A wire-to-board connector

Abstract

The utility model belongs to the connector technical field, a wire to board connector belongs to connector technical field. The utility model discloses the design of first conductive terminal and U type second conductive terminal of double -deck metal right angle structure has realized the up and down vertical plug -in function of wire to board connector, and the riveting pressure assembly of conductive terminal group is on the connecting seat, and this structure design effectively reduces the overall volume of connector, satisfies the demand of product miniaturization, the design of above -mentioned conductive terminal group can bear 20A current, realizes the heavy current transmission function of wire to board connector, in addition, the vertical plug -in place of connector is connected through the conductive terminal group and is clamped, and the contact surface is metal material, thereby prolongs the plug -in service life of wire to board connector.

Description

Technical Field

[0001] This utility model relates to a connector, and more particularly to a small-pitch wire-to-board connector. Background Technology

[0002] Wire-to-board connectors (WTBs) enable electrical connections between power lines, signal lines, etc., primarily for transmitting power and signals, serving as connectors, converters, and controllers.

[0003] Existing small-pitch WTB connectors are limited by the conductor cross-sectional area, resulting in weak current carrying capacity, with rated current generally below 5A. Generally, the terminal cross-sectional area is directly proportional to the current carrying capacity; the requirement for small pitch leads to insufficient conductor cross-sectional area, resulting in insufficient current carrying capacity.

[0004] Furthermore, most existing small-pitch wire-to-board connectors are designed for lateral insertion and removal, requiring sufficient space for insertion and removal travel, making them unsuitable for compact devices. In summary, current small-pitch connectors cannot meet the demands of small size and high current handling.

[0005] In view of the above, this utility model proposes a wire-to-board connector. Utility Model Content

[0006] The purpose of this invention is to address the current limitations of small-pitch connectors in meeting the requirements of small size and high current. This invention discloses a new WTB structure that achieves a small size while meeting the current carrying capacity of 20A.

[0007] The technical solution adopted in this utility model is:

[0008] A wire-to-board connector includes a first connector base, a second connector base, a first conductive terminal, a second conductive terminal, a first signal terminal, and a second signal terminal;

[0009] The first connector is provided with a first conductive terminal slot for fixing a first conductive terminal, and the central area of ​​the first connector is provided with a first signal terminal slot for fixing a first signal terminal.

[0010] The second connector has a bottom wall, a side wall, and a top wall. The top wall has a second signal terminal slot for fixing a second signal terminal in the central area, and a second conductive terminal slot for fixing a second conductive terminal is provided at least one of the positions on the side wall and the top wall.

[0011] The first conductive terminal is generally a double-layer metal right-angle structure, including a transverse covering and fixing part, a longitudinal fitting part, and a wiring port extending from the longitudinal fitting part at the tail.

[0012] The first conductive terminal has a locking protrusion on its outer side, and the locking protrusion is respectively disposed on the outer side of the transverse covering and fixing part and the longitudinal fitting part;

[0013] The second conductive terminal is provided with a slot portion that is adapted to the slot protrusion;

[0014] At least a portion of the contact surface of the locking protrusion and at least a portion of the contact surface of the slot are continuous curved surfaces. The locking protrusion and the slot are connected by the shape matching of the continuous curved surfaces, so that the first connecting seat and the second connecting seat are vertically engaged and fixed along the thickness direction.

[0015] As a further improvement of this utility model, after the first connecting seat and the second connecting seat are engaged, the two are basically in the same plane in the thickness direction.

[0016] As a further improvement of this utility model, the inner side of the transverse covering and fixing part forms an open double-layer edge-wrapping structure, the transverse covering and fixing part covers and wraps the two adjacent apex corners of the top of the first connecting seat in the thickness direction and the adjacent part of the surface of the apex corners; and the thickness direction of the two ends of the top of the first connecting seat is provided with a drop, which is the thickness of the first conductive terminal.

[0017] As a further improvement of this utility model, the longitudinal fitting part also includes a closed double-layer structure that pinches together from the outside to the inside and extends laterally and vertically, and the closed double-layer structure is fitted and fixed with the side of the first connecting seat.

[0018] As a further improvement of this utility model, the second conductive terminal is roughly a U-shaped structure with one long side and one short side. The short side is connected to the first terminal, and the long side of the second conductive terminal extends out of the second terminal slot and connects to the circuit board. A break groove is provided vertically in the middle of the short side. When it engages with the first conductive terminal, the conductors on both sides of the break groove are engaged and in contact with the first conductive terminal. Double barbs are also provided on both sides of the long side for strengthening and fixing with the second connecting seat.

