Coil terminal and contactor

Abstract

The utility model provides a coil terminal and a contactor, and relates to the technical field of electronic power, the coil terminal comprises an assembling part, a connecting part and a wiring part which are integrally formed, and the assembling part, the connecting part and the wiring part are connected in sequence and form a Z-shaped structure. And the Z-shaped structure enables the assembling part and the wiring part to be arranged at different heights along the third direction to form a reasonable height difference, so that the wiring part can be positioned at a lower position, the electric connection with an external power supply is facilitated, and the requirement of lower wire incoming is met. The assembling part and the wiring part are respectively fixed to the coil assembly, the assembling part is electrically connected with a coil of the coil assembly, and the wiring part is electrically connected with an external power supply, so that the connection between the coil assembly and the external power supply is simplified, the operation steps and time in the assembling process are reduced, the number of connecting points is also reduced, and the production efficiency is improved. And the possibility of fault occurrence is reduced. In general, the coil terminal improves the connection reliability and stability of the contactor, and reduces the failure rate caused by the connection problem.

Description

Technical Field

[0001] The present application relates to the field of electronic power technology, and more particularly, to a coil terminal 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 over a long distance 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 welding machines, and capacitor banks. The contactor realizes its on-off function by connecting the coil to an external power supply through a coil terminal.

[0003] In the prior art, the coil terminal of a bottom-inlet contactor is usually a plug-in structure. By setting plug-in terminals, connecting an external power supply to the plug-in terminals, and then inserting the plug-in terminals into the coil terminals, the connection between the external power supply and the coil terminals is achieved. However, this plug-in connection method has some obvious defects. The plug-in form is likely to increase the number of fault points at the connection, thereby increasing the failure rate of the contactor. When a fault occurs at the plug-in connection, it may cause the contactor to fail to be energized normally, and in severe cases, even lead to the failure of the product function. Summary of the Utility Model

[0004] The purpose of the present application is to provide a coil terminal 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 terminal, which includes an integrally formed assembly part, a connection part, and a wiring part. The assembly part, the connection part, and the wiring part are connected in sequence, and the three are in a Z-shaped structure. The assembly part and the wiring part are respectively used to be fixed to the coil assembly. The assembly part is used to be electrically connected to the coil of the coil assembly, and the wiring part is used to be electrically connected to an external power supply.

[0007] Optionally, at least one first protrusion extending outwards is provided on the assembly part. The end of the first protrusion has a first barb structure, and the first protrusion is clamped to the coil assembly through the first barb structure.

[0008] Optionally, a winding protrusion extending outwards is provided on the assembly part. The winding protrusion is used to wind a part of the wire harness of the coil to be electrically connected to the coil.

[0009] Optionally, the winding protrusion extends outwards from the assembly part in a first direction.

[0010] Optionally, the winding protrusion includes a first winding segment and a second winding segment connected in sequence. Part of the wire harness of the coil is wound around both the first winding segment and the second winding segment. A boss is provided between the first winding segment and the second winding segment, and the boss is located between the wire harness wound around the first winding segment and the wire harness wound around the second winding segment.

[0011] Optionally, one end of the wiring portion facing away from the assembling portion has a wiring terminal, and the wiring terminal is electrically connected to an external power supply. At least one second protrusion extending outward is provided on the wiring portion, and the second protrusion has a second barbed structure. The second protrusion is clamped to the coil assembly through the second barbed structure.

[0012] Optionally, the second barbed structure is located at one end of the second protrusion close to the wiring portion, and a guiding portion is provided at one end of the second protrusion facing away from the wiring portion.

[0013] On the other hand, an embodiment of the present application provides a contactor, including a coil assembly and a coil terminal of any one of the above. The coil assembly includes a base, a coil bobbin, and a first housing. The assembling portion and the wiring portion of the coil terminal are respectively fixed to the coil bobbin and the base. An inner cavity for placing the coil bobbin is provided in the base, and the first housing covers the base.

[0014] Optionally, a first protrusion is provided on the assembling portion of the coil terminal, a second protrusion is provided on the wiring portion of the coil terminal, the coil bobbin has a first extension portion extending outward, the first extension portion has a first groove cooperating with the first protrusion, and the base has a second groove cooperating with the second protrusion.

