A contactor

Abstract

The application provides a contactor, relates to the technical field of switches, and is used for reducing the electric connecting piece between a circuit board and a wire end and a coil in the prior art, which occupies an un-fixed space and is prone to loose connection. The contactor comprises a circuit board, a bearing frame, a first electric connecting piece, a second electric connecting piece and a third electric connecting piece. The circuit board is arranged on the bearing frame, and the bearing frame is further provided with a coil. The first electric connecting piece is arranged on a base of the contactor, and one end of the first electric connecting piece is used for electrically connecting with a control power supply. The second electric connecting piece is arranged on the bearing frame, one end of the second electric connecting piece is electrically connected with the other end of the first electric connecting piece, and the other end of the second electric connecting piece is electrically connected with the circuit board. The third electric connecting piece is arranged on the bearing frame, one end of the third electric connecting piece is electrically connected with the circuit board, and the other end of the third electric connecting piece is electrically connected with the coil.

Description

Technical Field

[0001] This application relates to the field of switch technology, specifically to a contactor. Background Technology

[0002] A contactor is a versatile switching device that can quickly disconnect or connect a circuit. This circuit refers to the main circuit connected to the contactor, which provides the necessary power to the load.

[0003] The working principle of a contactor is to control the on / off state of the main circuit through a control circuit. The control power supply is connected to the input terminal of the control circuit, rectified by the circuit board, and output as DC power to the coil. When the coil is energized, it generates a magnetic field that attracts the moving iron core, causing the contacts to close. When the control power supply is disconnected, the contacts open, thus controlling the on / off state of the main circuit.

[0004] In the existing technology, the electrical connections between the circuit board and the input terminal and the coil have inconsistent space requirements and are prone to loosening. Utility Model Content

[0005] This application provides a contactor to reduce the potential for loose connections in existing technologies where the electrical connections between the circuit board, the input terminal, and the coil occupy variable space.

[0006] To achieve the above objectives, this application provides a contactor comprising a circuit board, a support frame, a first electrical connection piece, a second electrical connection piece, and a third electrical connection piece. The circuit board is disposed on the support frame, and a coil is also disposed on the support frame. The first electrical connection piece is disposed on a base of the contactor, and one end of the first electrical connection piece is used for electrical connection to a control power supply. The second electrical connection piece is disposed on the support frame, and one end of the second electrical connection piece is electrically connected to the other end of the first electrical connection piece, and the other end of the second electrical connection piece is electrically connected to the circuit board. The third electrical connection piece is disposed on the support frame, and one end of the third electrical connection piece is electrically connected to the circuit board, and the other end of the third electrical connection piece is electrically connected to the coil.

[0007] When the above technical solution is adopted, the control power supply is electrically connected to the circuit board through the first and second electrical connecting pieces. The circuit board is electrically connected to the coil through the third electrical connecting piece, thereby realizing the electrical connection between the control power supply and the coil.

[0008] The circuit board is electrically connected to the control power supply and coils via electrical connectors. Compared to the flexible wires in existing technologies, the electrical connectors are relatively rigid and have inherent rigid support. They are not easily bent or drooped in a free state, have a fixed shape, occupy a relatively fixed amount of space, and are less prone to becoming messy or disorderly.

[0009] Meanwhile, the first electrical connector is mounted on the base, while the second and third electrical connectors are both mounted on the support frame. In other words, the first, second, and third electrical connectors are all fixed in place, preventing loosening and avoiding poor contact due to vibration, thus improving the connection stability with the circuit board and coil.

[0010] Alternatively, welding, screw connection, or crimping can be used to achieve a rigid connection between the first, second, and third electrical connecting pieces, which is not easy to loosen or break, can withstand the stress caused by mechanical vibration and thermal expansion and contraction, and can improve the structural strength.

[0011] In one possible implementation, the contactor further includes a fourth electrical connection piece, one end of which is electrically connected to the other end of the first electrical connection piece, and the other end of which is electrically connected to one end of the second electrical connection piece.

[0012] When the above technical solution is adopted, the control power supply is electrically connected to the circuit board through the first electrical connector, the fourth electrical connector, and the second electrical connector. With the positions of the control power supply terminals and the circuit board relatively fixed, the fourth electrical connector can shorten the length of the first and second electrical connectors. When the first and second electrical connectors are damaged and need to be replaced, the amount of material used can be reduced, thus helping to save costs.

