relay

Abstract

The application relates to a relay, which comprises a static contact arranged in the upper half of the relay, a load connection end exposed on the bottom surface of the relay, the load connection end being capable of being connected to a controlled circuit, and a lead-out piece electrically connected to the static contact and the load connection end; the relay can be connected to the controlled circuit with the load connection end facing downwards, so that the moving spring plate of the relay is away from the static contact under the action of gravity. Since the relay in the scheme is connected to the controlled circuit with the load connection end facing downwards, the moving spring plate installed in the relay is away from the static contact under the action of gravity, that is, a large enough safety distance between the moving spring plate and the static contact is ensured, so that when the relay is in a vibrating environment during transportation and use, the moving spring plate is prevented from shaking and accidentally contacting the static contact to cause the relay to be closed, and in turn, the safety hidden danger caused by the accidental closing of the loop of the battery pack and the electrification is avoided, and the safety and reliability of the battery pack are ensured.

Description

Technical Field

[0001] This application relates to the technical field of power switches, and in particular to a relay. Background Technology

[0002] A relay is an electronically controlled component that uses a magnetic field generated by an energized coil to drive internal moving components. These components then close or open moving and stationary contacts, thereby controlling external loads (such as circuits). For example, multiple relays are typically installed in the power battery packs of new energy vehicles to ensure the safe and reliable operation of the battery pack.

[0003] During actual transport and transportation, some power battery packs may experience unexpected relay closure, leading to the closure and energization of the power battery pack circuit, which poses a safety hazard. Utility Model Content

[0004] Therefore, it is necessary to provide a new type of relay to address the safety hazards and impacts normal use caused by the accidental closure of traditional relay technology.

[0005] This application discloses a relay comprising:

[0006] A stationary contact, which is arranged in the upper half of the relay;

[0007] A load connection terminal, exposed on the bottom surface of the relay, is capable of connecting to the controlled circuit; and

[0008] Lead-out component, the lead-out component being electrically connected to the stationary contact and the load connection terminal;

[0009] The relay can be connected to the controlled circuit with the load connection terminal facing downwards, so that the moving reed of the relay moves away from the stationary contact under the action of gravity.

[0010] In this relay design, the stationary contact is installed on the upper part of the relay and connected to one end of the lead-out component. The load connection terminal is then installed on the bottom surface of the relay and exposed thereon. The load connection terminal is then electrically connected to the lead-out component. This allows the stationary contact to be led out to the bottom surface of the relay, and then connected to an external controlled circuit via the load connection terminal, enabling the relay to control the on / off state of the controlled circuit. Compared to traditional technologies, this design uses a load connection terminal facing downwards when connected to the controlled circuit. This allows the moving spring inside the relay to move away from the stationary contact under its own weight, ensuring a sufficiently large safety distance between the moving spring and the stationary contact. This prevents the moving spring from vibrating and accidentally contacting the stationary contact during transport and use, thus preventing accidental closure of the battery pack circuit and avoiding potential safety hazards. This ensures the safety and reliability of the battery pack.

[0011] The technical solution of this application will be further described below:

[0012] In one embodiment, the relay further includes an insulating cover, the moving spring is disposed inside the insulating cover, the stationary contact is disposed on the insulating cover, and a portion of the stationary contact extends outside the insulating cover.

[0013] In one embodiment, the relay further includes a housing, a connector, and an electrical connector. The connector is disposed within the housing, and the electrical connector is integrally formed with the connector. The electrical connector has a lead-out end that is exposed outside the housing.

[0014] In one embodiment, four electrical connectors are provided, two of which are monitoring electrical connectors that are soldered to the lead-out member, and the other two are coil electrical connectors that are soldered to the solder feet of the coil.

[0015] During the welding process, the monitoring electrical connector and the lead-out component are welded first, and then the coil electrical connector and the coil are welded together.

[0016] In one embodiment, the movable spring, the lead-out end, the lead-out member, and the insulating cover are all mounted on the housing. The top surface of the housing has a first opening, and the bottom surface of the housing has a second opening. The lead-out end is exposed to the outer surface of the housing through the first opening, and the load connection end is exposed to the outer surface of the housing through the second opening.

[0017] In one embodiment, a cavity is formed inside the housing, and the stationary contact is completely housed inside the cavity.

