Surge suppressor and contactor system

Abstract

The utility model provides a surge suppressor and a contactor system, and relates to the technical field of low-voltage electric appliances. The surge suppressor comprises a wiring module and a surge module. The wiring module comprises a wiring sheet which is used for being electrically connected with a power supply and a control coil of the contactor. The surge module comprises a wiring pin, and the wiring pin is welded to the lug plate. The surge suppressor can be connected to the contactor such that the tab extends into the contactor and is electrically connected to the control coil. The surge suppressor is also removable from the contactor such that the tab is disconnected from the coil. In the surge suppressor, the wiring pin of the surge module can be directly welded on the lug plate of the wiring module, so that the wiring pin and a power line are not crimped between a tile pad screw of the wiring module and the lug plate, and the possibility of unreliable wiring can be reduced. In addition, a client can select the installation position of the surge suppressor on the contactor according to the wiring requirement, and the wiring convenience can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a surge suppressor and a contactor system. Background Art

[0002] The contactor system includes a contactor. A contactor is an electrical device used to control the connection and disconnection of a high-power circuit and is widely used in a variety of electrical devices and systems. When switching circuits, the contactor will face voltage surges such as voltage transients or voltage spikes, which can damage the contactor and the electronic components in its control circuit. Therefore, a surge suppressor is generally used on the control circuit of the contactor in order to limit and absorb overvoltage surges and protect electronic components.

[0003] However, in the related art, the surge suppressor is externally connected to the contactor, which causes problems of inconvenient or unreliable wiring. Utility Model Content

[0004] The present application provides a surge suppressor and a contactor system, which can improve the convenience and reliability of wiring.

[0005] In a first aspect, the present application provides a surge suppressor, which is applied to a contactor, wherein the contactor includes a control coil, and the surge suppressor includes a wiring module and a surge module. The wiring module includes a wiring lug, which is used to be electrically connected to a power supply and a control coil. The surge module includes a wiring pin, which is welded to the wiring lug. The surge suppressor can be connected to the contactor so that the wiring lug extends into the contactor and is electrically connected to the control coil. The surge suppressor can also be removed from the contactor so that the wiring lug is disconnected from the coil.

[0006] Through the above scheme, the surge suppressor provided by the present application includes not only a surge module, but also a wiring module. The wiring pins of the surge module can be directly welded to the wiring lugs of the wiring module, so that the wiring pins can be crimped between the tile screws and the wiring lugs of the wiring module together with the power cord, which can avoid double wiring of the wiring pins and the power cord, and reduce the impact on the power cord wiring. Therefore, even if the thickness of the wiring pins and the power cord is different, there will be no problem of the wiring pins or the power cord coming out from between the tile screws and the wiring lugs, thereby reducing the possibility of unreliable wiring problems.

[0007] In addition, the surge suppressor can be connected to the contactor and can also be removed from the contactor. In this way, on the one hand, the customer can choose the installation position of the surge suppressor on the contactor according to the wiring requirements. On the other hand, in the case where the external wiring of the main circuit blocks the wiring port of the control circuit and the wiring port of the surge suppressor, assuming that the surge suppressor has been installed on the contactor, the surge suppressor installed on the contactor can be removed from the contactor. Then, the power cord is electrically connected to the wiring lug of the removed surge suppressor. After that, the wiring lug of the surge suppressor connected to the power cord is extended into the coil terminal to achieve electrical connection between the wiring lug and the control coil. In other words, even if the above-mentioned wiring port is blocked, the present application can also achieve access to the power cord, so that the convenience of wiring can be improved.

[0008] In a possible design, the surge suppressor further includes a seat body, the seat body is provided with a mounting groove, and the groove wall of the mounting groove is provided with a through hole. The wiring piece includes a main body portion and an extension portion connected to each other, a part of the main body portion is located in the mounting groove, and an end of the extension portion away from the main body portion passes through the through hole and is located outside the mounting groove. The surge module is located in the seat body and outside the mounting groove, and the wiring pin is welded to the extension portion outside the mounting groove.