[0019] As a further improvement of this utility model, the first conductive terminal groove includes an open groove disposed at the middle position of the thickness direction on both sides of the first connector, the longitudinal fitting part is embedded in the open groove, and the wiring port extends out from the open groove and is fixedly connected to the power line.

[0020] As a further improvement of this utility model, a latch is provided on the upper inner side of the longitudinal fitting part, and a slot formed by two partition strips is provided at the upper end of the opening groove. The latch is reinforcedly connected to the first connecting seat through the slot.

[0021] As a further improvement of this utility model, the edge-wrapping structure terminates at the corner position, and a positioning notch is provided at the corner position of the first conductive terminal for positioning and connecting with the first connecting seat.

[0022] As a further improvement of this utility model, the front end of the transverse covering and fixing part is provided with a plug-in part; and the first connecting seat is provided with a fixing groove that cooperates with the plug-in part at the connection point with the transverse covering and fixing part.

[0023] As a further improvement of this utility model, the second conductive terminal groove is composed of a first through hole and a second through hole, the second through hole being located inside the second connector; and an elongated protrusion is also provided on the inner wall of the second through hole, which forms a limiting and fixing with the inner side of the slot of the second conductive terminal.

[0024] As a further improvement of this utility model, the front end of the first signal terminal is provided with a clamping contact part that is clamped and connected to the second signal terminal, the rear end is provided with a crimping fixing part that is crimped with the signal line, and the back is provided with barbs that form a limiting position with the groove of the first signal terminal.

[0025] As a further improvement of this utility model, the second signal terminal is provided with a thinned portion for quick connection with the first signal terminal, and a barb extending out of the second signal terminal slot to connect with the circuit board.

[0026] As a further improvement of this utility model, the tail end of the first connecting seat is provided with a limiting arm and an end stop block formed by the lateral extension of the tail end of the side wall of the second connecting seat, which mutually limit and fix each other.

[0027] Compared with the prior art, the beneficial effects of the wire-to-board connector provided by this utility model are as follows: Through the innovative design of the first conductive terminal, this utility model enables the wire-to-board connector to achieve vertical insertion; and because the first conductive terminal is riveted and assembled at the top of the first connector base, the combination of the two reduces the connector volume, meeting the requirement for a small size in wire-to-board connector products; the design of the aforementioned conductive terminal group can carry a current of 20A, realizing the high-current function of the wire-to-board connector; furthermore, because the vertical insertion point of the wire-to-board connector of this utility model is a conductive terminal group snap-fit ​​connection with a metal contact surface, the insertion life of the wire-to-board connector can be extended. Attached Figure Description

[0028] Figure 1 This is an exploded perspective view of a wire-to-board connector according to the present invention.

[0029] Figure 2 This is a schematic diagram of the structure of the first conductive terminal of a wire-to-board connector according to the present invention;

[0030] Figure 3This is a schematic diagram of the structure of the second conductive terminal of a wire-to-board connector according to the present invention;

[0031] Figure 4 This is a schematic diagram of the first connecting seat structure of a wire-to-board connector according to the present invention;

[0032] Figure 5 This is a schematic diagram of the second connecting seat structure of a wire-to-board connector according to the present invention;

[0033] Figure 6 This is a perspective view of the first connecting seat and terminal assembly of a wire-to-board connector according to the present invention;

[0034] Figure 7 This is a perspective view of the second connector and terminal assembly of a wire-to-board connector according to the present invention.

[0035] Figure 8 This is a schematic diagram of the overall structure of a wire-to-board connector according to the present invention;

[0036] The components represented by each number in the attached diagram are explained below:

[0037] 1-First connecting seat, 101-First conductive terminal slot, 1011-Opening groove, 1012-Fixing slot; 102-First signal terminal slot, 103-Limiting arm

[0038] 2-Second connecting seat, 201-Second conductive terminal slot, 2011-First through hole, 2012-Second through hole, 2012a-Long strip protrusion, 202-Second signal terminal slot, 203-Bottom wall, 204-Side wall, 205-Top wall, 206-Stop block;

[0039] 3-First conductive terminal, 301-Card positioning protrusion, 302-Transverse covering and fixing part, 3021-Plug-in part, 303-Vertical fitting part, 304-Positioning notch, 305-Connecting port, 306-Card tongue;

[0040] 4-Second conductive terminal, 401-Slot portion, 402-Disconnect groove, 403-Double-layer barbs;

[0041] 5-First signal terminal, 501-Clamping contact, 502-Crimping fixing part, 503-Barb;

[0042] 6-Second signal terminal, 601-Thinning section, 602-Barb.