[0018] In one embodiment, four leads are provided, which are respectively arranged at the four corners of the top surface of the housing. Two leads are used to electrically connect to the coil, and the remaining two leads are electrically connected to the stationary contact. The four leads can be electrically connected to external devices by surface welding.

[0019] In one embodiment, the relay further includes a drive assembly mounted in the housing and arranged on the side of the moving reed away from the stationary contact. The drive assembly is kinetically connected to the moving reed to drive the moving reed to contact or separate from the stationary contact.

[0020] In one embodiment, the housing has a shell wall, the interior of which is formed a receiving portion, and at least a portion of the lead-out member is disposed in the receiving portion.

[0021] In one embodiment, the housing includes a first half-shell and a second half-shell, the first half-shell and the second half-shell being arranged in a left-right split structure, and the first half-shell and the second half-shell being detachably connected.

[0022] The lead-out element is embedded in at least one of the first half-shell and the second half-shell.

[0023] In one embodiment, the lead-out member and the housing are integrally formed.

[0024] In one embodiment, the receiving portion is a receiving channel formed within the shell wall, and at least a portion of the lead-out member passes through the receiving channel.

[0025] In one embodiment, the housing further includes a cover plate, the receiving portion is a receiving groove formed on the housing wall, the opening of the receiving groove communicates with the housing cavity, at least a portion of the lead-out member is embedded in the receiving groove, and the cover plate is connected to the housing wall and seals the opening of the receiving groove.

[0026] In one embodiment, the housing further includes a cover plate, the receiving portion is a receiving groove formed on the housing wall, the opening of the receiving groove is disposed away from the housing cavity and communicates with the external environment of the housing, at least a portion of the lead-out member is embedded in the receiving groove, and the cover plate is connected to the housing wall and seals the opening of the receiving groove.

[0027] In one embodiment, the shell wall is provided with a first connecting portion, and the cover plate is provided with a second connecting portion, wherein the first connecting portion and the second connecting portion are detachably connected.

[0028] In one embodiment, the receiving part is configured as a receiving channel, and the shell wall is also provided with a communicating hole, the receiving channel communicating with the shell cavity of the shell through the communicating hole;

[0029] The lead-out component includes a main body and a first mounting portion connected to each other. The first mounting portion is the first end of the lead-out component. The main body passes through the receiving channel, and the first mounting portion passes through the communicating hole and partially extends into the housing cavity. The portion of the first mounting portion extending into the housing cavity is connected to the stationary contact.

[0030] In one embodiment, the lead-out member further includes a second mounting portion, which is a second end of the lead-out member and is connected to the end of the main body portion away from the first mounting portion;

[0031] The second opening communicates with the receiving channel, the second mounting portion extends to the second opening, the load connection end is installed at the second opening and electrically connected to the second mounting portion, and at least a portion of the load connection end extends outside the housing.

[0032] In one embodiment, the first mounting portion, the main body portion, and the second mounting portion are all in a straight line structure, so that the lead-out member is arranged in a U-shaped structure.

[0033] And / or, the lead-out element is made of copper. Attached Figure Description

[0034] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is an isometric structural diagram of a relay according to one embodiment.

[0037] Figure 2 for Figure 1 A side view structural diagram.

[0038] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure at point AA.

[0039] Figure 4This is a cross-sectional view of the relay from another perspective.

[0040] Figure 5 This is a schematic diagram of the internal structure of a relay.

[0041] Figure 6 This is a schematic diagram of the assembly structure of the lead-out member and the housing in one embodiment.

[0042] Figure 7 for Figure 6 A schematic diagram of the explosion structure.

[0043] Explanation of reference numerals in the attached figures:

[0044] 100. Relay; 10. Stationary contact; 20. Lead-out component; 21. Main body; 22. First mounting part; 23. Second mounting part; 30. Load connection terminal; 40. Insulating cover; 50. Housing; 51. First opening; 52. Second opening; 53. Housing wall; 531. Receiving part; 532. Communicating hole; 54. Housing cavity; 60. Drive assembly; 70. Moving spring; 80. Lead-out terminal; 80a. Electrical connector; 80b. Connecting base. Detailed Implementation

[0045] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0046] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0048] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0050] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0051] In the prior art, when the relay 100 is used in a battery pack, under certain circumstances, the stationary contact 10 of the relay 100 may be installed facing downwards. In this case, the moving spring 70 is arranged above the stationary contact 10, and under its own weight, the moving spring 70 will be relatively close to the stationary contact 10. When the power battery pack is subjected to environmental vibrations during transportation, vehicle installation, or other scenarios, the moving spring 70 is very prone to shaking and accidentally making contact with the stationary contact 10, causing the relay 100 to close and thus closing the circuit of the power battery pack to provide power, posing a safety hazard.

