrated one by one here.

[0092] In the embodiments of the utility model, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise clearly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0093] In the description of the utility model embodiments, it needs to be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model embodiments and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, cannot be understood as a limitation on the utility model embodiments.

[0094] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0095] The above are only preferred embodiments of the utility model embodiments, and are not intended to limit the utility model embodiments. For those skilled in the art, the utility model embodiments may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model embodiments shall be included in the protection scope of the utility model embodiments.

Claims

1. A relay, characterized in that: include: A shell, wherein the shell is provided with an exposure hole; A stationary contact, wherein the stationary contact is fixed relative to the housing, and one side of the stationary contact is exposed from the housing through the exposure hole; A signal lead-out piece is fixed to the outer side of the housing and connected to the stationary contact; along the circumference of the stationary contact, the signal lead-out piece surrounds a portion of the stationary contact.

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

3. The relay according to claim 2, characterized in that: The relay further comprises a glue layer, the static contact and the first extension section are welded, and the glue layer is sealed on a side of the first extension section away from the housing.

4. The relay according to claim 3, characterized in that: The inner wall of the exposure hole is provided with a first convex rib; along the circumference of the static contact, the first convex rib surrounds a portion of the static contact, and notches are formed at both ends of the first convex rib; the first extension section is placed in the notch.

5. The relay according to claim 4, characterized in that: Along the circumference of the stationary contact, the first rib and the first extension section completely surround the stationary contact.

6. The relay according to claim 4, characterized in that: The exposure hole is provided with a second convex rib on the inner wall located in the notch, the protruding size of the second convex rib is smaller than the protruding size of the first convex rib, and the second convex rib abuts against a side surface of the first extension section away from the static contact.

7. The relay according to claim 6, characterized in that: Along the direction in which the stationary contact is led out of the housing, the top surface of the signal lead-out sheet does not exceed the top surface of the second convex rib.

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

9. The relay according to any one of claims 2 to 7, characterized in that: The length of the arcuate edge line is greater than or equal to one third of a circle that is concentric with the arcuate edge line and has the same radius, and the length of the arcuate edge line is less than one half of a circle that is concentric with the arcuate edge line and has the same radius.

10. The relay according to any one of claims 2 to 7, characterized in that: The signal lead-out sheet further includes a second extension section and a third extension section, wherein the second extension section connects the first extension section and the third extension section; and the third extension section extends in a direction away from the housing to form a signal lead-out pin.

11. The relay according to claim 10, characterized in that: The first extension segment includes a first extension sub-segment and a second extension sub-segment, the second extension sub-segment and the first extension sub-segment are separated from each other at a connection position between the second extension segment and the first extension segment, and the length of the second extension sub-segment is the same as that of the first extension sub-segment.

12. The relay according to claim 11, characterized in that: An extending direction of the second extending section and an extending direction of a tangent line of the first extending section at the connecting position form an angle, and the angle is greater than 0 degrees and less than or equal to 90 degrees.

13. The relay according to claim 10, characterized in that: The top surface of the housing is provided with a mounting groove, and at least a portion of the second extension section is placed in the mounting groove.

14. The relay according to claim 10, characterized in that: The signal lead-out sheet further includes a fourth extension section, which is bent relative to the second extension section and inserted into the housing.

15. The relay according to claim 14, characterized in that: The housing is provided with a groove; the fourth extension section is interference fit with the groove.

16. The relay according to claim 15, characterized in that The surface of the fourth extension section is provided with barbs; the fourth extension section is interference fit with the groove through the barbs.

17. The relay according to claim 10, characterized in that: The signal lead-out sheet is an integrally formed structure.

18. The relay according to claim 10, characterized in that The housing is provided with a retaining wall surrounding the exposed hole along the circumference of the static contact; the retaining wall is provided with a missing portion, and the second extension section is connected from the missing portion to the first extension section located in the retaining wall.

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

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