Wire end connector

Abstract

A wire end connector comprises an insulating body which is provided with a lower end face and at least one terminal cavity penetrating through the lower end face; the terminal assembly comprises a conductive piece, a conductive crown spring and a cable, the conductive piece comprises a columnar part and a flat plate part, the columnar part is provided with an upper end face and a lower end face which are opposite and a butt joint cavity penetrating through the lower end face downwards, the conductive crown spring is contained in the butt joint cavity, and the columnar part is contained and fixed in the terminal cavity of the insulating body; one end of the cable is provided with an exposed peeled core wire, and the peeled core wire is welded on the flat plate part; the flat plate part is formed by integrally extending backwards from the upper end face of the columnar part or the position close to the upper end face, the flat plate part is perpendicular to the columnar part, the peeled core wire is welded to the lower surface of the flat plate part, and therefore the peeled core wire and the columnar part are located on the lower side of the flat plate part. Compared with the prior art, the cable and the cylindrical body are located on the same side of the flat plate part in the butt joint direction, the overall height of the wire end connector can be reduced, and the purpose of a flexible connector is achieved.

Description

[Technical Field]

[0001] This invention relates to a wire connector. [Background Technology]

[0002] Chinese utility model patent CN216850571U discloses a cable connector for transmitting power. The cable connector includes a housing, a metal connector, conductive terminals, and cables. The housing has a mating direction, and the cables are connected to the metal connector on the top of the housing. It can be seen that the lower half of the metal connector is cylindrical with a downward through hole. A crown spring terminal is housed within the hole of the metal connector. A flat cable connection portion extends integrally upward from the upper part of the metal connector. Two cables are arranged vertically and fixed to the cable connection portion. The cable connection portion is vertical, and the two cables are arranged vertically, which necessarily results in a larger size of the metal connector in the vertical direction. From the mating direction, this increases the overall size of the cable connector in the mating direction.

[0003] Therefore, it is indeed necessary to provide a wire-end connector that conforms to miniaturization to solve the above problems. [Summary of the Invention]

[0004] The technical problem to be solved by the present invention is to provide a clever type of wire end connector.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wire-end connector, comprising: an insulating body having a lower end face and at least one terminal cavity penetrating the lower end face; and at least one terminal assembly, each terminal assembly comprising a conductive element, a conductive crown spring, and a cable, the conductive element comprising a columnar portion and a flat portion, the columnar portion having opposing upper and lower end faces and a mating cavity penetrating downward through the lower end face, the conductive crown spring being received in the mating cavity, the columnar portion being received and fixed in the terminal cavity of the insulating body, one end of the cable having an exposed stripped core wire, the stripped core wire being welded to the flat portion; wherein, the flat portion is integrally formed extending rearward from or near the upper end face of the columnar portion, and the flat portion is perpendicular to the columnar portion, the stripped core wire being welded to the lower surface of the flat portion, thus, the stripped core wire and the columnar portion are located below the flat portion.

[0006] Compared with the prior art, the cable and column of the present invention are located on the same side of the flat plate along the mating direction, which can reduce the overall height of the wire end connector and achieve the purpose of a compact connector. [Attached Image Description]

[0007] Figure 1 This is a perspective view of the electrical connector assembly of the present invention, wherein two connectors are in a mating state.

[0008] Figure 2 yes Figure 1 A three-dimensional view of an electrical connector assembly, in which two connectors are separated from each other.

[0009] Figure 3 yes Figure 2 A three-dimensional view from another angle.

[0010] Figure 4 yes Figure 3 Exploded 3D view of the connector at the middle plate end.

[0011] Figure 5 yes Figure 2 Exploded 3D view of the center line connector.

[0012] Figure 6 yes Figure 5 A further breakdown from another angle, a three-dimensional exploded view.

[0013] Figure 7 yes Figure 6 3D exploded view of the middle terminal assembly.

[0014] Figure 8 yes Figure 6 A perspective view of the middle terminal assembly, in which the metal sleeve has been removed.

[0015] Figure 9 yes Figure 2 A three-dimensional view along the dashed line AA in the middle.

