Coil assembly and contactor

Abstract

The utility model provides a coil assembly and a contactor, and relates to the technical field of electronic power, the coil assembly comprises a coil, a coil framework and a base, the coil is wound on the coil framework, an inner cavity is formed in the base, and the coil framework is installed in the inner cavity so as to ensure that the coil framework can have a reliable fixing point; therefore, the installation stability of the coil and the reliability of electrical connection are ensured. Moreover, through the cooperation of the first clamping part and the second clamping part, the first shell can be stably fixed on the base and covers the periphery of the opening of the inner cavity, so that the assembly automation is realized. The coil assembly is fixedly connected with two coil terminals, and the two ends of the coil are electrically connected with the two coil terminals respectively, so that reliable electric connection between the coil and an external power source is achieved. In addition, the first clamping part is located between the two coil terminals, so that the base can be connected with the first shell, and meanwhile, the coil can be connected with a lower inlet wire of an external power supply through the coil terminals.

Description

Technical Field

[0001] The present application relates to the field of electronic power technology, and more particularly, to a coil assembly and a contactor. Background Art

[0002] A contactor is an electrical device frequently used in the field of industrial electrical control. Its main function is to connect and disconnect a DC main circuit and a large-capacity control circuit remotely and frequently. Contactors are mainly used for the control of electric motors, and can also be used to control various electrical loads such as electric heating equipment, electric lighting, electric welders, and capacitor banks. Among them, the coil assembly is a key actuating element of the contactor. In the application of the contactor, it is composed of a base, a coil skeleton, a first housing, and a coil, and is connected to a coil terminal for connecting an external power supply to ensure the reliability of the coil connection.

[0003] In the prior art, the base and the first housing are usually connected by screws, and the assembly process is complex and cumbersome, with low efficiency. Moreover, the connection between the coil and the external power supply usually adopts a split-type structure interface to achieve wiring connection, that is, a plug-and-socket connection is made through a male-female docking plug structure, which easily increases the number of fault points at the connection, affecting the performance and reliability of the contactor. Summary of the Utility Model

[0004] The purpose of the present application is to provide a coil assembly and a contactor for the deficiencies in the above-mentioned prior art.

[0005] To achieve the above purpose, the technical solutions adopted in the embodiments of the present application are as follows:

[0006] On the one hand, an embodiment of the present application provides a coil assembly, including a coil, a coil skeleton, a base, and a first housing. The coil is wound around the coil skeleton, and an inner cavity is formed in the base, and the coil skeleton is located in the inner cavity;

[0007] The inner cavity has an opening, the base is provided with a first clamping portion, the first housing is provided with a second clamping portion, and the first housing is clamped to the second clamping portion to cover the periphery of the opening;

[0008] Two coil terminals are fixedly connected to the coil assembly, and both ends of the coil are electrically connected to the two coil terminals respectively, and the first clamping portion is located between the two coil terminals.

[0009] Optionally, the base and the coil skeleton are respectively used to fix both ends of the coil terminal.

[0010] Optionally, the coil skeleton has an extended first extension portion, and the first extension portion has at least one first groove for clamping one end of the coil terminal.

[0011] Optionally, the base has a second extension extending beyond the side wall of the inner cavity. The second extension has at least one second groove for clamping one end of the coil terminal facing away from the first groove.

[0012] Optionally, both the first extension and the second extension extend in the second direction, and there is a height difference between the first extension and the second extension in a third direction perpendicular to the second direction.

[0013] Optionally, the coil assembly further includes a protective cover. The second extension is provided with a third clamping portion, and the protective cover is provided with a fourth clamping portion. The protective cover is clamped to the fourth clamping portion and covers the second extension, and one end of the coil terminal facing away from the first groove is located in the covering space formed between the protective cover and the second extension.

[0014] Optionally, the coil assembly further includes a second housing covering the side of the first housing facing away from the base. One side of the protective cover facing away from the fourth clamping portion is provided with a fifth clamping portion, and the second housing is provided with a sixth clamping portion. The fifth clamping portion is clamped to the sixth clamping portion.