[0052] In addition, a large current will be generated at the moment the relay 100 closes, which may also cause the stationary contact 10 to stick to the moving spring 70, causing the relay 100 to fail to work properly and resulting in the power battery pack being in a closed circuit and energized state for a long time.

[0053] For the above issues, please refer to Figure 1 This application proposes a relay 100, which can be a high-voltage DC relay; of course, in other optional embodiments, the relay 100 can also be a high-voltage AC relay, etc., and can be flexibly selected according to actual needs.

[0054] Please continue reading. Figures 2 to 5 For example, in this application, the relay 100 includes a stationary contact 10, a load connection terminal 30, and a lead-out member 20. For instance, in this embodiment, the relay 100 has a cuboid shape, and in the installed state, the length direction of the relay 100 is located in the vertical direction. Therefore, the side of the relay 100 facing upward can be considered as the top surface, and the side facing downward can be considered as the bottom surface. The top surface and the bottom surface are also connected by four sides facing different spatial orientations.

[0055] Please continue reading. Figure 2 The stationary contact 10 is arranged in the upper half of the relay 100. Understandably, the stationary contact 10 is located at least in the upper half of the relay 100, and depending on actual needs, the stationary contact 10 can be completely installed inside the housing 50 of the relay 100, or it can be at least partially exposed on the top surface of the housing 50.

[0056] Furthermore, the relay 100 also includes a housing 50, a connecting base 80b, and an electrical connector 80a. The connecting base 80b is disposed within the housing 50, and the electrical connector 80a is integrally formed with the connecting base 80b. The electrical connector 80a has a lead-out end 80, which protrudes from the housing 50. This arrangement not only allows the electrical connector 80a to be positioned and fixed within the housing 50 via the connecting base 80b, but also effectively solves the electrical clearance problem. In addition, the integrated structure reduces the number of parts and makes it easier to install the electrical connector 80a and the connecting base 80b into the housing 50. The lead-out end protruding from the housing 50 facilitates electrical connection with external devices.

[0057] In one optional embodiment, a cavity 54 is formed inside the housing 50, and the stationary contact 10 is completely housed inside the cavity 54. That is, the stationary contact 10 is not exposed on the surface of the housing 50, thereby preventing the stationary contact 10 from being exposed to the external environment. The housing 50 can provide better protection for the stationary contact 10 and ensure the safety of the stationary contact 10.

[0058] The load connection terminal 30 is exposed on the bottom surface of the relay 100 and can be connected to the controlled circuit; the lead-out member 20 is electrically connected to the stationary contact 10 and the load connection terminal 30. For example, the connection method between the lead-out member 20 and the stationary contact 10 and the load connection terminal 30 can be, but is not limited to, welding, bonding, screwing, snap-fitting, etc.

[0059] Please continue reading. Figure 3 The relay 100 can be connected to the controlled circuit with the load connection terminal 30 facing downwards, so that the moving spring 70 of the relay 100 moves away from the stationary contact 10 under the action of gravity.

[0060] Please continue reading. Figure 4 , Figure 5 and Figure 7 The lead-out member 20 is built into the housing 50 along the vertical direction of the relay 100. In order to adapt to the installation method of the lead-out member 20 and to better integrate the lead-out member 20 into the housing 50, in one embodiment the housing 50 includes a first half-shell and a second half-shell. The first half-shell and the second half-shell are arranged in a left-right split structure and are detachably connected. For example, the lead-out member 20 can be built into at least one of the first half-shell and the second half-shell.

[0061] Optionally, the installation method of the first half shell and the second half shell can be, but is not limited to, at least one of the following: snap-fit ​​connection, threaded connection, adhesive bonding, etc., and can be flexibly selected according to actual needs.

[0062] In summary, implementing the technical solution of this embodiment will achieve the following beneficial effects: In the relay 100 of this solution, the stationary contact 10 is installed in the upper half of the relay 100 and is connected to one end of the lead-out member 20. Then, the load connection terminal 30 is installed on the bottom surface of the relay 100 and exposed on the bottom surface of the relay 100. Then, the load connection terminal 30 is electrically connected to the lead-out member 20. In this way, the stationary contact 10 can be led out to the bottom surface of the relay 100, and then connected to the external controlled circuit through the load connection terminal 30 to realize the on / off control of the controlled circuit by the relay 100.

