A miniaturized contactor

Abstract

The present invention relates to a miniaturized contactor, comprising: a shell, the inner wall of which is provided with a plurality of abutment ribs in the circumferential direction; a base, which is arranged at the bottom of the inner side of the shell and is connected to the shell buckle in the circumferential direction through a plurality of buckles; a receiving groove is formed at the upper end of the base; an insulating plate, which is covered on the receiving groove so as to form a receiving cavity between the receiving groove and the insulating plate; a circuit board, which is fixedly installed in the receiving cavity; a double coil skeleton, which is pressed on the upper end of the insulating plate; a U-shaped yoke, which is clamped between the double coil skeleton and the insulating plate; two auxiliary lead-out pieces, which are mounted on the double coil skeleton and are used to connect the auxiliary lead-out needle and the circuit board; the above scheme makes the various components fit closely, and the circuit board is installed in the receiving cavity between the base and the insulating plate, which is not only convenient for assembly, but also can reduce the assembly volume of the components, making the contactor more miniaturized and reducing space occupation. At the same time, the auxiliary lead-out piece is formed by encapsulating the auxiliary lead-out punching piece with a plastic strip, and the structural strength is greatly improved and it is not easy to break.

Description

Technical Field

[0001] The present invention relates to the technical field of contactors, and in particular to a miniaturized contactor. Background Art

[0002] High-voltage DC contactors are widely used in new energy vehicles, charging piles, photovoltaic power generation, energy storage systems and other fields.

[0003] The auxiliary lead-out piece of the existing contactor is a paint-coated wire lead-out piece, and the pull-out strength is limited. During the assembly process, the paint is easily damaged, and the wire is easily broken to form a virtual connection.

[0004] In addition, the coil frame and the coil lead-out piece are fixed by plug-in connection. During the use of the product, vibration may cause the coil lead-out piece to fall off, thereby pulling the enameled wire body and causing the coil function to fail.

[0005] In addition, the circuit board is usually fixed to the edge of the coil enameled wire and both sides of the yoke. When the contactor is working, the current at the low-voltage end and the high-voltage end is too large. When there is leakage, the current will climb through the metal parts to the circuit board, causing the circuit board to lose its function and completely fail to work.

[0006] In addition, some fixed parts in the contactor are complicated to assemble. For example, the circuit board is usually fixed to the edge of the coil enameled wire and both sides of the iron, which will increase the volume of the contactor to a certain extent. Summary of the invention

[0007] In order to solve the above problems, the purpose of the present invention is to provide a miniaturized contactor, increase the structural strength of some components on the contactor, improve assembly convenience and assembly stability, and at the same time, install the circuit board horizontally in the cavity between the insulating plate and the base, and the insulating plate is fixedly covered on the cavity in the form of a cover plate to form a protective layer. When the contactor is working, if there is leakage, the insulating plate can effectively isolate the influence of external metal creepage on the circuit board (external current creepage causes circuit board breakdown failure), protect the circuit board, and reduce the longitudinal assembly volume to a certain extent; in addition, the rapid assembly of various components is achieved by plug-in and card-on methods, reducing the installation size between components, making the contactor more miniaturized.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0009] A miniaturized contactor, characterized in that it comprises:

[0010] The outer shell and the inner wall are provided with a plurality of abutment ribs in the circumferential direction;

[0011] The base is arranged at the bottom of the inner side of the shell and is connected to the shell through a plurality of buckles in the circumferential direction; a receiving groove is formed at the upper end of the base;

[0012] An insulating plate is covered on the receiving groove so that a receiving cavity is formed between the receiving groove and the insulating plate;

[0013] A circuit board is fixedly installed in the accommodating cavity;

[0014] The double coil frame is pressed onto the upper end of the insulating plate;

[0015] U-shaped yoke, clamped between the double coil frame and the insulating plate;

[0016] Two auxiliary lead-out sheets are mounted on the double coil frame and are used to connect the auxiliary lead-out pins and the circuit board;

[0017] The first card slots are constructed on both sides of the upper end of the receiving groove on the end edge, a card strip connected with the first card slot is formed on the insulating plate, a card block is formed on the receiving groove adjacent to the first card slot, and a second card slot adapted to the card block is formed on the insulating plate;