[0015] Optionally, the protective cover and the second extension clamp one end of the coil terminal facing away from the first groove.

[0016] Optionally, one end of the coil terminal close to the coil bobbin is located at the docking surface of the base and the first housing.

[0017] In another aspect of the embodiments of the present application, a contactor is provided, including a coil terminal and the coil assembly of any one of the above. Both ends of the coil terminal are respectively fixed to the coil bobbin and the base of the coil assembly.

[0018] The beneficial effects of the present application include:

[0019] The present application provides a coil assembly, comprising a coil, a coil bobbin, a base and a first housing. The coil is wound around the coil bobbin. An inner cavity is formed in the base, and the coil bobbin is located in the inner cavity. The inner cavity has an opening. The base is provided with a first clamping portion, and the first housing is provided with a second clamping portion. The first housing is clamped to the second clamping portion and covers the periphery of the opening. The coil assembly is fixedly connected with two coil terminals, and two ends of the coil are respectively electrically connected to the two coil terminals. The first clamping portion is located between the two coil terminals. In the present application, by winding the coil around the coil bobbin, it is ensured that the coil can be stably supported during operation. An inner cavity is formed in the base, and the coil bobbin is installed in the inner cavity to ensure that the coil bobbin can have a reliable fixing point, thereby ensuring the installation stability of the coil and the reliability of the electrical connection. Moreover, through the cooperation of the first clamping portion and the second clamping portion, the first housing can be firmly fixed on the base and at the same time cover the periphery of the opening of the inner cavity, realizing automatic assembly, simplifying the assembly process of the first housing and the base, and improving the reliability and efficiency of the assembly. The coil assembly is fixedly connected with two coil terminals, and two ends of the coil are respectively electrically connected to the two coil terminals to realize a reliable electrical connection between the coil and an external power supply. In addition, the first clamping portion is located between the two coil terminals. This design can not only realize the connection between the base and the first housing, but also realize the lower incoming line connection between the coil and the external power supply through the coil terminals, enabling reliable mechanical connections between the components of the contactor and reliable electrical connections with the external power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 FIG. 9 is one of the schematic structural diagrams of the connection between a coil assembly and coil terminals provided by an embodiment of the present application;

[0022] Figure 2 FIG. 13 is another schematic structural diagram of the connection between a coil assembly and coil terminals provided by an embodiment of the present application;

[0023] Figure 3 FIG. 17 is a schematic structural diagram of a coil bobbin of a coil assembly provided by an embodiment of the present application;

[0024] Figure 4 FIG. 21 is a schematic structural diagram of a base of a coil assembly provided by an embodiment of the present application;

[0025] Figure 5One of the schematic structural diagrams of a coil terminal provided by an embodiment of the present application;

[0026] Figure 6 Another schematic structural diagram of a coil terminal provided by an embodiment of the present application;

[0027] Figure 7 Another schematic structural diagram of a coil terminal provided by an embodiment of the present application;

[0028] Figure 8 Another schematic structural diagram of a coil terminal provided by an embodiment of the present application;

[0029] Figure 9 Another schematic structural diagram of a coil terminal provided by an embodiment of the present application;

[0030] Figure 10 Schematic structural diagram of a protective cover of a coil assembly provided by an embodiment of the present application;

[0031] Figure 11 Schematic structural diagram of a second housing of a coil assembly provided by an embodiment of the present application;

[0032] Figure 12 Schematic structural diagram of a coil assembly provided by an embodiment of the present application.