[0063] Compared to traditional technologies, the relay 100 in this solution is connected to the controlled circuit with the load connection terminal 30 facing downwards. This allows the moving spring 70 installed inside the relay 100 to move away from the stationary contact 10 under its own weight. This ensures a sufficiently large safety distance between the moving spring 70 and the stationary contact 10. When the relay 100 is in a vibrating environment during transportation and use, it prevents the moving spring 70 from shaking and accidentally contacting the stationary contact 10, causing the relay 100 to close. This avoids accidental closure of the battery pack circuit and the resulting safety hazards, ensuring the safety and reliability of the battery pack.

[0064] Please continue reading. Figure 4 In one embodiment, the relay 100 further includes an insulating cover 40, a movable spring 70 is installed inside the insulating cover 40, and a stationary contact 10 is installed on the insulating cover 40, with a portion of the stationary contact 10 extending outside the insulating cover 40. That is, when located inside the insulating cover 40, the movable spring 70 and the portion of the stationary contact 10 extending into the insulating cover 40 are vertically spaced relative to each other, with the movable spring 70 located below the stationary contact 10. This allows the movable spring 70 to have a tendency to move away from the stationary contact 10 under its own weight, creating a sufficient safety distance between the movable spring 70 and the stationary contact 10. This effectively prevents the movable spring 70 from making accidental contact with the stationary contact 10 under the influence of vibration or other factors, thus avoiding accidental closing of the relay 100 and potential safety hazards to the battery pack.

[0065] In addition, the part of the moving spring 70 that contacts the stationary contact 10 is placed inside the insulating cover 40. The insulating cover 40 can isolate the moving spring 70 and the stationary contact 10 that are energized during operation from the environment of the housing 54, ensuring safety when the moving spring 70 contacts or disconnects from the stationary contact 10, and achieving a good insulation and protection effect.

[0066] For example, the insulating cover 40 can be made of materials such as ceramics and silicone rubber.

[0067] Based on any of the above embodiments, four electrical connectors 80a are provided, two of which are monitoring electrical connectors, which are soldered to the lead-out member 20, and the other two are coil electrical connectors, which are used to be soldered to the solder feet of the coil.

[0068] During the welding process, the monitoring electrical connector and lead-out component 20 are welded first, and then the coil electrical connector and coil are welded.

[0069] Since the monitoring electrical connector, coil electrical connector, and connector 80b are integrated, welding the monitoring electrical connector and lead-out piece 20 first, followed by welding the coil electrical connector and coil leads, ensures that the leads of the coil electrical connector and coil will not be damaged. However, if the leads of the coil electrical connector and coil are welded first, followed by the monitoring electrical connector and lead-out piece 20, the small welding area and limited force of the leads of the coil electrical connector and coil may cause slight movement (or a tendency to move) in the connector 80b due to the stress generated during welding between the monitoring electrical connector and lead-out piece 20. This could damage the weld points of the coil electrical connector and coil leads, leading to poor contact.

[0070] Please continue reading. Figures 1 to 4 In another embodiment, the movable spring 70, the lead-out end 80, the lead-out member 20 and the insulating cover 40 are all installed on the housing 50. The top surface of the housing 50 has a first opening 51 and the bottom surface of the housing 50 has a second opening 52. The lead-out end 80 is exposed on the outer surface of the housing 50 through the first opening 51, and the load connection end 30 is exposed on the outer surface of the housing 50 through the second opening 52.

[0071] The housing 50 is the main component of the relay 100, serving to directly or indirectly mount and fix the stationary contact 10, the moving spring 70, the lead-out terminal 80, the lead-out member 20, and the insulating cover 40. By opening a first opening 51 on the top surface of the housing 50 (i.e., the top surface of the relay 100), the lead-out terminal 80 can be exposed on the outer surface of the housing 50 through the first opening 51, so as to facilitate the electrical connection of the lead-out terminal 80 with external equipment (such as external power supply, detection equipment, etc.).

[0072] Similarly, by opening a second opening 52 on the bottom surface of the housing 50, the load connection end 30 can be exposed on the outer surface of the housing 50 through the second opening 52, thereby facilitating the electrical connection of the load connection end 30 with the external controlled circuit.