[0015] Optionally, the wiring portion of the coil terminal has a wiring terminal, and a third extension portion extending outward is provided on the wiring terminal. The contactor further includes a protective cover covering the wiring portion. The protective cover is clamped to the base, and the third extension portion is clamped between the protective cover and the base.

[0016] The beneficial effects of the present application include:

[0017] The present application provides a coil terminal, which includes an integrally formed assembly part, a connection part, and a wiring part. The assembly part, the connection part, and the wiring part are connected in sequence, and the three are in a Z-shaped structure. The Z-shaped structure enables the assembly part and the wiring part to be arranged at different heights along the third direction, forming a reasonable height difference, so that the wiring part can be located at a lower position, facilitating the electrical connection with an external power supply and meeting the requirement of lower incoming wire. The assembly part and the wiring part are respectively used for fixing to the coil assembly. The assembly part is used for electrically connecting with the coil of the coil assembly, and the wiring part is used for electrically connecting with the external power supply. Through the integrally formed design of the present application, the tight connection between the assembly part and the wiring part is ensured, and the connection between the coil assembly 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, decreasing the possibility of faults. The assembly part can be firmly fixed on the coil assembly, ensuring a reliable connection between the coil and the coil terminal, thereby avoiding electrical faults caused by loose connection. The connection between the wiring part and the external power supply is also firm and reliable, ensuring the stable transmission of current. Generally speaking, such a coil terminal significantly improves the connection reliability and stability of the contactor and reduces the failure rate caused by connection problems. Description of the Drawings

[0018] 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, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0019] Figure 1 One of the structural schematic diagrams of a coil terminal provided by an embodiment of the present application;

[0020] Figure 2 The structural schematic diagram of the coil skeleton of a coil assembly provided by an embodiment of the present application;

[0021] Figure 3 The structural schematic diagram of the base of a coil assembly provided by an embodiment of the present application;

[0022] Figure 4 The structural schematic diagram of the connection between a coil assembly and a coil terminal provided by an embodiment of the present application;

[0023] Figure 5 Another structural schematic diagram of a coil terminal provided by an embodiment of the present application;

[0024] Figure 6 Another structural schematic diagram of a coil terminal provided by an embodiment of the present application;

[0025] Figure 7 The fourth structural schematic diagram of a coil terminal provided by an embodiment of the present application;

[0026] Figure 8 The fifth structural schematic diagram of a coil terminal provided by an embodiment of the present application;

[0027] Figure 9 The structural schematic diagram of a contactor provided by an embodiment of the present application.

[0028] Icons: 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 - Connection 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 - Accommodation cavity; 2311 - Second groove; 2312 - Third clamping part; 232 - First clamping part; 24 - Protective cover; 241 - Fourth clamping part; 25 - First housing; 251 - Second clamping part; x - First direction; y - Second direction; z - Third direction. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. It should be noted that, without conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the protection scope of the present application.

[0031] It should be noted that: Similar reference numerals and letters denote similar items in the following accompanying drawings. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0032] In the description of the present 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 in which the product of this application is customarily placed during use. It is only for the convenience of describing the present 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 cannot be construed as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0033] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, 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.

[0034] In the description of the present 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 the present application can be understood according to specific situations.

[0035] 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, electric heating equipment, electric lighting, electric welding machines, and capacitor banks. Its key components are the coil assembly, including parts such as a base, a coil skeleton, a coil, coil terminals, an iron core, a wire, and a terminal. Currently, the coil is usually connected to an external power supply by plugging in through a docking plug structure, but this method is prone to increasing the number of fault points and the failure rate.

[0036] To solve the above problems, on the one hand, an embodiment of the present application provides a coil terminal 10, as Figure 1 shown, including an integrally formed assembly part 11, a connecting part 13, and a wiring part 12. The assembly part 11, the connecting part 13, and the wiring part 12 are connected in sequence, and the three are in a Z-shaped structure. The assembly part 11 and the wiring part 12 are respectively used to be fixed to the coil assembly 20. The assembly part 11 is used to be electrically connected to the coil 21 of the coil assembly 20, and the wiring part 12 is used to be electrically connected to an external power supply.