[0033] Reference numerals: 10 - coil terminal; 11 - assembly part; 111 - first protrusion; 1111 - first barb structure; 112 - winding protrusion; 1121 - first winding segment; 1122 - second winding segment; 1123 - boss; 12 - wiring part; 121 - second protrusion; 1211 - second barb structure; 122 - wiring terminal; 122a - first through hole; 1221 - third extension part; 13 - connecting part; 20 - coil assembly; 21 - coil; 22 - coil skeleton; 221 - first extension part; 2211 - first groove; 23 - base; 23a - inner cavity; 231 - second extension part; 231a - accommodating cavity; 2311 - second groove; 2312 - third engaging part; 232 - first engaging part; 24 - protective cover; 241 - fourth engaging part; 242 - fifth engaging part; 25 - first housing; 251 - second engaging part; 26 - second housing; 261 - sixth engaging part; x - first direction; y - second direction; z - third direction. Detailed implementation manners

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. Components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of this application that is claimed, but merely represents selected embodiments of this application. It should be noted that, without conflict, the various features in the embodiments of this application can be combined with each other, and the combined embodiments are still within the scope of protection of this application.

[0036] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] In the description of this application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship when the product of this application is normally placed. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0038] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0039] In the description of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] A contactor is an electrical appliance used for remotely and frequently connecting and disconnecting AC and DC main circuits and large-capacity control circuits, and is mainly applied to power loads such as motor control, electrothermal equipment, electric lighting, electric welding machines, and capacitor banks. Its key components are the coil assembly and the coil terminal. The coil assembly is connected to an external power supply through the coil terminal to ensure the stable operation and control effect of the circuit. However, the wire base and the first housing are usually connected by screws, and the assembly process is complex and cumbersome, with low efficiency. Moreover, a split structure interface is usually adopted between the coil and the external power supply to achieve wiring connection, that is, a plug-and-socket connection is made through a male-female docking plug structure, which easily increases the number of fault points at the connection, affecting the performance and reliability of the contactor.

[0041] To solve the above problems, on the one hand, an embodiment of the present application provides a coil assembly 20, as Figures 1 to 4 shown, which includes a coil 21, a coil bobbin 22, a base 23, and a first housing 25. The coil 21 is wound around the coil bobbin 22. An inner cavity 23a is formed in the base 23, and the coil bobbin 22 is located in the inner cavity 23a;

[0042] The inner cavity 23a has an opening. The base 23 is provided with a first clamping portion 232, and the first housing 25 is provided with a second clamping portion 251. The first housing 25 is clamped to the second clamping portion 251 through the first clamping portion 232 and covers the periphery of the opening;

[0043] Two coil terminals 10 are fixedly connected to the coil assembly 20. Both ends of the coil 21 are electrically connected to the two coil terminals 10 respectively, and the first clamping portion 232 is located between the two coil terminals 10.

[0044] The coil 21, as the main electromagnetic actuator, is supported by the coil bobbin 22. By winding the coil 21 around the coil bobbin 22, it is ensured that the coil 21 can be stably supported during operation, avoiding unnecessary movement or loosening of the coil 21 during operation. The base 23, as the support structure of the entire coil assembly 20, is not only the fixed point of the coil bobbin 22, but also provides necessary support and environmental protection to prevent the coil 21 from being interfered with and damaged by the external environment. An inner cavity 23a is formed in the base 23, and the coil bobbin 22 is installed in the inner cavity 23a to ensure that the coil bobbin 22 can have a reliable fixed point, thereby ensuring the installation stability of the coil 21 and the reliability of the electrical connection.

[0045] Moreover, through the cooperation of the first latching portion 232 and the second latching portion 251, the first housing 25 can be stably fixed on the base 23 while covering the opening periphery of the inner cavity 23a. This latching method ensures a firm connection between the first housing 25 and the base 23, forming a closed space to protect the coil bobbin 22 and the coil 21 in the inner cavity 23a from the external environment, realizes assembly automation, simplifies the assembly process of the first housing 25 and the base 23, and also improves the reliability and efficiency of the assembly.

[0046] Two coil terminals 10 are fixedly connected to the coil assembly 20, and the two ends of the coil 21 are respectively electrically connected to the two coil terminals 10 to achieve a reliable electrical connection between the coil 21 and an external power supply. In addition, the first latching portion 232 is located between the two coil terminals 10. This design can not only realize the connection between the base 23 and the first housing 25, but also realize the lower incoming line connection of the coil 21 to the external power supply through the coil terminals 10, enabling a reliable mechanical connection between the components of the contactor and a reliable electrical connection with the external power supply.