[0013] In one possible implementation, the end of the fourth electrical connector for electrical connection with the first electrical connector is provided with two opposing first limiting posts, forming a first limiting space between the two first limiting posts. The end of the first electrical connector for electrical connection with the fourth electrical connector is interference-fitted into the first limiting space.

[0014] When the above technical solution is adopted, the fourth electrical connector and the first electrical connector are plugged into each other, enabling quick and convenient connection and disconnection. Simultaneously, the fourth electrical connector and the first electrical connector are detachably connected. When either the fourth or first electrical connector is damaged and needs replacement or repair, it is easy to separate the fourth and first electrical connectors for separate repair or replacement, thus reducing maintenance costs.

[0015] In one possible implementation, the end of the fourth electrical connector for electrical connection with the second electrical connector is provided with two opposing second limiting posts, forming a second limiting space between the two second limiting posts. The end of the second electrical connector for electrical connection with the fourth electrical connector is interference-fitted into the second limiting space.

[0016] When the above technical solution is adopted, the fourth electrical connector and the second electrical connector are plugged into each other, enabling quick and convenient connection and disconnection. Simultaneously, the fourth electrical connector and the second electrical connector are detachably connected. When either the fourth or second electrical connector is damaged and needs replacement or repair, it is easy to separate the fourth and second electrical connectors for separate repair or replacement, thus reducing maintenance costs.

[0017] In one possible implementation, a mounting bracket is provided on the support frame, and a receiving cavity with one end open is formed on the side of the mounting bracket away from the support frame. The mounting bracket has adjacent first cavity walls and second cavity walls. A clearance hole is formed in the first cavity wall, and a through hole is formed in the second cavity wall. The clearance hole, the through hole, and the receiving cavity are connected in pairs. One end for electrically connecting the second electrical connecting piece and the fourth electrical connecting piece extends into the receiving cavity through the clearance hole and the through hole. The second electrical connecting piece is interference-fitted into the clearance hole.

[0018] When using the above technical solution, when placing the second electrical connector on the mounting bracket, one end of the second electrical connector can be placed near the side of the second cavity wall, and then extended into the receiving cavity through the clearance hole and through hole to achieve the positioning and installation of the second electrical connector. No bolts or rivets are required; it can be installed in one step, making the operation simple and convenient, reducing assembly steps, and improving the installation efficiency of the contactor.

[0019] The second electrical connector is interference-fitted into the clearance hole. The two sides of the second electrical connector can fit tightly against the opposite walls of the clearance hole. The second electrical connector is subjected to more uniform force, which can avoid stress concentration.

[0020] Furthermore, the second electrical connector is interference-fitted with the mounting bracket, allowing it to be disassembled under certain conditions for repair or replacement, thus reducing maintenance costs.

[0021] In one possible implementation, the mounting bracket further includes a third cavity wall, which is disposed opposite to the second cavity wall, and a through first slot is formed in the third cavity wall. A first latch is provided at the end where the second electrical connecting piece and the fourth electrical connecting piece are electrically connected. The first latch cooperates with the first slot to engage the second electrical connecting piece with the mounting bracket.

[0022] When the above technical solution is adopted, the second electrical connector is installed on the mounting bracket, and the second electrical connector is interference-fitted with the clearance hole. At the same time, the second electrical connector is snapped into the mounting bracket, which can enhance the firmness of the second electrical connector on the mounting bracket.

[0023] In addition, the first buckle is located at the end where the second electrical connecting piece and the fourth electrical connecting piece are electrically connected. When the first buckle engages with the first slot, the second electrical connecting piece engages with the mounting bracket, which not only enhances the firmness of the second electrical connecting piece on the mounting bracket, but also improves the stability of the connection between the fourth electrical connecting piece and the second electrical connecting piece.

[0024] In one possible implementation, the circuit board is provided with a second slot, and the support frame is provided with a second buckle that cooperates with the second slot, so as to snap the circuit board onto the support frame.

[0025] When the above technical solution is adopted, the circuit board is snapped onto the support frame when the second buckle engages with the second slot. The circuit board snaps onto the support frame, a simple and quick operation that eliminates the need for bolts, rivets, etc., allowing for a one-step process and reducing assembly steps. Furthermore, under certain conditions, the circuit board can be removed from the support frame for repair or replacement, reducing maintenance costs.

[0026] In one possible implementation, the support frame is also provided with a boss, and the circuit board is provided with a through hole that mates with the boss.