[0043] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Detailed Implementation

[0045] like Figure 1 As shown in the figure, the present invention provides a wire-to-board connector, comprising a first connector 1, a second connector 2, a first conductive terminal 3, a second conductive terminal 4, a first signal terminal 5, and a second signal terminal 6;

[0046] like Figure 4 As shown, the first connector 1 has first conductive terminal slots 101 for fixing the first conductive terminal 3 at both ends of the top, and a first signal terminal slot 102 for fixing the first signal terminal 5 in the central area of ​​the first connector 1.

[0047] like Figure 5 As shown, the second connecting seat 2 has a bottom wall 203, a side wall 204, and a top wall 205. The top wall 205 has a second signal terminal groove 202 for fixing the second signal terminal 6 in the central area, and a second conductive terminal groove 201 for fixing the second conductive terminal 4 is provided at least in one of the side wall 204 and the top wall 205.

[0048] like Figure 2 As shown, the first conductive terminal 3 is generally a double-layer metal right-angle structure, including a transverse covering and fixing part 302, a longitudinal fitting part 303, and a wiring port 305 extending from the longitudinal fitting part 303 at the tail.

[0049] Furthermore, a locking protrusion 301 is provided on the outer side of the first conductive terminal 3, and the locking protrusion 301 is respectively provided on the outer side of the transverse covering and fixing part 302 and the longitudinal fitting part 303.

[0050] like Figure 3 As shown, the second conductive terminal 4 is provided with a slot 401 that is adapted to the slot protrusion 301;

[0051] Furthermore, at least a portion of the contact surface of the locking protrusion 301 and at least a portion of the contact surface of the slot 401 are continuous curved surfaces. The locking protrusion 301 and the slot 401 form a locking connection through the shape matching of the continuous curved surfaces, so that the first connecting seat 1 and the second connecting seat 2 are vertically locked and fixed along the thickness direction. Through the innovative design of the first conductive terminal, the wire-to-board connector can achieve vertical insertion from top to bottom, and the connector insertion part is made of metal, which greatly extends the insertion life of the wire-to-board connector.

[0052] Furthermore, after the first connector 1 and the second connector 2 are engaged, they are basically on the same plane in the thickness direction, making the wire-to-board connector structure simple and regular, which facilitates subsequent installation and connection.

[0053] like Figure 2 As shown, the first conductive terminal 3 forms an open double-layer edge-wrapping structure on the inner side of the transversely wrapped fixing part 302. The transversely wrapped fixing part 302 covers and wraps the two adjacent top corners and adjacent parts of the surface of the first connector 1 in the thickness direction. Furthermore, there is a drop in the thickness direction at both ends of the top of the first connector 1, which reduces the volume of the wire-to-board connector by riveting the first conductive terminal 3 onto the first connector 1, thus meeting the requirement for a small volume of the wire-to-board connector product.

[0054] Furthermore, the longitudinal fitting part 303 also includes a closed double-layer structure that pinches together from the outside to the middle and extends laterally and vertically, with the inner side fitting and fixed to the side of the first connecting seat 1.

[0055] like Figure 3 As shown, the second conductive terminal 4 is roughly a U-shaped structure with one long side and one short side. The short side is connected to the first terminal, and the end of the long side extends out of the second conductive terminal groove 201 and is connected to the circuit board. A disconnect groove 402 is provided vertically in the middle of the short side. When it engages with the first conductive terminal 3, the conductors on both sides of the disconnect groove 402 are engaged and in contact with the first conductive terminal 3, which increases the contact area of ​​the conductive terminal group and improves the current carrying capacity.

[0056] like Figure 6 As shown, the first conductive terminal groove 101 includes an open groove 1011 disposed at the middle position of the thickness direction on both sides of the first connector 1, the longitudinal fitting part 303 is embedded in the open groove 1011, and the wiring port 305 extends out from the open groove 1011 and is fixedly connected to the power cord.

[0057] Furthermore, a latch 306 is provided on the upper inner side of the longitudinal fitting part 303, and the latch 306 is reinforcedly connected to the first connecting seat 1.

[0058] Furthermore, two partition strips are provided at the upper end of the opening groove 1011, and a slot is formed in the middle of the partition strips, which are fixed to the latch 306.

[0059] In addition, such as Figure 2 As shown, the first conductive terminal 3's edge structure terminates at the top corner, and a positioning notch 304 is provided at the corner, which is used for positioning and connecting with the first connecting seat 1.