[0037] Specifically, the assembly part 11, the connection part 13, and the wiring part 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 part 11 and the wiring part 12 to be arranged at different heights along the third direction z, forming a reasonable height difference. The bending design of the connection part 13 effectively separates the assembly part 11 and the wiring part 12, enabling the wiring part 12 to be located at a lower position, facilitating the electrical connection with an external power supply, and meeting the requirement of bottom-inlet wiring. At the same time, this three-dimensional bending design minimizes the volume of the coil terminal 10 and makes the layout more reasonable, thus effectively reducing the overall volume of the contactor. Preferably, the assembly part 11 and the wiring part 12 extend along the positive and negative directions of the second direction y respectively, while the connection part 13 extends along the third direction z. That is, the two ends of the connection part 13 are vertically connected to the assembly part 11 and the wiring part 12 respectively, further optimizing the utilization of the internal space and ensuring that the assembly part 11 and the wiring part 12 do not interfere with each other when connecting to the coil assembly 20, guaranteeing the overall stability and reliability of the contactor.

[0038] In addition, through the integral molding design, the tight connection between the assembly part 11 and the wiring part 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 during the assembly process but also reduces the number of connection points, decreasing the possibility of faults. The assembly part 11 can be firmly fixed on the coil assembly 20, ensuring a reliable connection between the coil 21 and the coil terminal 10, thus avoiding electrical faults caused by loose connections. The connection between the wiring part 12 and the external power supply is also firm and reliable, ensuring the stable transmission of current. Generally speaking, this kind of coil terminal 10 significantly improves the connection reliability and stability of the contactor and reduces the failure rate caused by connection problems.

[0039] Optionally, as Figures 2 to 4As shown, the coil assembly 20 includes a coil 21, a coil bobbin 22, and a base 23. 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 a fixed point for 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. At the same time, this design rationally utilizes space, greatly reducing the overall volume of the contactor, which is beneficial for application in compact industrial equipment. In addition, by fixing the wiring part 12 and the assembly part 11 through the base 23 and the coil bobbin 22 respectively, it is ensured that the coil terminals 10 will not loosen or shift during use.

[0040] Optionally, as Figures 5 to 8 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 a 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 clamped in the corresponding first groove 2211, realizing 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 clamping 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.

[0041] Optionally, as Figure 5 and Figure 6As 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 mechanical locking after insertion through the first barb structure 1111. This method provides 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 become loose or fall off. Through this design, the first protrusion 111 can be firmly snap-connected to the first groove 2211 through the first barb structure 1111, thus ensuring the 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 and achieves 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.

[0042] 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 the reliable connection between the assembly part 11 and the coil skeleton 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. In addition, the first protrusion 111 can be set as a trapezoidal structure, and the width of the end of the first protrusion 111 provided with the first barb structure 1111 is smaller than the width of the end of the first protrusion 111 connected to the assembly part 11 to leave enough width for the demolding of the first barb structure 1111.

[0043] Optionally, as Figure 5 and Figure 6As 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. It should be understood that the winding protrusion 112 does not need to be bent after winding is completed, that is, the winding protrusion 112 always extends outward from the assembly portion 11 along the first direction to facilitate assembly.

[0044] 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.

[0045] Alternatively, if Figures 5 to 8As shown, at least one second protrusion 121 extending outward is provided on the wiring part 12. 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 part 231 extending outward from the side wall of the inner cavity 23a along the second direction y. The second extension part 231 has at least one second groove 2311 that cooperates with the second protrusion 121 to ensure that each second protrusion 121 can be firmly inserted into the corresponding second groove 2311 along the third direction z, realizing a stable connection between the wiring part 12 and the base 23. The setting of the second protrusion 121 enables the wiring part 12 to be accurately docked with the base 23, while the second groove 2311 on the second extension part 231 provides a stable clamping point. During installation, the second protrusion 121 is inserted into the second groove 2311, 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. It should be noted that the first extension part 221 and the second extension part 231 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 part 11 and the first extension part 221 and the connection between the wiring part 12 and the second extension part 231 do not affect each other.

[0046] Optionally, as Figure 5 and Figure 6 shown, the end of the second protrusion 121 is designed as a second barb structure 1211. During assembly, the second protrusion 121 smoothly slides into the second groove 2311 and generates a mechanical lock after insertion through the second barb structure 1211. This method provides an 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 remains stable and does not loosen or detach. Through this design, the second protrusion 121 can be firmly clamped in the second groove 2311 through the second barb structure 1211, thus 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, 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.