[0016] [Component Symbol Explanation]

[0017] Insulation body 10, stripped core wire 321

[0018] Wire connector 100, metal sleeve 33

[0019] Lower end face 11, upper cover 40

[0020] Terminal cavity 12 side edge 41

[0021] 13 holding ribs, 50 insulating bases

[0022] Locking arm 14, base 51

[0023] Terminal assembly 20A, mating frame 52

[0024] Conductive component 20 Vertical wall 521

[0025] Board connector 200, mating cavity 53

[0026] Columnar part 21, Locking recess 54

[0027] Lower end surface 211 and holding head 541

[0028] Docking cavity 213 and fixing hole 55

[0029] Peripheral surface 214 and interference rib 551

[0030] Holding groove 215 and positioning column 56

[0031] Flat plate part 22 and columnar terminal 60

[0032] Lower surface 221 and fixing part 61

[0033] Conductive crown spring 31 and docking part 62

[0034] Cable 32 and welding part 63

Specific implementation manner

[0035] Refer Figure 1-3 As shown, the present invention is a power connector combination for transmitting power, which includes a wire-end connector 100 and a board-end connector 200. The two connectors are docked with each other. The other end of the wire connector 100 can be connected to a copper bar connector (not shown) to transmit a large current and can be used on a rack-mounted server. The board-end connector 200 is installed on the circuit board, and the wire-end connector 100 is assembled downward into the board-end connector 200. Therefore, for the convenience of description, the docking direction is defined as the downward direction, that is Figure 1 the position where the connectors are placed in the figure. In other placement forms of the board-end connector, the docking direction of the wire-end connector is defined as downward to conform to the consistent description.

[0036] Refer Figure 2-4 As shown, the board-end connector 200 includes an insulating seat body 50 and two columnar terminals 60. The insulating seat body 50 includes a base 51 and a docking frame 52 extending upward from the base. The docking frame is composed of four vertical walls, and a docking cavity 53 is formed therein. One of the vertical walls 521 protrudes forward locally to form a locking recess 54, and a holding head 541 is provided on the inner wall surface of the locking recess 54. Combine Figure 6, the cable connector 200 is provided with a locking arm 14 integrally formed on the front surface of the insulating body 10. The locking arm 14 is inserted into the locking recess 54, and the locking head 541 is snapped into the concave surface of the locking arm. One half (the higher half) of the docking frame 52 is higher than the other half (the lower half). Thus, after docking, the wire-end connector 100 extends from the lower half, thereby reducing the overall height after the two connectors are docked. The base 51 is provided with two fixing holes 55. The columnar terminal 60 includes a fixing portion 61, a docking portion 62, and a welding portion 63. The fixing portion 61 is fixed in the fixing hole 55, and the docking portion 62 protrudes into the docking cavity 53. A plurality of interference ribs 551 are provided on the inner circumferential surface of the fixing hole for interference fit fixing with the fixing portion. The bottom surface of the base is provided with positioning columns 56 extending downward.

[0037] See Figure 5-6 , the wire-end connector 100 includes an insulating body 10, two terminal assemblies 20A, and an upper cover 40. The insulating body 10 is provided with a lower end surface 11 and two terminal cavities 12 penetrating the lower end surface 11. The insulating body 10 is generally in an inverted L shape, and its upper end surface is open, facilitating the downward assembly of the terminal assembly 20A into the terminal cavity 12, and the cable 32 of the terminal assembly extends backward.

[0038] See Figure 7-8 , each terminal assembly 20A includes a conductive member 20, a conductive crown spring 31, and a cable 32. The conductive member 20 includes a columnar portion 21 and a flat plate portion 22. The columnar portion 21 is provided with an upper end surface (not labeled) and a lower end surface 211 opposite to each other, and a docking cavity 213 penetrating the lower end surface 211 downward. The flat plate portion 22 extends integrally backward from the upper end surface of the columnar portion 21, and the flat plate portion 22 is perpendicular to the columnar portion 21. In other embodiments, the flat plate portion may also extend integrally backward from a position adjacent to the upper end surface. The conductive crown spring 31 is accommodated in the docking cavity 213. One end of the cable 32 has an exposed stripped core wire 321, and the stripped core wire 321 is welded to the flat plate portion 22. In the present invention, the stripped core wire 321 is welded to the lower surface 221 of the flat plate portion 22. Thus, the stripped core wire 321 and the columnar portion 21 are located on the lower side of the flat plate portion 22, that is, the dimensions occupied by the columnar portion 21 and the cable 32 in the up-down direction / docking direction are smaller, thereby reducing the overall height of the wire-end connector. The stripped core wire 321 and the flat plate portion 22 are fixed by ultrasonic welding. In this embodiment, four cables 32 are arranged together, and the four cylindrical stripped core wires 321 are melted together by ultrasonic waves and a limiting setting, and thus are connected to the flat plate portion 22. The flat plate portion and the块状 stripped core wire 321 are further covered with a metal sleeve 33 outside. See Figure 3As shown, two terminal assemblies 20A are arranged side by side left and right. The rear end of each terminal assembly 20A includes four cables 32 for carrying power transmission of up to 200 amperes. The cables 32 are arranged in two rows, that is, in a two-by-two matrix arrangement. Similarly, the other terminal assembly is arranged in the same way. Thus, the two terminal assemblies 20A are arranged as reasonably as possible to reduce the size of the wire-end connector in the left-right direction and the up-down direction.