[0060] Furthermore, the front end of the transverse covering and fixing part 302 is provided with a plug-in part 3021; ​​and the first connecting seat 1 is provided with a fixing groove 1012 that cooperates with the plug-in part 3021 at the connection with the transverse covering and fixing part 302.

[0061] In addition, such as Figure 7As shown, the second conductive terminal groove 201 is composed of a first through hole 2011 and a second through hole 2012. The second through hole 2012 is located inside the second connector 2. Furthermore, an elongated protrusion 2012a is provided on the inner wall of the second through hole 2012, which forms a limiting and fixing with the inner side of the slot portion 101 of the second conductive terminal 4.

[0062] like Figure 1 As shown, as a further improvement of this utility model, the front end of the first signal terminal 5 is provided with a clamping contact part 501 that is clamped and connected to the second signal terminal 6, the rear end is provided with a crimping fixing part 502 that is crimped with the signal line, and the back is provided with a barb 503 that forms a limit with the groove of the first signal terminal 5.

[0063] As a further improvement of this utility model, the second signal terminal is provided with a thinned portion 601 for quick connection with the first signal terminal, and a barb 602 extending out of the second signal terminal slot and connecting to the circuit board.

[0064] The first connecting seat 1 is provided with a limiting arm 103 at its tail end, which is mutually limited and fixed to the end stop block 206 formed by the lateral extension of the side wall 204 of the second connecting seat 2. The limiting arm 103 is divided into two layers by an opening groove 1011 in the middle of both sides of the second connecting seat 2.

[0065] like Figure 5 The second connecting seat 2 structure shown further includes a double-layer groove on both sides of the first through hole 2011 of the second conductive terminal groove 201, which is mutually limited and fixed to the double-layer barbs 403 on both sides of the second conductive terminal 4.

[0066] In addition, terminal markings are provided at the intersection of the second signal terminal slot 202 and the bottom wall 203, so that the front plate-shaped part of the second signal terminal 6 can be fixed by the terminal markings after it is inserted into the second signal terminal slot 202.

[0067] like Figure 4 The structure of the first connector 1 shown is further characterized by the following: the opening at the tail end of the first signal terminal 5 corresponding to the first connector 1 is approximately square, and the interior is also approximately rectangular cavity. The upper surface of the cavity is the upper surface of the first connector 1 in the thickness direction. Above the cavity is a sloping locking platform that is disconnected on three sides but connected at the tail. The front end of the sloping locking platform can be limited and fixed with the barbs 503 provided on the back of the first signal terminal 5.

[0068] like Figure 8As shown, in the specific implementation process, the wire-to-board connector provided by this utility model is provided with 4 sets of signal terminals (4 first signal terminals 5 and 4 second signal terminals 6) and 2 sets of conductive terminals (2 first conductive terminals 3 are provided, and 1 set of second conductive terminals 4 are respectively provided on the adjacent top wall 205 and side wall 204 of the second connector 2, and are engaged with one first conductive terminal 3, so there are 4 second conductive terminals 4). The first conductive terminals 3 and the second conductive terminals are riveted to the first connector 1 and the second connector 2 respectively. The terminal 305 at the tail of the first conductive terminal 3 is soldered to the power line. The first conductive terminal 3 is connected to the second conductive terminal 4 by engaging. The long side of the second conductive terminal 4, which is U-shaped, passes through the second through hole 2012 outside the second conductive terminal groove 201 of the second connector 2 and is connected to the circuit board, thereby completing the current transmission. The crimping and fixing part 502 of the first signal terminal 5 is crimped to the signal line. The first signal terminal 5 and the second signal terminal 6 are clamped and connected. The second signal terminal 6 is soldered to the circuit board through the barb 602 at the tail, thereby completing the signal transmission. This utility model, through the innovative design of the structure and connection method of the first conductive terminal 3 and the second conductive terminal 4, achieves a 2+4 structure where the 2-pin terminal carries 20A of current and the 4-pin terminal is a signal PIN carrying 1A of current. This not only reduces the size of the wire-to-board connector but also enables it to carry 20A of current, realizing the high-current function of the wire-to-board connector. In addition, since the vertical insertion point of the connector is a conductive terminal group snap-fit ​​connection, the contact surface is made of metal. The high wear resistance, deformation resistance, and impact resistance of the metal material can extend the insertion life of the wire-to-board connector.

[0069] In the description of this utility model, it should be understood that the terms "longitudinal", "transverse", "thickness", "upper", "lower", "front", "rear", "left", "right", "back", "vertical", "horizontal", "vertical", "flat", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] The above embodiments are preferred embodiments of this utility model, but not all embodiments. Any equivalent changes to the technical solutions of this utility model made by those skilled in the art after reading this utility model specification are covered by the claims of this utility model.