[0027] When using the above technical solution, the boss and through hole facilitate the positioning and matching of the circuit board with the support frame, preventing the circuit board from being installed in reverse or incorrectly. At the same time, the boss extending into the through hole can improve the stability of the circuit board mounted on the support frame.

[0028] In one possible implementation, the third electrical connector is provided with ratchet teeth, and the support frame is provided with ratchet grooves that cooperate with the ratchet teeth.

[0029] When the above technical solution is adopted, the third electrical connector can be snapped onto the support frame when the ratchet and ratchet groove are engaged. The operation of installing the third electrical connector onto the support frame is simple and quick, and can be completed in one step, reducing assembly steps.

[0030] In one possible implementation, a first soldering hole is also provided on the circuit board, which mates with a second electrical connector.

[0031] When the above technical solution is adopted, the second electrical connector is soldered to the circuit board, which can improve the stability of the electrical connection between the second electrical connector and the circuit board. At the same time, the setting of the first soldering hole facilitates the matching and installation of the second electrical connector and the circuit board, which can improve the installation efficiency.

[0032] In one possible implementation, a second soldering hole is also provided on the circuit board, which cooperates with a third electrical connector.

[0033] When the above technical solution is adopted, soldering the third electrical connector to the circuit board can improve the stability of the electrical connection between the third electrical connector and the circuit board. At the same time, the provision of the second soldering hole facilitates the matching and installation of the third electrical connector to the circuit board, thereby improving installation efficiency. Attached Figure Description

[0034] Figure 1 A partial structural diagram of the contactor provided in the embodiments of this application. Figure 1 .

[0035] Figure 2 A partial structural diagram of the contactor provided in the embodiments of this application. Figure 2 .

[0036] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.

[0037] Figure 4 for Figure 2 Enlarged diagram of point B in the middle.

[0038] Figure 5 A partial structural diagram of the contactor provided in the embodiments of this application. Figure 3 .

[0039] Figure 6 for Figure 5 Enlarged diagram of point C in the middle.

[0040] Figure 7 A partial structural diagram of the contactor provided in the embodiments of this application. Figure 4 .

[0041] Figure 8 This is a schematic diagram showing the positional relationship between the support frame and the mounting frame provided in the embodiments of this application.

[0042] Figure 9 This is a schematic diagram of the circuit board structure provided in an embodiment of this application.

[0043] Figure 10 This is a schematic diagram of the structure of the third electrical connector provided in an embodiment of this application.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1-Circuit board, 11-Second slot, 12-Through hole, 13-First soldering hole, 14-Second soldering hole, 2-Support bracket,

[0046] 21-Second latch, 22-Boss, 3-First electrical connecting piece, 4-Second electrical connecting piece, 41-First latch,

[0047] 5-Third electrical connector, 51-Ratchet, 6-Fourth electrical connector, 61-First limiting post, 611-First protrusion.

[0048] 612-First recessed portion, 613-Second protrusion, 614-Second recessed portion, 62-Second limiting post, 621-Third protrusion, 7-Mounting bracket, 71-First cavity wall, 711-Allowing hole, 72-Second cavity wall, 721-Through hole, 73-Third cavity wall

[0049] 8-Base. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0052] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0053] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0054] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned 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.

[0055] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0056] A contactor is a versatile switching device that can quickly disconnect or connect a circuit. This circuit refers to the main circuit connected to the contactor, which provides the necessary power to the load.

[0057] The control power supply is connected to the input terminal of the control circuit. The input terminal is electrically connected to the circuit board through an electrical connector. The circuit board is also electrically connected to the coil through an electrical connector.

[0058] In existing technologies, electrical connections between circuit boards, input terminals, and coils generally use flexible wires. Flexible wires are soft and lack rigid support, easily bending or drooping in a free state, and occupying unpredictable space. Furthermore, due to their softness and low mechanical strength, they are easily affected by external forces, leading to loose connections.

[0059] In view of the problems existing in the above-mentioned prior art, please refer to Figures 1 to 3 As shown, this application embodiment provides a contactor, which includes a circuit board 1, a support frame 2, a first electrical connection piece 3, a second electrical connection piece 4, and a third electrical connection piece 5. The circuit board 1 is disposed on the support frame 2, and a coil is also disposed on the support frame 2.

[0060] In specific implementation, the structure and dimensions of the support frame 2, the first electrical connection piece 3, the second electrical connection piece 4, and the third electrical connection piece 5 are not specifically limited here.