[0047] Optionally, the base 23 and the coil bobbin 22 are respectively used to fix the two ends of the coil terminal 10. The coil terminal 10 plays a crucial role in the contactor. As a bridge connecting the coil 21 and the external power supply, it ensures the normal operation of the electrical system. As Figure 5 shown, the coil terminal 10 includes an integrally formed assembly portion 11 and a wiring portion 12. Through the integrally formed design, the tight connection between the assembly portion 11 and the wiring portion 12 is ensured, and the connection between the coil assembly 20 and the external power supply is simplified. This not only reduces the operation steps and time in the assembly process, but also reduces the number of connection points and the possibility of faults. The assembly portion 11 is mechanically fixed to the coil bobbin 22 and electrically connected to the coil 21 by means such as welding. This connection method not only ensures the reliability of electrical contact, but also can withstand the influence of heat and mechanical vibration brought by the current. The wiring portion 12 is mechanically fixed to the base 23 and realizes stable current transmission between the coil terminal 10 and the external power supply through a screw terminal or other electrical connectors. Thus, through the cooperation of the coil assembly 20 and the coil terminal 10, a reliable electrical connection between the coil 21 and the external power supply can be ensured.

[0048] Optionally, as Figures 5 to 9As shown, at least one first protrusion 111 extending along the first direction x is provided on the assembly part 11. The coil bobbin 22 has a first extension part 221 extending along the second direction y perpendicular to the first direction x. The first extension part 221 has at least one first groove 2211 that cooperates with the first protrusion 111, ensuring that each first protrusion 111 can be firmly snapped into the corresponding first groove 2211, achieving a stable connection between the assembly part 11 and the coil bobbin 22. The setting of the first protrusion 111 enables the assembly part 11 to be accurately docked with the coil bobbin 22, while the first groove 2211 on the first extension part 221 provides a stable snap point. During installation, the first protrusion 111 is inserted into the first groove 2211, and a reliable mechanical connection is achieved through the tight fit between the protrusion and the groove. This structural design not only simplifies the assembly process but also enhances the firmness of the connection, avoiding electrical failures caused by loosening or detachment.

[0049] Optionally, as Figure 5 and Figure 6 shown, the end of the first protrusion 111 is designed as a first barb structure 1111. During assembly, the first protrusion 111 smoothly slides into the first groove 2211 and generates a mechanical lock after insertion through the first barb structure 1111. This method provides an additional fixing force after the snap connection is completed, ensuring that the connection between the assembly part 11 and the coil assembly 20 remains stable even under vibration or other external forces and will not loosen or detach. Through this design, the first protrusion 111 can be firmly snapped into the first groove 2211 through the first barb structure 1111, thus ensuring a stable connection between the coil terminal 10 and the coil assembly 20. In addition, the combination of the first protrusion 111 and the first barb structure 1111 simplifies the assembly process. This design avoids the need for additional fasteners or welding processes in traditional assembly methods, achieving a fast and reliable connection. By reducing the number of assembly steps and components, the assembly efficiency is improved, and the potential failure risk is reduced.

[0050] It should be noted that the number of the first protrusions 111 can be one, two, three or other numbers. Correspondingly, the number of the first grooves 2211 can be one, two, three or other numbers, as long as a reliable connection between the assembly part 11 and the coil bobbin 22 can be ensured. The position of the first barb structure 1111 can be selected on one side or both sides of the end of the first protrusion 111 according to actual needs, enhancing the flexibility and adaptability of the design. Whether it is a single-sided barb or a double-sided barb, it can effectively ensure the tight combination of the assembly part 11 and the coil assembly 20. Each first barb structure 1111 can be designed as a rounded corner to facilitate mold release and assembly, ensure the smooth progress of the snap connection process, and reduce the risk of wear and damage during the production process.