[0047] Optionally, as Figure 5 and Figure 6As shown, the second barb structure 1211 is located at one end of the second protrusion 121 close to the wiring part 12, aiming to reduce the resistance during insertion and make the assembly process smoother. At the same time, this structure can provide additional fixing force to effectively prevent the wiring part 12 from loosening or moving during use, ensuring the stability and reliability of the coil terminal 10. A guiding part is provided at the end of the second protrusion 121 facing away from the wiring part 12, further optimizing the insertion process of the wiring part 12. The design of the guiding part helps to guide the wiring part 12 to be correctly inserted into the coil assembly 20 and reduces the possible frictional force during insertion, making the operation smoother and more precise.

[0048] Optionally, as Figure 5 and Figure 6 shown, for the convenience of connecting to an external power source and ensuring that the connection process is not interfered with or obstructed by other components, a wiring terminal 122 is provided at the end of the wiring part 12 facing away from the assembly part 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 part of the wire connected to the external power source under the tile-shaped gasket, and then inserting the wiring screw through the tile-shaped gasket and the wire into the screw terminal and the second extension part 231 in sequence. As the wiring screw rotates and tightens, under the pressure of the head of the wiring screw, the tile-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.

[0049] Optionally, as Figure 9 shown, the coil assembly 20 further includes a protective cover 24. The second extension part 231 is provided with a third clamping part 2312, and the protective cover 24 is provided with a fourth clamping part 241. The third clamping part 2312 cooperates with the fourth clamping part 241 for clamping, so that the protective cover 24 can reliably cover the wiring part 12, and the number of connecting parts 13 is reduced, making the assembly more convenient and reducing the assembly time and cost. At the end of the coil terminal 10 facing away from the first groove 2211, that is, the wiring terminal 122 is located in the covering space formed between the protective cover 24 and the second extension part 231, so that the wiring terminal 122 is protected from damage or interference from the external environment, improving the stability of the electrical connection.

[0050] Optionally, as Figure 5 and Figure 9As 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 by the protective cover 24 onto the second extension portion 231, further enhancing the fixing effect of the wiring portion 12 on the base 23 and preventing it from loosening.

[0051] Optionally, as Figure 9 shown, the inner cavity 23a has an opening. The coil assembly 20 further includes a first housing 25. 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. This clamping method ensures the 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. Through the cooperation of the first clamping portion 232 and the second clamping portion 251, the first housing 25 can be stably fixed on the base 23 and at the same time cover the periphery of the opening of the inner cavity 23a. Such a design can realize automatic assembly, simplify the assembly process of the first housing 25 and the base 23, and also improve the reliability and efficiency of the assembly. The design of the first housing 25 not only provides mechanical protection but also prevents the influence of external factors such as dust and moisture on the coil assembly 20 and the coil terminal 10 to a certain extent, further improving the overall performance and service life of the contactor.

[0052] Optionally, one end of the coil terminal 10 close to the coil bobbin 22, that is, the assembly portion 11, is located at the docking surface of the base 23 and the first housing 25, and the wiring portion 12 is located at the second extension portion 231 of the base 23. Among them, the docking surface is higher than the second extension portion 231, and the height of the connecting portion 13 is the height difference between the docking surface and the second extension portion 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 clamping surface of the first clamping portion 232 and the second clamping portion 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 portion 232 and the second clamping portion 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.

[0053] Optionally, as Figure 9As shown in the figure, two coil terminals 10 are fixedly connected to the coil assembly 20. At this time, the coil bobbin 22 should have two first extension parts 221, which are respectively clamped to the corresponding coil terminals 10. Correspondingly, the second extension part 231 of the base 23 should also have two second grooves 2311, which are respectively clamped to the corresponding coil terminals 10. The protective cover 24 is located between the connection ends 122 of the two coil terminals 10, and its two ends respectively press the third extension parts 1221 of the two connection 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 connection ends 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 connection 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 connection 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.