[0009] Through the above solution, the end of the extension part away from the main body part passes through the through hole and is located outside the installation slot, so that the part of the wiring piece used for electrical connection with the wiring pin can be led outside the installation slot, so that the wiring pin can be welded to the extension part outside the installation slot. In this way, the wiring pin does not need to extend into the installation slot, and does not need to be crimped between the tile washer screw and the wiring piece together with the power line, which effectively reduces the possibility of unreliable wiring caused by double wiring of the wiring pin and the power line.

[0010] In a possible design, the extension portion is provided with a receiving groove, the wiring pin portion is located in the receiving groove, and the wiring pin located in the receiving groove is welded to the groove wall of the receiving groove.

[0011] Through the above scheme, the groove walls in the accommodating groove close to the wiring pins can be used for welding with the wiring pins. Compared with the wiring piece without a accommodating groove, the area of ​​the wiring piece used for welding with the wiring pins is increased, thereby facilitating improving the reliability of the electrical connection between the wiring piece and the wiring pin.

[0012] In a possible design, a boss is provided on the groove wall of the installation groove, a limiting groove is provided at a position of the main body opposite to the boss, and the boss is located in the limiting groove. Alternatively, a limiting groove is provided on the groove wall of the installation groove, a boss is provided at a position of the main body opposite to the limiting groove, and the boss is located in the limiting groove.

[0013] Through the above solution, the boss is located in the limit groove, which can limit the possibility of the terminal piece moving relative to the base in the wiring direction of the power line. In the case that the terminal piece is not easy to move relative to the base, the electrical connection reliability between the terminal piece and the power line, and between the terminal piece and the control coil is high. Among them, the arrangement direction of the surge suppressor and the contactor is consistent with the wiring direction of the power line.

[0014] In a possible design, the side wall of the terminal piece abuts against the groove wall of the mounting groove.

[0015] Through the above scheme, the friction between the side wall of the terminal block and the groove wall of the installation groove can be increased, further reducing the possibility of movement of the terminal block relative to the seat body, thereby facilitating improving the reliability of the electrical connection between the terminal block and the power line, and between the terminal block and the control coil.

[0016] In a possible design, the surge suppressor further includes a cover body, which is detachably connected to the base body;

[0017] The cover body and the base body are connected to form an installation cavity, and the surge module and part of the wiring module are located in the installation cavity.

[0018] Through the above solution, the cover and the base can protect the surge module and part of the wiring module, reducing the possibility of damage caused by the surge module and part of the wiring module being exposed. In addition, the cover and the base are detachably connected, and when the structural parts such as the surge module or the wiring module located in the installation cavity are damaged, the cover can be easily removed from the base to replace the damaged structural parts.

[0019] In a possible design, one of the cover and the base is provided with a buckle, and the other of the cover and the base is provided with a slot, and the buckle is matched with the slot. Alternatively, one of the cover and the base is provided with an inserting strip, and the other of the cover and the base is provided with a slot, and the inserting strip is matched with the slot.

[0020] Through the above solution, the cover body and the base body can be detachably connected.

[0021] In a possible design, the cover body includes a crimping plate, and the crimping plate at least partially presses against the terminal piece.

[0022] Through the above scheme, the crimping plate can limit the possibility of the terminal piece moving relative to the seat body in the wiring direction of the power line. From another aspect, the reliability of the electrical connection between the terminal piece and the power line, and between the terminal piece and the control coil is improved. In addition, the crimping plate can limit the extent to which the power line extends into the installation slot, so that the power line can only extend into the installation slot at most, and will not extend into the contactor without restriction, which is convenient for guiding the operator to connect the power line.

[0023] In a second aspect, the present application provides a contactor system, including a contactor and the surge suppressor in the first aspect, wherein the surge suppressor is detachably connected to the contactor.

[0024] Through the above solution, it is convenient to select the installation position of the surge suppressor according to the wiring requirements of the customer, which improves the flexibility of the installation position of the surge suppressor. In addition, the surge suppressor can be detachably connected to the contactor, so that the position of the surge suppressor relative to the contactor is fixed, reducing the possibility of the surge suppressor moving during use and affecting the wiring reliability.

[0025] In one possible design, the contactor includes a housing. When the surge suppressor includes a mounting shell, one of the housing and the mounting shell is provided with a slot structure, and the other of the housing and the mounting shell is provided with a buckle structure, which buckles with the slot structure to connect the surge suppressor to the contactor.