[0061] The coil can be wound on the support frame 2. The method by which the circuit board 1 is mounted on the support frame 2 is not specifically limited here. Exemplarily, the circuit board 1 can be fixed to the support frame 2 by welding, riveting, or using a threaded connection structure, but of course, it is not limited to these methods.

[0062] The support frame 2 can provide positioning and support for the coil and circuit board 1, provide stable support for the coil and circuit board 1, and ensure that the coil and circuit board 1 work normally.

[0063] The first electrical connection piece 3 is disposed on the base 8 of the contactor, and one end of the first electrical connection piece 3 is used for electrical connection with the control power supply.

[0064] In practice, the first electrical connection piece 3 can be fixed to the base 8 by welding, bonding or riveting.

[0065] In practice, the end of the first electrical connector 3 used for electrical connection with the control power supply can be the input terminal of the contactor control circuit. One end of the first electrical connector 3 and the terminal of the control power supply can be fastened to the base 8 with screws.

[0066] In this way, the fixing function of the first electrical connector 3 and the electrical connection function between the first electrical connector 3 and the control power supply are achieved simultaneously.

[0067] The second electrical connection piece 4 is disposed on the support frame 2. The manner in which the second electrical connection piece 4 is disposed on the support frame 2 is not limited here, but shall be subject to the actual situation.

[0068] For example, the second electrical connection piece 4 can be welded, bonded or riveted to the support frame 2.

[0069] One end of the second electrical connector 4 is electrically connected to the other end of the first electrical connector 3, and the other end of the second electrical connector 4 is electrically connected to the circuit board 1.

[0070] The first electrical connector 3 can be directly or indirectly electrically connected to the second electrical connector 4. The connection method between the first electrical connector 3 and the second electrical connector 4, as well as the connection method between the second electrical connector 4 and the circuit board 1, is not limited here, and the specific method shall be subject to the actual situation.

[0071] The third electrical connector 5 is disposed on the support frame 2. One end of the third electrical connector 5 is electrically connected to the circuit board 1, and the other end of the third electrical connector 5 is electrically connected to the coil.

[0072] In practice, the third electrical connection piece 5 can be installed on the support frame 2 by welding, bonding or riveting, but in practice it is not limited to this.

[0073] The connection method between the third electrical connector 5 and the circuit board 1 is not specifically limited here.

[0074] For example, the third electrical connector 5 can be electrically connected to the circuit board 1 by means of plugging or riveting.

[0075] When the above technical solution is adopted, the control power supply is electrically connected to the circuit board 1 through the first electrical connecting piece 3 and the second electrical connecting piece 4. The circuit board 1 is electrically connected to the coil through the third electrical connecting piece 5, thereby realizing the electrical connection between the control power supply and the coil.

[0076] Circuit board 1 is electrically connected to the control power supply and coil via electrical connectors. Compared to the flexible wires in existing technologies, the electrical connectors are relatively rigid and have inherent rigid support. They are not easily bent or drooped in a free state, have a fixed shape, occupy a relatively fixed space, and are less prone to disorder.

[0077] Meanwhile, the first electrical connector 3 is mounted on the base 8, and the second electrical connector 4 and the third electrical connector 5 are both mounted on the support frame 2. In other words, the first electrical connector 3, the second electrical connector 4, and the third electrical connector 5 are all fixed, making it less prone to loosening and avoiding poor contact caused by vibration, thereby improving the connection stability with the circuit board 1 and the coil.

[0078] Alternatively, welding, screw connection, or crimping can be used to achieve a rigid connection between the first electrical connecting piece 3, the second electrical connecting piece 4, and the third electrical connecting piece 5. This connection is less prone to loosening or breakage, can withstand the stress caused by mechanical vibration and thermal expansion and contraction, and can improve the structural strength.

[0079] In one possible implementation, such as Figure 1 , Figure 2 , Figure 5 and Figure 7 As shown, the contactor provided in this embodiment of the application further includes a fourth electrical connecting piece 6, one end of which is electrically connected to the other end of the first electrical connecting piece 3, and the other end of which is electrically connected to one end of the second electrical connecting piece 4.

[0080] In this configuration, the control power supply is electrically connected to the circuit board 1 via the first electrical connector 3, the fourth electrical connector 6, and the second electrical connector 4. With the positions of the control power supply terminals and the circuit board 1 relatively fixed, the fourth electrical connector 6 shortens the lengths of the first electrical connector 3 and the second electrical connector 4. When the first electrical connector 3 and the second electrical connector 4 are damaged and need replacement, the amount of material used can be reduced, thus helping to save costs.