[0018] The double-coil skeleton comprises a winding column and an upper mounting plate and a lower mounting plate respectively formed on the upper and lower sides of the winding column, two positioning holes are longitudinally provided on one side of the lower mounting plate, and a first connecting hole is provided on the circuit board corresponding to the positioning hole; a coil lead-out plate electrically connected to the coil is provided on one side of the lower mounting plate away from the positioning hole, and the coil lead-out plate is integrally formed with the lower mounting plate;

[0019] The auxiliary lead-out plate includes an auxiliary lead-out punching plate and a plastic strip, and an assembly groove is formed on the plastic strip. Part of the auxiliary lead-out punching plate is adapted to be installed in the assembly groove, and the other part extends downward from the assembly groove and passes through the positioning hole and the first connecting hole in sequence to form a plug-in.

[0020] Preferably, an assembly frame is constructed on the bottom surface of the insulating board, the circuit board is adapted to be arranged in the assembly frame, at least two plug blocks are extended downward from the bottom surface of the insulating board, and at least two sockets are opened on the circuit board to be plugged with the plug blocks.

[0021] Preferably, at least two support platforms corresponding to the inserting blocks are provided at the bottom of the accommodating groove, and support grooves are formed on the support platforms, and the lower part of the inserting block abuts against the support grooves.

[0022] Preferably, a plurality of first reinforcing ribs are constructed on the bottom surface of the accommodating groove, and both sides of the first reinforcing ribs extend to the side walls of the accommodating groove; some of the ribs extending to the side walls of the accommodating groove are configured as supporting ribs, and the lower end of the assembly frame and the lower end of the width side of the insulating plate close to the card strip overlap the supporting ribs; the width side of the insulating plate close to the second card slot overlaps the upper end edge of the accommodating groove.

[0023] Preferably, a widthwise side of the insulating plate close to the second slot extends outward to form an extension slot adapted to the protruding portion of the circuit board, and a support block is provided in the extension slot to support the lower end of the insulating plate.

[0024] Preferably, the circumference of the upper inner wall of the positioning hole is constructed as a guiding slope.

[0025] Preferably, a first support block is provided at the lower end of the positioning hole, a second support block is provided on the bottom surface of the lower mounting plate on a side opposite to the first support block, two first docking holes and one second docking hole are provided at the upper end of the insulating plate, and the first support block and the second support block are respectively embedded in the first docking hole and the second docking hole through the U-shaped yoke.

[0026] Preferably, a second connecting hole is further provided on the circuit board, and a plurality of plug-in strips are formed on the coil lead-out plate, which longitudinally pass through the second support block and the second connecting hole to form a plug-in connection; a plurality of grounding strips are integrated on the insulating plate, and a plurality of third connecting holes are provided on the circuit board, and the lower end of the grounding strip extends downward through the third connecting hole to form a plug-in connection with the circuit board.

[0027] Preferably, both sides of the upper mounting plate extend upward to form support strips for supporting the auxiliary lead-out piece, and cutouts are provided at the front and rear ends of one side of the upper mounting plate corresponding to the positioning hole, and part of the auxiliary lead-out piece is longitudinally fitted in the cutout.

[0028] Preferably, a plurality of second reinforcing ribs are provided between the inner wall of the support bar and the upper mounting plate, and a plurality of third reinforcing ribs are provided on the upper end surface of the insulating plate; a plurality of protrusions are provided in the assembly groove, and assembly holes corresponding to the plurality of protrusions are opened on the auxiliary lead-out punch.

[0029] The present invention adopts the above technical solution and has the following beneficial effects:

[0030] 1. The shell is connected to the base by snapping, the base is connected to the insulating board by snapping, and the bottom of the double-coil skeleton is embedded in the insulating board, so that the components are closely matched. At the same time, the circuit board is installed in the accommodating cavity between the base and the insulating board, which is not only convenient for assembly, but also can reduce the assembly volume of the components, making the contactor more miniaturized and reducing space occupancy.

[0031] 2. The auxiliary lead-out piece is made of metal plate by stamping and rubber encapsulation, which has high overall strength and is not easy to break.