[0026] Through the above solution, as long as the buckle structure and the slot structure are buckled, the surge suppressor can be detachably connected to the contactor. When the slot structure is provided on the housing and the buckle structure is provided on the mounting shell, there will be no protruding buckle structure on the housing of the contactor, making the appearance of the housing more regular.

[0027] The beneficial effects of the contactor system provided in the second aspect and each possible design of the second aspect can be referred to the beneficial effects brought about by the first aspect and each possible implementation method of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the overall structure of a contactor system provided in an embodiment of the present application.

[0029] Figure 2 An exploded diagram of a contactor system provided in an embodiment of the present application.

[0030] Figure 3 for Figure 2 Enlarged view of part A.

[0031] Figure 4 A schematic diagram of the overall structure of a surge suppressor provided in an embodiment of the present application.

[0032] Figure 5 An exploded diagram of a surge suppressor provided in an embodiment of the present application.

[0033] Figure 6 A schematic structural diagram of a seat body provided in an embodiment of the present application.

[0034] Figure 7 for Figure 6 Magnified view of part B.

[0035] Figure 8 A schematic diagram of the structure of a wiring piece provided in an embodiment of the present application.

[0036] Fig. 9 A schematic structural diagram of a cover body provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] 100, contactor; 110, housing; 111, slot structure;

[0039] 200, surge suppressor; 210, mounting shell; 211, buckle structure; 212, seat body; 2121, mounting groove; K, through hole; B1, first groove wall; B2, second groove wall; 2122, boss; 2123, slot; 213, cover body; 2131, buckle; 2132, crimping plate; 220, wiring piece; 221, main body; 2211, limiting groove; 2212, first side wall; 2213, second side wall; 222, extension part; 2221, accommodating groove; 230, wiring pin; 240, tile washer screw; 250, fastening screw. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification, claims and drawings of this application are intended to cover non-exclusive inclusions.

[0042] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0043] The term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0044] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the current limiting module of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are 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 understood as a limitation on the present application.

[0045] In addition, the terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0046] In the description of the present application, unless otherwise specified, "plurality" means more than two (including two), and similarly, "multiple groups" means more than two groups (including two).

[0047] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, the "connection" or "connection" of a mechanical structure can refer to a physical connection. For example, the physical connection can be a fixed connection, such as a fixed connection through a barrier, such as a fixed connection through a screw, bolt or other barrier; the physical connection can also be a detachable connection, such as a mutual snap connection or snap connection; the physical connection can also be an integral connection, such as welding, bonding or integral molding to form a connection for connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. The "connection" or "connection" of a circuit structure can refer to not only a physical connection, but also an electrical connection or a signal connection. For example, it can be a direct connection, that is, a physical connection, or it can be indirectly connected through at least one intermediate element, as long as the circuit is connected, and it can also be the internal connection of two elements; the signal connection can refer to a signal connection through a media medium, such as a radio wave, in addition to a signal connection through a circuit. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] A contactor usually includes a main circuit and a control circuit.

[0049] Among them, the main circuit is the part of the contactor that transmits electrical energy and is used to connect or disconnect high-power loads. The main circuit usually includes a power input terminal, a load terminal, and contacts. When the contactor is closed, the contacts in the main circuit are closed, the power supply is connected to the load, the current flows through the contactor, and the load starts working. When the contactor is opened, the contacts are separated, the power supply is disconnected from the load, and the current flow stops.

[0050] The control circuit is used to control the closing and opening of the contactor, and usually includes a control circuit and a control signal. The control circuit usually uses a low-power electrical signal to control the electromagnet in the contactor to generate a magnetic field, thereby controlling the closing and separation of the contactor's contacts. The control signal can be a DC or AC signal, depending on the design and application requirements of the contactor.

[0051] Through the coordination of the main circuit and the control circuit, the contactor can realize the remote control and protection of high-power loads and is effectively used in various industrial and commercial equipment.

[0052] When a surge suppressor is connected to the contactor, the surge suppressor, main circuit and control circuit all need to be wired. Usually, the surge suppressor has a wire. When wiring, the wire is first connected to the control circuit, and then the connection pins of the surge suppressor and the power line are connected to the aforementioned wire.