[0081] The connection method between the first electrical connector 3 and the fourth electrical connector 6, as well as the connection method between the fourth electrical connector 6 and the second electrical connector 4, are not specifically limited here and are subject to the actual situation.

[0082] The specific structure of the fourth electrical connector 6 is not specified here.

[0083] As a feasible approach, such as Figure 5 and Figure 7As shown, the fourth electrical connector 6 has two opposing first limiting posts 61 at one end for electrical connection with the first electrical connector 3, forming a first limiting space between the two first limiting posts 61. The end of the first electrical connector 3 for electrical connection with the fourth electrical connector 6 is interference-fitted into the first limiting space.

[0084] Thus, the fourth electrical connector 6 and the first electrical connector 3 are plugged into each other, allowing for quick and convenient connection and disconnection. Furthermore, the fourth electrical connector 6 and the first electrical connector 3 are detachable. When either the fourth electrical connector 6 or the first electrical connector 3 is damaged and needs replacement or repair, they can be easily separated for separate repair or replacement, reducing maintenance costs.

[0085] Combination Figure 5 and Figure 7 As shown, one of the first limiting posts 61 has a first protrusion 611 and a first recess 612 alternately arranged on the side facing the first limiting space, and the other first limiting post 61 has a second protrusion 613 and a second recess 614 alternately arranged on the side facing the first limiting space.

[0086] When the end of the first electrical connector 3 used for electrical connection with the fourth electrical connector 6 is interference-fitted into the first limiting space, the first protrusion 611 and the second protrusion 613 respectively contact the two opposing surfaces of the first electrical connector 3.

[0087] This increases the contact area between the first electrical connector 3 and the fourth electrical connector 6, improves the stability of the contact between the first electrical connector 3 and the fourth electrical connector 6, and reduces the contact resistance.

[0088] It should be noted that at the connection end of the first electrical connector 3 and the fourth electrical connector 6, the surface of the first electrical connector 3 can be perpendicular to the direction from one of the first limiting posts 61 to the other, so as to increase the contact area between the first electrical connector 3 and the fourth electrical connector 6.

[0089] In some embodiments, the end of the fourth electrical connector 6 that is electrically connected to the second electrical connector 4 is provided with two opposing second limiting posts 62, forming a second limiting space between the two second limiting posts 62. The end of the second electrical connector 4 that is electrically connected to the fourth electrical connector 6 is interference-fitted into the second limiting space.

[0090] In this configuration, the fourth electrical connector 6 and the second electrical connector 4 are plugged into each other, allowing for quick and convenient connection and disconnection. Furthermore, the fourth electrical connector 6 and the second electrical connector 4 are detachably connected. When either the fourth electrical connector 6 or the second electrical connector 4 is damaged and requires replacement or repair, it is easy to separate the fourth electrical connector 6 and the second electrical connector 4 for separate repair or replacement, thus reducing maintenance costs.

[0091] Combination Figure 5 and Figure 7 As shown, each of the second limiting posts 62 has a third protrusion 621 on the side facing the second limiting space.

[0092] When the end of the second electrical connector 4 used for electrical connection with the fourth electrical connector 6 is interference-fitted into the second limiting space, the two third protrusions 621 respectively contact the two opposing surfaces of the second electrical connector 4.

[0093] This increases the contact area between the fourth electrical connector 6 and the second electrical connector 4, improves the stability of the contact between the fourth electrical connector 6 and the second electrical connector 4, and reduces the contact resistance.

[0094] It should be noted that at the connection end of the second electrical connector 4 and the fourth electrical connector 6, the surface of the second electrical connector 4 can be perpendicular to the direction from one of the second limiting posts 62 to the other, so as to increase the contact area between the second electrical connector 4 and the fourth electrical connector 6.

[0095] In one optional approach, please combine Figure 1 , Figure 2 , Figures 4 to 6 and Figure 8 As shown, a mounting bracket 7 is provided on the support frame 2, and a receiving cavity with an open end is opened on the side of the mounting bracket 7 away from the support frame 2.

[0096] Mounting bracket 7 is mounted on the support frame 2. Mounting bracket 7 can be fixedly mounted on the support frame 2 by welding or snap-fitting. Of course, mounting bracket 7 can also be integrally formed with the support frame 2.

[0097] The specific structure of mounting bracket 7 is not limited here. In practice, mounting bracket 7 can be a cuboid structure.