[0032] 3. The end of the auxiliary lead-out punching piece is plugged into the positioning hole and the connecting hole, which is easy to assemble and can make the auxiliary lead-out piece more secure during installation and use of the product without shaking, effectively preventing the lead-out piece detection function from being unstable.

[0033] 4. The double coil skeleton and the coil lead-out sheet are integrally formed, the structure is stable and reliable, and it is not easy to fall off, which can effectively prevent coil failure and reduce assembly volume.

[0034] 5. The ends of the two auxiliary lead-out pieces are connected to the plug-in strips of the coil lead-out pieces in a triangular relationship and fixed to the circuit board, which can effectively prevent the circuit board from falling off and failing.

[0035] 6. The insulating plate is fixed on the cavity in the form of a cover to form a protective layer. When there is leakage, it can effectively isolate the influence of external metal creepage on the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the three-dimensional structure of a miniaturized contactor.

[0037] Figure 2 It is a schematic diagram of the three-dimensional structure of the shell.

[0038] Figure 3 The figure is a schematic diagram of the structure inside the upper shell of a miniaturized contactor.

[0039] Figure 4 This is a schematic diagram of the local structure inside a miniaturized contactor.

[0040] Figure 5 This is a schematic diagram of the lower structure assembly in a miniaturized contactor.

[0041] Figure 6 This is a schematic diagram of the assembly between the base, insulation board and circuit board.

[0042] Figure 7 A schematic diagram of the three-dimensional structure of the base.

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of the base from another perspective.

[0044] Fig. 9 It is a schematic diagram of the assembly of the insulating board and the circuit board.

[0045] Fig.10 This is a schematic diagram of the assembly of the insulation board and the circuit board from another perspective.

[0046] Fig.11 A schematic diagram of the three-dimensional structure of the insulation board.

[0047] Fig.12 This is a schematic diagram of the three-dimensional structure of the insulation board from another perspective.

[0048] Fig.13 A schematic diagram of the three-dimensional structure of a circuit board.

[0049] Fig.14 It is a schematic diagram of the assembly of the double coil frame and the U-shaped yoke.

[0050] Fig.15 It is a schematic diagram of the assembly of the auxiliary lead-out piece and the coil frame.

[0051] Fig.16 It is a schematic diagram of the three-dimensional structure of the double-coil skeleton.

[0052] Fig.17 This is a schematic diagram of the three-dimensional structure of the double-coil skeleton from another perspective.

[0053] Fig.18 This is a schematic diagram of the coordination between the coil lead-out piece and the circuit board.

[0054] Fig.19 A schematic diagram of the three-dimensional structure of the auxiliary lead-out piece.

[0055] Fig. 20 It is a schematic diagram of the three-dimensional structure of the plastic strip.

[0056] Fig.21 A schematic diagram of the three-dimensional structure for assisting in leading out the punching sheet. DETAILED DESCRIPTION

[0057] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more, unless otherwise clearly specified.

[0060] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0062] like Figures 1 to 21 A miniaturized contactor is shown, comprising:

[0063] The outer shell 1 has a plurality of abutment ribs 2 arranged on the inner wall in the circumferential direction;

[0064] The base 3 is arranged at the bottom of the inner side of the shell 1 and is connected to the shell 1 by a plurality of buckles 4 in the circumferential direction; a receiving groove 5 is formed at the upper end of the base 3;

[0065] An insulating plate 6 is covered on the receiving groove 5 so that a receiving cavity is formed between the receiving groove 5 and the insulating plate 6;

[0066] The circuit board 7 is fixedly installed in the accommodating cavity;

[0067] The double coil frame 8 is press-fitted on the upper end of the insulating plate 6;

[0068] The U-shaped yoke 9 is clamped between the double coil frame 8 and the insulating plate 6;

[0069] Two auxiliary lead-out pieces 10 are mounted on the double coil frame 8 and are used to connect the auxiliary lead-out needles 11 and the circuit board 7;

[0070] The first clamping grooves 12 are constructed on both sides of the upper end of the receiving groove 5, and the insulating plate 6 is formed with a clamping strip 13 clamped with the first clamping groove 12. A clamping block 14 is formed on the receiving groove 5 adjacent to the first clamping groove 12, and the insulating plate 6 is formed with a second clamping groove 15 adapted to the clamping block 14;