[0073] The lead-out end 80 and the load connection end 30 can be any shape such as circle, square, triangle, etc. Correspondingly, the first opening 51 and the second opening 52 can also be one of circle, square, triangle, etc.

[0074] The lead-out end 80 and the wall of the first opening 51, as well as the load connection end 30 and the wall of the second opening 52, are in a tight fit or are sealed by a sealing component to prevent dust, rainwater, or other external environmental elements from entering the relay 100 and endangering its safety.

[0075] Furthermore, in an optional embodiment, four leads 80 are provided, and the four leads 80 are respectively arranged at the four apex corners of the top surface of the housing 50. Two leads 80 are used to electrically connect to the coil, and the remaining two leads 80 are electrically connected to the stationary contact 10. The four leads 80 can be electrically connected to external devices by surface welding.

[0076] It should be noted that the aforementioned surface welding specifically refers to the ability of the outgoing end 80 to be welded to the connection part of the external device in a surface-to-surface manner to achieve electrical connection, and to increase the welding area to obtain higher connection strength and reliability.

[0077] Specifically, the lead-out terminal 80 can be of various types, such as a coil lead-out terminal or a detection lead-out terminal. When the lead-out terminal 80 is a coil lead-out terminal, it is used to supply power to the coil installed inside the housing 50; when the lead-out terminal 80 is a detection lead-out terminal, it is used to detect the closing status of the relay 100. The lead-out terminal 80 is electrically connected to external devices via surface soldering, which is convenient and highly reliable.

[0078] It should be noted that at least one of the top, bottom and side surfaces of the housing 50 is provided with a load connection end 30, and there may be more than one load connection end 30 installed on the top, bottom and side surfaces, which can be flexibly selected according to actual needs.

[0079] Please continue reading. Figures 3 to 5 Furthermore, in another embodiment, the relay 100 further includes a drive assembly 60, which is mounted on the housing 50 and arranged on the side of the movable spring 70 away from the stationary contact 10. The drive assembly 60 is kinetically connected to the movable spring 70 to drive the movable spring 70 to contact or separate from the stationary contact 10. During operation, the drive assembly 60 outputs a reciprocating linear driving force to the movable spring 70 to move it closer to and contact the stationary contact 10, thereby closing the relay 100; or, the drive assembly 60 moves the movable spring 70 away from the stationary contact 10, thereby opening the relay 100. The on / off control of the controlled circuit is achieved by closing or opening the relay 100. The relay 100 has a simple operating mode and principle, and high reliability.

[0080] For example, the drive assembly 60 may include an electromagnetic unit and a push rod unit. The electromagnetic unit is electrically connected to an external power source through a lead-out terminal 80. When the electromagnetic unit is energized, it generates a magnetic field. Under the action of the magnetic field, the push rod unit reciprocates to drive the movable spring 70 connected to it to contact or separate from the stationary contact 10.

[0081] In related technologies, the lead-out component 20 is usually directly installed in the cavity 54 of the housing 50. Although this installation method is convenient and simple, the lead-out component 20 inevitably occupies part of the space in the cavity 54, which increases the difficulty of internal arrangement of the relay 100 and makes it difficult to miniaturize the relay 100. At the same time, the lead-out component 20 can also easily introduce problems such as electrical clearance or creepage distance. Furthermore, since the lead-out component 20 is suspended in the cavity 54, its stability is poor. During transportation and use, the lead-out component 20 is prone to vibration due to environmental vibration, which in turn affects the reliability of the relay 100.

[0082] Please continue reading. Figure 4 To address the aforementioned issues, in an optional embodiment of this application, the housing 50 has a housing wall 53, and a receiving portion 531 is formed inside the housing wall 53, with at least a portion of the lead-out member 20 installed in the receiving portion 531. Therefore, by embedding at least a portion of the lead-out member 20 within the receiving portion 531 of the housing wall 53, the space occupied by the lead-out member 20 in the housing cavity 54 can be reduced or avoided. Simultaneously, the housing wall 53 provides support and positioning for the lead-out member 20, improving the stability of the lead-out member 20 installation. Furthermore, the housing wall 53 encloses the lead-out member 20, thus providing isolation and protection.

[0083] Furthermore, the lead-out member 20 and the housing 50 are integrally formed. The integrally formed lead-out member 20 and the housing 50 have good connection strength, excellent overall structural performance, and the integral forming process is simple, which helps to improve production efficiency.