[0051] Optionally, as Figure 6and Figure 7 As shown, an extended winding protrusion 112 is provided on the assembly portion 11, and the winding protrusion 112 can be located on the side of the assembly portion 11 away from the first protrusion 111. Specifically, the first protrusion 111 and the winding protrusion 112 are respectively arranged on both sides of the assembly portion 11 along the first direction x, and the first protrusion 111 on one side is used to engage with the first groove 2211 of the coil assembly 20, providing a firm mechanical connection. The winding protrusion 112 on the other side provides a fixing and guiding path for the wire harness by winding the wire harness at the end of the coil 21, simplifies the management and connection process of the coil 21, and realizes electrical connection. By distributing the mechanical connection and the electrical connection on both sides of the assembly portion 11, mutual interference is reduced, and the stability and durability of the connection are enhanced. At the same time, the simplified assembly process and clear functional distinction improve production efficiency, reduce manufacturing and assembly costs, and thus improve the cost performance of the product.

[0052] In order to ensure the reliable connection between the coil 21 and the assembly part 11, a part of the wire harness at the end of the coil 21 is usually fixed and wound on the winding protrusion 112 by soldering, wherein the coil 21 can be made of enameled wire. Optionally, the winding protrusion 112 includes a first winding segment 1121 and a second winding segment 1122 connected in sequence along the first direction x, and a part of the wire harness of the coil 21 is wound on the first winding segment 1121 and the second winding segment 1122, and a boss 1123 is arranged between the first winding segment 1121 and the second winding segment 1122, and the boss 1123 is located between the wire harness wound on the first winding segment 1121 and the wire harness wound on the second winding segment 1122. Therefore, when soldering is used to weld the wire harness at the end of the coil 21 to the first winding segment 1121, even if tin creeping occurs, due to the presence of the boss 1123, the tin will not flow to the second winding segment 1122, thereby avoiding unnecessary welding and fixing of the wire harness wound on the second winding segment 1122, that is, the wire harness of the first winding segment 1121 is fixedly wound, while the wire harness of the second winding segment 1122 is movably wound, thereby achieving effective separation of fixed winding and movable winding. The first winding segment 1121 ensures a reliable connection at the end of the coil 21, while the second winding segment 1122 provides the necessary movable length for the coil 21 during the operation of the contactor. This design can effectively prevent the problem of wire breakage caused by tension changes and improve the durability and reliability of the contactor during use.

[0053] Alternatively, if Figures 6 to 9As shown, at least one second protrusion 121 extending outward is provided on the wiring portion 12, and the second protrusion 121 extends along a third direction z perpendicular to both the first direction x and the second direction y. The base 23 has a second extension portion 231 extending outward from the side wall of the inner cavity 23a along the second direction y, and the second extension portion 231 has at least one second groove 2311 matched with the second protrusion 121, so as to ensure that each second protrusion 121 can be firmly inserted into the corresponding second groove 2311 along the third direction z, thereby realizing a stable connection between the wiring portion 12 and the base 23. The provision of the second protrusion 121 enables the wiring portion 12 to be precisely docked with the base 23, and the second groove 2311 on the second extension portion 231 provides a stable clamping point. During the installation process, the second protrusion 121 is inserted into the second groove 2311, and a reliable mechanical connection is achieved through the close fit between the protrusion and the groove. This structural design not only simplifies the assembly process, but also enhances the firmness of the connection, and avoids electrical failures caused by looseness or falling off.

[0054] Alternatively, if Figure 6 and Figure 7 As shown, the end of the second protrusion 121 is designed as a second barb structure 1211. During assembly, the second protrusion 121 slides smoothly into the second groove 2311, and a mechanical lock is generated after insertion through the second barb structure 1211. This method provides additional fixing force after the clamping is completed, ensuring that even under vibration or other external forces, the connection between the wiring part 12 and the coil assembly 20 is still stable and will not loosen or fall off. Through this design, the second protrusion 121 can be firmly clamped in the second groove 2311 through the second barb structure 1211, thereby ensuring a stable connection between the coil terminal 10 and the coil assembly 20. In addition, the combination of the second protrusion 121 and the second barb structure 1211 simplifies the assembly process. This design avoids the need for additional fasteners or welding processes in traditional assembly methods, and achieves a quick and reliable connection. By reducing the number of assembly steps and parts, assembly efficiency is improved and potential failure risks are reduced.