[0071] The double coil skeleton 8 includes a winding column 16 and an upper mounting plate 17 and a lower mounting plate 18 respectively formed on the upper and lower sides of the winding column 16. Two positioning holes 19 are longitudinally provided on one side of the lower mounting plate 18, and a first connecting hole 20 is provided on the circuit board 7 corresponding to the positioning hole 19; a coil lead-out piece 21 electrically connected to the coil is provided on one side of the lower mounting plate 18 away from the positioning hole 19, and the coil lead-out piece 21 is integrally formed with the lower mounting plate 18;

[0072] The auxiliary lead-out plate 10 includes an auxiliary lead-out punching plate 22 and a plastic strip 23, and an assembly groove 24 is formed on the plastic strip 23. Part of the auxiliary lead-out punching plate 22 is adapted to be installed in the assembly groove 24, and the other part extends downward from the assembly groove 24 and passes through the positioning hole 19 and the first connecting hole 20 in sequence to form a plug-in connection.

[0073] In the above technical solution, the base is snap-connected to the shell, the insulating plate is snap-connected to the base, and the circuit board is positioned between the insulating plate and the base, so that the contactor as a whole is more miniaturized.

[0074] The auxiliary lead-out plate includes an auxiliary lead-out punching plate and a plastic strip. The auxiliary lead-out punching plate is stamped by a metal plate and then encapsulated with a plastic strip. It has high overall strength and is not easy to break. In addition, the end of the auxiliary lead-out punching plate is plugged into the positioning hole and the connecting hole, which can make the auxiliary lead-out plate more secure during installation and use of the product without shaking, effectively preventing the lead-out plate detection function from being unstable.

[0075] The coil lead-out piece is integrally formed with the lower mounting plate and is partially formed inside the lower mounting plate, which can greatly improve the connection strength between the coil lead-out piece and the coil frame. The structure is stable and reliable, and is not easy to fall off, which can effectively prevent the coil from failing.

[0076] The insulating plate is fixedly covered on the base by means of a cover plate, and a relatively closed accommodating cavity is formed between the base and the insulating plate. The circuit board is positioned in the accommodating cavity. When there is leakage, the insulating plate can effectively isolate the influence of external metal creepage on the circuit board, thereby protecting the circuit board. Specifically, the insulating plate and the base are limited by a double card slot, which can effectively prevent the insulating plate from moving left and right and downward relative to the base, and the assembly is also very convenient. In addition, the upper end of the insulating plate is pressed by a double coil skeleton, which can effectively prevent the insulating plate from moving upward, so that the entire insulating plate is stably covered on the upper end of the accommodating cavity, which plays a better role in isolating the creepage phenomenon.

[0077] Furthermore, the bottom surface of the insulating plate 6 is constructed with an assembly frame 25, and the circuit board 7 is adapted to be arranged in the assembly frame 25. At least two plug blocks 26 are extended downward from the bottom surface of the insulating plate 6, and at least two plug holes 27 are provided on the circuit board 7 to be plugged and matched with the plug blocks 26. In this technical solution, the circuit board and the insulating plate are plugged and fixed by the plug blocks and the plug holes, which can effectively prevent the circuit board from falling off longitudinally. In addition, the circuit board is adapted to be installed in the assembly frame on the bottom surface of the insulating plate, which can effectively prevent the lateral displacement of the circuit board.

[0078] Furthermore, at least two support platforms 28 corresponding to the inserting blocks 26 are provided at the bottom of the accommodating groove 5, and support grooves 29 are provided on the support platforms 28, and the lower part of the inserting blocks 26 abuts against the support grooves 29. In this technical solution, the provision of the support platforms can improve the structural strength of the base, and at the same time, the inserting blocks abut against the support grooves, which play a better supporting role on the insulating board and improve the stability of the insulating board.