[0039] Refer to Figure 6-9 , the columnar part 21 is received and fixed in the terminal cavity 12 of the insulating body. The columnar part 21 has a circumferential surface 214 between its upper and lower end faces. Two latching grooves 215 are provided on the circumferential surface of the columnar part near the lower end face. The insulating body is provided with corresponding latching ribs 13 at its terminal cavity 12. The latching ribs protrude into the latching grooves 215. Figure 9 It can be clearly seen. In this embodiment, the latching grooves and the flat plate part are parallel to each other. Looking from bottom to top, the circumferential surface of the columnar part 21 is a square structure, and two adjacent corners of the square are cut off. Thus, the square columnar part matches the terminal cavity 12 of the insulating body, avoiding the possible rotation risk of the cylindrical columnar part 21. The opening of the terminal cavity 12 is circular for inserting the circular columnar terminal 60. The edge of the flat plate part 22 protrudes from the columnar part 21. Thus, it can be pressed downward against the insulating body to achieve the limiting function in the up-down direction. The wire-end connector 100 further includes an upper cover 40. The upper cover covers the upper end face of the insulating body, and the two are fixed to each other by hot pressing. From Figure 9 It can be seen from the cross-sectional view that the side edge 41 of the upper cover is stepped. It can be pressed downward against the upper surface of the flat plate part 22 and at the same time pressed downward against the corresponding stepped edge of the insulating body to achieve the limiting function.

[0040] The above is only the preferred embodiment of the present invention and should not be used to limit the scope of the present invention. That is, all simple equivalent changes and modifications made according to the claims of the present invention and the content of the specification of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A wire-end connector, comprising: An insulating body having a lower end face and at least one terminal cavity penetrating the lower end face; and At least one terminal assembly, each terminal assembly including a conductive element, a conductive crown spring, and a cable, the conductive element including a columnar portion and a flat portion, the columnar portion having opposing upper and lower end faces and a mating cavity extending downward through the lower end face, the conductive crown spring being received in the mating cavity, the columnar portion being received and fixed in the terminal cavity of the insulating body, and one end of the cable having an exposed stripped core wire, the stripped core wire being soldered to the flat portion; The feature is that: the flat plate portion is integrally extended rearward from the upper end face or near the upper end face of the columnar portion, and the flat plate portion is perpendicular to the columnar portion; the stripped core wire is welded to the lower surface of the flat plate portion, so that the stripped core wire and the columnar portion are located on the lower side of the flat plate portion.

2. The wire connector as described in claim 1, characterized in that: The columnar portion has a peripheral surface located between its upper and lower end faces. The peripheral surface of the columnar portion has two fastening grooves near its lower end face. The insulating body has corresponding fastening ribs at its terminal cavity, and the fastening ribs fasten to the fastening grooves.

3. The wire connector as described in claim 2, characterized in that: Viewed from below, the peripheral surface of the columnar part has a square structure, and the two adjacent corners of the square are cut off.

4. The wire connector as described in claim 1, characterized in that: The stripped core wire is fixed to the flat plate portion by ultrasonic welding.

5. The wire connector as described in claim 1, characterized in that: The wire connector includes a top cover that covers the upper surface of the insulating body, and the two are fixed together by heat pressing.

6. The wire connector as described in claim 4, characterized in that: The wire connector includes a locking arm, which is integrally formed on the insulating body.

7. The wire connector as described in claim 1, characterized in that: The wire connector includes two terminal assemblies arranged in a left-right direction. Each terminal assembly has four cables connected to its rear end. The four stripped core wires are fused together and soldered to the lower surface of the corresponding flat plate.

8. The wire connector as described in claim 7, characterized in that: The four core wires are arranged in a pairwise matrix.

9. The wire connector as described in claim 8, characterized in that: Each terminal assembly has a metal sleeve covering the flat portion and the outer side of the stripped core wire.

10. The wire connector as described in claim 2, characterized in that: The retaining groove is parallel to the flat plate portion.

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