[0098] Combination Figures 4 to 6 and Figure 8As shown, the mounting bracket 7 has adjacent first cavity wall 71 and second cavity wall 72. The first cavity wall 71 has a clearance hole 711, and the second cavity wall 72 has a through hole 721. The clearance hole 711, the through hole 721, and the receiving cavity are connected in pairs. Thus, one end of the second electrical connecting piece 4 that is electrically connected to the fourth electrical connecting piece 6 can be inserted into the receiving cavity through the clearance hole 711 and the through hole 721, with the second electrical connecting piece 4 interference-fitted into the clearance hole 711.

[0099] Thus, when placing the second electrical connector 4 on the mounting bracket 7, one end of the second electrical connector 4 can be placed near the side of the second cavity wall 72, and then extended into the receiving cavity through the clearance hole 711 and the through hole 721, thereby achieving the positioning and installation of the second electrical connector 4. No bolts or rivets are required; it can be done in one step, making the operation simple and convenient, reducing assembly steps, and improving the installation efficiency of the contactor.

[0100] The second electrical connector 4 is interference-fitted with the clearance hole 711. The two side surfaces of the second electrical connector 4 can be tightly fitted with the opposite two hole walls of the clearance hole 711. The second electrical connector 4 is subjected to more uniform force, which can avoid stress concentration.

[0101] Furthermore, the second electrical connector 4 is interference-fitted with the mounting bracket 7, allowing it to be disassembled under certain conditions for repair or replacement, thus reducing maintenance costs.

[0102] As an example, combined Figures 4 to 8 The mounting bracket 7 also has a third cavity wall 73, which is disposed opposite to the second cavity wall 72. A through first slot is provided on the third cavity wall 73. A first buckle 41 is provided at the end where the second electrical connecting piece 4 is electrically connected to the fourth electrical connecting piece 6. The first buckle 41 cooperates with the first slot to engage the second electrical connecting piece 4 with the mounting bracket 7.

[0103] Thus, when the second electrical connector 4 is installed on the mounting bracket 7, the second electrical connector 4 is interference-fitted with the clearance hole 711, and at the same time, the second electrical connector 4 is snapped into the mounting bracket 7, which can enhance the firmness of the second electrical connector 4 on the mounting bracket 7.

[0104] In addition, the first buckle 41 is located at the end where the second electrical connecting piece 4 and the fourth electrical connecting piece 6 are electrically connected. When the first buckle 41 cooperates with the first slot, the second electrical connecting piece 4 is engaged with the mounting bracket 7, which not only enhances the firmness of the second electrical connecting piece 4 on the mounting bracket 7, but also improves the stability of the connection between the fourth electrical connecting piece 6 and the second electrical connecting piece 4.

[0105] In specific implementation, the end of the second electrical connector 4 that is electrically connected to the fourth electrical connector 6 can extend into the receiving cavity through the clearance hole 711 and the through hole 721. The end of the fourth electrical connector 6 that is electrically connected to the second electrical connector 4 can extend into the receiving cavity through the opening end of the receiving cavity. Furthermore, the second electrical connector 4 is interference-fitted into the first limiting space, so that the fourth electrical connector 6 and the second electrical connector 4 are electrically connected.

[0106] In practice, the first snap-fit ​​41 can be formed by bending the snap-fit ​​post. Specifically, a snap-fit ​​post that mates with the first slot can be provided on the second electrical connection piece 4. After one end of the second electrical connection piece 4 is inserted into the receiving cavity and the snap-fit ​​post extends out of the receiving cavity through the first slot, the snap-fit ​​post can be bent so that the bent part snaps onto the side of the third cavity wall 73 away from the receiving cavity.

[0107] In one possible implementation, such as Figure 9 As shown, the circuit board 1 is provided with a second slot 11, and the support frame 2 is provided with a second buckle 21 that cooperates with the second slot 11, such as... Figure 8 As shown, it is used to snap the circuit board 1 onto the support frame 2.

[0108] When the second latch 21 engages with the second slot 11, the circuit board 1 is snapped onto the support frame 2. The snapping of the circuit board 1 onto the support frame 2 is simple and quick, requiring no bolts or rivets, allowing for a one-step assembly and reducing assembly steps. Furthermore, under certain conditions, the circuit board 1 can be removed from the support frame 2 for repair or replacement, reducing maintenance costs.

[0109] The number of second buckles 21 can be multiple. For example, the number of second buckles 21 can be two, three, four or more.