[0084] For example, the housing 50 is made of plastic, and the metal lead-out part 20 can be integrally injection molded with the housing 50 through an injection mold.

[0085] In one embodiment, the receiving portion 531 is a receiving channel formed within the shell wall 53, and at least a portion of the lead-out member 20 passes through the receiving channel. The receiving channel can be formed by machining, chemical etching, or other methods, so forming the receiving channel inside the shell wall 53 is simple, and the lead-out member 20 can then be directly inserted into the receiving channel, making the installation method simple.

[0086] It should be noted that the lead-out component 20 and the side wall of the receiving channel can be either a clearance fit or a tight fit. Preferably, the lead-out component 20 is installed tightly against the side wall of the receiving channel, and the side wall provides a positioning effect for the lead-out component 20, ensuring that the lead-out component 20 is installed firmly and reliably.

[0087] Alternatively, as an alternative to the above embodiment, the housing 50 further includes a cover plate, and the receiving portion 531 is a receiving groove formed on the housing wall 53. The opening of the receiving groove communicates with the housing cavity 54 of the housing 50, and at least a portion of the lead-out member 20 is embedded in the receiving groove. The cover plate is connected to the housing wall 53 and seals the opening of the receiving groove. When installing the lead-out member 20, it can be directly pressed into the cavity of the receiving groove through the opening of the receiving groove. The installation is simple, convenient, and efficient. Then, the cover plate is fixed to the housing wall 53, and the opening of the receiving groove is sealed by the cover plate to achieve encapsulation and isolation of the lead-out member 20, so as to avoid interference between the lead-out member 20 and other functional components in the housing cavity 54.

[0088] Alternatively, as an alternative to the above embodiments, the housing 50 further includes a cover plate, and the receiving portion 531 is a receiving groove formed on the housing wall 53. The opening of the receiving groove is positioned away from the housing cavity 54 of the housing 50 and communicates with the external environment of the housing 50. At least a portion of the lead-out member 20 is embedded in the receiving groove. The cover plate is connected to the housing wall 53 and seals the opening of the receiving groove. The difference from the above embodiments is that the opening of the receiving groove is formed on the outer wall surface of the housing wall 53 of the housing 50, so that the lead-out member 20 is not affected by other functional components that need to be installed in the housing cavity 54 when it is installed (in the above embodiments, it may be necessary to install the lead-out member 20 first and then install other functional components to avoid the housing cavity 54 being occupied by functional components after other functional components are installed first, leaving insufficient operating space for installing the lead-out member 20). It can be conveniently and quickly installed into the receiving groove, and then sealed and protected by the cover plate. On the one hand, this ensures that the relay 100 has a simple and beautiful appearance, and on the other hand, it can prevent the live lead-out member 20 from causing damage to equipment or personnel outside the relay 100.

[0089] Based on the above embodiment, the shell wall 53 is provided with a first connecting part, and the cover plate is provided with a second connecting part, and the first connecting part and the second connecting part are detachably connected. Therefore, by detachably connecting the first connecting part and the second connecting part, the cover plate and the shell 50 can be detachably assembled, which facilitates the installation or removal of the lead-out part 20.

[0090] For example, the first connecting part and the second connecting part can be any of the following connection structures, including but not limited to snap-fit ​​connection, magnetic connection, adhesive connection, etc., and can be flexibly selected according to actual needs.

[0091] Please continue reading. Figure 4 , Figure 6 and Figure 7In one embodiment, the receiving part 531 is configured as a receiving channel, and the shell wall 53 is also provided with a connecting hole 532. The receiving channel is connected to the shell cavity 54 of the shell 50 through the connecting hole 532. The lead-out part 20 includes a main body part 21 and a first mounting part 22 connected to each other. The first mounting part 22 is the first end of the lead-out part 20. The main body part 21 passes through the receiving channel, and the first mounting part 22 passes through the connecting hole 532 and partially extends into the shell cavity 54. The part of the first mounting part 22 extending into the shell cavity 54 is connected to the stationary contact 10.

[0092] The main body 21 passes through the receiving channel to enable the lead-out member 20 to be assembled and fixed with the housing wall 53; the first mounting part 22 extends into the housing cavity 54 through the connecting hole 532 and can be electrically connected to the stationary contact 10, thereby enabling the stationary contact 10 to be led out to other surfaces of the housing 50 through the lead-out member 20, so that the relay 100 can meet different installation needs and improve installation flexibility.