[0055] Alternatively, if Figure 6 and Figure 7 As shown, the second barb structure 1211 is located at one end of the second protrusion 121 close to the wiring portion 12, which is intended to reduce the resistance during insertion and make the assembly process smoother. At the same time, this structure can provide additional fixing force, effectively preventing the wiring portion 12 from loosening or moving during use, and ensuring the stability and reliability of the coil terminal 10. A guide fillet is provided at the end of the second protrusion 121 away from the wiring portion 12, which further optimizes the insertion process of the wiring portion 12. The design of the guide fillet helps to guide the wiring portion 12 to be correctly inserted into the coil assembly 20, and reduces the friction that may be generated during the insertion process, making the operation smoother and more precise.

[0056] Optionally, as Figure 6 and Figure 7 shown, for the convenience of connecting to an external power source and to ensure that the connection process is not interfered with or obstructed by other components, a wiring terminal 122 is provided at one end of the wiring portion 12 facing away from the assembly portion 11. The wiring terminal 122 is electrically connected to the external power source to ensure that the coil 21 can be correctly connected to the external power source. In the embodiment of the present application, the wiring terminal 122 is a screw terminal. The electrical connection between the screw terminal and the external power source is a common and reliable electrical connection method. By placing the exposed portion of the wire connected to the external power source under the washer-shaped gasket, and then inserting the wiring screw through the washer-shaped gasket and the wire successively into the screw terminal and the second extension portion 231. As the wiring screw rotates and tightens, under the pressure of the head of the wiring screw, the washer-shaped gasket firmly presses the wire against the screw terminal, ensuring good electrical contact and mechanical connection, ensuring that the wire will not be damaged or broken during the fixing process of the wiring screw, and promoting uniform physical contact between the wire and the screw terminal.

[0057] Optionally, as Figures 5 to 9 shown, the coil terminal 10 further includes a connecting portion 13 integrally formed with the assembly portion 11 and the wiring portion 12. The assembly portion 11, the connecting portion 13, and the wiring portion 12 are connected in sequence, and the three are in a Z-shaped structure. Specifically, the assembly portion 11, the connecting portion 13, and the wiring portion 12 of the coil terminal 10 are tightly combined through an integral molding process to form a Z-shaped structure. The Z-shaped structure enables the assembly portion 11 and the wiring portion 12 to be arranged at different heights along the third direction z, forming a reasonable height difference. Correspondingly, the first extension portion 221 and the second extension portion 231 also have a height difference in the third direction z, leaving enough space for the installation of the coil terminal 10, so that the connection between the assembly portion 11 and the first extension portion 221 and the connection between the wiring portion 12 and the second extension portion 231 do not affect each other. The bending design of the connecting portion 13 effectively separates the assembly portion 11 and the wiring portion 12, enabling the wiring portion 12 to be located at a lower position, facilitating the electrical connection to the external power source and meeting the requirement of lower incoming wire. At the same time, this three-dimensional space bending design minimizes the volume of the coil terminal 10 and makes the layout more reasonable, thereby effectively reducing the overall volume of the contactor. Preferably, the assembly portion 11 and the wiring portion 12 extend along the positive and negative directions of the second direction y respectively, while the connecting portion 13 extends along the third direction z. That is, the two ends of the connecting portion 13 are vertically connected to the assembly portion 11 and the wiring portion 12 respectively, further optimizing the utilization of the internal space and ensuring that the assembly portion 11 and the wiring portion 12 will not interfere with each other when connected to the coil assembly 20, ensuring the overall stability and reliability of the contactor.