[0054] On the other hand, an embodiment of the present application provides a contactor, as Figure 9 shown, which includes a coil assembly 20 and the coil terminal 10 of any one of the above. The coil assembly 20 includes a base 23, a coil bobbin 22 and a first housing 25. The coil 21 is wound around the coil bobbin 22, and the wire harnesses at the ends of the coil 21 are wound around the winding protrusions 112 of the assembly part 11 of the coil terminal 10. The connection ends 122 of the connection part 12 are electrically connected to the external power supply. Thus, the connection between the coil 21 and the external power supply is realized. The assembly part 11 and the connection part 12 are respectively fixed to the coil bobbin 22 and the base 23 by mechanical connection, so that the connection between the coil terminal 10 and the coil assembly 20 is reliable, 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 work. In addition, an inner cavity 23a for placing the coil bobbin 22 is provided in the base 23, making reasonable use of the space, and the first housing 25 is covered on the base 23 to protect the coil 21 from the external environment, enhancing the overall reliability and durability of the contactor. Since the contactor adopts the coil terminal 10 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.

[0055] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications 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 in the protection scope of the present application.

Claims

1. A coil terminal, characterized in that: The invention comprises an integrally formed assembly part (11), a connecting part (13) and a wiring part (12); the assembly part (11), the connecting part (13) and the wiring part (12) are connected in sequence and form a Z-shaped structure; the assembly part (11) and the wiring part (12) are respectively used to be fixed to a coil assembly (20); the assembly part (11) is used to be electrically connected to a coil (21) of the coil assembly (20); and the wiring part (12) is used to be electrically connected to an external power supply.

2. The coil terminal according to claim 1, characterized in that: At least one first protrusion (111) is provided on the assembly portion (11) and is extended outwardly, the end of the first protrusion (111) has a first barb structure (1111), and the first protrusion (111) is clamped to the coil assembly (20) via the first barb structure (1111).

3. The coil terminal according to claim 1 or 2, characterized in that: An extended winding protrusion (112) is provided on the assembly portion (11), and the winding protrusion (112) is used to wind a part of the wire harness of the coil (21) to be electrically connected to the coil (21).

4. The coil terminal according to claim 3, characterized in that: The winding protrusion (112) extends outward from the assembly portion (11) along a first direction (x).

5. The coil terminal according to claim 3, characterized in that: The winding protrusion (112) comprises a first winding segment (1121) and a second winding segment (1122) connected in sequence, and a partial wire harness of the coil (21) is wound around both the first winding segment (1121) and the second winding segment (1122), and a boss (1123) is provided between the first winding segment (1121) and the second winding segment (1122), and the boss (1123) is located between the wire harness wound around the first winding segment (1121) and the wire harness wound around the second winding segment (1122).

6. The coil terminal according to claim 1 or 2, characterized in that: The wiring portion (12) has a wiring terminal (122) at one end facing away from the assembly portion (11), and the wiring terminal (122) is electrically connected to the external power supply. The wiring portion (12) is provided with at least one second protrusion (121) extending outwardly, and the second protrusion (121) has a second barb structure (1211). The second protrusion (121) is clamped to the coil assembly (20) via the second barb structure (1211).

7. The coil terminal according to claim 6, characterized in that: The second barb structure (1211) is located at one end of the second protrusion (121) close to the wiring portion (12), and a guide portion is provided at one end of the second protrusion (121) away from the wiring portion (12).

8. A contactor, characterized in that: It comprises a coil component (20) and a coil terminal (10) according to any one of claims 1 to 7, wherein the coil component (20) comprises a base (23), a coil skeleton (22) and a first shell (25), the assembly portion (11) and the wiring portion (12) of the coil terminal (10) are respectively fixed to the coil skeleton (22) and the base (23), an inner cavity (23a) for placing the coil skeleton (22) is opened in the base (23), and the first shell (25) covers the base (23).

9. The contactor according to claim 8, characterized in that: The assembly portion (11) of the coil terminal (10) is provided with a first protrusion (111), the connection portion (12) of the coil terminal (10) is provided with a second protrusion (121), the coil skeleton (22) has an extended first extension portion (221), the first extension portion (221) has a first groove (2211) matching with the first protrusion (111), and the base (23) has a second groove (2311) matching with the second protrusion (121).

10. The contactor according to claim 8 or 9, characterized in that: The connection portion (12) of the coil terminal (10) has a connection terminal (122), and an extended third extension portion (1221) is arranged on the connection terminal (122). The contactor also includes a protective cover (24) covering the connection portion (12), the protective cover (24) is snap-connected to the base (23), and the third extension portion (1221) is clamped between the protective cover (24) and the base (23).

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