[0053] Regarding this wiring method of the related art, although the wiring position of the main circuit is different from the wiring positions of the control circuit and the surge suppressor, when the main circuit is connected to the external wiring, the external wiring of the main circuit has the problem of blocking the wiring port of the control circuit and the wiring port of the surge suppressor, which brings inconvenience to the wiring of the control circuit and the surge suppressor.

[0054] In addition, the connection pins and the power cord of the surge suppressor need to be pressed tightly between the tile screw and the above-mentioned wire, that is, multiple wiring is required. In the case where the thickness of the connection pins and the power cord are different, or in other words, the space occupied by the tile screw and the above-mentioned wire is different, the smaller one of the connection pins and the power cord is easy to come out from between the tile screw and the above-mentioned wire, resulting in unreliable wiring problems.

[0055] That is to say, the related art has the problem of inconvenient or unreliable wiring.

[0056] In view of this, the present application provides a surge suppressor and a contactor system to improve the convenience and reliability of wiring.

[0057] In order to enable those skilled in the art to better understand the present application, a brief introduction to the contactor system provided in the embodiment of the present application is given below.

[0058] Figure 1 The overall structure diagram of a contactor system provided in an embodiment of the present application is as follows: Figure 1 As shown, the contactor system includes a contactor 100 and a surge suppressor 200 , and the surge suppressor 200 is detachably connected to the contactor 100 .

[0059] The surge suppressor 200 is a device for protecting electronic devices from overvoltage surges, which are usually caused by sudden power failures, lightning activities, grid switching, motor startup, etc. These overvoltage surges may damage electronic devices or even burn them out.

[0060] Therefore, the surge suppressor 200 can be used as a common accessory and connected to the contactor 100 to limit and absorb overvoltage surges through the surge suppressor 200 to protect electronic components.

[0061] The surge suppressor 200 is connected to the contactor 100 in a detachable manner, so that the installation position of the surge suppressor 200 can be selected according to the wiring requirements of the customer, thereby improving the flexibility of the installation position of the surge suppressor 200. In addition, the surge suppressor 200 is detachably connected to the contactor 100, so that the position of the surge suppressor 200 relative to the contactor 100 is fixed, thereby reducing the possibility of the surge suppressor 200 moving in position during use and affecting the wiring reliability.

[0062] One contactor 100 can be connected to one or more surge suppressors 200 as needed. Figure 1 The contactor 100 shown is connected to two surge suppressors 200 , but this does not constitute a limitation on the technical solution of the present application.

[0063] Figure 2 An exploded diagram of a contactor system provided in an embodiment of the present application, Figure 3 for Figure 2 The enlarged view of part A in Figure 2 and Figure 3 As shown, the contactor 100 includes a housing 110. When the surge suppressor 200 includes a mounting shell 210, one of the housing 110 and the mounting shell 210 is provided with a slot structure 111, and the other of the housing 110 and the mounting shell 210 is provided with a buckle structure 211, and the buckle structure 211 is buckled with the slot structure 111 to connect the surge suppressor 200 to the contactor 100.

[0064] The housing 110 of the contactor 100 is used to accommodate a main circuit and a control circuit of the contactor 100 .

[0065] The surge suppressor 200 generally includes one or more metal oxide varistors. The mounting case 210 of the surge suppressor 200 is used to accommodate other components such as the metal oxide varistors.

[0066] The housing 110 is provided with a slot structure 111, and the mounting housing 210 is provided with a buckle structure 211, or the housing 110 is provided with a buckle structure 211, and the mounting housing 210 is provided with a slot structure 111, as long as the buckle structure 211 and the slot structure 111 are buckled, the surge suppressor 200 can be detachably connected to the contactor 100. Figure 2 and Figure 3 In the contactor system shown, the slot structure 111 is provided on the housing 110, and the buckle structure 211 is provided on the mounting shell 210. In this arrangement, there is no protruding buckle structure 211 on the housing 110 of the contactor 100, so that the appearance of the housing 110 is more regular.