[0058] Optionally, as Figure 10As shown, the coil assembly 20 also includes a protective cover 24, the second extension portion 231 is provided with a third clamping portion 2312, and the protective cover 24 is provided with a fourth clamping portion 241. The third clamping portion 2312 and the fourth clamping portion 241 are engaged and clamped, so that the protective cover 24 can be reliably covered on the wiring portion 12, and the connecting parts are reduced, so that the assembly is more convenient, and the assembly time and cost are reduced. The end of the coil terminal 10 away from the first groove 2211, that is, the wiring terminal 122 is located in the cover space formed between the protective cover 24 and the second extension portion 231, so that the wiring terminal 122 is protected from damage or interference from the external environment, and the stability of the electrical connection is improved.

[0059] Alternatively, if Figures 10 to 12 As shown, the coil assembly 20 further includes a second housing 26 covering the side of the first housing 25 away from the base 23, a fifth clamping portion 242 is provided on the side of the protective cover 24 away from the fourth clamping portion 241, and the second housing 26 is provided with a sixth clamping portion 261, and the fifth clamping portion 242 is clamped to the sixth clamping portion 261. The design of the second housing 26 not only provides mechanical protection, but also further improves the airtightness of the contactor, prevents external factors such as dust and moisture from affecting the coil assembly 20 and the coil terminal 10, and further improves the overall performance and service life of the contactor. In addition, by providing a fifth clamping portion 242 on the side of the protective cover 24 away from the fourth clamping portion 241, the second shell 26 is provided with a sixth clamping portion 261, and the fifth clamping portion 242 is clamped to the sixth clamping portion 261, the protective cover 24 forms a reliable connection with the base 23 and the second shell 26, and the three are connected by clamping, which simplifies the assembly process and improves the reliability and efficiency of the assembly.

[0060] Alternatively, if Figure 1 and Figure 6 As shown, a third extension portion 1221 extending along the first direction x is provided on the terminal 122. The third extension portion 1221 should be located on the side of the terminal 122 close to the protective cover 24. The third extension portion 1221 is clamped between the protective cover 24 and the second extension portion 231. Thus, the terminal 122 is pressed on the second extension portion 231 by the protective cover 24, further enhancing the fixing effect of the terminal portion 12 on the base 23 to prevent it from loosening.

[0061] Optionally, one end of the coil terminal 10 close to the coil bobbin 22, i.e., the assembly part 11, is located on the docking surface of the base 23 and the first housing 25, and the wiring part 12 is located on the second extension part 231 of the base 23. Among them, the docking surface is higher than the second extension part 231, and the height of the connecting part 13 is the height difference between the docking surface and the second extension part 231, thus achieving the purpose of lower wire inlet. This design ensures that the coil terminal 10 can achieve reliable connection with the smallest volume and simplifies the overall layout of the coil assembly 20. In addition, the mating and clamping surface of the first clamping part 232 and the second clamping part 251 should be higher than the docking surface. This design ensures the stable connection between the first housing 25 and the base 23 without affecting the layout of the coil terminal 10. By setting the first clamping part 232 and the second clamping part 251 at a higher position, sufficient space can be reserved for the layout of the coil terminal 10 to avoid interference during the installation process.

[0062] It should be noted that the coil bobbin 22 should have two first extension parts 221, which respectively clamp the corresponding coil terminals 10. Correspondingly, the second extension part 231 of the base 23 should also have two second grooves 2311, which respectively clamp the corresponding coil terminals 10. The protective cover 24 is located between the wiring ends 122 of the two coil terminals 10, and its two ends respectively press the third extension parts 1221 of the two wiring ends 122, thereby providing additional fixing force and protection. The wire harnesses at both ends of the coil 21 are respectively electrically connected to the winding protrusions 112 of the two coil terminals 10. Two first through holes 122a are provided at the wiring end 122, and two accommodating cavities 231a are provided on the second extension part 231. The accommodating cavities 231a have openings corresponding to the first through holes 122a. Each wiring screw passes through the corresponding first through hole 122a and is inserted into the corresponding accommodating cavity 231a, so that the input end and the output end of the external power supply are respectively electrically connected to the two wiring ends 122 to form a complete current loop. This structural design not only ensures the reliability of the electrical connection, but also simplifies the assembly process of the contactor, improves the production efficiency and product quality.