[0079] Furthermore, a plurality of first reinforcing ribs 30 are constructed on the bottom surface of the receiving groove 5, and both sides of the first reinforcing ribs 30 extend to the side walls of the receiving groove 5; the ribs partially extending to the side walls of the receiving groove 5 are configured as support ribs 31, and the lower end of the assembly frame 25 and the lower end of the wide side of the insulating plate 6 close to the clamping strip 13 overlap on the support ribs 31; the wide side of the insulating plate 6 close to the second clamping groove 15 overlaps on the upper end edge of the receiving groove 5. In this technical solution, the first reinforcing ribs can improve the structural strength of the base, and the partially constructed support ribs can support the insulating plate, further improving the stability of the insulating plate. The lower edge of the insulating plate close to the second clamping groove overlaps on the end edge of the base, which can further support the insulating plate.

[0080] Furthermore, the insulating plate 6 extends outwardly on one side in the width direction close to the second slot 15 to form an extension slot 32 adapted to the protruding portion of the circuit board 7, and a support plate 33 is provided in the extension slot 32 to support the lower end of the insulating plate 6. In this technical solution, the support plate further improves the supporting effect on the circuit board, making the setting of the insulating plate more stable.

[0081] Furthermore, the upper inner wall of the positioning hole 19 is circumferentially constructed as a guide slope 34. In this technical solution, the setting of the guide slope enables the lower end of the auxiliary lead-out punch to quickly enter the positioning hole through the guide slope after contacting the edge of the positioning hole, thereby achieving rapid assembly.

[0082] Furthermore, a first support block 35 is provided at the lower end of the positioning hole 19, a second support block 36 is provided on the bottom surface of the lower mounting plate 18 on a side opposite to the first support block 35, two first docking holes 37 and a second docking hole 38 are provided at the upper end of the insulating plate 6, and the first support block 35 and the second support block 36 are respectively embedded in the first docking hole 37 and the second docking hole 38 through the U-shaped yoke 9. In this technical solution, the cooperation between the docking holes and the support blocks can make the double coil skeleton and the U-shaped yoke stably pressed on the upper end of the insulating plate, thereby improving the assembly stability of the insulating plate.

[0083] Furthermore, the circuit board 7 is provided with a second connection hole 39, and the coil lead-out piece 21 is provided with a plurality of plug-in strips 40, which longitudinally penetrate the second support block 36 and the second connection hole 39 to form a plug-in connection; the insulating plate 6 is provided with a plurality of grounding strips 41, and the circuit board 7 is provided with a plurality of third connection holes 42, and the lower end of the grounding strip 41 extends downward through the third connection hole 42 to form a plug-in connection with the circuit board 7. In this technical solution, the two first connection holes and the three second connection holes are in a triangular position relationship, and after the plug-in strips and the auxiliary lead-out piece are plugged with the circuit board, the assembly stability of the circuit board can be improved and it is not easy to fall off; in addition, the grounding strip cooperates with the third connection hole to further improve the stability of the circuit board.

[0084] Furthermore, the two sides of the upper mounting plate 17 extend upward to form support bars 43 for supporting the auxiliary lead-out piece 10, and the upper mounting plate 17 is provided with cutouts 44 at the front and rear ends of the side corresponding to the positioning hole 19, and part of the auxiliary lead-out piece 10 is longitudinally fitted in the cutout 44. In this technical solution, the setting of the support bars can effectively support the auxiliary lead-out piece, improve the stability of the auxiliary lead-out piece to a certain extent, and prevent shaking. The auxiliary lead-out piece is partially longitudinally fitted in the cutout 16, which can provide lateral support for the auxiliary lead-out piece and prevent the auxiliary lead-out piece from extending from the outside to increase the volume of the product.

[0085] Furthermore, a plurality of second reinforcing ribs 45 are provided between the inner wall of the support bar 43 and the upper mounting plate 17, and a plurality of third reinforcing ribs 46 are provided on the upper end surface of the insulating plate 6; the assembly groove 24 is provided with a plurality of protrusions 47, and the auxiliary lead-out punching piece 22 is provided with assembly holes 48 corresponding to the plurality of protrusions 47. In this technical solution, the provision of the second reinforcing ribs improves the connection strength between the support bar and the upper mounting plate, making the overall structure of the coil skeleton more stable. The third reinforcing ribs improve the structural strength of the insulating plate, thereby improving the service life of the insulating plate and covering it more stably on the base. The cooperation of the protrusions and the assembly holes can increase the contact area between the plastic strip and the auxiliary lead-out punching piece, and enhance the connection strength between the two.