[0093] For example, the first mounting part 22 has a mounting through hole, through which a portion of the stationary contact 10 passes to achieve assembly and fixation. Furthermore, the end face of the portion of the stationary contact 10 passing through the mounting through hole has a threaded hole. A screw is screwed into the threaded hole, and the threaded head of the screw can press the first mounting part 22 tightly against the stationary contact 10 to improve the connection strength and reliability between the first mounting part 22 and the stationary contact 10.

[0094] For example, one of the first mounting part 22 and the stationary contact 10 is provided with a locking body, and the other of the first mounting part 22 and the stationary contact 10 is provided with a fastening position. The first mounting part 22 and the stationary contact 10 are locked together by the locking body and the fastening position, thereby improving the stability of their installation.

[0095] Please continue reading. Figure 4 Furthermore, based on the above embodiments, the lead-out member 20 also includes a second mounting portion 23, which is the second end of the lead-out member 20 and is connected to the end of the main body 21 away from the first mounting portion 22.

[0096] The second opening 52 is connected to the receiving channel, the second mounting part 23 extends to the second opening 52, the load connection end 30 is installed at the second opening 52 and electrically connected to the second mounting part 23, and at least a portion of the load connection end 30 extends out of the housing 50.

[0097] With this configuration, the load connection terminal 30 can be electrically connected to the lead-out member 20 by connecting to the second mounting part 23, and ultimately electrically connected to the stationary contact 10 through the lead-out member 20, so that the stationary contact 10 is led out through the lead-out member 20 to the mounting surface of the housing 50 where the load connection terminal 30 is located. In use, the load connection terminal 30 is used to electrically connect to an external controlled circuit to realize the on / off control of the external controlled circuit by the relay 100.

[0098] Furthermore, at least a portion of the load connection terminal 30 extends outside the housing 50 through the second opening 52. This exposes at least a portion of the load connection terminal 30 outside the housing 50, ensuring that the exposed portion is unobstructed and thus facilitating electrical connection to an external load, thereby improving the ease of use of the relay 100.

[0099] Furthermore, when a portion of the load connection end 30 is exposed outside the housing 50, the remaining portion of the load connection end 30 is engaged within the second opening 52, thereby improving the stability of the load connection end 30 installation.

[0100] For example, in this application, the first mounting part 22, the main body part 21, and the second mounting part 23 are all in a straight line shape, which makes the lead-out part 20 have a U-shaped structure. In this way, the structure of the lead-out part 20 is simple, easy to manufacture, and convenient to install and use.

[0101] Lead-out element 20 is made of copper. Copper lead-out element 20 has excellent electrical conductivity, which helps to improve the working performance and response speed of relay 100.

[0102] However, it should be noted that in other optional embodiments, the lead-out part 20 can also be configured with other structures and made of other materials. The specific choice can be made flexibly according to actual needs, and will not be elaborated here.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A relay (100), characterized in that, include: A stationary contact (10) is arranged in the upper half of the relay (100); A load connection terminal (30) is exposed on the bottom surface of the relay (100), and the load connection terminal (30) can be connected to the controlled circuit; and Lead-out member (20) is electrically connected to the stationary contact (10) and the load connection terminal (30). The relay (100) can be connected to the controlled circuit with the load connection terminal (30) facing downwards, so that the moving spring (70) of the relay (100) moves away from the stationary contact (10) under the action of gravity.

2. The relay (100) according to claim 1, characterized in that, The relay (100) also includes an insulating cover (40), the moving spring (70) is installed inside the insulating cover (40), the stationary contact (10) is installed on the insulating cover (40), and a portion of the stationary contact (10) extends outside the insulating cover (40).

3. The relay (100) according to claim 1, characterized in that, The relay (100) also includes a housing (50), a connecting base (80b), and an electrical connector (80a). The connecting base (80b) is disposed inside the housing (50), and the electrical connector (80a) is integrally formed with the connecting base (80b). The electrical connector (80a) has a lead-out end (80) that is exposed outside the housing (50).

4. The relay (100) according to claim 3, characterized in that, Four electrical connectors (80a) are provided, two of which are monitoring electrical connectors and are soldered to the lead-out piece (20), and the other two are coil electrical connectors and are used to be soldered to the solder feet of the coil. During the welding process, the monitoring electrical connector and the lead-out component (20) are welded first, and then the coil electrical connector and the coil are welded.