[0063] On the other hand, an embodiment of the present application provides a contactor, as Figure 1 shown, including a coil terminal 10 and the coil assembly 20 of any one of the above. Both ends of the coil terminal 10 are respectively fixed to the coil bobbin 22 and the base 23 of the coil assembly 20. The assembly part 11 and the wiring part 12 are respectively fixed to the coil bobbin 22 and the base 23 through mechanical connections, so that the coil terminal 10 is reliably connected to the coil assembly 20, effectively preventing failures caused by loosening or poor contact, improving the reliability of the electrical connection, and ensuring that the coil 21 can operate stably during operation. Since the contactor adopts the coil assembly 20 of any one of the above, it also has the same beneficial effects, which can be specifically referred to the previous description and will not be elaborated here.

[0064] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A coil assembly, characterized in that: The invention comprises a coil (21), a coil frame (22), a base (23) and a first shell (25), wherein the coil (21) is wound around the coil frame (22), an inner cavity (23a) is provided in the base (23), and the coil frame (22) is located in the inner cavity (23a); The inner cavity (23a) has an opening, the base (23) is provided with a first clamping portion (232), the first shell (25) is provided with a second clamping portion (251), and the first shell (25) is clamped to the second clamping portion (251) via the first clamping portion (232) to cover the periphery of the opening; The coil assembly (20) is fixedly connected to two coil terminals (10), two ends of the coil (21) are electrically connected to the two coil terminals (10) respectively, and the first clamping portion (232) is located between the two coil terminals (10).

2. The coil assembly according to claim 1, characterized in that: The base (23) and the coil frame (22) are respectively used to fix two ends of the coil terminal (10).

3. The coil assembly according to claim 2, characterized in that: The coil frame (22) has an outwardly extending first extension portion (221), the first extension portion (221) has at least one first groove (2211), and the first groove (2211) is used to clamp one end of the coil terminal (10).

4. The coil assembly according to claim 3, characterized in that: The base (23) has a second extension portion (231) extending outward from the side wall of the inner cavity (23a), and the second extension portion (231) has at least one second groove (2311), and the second groove (2311) is used to clamp the end of the coil terminal (10) away from the first groove (2211).

5. The coil assembly according to claim 4, characterized in that: The first extension portion (221) and the second extension portion (231) both extend along a second direction (y), and the first extension portion (221) and the second extension portion (231) have a height difference in a third direction (z) perpendicular to the second direction (y).

6. The coil assembly according to claim 4 or 5, characterized in that: The coil assembly (20) further comprises a protective cover (24), the second extension portion (231) being provided with a third clamping portion (2312), the protective cover (24) being provided with a fourth clamping portion (241), the protective cover (24) being clamped to the fourth clamping portion (241) via the third clamping portion (2312) and being covered on the second extension portion (231), and the end of the coil terminal (10) facing away from the first groove (2211) being located in a covering space formed between the protective cover (24) and the second extension portion (231).

7. The coil assembly according to claim 6, characterized in that: The coil assembly (20) further comprises a second shell (26) covering the side of the first shell (25) facing away from the base (23); a fifth clamping portion (242) is provided on the side of the protective cover (24) facing away from the fourth clamping portion (241); the second shell (26) is provided with a sixth clamping portion (261); and the fifth clamping portion (242) is clamped to the sixth clamping portion (261).

8. The coil assembly according to claim 6, characterized in that: The protective cover (24) and the second extension portion (231) clamp an end of the coil terminal (10) that faces away from the first groove (2211).

9. The coil assembly according to any one of claims 2 to 5, characterized in that: One end of the coil terminal (10) close to the coil frame (22) is located at the joint surface between the base (23) and the first shell (25).

10. A contactor, characterized in that: It comprises a coil terminal (10) and a coil component (20) according to any one of claims 1 to 9, wherein two ends of the coil terminal (10) are respectively fixed to a coil frame (22) and a base (23) of the coil component (20).

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