[0110] In the embodiments provided in this application, such as Figure 8 As shown, there are four second buckles 21.

[0111] The number of second card slots 11 is the same as the number of second buckles 21, and they correspond one-to-one. Accordingly, in the embodiment provided in this application, the number of second card slots 11 is also four, such as... Figure 9 As shown.

[0112] In practice, the second buckle 21 can be installed on the support frame 2 by welding, snap-fitting, or threaded connection. Of course, the second buckle 21 can also be integrally formed with the support frame 2.

[0113] As a feasible approach, such as Figure 8 As shown, the support frame 2 is also provided with a boss 22, and the circuit board 1 is provided with a through hole 12 that mates with the boss 22, such as... Figure 9 As shown.

[0114] Thus, the protrusion 22 and the through hole 12 facilitate the positioning and matching of the circuit board 1 and the support frame 2, preventing the circuit board 1 from being installed in reverse or incorrectly. At the same time, when the protrusion 22 extends into the through hole 12, it can improve the stability of the circuit board 1 on the support frame 2.

[0115] The number of bosses 22 can be multiple. For example, the number of bosses 22 can be two, three or more.

[0116] In the embodiments provided in this application, such as Figure 8 As shown, there are four bosses 22.

[0117] The number of through holes 12 is the same as the number of bosses 22, and they correspond one-to-one. Accordingly, in the embodiment provided in this application, the number of through holes 12 is also four, such as... Figure 9 As shown.

[0118] In practice, the boss 22 can be mounted on the support frame 2 by welding, snap-fitting, or threaded connection. Of course, the boss 22 can also be integrally formed with the support frame 2.

[0119] In one possible implementation, such as Figure 10 As shown, the third electrical connection piece 5 is provided with ratchet 51, and the support frame 2 is provided with a ratchet groove that cooperates with the ratchet 51.

[0120] When the ratchet 51 engages with the ratchet groove, the third electrical connector 5 can be snapped onto the support frame 2. The installation of the third electrical connector 5 onto the support frame 2 is simple and quick, and can be completed in one step, reducing assembly steps.

[0121] Combination Figure 3 and Figure 10 As shown, the third electrical connector 5 can be an L-shaped structure. One end of the third electrical connector 5 is electrically connected to the circuit board 1, and the other end is inserted into the ratchet groove. One end of the coil can be wound around the third electrical connector 5.

[0122] In specific implementation, it can be combined with Figure 5 and Figure 9 As shown, the circuit board 1 also has a first soldering hole 13, which cooperates with the second electrical connector 4 to make the second electrical connector 4 electrically connected to the circuit board 1.

[0123] Thus, soldering the second electrical connector 4 to the circuit board 1 improves the stability of the electrical connection between the second electrical connector 4 and the circuit board 1. At the same time, the first soldering hole 13 facilitates the matching and installation of the second electrical connector 4 and the circuit board 1, thereby improving installation efficiency.

[0124] Furthermore, it can be combined with Figure 2 and Figure 9 As shown, a second soldering hole 14 is also provided on the circuit board 1. The second soldering hole 14 cooperates with the third electrical connection piece 5, so that the third electrical connection piece 5 is electrically connected to the circuit board 1.

[0125] Thus, soldering the third electrical connector 5 to the circuit board 1 improves the stability of the electrical connection between the third electrical connector 5 and the circuit board 1. Simultaneously, the second soldering hole 14 facilitates the matching and installation of the third electrical connector 5 and the circuit board 1, improving installation efficiency.

[0126] In addition to the above, it should be noted that in the embodiments provided in this application, the number of the first electrical connecting piece 3, the second electrical connecting piece 4, the third electrical connecting piece 5, and the fourth electrical connecting piece 6 can all be two.

[0127] Among them, a first electrical connecting piece 3, a second electrical connecting piece 4, a third electrical connecting piece 5, a fourth electrical connecting piece 6, and one end of the coil correspond to each other.

[0128] Specifically, one terminal of the control power supply can be electrically connected to the circuit board 1 via a first electrical connector 3, a fourth electrical connector 6, and a second electrical connector 4. The circuit board 1 is electrically connected to one end of the coil via a third electrical connector 5 to supply power to the coil. At the same time, the other end of the coil is electrically connected to the circuit board 1 via another third electrical connector 5. The circuit board 1 is also electrically connected to the other terminal of the control power supply via another second electrical connector 4, a fourth electrical connector 6, and a first electrical connector 3, thereby forming a control circuit.