[0067] The surge suppressor 200 in the embodiment of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0068] Figure 4 A schematic diagram of the overall structure of a surge suppressor provided in an embodiment of the present application is shown in FIG. Figure 5 1 is an exploded view of a surge suppressor provided in an embodiment of the present application. The surge suppressor 200 is applied to a contactor 100. The contactor 100 includes a control coil located in a control loop, such as Figure 4 and Figure 5 As shown, the surge suppressor 200 includes a wiring module and a surge module.

[0069] The wiring module includes a wiring piece 220, which is used to be electrically connected to the power supply and the control coil. The surge module includes a wiring pin 230, which is welded to the wiring piece 220. The surge suppressor 200 can be connected to the contactor 100 so that the wiring piece 220 extends into the contactor 100 and is electrically connected to the control coil. The surge suppressor 200 can also be removed from the contactor 100 so that the wiring piece 220 is disconnected from the control coil.

[0070] In addition to the wiring lug 220, the wiring module also includes a tile screw 240 and a fastening screw 250. The wiring lug 220 can be roughly plate-shaped. A portion of the wiring lug 220 and the tile screw 240 are located in the aforementioned mounting shell 210, and the portion of the wiring lug 220 located in the mounting shell 210 is used to be electrically connected to the power supply. Another portion of the wiring lug 220 is located outside the aforementioned mounting shell 210 and is used to be electrically connected to the aforementioned control coil. Among them, the contactor 100 can be provided with a coil terminal, and the portion of the wiring lug 220 located outside the mounting shell 210 can be electrically connected to the control coil through the coil terminal.

[0071] The connection pin 230 can be a wire or a connection piece, etc. Regardless of the structure of the connection pin 230, the connection pin 230 of the present application is welded to the connection piece 220, and the welding process of the connection pin 230 and the connection piece 220 can be performed before the surge suppressor 200 is installed on the contactor 100. In this way, after the surge suppressor 200 is installed on the contactor 100, it is only necessary to crimp the power line between the tile washer screw 240 and the connection piece 220 by tightening the screw 250 to achieve the electrical connection between the connection piece 220 and the power supply, without crimping the connection piece 220 between the tile washer screw 240 and the connection piece 220, so that the problem of unreliable wiring caused by multiple wiring can be avoided.

[0072] When the contactor 100 is provided with a coil terminal, when the surge suppressor 200 needs to be installed on the contactor 100, the wiring piece 220 of the surge suppressor 200 only needs to be inserted into the coil terminal to achieve electrical connection between the wiring piece 220 and the control coil.

[0073] In summary, the surge suppressor 200 provided by the present application includes not only a surge module, but also a wiring module. The wiring pin 230 of the surge module can be directly welded to the wiring piece 220 of the wiring module, so that the wiring pin 230 can be crimped between the tile screw 240 of the wiring module and the wiring piece 220 without the power line, which can avoid double wiring of the wiring pin 230 and the power line, and reduce the impact on the power wiring. Therefore, even if the thickness of the wiring pin 230 and the power line is different, the problem of the wiring pin 230 or the power line coming out from between the tile screw 240 and the wiring piece 220 will not occur, thereby reducing the possibility of unreliable wiring problems.

[0074] In addition, the surge suppressor 200 can be connected to the contactor 100 and can also be removed from the contactor 100. In this way, on the one hand, the customer can choose the installation position of the surge suppressor 200 on the contactor 100 according to the wiring requirements. On the other hand, in the case where the external wiring of the main circuit blocks the wiring port of the control circuit and the wiring port of the surge suppressor 200, assuming that the surge suppressor 200 has been installed on the contactor 100, the surge suppressor 200 installed on the contactor 100 can be removed from the contactor 100. Then, the power cord is electrically connected to the wiring lug 220 of the removed surge suppressor 200. After that, the wiring lug 220 of the surge suppressor 200 connected to the power cord is extended into the coil terminal to realize the electrical connection between the wiring lug 220 and the control coil. In other words, even if the above-mentioned wiring port is blocked, the present application can also realize the access of the power cord, so that the convenience of wiring can be improved.