5. The relay (100) according to claim 3 or 4, characterized in that, The top surface of the housing (50) has a first opening (51), the bottom surface of the housing (50) has a second opening (52), the lead-out end (80) is exposed on the outer surface of the housing (50) through the first opening (51), and the load connection end (30) is exposed on the outer surface of the housing (50) through the second opening (52).

6. The relay (100) according to claim 5, characterized in that, The housing (50) has a cavity (54) inside, and the stationary contact (10) is completely housed inside the cavity (54).

7. The relay (100) according to claim 5, characterized in that, The lead-out terminals (80) are provided in four places. The four lead-out terminals (80) are respectively arranged at the four corners of the top surface of the housing (50). Two of the lead-out terminals (80) are used to electrically connect the coil, and the remaining two lead-out terminals (80) are electrically connected to the stationary contact (10). The four lead-out terminals (80) can be electrically connected to external devices by surface welding.

8. The relay (100) according to claim 5, characterized in that, The relay (100) further includes a drive assembly (60), which is mounted on the housing (50). The drive assembly (60) is arranged on the side of the moving spring (70) away from the stationary contact (10). The drive assembly (60) is throttle connected to the moving spring (70) to drive the moving spring (70) to contact or separate from the stationary contact (10).

9. The relay (100) according to claim 5, characterized in that, The housing (50) has a shell wall (53) with a receiving portion (531) formed inside the shell wall (53), and at least part of the lead-out member (20) is installed in the receiving portion (531).

10. The relay (100) according to claim 9, characterized in that, The lead-out member (20) and the housing (50) are integrally formed.

11. The relay (100) according to claim 10, characterized in that, The housing (50) includes a first half-shell and a second half-shell, the first half-shell and the second half-shell are arranged in a left-right split structure, and the first half-shell and the second half-shell are detachably connected. The lead-out element (20) is embedded in at least one of the first half-shell and the second half-shell.

12. The relay (100) according to claim 9, characterized in that, The receiving section (531) is a receiving channel opened in the shell wall (53), and at least part of the lead-out member (20) passes through the receiving channel.

13. The relay (100) according to claim 9, characterized in that, The housing (50) also includes a cover plate, the receiving part (531) is a receiving groove opened on the housing wall (53), the opening of the receiving groove is connected to the housing cavity (54) of the housing (50), at least part of the lead-out member (20) is embedded in the receiving groove, the cover plate is connected to the housing wall (53) and seals the opening of the receiving groove.

14. The relay (100) according to claim 9, characterized in that, The housing (50) also includes a cover plate, the receiving part (531) is a receiving groove opened on the housing wall (53), the opening of the receiving groove is disposed away from the housing cavity (54) of the housing (50) and communicates with the external environment of the housing (50), at least part of the lead-out member (20) is embedded in the receiving groove, the cover plate is connected to the housing wall (53) and seals the opening of the receiving groove.

15. The relay (100) according to claim 13 or 14, characterized in that, The shell wall (53) is provided with a first connecting part, and the cover plate is provided with a second connecting part. The first connecting part and the second connecting part are detachably connected.

16. The relay (100) according to claim 12, characterized in that, The shell wall (53) is also provided with a connecting hole (532), and the receiving channel is connected to the shell cavity (54) of the shell (50) through the connecting hole (532); The lead-out member (20) includes a main body (21) and a first mounting part (22) connected to each other. The main body (21) passes through the receiving channel, and the first mounting part (22) passes through the connecting hole (532) and partially extends into the housing cavity (54). The portion of the first mounting part (22) extending into the housing cavity (54) is connected to the stationary contact (10).

17. The relay (100) according to claim 16, characterized in that, The lead-out member (20) also includes a second mounting part (23), which is connected to the end of the main body (21) away from the first mounting part (22); The second opening (52) communicates with the receiving channel, the second mounting part (23) extends to the second opening (52), the load connection end (30) is installed at the second opening (52) and electrically connected to the second mounting part (23), and at least a portion of the load connection end (30) extends out of the housing (50).

18. The relay (100) according to claim 17, characterized in that, The first mounting part (22), the main body part (21) and the second mounting part (23) are all in a straight line structure, so that the lead-out part (20) is arranged in a U-shaped structure; And / or, the lead-out element (20) is made of copper.

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