[0129] Additionally, it should be noted that please refer to the following: Figure 2 and Figure 3 As shown, the support frame 2 includes a body for winding coils, a mounting frame 7 is provided at one end of the body, and an extension is provided at the other end of the body, with a ratchet groove formed on the extension.

[0130] When one end of the third electrical connector 5 is electrically connected to the circuit board 1 and the other end is inserted into the ratchet groove, there is no overlapping area between the orthographic projection of the third electrical connector 5 on the circuit board 1 and the orthographic projection of the body on the circuit board 1.

[0131] Thus, during actual installation, the ratchet-toothed ends of the two third electrical connectors 5 can be inserted into their corresponding ratchet grooves first. Next, one end of the enameled wire is wound around one of the third electrical connectors 5. Then, the enameled wire is wound around the main body according to the grooves on the main body. After winding, the other end of the enameled wire is wound around the other third electrical connector 5. Finally, the other end of the third electrical connector 5 is soldered onto the circuit board 1.

[0132] Of course, in actual installation, one can first insert the ends of the two third electrical connectors 5 with ratchet teeth 51 into the corresponding ratchet grooves, and then wind the enameled wire around the body according to the grooves. Then, wind both ends of the enameled wire around the corresponding third electrical connectors 5. After that, solder the other end of the third electrical connector 5 to the circuit board 1.

[0133] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other spacers; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

Claims

1. A contactor characterized by, include: Circuit board; A support frame, on which the circuit board is disposed, and on which a coil is also disposed; A first electrical connection piece is disposed on the base of the contactor; one end of the first electrical connection piece is used for electrical connection with the control power supply. A second electrical connector is disposed on the support frame; one end of the second electrical connector is electrically connected to the other end of the first electrical connector; the other end of the second electrical connector is electrically connected to the circuit board. A third electrical connection piece is disposed on the support frame; One end of the third electrical connector is electrically connected to the circuit board, and the other end of the third electrical connector is electrically connected to the coil.

2. The contactor of claim 1, wherein The contactor further includes a fourth electrical connector, one end of which is electrically connected to the other end of the first electrical connector; the other end of the fourth electrical connector is electrically connected to one end of the second electrical connector.

3. The contactor of claim 2, wherein, The fourth electrical connector is provided with two opposing first limiting posts at one end for electrical connection with the first electrical connector, and a first limiting space is formed between the two first limiting posts; the first electrical connector is inserted into the first limiting space at one end for electrical connection with the fourth electrical connector.

4. The contactor according to claim 2, characterized in that, The fourth electrical connector is provided with two opposing second limiting posts at one end for electrical connection with the second electrical connector, and a second limiting space is formed between the two second limiting posts; the second electrical connector is inserted into the second limiting space at one end for electrical connection with the fourth electrical connector.

5. The contactor according to claim 2, characterized in that, The support frame is provided with a mounting bracket; the mounting bracket has an open-end receiving cavity on the side away from the support frame; the mounting bracket has an adjacent first cavity wall and a second cavity wall, the first cavity wall has a clearance hole, and the second cavity wall has a through hole; the clearance hole, the through hole, and the receiving cavity are connected in pairs, and one end of the second electrical connecting piece that is electrically connected to the fourth electrical connecting piece extends into the receiving cavity through the clearance hole and the through hole; the second electrical connecting piece is interference-fitted into the clearance hole.

6. The contactor according to claim 5, characterized in that, The mounting bracket also has a third cavity wall, which is disposed opposite to the second cavity wall. A through first slot is provided on the third cavity wall. A first buckle is provided at one end of the second electrical connecting piece that is electrically connected to the fourth electrical connecting piece. The first buckle cooperates with the first slot to engage the second electrical connecting piece with the mounting bracket.

7. The contactor according to claim 1, characterized in that, The circuit board is provided with a second slot; the support frame is provided with a second buckle that cooperates with the second slot, for attaching the circuit board to the support frame.

8. The contactor according to claim 1, characterized in that, The support frame is also provided with a boss, and the circuit board is provided with a through hole that mates with the boss.

9. The contactor according to claim 1, characterized in that, The third electrical connector is provided with ratchet teeth, and the support frame is provided with ratchet grooves that cooperate with the ratchet teeth.

10. The contactor according to claim 1, characterized in that, The circuit board also has a first soldering hole, which mates with the second electrical connection piece; and / or, The circuit board is also provided with a second welding hole, which cooperates with the third electrical connection piece.

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