[0086] It should be noted here that in this case, the contactor is also provided with an electromagnetic system, a contact system, etc. These internal structures can refer to the internal structure of the patent with publication number CN118231189B, which can also be the internal structure of other DC contactors.

[0087] like Figure 5 As shown, the assembly structure of the auxiliary lead-out piece, coil frame, insulating plate, base and circuit board in this case is not only applicable to contactors, but can also be used on other electrical components such as relays.

[0088] In this specific embodiment, in view of the cumbersome assembly of some components in the existing contactor, the large assembly volume of the contactor, and the auxiliary lead-out piece being a paint-coated wire lead-out piece, the paint is easily damaged during the assembly process, the wire is easily pulled off to form a virtual connection, and the coil lead-out piece has the risk of falling off, and when the contactor leaks, the current will climb to the circuit board through the metal parts, causing the circuit board to lose its function and completely fail to work. The above scheme is achieved by connecting the shell with the base buckle, the base with the insulating board, the bottom of the double coil skeleton is embedded on the insulating board, and the coil lead-out piece is integrated on the coil skeleton, so that the various components fit closely, and the circuit board is installed in the accommodating cavity between the base and the insulating board. It is not only convenient to assemble, but also can reduce the assembly volume of the components, making the contactor more miniaturized and reducing space occupancy. At the same time, the auxiliary lead-out piece is formed by the auxiliary lead-out punching piece plus the plastic strip encapsulation, the structural strength is greatly improved, and it is not easy to break. The coil skeleton supports the auxiliary lead-out punching piece, and the positioning hole on the coil skeleton can cooperate with the auxiliary lead-out punching piece to prevent the auxiliary lead-out piece from shaking. The coil lead-out sheet is integrated on the coil frame and formed as one piece, so the coil lead-out sheet is not easy to fall off. In addition, the plug-in matching positions between the plug-in strip and the auxiliary lead-out punching sheets on both sides and the circuit board are arranged in a triangular shape, which can effectively prevent the circuit board from falling off and failing. In addition, the insulating plate is fixed on the base by means of a cover plate to form a protective layer, and a relatively closed accommodation cavity is formed between the base and the insulating plate. The circuit board is positioned in the accommodation cavity. When there is leakage, the insulating plate can effectively isolate the influence of external metal creepage on the circuit board, thereby protecting the circuit board.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0090] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and intent of the present invention.

Claims

1. A miniaturized contactor, characterized in that: include: The outer shell (1) has a plurality of abutment ribs (2) disposed on the inner wall in the circumferential direction; The base (3) is arranged at the bottom of the inner side of the outer shell (1) and is circumferentially connected to the outer shell (1) via a plurality of buckles (4); a receiving groove (5) is formed at the upper end of the base (3); An insulating plate (6) is disposed on the receiving groove (5) to cover the receiving groove (5) so that a receiving cavity is formed between the receiving groove (5) and the insulating plate (6); A circuit board (7) is fixedly mounted in the accommodating cavity; A double coil frame (8) is press-fitted onto the upper end of the insulating plate (6); A U-shaped yoke (9) is clamped between the double coil frame (8) and the insulating plate (6); Two auxiliary lead-out sheets (10) are mounted on the double coil frame (8) and are used to connect the auxiliary lead-out needles (11) and the circuit board (7); First clamping grooves (12) are constructed on both sides of the upper end of the accommodating groove (5) on the end edge, a clamping strip (13) clamped with the first clamping groove (12) is formed on the insulating plate (6), a clamping block (14) is formed on the accommodating groove (5) adjacent to the first clamping groove (12), and a second clamping groove (15) adapted to the clamping block (14) is formed on the insulating plate (6); The double coil skeleton (8) comprises a winding column (16) and an upper mounting plate (17) and a lower mounting plate (18) respectively formed on the upper and lower sides of the winding column (16); two positioning holes (19) are longitudinally provided on one side of the lower mounting plate (18); a first connecting hole (20) is provided on the circuit board (7) corresponding to the positioning holes (19); a coil lead-out plate (21) electrically connected to the coil is provided on a side of the lower mounting plate (18) away from the positioning holes (19); the coil lead-out plate (21) is integrally formed with the lower mounting plate (18); The auxiliary lead-out sheet (10) comprises an auxiliary lead-out punching sheet (22) and a plastic strip (23), wherein an assembly groove (24) is formed on the plastic strip (23), wherein a portion of the auxiliary lead-out punching sheet (22) is adapted to be installed in the assembly groove (24), and another portion extends downwardly out of the assembly groove (24) and passes through the positioning hole (19) and the first connection hole (20) in sequence to form an insertion connection.