[0075] It should be noted that, in the case where the external wiring of the main circuit does not block the wiring port of the control circuit and the wiring port of the surge suppressor 200, assuming that the surge suppressor 200 is not installed on the contactor 100, the power line can be electrically connected to the wiring piece 220 first, and then the surge suppressor 200 is installed on the contactor 100, and the wiring piece 220 is electrically connected to the control coil. Of course, the surge suppressor 200 can also be installed on the contactor 100 first, and the wiring piece 220 is electrically connected to the control coil, and then the power line is electrically connected to the wiring piece 220. The embodiment of the present application does not limit the order of the above wiring.

[0076] Figure 6 This is a schematic diagram of the structure of a seat body 212 provided in an embodiment of the present application. Figure 7 for Figure 6 The enlarged view of part B in the figure. Figure 8 A schematic diagram of the structure of a wiring sheet 220 provided in an embodiment of the present application, combined with Figures 5 to 8 The surge suppressor 200 further includes a seat 212. In some embodiments, the seat 212 is provided with a mounting groove 2121, and a through hole K is provided on the groove wall of the mounting groove 2121. The wiring piece 220 includes a main body 221 and an extension 222 connected to each other. Part of the main body 221 is located in the mounting groove 2121, and one end of the extension 222 away from the main body 221 passes through the through hole K and is located outside the mounting groove 2121. The surge module is located in the seat 212 and outside the mounting groove 2121, and the wiring pin 230 is welded to the extension 222 outside the mounting groove 2121.

[0077] The seat body 212 is a part of the aforementioned mounting shell 210. In addition to the mounting groove 2121, the seat body 212 also includes a cavity for accommodating the surge module, and the mounting groove 2121 is communicated with the cavity.

[0078] like Figure 7 As shown, the mounting groove 2121 includes a first groove wall B1, which is a groove wall on one side of the mounting groove 2121 close to the cavity, and a through hole K is provided on the first groove wall B1. The through hole K can be a blind hole or a through hole. The through hole K can be a round hole or a square hole, etc., which is not limited in the embodiment of the present application.

[0079] The main body 221 and the extension 222 may both be plate-shaped. The main body 221 located in the mounting groove 2121 is used to be electrically connected to the power line, and the main body 221 located outside the mounting groove 2121 is used to be electrically connected to the control coil.

[0080] In this embodiment, the end of the extension part 222 away from the main body part 221 passes through the through hole K and is located outside the mounting groove 2121, so that the part of the wiring piece 220 that is used for electrical connection with the wiring pin 230 can be led to the outside of the mounting groove 2121, so that the wiring pin 230 can be welded to the extension part 222 outside the mounting groove 2121. In this way, the wiring pin 230 does not need to extend into the mounting groove 2121, and does not need to be crimped together with the power line between the tile washer screw 240 and the wiring piece 220, which effectively reduces the possibility of unreliable wiring caused by double wiring of the wiring pin 230 and the power line.

[0081] Combination Figure 5 and Figure 8 In some embodiments, the extension portion 222 may be provided with a receiving groove 2221 , and the connection pin 230 is partially located in the receiving groove 2221 , and the connection pin 230 located in the receiving groove 2221 is welded to the groove wall of the receiving groove 2221 .

[0082] One end of the connection pin 230 close to the connection piece 220 may be located in the receiving groove 2221 .

[0083] The extension portion 222 is provided with a receiving groove 2221 for accommodating the terminal pin 230, so that the groove wall in the receiving groove 2221 close to the terminal pin 230 can be used for welding with the terminal pin 230. Compared with the terminal piece 220 without the receiving groove 2221, the area of ​​the part of the terminal piece 220 used for welding with the terminal pin 230 is increased, thereby facilitating the improvement of the reliability of the electrical connection between the terminal piece 220 and the terminal pin 230.

[0084] Please continue to refer to Figures 6 to 8 In some embodiments, the groove wall of the installation groove 2121 may be provided with a boss 2122, and the position of the body 221 opposite to the boss 2122 may be provided with a limiting groove 2211, and the boss 2122 is located in the limiting groove 2211. Alternatively, the groove wall of the installation groove 2121 may be provided with a limiting groove 2211, and the position of the body 221 opposite to the limiting groove 2211 may be provided with a boss 2122, and the boss 2122 is located in the limiting groove 2211.