Claims

1. A wire-to-board connector, comprising a first connector (1), a second connector (2), a first conductive terminal (3), a second conductive terminal (4), a first signal terminal (5), and a second signal terminal (6); Its features are, The first connector (1) is provided with a first conductive terminal groove (101) for fixing the first conductive terminal (3), and the central area of ​​the first connector (1) is also provided with a first signal terminal groove (102) for fixing the first signal terminal (5). The second connector (2) has a bottom wall (203), a side wall (204), and a top wall (205). The top wall (205) has a second signal terminal slot (202) for fixing the second signal terminal (6) in the central area. At least one of the side wall (204) and the top wall (205) has a second conductive terminal slot (201) for fixing the second conductive terminal (4). The first conductive terminal (3) is generally a double-layer metal right-angle structure, including a transverse covering and fixing part (302) and a longitudinal fitting part (303), and the tail is also provided with a wiring port (305) extending from the longitudinal fitting part (303). The first conductive terminal (3) is provided with a locking protrusion (301) on the outside. The locking protrusion (301) is respectively provided on the outside of the transverse covering fixing part (302) and the longitudinal fitting part (303); The second conductive terminal (4) is provided with a slot (401) that is adapted to the slot protrusion (301). At least a portion of the contact surface of the locking protrusion (301) and at least a portion of the contact surface of the slot (401) are continuous curved surfaces. The locking protrusion (301) and the slot (401) are connected by the shape matching of the continuous curved surfaces, so that the first connecting seat (1) and the second connecting seat (2) are vertically engaged and fixed along the thickness direction.

2. The wire-to-board connector according to claim 1, characterized in that, The inner side of the transverse covering and fixing part (302) forms an open double-layer edge-wrapping structure. The transverse covering and fixing part (302) covers and wraps the two adjacent apex corners and their adjacent surface parts of the top thickness direction of the first connecting seat (1). The thickness direction of the top two ends of the first connecting seat (1) is provided with a drop.

3. The wire-to-board connector according to claim 2, characterized in that, The longitudinal fitting part (303) also includes a closed double-layer structure that pinches together from the outside to the middle and extends laterally and vertically. The closed double-layer structure is fitted and fixed to the side of the first connecting seat (1).

4. The wire-to-board connector according to claim 1, characterized in that, The second conductive terminal (4) is roughly a U-shaped structure with one long side and one short side. The long side of the second conductive terminal (4) extends out of the second conductive terminal groove (201) and connects to the circuit board. A disconnect groove (402) is provided vertically in the middle of the short side of the second conductive terminal (4). When the second conductive terminal (4) engages with the first conductive terminal (3), the conductors on both sides of the disconnect groove (402) engage and contact with the first conductive terminal (3).

5. The wire-to-board connector according to claim 3, characterized in that, The first conductive terminal groove (101) includes an open groove (1011) disposed in the middle of the thickness direction on both sides of the first connector (1). The longitudinal fitting part (303) is embedded in the open groove (1011). The wiring port (305) extends out from the open groove (1011) and is fixedly connected to the power line.

6. The wire-to-board connector according to claim 5, characterized in that, The upper inner side of the longitudinal fitting part (303) is provided with a latch (306); the upper end of the opening groove (1011) is provided with a groove formed by two partition strips, and the latch (306) is reinforcedly connected to the first connecting seat (1) through the groove.

7. The wire-to-board connector according to claim 2, characterized in that, The edge-wrapping structure terminates at the corner position, and the first conductive terminal (3) is provided with a positioning notch (304) at the corner for positioning connection with the first connecting seat (1).

8. The wire-to-board connector according to claim 1, characterized in that, The front end of the transverse covering fixing part (302) is provided with a plug-in part (3021); and the first connecting seat (1) is provided with a fixing groove (1012) that cooperates with the plug-in part (3021) at the connection with the transverse covering fixing part (302).

9. The wire-to-board connector according to claim 1, characterized in that, The second conductive terminal groove (201) is composed of a first through hole (2011) and a second through hole (2012). The second through hole (2012) is located inside the second connecting seat (2). A long strip protrusion (2012a) is also provided on the inner wall of the second through hole (2012), which forms a limiting and fixing with the slot (401) of the second conductive terminal (4).

10. The wire-to-board connector according to any one of claims 1-9, characterized in that, The first connecting seat (1) is provided with a limiting arm (103) at its tail end, which is mutually limited and fixed to the end stop block (206) formed by the lateral extension of the side wall (204) of the second connecting seat (2).

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