2. A miniaturized contactor according to claim 1, characterized in that: The bottom surface of the insulating plate (6) is constructed with an assembly frame (25), the circuit board (7) is adapted to be arranged in the assembly frame (25), at least two plug blocks (26) are provided on the bottom surface of the insulating plate (6) extending downward, and at least two plug holes (27) are provided on the circuit board (7) to be plugged into and matched with the plug blocks (26).

3. A miniaturized contactor according to claim 2, characterized in that: At least two support platforms (28) corresponding to the insert blocks (26) are provided at the bottom of the accommodating groove (5), and a support groove (29) is provided on the support platform (28), and the lower part of the insert block (26) abuts against the support groove (29).

4. A miniaturized contactor according to claim 3, characterized in that: A plurality of first reinforcing ribs (30) are constructed on the bottom surface of the receiving groove (5), and both sides of the first reinforcing ribs (30) extend to the side walls of the receiving groove (5); a portion of the ribs extending to the side walls of the receiving groove (5) are configured as supporting ribs (31), and the lower end of the assembly frame (25) and the lower end of the widthwise side of the insulating plate (6) close to the clamping strip (13) overlap the supporting ribs (31); and the widthwise side of the insulating plate (6) close to the second clamping groove (15) overlaps the upper end edge of the receiving groove (5).

5. A miniaturized contactor according to claim 4, characterized in that: A widthwise side of the insulating plate (6) close to the second slot (15) extends outward to form an extension slot (32) adapted to fit the protruding portion of the circuit board (7), and a support plate (33) is provided in the extension slot (32) to support the lower end of the insulating plate (6).

6. A miniaturized contactor according to claim 1, characterized in that: The upper inner wall of the positioning hole (19) is constructed as a guide slope (34) in the circumferential direction.

7. A miniaturized contactor according to claim 6, characterized in that: A first support block (35) is provided at the lower end of the positioning hole (19); a second support block (36) is provided on the bottom surface of the lower mounting plate (18) on a side opposite to the first support block (35); two first docking holes (37) and a second docking hole (38) are provided at the upper end of the insulating plate (6); the first support block (35) and the second support block (36) pass through the U-shaped yoke (9) and are respectively embedded in the first docking hole (37) and the second docking hole (38).

8. A miniaturized contactor according to claim 7, characterized in that: The circuit board (7) is also provided with a second connection hole (39), and the coil lead-out plate (21) is provided with a plurality of plug-in strips (40), the plug-in strips (40) longitudinally passing through the second support block (36) and the second connection hole (39) to form a plug-in connection; the insulating plate (6) is integrated with a plurality of grounding strips (41), and the circuit board (7) is provided with a plurality of third connection holes (42), and the lower end of the grounding strip (41) extends downward through the third connection hole (42) to form a plug-in connection with the circuit board (7).

9. The miniaturized contactor according to claim 1, characterized in that: Both sides of the upper mounting plate (17) extend upward to form support bars (43) for supporting the auxiliary lead-out piece (10); a notch (44) is provided at the front and rear ends of one side of the upper mounting plate (17) corresponding to the location of the positioning hole (19); a portion of the auxiliary lead-out piece (10) is longitudinally fitted into the notch (44).

10. A miniaturized contactor according to claim 9, characterized in that: A plurality of second reinforcing ribs (45) are provided between the inner wall of the support bar (43) and the upper mounting plate (17), and a plurality of third reinforcing ribs (46) are provided on the upper end surface of the insulating plate (6); the assembly groove (24) is provided with a plurality of protrusions (47), and the auxiliary lead-out punching sheet (22) is provided with assembly holes (48) corresponding to the plurality of protrusions (47).

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