[0085] like Figure 7 As shown, the installation groove 2121 also includes a second groove wall B2, and the second groove wall B2 is located opposite to the first groove wall B1. Figure 8 As shown, the main body 221 includes a first side wall 2212 and a second side wall 2213 that are opposite to each other. The first side wall 2212 and the first groove wall B1 are located on the same side, and the second side wall 2213 and the second groove wall B2 are located on the same side.

[0086] When the boss 2122 is arranged on the groove wall of the installation groove 2121 and the limiting groove 2211 is arranged on the main body 221, the boss 2122 can be arranged on at least one of the first groove wall B1 and the second groove wall B2, and the limiting groove 2211 can be arranged on at least one of the first side wall 2212 and the second side wall 2213, as long as the boss 2122 on at least one side can be located in the corresponding limiting groove 2211.

[0087] When the boss 2122 is provided on the main body 221 and the limiting groove 2211 is provided on the groove wall of the installation groove 2121, the boss 2122 can be provided on at least one of the first side wall 2212 and the second side wall 2213, and the limiting groove 2211 can be provided on at least one of the first groove wall B1 and the second groove wall B2, as long as at least one side of the boss 2122 can be located in the corresponding limiting groove 2211.

[0088] Through the above solution, the boss 2122 is located in the limiting groove 2211, which can limit the possibility of the terminal piece 220 moving relative to the base 212 in the wiring direction of the power line. In the case that the terminal piece 220 is not easy to move relative to the base 212, the electrical connection reliability between the terminal piece 220 and the power line, and between the terminal piece 220 and the control coil is high. Among them, the arrangement direction of the surge suppressor 200 and the contactor 100 is consistent with the wiring direction of the power line.

[0089] Furthermore, the side wall of the connecting piece 220 abuts against the groove wall of the mounting groove 2121 .

[0090] Combination Figure 7 and Figure 8 The first side wall 2212 may be interference fit with the first groove wall B1, and / or the second side wall 2213 may be interference fit with the second groove wall B2.

[0091] Such a configuration can increase the friction between the side wall of the terminal block 220 and the groove wall of the mounting groove 2121, further reducing the possibility of movement of the terminal block 220 relative to the seat body 212, thereby facilitating improving the reliability of the electrical connection between the terminal block 220 and the power line, and between the terminal block 220 and the control coil.

[0092] Fig. 9This is a structural diagram of a cover provided in an embodiment of the present application. Please continue to refer to Figures 5 to 9 In some embodiments, as Figures 5 to 9 As shown, the surge suppressor 200 may further include a cover 213, which is detachably connected to the base 212. The cover 213 and the base 212 are connected to form an installation cavity, and the surge module and part of the wiring module are located in the installation cavity.

[0093] The cover 213 is another part of the aforementioned mounting case 210 .

[0094] The detachable connection between the cover 213 and the base 212 can be achieved by: one of the cover 213 and the base 212 is provided with a buckle 2131, and the other of the cover 213 and the base 212 is provided with a slot 2123, and the buckle 2131 is matched with the slot 2123. Alternatively, one of the cover 213 and the base 212 is provided with an insert, and the other of the cover 213 and the base 212 is provided with a slot, and the insert is matched with the slot.

[0095] The number of buckles 2131 and the number of slots 2123 are the same and there can be multiple buckles 2131, and the multiple buckles 2131 correspond to the multiple slots 2123 one by one, and each buckle 2131 can be adapted to the corresponding slot 2123. Similarly, the number of inserting strips and the number of slots are the same and there can be multiple buckles 2131 and the number of slots correspond to each other one by one, and each inserting strip can be adapted to the corresponding slot.

[0096] Figure 5 and Figure 7 The embodiment shows the implementation method of the buckle 2131 and the slot 2123 matching each other, and Figure 5 and Figure 7 In the embodiment, the buckle 2131 is disposed on the cover body 213 , and the slot 2123 is disposed on the base body 212 . Figure 5 and Figure 7 The implementation shown does not constitute a limitation on the embodiments of the present application.

[0097] The installation cavity includes the aforementioned installation groove 2121 for accommodating a portion of the body portion 221 and the aforementioned cavity for accommodating the surge module.

[0098] After the cover 213 and the base 212 are connected, a mounting cavity is formed. The surge module and part of the wiring module are located in the mounting cavity, so that the cover 213 and the base 212 can protect the surge module and part of the wiring module, and reduce the possibility of damage caused by the surge module and part of the wiring module being exposed. In addition, the cover 213 and the base 212 are detachably connected. When the structural parts such as the surge module or the wiring module located in the mounting cavity are damaged, the cover 213 can be easily removed from the base 212 to replace the damaged structural parts.

[0099] Please continue to refer to Figure 4 , Figure 5 and Fig. 9 The cover body 213 includes a crimping plate 2132 , and the crimping plate 2132 at least partially presses against the wiring piece 220 .

[0100] The pressing plate 2132 is located on a side of the cover 213 close to the contactor 100 .

[0101] The crimping plate 2132 at least partially presses against the connecting piece 220, so that the crimping plate 2132 can limit the possibility of the connecting piece 220 moving relative to the base 212 in the connection direction of the power line. From another aspect, the reliability of the electrical connection between the connecting piece 220 and the power line, and between the connecting piece 220 and the control coil is improved.

[0102] In addition, the crimping plate 2132 can limit the extent to which the power cord extends into the mounting slot 2121, so that the power cord can only extend into the mounting slot 2121 at most, and will not extend into the contactor 100 without restriction, which is convenient for guiding operators to connect the power cord.

Claims

1. A surge suppressor, applied to a contactor, the contactor comprising a control coil, characterized in that: The surge suppressor comprises: A wiring module, comprising a wiring piece, wherein the wiring piece is used to be electrically connected to a power source and a control coil; A surge module, comprising a connection pin, wherein the connection pin is welded to the connection piece; The surge suppressor can be connected to the contactor so that the terminal piece extends into the contactor and is electrically connected to the control coil; The surge suppressor is also removable from the contactor such that the lug is disconnected from the coil.

2. The surge suppressor according to claim 1, characterized in that: The surge suppressor further comprises a seat body, the seat body is provided with a mounting groove, and the groove wall of the mounting groove is provided with a through hole; The wiring piece comprises a main body portion and an extension portion connected to each other, a part of the main body portion is located in the mounting groove, and an end of the extension portion away from the main body portion passes through the through hole and is located outside the mounting groove; The surge module is located in the seat body and outside the mounting groove, and the connection pin is welded to the extension portion outside the mounting groove.

3. The surge suppressor according to claim 2, characterized in that: The extension portion is provided with a receiving groove, the connection pin portion is located in the receiving groove, and the connection pin located in the receiving groove is welded to the groove wall of the receiving groove.

4. The surge suppressor according to claim 2, characterized in that: A boss is provided on the groove wall of the installation groove, a limiting groove is provided at a position of the main body portion opposite to the boss, and the boss is located in the limiting groove; or, A limiting groove is provided on the groove wall of the installation groove, and a boss is provided at a position of the main body portion opposite to the limiting groove, and the boss is located in the limiting groove.

5. The surge suppressor according to any one of claims 2 to 4, characterized in that: The side wall of the connecting piece abuts against the groove wall of the mounting groove.

6. The surge suppressor according to claim 2, characterized in that: The surge suppressor further comprises a cover body, and the cover body is detachably connected to the base body; The cover body and the base body are connected to form a mounting cavity, and the surge module and part of the wiring module are located in the mounting cavity.

7. The surge suppressor according to claim 6, characterized in that: One of the cover body and the base body is provided with a buckle, and the other of the cover body and the base body is provided with a slot, and the buckle is matched with the slot; or, One of the cover body and the base body is provided with an inserting strip, and the other of the cover body and the base body is provided with a slot, and the inserting strip is matched with the slot.

8. The surge suppressor according to claim 6, characterized in that: The cover body includes a pressing plate, and the pressing plate at least partially presses against the wiring piece.

9. A contactor system, characterized in that: It comprises a contactor and a surge suppressor as claimed in any one of claims 1 to 8, wherein the surge suppressor is detachably connected to the contactor.

10. The contactor system according to claim 9, characterized in that The contactor comprises a housing; When the surge suppressor includes a mounting shell, one of the shell and the mounting shell is provided with a slot structure, and the other of the shell and the mounting shell is provided with a buckle structure, and the buckle structure is buckled with the slot structure to connect the surge suppressor to the contactor.

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